What is the pipe expansion joint assembly specification?
The pipe expansion joint is a compensating joint mainly used for metal pipes. When the product is used in the pipe, it mainly ensures the safe operation of the pipe. In fact, every family has used this, but few people know what the main function of the pipe expansion joint, what are the features and installation precautions and so on. Today, Xiao Bian will give you an introduction to the relevant content of the Pipeline Expansion Section . I hope to help you.
What is a pipe expansion joint?
Pipe expansion joints, also known as pipe retractors, pipe expansion joints. Pipe expansion joints are new products that connect pumps, valves, pipes, etc., to equipment deployment and pipeline connection. They are connected by a bolt and they have a certain amount of displacement, so that they can be installed on site and repaired. The dimensions are tested and the axial thrust can be transmitted to the entire piping system during operation. This will not only improve work efficiency, but also protect pipelines such as pumps and valves.
Pipe expansion joint classification
BF single flange limited expansion joint, AY gland expansion joint, B2F double flange limited expansion joint, AF flange loose joint, CF single flange transmission joint, BY gland Limiting expansion joints, C2F double flange transmission joints, CC2F detachable double flange transmission joints and so on.
Pipe expansion joint installation specification
Pipe expansion joints are mainly used in hardware pipelines. Long-distance pipelines provide greater convenience for expansion and contraction caused by temperature differences. This product is often used in valves, fire protection, chemical engineering, etc. due to its good overall performance. In the pipeline system, when the pipeline expansion joint is installed, the following points must be noted first:
1. Pipeline shrinkage should be checked before installation. Its model, specifications and piping configuration must meet the design requirements.
2. The retractor with inner sleeve should pay attention so that the direction of the inner sleeve is the same as that of the medium, and the hinge plane of the hinge-type retractor should be consistent with the displacement plane.
3. The “cold tight†retractor is required. The auxiliary components used for the pre-deformation should be removed after the pipe is installed.
4. It is forbidden to use the method of deformation of the retractor to adjust the installation of the pipeline so as not to affect the normal function of the retractor, reduce the service life, and increase the load of piping, equipment and support members.
5. In the installation process of the pipeline expansion joint, welding slag is not allowed to splash on the surface of the wave shell, and the wave shell is not allowed to be subjected to other mechanical damage.
6. Pipe expansion joints After installation of the pipe system is completed, the yellow auxiliary positioning components and fasteners used for installation and transportation on the wave retractor should be removed as soon as possible, and the limit device should be adjusted to the specified position according to the design requirements, so that the pipe system Under the environmental conditions there is sufficient compensation ability.
7. All moving elements of the pipeline expansion joint must not be stuck or restricted by the external components, and the normal movement of each active part should be ensured.
8. In the hydrostatic test, the secondary fixed pipe rack equipped with the end of the retractable pipe line should be reinforced so that the pipeline does not move or rotate. For retractors and their connecting pipes for gas media, pay attention to whether or not additional temporary brackets are required during water filling. The 96 chloride ion content of the hydrostatic test water washing solution does not exceed 25 PPM.
The above is an introduction to the related contents of the Pipe Expansion Joint. I hope to help you. For more information on the pipeline, please continue to pay attention to this site information.
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The Concave Grating has the advantage of being able to constitute a spectroscopic system without any assistance from concave mirrors or similar types of image-forming elements. For this reason,the Concave Grating is used in a wide range of applications, such as analytical instruments,optical communications,biotechnology,and medical instruments. Spectroscopes incorporating concave gratings are classified roughly into two groups: polychromators or monochromators.
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