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Compressive strength and tensile strength of flange type expansion joints

Flange loose sleeve Expansion joint In the pipeline operation, there is a certain multi-directional displacement, which plays an important role in expansion compensation due to heat expansion, cold contraction, crustal subsidence and stress. Therefore, the expansion joint can relieve the blind plate thrust in the pipeline operation, play a certain role in protecting the pipeline, especially providing great convenience for the installation and maintenance of the pipeline. However, at the pump outlet and pipe corner, the sliding pipe connection without fixed pier, infinite pier and directional limit pier support should be adopted Force transfer joint And limit force transmission joint, or use limit Telescopic device (expansion joint) and anti pull off limit Rubber joint In addition, the limited expansion joint and clamp flexible joint can be used, because the force transfer joint can transmit the thrust of blind plate when starting the pump to all parts of the pump and pipeline through the force transmission bolt (i.e. full wire bolt), so as to avoid the thrust concentrated on the corner of the pipeline or the near end of the pump, which may damage the equipment by impact force.

    In fact, in the use of various pipelines, expansion joint, force transfer joint, expansion joint (expansion joint), rubber joint, clamp flexible joint (flexible clamp joint for short, clamp joint) and quick joint all have a common function in pipeline connection, which plays an expansion and displacement compensation role for the operation of the pipeline. Because they have this common feature in the pipeline connection, they are in the pipeline It can only be used as a substitute for a certain type of pipe fittings. Most of the design units and installation engineering companies choose the above type of pipe joint reasonably according to the location of the pipeline connection, whether the connection is between the sliding pipeline, the pipeline corner and the water pump valve, whether there are fixed buttresses, infinite buttresses and directional limit buttress supports in the pipeline.

Shanghai Huanjing is mainly engaged in expansion joint, loose sleeve expansion joint, flange loose sleeve expansion joint and other expansion joints. The flange type loose sleeve expansion joint has a certain multi-directional displacement in the pipeline operation, which has an important expansion compensation effect on the pipeline due to heat expansion and cold contraction, crustal subsidence and stress. Therefore, the expansion joint can relieve the blind plate thrust in the pipeline operation, play a certain protective role on the pipeline, especially provide great convenience for the installation and maintenance of the pipeline.

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