A device for simultaneously measuring the motion acceleration of the reciprocating pump valve disc and the impact force of the pump valve

Abstract

The present invention proposes a device that can simultaneously measure the motion acceleration of the valve disc of a reciprocating pump and the impact force of the pump valve. Acceleration and impact force signals of the movement, the valve cover 9 is equipped with two signal line sealing devices of the same structure (including studs 6, nuts 7, internal heat-shrinkable elastomer (TPE) 13 and O-ring 14), used The acceleration output signal line 5 and the force output signal line 11 of the impedance head sensor are drawn out from the inner cavity of the valve cylinder 10 to ensure that the pump valve does not leak; after the signal line is drawn out, it is connected to the charge amplifier 15, and the signal passes through the charge amplifier The amplified input is sent to the data acquisition box 16, and is transmitted to the computer and the pump valve impact characteristic parameter test and analysis system 17 by the USB interface of the data acquisition box, so as to obtain the real impact motion law of the pump valve of the reciprocating pump, which provides a basis for perfecting the design theory of the pump valve. Important scientific basis and experimental verification methods.

Description

technical field [0001] The invention is a device for simultaneously measuring the motion acceleration of the valve disc of a reciprocating pump and the impact force of the pump valve (including the valve disc and the valve seat), thereby simultaneously measuring the motion acceleration of the valve disc and the impact force of the pump valve when the valve disc hits the valve seat. The impact force brought by it can provide a basis for studying the theory of no impact of pump valves, material selection and structural design of pump valves, and is of great significance for determining the maximum allowable stroke times and pump pressure and other working parameters of reciprocating pumps. The device is equipped with a customized waterproof and pressure-resistant piezoelectric crystal impedance head sensor (integrated force sensor and acceleration sensor, installed on the measured valve disc, which can simultaneously measure the motion acceleration of the valve disc and the conta...

AI Technical Summary

Problems solved by technology

Some scholars have tried such a method, and proposed to use the strain gauge test technology on the valve seat to measure the stress generated by the impact of the valve seat. The object of action is the ribbed valve seat. The hole valve seat is not applicable, and this method cannot study the impact force on the valve disc

Since the valve disc works in the liquid in the pump cylinder with pressure, so far, no one has proposed a more effective and widely applicable method for measuring the impact force of the pump valve, nor has there been a method that can simultaneously measure the motion acceleration and Device for pump valve impact force

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