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1 Scope This standard specifies the industrial valve pneumatic device (hereinafter referred to as "pneumatic device") the definition, technical requirements, test methods, inspection rules, signs, packaging and storage. This standard applies to industrial valves for linear motion linear pneumatic devices, and for rotary motion rotary pneumatic device (360 ° rotation), with electromagnetic control of pneumatic devices. Working conditions: temperature -20 ℃ ~ 80 ℃; gas source should be clean, dry air, shall not contain corrosive gases, solvents or other liquids; 2 norms Sexual references The terms of the following documents become references to this standard as terms of this standard. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to reach an agreement in accordance with this standard study whether the latest version of these documents can be used . For undated references, the latest version applies to this standard. GB / T 699 quality carbon structural steel GB / T 700 carbon structural steel (GB / T 700-1988, neq DIN 630: 1987) GB / T 1173 cast aluminum alloy (GB / T 1173-1995, neq ASTM B26: 1992) GB / T 1176 casting copper alloy technical conditions (GB / T 1176-1987, neq ISO 1338: 1977) GB / T 1220 stainless steel rods GB / T 1220-1992, neq JIS G4303: 1988 GB / T 7306.1 55 ° Sealing Tube Threads Part 1: Cylindrical Internal and External Taper Threads (GB / T 7306.1-2000, eqv ISO 7-1: 1994) GB / T 7306.2 Sealant Pipe Threads Part 2, Threads (GB / T 7306-2-2000, eqv ISO 7-1: 1994) GB / T 7307 Non-hermetic pipe threads (GB / T 7307-2001, eqv ISO 228-1: 1994) GB / T 12222 multi-turn valve drive connection (GB / T, ISO 5210: 1991, MOD) GB / T 12223 part of the rotary valve drive connection (GB / T, ISO 5211: 2001, MOD) GB / T 13306 signs QB / T 3625 Teflon sheet QB / T 3626 Teflon rods 3 Terms and Definitions The following terms and definitions For this standard. 3.1 linear pneumatic linear actuator In a closed gas circuit, relying on the role of compressed air pneumatic device output shaft for linear motion pneumatic device. 3.2 Rotary pneumatic actuator rotary pneumatic actuator In the closed gas circuit, relying on the role of compressed air so that the pneumatic device output shaft less than 360 ° rotary motion pneumatic device. 3.3 Pneumatic stroke stroke of pneumatic actuator Under the action of compressed air, the displacement of the output shaft of the pneumatic device along its axis or its angular center around its axis. 4 Technical Requirements 4.1 Pneumatic Device Structure 4.1.1 Pneumatic devices should be cylinder, opening instructions, travel limit, pneumatic components, manual agencies, signal feedback and other components. 4.1.2 Pneumatic device and valve connection dimensions should be consistent with the provisions of GB / T 12222 and GB / T 12223 requirements. 4.1.3 Pneumatic device with a buffer mechanism, the buffer mechanism stroke length can refer to the provisions of Table l. 4.1.4 pneumatic device with adjustable buffer mechanism, there should be a cylinder body to adjust the cushioning mechanism. 4.1.5 pneumatic device with a manual mechanism, when the gas source is interrupted, it should be able to use its manual valve opening and closing operation, facing the hand wheel, hand wheel or handle counterclockwise rotation of the valve open, clockwise rotation of Valve closed. 4.1.6 piston rod end for the internal and external threads, there should be a standard wrench wrench mouth. 4.1.7 piston seal should be easy to replace and overhaul. 4.1.8 Cylinder inlet and outlet thread size should be consistent with the provisions of GB / T 7306.1, GB / T 7306.2 and GB / T 7307 requirements. 4.2 Performance 4.2.1 Pneumatic device rated output force or torque should be consistent with the provisions of GB / T 12222 and GB / T 12223 requirements. 4.2.2 In the case of no-load, the air pressure input in the cylinder according to Table 2, the action should be smooth, no jamming and crawling phenomenon. 4.2.3 Under the air pressure of 0.6MPa, the output torque or thrust force of the pneumatic device in the two directions of opening and closing shall not be less than the value indicated on the sign of the pneumatic device, and the action shall be flexible, and the permanent deformation of each part shall not be allowed And other anomalies. 4.2.4 Sealing test When the maximum working pressure is tested, the amount of air leaking from the side of each back pressure shall not exceed (3 + 0.15D) cm3 / min (standard state); leakage from the end cap and the output shaft The amount of air must not exceed (3 + 0.15d) cm3 / min. Note: D is the cylinder diameter, d is the diameter of the output shaft, in mm; for the vane cylinder, D take a third of the perimeter of the blade. 4.2.5 Strength test 1.5 times the maximum working pressure test to maintain the test pressure 3min, the cylinder cover and static sealing parts are not allowed leakage and structural deformation. 4.2.6 The number of operating life, the pneumatic device to simulate the valve action, in both directions to maintain the output torque or thrust capacity of the case, the opening and closing operation of the opening and closing times should not be less than 50,000 times (Kai - closed loop once). 4.2.7 pneumatic device with a buffer mechanism, when the piston moves to the stroke end position, the impact phenomenon is not allowed. 4.3 Surface and appearance quality 4.3.1 Casting cylinder end caps, flange end, the box shall not have scratches, nicks, pores, burrs and so on. 4.3.2 Pneumatic equipment The outer surface of the paint layer or chemical treatment layer should be smooth, smooth, uniform color, no oil, indentation and other mechanical damage. 4.4 Materials The main parts of the common materials, see Appendix A. 5 Test Method 5.1 No-load test 5.1.1 Pneumatic devices placed horizontally, alternately applied to both sides of the cylinder pressure specified in Table 2, the exhaust side open to the atmosphere, the pneumatic device for switching operations. Test results should be consistent with the provisions of 4.2.2. 5.1.2 cylinder with a buffer mechanism, in the no-load test, the buffer valve should be fully open. 5.2 Strength test Using 70% kerosene and 30% spindle oil mixed oil or compressed air as the medium, 1.5 times the maximum working pressure of the cylinder (the maximum allowable pressure value), alternately to the cylinder to exert pressure and maintain the pressure after 3min , Observe the cylinder appearance and disintegration inspection, the results should be consistent with the provisions of 4.2.5. When testing with air, safety precautions must be taken. 5.3 load test The pneumatic device is mounted on the test bench, respectively, to the cylinder pressure of 0.6MPa compressed air, and the gradual application of torque or thrust to the output shaft, the amount of time the pneumatic device output torque or thrust, the value of not less than the pneumatic device Rating of the sign At the same time manual agencies, opening instructions, limit travel, information feedback and other components one by one inspection, the results should be consistent with the provisions of 4.2.3. 5.4 sealed test Pneumatic device in the case of no load, alternately from the two intake air pressure of 1.1 times the maximum working pressure of compressed air, check the piston, the output shaft at the amount of leakage. Pressure 3min, the amount of leakage should be consistent with the provisions of 4.2.4. Seal test another test method: Check the pressure gauge indicates the pressure for 5min, gauge pressure does not fall to pass. Choose one of two methods. 5.5 Action life test The pneumatic device is mounted on the test bench, the rated output torque under the load, the analog drive valve opening and closing movements of the cycle operation until the pneumatic device output torque or thrust is less than the specified rated torque or thrust, this time The number of actions is the number of life. Action life frequency should be consistent with the provisions of 4.2.6 6 Inspection rules 6.1 factory inspection Each pneumatic device factory inspection before delivery, factory inspection items and technical requirements in accordance with the provisions of Table 3. 6.2 Type tests 6.2.1 Type tests shall be carried out in one of the following cases: a) a trial-type qualification of the new product or the conversion of the old product to a factory; b) when the normally-produced product has design, process, production equipment, management, etc. Large changes may affect the performance of the product; c) normal production, regular or accumulated after a certain amount of production, should be a periodic test; d) long-term non-production of products to resume production; c) the factory inspection results and the last type When there is a big difference in the test; f) when the national quality supervision agency proposes the type test. 6.2.2 Type tests shall be taken randomly from products that have been inspected by the manufacturer's quality control department for inventory pneumatic equipment or products that have been provided to users but have not been used. The minimum number of sampling for the 10 units, the number of samples for the three units. When the user samples, the number of samples for sampling is not limited. 6.2.3 Type test items According to the provisions of Table 3, the service life test from 1 to 2 sets of tests. 6.2.4 Type test technical requirements According to the provisions of Table 3, all test items should meet the provisions of Table 3. Table 3 7 Marking, packaging, storage 7.1 Marking Pneumatic product should be clearly marked parts of the product should be equipped with signs, signs should be consistent with the provisions of GB / T 13306 and shall be marked the following: a) the name of the manufacturer; b) the product name and model; c) Output rated torque or thrust; d) Working pressure of cylinder; e) Product's serial number; f) Date of manufacture. 7.2 Packaging 7.2.1 Pneumatic devices should be shipped packing, and should be fixed in the box. 7.2.2 crates should be strong, rainproof. A) The name and address of the manufacturer; b) The name and type of the product; c) The name and address of the receiving unit; d) The contract number; e) The gross weight and volume (Length × width × height). 7.2.3 The pneumatic device should be accompanied by the packing list of the product certificate, the instruction manual of the product and the seal stamped by the manufacturer. The packing list shall include the following contents: a) the name and address of the manufacturer; b) the name, model, Standard number; c) product serial number; d) net weight of the product; e) the attached documents, spare parts name and quantity; f) packing quantity; g) packing date. 7.3 Storage The product should be stored in a well-ventilated, dry and clean room.