Device for testing sealing performance of motor valve

Abstract

The invention discloses a device for testing the sealing performance of a motor valve. The device comprises a cabinet, a motor valve state control circuit, an air pump control circuit, an air pump, a pressure sensing circuit, a numeric comparison circuit and a test result display unit. The motor valve to be tested is adjusted to be in a closed state through the motor valve state control circuit, inflation and pressurization are carried out on the motor valve in the closed state through the air pump control circuit, the internal and external differential air pressure of the inflated motor is measured through the pressure sensing circuit, a measurement result is obtained, the measurement result is compared with a preset numerical value through the numeric comparison circuit, the information with respect to test qualification of the sealing performance of the motor valve is displayed when the comparison result shows that the measurement result is larger than the preset numerical value, and the information with respect to test disqualification of the sealing performance of the motor valve is displayed when the comparison result shows that the measurement result is smaller than the preset numerical value. According to the device, the sealing performance of the motor valve can be automatically tested, and testing efficiency is improved.

Description

technical field [0001] The invention relates to the field of motor valve detection, in particular to a device for testing the sealing performance of a motor valve. Background technique [0002] In the motor valve manufacturing industry, the motor valve products that have just been produced need to be tested for sealing performance. A motor valve with qualified sealing performance is a product with qualified quality. [0003] In the prior art, the method of testing the sealing performance of the motor valve is mainly that the staff adjusts the motor valve to the closed state, and then uses a pressure gauge to test whether the motor valve in the closed state can withstand a certain degree of air pressure. In practical applications, the staff can use the inflation device to inflate the inside of the closed motor valve, and then read the value displayed on the pressure gauge. If the value on the pressure gauge is greater than the preset value within a certain period of time af...

AI Technical Summary

Problems solved by technology

[0004] However, in the method of testing the sealing performance of the motor valve in the prior art, since the value on the pressure gauge is directly read by the naked eyes of the staff, there is an error in the value read by the naked eye, and when the working time is long, The staff will be fatigued, the error will be further increased, and the test efficiency will be reduced

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