Novel composite pipe compensator

Abstract

The invention discloses a novel composite pipe compensator and belongs to the technical field of heat distribution pipe compensation devices. The novel composite pipe compensator is characterized in that an outer sleeve seal head is arranged on an outer ring of a pipe A, a pipe B is coaxially and annularly sheathed on the outer ring at one end of the pipe A, a corrugated pipe is annularly sheathed on the surface of the outer ring of the pipe A, and the two ends of the corrugated pipe are respectively, tightly and fixedly connected with the pipe A and the pipe B; an outer sleeve is arranged on the outer side of a sealing seat to form a structure that the outer sleeve seal head which is integrally arranged on the outer ring of the pipe A and one end, including the corrugated pipe, of the outer pipe sleeve are of an integrated structure and can coaxially, synchronously and integrally move under the squeezing and pushing effect of axial thermal expansion force. By adopting the structure, the novel composite pipe compensator has the advantages that the pipe stress is reduced, the sealing performance is enhanced, the pressure bearing capacity is improved, large compensation can be realized and the application scope is wide.

Description

technical field [0001] The invention relates to a novel composite pipeline compensator, which belongs to the technical field of thermal pipeline compensation devices, and specifically belongs to the technical field of thermal pipeline compensation device structures used in industries such as petroleum, chemical industry, light industry, thermal power, and metallurgy. Background technique [0002] Common pipeline compensation methods in the prior art are as follows: 1. Traditional natural U-bend type, 2. Spherical compensator, 3. Sleeve compensator, 4. Corrugated compensator, 5. Rotary compensator. Among them: the cost of the spherical compensator is too high, while the performance of the domestically produced spherical compensator is average, and the pressure loss is large; the corrugated compensator has too much stress in the pipeline in practical application, and there is always a safety hazard in the pipeline operation; and the original Π-shaped compensator is used. The i...

AI Technical Summary

Problems solved by technology

Among them: the cost of the spherical compensator is too high, while the performance of the domestically produced spherical compensator is average, and the pressure loss is large; the corrugated compensator has too much stress in the pipeline in practical application, and there is always a safety hazard in the pipeline operation; and the original Π-shaped compensator is used. The investment and pressure loss of the natural compensation method are the same; the structure and sealing performance of the existing sleeve compensator are not good, the leakage phenomenon is common, and the anti-corrosion link is also relatively weak; the performance of the rotary compensator is better; Large, flexible layout, especially in long-distance overhead pipelines, the application advantages are obvious; but there are also shortcomings: First, the gap between the joint part of the inner pipe and the reducing pipe is too large, and there will be problems in this part during the movement of the fluid medium. Vortex, which increases the pressure loss of the fluid medium

Second, because the structure of the rotary compensator is a radial working principle, it must occupy a certain space when it is applied in the pipeline; and each set of compensator installation points must be equipped with a drain valve; this increases the cost and pressure loss of the pipeline network; Especially in buried pipelines, it cannot be widely used; especially, the existing spherical compensators, sleeve compensators, corrugated compensators, and rotary compensators all adopt a single sealing form. In terms of use: fluid medium and pressure bearing capacity are subject to certain limitations

Images