double hinged expansion joint

Hinged corrugated pipe expansion joints are mainly used in various complex pipe systems to compensate angular displacement of pipe systems, such as L pipe, Z pipe and U pipe.It is widely used in petroleum, chemical industry, steel, metallurgy, machinery, transportation, shipping, dock, construction, rubber, papermaking, textile, electric power thermal network, pharmaceutical, medical and other industries.

The characteristics of

Hinged corrugated expansion joints absorb angular displacement caused by thermal expansion or contraction in the axial direction of pipelines, conveyors, or containers by changing their angles.Usually two or three combination, the amount of compensation is proportional to the distance between the two product, its advantage is small size, light weight, thrust pressure by products hinge component, angular hinge corrugated compensator can compensate the line in any direction of the angular displacement.

The installation

1. Before installation, the hinged ripple compensator should check its model, specification and pipeline configuration, which must meet the design requirements.

2. For the compensator with the inner sleeve, it should be noted that the direction of the inner sleeve cylinder should be consistent with the flow direction of the medium, and the hinge rotation plane of the hinge type compensator should be consistent with the displacement rotation plane.

3. If the "cold and tight" compensator is needed, the auxiliary components used for the pre-deformation shall be removed after the installation of the pipeline is completed.

4, it is forbidden to use corrugated compensator deformation method to adjust the pipeline installation error, so as not to affect the normal function of the compensator, reduce the service life of the components and piping, equipment, supporting the load.

5. During installation, welding slag shall not be allowed to splash onto the surface of the wave shell, and other mechanical damage shall not be allowed to the wave shell.

6, piping installation has been completed, should be removed as soon as possible on the corrugated compensator is used as the installation of transport yellow auxiliary positioning components and fasteners, and switch to a specified position limit device according to design requirements, make the piping have ample compensation ability under the environmental conditions.

7. All active components of the compensator shall not be stuck or restricted by external components, and the normal operation of each active part shall be ensured.

8. During water pressure test, the secondary fixed pipe frame equipped with the compensator pipe end shall be strengthened to prevent the pipeline from moving or rotating.For the compensator used for gas media and its connecting pipeline, it is necessary to pay attention to whether temporary support is needed when filling water.The content of 96 chlorine ions in water cleaning solution for water pressure test shall not exceed 25PPM.

9. After the water pressure test, the water in the wave shell should be drained as soon as possible and the inner surface of the wave shell should be blown dry quickly.

10. The insulation material in contact with the bellows of the compensator shall not contain chlorine.