1 Scope
This standard specifies common technical conditions of hydraulic system for mechanical equipments used in aspects of metallurgy, rolling, heavy forging and so on (hereinafter referred to as mechanical equipments). As for hydraulic systems (hereinafter referred to as system) for mechanical equipments above, corresponding technical requirements in design, fabrication and acceptance may be materialized and supplemented according to the principles of this standard in combination of the relevant standards.
This standard is applicable to mechanical equipments hydraulic system whose nominal pressure is not larger than 31.5 MPa.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For the dated references, the subsequent amendments to (excluding amending error in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For the undated references, the latest edition of the normative document is applicable to this standard.
Contents
1 Scope
2 Normative References
3 General Requirements
3.1 Basic Requirements
3.2 Design conditions
3.3 Safety Requirements
3.4 Energy conservation requirements
3.5 Working temperature
3.6 Pipeline flow rate
3.7 Noise
3.8 Selection basis
3.9 Cleanness control
3.10 Manufacture reference
3.11 Basic requirements for maintenance
3.12 Hoisting measure
3.13 Data for Installation, operation and maintenance
3.14 Acceptance data
3.15 Marking
3.16 Operating force
3.17 Tightening torque
4 Hydraulic oil (liquid)
5 Quality of casting, forging, welding and pipe fittings
6 Welding requirements
6.1 Basic requirements
6.2 Oil tank welding
6.3 Pipeline welding
7 Processing quality
8 External Leakage
9 Hydraulic action element
9.1 Hydraulic cylinder
9.2 Hydraulic motor
9.3 Installing base
10 System Equipment Assembly
10.1 Hydraulic pumping unit
10.2 Oil tank apparatus
10.3 Other Auxiliaries and Requirement
10.3.1 Heat Exchanger
10.3.2 Filter
10.3.3 Accumulators
10.3.4 Pressure Gauge
10.3.5 Sealing Member
10.4 Installation of Hydraulic Valve
10.5 Manifold Block
11 Pipeline
11.1 Fittings Material
11.2 Requirements for Fittings Tolerance
11.3 Pipeline installation shall conform to the following requirements
11.4 Laying in Ditch
11.5 Tube Bending
11.6 Hose
11.7 Fixings of Pipeline
11.8 Sampling Point of Pipeline
12 Wiring of Electrical Appliance
13 Controlling
13.1 Protective device of Circuit
13.2 Manual Overvide
13.3 Controlling on Valve
13.4 Installation Requirement of Control Device
13.5 Interrelationship of Circuit
13.6 Serve Control Circuit
13.7 Controlling Requirements on Hydraulic Pump Station
14 Flushing
15 Test
16 Coating
16.1 Basic Requirements
16.2 Tinting Requirement
17 Package, Transportation and Storage
Annex A (Informative) Flushing Cleanliness Level Standard of Hydraulic Systems Assembly
