CN103311812A - Combined electrical apparatus with isolation switch, vacuum breaker and earthing switch - Google Patents
Combined electrical apparatus with isolation switch, vacuum breaker and earthing switch Download PDFInfo
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- CN103311812A CN103311812A CN2013102654833A CN201310265483A CN103311812A CN 103311812 A CN103311812 A CN 103311812A CN 2013102654833 A CN2013102654833 A CN 2013102654833A CN 201310265483 A CN201310265483 A CN 201310265483A CN 103311812 A CN103311812 A CN 103311812A
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Abstract
The invention discloses a combined electrical apparatus with an isolation switch, a vacuum breaker and an earthing switch. The combined electrical apparatus comprises a machine frame, wherein three bus wire inlet columns are fixed on the upper portion of the machine frame, an insulation rotating shaft is pivoted on the upper middle portion of the machine frame, and three isolation knife switches are arranged on the insulation rotating shaft. Three fixedly sealed poles are arranged in the middle of the machine frame, and each fixedly sealed pole comprises an insulation casing, a vacuum arc-extinguishing chamber, a wire inlet column and a wire outlet column. Each vacuum arc-extinguishing chamber is provided with an operation pull rod, an earthing contact is arranged on the lateral surface of each wire outlet column, the middle of an insulation connection rod is hinged to the lower portion of each insulation casing, one end of the insulation connection rod is hinged to the lower end of each pull rod, and the other end of the insulation connection rod is hinged to an over-travel rod. The lower end of each isolation knife switch is hinged to the upper end of the wire inlet column of each fixedly sealed pole. A breaker operation shaft is pivoted onto the machine frame located on the side of the three fixedly sealed poles. An earthing rotating shaft is pivoted on the middle lower portion of the machine frame, and an operation mechanism is arranged on one side of the machine frame. The combined electrical apparatus is compact in structure, small in volume, simple in the transmission mechanism and high in operation reliability.
Description
Technical field
The present invention relates to the switching device that indoor switch cabinet is used, especially a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch.
Background technology
Present domestic-developed 12kV switch cubicle, vacuum circuit-breaker, isolating switch, earthed switch adopt independent the installation, there are the shortcomings such as the switch cubicle volume is large, interlocking is complicated, the copper bar consumption is many, the connection contact is many, complicated operation, maintenance trouble, domestic also have a little producer to release the band isolated vacuum breaker, but majority is to reequip on the basis of the breaker mechanism of the horizontal dress of tradition, it is obvious that it pieces together phenomenon, exist volume large, the problem of transmission complexity, bringing simultaneously defect is that reliability is low, the maintenance trouble.
Although disclosed a patent No. on December 30th, 2009 and be the patent of invention that ZL200920035512.6, name are called " isolating switch and vacuum circuit-breaker combined electrical apparatus ", it comprises isolating switch section, vacuum circuit-breaker section, grounding parts, operation locking part and frame, but isolating switch section is arranged on a side of vacuum circuit-breaker section, and grounding parts is arranged on the opposite side of vacuum circuit-breaker section; There is the more roomy problem of volume equally in this structure, is unfavorable for the miniaturization of switch cubicle.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch, compact conformation, and volume is little, be conducive to the miniaturization of switch cubicle, transmission mechanism is simple simultaneously, interlocks perfect, and operating reliability is high and maintenance is convenient.
For achieving the above object, technical scheme of the present invention is: a kind of with isolating switch, vacuum circuit-breaker, the combined electrical apparatus of earthed switch, comprise frame, three bus inlet wire posts are fixed at the interval, top of frame, the lower end of each bus inlet wire post is the inlet wire fixed contact, the middle and upper part of frame articulates an insulation rotating shaft, three isolation switchs are equipped with at the interval in the insulation rotating shaft, the position of three isolation switchs is corresponding with three bus inlet wire posts, three poles are equipped with at the middle part of frame, each pole comprises insulation shell, vacuum interrupter, the inlet wire post, outlet column, vacuum interrupter is clipped in the centre of insulation shell, the pull bar that vacuum interrupter is equipped with an operation combination or disconnects, the moved end, bottom of described pull bar and vacuum interrupter is connected, the inlet wire post stretches into insulation shell and is connected with the vacuum interrupter upper end from the top of insulation shell, the bottom that outlet column is supported on insulation shell is flexible coupling by copper and is connected with the moved end, bottom of vacuum interrupter, the side of outlet column is provided with earthing contact, the middle part of one insulated connecting rod is hinged on the bottom of insulation shell, insulated connecting rod is hinged near an end of insulation shell and the lower end of pull bar, and insulated connecting rod is hinged with an excess of stroke bar away from the other end of insulation shell; The upper end of the inlet wire post of the lower end of each isolation switch and each pole is hinged; Articulate a breaker operator axle on the frame of three pole one sides, the interval arranges three projections on the breaker operator axle, the top of the described excess of stroke bar on the free end that each is protruding and each pole is articulated, and upper end and the frame among of the described excess of stroke bar on each pole are equipped with an extension spring; The middle and lower part of frame articulates a ground connection rotating shaft, and the interval is fixed three grounding switchs and engaged with earthing contact on three pole outlet column or separate in the ground connection rotating shaft; One side of frame is equipped with an operating mechanism, and operating mechanism is provided with an output revolving shaft and is connected to drive the rotation of breaker operator axle and location with the breaker operator axle; The opposite side of frame arranges the first connecting lever and the second connecting lever, and an end of the first connecting lever and ground connection rotating shaft fixes, the second connecting lever fixes with an end of insulation rotating shaft, and the free end of the first connecting lever is connected by first connecting rod with the free end of the second connecting lever.
Further improve, excess of stroke stage clip is equipped with in the centre of the described excess of stroke bar on each pole.Effectively guarantee the reliability of vacuum interrupter bonding state.
Further improve, wherein two grounding switchs and the frame among of three grounding switchs are equipped with first retainer spring.The location of convenient three grounding switchs.
Further improve, the middle and upper part of the insulation shell of each pole is provided with a circle and is roughly square flange, and the described flange on three poles also forms insulating barrier together.The isolation of Convenient switch cabinet bus-bar room and switch gear room.
Further improve, an end of the free end of the second connecting lever and a L shaped positioning linkage rod is hinged, and the middle part of L shaped positioning linkage rod is hinged on the side of frame, and the second retainer spring also is housed between the other end of L shaped positioning linkage rod and the frame.The location of convenient insulation rotating shaft.
Further improve, opposite side away from the frame of operating mechanism arranges the 3rd connecting lever and the 4th connecting lever, one end of the 3rd connecting lever and breaker operator axle fixes, the 4th connecting lever is articulated on the side of the frame between breaker operator axle and the ground connection rotating shaft, the free end of the 3rd connecting lever is connected by second connecting rod with the free end of the 4th connecting lever, the outer peripheral face of the 4th connecting lever is provided with two detents, the outer peripheral face of the first connecting lever also is provided with two detents, a hinged activity orientation piece on the frame between the first connecting lever and the 4th connecting lever, activity orientation piece match with the detent of the 4th connecting lever and the first connecting lever respectively.Be grounded the interlock function of rotating shaft and breaker operator axle, further improve the reliability of operation, prevent misoperation.
Further improve, the output revolving shaft on the described operating mechanism is connected by spline housing with the breaker operator axle.The installing/dismounting of handled easily mechanism makes operating mechanism realize modularization.
Further improve, the top of frame arranges first an insulation crossbeam, and three bus inlet wire intercolumniations are every being fixed on the insulation crossbeam.Fixing of convenient three bus inlet wire posts.
Preferred described operating mechanism comprises a housing, the output revolving shaft of operating mechanism is contained on the housing, the housing of operating mechanism fixes by bolt and frame, and described housing is provided with the ground connection handle hole, and an end of ground connection rotating shaft is through on the ground connection handle hole of described housing; Further, one operation rotating shaft also is housed on the housing of described operating mechanism, one energy storage rotating shaft, the operation rotating shaft, the energy storage rotating shaft, output revolving shaft is parallel to each other, the operation rotating shaft is connected by a pair of gear with the energy storage rotating shaft, between the rear portion of energy storage rotating shaft and the described housing energy storage extension spring is housed, cam also is housed in the energy storage rotating shaft, keep sincere son, output toggle arm is housed on the output revolving shaft, keep roller, the output roller is housed on the output toggle arm, output roller by output toggle arm on the energy storage rotating shaft overhead cam bump output revolving shaft realizes that output revolving shaft rotates, when output revolving shaft forwards certain position to, the sincere son of the maintenance in the energy storage rotating shaft withstands the location that the maintenance roller on the output revolving shaft is realized output revolving shaft.This operating mechanism convenient and reliable operation is conducive to realize miniaturization.
The present invention has the following advantages with respect to existing combined electrical apparatus with vacuum circuit-breaker and isolation earthing switch:
1, pole is hinged on the bottom of insulation shell by the middle part of an insulated connecting rod, insulated connecting rod is hinged near an end of insulation shell and the lower end of pull bar, so that the operating mechanism of vacuum interrupter can be in the side of vacuum interrupter, than the traditional operation mechanism that is in below the vacuum interrupter whole pole height is shortened dramatically; The layout of convenient whole pole is installed, the upper end of the inlet wire post of the lower end of each isolation switch and each pole is hinged simultaneously, realize that isolating switch is connected with the zero distance of circuit breaker, so overall structure is very compact, volume is little, is conducive to the miniaturization of switch cubicle;
2, transmission is simple, and the output revolving shaft of operating mechanism has just been finished with side and filled being in transmission connection of circuit breaker by the operating axis of spline housing connecting breaker;
3, realize the function of circuit breaker, isolating switch, the operation of earthed switch follow procedure, breaker operator axle and ground connection rotating shaft can realize interlocking, and interlock is comparatively perfect, improves the reliability of integrated operation;
4, operating mechanism is realized modularization, Whole-dismountable and installation, and maintenance is convenient;
5, pole is made by APG technique, utilizes epoxy resin that vacuum interrupter and upper lower wire end are all sealed.Do like this, not only dwindled the arc control device size, and the thorough impact that is not subjected to external environment such as dust, moisture etc., improved weatherability, this moment epoxy resin not only as once the part main insulation, and be its mechanical support, its Electric Field Distribution and stress distribution are better than the insulating barrier structure of various shapes.Because the securing member that arc control device need not add, current-carrying spare is fixed on its position securely by casting resin on every side, and this has just greatly reduced the number of components of arc control device, and maintenance is easier, and the life-span is longer.
Description of drawings
Fig. 1 is front view of the present invention;
Fig. 2 is right view of the present invention;
Fig. 3 is left view of the present invention;
Fig. 4 is rearview of the present invention;
Fig. 5 is stereogram of the present invention;
Fig. 6 is the axial cutaway view Amplified image of pole of the present invention;
Fig. 7 is operating mechanism backsight enlarged drawing of the present invention;
Fig. 8 is operating mechanism end view of the present invention;
Fig. 9 is the installation diagram of energy storage rotating shaft of the present invention.
Embodiment
Below in conjunction with accompanying drawing and concrete execution mode the present invention is described in further detail.
Fig. 1 is to shown in Figure 9, a kind of with isolating switch, vacuum circuit-breaker, the combined electrical apparatus of earthed switch, comprise frame 1, three bus inlet wire posts 2 are fixed at the interval, top of frame 1, be specially an insulation crossbeam 11 is set first on the top of frame 1, three bus inlet wire post 2 intervals are fixed on the insulation crossbeam 11, the lower end of each bus inlet wire post 2 is the inlet wire fixed contact, the middle and upper part of frame 1 articulates an insulation rotating shaft 3, three isolation switchs 31 are equipped with at the interval in the insulation rotating shaft 3, the position of three isolation switchs 31 is corresponding with three bus inlet wire posts 2, three poles 4 are equipped with at the middle part of frame 1 side by side, each pole 4 comprises insulation shell 41, vacuum interrupter 42, inlet wire post 43, outlet column 44, vacuum interrupter 42 is clipped in the centre of insulation shell 41, the pull bar 45 that vacuum interrupter 42 is equipped with an operation combination or disconnects, the moved end, bottom of described pull bar 45 and vacuum interrupter 42 is connected, inlet wire post 43 stretches into insulation shell 41 and is connected with vacuum interrupter 42 upper ends from the top of insulation shell 41, the bottom that outlet column 44 is supported on insulation shell 41 is flexible coupling by copper and 49 is connected with the lower end of vacuum interrupter 42, the side of outlet column 44 is provided with earthing contact 441, the middle part of one insulated connecting rod 46 is hinged on the bottom of insulation shell 41, insulated connecting rod 46 is hinged near an end of insulation shell 41 and the lower end of pull bar 45, and insulated connecting rod 46 is hinged with an excess of stroke bar 47 away from the other end of insulation shell 41.
Excess of stroke stage clip 48 is equipped with in the centre of described excess of stroke bar 47.
The upper end of the inlet wire post 43 of the lower end of each isolation switch 31 and each pole 4 is hinged.
Articulate a breaker operator axle 5 on the frame 1 of three pole 4 one sides, the interval arranges three projections 51 on the breaker operator axle 5, the top of the described excess of stroke bar 47 on the free end of each projection 51 and each pole 4 is articulated, and the upper end of the described excess of stroke bar 47 on each pole 4 and frame 1 among are equipped with an extension spring 6.
The middle and lower part of frame 1 articulates a ground connection rotating shaft 7, and the interval is fixed three grounding switchs 71 and combined with earthing contact 441 on three poles, 4 outlet column 44 or separate in the ground connection rotating shaft 7.
One side of frame 1 is equipped with an operating mechanism 8, and operating mechanism 8 is provided with an output revolving shaft 81 and is connected to drive 5 rotations of breaker operator axle and location with breaker operator axle 5; Output revolving shaft 81 can be connected by spline housing with breaker operator axle 5.
Preferred described operating mechanism 8 comprises a housing 82, the output revolving shaft 81 of operating mechanism 8 is contained on the housing 82, the housing 82 of operating mechanism 8 fixes by bolt and frame 1, described housing 82 is provided with ground connection handle hole 821, and an end of ground connection rotating shaft 7 is through on the ground connection handle hole 821 of described housing 82.
One operation rotating shaft 83 also is housed on the housing 82 of described operating mechanism 8, one energy storage rotating shaft 84, operation rotating shaft 83, energy storage rotating shaft 84, output revolving shaft 81 is parallel to each other, operation rotating shaft 83 is connected by a pair of gear with energy storage rotating shaft 84, between the rear portion of energy storage rotating shaft 84 and the described housing 82 energy storage extension spring 85 is housed, cam 841 also is housed in the energy storage rotating shaft 84, keep sincere sub 842, output toggle arm 811 is housed on the output revolving shaft 81, keep roller 812, output roller 813 is housed on the output toggle arm 811, output roller 813 by output toggle arm 811 on the energy storage rotating shaft 84 overhead cams 841 bump output revolving shafts 81 realizes that output revolving shaft 81 rotates, when output revolving shaft 81 forwards certain position to, the location that the maintenance roller 812 on the output revolving shaft 81 is realized output revolving shaft 81 is withstood in maintenance in the energy storage rotating shaft 84 sincere sub 842, makes output revolving shaft 81 remain closing position.
The end that the opposite side of frame 1 arranges the first connecting lever 91, the second connecting lever 92, the 3rd connecting lever 93 and the 4th connecting lever 94, the first connecting levers 91 and ground connection rotating shaft 7 fixes, an end of the second connecting lever 92 and insulation rotating shaft 3 fixes, an end of the 3rd connecting lever 93 and breaker operator axle 5 fixes, the 4th connecting lever 94 is articulated on the side of the frame 1 between breaker operator axle 5 and the ground connection rotating shaft 7.
The free end of the free end of the first connecting lever 91 and the second connecting lever 92 is connected by first connecting rod 95; One end of the free end of the second connecting lever 92 and a L shaped positioning linkage rod 921 is hinged, and the middle part of L shaped positioning linkage rod 921 is hinged on the side of frame 1, and the second retainer spring 922 also is housed between the other end of L shaped positioning linkage rod 921 and the frame 1.
The free end of the free end of the 3rd connecting lever 93 and the 4th connecting lever 94 is connected by second connecting rod 96; The outer peripheral face of the 4th connecting lever 94 is provided with two detents 941, the outer peripheral face of the first connecting lever 91 also is provided with two detents 911, a hinged activity orientation piece 90 on the frame 1 between the first connecting lever 91 and the 4th connecting lever 94, activity orientation piece 90 match with the detent 941 of the 4th connecting lever 94 and the detent 911 of the first connecting lever 91 respectively.
Wherein two grounding switchs 71 that are in both sides in three grounding switchs 71 are equipped with first retainer spring 72 with frame 1 among.
The middle and upper part of the insulation shell 41 of each pole 4 is provided with a circle and is roughly the described flange 411 on 411, three poles 4 of square flange and forms insulating barrier together.
Operating process of the present invention is by rotating ground connection rotating shaft 7, to drive insulation rotating shaft 3 by the first connecting lever 91, first connecting rod 95, the second connecting lever 92 again and rotate combined floodgate and the separating brake of realizing isolating switch; Output revolving shaft 81 by operating mechanism 8 drives combination or the disconnection that breaker operator axle 5 rotated and cooperated by extension spring 6 vacuum interrupter 42 on the realization pole 4; When rotation ground connection rotating shaft 7 makes three isolation switchs 31 and three bus inlet wire posts 2 in conjunction with combined floodgate, earthing contact 441 on three grounding switchs 71 and three pole 4 outlet column 44 is in released state, in the detent 911 of activity orientation piece 90 embeddings this moment the first connecting lever 91, the 4th connecting lever 94 is free to rotate, can realize combination or the disconnection of vacuum interrupter 42 on the pole 4 this moment by the output revolving shaft 81 of operating mechanism 8, when vacuum interrupter 42 is in bonding state on the pole 4, activity orientation piece 90 is stuck on the 4th connecting lever 94 outer peripheral faces, the first connecting lever 91 can not rotate, grounding misoperation when preventing that vacuum interrupter 42 is in bonding state; When vacuum interrupter on the pole 4 42 disconnects, activity orientation piece 90 embeds in the detent 941 of the 4th connecting lever 94, this moment, the first connecting lever 91 was free to rotate, just can rotate ground connection rotating shaft 7 make the isolating switch separating brake and make simultaneously three grounding switchs 71 and three pole 4 outlet column 44 on earthing contact 441 combinations be in ground state.
Below only be preferred embodiment of the present invention, the change that those skilled in the art does to be equal to by claim all falls into the protection range of this case.
Claims (10)
1. one kind with isolating switch, vacuum circuit-breaker, the combined electrical apparatus of earthed switch, comprise frame, three bus inlet wire posts are fixed at the interval, top of frame, the lower end of each bus inlet wire post is the inlet wire fixed contact, the middle and upper part of frame articulates an insulation rotating shaft, three isolation switchs are equipped with at the interval in the insulation rotating shaft, the position of three isolation switchs is corresponding with three bus inlet wire posts, it is characterized in that: three poles are equipped with at the middle part of frame, each pole comprises insulation shell, vacuum interrupter, the inlet wire post, outlet column, vacuum interrupter is clipped in the centre of insulation shell, the pull bar that vacuum interrupter is equipped with an operation combination or disconnects, the moved end, bottom of described pull bar and vacuum interrupter is connected, the inlet wire post stretches into insulation shell and is connected with the vacuum interrupter upper end from the top of insulation shell, the bottom that outlet column is supported on insulation shell is flexible coupling by copper and is connected with the moved end, bottom of vacuum interrupter, the side of outlet column is provided with earthing contact, the middle part of one insulated connecting rod is hinged on the bottom of insulation shell, insulated connecting rod is hinged near an end of insulation shell and the lower end of pull bar, and insulated connecting rod is hinged with an excess of stroke bar away from the other end of insulation shell;
The upper end of the inlet wire post of the lower end of each isolation switch and each pole is hinged;
Articulate a breaker operator axle on the frame of three pole one sides, the interval arranges three projections on the breaker operator axle, the top of the described excess of stroke bar on the free end that each is protruding and each pole is articulated, and upper end and the frame among of the described excess of stroke bar on each pole are equipped with an extension spring;
The middle and lower part of frame articulates a ground connection rotating shaft, and the interval is fixed three grounding switchs and engaged with earthing contact on three pole outlet column or separate in the ground connection rotating shaft;
One side of frame is equipped with an operating mechanism, and operating mechanism is provided with an output revolving shaft and is connected to drive the rotation of breaker operator axle and location with the breaker operator axle;
The opposite side of frame arranges the first connecting lever and the second connecting lever, and an end of the first connecting lever and ground connection rotating shaft fixes, the second connecting lever fixes with an end of insulation rotating shaft, and the free end of the first connecting lever is connected by first connecting rod with the free end of the second connecting lever.
2. a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch according to claim 1, it is characterized in that: excess of stroke stage clip is equipped with in the centre of the described excess of stroke bar on each pole.
3. a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch according to claim 1 is characterized in that: wherein two grounding switchs and the frame among of three grounding switchs are equipped with first retainer spring.
4. a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch according to claim 1, it is characterized in that: the middle and upper part of the insulation shell of each pole is provided with a circle and is roughly square flange, and the described flange on three poles also forms insulating barrier together.
5. a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch according to claim 1, it is characterized in that: an end of the free end of the second connecting lever and a L shaped positioning linkage rod is hinged, the middle part of L shaped positioning linkage rod is hinged on the side of frame, and the second retainer spring also is housed between the other end of L shaped positioning linkage rod and the frame.
6. according to claim 1 a kind of with isolating switch, vacuum circuit-breaker, the combined electrical apparatus of earthed switch, it is characterized in that: the opposite side away from the frame of operating mechanism arranges the 3rd connecting lever and the 4th connecting lever, one end of the 3rd connecting lever and breaker operator axle fixes, the 4th connecting lever is articulated on the side of the frame between breaker operator axle and the ground connection rotating shaft, the free end of the 3rd connecting lever is connected by second connecting rod with the free end of the 4th connecting lever, the outer peripheral face of the 4th connecting lever is provided with two detents, the outer peripheral face of the first connecting lever also is provided with two detents, a hinged activity orientation piece on the frame between the first connecting lever and the 4th connecting lever, activity orientation piece match with the detent of the 4th connecting lever and the first connecting lever respectively.
7. a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch according to claim 1, it is characterized in that: the output revolving shaft on the described operating mechanism is connected by spline housing with the breaker operator axle.
8. a kind of combined electrical apparatus with isolating switch, vacuum circuit-breaker, earthed switch according to claim 1 is characterized in that: the top of frame arranges first an insulation crossbeam, and three bus inlet wire intercolumniations are every being fixed on the insulation crossbeam.
9. according to claim 1 to 8 each described a kind of combined electrical apparatuses with isolating switch, vacuum circuit-breaker, earthed switch, it is characterized in that: described operating mechanism comprises a housing, the output revolving shaft of operating mechanism is contained on the housing, the housing of operating mechanism fixes by bolt and frame, described housing is provided with the ground connection handle hole, and an end of ground connection rotating shaft is through on the ground connection handle hole of described housing.
10. according to claim 9 a kind of with isolating switch, vacuum circuit-breaker, the combined electrical apparatus of earthed switch, it is characterized in that: an operation rotating shaft also is housed on the housing of described operating mechanism, one energy storage rotating shaft, the operation rotating shaft, the energy storage rotating shaft, output revolving shaft is parallel to each other, the operation rotating shaft is connected by a pair of gear with the energy storage rotating shaft, between the rear portion of energy storage rotating shaft and the described housing energy storage extension spring is housed, cam also is housed in the energy storage rotating shaft, keep sincere son, output toggle arm is housed on the output revolving shaft, keep roller, the output roller is housed on the output toggle arm, output roller by output toggle arm on the energy storage rotating shaft overhead cam bump output revolving shaft realizes that output revolving shaft rotates, when output revolving shaft forwards certain position to, the sincere son of the maintenance in the energy storage rotating shaft withstands the location that the maintenance roller on the output revolving shaft is realized output revolving shaft.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310265483.3A CN103311812B (en) | 2013-06-28 | 2013-06-28 | Combined electrical apparatus with isolation switch, vacuum breaker and earthing switch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310265483.3A CN103311812B (en) | 2013-06-28 | 2013-06-28 | Combined electrical apparatus with isolation switch, vacuum breaker and earthing switch |
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| CN103311812A true CN103311812A (en) | 2013-09-18 |
| CN103311812B CN103311812B (en) | 2015-07-15 |
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Cited By (7)
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| CN106992461A (en) * | 2017-06-06 | 2017-07-28 | 北京合纵科技股份有限公司 | A kind of environment-friendly type Switch main body |
| CN107180713A (en) * | 2017-07-26 | 2017-09-19 | 安徽中电兴发与鑫龙科技股份有限公司 | A kind of vacuum circuit breaker constructions |
| CN109038347A (en) * | 2018-08-21 | 2018-12-18 | 南通东源电力智能设备有限公司 | A kind of intelligent environmental protection type Inflatable ring main unit |
| CN109065405A (en) * | 2018-09-25 | 2018-12-21 | 江苏南瑞帕威尔电气有限公司 | A kind of pole |
| CN109346375A (en) * | 2018-10-23 | 2019-02-15 | 深圳市英豪电力科技有限公司 | A kind of killer switch |
| CN115663672A (en) * | 2022-11-14 | 2023-01-31 | 黄华集团有限公司 | Upper and lower double-isolation air insulation switch cabinet |
| CN114256010B (en) * | 2021-11-15 | 2024-04-09 | 双杰电气合肥有限公司 | Pole for normal pressure sealing switch and normal pressure sealing switch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106992461A (en) * | 2017-06-06 | 2017-07-28 | 北京合纵科技股份有限公司 | A kind of environment-friendly type Switch main body |
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| CN109065405A (en) * | 2018-09-25 | 2018-12-21 | 江苏南瑞帕威尔电气有限公司 | A kind of pole |
| CN109346375A (en) * | 2018-10-23 | 2019-02-15 | 深圳市英豪电力科技有限公司 | A kind of killer switch |
| CN114256010B (en) * | 2021-11-15 | 2024-04-09 | 双杰电气合肥有限公司 | Pole for normal pressure sealing switch and normal pressure sealing switch |
| CN115663672A (en) * | 2022-11-14 | 2023-01-31 | 黄华集团有限公司 | Upper and lower double-isolation air insulation switch cabinet |
| CN115663672B (en) * | 2022-11-14 | 2023-06-23 | 黄华集团有限公司 | Upper-lower double-isolation air insulation switch cabinet |
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| CN103311812B (en) | 2015-07-15 |
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Address after: Room 103, No. 131 Nanshan Garden Middle Road, Bihu Town, Liandu District, Lishui City, Zhejiang Province Patentee after: Zhejiang Tianrun Electric Co., Ltd. Address before: Room 103, No. 131 Nanshan Garden Middle Road, Bihu Town, Liandu District, Lishui City, Zhejiang Province Patentee before: Zhejiang Tianrun Electric Power Technology Co., Ltd. |