Automatic water drain valve sealing detection device and detection method

Abstract

The invention relates to the field of automobile part detection device, and aims to provide an automatic water drain valve sealing detection device and detection method. The automatic water drain valve sealing detection device comprises a water drain valve holding mechanism, a first two-position three-way normally-open valve with one connected end and a second two-position three-way normally-open valve, a two-position two-way normally-closed valve, a differential pressure sensor, a first two-position three-way normally-closed valve, one end of which is connected to the other end of the first two-position three-way normally-open valve, and a second two-position three-way normally-closed valve, and a benchmark tank, whose benchmark cavity is connected to the other end of the second two-position three-way normally-open valve; the two ends of the two-position two-way normally-closed valve are respectively connected to the other end of the first two-position three-way normally-open valve and the other end of the second two-position three-way normally-open valve; and the two ends of the differential pressure sensor are respectively connected to the other end of the first two-position three-way normally-open valve and the other end of the second two-position three-way normally-open valve. The automatic water drain valve sealing detection device has the advantages of good detection precision and high detection efficiency, and can meet the detection requirements for automatic water drain valve sealing detection.

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

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