Precise type compound pipeline compensator

Abstract

The invention discloses a precise type compound pipeline compensator and belongs to the technical field of heating pipeline compensating devices. The precise type compound pipeline compensator comprises an inner pipe and an inner pipe protruding outer ring which are fixed into a whole and a reducing connecting pipe, a core pipe, an outer casing pipe, a sealing part A pressing cover, a sealing part B compressing flange, a sealing part B framework, a sealing part A and a sealing part B which are fixed into a whole. When the compensator is squeezed due to axial thermal expansion force, the two fixing bodies can move relative to a shaft synchronously along the axial direction. The precise type compound pipeline compensator has the advantages of being high in accuracy, small in friction coefficient, self-torque and press loss, enabling medium flowing to be not limited and being sealed and reliable, good in performance, safe in pipeline operation and convenient to maintain.

Description

technical field [0001] The invention relates to a precision compound 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 be...

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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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