CN102723672B - Three-station switch cabinet and bus connecting structure thereof - Google Patents

Abstract

The invention relates to a three-station switch cabinet and a bus connecting structure thereof, and the bus connecting structure comprises a bus connector which is provided with a leading-in end and a leading-out end, the leading-out end of the bus connector is provided with a conductive rod, one end of the conductive rod, which is away from the bus connector, is provided with a conducting plug which is used for being plugged and electrically connected with a conductive jack of the bus connector of an adaptive distribution cabinet body, the leading-in end of the bus connector is provided with a conductive socket, and the conductive socket is provided with a conductive jack which is used for being plugged and electrically connected with the conductive plug of the bus connector of the adaptive distribution cabinet body. The bus connecting structure is simple in structure and convenient for connection.

Description

A three-position switch cabinet and its bus connection structure

technical field

The invention relates to a gas insulated switchgear, in particular to a three-position switchgear and its bus connection structure.

Background technique

Existing air cabinets and inflatable cabinets are collectively referred to as switch cabinets. Both air cabinets and inflatable cabinets include a cabinet body. The cabinet is insulated and equipped with a busbar connector. The busbar connector has an incoming line end and an outgoing line end. Because of the actual needs of some power distribution schemes, sometimes the scheme of connecting the air cabinets in a group of inflatable cabinets is adopted. Because the structures of the two switch cabinets are different, it is necessary to connect the cabinets between the inflatable cabinets and the air cabinets. Consider setting up targeted linkage mechanisms. Existing connection mechanisms such as "a connection mechanism between an inflatable cabinet and an air cabinet" disclosed in Chinese patent CN201278441Y, the connection mechanism includes the connection surface of the inflatable cabinet, the connection surface of the air cabinet and a connecting piece, and the connection surface of the gas cabinet is provided with a The busbar connector bushing matched with the busbar connector of the inflatable cabinet, and the air cabinet busbar connector bushing used for matching with the busbar connector of the air cabinet is arranged on the connecting piece. Although the connection between the inflatable cabinet and the air cabinet can be realized by using this connection mechanism, the structure of the connection mechanism is complicated, the production cost is high, and more operation steps are required during the connection; at the same time, the connection structure also increases the number of components of the entire cabinet body. occupied space.

Contents of the invention

The purpose of the present invention is to provide a bus bar connection structure with simple structure and convenient connection; the purpose of the present invention is also to provide a three-position switchgear using the above bus bar connection structure.

In order to solve the above problems, the technical scheme of the bus connection structure in the present invention is:

The busbar connection structure includes a busbar connector with an incoming line end and an outgoing line end, the outgoing line end of the busbar connector is provided with a conductive rod, and the end of the conductive rod away from the busbar connector is provided with a The conductive socket of the busbar connector is inserted into the electrically connected conductive plug, and the incoming end of the busbar connector is provided with a conductive socket, and the conductive socket is provided with a socket for matching with the busbar connector of the corresponding cabinet. The conductive plug is inserted into the conductive socket of the electrical connection.

The conductive rod is made of aluminum material, and the conductive rod is fixedly electrically connected to the outlet end of the busbar connector through a bolt connection structure.

The conductive socket is composed of a contact seat fixed to the incoming line end of the busbar connector through a corresponding bolt connection structure, and a connection hole is opened in the contact seat, and the conductive socket is formed by the connection hole .

The hole wall of the connection hole is provided with a conductive ring for contacting and electrically connecting with the conductive plug of the corresponding matching busbar connector to realize the electrical connection between the busbar connector and the corresponding matching busbar connector.

The conductive ring is a spring finger type conductive ring.

The busbar connection structure also includes an elbow whose head end is connected to the inlet end of the busbar connector and whose tail end is bent to the right side of the busbar connector. The conductive socket is arranged at the inlet end bend The tail end of the head; the busbar connection structure also includes a head end connected to the outlet end of the busbar connector, and an outlet end elbow whose tail end is bent to the left side of the busbar connector. The conductive rod is arranged on the The tail end of the outlet elbow.

The bottom of the outlet elbow is provided with an isolated static contact for use in conjunction with a corresponding isolated movable contact.

The technical scheme of the three-station switch cabinet in the present invention is:

Three-position switchgear, including a cabinet body and a busbar connector with an incoming line end and an outgoing line end installed insulated therein, the outgoing line end of the busbar connector is provided with a conductive rod protruding from the inside of the cabinet to the outside of the cabinet, and the conductive The end of the bar away from the busbar connector is provided with a conductive plug for electrical connection with the conductive socket of the busbar connector of the corresponding adapted cabinet body, and the incoming end of the busbar connector is provided with a conductive socket. The conductive socket is provided with a conductive jack for plugging and electrically connecting with the conductive plug of the busbar connector of the corresponding matching cabinet.

The busbar connection structure also includes an elbow whose head end is connected to the inlet end of the busbar connector and whose tail end is bent to the right side of the busbar connector. The conductive socket is arranged at the inlet end bend The tail end of the head; the busbar connection structure also includes a head end connected to the outlet end of the busbar connector, and an outlet end elbow whose tail end is bent to the left side of the busbar connector. The conductive rod is arranged on the The tail end of the outlet elbow.

The bottom of the outlet elbow is provided with an isolated static contact, and the cabinet is provided with a grounding contact below the inlet elbow, and the cabinet is also insulated and equipped with Select the isolated moving contact that contacts and closes with the isolated static contact or the ground contact.

The beneficial effects of the present invention are: when two switch cabinets need to be connected in parallel, it is only necessary to connect the conductive plug of one of the switch cabinets to the conductive jack of the matching switch cabinet, and the connection is simple and convenient, and no Setting other connection structures also reduces the cost of the switchgear.

Using the conductive rod of the inflatable cabinet instead of the corresponding copper bar to realize the electrical connection also saves the amount of copper and reduces the product cost.

Further, by setting a left-curved outlet end elbow at the outlet end of the bus connector, and a right-curved inlet end elbow at the inlet end of the bus connector, by rationally arranging conductive rods, conductive sockets and isolating The position of the static contact reduces the volume of a single switch cabinet, and also reduces the span when multiple switch cabinets are combined.

Description of drawings

Fig. 1 is a schematic structural view of a switchgear embodiment in the present invention, and it is also a use state diagram of a bus bar connection structure in the present invention;

Fig. 2 is a schematic structural view of two switch cabinets in the present invention when they are combined. the

Detailed ways

The embodiment of the switch cabinet is shown in Figures 1 and 2: the switch cabinet 1 includes a cabinet body 2 and a busbar connector 13 that is insulated from the cabinet body 2 through a disc insulator 14. The busbar connector 13 has an incoming line end and an outgoing line end, and the busbar The outlet end of the connector 13 is provided with an outlet end elbow whose head end is connected to the busbar connector 13 and whose tail end is bent to the left side of the busbar connector 13. The tail end of the outlet elbow is fixedly connected to the aluminum conductive rod 4 through the bolt connection structure 3, and the end of the conductive rod 4 away from the bus connector 13 is provided with a conductive connection with the bus connector of the corresponding matching cabinet 17. The socket is plugged with an electrically connected conductive plug 5 . The incoming line end of the busbar connector 13 is provided with an incoming line end elbow whose head end is connected to the busbar connector 13 and whose tail end is bent to the right side of the busbar connector 13. The incoming line end elbow is fixedly connected to the busbar connector by bolts. Composed of folded plates, the end of the elbow at the incoming line end is fixed with a contact seat 12 that is electrically connected to the busbar connector 13 through bolts. There is a connection hole in the contact seat 12, and the connection hole constitutes a connection with The conductive plug corresponding to the busbar connector is plugged into the conductive socket 11 of the electrical connection. There is an annular installation groove on the groove wall of the connection hole, and a spring finger-type conductive ring 10 is installed in the annular installation groove. The conductive ring 10 is used. In contact with the outlet end of the corresponding adapter busbar connector for electrical connection. The cabinet body 2 is also insulated and equipped with an isolated movable contact 7 through an eccentric insulator 8, an isolated static contact 6 is provided at the bottom of the elbow at the outgoing line end, and a grounding contact 9 is provided on the cabinet body 2 below the elbow at the incoming line end. The isolated movable contact 7 can be closed with the isolated static contact 6 or the ground contact 9 as required.

The above switch cabinet 1 is an inflatable cabinet, which is connected to the adapter cabinet 17 by using the conductive rod 4. The adapter cabinet 17 can be an air cabinet or an inflatable cabinet. It is convenient for on-site assembly and production Low cost and high assembly efficiency. At the same time, the aluminum conductive rod 4 also saves the amount of copper. According to the test, it can save 57% of the copper consumption, which further reduces the production cost; the spring finger-type conductive ring 10 ensures The electric connection effect. Both the elbow at the incoming line end and the elbow at the outgoing line end are composed of corresponding folded plates, which are detachably connected to the busbar connector 13 by bolts. The connection is reliable and the assembly, disassembly and maintenance are very convenient. In this example, the conductive ring can also be replaced by an ordinary conductive ring without radial deformation, or directly use the groove wall of the connection hole for contact conduction; the switch cabinet can also be an air cabinet. The connection between the inflatable cabinet and the inflatable cabinet and between the inflatable cabinet and the air cabinet can be realized conveniently through the plug-in form.

When in use, as shown in Figure 2: an adapter conductive rod 15 is provided in the adapter cabinet body 17 (inflatable cabinet or air cabinet body), and an adapter rod 15 is provided on the adapter rod 15 for plugging and electrically connecting with the conductive jack 11. The matching conductive plug 16. When assembling the cabinets on site, directly connect the matching conductive plug 16 to the conductive jack 11 of the switch cabinet 1 to realize the connection between the switch cabinet 1 and the matching cabinet body 17, which is simple Convenient. The present invention can be used for 35kv air cabinets and air-filled cabinets.

The embodiment of the busbar connection structure is shown in FIG. 1 : the specific structure of the busbar connection structure is the busbar connection structure described in the above three-position switch embodiment, and will not be described in detail here.

Claims (8)

1. bus connection structure, comprise the bus tie with end of incoming cables and leading-out terminal, it is characterized in that: the leading-out terminal of described bus tie is provided with conducting rod, described conducting rod is provided with the conductive plug of pegging graft and being electrically connected for the conductive jack of the bus tie with corresponding adaptive cabinet away from one end of described bus tie, the end of incoming cables of described bus tie is provided with electrically conductive socket, described electrically conductive socket is provided with the conductive jack of pegging graft and being electrically connected for the conductive plug of the bus tie with corresponding adaptive cabinet, described bus connection structure also comprises that head end is connected with the end of incoming cables of described bus tie, tail end bends towards the end of incoming cables elbow on bus tie right side, described electrically conductive socket is arranged at the tail end of described end of incoming cables elbow, described bus connection structure also comprises the leading-out terminal elbow that head end is connected with the leading-out terminal of described bus tie, tail end bends towards bus tie left side, described conducting rod is arranged at the tail end of described leading-out terminal elbow, while needing two switch cabinet combinings to connect, the conductive jack of the conductive plug of one of them switch cubicle and adaptive switch cubicle is pegged graft and is electrically connected.

2. bus connection structure according to claim 1, is characterized in that: described conducting rod is made by aluminum material, and the leading-out terminal that conducting rod is bolted structure and described bus tie is fixedly electrically connected.

3. bus connection structure according to claim 1 and 2, it is characterized in that: described electrically conductive socket consists of the contact base that is fixed on the end of incoming cables of bus tie by respective bolt syndeton, in described contact base, offer connecting hole, described conductive jack consists of described connecting hole.

4. bus connection structure according to claim 3, is characterized in that: the hole wall of described connecting hole is provided with for contacting with the conductive plug of corresponding adaptive bus tie and is electrically connected and realizes the conducting ring that described bus tie and corresponding adaptive bus tie are electrically connected.

5. bus connection structure according to claim 4, is characterized in that: described conducting ring is the conducting ring of a spring touch finger type.

6. bus connection structure according to claim 1, is characterized in that: the bottom of described leading-out terminal elbow is provided with the isolation fixed contact for being used in conjunction with corresponding isolation moving contact.

7. three-station cabinet, comprise cabinet and the bus tie with end of incoming cables and leading-out terminal that wherein insulation is assembled, it is characterized in that: the leading-out terminal of described bus tie is provided with by the conducting rod stretching out outside cabinet in cabinet, described conducting rod is provided with the conductive plug of pegging graft and being electrically connected for the conductive jack of the bus tie with corresponding adaptive cabinet away from one end of described bus tie, the end of incoming cables of described bus tie is provided with electrically conductive socket, described electrically conductive socket is provided with the conductive jack of pegging graft and being electrically connected for the conductive plug of the bus tie with corresponding adaptive cabinet, described bus connection structure also comprises that head end is connected with the end of incoming cables of described bus tie, tail end bends towards the end of incoming cables elbow on bus tie right side, described electrically conductive socket is arranged at the tail end of described end of incoming cables elbow, described bus connection structure also comprises the leading-out terminal elbow that head end is connected with the leading-out terminal of described bus tie, tail end bends towards bus tie left side, described conducting rod is arranged at the tail end of described leading-out terminal elbow, while needing two switch cabinet combinings to connect, the conductive jack of the conductive plug of one of them switch cubicle and adaptive switch cubicle is pegged graft and is electrically connected.

8. three-station cabinet according to claim 7, it is characterized in that: the bottom of described leading-out terminal elbow is provided with isolation fixed contact, on described cabinet, in the below of described end of incoming cables elbow, be provided with grounding contact, on described cabinet, also insulation is equipped with and can selects as required to contact with described isolation fixed contact or grounding contact the isolation moving contact closing a floodgate.