High voltage electrical apparatus temperature detecting probe and high voltage electrical apparatus temperature monitoring system

A technology of high-voltage electrical appliances and temperature-measuring probes, which is applied to thermometers, thermometers, and instruments that undergo physical/chemical changes, and can solve problems such as complex measurement systems, inability to monitor the temperature of high-voltage electrical appliances online, and high technical requirements

Inactive Publication Date: 2010-07-28
WENZHOU UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Another object of the present invention is to provide a simple structure, safe and reliable, to solve the problem that the temperature of high-voltage electrical appliances cannot be monitored online, or the measurement system is complicated, the cost is high, the technical requirements are high, and the insulation of high-voltage electrical appliances is affected. High voltage electrical appliance temperature monitoring system

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  • High voltage electrical apparatus temperature detecting probe and high voltage electrical apparatus temperature monitoring system
  • High voltage electrical apparatus temperature detecting probe and high voltage electrical apparatus temperature monitoring system
  • High voltage electrical apparatus temperature detecting probe and high voltage electrical apparatus temperature monitoring system

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Embodiment Construction

[0017] The present invention is specifically described below by the embodiment, only for further illustrating the present invention, can not be interpreted as the limitation of protection scope of the present invention, the technical engineer of this field can make some non-essential improvements and improvements to the present invention according to the content of the above-mentioned invention Adjustment.

[0018] Temperature probes for high-voltage electrical appliances, such as figure 2 As shown, a hollow fiber 1 is included, and a cholesteric liquid crystal 11 is encapsulated in the hollow fiber 1 . The cholesteric liquid crystal has a layered structure, and the molecular axis direction of each layer is slightly offset from the adjacent molecular axis direction, while the liquid crystal forms a helical structure as a whole, showing selective light scattering. Only the light whose wavelength λ satisfies the formula (1) is reflected:

[0019] λ=nP (1)

[0020] Among them...

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Abstract

The invention discloses a high voltage electrical apparatus temperature detecting probe and a high voltage electrical apparatus temperature monitoring system, wherein the system comprises a light source, a temperature detecting probe, an optical coupler, a color sensor, a signal process module, a data arithmetic device, and a display module; the temperature detecting probe comprises hollow fiber which is internally encapsulated with cholesteric crystal; the temperature detecting probe is connected with the light source, the hollow fiber and the color sensor through the optical coupler to form a light path connection; the electrical signal output end of the color sensor is connected with the signal process module, and an electrical signal processed by the signal process module is displayed on the display module after being operated by the arithmetic device. The invention has simple structure, is safe and reliable, can solve the problems that the high voltage electrical apparatus temperature can not be monitored on line, or the system has complex measuring system and high expense and high technical requirements, and has influence on the high voltage electrical apparatus insulativity and the like.

Description

technical field [0001] The invention relates to a temperature monitoring system, in particular to a high-voltage electrical appliance temperature monitoring system suitable for monitoring the temperature of a high-voltage electrical appliance. Background technique [0002] For high-voltage electrical appliances such as large generator sets, high-voltage switches, and high-voltage substation transmission equipment, the contact resistance increases when the joints are in poor contact, and heat will be generated when the load current flows. Due to the action of the alternating electromagnetic field, AC high-voltage electrical appliances will also generate eddy current and hysteresis loss in the ferromagnet, resulting in an increase in the temperature of the entire electrical appliance. When the temperature reaches a certain height, the mechanical strength and insulation strength of metals and insulating materials used in high-voltage electrical appliances will be significantly ...

Claims

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Application Information

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IPC IPC(8): G01K11/32
Inventor 钱祥忠
Owner WENZHOU UNIVERSITY
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