CN103354191A - Device capable of preventing on-load operation of high-voltage isolating switch - Google Patents
Device capable of preventing on-load operation of high-voltage isolating switch Download PDFInfo
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- CN103354191A CN103354191A CN2013102741988A CN201310274198A CN103354191A CN 103354191 A CN103354191 A CN 103354191A CN 2013102741988 A CN2013102741988 A CN 2013102741988A CN 201310274198 A CN201310274198 A CN 201310274198A CN 103354191 A CN103354191 A CN 103354191A
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- isolating switch
- current
- armature
- coil
- tool bit
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- 238000004804 winding Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides a device capable of preventing on-load operation of a high-voltage isolating switch. The device capable of preventing on-load operation of the high-voltage isolating switch includes a current transformer, a current coil, an armature and a locking pin. A primary coil of the current transformer is connected with the isolating switch in series. A secondary coil of the current transformer is connected with the current coil. The current coil is fixed on a side of a static tool bit and a moving tool bit of the isolating switch. The armature is disposed in a cylindrical iron core of the current coil. One end of the locking pin is docked with the armature while the other end of the locking pin is corresponding to lock holes in the static tool bit and the moving tool bit of the isolating switch. A reset spring is arranged between the armature and the iron core of the current coil. The device capable of preventing on-load operation of the high-voltage isolating switch provided by the invention utilizes the current transformer for detecting load current flowing through the isolating switch. When the magnitude of the load current overpasses a set value, an electromagnet composed of the current coil and the armature controls the locking pin to act and the moving tool bit and the static tool bit are fixed together. Therefore, error operation is prevented effectively, so that safety of a high-voltage line and an operator is guaranteed.
Description
Technical field
The present invention relates to a kind of electric current that can be in the line and forbid the device that isolating switch disconnects when surpassing set point, belong to the electric switch technical field.
Background technology
Isolating switch is a kind of device for switching commonly used, be mainly used in disconnecting the high-tension circuit of zero load electric current, because isolating switch does not have special arc-control device, therefore can only in the situation that circuit disconnected just and can operate by circuit breaker, when the electric current that flows through isolating switch reaches certain value, if mistake is closed mistake minute isolating switch, arc light will occur, even cause serious security incident.
The conventional method that prevents the isolating switch misoperation is at equipment five anti-mechanical interlockings to be set, but because outdoor isolating switch is simple in structure, often can not realize effective mechanical interlocking, cause in the actual operation maintenance process, because of the accident frequent occurrence of operating personnel's carelessness on-load disconnecting switch operation.Therefore, how to prevent effectively that the on-load disconnecting switch operation from being the difficult problem that the relevant technologies personnel face always.
Summary of the invention
The object of the invention is to the drawback for prior art, a kind of device that prevents the operation of high voltage isolator on-load is provided, guarantee high-tension line and operating personnel's personal safety.
Problem of the present invention realizes with following technical proposals:
A kind of device that prevents the operation of high voltage isolator on-load, comprise current transformer in the formation, current coil, armature and lock pin, winding and the isolating switch of described current transformer are connected in series, the output termination current coil of its secondary winding, described current coil is fixed on quiet cutter head and the first side of moving knife of isolating switch, described armature places in the cylindrical core of current coil, one end of described lock pin docks with armature, the other end is corresponding with quiet cutter head and the lockhole on the dynamic cutter head of isolating switch, is provided with back-moving spring between the cylindrical core of armature and current coil.
The above-mentioned device that prevents the operation of high voltage isolator on-load, described current transformer is straight-through current transformer.
The present invention utilizes current transformer to detect the load current that flows through isolating switch, magnet control lock pin action by being consisted of by current coil and armature when load current surpasses set point, dynamic cutter head and quiet cutter head are fixed together, like this, as long as load current is arranged, just can effectively prevent the generation of misoperation, thereby guarantee high-tension line and operating personnel's safety.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is installation signal of the present invention;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is axonometric drawing.
Each label is among the figure: 1, isolating switch base, 2, current transformer, 3, current coil, 4, quiet cutter head, 5, dynamic cutter head, 6, post insulator, 7, lock pin, 8, back-moving spring, 9, armature.
Embodiment
Referring to Fig. 1～Fig. 3, the present invention is the locking device that utilizes electromagnetic induction principle to make, and can effectively prevent the on-load disconnecting switch operation.A winding string of current transformer 2 is in a circuit by isolating switch control, the electromagnet that is made of current coil 3 and armature 9 is fixedly mounted on quiet cutter head 4 and dynamic cutter head 5 one sides of isolating switch, and armature 9 actions later on can be by the dynamic cutter head 5 of lock pin 7 locking isolating switches.When current transformer 2 secondary sides have induced current, armature 9 actions in the drive current coil 3, locking dynamic cutter head 5.The principle of current coil 3 actions is behind coil electricity, its cylindrical core and armature 9 are magnetized, become opposite polarity two blocks of magnet, produce electromagnetic attraction between them, when suction during greater than the reaction force of back-moving spring 8, armature 9 beginnings are towards direction motion unshakable in one's determination, and driving lock pin 7 can't operate it with isolating-switch locking (lock pin 7 inserts in the lockhole of quiet cutter heads 4 and dynamic cutter head 5).When the electric current in the coil during less than certain certain value or interruption of power supply, electromagnetic attraction is less than the reaction force of back-moving spring 8, and armature 9 will return original position under the effect of the reaction force of back-moving spring 8, remove the locking of isolating switch.
Claims (2)
1. device that can prevent high voltage isolator on-load operation, it is characterized in that, it comprises current transformer (2), current coil (3), armature (9) and lock pin (7), winding and the isolating switch of described current transformer (2) are connected in series, the output termination current coil (3) of its secondary winding, described current coil (3) is fixed on quiet cutter head (4) and dynamic cutter head (5) one sides of isolating switch, described armature (9) places in the cylindrical core of current coil (3), one end of described lock pin (7) docks with armature (9), the other end is corresponding with quiet cutter head (4) and the lockhole on the dynamic cutter head (5) of isolating switch, is provided with back-moving spring (8) between the cylindrical core of armature (9) and current coil (3).
2. the device that prevents the operation of high voltage isolator on-load according to claim 1 is characterized in that, described current transformer (2) is straight-through current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310274198.8A CN103354191B (en) | 2013-07-02 | 2013-07-02 | A kind of device preventing high voltage isolator on-load operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310274198.8A CN103354191B (en) | 2013-07-02 | 2013-07-02 | A kind of device preventing high voltage isolator on-load operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103354191A true CN103354191A (en) | 2013-10-16 |
| CN103354191B CN103354191B (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310274198.8A Expired - Fee Related CN103354191B (en) | 2013-07-02 | 2013-07-02 | A kind of device preventing high voltage isolator on-load operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103354191B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161347A (en) * | 2015-10-19 | 2015-12-16 | 夏烬楚 | Interlock isolating switch used for 110 kV electric network |
| CN105206467A (en) * | 2015-10-19 | 2015-12-30 | 夏烬楚 | False disconnection preventing disconnector for 110 kV power grid |
| CN105206463A (en) * | 2015-10-19 | 2015-12-30 | 夏烬楚 | False grounding preventing isolating switch for 110 kV power grid |
| CN105225881A (en) * | 2015-10-19 | 2016-01-06 | 夏烬楚 | For the isolating switch anti-error system of 110kV electrical network |
| CN105225880A (en) * | 2015-10-19 | 2016-01-06 | 夏烬楚 | A kind of anti-error isolating switch for 110kV electrical network |
| CN105390327A (en) * | 2015-10-19 | 2016-03-09 | 夏烬楚 | Isolating switch error control preventing method for 110kV power grid |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5371646A (en) * | 1991-01-16 | 1994-12-06 | Felten & Guilleaume Austria Ag | Ground fault circuit interrupter |
| CN201369514Y (en) * | 2009-03-30 | 2009-12-23 | 张东升 | Novel live blocking device |
| CN201584318U (en) * | 2009-12-18 | 2010-09-15 | 顾世峰 | Direct-measuring type device preventing pulling of knife gate with load |
| CN201886949U (en) * | 2010-11-02 | 2011-06-29 | 厦门电力成套设备有限公司 | Strong-current locking device for earth switch of high-voltage switch cabinet |
| CN102629524A (en) * | 2012-03-16 | 2012-08-08 | 山东卓尔电气有限公司 | Anti-misoperation knife switch |
-
2013
- 2013-07-02 CN CN201310274198.8A patent/CN103354191B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5371646A (en) * | 1991-01-16 | 1994-12-06 | Felten & Guilleaume Austria Ag | Ground fault circuit interrupter |
| CN201369514Y (en) * | 2009-03-30 | 2009-12-23 | 张东升 | Novel live blocking device |
| CN201584318U (en) * | 2009-12-18 | 2010-09-15 | 顾世峰 | Direct-measuring type device preventing pulling of knife gate with load |
| CN201886949U (en) * | 2010-11-02 | 2011-06-29 | 厦门电力成套设备有限公司 | Strong-current locking device for earth switch of high-voltage switch cabinet |
| CN102629524A (en) * | 2012-03-16 | 2012-08-08 | 山东卓尔电气有限公司 | Anti-misoperation knife switch |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161347A (en) * | 2015-10-19 | 2015-12-16 | 夏烬楚 | Interlock isolating switch used for 110 kV electric network |
| CN105206467A (en) * | 2015-10-19 | 2015-12-30 | 夏烬楚 | False disconnection preventing disconnector for 110 kV power grid |
| CN105206463A (en) * | 2015-10-19 | 2015-12-30 | 夏烬楚 | False grounding preventing isolating switch for 110 kV power grid |
| CN105225881A (en) * | 2015-10-19 | 2016-01-06 | 夏烬楚 | For the isolating switch anti-error system of 110kV electrical network |
| CN105225880A (en) * | 2015-10-19 | 2016-01-06 | 夏烬楚 | A kind of anti-error isolating switch for 110kV electrical network |
| CN105390327A (en) * | 2015-10-19 | 2016-03-09 | 夏烬楚 | Isolating switch error control preventing method for 110kV power grid |
| CN105225880B (en) * | 2015-10-19 | 2018-11-06 | 夏烬楚 | A kind of anti-error disconnecting switch for 110kV power grids |
| CN105206463B (en) * | 2015-10-19 | 2018-11-06 | 夏烬楚 | A kind of false grounding prevention isolating switch for 110kV power grids |
| CN105161347B (en) * | 2015-10-19 | 2018-11-27 | 浙江国正安全技术有限公司 | A kind of interlocking disconnecting switch for 110kv power grid |
| CN105206467B (en) * | 2015-10-19 | 2019-07-19 | 夏烬楚 | A kind of anti-error disconnection disconnecting switch for 110kv power grid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103354191B (en) | 2016-04-13 |
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| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 071051 Hebei Province, Baoding City Heng Road No. 118 Applicant after: DINYOUNG POWER TECHNOLOGY SERVICES CO., LTD. Address before: 071051 Hebei Province, Baoding City Heng Road No. 118 Applicant before: Baoding Dingyang Power Technology Development Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: BAODING DINGYANG POWER TECHNOLOGY DEVELOPMENT CO., LTD. TO: DINYOUNG ELECTRONIC TECHNOLOGY SERVICE CO., LTD. |
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| CB03 | Change of inventor or designer information |
Inventor after: Zhang Guoxing Inventor after: Qiao Xuejun Inventor after: Shen Xueliang Inventor after: Li Chao Inventor after: Liu Tao Inventor before: Zhang Guoxing Inventor before: Li Jinliang Inventor before: Liu Tao |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 071051 Hebei Province, Baoding City Heng Road No. 118 Patentee after: Ding Yang, Zhi Hui, Polytron Technologies Inc Address before: 071051 Hebei Province, Baoding City Heng Road No. 118 Patentee before: DINYOUNG POWER TECHNOLOGY SERVICES CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20210702 |