CN101075729B - Environmental-protective gas-insulating combined electric appliance - Google Patents
Environmental-protective gas-insulating combined electric appliance Download PDFInfo
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- CN101075729B CN101075729B CN2006100847028A CN200610084702A CN101075729B CN 101075729 B CN101075729 B CN 101075729B CN 2006100847028 A CN2006100847028 A CN 2006100847028A CN 200610084702 A CN200610084702 A CN 200610084702A CN 101075729 B CN101075729 B CN 101075729B
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Abstract
This is an environment protection gas insulation electric apparatus set. The apparatus set is of several sealed containers filled with low pressure dry air, each of them envelops several switches. Insulation partition is installed between sealed container and outer circuit, as well as each sealed containers. The pressure of air is 0-0.1MPa and the water content is lower than -40oC dew point.
Description
Technical field
The present invention relates to electrical power trans mission/distribution system field in the electric power system, particularly the insulation in combined electric appliance field of the following grade of rated voltage of 12kV (containing) in the electrical power trans mission/distribution system specifically is meant a kind of environmental-protective gas-insulating combined electric appliance.
Background technology
As everyone knows, in the gas insulated combined electrical equipment open circuit between the electrode, the insulation gas between the grounding electrode, between the phase electrode or between the charged part etc., use be air or sulphur hexafluoride; Sulphur hexafluoride becomes the main flow of insulating gas owing to excellent performances such as its proof voltage intensity and extinguishing arc abilities.But sulphur hexafluoride can cause the problem of the greenhouse effects of the earth of earth atmosphere greenhouse effect to cause sulphur hexafluoride to be combined to the pollution problem of toxic gas with the contingency accident, improves constantly at environmental protection consciousness in recent years, and the use of sulphur hexafluoride is restricted gradually.
On the other hand, the part that needs most inspection in the gas insulated combined electrical equipment is a circuit breaker, under the situation of using sulphur hexafluoride as insulating gas, each inspection all needs the sulphur hexafluoride in the electrical equipment is reclaimed and inflation again, when reclaiming and inflate again for the loss that replenishes sulphur hexafluoride partly, need to reclaim and the problem of inflating treatment facility again with regard to deriving, for the very inconvenience of maintenance of equipment.
In Japan's " spy opens clear 60-141105 number " patent gazette, disclosed and used dry air to replace the technology of sulphur hexafluoride as insulating gas.In this technology, dry air system utilizes the force (forcing) pump compression to be stored in the withstand voltage gas bomb, when needed, offers gas insulated combined electrical equipment by this steel cylinder, uses with non-pressurised state in gas insulated combined electrical equipment.
But gas insulated combined electrical equipment is because the miniaturization of market demand trend recently, because such miniaturization trend, make to have more excellent proof voltage intensity, and the charged assembly in the closed container is done have better external form and configuring design to satisfy the technical specification condition of electrical equipment for the insulating gas in the closed container.
Summary of the invention
The objective of the invention is to have overcome above-mentioned shortcoming of the prior art, a kind of environmental-protective gas-insulating combined electric appliance that can satisfy the requirement of the said goods technical specification and in recent years the shape of charged assembly in the requirement of gas insulated combined electrical equipment, the innovation research planning and designing closed container and configuration, research and development withstand voltage properties are equal to the air insulation effect of traditional sulfur hexafluoride gas-insulating combined electrical apparatus is provided.
In order to realize above-mentioned purpose, environmental-protective gas-insulating combined electric appliance of the present invention has following formation:
This environmental-protective gas-insulating combined electric appliance, its main feature is, described combined electrical apparatus has several closed containers of filling the pure air of dry low pressure, all accommodate several derailing switches in each closed container, all be connected with the insulation gap device between described closed container and the outside line and between each closed container, and the pure air pressure of described dry low pressure is 0～0.1MPa, and the water content of the pure air of dry low pressure is-40 ℃ below the dew point.
Dry low-pressure air in the described closed container is for directly to fill gained by the pure air of high pressure of steel cylinder splendid attire.
Described each derailing switch includes live part and grounded part, between this live part and the grounded part and between each live part insulation barrier is not set.
Described derailing switch is main circuit switch or isolates the ground connection three-station.
Described main circuit switch is a vacuum circuit-breaker.
Described isolation ground connection three-station is a casket cutter type contact-making switch.
Described insulation gap device is the three phase isolated spacer, and is provided with the charged display unit of capacitive on each three phase isolated spacer.
Adopted the environmental-protective gas-insulating combined electric appliance of this invention, satisfied aforesaid for the requirement of product specification and in recent years to the requirement of gas insulated combined electrical equipment, innovate the shape and the configuration of charged assembly in the research program design closed container, obtained the environmental-protective gas-insulating combined electric appliance that withstand voltage properties is equal to the air insulation effect of traditional sulfur hexafluoride gas-insulating combined electrical apparatus; Moreover, because the expendable insulation barrier that need use between the live part of the present invention can not cause the epoxy resin of environmental pollution to make, and when electrical equipment is safeguarded or overhaul, pure air in the closed container can directly discharge, and after maintenance is finished, can directly fill commercially available pure air, thereby than safety was convenient more in the past.
Description of drawings
Fig. 1 is the structural representation of first kind of embodiment of environmental-protective gas-insulating combined electric appliance of the present invention.
Fig. 2 is the structural representation of second kind of embodiment of environmental-protective gas-insulating combined electric appliance of the present invention.
Embodiment
In order more to be expressly understood technology contents of the present invention, the embodiment that below is directed to the environmental-protective gas-insulating combined electric appliance that three-phase circuit of the present invention uses further elaborates.
This environmental-protective gas-insulating combined electric appliance, wherein, described combined electrical apparatus 1 has the closed container 2,3 of filling the pure air of dry low pressure, all accommodates several derailing switches in each closed container, and described derailing switch is main circuit switch 31 or isolates ground connection three-station 22; Described main circuit switch 31 is a vacuum circuit-breaker 31; Described isolation ground connection three-station 22 is a casket cutter type contact-making switch 22; Described each derailing switch includes live part and grounded part, between this live part and the grounded part and between each live part insulation barrier is not set; Between described closed container 2,3 and the outside line and all be connected with the insulation gap device between each closed container, described insulation gap device is the three phase isolated spacer, and is provided with the charged display unit of capacitive on each three phase isolated spacer; The pure air pressure of described dry low pressure is 0～0.1MPa, and the water content of the pure air of dry low pressure is-40 ℃ below the dew point, and the dry low-pressure air in the described closed container is for directly to fill gained by the pure air of high pressure of steel cylinder splendid attire.
Embodiment one
See also shown in Figure 1, it is the structure key diagram of first kind of embodiment of environmental-protective gas-insulating combined electric appliance of the present invention, comprising environmental-protective gas-insulating combined electric appliance 1, go up interval closed container 2, high pressure resistant insulation supports 21, EDS three station casket cutter type isolating switches 22, three-phase bus 23, be arranged on and separate, the charged display unit 101 of capacitive on the insulation gap device 91 in following interval, following interval closed container 3, vacuum circuit-breaker 31, EDS operating mechanism 4, circuit breaker operation mechanism 5, advance, outlet cable 6, flexibleness stretching capsule 7 is arranged on the charged display unit 104 of capacitive on the three phase isolated spacer 94 that is connected between outside area, EDS three station casket cutter type isolating switches 22 wherein, vacuum circuit-breaker 31 corresponds respectively to each phase position of three-phase bus, and EDS operating mechanism 4, circuit breaker operation mechanism 5, advance, outlet cable 6 is arranged at, between following citadel 2, outside 3; In above-mentioned upper and lower interval 2,3, all fill the pure air of dry low pressure, its rated pressure and water content be respectively 0.03MPa (Gauge) above with-40 ℃ below the dew point.
EDS three station casket cutter type isolating switches 22 are the movable sides that are connected to vacuum circuit-breaker 31 via insulation gap device 91, the fixation side of vacuum circuit-breaker 31 again via insulation gap device 94 be connected between outside area into and out of line cable 6.
Embodiment two
See also shown in Figure 2 again, it is the structure key diagram of second kind of embodiment of environmental-protective gas-insulating combined electric appliance of the present invention, comprising environmental-protective gas-insulating combined electric appliance 1, closed container 2, high pressure resistant insulation supports 21, EDS three station casket cutter type isolating switches 22, three-phase bus 23, be arranged on and separate, the charged display unit 101 of capacitive on the insulation gap device 91 in following interval, vacuum circuit-breaker 31, EDS operating mechanism 4, circuit breaker operation mechanism 5, advance, outlet cable 6, current transformer CT 7, flexibleness stretching capsule 8 is arranged on the charged display unit 104 of capacitive on the three phase isolated spacer 94 that is connected between outside area, EDS three station casket cutter type isolating switches 22 wherein, vacuum circuit-breaker 31 corresponds respectively to each phase position of three-phase bus, and EDS operating mechanism 4, circuit breaker operation mechanism 5, advance, outlet cable 6 is arranged between the citadel outside 2; Fill the pure air of dry low pressure between above-mentioned citadel, it is above and-40 ℃ below the dew point that its rated pressure and water content are respectively 0.03MPa (Gauge).
EDS three station casket cutter type isolating switches 22 are the movable sides that are connected to vacuum circuit-breaker 31 via insulation gap device 91, and the fixation side of vacuum circuit-breaker 31 connects current transformer 7 earlier, again via insulation gap device 94 be connected between outside area into and out of line cable 6.
Vacuum circuit-breaker 31 keeps the air-tightness of interval closed container 3 down by flexibleness stretching capsule 8 when opening and closing main circuit, and sees through movable electrode in the vacuum circuit-breaker and move forward and backward the conducting of carrying out circuit and cut-off.
Adopt aforesaid technical scheme of the present invention, its effect is as follows:
(1) in containing the closed container of a plurality of derailing switches, fills the pure air of dry low pressure as insulating gas.The pure air of this drying low pressure is different with known sulphur hexafluoride commonly used, because it is harmless fully, therefore can not cause earth environment to worsen.In addition, use this pure air of low pressure of filling air can buy commercially available pure air and get final product, electrical equipment guarantees to keep in good repair, safeguards that convenience improves.
(2) in above-mentioned (1) item, the pure air pressure of dry low pressure is 0～0.1MPa (Gauge), take in the closed container of derailing switch and can avoid suffering intrusions such as outside moisture, dust, and the gas-insulated performance in the closed container can keep stable for a long time.
(3) in above-mentioned (1) item, filling commercially available water content is the following pure air of dry low pressure of-40 ℃ of dew points, can not influence insulation property because of the low temperature dewfall.
(4) in above-mentioned (1) item, do not use known insulation barrier between the charging part, need not recycle the insulation barrier material, have more environmental protection characteristic.
(5) in above-mentioned (1), the high-current on-off of switch combined electrical appliance is carried out under the vacuum environment in vacuum circuit-breaker, does not have the large-current electric arc when cut-offfing and the toxic substance of insulator chemical combination generation, can keep the pure air insulation performance of stabilizing of dry low pressure.
(6) in above-mentioned (1) item, at the three phase isolated spacer in upper and lower interval at interval and be connected on the three phase isolated spacer between outside area the charged display unit of capacitive is installed respectively, by the charged display result of two groups capacitive, but whether the upper and lower interval of interpretation is electrically unusual, and as the signal of upper and lower interval electrical interlocks, this design allows the safety reliability of this equipment promote more.
Adopted above-mentioned environmental-protective gas-insulating combined electric appliance, satisfied aforesaid for the requirement of product specification and in recent years to the requirement of gas insulated combined electrical equipment, innovate the shape and the configuration of charged assembly in the research program design closed container, obtained the environmental-protective gas-insulating combined electric appliance that withstand voltage properties is equal to the air insulation effect of traditional sulfur hexafluoride gas-insulating combined electrical apparatus; Moreover, because the expendable insulation barrier that need use between the live part of the present invention can not cause the epoxy resin of environmental pollution to make, and when electrical equipment is safeguarded or overhaul, pure air in the closed container can directly discharge, and after maintenance is finished, can directly fill commercially available pure air, thereby than safety was convenient more in the past.
In this specification, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (6)
1. environmental-protective gas-insulating combined electric appliance, it is characterized in that, described combined electrical apparatus has several closed containers of filling the pure air of dry low pressure, all accommodate several derailing switches in each closed container, all be connected with the insulation gap device between described closed container and the outside line and between each closed container, and the pure air pressure of described dry low pressure is 0～0.1MPa, and the water content of the pure air of dry low pressure is-40 ℃ below the dew point, and the dry low-pressure air in the described closed container is for directly to fill gained by the pure air of high pressure of steel cylinder splendid attire.
2. environmental-protective gas-insulating combined electric appliance according to claim 1 is characterized in that, described each derailing switch includes live part and grounded part, between this live part and the grounded part and between each live part insulation barrier is not set.
3. environmental-protective gas-insulating combined electric appliance according to claim 1 is characterized in that, described derailing switch is main circuit switch or isolates the ground connection three-station.
4. environmental-protective gas-insulating combined electric appliance according to claim 3 is characterized in that, described main circuit switch is a vacuum circuit-breaker.
5. environmental-protective gas-insulating combined electric appliance according to claim 3 is characterized in that, described isolation ground connection three-station is a casket cutter type contact-making switch.
6. environmental-protective gas-insulating combined electric appliance according to claim 1 is characterized in that, described insulation gap device is the three phase isolated spacer, and is provided with the charged display unit of capacitive on each three phase isolated spacer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100847028A CN101075729B (en) | 2006-05-17 | 2006-05-17 | Environmental-protective gas-insulating combined electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100847028A CN101075729B (en) | 2006-05-17 | 2006-05-17 | Environmental-protective gas-insulating combined electric appliance |
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| Publication Number | Publication Date |
|---|---|
| CN101075729A CN101075729A (en) | 2007-11-21 |
| CN101075729B true CN101075729B (en) | 2010-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006100847028A Expired - Fee Related CN101075729B (en) | 2006-05-17 | 2006-05-17 | Environmental-protective gas-insulating combined electric appliance |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101854036B (en) * | 2009-03-31 | 2012-06-06 | 青岛特锐德电气股份有限公司 | Air switch cabinet |
| CN101888063A (en) * | 2010-07-07 | 2010-11-17 | 句容华源电器设备有限公司 | Vacuum isolating switch combined electrical apparatus |
| CN102315605B (en) * | 2011-05-13 | 2014-09-10 | 常州森隆电力科技有限公司 | Special equipment of positive-pressure full-sealed solid insulated switch |
| CN102360987B (en) * | 2011-10-25 | 2014-03-26 | 沈阳华德海泰电器有限公司 | Tank type high-pressure vacuum circuit breaker |
| CN103001138A (en) * | 2012-06-11 | 2013-03-27 | 苏州朗格电气有限公司 | Gas-insulated closed metal switch cabinet convenient to radiate heat |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354358A (en) * | 2000-11-21 | 2002-06-19 | 艾特华技术有限公司 | Control of absolute storage capacity by means of measurement of radial force |
| CN1667895A (en) * | 2004-03-12 | 2005-09-14 | 三菱电机株式会社 | Gas insulation switch device |
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2006
- 2006-05-17 CN CN2006100847028A patent/CN101075729B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354358A (en) * | 2000-11-21 | 2002-06-19 | 艾特华技术有限公司 | Control of absolute storage capacity by means of measurement of radial force |
| CN1667895A (en) * | 2004-03-12 | 2005-09-14 | 三菱电机株式会社 | Gas insulation switch device |
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| CN101075729A (en) | 2007-11-21 |
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Granted publication date: 20100630 Termination date: 20170517 |
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