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Intelligent centrifugal pump cavitation fault detector

A technology of centrifugal pumps and detectors, which is applied in the field of testing, can solve problems such as losses, and achieve the effects of reasonable structure, low cost, and reliable performance

Inactive Publication Date: 2011-01-19
NORTHEAST DIANLI UNIVERSITY
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Accidents caused by pump failures are often catastrophic and costly

Method used

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  • Intelligent centrifugal pump cavitation fault detector
  • Intelligent centrifugal pump cavitation fault detector
  • Intelligent centrifugal pump cavitation fault detector

Examples

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Embodiment Construction

[0009] The intelligent centrifugal pump cavitation detector of the present invention will be described in detail below using the accompanying drawings and embodiments

[0010] refer to figure 1 , the intelligent centrifugal pump cavitation detector of the present invention includes a signal acquisition system 2 composed of a pressure transmitter arranged at the inlet of the centrifugal pump 1 and connected to a signal processing system 3, and the signal processing system 3 is connected to a detection system 4 , the detection system 4 is connected with the display control system 5 . Accurately collecting the pressure pulsation signal at the inlet of the centrifugal pump 1 by the signal acquisition system 2 is a key link in fault diagnosis. In order to obtain an accurate pressure pulsation waveform and reduce the detection error caused by waveform distortion, the pressure tap at the inlet of the centrifugal pump 1 must be small enough; and since the low-frequency pulsation only...

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Abstract

The invention discloses an intelligent centrifugal pump cavitation fault detector, which is characterized by comprising a signal acquisition system, a signal processing system, a detection system and a display control system, wherein the signal acquisition system is a pressure transmitter arranged at the inlet of a centrifugal pump; the signal processing system comprises a singlechip, a latch, a program memory, decoder, an analog-to-digital converter, a D trigger, a NOT gate and an NOR gate; the detection system is used for analyzing wavelet multi-dimensional statistical characteristic quantity, performing characteristic extraction on signals, classifying and identifying the extracted characteristic parameters by using a support vector machine to differentiate different cavitation states of the centrifugal pump at a normal running state, a primary cavitation stage, a light cavitation stage and a serious cavitation stage and transmitting the final detection result to the display control system; and the display control system comprises a liquid crystal display module, a loudspeaker (LS) and waved switches S3-S6. The detector has the advantages of reasonable structure, reliable performance, quick and accurate detection, low expense, capability of fully meeting the cavitation fault diagnosis requirement of the centrifugal pump and the like.

Description

technical field [0001] The invention relates to the technical field of testing, and is an intelligent centrifugal pump cavitation fault detection device. Background technique [0002] Centrifugal pumps are general-purpose machines that are widely used, and pumps are developing toward heavy loads, high speeds, and light weights. This makes the working intensity of the pump continue to increase, the working conditions are becoming more and more severe, and the incidence of various pump failures continues to increase. Accidents caused by pump failures are often catastrophic and costly. Therefore, it is particularly important to ensure its safe and reliable operation. There are many factors that affect the safety and reliability of the centrifugal pump unit, and cavitation is one of the important factors. Contents of the invention [0003] The object of the present invention is to provide an intelligent centrifugal pump cavitation fault detection device with reasonable stru...

Claims

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Application Information

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IPC IPC(8): F04B51/00
Inventor 周云龙梁超高云鹏孙斌洪文鹏
Owner NORTHEAST DIANLI UNIVERSITY
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