An anti-hammer device with a flexible sealing structure for water supply pipelines

Abstract

The invention relates to the technical field of water hammer effect suppression, and is an anti-hammer device with a flexible sealing structure for water supply pipelines. Connected inlet section, transition section and outlet section, the inlet section and the outlet section are horizontal, the transition section is vertical, the first venturi tube is arranged on the inlet section, the side wall of the outlet section is connected to the pressure relief assembly, and the pressure relief assembly is connected to the discharge pipe, The other end of the discharge pipe is connected to the negative pressure tank, and the negative pressure tank is also connected to the first venturi tube. One end of the thrust reverser assembly extends into the transition section, and the other end extends into the discharge pipe; the pressure relief assembly detects the pressure rise in the outlet section When the maximum water pressure of the water network is exceeded, the pressure relief component opens the passage from the outlet section to the discharge pipe, and the reverse thrust component is driven by the flow kinetic energy in the discharge pipe to rotate, and the end of the reverse thrust component located in the transition section gives water flow towards the inlet segment force. Obtaining energy from the discharged water body suppresses further aggravation of water hammer.

Description

technical field [0001] The invention relates to the technical field of water hammer effect suppression, in particular to an anti-hammer device with a flexible sealing structure for water supply pipelines. Background technique [0002] When the water body flowing in the pipeline suddenly stops flowing, due to its own inertia, the water body on the incoming side of the closing point will still have forward kinetic energy, and this energy will cause a sharp rise in pressure at the closing point and the pressure will This phenomenon is particularly serious in the upper water section of the water supply pipeline, because the water supply pipeline is generally thicker, the flow passing through it is larger, and the inertial kinetic energy is more. Generally speaking, the pressure of the municipal water network enters When entering the community, there will be an initial pressure of about 0.3~0.5MPa, and the users at the lower floors will take it directly, while the users at the up...

AI Technical Summary

Problems solved by technology

Such a water hammer device resists the rising pressure through its own strength. The installation point of the device still needs to have greater pressure bearing performance, and the sealing performance of its connection structure also needs to be guaranteed. The flexible seal can fully adapt to pipeline installation. Process error and deformation, but the pressure bearing capacity is not enough, and although the hard seal can withstand high pressure, the slight deformation of the pipeline and the improper pre-tightening force of the flange bolts will cause damage to the hard gasket and sealing ring. The sealing performance drops sharply. Most of the existing anti-hammer structures support the water hammer pressure through their own strength. Although the maximum pressure of the water hammer is lower than that when the anti-hammer structure is not installed, the installation of the existing anti-hammer structure is not enough. Eliminate the water hammer effect. When certain factors cause water hammer, there will still be 3 to 6 times the water hammer pressure near the device. Although most water network equipment can withstand this pressure, multiple water hammer effects will still cause The life of the equipment is reduced, and the existing anti-hammer device is not suitable for flexible sealing methods, and a hard seal is required to have a greater pressure bearing capacity, which in turn leads to an increase in the installation accuracy of the anti-hammer device

Images