CN201781219U

CN201781219U - Bus coupler cabinet

Info

Publication number: CN201781219U
Application number: CN 201020514776
Authority: CN
Inventors: 刘桂华; 侯峰; 潘延虹; 吴键
Original assignee: GUANGXI YINHE DECOM ELECTRIC CO Ltd
Current assignee: GUANGXI YINHE DECOM ELECTRIC CO Ltd
Priority date: 2010-09-02
Filing date: 2010-09-02
Publication date: 2011-03-30
Anticipated expiration: 2020-09-02

Abstract

The utility model discloses a bus coupler cabinet, which comprises a cabinet body (2), an insulation air box (1) installed in the cabinet body (2), and a switch connected between two groups of three-phase bus coupler bases (7), wherein the switch adopts a three-phase circuit breaker pole, and a three-phase circuit breaker pole operation lever (23) is connected with a circuit breaker operating mechanism (21) outside the insulation air box; three vacuum arc extinguishing chambers (25) in the three-phase circuit breaker pole are isolated and encapsulated in an insulating cylinder (20) formed through epoxy resin pressure casting, the internal dimension of the air box is optimized, and the bus coupler cabinet has the capability of reliably switching on and off short circuit current. Compared with the traditional bus coupler cabinet, the bus coupler cabinet provided by the utility model can solve the problems that the traditional bus coupler cabinet can not shut off fault current and has larger volume.

Description

Female connection cabinet

Technical field

This patent relates to electric power system equipment for power transmission and distribution manufacturing technology field, especially with sulfur hexafluoride gas-insulating, in the high voltage switchgear of switching device is housed.

Background technology

At present, during ring network power supply, when there is the two-way electric power incoming line in system, and two-way need carry out UNICOM with the main bus bar of two-way power supply when standby each other, just needs female connection cabinet UNICOM.Existing female connection cabinet divides by dielectric and roughly is divided into three kinds of air insulations, sulfur hexafluoride gas-insulating, solid insulation.The female connection of air insulation cabinet cabinet volume is big, and the good volume of sulfur hexafluoride gas-insulating performance reduces greatly, solid insulation reliability height.Existing female connection cabinet, the switch that being used in cabinet cut off bus current is to adopt on-load switch mostly, this on-load switch is the version of being carried out separating brake and combined floodgate by moving knife bar and quiet cutter head, no matter this female connection cabinet adopts air insulation or sulfur hexafluoride gas-insulating, can only excise load current, and can not excise fault current, in addition, the structures shape of this guillotine type switch its insulation isolation distance bigger, therefore, cause the cabinet volume big, be difficult to satisfy market joins the cabinet miniaturization to mother requirement.

Summary of the invention

Problem to be solved in the utility model provides a kind of female connection cabinet, and mainly solving existing female connection cabinet can not disjunction fault current and the bigger problem of volume.

In order to address the above problem, in the technical scheme that this patent adopts, the insulation gas tank that has comprised the cabinet that also has in the prior art and be used to encapsulate the threephase switch device, and the mother block that is contained in the three-phase on the described insulation gas tank, and be connected conducting connecting part between three-phase mother block and the switching device, in addition, described switching device adopts the three-phase breaker pole to serve as, this three-phase breaker pole actuating bar is connected with the breaker operation mechanism that is contained in described insulation gas tank outside, and three equal insulation package of vacuum interrupter in the described three-phase breaker pole are in the same insulating cylinder inside that is formed by the epoxy resin pressure injection.

In the technique scheme, for more rational layout, to obtain convenience and each the parts reliably working that product uses, improve insulation property, described breaker operation mechanism can be installed in the top of insulation gas tank header board; Wherein one group of described three-phase mother block preferably is contained in the top of described insulation gas tank left plate, and another organizes the top that described three-phase mother block then is contained in described insulation gas tank right plate; The insulating gas air gauge is contained in the top of described insulation gas tank header board by unidirectional valve, and the insulating gas relief valve is contained on the described insulation gas tank base plate.In the above-mentioned various implementations, described insulation gas tank preferably adopts the corrosion resistant plate of 3 millimeters thick to connect by laser welding and makes.

Owing to adopted above-mentioned design, the utility model beneficial effect compared with prior art is:

1, owing to adopts the three-phase breaker pole to join the switching device of cabinet as mother, can make two buss lines in the connection of cutting off under the failure condition such as be short-circuited between bus, accident and unexpected the generation were avoided in rapidly blow-out and suppress electric current after high-tension circuit was cut off the electricity supply.

2, three vacuum interrupters owing to the three-phase breaker pole all are encapsulated in the same insulating cylinder, compare with existing disconnecting link formula switch and can reduce alternate isolation distance widely, thereby greatly save the switch space, thisly adopted the mother of sulfur hexafluoride gas and two kinds of forms of solid insulation to join cabinet, not only can make each parts obtain enough dielectric strengths, and the cabinet volume is reduced greatly, width can accomplish to have only 325 millimeters.

3, the insulation gas tank adopts stainless steel materials to make by laser welding process, can make the insulation gas tank obtain higher structural strength, and better air-tightness is to protect the reliability of female connection cabinet.

Description of drawings

Below in conjunction with drawings and Examples the design is further specified.

Fig. 1 is the left side structural representation of the utility model embodiment;

Fig. 2 is the backsight structural representation of insulation gas tank inside among the utility model embodiment;

Fig. 3 is three-phase breaker pole and a breaker operation mechanism syndeton schematic diagram among the utility model embodiment.

Embodiment

The utility model is described in further detail below in conjunction with the accompanying drawing example:

Shown in Figure 1 is circuit breaker bus connection cabinet, comprises the circuit breaker insulation gas tank 1 that is contained on the housing 2, ground connection row 3, mechanism chamber 4, the insulation gas tank be stainless steel materials with 3 millimeters thick by the casing that laser welding connected and composed, these parts are except concrete size, with existing female to join cabinet identical.

Shown in Figure 2 is circuit breaker insulation gas tank rear view, pressure release flange 6 is contained in the rear portion of the base plate of insulation gas tank, one group of three-phase mother block 7 is the inlet wire mother block, be contained in the top of insulation gas tank left plate (right side among the figure), the electric-conductor of the C phase mother block of three-phase mother block 7 is by the vertical copper bar 16 of C phase inlet wire, horizontal copper bar 17 of C phase inlet wire and the C moving contact link connection of pole mutually; The electric-conductor of the B phase mother block of three-phase mother block 7 is by the vertical copper bar 12 of B phase inlet wire, horizontal copper bar 13 of B phase inlet wire and the B moving contact link connection of pole mutually; The electric-conductor of the A phase mother block of three-phase mother block 7 is by the vertical copper bar 8 of A phase inlet wire, horizontal copper bar 9 of A phase inlet wire and the A moving contact link connection of pole mutually.

Another group three-phase mother block is contained in left side among the insulation gas tank right plate 5(figure) top, this group mother block is the outlet mother block, the electric-conductor of its C phase mother block by the horizontal copper bar 18 of C phase outlet and the vertical copper bar 19 of C phase outlet and C mutually the fixed contact link of pole be connected; The electric-conductor of the B phase mother block of this group mother block by the horizontal copper bar 14 of B phase outlet and the vertical copper bar 15 of B phase outlet and B mutually the fixed contact link of pole be connected; The electric-conductor of the A phase mother block of this group mother block by the horizontal copper bar 10 of A phase outlet and the vertical copper bar 11 of A phase outlet and A mutually the fixed contact link of pole be connected.

A, B, C phase and vacuum interrupter all are encapsulated in the same Switch Insulation Cylinder 20.

Shown in Figure 3 is circuit breaker insulation gas tank left view, and air gauge 29 is fixed on the left side on circuit breaker insulation gas tank 1 front panel top by unidirectional valve 28, can show the insulating gas pressure of circuit breaker insulation gas tank 1; Breaker operation mechanism 21 is installed in the top of insulation gas tank header board, breaker operation mechanism 21 is by bellows external member 22, insulated tension pole 23 and three-phase breaker pole insulating cylinder sealed attachment and drive moving contacts motion in the vacuum interrupter 25, the plate motion is the combined floodgate direction behind the circuit breaker insulation gas tank, is the separating brake direction toward the motion of circuit breaker insulation gas tank header board; The moving contact link 27 of vacuum interrupter 25 is that the fixed contact link 26 of end of incoming cables, vacuum interrupter 25 is leading-out terminal, and fixed contact link 26 is connected with the moving contact connection electrode by conducting electricity soft pigtail 24.

Claims

1. a mother joins cabinet, include cabinet (2) and be contained in insulation gas tank (1) in the cabinet (2), be connected the switch between two groups of three-phase mother blocks (7), it is characterized in that: described switch is the three-phase breaker pole, this three-phase breaker pole actuating bar (23) is connected with the breaker operation mechanism (21) that is contained in described insulation gas tank outside, and the equal insulation package of three vacuum interrupters (25) in the described three-phase breaker pole is in the same insulating cylinder that is formed by the epoxy resin pressure injection (20) inside.

2. female connection cabinet according to claim 1, it is characterized in that: described breaker operation mechanism (21) is installed in the top of insulation gas tank (1) header board; Wherein one group of described three-phase mother block (7) is contained in the top of described insulation gas tank left plate, and another organizes the top that described three-phase mother block is contained in described insulation gas tank right plate (5); Insulating gas air gauge (29) is installed in the top of described insulation gas tank (1) header board by unidirectional valve (28), and insulating gas relief valve (6) is contained on the base plate of described insulation gas tank (1).

3. female connection cabinet according to claim 1 and 2 is characterized in that: described insulation gas tank (1) is by casing that laser welding connected and composed with the stainless steel materials of 3 millimeters thick.