Non-negative pressure pump station with function of protecting water hammer

Abstract

The invention relates to a non-negative pressure pump station with a function of protecting a water hammer, comprising an incoming water regulating airbag tank, a water supply regulating resonance tank, and a plurality of variable frequency water pumps, wherein the inlet water end of the incoming water regulating airbag tank is connected with a running water incoming water pipe net, and the outlet water tank is connected with the inlet water ends of the variable frequency water pumps. Through the technical scheme, the high pressure water in the water supply regulating resonance tank will rapidly compensate to stabilize the water discharging pressure at the back of the pump when the water hammer is triggered in case that the pump is suddenly stopped; high pressure energy of the water hammer can be reduced by a damping function of a pump station bidirectional compensator and then enter into the water supply regulating resonance tank if the water hammer caused by sudden stopping of the pump cannot be completely eliminated; a gas and water mixing zone in the water supply regulating resonance tank can weaken a pressure variation in the pump station caused by various working conditions, to inhibit the water hammer phenomenon; and the non-negative pressure pump station further improves the safety of the entire pump station while improving the water supply quality of the running water pipe net.

Description

technical field [0001] The invention relates to a pressurized pump station water supply equipment in a tap water pipe network, in particular to a non-negative pressure pump station with a water hammer protection function. Background technique [0002] In a water pipeline with a certain pressure, sometimes the water flow rate changes suddenly due to the sudden stop of the pump unit, which will cause a sharp change in pressure. This phenomenon of hydraulic change is called water hammer. There are two pumping stations without negative pressure. The end is connected to the tap water pipe network and the tap water pipe network respectively through the connecting pipe, which can superimpose the pressure of the incoming water at the upper end. When the pump station stops suddenly, it will cause a long distance between the front and rear sections Corresponding pressure fluctuations are generated in the water pipeline. The characteristic of the fluctuation at the front end of the pu...

AI Technical Summary

Problems solved by technology

[0004] In the tap water pressurized pumping station in the prior art, since the pumping station equipment is directly connected to the municipal pipe network, especially for the pumping station with large flow and high lift, the protection function against water hammer is limited, and there are certain safety hazards

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