Automatic drain valve leak detection device and detection method

Abstract

The invention relates to the field of testing devices for auto parts, and aims to provide a sealing performance testing device and a testing method for an automatic drain valve. An automatic water discharge valve sealing performance detection device, comprising a water discharge valve holding mechanism, a first two-position three-way normally open valve connected at one end, a second two-position three-way normally open valve, a two-position two-point normally closed valve, a differential pressure sensor, and one end respectively A first two two three normally closed valve and a second two two three normally closed valve communicated with the other end of the first two two three normally open valve, and a reference cavity communicated with the other end of the second two two three normally open valve The two ends of the two-two normally closed valve are respectively connected with the other end of the first two-two three-way valve and the other end of the second two-two three-way valve; the two ends of the differential pressure sensor are respectively connected with the first The other end of the two-position three-way valve communicates with the other end of the second two-position three-way valve. The automatic drain valve sealing performance detection device has good detection accuracy and high detection efficiency. The sealing performance testing method of the automatic drain valve can meet the testing requirements for the sealing performance of the automatic drain valve.

Description

technical field [0001] The invention relates to the field of testing devices for auto parts, in particular to a sealing performance testing device and a testing method for an automatic drain valve. Background technique [0002] During the use of the car, frequent braking will cause water and oil accumulation in the air storage tank in the air brake circuit, which will seriously affect the normal operation of the braking system. For this reason, various vehicle air storage tanks are equipped with Water discharge switch, some water discharge switches are placed at the side of the body skirt, and the air pressure of the air storage tank is used to release water to discharge. When the air pressure of the air storage tank is lower than the specified drainage pressure, the accumulated water in the air storage tank cannot be exhausted by using the water discharge switch; With this structure, the water discharge switch is directly installed at the bottom of the air tank, and people ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of poor detection accuracy and low detection efficiency due to the absence of a suitable automatic water discharge valve sealing test device at present, and to provide an automatic water discharge valve with better detection accuracy and higher detection efficiency. Valve tightness testing device and testing method

Images