Water hammer eliminating valve, water hammer eliminating pipeline and pipeline water hammer preventing method

Abstract

The invention discloses a water hammer eliminating valve, a water hammer eliminating pipeline and a pipeline water hammer preventing method. The water hammer eliminating valve comprises a valve body provided with a water inlet and a water outlet; and a valve element is arranged in the valve body. The water hammer eliminating valve further comprises a single-rod piston cylinder controlled by external signals; a piston rod of the single-rod piston cylinder is connected with the valve element; the external signals comprise opening or closing signals of a water pump and a valve in a pipeline withthe water hammer eliminating valve; and when the closing signals exist at the downstream of incoming water, the single-rod piston cylinder is controlled to press the valve element on the water outletof the valve body to close the water hammer eliminating valve. The impact of returned water currents to the water hammer eliminating valve or even the whole system can be reduced, and the reverse backflow impact energy consumption can be realized; and the harm of the water hammer effect is effectively reduced, so that the pipeline and accessories thereof are operated safely.

Description

technical field [0001] The invention relates to a water hammer reduction valve, in particular to a water hammer reduction valve, a water hammer reduction pipeline and a pipeline water hammer prevention method. Background technique [0002] Water hammer is also called water hammer. For liquids flowing in pressurized pipelines, the flow rate changes suddenly due to some reason (sudden closing of valves, sudden stop of water pumps, sudden opening and closing of guide vanes, etc.), due to the inertia of the liquid, it causes the alternating changes of sharp increase or decrease in pressure, that is Pressure waves, a phenomenon known as water hammer. Since the inner wall of the pipe is smooth, the water flows freely. When the opened valve is suddenly closed or the water pump is suddenly stopped, the subsequent water flow will continue to flow under the action of inertia. Impact force and water pressure, and produce destructive effects, because the pipeline is smooth, the flow ...

AI Technical Summary

Problems solved by technology

The water hammer effect is extremely destructive: if the pressure is too high, it will cause the pipe to rupture; on the contrary, if the pressure is too low, it will cause the pipe to collapse, and it will damage valves and pumps, etc.

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