CN203013612U - Integrated earthing switch - Google Patents
Integrated earthing switch Download PDFInfo
- Publication number
- CN203013612U CN203013612U CN 201320002104 CN201320002104U CN203013612U CN 203013612 U CN203013612 U CN 203013612U CN 201320002104 CN201320002104 CN 201320002104 CN 201320002104 U CN201320002104 U CN 201320002104U CN 203013612 U CN203013612 U CN 203013612U
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- CN
- China
- Prior art keywords
- switch
- sliding contact
- vacuum
- earthing switch
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses an integrated earthing switch, which comprises an air-insulated switch and a vacuum break switch connected with the air-insulated switch in series, wherein the air-insulated switch comprises a sliding contact and a power unit for providing power for movement of the sliding contact; the vacuum break switch is a vacuum arc-extinguishing chamber with short circuit closing ability; and a movable contact of the vacuum arc-extinguishing chamber is arranged in the trajectory of the sliding contact. The integrated earthing switch is simple in structure; through the integrated earthing switch structure that the air insulation break and the vacuum break are connected in series for work, the vacuum break is used to close the earthing current when the integrated earthing switch is closed, and the air break is used to ensure the insulation performances when the the integrated earthing switch is opened, such that the the integrated earthing switch is more securely used.
Description
Technical field
The utility model relates to earthed switch field in the high voltage power transmission and transforming net, relates in particular to a kind of Integral earthing switch with air insulation fracture and vacuum short circuit current making capability.
Background technology
Power circuit distribution section usually is provided with high voltage ground switch and is used for ground protection.Ground protection is even more important to maintenance, inspection operation personnel's personal safety.And this earthed switch closes the large electric current that produces when closing and has the characteristic that frequency is few and electric current can be decayed in time.
Operation power administrative department's requirement earthed switch equipment galvanic circle should have the significantly air insulation fracture of larger spacing under the switch opens situation at present.
Be subjected to subordinate's load effect, earthed switch closes when closing, and has sometimes larger making current.Take 12kV electric pressure equipment as example, under the 12kV electric pressure, maximum can reach 50kA; In this case, the general prebreakdown current of air fracture when contact closing can produce very strong high-temperature electric arc, and easy cause damage of equipment also involves personal safety.So the spacing of regulation air fracture needs 120mm-200mm.Just be not suitable in the place of some limited space like this installing.
Now to the inhibition of high-voltage arc usually by between contact with vacuum or fill with high insulating property gas and realize.Wherein vacuum mode is with its fracture distance little (9-12mm), pollution-free gas discharging (as SF6), be widely adopted without the advantage such as combustion explosion danger.But there is the danger that failure of insulation occurs because of vacuum interrupter gas leakage in little fracture spacing.
The utility model content
The purpose of this utility model is to provide the Integral earthing switch that a kind of volume is little, the fracture spacing is little, safe and reliable.
The utility model adopts following technical proposals:
A kind of Integral earthing switch, comprise air insulation switch and the vacuum fracture switch of connecting with it, described vacuum fracture switch is to be provided with back-moving spring between the moving contact end of a vacuum interrupter with short circuit making capability and described vacuum interrupter and vacuum arc extinguish chamber housing body, described air insulation switch comprise sliding contact and be arranged on sliding contact one end for sliding contact action provides the power set of power, the fixed contact of described vacuum interrupter is connected with sliding contact.
Described power set comprise either-rotation motor, turbine worm, shift knob, and described either-rotation motor connects sliding contact by turbine worm.
Described sliding contact is connected with power set by insulating bar.
The utility model is simple in structure, by the Integral earthing construction of switch of air insulation fracture and vacuum fracture operated in series connection, thereby realize that the Integral earthing switch closes when closing, utilize the vacuum fracture to close the splice grafting earth-current, when opening, utilize air fracture to guarantee insulation property, safer when the Integral earthing switch is used.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of Integral earthing switch, comprise air insulation switch and the vacuum fracture switch of connecting with it, described vacuum fracture switch is to be provided with back-moving spring 3 between moving contact 22 ends of a vacuum interrupter 2 with short circuit making capability and described vacuum interrupter 2 and vacuum interrupter housing, described air insulation switch comprise sliding contact 5 and be arranged on sliding contact 5 one ends for sliding contact 5 actions provide the power set 8 of power, the fixed contact 21 of described vacuum interrupter 2 is connected with sliding contact 5.Described sliding contact 5 connects earth connection 9, also can connect high-tension cable 1.When sliding contact 5 connects high-tension cable 1, whole device annexation, operating principle are constant, sliding contact 5 can be connected with earth connection 9 by electric connector 6, keeps electrical connectivity in the time of can keeping like this sliding contact 5 motion, below just take sliding contact 5 connection earth connections 9 as the example explanation.
Described power set 8 comprise either-rotation motor, turbine worm, shift knob 10, and described shift knob 10 is used for controlling the backward rotation of carrying out of either-rotation motor, and described either-rotation motor connects sliding contact 5 by turbine worm.Described sliding contact 5 is connected with power set by insulating bar 7.In the time of can avoiding work like this, the infringement of earth current to power set, also further protect operator safety.
during work, when the push-button switch 10 of Integral earthing switch closes when closing, described either-rotation motor drives turbine worm and rotates, thereby scroll bar drives sliding contact 5, sliding contact 5 drives the 1 direction motion from lower position to high voltage cable of vacuum fracture switch, when the moving contact 22 of vacuum arc control device 2 touches high-voltage cable, sliding contact 5 continues motion, this moment, moving contact 22 meeting compression reseting springs 3 were synchronized with the movement, when sliding contact 5 continues move and promotes vacuum interrupter 2 compression contacts back-moving springs 3 vacuum fracture pass is closed that the pass splice grafting of completing whole high-tension circuit leads to is that moving contact 22 contacts with fixed contact 21, this moment, high-tension electricity was just by moving, fixed contact and sliding contact are connected to earth connection, thereby complete ground protection.
when the Integral earthing switch need to be opened, press the button switch 10, this moment, either-rotation motor can reverse, drive sliding contact 5 in the other direction motion by worm and gear this moment, under the effect of contact back-moving spring 3, the vacuum fracture is moving in the vacuum extinction device, fixed contact first is opened, when sliding contact 5 continues motion, when back-moving spring returns to initial condition, moving contact 22 disengagings contact with high-tension cable 1, be that air fracture also is opened this moment, until moving to the fully open position, sliding contact 5 and vacuum interrupter 2 stop, air fracture reaches larger safe insulation distance.
Described vacuum interrupter generally has a moving contact and a fixed contact for the existing product that uses.
Power set described in the utility model provide the power support for the motion of sliding contact 5, can reciprocating motions, also can be for other can provide power set, and reach and sliding contact 5 is moved by track get final product, illustrate no longer one by one.
Claims (3)
1. Integral earthing switch, it is characterized in that: comprise air insulation switch and the vacuum fracture switch of connecting with it, described vacuum fracture switch is to be provided with back-moving spring between the moving contact end of a vacuum interrupter with short circuit making capability and described vacuum interrupter and vacuum arc extinguish chamber housing body, described air insulation switch comprise sliding contact and be arranged on sliding contact one end for sliding contact action provides the power set of power, the fixed contact of described vacuum interrupter is connected with sliding contact.
2. Integral earthing switch according to claim 1, it is characterized in that: described power set comprise either-rotation motor, turbine worm, shift knob, described either-rotation motor connects sliding contact by turbine worm.
3. Integral earthing switch according to claim 1, it is characterized in that: described sliding contact is connected with power set by insulating bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320002104 CN203013612U (en) | 2013-01-05 | 2013-01-05 | Integrated earthing switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320002104 CN203013612U (en) | 2013-01-05 | 2013-01-05 | Integrated earthing switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203013612U true CN203013612U (en) | 2013-06-19 |
Family
ID=48605178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320002104 Withdrawn - After Issue CN203013612U (en) | 2013-01-05 | 2013-01-05 | Integrated earthing switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203013612U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123877A (en) * | 2013-01-05 | 2013-05-29 | 许昌永新电气股份有限公司 | Integrated grounding switch |
-
2013
- 2013-01-05 CN CN 201320002104 patent/CN203013612U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123877A (en) * | 2013-01-05 | 2013-05-29 | 许昌永新电气股份有限公司 | Integrated grounding switch |
| CN103123877B (en) * | 2013-01-05 | 2015-09-02 | 许昌永新电气股份有限公司 | A kind of Integral earthing switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130619 Effective date of abandoning: 20150902 |
|
| RGAV | Abandon patent right to avoid regrant |