Built-in connector of bellows compensator

Abstract

The invention discloses built-in connector of a bellows compensator. The built-in connector comprises a left connecting pipe, a ring, a bellows, a major diameter bushing, a narrow diameter bushing, a filler, a movable flange and a right connecting pipe, wherein two ends of the bellows are bent to form a horizontal S-shaped elastic joint; the elastic joint is placed in the ring to be fixedly and integrally connected with the left connecting pipe and the right connecting pipe in a sleeving manner; the connecting structure adopts an elastic connecting structure, when the built-in connector is stressed, the elastic joint has a certain buffer function, and particularly a circular structure enables cutting force to be converted into axial force, so that the destructiveness to the butt joints is reduced; the movable flange sleeves the outer wall of the right connecting pipe in the structure, the narrow diameter bushing and the major diameter bushing which are respectively and fixedly connected with the inner wall of the left connecting pipe and the inner wall of the right connecting pipe are in sleeving combination so as to form a cavity allowing the filler to be placed. According to the built-in connector disclosed by the invention, the elastic connection is simple in structure, can buffer stress and can convert the cutting force born by the bellows and the connecting pipes at two ends into the axial force, so that the cracking rate of the joint is reduced, and the service life of the bellows compensator is prolonged.

Description

technical field [0001] The invention relates to a pipeline safety device, in particular to a bellows compensator with a built-in connection structure. Background technique [0002] The bellows compensator is the most used safety device in the industrial pipeline network. In the project, the elastic deformation characteristics of the bellows are used to absorb or compensate the axial displacement caused by the physical changes of the distributed pipeline network, which mainly plays a role in ensuring the pipeline network. The role of safe operation. The main component in the bellows compensator is a bellows, and the thin-walled bellows is directly fixedly connected with the relatively thick-walled pipe sleeve. The connection structure in the prior art is a direct-connection structure, which is simple in process, easy to manufacture, and easy to produce. low cost. However, due to the thin wall thickness of the bellows, the degree of fusion of its fixed connection parts is sm...

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly aims at the shortage of connection strength difference between the two ends of the bellows and the left and right connecting pipes in the prior art, and proposes a built-in connection of the bellows compensator with simple structure, high connection strength and strong resistance to shear force

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