A device for monitoring the moving parts of the fluid end of a reciprocating pump and the sound of fluid leakage

Abstract

The invention provides a device for monitoring sound of moving components and fluid leakage of a reciprocating pump hydraulic end. The device has the characteristics of being easy to install, accurate in measurement and the like and is mainly composed of a pump valve deck 2, a local sound isolation collecting end 3, a data collecting box 5 and a sound signal analysis and diagnosis system 7, and the pump valve deck 2 and the local sound isolation collecting end 3 are arranged on a reciprocating pump head 1. A cavity is formed in the local sound isolation collecting end, a microphone and a front amplifier are arranged in the cavity, the sound of movement of a pump valve and a piston and fluid leakage can be accurately collected, and the collected sound signals are amplified, transmitted to the data collecting box 5 through a data transmission line 4, and then transmitted to the sound signal analysis and diagnosis system 7 through an output signal line 6. Therefore, the sound signals of the reciprocating pump hydraulic end can be accurately collected, and the sound signal analysis and diagnosis system 7 accurately recognizes the failure modes of the moving components and fluid leakage inside the reciprocating pump hydraulic end.

Description

Technical field: [0001] The invention relates to the fields of sound measurement, sound insulation and noise reduction and fault diagnosis inside the fluid end of a reciprocating pump. It is mainly used to measure the abnormal sound from the internal pump valve, piston movement and fluid leakage of the liquid end of the reciprocating pump, and then analyze and process the collected sound signals and identify the fault state, which can be used for the working state monitoring and fault diagnosis of the reciprocating pump. Maintenance provides a scientific basis. The sound sensor in the local sound-proof sound collection end of the device is equipped with a microphone and a preamplifier, installed on the valve cover of the reciprocating pump valve to be measured, sealed and fixed with sound-proof sealant, and the sound signal collected by the microphone is passed through The data acquisition box is transmitted to the sound signal analysis and diagnosis system for analysis and d...

AI Technical Summary

Problems solved by technology

In order to solve the problem of interference caused by irrelevant noise from other equipment at the working site of the reciprocating pump and the inaccurate sound collection of the measurement target, the present invention sets a local soundproof sound collection end in the invented device and connects the microphone and the front The amplifier is placed in this part of the sound-proof sound collection terminal

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