Device and method for detecting sealing property of sealing component

Abstract

The invention relates to a device and a method for detecting the sealing property of a sealing component. The device of the invention comprises a steam generator, an autoclave and a control system, wherein the steam generator is used for heating a medium to generate steam and pressure; the autoclave is provided with an inner cavity, and comprises an upper mold plate, a lower mold plate, a sealing component to be detected and an auxiliary seal ring, wherein the sealing component to be detected is loaded between the upper mold plate and the lower mold plate; the auxiliary seal ring is positioned outside the sealing component to be detected; a leak detecting cavity is enclosed between the sealing component to be detected and the auxiliary seal ring; the inner cavity of the steam generator is communicated with the inner cavity of the autoclave through a steam supply pipeline; the detecting device also comprises a detecting gas passage communicated with the leak detecting cavity and a working gas supply system communicated with the detecting gas passage; and a hygroscope positioned at downstream of the leak detecting cavity is arranged on the detecting gas passage. In the invention, dry working gas takes the steam leaked in the leak detecting cavity away, and the instant and average leakage rates of the sealing component are computed by measuring the moisture change of the working gas before and after passing through the leak detecting cavity.

Description

technical field [0001] The invention relates to a device and a method for detecting the performance of a sealing member, in particular to a device and a method for detecting the sealing performance of a sealing member under high temperature and high pressure steam conditions. Background technique [0002] Usually, in order to ensure that the seals can be safely sealed and leak-free when they are used under high temperature and high pressure conditions, it is necessary to conduct sampling tests on the seals for steam sealing performance. The standard detection method is the effusion method, and the detection device such as figure 1 Shown: [0003] The detection device is mainly composed of a steam generator 19, an autoclave 13, a pressure gauge (sensor) 5, a thermometer (sensor) 8, a detection sample 9, an auxiliary sealing ring 10, a leakage pipe 18 and a measuring cylinder. During detection, high-temperature and high-pressure steam enters the autoclave 13 from the steam g...

AI Technical Summary

Problems solved by technology

This test method seems to be feasible, but because the leakage of the seal is usually small, and the auxiliary sealing ring usually also leaks, and the steam adheres to the wall of the leakage pipe, the liquid in the measuring cylinder is basically not collected Or the collected effusion is very little, so the effusion method detection device cannot accurately measure the steam leakage of the seal, especially when there is a small leakage of the seal

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