JB/T 8862-2000 JB/T 8862-2000 Valve electric device life test procedures JB/T8862-2000 Standard download decompression password: www.bzxz.net

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Mechanical Industry Standard of the People's Republic of China
JR/T8862-2000
Electric actuator-Lifetime test procedure
Electric actuator-Lifetime test procedure2000-03-30 Issued
National Machinery Industry Bureau
2000-1-01 Implementation
JB:TB862-2000
This standard is a revision of JB/T8862-1999 (B/Z247-85 valve electric device life test procedures. Compared with JB/%862-1999, this standard has the following main technical content changes: Added new regulations on load characteristics when testing electric devices with nominal torque greater than 2500N·m.
4 Standard H returns from the test to replace JB/T8862-1999, Appendix A of the rate standard, the requirements of the competitive standard. ||t t||This standard is proposed and managed by the National Valve Standardization Technical Committee. The drafting unit of this standard is Hefei General Machinery Research Institute. The main drafter of the technical standard is Huayou.
1 Scope
Machinery Industry Standard of the People's Republic of China
Valve Electric Device: Life Test Procedure
Electric valve actuator life test procedure A/T2-0
Generation J8862-1999
This standard specifies the test requirements, test items, test methods and test report format of the life test of valve electric devices. This standard is applicable to motor-driven and contact-type valves with The life test of the gate actuator (hereinafter referred to as the actuator) of the road machine, 2 Reference standards
The texts contained in the following standards are constituted as the provisions of this standard by citing in the standards. When this standard is published, the versions shown are valid. All standards contain special revisions. Parties using this standard should explore the possibility of using the latest versions of the following standards. JB/T852B—1997 Technical conditions for ordinary valve electric devices 3 Definitions
In addition to the definitions in JB/T8528, this standard also adopts the following definitions. 3.1 Life
The electric device simulates the change of the valve opening and closing torque to perform a switching cycle operation until the electric device loses a certain performance Total number of switches.
3.2 Maximum control torque
Turn the control switch to the position of the allowable adjustment range, and gradually increase the output torque of the electric device until the torque control switch is activated. The output torque value at this time is called the maximum control torque of the electric device. 3.3 Operation and maintenance
The operating torque is a reference value for the design of the electric device. It is equal to one-half of the maximum control torque of the electric device. 4 Test requirements
4.1 Load characteristics
When the motor life test is performed, it is turned on with the operating torque and closed with the maximum control torque. If expressed in thrust, it is operated with one-half of the maximum thrust and closed with the maximum thrust. The negative characteristics are shown in the figure. For electric meters with a nominal torque of more than 2500N:m, the load characteristics of Figure 2 can be used. At this time, the operating torque can be lower than the provisions of 3.3. 4.2 Operation time
The opening and closing of the motor is considered as one operation. The time for each operation is 405. Open 109, stop 10:, 10s, stop 10$. The operation time characteristics are shown in Figure 3.
National Machinery Industry Bureau 20-3-3# approved
2000-10-01 implementation
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JB/T 8862—2000
4,3 During the life test of the electric device, the opening terminal position is controlled by the stability control switch, and the closing terminal position is controlled by the torque control switch. The test instruments (such as torque sensors, pressure sensors, recorders, oscilloscopes, etc.) should be calibrated according to the relevant requirements: 5 Test itemswww.bzxz.net
5.1 The efficiency of the whole machine,
5.2 The change of the maximum control torque.
5.3 The accuracy of the position to be controlled,
6 Test method
6.1 Install the electric device to be tested on the test bench, according to 4. 【Requirements for adjusting the load: Use the time relay to open and close according to the requirements of 4.2 and 4.3, and use a counter to record the number of tests. During the test, the electric device must not have any faults or damage. 6.2 The change in the operating efficiency of the whole machine is measured in the following way: 6.2.1 Install the electric device on the torque test load, add a torque sensor between the motor and the motor shaft gear, and measure the auxiliary torque and output torque of the electric device in the opening and closing directions before and after the test. 6.2.2 Follow formula (1) to calculate the operating efficiency: Operating efficiency
Output torque of the electric device
Motor Output torque × transmission ratio
6.2.3 The difference between the operating efficiency before and after the test should not exceed the provisions of the table, X0%
6.3 The change of the output torque of the electric device is measured at three different torque switch positions in the opening direction and the closing direction. The output torque before and after the test is measured. Each torque adjustment point is measured three times. The maximum error is not allowed to exceed the specification of 1. 64 Position control accuracy is achieved by measuring the change of the valve stem opening position before and after the test and the difference between the instantaneous support nut and the disc. The value should not exceed the provisions of Table 1.
Measurement item month
Operation efficiency| |tt||The test report shall include the following contents:
a) Schematic diagram of the structure of the electric device;
Radial and axial torque
Changes in the torque dissipation of the rod
b) Main technical parameters of the electric device (including the motor): error
≤0.2mma
c) Changes in the performance of the electric device before and after the test summarized in Table A1 of Appendix A (Appendix of the standard):
e) Principle of the test device.
Measurement and adjustment
Operation efficiency
Axle torque
Position control accuracy
Measurement efficiency
J8862-2000
Appendix A
[System records)
Test records
Table A1 Basic measurement of basic properties
According to the output torque N·m,
Torque switch
Adjustment setting
Change of valve support opening position
Measurement results
After acid test
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