Mechanically-sealed metal corrugated pipe compensation assembly

Abstract

The invention discloses a mechanically-sealed metal corrugated pipe compensation assembly. The mechanically-sealed metal corrugated pipe compensation assembly consists of a friction ring, a friction ring base, a metal corrugated pipe and a tail base, and is characterized in that an inner seam allowance table is arranged at the left end of the friction ring base; an outer seam allowance table is arranged at the right end of the friction ring; the friction ring is matched with the friction ring base through the seam allowance tables; and the inner seam allowance table of the friction ring base is fixedly connected with the outer circular surface of the friction ring in an interference embedding manner. The mechanically-sealed metal corrugated pipe compensation assembly is particularly suitable for high-temperature oil working conditions that the pressure P is smaller than or equal to 4.0 Mpa, the temperature T is larger than 176 DEG C and smaller than or equal to 400 DEG C, and the rotating speed is smaller than or equal to 5000 rpm, it is guaranteed that the leakage rate of the seal end face reaches the standard, and the service life is prolonged.

Description

technical field [0001] The invention relates to a mechanical seal device, in particular to a welded metal bellows compensating assembly of the mechanical seal device. Background technique [0002] The mechanical seal device is composed of a moving ring assembly and a static ring assembly. There are two forms of split ring compensation and static ring compensation. The compensation methods are divided into spring compensation and metal bellows compensation. [0003] The metal bellows compensation assembly of the mechanical seal is composed of a friction ring, a friction ring seat, a metal bellows, and a tailstock; the left and right ends of the metal bellows are respectively welded to the friction ring seat and the tailstock, and the friction ring and the friction ring seat are internally stopped. Groove interference fit fixed connection. [0004] In the above prior art, the friction ring 1 is made of graphite, and the friction ring seat 2 is made of corrosion-resistant allo...

AI Technical Summary

Problems solved by technology

Due to the difference in linear thermal expansion between the outer circle and the inner circle of the friction ring seat 2, the friction ring seat 2 and the friction ring 1 are in a bell mouth characteristic state, so that the friction end surface of the friction ring presents a V gap, even if the dynamic friction ring and the static friction ring The friction fit end face of the seal surface presents a V gap, which destroys the mutual parallel fit relationship, makes the stability of the seal end face fit worse, and the leakage increases

Images