High-voltage AC (alternate current) and DC (direct current) voltage divider with heat dissipation structure

A technology of DC voltage divider and heat dissipation structure, applied in the direction of voltage divider, etc., can solve the problem of unsatisfactory heat dissipation

Inactive Publication Date: 2012-07-11
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The heat that is not generated by this patent is accumulated in th

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  • High-voltage AC (alternate current) and DC (direct current) voltage divider with heat dissipation structure
  • High-voltage AC (alternate current) and DC (direct current) voltage divider with heat dissipation structure
  • High-voltage AC (alternate current) and DC (direct current) voltage divider with heat dissipation structure

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Embodiment Construction

[0014] Marks in the drawings: 1—heat dissipation area, 2—working area, 3—resistor string, 4—insulated inner cylinder, 5—chassis, 6—conductive rod, 7—cover plate, 8—conductive outer cylinder, 9—insulation Outer cylinder.

[0015] Embodiments of the present invention will be further described below in conjunction with accompanying drawings: figure 1 , the present invention is made up of resistance string 3, insulating inner cylinder 4, chassis 5, conductive rod 6, cover plate 7, conductive outer cylinder 8, insulating outer cylinder 9. The area surrounded by the cover plate 7 and the conductive outer cylinder 8 forms a heat dissipation area 1 . In this embodiment, heat sinks are only added on the lower surface of the cover plate 7 and the outer surface of the conductive outer cylinder 8. When it is necessary to further improve the heat dissipation efficiency, additional fins can be added on the upper surface of the cover plate 7 and the inner surface of the conductive outer cyl...

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Abstract

The invention relates to a high-voltage AC (alternate current) and DC (direct current) voltage divider with a heat dissipation structure and belongs to the field of calibration, verification and detection of power equipment. According to the invention, radiating fins are arranged on the lower surface of a cover board and the outer surface of a conductive outer barrel of the high-voltage AC and DC voltage divider, a closed cavity is surrounded by a chassis, the cover board, the conductive outer barrel and an insulating outer barrel and insulating gas or oil is filled into the cavity, so that the effect of rapidly transferring heat inside the voltage divider into the outside environment is achieved, the temperature gradient of inner and outer barrels is effectively reduced, the potentials inside and outside the voltage divider are kept consistent and the measurement accuracy and the using safety are improved.

Description

technical field [0001] The invention relates to a high-voltage AC and DC voltage divider with a cooling structure, which belongs to the field of calibration, verification and detection of electric equipment. Background technique [0002] High-voltage AC and DC voltage dividers are important equipment for measuring high-voltage AC and DC voltages. Due to the high working voltage, the resistance element inside the high-voltage divider generates a lot of heat. The resistor is sealed in a closed space composed of an insulating outer cylinder, chassis and cover plate, and the heat dissipation efficiency is low. The heat generated by the resistance is at the top of the divider. Accumulation, resulting in high temperature in the upper part of the voltage divider, lower temperature in the lower part, and a large temperature gradient inside the voltage divider. The resistance of each part of the voltage divider changes due to the temperature difference, which affects the accuracy of...

Claims

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Application Information

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IPC IPC(8): G01R15/04
Inventor 章述汉李登云李前李鹤胡浩亮熊前柱杨春燕
Owner STATE GRID CORP OF CHINA
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