CN113327805B - Enclosed switch and working method thereof - Google Patents
Enclosed switch and working method thereof Download PDFInfo
- Publication number
- CN113327805B CN113327805B CN202110632226.3A CN202110632226A CN113327805B CN 113327805 B CN113327805 B CN 113327805B CN 202110632226 A CN202110632226 A CN 202110632226A CN 113327805 B CN113327805 B CN 113327805B
- Authority
- CN
- China
- Prior art keywords
- contact
- conductive terminal
- switch
- insulating sleeve
- moving contact
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000004891 communication Methods 0.000 claims abstract description 6
- 239000004020 conductor Substances 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000003471 anti-radiation Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 230000003245 working effect Effects 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
- H01H31/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/62—Heating or cooling of contacts
Abstract
The invention provides a closed switch and a working method thereof, the closed switch comprises a transparent insulating sleeve, an upper conductive terminal positioned at the upper end of the insulating sleeve and a lower conductive terminal positioned at the lower end of the insulating sleeve, wherein a moving contact capable of moving along the length direction of the insulating sleeve is arranged in the insulating sleeve, the top end and the lower end of the moving contact are both provided with contacts, when the switch is in a closed state, the contact positioned at the top end of the moving contact is in contact communication with the upper conductive terminal, the contact positioned at the lower end of the moving contact is in contact communication with the lower conductive terminal, and the upper conductive terminal, the lower conductive terminal, the insulating sleeve and the moving contact form a closed space for reducing the influence of the environment on the switch and improving the capacity of the switch to cut load current. The invention has the advantages of simple structure, reasonable design, excellent performance, convenient operation, simple structure, low cost, convenient observation of the position state of the switch, no maintenance and adjustment in the service period, effective solving of the power failure caused by the jamming of the traditional isolating switch mechanism and the heating of the contact, and practical value.
Description
Technical Field
The invention relates to a closed switch and a working method thereof.
Background
The distribution network overhead line is used for conveying electric energy to end users, the isolating switch is widely applied to the line, and the isolating switch plays an indispensable role in the safety management of a power distribution network by adopting a large number of positions such as the section and branch points of the line, the connection point of the overhead line and a cable line, two side lines of a circuit breaker on a column and the like as obvious disconnection points. At present, the traditional isolating knife switch applied to the grid-connected overhead line maintains an open-close state in a spring compression and mechanical clamping mode, and has more parts; when the operation is performed, the working personnel aim at the position and can be forced to push the switch in place; after a period of operation, the contact is corroded, stuck or loosened, and power outage and power transmission frequently occur; the spring is pressed to cause the surface coating damage of the movable contact and the static contact, thereby causing the heating and burning of the disconnecting link, and the spring fatigue is easy to cause poor contact of the movable contact and the static contact and also easy to cause the heating and burning of the disconnecting link.
Disclosure of Invention
The invention improves the problems, namely the technical problem to be solved by the invention is to provide a closed switch and a working method thereof, and the closed switch is convenient to operate and has good working effect.
The invention is composed by that it includes transparent insulating sleeve, upper conductive terminal on the upper end of insulating sleeve and lower conductive terminal on the lower end of insulating sleeve, the inside of insulating sleeve is equipped with moving contact which can move along the length direction of insulating sleeve, the top and lower ends of moving contact are equipped with contacts, the contact on the top of moving contact is contacted and connected with upper conductive terminal, the contact on the lower end of moving contact is contacted and connected with lower conductive terminal, the upper conductive terminal, lower conductive terminal, insulating sleeve and moving contact form closed space to reduce the influence of environment to switch and improve the capability of switch to cut load current.
Further, the outer surfaces of the upper conductive terminal and the lower conductive terminal are provided with cooling fins.
Further, the outer parts of the upper conductive terminal and the lower conductive terminal are respectively provided with an insulating shielding cover, and the insulating shielding covers are provided with radiating holes.
Further, a gasket is arranged in the lower conductive terminal, a slot is formed in the inner ring of the gasket, and a clamping point used for penetrating through the slot is arranged on the outer side of the moving contact and used for abutting and fixing the clamping point of the moving contact on the upper surface of the non-slot position of the gasket.
Further, the contact is of a contact finger structure, the inner walls of the upper conductive terminal and the lower conductive terminal, or the upper end part and the lower end part of the moving contact are provided with the contact finger structure, and the contact finger structure is formed by surrounding a plurality of contact pieces; the contact piece is an elastic body and is used for ensuring good contact between the movable contact and the upper conductive terminal and between the movable contact and the lower conductive terminal.
Further, an operation pull ring is arranged at the lower end of the movable contact.
Further, a fixing fitting is arranged in the middle of the insulating sleeve, and the fixing fitting is provided with a mounting hole.
Further, a plurality of umbrella skirt structures are arranged outside the insulating sleeve at intervals from top to bottom, and an antistatic and anti-radiation material layer is arranged on the outer surface of the umbrella skirt structure.
Further, go up conductive terminal and include conductor and last binding post, go up the conductor below and be equipped with the groove of dodging that is used for dodging the moving contact, lower conductive terminal includes lower conductor and lower binding post, the lower conductor middle part is equipped with the trompil that is used for the moving contact to run through.
Further, the working method of the closed switch comprises the following steps: (1) When the switch is closed, the power insulation operating rod pushes the operation pull ring to push the movable contact into the insulation sleeve, and two contacts on the movable contact are respectively and reliably contacted with the contact finger structures of the inner wall of the upper conductive terminal and the inner wall of the lower conductive terminal, so that the switch is in a closed communication state; (2) The operation pull ring is rotated to drive the movable contact to rotate, and the clamping point on the movable contact rotates to abut against the upper surface fixed at the non-slotting position of the gasket to lock the movable contact, so that the movable contact is prevented from vibrating and falling off; (3) When the switch needs to be turned on, the operation pull ring is rotated through the electric insulation operating rod, the clamping point on the movable contact is rotated to the slotting position of the gasket, and the operation pull ring is pulled downwards to drive the movable contact to move downwards; (4) The clamping point on the movable contact is passed through the slot of the gasket, the movable contact moves downwards along the length direction of the insulating sleeve, and the two movable contacts are separated from contact with the upper conductive terminal and the lower conductive terminal, so that the switch is in an open state.
Compared with the prior art, the invention has the following beneficial effects: the device has reasonable design, simple structure, convenient operation and small maintenance workload, effectively reduces the engineering cost, greatly reduces the power failure caused by the reasons of jamming of the isolating knife switch mechanism, heating of the contact and the like, improves the capability of cutting off load current, and effectively improves the power supply reliability; in addition, the heat dissipation structure design of the upper conductive terminal and the lower conductive terminal can avoid the heating fault of the contact; when the switch is opened, the upper conductive terminal and the lower conductive terminal are simultaneously separated from contact with the two moving contacts, and the insulating shielding cover arranged outside the lower conductive terminal assists in cutting off an arcing channel, so that the load current cutting capacity of the switch is improved.
Drawings
FIG. 1 is a perspective view of a closed state according to an embodiment of the present invention;
FIG. 2 is a schematic view of a closed state and partial structure according to an embodiment of the present invention;
FIG. 3 is a front view of an embodiment of the present invention in a closed position;
FIG. 4 is a cross-sectional view B-B of FIG. 3;
FIG. 5 is a schematic view of a partial structure of an open state according to an embodiment of the present invention;
FIG. 6 is an open front view of an embodiment of the present invention;
FIG. 7 is a cross-sectional view A-A of FIG. 6;
FIG. 8 is another angular cross-sectional view of FIG. 6;
FIG. 9 is a schematic diagram of a moving contact, a spacer and a rivet according to an embodiment of the present invention;
FIG. 10 is a schematic view illustrating different angle structures of two insulating shields according to an embodiment of the invention;
in the figure: 1-insulating sleeve, 11-umbrella skirt structure, 2-upper conductive terminal, 21-upper conductor, 22-upper wiring terminal, 23-avoidance groove, 3-lower conductive terminal, 31-lower conductor, 32-lower wiring terminal, 33-opening, 4-moving contact, 41-contact, 42-clamping point, 43-contact piece, 5-gasket, 51-slotting, 6-operation pull ring, 61-connecting plate, 62-rivet, 7-fixed fitting, 8-insulating shielding cover, 9-air outlet hole and 10-air inlet hole.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
Examples: as shown in fig. 1 to 10, in this embodiment, a closed switch is provided, which includes a transparent insulating sleeve 1, an upper conductive terminal 2 located at the upper end of the insulating sleeve, and a lower conductive terminal 3 located at the lower end of the insulating sleeve, wherein a moving contact 4 capable of moving along the length direction of the insulating sleeve is disposed inside the insulating sleeve, the top end and the lower end of the moving contact are both provided with contacts 41, the contact located at the top end of the moving contact is in contact communication with the upper conductive terminal, and the contact located at the lower end of the moving contact is in contact communication with the lower conductive terminal; when the switch is in a closed state, the upper conductive terminal, the lower conductive terminal, the insulating sleeve and the moving contact form a closed space together, so that the influence of the environment on the switch is reduced, and the load current cutting capacity of the switch is improved.
The insulating sleeve is transparent, and when the movable contact is in a closed state or an open state, the position of the movable contact in the insulating sleeve can be observed by naked eyes.
The upper conductive terminal and the lower conductive terminal have elasticity and are used for forming an electric connection loop with a power grid system and forming a closed or open state of a switch with a movable contact.
The two contacts on the movable contact can be respectively and well electrically contacted with the upper conductive terminal and the lower conductive terminal, and other parts except the parts of the two ends of the movable contact, which are electrically contacted with the upper conductive terminal and the lower conductive terminal, are covered with high-temperature-resistant and ultraviolet-resistant insulating materials.
In this embodiment, the outer surfaces of the upper conductive terminal and the lower conductive terminal are provided with heat dissipation fins, which adopt heat dissipation measures such as matte treatment.
In this embodiment, the outer parts of the upper conductive terminal and the lower conductive terminal are respectively provided with an insulating shielding cover 8, and the insulating shielding covers are provided with heat dissipation holes, wherein the heat dissipation holes comprise air outlet holes 9 positioned at the periphery of the upper part of the insulating shielding cover and air inlet holes 10 positioned at the lower surface of the insulating shielding cover.
The upper end of the insulating shielding cover positioned outside the upper conductive terminal is closed, the lower end of the insulating shielding cover is open, the upper conductive terminal is wrapped in the insulating shielding cover, and the lower end opening is used for the moving contact to extend into the upper conductive terminal; the upper end and the lower end of the insulating shielding cover positioned outside the lower conductive terminal are both openings; the lower conductive terminal is wrapped in the insulating shielding cover, the moving contact penetrates through the insulating shielding cover below, and when the switch is closed, the contact below the moving contact enters the lower conductive terminal to be contacted.
In this embodiment, the lower conductive terminal is internally provided with a gasket 5, the inner ring of the gasket is provided with two slots 51, and two clamping points 42 for passing through the slots are arranged on the outer side of the moving contact, so that the clamping points of the moving contact are abutted and fixed on the upper surface of the non-slot position of the gasket.
In this embodiment, the contact is a design of a finger structure, and the finger structure is formed by surrounding a plurality of contact pieces 43; the diameters above and below the cylindrical body which is surrounded by the arc touches are smaller than the diameter of the middle part of the cylindrical body.
The cross section of the contact finger structure is circular; the arrangement of the contact finger structure can increase the conductivity and the heat dissipation performance; furthermore, it should be noted here that the contact finger structure can also be arranged inside the upper and lower conductive terminals; if the two ends of the moving contact are provided with the contact finger structures, the inner parts of the upper conductive terminal and the lower conductive terminal are not provided with the contact finger structures, and if the two ends of the moving contact are not provided with the contact finger structures, the contact finger structures are arranged on the inner walls of the upper conductive terminal and the lower conductive terminal.
In this embodiment, in order to facilitate opening and closing of the moving contact, an operation pull ring 6 is provided at the lower end of the moving contact, a connecting plate 61 is fixed above the operation pull ring, the connecting plate passes through the middle part of the lower end of the moving contact and enters the moving contact, and the connecting plate is fixed with the moving contact by rivets 62.
In this embodiment, a fixing fitting 7 is disposed in the middle of the insulating sleeve, and the fixing fitting is provided with a mounting hole; can be fixed on the power tower component, has enough bending resistance and torsional strength, and meets the stability of switch operation.
The fixing hardware fitting can be made of aluminum alloy or other nonferromagnetic materials, and is matched with the nut and the flexible gasket to clamp and fix the insulating sleeve.
In this embodiment, the inside of the insulating sleeve is a cavity; according to different voltage class designs, a plurality of umbrella skirt structures 11 are arranged outside the insulating sleeve at intervals from top to bottom, the umbrella skirt structures can be annular bodies, and the umbrella skirt structures and the insulating sleeve can be integrated; the outer surface of the umbrella skirt structure is provided with an antistatic and dustproof material layer, and the antistatic and dustproof material layer can be formed by coating antistatic materials on the outer surface of the umbrella skirt structure.
The umbrella skirt structure and the insulating sleeve can be made of glass or a transparent composite insulating material with good insulating performance, corrosion resistance, sunlight irradiation resistance, and the insulating sleeve has enough bending resistance and torsional strength, so that the stability of switch operation is met.
In this embodiment, the upper conductive terminal includes an upper conductor 21 and an upper connection terminal 22, an avoidance groove 23 for avoiding the moving contact is provided below the upper conductor, the lower conductive terminal includes a lower conductor 31 and a lower connection terminal 32, and an opening 33 for the moving contact to penetrate is provided in the middle of the lower conductor.
And an elastic insulating shielding cover is arranged outside the part, which is contacted with the lower conductive terminal, of the lower end of the movable contact.
In the embodiment, when the switch is closed, the power insulation operating rod pushes the operation pull ring to push the moving contact into the insulation sleeve, and two contacts on the moving contact are reliably contacted with the upper conductive terminal and the lower conductive terminal respectively, so that the switch is in a closed state; the heat dissipation design of the upper conductive terminal and the lower conductive terminal forms natural circulation air cooling, so that the heating fault of the switch is avoided.
The operation pull ring is rotated to drive the movable contact to rotate, the clamping point on the movable contact rotates to abut against the upper surface fixed at the non-slotting position of the gasket, the movable contact is locked, and the movable contact is prevented from vibrating and falling off.
When the switch is opened, the pull ring is operated through the rotation of the electric insulation operating rod, the clamping point on the movable contact is rotated to the slotting position of the gasket, the movable contact of the pull ring is pulled downwards to operate, the clamping point on the movable contact is passed through by the slotting of the gasket, the movable contact extends out of the insulating sleeve and is separated from contact with the upper conductive terminal and the lower conductive terminal, and the insulating shielding cover and the elastic insulating shielding cover of the lower conductive terminal assist in cutting off the arcing channel, so that the switch is in an opened state.
Any of the above-described embodiments of the present invention disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the invention, and the numerical values listed above should not limit the protection scope of the invention.
Meanwhile, if the above invention discloses or relates to parts or structural members fixedly connected with each other, the fixed connection may be understood as follows unless otherwise stated: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (7)
1. The utility model provides a closed switch which characterized in that includes transparent insulating sleeve, the upper conductive terminal that is located the insulating sleeve upper end and the lower conductive terminal that is located the insulating sleeve lower extreme, the inside moving contact that is provided with of insulating sleeve along insulating sleeve length direction, moving contact top, lower extreme all have the contact, the contact and the upper conductive terminal contact intercommunication that are located the moving contact top, the contact and the lower conductive terminal contact intercommunication that are located the moving contact lower extreme, upper conductive terminal, lower conductive terminal, insulating sleeve and moving contact constitute the enclosure space for reduce the influence of environment to the switch and improve the ability that the switch cut off the load current;
the outer parts of the upper conductive terminal and the lower conductive terminal are respectively provided with an insulating shielding cover, and the insulating shielding covers are provided with heat dissipation holes;
a gasket is arranged in the lower conductive terminal, a slot is formed in the inner ring of the gasket, and a clamping point for penetrating through the slot is formed in the outer side of the moving contact and used for abutting and fixing the clamping point of the moving contact on the upper surface of the non-slot position of the gasket;
the contact is of a contact finger structure, the inner walls of the upper conductive terminal and the lower conductive terminal, or the upper end and the lower end of the moving contact are provided with the contact finger structure, and the contact finger structure is formed by surrounding a plurality of contact pieces; the contact piece is an elastic body and is used for ensuring good contact between the movable contact and the upper conductive terminal and between the movable contact and the lower conductive terminal.
2. The closed switch of claim 1, wherein the outer surfaces of the upper and lower conductive terminals are provided with heat sinks.
3. The closed switch of claim 1, wherein the lower end of the movable contact is provided with an operating pull ring.
4. The closed switch of claim 1, wherein a fixing fitting is provided in the middle of the insulating sleeve, and the fixing fitting has a mounting hole.
5. The closed switch according to claim 1, wherein a plurality of umbrella skirt structures are arranged outside the insulating sleeve at intervals from top to bottom, and an antistatic radiation-proof material layer is arranged on the outer surface of the umbrella skirt structure.
6. The closed switch according to claim 1, wherein the upper conductive terminal comprises an upper conductor and an upper wiring terminal, an avoidance groove for avoiding the moving contact is arranged below the upper conductor, the lower conductive terminal comprises a lower conductor and a lower wiring terminal, and an opening for the moving contact to penetrate is formed in the middle of the lower conductor.
7. A method of operation using the closed switch of claim 1, comprising the steps of: (1) When the switch is closed, the power insulation operating rod pushes the operation pull ring to push the movable contact into the insulation sleeve, and two contacts on the movable contact are respectively and reliably contacted with the contact finger structures of the inner wall of the upper conductive terminal and the inner wall of the lower conductive terminal, so that the switch is in a closed communication state; (2) The operation pull ring is rotated to drive the movable contact to rotate, and the clamping point on the movable contact rotates to abut against the upper surface fixed at the non-slotting position of the gasket to lock the movable contact, so that the movable contact is prevented from vibrating and falling off; (3) When the switch needs to be turned on, the operation pull ring is rotated through the electric insulation operating rod, the clamping point on the movable contact is rotated to the slotting position of the gasket, and the operation pull ring is pulled downwards to drive the movable contact to move downwards; (4) The clamping point on the movable contact is passed through the slot of the gasket, the movable contact moves downwards along the length direction of the insulating sleeve, and the two movable contacts are separated from contact with the upper conductive terminal and the lower conductive terminal, so that the switch is in an open state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110632226.3A CN113327805B (en) | 2021-06-07 | 2021-06-07 | Enclosed switch and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110632226.3A CN113327805B (en) | 2021-06-07 | 2021-06-07 | Enclosed switch and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113327805A CN113327805A (en) | 2021-08-31 |
| CN113327805B true CN113327805B (en) | 2024-03-26 |
Family
ID=77419936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110632226.3A Active CN113327805B (en) | 2021-06-07 | 2021-06-07 | Enclosed switch and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113327805B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101071703A (en) * | 2007-04-03 | 2007-11-14 | 赵海洋 | Enclosed plug-type high voltage fuse device |
| CN203300530U (en) * | 2013-05-27 | 2013-11-20 | 国家电网公司 | Three-location isolation ground switch and its conductive circuit |
| CN104143462A (en) * | 2013-08-22 | 2014-11-12 | 国家电网公司 | High-voltage direct-current quick switch-on switch and switch fracture structure thereof |
| CN108010789A (en) * | 2017-12-13 | 2018-05-08 | 上海天灵开关厂有限公司 | A kind of high current direct action type three-station with radiator structure |
| CN214203545U (en) * | 2021-02-05 | 2021-09-14 | 陈石川 | Closed isolating switch |
-
2021
- 2021-06-07 CN CN202110632226.3A patent/CN113327805B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101071703A (en) * | 2007-04-03 | 2007-11-14 | 赵海洋 | Enclosed plug-type high voltage fuse device |
| CN203300530U (en) * | 2013-05-27 | 2013-11-20 | 国家电网公司 | Three-location isolation ground switch and its conductive circuit |
| CN104143462A (en) * | 2013-08-22 | 2014-11-12 | 国家电网公司 | High-voltage direct-current quick switch-on switch and switch fracture structure thereof |
| CN108010789A (en) * | 2017-12-13 | 2018-05-08 | 上海天灵开关厂有限公司 | A kind of high current direct action type three-station with radiator structure |
| CN214203545U (en) * | 2021-02-05 | 2021-09-14 | 陈石川 | Closed isolating switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113327805A (en) | 2021-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107887807A (en) | A kind of disconnecting link formula three-station protected type solid insulation ring main unit | |
| CN201893269U (en) | High-voltage disconnector contact component | |
| CN105448578A (en) | Isolation switch and conductor thereof | |
| CN102447228B (en) | High-pressure large-current dry compressed air insulated metal closed switch equipment | |
| CN113327805B (en) | Enclosed switch and working method thereof | |
| CN202816779U (en) | Solid insulated pole | |
| CN102881508A (en) | Solid insulating pole | |
| CN204966367U (en) | Novel indoor high voltage isolator of GN10 | |
| AU2018310524B2 (en) | Circuit breaker for gas insulated switchgear | |
| CN203491172U (en) | Conductive arm structure of high voltage disconnector | |
| CA2946623A1 (en) | Rotary contact system intended to be incorporated into the tubular conductors of a high-voltage switch | |
| CN106356241B (en) | A kind of high stability high-pressure vacuum breaker | |
| CN214203545U (en) | Closed isolating switch | |
| CN107993879A (en) | A kind of three station protected type solid insulation vacuum switch module of disconnecting link formula | |
| CN205609429U (en) | Aerify for cabinet heavy current and seal utmost point post admittedly | |
| CN201215783Y (en) | Novel vacuum loaded switch | |
| CN202434941U (en) | High-voltage and high-current insulating metal closed switch equipment using dry compressed air | |
| CN115050611A (en) | A circuit breaker trip gear for 10kV cubical switchboard | |
| CN105869942A (en) | Three-position isolation switch for switch cabinet | |
| CN109524912B (en) | Integrated circuit breaker and switch cabinet | |
| CN211183105U (en) | Gas-insulated vacuum switch mechanism and gas-insulated switch cabinet | |
| CN205645655U (en) | Cubical switchboard three -station isolation switch | |
| CN214753422U (en) | Contact assembly for high-voltage switch equipment | |
| CN217387001U (en) | Normal-pressure type environment-friendly cabinet switch | |
| CN207624611U (en) | A kind of high pressure on-pole switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |