CN1040810C - Contact mechanism of arc-free high-voltage switch - Google Patents
Contact mechanism of arc-free high-voltage switch Download PDFInfo
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- CN1040810C CN1040810C CN93108114A CN93108114A CN1040810C CN 1040810 C CN1040810 C CN 1040810C CN 93108114 A CN93108114 A CN 93108114A CN 93108114 A CN93108114 A CN 93108114A CN 1040810 C CN1040810 C CN 1040810C
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- 230000007704 transition Effects 0.000 claims abstract description 30
- 230000003068 static effect Effects 0.000 claims abstract description 22
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 16
- 238000010891 electric arc Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 5
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention relates to a contact mechanism of a non-arc high-voltage switch, which at least comprises a moving contact and a static contact which are arranged in a switch seat body, and is characterized in that a switch transition sliding resistance bridge capable of disconnecting a circuit is arranged between the moving contact and the static contact. In the process of separating or closing the moving contact and the static contact, the resistance value of the sliding resistance bridge connected between the moving contact and the static contact is increased or decreased along with the size of the distance between the moving contact and the static contact. When the circuit is switched off, no electric arc is generated between the moving contact and the static contact due to the current limiting function of the sliding resistance bridge. In a similar way, when the moving contact is in a closing stroke, the moving contact needs to be in contact with the sliding resistance bridge in advance through switch transition, so that an electric arc cannot be generated at the interface of a switch circuit.
Description
The present invention relates to a kind of contact mechanism of arc-less type mains switch, particularly a kind of contact mechanism of arc-less type high-voltage switch gear.
Existing primary cut-out cut-off or closure be that direct clutch by dynamic and static contact is achieved, because voltage height, electric current are big, from, fashionable, often to form electric arc between the dynamic/static contact, and perplex the operate as normal of electric power system.In order to solve the problem of extinguish arcs, common way is that arc-control device is set in primary cut-out, and this all causes the complex structureization of primary cut-out.
The objective of the invention is to provide a kind of contact mechanism of arc-less type high-voltage switch gear.This mechanism realize circuit cut-off or closing course in do not produce electric arc.
The present invention is achieved in that and which comprises at least moving contact and the fixed contact of being located in the switch pedestal, but it is characterized in that being provided with between the dynamic and static contact switch transition slide-changing resistor bridge of open circuit.In the process of dynamic and static contact separation or closure, the resistance value that is connected in the slide-changing resistor bridge between the dynamic and static contact will increase and decrease along with the size of dynamic/static contact spacing.When cut-offfing circuit, because the metering function of slide-changing resistor bridge does not produce electric arc between dynamic/static contact.In like manner, when moving contact carries out closing stroke, because need be through the contact in advance of switch transition slide-changing resistor bridge, therefore, the interface of circuit can not produce electric arc yet.
The resistance of above-mentioned switch transition slide-changing resistor bridge can be made of the resistive segments (as R1, R2, R3, R4) of several different resistance values, and each resistive segments is arranged in order along cut-offfing stroke directions by resistance principle from small to large.
Simple structure of the present invention, modern design, the arc-less type high and low pressure mains switch that adopts this invention to make has simple to operate, safe and reliable, the low remarkable advantage that waits of cost, its popularizing application prospect is considerable.
Concrete structure of the present invention is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the circuit theory diagrams of embodiment one.5 is fixed contact among the figure; 6 is the resistance bridge by the resistive segments formation of the individual different resistances of N (N 〉=1); 8 is sliding contact; 25 is moving contact.
Fig. 2 is embodiment one organigram, and 5 is fixed contact among the figure; 6 for being fixed in the resistance bridge of fixed contact side; 7 is fixed contact; 8 is sliding contact; 25 is moving contact.
Fig. 3 is the closure state schematic diagram of embodiment one.
Fig. 4 is that embodiment one cut-offs the stroke schematic diagram.
Fig. 5 is that embodiment one cut-offs view.
Fig. 6 is the circuit theory diagrams of embodiment two.12 is fixed contact among the figure; 28 is resistance bridge; 14 is moving contact; 13 is sliding contact.
Fig. 7 is embodiment two organigrams, and 12 is fixed contact among the figure; 13 is sliding contact; 14 is moving contact; 27 is fixed contact; 28 is resistance bridge.
Fig. 8 is the closure state schematic diagram of embodiment two.
Fig. 9 is that embodiment two cut-offs the stroke schematic diagram.
Figure 10 is that embodiment two cut-offs view.
Figure 11 is the circuit theory diagrams of embodiment three.19 is fixed contact among the figure; 20 is resistance bridge; 21 is sliding contact; 23 is moving contact.
Figure 12 is embodiment three organigrams, and 19 is fixed contact among the figure; 20 is resistance bridge; 21 is sliding contact; 23 is moving contact.
Figure 13 is the closure state schematic diagram of embodiment three.
Figure 14 is that embodiment three cut-offs the stroke schematic diagram.
Figure 15 is that embodiment three cut-offs view.
Figure 16 is the closure state schematic diagram of embodiment four.
Figure 17 is that embodiment four cut-offs the stroke schematic diagram.
Figure 18 is that embodiment four cut-offs view.29 is L shaped moving contact among the figure, and 33 is fixed contact, and 30 is resistance bridge, and 31 is the contact of resistance bridge upper end, and 32 is the sliding contact of resistance bridge, and 34 is back-moving spring.
Figure 19 is embodiment five organigrams.
With reference to Fig. 1, Fig. 2, embodiment one comprises moving contact 25, fixed contact 5 and the switch transition slide-changing resistor bridge of being located in the switch pedestal.The contact 7 of these switch transition slide-changing resistor bridge 6 one ends is connected with fixed contact 5, and the sliding contact 8 of the other end is connected with moving contact 25.
When embodiment one is in closure state such as Fig. 3, the resistance of the switch transition slide-changing resistor bridge that is made of resistance bridge 6, fixed contact 7 and sliding contact 8 is zero; Dynamic and static contact contact.When moving contact is in the stroke that cut-offs as Fig. 4, the resistance that is serially connected with the switch transition slide-changing resistor bridge in the circuit is along with the spacing of dynamic and static contact increases and increases, sliding contact 8 on moving contact breaks away from resistance bridge 6, circuit cut-offs (at this moment, because the metering function of resistance bridge 6 does not produce electric arc between dynamic/static contact).
When moving contact begins closing stroke, moving contact at first contacts (in like manner, because the metering function of resistance bridge 6 so do not produce electric arc) through sliding contact with resistance bridge 6.Along with moving contact continues to draw close to fixed contact, the resistance that is series at the switch transition slide-changing resistor bridge in the circuit constantly reduces, until being zero, dynamic and static contact contact.
Embodiment two is identical with the operation principle of embodiment one, and constructional difference only is that the fixed contact of switch transition slide-changing resistor bridge is to be connected on the moving contact, and sliding contact is to be connected on the fixed contact, sees Fig. 6 Fig. 7.Operating state such as Fig. 8 of embodiment two interrupting processes, Fig. 9, Figure 10.
The operation principle of embodiment three and structure are seen Figure 11, Figure 12, and it comprises moving contact 23, fixed contact 19 and the switch transition slide-changing resistor bridge of being located in the switch pedestal.This switch transition slide-changing resistor bridge has the resistance bridge 20 that can move back and forth in the switch pedestal, a terminal contacts 22 of resistance bridge can or separate with the fixed contact contact, and the sliding contact 21 on the resistance bridge links with moving contact 23.
When embodiment three is in closure state such as Figure 13, by resistance bridge 20, the resistance of the switch transition slide-changing resistor bridge that the contact 22 of resistance bridge one end and sliding contact 21 constitute is zero, dynamic and static contact contact.Its interrupting process is: draw back moving contact earlier 1., as Figure 14, the resistance that makes the switch transition slide-changing resistor bridge that is series in the circuit is along with the spacing of dynamic and static contact increases and increases, cut-off until moving contact and to put in place, the resistance of switch transition this moment slide-changing resistor bridge reaches maximum, then, draws back resistance bridge 20 more fast as Figure 15, make contact 22 separate (because therefore the metering function of resistance bridge does not produce electric arc) with fixed contact.
The structure of embodiment four such as Figure 16,17,18, it comprises moving contact 29, fixed contact 33 and the switch transition slide-changing resistor bridge of being located in the switch pedestal.This switch transition slide-changing resistor bridge has is located at the fixed contact side, the resistance bridge 30 that can in the switch pedestal, move back and forth, and the contact 31 of resistance bridge upper end can or be separated with the moving contact contact, and the sliding contact 32 on the resistance bridge links with fixed contact.The bottom of resistance bridge is provided with the back-moving spring 34 that is fixed on the switch pedestal.
When embodiment everywhere in closure state, as Figure 16, by resistance bridge 30, the resistance of the switch transition slide-changing resistor bridge that last terminal contacts 31 and sliding contact 32 constitutes is zero, dynamic and static contact contact.When being in, cut-offs in the stroke moving contact as Figure 17, resistance bridge 30 under the effect of back-moving spring along with moving contact is up, the resistance that is connected on the switch transition slide-changing resistor bridge in the circuit is along with the spacing of dynamic and static contact increases and increases, walk to top dead-centre until resistance bridge, moving contact breaks away from the last terminal contacts 31 of resistance bridge, and as Figure 18, this mechanism realizes that cut-offfing of circuit (is because the metering function of resistance bridge equally, therefore this mechanism realize cut-offfing or closed process in, do not produce electric arc).
The structure of embodiment five such as Figure 19.It is improved formation on existing knife switch basis.It comprises moving contact and the fixed contact of being located in the switch pedestal, it is characterized in that; Fixed contact 35 is the knife rests that are fixed on the switch pedestal 36, the moving contact 37 of cooperating is that the lower end is articulated in the plug-in strip on the switch pedestal with it, the sliding contact of switch transition slide-changing resistor bridge is the work contact point 39 on the plug-in strip, and the lower end 38 of switch transition slide-changing resistor bridge is fixed on the knife rest.
Its operation principle is identical with the foregoing description one.
Claims (7)
1. the contact mechanism of an arc-less type high-voltage switch gear comprises moving contact and the fixed contact be located in the switch pedestal at least, but it is characterized in that being provided with between the dynamic/static contact switch transition slide-changing resistor bridge of open circuit.
2. the contact mechanism of arc-less type high-voltage switch gear according to claim 1 is characterized in that: the resistance of switch transition slide-changing resistor bridge is by constituting as if the resistive segments in individual different resistances.
3. the contact mechanism of arc-less type high-voltage switch gear according to claim 1 and 2 is characterized in that: an end of switch transition slide-changing resistor bridge is connected with fixed contact, and the sliding contact of the other end is connected with moving contact.
4. the contact mechanism of arc-less type high-voltage switch gear according to claim 1 and 2 is characterized in that: an end of switch transition slide-changing resistor bridge is connected with moving contact, and the sliding contact of the other end is connected with fixed contact.
5. the contact mechanism of arc-less type high-voltage switch gear according to claim 1 and 2, it is characterized in that: switch transition slide-changing resistor bridge has the resistance bridge that can move back and forth in the switch pedestal, one terminal contacts of resistance bridge can or separate with the fixed contact contact, and sliding contact and moving contact on the resistance bridge link.
6. the contact mechanism of arc-less type high-voltage switch gear according to claim 1 and 2, it is characterized in that: switch transition slide-changing resistor bridge has the resistance bridge that can move back and forth of being located at the fixed contact side in the switch pedestal, the contact of resistance bridge upper end can or be separated with the moving contact contact, sliding contact on the resistance bridge is connected with fixed contact, and the bottom of resistance bridge is provided with the back-moving spring that is fixed on the switch pedestal.
7. the contact mechanism of arc-less type high-voltage switch gear according to claim 1 and 2, it is characterized in that: fixed contact is the knife rest that is fixed on the switch pedestal, the moving contact of cooperating is that the lower end is articulated in the plug-in strip on the switch pedestal with it, the sliding contact of switch transition slide-changing resistor bridge is the work contact point on the plug-in strip, and the lower end of switch transition slide-changing resistor bridge is fixed on the knife rest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93108114A CN1040810C (en) | 1993-07-06 | 1993-07-06 | Contact mechanism of arc-free high-voltage switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93108114A CN1040810C (en) | 1993-07-06 | 1993-07-06 | Contact mechanism of arc-free high-voltage switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1097262A CN1097262A (en) | 1995-01-11 |
| CN1040810C true CN1040810C (en) | 1998-11-18 |
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ID=4987006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93108114A Expired - Fee Related CN1040810C (en) | 1993-07-06 | 1993-07-06 | Contact mechanism of arc-free high-voltage switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1040810C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4160637A1 (en) | 2021-10-01 | 2023-04-05 | Schneider Electric Industries SAS | Disconnection for high-voltage circuits |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2221844B1 (en) * | 2009-02-24 | 2013-10-09 | ABB Technology AG | Switching device |
| FR2944911B1 (en) * | 2009-04-23 | 2012-12-28 | Areva T & D Sa | RESISTANCE MEDIUM-VOLTAGE ROTARY ELECTRIC SWITCH-DISCONNECT SWITCH |
| CN102005349B (en) * | 2010-12-09 | 2013-09-04 | 武汉长海电气科技开发有限公司 | Current limiter |
| CN102709033A (en) * | 2012-01-04 | 2012-10-03 | 吴江市东泰电力特种开关有限公司 | Continuous transitional on-load tap switch |
| CN103903884B (en) * | 2014-03-10 | 2016-06-08 | 广东电网公司电力科学研究院 | The anti-arcing protection switch of a kind of totally enclosed type |
| CN107610961A (en) * | 2016-07-11 | 2018-01-19 | 郭富强 | A kind of breaker |
| CN106449262A (en) * | 2016-10-24 | 2017-02-22 | 上海电力学院 | Method for putting closing resistor into ultra-high voltage tank-type circuit breaker |
| CN112964020A (en) * | 2021-03-04 | 2021-06-15 | 合肥美菱物联科技有限公司 | Refrigerator shelf offset detection and alarm control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057362A (en) * | 1990-06-14 | 1991-12-25 | Gec阿尔斯托姆有限公司 | Be with rheostatic circuit breaker |
| CN1066933A (en) * | 1991-05-23 | 1992-12-09 | 株式会社日立制作所 | Circuit-breaker with parallel resistance |
-
1993
- 1993-07-06 CN CN93108114A patent/CN1040810C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057362A (en) * | 1990-06-14 | 1991-12-25 | Gec阿尔斯托姆有限公司 | Be with rheostatic circuit breaker |
| CN1066933A (en) * | 1991-05-23 | 1992-12-09 | 株式会社日立制作所 | Circuit-breaker with parallel resistance |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4160637A1 (en) | 2021-10-01 | 2023-04-05 | Schneider Electric Industries SAS | Disconnection for high-voltage circuits |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1097262A (en) | 1995-01-11 |
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