A sealing device for leak detection of special elbow airtightness

Abstract

The invention relates to a sealing device for detecting the airtightness of a special elbow. The sealing device comprises a sealing plate, a U-shaped ring and a plurality of insertion plates. The outer ring of the U-shaped ring is in close fit with the first groove wall in the elbow. The sealing plate is inserted into the U-shaped ring. The outer ring of the sealing plate is in close fit with the inner ring of the U-shaped ring. A protruding circle is disposed on the periphery of the bottom of the lateral side of the sealing plate. The upper end face of the protruding circle is in close fit with the lower end of the U-shaped ring. The insertion plates which are peripherally evenly distributed are connected to the lower end face of the sealing plate. The contour of outer lateral side of each insertion plate is consistent with that of the second groove wall in the elbow. When the sealing device is used, the sealing plate is placed into the hole of the elbow, the position of each insertion plate is adjusted to allow the outer lateral side of the insertion plate to fit with the corresponding second groove wall in the elbow, air is fed into the inner cavity of the elbow when the other end of the elbow is compressed, the sealing plate and the U-shaped ring are compressed under pressure, and sealing is achieved. In addition, the sealing device is simple in structure and practical and convenient.

Description

technical field [0001] The invention relates to the field of airtightness leak detection of parts, in particular to a sealing device for leak detection of the airtightness of special bent pipes. Background technique [0002] In daily life, pressure pipes are closely related to us. The leakage of these parts directly affects our production and life. Therefore, for these parts that are under a certain working pressure, they need to be leak-tight after processing. The key link in leak detection is sealing. The failure of the seal is often not due to insufficient strength of the connecting piece, but in most cases it is caused by insufficient sealing. For general elbow nozzles, refer to Figure 5 As shown in the first nozzle 6, the sealing method adopted is the strong side seal, that is, there will be a place that can be compressed at the elbow mouth, and a special sealing plate can be made, and a sealing ring or a sealing gasket can be used. , and then tightened by installing ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a sealing device for leak detection of the airtightness of special elbows to solve the above-mentioned Problems Existing in Existing Techniques for Airtight Leakage Detection of Special Elbows

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