Waterproof device for spindle of isolating switch

A waterproof device and isolating switch technology, applied in electrical switches, electrical components, circuits, etc., can solve problems such as poor connection and sealing of the shaft of the grounding switch, reduce rust maintenance costs, ensure safe and stable operation, and reduce costs.

Active Publication Date: 2013-12-04
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to poor sealing of the connection between this type of isolating switch and the grounding knife switch shaft, rainwater easily enters the transfer switch through the transmission rod when it rains, and then causes the DC system to be grounded, and the AC short circuit occurs. The key to solving this problem is to prevent rainwater from entering

Method used

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  • Waterproof device for spindle of isolating switch

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Embodiment Construction

[0009] Such as figure 1 As shown, the present invention is a waterproof device for the rotating shaft of a disconnector, which includes a rubber tube, which is split into two identical half-pipes 2 from the middle in the axial direction, and the bottom of each half-pipe 2 is connected with a stainless steel tube. The semi-annular plates 3 are hermetically connected.

[0010] The outer diameter of the rubber tube gradually increases from the top to the bottom, and the outer diameter of the rubber tube at the bottom is 1.2-5 times the outer diameter of the rubber tube at the top. The surface is conical.

[0011] In addition, the bottom of each half-pipe 2 near the stainless steel semicircular plate 3 is an inwardly concave arc, and the applicant has found through research that the arc here is inwardly concave, so when rainwater flows from above When falling, the water flow flowing from the bottom of the half pipe 2 to the outside is formed under the action of gravity, so that ...

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Abstract

The invention relates to a waterproof device for a spindle of an isolating switch. The waterproof device is characterized by comprising a rubber pipe. The rubber pipe is divided into two identical half pipes (2) from the middle in the axial direction, and the bottom of each half pipe (2) is in sealing connection with a stainless steel semicircular plate (3). Trial shows that the waterproof device can effectively prevent rain from entering a mechanism box through the spindle to avoid direct-current ground connection and alternating-current short circuit and guarantee safe and stable operation of equipment. Thus, the labor investment for finding the direct-current ground connection faults and the alternating-current short circuit fault is correspondingly avoided, and the labor cost is reduced. The waterproof device further improves equipment reliability and reduces the maintenance cost for removing rust on an auxiliary switch or the cost for replacing spare parts.

Description

technical field [0001] The invention relates to a waterproof device for a rotating shaft of an isolating switch. Background technique [0002] At present, multiple sets of isolating switches and grounding switches are generally installed in the converter station of the power system, such as the combined isolating switch and grounding switch of the model ZCW-363DW. Due to the poor sealing of the connection between this type of isolating switch and the grounding knife switch shaft, rainwater can easily enter the transfer switch through the transmission rod when it rains, which will cause the DC system to be grounded and the AC short circuit will occur. The key to solving this problem is to prevent rainwater from entering. Contents of the invention [0003] The purpose of the present invention is to provide a waterproof device for the isolating switch shaft, which can prevent rainwater from entering the isolating switch mechanism box. [0004] A waterproof device for the rot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/04
Inventor 吴鹏刘春玲杨炯
Owner STATE GRID CORP OF CHINA
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