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Function and Selection of PTFE Compensator

July 25, 2022

Compensator acts on: 1. Compensation for the axial, transverse and angular deformation of the absorption pipeline. 2. The expansion capacity of the corrugated compensator can facilitate the installation and disassembly of the valve pipe. 3. Absorb equipment vibration to reduce the impact of equipment vibration on the pipeline. 4. Absorb the deformation of earthquake and sinaginations to the pipeline.

Selection skills: The compensator adopts rectangular section, circular angle waveform, and a single expansion section in the pipe bears two-dimensional direction displacement. The elbow control tunnel composed of 2 expansion joints can withstand three-dimensional direction displacement. Rectangular rounded angle metal corrugated expansion section has a full height, semi-height type, according to the flue size, stress and strain requirements, users can choose multiple wave section.

1. After the user selects a suitable Pipe Compensator according to the thermal displacement of the pipe system, it should at least provide the circulation medium in the pipe, the design pressure of the flue, the highest temperature during operation, the selected waveform (216mm, half height 108mm) and the waveform (not exceeding 6 waves) of the flue cross-section size (length and width) for the structural design and manufacture of the Pipe Compensator.

2. Maximum allowable expansion per wave: full high type △ = ± 24mm semi-high type △ = ± 12mm.

3. Grey panel: the air duct or the less dust pipe can not be used, and the dust panel should be used for the dusty flue.

4. In order to reduce the number of bellows, cold pull 50% should be considered.

5. The PTFE Compensator is suitable for the occasions where the section area is less than 4.6 square meters, and one side of the flue duct is less than 1.5m but more than 0.6mm. Standard full-high corrugated PTFE Compensator for all flue channels.

Selection; as it is quite complicated, But any complex tube line can choose several fixed brackets in different parts to choose different settings, Divide it into relatively simple, individual tube segments, "Z" and "" segments, And determine the deformation and compensation amount of each pipe section respectively, Due to the many kinds of compensators, Proper type selection is very important, Therefore, in the overall design of the tube system, With full consideration to the direction of the pipeline and the support system (including fixed pipe frame, guide sliding pipe frame, etc.), the design and comprehensively considering the shape and configuration of the compensator, To show the best combination of safe, reasonable, applicable and economic. The bellows compensator is a flexible element with the bellows as the core, and then in the pipeline for the axial, transverse and angular three-direction compensation. Axial-type compensator aims to reduce the self-excitation phenomenon of the media. There is no inner casing in the product, which largely limits the radial compensation capacity, so generally only used to absorb or compensate for the axial displacement (if a small amount of radial displacement in the pipe line, the maximum displacement can be ordered): lateral displacement Rubber Compensator (large rod) mainly absorbs lateral displacement perpendicular to the compensator axis of the pipe, small rod lateral displacement compensator is suitable for absorbing lateral displacement, can also absorb the combination of axial, angular and any three direction displacement: hinge compensator (also called angular compensator). It is used with two or three supporting compensators (a single use hinge compensator has no compensation capacity), which is used to absorb the lateral deformation in the one-way plane, and the universal hinge (angular) compensator, used by two or three supporting devices, can absorb the amount of three-dimensional direction deformation.

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Author:

Mr. Zheng

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8615888074637

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