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2019.02.23

Corrugated metal compensator manufacturers introduce pressure test installation tips

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Corrugated metal compensator manufacturers take you to understand the corrugated metal compensator pressure test and installation:


1. Pressure test description of corrugated metal compensator:


1) During the hydraulic test of the system, the system pressure test shall be carried out according to the design requirements. The secondary fixed pipe frame equipped with corrugated metal compensator pipe ends should be reinforced so that the pipe does not move or rotate. Do not use the transport rod to withstand pressure test thrust. If the pipeline is tested in sections, the blind end of the section must be temporarily reinforced to avoid pushing and overturning. The experimental pressure should not exceed 1.5 times the operating pressure of expansion. For the compensator and its connecting pipeline used for gas medium, check whether temporary support is needed when the load is increased when filling water. The chloride ion content of water for hydraulic test and cleaning solution shall not exceed 25PPM.


2) After the hydraulic test, the water in the wave shell should be drained as soon as possible, and the inner surface of the wave shell should be quickly dried.


3) The insulation material in contact with the compensator bellows should not contain chloride ions.


2. Installation precautions and installation methods of corrugated metal compensator:


1) The metal compensator is a special pipeline element, the installation is complex and strict, the need to calculate the thrust of the pipeline and the force of the injection fixed bracket, so it can not be installed without authorization, or it will cause an accident. Therefore, the installation must have the pipeline construction drawings provided by the professional design department and the detailed configuration of the pipeline support. And refer to the compensator installation instructions.


2) The compensator with flow direction requirements should be installed according to the requirements of the medium flow direction arrow.


3) In order to make the bellows in good working condition, the deformation of the compensator cannot be used during installation, including axial, transverse, torsion, etc., to adjust the installation error of the pipe system position.


4) Before installation, remove foreign bodies in the bellows and pipes to ensure the normal movement of the bellows.


5) When buying, do not only rely on the model or code, to provide data to the metal compensator manufacturer, designed and produced by the metal compensator manufacturer, in order to ensure the service life or quality.


6) The bellows used in the compensator are formed with thin-wall stainless steel plate, so during transportation, hoisting and welding, pay attention to not knock, scratch, arc, welding splash and other reasons to damage the bellows.


7) Before the operation of the system, the small pull rod general metal compensator manufacturers do not recommend removal, but after the pressure is completed, according to the compensation amount of the inner nut.


8) The pipe to install the corrugated metal compensator must be properly guided and fixed in order to make the compensator play a role, so the setting of the guide and fixed bracket must be strictly in accordance with the relevant technical data of the design department.


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