Straight pipe outer pressure balance type ripple compensator

Abstract

The invention discloses a straight pipe outer pressure balance type ripple compensator. The straight pipe outer pressure balance type ripple compensator comprises an inner pipe, an outer pipe, a big corrugated pipe, a connecting pipe, a jacket pipe, a flow guide pipe and a small corrugated pipe, wherein the jacket pipe covers the small corrugated pipe on the left side; the left end of the jacket pipe is fixedly connected with the small corrugated pipe on the left side through the connecting pipe; the right end of the jacket pipe is fixedly connected with a flange of the inner pipe on the right side; the jacket pipe connected in a staggered way forms two small corrugated pipe linkage compensation structures; the big corrugated pipe covers the jacket pipe; the right end of the big corrugated pipe is fixedly connected with the jacket pipe through the connecting pipe; the outer pipe directly covers the big corrugated pipe and the small corrugated pipe on the right side; the big-diameter end of the outer pipe is hermetically connected with the outer wall of the inner pipe on the left side; the small-diameter end of the outer pipe is in clearance fit with the outer wall of the inner pipe on the right side; the outer pipe connected in a staggered way forms a linkage balancing structure which takes the big corrugated pipe as an elastic component. The straight pipe outer pressure balance type ripple compensator adopts a multi-layer sleeving structure; the axial size is shortened; the bracket size is reduced; most importantly, the flexibility of axial compensation is maintained; the safety performance is further enhanced.

Description

technical field

[0001] The invention relates to a pipeline safety device, in particular to a bellows compensator for straight pipe external pressure balance. Background technique

[0002] The industrial heat pipe network and urban heating pipe network have a wide range of structures and long pipes. During the operation of the criss-cross pipe network, the temperature and pressure of the built-in medium or the ambient temperature change, resulting in corresponding deformation. The main manifestations of pipeline deformation are destructive axial thrust and displacement. For the safety of the pipeline network, pipeline compensators are usually installed at the relevant nodes of the pipeline in engineering. The bellows compensator is the most widely used, which uses its flexible structure to absorb or compensate the axial thrust and displacement in the pipeline. The traditional bellows compensation structure is simple, and the compensation action is flexible, which can meet t...

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