CN2391293Y

CN2391293Y - Power isolated switch

Info

Publication number: CN2391293Y
Application number: CN 99243244
Authority: CN
Inventors: 曹仁生
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-18
Filing date: 1999-09-18
Publication date: 2000-08-09
Anticipated expiration: 2009-09-18

Abstract

The utility model relates to a power isolated switch. A left contact comprises a contact tube, a plunger which is inserted into the contact tube and is fixed via articulated pins, a stylus holder which is sheathed on the head end of the contact tube and is fixedly assembled with the plunger which is inserted into the contact tube via bolts, styluses which are movably inserted into the front and back sides of the stylus holder via positioning pins and stylus springs and stylus limiting clamps which actuate the two styluses to be inwardly with all efforts. The left contact is formed by arranging the contact tube and division stream lines of stylus heads on the outer side of each of the two styluses of the left contact respectively; the problem that the electrical conductivity performance and the performance of the spring of the stylus are influenced is solved, and heating faults and hidden troubles are eliminated. The power isolated switch with the advantages of good electrical conductivity and high safety is an ideal technique reformation proposal to the existing power isolated switch.

Description

Power disconnecting switch

The utility model relates to a kind of switchgear, particularly a kind of power disconnecting switch.

At present, the used isolating switch of electric power network mostly is the isolating switch of traditional hugging pressure type contact structures, as used GW5 series isolation switch, its left contact is by contact tube 11, the stopper 12 that is inserted in the contact tube 11 and fixes with articulated pin 13, be enclosed within contact tube 11 head ends and fix the fingertip seats 14 that assemble by bolt 17 and the stopper 12 that is inserted in the contact tube 11, be actively plugged in the fingertip 16 of both sides, fingertip seat 14 front and back and drive by alignment pin 15 and sail the spacing card 19 of the inside fingertip spring 18 of two fingertips, 16 your kind efforts and fingertip and constitute, as shown in Figure 1, there is following potential faults: after the combination of left and right sides contact, fingertip transmission current by both sides before and after the left contact, and strut owing to the fingertip of right contact with both sides before and after the left contact this moment, between right contact and left contact two fingertips, what form between left side contact two fingertips and fingertip seat is to contact, contact-making surface diminishes, add switchgear to be in outside work for a long time and be subjected to air pollution to produce the intrusion of oxide layer and polluter, contact resistance increases, simultaneously also because fingertip transmits big electric current, to cause left contact fingertip heating, involve the fingertip spring, cause to drive and sail left contact two fingertip your kind efforts inwardly and the fingertip spring performance degradation that closely contacts with right contact, cause right contact and the two fingertip loose contacts of left contact, contact resistance value further increases, left side contact two fingertips seriously generate heat, further influence the fingertip spring, until the fingertip spring failure.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and provide a kind of and conduct electricity very well, safe and reliable power disconnecting switch.

The purpose of this utility model can realize by such technical scheme: this conducting electricity very well, safe and reliable power disconnecting switch, its left contact comprises contact tube, be inserted in the contact tube and with the fixing stopper of articulated pin, be enclosed within the contact tube head end and fix the fingertip seat that assembles by bolt and the stopper that is inserted in the contact tube, being actively plugged in the fingertip of both sides before and after the fingertip seat and driving and sail inside fingertip spring of two fingertip your kind efforts and the spacing card of fingertip by alignment pin, is that the outside of two fingertips before and after left contact is provided with the shunt line that connects contact tube and fingertip head respectively and constitutes.

This power disconnecting switch provided by the utility model, because the shunting of the shunt line that the two fingertips outside is provided with respectively before and after the left contact, after the contact combination of the left and right sides, reduce by both sides fingertip electric current transmitted before and after the left contact, not only solved existing power isolating switch left side contact fingertip because of transmitting big electric current and contact tube, the fingertip seat impels the problem that oxide layer generates influences the switchgear electric conductivity to the serious heating that causes owing to loose contact between fingertip, conduct electricity very well, and solved existing power isolating switch left side contact fingertip because of transmitting big electric current and contact tube, the fingertip seat is to the problem of the serious warming-up effect fingertip spring performance that causes owing to loose contact between fingertip, eliminated the heating accident hidden danger that the existing power isolating switch exists, safe and reliable, be the desirable renovation technique scheme of existing power isolating switch.

Below in conjunction with embodiment and accompanying drawing thereof the utility model is described in further detail:

Fig. 1 is the left structure of contact terminal schematic diagram of existing GW5 series power disconnecting switch.

The left structure of contact terminal schematic diagram of the power disconnecting switch that Fig. 2 is provided for the utility model embodiment.

With reference to accompanying drawing, this power disconnecting switch that the utility model embodiment is provided, its left contact comprises contact tube 21, be inserted in the contact tube 21 and with the fixing stopper 22 of articulated pin, be enclosed within contact tube 21 head ends and fix the fingertip seats 24 that assemble by bolt 27 and the stopper 22 that is inserted in the contact tube 21, be actively plugged in the fingertip 26 of both sides, fingertip seat 24 front and back and drive and sail inside fingertip spring 28 of two fingertips, 26 your kind efforts and the spacing card 29 of fingertip by alignment pin 25, be in the outside of left contact front and back two fingertips the shunt line 3 that connects contact tube 21 and fingertip head 26a to be set respectively to constitute, and described shunt line 3 is connected with fingertip head 26a with contact tube 21 by the shunting card 4 that is provided with respectively, among the figure, 5---bolt, 6---right contact.

Claims

1, a kind of power disconnecting switch, its left contact comprises contact tube (21), be inserted in the contact tube (21) and with the fixing stopper (22) of articulated pin, be enclosed within contact tube (21) head end and fix the fingertip seat (24) that assembles by bolt (27) and the stopper (22) that is inserted in the contact tube (21), be actively plugged in the fingertip (26) of both sides before and after the fingertip seat (24) and drive and sail the inside fingertip spring (28) of two fingertips (26) your kind effort and the spacing card 29 of fingertip by alignment pin (25), it is characterized in that: it is that the outside of two fingertips before and after left contact is provided with shunt line (3) formation that connects contact tube (21) and fingertip head (26a) respectively.

2, power disconnecting switch according to claim 1 is characterized in that: described shunt line (3) is to be connected with fingertip head (26a) with contact tube (21) by the shunting card (4) that is provided with respectively.