Waterproof hammer device provided with flexible sealing structure and used for water supply pipeline

Abstract

The invention relates to the technical field of water hammer effect suppression, in particular to a waterproof hammer device provided with a flexible sealing structure and used for a water supply pipeline. The device comprises a water supply pipe, a negative pressure tank, a discharge pipe, a pressure relief assembly and a reverse thrust assembly, wherein the water supply pipe comprises an inlet section, a transition section and an outlet section which are connected in sequence, the inlet section and the outlet section are horizontal, the transition section is vertical, a first venturi tube is arranged on the inlet section, the side wall of the outlet section is connected with the pressure relief assembly, the pressure relief assembly is connected with the discharge pipe, the other end of the discharge pipe is connected to a negative pressure tank, the negative pressure tank is further connected to the first venturi tube, one end of the reverse thrust assembly extends into the transition section, and the other end of the reverse thrust assembly extends into the discharge pipe. According to the invention, when the pressure relief assembly detects that the pressure in the outlet section rises to exceed the highest water pressure of the water network, the pressure relief assembly opens a channel from the outlet section to the discharge pipe, the reverse thrust assembly is pushed by flowing kinetic energy in the discharge pipe to rotate, and the end, located in the transition section, of the reverse thrust assembly provides acting force of water flow towards the inlet section, so that energy is obtained from the discharged water body to inhibit further aggravation of the water hammer effect.

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...

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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

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