Technical specifications for centrifugal pumps (Class III)
1 Scope
This standard specifies the terms and definitions, design, materials, factory inspection and test, and shipment preparation respecting centrifugal pumps (hereinafter referred to as pumps).
This standard covers requirements for pumps of single stage, multistage, horizontal or vertical construction (coupled or close-coupled) with any drive and any installation for general application.
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 of the referenced document (including any amendments) applies.
GB/T 3216-2005 Rotodynamic pumps - Hydraulic performance acceptance tests - Grades 1 and 2
GB/T 4662 Rolling bearings - Static load ratings
GB/T 5661 End-suction centrifugal pumps - Dimensions of cavities for mechanical seals and for soft packing
GB/T 6391 Rolling bearings - Dynamic load ratings and rating life
GB/T 7021 Glossary of terms for centrifugal pump
GB/T 9113 Integral steel pipe flanges
GB/T 17241.6 Integral cast iron pipe flanges
GB/T 29529 Methods of measuring and evaluating vibration of pumps
GB/T 29531 Methods of measuring and evaluating noise of pumps
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 7021 and the following apply.
3.1
operating conditions
all operating parameters (for example temperature, pressure) determined by a given application and pumped liquid
Note: These parameters will influence the type of construction and materials of pumps.
3.2
allowable operating range
flow range, defined by the manufacturer/supplier, at the specified operating conditions, using the impeller supplied, as limited by cavitation, heating, vibration, noise, shaft deflection and other similar criteria, with a range whose upper and lower limits are denoted by maximum and minimum continuous flow, respectively
3.3
rated conditions
specified guarantee-point operating conditions, including flowrate, head, power, efficiency, net positive suction head, suction pressure, temperature, density, viscosity and speed
3.4
driven rated power output
maximum permissible driver power output under site operating conditions
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 Design
5 Materials
6 Shop inspection and tests
7 Preparation for dispatch
Annex A (Informative) Enquiry, proposal, purchase order
Annex B (Informative) Data sheet of centrifugal pump
Annex C (Informative) Check list
Annex D (Informative) Documentation
Annex E (Informative) Examples of seal arrangements
Annex F (Informative) Piping arrangements
Bibliography
