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Box-sharing type column switch and incoming and outgoing line sleeve thereof

An on-column switch and co-box technology, which is applied in the field of co-column post switches and their inlet and outlet bushings, can solve the problems of reducing the safe insulation distance inside the box, and achieve the effect of improving the flow capacity and facilitating installation.

Pending Publication Date: 2021-08-06
PINGGAO GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an inlet and outlet bushing of a common box-type switch on the pole, so as to solve the problem that the pillar insulator type voltage sensor installed inside the box in order to realize the main circuit voltage detection in the prior art will reduce the internal force of the box. There is a technical problem of safe insulation distance; at the same time, the present invention also provides a common box-type column switch using the above-mentioned inlet and outlet bushings

Method used

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  • Box-sharing type column switch and incoming and outgoing line sleeve thereof
  • Box-sharing type column switch and incoming and outgoing line sleeve thereof
  • Box-sharing type column switch and incoming and outgoing line sleeve thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] In the common box-type column switch provided in this embodiment, a voltage sensor 22 is directly integrated and installed in the inlet and outlet bushing 2, and the voltage sensor 22 itself does not need to be provided with an insulation vertical. The insulating resin layer 24 on the 2 is used as a protection, and the power-taking of the high-voltage side of the voltage sensor 22 is completed in the insulating resin layer 24, and only the secondary lead-out wire 3 is drawn out. Compared with the switch box body, the secondary lead wire 3 is a low-voltage lead wire, which will not affect the insulation distance inside the switch box body 6, and can effectively improve the safety of the common-box type pole switch.

[0065] The structure of the common box type column switch is as follows: Figure 2 to Figure 4 As shown, the common box-type pole switch in this embodiment includes a switch box body 6, and a switch function unit 7 is arranged inside the switch box body 6, w...

specific Embodiment 2

[0077] The main difference between it and Embodiment 1 is that in Embodiment 1, the voltage sensor and the central conductive rod are arranged concentrically, which is convenient for arranging the mold during pouring. In this embodiment, a perforation is set eccentrically on the voltage sensor, and a spring contact finger is also installed in the perforation. The rods are arranged eccentrically as a whole, which can be realized by adjusting the position of the supporting mold during pouring.

specific Embodiment 3

[0079] The main difference between it and Embodiment 1 is that in Embodiment 1, the voltage sensors are set outside the conductive rods at intervals. In this embodiment, the voltage sensor can also be arranged on the side of the conductive rod as a whole. At this time, the conductive connection between the high-voltage side of the voltage sensor and the conductive rod can be realized through the built-in high-voltage wire. When installing, it can be machined on the conductive rod. Groove, the connection section of the high-voltage wire is put into the groove correspondingly, and the high-voltage wire and the conductive rod are fixedly assembled together by means of welding connection or screw connection. At this time, the high-voltage wire is also integrally cast and fixed on the insulating resin layer In the same way, it will not affect the insulation distance inside the switch box.

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Abstract

The invention relates to a box-sharing type column switch and an incoming and outgoing line sleeve thereof. The incoming and outgoing line sleeve comprises a conductive rod and an insulating resin layer; a voltage sensor is integrally poured and fixed in the insulating resin layer; the high-voltage side of the voltage sensor is conductively connected with the conductive rod; and the low-voltage side of the voltage sensor is connected with a secondary lead-out wire, and the secondary lead-out wire is used for penetrating out of the insulating resin layer and entering a switch box body of the common box type column switch so as to be connected with a corresponding secondary junction box. The voltage sensor is directly poured and fixed in the insulating resin layer, the insulating resin layer is used for protecting the voltage sensor, conductive connection between the high-voltage side of the voltage sensor and the conductive rod is achieved in the insulating resin layer, high-voltage electricity taking occurs in the insulating resin layer, interference to the outside is avoided; and the led-out secondary lead-out wire is low-voltage, and the insulation distance in the switch box body is not influenced, so that the safety performance of the column switch using the incoming and outgoing line sleeve is improved.

Description

technical field [0001] The invention relates to a common-box type pole-mounted switch and its inlet and outlet bushings. Background technique [0002] The current primary and secondary fusion common box-mounted switches (such as FZW28, ZW20) are mostly equipped with voltage sensors, which are used to detect the voltage of the incoming and outgoing bushings and output the required voltage signal. For example, the common box-type primary and secondary fusion vacuum circuit breaker disclosed in the Chinese utility model patent with the authorized announcement number CN208796897U includes a box body, a vacuum interrupter is arranged inside the box body, and an inlet and outlet line bushing is arranged on one side of the box body. A zero-sequence voltage sensor is installed in the box, and the zero-sequence voltage sensor is conductively connected with the conductive clip on the inlet and outlet bushings through wires to realize high-voltage power extraction. [0003] In fact, t...

Claims

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Application Information

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IPC IPC(8): H02B1/48G01R19/00
CPCH02B1/48G01R19/0084
Inventor 郭锋卢健费翔祁海洋王海燕朱志豪张庆飞
Owner PINGGAO GRP
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