Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 3215-2007 Centrifugal pumps for petroleum petrochemical and natural gas industries. The following technical changes have been made with respect to GB/T 3215-2007:
—The standard title has been revised from "Centrifugal pumps for petroleum petrochemical and natural gas industries" to "Centrifugal pumps for petroleum, petrochemical and natural gas industries" (see the cover and front page; the cover and front page of the 2007 edition);
—The scope has been revised (see Clause 1; Clause 1 of the 2007 edition);
—The normative references have been revised (see Clause 2; Clause 2 of the 2007 edition);
—The terms and definitions have been revised (see Clause 3; Clause 3 of the 2007 edition);
—The classification and type identification, units and specific requirements have been revised (see Clauses 4 and 5; Clause 4 of the 2007 edition);
—That the vendor shall specify on the data sheets the NPSH3 based on water [at a temperature of less than 65 °C] at the rated flow and rated speed has been revised to "the vendor shall specify...[at a temperature of less than 55 °C]..." (see 6.1.8; 5.1.10 of the 2007 edition);
—In 6.1.12, a note has been introduced to give a description of the best efficiency point flowrate for the pump as furnished (see 6.1.12);
—The conditions for which water-cooling systems shall be designed have been expressed in a modified way (see 6.1.20; 5.1.22 of the 2007 edition);
—The requirements for bolting and threads have been revised (see 6.1.29; 5.1.31 of the 2007 edition);
—The requirements for the tensile stress used in the design of the pressure casing for any material have been revised (see 6.3.4; 5.3.4 of the 2007 edition);
—The requirement that the pump-seal chamber and seal gland shall have a pressure-temperature rating at least equal to the maximum allowable working pressure and temperature of the pump casing to which it is attached, in accordance with GB/T 34875-2017 has been introduced (see 6.3.5);
—Recommendations on spiral-wound gaskets and gaskets have been introduced to the requirements of radially split casings for metal-to-metal fits, with confined controlled-compression gaskets (see 6.3.10);
—Requirements for openings for core support, core removal or waterway inspection and cleaning have been introduced (see 6.3.16);
—A parallelism range between the machined faces of pump flanges and the plane as shown on the general arrangement drawing has been introduced (see 6.4.2.6);
—The requirements for piping and auxiliary connections to the pressure casing have been revised (see 6.4.3; 5.4.3 of the 2007 edition);
—Requirements for piping gussets have been introduced (see 6.4.3.10);
—The figure illustrating the measurement of "Seal chamber face runout" has be relocated to the standard body (see 6.8.4 and 6.8.5; Annex K of the 2007 edition);
—The requirements for dynamics have been revised (see 6.9; 5.9 of the 2007 edition);
—A torsional analysis flow chart has been introduced (see Figure 29);
—The items under the type of motor, its characteristics and the accessories that the purchaser shall specify have been revised (see 7.1.5; 6.1.4 of the 2007 edition);
—The requirements for couplings have been revised (see 7.2.2; 6.2.2 of the 2007 edition);
—A working requirement for coupling guards with potentially explosive atmospheres has been introduced (see 7.2.15);
—A requirement of the rim or pan type specified by the purchaser has been introduced (see 7.3.1);
—Casing material inspection requirements have been introduced (see Table 14);
—A temperature of water used in performance tests has been introduced (see 8.3.3.2 i);
—The performance tolerances have been revised (see Table 16; Table 14 of the 2007 edition);
—A test method of net positive suction head required has been introduced (see 8.3.4.3.3);
—Shaft stiffness and bearing system life have been introduced (see Annex I).
This standard has been redrafted and modified in relation to International Standard ISO 13709:2009 Centrifugal pumps for petroleum, petrochemical and natural gas industries.
This standard has made a few structural changes with regard to ISO 13709:2009. Corresponding numbering of equivalent clauses between this standard and the International Standard ISO 13709: 2009 is given in Annex A.
There are technical deviations between this standard and the International Standard ISO 13709: 2009. The clauses/subclauses related to these deviations have been identified by vertical single line (|) marked in the blank position of the outer page margin. The technical deviations, together with their justifications, are given in Annex B.
This standard was proposed by the China Machinery Industry Federation.
This standard is under the jurisdiction of the National Technical Committee on Pumps of Standardization Administration of China (SAC/TC 211).
The previous editions of this standard are as follows:
—GB/T 3215-1982 and GB/T 3215-2007.
Introduction
It is necessary that users of this standard be aware that further or differing requirements can be needed for individual applications. This standard is not intended to inhibit a vendor from offering, or the purchaser from accepting, alternative equipment or engineering solutions for the individual application. This can be particularly appropriate where there is innovative or developing technology. Where an alternative is offered, it is necessary that the vendor identify any variations from this standard and provide details.
A bullet (●) at the beginning of a clause or subclause indicates that either a decision is required or the purchaser is required to provide further information. It is necessary that this information should be indicated on data sheets or stated in the enquiry or purchase order (see Figure C.1, Figure C.2 and Figure C.3).
In this standard, where practical, US Customary, or other, units are included in parentheses for information.
Centrifugal pumps for petroleum, petrochemical and natural gas industries
1 Scope
This standard specifies requirements for centrifugal pumps, including pumps running in reverse as hydraulic power recovery turbines, for use in petroleum, petrochemical and gas industry process services.
This standard is applicable to overhung pumps, between-bearings pumps and vertically suspended pumps (see Table 1). Clause 9 provides requirements applicable to specific types of pump. All other clauses of this standard are applicable to all pump types. Illustrations are provided of the various specific pump types and the designations assigned to each specific type.
Relevant industry operating experience suggests pumps produced to this standard are cost effective when pumping liquids at conditions exceeding any one of the following:
—discharge pressure (gauge): 1,900 kPa (275 psi; 19.0 bar);
—suction pressure (gauge): 500 kPa (75 psi; 5.0 bar);
—pumping temperature: 150 °C (300 °F);
—rotative speed: 3,600 r/min;
—rated total head: 120 m (400 ft);
—impeller diameter, overhung pumps: 330 mm (13 in).
Note: For sealless pumps, reference can be made to API Std 685. For heavy duty pump applications in industries other than petroleum, petrochemical and gas processing, reference can be made to ISO 9905.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 193 General purpose metric screw threads—General plan
(GB/T 193-2003, ISO 261:1998, MOD)
GB/T 196 General purpose metric screw threads—Basic dimensions
(GB/T 196-2003, ISO 724:1993, MOD)
GB/T 755 Rotating electrical machines—Rating and performance (GB/T 755-2008, IEC 60034-1:2004, IDT)
GB/T 3216 Rotodynamic pumps—Hydraulic performance acceptance tests—Grades 1,2 and 3 (GB/T 3216-2016, ISO 9906:2012, IDT)
GB/T 3768 Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Survey method using an enveloping measurement surface over a reflecting plane (GB/T 3768-2017, ISO 3746:2010, IDT)
GB/T 6391-2010 Rolling bearings—Dynamic load ratings and rating life (ISO 281: 2007, IDT)
GB/T 6557 Mechanical vibration—Methods and criteria for the mechanical balancing of flexible rotors (GB/T 6557-2009, ISO 11342:1998, IDT)
GB/T 7307 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads (GB/T 7307-2001, ISO 228-1:1994, MOD)
GB/T 8196 Safety of machinery—Guards—General requirements for the design and construction of fixed and movable guards (GB/T 8196-2003, ISO 14120:2002, MOD)
GB/T 8923
(all parts) Preparation of steel substrates before application of paints and related products—Visual assessment of surface cleanliness [ISO 8501 (all parts)]
GB/T 9144 General purpose metric screw threads—Preferable plan (GB/T 9144-2003, ISO 262:1998, MOD)
GB/T 9239.1 Mechanical vibration—Balance quality requirements for rotors in a constant (rigid) state—Part 1: Specification and verification of balance tolerances (GB/T 9239.1-2006, ISO 1940-1:2003, IDT)
GB/T 19867
(all parts) Specification and qualification of welding procedures for metallic materials—Welding procedure specification [ISO 15609 (all parts)]
GB/T 20972.1 Petroleum and natural gas industries—Material for use in H2S-containing environments in oil and gas production—Part 1: General principles for selection of cracking resistant materials (GB/T 20972.1-2007, ISO 15156-1:2001, IDT)
GB/Z 32458 Centrifugal pumps handling viscous liquids—Performance corrections (GB/Z 32458-2015, ISO/TR 17766:2005, IDT)
GB/T 34875-2017 Pumps—Shaft sealing systems for centrifugal and rotary pumps (ISO 21049: 2004, IDT)
GB/T 35147 Petroleum and natural gas industries—Flexible couplings for mechanical power transmission—General purpose applications (GB/T 35147-2017, ISO 14691:2008, MOD)
ISO 7-1 Pipe threads where pressure-tight joints are made on the threads—Part 1: Dimensions, tolerances and designation
ISO 286 (all parts) ISO system of limits and fits
ISO 965 (all parts) ISO general-purpose metric screw threads—Tolerances
ISO 3117 Tangential keys and keyways
ISO 4200 Plain end steel tubes, welded and seamless—General tables of dimensions and masses per unit length
ISO 5753 Rolling bearing—Radial internal clearance
ISO 7005-1 Metallic flanges—Part 1: Steel flanges for industrial and general service piping systems
ISO 7005-2 Metallic flanges—Part2: Cast iron flanges
ISO 9606
(all parts) Approval testing of welders—Fusion welding1)
ISO 10438: 2007
(all parts) Petroleum, petrochemical and natural gas industries—Lubrication, shaft-sealing and control-oil systems and auxiliaries
ISO 10441 Petroleum, petrochemical and natural gas industries—Flexible couplings for mechanical power transmission—Special-purpose applications
ISO 10721-2 Steel structures—Part2: Fabrication and erection
ISO 15649 Petroleum and natural gas industries—Piping
IEC 60034-2-1 Rotating electrical machines—Part2-1: Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles)
IEC 60079
(all parts) Electrical apparatus for explosive gas atmospheres2)
EN 953 Safety of machinery—Guards—General requirements for the design and construction of fixed and movable guards
EN 13445
(all parts) Unfired pressure vessels
EN 13463-1 Non-electrical equipment for use in potentially explosive atmospheres—Part1: Basic method and requirements
ANSI/ABMA 7 Shaft and housing fits for metric radial ball and roller bearings (except tapered roller bearings) conforming to basic boundary plan 3)
ANSI/AGMA 9000 Flexible couplings—potential unbalance classification4)
ANSI/AGMA 9002 Bores and keyways for flexible couplings (inch series)
ANSI/AMT B15.1 Safety standard for mechanical power transmission apparatus5)
ANSI/API Std 541 Form-wound squirrel-cage induction motors—500 horsepower and larger
ANSI/API Std 611 General-purpose steam turbines for petroleum, chemical and gas industry services
ANSI/API Std 670 Machinery protection systems
ANSI/API Std 671/ISO 10441 Special purpose couplings for petroleum, chemical and gas industry services
ANSI/ASME B1.1 Unified inch screw threads, UN and UNR thread form6)
ANSI/ASME B16.1 Gray iron pipe flanges and flanged fittings: Classes 25, 125 and 250
ANSI/ASME B16.5 Pipe flanges and flanged fittings: NPS1/2 through NPS 24 metric/inch standard
ANSI/ASME B16.11 Forged steel fittings, socket-welding and threaded
ANSI/ASME B16.42 Ductile iron pipe flanges and flanged fittings, Classes 150 and 300
ANSI/ASME B16.47 Larger diameter steel flanges: NPS 26 through NPS 60
ANSI/ASME B18.18.2M Inspection and quality assurance for high-volume machine assembly fasteners
ANSI/ASME B31.3 Process piping
ANSI/HI 1.6 Centrifugal tests 7)
ANSI/HI 2.6 American national standard for vertical pump tests
API Std 547 General-purpose form-wound squirrel cage induction motors—250 horsepower and larger
API Std 677 General-purpose gear units for petroleum, chemical and gas industry services
ASME Boiler and pressure vessel code BPVC, Section V, Nondestructive examination
ASME Boiler and pressure vessel code BPVC, Section VIII, Rules for construction of pressure vessels
ASME Boiler and pressure vessel code BPVC, Section IX, Welding and brazing qualifications
DIN 910 Heavy-duty hexagon head screw plugs8)
IEE 841 IEEE standard for petroleum and chemical industry—Severe Duty Totally Enclosed Fan-Cooled (TEFC) squirrel cage induction motors—Up to and including 370 kW (500 hp)9)
MSS SP-55 Quality standard for steel castings for valves, flanges and fittings and other piping components—Visual method for evaluation of surface irregularities 10)
NACE MR0103 Materials resistant to sulfide stress cracking in corrosive petroleum refining environments11)
NFPA 70:2008 National electrical code12)
SSPC SP 6 Commercial blast cleaning13)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
axially split
principal mating face of pump casing parallel to the axis
3.2
allowable operating region
portion of a pump's hydraulic coverage over which the pump is allowed to operate, based on vibration within the upper limit of this standard or temperature rise or other limitation, specified by the manufacturer
3.3
barrel pump
horizontal pump of the double-casing type
3.4
barrier fluid
externally supplied fluid, at a pressure above the pump seal chamber pressure, introduced into an Arrangement 3 seal (pressurized dual mechanical seal) to completely isolate the pump process liquid from the environment
3.5
best efficiency point; BEP
flowrate at which a pump achieves its highest efficiency at rated impeller diameter
Note: The best efficiency point flowrate at maximum impeller diameter is used to determine pump specific speed and suction-specific speed. The best efficiency point flowrate is reduced with reduced impeller diameters.
3.6
buffer fluid
externally supplied fluid, at a pressure lower than the pump seal chamber pressure, used as a lubricant and/or to provide a diluent in an Arrangement 2 seal (unpressurized dual mechanical seal)
3.7
cartridge-type element
assembly of all the parts of the pump except for the casing
3.8
classically stiff
characterized by the first dry critical speed being above the pump's maximum continuous speed by the following:
20 % for rotors designed for wet running only;
30 % for rotors designed to be able to run dry.
3.9
critical speed
shaft rotational speed at which the rotor-bearing-support system is in a state of resonance
3.10
datum elevation
elevation to which values of NPSH are referred (see 6.1.8)
See net positive suction head (3.33).
3.11
design
manufacturer's calculated parameter
Note: “Design” is a term that may be used by the equipment manufacturer to describe various parameters, such as design power, design pressure, design temperature, or design speed. This term should be used only by the equipment manufacturer and not in the purchaser's specifications.
3.12
double casing
type of pump construction in which the pressure casing is separate from the pumping elements contained in the casing
Note: Pumping elements include diffuser, diaphragms, bowls and volute inner casings.
3.13
drive-train component
item of the equipment used in series to drive the pump
Examples: Motor, gear, turbine, engine, fluid drive, clutch.
3.14
dry critical speed
rotor critical speed calculated assuming that there are no liquid effects, that the rotor is supported only at its bearings and that the bearings are of infinite stiffness
3.15
element
bundle
assembly of the rotor plus the internal stationary parts of a centrifugal pump
3.16
hydraulic power recovery turbine; HPRT
turbomachine designed to recover power from a fluid stream
3.17
hydrodynamic bearing
bearing that uses the principles of hydrodynamic lubrication
3.18
identical pump
pump of the same size, hydraulic design, number of stages, rotational speed, clearances, type of shaft seal (axial face or breakdown bushing), type of bearings, coupling mass, coupling overhang, and pumping the same liquid
3.19
maximum allowable speed
highest speed at which the manufacturer's design permits continuous operation
3.20
maximum allowable temperature
maximum continuous temperature for which the manufacturer has designed the pump (or any part to which the term is referred) when pumping the specified liquid at the specified maximum operating pressure (does not include mechanical seal)
See pressure casing (3.43).
3.21
maximum allowable working pressure; MAWP
maximum continuous pressure for which the manufacturer has designed the pump (or any part to which the term is referred) when pumping the specified liquid at the specified maximum operating temperature (does not include mechanical seal)
3.22
maximum discharge pressure
maximum suction pressure plus the maximum differential pressure of the pump when operating at rated speed and the specified normal relative density (specific gravity)
3.23
maximum dynamic sealing pressure
highest pressure expected at the seals during any specified operating condition and during start-up and shut-down
Note: Both dynamic and static sealing pressures are important to selection of the mechanical seal. They are dependent on the pump suction pressure, operating point and pump clearances. They are also affected by the pressure of the seal flush. This pressure is specified by the seal vendor. See GB/T 34875-2017 or ANSI/API Std 682/ISO 21049.
3.24
maximum operating temperature
highest temperature of the pumped liquid, including upset conditions, to which the pump is exposed
Note: This temperature is specified by the seal vendor. See GB/T 34875-2017 or ANSI/API Std 682/ISO 21049.
3.25
maximum static sealing pressure
highest pressure, excluding pressures encountered during hydrostatic testing, to which the seals can be subjected while the pump is shut down
3.26
maximum suction pressure
highest suction pressure to which the pump is subjected during operation (non-transient; does not include waterhammer)
3.27
minimum allowable speed
lowest speed at which the manufacturer's design permits continuous operation
Note: The speed is expressed in units of revolutions per minute (r/min).
3.28
minimum continuous stable flow
lowest flow at which the pump can operate without exceeding the vibration limits imposed by this standard
3.29
minimum continuous thermal flow
lowest flow at which the pump can operate without its operation being impaired by the temperature rise of the pumped liquid
3.30
minimum design metal temperature
lowest mean metal temperature (through the thickness) expected in service, including operation upsets, auto-refrigeration and temperature of the surrounding environment, for which the equipment is designed
3.31
multistage pump
pump with three or more stages
See also 4.2.
3.32
nominal pipe size; NPS
designation, usually followed by a size designation number, corresponding approximately to the outside diameter of the pipe
Note: The NPS is expressed in inches (in).
3.33
net positive suction head; NPSH
absolute inlet total head above the head equivalent to the vapour pressure referred to the NPSH datum plane
Note: NPSH is expressed in metres (m) or feet (ft).
3.34
net positive suction head available; NPSHA
NPSH determined by the purchaser according to the pump conditions (the liquid at the rated flow and normal pumping temperature)
3.35
net positive suction head required; NPSH3
NPSH that results in a 3 % loss of head (first-stage head in a multistage pump) determined by the vendor by testing with water
3.36
normal operating point
point at which the pump is expected to operate under normal process conditions
3.37
normal-wear part
part normally restored or replaced at each pump overhaul
Examples: Wear rings, inter-stage bushings, balancing device, throat bushing, seal faces, bearings and gaskets.
3.38
observed inspection
observed test
inspection or test where the purchaser is notified of the timing of the inspection or test and the inspection or test is performed as scheduled, regardless of whether the purchaser or his representative is present
3.39
oil-mist lubrication
lubrication provided by oil mist produced by atomization and transported to the bearing housing by compressed air
3.40
operating region
portion of a pump's hydraulic coverage over which the pump operates
3.41
overhung pump
pump whose impeller is supported by a cantilever shaft from its bearing assembly
3.42
preferred operating region
portion of a pump's hydraulic coverage over which the pump's vibration is within the base limit of this standard
3.43
pressure casing
composite of all stationary pressure-containing parts of the pump, including all nozzles, seal glands, seal chambers and auxiliary connections but excluding the stationary and rotating members of mechanical seals
Note: The seal flush piping, auxiliary piping and valves on the atmospheric side of the seal gland are not part of the pressure casing.
3.44
purchaser
owner, or owner's agent, who issues the order and specification to the vendor
3.45
pure oil-mist lubrication
(dry sump) system in which the mist both lubricates the bearing(s) and purges the housing and there is no oil level in the sump
3.46
purge oil-mist lubrication
(wet sump) systems in which the mist only purges the bearing housing
3.47
radially split
split with the principal joint of pump casing perpendicular to the pump axis
3.48
rated operating point
point at which the vendor certifies that pump performance is within the tolerances stated in this standard
Note: Normally, the rated operating point is the specified operating point with the highest flow.
3.49
relative density
specific gravity
property of a liquid expressed as the ratio of the liquid's density to that of water at standard temperature
Note: Standard temperature is 4 °C (39.2 °F).
3.50
rotor
assembly of all the rotating parts of a centrifugal pump
3.51
similar pump
pump that is accepted, by agreement between purchaser and manufacturer as sufficiently similar to not require a lateral analysis, taking into account the factors listed for an identical pump (3.18)
3.52
specific speed
index relating flow, total head and rotational speed for pumps of similar geometry
3.53
stage
one impeller and associated diffuser or volute and return channel, if required
3.54
suction-specific speed
index relating flow, NPSH3 and rotative speed for pumps of similar geometry
3.55
throat bushing
device that forms a restrictive close clearance around the sleeve (or shaft) between the seal or inner seal of a dual seal cartridge and the impeller
3.56
total indicator reading
total indicated runout; TIR
difference between the maximum and minimum readings of a dial indicator or similar device, monitoring a face or cylindrical surface, during one complete revolution of the monitored surface
Note: For a perfectly cylindrical surface, the indicator reading implies an eccentricity equal to half the reading. For a perfectly flat face, the indicator reading gives an squareness equal to the reading. If the diameter in question is not perfectly cylindrical or flat, interpretation of the meaning of TIR is more complex and can represent ovality or lobing.
3.57
trip speed
(electric motor driver) electric motor driver-synchronous speed at maximum supply frequency
3.58
trip speed
(variable-speed driver) variable-speed driver-speed at which the independent emergency over-speed device operates to shut down the driver
3.59
unit responsibility
responsibility for coordinating the documentation, delivery and technical aspects of the equipment and all auxiliary systems included in the scope of the order
Note: The technical aspects for consideration include, but are not limited to, such factors as the power requirements, speed, rotation, general arrangement, couplings, dynamics, lubrication, sealing system, material test reports, instrumentation, piping, conformance to specifications and testing of components.
3.60
vendor
supplier
manufacturer or manufacturer's agent that supplies the equipment and is normally responsible for service support
3.61
vertical in-line pump
vertical-axis, single-stage, overhung pump whose suction and discharge connections have a common centreline that is perpendicular to the pump axis
Note: Types VS6 and VS7 are not considered in-line pumps.
3.62
vertically suspended pump
vertical-axis pump whose liquid end is suspended from a column and mounting plate
Note: The pump's liquid end is usually submerged in the pumped liquid.
3.63
wet critical speed
rotor critical speed calculated considering the additional support and damping produced by the action of the pumped liquid within internal running clearances at the operating conditions and allowing for stiffness and damping within the bearings
3.64
witnessed test
witnessed inspection
inspection or test for which the purchaser is notified of the timing of the inspection or test and a hold is placed on the inspection or test until the purchaser or his agent is in attendance
4 General
4.1 Unit responsibility
Unless otherwise specified, the pump vendor shall have unit responsibility. The pump vendor shall ensure that all sub-vendors comply with the requirements of this standard and all reference documents.
4.2 Classification and designation
4.2.1 Description of codes
The pumps described in this standard are classified and designated by type codes, as shown in Table 1.
Table 1 Pump classification type identification
Pump type a Orientation Type code
Centrifugal pumps Overhung Flexibly coupled Horizontal Foot-mounted OH1
Centreline-supported OH2
Vertical in-line with bearing bracket — OH3
Rigidly coupled Vertical in-line — OH4
Close-coupled Vertical in-line — OH5
High-speed integrally geared — OH6
Between-bearings 1- and 2-stage Axially split — BB1
Radially split — BB2
Multistage Axially split — BB3
Radially split Single casing BB4
Double casing BB5
Vertically suspended Single casing Discharge through column Diffuser VS1
Volute VS2
Axial flow VS3
Separate discharge Line shaft VS4
Cantilever VS5
Double casing Diffuser — VS6
Volute — VS7
a Illustrations of the various types of pump are provided in 4.2.2.
4.2.2 Pump designations and descriptions
4.2.2.1 Pump type OH1
Foot-mounted, single-stage overhung pumps shall be designated pump type OH1, see Figure 1. (This type does not meet all the requirements of this standard; see Table 3.)
Figure 1 Pump type OH1
4.2.2.2 Pump type OH2
Centreline-mounted, single-stage overhung pumps shall be designated pump type OH2, see Figure 2. They have a single bearing housing to absorb all forces imposed upon the pump shaft and maintain rotor position during operation. The pumps are mounted on a baseplate and are flexibly coupled to their drivers.
Foreword i
Introduction iv
1 Scope
2 Normative references
3 Terms and definitions
4 General
4.1 Unit responsibility
4.2 Classification and designation
5 Technical requirements
5.1 Units
5.2 Statutory requirements
5.3 Requirements
6 Basic design
6.1 General
6.2 Pump types
6.3 Pressure casings
6.4 Nozzles and pressure casing connections
6.5 External nozzle forces and moments
6.6 Rotors
6.7 Wear rings and running clearances
6.8 Mechanical shaft seals
6.9 Dynamics
6.10 Bearings and bearing housings
6.11 Lubrication
6.12 Materials
6.13 Nameplates and rotation arrows
7 Accessories
7.1 Drivers
7.2 Couplings and guards
7.3 Baseplates
7.4 Instrumentation
7.5 Piping and appurtenances
7.6 Special tools
8 Inspection, testing, and preparation for shipment
8.1 General
8.2 Inspection
8.3 Testing
8.4 Preparation for shipment
9 Specific pump types
9.1 Single-stage overhung pumps
9.2 Between-bearings pumps (types BB1, BB2, BB3 and BB5)
9.3 Vertically suspended pumps (types VS1 through VS7)
10 Vendor's data
10.1 General
10.2 Proposals
10.3 Contract data
Annex A (Informative) Corresponding numbering of equivalent clauses between this standard and ISO 13709: 2009
Annex B (Informative) Technical deviations of this standard from ISO 13709: 2009 and their justifications
Annex C (Informative) Pump datasheets and electronic data exchange
Annex D (Normative) Hydraulic power recovery turbines
Annex E (Informative) Specific speed and suction-specific speed
Annex F (Normative) Cooling water and lubrication system schematics
Annex G (Normative) Materials and material specification for pump parts
Annex H (Normative) Criteria for piping design
Annex I (Informative) Shaft stiffness and bearing system life
Annex J (Informative) Materials class selection guidance
Annex K (Normative) Standard baseplates
Annex L (Informative) Inspector's checklist
Annex M (Informative) Test data summary
Annex N (Informative) Vendor drawing and data requirements
Annex O (Normative) Lateral analysis
Annex P (Normative) Determination of residual unbalance
Bibliography
石油、石化和天然气工业用离心泵
1 范围
本标准规定了石油、石化和天然气工业用离心泵的要求，包括泵反转用于能量回收的液力回收透平。
本标准适用于悬臂式泵，两端支承式泵和立式悬吊式泵(见表1)。第9章规定的要求适用于特定泵型。本标准的所有其他条款适用于所有泵型。本标准给出了各种规定泵型的示意图，以及每种规定泵型的型式代号。
依据相关的行业运行经验，当泵输送液体超过下列任一条件时，依据本标准生产的泵对控制成本是有益的：
——排出压力(表压) 1 900 kPa(275 psi；19.0 bar)
——吸入压力(表压) 500 kPa(75 psi；5.0 bar)
——输送温度 150 ℃(300 ℉)
——运行转速 3 600r／min
——额定总扬程 120 m(400 ft)
——叶轮直径，悬臂式泵 330 mm(13 in)
注：对于无轴封泵，可参照API Std 685的规定。石油、石化和天然气工业以外工业应用的重载荷泵，参照ISO 9905的规定。
2 规范性引用文件
下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件，仅注日期的版本适用于本文件。凡是不注日期的引用文件，其最新版本(包括所有的修改单)适用于本文件。
GB／T 193 普通螺纹 直径与螺距系列(GB／T 193-2003，ISO 261：1998，MOD)
GB／T 196 普通螺纹 基本尺寸(GB／T 196-2003，ISO 724：1993，MOD)
GB／T 755 旋转电机 定额和性能(GB／T 755-2008，IEC 60034-1：2004，IDT)
GB／T 3216 回转动力泵 水力性能验收试验 1级、2级和3级(GB／T 3216-2016，ISO 9906：2012，IDT)
GB／T 3768 声学 声压法测定噪声源声功率级和声能量级 采用反射面上方包络测量面的简易法(GB／T 3768-2017，ISO 3746：2010，IDT)
GB／T 6391-2010 滚动轴承 额定动载荷和额定寿命(ISO 281：2007，IDT)
GB／T 6557 挠性转子机械平衡的方法和准则(GB／T 6557-2009，ISO 11342：1998，IDT)
GB／T 7307 55°非密封管螺纹(GB／T 7307-2001，ISO 228-1：1994，MOD)
GB／T 8196 机械安全 防护装置 固定式和活动式防护装置设计与制造一般要求(GB／T 8196-2003，ISO 14120：2002，MOD)
GB／T 8923(所有部分) 涂覆涂料前钢材表面处理 表面清洁度的目视评定[ISO8501(所有部分)]
GB／T 9144 普通螺纹 优选系列(GB／T 9144-2003，ISO 262：1998，MOD)
GB／T 9239.1 机械振动 恒态(刚性)转子平衡品质要求 第1部分：规范与平衡允差的检验(GB／T 9239.1-2006，ISO 1940-1：2003，IDT)
GB／T 19867(所有部分) 金属材料焊接工艺规程及评定 焊接工艺规程[ISO 15609(所有部分)]
GB／T 20972.1 石油天然气工业 油气开采中用于含硫化氢环境的材料 第1部分：选择抗裂纹材料的一般原则(GB／T 20972.1-2007，ISO 15156-1：2001，IDT)
GB／Z 32458 输送黏性液体的离心泵 性能修正(GB／Z 32458-2015，ISO／TR 17766：2005，IDT)
GB／T 34875-2017 离心泵和转子泵用轴封系统(ISO 21049：2004，IDT)
GB／T 35147 石油天然气工业 机械动力传输挠性联轴器 一般用途(GB／T 35147-2017，ISO 14691：2008，MOD)
ISO 7-1 螺纹上有压力密封接头的管螺纹 第1部分：标记、尺寸和公差(Pipe threads where pressure-tight joints are made on the threads-Part 1：Demensions，tolerances and designation)
ISO 286(所有部分) ISO极限和配合体系(ISO system of limits and fits)
ISO 965(所有部分) 一般用途米制螺纹 公差(ISO geneal-purpose metric screw threads-Tol-erances)
ISO 3117 切向键和键槽(Tangential keys and keyways)
ISO 4200 焊缝及无缝(无螺纹)平端钢管 尺寸和单位长度质量(Plain end steel tubes，welded and seamless—General tables of dimensions and masses per unit length)
ISO 5753 滚动轴承 游隙(Rolling bearing—Radial internal clearance)
ISO 7005-1 金属法兰 第1部分：工业管道系统和通用管道系统用钢法兰(Metallic flanges—Part 1：Steel flanges for industrial and general service piping systems)
ISO 7005-2 金属法兰 第2部分：铸铁法兰(Metallic flanges—Part2：Cast iron flanges)
ISO 9606(所有部分) 焊工的认可考试 熔焊1)(Approval testing of welders—Fusion welding)
ISO 10438：2007(所有部分) 石油、石化和天然气工业 润滑、轴封和控油系统及辅助设备(Pe-troleum，petrochemical and natural gas industries—Lubrication，shaft-sealing and control-oil systems and auxiliaries)
ISO 10441 石油、石化和天然气工业 机械动力传输用弹性联轴器 特殊应用(Petroleum，pet-rochemical and natural gas industries-Flexible couplings for mechanical power transmission—Special-purpose applications)
ISO 10721-2 钢结构 第2部分：制造和安装(Steel structures—Part2：Fabrication and erection)
ISO 15649 石油和天然气 工业管道(Petroleum and natural gas industries—Piping)
IEC 60034-2-1 旋转电机 第2-1部分：通过试验测定损耗和效率的标准方法(不包括牵引车辆用电机)[Rotating electrical machines—Part2-1：Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles)]
__________________
1) ISO 9606的一些部分正在修订中，一些修改内容是焊工资格考试部分。
IEC 60079(所有部分) 爆炸性气体环境电气设备2)(Electrical apparatus for explosive gas atmos-pheres)
EN 953 机械安全 防护装置 固定和移动防护装置构造和设计的一般要求(Safety of machin-ery—Guards—General requirements for the design and construction of fixed and movable guards)
EN 13445(所有部分) 不用火加热的压力容器(Unfired pressure vessels)
EN 13463-1 潜在爆炸性空气中使用的非电气设备 第1部分：基本方法和要求(Non-electrical equipment for use in potentially explosive atmospheres—Part1：Basic method and requirements)
ANSI／ABMA 7 米制径向球轴承和滚子轴承(锥形滚柱轴承除外)用轴和轴承座的配合(与基本平面图相符合)3)[Shaft and Housing Fits for Metric Radial Ball and Roller Bearings (Except Tapered Roller Bearings) Conforming to Basic Boundary Plan]
ANSI／AGMA 9000 弹性联轴器 潜在不平衡的分类4)(Flexible Couplings—Potential Unbalance Classification)
ANSI／AGMA 9002 弹性联轴器的镗孔和键槽(英制系列)[Boresand Keyways for Flexible Cou-plings(Inch Series)]
ANSI／AMT B15.1 机械动力传动装置用安全标准5)(Safety Standard for Mechanical Power Transmission Apparatus)
ANSI／API Std 541 鼠笼式模绕感应电动机 500马力及更大(Form-Wound Squirrel-Cage In-duction Motors-500 Horsepower and Larger)
ANSI／API Std 611 石油、石化和天然气工业用汽轮机(Generl-Purpose Steam Turbines for Pe-troleum，Chemical and Gas Industry Services)
ANSI／API Std 670 机械保护系统(Machinery Protection Systems)
ANSI／API Std 671／ISO 10441 石油、化工和天然气工业特殊用途联轴器(Special Purpose Cou-plings for Petroleum，Chemical and Gas Industry Services)
ANSI／ASME B1.1 统一英制螺纹，UN和UNR螺纹形式6)(Unified Inch Screw Threads，
UN and UNR Thread Form)
ANSI／ASME B16.1 灰口铸铁管法兰及法兰配件：25、125和250级(Gray Iron Pipe Flanges and Flanged Fittings：Classes 25，125 and 250)
ANSI／ASME B16.5 管法兰及法兰配件：NPS1／2至NPS24米制／英制标准(Pipe Flanges and Flanged Fittings：NPS1／2through NPS 24 Metric／Inch Standard)
ANSI／ASME B16.11 锻造钢配件，承插焊和螺纹连接(Forged Steel Fittings，Socket-Welding and Threaded)
ANSI／ASME B16.42 球墨铸铁管法兰和法兰配件，150和300级(Ductile Iron Pipe Flanges and Flanged Fittings，Classes 150 and 300)
ANSI／ASME B16.47 大直径钢法兰：NPS26-NPS 60(Larger Diameter Steel Flanges：NPS 26 Through NPS 60)
______________________
2) 本标准的许多部分是爆炸气体的内容。
3) 美国轴承制造商协会，2025 M Street，NW，Suite 800，Washington，DC 20036，USA。
4) 美国设备制造商协会，1500 King Street，Suite 201，Alexandria，VA 22314，USA。
5) 美国国家标准协会，1819 L Street，Suite 600，Washington，D.C. 20036，USA。
6) 美国机械工程师学会，Three Park Avenue，New York，NY 10016-5990，USA。
ANSI／ASME B18.18.2M 大容量机组用紧固件的检验和质量保证(Inspection and Quality As-surance for High-Volume Machine Assembly Fasteners)
ANSI／ASME B31.3 工艺管线(Process Piping)
ANSI／HI 1.6 离心泵试验7)(Centrifugal Tests)
ANSI／HI 2.6 立式泵试验用美国国家标准(American National Standard for Vertical Pump Tests)
API Std 547 通用鼠笼式缠绕感应电动机 250马力及更大(General-Purpose Form-Wound Squirrel Cage Induction Motors—250 Horsepower and Larger)
API Std 677 石油、化工和天然气工业通用齿轮箱系统(General-Purpose Gear Units for Petrole-um，Chemical and Gas Industry Services)
ASME 锅炉和压力容器规范BPVC 第Ⅴ卷，无损检测(Boiler and pressure vessel code BPVC，Section Ⅴ，Nondestructive Examination)
ASME 锅炉和压力容器规范BPVC 第Ⅷ卷，压力容器建造规则(Boiler and pressure vessel code BPVC，Section Ⅷ，Rules for Construction of Pressure Vessels)
ASME 锅炉和压力容器规范BPVC 第Ⅸ卷，焊接和钎焊评定(Boiler and pressure vessel code BPVC，Section Ⅸ，Welding and Brazing Qualifications)
DIN 910 重型六角头螺塞8)(Heavy-duty hexagon head screw plugs)
IEE 841 石油、化工工业IEEE标准 全封闭风扇冷却式(TEFC)重载鼠笼式感应电动
机 小于或等于370 kW(500 hp)9)[IEEE Standard for Petroleum and Chemical Industry—Severe Duty Totally Enclosed Fan-Cooled (TEFC) Squirrel Cage Induction Motors—Up to and Including 500 hp]
MSS SP-55 阀门、法兰、管件和其他管道部件用铸钢件质量标准 表面缺陷评定的目视检验方法10)(Quality Standard for Steel Castings for Valves，Flanges and Fittings and Other Piping Compo-nents—Visual Method for Evaluation of Surface Irregularities)
NACE MR0103 石油精炼的腐蚀环境下耐硫化物应力开裂的材料11)(Materials Resistant to Sul-fide Stress Cracking in Corrosive Petroleum Refining Environments)
NFPA 70：2008 国家电气规范12)(National Electrical Code)
SSPC SP 6 工业级喷砂清理13)(Commercial Blast Cleaning)
___________________
7) 液压研究所，9 Sylvan Way，Parsippany，NJ 07054，USA。
8) 德国工业标准，Burggrafenstrasse 6，Berlin，Germany D-10787。
9) 电气与电子工程师协会，445 Hoes Lane，Piscataway，NJ 08855-1331，USA。
10) 阀和配件工业制造商标准学会，127 Park Street N.E.，Vienna，VA 22180-4602，USA。
11) 国家耐腐蚀工程师协会，Houston，Texas，USA。
12) 国家防火协会，1 Batterymarch Park，Quincy，MA 02169-7471，USA。
13) 保护涂层学会，40 24th Street，6th Floor，Pittsburgh，PA 15222-4643，USA。
3 术语和定义
下列术语和定义适用于本文件。
3.1
轴向剖分 axially split
泵壳的主密封面平行于轴线。
3.2
允许工作范围 allowable operating region
以振动在本标准规定的上限范围内，或者制造厂规定的温升限制或其他限制为基础，制造厂规定的允许泵工作的水力性能范围。
3.3
筒型泵 barrel pump
双壳体卧式泵。
3.4
隔离流体 barrier fluid
外部提供的流体，其压力高于泵密封腔压力，引入到布置方式3密封(承压双端面机械密封)，实现泵送液体与大气的完全隔离。
3.5
最佳效率点 best efficiency point；BEP
泵在额定叶轮直径下达到其最高效率的流量点。
注：最大叶轮直径下的最佳效率点流量是用来确定泵的比转数和汽蚀比转数的。减小叶轮直径后，同样减小了最佳效率点流量。
3.6
缓冲流体 buffer fluid
外部提供的流体，其压力低于泵密封腔压力，在布置方式2密封(非承压双端面机械密封)中起润滑和／或稀释的作用。
3.7
集装组合体 cartridge-type element
除壳体以外的所有泵零件的组装体。
3.8
传统刚性 classically stiff
其特性为泵的一阶干临界转速高出泵最大连续转速以下数值：
对于设计仅作湿运转的转子为20%；
对于设计成能够干运转的转子为30%。
3.9
临界转速 critical speed
转子-轴承-支撑系统处于共振状态的轴转速。
3.10
基准标高 datum elevation
NPSH所参考的海拔高度值(见6.1.8)。
参见：汽蚀余量(3.33)。
3.11
设计 design
制造商的计算参数。
注：“设计”是设备制造商用来描述各种参数的术语，如设计功率、设计压力、设计温度或设计转速。这个术语宜仅限于设备制造商使用，不宜用于买方的技术条件中。
3.12
双壳体 double casing
压力壳体独立于壳体内的过流部件的泵结构型式。
注：过流部件包括导叶、隔板、碗形和蜗形内壳体。
3.13
驱动装置部件 drive-train component
用于驱动泵的有序使用的设备物项。
示例：电动机、齿轮箱、透平、发动机、液力驱动、离合器。
3.14
干临界转速 dry critical speed
计算的转子临界转速，假定条件为没有液体影响，转子仅由其轴承支撑，轴承为无限刚度。
3.15
组合体 element
芯包 bundle
离心泵转子部件和内部静止零件的组装体。
3.16
液力回收透平 hydraulic power recovery turbine；HPRT
用来从液流中回收能量的透平机。
3.17
流体动压轴承 hydrodynamic bearing
利用流体动压润滑原理工作的轴承。
3.18
同种泵 identical pump
具有相同的尺寸、水力设计、级数、转速、间隙、轴封型式(轴向端面或卸压衬套)、轴承类型、联轴器质量和联轴器悬臂长，且输送相同液体的泵。
3.19
最大允许转速 maximum allowable speed
制造商设计所允许的连续工作的最高转速。
3.20
最高允许温度 maximum allowable temperature
制造商为该设备(或术语所指的任何部分)按规定最大工作压力下输送某种指定液体而设计的最高连续工作温度(不包括机械密封)。
参见：压力壳体(3.43)。
3.21
最大允许工作压力 maximum allowable working pressure；MAWP
制造商为该设备(或术语所指的任何部分)按规定的最高工作温度下输送某种指定液体而设计的最大连续工作压力(不包括机械密封)。
3.22
最大排出压力 maximum discharge pressure
最大吸入压力加上在额定转速和规定的正常相对密度(比重)下泵工作时产生的最大压差。
3.23
最大动态密封压力 maximum dynamic sealing pressure
在任何规定的工作条件下，以及在启动与停机的过程中，密封处预计会受到的最高压力。
注：动态和静态密封压力对机械密封的选择都是重要的。这些压力取决于泵的吸入压力、工况点和泵间隙。这些压力也受密封冲洗压力的影响。最大动态密封压力由密封卖方规定。见GB／T 34875-2017或ANSI／API Std 682／ISO 21049。
3.24
最高工作温度 maximum operating temperature
泵所输送液体的最高温度，包括泵所能出现的失常条件。
注：最高工作温度由密封卖方规定。见GB／T 34875-2017或ANSI／API Std 682／ISO 21049。
3.25
最大静态密封压力 maximum static sealing pressure
泵在停机时密封承受到的最高压力，不包括泵在做静水压试验期间所承受的压力。
3.26
最大吸入压力 maximum suction pressure
泵在工作期间所承受的最高吸入压力(非瞬态，不包括水锤)。
3.27
最低允许转速 minimum allowable speed
制造商设计允许的连续工作的最低转速。
注：转速的单位为转每分(r／min)。
3.28
最小连续稳定流量 minimum continuous stable flow
在不超出本标准所规定的振动限值下泵能够工作的最小流量。
3.29
最小连续热限制流量 minimum continuous thermal flow
泵能够工作而其运行不致被泵所输送液体的温升所损害的最小流量。
3.30
最低设计金属温度 minimum design metal temperature
在使用中所预期的最低平均金属温度(厚度方向)，设备设计时应考虑运行失常、自制冷以及环境温度等因素。
3.31
多级泵 multistage pump
3级及3级以上的泵。
见4.2。
3.32
公称管径 nominal pipe size；NPS
通常在尺寸代号后标记，近似于管外径。
注：NPS的单位为英寸(in)。
3.33
汽蚀余量 net positive suction head；NPSH
高于汽化压力的吸入口总绝对水头，以NPSH基准面为基准。
注：NPSH的单位为米(m)或英尺(ft)。
3.34
有效汽蚀余量 net positive suction head available；NPSHA
买方根据泵装置条件(液体是在额定流量和正常输送温度下)确定的NPSH。
3.35
必需汽蚀余量 net positive suction head required；NPSH3
卖方用水进行试验来确定的在扬程(在多级泵中是第1级扬程)下降3%时的NPSH。
3.36
正常工况点 normal operating point
在正常流程条件下期望泵工作的点。
3.37
易损件 normal-wear part
在每次泵大修时正常要修复或更换的零件。
示例：耐磨环、级间衬套、平衡装置、喉部衬套、密封件、轴承和垫。
3.38
观察检查 observed inspection
观察试验 observed test
通知买方按时间到现场的检查或试验，不管买方或其代表是否到场，检查或试验都要如期进行。
3.39
油雾润滑 oil-mist lubrication
利用压缩空气将润滑油雾化并送至轴承箱进行的润滑。
3.40
工作区 operating region
泵工作的水力性能区间。
3.41
悬臂式泵 overhung pump
由轴承部件伸出的悬臂轴支撑叶轮的泵。
3.42
优先工作区 preferred operating region
泵的振动在本标准基本限值范围内的泵的水力性能区间。
3.43
压力壳体 pressure casing
泵上所有静止承压零件的组合，包括所有管口、密封压盖、密封腔和辅助接口，但不包括机械密封的静止元件和旋转元件。
注：密封压盖大气侧的密封冲洗管路、辅助管路和阀不是压力壳体零件。
3.44
买方 purchaser
向卖方发出采购订单和技术规格书的业主或业主代理商。
3.45
纯油雾润滑 pure oil-mist lubrication
油雾既润滑轴承，又吹洗轴承箱，而且油池内无存油的(干油池)系统。
3.46
吹洗油雾润滑 purge oil-mist lubrication
油雾只吹洗轴承箱的(湿油池)系统。
3.47
径向剖分 radially split
泵壳主接合面垂直于泵轴线的剖分。
3.48
额定工况点 rated operating point
卖方确认泵性能在本标准规定的允差范围内的工况点。
注：一般情况下，额定工况点为规定的最大流量工况点。
3.49
相对密度 relative density
比重 specific gravity
液体的一种性质，表示该液体的密度与标准温度下水的密度的比值。
注：标准温度是4 ℃(39.2 ℉)。
3.50
转子 rotor
一台离心泵所有旋转零件的组合。
3.51
相似泵 similar pump
当有足够的相似条件不需要做横向分析，买方和制造商双方协商同意接受的泵，考虑因素见等同泵(3.18)。
3.52
比转数 specific speed
对几何形状相似的泵而言，与流量、扬程和转速相关的特征值。
3.53
级 stage
一个叶轮和相应的导叶，如果需要，可有蜗壳和反流道。
3.54
汽蚀比转数 suction-specific speed
对几何形状相似的泵而言，与流量、NPSH3和转速相关的特征值。
3.55
喉部衬套 throat bushing
在单密封或双端面集装密封的内侧密封和叶轮之间的轴套(或轴)周围形成限定性微小间隙的一种装置。
3.56
总指示器读数 total indicator reading
总指示跳动 total indicated runout；TIR
检测一个平面或一个圆柱面，在一个完整的被检测表面周期内，千分表或类似仪表的最大和最小读数差。
注：对于一个理想的圆柱面，仪表读数表示圆柱面的偏心距为该读数的1／2。对于理想的平面，仪表读数给出了平面的垂直度等于该读数。如果直径表面不是理想的圆柱面或平面，则TIR的解释就更为复杂，可能代表椭圆度或波纹度。
3.57
跳闸转速 trip speed
〈电动机驱动〉在最大电源频率时电动机驱动的同步转速。
3.58
跳闸转速 trip speed
〈变速驱动〉独立的事故超速保险装置产生动作关闭驱动机时，变速驱动机的转速。
3.59
机组责任 unit responsibility
协调解决该设备的文件、交付和技术方面问题的责任，包括订单范围内的辅助设备系统。
注：要考虑的技术方面包括但不限于：功率要求、转速、转向、总体布置、联轴器、动力学、润滑、密封系统、材料试验报告、仪器仪表、管路、元器件的试验与技术条件的一致性。
3.60
卖方 vendor
供货方 supplier
提供设备并通常负责设备的服务支持的制造商或制造商的代理商。
3.61
立式管道式泵 vertical in-line pump
立式、单级、悬臂式泵，其吸入口和排出口在同一中心线上，并与泵轴垂直。
注：VS6型和VS7型不是立式管道式泵。
3.62
立式悬吊式泵 vertically suspended pump
立式泵，其过流部位悬吊在悬吊管和安装板上。
注：泵的过流部位通常浸没在泵所输送的液体中。
3.63
湿临界转速 wet critical speed
考虑了泵在工作条件下，内部运转间隙中由泵所输送液体产生的附加支承和阻尼作用，以及轴承内的允许刚度和阻尼计算出的转子临界转速。
3.64
见证试验 witnessed test
见证检查 witnessed inspection
把检查或试验的时间安排通知买方，只有买方或其代理人到场才能进行检查或试验。
4 总则
4.1 机组责任
除非另有规定，泵的卖方应负有机组责任。泵的卖方应确保所有分供方遵守本标准和引用文件的要求。
4.2 分类和名称
4.2.1 代号描述
本标准描述的泵按型式代号来分类和命名，见表1。
表1 泵分类型式标识
泵型式a 方向 型式代号
离心泵 悬臂式 弹性联接 卧式 底脚安装 OH1
中心线支承 OH2
带轴承架立式管道式 — OH3
刚性联接 立式管道式 — OH4
共轴联接 立式管道式 — OH5
高速一体齿轮传动式 — OH6
两端支承式 单级和两级 轴向剖分式 — BB1
径向剖分式 — BB2
多级 轴向剖分式 — BB3
径向剖分式 单壳体 BB4
双壳体 BB5
立式悬吊式 单壳体 通过悬吊管排出式 导流壳 VS1
蜗壳 VS2
轴流 VS3
单独排出式 长轴式 VS4
悬臂式 VS5
双壳体 导流壳式 — VS6
蜗壳式 — VS7
a 不同泵型式图示见4.2.2。
4.2.2 泵名称和描述
4.2.2.1 OH1型泵
OH1型泵应是底脚安装、单级悬臂式泵，见图1(此型泵不能满足本标准的所有要求，见表3)。
图1 OH1型泵
4.2.2.2 OH2型泵
OH2型泵应是中心线支承、单级悬臂式泵，见图2。该型泵有单独的轴承箱来承受所有作用在泵轴上的力，并在工作期间保持转子的位置。泵安装在底座上，并与驱动机弹性联接。
图2 OH2型泵
4.2.2.3 OH3型泵
OH3型泵应是带独立轴承架的立式、管道式、单级悬臂式泵，见图3。该型泵具有与泵成一体的轴承箱来承受所有的泵载荷。驱动机安装在与泵成一体的支架上。泵与驱动机弹性联接。
图3 OH3型泵
4.2.2.4OH4型泵
OH4型泵应是刚性联接、立式、管道式、单级悬臂式泵，见图4。刚性联接的泵，其轴与驱动机轴刚性联接(此型泵不能满足本标准的所有要求，见表3)。
图4 OH4型泵
4.2.2.5 OH5型泵
OH5型泵应是同轴联接、立式、管道式、单级悬臂式泵，见图5。同轴泵的叶轮直接装在驱动机的轴上(此型泵不能满足本标准的所有要求，见表3)。
图5 OH5型泵
4.2.2.6 OH6型泵
OH6型泵应是高速、一体、齿轮传动式、单级悬臂式泵，见图6。该型泵具有一个与泵成一体的增速齿轮箱。叶轮直接安装在齿轮箱的输出轴上。齿轮箱和泵之间没有联轴器，齿轮箱弹性联接到驱动机上。泵可为立式或卧式。
图6 OH6型泵
4.2.2.7 BB1型泵
BB1型泵应是轴向剖分、单级和两级、两端支承式泵，见图7。
图7 BB1型泵
4.2.2.8 BB2型泵
BB2型泵应是径向剖分、单级和两级、两端支承式泵，见图8。
图8 BB2型泵
4.2.2.9 BB3型泵
BB3型泵应是轴向剖分、多级、两端支承式泵，见图9。
图9 BB3型泵
4.2.2.10 BB4型泵
BB4型泵应是单壳体、径向剖分、多级、两端支承式泵，见图10。该型泵也称为节段泵、分段泵和穿杠泵。这些泵的每级间有潜在的泄漏途径(此型泵不能满足本标准的所有要求，见表3)。
图10 BB4型泵
4.2.2.11 BB5型泵
BB5型泵应是双壳体、径向剖分、多级、两端支承式泵(筒型泵)，见图11。
图11 BB5型泵
4.2.2.12 VS1型泵
VS1型泵应是通过悬吊管排出的湿坑、立式悬吊、单壳体、导流壳式泵，见图12。
图12 VS1型泵
4.2.2.13 VS2型泵
VS2型泵应是通过悬吊管排出的湿坑、立式悬吊、单壳体、蜗壳式泵，见图13。
图13 VS2型泵
4.2.2.14 VS3型泵
VS3型泵应是通过悬吊管排出的湿坑、立式悬吊、单壳体、轴流式泵，见图14。
图14 VS3型泵
4.2.2.15 VS4型泵
VS4型泵应是立式悬吊、单壳体、蜗壳、长轴驱动式液下泵，见图15。
图15 VS4型泵
4.2.2.16 VS5型泵
VS5型泵应是立式悬吊、悬臂式液下泵，见图16。
图16 VS5型泵
4.2.2.17 VS6型泵
VS6型泵应是双壳体、导流壳、立式悬吊式泵，见图17。
图17 VS6型泵
4.2.2.18 VS7型泵
VS7型泵应是双壳体、蜗壳、立式悬吊式泵，见图18。
图18 VS7型泵
5 技术要求
●5.1 单位
买方应规定泵数据、图纸和维修尺寸使用国际单位制(SI)或美国单位制(USC)。采用SI数据表(参见图C.1)表示应使用国际单位制。采用USC数据表(参见图C.2)表示应使用美国单位制。
5.2 法规要求
买方和卖方应共同确定适用于该设备及其包装和保存的措施，这些措施有必要遵守政府规范、规章、条例和规则。
5.3 要求
5.3.1 本标准与询价书有冲突时，应执行询价书。与合同内容冲突时，应执行合同内容。
5.3.2 当第9章中对特殊泵型的要求与任何其他条款有冲突时，应按第9章中规定的要求执行。
