Air tightness detection method of seal ring and detection device thereof

Abstract

The present invention discloses an air tightness detection method of a seal ring and a detection device thereof. The air tightness detection device provided by the invention comprises a leak detecting device, consisting of a first cavity, a top fastening flange and a bottom fastening flange; a simulation installation device arranged in the first cavity, consisting of a tank, a mounting flange communicated with the tank, a first inflation inlet communicated with the tank and a barometer communicated with the tank; a vacuum device, consisting of a second cavity, a second inflation inlet communicated with the second cavity and a density sensor communicated with the second cavity; and a gas connecting pipe arranged between the leak detecting device and the vacuum device, and a solenoid valve is connected on the gas connecting pipe. The present invention further discloses an air tightness detection method of the seal ring. According to the air tightness detection method of the seal ring and the detection device thereof, the quantitative determination of the air tightness of the seal ring may be performed, and the self-detecting and the alarm of the detection process are realized so that the detection accuracy rate is improved, the structure is simplified, the operation is convenient, and the cost is easy to be controlled.

Description

technical field [0001] The invention relates to the field of air tightness detection, in particular to an air tightness detection method and device for a sealing ring. Background technique [0002] In the prior art, the sealing ring is usually based on the extrusion-type sealing principle. Specifically, for example: after the elastic deformation of the extruded sealing ring, a contact pressure is generated on the sealing contact surface. If the contact pressure is greater than the internal pressure of the sealed medium, no leakage will occur, otherwise, leakage will occur. [0003] It is an effective means to study the basic performance of the sealing ring to test the air tightness of the sealing ring. Through the inspection of the airtightness of the sealing ring after the aging test, combined with the research on the aging test of the sealing ring, the direct law of the service life and air leakage of the sealing ring can be obtained; Inspection can detect its performanc...

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Problems solved by technology

[0004] At this stage, the airtightness test of the sealing ring is often carried out by using a leak detector. The results can only qualitatively reflect whether the air leaks or not, and cannot quantitatively characterize the air leakage rate, and cannot obtain the key points such as the annual air leakage rate. performance indicators, and quantitative detection is a very important link in the performance test of sealing rings; at the same time, the existing test methods cannot realize self-judgment and alarm functions, and cannot realize the transmission of data and host computer

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