CN218384988U - Take rotation type switch structure's cabinet of aerifing - Google Patents

Abstract

The utility model discloses an inflatable cabinet with a rotary switch structure, wherein a main shaft hole for installing a rotary main shaft is arranged on a solid-sealed polar pole, and an insulating pull rod is arranged in an insulating body and a vacuum arc extinguish chamber side by side; after the scheme is adopted, the utility model discloses utilize the rotary operation of utmost point post, be equivalent to utmost point post as isolator's switch, realized tribit isolation earthing switch's function, owing to saved isolator, place vacuum interrupter and insulating pull rod side by side simultaneously, seal the utmost point post and highly practice thrift the third admittedly, so whole aerify the cabinet volume and accomplish very little.

Description

Take rotation type switch structure's cabinet of aerifing

Technical Field

The utility model relates to an electrical equipment refers in particular to an inflatable cabinet.

Background

At present, most of the solid-sealed polar columns with common structures are adopted at home and abroad as alternate insulating media of vacuum arc-extinguishing chambers in the inflatable cabinet, the occupied space of the inflatable cabinet is large, and if the size of the inflatable cabinet is reduced, an electric field in the cabinet body is overlarge, the distribution of the electric field is concentrated, flashover, corona and the like are easy to occur, so that the performance and the service life of the inflatable cabinet are reduced; the problem of temperature rise is also a great problem which puzzles the gas-filled cabinet, the insulation performance of the gas-filled cabinet is influenced by the temperature rise, and the breaking capacity of the vacuum arc-extinguishing chamber is reduced; the sealing problem is another difficult problem for the gas-filled cabinet, and if the sealing effect is not good, sulfur hexafluoride gas leakage can cause environmental pollution and gas-filled cabinet failure or even circuit failure. .

Chinese patent CN 101770892B relates to an annular rotary pole type vacuum switch, in which an incoming line static contact, an outgoing line static contact and a grounding static contact are distributed on an annular insulating frame, a rotary fulcrum of a rotary pole is arranged at an annular center of the annular insulating frame and rotates along an annular ring of the annular insulating frame, the rotary pole is composed of a vacuum arc-extinguishing chamber and a copper conductor connected with the vacuum arc-extinguishing chamber, moving contacts are respectively arranged at ends of the rotary pole, and two moving contacts of the rotary pole are respectively inserted into the incoming line static contact, the outgoing line static contact and the grounding static contact on the annular insulating frame during the rotation of the rotary pole. Although this structure has used the rotatory utmost point post that has vacuum interrupter to rotate to the corresponding cooperation of closing with closing or breaking of different positions with the explosion chamber, nevertheless because rotatory utmost point post adopts the V-arrangement, the direct copper conductor that links to each other of vacuum interrupter, electric clearance and creepage distance are not enough, and the explosion chamber moves the end and has the risk of backward power transmission when separating brake, if have backward power transmission, and explosion chamber moves end and screw thread conflict cover electrified, and is not enough to ground because of insulation distance, has the potential safety hazard.

Disclosure of Invention

The utility model provides a small-size, do not use solitary isolator, safe and reliable's cabinet of aerifing of taking rotary switch structure.

In order to achieve the above purpose, the utility model relates to an inflatable cabinet with rotary switch structure, which comprises an inflatable chamber and a breaker arranged outside the inflatable chamber, wherein a wire inlet sleeve is arranged above the outside of the inflatable chamber, a wire outlet sleeve is arranged below the outside of the inflatable chamber, an upper tool bit arranged on an upper tool bit insulating support, a solid-sealed polar pole and a lower tool bit arranged on a lower tool bit insulating support are arranged in the inflatable chamber, a vacuum arc extinguish chamber and an insulating pull rod are arranged in an insulating body of the solid-sealed polar pole, wherein a main shaft hole for installing a rotating main shaft is arranged on the solid-sealed polar pole, an upper conductive contact is extended out of the vacuum arc extinguish chamber to the upper part of the insulating body, and the end part of the upper conductive contact is provided with at least two pairs of upper conductive contact fingers which are oppositely arranged; the lower part of the vacuum arc extinguish chamber is provided with a movable conducting rod which is in flexible connection with a lower conducting contact arranged on the outer side below the insulating body to realize conduction; an insulating pull rod is arranged in the insulating body and the vacuum arc extinguish chamber side by side, a conductive rod at the lower part of the vacuum arc extinguish chamber is connected with the lower part of the insulating pull rod through a transmission lever, and a connector at the upper end of the insulating pull rod extends out of the insulating body and is clamped on the small reversing mechanism to be connected with the rotating main shaft; and the upper part of the plenum chamber is transversely provided with a grounding copper bar, and a tool bit of the grounding copper bar on the grounding copper bar can be inserted into the conductive contact on the solid-sealed polar pole in a grounding state.

After the scheme is adopted, the utility model discloses utilize the rotary operation of utmost point post, be equivalent to utmost point post as isolator's switch, realized tribit isolation earthing switch's function, owing to saved isolator, place vacuum interrupter and insulating pull rod side by side simultaneously, seal the utmost point post and highly practice thrift the third admittedly, so whole aerify the cabinet volume and accomplish very little.

Drawings

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

fig. 2 is a schematic view of the pole structure of the present invention;

fig. 3 is a sectional view of the pole structure of the present invention;

fig. 4 is a schematic diagram of the structure of the grounding state of the present invention.

Description of the reference symbols:

1. a circuit breaker mechanism; 2. a plenum chamber; 3. the upper tool bit is supported in an insulating way; 4. an upper cutter head; 5. solid sealing the pole; 51. an insulating body; 52. an upper conductive contact; 521. an upper conductive contact finger; 53. an insulating pull rod; 53. an insulated pull rod connector; 54. a lower conductive contact; 541. a lower conductive contact finger; 55. a spindle hole; 56 a small reversing mechanism; 57. vacuum arc-extinguishing chamber 58, soft connection; 59. a transmission lever; 6, a main shaft; 7. an upper cutter head; 8. the upper tool bit is supported in an insulating way; 9. a ground copper bar; 91. the ground copper bar tool bit.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

As shown in fig. 1, the utility model relates to an inflatable cabinet with rotary switch structure, plenum chamber 2 is equipped with and circuit breaker 1 (other structures are not related to the present case and are not marked), plenum chamber 2 is equipped with the inlet wire sleeve pipe above the outside, plenum chamber outside is equipped with the wire sleeve pipe, be equipped with in plenum chamber 2 and establish the upper knife head 4 that establishes in upper knife head insulating support 3 and establish in the lower knife head insulating support 8 lower knife head 7, as shown in fig. 2, 3, gu seal utmost point post 5 erects on rotating spindle 6 through spindle hole 55, vacuum interrupter 57 that establishes in gu seal utmost point post 5 insulator 51 stretches out upper conductive contact 52 to insulator 51 top, upper conductive contact 52 tip is equipped with at least two pairs of upper conductive contact fingers 521 that set up relatively; the lower part of the vacuum arc extinguish chamber 57 is provided with a movable conducting rod which is electrically connected with a lower conductive contact 54 arranged at the lower outer side of the insulating body 51 through a flexible connection 58; an insulating pull rod 53 is arranged in the insulating body 51 and the vacuum arc-extinguishing chamber 57 in parallel, a conductive rod at the lower part of the vacuum arc-extinguishing chamber 57 is connected below the insulating pull rod 53 through a transmission lever 59, and a connector 531 at the upper end of the insulating pull rod 53 extends outside the insulating body 51 and is clamped on the small reversing mechanism 56 to be connected with the rotating main shaft; the connector 531 at the upper end of the insulating pull rod 53 can move up and down under the clamping of the small reversing mechanism 56 (linked with the main shaft). An earth copper bar 9 is transversely arranged at the upper part of the plenum chamber 2, and as shown in fig. 4, an earth copper bar cutter head on the earth copper bar 9 can be inserted on the conductive contact on the solid-sealed polar pole in an earth state.

Because insulating pull rod is important component part among the switch utmost point post, insulating pull rod mainly plays high pressure (main electric component, support, transmission connecting lever and connecting rod etc.) and the insulating effect between ground (insulator erection frame and mounting bolt head) to will guarantee that the switch divides, closes safe electric clearance and the creepage distance of high pressure to ground under two states, the utility model discloses change insulating pull rod into and vacuum interrupter side by side, will seal utmost point post can form three stations with last tool bit, lower tool bit, ground connection copper bar respectively under the rotatory main shaft drives admittedly and be connected, its control mechanism should be field knowledge.

The above-mentioned only be the embodiment of the present invention, not consequently the restriction of the patent scope of the present invention, all utilize the equivalent shape or the structure transform made of the content of the specification and the attached drawings, or directly or indirectly use in other relevant technical fields, all including in the same way the patent protection scope of the present invention.

Claims (1)

1. The utility model provides a take rotation type switch structure aerify cabinet, includes the plenum chamber and establishes at the outdoor circuit breaker of plenum chamber, is equipped with the inlet wire sleeve pipe in plenum chamber outside top, is equipped with the wire sleeve pipe in plenum chamber outside below, is equipped with the last tool bit of establishing tool bit insulating support in the plenum chamber, seals utmost point post admittedly and establishes the lower tool bit at tool bit insulating support down, is equipped with vacuum interrupter and insulating pull rod, its characterized in that in the insulator that seals utmost point post admittedly: a main shaft hole for installing a rotating main shaft is formed in the solid-sealed polar pole, an upper conductive contact extends out of the vacuum arc extinguish chamber towards the upper part of the insulating body, and at least two pairs of upper conductive contact fingers which are oppositely arranged are arranged at the end part of the upper conductive contact; the lower part of the vacuum arc extinguish chamber is provided with a movable conducting rod which is in flexible connection with a lower conducting contact arranged on the outer side below the insulating body to realize conduction; an insulating pull rod is arranged in the insulating body side by side with the vacuum arc extinguish chamber, the lower part of the insulating pull rod is connected with a conducting rod at the lower part of the vacuum arc extinguish chamber through a transmission lever, and a connector at the upper end of the insulating pull rod extends outside the insulating body and is clamped on the small reversing mechanism to be connected with the rotating main shaft; and the upper part of the plenum chamber is transversely provided with a grounding copper bar, and a tool bit of the grounding copper bar on the grounding copper bar can be inserted into the conductive contact on the solid-sealed polar pole in a grounding state.

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