Device for detecting leak rate of sealing ring

Abstract

The invention discloses a device for detecting the leak rate of a sealing ring. The device for detecting the leak rate of the sealing ring comprises a ring flange, a flange which is connected with the ring flange in a sealing way, and an inner sealing groove and an outer sealing groove which are arranged between the ring flange and a flange cover, wherein a sealing ring to be detected is arranged in the inner sealing groove, and a standard sealing ring is arranged in the outer sealing groove; an annular leak detection groove and a gas cavity are arranged at a contact part of the ring flange and the flange cover, and the annular leak detection groove is arranged between the outer sealing groove and the inner sealing groove and is communicated with an external leak detection pipe without leakage; and the gas cavity is arranged at the center of the flange and is communicated with a cylinder arranged outside the flange without leakage. The device has the advantages of compact structure, small volume, and convenience and quickness in heating, and the problem that the traditional detection device is difficultly applied to the detection of the leak rate of the sealing ring in high-pressure and high-temperature environments can be solved.

Description

technical field [0001] The invention relates to a leakage rate detection device for a sealing ring, in particular to an airtightness device capable of detecting the leakage rate of an O-shaped rubber ring at a temperature range of 0-300°C and a pressure of 0-2.5 MPa. Background technique [0002] The rubber sealing ring has a simple structure and reliable sealing effect and is widely used. Since it is impossible for the seal to achieve zero leakage, the leak rate is an important indicator in the design of the sealing device. The material of the sealing ring is different, and the environment to be adapted is also different. Temperature and pressure difference on both sides of the sealing ring are the main environmental factors affecting the sealing effect. There are many special environments in practical applications, such as the sealing of the spacecraft working cabin, the working pressure difference of the sealing ring is one atmosphere and it is in a high-temperature com...

AI Technical Summary

Problems solved by technology

[0004] The present invention designs a leak detection device for sealing rings. A leak detection tank connected to an external leak detection pipe and a gas chamber that can be filled with high pressure are arranged in the sealing flange, and the flange can be placed in a water bath or an oil bath. The overall heating solves the problem that the existing detection device is difficult to apply to the detection of the leakage rate of the sealing ring in the high pressure and high temperature environment

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