CN105390329B - A kind of column type circuit breaker housing and the column type circuit breaker using the Shell of circuit breaker - Google Patents
A kind of column type circuit breaker housing and the column type circuit breaker using the Shell of circuit breaker Download PDFInfo
- Publication number
- CN105390329B CN105390329B CN201510802718.7A CN201510802718A CN105390329B CN 105390329 B CN105390329 B CN 105390329B CN 201510802718 A CN201510802718 A CN 201510802718A CN 105390329 B CN105390329 B CN 105390329B
- Authority
- CN
- China
- Prior art keywords
- sleeve
- arc
- chutes
- pillar
- pipe
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 230000008450 motivation Effects 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 6
- 229910052573 porcelain Inorganic materials 0.000 description 8
- 238000009835 boiling Methods 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 230000005404 monopole Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/56—Gas reservoirs
- H01H33/561—Gas reservoirs composed of different independent pressurised compartments put in communication only after their assemblage
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
Landscapes
- Gas-Insulated Switchgears (AREA)
- Circuit Breakers (AREA)
Abstract
A kind of column type circuit breaker the present invention relates to column type circuit breaker housing and using the Shell of circuit breaker,A kind of column type circuit breaker housing,Including operating mechanism housing,Arc-chutes sleeve pipe and pillar sleeve,Arc-chutes sealing dividing plate is provided between arc-chutes sleeve pipe and pillar sleeve to isolate the inner chamber of arc-chutes sleeve pipe with the inner chamber of pillar sleeve,It is provided with the housing of arc-chutes sleeve pipe with the intracavity inter-connection of arc-chutes sleeve pipe for the arc-chutes sleeve pipe inflation inlet inflated into arc-chutes sleeve pipe,It is provided with the housing of pillar sleeve with the intracavity inter-connection of pillar sleeve for the pillar sleeve inflation inlet inflated into pillar sleeve,Arc-chutes sleeve pipe is realized can individually to inflate as independent unit with pillar sleeve,Different gas can be filled with arc-chutes sleeve pipe and pillar sleeve,Such as a kind of insulating gas in addition to SF6 can be filled with pillar sleeve or is filled with the relatively low mix insulation gas of SF6 contents,SF6 usage amount is reduced with this,Reduce cost and the pollution to environment.
Description
A kind of column type circuit breaker the present invention relates to column type circuit breaker housing and using the Shell of circuit breaker.
Background technology
SF6Breaker is widely used to high pressure, super-pressure, extra-high voltage with its excellent extinguishing electric arc and insulating properties
In system, SF6Boiling point it is relatively low, the gas pressure of existing breaker is between 0.5MPa-0.7MPa, SF6Breaker can not expire
Foot -40 DEG C, -50 DEG C of low temperature use environment, for this problem, domestic and international widespread practice is to use mixed gas scheme solution
Certainly SF6Liquefied problem, such as SF occur at low temperature6With N2Mixed gas, SF6With CF4Mixed gas etc., but it is mixed at these
Close in gas with SF6Based on.At present, most of column type circuit breakers include arc-chutes, insulation column and operating mechanism, arc-chutes
The top of insulation column is arranged at, is respectively arranged with arc-chutes sleeve pipe and pillar sleeve on the outside of arc-chutes and insulation column, two
Person forms the insulating coating of column type circuit breaker together, and the arc-chutes sleeve pipe of most of column type circuit breakers is connected with both pillar sleeves
Logical, gas componant is consistent.As notification number for CN203910669U Chinese utility model patent provides a kind of 252KV families
Outer high-voltage alternating porcelain knob mixed gas breaker, including three monopoles, each monopole include single-pole circuit breaker, and each monopole breaks
Road device is arc-chutes sleeve pipe and strut porcelain bushing i.e. pillar sleeve including interrupting porcelain insulator, and interrupting porcelain insulator is installed on strut porcelain bushing
Upper end, interrupting porcelain insulator inside include static contact system and movable contact system for arc-chutes, filled inside arc-chutes and strut porcelain bushing
There is the SF as dielectric6And CF4Mixed gas.Such breaker is there is following shortcoming, inside arc-chutes and strut porcelain bushing
Filled with SF6Mixed gas based on gas causes SF6Gas usage amount is big, and cost is higher and endangers environment.
The content of the invention
The shortcomings that it is an object of the invention to overcome prior art, there is provided a kind of arc-chutes and pillar sleeve can be inflated individually
To reduce SF6The column type circuit breaker housing of usage amount, while use the breaker the present invention also aims to provide one kind
The column type circuit breaker of housing.
To achieve the above object, a kind of column type circuit breaker housing of the invention adopts the following technical scheme that：A kind of pillar is broken
Road device housing, including the arc-chutes sleeve pipe and pillar sleeve that axis is vertically extending, the arc-chutes sleeve pipe and branch column sleeve
Arc-chutes sealing dividing plate is provided between pipe to isolate the inner chamber of arc-chutes sleeve pipe with the inner chamber of pillar sleeve and do not connect mutually, is gone out
It is provided with the housing of arc chamber sleeve pipe with the intracavity inter-connection of arc-chutes sleeve pipe for the arc extinguishing inflated into arc-chutes sleeve pipe
Room sleeve pipe inflation inlet, it is provided with the housing of pillar sleeve and is used to filling into pillar sleeve with the intracavity inter-connection of pillar sleeve
The pillar sleeve inflation inlet of gas, the driving member sealing that arc-chutes sealing dividing plate is provided with the operating mechanism for supplying breaker are slidably matched
Driving hole.
The column type circuit breaker housing also includes being used for installing the operating mechanism housing of operating mechanism, operating mechanism housing with
Be provided between pillar sleeve pillar sleeve sealing dividing plate the inner chamber of operating mechanism housing is isolated with the inner chamber of pillar sleeve and
Do not connect mutually, be provided with being connected with arc-chutes sleeve pipe inflation inlet at arc-chutes sleeve pipe inflation inlet and extend downward into branch column sleeve
The gas circuit communicating pipe of seal of tube dividing plate, pillar sleeve, which seals to be provided with dividing plate, to be filled the gas circuit communicating pipe connected with gas circuit communicating pipe
Gas port, the pillar sleeve inflation inlet are arranged on pillar sleeve sealing dividing plate.
The arc-chutes sleeve pipe inflation inlet is arranged on arc-chutes sealing dividing plate and in the inner chamber of pillar sleeve, gas circuit
Communicating pipe, gas circuit communicating pipe inflation inlet and pillar sleeve inflation inlet are respectively positioned in the inner chamber of pillar sleeve.
To achieve the above object, a kind of column type circuit breaker of the invention adopts the following technical scheme that：A kind of column type circuit breaker,
Including column type circuit breaker housing and the operating mechanism that is arranged inside Shell of circuit breaker, column type circuit breaker housing includes axis along upper
The arc-chutes sleeve pipe and pillar sleeve of lower direction extension, are provided with arc-chutes sealing between the arc-chutes sleeve pipe and pillar sleeve
The inner chamber of arc-chutes sleeve pipe is isolated and not connected mutually by dividing plate with the inner chamber of pillar sleeve, is provided with the housing of arc-chutes sleeve pipe
With the intracavity inter-connection of arc-chutes sleeve pipe for the arc-chutes sleeve pipe inflation inlet inflated into arc-chutes sleeve pipe, pillar sleeve
It is provided with housing with the intracavity inter-connection of pillar sleeve for the pillar sleeve inflation inlet inflated into pillar sleeve, arc extinguishing
Room sealing dividing plate is provided with the driving hole being slidably matched for the driving member sealing of the operating mechanism of breaker.
The column type circuit breaker housing also includes being used for installing the operating mechanism housing of operating mechanism, operating mechanism housing with
Be provided between pillar sleeve pillar sleeve sealing dividing plate the inner chamber of operating mechanism housing is isolated with the inner chamber of pillar sleeve and
Do not connect mutually, be provided with being connected with arc-chutes sleeve pipe inflation inlet at arc-chutes sleeve pipe inflation inlet and extend downward into branch column sleeve
The gas circuit communicating pipe of seal of tube dividing plate, pillar sleeve, which seals to be provided with dividing plate, to be filled the gas circuit communicating pipe connected with gas circuit communicating pipe
Gas port, the pillar sleeve inflation inlet are arranged on pillar sleeve sealing dividing plate.
The arc-chutes sleeve pipe inflation inlet is arranged on arc-chutes sealing dividing plate and in the inner chamber of pillar sleeve, gas circuit
Communicating pipe, gas circuit communicating pipe inflation inlet and pillar sleeve inflation inlet are respectively positioned in the inner chamber of pillar sleeve.
Arc extinguishing is connected at the arc-chutes sleeve pipe inflation inlet, pillar sleeve inflation inlet and gas circuit communicating pipe inflation inlet
Room sleeve pipe gas-charging connection, pillar sleeve gas-charging connection and gas circuit communicating pipe gas-charging connection, one end of gas circuit communicating pipe, which is communicated in, goes out
On arc chamber sleeve pipe gas-charging connection, the other end is communicated on gas circuit communicating pipe gas-charging connection.
Beneficial effects of the present invention are：Arc-chutes sealing dividing plate is provided between arc-chutes sleeve pipe and pillar sleeve by arc extinguishing
The inner chamber of room sleeve pipe isolates with the inner chamber of pillar sleeve and not connected mutually, is provided with the housing of arc-chutes sleeve pipe and arc-chutes set
The intracavity inter-connection of pipe for the arc-chutes sleeve pipe inflation inlet inflated into arc-chutes sleeve pipe, set on the housing of pillar sleeve
Have with the intracavity inter-connection of pillar sleeve for the pillar sleeve inflation inlet inflated into pillar sleeve, realize arc-chutes set
Pipe can be inflated individually with pillar sleeve as independent unit, and different gas can be filled with arc-chutes sleeve pipe and pillar sleeve
It can be filled with except SF in body, such as pillar sleeve6A kind of outer insulating gas is filled with SF6The relatively low mix insulation gas of content, with
This reduces SF6Usage amount, reduce cost and the pollution to environment.
Further, arc-chutes sleeve pipe inflation inlet, pillar sleeve inflation inlet, gas circuit communicating pipe inflation inlet and gas circuit communicating pipe
The inside of pillar sleeve is respectively positioned on, maintains the integrally-built integrality of the breaker, and prevent due to gas circuit communicating pipe
Leakage cause SF6Leaking for gas and pollute environment or damage operating personnel health of human body.
Brief description of the drawings
Fig. 1 is the structural representation of the column type circuit breaker housing in a kind of one embodiment of column type circuit breaker of the present invention
Figure.
Embodiment
A kind of column type circuit breaker, including Shell of circuit breaker and the operating mechanism being arranged inside Shell of circuit breaker, actuating machine
Structure is used for the divide-shut brake action for manipulating the structure of contact terminal in arc-chutes, Shell of circuit breaker, as shown in figure 1, including for installing behaviour
The operating mechanism housing 4 of motivation structure, axial direction vertically extending arc-chutes sleeve pipe 1 and pillar sleeve 2, arc-chutes sleeve pipe 1,
Pillar sleeve 2 and operating mechanism housing 4 are provided with arc extinguishing sequentially into upper arrangement downwards between arc-chutes sleeve pipe 1 and pillar sleeve 2
Room seals dividing plate 7, and arc-chutes sealing dividing plate 7 can be formed by the bottom wall of arc-chutes sleeve pipe 1, and arc-chutes seal dividing plate 7 by arc-chutes
The inner chamber of sleeve pipe 1 keeps apart with the inner chamber of pillar sleeve 2 and not connected mutually, is set between operating mechanism housing 4 and pillar sleeve 2
It is equipped with pillar sleeve sealing dividing plate 8 to isolate the inner chamber of operating mechanism housing 4 with the inner chamber of pillar sleeve 2 and do not connect mutually, props up
Column sleeve seal of tube dividing plate 8 can be formed by the bottom wall of pillar sleeve 2.Positioned at the inside of pillar sleeve 2 on arc-chutes sealing dividing plate 7
It is provided with part and is filled with the arc-chutes sleeve pipe for being inflated into arc-chutes sleeve pipe 1 of the intracavity inter-connection of arc-chutes sleeve pipe 1
Gas port 9, arc-chutes sleeve pipe gas-charging connection is connected with arc-chutes sleeve pipe inflation inlet 9, and arc-chutes sealing dividing plate 7 is provided with for open circuit
The driving hole that the driving member sealing of the operating mechanism of device is slidably matched.On pillar sleeve sealing dividing plate 8 inside pillar sleeve 2
Part on be provided with pillar sleeve inflation inlet 5 and gas circuit communicating pipe inflation inlet 6, pillar sleeve inflation inlet 5 and gas circuit communicating pipe
Be connected to pillar sleeve gas-charging connection and gas circuit communicating pipe gas-charging connection at inflation inlet 6, pillar sleeve 2 be internally provided with by
Gas circuit communicating pipe 3 made of insulating materials, gas circuit communicating pipe 3 one end be communicated on arc-chutes sleeve pipe gas-charging connection, the other end connect
Pass through on gas circuit communicating pipe gas-charging connection.
In use, it is filled with inside arc-chutes sleeve pipe 1 with SF6Based on the mixing with another gas mixing it is exhausted
Edge gas, wherein SF6Gas volume ratio more than 50%, wherein the boiling point of another gas is less than SF6Boiling point, and insulating properties
Can be excellent, nontoxic, harmless, this gas can be CF4Or N2Or CO2.And N can be individually filled with inside pillar sleeve 22Gas,
Or N2Based on and SF6The mix insulation gas of mixing, now SF6Gas volume ratio be less than 50%.Compared to prior art
Middle arc-chutes sleeve pipe is connected with pillar sleeve, and the two gas componant for being filled with is identical to be compared, and the column type circuit breaker of this structure subtracts
SF is lacked6Usage amount, so as to reduce cost and reduce the harm to environment.
In other embodiments of the invention, arc-chutes inflation inlet can also be arranged at other side walls of arc-chutes sleeve pipe
On；Pillar sleeve inflation inlet can also be arranged in the side wall of pillar sleeve；Gas circuit communicating pipe can also be arranged at pillar sleeve
Outside；Gas circuit communicating pipe, inflation inlet can also be arranged in the side wall of pillar sleeve；Pillar sleeve sealing dividing plate can be by actuating
The roof of mechanism shell is formed.
A kind of embodiment of column type circuit breaker housing and the Shell of circuit breaker in each embodiment of above-mentioned column type circuit breaker
Embodiment is identical, and here is omitted.
Claims (2)
1. a kind of column type circuit breaker housing, including the arc-chutes sleeve pipe and pillar sleeve that axis is vertically extending, its feature
It is：Arc-chutes sealing dividing plate is provided between the arc-chutes sleeve pipe and pillar sleeve by the inner chamber of arc-chutes sleeve pipe and pillar
The inner chamber of sleeve pipe isolates and not connected mutually, and the use with the intracavity inter-connection of arc-chutes sleeve pipe is provided with the housing of arc-chutes sleeve pipe
In being provided with the inner chamber with pillar sleeve on the arc-chutes sleeve pipe inflation inlet inflated into arc-chutes sleeve pipe, the housing of pillar sleeve
What is be connected is provided with the behaviour for breaker for the pillar sleeve inflation inlet inflated into pillar sleeve, arc-chutes sealing dividing plate
The driving hole that the driving member sealing of motivation structure is slidably matched, the column type circuit breaker housing also include being used to install operating mechanism
Operating mechanism housing, pillar sleeve sealing dividing plate is provided between operating mechanism housing and pillar sleeve by operating mechanism housing
Inner chamber isolates with the inner chamber of pillar sleeve and not connected mutually, is provided with arc-chutes sleeve pipe inflation inlet and arc-chutes sleeve pipe inflation inlet
Gas circuit communicating pipe that is being connected and extending downward into pillar sleeve sealing dividing plate, it is provided with and gas on pillar sleeve sealing dividing plate
The gas circuit communicating pipe inflation inlet of road communicating pipe connection, the pillar sleeve inflation inlet are arranged on pillar sleeve sealing dividing plate, institute
State arc-chutes sleeve pipe inflation inlet to be arranged on arc-chutes sealing dividing plate and in the inner chamber of pillar sleeve, gas circuit communicating pipe, gas
Road communicating pipe inflation inlet and pillar sleeve inflation inlet be respectively positioned in the inner chamber of pillar sleeve, the arc-chutes sleeve pipe inflation inlet, branch
Arc-chutes sleeve pipe gas-charging connection, pillar sleeve gas-charging connection are connected at column sleeve pipe inflation inlet and gas circuit communicating pipe inflation inlet
With gas circuit communicating pipe gas-charging connection, one end of gas circuit communicating pipe is communicated on arc-chutes sleeve pipe gas-charging connection, and the other end is communicated in
On gas circuit communicating pipe gas-charging connection.
2. a kind of column type circuit breaker, including column type circuit breaker housing and the operating mechanism being arranged inside Shell of circuit breaker, pillar
Shell of circuit breaker includes the vertically extending arc-chutes sleeve pipe and pillar sleeve of axis, it is characterised in that：The arc-chutes
Arc-chutes sealing dividing plate is provided between sleeve pipe and pillar sleeve to isolate the inner chamber of arc-chutes sleeve pipe with the inner chamber of pillar sleeve
And do not connect mutually, it is provided with the housing of arc-chutes sleeve pipe and is used for the intracavity inter-connection of arc-chutes sleeve pipe to arc-chutes sleeve pipe
The arc-chutes sleeve pipe inflation inlet of middle inflation, be provided with the housing of pillar sleeve with the intracavity inter-connection of pillar sleeve be used for
The pillar sleeve inflation inlet inflated in pillar sleeve, arc-chutes sealing dividing plate are provided with the driving member of the operating mechanism for breaker
The driving hole being slidably matched is sealed, the column type circuit breaker housing also includes being used for the operating mechanism housing for installing operating mechanism,
Pillar sleeve sealing dividing plate is provided between operating mechanism housing and pillar sleeve by the inner chamber of operating mechanism housing and branch column sleeve
Pipe inner chamber isolation and do not connect mutually, be provided with arc-chutes sleeve pipe inflation inlet it is being connected with arc-chutes sleeve pipe inflation inlet and to
Under extend to gas circuit communicating pipe of pillar sleeve sealing dividing plate, be provided with and connected with gas circuit communicating pipe on pillar sleeve sealing dividing plate
Gas circuit communicating pipe inflation inlet, the pillar sleeve inflation inlet be arranged at pillar sleeve sealing dividing plate on, the arc-chutes sleeve pipe
Inflation inlet is arranged on arc-chutes sealing dividing plate and in the inner chamber of pillar sleeve, gas circuit communicating pipe, the inflation of gas circuit communicating pipe
Mouth and pillar sleeve inflation inlet are respectively positioned in the inner chamber of pillar sleeve, the arc-chutes sleeve pipe inflation inlet, pillar sleeve inflation inlet
Be connected to arc-chutes sleeve pipe gas-charging connection, pillar sleeve gas-charging connection and gas circuit communicating pipe at gas circuit communicating pipe inflation inlet
Gas-charging connection, one end of gas circuit communicating pipe are communicated on arc-chutes sleeve pipe gas-charging connection, and the other end, which is communicated in, to be filled gas circuit communicating pipe
On gas joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510802718.7A CN105390329B (en) | 2015-11-19 | 2015-11-19 | A kind of column type circuit breaker housing and the column type circuit breaker using the Shell of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510802718.7A CN105390329B (en) | 2015-11-19 | 2015-11-19 | A kind of column type circuit breaker housing and the column type circuit breaker using the Shell of circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105390329A CN105390329A (en) | 2016-03-09 |
| CN105390329B true CN105390329B (en) | 2018-03-23 |
Family
ID=55422501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510802718.7A Active CN105390329B (en) | 2015-11-19 | 2015-11-19 | A kind of column type circuit breaker housing and the column type circuit breaker using the Shell of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105390329B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108198729A (en) * | 2018-02-11 | 2018-06-22 | 中国西电电气股份有限公司 | A kind of double gas chamber high-pressure vacuum breakers |
| CN112103129A (en) * | 2020-08-11 | 2020-12-18 | 平高集团有限公司 | Double-chamber arc extinguish chamber |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101329964A (en) * | 2008-04-25 | 2008-12-24 | 西安交通大学 | Non-SF6 gas insulative outdoor high voltage vacuum breaker |
| CN203312142U (en) * | 2013-06-18 | 2013-11-27 | 浙江麦格电气有限公司 | Vacuum circuit breaker |
| CN203910669U (en) * | 2014-06-30 | 2014-10-29 | 中国西电电气股份有限公司 | 252kV outdoor high-voltage alternating-current porcelain column type mixed gas circuit breaker |
| CN204067166U (en) * | 2014-07-01 | 2014-12-31 | 南京南瑞集团公司 | A kind of novel 126kV self extinguishing type SF6 primary cut-out |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012033363A (en) * | 2010-07-30 | 2012-02-16 | Toshiba Corp | Insulator type switchgear |
-
2015
- 2015-11-19 CN CN201510802718.7A patent/CN105390329B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101329964A (en) * | 2008-04-25 | 2008-12-24 | 西安交通大学 | Non-SF6 gas insulative outdoor high voltage vacuum breaker |
| CN203312142U (en) * | 2013-06-18 | 2013-11-27 | 浙江麦格电气有限公司 | Vacuum circuit breaker |
| CN203910669U (en) * | 2014-06-30 | 2014-10-29 | 中国西电电气股份有限公司 | 252kV outdoor high-voltage alternating-current porcelain column type mixed gas circuit breaker |
| CN204067166U (en) * | 2014-07-01 | 2014-12-31 | 南京南瑞集团公司 | A kind of novel 126kV self extinguishing type SF6 primary cut-out |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105390329A (en) | 2016-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100530480C (en) | High-voltage vacuum circuit breaker with mono-fracture voltage to 252kV | |
| CN105390329B (en) | A kind of column type circuit breaker housing and the column type circuit breaker using the Shell of circuit breaker | |
| CN210430704U (en) | Inside observation window of SF6 insulating looped netowrk cabinet gas tank | |
| CN201134639Y (en) | 72.5KV gas-insulated metal-enclosed switchgear | |
| GB232808A (en) | Electric switches | |
| CN103198970B (en) | Vacuum envelope with double-fracture structure | |
| CN207217394U (en) | A kind of outdoor vacuum primary cut-out | |
| CN101521360A (en) | Insulation mode for metal closed combined electrical appliance | |
| CN108198729A (en) | A kind of double gas chamber high-pressure vacuum breakers | |
| CN104112999B (en) | A kind of solid insulation ring main unit | |
| CN201289813Y (en) | Sulfur hexafluoride gas-filled forcer device for high-voltage circuit-breaker | |
| CN202712037U (en) | Tank type high voltage vacuum circuit breaker with three-phase common structure | |
| CN201725724U (en) | Improved type high voltage breaker | |
| CN104061341A (en) | Multifunctional SF6 valve with temperature compensation and high sealing performance | |
| TW200737634A (en) | Gas insulated electric equipment | |
| CN207896550U (en) | Solid insulation ring main unit | |
| CN102545089B (en) | Fully closed solid insulated switch insulating cover | |
| CN206820353U (en) | Gas-filling cabinet | |
| CN101807489A (en) | Three-station switching tube | |
| CN203135303U (en) | Environmentally-friendly gas-insulated vacuum sealed-type switch device | |
| CN202434410U (en) | Tank-type high pressure vacuum circuit breaker | |
| CN202797743U (en) | Casing inflation flange | |
| CN203983830U (en) | A kind of solid insulation ring main unit | |
| JP2012033363A (en) | Insulator type switchgear | |
| CN207234267U (en) | A kind of Inflatable ring main unit isolation and arc-chutes insulating supporting structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |