The utility model discloses a pipe expansion device, which is a connecting piece which is compensated by the size change caused by thermal expansion and cold contraction in the pipe connection. There are two kinds of pipe expander, one is rubber pipe telescopic device, and the other is metal pipe telescopic device. Small size, light weight, good elasticity, easy installation and maintenance. Here we will introduce: pipe telescopic installation methods and installation notes.
Installation method of pipe expansion device:
The utility model relates to a pipe expander, which can be mainly used for loose connection of hardware pipes.
The pipe expander mainly connects all the bolts to make it a whole, and it has a certain displacement, and also can bear the axial pressure of the pipeline. The installation of the product, we must first pay attention to the following points:
1. Before installing, the pipe expander shall check its type, specification and piping configuration, and must comply with the design requirements.
2, the expansion of the inner sleeve should be noted that the direction of the inner sleeve is consistent with the direction of the medium flow. The hinge rotation plane of the hinge type telescopic device should be consistent with the displacement rotation plane.
3, the need for “ cold tight ” expansion device, pre deformation of the auxiliary components should be installed in the pipeline before they can be removed.
4, it is strictly prohibited to use telescopic deformation method to adjust the installation of the pipe, so as not to affect the normal function of the telescopic device, reduce the service life and increase the piping, equipment and supporting components of the load.
5 、 during the installation of the pipe expander, welding slag is not allowed to splash to the surface of the wave shell, and the wave shell is not allowed to suffer other mechanical damage.
6, pipeline expansion device after the piping installation, should also be removed as quickly as possible wave expansion device used as transportation and installation of yellow auxiliary positioning components and fasteners, and according to the design requirements will be transferred to the specified position limiting device, the pipe system has the ability to compensate fully in the environmental conditions.
Precautions for installation of pipe expander:
1. pipeline expansion device should be installed in accordance with piping drawings and pipeline expansion device installation instructions requested to stop.
2., the installation of pipe telescopic pipe must be appropriate to guide and fixed, so that the expansion device to carry forward the function, and therefore the guidance and fixed support hanger set must be strictly according to the design part, related skills, materials stop. For guidelines on the setting of the guide and mounting bracket, see the &ldquo for the bellows contraction section, ”.
The 3. section of the corrugated tube type shrinkage of thin-wall stainless steel plate forming, and thus in the transportation, hoisting and welding period should be careful not to knock, scratch, arc, welding spatter using bellows failure reason.
4 before installation, should clear bellows and pipe external foreign body, ensure bellows normal operation.
5. the contraction section with flow direction shall be stopped at the request of the medium flow arrow.
6., in order to make the bellows in the superior task shape, when the device can not use contraction section deformation, including axial, transverse, change and other deformation to adjust the pipe position, device error.
The editor summarizes the installation method of the pipe expander and the installation notes, and introduces it here. Hope to help you, more information, please pay attention to the Qijia network.
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