CN102157830B - Solid insulating bus connector - Google Patents

Abstract

The invention discloses a solid insulated busbar connector, which comprises a T-shaped insulating sleeve buried with a current conducting conductor, an insulating rubber sleeve, a conductive rod and a plug. In the present invention, a through hole is provided at one end of the energized conductor in the T-shaped insulating sleeve, a spring contact finger is arranged in the through hole of the energized conductor, and the flexibility of the insulating rubber sleeve is used, so that the cabinet body and the cabinet body can be assembled first. Then connect the busbars, which reduces the dimensional accuracy and installation requirements of the gas switchgear, and can effectively self-adaptively compensate and adjust the installation deviation that occurs during cabinet consolidation. The cabinet consolidation is simple, the busbar connection is convenient and reliable, and the insulation performance is good.

Description

A solid insulated busbar connector

technical field

The invention belongs to the technical field of electrical connection between gas insulated switchgears, and in particular relates to a solid insulated bus bar connector.

Background technique

During the design, installation and use of cabinet-type gas-insulated switchgear, the design of the electrical connection device between the cabinets has always been the focus of engineering personnel. It is necessary to ensure the electrical connection between two adjacent gas-insulated switchgears. reliability, while ensuring the insulation performance of the outer layer of the busbar and the interface. The insulating connection device is one of the most fault-prone links in the overall equipment, and its technical level directly affects the safety and stability of the overall equipment.

The Chinese patent with the application number 200620154311.4 discloses a connection structure used in the bus connection body of medium-voltage equipment. The technical solution is: first splice two cabinets to be connected and then insert the insulated bus from the top. This kind of connection structure generally requires the insulating bus bars of multiple adjacent cabinets to be strung together and then inserted at the same time, and then the insulating bus bars are tightened in sequence, which is inconvenient to install, and the flow capacity of this insulating bus bar should not be too large.

The Chinese patent with application number 200810198179.0 discloses a busbar connector rubber sleeve. Its technical solution is: first put three-phase conductive rods and busbar connection rubber sleeves between two cabinets to be connected, so that the busbar connector sleeves of the two cabinets After the center line of the pipe is aligned, the two cabinets are moved closer to each other and fastened. When the volume of the inflatable cabinet is large or the weight is heavy, it is difficult to move the cabinet, and it is difficult to align the center line of the busbar connection sleeve of the two cabinets. Smaller, it is difficult to fasten the insulated busbars.

The Chinese patent application number 01103046.1 discloses a bus connection device for a closed switchboard filled with insulating gas. It is necessary to align the centerlines of the busbar connection bushings of the two cabinets before making the two cabinets close to each other and fasten them. Therefore, this connection device and its connection method also have high requirements for the dimensional accuracy and installation of the inflatable cabinet. When the volume of the inflatable cabinet is large or the weight is heavy, it is difficult to move the cabinet. It is difficult to align the lines, and it is easy to cause bumping of the insulated busbars during cabinet assembly, and a slight deviation can easily lead to unreliable connections.

Contents of the invention

The invention provides a solid insulated busbar connector, which overcomes the defects of the above-mentioned insulated busbar connecting device, and makes the installation of insulated busbars between gas insulated switch cabinets simple, convenient and reliable.

The utility model relates to a solid insulated busbar connector, which is composed of a T-shaped insulating sleeve buried with a current-carrying conductor, an insulating rubber sleeve, a conductive rod and a plug.

One end of the energized conductor in the T-shaped insulating sleeve is provided with a through hole, and a plurality of contact fingers are arranged in the through hole; the other end of the energized conductor is arranged in the gas switch cabinet, and is connected to the gas switch The conductors in the cabinet are connected;

The T-shaped insulating sleeve is cast integrally with the energized conductor inside, and the nozzles at both ends of the T-shaped insulating sleeve communicate with the through holes of the energized conductor;

The sockets at both ends of the insulating rubber sleeve are respectively matched and connected with the nozzles of the T-shaped insulating bushings on two adjacent gas switch cabinets;

The conductive rod runs through the insulating rubber sleeve, and the two ends of the conductive rod are respectively in contact with the fingers in the through holes of the energized conductors in the T-shaped insulating sleeves on the two adjacent gas switchgears;

The plugs are used to block the nozzles of the T-shaped insulating bushings at both ends of several gas switch cabinets connected.

In a preferred technical solution, the contact fingers are spring contact fingers, which can compensate for installation deviations that occur when adjusting cabinet consolidation.

In a preferred technical solution, the insulating rubber sleeve is composed of an inner shielding layer, an outer shielding layer, and an insulating layer located between the inner and outer shielding layers, and the inner shielding layer and the outer shielding layer are made of semiconductor silicone rubber, and the overall Soft enough to compensate for installation deviations that occur when adjusting cabinets.

In the preferred technical solution, the nozzle of the T-shaped insulating sleeve is a bell mouth, and the shape of the sleeve of the insulating rubber sleeve matches the nozzle of the T-shaped insulating sleeve. The latter can be fixed with the connection, which can effectively ensure the interface insulation between the two.

In the preferred technical solution, a number of pressure plates are provided at the joint between the socket of the plug or the insulating rubber sleeve and the nozzle of the T-shaped insulating sleeve, and there are fastening bolts on the pressure plates, through which the pressure plates and The fastening bolts are fastened together to ensure the pressure between the T-shaped insulating sleeve and the end face of the insulating rubber sleeve and the reliability of the interface insulation.

In a preferred technical solution, there is an air gap between the conductive rod and the insulating rubber sleeve, so that the conductive rod can pass through the insulating rubber sleeve smoothly.

The beneficial technical effect of the present invention is:

(1) In the present invention, by setting a through hole at one end of the energized conductor in the T-shaped insulating sleeve, the cabinet body and the cabinet body can be assembled first, and then the connection of the busbar is carried out. The cabinet assembly is simple and the busbar connection is convenient.

(2) The present invention can effectively self-adaption compensate and adjust the installation deviation that occurs when combining cabinets by arranging spring contacts in the through holes of the energized conductors in the T-shaped insulating sleeve and utilizing the flexibility of the insulating rubber sleeve, reducing the The dimensional accuracy and installation requirements of the gas switchgear are specified.

(3) The mouth of the T-shaped insulating bushing of the present invention adopts a bell mouth to match the mouth of the insulating rubber sleeve, and is fastened by a pressure plate, which can effectively ensure the tightness between the T-shaped insulating sleeve and the end face of the insulating rubber sleeve. interface insulation.

Description of drawings

Fig. 1 is a schematic structural view of the solid insulated busbar connector of the present invention.

Detailed ways

In order to describe the present invention more specifically, the technical solution of the present invention and its installation process will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in FIG. 1 , a solid insulated busbar connector includes a T-shaped insulating sleeve 3 embedded with a live conductor 4 , an insulating rubber sleeve 6 , a conductive rod 9 and a plug 2 .

One end of the energized conductor 4 in the T-shaped insulating sleeve 3 is provided with a through hole, and six spring contact fingers 5 are arranged in the through hole; The conductors inside are connected;

The T-shaped insulating bushing 3 is cast in one body with the energized conductor 4 inside, the nozzles at both ends of the T-shaped insulating bushing 3 communicate with the through holes of the energized conductor 4, and the nozzle of the T-shaped insulating bushing 3 is a horn mouth;

The sockets at both ends of the insulating rubber sleeve 6 are matched and connected with the nozzles of the T-shaped insulating bushings 3 on two adjacent gas switch cabinets 1 respectively. Tighten the bolts 11; the insulating rubber sleeve 6 is composed of the inner shielding layer 8, the outer shielding layer 7 and the insulating layer between the inner and outer shielding layers, the inner shielding layer 8 and the outer shielding layer 7 are made of semiconductor silicone rubber;

The conductive rod 9 runs through the insulating rubber sleeve 6, and there is an air gap between the two; the two ends of the conductive rod 9 are respectively connected to the energized conductor 4 in the T-shaped insulating sleeve 3 on the two adjacent gas switch cabinets 1. The three spring contacts 5 in the through hole are in contact;

The plugs 2 are used to block the nozzles of the T-shaped insulating bushings 3 on both ends of several gas switchgear cabinets 1 connected. Two pressing plates 10 are arranged at the joints, and fastening bolts 11 are arranged on the pressing plates 10 .

The installation process of this embodiment is as follows: the T-shaped insulating bushing 3 is pre-installed on the gas switchgear 1, and the two gas switchgears 1 to be connected are first assembled and fastened, and the insulating rubber sleeve 6 is bent to insulate Put the sockets at both ends of the rubber sleeve 6 into the nozzles of the T-shaped insulating bushings 3 on the two gas switch cabinets 1 respectively, and then make the insulating rubber sleeve 6 straighten naturally, and the conductive rod 9 is insulated from any T-shaped The bushing 3 is inserted into the nozzle, so that the energized conductors 4 of the two gas switch cabinets 1 are connected to each other through the conductive rod 9, and then the pressure plate 10 is tightened by the fastening bolt 11 to insulate the sleeve of the insulating rubber sleeve 6 from the T shape. The bell mouth of the bushing 3 is compressed to complete the interface insulation between the T-shaped insulating bushing 3 and the end of the insulating rubber sleeve 6 . In this way, multiple gas switchgears 1 can be connected to each other. After the connection of the conductive rods 9 between all the gas switchgears 1 is completed, insert them into the bell mouths of the T-shaped insulating bushings 3 on the two gas switchgears 1 on the far side. Plug 2, and fasten the pressure plate 10 with fastening bolts 11 to make it compact.

Claims (4)

1. A solid insulated busbar connector, comprising a T-shaped insulating sleeve embedded with an energized conductor, an insulating rubber sleeve, a conductive rod and a plug, characterized in that: One end of the energized conductor in the T-shaped insulating sleeve is provided with a through hole, and a plurality of contact fingers are arranged in the through hole; the other end of the energized conductor is arranged in the gas switch cabinet, and is connected to the gas switch The conductors in the cabinet are connected; The T-shaped insulating sleeve is cast integrally with the energized conductor inside, and the nozzles at both ends of the T-shaped insulating sleeve communicate with the through holes of the energized conductor; The sockets at both ends of the insulating rubber sleeve are respectively matched and connected with the nozzles of the T-shaped insulating bushings on two adjacent gas switch cabinets; The mouth of the T-shaped insulating sleeve is a bell mouth, and the shape of the mouth of the insulating rubber sleeve matches the mouth of the T-shaped insulating sleeve; The insulating rubber sleeve is composed of an inner shielding layer, an outer shielding layer and an insulating layer located between the inner and outer shielding layers, and the inner shielding layer and the outer shielding layer are made of semiconductor silicone rubber; The conductive rod runs through the insulating rubber sleeve, and the two ends of the conductive rod are respectively in contact with the fingers in the through holes of the energized conductors in the T-shaped insulating sleeves on the two adjacent gas switchgears; The plugs are used to block the nozzles of the T-shaped insulating bushings at both ends of several gas switch cabinets connected. 2. The solid insulated busbar connector according to claim 1, characterized in that: said contact fingers are spring contact fingers. 3. The solid insulated busbar connector according to claim 1, characterized in that: there are several joints between the opening of the plug or the insulating rubber sleeve and the opening of the T-shaped insulating sleeve. The pressing plate is provided with fastening bolts. 4. The solid insulated busbar connector according to claim 1, characterized in that there is an air gap between the conductive rod and the insulating rubber sleeve.

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