Static seal structure of dish-shaped ring

Abstract

The invention relates to a static seal structure of a dish-shaped ring. The static seal structure of the dish-shaped ring comprises a first metal part, a second metal part, a dish-shaped ring body and a fastening piece; an inner step, a convex seal step and a convex limit step are mounted on the first metal part in sequence from the center to the periphery; an outer step, a concave seal step and a concave limit step are mounted on the second metal part in sequence from the center to the periphery; the inner step is matched with the outer step; the seal surface of the convex seal step is matched with the seal surface of the concave seal step; the convex limit step is matched with the concave limit step; the dish-shaped ring body is located between the seal surface of the convex seal step and the seal surface of the concave seal step; the fastening piece applies axial force through the convex limit step and the concave limit step. The static seal structure of dish-shaped ring solves the technical problems that the existing static seal realized through welding under ultimate temperature is high in cost and is bad in operability; the static seal structure of dish-shaped ring provides the static seal proposal under ultimate temperature, the structure is simple, the cost is low, and the operation is finished conveniently.

Description

technical field [0001] The invention relates to a static sealing structure, especially a static sealing structure under ultra-high temperature or ultra-low temperature conditions. Background technique [0002] Static sealing under extreme temperature conditions is an important research and development topic. Under high temperature or low temperature conditions, ordinary rubber O-rings or PTFE retaining rings will melt and deform to a certain extent or crack at low temperatures, resulting in seal failure, which requires a new low-temperature resistant sealing structure. At present, the static seal under extreme temperature conditions is usually a welded structure, but the welded structure has high requirements on the quality of the weld, and it is necessary to pass pressure tests, X-ray inspections, fluorescent inspections, etc. to ensure the strength and tightness of the welds under the required conditions, and the cost is relatively high. , the operability is poor, and the...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the existing technical problems of high cost and poor operability in achieving static sealing by welding under extreme temperature conditions, the present invention provides a dish-shaped ring static sealing structure, a static sealing solution under extreme temperature conditions, and Simple structure, low cost, easy operation

Images