CN214428539U

CN214428539U - High-current solid-sealed polar pole of high-voltage circuit breaker

Info

Publication number: CN214428539U
Application number: CN202023175995.5U
Authority: CN
Inventors: 吴粉蕊; 王志宏; 苏云云
Original assignee: Gansu Great Wall Electrical Engineering And Electrical Appliance Engineering Research Institute Co ltd; Tianshui Great Wall Switchgear Group Co Ltd
Current assignee: Gansu Great Wall Electrical Engineering And Electrical Appliance Engineering Research Institute Co ltd; Tianshui Great Wall Switchgear Group Co Ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-10-19
Anticipated expiration: 2030-12-25

Abstract

The utility model discloses a high-voltage circuit breaker heavy current seals utmost point post admittedly, including the explosion chamber, the upper end of explosion chamber is connected with last insulating contact arm through last leading-out terminal, and the lower extreme of explosion chamber is connected with insulating contact arm down through leading-out terminal down, be equipped with the electrically conductive clamp that is connected with the end of moving of explosion chamber in the inner chamber of leading-out terminal down, lower leading-out terminal and insulating contact arm's linking arm center down and open in the inner chamber of insulating contact arm down and be equipped with the ventilation hole that link up mutually. The side wall of the lower insulating contact arm is provided with a plurality of heat dissipation through grooves. The utility model discloses when heavy current operating mode, force cold wind to blow in from sealing utmost point post lower extreme admittedly, through leading-out terminal and the ventilation hole on the insulating arm of touching down, from insulating the port of touching the arm down and the logical groove of heat dissipation on the insulating arm lateral wall of touching down and overflowing, form good hot air current channel, solved and sealed the heat dissipation problem of utmost point post under the heavy current operating mode admittedly.

Description

High-current solid-sealed polar pole of high-voltage circuit breaker

Technical Field

The utility model relates to a high-voltage electrical technology field, concretely relates to high-voltage circuit breaker heavy current seals utmost point post admittedly.

Background

The solid-sealed polar pole is widely applied due to small appearance, good insulating property and strong environment adaptability. For a low-current circuit breaker, because the current of the low-current circuit breaker is small, the natural convection can meet the requirement of temperature rise. However, for a large-current circuit breaker, because the insulation requirement of a 40.5kV and other high-voltage circuit breakers is high, the distance from a moving end of an arc extinguish chamber to the ground is large (about 400 mm), natural convection cannot meet the heating problem, and forced air cooling is required for heat dissipation. At present, a large-current main loop in the industry still adopts the previous insulating cylinder type structure, the upper end and the lower end of a cylinder body are in an open structure, forced air is blown into the insulating cylinder from the lower end of the insulating cylinder and blown out from the upper end of the insulating cylinder after passing through the surface of an arc extinguish chamber, the heat dissipation problem is solved, and the large-current main loop is large in external dimension, low in insulating property and poor in antifouling effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high-voltage circuit breaker heavy current seals utmost point post admittedly, through the reasonable design wind channel, make and seal the inside strong refrigeration hot air circulating system that forms of utmost point post admittedly, possess stronger insulating properties, solved the heat dissipation problem that high-pressure heavy current seals utmost point post admittedly.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

the utility model provides a high-voltage circuit breaker heavy current seals utmost point post admittedly, includes the explosion chamber, and the upper end of explosion chamber is connected with last insulating arm of touching through last leading-out terminal, and the lower extreme of explosion chamber is connected with insulating arm of touching down through lower leading-out terminal, be equipped with the electrically conductive clamp that is connected with the moving end of explosion chamber in the inner chamber of leading-out terminal down, lower leading-out terminal and insulating linking arm center and the lower inner chamber of touching the arm of touching of insulating have seted up the ventilation hole that link up mutually.

Preferably, the side wall of the lower insulating contact arm is provided with a plurality of heat dissipation through grooves.

Preferably, the outer wall of the arc extinguish chamber is coated with a silicon rubber layer.

Preferably, an epoxy resin coating layer is poured on the connecting part of the arc extinguish chamber and the lower outlet end.

The utility model discloses when heavy current operating mode, force cold wind to blow in from sealing utmost point post lower extreme admittedly, through leading-out terminal and the ventilation hole on the insulating arm of touching down, from insulating the port of touching the arm down and the logical groove of heat dissipation on the insulating arm lateral wall of touching down and overflowing, form good hot air current channel, solved and sealed the heat dissipation problem of utmost point post under the heavy current operating mode admittedly.

The utility model discloses small in size, insulating properties is strong, and the radiating effect is good, is applicable to high-pressure heavy current operating mode.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the lower outlet terminal of FIG. 1;

fig. 3 is a schematic structural view of the lower insulated contact arm in fig. 1.

In the figure: 1. go up leading-out terminal, 2, explosion chamber, 3, silastic-layer, 4, epoxy coating, 5, lower leading-out terminal, 6, electrically conductive clamp, 7, go up insulating contact arm, 8, lower insulating contact arm, 9, ventilation hole, 10, heat dissipation logical groove.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

The high-current solid-sealed polar pole of the high-voltage circuit breaker shown in fig. 1 to 3 comprises an arc extinguish chamber 2, wherein the upper end of the arc extinguish chamber 2 is connected with an upper insulating contact arm 7 through an upper wire outlet end 1, the lower end of the arc extinguish chamber 2 is connected with a lower insulating contact arm 8 through a lower wire outlet end 5, a conductive clamp 6 connected with a movable end of the arc extinguish chamber 2 is arranged in an inner cavity of the lower wire outlet end 5, and a through ventilation hole 9 is formed in the center of a connecting arm of the lower wire outlet end 5 and the lower insulating contact arm 8 and in an inner cavity of the lower insulating contact arm 8. The side wall of the lower insulating contact arm 8 is provided with a plurality of heat dissipation through grooves 10.

The outer wall of the arc extinguish chamber 2 is coated with a silicon rubber layer 3. And an epoxy resin coating layer 4 is poured at the connecting part of the arc extinguish chamber 2 and the lower wire outlet end 5.

The utility model discloses when heavy current operating mode, force cold wind to blow in from solid utmost point post lower extreme that seals, through terminal 5 and the ventilation hole 9 on the insulating arm 8 of touching down, from insulating the port of touching arm 9 down and the logical groove 10 of heat dissipation on the insulating arm 9 lateral wall of touching down and overflowing, form good hot air current channel, solved the heat dissipation problem of solid utmost point post under the heavy current operating mode.

Claims

1. The utility model provides a high-voltage circuit breaker heavy current seals utmost point post admittedly, includes explosion chamber (2), and the upper end of explosion chamber (2) is connected with last insulating arm (7) of touching through last leading-out terminal (1), and the lower extreme of explosion chamber (2) is connected its characterized in that with lower insulating arm (8) of touching through lower leading-out terminal (5): the inner cavity of the lower wire outlet end (5) is provided with a conductive clamp (6) connected with the movable end of the arc extinguish chamber (2), and the centers of the connecting arm of the lower wire outlet end (5) and the lower insulating contact arm (8) and the inner cavity of the lower insulating contact arm (8) are provided with through ventilation holes (9).

2. The high-voltage circuit breaker large-current solid-sealed pole column according to claim 1, characterized in that: and the side wall of the lower insulating contact arm (8) is provided with a plurality of heat dissipation through grooves (10).

3. The high-voltage circuit breaker large-current solid-sealed pole column according to claim 1 or 2, characterized in that: the outer wall of the arc extinguish chamber (2) is coated with a silicon rubber layer (3).

4. The high-voltage circuit breaker large-current solid-sealed pole column according to claim 3, characterized in that: and an epoxy resin coating layer (4) is poured on the connecting part of the arc extinguish chamber (2) and the lower wire outlet end (5).