CN101030500A

CN101030500A - Vacuum loading switch

Info

Publication number: CN101030500A
Application number: CN 200710019229
Authority: CN
Inventors: 范雄
Original assignee: DECHUN ELECTRIC APPLIANCES Co Ltd CHANGZHOU
Current assignee: Jiangsu Dechun Power Electric Co ltd
Priority date: 2007-01-08
Filing date: 2007-01-08
Publication date: 2007-09-05
Anticipated expiration: 2027-01-08
Also published as: CN100536053C

Abstract

The invention is concerned with a kind of vacuum load switch for high voltage fixed type switchboard, relating to upside wire of switch, insulated switch, insulated knife frame, vacuum interrupter, downside move contactor, downside wire frame, united terminal, cable leading line plank, insulated knife insulated perch assemblage, interrupter insulated perch assemblage, operation frame and grounding equipment. The insulated switch connects with vacuum interrupter, the insulated knife insulated perch assemblage and interrupter insulated perch assemblage connect with operation frame, and the insulated knife frame, vacuum interrupter and downside wire frame are closed together. The hinge end of insulated switch has contact spring that connects with insulated switch and insulated knife frame. The move end of vacuum interrupter has contact spring that connects with downside move contactor and downside wire frame. This invention has large insulated strength and modularization level, and the simple using is fit for production on scaled.

Description

Vacuum load switch

Technical field

The present invention relates to the fixed switch cubicle of a kind of high pressure, particularly a kind of vacuum load switch.

Background technology

Existing vacuum load switch, the ZN28-12 vacuum circuit-breaker of domestic use for example, its live part is exposed, therefore is subjected to the influence of environment bigger, the failure rate height, reliability is not high.Chinese patent literature CN1420514 discloses a kind of integrative full-insulation pole vacuum automatic load switch for this reason, in the seal case of the gauge pressure that zeroizes in the operating mechanism in this structure, isolation switch and vacuum interrupter all are fixed on SF6 gas, to prevent the moisture intrusion, improve its reliability.But SF6 gas is greenhouse gas, and its greenhouse effect are 2500 times of carbon dioxide, have greater environmental impacts, and do not meet environmental requirement.In addition, existing vacuum load switch all adopts soft connection in the moved end of vacuum interrupter and the union end of isolation switch, because soft connection is charged, the user can only add insulating barrier bus-bar room and cable vault are separated, and has reduced the degree of protection of switch cubicle, makes troubles for user's use; Simultaneously because the pole installing space of on-load switch is very little, and the guiding clearance of vacuum interrupter moved end is also very little, the bellows of vacuum interrupter again can not be stressed during fastening soft connection, and is very difficult when therefore assembling.

Summary of the invention

The object of the present invention is to provide a kind of dielectric strength height, compliance with environmental protection requirements, and assembling and use all vacuum load switch easily.

In order to achieve the above object, the technical solution used in the present invention is: a kind of vacuum load switch, comprise outlet on the disconnecting link, isolation switch, isolate tool rest, vacuum interrupter, lower moving contact, following outlet seat, connect busbar, the cable outlet plate, the assembling of isolation knife insulated tension pole, the assembling of arc control device insulated tension pole, operating mechanism and earthing device, isolation switch serial connection vacuum interrupter, assembling of isolation knife insulated tension pole and the assembling of arc control device insulated tension pole all are in transmission connection with operating mechanism, isolate tool rest, vacuum interrupter reaches down, and the outlet seat is enclosed in together admittedly, the hinge support of isolation switch is provided with the fingertip spring, the fingertip spring touches with isolation switch and isolation knife seated connection respectively, be provided with the fingertip spring in the moved end of vacuum interrupter, the fingertip spring touches with lower moving contact and following outlet seated connection respectively.

After adopting said structure, the outlet seat is enclosed in together admittedly with APG technology owing to isolation tool rest, vacuum interrupter reach down, has improved the modularization level of product, has strengthened the ability of anti-adverse environment, has simplified assembly technology; Adopt vacuum insulation simultaneously, avoided of the pollution of SF6 gas, compliance with environmental protection requirements environment.Also owing to the hinge support at isolation switch is provided with the fingertip spring, the fingertip spring touches with isolation switch and isolation knife seated connection respectively, be provided with the fingertip spring in the moved end of vacuum interrupter, the fingertip spring touches with lower moving contact and following outlet seated connection respectively, the isolation switch that has overcome isolating switch with fingertip spring new technology is charged because of being flexible coupling, and must add the defective of insulation board.Pole among the present invention connects with zero-clearanceization between isolation switch, has further improved the effect of solid envelope; Avoided being flexible coupling, further improved reliability, can really realize non-maintaining the influence of aspects such as conductivity and mechanical endurance.And because the reinforcement of external insulation, the overall dimension of switch cubicle also can correspondingly reduce, and has adapted to currently to the high reliability of switch cubicle and the requirement of miniaturization, also has modularization level height, is suitable for advantages such as standardization, large-scale production.

Description of drawings

Fig. 1 is the front elevational schematic of vacuum load switch of the present invention;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the vertical view of Fig. 2;

Fig. 4 is the cutaway view of Fig. 2 along the A-A line;

Fig. 5 is the structural representation of vacuum load switch of the present invention when isolation knife separating brake position;

Fig. 6 is the structural representation of vacuum load switch of the present invention when the isolation knife closing position;

Fig. 7 is the cutaway view of Fig. 5 along the B-B line;

Fig. 8 is the cutaway view of Fig. 5 along the C-C line;

Fig. 9 is the perspective view of vacuum load switch of the present invention.

Embodiment

The embodiment that provides below in conjunction with accompanying drawing does explanation in further detail to the present invention.

As Fig. 1,2,3,4, shown in 5, a kind of vacuum load switch of the present invention, comprise outlet 1 on the disconnecting link, isolation switch 15, isolate tool rest 13, vacuum interrupter 5, lower moving contact 11, following outlet seat 12, connect busbar 10, cable outlet plate 9, isolation knife insulated tension pole assembling 4, arc control device insulated tension pole assembling 8, operating mechanism 16 and earthing device 17, isolation switch 15 serial connection vacuum interrupters 5, assembling 4 of isolation knife insulated tension pole and arc control device insulated tension pole assembling 8 all are in transmission connection with operating mechanism 16, isolate tool rest 13, vacuum interrupter 5 reaches down, and outlet seat 12 is enclosed in together admittedly, the hinge support of isolation switch 15 is provided with fingertip spring 14, fingertip spring 14 contacts with isolation tool rest 13 with isolation switch 15 respectively, be provided with fingertip spring 6 in the moved end of vacuum interrupter 5, fingertip spring 6 contacts with following outlet seat 12 with lower moving contact 11 respectively.

Shown in Fig. 4,5,6, outlet seat 12 was enclosed in together admittedly by epoxy resin 18 under isolation tool rest 13, vacuum interrupter 5 reached.

Shown in Fig. 5,6,7, the hinge support side of isolation switch 15 is provided with groove 15-1, and fingertip spring 14 is contained in the groove 15-1, the exposed face of fingertip spring 14 and the hinge support sliding contact of isolating tool rest 13.

As shown in Figure 7, fingertip spring 14 is two, is contained in respectively among the groove 15-1 of hinge support both sides of isolation switch 15.

Shown in Fig. 5,6,8, the slide opening wall of following outlet seat 12 is provided with groove 12-1, and fingertip spring 6 is contained in the groove 12-1, the inner ring side of fingertip spring 6 and lower moving contact 11 sliding contacts.

Shown in Fig. 5,6,8, fingertip spring 6 is two, is contained in down respectively among two groove 12-1 on the slide opening wall of outlet seat 12.

Shown in Fig. 5,6, also be provided with groove on the slide opening wall of following outlet seat 12, lower moving contact F4 ring 7 is housed, the inner ring side and lower moving contact 11 sliding contacts of lower moving contact F4 ring 7 in the groove.

Shown in Fig. 5,6, isolation knife insulated tension pole assembling 4 comprises connecting rod 4-1, connecting lever 4-2, pull bar 4-3 etc.

Shown in Fig. 5,6,9, the course of action of vacuum load switch of the present invention is as follows: the isolation knife making process: operating mechanism 16 drives pull bar 4-3 and moves downward, drive connecting lever 4-2, connecting rod 4-1, isolation switch 15, the fingertip assembling 3 of isolation switch 15 is engaged with disconnecting link fixed contact 2, and isolating switch is made combined floodgate and is moved; Isolation knife separating brake process: operating mechanism 16 drives pull bar 4-3 and moves upward, and drives connecting lever 4-2, connecting rod 4-1, and isolation switch 15 breaks away from the fingertip assembling 3 of isolation switch 15 and disconnecting link fixed contact 2, and isolating switch is done the separating brake action; The on-load switch making process: operating mechanism 16 drives arc control device insulated tension pole assembling 8 and moves upward, and drives lower moving contact 11, vacuum interrupter 5 work combined floodgate actions; On-load switch separating brake process: operating mechanism 16 drives arc control device insulated tension pole assembling 8 and moves downward, and driving lower moving contact 11, vacuum interrupter 5 are done the separating brake action.

The galvanic circle: after switch closed a floodgate, electric current outlet 1 from the disconnecting link, was isolated tool rest 13, vacuum interrupter 5, lower moving contact 11, outlet seat 12 and connect busbar 10 down at the disconnecting link fixed contact 2 of flowing through, fingertip assembling 3, isolation switch 15, flows on the cable outlet plate 9.

Claims

1, a kind of vacuum load switch, comprise outlet on the disconnecting link (1), isolation switch (15), isolation tool rest (13), vacuum interrupter (5), lower moving contact (11), following outlet seat (12), connect busbar (10), cable outlet plate (9), isolation knife insulated tension pole assembling (4), the assembling of arc control device insulated tension pole (8), operating mechanism (16) and earthing device (17), isolation switch (15) serial connection vacuum interrupter (5), isolation knife insulated tension pole assembling (4) and arc control device insulated tension pole assembling (8) all are in transmission connection with operating mechanism (16), it is characterized in that:

Outlet seat (12) was enclosed in together admittedly under a, isolation tool rest (13), vacuum interrupter (5) reached,

The hinge support of b, isolation switch (15) is provided with fingertip spring (14), and fingertip spring (14) contacts with isolation tool rest (13) with isolation switch (15) respectively,

C, be provided with fingertip spring (6) in the moved end of vacuum interrupter (5), fingertip spring (6) contacts with following outlet seat (12) with lower moving contact (11) respectively.

2, vacuum load switch according to claim 1 is characterized in that: outlet seat (12) was enclosed in together admittedly by epoxy resin (18) under isolation tool rest (13), vacuum interrupter (5) reached.

3, vacuum load switch according to claim 1, it is characterized in that: the hinge support side of isolation switch (15) is provided with groove (15-1), fingertip spring (14) is contained in the groove (15-1), the exposed face of fingertip spring (14) and the hinge support sliding contact of isolating tool rest (13).

4, vacuum load switch according to claim 3 is characterized in that: fingertip spring (14) is two, is contained in respectively in the groove (15-1) of hinge support both sides of isolation switch (15).

5, vacuum load switch according to claim 1 is characterized in that: the slide opening wall of following outlet seat (12) is provided with groove (12-1), and fingertip spring (6) is contained in the groove (12-1), the inner ring side of fingertip spring (6) and lower moving contact (11) sliding contact.

6, vacuum load switch according to claim 5 is characterized in that: fingertip spring (6) is two, is contained in down respectively in two grooves (12-1) on the slide opening wall of outlet seat (12).

7, vacuum load switch according to claim 1 is characterized in that: also be provided with groove on the slide opening wall of following outlet seat (12), lower moving contact F4 ring (7) is housed in the groove, the inner ring side and lower moving contact (11) sliding contact of lower moving contact F4 ring (7).