Some standard content:
ICS 23.100.01
National Standard of the People's Republic of China
GB/T3766—2001
eqyIs04413:1998
General technical conditions for hydraulic systems
Hydraulic fluid power--General rules relating to systems
Issued on December 17, 2001
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Implemented on June 1, 2002
GB/T 3766—2001
ISO Foreword
References
System design
Energy conversion components
Hydraulic fluid and regulators
Supervisory system
Control system
Diagnosis and monitoring
Cleaning and painting
Transportation preparation
Trial delivery
15 Notes (when quoting this standard)
Appendix A (Reminder Appendix)
Appendix B (Reminder Appendix) Appendix (recommended appendix)
Terms to be agreed between the supplier and the purchaser
Reference to the standards for the relevant inspection conditions of hydraulic transmission
GB/T3766-2001
This standard is based on IS04413:1998 General rules for hydraulic transmission systems, a revision of GB/T3766-1983, and is equivalent to the international standard in terms of technical content. This standard deletes Appendix C, Appendix I) and Appendix L in ISO4413, because this appendix has little to do with the use of this standard and increases the length of the standard.
Based on JS(4413:1998, this standard has made some changes to GB/T3766-1983 in the following contents: adding "hazard" and "site conditions" in the "requirements" section; making the requirements in the "energy conversion elements", "valves", "pressure oil and regulating elements" and "pipeline systems" sections more detailed and specific; adding "system design", "diagnosis and monitoring", "cleaning and painting", "transportation preparation", "trial operation" and "marking instructions" sections as well as "Appendix A" and "Appendix B". In addition, in order to facilitate the use of this standard, "Appendix C" is added to provide a comparison between the domestic standards cited in this standard and the corresponding standards in IS(4413:1998). Appendix A, Appendix B and Appendix C of this standard All are indicative appendices. This standard replaces GB/T3766-1983 from the date of implementation. This standard is proposed by the China Machinery Industry Federation. This standard is approved by the National Technical Committee for Standardization of Compressed Pneumatics. The responsible drafting unit of the standard is Beijing Machinery Industry Automation Research Institute. The main contributors of this standard are Liu Xinde, Zhao Shoulin and Wu Zhiming. This standard was first published in June 1983, and this text is the second edition. GB/T3766-2001
ISO Foreword
ISO) (International Organization for Standardization) is the national standardization body of each country. ISO is a worldwide federation of international standards bodies (ISO member bodies). Normally, the work of preparing international standards is carried out through ISO technical committees. Any member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Official and non-international organizations in liaison with ISO also take part in the work. ISO collaborates with the International Technical Committee (IFC) on all matters concerning the promotion of electronic technical standards. Draft international standards adopted by the technical committees are circulated to the member bodies for voting and publication as international standards, at least for a minimum of one year. 75% of the member groups must vote in favor.
International Standard ISO 4413 was developed by the SCD Devices and Systems Technical Committee of the TS (I/TC 131 Fluid Power Systems Technical Committee. bzxz.net
This second edition has been technically revised, amended and replaced the first edition. Appendices A to D of this international standard are for reference only. T
GB/T 3766—2001
In a pressurized transmission system, power is transmitted and controlled by means of a pressurized body in a closed circuit: the application of a hydraulic transmission system requires both the supplier and the demander. This standard is intended to help achieve a thorough understanding and accurate communication between the parties, and to document many good practices gained from the experience of applying hydraulic systems. As a result, this standard helps: a) confirm and specify the requirements for hydraulic systems and components; b) identify the respective areas of responsibility; c) make the design of the system and its components meet the specified requirements; d) understand the safety requirements of the system. The general rules given in this standard do not have legal binding force unless these clauses are included in the contract between the purchaser and the supplier. Contents that are inconsistent with some parts of this standard should also be agreed in writing between the purchaser and the supplier in the contract. Applicable national or local regulations or laws should be brought to the attention of the purchaser and (or) supplier. General rules containing the verb "shall" are recommendations of good engineering practice that are generally applicable and have few exceptions. Clauses in this document using the verb "should" do not indicate options but rather indicate a desired engineering practice that may have to be modified by the particularities of a process, environmental conditions or equipment specifications. Titles and content parts marked with a symbol (*) in this document indicate sub-clauses that require negotiation between the supplier and the demander to determine the requirements and (or) responsibilities. These sub-clauses are also listed in Appendix A. 1 Scope National Standard of the People's Republic of China Hydraulic fluid power-General rules relating to systems GB/T 3766—2001 TGR 150 4413:1998 Replaces GB/T 3766 1983
This standard provides general rules for filtration systems on mechanical equipment used in industrial manufacturing processes as a guide for manufacturers and users to ensure:
a) safety;
15) continuous operation of the system;
c) easy and economical maintenance;
t) long service life of the system.
2 Referenced standards
The provisions contained in the underlined mark constitute the provisions of this standard through reference in this standard. The versions shown are valid at the time of publication of this standard. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/I 786.1—1993 Hydraulic 6 dynamic graphic symbols (neq1SO1219-1:1991) G13/T2514—1993 Four-port plate type hydraulic directional control valve mounting surface (e9vIS0) 4401:1980) GB/T 2877---1981 Two-way cartridge hydraulic valve installation connection dimensions GB4208-1993 Enclosure protection grade IP code) (eg VIF C529:1989) GB/T 5226.1-1996 Industrial machinery electrical equipment - Part - General technical conditions (eg VIEC 204-1:1992) GB/T 80981987 Plate type hydraulic flow control valve installation rain (eg VIS) 6263:1987) GB/T 8100-1987 GB/T 81011987 GB/T 14039-1993 GR/T 17446 1598 GB/T 17487-1998 GB/T 17489 :-1998
JB/T 5244--1991
JB/T 5963-1991
Plate-type connection hydraulic pressure control valve (excluding overflow valve), sequence valve, load valve, throttle valve and non-return valve installation surface (egv IS0 5781:1987)
Plate-type connection hydraulic relief valve installation surface (ea1S06264:1987) Hydraulic system working medium solid particle pollution level code (egVIS()4406:1987) Fluid transmission system and component terminology (ilt1805598:1985) Four-port and five-port hydraulic servo valve installation surface 0010372:1992) Hydraulic particle pollution analysis Extraction of liquid sample from working system pipeline (idlt1S0)4021:1992) Hydraulic reading solenoid
Through, three-way, through-through threaded cartridge valve hole size IS031219-2:1995 Fluid transmission system and components graphic symbols and circuit diagram Part 2: Circuit diagram ISO 4400:1994 Fluid transmission system and components with auxiliary points three-way plug characteristics and requirements [S06149-1:1993 Fluid transmission and general purpose pipe fittings with 1SO261 threads and O-rings, oil ports and threaded ends - Part 1, oil ports with O-rings in strobe grooves IS06162:1994 Four-way flange for hydraulic transmission, for pressures from 2.5 MPa to 40 MPa (25 bar to 40 ubar) Approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on December 17, 2001 Implementation on June 1, 2002 GB/T 3766---2001 Flange Type I Metric series and Type 1 Imperial series IS06164:1994 Four-screw integral square flange for hydraulic transmission, for pressures from 25 MPa to 10 MPa (250 bar to 400 bar) 7790.197
Fluid power systems and components - Two-pin electrical plug with earthing point - Characteristics and requirements - Four-port directional control valves and four-port directional control valves for hydraulic power - 02, 03 and 05 sizes - Dimensions ISO 8434-1:1994
Metal-backed fittings for fluid power and general purposes - Part 1: 24° compression fittings ISO 8434-2:1994
Metal-backed fittings for fluid power and general purposes - Part 2: 37° flare fittings ISO 8434-3:1995
Metal-backed fittings for fluid power and general purposes - Part 3: O-ring face seal fittings ISO 8434-4:19951
Metallic pipe fittings for fluid power and general purposes Part 4: 21° cone fittings for welded fittings with O-ring seals
1S010763:991 Dimensions and nominal working pressures of flat, seamless and end-welded precision steel pipes for hydraulic power 1S0/TR11688-1:1995 Acoustics Recommended practice for the design of low-noise machines and devices Part 1: Schemes IS012151 1:1999 Hydraulic power and general purpose fittings Hose fittings Part 1: Hose fittings with 1S0 8434-3 O-ring face seal ends
ISO 12151-2.*
Hose fittings for hydraulic power and general use Hose fittings Part 2: Fittings with ISO 8434-1 Or IS () 8434424 ° catalytic O-ring seal end of the hose connector 15 (12151-3: 1999 pressure transmission and general purpose pipe connectors hose connectors Part 3: with IS () 6162 flange end of the flexible camp connector
[S (121514:
hydraulic transmission and general use of the ridge connector
hose connectors Part 4 with ISC) 6149-2 or 1S0 6 [49-3 Hose connectors with screw-end IS12151-5-1) Hydraulic transmission general purpose connectors Flexible connectors Part 5: Flexible connectors with flared ends 1508434-237 Definitions
This standard adopts the definitions given in GB/T17416 and the following definitions. 3.1 Actuator
Component that converts hydraulic energy into mechanical energy (e.g. hydraulic cylinder, hydraulic motor). 3.2 Commissioning
Procedure for formal acceptance of the system by the purchaser.
3.3 Component
A functional part of a hydraulic transmission system. An independent unit composed of one or more components (e.g. a cylinder, a motor, a valve, a valve, but excluding pipelines).
3.4 Control mechanism cantrol merhanisn A device that provides input signals to components (e.g. handle, solenoid). 3.5 Emergency control
Control function that brings the system into a safe state. 3.6 Function plate
A sign containing information describing the performance of the operating device (e.g., slide/close, advance/reverse, left/right, down/up) or the functional state of the system (e.g., tighten, lift and advance). 3.7 Operating device
A device that provides input signals to the control mechanism (e.g., cam, electric switch). 1.
3.8 Back-circuit piping
GB/T 3766-200
Any combination of pipe fittings, hose connectors and connectors with pipes or hoses that allows fluid to flow between components: 3.9 Party murehasen
Specifies requirements for devices, equipment, systems or components and evaluates whether the product meets these requirements. 3.10 Supplier
A party that contracts to provide products that meet the requirements of the purchaser. 3.11 System
A device that transmits and controls pressure energy from interconnected components. 4 Requirements
4.1 Overview
In 4.1.1 to 1. The requirements given in 5 apply to all systems within the scope of this standard. 4.1-1 Instructions
The hydraulic system shall be installed and used in accordance with the instructions and recommendations of the system supplier. 4.1.2 Language ×
The purchaser and supplier shall agree on the language used for machine markings and applicable documents. The supplier is responsible for ensuring that the translation has the same meaning as the original text. 4.2 Hazards *
When agreed upon by the purchaser and supplier, an evaluation of the hazards listed in Appendix B shall be performed. This evaluation may include the impact of the hydraulic transmission system on other parts of the machine, systems or the environment. The standards listed in Appendix 3 may be used for this evaluation. Whenever possible, the identified hazards shall be eliminated by design. If this is not possible, the design shall include preventive measures for these hazards.
4.3 Safety requirements
4.3.1 Design considerations
When designing a fluid system, all possible failures (including failure of the control power supply) should be considered. In all cases, components should be selected, installed and adjusted in such a way that, in the event of a failure, the safety of personnel should be considered first. Consideration should be given to preventing hazards to the system and the environment: 4.3.2 Selection of components
To ensure safety in use, all components in the system should be selected or specified. The selection or specification of components should ensure that, when the system is used as intended, these components will operate reliably within their rated limits. Particular attention should be paid to the reliability of those components whose failure or malfunction may cause hazards.
4.3.3 Accidental pressure
The system should be designed to prevent the pressure of all parts from exceeding the maximum working pressure of the system or any part of the system and the rated pressure of any specific component. Otherwise, other protective measures should be taken. The preferred protection method to prevent excessive pressure is to install one or more flow valves to limit the pressure of all parts of the system. Other methods that can meet the requirements of use can also be used, such as: using a variable displacement pump with pressure compensation. The design, development and commissioning of the system should minimize the impact pressure and boost pressure, and the impact pressure and boost pressure should not cause danger. Pressure loss or pressure drop should not put personnel in danger. 4.3.4 Mechanical movement
Whether it is planned or unexpected mechanical movement (including movement such as acceleration, deceleration or lifting and clamping of objects), it should not cause a dangerous state for personnel.
4.3.5 Noise
For the design of low-noise machines and systems, see ISO/TR116881. 4.3.6 Leakage
GE/T 3766—2001
Leakage (internal or external) should not cause danger: 4.3.7 Temperature
4- 3 7. 1 Operating temperature
The entire operating temperature range of the system or any component should not exceed the specified safe use range. 4.3.7.2 Surface temperature
The hydraulic system design shall protect personnel from surface temperatures exceeding the touch limit by arranging or installing protective devices. 4.4 System requirements*
The purchaser and supplier shall determine the technical specifications for the operation and function of the system, including: a) operating pressure range; b) operating temperature range; c) type of hydraulic oil used; d) cycle rate; e) low cycle characteristics; 1) component life; g) action sequence; h) lubrication; 2) lifting requirements: i) emergency and safety requirements; k) details of paint protection layer.
4.5 Site conditions*
4.5.1 Technical conditions
All information required for the proper selection and application of the system should be specified in the inquiry. The required information is for example:
! Ambient temperature range of the equipment:
h) Ambient humidity range of the equipment +
c) Available public facilities, such as electricity, water, waste disposal;) Power grid conditions, such as voltage and its tolerance; frequency, available power (if limited); e) Protection of electrical devices:
f) Atmospheric pressure;
) Pollution
h) Vibration source;
) Severity of possible fire or explosion hazards:
i) Available maintenance standards:
k) Safety margin, such as flow, pressure and volume 1) Maintenance, use and passage space, and layout and installation to ensure stability and safety of components and systems in use:
) Available cooling and heat media and quantity,) Protection requirements:
) Legal and environmental restrictions:
p) Other safety requirements.
4. 5. 2 Drawings
The supplier shall provide drawings agreed upon by the purchaser and the supplier, which shall indicate: a) plane layout, including location and installation dimensions; b) infrastructure requirements, including ground loads: (a) water supply requirements, d) power supply requirements: GB/T3766—2001
c) general circuit layout (photos may be used upon agreement). 5 System Design
5. 1 Circuit Diagram
The supplier shall provide a circuit diagram in accordance with ISO1219-2. The circuit diagram reflects the system design, identifies components and meets the requirements of clause 4. The following information should be included in or provided with the circuit cabinet: a) the name of all devices, catalog number, serial number and design number and the manufacturer or supplier's name identification; b) the diameter, wall thickness and technical conditions of hard pipes and the diameter and technical conditions of hoses; c) the inner diameter of each hydraulic cylinder, including the rod diameter, stroke length, and the estimated maximum thrust and speed required for the expected operation; d) the displacement, maximum output torque, speed and rotation direction required for the expected operation of each hydraulic motor; e) the flow rate of each pump and the direction of rotation viewed from the drive shaft end; g) the power, speed and model of the prime mover of each pump; h) the type of strainer, filter and filter element; i) the volume of hydraulic oil required to fill the system to the maximum liquid level; the type and viscosity of the hydraulic oil; k) when specified, the table 1) A timing diagram showing the operations to be performed (including functions related to electronic control, mechanical control and actuators): such as: cycle time range and data or text, or both; 2) A clear indication of the sub-circuits contained in the oil circuit block; for this purpose, boundary lines or borders can be used, and the boundary lines should include symbols of components installed on the oil pedal block or in the oil circuit block; 3) A clear indication of the functions of each actuator or each part; 4) The nominal capacity of the inflation pressure agent of the energy saver; 5) The location of the pressure test point, the pressure liquid sampling point and the venting point in the circuit; 6) The identification of the oil ports of all components or oil circuit blocks (consistent with those marked on the components or oil circuit blocks); 7) The expected flow rate and the maximum and minimum pressures of the cooling medium, as well as the maximum temperature of the cooling medium source; 8) The identification of all electrical signal converters, consistent with those marked on the circuit diagram. 5.2 Identification
5-2.1 Components
The supplier shall provide the following detailed information: If possible, the following shall be permanently and clearly indicated on all components: a) Name and brief description of the manufacturer or supplier; b) Manufacturer or supplier's product identification;
) Rated pressure: d) Drawing number in accordance with G1/T786.1, including the correct marking of all throttles. In cases where insufficient available space may result in the text being too small to be clearly read, the information may be provided on supplementary materials such as instructions/maintenance activities, record activities or auxiliary labels. 5-2.2 Components in the system
Each component shall be given a unique component number and/or letter, which shall be used to identify the component in all schematics, lists and drawings and shall be clearly and permanently marked on the equipment in the vicinity of the component, but not on the component. The order of the components to be added shall be clearly marked on the floor of the assembly and not on the assembly block: 5.2.3: Oil pump
GB/T 3766—2001
All oil ports, power take-off points, test points and venting points and oil drain ports (e.g. tank drain) shall be clearly and conspicuously marked. The markings shall be consistent with the information on the circuit diagram. When components are provided with standard oil port markings provided by the supplier, these markings shall be supplemented with markings consistent with the circuit diagram (see 5.2.1 and 5.2.2)
5.2.4 Electrical control mechanisms
5.2.4.1 Electrical control mechanisms
Electromagnetic control mechanisms and their associated plugs or cables shall be marked with the same markings on the circuit diagram and hydraulic circuit diagram.
5.2.4.2 Non-electric control mechanism
Non-electric control mechanism shall be clearly and permanently marked with the same markings as the circuit diagram. 5.2.5 Internal devices
Installation and installation of other functional components (damping, reverse flow, calibration valve, check valve, etc.) in oil blocks, mounting plates, bases or pipe joints shall be marked near their insertion holes. When the manhole is located under one or more components, it shall be marked near the component if possible and marked "internal".
5.2.6 Function signs
Each control point shall be provided with a function sign: and it shall be located in an easily readable position. The information on the function sign shall be appropriate and easy to convey, and shall provide a clear identification of the function of the system controlled. 5.3 Installation, use and maintenance
Components and piping shall be selected, applied, installed and used in accordance with the instructions and recommendations of the supplier. Components manufactured in accordance with recognized international or national standards should be selected. 5.3.1 Component Replacement
To facilitate servicing, appropriate means should be provided or components should be installed in an appropriate manner. When components are removed from the system for servicing: a) no excessive loss of hydraulic fluid should occur; b) draining of the oil tank should not be required:
The components should be placed too close to adjacent parts. 5.3.2 Maintenance Requirements
When designing and constructing the system, components should be arranged in positions that are easily accessible and can be adjusted and repaired safely. Components, including ridges, should be easily accessible and installed to facilitate adjustment or repair. Special attention should be paid to the arrangement of systems and components that require regular servicing.
5.3.3 Lifting Facilities
All components or parts with a mass of more than 15 kg should have lifting facilities. 5.3.4 Component Installation
Components should be installed so that they can be easily approached from a safe working position (e.g., ground or work platform). Usually, the lower edge of the component should be installed at least 1m above the workbench, and the upper edge should not be higher than 1.8m above the work platform.
5.4 Use of standard parts
The components (such as bearings, packings, fittings, pipe joints, washers, brackets, etc.) that can be purchased on the market and the components that meet the current national standards and have unified numbers should be connected and installed (shafts and spline keys, drawers, bases, mounting surfaces or cavities, etc.).
5.5 Seals and sealing devices
5.5.1 Materials
The materials of seals and sealing devices should be compatible with the oil used, the adjacent materials and working conditions and environmental conditions. 5.5.2 Replacement
GB/T 3766-2001, etc. The design of parts should make the inspection and replacement of seals and sealing devices, maintenance and operation information, and maintenance and operation information. The system supplier should provide necessary maintenance and operation information. This information clearly: a) Describe the start-up and shutdown procedures; b) Give all required decompression procedures and indicate those parts of the system that cannot be decompressed by the exhaust device with a belt; c) Describe the adjustment sequence; l) Indicate the external lubrication points, the type of lubricant required and the time intervals for observation and filling; e) Indicate the level indicators, oil filling points, oil drain points, filters, and test points that need to be scheduled for maintenance. 1. The location of pilots, filters, magnetic bodies, etc.; 2. Specify the allowable optimal contamination level of hydraulic oil; 3. Give the current maintenance procedures for hydraulic oil alarms; 4. Provide suggestions for the use and handling of hydraulic oil and lubricants; 5. Specify the flow rate, maximum temperature and allowable pressure of the cooling medium required for sufficient cooling; 6. Explain the maintenance procedures for special components; 7. Further provide the identification of hydraulic parts available on the market or manufactured according to national standards: The identification should be the number specified by the manufacturer of the component or by the adopted national standard; 8. List the recommended spare parts, 9.7 Operation and maintenance manual
The system supplier shall provide a manual describing the operation and maintenance of the system. This shall include the requirements described in 5.6 and instructions and/or maintenance information for components and piping.
5. 8 Oil ports
All oil port connections shall comply with:
ISO5[49-1 (for threaded ports and threaded ends) or ISO6162 or ISO6164 (for screw flange oil connections). 5.9 System temperature
5.9.1 Heat generation
The hydraulic system shall be designed to minimize unnecessary heat generation: 5.9.2.1 Operating temperature
Check the operating temperature range of the specified system. The temperature of the hydraulic oil shall not exceed the range in which it can be used reliably and shall be within the specified operating temperature range of all components in the system. 6 Energy conversion elements
6.1 Hydraulic pumps and motors
6. 1. 1 Protective measures
Hydraulic pumps and motors should be installed in places where they can be protected from damage or with appropriate protective devices. Appropriate protection should be taken for all drive shafts and couplings. 6.1.2 Mechanical equipment
) Do not be close to the following during maintenance:
b) Do not cause axis misalignment as a result of load cycle changes, speed changes or applied pressure loads;) Axial and radial forces caused by the motor should be within the range specified by the motor supplier;) The drive coupling and base have the ability to repeatedly withstand the maximum torque generated under the right working conditions: t) Use couplings with sufficient damping to limit the transmission and expansion of torsional vibrations. 6.1.3 Speed considerations
The speed should not exceed the maximum speed specified in the supplier's documentation. 7
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