CN108831788B - A kind of three-station isolating grounding switch and its cylinder - Google Patents
A kind of three-station isolating grounding switch and its cylinder Download PDFInfo
- Publication number
- CN108831788B CN108831788B CN201810434270.1A CN201810434270A CN108831788B CN 108831788 B CN108831788 B CN 108831788B CN 201810434270 A CN201810434270 A CN 201810434270A CN 108831788 B CN108831788 B CN 108831788B
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- cylinder
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- static
- grounding
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- 230000003068 static effect Effects 0.000 claims abstract description 140
- 239000012212 insulator Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000003032 molecular docking Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 description 10
- 238000009413 insulation Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005684 electric field Effects 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- -1 and specifically Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
-
- 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
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
-
- 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
- H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
- H01H31/32—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with rectilinearly-movable contact
Abstract
The present invention relates to a kind of three-station isolating grounding switch and its cylinders, three-station isolating grounding switch includes cylinder, cylinder includes main paragraph and the static side mounting portion on main paragraph, cylinder is equipped with the moved end component and grounding static contact of arrangement corresponding with main paragraph and static side mounting portion, the grounding static contact, which has, extends to the intracorporal inner segment of cylinder, static side mounting portion is equipped with the perforated section being accommodated in the inner for the inner segment, it is conductive between the grounding static contact and cylinder to be connected, the perforated section is expanding structure, perforated section is become larger by one end far from main paragraph towards one end internal diameter close to main paragraph for inner wall and the rounding off section of inwardly protruding arrangement.After perforated section is designed as specific shape, under the premise of meeting the insulating requirements between moved end component and grounding static contact, the distance between moved end component and grounding static contact can be reduced simultaneously, can also reduce the size of cylinder external diameter, and then reduce the overall dimension of cylinder.
Description
Technical field
The present invention relates to a kind of three-station isolating grounding switch and its cylinders.
Background technique
Since three-station isolating grounding switch is integrated with the function of disconnecting switch and earthing switch, there is at low cost, volume
The small, advantages such as safety is high, have gradually replaced the traditional disconnecting switch individually arranged and earthing switch, but by disconnecting switch and
Earthing switch is integrated into a cylinder, in a limited space under, how to meet its insulating capacity, especially ground terminal insulate energy
Power has become designer's focus of attention.
Application publication number is that an application for a patent for invention of CN102368445A discloses a kind of tri-station isolating switch, should
Tri-station isolating switch includes cylinder, and two end edges are respectively static contact isolation switch and static contact of grounding switch, cylinder in cylinder
It is additionally provided on body positioned at the intracorporal moved end component of cylinder, moved end component includes moving contact, and cylinder includes being disposed around outside the component of moved end
The main paragraph in portion further includes the static side mounting portion for being provided with above-mentioned static contact of grounding switch, wherein offer on static side mounting portion
Perforated section, a part of static contact of grounding switch are contained in the inner segment in perforated section and foring grounding static contact.It is grounded stationary contact
Electrical connection is realized by external water conservancy diversion row between head and cylinder, the two is in equipotential state always.
In the prior art, when in three-station isolating grounding switch grounding static contact and moved end component be in gate-dividing state
When, although grounding static contact and cylinder are in zero potential, the ground connection moved end of moved end component is in normal electrification in high voltage state.
In order to guarantee that grounding static contact is not broken down by high-voltage, it is generally the case that the internal diameter of perforated section is designed as the larger value, meanwhile, add
The insulation distance being grounded in grounding static contact and moved end component under the big gate-dividing state in ground connection between moved end, to guarantee to be grounded
Static contact is not broken down by high-voltage.But thus bring consequence is exactly that the overall dimensions of cylinder are larger, including along ground connection moved end and
The outer diameter of shell portion is larger at the size and perforated section in the direction positioned opposite of grounding static contact, is unfavorable for small-sized
Change design.
In the prior art, in order to reduce the overall diameter dimensions of cylinder, Miniaturization Design is realized, part designer is being grounded
Shielding case is arranged in the external of static contact, still, quiet being grounded with the insulating requirements for meeting grounding static contact and being grounded between moved end
Shielding case is set on contact, will increase the whole complexity and difficulty of processing of grounding static contact.In addition, in the prior art connect
Opened up on the inner segment of ground static contact it is fluted, in groove usually be embedded in spring touch finger, can be protruded into for the moving contact of moved end component
And realize conductive be connected.The through-flow face of grounding static contact is inner face, in order to guarantee effective flow area, grounding static contact
Inside and outside diameter inevitably wants sufficiently large, this also further increases the external dimensions of cylinder.
Summary of the invention
The purpose of the present invention is to provide a kind of simple three-station isolating grounding switch of structure, to solve in the prior art
To guarantee insulating requirements between moved end component and static contact under gate-dividing state, and the problem for causing cylinder external dimensions larger；
A kind of three-station isolating grounding switch cylinder is also provided.
To achieve the above object, the technical solution of three-station isolating grounding switch of the present invention is: one kind three stations isolation connects
Ground switch, including cylinder, cylinder include main paragraph and the static side mounting portion on main paragraph, cylinder be equipped with main paragraph and
The moved end component and grounding static contact of the corresponding arrangement of static side mounting portion, the grounding static contact are intracorporal interior with cylinder is extended to
Section, static side mounting portion are equipped with the perforated section being accommodated in the inner for the inner segment, conductive phase between the grounding static contact and cylinder
Even, the perforated section is expanding structure, and perforated section is one end internal diameter of the inner wall by one end far from main paragraph towards close main paragraph
It becomes larger and the rounding off section of inwardly protruding arrangement.
The beneficial effects of the present invention are: be connected due to conductive between cylinder and grounding static contact, perforated section and ground connection stationary contact
Head is equipotential always, even if the insulation distance very little of the perforated section of the inner segment and cylinder of grounding static contact, also can satisfy and connect
Insulating requirements between ground static contact and cylinder.Shown after perforated section is designed as specific shape according to experiment, is meeting moved end
Under the premise of insulating requirements between component and grounding static contact, it can reduce simultaneously between moved end component and grounding static contact
Distance, can also reduce the size of cylinder external diameter, and then reduce the overall dimension of cylinder, adapt to setting for miniaturization
Meter.Moreover, not needing that shielding case is arranged to meet insulating requirements in the outside of grounding static contact in the present invention, overall structure is more
Simply.
Cylinder includes main paragraph and static side mounting portion, and correspondence is equipped with moved end component on main paragraph, in order to guarantee moved end portion
Insulation distance between part and cylinder, the cylinder further include the linkage section for connecting main paragraph and static side mounting portion, the connection
Section is the pyramidal structure being gradually reduced by main paragraph to static side mounting portion dimension of inner and outer diameters.
Cylinder includes the linkage section for connecting main paragraph and static side mounting portion, the main paragraph, linkage section and static side mounting portion
It is integrally formed.
It include main paragraph and static side mounting portion based on cylinder, correspondence is equipped with moved end component on main paragraph；Or it is based on cylinder
Linkage section including connecting main paragraph and static side mounting portion, the grounding static contact is by extending to inner barrel outside cylinder, and three
Station isolation grounding switch includes static side component, static side component include insulator and it is fixed be threaded onto insulator described connect
Ground static contact, the static side mounting portion have the external interface being sealingly mounted at for the insulator.
The grounding static contact is by extending to the inside of cylinder outside cylinder, specific to the conduction of cylinder and grounding static contact
Connection type is installed with water conservancy diversion row between the part of the grounding static contact being located at outside cylinder and cylinder body outer wall.
The technical solution of three-station isolating grounding switch of the present invention cylinder is: a kind of three-station isolating grounding switch cylinder
Body, including the main paragraph for being disposed around moved end component outer, the main paragraph is equipped with for installing the quiet of grounding static contact
Mounting portion is held, static side mounting portion is equipped with for the grounding static contact to be located at the perforation that is accommodated in the inner of the intracorporal inner segment of cylinder
Section, the cylinder are equipped with the interconnecting piece for being connected with the grounding static contact conduction, and the perforated section is expanding structure, wear
Hole section is that inner wall is become larger by one end far from main paragraph towards one end internal diameter close to main paragraph and inwardly protruding arrangement
Rounding off section.
Cylinder further includes the linkage section for connecting main paragraph and static side mounting portion, and the linkage section is to be pacified by main paragraph to static side
The pyramidal structure that dress portion dimension of inner and outer diameters is gradually reduced.
The main paragraph, linkage section and static side mounting portion are integrally formed.
The static side mounting portion, which is equipped with, is connected to the perforated section and the hole section that is connected to outside cylinder, and it is quiet for being grounded to be connected to hole section
Contact outside cylinder by extending in cylinder.
The static side mounting portion has the external interface for docking with static side component.
Detailed description of the invention
Fig. 1 is three-station isolating grounding switch provided by the present invention in the schematic diagram being grounded under gate-dividing state；
Fig. 2 is schematic diagram of the three-station isolating grounding switch provided by the present invention under contact of earth state；
Fig. 3 is the schematic diagram of ground connection static side assembly in Fig. 1 and Fig. 2；
Fig. 4 is the schematic diagram of Fig. 1 and Fig. 2 middle cylinder body；
Fig. 5 is the schematic diagram in Fig. 4 at static side mounting portion；
Fig. 6 is three-station isolating grounding switch provided by the present invention in the ANSYS simulation analysis being grounded under gate-dividing state
Electric field load applies figure；
Fig. 7 is to apply the field intensity map after electric field load in ANSYS simulation analysis.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The specific embodiment of three-station isolating grounding switch of the invention, as shown in Figures 1 to 7, three stations isolation ground connection
Switch includes cylinder 3, and multiple apertures, including isolation static side mounting hole, moved end mounting hole, ground connection static side installation are offered on cylinder
Hole and transmission mechanism mounting hole, wherein ground connection static side mounting hole is located at the left end of cylinder.Certainly, it is also provided on cylinder
His hole, such as point inspection hole.
The first disc insulator 6, the middle section of the first disc insulator 6 are sealed and installed on isolation static side mounting hole
Conducting block is installed, conduction is fixedly installed with isolation static side assembly 7 on conducting block, and isolation static side assembly 7 includes prolonging to the left
The static contact stretched.The second disc insulator 8, the middle section of the second disc insulator 8 are sealed and installed on the mounting hole of moved end
It also is provided with conducting block, conduction is fixedly installed with moved end component on conducting block, and moved end component includes moving contact seat 9, in moving contact seat 9
Conductive mounting have can guiding movement in left-right direction moving contact 10, wherein offered in the left and right ends of moving contact 10 recessed
Slot offers spring touch finger annular groove on the cell wall of groove, is equipped with spring touch finger in spring touch finger annular groove.Moving contact 10 and dynamic
Touch base 9 constitutes moved end component.When moving contact 10 is moved to the left, grounding static contact 1 can extend into the left end groove of moving contact
It is interior and squeeze the spring touch finger in the groove of left end, realize that moving contact is connected with the conduction of grounding static contact.Moving contact to the right
When mobile, isolation static contact can extend into the right end groove of moving contact and squeeze the spring touch finger in right end groove, realize
Isolation static contact is connected with the conduction of moving contact.Transmission assembly 5, transmission assembly 5 are sealed and installed on transmission mechanism mounting hole
It is driven and is connected between moving contact, be able to drive moving contact and move back and forth in left-right direction, specific assembly method is existing skill
The mode of art, the present invention in will no longer be developed in details.In transmission fit on attended operation mechanism 4, specifically, operating mechanism can be with
For spring operating mechanism, hydraulic operating mechanism and electromagnetic operating mechanism etc..It is able to drive by operating mechanism, transmission assembly dynamic
Contact moves left and right.Specifically, it needs to guarantee the mutually insulated between each contact and cylinder inboard wall, Yi Jijie in actual use
Between ground static contact and moved end component, the insulation distance be isolated between static contact and moved end component.
The main improvement part of the present embodiment be cylinder left end grounded part and with left end grounded part cooperation
It is grounded static side part.Cylinder includes the main paragraph 31 for being disposed around moved end component outer and the static side mounting portion 32 positioned at left end,
It further include the linkage section 33 for connecting main paragraph 31 and static side mounting portion 32.Wherein, the left side of static side mounting portion 32 is plane, energy
Enough installation ground connection static side assembly, static side mounting portion 32 are equipped with the through-hole inside and outside connection cylinder, and specifically, which includes being located at
The perforated section 321 of right end further includes connecting perforated section 321 to be connected to hole section 322 with outside cylinder.
The structure of ground connection static side assembly in the present embodiment is as shown in figure 3, ground connection static side assembly includes insulator 2, insulation
Integrally formed with grounding static contact 1 in son 2, grounding static contact runs through insulator, and specifically, insulator can be with grounding static contact
Integrated moulding by casting.The right side of insulator is used to be bonded docking with the external interface of static side mounting portion 32, on right side
Sealing ring annular groove is offered, in use, screw perforation is offered on the insulator when sealing ring is placed in the sealing ring annular groove,
When specifically used, screw in screw perforation by passing through and insulator being fixed on the grounded part of cylinder.In the present embodiment, tool
When body is installed, grounding static contact 1 outside cylinder by wearing to cylinder, so that grounding static contact 1 is with corresponding with perforated section 321
Inner segment 11 also has and installs section 12 positioned at 2 side of close insulator of inner segment 11, and it is corresponding with connection hole section 322 to install section 12.
Signified in the present embodiment to correspond to axial correspondence, i.e. inner segment 11 is contained in perforated section 321, is installed section 12 and is contained in intercommunicating pore
In section 322.
In the present embodiment, pass through water conservancy diversion between the part of grounding static contact 1 being located at outside cylinder 3 and the outer wall of cylinder 3
Row 13 is conductive to be connected, and specifically, between water conservancy diversion row 13 and cylinder 3, be screwed phase between water conservancy diversion row 13 and grounding static contact 1
Even.Certainly, in other embodiments, conductive be connected can also be realized between grounding static contact 1 and cylinder 3 in other way.
By water conservancy diversion row 13, it can be realized and keep equipotential between grounding static contact 1 and perforated section 321, even if distance between the two
It is small again, insulation fault will not occur.
In the present embodiment, in order in meeting grounding static contact 1 and moved end component towards the ground connection moved end of grounding static contact 1
Between insulating requirements, meanwhile, reduce cylinder 3 outer dimension (outer diameter and Fig. 1 including shell portion locating for perforated section
The length dimension of middle left and right directions).In the present invention, perforated section 321 is designed as expanding structure, the internal diameter of perforated section 321 is by remote
One end from main paragraph 31 is gradually increased towards one end close to main paragraph 31, moreover, perforated section 321 and any where axis are put down
The intersecting lens in face is the smooth curve (as seen from Figure 5) towards projecting inward arrangement and perforated section 321 is made to form inner wall
Internal diameter becomes larger and the rounding off section of inwardly protruding arrangement.The inner wall of perforated section 321 is designed as the specific shape, is
It is tested according to Multi simulation running resulting.
In the present invention, the inside and outside diameter of shell portion where perforated section in the prior art is reduced simultaneously, in addition reduces ground connection
The end of the inner segment 11 of static contact 1 and the distance between the ground connection moved end of moved end component under gate-dividing state, by above-mentioned two
After a size reduces, the overall volume of cylinder reduces 30%, carries out ANSYS to improved three-station isolating grounding switch
Simulation analysis obtains Fig. 6 and Fig. 7, wherein Fig. 6 be electric field load loading figure, moving contact 10 ground connection moved end voltage highest,
For 1675kV；And it is 0kV that grounding static contact and cylinder, which are,.Fig. 7 is the field intensity map after the load of electric field load, moves touching in figure
First 10 are in the position of separating brake, occur on the shielding case of moved end component at the maximum value of field strength, are 22.23Kv/mm, and are grounded
Field strength and the field strength of cylinder 3 in 1 inner segment 11 of static contact towards one end of moving contact are about 5kV/mm, are far smaller than grounded
The disruptive field intensity (25kV/mm) of static contact 1, can satisfy design requirement, it can be seen that, under limited insulation distance, moved end
Field strength between the ground connection moved end of component and grounding static contact and cylinder is sufficiently small.
Grounding static contact in the present invention is solid cylindrical structure, and the end with grounding static contact in the prior art is groove
Structure is compared, and under the premise of equally effective flow area, the outer diameter of the grounding static contact of solid cylindrical is less than end and is
The outer diameter of the grounding static contact of groove structure realizes the design and requirement of miniaturization.It certainly, in other embodiments, can be with
By other static contacts in addition to grounding static contact, static contact is such as isolated and is also configured as above-mentioned form.
From the foregoing, it will be observed that linkage section is pyramidal structure in the present invention, the outer dimension of cylinder can reduce, while meeting dynamic
Insulating requirements between end pieces and cylinder.It is integrally formed between linkage section, static side mounting portion and main paragraph, reduces docking
The quantity in gap reduces the probability of gas leakage in cylinder.It, can be between linkage section and static side mounting portion in other embodiments
And/or the removable interface matched is set between static side mounting portion and main paragraph, realize removable be connected.Water conservancy diversion is connected on cylinder
The part of row constitutes interconnecting piece.
The specific embodiment of three-station isolating grounding switch cylinder of the present invention, three-station isolating grounding switch cylinder
Structure is identical as in above-described embodiment, and content repeats no more.
Claims (10)
1. a kind of three-station isolating grounding switch, including cylinder, cylinder includes main paragraph and the static side installation on main paragraph
Portion, cylinder are equipped with the moved end component and grounding static contact of arrangement corresponding with main paragraph and static side mounting portion, the ground connection stationary contact
Head, which has, extends to the intracorporal inner segment of cylinder, and static side mounting portion is equipped with the perforated section being accommodated in the inner for the inner segment, and feature exists
In: conductive between the grounding static contact and cylinder to be connected, the perforated section is expanding structure, and the inner wall of perforated section is by far from main
One end of body section becomes larger towards one end internal diameter close to main paragraph, and the perforated section is the rounding off of inwardly protruding arrangement
Section.
2. three-station isolating grounding switch according to claim 1, it is characterised in that: the cylinder further includes connection main body
The linkage section of section and static side mounting portion, the linkage section are gradually reduced by main paragraph to static side mounting portion dimension of inner and outer diameters
Pyramidal structure.
3. three-station isolating grounding switch according to claim 2, it is characterised in that: the main paragraph, linkage section and quiet
Mounting portion is held to be integrally formed.
4. three-station isolating grounding switch according to claim 1 or 2 or 3, it is characterised in that: the grounding static contact by
Extend to inner barrel outside cylinder, three-station isolating grounding switch includes static side component, static side component include insulator and
The fixed grounding static contact being threaded onto insulator, the static side mounting portion has to be sealingly mounted at for the insulator
External interface.
5. three-station isolating grounding switch according to claim 4, it is characterised in that: the grounding static contact is located at cylinder
It is installed with water conservancy diversion row between external part and cylinder body outer wall, is connected with the conduction being grounded between static contact and cylinder.
6. a kind of three-station isolating grounding switch cylinder, including the main paragraph for being disposed around moved end component outer, the master
Body section is equipped with static side mounting portion for installing grounding static contact, and static side mounting portion is equipped with for by the grounding static contact
Be located at the perforated section that is accommodated in the inner of the intracorporal inner segment of cylinder, it is characterised in that: the cylinder is equipped with for quiet with the ground connection
The connected interconnecting piece of contact conduction, the perforated section are expanding structure, and the inner wall of perforated section is leaned on by one end court far from main paragraph
One end internal diameter of nearly main paragraph becomes larger, and the perforated section is the rounding off section of inwardly protruding arrangement.
7. three-station isolating grounding switch cylinder according to claim 6, it is characterised in that: cylinder further includes connection master
The linkage section of body section and static side mounting portion, the linkage section are to be gradually reduced by main paragraph to static side mounting portion dimension of inner and outer diameters
Pyramidal structure.
8. three-station isolating grounding switch cylinder according to claim 7, it is characterised in that: the main paragraph, connection
Section and static side mounting portion are integrally formed.
9. three-station isolating grounding switch cylinder described according to claim 6 or 7 or 8, it is characterised in that: the static side peace
Dress portion, which is equipped with, is connected to the perforated section and the hole section that is connected to outside cylinder, is connected to hole section for grounding static contact by extending to outside cylinder
In cylinder.
10. three-station isolating grounding switch cylinder described according to claim 6 or 7 or 8, it is characterised in that: the static side
Mounting portion has the external interface for docking with static side component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810434270.1A CN108831788B (en) | 2018-05-08 | 2018-05-08 | A kind of three-station isolating grounding switch and its cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810434270.1A CN108831788B (en) | 2018-05-08 | 2018-05-08 | A kind of three-station isolating grounding switch and its cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108831788A CN108831788A (en) | 2018-11-16 |
| CN108831788B true CN108831788B (en) | 2019-09-06 |
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ID=64148487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810434270.1A Active CN108831788B (en) | 2018-05-08 | 2018-05-08 | A kind of three-station isolating grounding switch and its cylinder |
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| Country | Link |
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| CN (1) | CN108831788B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628186A (en) * | 2020-12-14 | 2022-06-14 | 平高集团有限公司 | Flow guide row connecting structure of grounding switch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201229884Y (en) * | 2008-07-02 | 2009-04-29 | 中国西电电气股份有限公司 | Fast grounding switch |
| CN202142460U (en) * | 2011-03-03 | 2012-02-08 | 湖南天鹰高压开关电器有限公司 | Double grounding straight-through type three station isolation grounding switch |
| CN202736817U (en) * | 2012-08-23 | 2013-02-13 | 中国西电电气股份有限公司 | High-voltage isolation/grounding switch device |
| CN203910636U (en) * | 2014-06-30 | 2014-10-29 | 中国西电电气股份有限公司 | High-voltage disconnecting/grounding switch device |
| CN205666157U (en) * | 2016-05-25 | 2016-10-26 | 湖南长高电气有限公司 | Isolator and earthing switch structure |
-
2018
- 2018-05-08 CN CN201810434270.1A patent/CN108831788B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201229884Y (en) * | 2008-07-02 | 2009-04-29 | 中国西电电气股份有限公司 | Fast grounding switch |
| CN202142460U (en) * | 2011-03-03 | 2012-02-08 | 湖南天鹰高压开关电器有限公司 | Double grounding straight-through type three station isolation grounding switch |
| CN202736817U (en) * | 2012-08-23 | 2013-02-13 | 中国西电电气股份有限公司 | High-voltage isolation/grounding switch device |
| CN203910636U (en) * | 2014-06-30 | 2014-10-29 | 中国西电电气股份有限公司 | High-voltage disconnecting/grounding switch device |
| CN205666157U (en) * | 2016-05-25 | 2016-10-26 | 湖南长高电气有限公司 | Isolator and earthing switch structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108831788A (en) | 2018-11-16 |
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