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Installation Precautions for Non-Metallic Compensators
Release time:
Dec 28,2020
1. Before installing the non-metallic expansion joint, first check its model, specifications, and pipeline configuration to ensure they meet the design requirements. 2. For expansion joints equipped with an inner sleeve, make sure the direction of the inner sleeve is consistent with the flow direction of the medium. For hinged expansion joints, the hinge’s rotation plane should align with the displacement’s rotation plane. 3. For expansion joints requiring cold tightening, the auxiliary components used for pre-deformation may be removed only after the piping system has been fully installed.
1. During installation Non-metallic compensator Beforehand, check its model, specifications, and piping configuration to ensure they meet the design requirements.
2. Compensators equipped with an inner sleeve shall ensure that the direction of the inner sleeve is consistent with the flow direction of the medium. For hinged compensators, the hinge’s plane of rotation shall align with the plane of displacement rotation.
3. For compensators requiring cold tightening, the auxiliary components used for pre-deformation may be removed only after the piping system has been fully installed.
4. It is strictly prohibited to use the deformation of non-metallic expansion joints to compensate for installation errors in pipelines, as this may impair the normal function of the expansion joint, shorten its service life, and increase the load on the pipeline system, equipment, and supporting components.
5. During installation Non-metallic compensator At this time, welding spatter is not allowed to splash onto the surface of the bellows, and the bellows must not be subjected to any other mechanical damage.
6. After the piping system has been installed, remove the auxiliary positioning components and fasteners used during installation and transportation. Adjust the limit devices to their designated positions according to the design, ensuring that the piping system has sufficient compensation capability under ambient conditions.
7. Ensure that all moving parts of the non-metallic compensator operate smoothly and without obstruction; no moving components should be jammed or restricted in their range of motion by external parts.
8. During the hydrostatic test, reinforce the secondary fixed pipe supports at the ends of pipelines equipped with non-metallic expansion joints. For expansion joints and their connecting pipelines used in gaseous media, pay attention during water filling to whether additional temporary supports are required. The chloride ion content in the cleaning solution used for the hydrostatic test shall not exceed 25 ppm.
9. After the hydrostatic test is completed, drain the water from the wave shell as soon as possible and promptly dry the inner surface of the wave shell.
10. With Non-metallic compensator The insulating materials in contact should not contain chlorine.
Packaging and Transportation Requirements for Non-metallic Compensators:
1. Non-metallic compensator Appropriate protection should be provided to prevent damage during transportation and installation.
2. During transportation, the non-metallic compensator must be securely placed and separated from other components using spacers or similar supports to prevent the metal parts from scratching the sealing ring.
3. Non-metallic expansion joints supplied by manufacturers typically come with a certificate of conformity and installation instructions.
4. Other packaging and transportation requirements for non-metallic expansion joints shall refer to the relevant provisions in JB/T 4711-2003.
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