Water hammer discharge valve

Abstract

The invention discloses a water hammer discharge valve. The water hammer discharge valve comprises a valve body and a casing pipe both connected through a connecting base, wherein the valve body is internally provided with a valve seat and a valve clack both of which are matched mutually; the valve clack is provided with a central shaft; the casing pipe is internally provided with a pressure adjusting system; a central hole matching with the central shaft of the valve clack is arranged at the lower end of the connecting base; an inner hole which is communicated with the central hole is arranged at the upper end of the connecting base; the central shaft of the valve clack penetrates through the central hole of the connecting base; a piston is arranged between the central shaft of the valve clack and the pressure adjusting system; the piston is arranged in the inner hole of the connecting base in a sealing manner; the side surface of the connecting base is also communicated with an oil cup through a connecting pipe; and the connecting pipe is provided with a one-way throttle valve. The water hammer discharge valve has a simple structure and a rational design, can be turned on rapidly to remove the water hammer, can be closed slowly to avoid second water hammer generated caused by the too rapidly closed valve, and has a very great practical value.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a quick-opening and slow-closing water hammer relief valve suitable for clean water pipeline systems. Background technique [0002] At present, pressure relief safety valves are generally used in clean water pipeline systems. These valves are direct-acting quick-opening and quick-closing or pilot-operated relief valves. After setting the value, open the pressure relief; but when the pump is stopped suddenly, this type of valve will be closed quickly, causing the circulation flow rate in the valve outlet pipeline to drop suddenly, and the return shock pressure will be generated. High, can make the pressure of the outlet section of the valve rise to several times of the rated pressure, which is the water hammer phenomenon in the pipeline, which can cause the valve or pipeline to rupture and cause an accident. [0003] Due to the rapid instantaneous high pressure generated by water ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of the above-mentioned background technology, and provide a water hammer relief valve, which can not only be opened quickly to eliminate water hammer, but also can solve the secondary instantaneous high pressure caused by the excessive closing speed of the relief valve itself The problem

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