CN2593432Y

CN2593432Y - Cable or bus connection apparatus for high-voltage switch cubicle

Info

Publication number: CN2593432Y
Application number: CN 02250276
Authority: CN
Inventors: 王平; 吴春玲; 曾宪灿; 陈朝晖
Original assignee: Guangdong Changyuan Cable Accessory Co ltd
Current assignee: Guangdong GCA Cable Accessory Co., Ltd.
Priority date: 2002-12-13
Filing date: 2002-12-13
Publication date: 2003-12-17
Anticipated expiration: 2012-12-13

Abstract

The utility model relates to a cable or bus connection apparatus for a high-voltage switch cubicle. The utility model is provided with an insulator (5) and a stress cone (1), wherein, a horn-shaped conical surface (1a) at the front port of the stress cone (1) is embedded in the side wall of the insulator (5); a conductive terminal (6) is inserted in the insulator (5); a rear part of the conductive terminal (6) is provided with a wire core cavity (6a) which passes through both ends of a screw bolt (9) and are in respective screw connection with a blanking cover (8) and a metallic conductive column (12). The exterior of the metallic conductive column (12) is sheathed with an insulating casing tube (11) which is inserted into the insulator (5) through a conical surface (11a) on the exterior wall; a high-voltage shielding sheath (10) is embedded in a front part of the insulator (5). The utility model has the advantages of favorable insulation shielding performance, simple structure, small size and convenient installation.

Description

The cable of high-tension switch cabinet or bus connecting device

Technical field

The utility model belongs to a kind of HV cable accessories that gases at high pressure insulated metal closed switch cabinet is connected with cable or bus that is used for.

Background technology

Traditional 26/35KV air switch cabinet is because of adopting the air insulation volume very big, development along with electric utility, a lot of these kind equipments of industry requirement are realized miniaturization, the gas-insulated metal-enclosed switchgear of SF6 can satisfy the requirement of this miniaturization, the thing followed is to realize that bus is realized being electrically connected between this class high-tension switch cabinet and cable or cabinet with the cable connecting arrangement that is fit to its installing space, and this class jockey in use may cause the concentrated electrical discharge that causes of electric stress because of the electric field distortion that high-tension electricity produces at the position of exhuming, so reliable electric field controls and insulation property must be arranged, at present domestic this class device that yet there are no.

Summary of the invention

The technical problems to be solved in the utility model provides and a kind ofly can make that distortion electric field is tending towards evenly, the cable or the bus connecting device of the high-tension switch cabinet that can be applicable to gas-insulated metal enclosed switchgear cabinets such as 26/35KV of good insulation preformance.

The technical scheme that addresses the above problem is (referring to implementing illustration): the utility model is provided with and is enclosed within the terminal insulator (5) of cable (3), it is characterized in that: also be provided with the stress cone (1) with semiconductive material made of face contact sleeve on cable (3), stress cone inwall front port is the tubaeform conical surface (1a) that internal diameter enlarges forward, tubaeform conical surface body is imbedded in the sidewall at insulator rear portion, the insulator outer wall is provided with the screen (2) that electric conducting material is made, the insulator front portion is inserted with conducting terminal (6), core chamber (6a) that the conducting terminal rear portion is provided with and insulator inner chamber vertical communication, bolt (9) one ends that pass the conducting terminal front portion are threaded with the blanking cover (8) that embeds insulator, the other end is threaded with metallic conduction post (12), the metallic conduction post is electrically connected with conducting terminal, the metallic conduction post is with insulating sleeve (11) outward, insulating sleeve is connected with its face contact by the conical surface (11a) the insertion insulator (5) of outer wall, and the insulator front portion is embedded with and is enclosed within the high-tension shielding cover (10) that conducting terminal is outer and be electrically connected with terminal.

Using method of the present utility model is: core (3a) exhumes out the cable end piece front portion earlier, one section cable insulation (3b) exhumes out at the cable core rear portion, make the two reliable electrical connection with also clamping in the core chamber of core (3a) insertion conducting terminal (6), then conducting terminal is passed in the housing of stress cone insertion insulator front portion, the cable outer shielding layer (3c) that makes the rear portion and the line of demarcation of cable insulation (3b) are positioned at the tubaeform conical surface position of stress cone, stress cone contacts electrical connection with cable external shield aspect, screen (2) ground connection that insulator is outer, the conical surface (11a) with insulating sleeve (11) inserts in the corresponding bellmouth of insulator (5) then, and tight a bolt (9) make metallic conduction post (12), strain between conducting terminal (6) and blanking cover (8) three, thereby the tight face contact of insulating sleeve (11) and blanking cover (8) and insulator (5) is connected, improve the insulation property at this position, and conducting terminal (6) reliably is electrically connected with metallic conduction post (12).The tubaeform conical surface (1a) of the stress cone inwall front port that the utility model is provided with and high-tension shielding cover (10) can make the Electric Field Distribution in the insulator be tending towards evenly satisfying the requirement of electrical strength.Insulating sleeve (11) is passed switch cubicle (14) can be electrically connected by the electric component that conductive pole in the sleeve pipe (12) and cabinet is interior.

The utility model can make the terminal distortion electric field that produces of high-tension cable be tending towards evenly, and the overall structure good insulation preformance can satisfy the electrical strength requirement that 26/35KV gas-insulated metal enclosed switchgear cabinet is connected with cable or bus, and volume is little, is convenient to install.

Description of drawings

Fig. 1, the utility model embodiment 1 structural representation

Fig. 2, the utility model embodiment 2 structural representations

1-stress cone 1a-is tubaeform conical surface 2-screen 3-cable 3a-core 3b-cable insulation

3c-cable outer shielding layer 5-insulator 6-terminal 6a-core chamber 7-sealing cap 8-blanking cover 9-bolt

10-housing 11-insulating sleeve 12-conductive pole 13-gas-insulated chamber 14-switch cubicle

15-four-way connector 16-bus

Specific embodiments

Embodiment 1 (Fig. 1)

This example is a kind of cable terminal connector that uses when cable 3 is electrically connected with SF6 gas insulation switch cabinet 14 inner parts.

Stress cone 1 usefulness semiconductive silicon rubber is made, face is enclosed within on the cable outer shielding layer 3c contiguously, be electrically connected with outer shielding layer, the tubaeform conical surface 1a of its inwall front port is the surfaces of revolution around insulator longitudinal center axis, and the rotation bus is made up of the camber line that slyness connects.

Insulator 5 is made by the electrically insulating silicone rubber material, the tubaeform conical surface 1a of stress cone imbeds in the sidewall at insulator rear portion, the insulator outer wall is provided with the screen 2 that electric conducting material is made, the insulator front portion vertically is inserted with conducting terminal 6, core chamber 6a and insulator inner chamber vertical communication and central axes that the terminal rear portion is provided with.

Bolt 9 is horizontally through conducting terminal 6 front portions, one side is screwed into the end face of horizontal metallic conduction post 12, and make metallic conduction styletable face be adjacent to the conducting terminal face, make the two reliable electrical connection, opposite side is screwed into the blanking cover 8 that inserts in the insulator, blanking cover 8 electrically insulating silicone rubber material, the conical surface by its outer wall inserts in the insulator 5 corresponding bellmouths, be connected with the contact of insulation dignity, the sealing cap 7 that semiconductive material is made is equipped with in blanking cover 8 outer ends, and this structure is convenient to the installation and the sealing of connector.

The metallic conduction post is with insulating sleeve 11 outward, and the conical surface 11a that the insulating sleeve outer wall is provided with inserts insulator 5 and contacts with its face and be connected, and when tighting a bolt 9 the time, insulating sleeve can reliably be connected with insulator by the conical surface.

Imbed insulator 5 and be enclosed within conducting terminal 6 outer high-tension shielding cover 10 usefulness semiconductive silastic materials and make, be to pass through mutually and combine by being mutually 90 degree around conducting terminal 6 central axis and two rotary bodies around insulating sleeve 11 central axis respectively, the rotation bus of rotary body outside wall surface is made up of the camber line that slyness connects.

Embodiment 2

This example is the four-way connector that a kind of 26/35KV of being used for gas-insulated metal enclosed switchgear cabinet 14 is electrically connected with connection bus between cabinet 16.

See that four-way connector 15 shown in Figure 2 is to combine with the essentially identical unit of embodiment 1 structure jockey by two, the insulator 5 of two unit jockeys, stress cone 1, conducting terminal 6 symmetric arrays, the insulator 5 and the conducting terminal 6 of two unit are connected as a single entity respectively, and a shared bolt 9, insulating sleeve 11, metallic conduction post 12 and blanking cover 8, thereby form two ports that are electrically connected with the bus core and a termination that is electrically connected with gas-insulated closed switch cabinet inner part.

Claims

1, the cable of high-tension switch cabinet or bus connecting device, be provided with and be enclosed within the terminal insulator (5) of cable (3), it is characterized in that: also be provided with the stress cone (1) with semiconductive material made of face contact sleeve on cable (3), stress cone inwall front port is the tubaeform conical surface (1a) that internal diameter enlarges forward, tubaeform conical surface body is imbedded in the sidewall at insulator rear portion, the insulator outer wall is provided with the screen (2) that electric conducting material is made, the insulator front portion is inserted with conducting terminal (6), core chamber (6a) that the conducting terminal rear portion is provided with and insulator inner chamber vertical communication, bolt (9) one ends that pass the conducting terminal front portion are threaded with the blanking cover (8) that inserts insulator, the other end is threaded with metallic conduction post (12), the metallic conduction post is electrically connected with conducting terminal, the metallic conduction post is with insulating sleeve (11) outward, insulating sleeve is connected with its face contact by the conical surface (11a) the insertion insulator (5) of outer wall, and the insulator front portion is embedded with and is enclosed within the high-tension shielding cover (10) that conducting terminal is outer and be electrically connected with terminal.

2, the cable of high-tension switch cabinet according to claim 1 or bus connecting device, it is characterized in that: described blanking cover (8) inserts in the corresponding bellmouth of insulator (5) by the conical surface of its outer wall, be connected with the contact of insulation dignity, the sealing cap (7) that semiconductive material is made is equipped with in blanking cover (8) outer end.

3, the cable of high-tension switch cabinet according to claim 1 and 2 or bus connecting device, it is characterized in that: described high-tension shielding cover (10) is to pass through mutually and combine by being mutually 90 degree around conducting terminal (6) central axis and two rotary bodies around insulating sleeve (11) central axis respectively, and the rotation bus of rotary body outside wall surface is made up of the camber line that slyness connects.

4, the cable of high-tension switch cabinet according to claim 1 and 2 or bus connecting device, it is characterized in that: combine by two unit jockeys, two unit connect insulator (5), stress cone (1), conducting terminal (6) symmetric arrays of device, insulator of two unit (5) and conducting terminal (6) are connected as a single entity respectively, and a shared bolt (9), insulating sleeve (11), metallic conduction post (12) and blanking cover (8).

5, the cable of high-tension switch cabinet according to claim 3 or bus connecting device, it is characterized in that: combine by two unit jockeys, the insulator of two unit jockeys (5), stress cone (1), conducting terminal (6) symmetric arrays, insulator of two unit (5) and conducting terminal (6) are connected as a single entity respectively, and a shared bolt (9), insulating sleeve (11), metallic conduction post (12) and blanking cover (8).