CN2684353Y - High-voltage gas-insulation combined electric capacitor - Google Patents
High-voltage gas-insulation combined electric capacitor Download PDFInfo
- Publication number
- CN2684353Y CN2684353Y CN 200420004794 CN200420004794U CN2684353Y CN 2684353 Y CN2684353 Y CN 2684353Y CN 200420004794 CN200420004794 CN 200420004794 CN 200420004794 U CN200420004794 U CN 200420004794U CN 2684353 Y CN2684353 Y CN 2684353Y
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- Prior art keywords
- heat pipe
- capacitor
- insulation
- capacitor unit
- casing
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Abstract
The utility model relates to a high-voltage electric capacitor, in particular to a high-voltage gas-insulation combined electric capacitor. The capacitor in the electric network is an apparatus providing reactive power. The high-voltage gas-insulation combined electric capacitor comprises a capacitor unit arranged in a case body. A heat pipe is arrabged between the case body and the capacitor unit. The evaporator section and the condenser section of the heat pipe are made of different materials. The heat pipe can be made into a separate type heat pipe of a closed loop circuit composed of the evaporator section and the condenser section. The general heat pipe type can be adopted. Insulation materials are supported between the bottom of the capacitor unit and the case body. Thus, the voltage resistance intensity is ensured. A radiator is arranged outside the case body for increasing the radiation effect. Due to the adoption of the heat conductive insulation material, the insulation problem of the capacitor unit is reliably solved. Thus, the low voltage grade capacitor unit can constitute the high voltage grade combined capacitor, and the cost is reduced.
Description
Technical field
The utility model relates to a kind of high-voltage power capacitor, is mainly used in to electric power system quadergy is provided.
Background technology
The application of capacitor is very widely in the electric power system, all can be applied to from the power high voltage network to user side, is indispensable equipment in the system.In the prior art, composite type electric power capacitor is divided into oil immersion and gas-insulated two big classes, oil capacitor brings a lot of problems because there is transformer oil will have problems such as leakage, deterioration of oil to operation and maintenance, has not become application trend of electric power system so there is oiling.Existing gas-insulated composite type electric power capacitor majority is not considered heat dissipation problem, for example Chinese patent application number is 99234596 patent, it can solve the firing and explosion prevention problem, but owing to do not consider gas is the non-conductor of heat, make the performance degradation of capacitor in actual applications because of poor heat radiation, be difficult to apply.Number of patent application is that 01212594.6 and 02245786.0 patent has proposed the new method that addresses this problem, promptly adopt the mode of heat pipe heat radiation that heat transferred is gone out between the capacitor unit in casing and casing, but it is the heat pipe heat radiation technology that adopts a kind of material, the evaporation section that is heat pipe is identical with the material that condensation segment adopts, be metallic alloy, can heat conduction but can not insulate, when being applied to capacitor unit when identical with the desired electric pressure of combined capacitor, it is no problem that this heat pipe is used, but when combined capacitor requires when high than the electric pressure of internal capacitor unit, because the material of heat pipe does not have insulation property, the voltage breakdown phenomenon will take place and can not be applied in the middle of the reality at all, this has just limited the possibility of forming the combined capacitor of voltage levels with low-voltage grade capacitor unit, and this is needed in the middle of the reality.
Summary of the invention
The purpose of this utility model provides the insulation combined power capacitor of a kind of novel gases at high pressure, can utilize the capacitor unit of low-voltage grade to form the combined capacitor of voltage levels, thereby can reduce cost the raising performance.
The insulation combined power capacitor of the said gases at high pressure of the utility model, the capacitor unit that comprises assembling in the casing, gassy in the casing of sealing, between casing and the capacitor unit heat pipe is housed, the evaporation section of heat pipe adopts different materials to form with condensation segment, the condensation segment of heat pipe closely is connected with casing, and its evaporation section closely is connected with capacitor unit.Adopt insulating material to support between the bottom of capacitor unit and the casing, to guarantee to form with low-voltage grade capacitor unit the compressive resistance of voltage levels combined capacitor, the compressive resistance at the two ends of this insulation backing material should be greater than 10KV.
Casing is the structure of closed, and is insulation gas filled in the casing, comprises sulphur hexafluoride, nitrogen, dry air etc., and the slight pressure in the casing is higher than outside the casing, thereby guarantees reasonable insulation property, because casing is airtight, can all use indoor and outdoor.
It between casing and the capacitor unit heat pipe.Heat pipe is known one of the most effective heat transfer element, and it can transmit a large amount of heats at a distance by its very little sectional area and need not additionaling power, and its thermal conductivity is considerably beyond any known metal.Heat pipe is airtight structure, the certain vacuum degree of inner maintenance, and be filled with certain liquid, and an end heated liquid can be vaporized in the pipe, becomes liquid again to other end cooling back gas, moves in circles, and the heat pipe two ends are almost not have the temperature difference.The Heat Transfer of Heat Pipe on Heat Pipe ability is surprising, and its limit of the heat pipe of 4 millimeters internal diameters is transmitted energy can surpass 5 kilowatts, and the heat on the capacitor unit can be delivered on casing and the radiator very soon.The temperature of capacitor unit should be close with the temperature on the casing radiator, and this also can reduce the temperature rise of whole gas-insulated composite type electric power capacitor.
Its evaporation section of common heat pipe and condensation segment are to adopt same material to form, mostly be metal material, be independent structures or separate type one by one, be used in the gas-insulated composite type electric power capacitor, therefore capacitor unit guest who is not a relative, heat pipe, tank wall three almost are equipotential, this is without any problem when the electric pressure requirement of capacitor unit and combined capacitor is the same, but when the electric pressure of capacitor unit requires less than the electric pressure of combined capacitor, at this moment the voltage breakdown phenomenon will take place, can not use at all.The evaporation section of opposite heat tube can adopt different materials with condensation segment, just can address this problem better, this is because can adopt the material of heat conductive insulating to evaporation section, when satisfying thermal conductivity, satisfy insulation property, as heat-conducting silicon rubber etc., the thermal conductivity of this material should be greater than 0.6W/mK; Connect the supporting section of evaporation section and condensation segment because there is not the demand of heat radiation can adopt insulating material such as plastics etc., the specific insulation of this material should be greater than 1*10
6Europe. centimetre; Condensation segment directly is connected with tank wall, can adopt metal material.
The separate heat pipe that adopts evaporation section and condensation segment to constitute the closed-loop path can reduce the utilance of material, increases contact area, improves radiating effect, and the life-span of separate heat pipe is greater than common heat pipe.
The utility model is compared with existing technology, because evaporation section adopts different materials with condensation segment, can solve the Insulation Problems of general heat pipe well, can realize forming the combined capacitor of voltage levels, reduce cost, improved performance with the capacitor unit of low-voltage grade.
Description of drawings
Accompanying drawing 1 is a side-looking structural representation of the present utility model
Accompanying drawing 2 is a plan structure schematic diagram of the present utility model
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
In Fig. 1,2, the 1st, casing, the 2nd, the capacitor unit in the casing, the 3rd, heat pipe, the 4th, the evaporation section of heat pipe, the 5th, the condensation segment of heat pipe, the 6th, the supporting section of connection evaporation section and condensation segment, the 7th, radiator, the 8th, the supporting section between capacitor unit bottom and the casing.The evaporation section 4 of heat exchange of heat pipe closely contacts with capacitor unit 2, and the heat transferred of capacitor unit 2 is gone out; The condensation segment 5 of heat exchange of heat pipe closely contacts with casing 1, and the outer correspondence position of casing is installed radiator 7, with all heat transferred of inside in air.Heat pipe can be carried out in advance, and injection liquid also vacuumizes.Heat pipe can be made the closed-loop path, is called separate heat pipe, also can make the U tubulose, is called the general expression heat pipe, and its evaporation section, condensation segment, supporting section can bondingly also can adopt injection molding way to connect into an integral body.Adopt insulating material 8 to support between capacitor unit 2 bottoms and the casing 1, to guarantee enough compressive resistances.Casing 1 is airtight at last, also need vacuumize the back and inject other insulating gass, as sulphur hexafluoride, nitrogen etc.
Claims (5)
1, the insulation combined power capacitor of a kind of gases at high pressure, the capacitor unit (2) that comprises assembling in the casing (1), the interior gassy of casing (1) of sealing, between casing (1) and the capacitor unit (2) heat pipe (3) is housed, it is characterized in that: adopt insulating material (8) to support between the bottom of capacitor unit (2) and the casing (1), the compressive resistance at this supporting section (8) two ends is greater than 10KV.
2, the insulation combined power capacitor of gases at high pressure according to claim 1 is characterized in that: its evaporation section of described heat pipe (3) (4) adopts different materials to form with condensation segment (5).
3, according to claim 1 and the insulation combined power capacitor of 2 described gases at high pressure, it is characterized in that: all or part of material therefor of evaporation section (4) tube wall of described heat pipe (3) is a heat-conducting insulation material, and the thermal conductivity of this material is greater than 0.6W/mK.
4, according to the insulation combined power capacitor of the described gases at high pressure of claim 1-3, it is characterized in that: the connection evaporation section (4) of described heat pipe (3) is non-heat-conducting insulation material with all or part of material therefor of the tube wall of the supporting section (6) of condensation segment (5), and the specific insulation of this material is greater than 1*10
6Europe. centimetre
5, according to the insulation combined power capacitor of the described gases at high pressure of claim 1-4, it is characterized in that: described heat pipe (3) constitutes the separate heat pipe in closed type loop for evaporation section (4) and condensation segment (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420004794 CN2684353Y (en) | 2004-03-01 | 2004-03-01 | High-voltage gas-insulation combined electric capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420004794 CN2684353Y (en) | 2004-03-01 | 2004-03-01 | High-voltage gas-insulation combined electric capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2684353Y true CN2684353Y (en) | 2005-03-09 |
Family
ID=34605739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420004794 Expired - Fee Related CN2684353Y (en) | 2004-03-01 | 2004-03-01 | High-voltage gas-insulation combined electric capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2684353Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950665A (en) * | 2010-09-11 | 2011-01-19 | 铜陵市新泰电容电器有限责任公司 | Grounded capacitor having radiating fin |
| CN102013318A (en) * | 2010-09-11 | 2011-04-13 | 铜陵市新泰电容电器有限责任公司 | Capacitor with functions of heat radiating and positioning |
| CN107993841A (en) * | 2017-11-30 | 2018-05-04 | 宁波博恩电气有限公司 | Capacitor radiator |
-
2004
- 2004-03-01 CN CN 200420004794 patent/CN2684353Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950665A (en) * | 2010-09-11 | 2011-01-19 | 铜陵市新泰电容电器有限责任公司 | Grounded capacitor having radiating fin |
| CN102013318A (en) * | 2010-09-11 | 2011-04-13 | 铜陵市新泰电容电器有限责任公司 | Capacitor with functions of heat radiating and positioning |
| CN107993841A (en) * | 2017-11-30 | 2018-05-04 | 宁波博恩电气有限公司 | Capacitor radiator |
| CN107993841B (en) * | 2017-11-30 | 2019-03-15 | 宁波博恩电气有限公司 | Capacitor radiator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |