Plunger type multifunctional pipeline compensator

Abstract

The invention discloses a plunger type multifunctional pipeline compensator, which belongs to the technical field of heat distribution pipeline compensation devices. A fixed sealing press cover flange and a reducing connection pipe are adopted. An outer sleeve assembly with an outer sleeve inner bearing platform, a plunger inner pipe framework and a plunger inner pipe is integrally sleeved at one end of a core pipe assembly with a plunger outer pipe framework, a plunger outer pipe, a core pipe convex outer ring and a sealing part A. A steel ball and a sealing part are used for straightening. When one end is extruded and pushed by axial thermal expansion force, the core pipe assembly and the outer sleeve assembly can synchronously, integrally and relatively move in coaxial mode. By means of the structure, stress of pipelines is reduced, sealing performance is enhanced, bearing capacity is improved, the effect of corrosion resistance is provided, and the purpose of large compensation amount and wide application scope can be achieved.

Description

technical field [0001] The invention relates to a plunger-type multifunctional 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, and the performance of the domestically produced spherical compensator is average, and the pressure loss is relatively large; the corrugated compensator has too much stress in the pipeline in actual application, and there is always a safety hazard in the pipeline operation; and the original II-shaped compens...

AI Technical Summary

Problems solved by technology

Among them: the cost of the spherical compensator is too high, and the performance of the domestically produced spherical compensator is average, and the pressure loss is relatively large; the corrugated compensator has too much stress in the pipeline in actual application, and there is always a safety hazard in the pipeline operation; and the original II-shaped compensator is used The investment and pressure loss of the natural compensation method are the same; the structure and sealing performance of the sleeve compensator are not good, the leakage phenomenon is serious, and the anti-corrosion link is also weak; the performance of the rotary compensator is better; it has a large amount of compensation, Flexible layout, especially in long-distance overhead pipelines, has obvious advantages; but there are also shortcomings: First, the gap between the joint part of the inner pipe and the reducing pipe is too large, and eddy currents will be generated at this part during the movement of the fluid medium. This 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 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 spherical compensators, sleeve compensators, corrugated compensators, and rotary compensators all adopt a single sealing form. In use: fluid medium and bearing Pressure capacity and other aspects are subject to certain limitations

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