Eliminating device of water outflow water hammer and negative-pressure-free pump station

Abstract

The invention relates to the technical field of water supply equipment, in particular to an eliminating device of a water outflow water hammer and a negative-pressure-free pump station. The eliminating device comprises a water inflow collecting pipe connected with municipal inflow and a water outflow collecting pipe connected with a user. The eliminating device comprises a compensator and a watersupply adjusting harmonic tank. A water inlet of the compensator is connected with the water outflow collecting pipe in order to adjust the pressure of water outflow water hammer impact generated in the water outflow collecting pipe. High-pressure water formed by mixing water and gas is stored in the water supply adjusting harmonic tank in advance, a water inlet of the water supply adjusting harmonic tank is connected with a water outlet of the compensator, and a water outlet of the water supply adjusting harmonic tank is connected to the water inflow collecting pipe and used for compensatingthe pressure of the water inflow collecting pipe when the water outflow water hammer occurs. The eliminating device has the beneficial effects that the water outflow water hammer of the negative-pressure-free pump station is effectively eliminated, then pipelines and equipment are protected, and economic losses are avoided.

Description

technical field [0001] The invention relates to the technical field of water supply equipment, in particular to a water hammer elimination device and a non-negative pressure pumping station. Background technique [0002] During the water delivery process of the non-negative pressure pumping station, when the non-negative pressure pumping station suddenly loses power, due to inertia, water hammer occurs at the back end of the non-negative pressure pumping station, and the water column in the pipeline at the back end of the non-negative pressure pumping station The liquid column will be broken, and the pressure at the broken place will drop sharply to generate negative pressure, which will cause the risk of damage to the pipeline and equipment. At the same time, the gas will precipitate from the water column at the broken place to fill the gap at the broken place The spatial position, and the water column in the pipeline is not in a stable state. When the two sections of water...

AI Technical Summary

Problems solved by technology

[0002] During the water delivery process of the non-negative pressure pumping station, when the non-negative pressure pumping station suddenly loses power, due to inertia, water hammer occurs at the back end of the non-negative pressure pumping station, and the water column in the pipeline at the back end of the non-negative pressure pumping station The liquid column will be broken, and the pressure at the broken place will drop sharply to generate negative pressure, which will cause the risk of damage to the pipeline and equipment. At the same time, the gas will precipitate from the water column at the broken place to fill the gap at the broken place The space position, and the water column in the pipeline is not in a stable state. When the two sections of water column are broken and bridged, a huge boost damage will occur, which will cause safety accidents such as pipe explosion.

[0003] In the prior art, in order to avoid the risk of damage to pipelines and equipment caused by water hammer at the back end of the non-negative pressure pump station, a safety valve is generally installed on the water pipe to protect the water hammer from the water outlet. However, it takes a certain time for the safety valve to open , when the outlet water hammer reaches the non-negative pressure pump station, the safety valve has not been opened, and a safety accident caused by the outlet water hammer may occur

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