What pipes are used for metal bellows in coal mining enterprises, chemical enterprises and metallurgical enterprises? Please give a detailed answer. Thank you!

Bellows compensator and metal hose belong to the category of metal bellows and belong to a compensation element. Using the effective expansion and contraction deformation of bellows as its working body, it can absorb the dimensional changes of pipes, conduits and containers caused by thermal expansion and contraction, or compensate the axial, lateral and angular displacement of pipes, conduits and containers. It can also be used to reduce noise and vibration. It is widely used in modern coal mining enterprises, chemical enterprises and metallurgical enterprises.

Specific purpose

The compensator can compensate axial direction, transverse direction and angular direction, and has the characteristics of no thrust, simplified bearing design, corrosion resistance, high temperature resistance, noise elimination and vibration reduction. Especially suitable for hot air pipeline and flue gas pipeline.

principle of operation

Corrugated compensator is a compensation device which uses the effective expansion and deformation of elastic elements of corrugated compensator to absorb the dimensional changes of pipes, conduits or containers caused by thermal expansion and cold contraction, and belongs to compensation elements. It can absorb axial, lateral and angular displacement.

Installation and use requirements of compensator

1, compensator before installation should first check its model, specifications and pipeline configuration, must meet the design requirements.

2. For the compensator with inner sleeve, attention should be paid to make the direction of inner sleeve consistent with the direction of medium flow, and the hinge rotation plane of hinge compensator should be consistent with the displacement rotation plane.

3. Compensators requiring "cold fastening" and auxiliary parts for pre-deformation can only be removed after pipeline installation. 4. It is forbidden to adjust the installation tolerance of the pipeline by the method of corrugated compensator deformation, so as not to affect the normal function of the compensator, reduce the service life and increase the load of the pipeline, equipment and supporting parts.

5. During installation, welding slag is not allowed to splash on the surface of the wave shell, and the wave shell is not allowed to be damaged by other machinery.

6. After the pipeline system is installed, the yellow auxiliary positioning parts and fasteners used for installation and transportation on the corrugated compensator should be removed as soon as possible, and the limit device should be transferred to the designated position according to the design requirements, so that the pipeline system can be fully compensated under environmental conditions.

7. All moving parts of the compensator should not be blocked or restricted by external parts, and the normal operation of all moving parts should be guaranteed.

8. During the hydrostatic test, the secondary fixed pipe rack with compensator at the end of the pipeline should be reinforced to prevent the pipeline from moving or rotating. For the compensator used in gas medium and its connecting pipeline, it is necessary to pay attention to whether temporary support is needed when filling water. The content of 96 chloride ion in water cleaning solution for hydrostatic test shall not exceed 25PPM.

9. After the hydrostatic test, drain the accumulated water in the wave shell as soon as possible, and blow dry the inner surface of the wave shell quickly.

10, the insulating material in contact with the bellows of the compensator shall be chlorine-free.

Recommended: Hebei Ye Wei Bellows Manufacturing Co., Ltd., Baishun brand metal bellows compensator, nonmetal compensator and metal hose, a well-known brand in China market.