Buffer and diversion water hammer eliminator and using method

Abstract

The invention provides a buffer and diversion water hammer eliminator which comprises an inner piston buffer part and an outer steady-pressure diversion part which are coaxially arranged inside and outside, wherein the inner piston buffer part comprises an outer wall of the inner piston buffer part as well as an upper piston and a lower pressure regulating piston which are arranged inside the inner piston buffer part; the lower pressure regulating piston is connected with an upper piston through a pre-pressing spring; the top and the bottom of the outer wall of the inner piston buffer part are respectively connected with upper and lower sealing plates; a sealing flange is arranged above the upper piston; the outer wall of the inner piston buffer part is provided with a pressure discharge hole; the outer steady-pressure diversion part comprises an outer wall of the outer steady-pressure diversion part, wherein the outer wall of the outer steady-pressure diversion part is arranged on the outer part of the outer wall of the inner piston buffer part, and the top and the bottom of the outer steady-pressure diversion part are respectively connected with outer walls of the outer steady-pressure diversion parts of the upper and the lower sealing plates; and a breathing water drain-off valve is arranged outside the outer wall of the outer steady-pressure diversion part. The invention further provides a using method of the buffer and diversion water hammer eliminator. The buffer and diversion water hammer eliminator can effectively eliminate a water hammer phenomenon in a water supply process of a water pump, so that a pipe network is kept at stable water pressure, and therefore, safety of a water supply system is guaranteed.

Description

technical field [0001] The invention relates to a water hammer elimination device, in particular to a buffer diversion water hammer elimination device. Background technique [0002] Water hammer is when there is a sudden power failure or when the valve is closed too fast, due to the inertia of the pressure water flow, a water shock wave is generated, just like a hammer, so it is called water hammer. The force generated by the back and forth shock waves of the water flow, sometimes so great, can damage valves and pumps. [0003] When the electric water pump is started at full voltage, it can accelerate from a static state to a rated speed in a short period of time, and the flow in the pipeline increases from zero to the rated flow. Since the fluid has momentum and a certain degree of compressibility, a sharp change in the flow rate will cause an impact of too high or too low pressure in the pipeline, as well as the phenomenon of "cavitation". The impact of pressure will for...

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