CN109326479A - A kind of earthing switch and its operating mechanism, drive mechanism - Google Patents
A kind of earthing switch and its operating mechanism, drive mechanism Download PDFInfo
- Publication number
- CN109326479A CN109326479A CN201710647076.7A CN201710647076A CN109326479A CN 109326479 A CN109326479 A CN 109326479A CN 201710647076 A CN201710647076 A CN 201710647076A CN 109326479 A CN109326479 A CN 109326479A
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- moving contact
- crank
- contact
- earthing switch
- 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/003—Earthing switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
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- Gas-Insulated Switchgears (AREA)
Abstract
The present invention relates to a kind of earthing switch and its operating mechanisms, drive mechanism.Earthing switch includes operating mechanism, operating mechanism includes driving device and drive mechanism, drive mechanism includes crank, the round end of crank is hinged with connecting rod, the hinge joint of crank and connecting rod is located at the middle part of connecting rod, it is moved on guide rail one end of connecting rod, the other end is hinged with moving contact, the rotation center of the tie point of connecting rod and guide rail, the hinge joint of connecting rod and moving contact and crank is respectively positioned on using the hinge joint of crank and connecting rod as on the same circle in the center of circle, the extending direction of guide rail and the movement routine of moving contact are perpendicular.Earthing switch of the present invention is by the restriction to connecting rod one end motion profile to which the motion profile of the hinge joint to connecting rod and moving contact is defined, connecting rod not will lead to moving contact in driving moving contact reciprocating movement and tilt in movable contact block, so as to avoid moving contact during high speed exercise because there is the phenomenon that clamping stagnation with movable contact block caused by inclination.
Description
Technical field
The present invention relates to a kind of earthing switch and its operating mechanisms, drive mechanism.
Background technique
In grid power transmission field, generally existing multiple-loop line transmission line of electricity, when wherein a back transmission line breaks down
Be cut off maintenance when, due to the effect of electrostatic induction and electromagnetic coupling, can be generated in the fault loop biggish induced current and
Induced voltage, the voltage and current that this induction generates can not only cause damages to equipment, but also be easy to cause Field Force
Induced electricity electric shock accidents brings risk to power grid security production and operation.For this problem, at present frequently with measure be
Earthing switch is set on transmission line of electricity, it, will be in fault loop by earthing switch after transmission line of electricity, which breaks down, to be cut off
Inductive voltage and current introduces the earth.Existing earthing switch is generally open type earthing switch, including moving contact and with it is defeated
The static contact of electric line connection, the driving of moving contact driven-mechanism can move on the direction close to and far from static contact, described
Driving mechanism generally comprises crank connecting link drive mechanism, and crank connecting link drive mechanism generally comprises the crank to rotate around the axis, bent
Handle is hinged with connecting rod, and connecting rod is hinged with moving contact again, and moving contact is driven reciprocal in movable contact block by crank connecting link drive mechanism
Mobile, movable contact block is oriented to the direction of motion of moving contact.Moving contact and static contact realize air insulation when disconnecting.But
It is with the development of China's electric utility, transmission voltage grade is continuously improved, the sky of same distance between moving contact and static contact
Edge of drawing last breath has been unable to meet insulation requirements, moreover, moving contact can be when moving back and forth under the drive of crank connecting link drive mechanism
Run-off the straight in movable contact block can be adjusted when this is tilted in moving contact low-speed motion by the limit of movable contact block,
But it is easy in moving contact high-speed motion because adjusting leads to that clamping stagnation occurs between moving contact and movable contact block not in time, not only
The normal trouble-free operation of device is influenced, and also generates biggish damage to moving contact in the long-term use.
In view of the above problems, an Authorization Notice No. CN 201374519Y, entitled voltage enclosed-type assembled electrical appliance one
The Chinese patent of Switching device discloses a kind of high voltage combined switch, including earthing switch, and the earthing switch includes fixing
Contact (i.e. static contact), grounding contact (i.e. moving contact), the grounding contact can be close by the driving of crank rocker drive mechanism
It is moved on the direction far from fixed contact, the fixed contact and grounding contact are located in insulation gas chamber.The earthing switch is logical
It crosses and fixed contact and grounding contact are set to insulation effect preferably insulate in gas chamber, to improve fixed contact and ground connection is touched
Insulating capacity between head, meets the conveying requirement of high step voltage.But the crank rocker drive mechanism in the earthing switch
Still will drive grounding contact to tilt in grounding contact seat, be still easy when grounding contact is in quick movement with grounding contact seat it
Between clamping stagnation occurs.
Summary of the invention
The purpose of the present invention is to provide one kind be avoided that moving contact in quick motion process with movable contact block card
Stagnant earthing switch；The object of the invention is also to provide operating mechanisms used in a kind of above-mentioned earthing switch and transmission knot
Structure.
To achieve the above object, a kind of technical solution of earthing switch of the present invention is: including moving contact, static contact and drive
Dynamic moving contact carries out the operating mechanism of divide-shut brake movement, and the operating mechanism includes driving device and drive mechanism, the transmission
Structure includes crank, and the round end of the crank is hinged with connecting rod, and the hinge joint of the crank and connecting rod is located at the middle part of connecting rod,
The earthing switch further includes the guide rail that slider-crank mechanism is connect and collectively formed with crank, connecting rod with connecting rod one end,
The other end of the connecting rod and moving contact are hinged, the tie point of connecting rod and guide rail, the hinge joint of connecting rod and moving contact and
The rotation center of crank is respectively positioned on using the hinge joint of crank and connecting rod as on the same circle in the center of circle, the extension side of the guide rail
To perpendicular with the movement routine of moving contact.
The earthing switch further includes the cylinder with closed air chamber and the Crankarm box on cylinder, the transmission knot
Structure is located in the Crankarm box, and the static contact is located in the intracorporal closed air chamber of cylinder, and the contact jaw of the moving contact is inserted into cylinder
Cooperate in intracorporal closed air chamber with the static contact, insulating gas is equipped in closed air chamber.
The movable contact block of earthing switch is arranged on Crankarm box and is oriented to moving contact, and movable contact block is towards stationary contact
Shielding case is equipped at one end of head.
On the moving contact far from static contact one end be equipped with radially protrusion, be used for and movable contact block block cooperate
Prevent the boss that switch on of moving contact is excessive.
Moving contact is installed in the inner hole of movable contact block, and movable contact block passes through the guide ring being arranged in its inner hole to moving contact
It is oriented to.
Be arranged on the Crankarm box with the guide rail to be located at Crankarm box with the leading-out terminal of movable contact block conducting opposite
Or in adjacent side wall surface.
It is provided on the inner wall of the Crankarm box and the movement of moving contact is limited and buffered in moving contact separating brake
Cushion.
Insulation system is provided at the articulated position of the moving contact and connecting rod, the insulation system includes being set to dynamic touching
Gum cover between head and articulated shaft mating surface and the insulation spacer that is set between moving contact and connecting rod mating surface.
To achieve the above object, a kind of technical solution of operating mechanism of the present invention is: including driving device and being driven
Device driving is to drive moving contact to carry out the drive mechanism of divide-shut brake, and the drive mechanism includes crank, the rotation of the crank
Turn end and be hinged with connecting rod, the hinge joint of the crank and connecting rod is located at the middle part of connecting rod, and the operating mechanism further includes and connecting rod
One end connection and and crank, connecting rod collectively form the guide rail of slider-crank mechanism, the other end of the connecting rod is with being used for
The rotation of the tie point, the hinge joint and crank of connecting rod and moving contact of the hinged articulated section with moving contact, connecting rod and guide rail
Turn center to be respectively positioned on using the hinge joint of crank and connecting rod as on the same circle in the center of circle, the extending direction of the guide rail is touched with dynamic
The movement routine of head is perpendicular.
To achieve the above object, a kind of technical solution of drive mechanism of the present invention is: including crank, the rotation of the crank
It holds and is hinged with connecting rod, the hinge joint of the crank and connecting rod is located at the middle part of connecting rod, and the drive mechanism further includes and connecting rod one
End connection and and crank, connecting rod collectively form the guide rail of slider-crank mechanism, the other end and the moving contact hinge of the connecting rod
It connects, tie point, the hinge joint of connecting rod and moving contact and the rotation center of crank of connecting rod and guide rail are respectively positioned on crank
Hinge joint with connecting rod is on the same circle in the center of circle, and the extending direction of the guide rail mutually hangs down with the movement routine of moving contact
Directly.
The beneficial effects of the present invention are: earthing switch of the invention is in actual use, crank driven device is driven
It is dynamic to be rotated about the center of rotation, link rotatable hinged therewith is driven, one end of connecting rod is moved under the guiding role of guide rail,
The motion profile of the hinge joint of the other end and moving contact of connecting rod is defined under the constraint of the end motion track, is made connecting rod and is moved
The hinged end of contact only moves linearly on the direction far from and close to static contact, passes through the restriction to connecting rod one end motion profile
To which the motion profile to the hinge joint of connecting rod and moving contact is defined, connecting rod in driving moving contact reciprocating movement not
It will lead to moving contact to tilt in movable contact block, so as to avoid moving contact during high speed exercise because caused by tilting and dynamic
There is the phenomenon that clamping stagnation in contact base, enables devices to trouble-free operation.Also avoid the damage generated by catching phenomenon to moving contact.
Further, the abutting end of static contact and moving contact is located in closed air chamber, and insulating gas is equipped in closed air chamber,
Improve the insulating capacity between moving contact and static contact.
Further, cushion is set on Crankarm box, the moving contact for carrying out quick acting switching-off can be limited and be buffered,
It prevents moving contact separating brake from overshooting, breaks device.
Detailed description of the invention
Fig. 1 is the structure chart that earthing switch is in an off state in the specific embodiment 1 of earthing switch of the present invention；
Fig. 2 is the structure chart that earthing switch is in closed state in the specific embodiment 1 of earthing switch of the present invention.
In figure: 1, cylinder；2, Crankarm box；3, center conductor；4, static contact；5, moving contact；51, boss；6, crank；7, even
Bar；8, guide holder；9, guide plate；10, cushion；11, insulating disc；111, conductive inserts；12, insulating press boards；13, moving contact
Seat；131, shielding case；14, copper bar；15, earth plate；16, earthing block；17, disc insulator.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
A kind of specific embodiment 1 of earthing switch of the invention, as shown in Figure 1 to Figure 2, including cylinder 1 and setting exist
Operating mechanism A, the operating mechanism A on cylinder 1 include driving device and drive mechanism, are connected with Crankarm box on cylinder 1
2, drive mechanism is located in Crankarm box 2.The center conductor 3 for being connected to transmission line of electricity, center conductor 3 are provided in cylinder 1
The center position of cylinder 1 is fixed on by two disc insulators 17 that its both ends is arranged, in two benzvalene forms on center conductor 3
Static contact 4 is provided between insulator 17.Full of insulation in the closed air chamber constituted between cylinder 1 and two disc insulators 17
The good insulating gas of performance, in the present embodiment, the insulating gas are SF6, in other embodiments, it is also possible to other absolutely
The good insulating gas of edge performance.
It is provided with the first connector on the left side wall surface of the Crankarm box 2, has been bolted guide holder at connector
8, the inside of guide holder 8 is provided with guide plate 9, and being horizontally disposed on guide plate 9 has guide rail, in the present embodiment the guiding
Track is the horixmtal long hole being set on guide plate 9.It is provided with line outlet on the wall surface of right side, is provided with insulating disc in line outlet
11, insulating disc 11 is fixed in right end line outlet by the connection pressing plate of setting on the outside, 11 center of insulating disc
Place is provided with conductive inserts 111, connects and is correspondingly arranged on the perforation being pierced by for conductive inserts 111 on pressing plate, outside conductive inserts
End is leading-out terminal.The upside of cylinder 1 is equipped with flange and pulls out mouth, and Crankarm box 2 is connected by screw to be pulled out on mouth in flange, Crankarm box 2
Lower end is equipped with the second connector being connected to the inner cavity that flange pulls out mouth, and the lower end of Crankarm box 2 is connected with movable contact block 13, moving contact
Seat 13 is located at flange and pulls out in mouthful inner cavity and pull out between mouthful inner wall with flange with gap.
The middle part of Crankarm box 2, which is provided with, extend out to the shaft that 2 outside of Crankarm box is connect with driving device, and shaft is located at connecting lever
One end in box is connected with crank 6, and the round end of crank 6 is hinged with connecting rod 7, and crank 6 and the hinge joint of connecting rod 7 are located at connecting rod 7
Middle part, the left end of connecting rod 7 connect with the guide rail on guide plate 9 by pin shaft and can be moved along guide rail, crank 6,
Connecting rod 7 and guide rail constitute slider-crank mechanism.The right end of connecting rod 7 is hinged with moving contact 5.Connecting rod 7 and guide rail
Tie point, connecting rod 7 and the hinge joint of moving contact 5 and 3 points of the rotation center hinge joints being respectively positioned on crank and connecting rod of crank
For on the same circle in the center of circle, the extending direction of guide rail and the movement routine of moving contact are perpendicular.
The inner hole passed through for moving contact 5 is provided in the movable contact block 13, the lower end of moving contact 5 passes through inner hole and extends to cylinder
Cooperate in body 1 with static contact 4, movable contact block 13 is provided with shielding case 131, the upper surface of static contact 4 close to the lower end of static contact 4
It is set as arc surface, the setting of shielding case 131 and the setting of arc surface are played the role of being homogenized electric field, improve movable contact block
Insulating properties between 13 and static contact 4.
In addition, on moving contact 5 far from static contact 4 one end be equipped with radially protrusion, be used for and movable contact block 13 keep off
The boss 51 for only cooperating and then preventing switch on of moving contact excessive.It is provided on the upper inner wall face of Crankarm box 2 and divides used in moving contact 5
To the cushion 10 for moving upwards distance and being limited and being buffered of moving contact 5 when lock.Crank 6 is in above-mentioned two position limiting structure
It is swung within the scope of 80 ° up and down in 2 inside left space of Crankarm box under position-limiting action.It is equipped with and is used in the inner hole of movable contact block 13
The direction of motion of moving contact 5 is adjusted and then is guaranteed the guide ring (not shown) of moving contact 5 and 4 centering of static contact.
It is provided with insulation system at the moving contact 5 and the articulated position of connecting rod 7, is tied for realizing moving contact 5 and transmission
Insulation between structure, the insulation system include the gum cover being set between moving contact 5 and articulated shaft mating surface and are set to
Insulation spacer between 7 mating surface of moving contact 5 and connecting rod.Insulation knot is also equipped between the movable contact block 13 and Crankarm box 2
Structure, for realizing the insulation between movable contact block 13 and Crankarm box 2, the insulation system include be set to movable contact block 13 with connect
Insulation sleeve between structure and the insulation spacer being set between 2 mating surface of movable contact block 13 and Crankarm box.
The movable contact block 13 is connect by copper bar 14 with the inner conductive of conductive inserts 111, the outside of conductive inserts 111
It is conductively connected by earth plate 15 with the earthing block 16 being set on cylinder 1, cylinder 1 and ground are conductively connected, and are connect to realize
The function of ground switch；When moving contact 5 need to be used as test electrode, electrically connecting between earth plate 15 and earthing block 16 need to be only disconnected
It connects, can be tested.
In actual use, crank 6 is driven by shaft to be rotated earthing switch of the invention, drives company hinged therewith
Bar 7 rotates, and the left end of connecting rod 7 moves horizontally under the guiding role of guide rail, in the constraint of 7 left end motion profile of connecting rod
Under, the motion profile of the hinge joint of the right end and moving contact 5 of connecting rod 7 is confined to vertical direction.By being moved to 7 left end of connecting rod
To be defined to 7 right end of connecting rod and the motion profile of the hinge joint of moving contact 5, connecting rod 7 is driving dynamic touching for the restriction of track
It not will lead to moving contact 5 in first 5 reciprocating movement to tilt in movable contact block 13, be transported so as to avoid moving contact 5 in high speed
Because there is the phenomenon that clamping stagnation with movable contact block 13 caused by tilting during dynamic, trouble-free operation is enabled devices to.Also avoid because
The damage that catching phenomenon generates moving contact 5.
Moving contact 5 and 13 conductive communication of movable contact block, movable contact block 13 pass through copper bar 14, conductive insert, earth plate 15, connect
Plot 16, cylinder 1 are connected to ground.
As another embodiment of the invention, the earth plate 15 can not also be conductive by earthing block 16 and cylinder
It connects but is directly conductively connected with cylinder.
As another embodiment of the invention, installation sliding block, the connecting rod can also be oriented on the guide rail
It hingedly and by sliding block is moved on guide rail with the sliding block.
As another embodiment of the invention, the line outlet that movable contact block leading-out terminal is arranged is not arranged in and guided way
On the opposite right side wall surface in road, but it is arranged on the front side wall surface or rear side wall surface adjacent with guide rail.
Operating mechanism used in the specific embodiment of operating mechanism of the invention, specific structure and above-mentioned earthing switch
Specific structure it is identical, details are not described herein again.
Drive mechanism used in the specific embodiment of drive mechanism of the invention, specific structure and above-mentioned earthing switch
Specific structure it is identical, details are not described herein again.
Claims (10)
1. a kind of earthing switch carries out the operating mechanism of divide-shut brake movement, institute including moving contact, static contact and driving moving contact
Stating operating mechanism includes driving device and drive mechanism, and the drive mechanism includes crank, it is characterised in that: the rotation of the crank
Turn end and be hinged with connecting rod, the hinge joint of the crank and connecting rod is located at the middle part of connecting rod, and the earthing switch further includes and connecting rod
One end connection and and crank, connecting rod collectively form the guide rail of slider-crank mechanism, the other end and moving contact of the connecting rod
Hingedly, the rotation center of the tie point of connecting rod and guide rail, the hinge joint of connecting rod and moving contact and crank is respectively positioned on song
The hinge joint of handle and connecting rod is on the same circle in the center of circle, and the extending direction of the guide rail mutually hangs down with the movement routine of moving contact
Directly.
2. earthing switch according to claim 1, it is characterised in that: the earthing switch further includes having closed air chamber
Cylinder and the Crankarm box on cylinder, the drive mechanism are located in the Crankarm box, and the static contact is located in cylinder
Closed air chamber in, cooperate in the contact jaw of the moving contact insertion intracorporal closed air chamber of cylinder with the static contact, close gas
Insulating gas is equipped in room.
3. earthing switch according to claim 2, it is characterised in that: the movable contact block of earthing switch is arranged on Crankarm box
And moving contact is oriented to, movable contact block is equipped with shielding case at one end towards static contact.
4. earthing switch according to claim 3, it is characterised in that: one end on the moving contact far from static contact is equipped with
Radially protrusion, the boss for preventing switch on of moving contact excessive with the cooperation of movable contact block block.
5. earthing switch according to claim 3, it is characterised in that: moving contact is installed in the inner hole of movable contact block, is moved
Contact base is oriented to moving contact by the guide ring being arranged in its inner hole.
6. earthing switch according to claim 3, it is characterised in that: what is be arranged on the Crankarm box is connected with movable contact block
Leading-out terminal and the guide rail be located in the relative or neighbor side wall surface of Crankarm box.
7. according to earthing switch described in any claim in claim 2-6, it is characterised in that: the inner wall of the Crankarm box
The cushion that the movement of moving contact is limited and buffered in moving contact separating brake is provided on face.
8. earthing switch according to claim 1, it is characterised in that: be arranged at the articulated position of the moving contact and connecting rod
There is an insulation system, the insulation system includes the gum cover being set between moving contact and articulated shaft mating surface and is set to dynamic touching
Insulation spacer between head and connecting rod mating surface.
9. a kind of operating mechanism, including driving device and driven device driving to drive moving contact to carry out the biography of divide-shut brake
Dynamic structure, the drive mechanism includes crank, it is characterised in that: the round end of the crank is hinged with connecting rod, the crank with
The hinge joint of connecting rod is located at the middle part of connecting rod, the operating mechanism further include connect with connecting rod one end and and crank, connecting rod it is common
The guide rail of slider-crank mechanism is constituted, the other end of the connecting rod has for the articulated section hinged with moving contact, connecting rod
It is respectively positioned on the tie point, the hinge joint of connecting rod and moving contact and the rotation center of crank of guide rail with crank and connecting rod
Hinge joint is on the same circle in the center of circle, and the extending direction of the guide rail and the movement routine of moving contact are perpendicular.
10. a kind of drive mechanism, including crank, it is characterised in that: the round end of the crank is hinged with connecting rod, the crank with
The hinge joint of connecting rod is located at the middle part of connecting rod, the drive mechanism further include connect with connecting rod one end and and crank, connecting rod it is common
The guide rail of slider-crank mechanism is constituted, the other end and moving contact of the connecting rod are hinged, the connection of connecting rod and guide rail
The rotation center of point, the hinge joint of connecting rod and moving contact and crank is respectively positioned on using the hinge joint of crank and connecting rod as the same of the center of circle
On one circle, the extending direction of the guide rail and the movement routine of moving contact are perpendicular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710647076.7A CN109326479B (en) | 2017-08-01 | 2017-08-01 | Grounding switch and operating mechanism and transmission structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710647076.7A CN109326479B (en) | 2017-08-01 | 2017-08-01 | Grounding switch and operating mechanism and transmission structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109326479A true CN109326479A (en) | 2019-02-12 |
| CN109326479B CN109326479B (en) | 2021-07-23 |
Family
ID=65245791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710647076.7A Active CN109326479B (en) | 2017-08-01 | 2017-08-01 | Grounding switch and operating mechanism and transmission structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109326479B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137024A (en) * | 2019-06-06 | 2019-08-16 | 现代重工(中国)电气有限公司 | A kind of novel high speed grounding switch |
| CN114242506A (en) * | 2021-11-05 | 2022-03-25 | 河南平高电气股份有限公司 | Quick earthing switch |
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| CN201374519Y (en) * | 2009-03-17 | 2009-12-30 | 现代重工(中国)电气有限公司 | Integral switching device for high-voltage enclosed type combination electrical apparatus |
| CN201788876U (en) * | 2010-06-28 | 2011-04-06 | 山东泰开高压开关有限公司 | 550kV quick grounding switch |
| CN203367054U (en) * | 2013-06-13 | 2013-12-25 | 中国西电电气股份有限公司 | Transmission device for fast earthing switch |
| CN104332335A (en) * | 2014-11-25 | 2015-02-04 | 正泰电气股份有限公司 | High-speed grounding switch |
| TWM503420U (en) * | 2015-04-10 | 2015-06-21 | Solar Applied Mat Tech Corp | Removable insulation coverage device |
| CN105895440A (en) * | 2016-05-26 | 2016-08-24 | 河南平高电气股份有限公司 | Transmission device and switch equipment employing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2805406B1 (en) * | 2000-02-23 | 2002-08-23 | Alstom | THREE-POSITION ELECTRIC SWITCH WITH AN AXIALLY MOBILE SWITCHING ELEMENT |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201374519Y (en) * | 2009-03-17 | 2009-12-30 | 现代重工(中国)电气有限公司 | Integral switching device for high-voltage enclosed type combination electrical apparatus |
| CN201788876U (en) * | 2010-06-28 | 2011-04-06 | 山东泰开高压开关有限公司 | 550kV quick grounding switch |
| CN203367054U (en) * | 2013-06-13 | 2013-12-25 | 中国西电电气股份有限公司 | Transmission device for fast earthing switch |
| CN104332335A (en) * | 2014-11-25 | 2015-02-04 | 正泰电气股份有限公司 | High-speed grounding switch |
| TWM503420U (en) * | 2015-04-10 | 2015-06-21 | Solar Applied Mat Tech Corp | Removable insulation coverage device |
| CN105895440A (en) * | 2016-05-26 | 2016-08-24 | 河南平高电气股份有限公司 | Transmission device and switch equipment employing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137024A (en) * | 2019-06-06 | 2019-08-16 | 现代重工(中国)电气有限公司 | A kind of novel high speed grounding switch |
| CN114242506A (en) * | 2021-11-05 | 2022-03-25 | 河南平高电气股份有限公司 | Quick earthing switch |
| CN114242506B (en) * | 2021-11-05 | 2024-05-24 | 河南平高电气股份有限公司 | Quick grounding switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109326479B (en) | 2021-07-23 |
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