System for monitoring sound and vibration of hydroelectric generating unit

A technology of hydroelectric unit and sound, which is applied in the field of monitoring the health status of hydroelectric unit and early warning

Inactive Publication Date: 2011-09-14
深圳思量微系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to solve the problem of low-cost, high-sensitivity, and high-reliability monitoring points that are difficult to effectively implement in existing hydroelectric unit health monitoring, and to provide a method for hydroelectric unit health monitoring, which has low cost and multi-point layout monitoring points , real-time monitoring of sound and vibration abnormalities of all hydroelectric units in the area, so as to conduct health analysis and fault prediction of hydroelectric units

Method used

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  • System for monitoring sound and vibration of hydroelectric generating unit
  • System for monitoring sound and vibration of hydroelectric generating unit
  • System for monitoring sound and vibration of hydroelectric generating unit

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Embodiment Construction

[0014] The features and advantages of the present application will be described with reference to the accompanying drawings.

[0015] For the convenience of expression, we refer to the monitoring unit as SP and the monitoring center as SC. Through the interconnection of a series of SP and SC, the monitoring information collection of multiple hydroelectric units in the monitoring area can be realized, so that the sound and vibration information of the hydroelectric units can be reliably transmitted to the monitoring center, and the health status of all monitored units can be obtained. The entire structure includes at least one SP and at least one SC, at least one of SP and SC is interconnected, and the interconnection of SC and SC, such as Figures 1 to 3 shown.

[0016] The interconnection between SP and SC, SC and SC can be wireless or wired.

[0017] Figure 4 It is an embodiment of SP, which includes two copolymer piezoelectric sound sensing units and one copolymer piezo...

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Abstract

The invention discloses a method for monitoring sound and vibration of a hydroelectric generating unit. According to the invention, a plurality of monitoring units and a plurality of monitoring centers distributed in the same area are involved. The monitoring units comprise one or more copolymer piezoelectric sensing units for sensing the sound and the vibration of 0.01 Hz to 10 kHz of the hydroelectric generating unit, and a signal processing unit. The signal processing unit pre-processes the received sensing signal or data of the sensing unit and transmits out. The monitoring centers receive the data sent by the plurality of monitoring units within the area, and analyze and process the data; the monitoring centers can exchange data with each other to obtain all the sound and vibration information of the hydroelectric generating unit within the area, so as to predict a fault of the hydroelectric generating unit. The invention has the characteristics of low cost, easiness in installation and flexibility in networking, and can realize real-time monitoring and fault warning for the hydroelectric generating units.

Description

【Technical field】 [0001] The invention relates to the field of mechanical equipment monitoring instrumentation, sensors and circuit design, in particular to a low-cost monitoring method that can flexibly arrange monitoring points and comprehensively monitor the sound and vibration of the hydroelectric unit in the area, thereby obtaining the health status of the hydroelectric unit and giving an early warning monitoring method . 【Background technique】 [0002] The equipment of hydropower units is huge, the structure is complex, and there are many causes of failure. Although some failures may not necessarily be manifested in the form of vibration, statistical resources show that about 80% of failures or accidents of hydropower units are reflected in vibration signals. The vibration parameters of the lower frame of the unit indicate the balance of the rotating part, and the extreme frequency components of the vibration indicate the electromagnetic vibration of the generator, etc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H11/08
Inventor 冯晓星王新安葛彬杰王金泊
Owner 深圳思量微系统有限公司
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