New Plastic Pipe Compensator

Abstract

The invention discloses a novel plastic pipeline compensator and belongs to the technical field of heat distribution pipeline compensation devices. A pipe A combination structure is formed by an external connection flange B, a pipe A, a sealing framework and a pipe A protruding outer ring, a pipe B combination structure is formed by an external connection flange A, a pipe B, a pipe B protruding outer ring, a core pipe, a core pipe protruding outer ring, a pulling and disengaging preventing limit ring and an outer casing pipe, and when being squeezed by axial heat expansion force, the pipe A combination structure and the pipe B combination structure can integrally move relative to each other axially, coaxially and synchronously through flexible deformation of a corrugated pipe. With the structure, the novel plastic pipeline compensator has the advantages of being high in coaxial precision, smaller in friction efficient, self torque and pressure loss, higher in bending resisting capability and loading capability, reliable in sealing, good in performance and convenient to maintain, the medium flowing direction is not limited, and pipeline operation is safer.

Description

technical field [0001] The invention relates to a novel plastic 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] The pipeline compensation method in the prior art mostly adopts the original natural compensation method, and the investment and pressure loss are large; the structure and sealing performance of the compensator are not good, the leakage phenomenon is serious, and the anti-corrosion link is also relatively weak; the performance of the rotary compensator is relatively poor. Excellent; it has a large amount of compensation and flexible layout, especially in long-distance overhead pipelines, and its application advantages are obvious; but there are also shortcomings: First, the gap between...

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Problems solved by technology

[0002] The pipeline compensation method in the prior art mostly adopts the original natural compensation method, and the investment and pressure loss are large; the structure and sealing performance of the compensator are not good, the leakage phenomenon is serious, and the anti-corrosion link is also relatively weak; the performance of the rotary compensator is relatively poor. Excellent; it has a large amount of compensation and flexible layout, especially in long-distance overhead pipelines, and its application advantages are obvious; but there are also shortcomings: First, the gap between the inner pipe and the reducing pipe is too large, and the fluid medium is in motion. A vortex will be generated in this part, which will increase 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 amount of extra space when it is applied in the pipeline; and each set of compensator installation points must be equipped with a steam trap; this increases the cost and pressure of the pipeline network. damage; and it cannot be widely used in buried pipelines; especially the existing spherical compensators, sleeve compensators, corrugated compensators, and rotary compensators all use a single sealing form. In use: fluid medium There are certain limitations in terms of pressure bearing capacity and other aspects

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