CN201549440U - Novel single fracture and singlecylinder arc extinguish chamber of self-energized type high pressure sulfur hexafluoride breaker - Google Patents
Novel single fracture and singlecylinder arc extinguish chamber of self-energized type high pressure sulfur hexafluoride breaker Download PDFInfo
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- CN201549440U CN201549440U CN200920033878XU CN200920033878U CN201549440U CN 201549440 U CN201549440 U CN 201549440U CN 200920033878X U CN200920033878X U CN 200920033878XU CN 200920033878 U CN200920033878 U CN 200920033878U CN 201549440 U CN201549440 U CN 201549440U
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- sulfur hexafluoride
- high pressure
- hexafluoride breaker
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Abstract
The utility model discloses a novel single fracture and single cylinder arc extinguish chamber of a self-energized type high pressure sulfur hexafluoride breaker, which comprises a static contact mechanism and a moving contact mechanism which are matched with each other to be used together, a moving contact block and an insulating tension pole which drives the moving contact mechanism to move up and down to be switched on and off, wherein the moving contact mechanism is coaxially installed in a cylinder and is driven by the cylinder to be switched on and off, the static contact mechanism, the moving contact mechanism and the moving contact block are all coaxially installed in an arc extinguishing porcelain bushing from top to bottom, the bore of the cylinder is smaller than that of the cylinder of a compressed gas type sulfur hexafluoride circuit breaker by 40-50%, and the cylinder is an air cylinder which still has surplus volume therein when the moving contact mechanism carries out switching off movement. The utility model has reasonable structural design, simple use and operation and good use effect, can fully play triple functions of utilizing the cylinder as an air compression chamber and a thermal expansion chamber as well as having reasonable surplus volume, so the self-energized high pressure sulfur hexafluoride breaker can utilize arc energy to facilitate arc extinguishing when breaking large current, and thereby the utility model reduces the operation work in a larger magnitude.
Description
Technical field
The utility model belongs to the high voltage switchgear technical field, especially relates to a kind of novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chamber that can cut-off 126～252kV self extinguishing type sulfur hexafluoride breaker of 40kA～50kA electric current.
Background technology
The late 20th century, the high pressure sulfur hexafluoride breaker that uses the sulfur hexafluoride gas with excellent insulation and arc extinction performance to make medium has replaced oil-minimum breaker and air circuit, is used widely in electric power system.It is less to use more air pressing type sulfur hexafluoride breaker to have a volume, advantage such as connecting-disconnecting function is strong, and electric life is longer, and is more safe and reliable, but the air pressing type sulfur hexafluoride breaker needs bigger hydraulic pressure of operating work or pneumatic operating mechanism.According to the power department statistics, mechanical breakdown accounts for main and more than 50% of minor failure of primary cut-out in service, and the fault of operating mechanism accounts for more than 80% of mechanical breakdown.Therefore, at initial stage 21st century, developed country endeavours research and utilizes arc energy to help arc extinction when cut-offfing big electric current in the world, thereby reduces the high pressure self extinguishing type sulfur hexafluoride breaker of operating work by a relatively large margin.Developed countries and domestic priority are succeeded in developing 124～126kV self extinguishing type sulphur hexafluoride and are opened circuit, and succeed in developing the self extinguishing type sulfur hexafluoride breaker of 245～252kV drop-out current 40kA in the recent period.Along with transmission of electricity networking voltage improves constantly (the particularly electric network reconstruction of China), press for development 126kV drop-out current 40kA and 252kV drop-out current 50kA self extinguishing type sulfur hexafluoride breaker.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, a kind of novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chamber is provided, its reasonable in design and use simple to operate, result of use good, can give full play to cylinder as plenum chamber, thermal expansion chamber with have reasonable residual volume triple functions, make the self extinguishing type high pressure sulfur hexafluoride breaker when cut-offfing big electric current, utilize arc energy to help arc extinction, thereby reduce operating work by a relatively large margin.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chamber, comprise the static contact mechanism and the dynamic contact mechanism that match and use, movable contact headstock and the drive dynamic contact mechanism installed for dynamic contact mechanism carry out the insulated tension pole of divide-shut brake action up and down, described dynamic contact mechanism is coaxial to be installed in the cylinder and to be driven by cylinder and carry out divide-shut brake, it is characterized in that: described static contact mechanism, dynamic contact mechanism and movable contact headstock are installed in the arc extinguishing insulator and all coaxial setting of three from top to bottom, and the internal diameter of described cylinder is its inner air cylinder that also has residual volume after dynamic contact mechanism carries out the separating brake action than the internal diameter little 40～50% and the cylinder of air pressing type sulfur hexafluoride breaker cylinder.
Described dynamic contact mechanism comprises the moving arcing contact and the moving main contact of arc extinguishing nozzle and difference coaxial package both sides inside and outside the arc extinguishing nozzle, the moving arcing contact coaxial package is in cylinder interior, the air cylinder tie rod of described cylinder bottom is connected with driving it insulated tension pole that moves up and down is coaxial, described air cylinder tie rod be provided be used for pressure release to boring a hole.
The outer surface of described arc extinguishing nozzle spout is provided with a plurality of fins that can improve the nozzle dielectric strength.
The cylinder body of described cylinder is for being made by chromiumcopper or high-strength aluminum alloy material and the moulding cylinder body of its inner surface after hard anodizing is handled.
The utility model compared with prior art has the following advantages:
1, reasonable in design and use easy and simple to handle.
2, the utility model can be given full play to the internal capacity of cylinder (air cylinder) instant heating expanding chamber, specifically be that the heat that makes full use of electric arc temporarily is enclosed in the indoor sulfur hexafluoride gas of thermal expansion and makes it produce high pressure, opening moment and the air cylinder internal cause high velocity air that produces of calming the anger when arc extinguishing nozzle spout unites two into one, air velocity is subjected to the stack on the common direction, blow to electric arc with higher speed, make arc extinction.Be embodied in: the internal diameter of the utility model cylinder is littler by 40～50% than conventional air pressing type SF 6 arc-extinguishing chamber of circuit breaker, littler by about 1/4～1/5 than the product of domestic and international sulfur hexafluoride breaker of the same type, therefore the thermal expansion stresses that produces is higher, the operating work of drive pressure piston is reduced, add the energy that can make full use of electric arc and help arc extinction, so operating work reduces significantly.In the utility model use, because the air cylinder internal diameter is little, thereby the driving merit of arc control device has only 40～50% of air pressing type sulfur hexafluoride breaker.
3, when the breaker open operation EO, a residual volume is arranged in the air cylinder, after promptly separating brake puts in place, the volume between piston face and the air cylinder bottom surface.It is just passable that the general designing requirement of this volume is that the distance between piston face and the air cylinder bottom surface is a bit larger tham the breaker open operation overshoot, and it doesn't matter with connecting-disconnecting function.In the actual design process,, make, still keep higher arc blow-out pressure in the air cylinder, help long arcing reliably to cut-off cut-offfing the long arcing later stage (when breaker open operation speed significantly reduces) of big electric current by residual volume reasonable in design.
4, the spiral shell stone roller type structure of arc extinguishing nozzle spout exterior surface can increase the insulation distance of spout exterior surface by a relatively large margin, improve its dielectric strength, the thermal breakdown that evidence effectively avoids in during cut-offfing the arcing of big electric current electric arc to produce by spout exterior surface in thermal current.
5, applied widely, the utility model is used effectively the time to 126kV～252kV transmission of electricity networking on the self extinguishing type sulfur hexafluoride breaker to 126kV～252kV.
In sum, the utility model reasonable in design and use simple to operate, result of use good, can give full play to cylinder as plenum chamber, thermal expansion chamber with have reasonable residual volume triple functions, make the self extinguishing type high pressure sulfur hexafluoride breaker when cut-offfing big electric current, utilize arc energy to help arc extinction, thereby reduce operating work by a relatively large margin.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the utility model arc extinguishing structure of nozzle schematic diagram.
Fig. 3 is the structural representation of the utility model cylinder.
Description of reference numerals:
The 1-static contact mechanism; The 1-1-air cylinder tie rod; The 2-dynamic contact mechanism;
2-1-arc extinguishing nozzle; 2-2-moves main contact; The 2-3-moving arcing contact;
3-movable contact headstock; The 4-insulated tension pole; 5-is to perforation;
6-1-hex bolts one; 6-2-hex bolts two; 6-3-hex bolts three;
6-4-hex bolts four; 7-1-sealing ring one; 7-2-sealing ring two;
The 8-upper flange; The 9-lower flange; 10-arc extinguishing insulator;
The 11-fin.
Embodiment
As Fig. 1, shown in Figure 3, the movable contact headstock 3 that the utility model comprises the match static contact mechanism 1 used and dynamic contact mechanism 2, install for dynamic contact mechanism 2 and drive dynamic contact mechanism 2 and carry out the insulated tension pole 4 of divide-shut brake action up and down, described dynamic contact mechanism 2 is coaxial to be installed in the cylinder 1 and to be driven by cylinder 1 and carry out divide-shut brake.Described static contact mechanism 1, dynamic contact mechanism 2 and movable contact headstock 3 are installed in the arc extinguishing insulator 10 and all coaxial setting of three from top to bottom, and the internal diameter of described cylinder 1 is its inner air cylinder that also has residual volume after dynamic contact mechanism 2 carries out the separating brake action than the internal diameter little 40～50% and the cylinder 1 of conventional air pressing type sulfur hexafluoride breaker cylinder.The cylinder body of described cylinder 1 is for being made by chromiumcopper or high-strength aluminum alloy material and the moulding cylinder body of its inner surface after hard anodizing is handled.
Described static contact mechanism 1 is installed in arc extinguishing insulator 10 tops by last insulation support and upper flange 8, and install and fix by hex bolts one 6-1 and hex bolts two 6-2 respectively between between arc extinguishing insulator 10 and the upper flange 8 and between described upward insulation support and the upper flange 8, described upper flange 8 is provided with sealing ring one 7-1 with the junction of arc extinguishing insulator 10.Equally, described movable contact headstock 3 is by insulation support and lower flange 9 are installed in arc extinguishing insulator 10 bottoms down, and install and fix by hex bolts one 6-1 and hex bolts two 6-2 respectively between between arc extinguishing insulator 10 and the lower flange 9 and between described support of insulation down and the lower flange 9, described lower flange 9 is provided with sealing ring two 7-2 with the junction of arc extinguishing insulator 10.
In the present embodiment, described dynamic contact mechanism 2 comprises the moving arcing contact 2-3 and the moving main contact 2-2 of arc extinguishing nozzle 2-1 and difference coaxial package both sides inside and outside arc extinguishing nozzle 2-1, moving arcing contact 2-3 coaxial package is in cylinder 1 inside, the air cylinder tie rod 1-1 of described cylinder 1 bottom and its 4 coaxial connections of insulated tension pole that moves up and down of drive, described air cylinder tie rod 1-1 be provided be used for pressure release to boring a hole 5.
In conjunction with Fig. 2, the outer surface of described arc extinguishing nozzle 2-1 spout is provided with a plurality of fins 11 that can improve the nozzle dielectric strength, and described outer surface integral body is spiral shell stone roller shape.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection range of technical solutions of the utility model according to the utility model technical spirit.
Claims (4)
1. novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chamber, static contact mechanism (1) and dynamic contact mechanism (2) that comprising matches uses, movable contact headstock (3) and the drive dynamic contact mechanism (2) installed for dynamic contact mechanism (2) carry out the insulated tension pole (4) of divide-shut brake action up and down, described dynamic contact mechanism (2) is coaxial to be installed in the cylinder (1) and to be driven by cylinder (1) and carry out divide-shut brake, it is characterized in that: described static contact mechanism (1), dynamic contact mechanism (2) and movable contact headstock (3) are installed in the arc extinguishing insulator (10) and all coaxial setting of three from top to bottom, and the internal diameter of described cylinder (1) is its inner air cylinder that also has residual volume after dynamic contact mechanism (2) carries out the separating brake action than the internal diameter little 40～50% and the cylinder (1) of air pressing type sulfur hexafluoride breaker cylinder.
2. according to the described novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chamber of claim 1, it is characterized in that: described dynamic contact mechanism (2) comprises the moving arcing contact (2-3) and the moving main contact (2-2) of arc extinguishing nozzle (2-1) and difference coaxial package both sides inside and outside arc extinguishing nozzle (2-1), moving arcing contact (2-3) coaxial package is in cylinder (1) inside, the air cylinder tie rod (1-1) of described cylinder (1) bottom with drive its coaxial connection of insulated tension pole that moves up and down (4), described air cylinder tie rod (1-1) be provided be used for pressure release to bore a hole (5).
3. according to claim 1 or 2 described novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chambers, it is characterized in that: the outer surface of described arc extinguishing nozzle (2-1) spout is provided with a plurality of fins (11) that can improve the nozzle dielectric strength.
4. according to claim 1 or 2 described novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chambers, it is characterized in that: the cylinder body of described cylinder (1) is for being made by chromiumcopper or high-strength aluminum alloy material and the moulding cylinder body of its inner surface after hard anodizing is handled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920033878XU CN201549440U (en) | 2009-07-13 | 2009-07-13 | Novel single fracture and singlecylinder arc extinguish chamber of self-energized type high pressure sulfur hexafluoride breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920033878XU CN201549440U (en) | 2009-07-13 | 2009-07-13 | Novel single fracture and singlecylinder arc extinguish chamber of self-energized type high pressure sulfur hexafluoride breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201549440U true CN201549440U (en) | 2010-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920033878XU Expired - Lifetime CN201549440U (en) | 2009-07-13 | 2009-07-13 | Novel single fracture and singlecylinder arc extinguish chamber of self-energized type high pressure sulfur hexafluoride breaker |
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|---|---|
| CN (1) | CN201549440U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599391B (en) * | 2009-07-13 | 2013-02-27 | 西安森源配电自动化设备有限公司 | Novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chamber |
-
2009
- 2009-07-13 CN CN200920033878XU patent/CN201549440U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599391B (en) * | 2009-07-13 | 2013-02-27 | 西安森源配电自动化设备有限公司 | Novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chamber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100811 Effective date of abandoning: 20090713 |
|
| RGAV | Abandon patent right to avoid regrant |