MT 241-91 People's Republic of China Department of Energy 1991-03-23 ​​Approval 1991-08-01 Implementation 1 Subject Content and Scope This standard specifies the technical requirements, test methods, inspection rules and Logo, packaging, storage This standard applies to the axial drive swash plate plunger valve with the valve reciprocating electric water pump, the pump to transport water or physical properties similar to the liquid water. This standard does not apply to crank rod drive transmission reciprocating pump. 2 reference standard GB 7784 motor reciprocating pump test method GB 10111 using random number dice random sampling method 3 technical requirements 3.1 water pump shall comply with the requirements of this standard and the procedures approved by the drawings and technical documents. 3.2 Self-made pieces after passing the test, the outer parts, purchased parts with the certificate or the test before passing the assembly. 3.3 materials should be certified or tested before use. 3.4 The exposed surface of the product should be painted, smooth coating, firm adhesion, consistent color, there should be no wrinkles, peeling, bubbles and other defects. 3.5 product assembly test run, requires stable operation, no abnormal sound, vibration, temperature and leakage. 3.6 products in operation, the temperature rise of lubricating oil should not exceed 40 ℃. 3.7 Products in operation, the water seal leakage should not exceed 1.0L / h, the remaining seals should not have external leakage. 3.8 products in operation, the noise should not exceed 85dB (A). 3.9 Product safety valve should be sensitive and reliable. 3.10 Under rated conditions, the volume factor of water injection pump shall comply with the provisions of Table 1. Table 1 Item Rated discharge pressure, MPa ≥8 ~ 16 Pump speed, r / min 960 Volumetric coefficient,% ≥92 ≥91 ≥91 ≥90 3.11 Under rated conditions, the efficiency of water injection pump should be in accordance with the table 2 provisions. Table 2 Item Number of Plungers 5 7 Pump Efficiency,% ≥77 ≥75. 12 Under rated conditions, the motor input current should be less than 95% of its rated current value. 3.13 Products in rated conditions continuous operation 500h period, the performance indicators should be consistent with this standard 3.6, 3.7, 3.10, 3.11 of the provisions. Note: The water seal and primary valve spring are allowed to be replaced once during continuous operation. 3.14 product overload test, there should be zero, parts damage phenomenon. 3.15 In compliance with user instructions under the conditions of the water pump, the manufacturer shipped within 18 months from the date of manufacture, the product is indeed due to poor manufacturing can not be used normally or zero, parts damaged, the manufacturer should be repaired for the user free of charge products or Replace zero, parts (excluding the consumables listed in the product manual). 4 Test Methods 4.1 General Provisions: 4.1.1 test medium used for 0 ~ 500 ℃ water. 4.1.2 Test equipment schematic diagram should be consistent with Appendix A of GB 7784. 4.1.3 Instrument indicates the measured value of the parameter fluctuation range, the total error value should be consistent with GB 7784 Table 2, Table 3, Table 4 requirements. 4.1.4 Parameter measurement and measuring instruments 4.1.4.1 Flow, pressure, temperature, pump speed, power and other parameters Measurement and measurement accuracy of the instrument shall comply with the provisions of 3.1 to 3.5 GB 7784 . 4.1.4.2 During the test, the readings of all instruments should be read or recorded at the same time. The number of measurements for each measured parameter should be not less than 3 times (leakage measurement only 1 time), take the arithmetic mean as the measured value. 4.1.5 Data processing should be consistent with the provisions of Chapter 4 of GB 7784. 4.2 Appearance Quality Inspection: Visual inspection method according to the provisions of 3.4 of this standard. 4.3 Commissioning: Commissioning should be carried out according to the provisions of Article 2.3.1 of GB 7784. 4.4 Lubrication oil temperature rise test: The test should be GB 7784 of the provisions of 3.3.3. 4.5 With a minimum graduation value of not less than 10mL, the rated volume of not less than 250mL measuring cylinder seal water leakage, measurement time should not be less than 10min. 4.6 Determination of noise should be GB 7784 Appendix C of the C2, C3, C4 provisions. 4.7 Safety valve test: 4.7.1 safety valve should be tested in the water pump operation. 4.7.2 test, gradually close the drain line valve to improve the discharge pressure, check the safety valve, the opening pressure should be rated discharge pressure of 1.0 to 1.3 times. 4.8 rated condition test point: 4.8.1 according to GB 7784 3.1.3.4 at the same time determine the injection pump flow and pump speed, and calculate the volume factor. 4.8.2 rated value for the injection pump with motor rated current value of 1.5 to 2.0 times the minimum scale value of not less than 1A, the accuracy of not less than 1.5 ammeter, the determination of motor input Current value. 4.9 Continuous operation test: 4.9.1 Test operation, safety valve test, rated conditions point test water injection pump can be tested. 4.9.2 The test shall comply with the provisions of 2.3.2 of GB 7784. 4.10 overload test: 4.10.1 test run, safety valve test, the rated conditions point test qualified water pump can be carried out in this test. 4.10.2 Overload test pressure of 1.25 times the rated discharge pressure, the duration of 15min. 4.10.3 according to the standard 3.14 provisions of the overload test and check the product. 5 Inspection Rules 5.1 water pump should be factory inspection and type inspection. 5.2 Factory inspection: 5.2.1 Each injection pump should be factory quality inspection department inspection, inspection and issued to the certificate before leaving the factory. 5.2.2 Each injection pump should be factory inspection according to the provisions of 3.4, 3.9, 3.10, 3.12 of this standard. Note: Each water pump after the factory inspection, should be in addition to pump casing oil and valve body remaining water, the corresponding anti-rust treatment, the exposed port