Pipeline impacting resisting protection device

Abstract

The invention discloses a pipeline impacting resisting protection device. A first annular guide groove, a second annular guide groove, a third annular guide groove are arranged on the inner wall of anenergy absorber shell. Guide bosses are arranged on the peripheral face of an energy absorber lower pressure plate, the peripheral face of an action disc and the peripheral face of an energy absorberupper pressure plate. The guide boss on the energy absorber lower pressure plate is embedded in the first guide groove, the guide boss on the action disc is embedded in the second guide groove, and the guide boss on the energy absorber lower pressure plate is embedded in the third guide groove. The end of a connecting rod sequentially penetrates through an energy absorber lower connecting plate,the energy absorber upper pressure plate, an upper energy absorption block, the action disc and a locking disc. The connecting rod is connected with the action disc and the locking disc, an energy absorber upper connecting plate is connected with the upper end of the energy absorber shell, and the energy absorber lower connecting plate is connected with the lower end of the energy absorber shell.The device has the advantages that active energy consumption is achieved, protection force is constant, and pipeline impacting dynamic stress can be reduced effectively.

Description

technical field [0001] The invention relates to a protection device, in particular to a protection device against pipeline impact. Background technique [0002] Pipeline is a transportation system that connects two or more equipment to transport media, and is widely used in thermal power plants, nuclear power plants, petrochemical and other energy industries. Due to the needs of operation, the opening and closing of the valves in the piping system are often adjusted during the production process, which will bring about a large impact and vibration of the pipeline, and when the operation is not correct, it will also cause the phenomenon of steam hammer and water hammer. The impact of pipeline vibration and the expansion wave and compression wave brought by steam hammer and water hammer are transmitted in the pipeline, and impact displacement will occur at elbows and valves. When the impact energy is large, it is easy to cause accidents such as pipeline cracking and medium lea...

AI Technical Summary

Problems solved by technology

This method cannot effectively absorb the impact energy of the pipeline, and the impact energy will be transmitted in the form of waves in the piping system, resulting in a wider range of impact and stronger destructive consequences

According to Newton's third law, under the constraints of a damper that is an approximate rigid body, the pipeline will be subjected to the reaction force of the damper, which will often cause the local dynamic stress to exceed the allowable stress of its material, resulting in cracking of the weld and deformation of the pipeline.

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