Oil surface thermograph for transformer

A transformer and oil level technology, applied in thermometers, instruments, thermometers with electric/magnetic elements that are directly sensitive to heat, etc., can solve the problems of low temperature display and control accuracy, easy failure and damage, complex structure, etc. , to achieve the effect of strong anti-electromagnetic interference ability, improved reliability and service life, and simple maintenance

Inactive Publication Date: 2012-08-01
NORTHWESTERN POLYTECHNICAL UNIV
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  • Claims
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AI Technical Summary

Problems solved by technology

Therefore, this kind of transformer oil level thermometer has the disadvantages of low temperature

Method used

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  • Oil surface thermograph for transformer
  • Oil surface thermograph for transformer
  • Oil surface thermograph for transformer

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments of the present invention. Such as figure 1 As shown: the instrument control module 2, the terminal block 3, and the mechanical counter 4 are installed in the housing 1, and the temperature sensor 5 and the synchronous pulley assembly 6 are connected to the instrument control module 2. The instrument control module 2 is placed in the anti-electromagnetic Inside the housing 7 of interference design, the instrument control module 2 is mainly composed of a signal conditioning acquisition circuit 201, a single-chip microcomputer 202, a data transmission circuit 203, a temperature signal conversion circuit 204, a motor module 205, a relay 206, and a watchdog 207.

[0023] refer to figure 2 As shown, it is a functional block diagram of an embodiment of the present invention. The temperature sensor 5 generates an electrical signal by sensing changes in...

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Abstract

The invention relates to an oil surface thermograph for a transformer, which is used for detecting and controlling oil temperature of the transformer and comprises a casing 1, a thermograph control module 2, terminals 3, a mechanical counter 4, a temperature sensor 5 and a synchronous pulley component 6, wherein the thermograph control module 2, the terminals 3, the mechanical counter 4, the temperature sensor 5 and the synchronous pulley component 6 are arranged in the casing 1. The thermograph control module 2 is arranged in a shell 7 and connected with the temperature sensor 5 and the synchronous pulley component 6 and comprises a temperature signal regulation and acquisition circuit, a single-chip microcomputer, a data transmission circuit, a temperature signal conversion circuit, a motor module, a relay and a watchdog. Complex temperature sensors and elastic transmission parts thereof are omitted, no complex fan control mechanism is adopted, and precision measuring, displaying and signal transferring of the oil surface temperature of the transformer and intelligent interaction with a secondary instrument or computer are realized by means of the simple and reliable structure and the mechatronic sensing and control technique. Further, since all control circuits are mounted in the closed casing of an electromagnetic interference resistant design, the oil surface thermograph is high in electromagnetic interference resistance and simple in maintenance, reliability is greatly improved while the service life is greatly prolonged, and manufacturing cost is greatly reduced.

Description

technical field [0001] The invention relates to a transformer oil surface temperature instrument for detecting and controlling transformer oil temperature. Background technique [0002] During the continuous use of the transformer, its internal temperature will increase with the increase of the use time. This requires monitoring the temperature of the oil surface of the transformer and starting the cooling device in time to avoid accidents of the transformer equipment due to excessive temperature. Ensure the normal operation of the grid system. [0003] Searching through the search database of the National Patent Office, at present, only the BWY-804J (TH) series transformer oil level thermometer produced by Dalian Jinzhou Instrument Factory has applied for a national patent (patent authorization number: ZL01241472.7). This transformer oil The surface thermometer is mainly composed of a shell, a temperature control instrument placed inside the shell, terminal blocks, a fan c...

Claims

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Application Information

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IPC IPC(8): G01K7/18
Inventor 容建刚史彦芳谷文韬雷少坤周少伟李洲洋杨勇冯新
Owner NORTHWESTERN POLYTECHNICAL UNIV
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