CN103050329A - Rotary grounding switch - Google Patents
Rotary grounding switch Download PDFInfo
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- CN103050329A CN103050329A CN2013100016931A CN201310001693A CN103050329A CN 103050329 A CN103050329 A CN 103050329A CN 2013100016931 A CN2013100016931 A CN 2013100016931A CN 201310001693 A CN201310001693 A CN 201310001693A CN 103050329 A CN103050329 A CN 103050329A
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- switch
- contact
- vacuum
- rotary
- air insulation
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention discloses a rotary grounding switch, which comprises an air insulation break switch and a vacuum break switch. A transmission is arranged between the air insulation break switch and the vacuum break switch; the air insulation break switch comprises a rotating contact and a power device for providing power to enable the rotating contact to act; the vacuum break switch is a vacuum arc-extinguishing chamber with short-circuit making capacity; and a reset spring is arranged between a moving contact of the vacuum arc-extinguishing chamber and a shell of the vacuum arc-extinguishing chamber. The rotary grounding switch disclosed by the invention is simple in structure; the air insulation break switch and the vacuum break switch act in sequence through using the transmission, and therefore, grounding current is closed by utilizing a vacuum break when the rotary grounding switch is closed; and when the rotary grounding switch is opened, the insulating property is ensured by utilizing an air break, and thus, the rotary grounding switch is safer when in use.
Description
Technical field
The present invention relates to rotary earthed switch field in the high voltage power transmission and transforming net, relate in particular to a kind of rotary earthed switch with air insulation fracture and vacuum short circuit current making capability.
Background technology
Power circuit distribution section usually is provided with the high-voltage rotary earthed switch and is used for ground protection.Ground protection is even more important to maintenance, inspection operation personnel's personal safety.And the large electric current that this rotary earthed switch closes generation when closing has the characteristic that frequency is few and electric current can be decayed in time.
Operation power administrative department requires rotary 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, rotary earthed switch closes when closing, and has sometimes larger making current.Take 12kV electric pressure equipment as example, maximum can reach 50kA under the 12kV electric pressure; 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 (such 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.
Summary of the invention
The purpose of this invention is to provide the rotary earthed switch that a kind of volume is little, the fracture spacing is little, safe and reliable.
The present invention adopts following technical proposals:
A kind of rotary earthed switch, comprise air insulation switch and vacuum fracture switch, described air insulation switch comprises the power set that rotate contact and power is provided for rotating contact action, described vacuum fracture switch is a vacuum interrupter with short circuit making capability, be provided with back-moving spring between the moving contact of described vacuum interrupter and its shell, described rotation contact is fixedly connected with power set by insulating bar.
Described power set comprise either-rotation motor, turbine worm, shift knob, and described either-rotation motor is by turbine worm connection of rotating contact.
Described rotation contact and insulating bar between be provided with rotating shaft.
The present invention is simple in structure, makes air insulation fracture switch and vacuum fracture switch carry out sequentially-operating by using transmission device, thereby has realized that rotary earthed switch closes when closing, and utilizes the vacuum fracture to close the splice grafting earth-current; When opening, utilize air fracture to guarantee insulation property, safer when rotary earthed switch is used.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of rotary earthed switch, comprise air insulation switch and vacuum fracture switch, described air insulation switch comprises the power set 8 that rotate contact 12 and power is provided for rotating contact 12 actions, described vacuum fracture switch is a vacuum interrupter 2 with short circuit making capability, is provided with back-moving spring 3 between the moving contact 22 of described vacuum interrupter 2 and its shell.Described vacuum interrupter generally has a moving contact 22 and a fixed contact 21 for the existing product that uses.
Described power set 8 comprise either-rotation motor, turbine worm, shift knob 10, and described shift knob 10 is used for the backward rotation of carrying out of control either-rotation motor.
Be provided with rotating shaft 11 between described rotation contact 12 and the insulating bar 7, rotate like this contact 12 and can carry out the transmission of ground connection conduction, can not affect the transmission device normal operation, and when insulating bar rises or descend, rotate contact 12 and can be undertaken clockwise or counterclockwise interlock by rotating shaft 11.
Described rotation contact 12 connects earth connection 9, and compresses conduction by the plane.It carries out clockwise or counterclockwise swing rotary at power set 8 by insulating bar 7 and rotating shaft 11.In the present embodiment, when rotation contact 12 turned clockwise, its contact, end can touch the moving contact 22 of vacuum interrupter 2, if vacuum interrupter 2 is arranged on the power set right side, then rotates contact 12 and is rotated counterclockwise.
During work, when close push-button switch 10 passes of rotary earthed switch, described either-rotation motor drives turbine worm and rotates, thereby scroll bar drives by insulating bar 7 and rotating shaft 11 and rotates contact 12 1 direction motion from lower position to high voltage cable, when rotation contact 12 touched the moving contact 22 of vacuum interrupter 2, transmission device continued to drive vacuum fracture switch closure and finishes landing operation.Concrete present embodiment: press the button switch 10; either-rotation motor drives turbine and horizontally rotates; scroll bar vertically rises under the effect of turbine; insulating bar 7 promotes to rotate contact 12 and moves upward; rotate like this contact 12 take power transmission shaft as rotating shaft; under the effect of insulating bar 7, rotate up; when rotating contact 12 rotating contacts to the moving contact 22 of vacuum interrupter 2; moving contact 22 can be synchronized with the movement by compression reseting spring 3; continue motion and promote vacuum interrupter 2 compression contacts back-moving springs 3 by transmission device the vacuum fracture to be closed to close the pass splice grafting of finishing whole high-tension circuit logical be that moving contact 22 contacts with fixed contact 21 when rotating contact 12; this moment, high-tension electricity was just by moving; fixed contact and rotation contact 12 are connected to earth connection, thereby finish ground protection.
When rotary earthed switch need to be opened, press the button switch 10, this moment, either-rotation motor can reverse, drive insulating bar 7 in the other direction motion by turbine worm this moment, rotating contact 12 can be rotated down, this moment is under the effect of contact back-moving spring 3, the vacuum fracture is that the sound contact in the vacuum extinction device is opened first, when rotating contact 12 motion disengagings with the moving contact contact point, air fracture also is opened, stop until rotation contact 12 moves to the fully open position, air fracture reaches larger safe insulation distance.
The present invention is not limited to above-mentioned concrete mode, and power set as described also can provide the device of power for other, makes the effect of rotating contact 12 motions as long as reach.
Claims (3)
1. rotary earthed switch, comprise air insulation switch and vacuum fracture switch, it is characterized in that: described air insulation switch comprises the power set that rotate contact and power is provided for rotating contact action, described vacuum fracture switch is a vacuum interrupter with short circuit making capability, be provided with back-moving spring between the moving contact of described vacuum interrupter and its shell, described rotation contact is fixedly connected with power set by insulating bar.
2. rotary earthed 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 is by turbine worm connection of rotating contact.
3. rotary earthed switch according to claim 1 is characterized in that: described rotation contact and insulating bar between be provided with rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100016931A CN103050329A (en) | 2013-01-05 | 2013-01-05 | Rotary grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100016931A CN103050329A (en) | 2013-01-05 | 2013-01-05 | Rotary grounding switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103050329A true CN103050329A (en) | 2013-04-17 |
Family
ID=48062936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100016931A Pending CN103050329A (en) | 2013-01-05 | 2013-01-05 | Rotary grounding switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103050329A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319159A (en) * | 2014-11-19 | 2015-01-28 | 电光防爆科技股份有限公司 | Three-phase isolating switch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2499960Y (en) * | 2001-09-29 | 2002-07-10 | 北京电研华源电力技术有限公司 | Outdoor high voltage vacuum load isolation switch |
| CN1892955A (en) * | 2005-06-29 | 2007-01-10 | 株式会社日立制作所 | Device for controlling the opening/closing operation of an electric switchgear |
| JP2009032611A (en) * | 2007-07-30 | 2009-02-12 | Hitachi Ltd | Vacuum insulation switch and vacuum insulation switch gear |
| CN102403668A (en) * | 2011-10-25 | 2012-04-04 | 沈阳华德海泰电器有限公司 | High-voltage combined electrical apparatus |
| CN203013603U (en) * | 2013-01-05 | 2013-06-19 | 许昌永新电气股份有限公司 | Rotary grounding switch |
-
2013
- 2013-01-05 CN CN2013100016931A patent/CN103050329A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2499960Y (en) * | 2001-09-29 | 2002-07-10 | 北京电研华源电力技术有限公司 | Outdoor high voltage vacuum load isolation switch |
| CN1892955A (en) * | 2005-06-29 | 2007-01-10 | 株式会社日立制作所 | Device for controlling the opening/closing operation of an electric switchgear |
| JP2009032611A (en) * | 2007-07-30 | 2009-02-12 | Hitachi Ltd | Vacuum insulation switch and vacuum insulation switch gear |
| CN102403668A (en) * | 2011-10-25 | 2012-04-04 | 沈阳华德海泰电器有限公司 | High-voltage combined electrical apparatus |
| CN203013603U (en) * | 2013-01-05 | 2013-06-19 | 许昌永新电气股份有限公司 | Rotary grounding switch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319159A (en) * | 2014-11-19 | 2015-01-28 | 电光防爆科技股份有限公司 | Three-phase isolating switch |
| CN104319159B (en) * | 2014-11-19 | 2016-03-23 | 电光防爆科技股份有限公司 | A kind of three-phase isolation switch |
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Application publication date: 20130417 |