CN101001006A - Gas insulated electric equipment - Google Patents
Gas insulated electric equipment Download PDFInfo
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- CN101001006A CN101001006A CN 200710001562 CN200710001562A CN101001006A CN 101001006 A CN101001006 A CN 101001006A CN 200710001562 CN200710001562 CN 200710001562 CN 200710001562 A CN200710001562 A CN 200710001562A CN 101001006 A CN101001006 A CN 101001006A
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Abstract
The invention provides an efficient gas insulated electrical machinery, capable of preventing the insulativity of the insulated electrical machinery from being aggravated by using gases containing CF3I as an insulated gas having small warmer coefficient. The device includes: a sealing container for enclosing an insulated gas; a vacuum circuit breaker and cutter, which are mounted in the sealing container and are electrical-insulated with the sealing container, characterized in that, the vacuum circuit breaker is able to prevent the arc light from leaking out the vaccum container when the current is turned off, the insulated gas is a mixed gas comprising CF3I having volumetric ratio of over 40% and the other insulated gas having lower condensing temperature than CF3I and smaller earth warmered coefficient than SF6, the air pressure of the mixed gas is 0.1-0.3 MPa.abs, moreover, there is provided with an adsorbent, which can adsorb a low-molecular-weight compound produced by the dissociation of CF3I.
Description
Technical field
The present invention relates to be used for the gas isolated gas insulated electric apparatus of use electric insulation of transformer station or switching station, particularly be suitable for considering to the influence of global warming and the gas-insulated switchgear device that suppresses to warm.
Background technology
For gas insulation opening and closing arrangement, use SF as the insulating gas of enclosing in its closed container at transformer station or switching station
6Gas.This insulating gas is chemically stable, and toxicity is extremely low, and electrical insulation capability and arc performance are good.
Yet, though SF
6Gas is the good gas of not relevant with the destruction of ozone layer or toxicity etc. problem, but unique global warming coefficient CO more greatly
223900 times shortcoming become problem on the environment, the problem from environment considers that in recent years, instead its insulating gas uses and comprises CF3I (CF
3I) gas (reference example such as patent documentation 1: the spy opens the 2000-166033 communique).
Above-mentioned CF
3The I boiling point is-22.5 ℃, at room temperature is gas, and dielectric strength compares SF
6Also high, the global warming coefficient is very little, so if with this CF
3The mist of I and other insulating gass is (hereinafter referred to as containing CF
3The mist of I) is used for gas insulated electric apparatus as insulating gas, then can provides electrical insulating property good and can suppress gas insulated electric apparatus the influence of global warming.
For above-mentioned gas, clearly promptly had above-mentioned advantage, following shortcoming is arranged again on the other hand.That is, in having the closed container of switch, enclose the occasion of above-mentioned gas, since the light and heat of the electric arc that when the switch motion of switch, produces, CF
3I molecular breakdown and generate iodine gas and fluorine gas, the perhaps reaction of the micro-moisture in this iodine gas and fluorine gas and the closed container and generate hydrogen iodide gas and hydrogen fluoride gas.
If this iodine gas, fluorine gas, hydrogen iodide gas or hydrogen fluoride gas are present in the closed container with switch, then attached on the inner face of closed container and the moving contact and fixed contact in the closed container.The chemical property of this iodine and fluorine and chlorine, bromine are similar, have and they similar chemical actions.Have following defective as mentioned above, promptly particularly attached on moving contact in the closed container and the fixed contact time, moving contact and fixed contact corrosion, thus reduce the energising performance.
Summary of the invention
The present invention is based on above-mentioned situation and finish, its purpose is to provide a kind of increase that can suppress the earth environment load, and can not make the gas insulated electric apparatus of energising mis-behave.
The invention provides a kind of gas insulated electric apparatus, possess: the closed container of enclosing insulating gas; And be arranged on vacuum circuit-breaker and cutter in this closed container with state with above-mentioned closed container electric insulation, arc light when above-mentioned vacuum circuit-breaker is current interruption can not leak into the outer Sun-shading type of vacuum tank, and above-mentioned insulating gas is to be CF more than 40% by volumetric ratio
3I and condensing temperature are than this CF
3The also low and global warming coefficient ratio SF of I
6The mist that other also little insulating gass constitute, the air pressure of this mist is 0.1～0.3MPaabs.
Have, the invention provides a kind of gas insulated electric apparatus, it is characterized in that possessing: above-mentioned closed container, it is enclosed by CF
3The insulating gas that the mist of I and other insulating gass forms; And adsorbent equipment, it is located in the above-mentioned closed container, and has and optionally adsorb by the decomposition of above-mentioned insulating gas and/or the reaction in the closed container and the adsorbent of the low-molecular-weight gas that produces.
The present invention has following effect.
According to the present invention, can provide a kind of CF that prevents to use as the little insulating gas of coefficient that warms
3The efficient apparatus that the insulating properties of the gas insulated electric apparatus of I worsens.
Description of drawings
Fig. 1 is the partial sectional view of the gas-insulated switchgear device of one embodiment of the present invention.
Fig. 2 is the partial sectional view of the gas-insulated switchgear device of other execution modes of the present invention.
Fig. 3 is the vertical profile end view of expression as an execution mode of the combined gas-insulated switchgear device of the gas insulated electric apparatus of embodiments of the present invention.
Fig. 4 is a front view of representing to be arranged at the adsorbent equipment on the execution mode of gas-insulated switchgear device of the present invention shown in Figure 3 with part section.
Fig. 5 is the vertical view of adsorbent equipment shown in Figure 4.
Fig. 6 is the vertical profile end view of expression as other execution modes of the combined gas-insulated switchgear device of the gas insulated electric apparatus of other execution modes of the present invention.
Fig. 7 is the end view of other embodiment of expression adsorbent equipment.
Fig. 8 is the vertical view of the adsorbent equipment of Fig. 7.
Among the figure:
The 1-bus; The 2-circuit breaker; 3-line side cable; 4-bus bar side cutter; 5-line side cutter; The 22-vacuum circuit-breaker; The 100-adsorbent equipment; The 101-adsorbent; The 102-bag; The 200-moisture absorption apparatus; The 300-adsorbent equipment.
Embodiment
Below comprehensive explanation preferred forms of the present invention.
(1) a kind of gas insulated electric apparatus possesses: the closed container of enclosing insulating gas; And be arranged on vacuum circuit-breaker and cutter in this closed container with state with above-mentioned closed container electric insulation, arc light when above-mentioned vacuum circuit-breaker is current interruption can not leak into the outer Sun-shading type of vacuum tank, and above-mentioned insulating gas is by the CF of volumetric ratio more than 40%
3I and condensing temperature are than this CF
3The also low and global warming coefficient ratio SF of I
6The mist that other also little insulating gass constitute, the air pressure of this mist is 0.1～0.3MPaabs.Other insulating gass preferably boiling point compare CF
3I is also low, and has electrical insulating property, is not concretive or low coagulation, compares CF
3The also not labile gas of I.Example as it has air, nitrogen, carbon dioxide, is preferably nitrogen especially.
(2) in the above-mentioned gas insulation electrical equipment, it is 40～70% above-mentioned CF that above-mentioned mist comprises volumetric ratio
3I, remainder are other insulating gass.If CF
3I is less than 40%, and then insulating properties is insufficient, if surpass 70%, then might coagulability become problem.
(3) in the above-mentioned gas insulation electrical equipment, above-mentioned other insulating gass are the gas of selecting from air, carbon dioxide and nitrogen more than a kind.Preferably these are by high dry.
(4) in the above-mentioned gas insulation electrical equipment, above-mentioned other insulating gass are nitrogen, CF
3The volume ratio of I is 40～70%, and other insulating gass are remainder.
(5) in the above-mentioned gas insulation electrical equipment, possess a plurality of closed containers of cutting apart the above-mentioned gas seal, make to be connected to become and dispose each closed container possibly, the CF of the insulating gas in each closed container in the mode that constitutes gas insulated electric apparatus
3The mixing ratio of I and other insulating gass is different.Thus, can realize being suitable for the gas-insulated of the service condition of each switch.
(6) in the above-mentioned gas insulation electrical equipment, the air pressure difference of the insulating gas of above-mentioned each closed container is designed to be suitable for the air pressure of each switch.Thus, can realize being suitable for the gas-insulated of the service condition of each switch.
(7) in gas insulated electric apparatus, possess: above-mentioned closed container, in above-mentioned closed container, enclose CF
3The mist of I and other insulating gass; And adsorbent, it is located in the above-mentioned closed container, and optionally adsorbs gas that is produced by the decomposition of above-mentioned insulating gas and/or the low-molecular-weight gas that produces by reaction in closed container.Adsorbent preferably optionally adsorbs the adsorbent that is present in the low molecular weight substance in the closed container.
(8) in the above-mentioned gas insulation electrical equipment, above-mentioned decomposition gas and/or the low-molecular-weight gas that produces by reaction in closed container comprise a kind of in iodine gas, fluorine gas, hydrogen iodide gas, the hydrogen fluoride gas at least.
(9) in the gas insulated electric apparatus of above-mentioned (1)～(6), above-mentioned adsorbent is an activated carbon.
(10) in the gas insulated electric apparatus of above-mentioned (1)～(9), a kind of moisture adsorbent of adsorbing the moisture in the above-mentioned closed container is set at least in above-mentioned closed container.
(11) in the gas insulated electric apparatus of above-mentioned (1)～(9), above-mentioned adsorbent equipment comprises: adsorbent; The bag that holds this adsorbent; And keep this bag, and be located at the container in the above-mentioned closed container.
(12) in the gas insulated electric apparatus of above-mentioned (1)～(9), above-mentioned circuit breaker is configured in to enclose as vacuum circuit-breaker and contains CF
3In the above-mentioned closed container of the insulating gas that the I mist forms, above-mentioned cutter and earthing device are configured in respectively to enclose and contain CF
3In the above-mentioned closed container of the insulating gas that the I mist forms, in each closed container of above-mentioned cutter and earthing device adsorbent is set, this adsorbents adsorb is by CF
3Reaction in the decomposition of I and/or the above-mentioned closed container and the low-molecular-weight gas that generates.
(13) in the gas insulated electric apparatus of above-mentioned (1)～(9), in accommodating the closed container of above-mentioned circuit breaker adsorbent is set, this adsorbent optionally adsorbs the CF by above-mentioned mist
3Reaction in the decomposition of I and/or the closed container and the low-molecular-weight gas that generates is provided with adsorbent equipment in the closed container of cutter and earthing device.
(14) in the above-mentioned gas insulation electrical equipment, the adsorbent of the micro-moisture in the absorption closed container is set in each closed container of above-mentioned circuit breaker, cutter and earthing device.
(15) in the above-mentioned gas insulated electric apparatus that possesses adsorbent, above-mentioned insulating gas is to be CF more than 40% by volumetric ratio
3I and condensing temperature are than this CF
3The also low and global warming coefficient ratio SF of I
6The mist that other also little insulating gass constitute, the air pressure of this mist is 0.1～0.3MPaabs.
(16) in the above-mentioned gas insulated electric apparatus that possesses adsorbent, it is 40～70% above-mentioned CF that above-mentioned mist comprises volumetric ratio
3I, remainder are other insulating gass.
(17) in the above-mentioned gas insulated electric apparatus that possesses adsorbent, above-mentioned other insulating gass are the gas of selecting from dry air, carbon dioxide and nitrogen more than a kind.
(18) in the above-mentioned gas insulated electric apparatus that possesses adsorbent, possess adsorbent at least one above-mentioned closed container, this adsorbent optionally adsorbs gas that is produced by the decomposition of above-mentioned insulating gas and/or the low-molecular-weight gas that produces by reaction in closed container.
(19) in the above-mentioned gas insulated electric apparatus that possesses adsorbent, above-mentioned decomposition gas and/or the low-molecular-weight gas that produces by reaction in closed container comprise a kind of of iodine gas, fluorine gas, hydrogen iodide gas, hydrogen fluoride gas at least.
(20) in the above-mentioned gas insulated electric apparatus that possesses adsorbent, above-mentioned adsorbent is an activated carbon.
(21) in the above-mentioned gas insulated electric apparatus that possesses adsorbent, the moisture adsorbent of the moisture in the above-mentioned closed container of absorption is set in above-mentioned closed container.
(22) in the above-mentioned gas insulated electric apparatus that possesses adsorbent, above-mentioned adsorbent comprises: adsorbent; The bag that holds this adsorbent; And keep this bag, and be located at the container in the above-mentioned closed container.
With CF
3Other insulating gass that I mixes use the coefficient ratio SF that warms
6Also little, boiling point compares CF
3I is also low, and has insulating properties, is the gas of low coagulation or not concretive, for example air, nitrogen, carbon dioxide etc. as far as possible.These need to use after high dry or dehumidifying.
According to the present invention, a kind of gas insulated electric apparatus is provided, contain CF by using as insulating gas
3The I mist, the global warming coefficient diminishes, and arc performance and electrical insulation capability are good, and optionally absorption is removed by CF
3I gas or contain CF
3At least a in I decomposing gas and the iodine gas that produces, fluorine gas, hydrogen iodide gas, the hydrogen fluoride gas, again just like needs, then moisture is removed in absorption, thus it is functional to switch on.
Below, the execution mode of use description of drawings gas insulated electric apparatus of the present invention.
Fig. 1 is the partial sectional view of the gas-insulated switchgear device of expression one embodiment of the present invention.
As the gas-insulated switchgear device that constitutes towards being subjected to electric unit of primary demand person, in each gas zones, in the closed container of filling insulating gas, utilize insulation stent to support high-pressure conductor with state with the closed container electric insulation, for example configuration vacuum circuit-breaker 2 in first closed container 1 will utilize cablehead 5 insulation to be drawn out to first closed container 1 by the high-pressure conductor 4 that cutter 3 is connected with an end of this vacuum circuit-breaker 2 and be connected with cable 6 outward.And in first closed container 1, also be arranged on the earthed switch 7 of when maintenance high-pressure conductor ground connection that it is inner.First closed container, the 1 interior high-pressure conductor that constitutes these vacuum circuit-breakers 2, cutter 3 and earthed switch 7 etc. utilizes insulation stent 8 to support its appropriate location with the state with first closed container, 1 electric insulation.
The other end of vacuum circuit-breaker 2 be incorporated into and first closed container 1 between insulator spacer 10 is set and in second closed container 9 on gas, divided, and be connected with an end of bus bar side cutter 11, the other end of bus bar side cutter 11 is connected with the main bus bar side that second closed container 9 is divided on gas with utilizing insulator spacer 13 by conductor 12.In bus bar side cutter 11, the high-pressure conductor in second closed container 9 also utilizes insulation stent 14 to support its appropriate location with the state with second closed container, 9 electric insulations.The movable contact side of the movable electrode side of vacuum circuit-breaker 2, cutter 3, also have the movable grounding contact side of earthed switch 7, again the movable contact side of bus bar side cutter 11 arranged, keep the airtight of first closed container 1 and second closed container 9 respectively and draw by omitting illustrated linkage, link with each operator that is configured in the operation board 15.
The opaque pottery of vacuum circuit-breaker 2 usefulness that is configured in first closed container 1 is made vacuum tank, portion disposes fixed electrode and movable electrode within it, have when the switch motion of movable electrode the vacuum degree that keeps vacuum tank and allow movable electrode action bellows and constitute, make vacuum tank also by shielding or cover the vacuum circuit-breaker 2 that can not make arc light leak into the outer Sun-shading type of vacuum tank even if perhaps use with transparent ceramic or glass.The above-mentioned gas insulated switch is the Threephase common-box that disposes three-phase together.
Be filled with mix insulation gas respectively in first closed container 1 and second closed container 9, the mix insulation gas in each gas zones is that the mixing volumetric ratio is 65% CF all
3I and global warming coefficient ratio SF
6Also little and condensing temperature compares CF
3The mist of 35% the nitrogen that I is also low, air pressure is 0.17MPaabs.
As previously mentioned, with SF
6Gas is compared, CF
3The dielectric strength of I under air pressure 0.1MPaabs is SF
6About about 1.1～1.3 times of gas.Use SF
6The present specified air pressure of the gas-insulated switchgear device of gas is general about to be more than the 0.2MPaabs, for example uses the SF of 0.17MPaabs relatively as dielectric
6The gas-insulated switchgear device of gas will use CF
3I makes equal dielectric strength, if hypothesis CF
3The dielectric strength of I is SF
6About 1.1 times of gas then need specified air pressure is set at more than the 0.15MPaabs.
But, under the pressure of 0.15MPaabs, CF
3The condensing temperature of I is approximately about-10 ℃, so can not use under for-20 ℃ at the specifications parameter of the general ambient temperature of gas-insulated switchgear device, the scope of application is restricted.Therefore, for the restriction that the specifications parameter that solves-20 ℃ brings, can use global warming coefficient ratio SF by mixing
6Also little and condensing temperature compares CF
3Insulating gas that I is also low and CF
3I comes corresponding.For example, research with present SF
6The specified air pressure of air pressure same degree is can be in ambient temperature for-20 ℃ of mixing ratios that liquefy down, at CF under the 0.17MPaabs
3During the mist of I and nitrogen, if make with volumetric ratio CF
3I is 65%, nitrogen is 35% mixing ratio, and then condensing temperature is approximately-20 ℃, and uses SF
6The present product comparison dielectric strength of gas improves about several percentage points.
In addition specified air pressure is set at 0.17MPaabs, with SF
6The air pressure of gas is identical, if will obtain identical insulation property, for example can use also that to mix volumetric ratio be 50% CF
3The mist of I and 50% nitrogen.Have again, under the occasion that condensing temperature is made as the cold zone special requirement parameter corresponding with-30 ℃, can be in order to volumetric ratio CF
3I is 40%, nitrogen is that about 60% mist comes corresponding.Thereby, if use CF at least
3I is more than 40% with volumetric ratio and mixes global warming coefficient ratio SF therein
6Little and condensing temperature compares CF
3The mist of other insulating gass that I is also low then can fully satisfy the present specifications parameter of gas-insulated switchgear device.
Like this owing to, used CF as the insulating gas that is sealing in the closed container 1 that disposes vacuum circuit-breaker 2
3I is than this CF more than 40% and as condensing temperature with volumetric ratio
3The also low and global warming coefficient ratio SF of I
6Also little insulating gas is sneaked into for example mist of nitrogen, thus with use SF as insulating gas
6Occasion relatively, can in the insulation property more than keeping on an equal basis, reduce condensing temperature and make the equipment that is fit to the JEC specification, and can obtain a kind of and existing occasion of mist of not using and compare, do not need to improve significantly gas pressure, and use influences the little insulating gas and the gas-insulated switchgear device of Miniaturizable to global warming.
The performance that can not need like this to improve the closed container 1 interior air pressure of configuration circuit breaker significantly and satisfy regulation, so if for example specified air pressure is made as with product is much the same at present, then the vacuum-tightness of vacuum circuit-breaker 2, mechanical strength also get final product on an equal basis with existing design product, therefore in the gas-insulated switchgear device of delivered product, if replace insulating gas SF
6And air pressure is made as 0.17M, use CF simultaneously
3The mist of I and nitrogen then can be realized the gas-insulated switchgear device little to the influence of global warming easily.
On the other hand, CF
3The dielectric strength of the mist of I and nitrogen is than also high several percentage points of existing product, so in the occasion of making as new gas-insulated switchgear device, can realize relatively being the product of miniaturization with existing product, and the condensing temperature of insulating gas can satisfy the general specifications parameter of gas-insulated switchgear device for being approximately-20 ℃.
As mentioned above, for CF
3I uses up easy decomposition, is called as that the life-span is below 1 day in atmosphere, just in case leak into the outside from first closed container 1 or second closed container 9, also can bring bad influence to natural environment hardly.And, owing in gas-insulated switchgear device, constitute the closed container of filling insulating gas with opaque metal, and so under normal circumstances, the CF in the closed container
3I can not be subjected to daylight and decompose, and can keep stable insulation property.Yet, if research is with CF
3I is used for gas-insulated switchgear device, then can think because vacuum circuit-breaker 2 disconnects the fault current of tens of kA, so CF
3The arc light of I during by this current interruption decomposes.Therefore, make the vacuum tank that is configured in the vacuum circuit-breaker 2 in first closed container 1, within it portion's configuration fixed electrode and movable electrode with opaque pottery.Keep the vacuum degree in the vacuum tank when being formed in the switch motion of movable electrode and allow the bellows of the action of movable electrode with lighttight material, and constitute the outside that arc light can not leak into vacuum circuit-breaker, even then utilize transparent ceramic or glass to make vacuum tank, arc light can not leak into outside the vacuum tank yet.As above constitute the vacuum circuit-breaker of Sun-shading type.
If use like this vacuum circuit-breaker of Sun-shading type to constitute gas-insulated switchgear device, produce electric arc though then can make when current interruption in the vacuum tank of the vacuum circuit-breaker 2 of Sun-shading type, this arc light can not decompose the CF in first closed container 1
3I, thereby gas-insulated switchgear device with stable insulation property.
Under the occasion of civilian gas-insulated switchgear device, the electric current by the residual charge generation with about 11 disconnections of bus bar side cutter 0.2A needs hardly to consider that arc light is to CF
3The decomposition of I.Yet, with in the gas-insulated switchgear device, for example when disconnecting the loop current of 1200A, need to consider that arc light is to CF when disconnecting this loop current with bus bar side cutter 11 at the electric power of high-voltage large-capacity more
3The decomposition of I.
Under this occasion, also can constitute the gas-insulated switchgear device of execution mode shown in Figure 2.With before execution mode be same Reference numeral of mark and detailed on the coordinate, use vacuum cutter 3a as cutter 3, use vacuum cutter 11a as bus bar side cutter 11, use vacuum earthed switch 7a as earthed switch 7 as required.As their each vacuum switch, make vacuum tank with opaque pottery.And portion's configuration fixed electrode and movable electrode have the bellows that keeps the vacuum degree in the vacuum tank and allow the action of movable electrode when the switch motion of movable electrode within it.If bellows is not make light transmissive material, then vacuum tank also can be made of transparent ceramic or glass.As vacuum cutter or vacuum earthed switch, can from known vacuum circuit-breaker or vacuum switch, select the use device corresponding with working voltage and breaking current.
Gas-insulated switchgear device according to this structure, even when current interruption in the vacuum tank of the vacuum circuit-breaker 2 of Sun-shading type, also have in the vacuum tank of other cutters 3,11 electric arc take place, as each Sun-shading type, arc light can not leak in first closed container 1, so can not decompose the CF in first closed container 1
3I, thus gas-insulated switchgear device can be made with stable insulation property.
Fig. 3 is the partial sectional view of the gas-insulated switchgear device of expression other execution modes of the present invention.
The higher electric power gas-insulated switchgear device of domestic gas insulated switch, electric pressure of the execution mode before the expression relatively, in first closed container 80, dispose vacuum circuit-breaker 22, support this vacuum circuit-breaker 22 with state with first closed container, 80 electric insulations by appropriate insulation supporter 81.On first closed container 80, be formed with pair of openings portion up and down, link second closed container 40 by insulator spacer 41 on the peristome at an upper portion thereof.In this second closed container 40, constitute with also lean on than the vacuum circuit-breaker in first closed container 22 above the bus bar side cutter 404 that is electrically connected of terminals side.Have again, on second closed container 40, link the 3rd closed container 210, in the 3rd closed container 210, dispose main bus conductor 211 by insulator spacer 213.
Linking by insulator spacer 50 on the peristome of the bottom of first closed container 80 has the 4th closed container 52, the 4th closed container 52 in, dispose with also lean on than the vacuum circuit-breaker 22 in first closed container 80 below the cutter 505 that is electrically connected of terminals side and the earthed switch 56 of the high-pressure conductor ground connection that will form major loop.Utilizing cablehead 30 insulation to be drawn out to outside the 4th closed container 52 is connected with cable 303.The movable contact side of the movable electrode side of vacuum circuit-breaker 22, cutter 505, also have the movable grounding contact side of earthed switch 56, again the movable contact side of bus bar side cutter 404 arranged, keep the airtight of first closed container 80, second closed container 44 and the 4th closed container 52 respectively and draw by omitting illustrated linkage, link with each operator that is configured in the operation board 208.
Be configured in the vacuum tank of the vacuum circuit-breaker 22 in first closed container 80 and the occasion of execution mode before and make with opaque pottery equally, within it portion's configuration fixed electrode and movable electrode.In addition, when the switch motion of using at movable electrode, keep the vacuum degree in the vacuum tank and allow the occasion of bellows of not transmitted light of the action of movable electrode, also can shield or cover even utilize transparent ceramic or glass to make vacuum tank, make arc light can not leak into outside the vacuum tank.Constitute the vacuum circuit-breaker 22 of Sun-shading type by these methods.According to this structure, when current interruption, in the vacuum tank of the vacuum circuit-breaker 22 of Sun-shading type, produce electric arc, but this arc light can not decompose the CF in first closed container 80
3I can make the gas-insulated switchgear device with stable insulation property.
In the gas-insulated switchgear device of present embodiment, for when keeping condensing temperature to be-20 ℃, keep the insulation property in each closed container, its mix insulation gas is studied.That is, having in first closed container 80 of vacuum circuit-breaker 22 is with volumetric ratio CF
3I is 65%, global warming coefficient ratio SF
6The also little and condensing temperature of gas compares CF
3The nitrogen that I is also low is 35% mist, and its air pressure is set at 0.17MPaabs, and having in the second, the 4th closed container 44,52 of cutter in addition is with volumetric ratio CF
3I is 65%, nitrogen is 35% mist, and its air pressure is set at 0.15MPaabs, and having in the 3rd closed container 210 is with volumetric ratio CF again
3I is 70%, nitrogen is 30% mist, and its air pressure is set at 0.15MPaabs.
Change mist air pressure when by the closed container of each being accommodated each switching device like this, the specifications parameter that just can keep condensing temperature is-20 ℃ and satisfies each extinguishing arc and insulation property, vessel strength that can each closed container of optimal design.
In the respective embodiments described above, as the insulating gas of in first closed container of the vacuum circuit-breaker 22 that disposes Sun-shading type, filling, use with volumetric ratio CF
3I is 65%, nitrogen is 35% mist.Its air pressure is 0.17MPaabs, but and CF
3The gas that I mixes is not limited to nitrogen, also can use to have equal insulation property and global warming coefficient ratio SF
6The also little and condensing temperature of gas compares CF
3The CO that I is also low
2Wait other insulating gass, perhaps use nitrogen and their mist.Therefore, if in order to volumetric ratio CF
3I is the mist more than 40%, and its air pressure is set at 0.1～0.3MPaabs, then compares with the situation of not using mist, can not need to improve air pressure and reach roughly same effect than the highland.
And, be the gas-insulated switchgear device of the immediate delivery product of the lower specified air pressure about 0.2MPaabs for specified air pressure, if in order to volumetric ratio CF
3I is 40～65% mist, its air pressure is set at 0.1～0.3MPaabs, then only need the replacement insulating gas just can make and have the roughly gas-insulated switchgear device of equal performance, can obtain easily the little gas-insulated switchgear device of global warming influence.
In Fig. 3, on gas-insulated switchgear device base 201, possess bus 301, circuit breaker 22, line side cable 303, bus bar side cutter 404, line side cutter 505, the breaker operator case 207 that holds breaker operator device 606 and gas watch box 208.
Toe lateral at gas-insulated switchgear device base 201 is fixed with gas watch box 208.On this gas watch box 208, be fixed with the breaker operator case 207 that holds breaker operator device 606.On the gas-insulated switchgear device base 201 of the rear side of this breaker operator case 207, utilize stand 220 to be provided with circuit breaker 22.One side's side (upside in Fig. 3) of this circuit breaker 22 is connected with bus 301 by bus bar side cutter 404.The opposing party's side (downside in Fig. 3) at circuit breaker 22 is connected with line side cable 303 by line side cutter 505.
Above-mentioned bus 301 possesses: bus container 210; The three-phase bus conductor 211 that in this bus container 210, disposes along right angle orientation on the paper of Fig. 3; And the branch bar 212 of distinguishing branch from these bus-bars conductors 211 left-hand on the paper of Fig. 1.This bus container 210 is fixed on the bus bar side cutter container 40 of bus bar side cutter 404 by insulator spacer 213.
The bus bar side cutter container 40 of bus bar side cutter 404 is fixed on the circuit breaker container 80 of circuit breaker 22 by the insulator spacer 41 that is used to keep airtight.Possess the fixed electrode 42 that is connected with above-mentioned branch bar 212 in bus bar side cutter container 40 inside and be connected the movable electrode 43 that separates with this fixed electrode 42.Fixed electrode 42 and movable electrode 43 are set up in parallel 3 along right angle orientation on the paper of Fig. 3 in bus bar side cutter container 40.
Above-mentioned circuit breaker 22 possesses: be fixed on the circuit breaker container 80 on the stand 220; And the vacuum circuit-breaker 22 that in this circuit breaker container 80, is set up in parallel 3 along right angle orientation on the paper of Fig. 3 at above-below direction.This vacuum circuit-breaker 22 possesses: be the vacuum circuit-breaker container 23 of vacuum state with inner sustain; Be located at the fixed electrode 24 in this vacuum circuit-breaker container 23; And be connected the movable electrode 25 that separates with this fixed electrode 24.Be connected with movable electrode 43 sides of bus bar side cutter 404 on the fixed electrode 24 in vacuum circuit-breaker container 23.Movable electrode 25 in the vacuum circuit-breaker container 23 is connected on the line side cutter 505.By this vacuum circuit-breaker 22 of breaker operator device 606 switching manipulations that is contained in the breaker operator case 207.
Above-mentioned bus container 210, circuit breaker container 80, bus bar side cutter container 40 and the airtight regional space of line side cutter container 52 its inner formation, inclosure has CF as insulating gas in these regional spaces
3I gas or contain CF
3I gas.This CF
3I gas or contain CF
3I gas electrical insulating property is good, and has the function that suppresses global warming.In addition, in order to suppress CF
3The liquefaction of I, good and boiling point compares CF as mist mixing electrical insulating property
3The incompressible air that I is also low or the carbon dioxide of nitrogen or low compressibility etc.
In above-mentioned bus container 210, circuit breaker container 80, bus bar side cutter container 40 and line side cutter container 52, particularly in bus bar side cutter container 40 and the line side cutter container 52, the switch portion that is respectively equipped with the switch portion that constitutes by fixed electrode 42 and movable electrode 43, constitutes by movable electrode 53 and fixed electrode 54, and in line side cutter container 52, be provided with earthing device 56.The CF of these switch portion in each closed container
3In the gas medium of I gas and mist, when separating, the connection of electrode produces electric arc.In closed container owing to contain CF
3I gas, this electric arc produces CF
3The decomposition gas of I is in order to adsorb this decomposition gas (iodine gas I
2, fluorine gas F
2) and hydrogen iodide gas, hydrogen fluoride gas, the micro-moisture that may in closed container, generate, on bus bar side cutter container 40 and line side cutter container 52, be respectively equipped with adsorbent equipment 100.
In this embodiment, about the relation in space is set, is located at adsorbent equipments 100 in the bus bar side cutter container 40 and is fixed on the inner face of lid 44 of bus bar side cutter container 40.In addition, about the relation in space is set, the adsorbent equipment 100 that is located in the line side cutter container 52 is positioned on the bottom surface of line side cutter container 52.
Fig. 4 and shown in Figure 5 for example, above-mentioned adsorbent equipment 100 comprises: adsorbent 101 such as activated carbon for example; The bag 102 that holds the gas permeability of this adsorbent 101; And be fixed on the container that the cylinder 104 on this base 103 constitutes by the base 103 that keeps this bag 102 with welding etc.The bag 102 that holds the gas permeability of adsorbent 101 is housed in by base 103 with welding etc. and is fixed in the space that the cylinder 104 on this base 103 forms.Adsorbent 101 in the bag 102 is communicated with by being located in air-vent 105 and each closed container on bag 102 and the cylinder 104.
In addition, the bolt hole 106 that will be used for fixing at the inner face of lid 44 is arranged on the base 103, but in the occasion of above-mentioned adsorbent equipment 100 mountings in closed container, can omit this bolt hole 106.
Then, action as an execution mode of the combined gas-insulated switchgear device of the gas insulated electric apparatus of the invention described above is described.
Occasion in line side cable 303 side generation overcurrent; the above-mentioned gas insulated switch disconnects vacuum circuit-breaker 22; prevent that overcurrent is delivered on the bus 301; and when the Maintenance and Repair of gas-insulated switchgear device; vacuum circuit-breaker 22 in the cut-off breaker container 80; open bus bar side cutter 404, the line side cutter 505 that is provided with in addition with this circuit breaker 22; and make earthing device 56 ground connection; thereby the residual charge of mains side, induced current ground connection are flow through; prevent from the applying again of mains side protection operating personnel's safety.
When the Maintenance and Repair of above-mentioned gas insulated switch, the fixed electrode 42 of bus bar side cutter 404 and movable electrode 43, also have line side cutter 505 fixed electrode 54 with movable electrode 53, have earthing device 56 to be connected separating action respectively again, in each closed container 40,52, contain CF
3Produce electric arc in the gas medium of I gas.
Generation for this electric arc contains CF
3I gas performance arc performance and electrical insulation capability.On the other hand, for containing CF
3I gas is because the energy of above-mentioned electric arc is containing CF
3CF in the I gas
3I generates iodine gas, fluorine gas as decomposition gas.
The iodine gas of this decomposition, fluorine gas are attracted on the adsorbent 101 of adsorbent equipment 100.Its result can be with the CF that contains in each closed container 40,52
3The I gas medium is maintained the pure state of the material that does not have corrosive material or insulating properties deficiency, so can keep arc performance and electrical insulation capability in bus bar side cutter 404, the line side cutter 505.
In addition, can suppress to keep so can not reduce the energising performance of regulation on iodine gas or fluorine gas the fixed electrode 54 and movable electrode 53 attached to the fixed electrode 42 of bus bar side cutter 404 and movable electrode 43 and line side cutter 505.Have again, can suppress decomposition gas (iodine gas, fluorine gas),, can prolong the life-span of equipment so also can suppress the corrosion of the inner face of each closed container 40,52 to the adhering to of the inner face of each closed container 40,52.
The iodine gas that might generate in addition,, fluorine gas by decomposition further with closed container in micro-moisture reaction and generate hydrogen iodide gas or hydrogen fluoride gas.These gases and iodine gas or fluorine gas equally also have severe corrosive, so the component parts of corroding electrode sometimes.But utilize adsorbent equipment absorption to remove them, just do not have this problem.
As mentioned above, according to an embodiment of the present invention, by using the CF that contains as insulating gas
3I gas can provide that a kind of global warming coefficient is little, arc performance and electrical insulation capability be good, and by to containing CF
3The absorption of the decomposition gas of I mist and the also good gas-insulated switchgear device of performance of switching on.In addition, can provide a kind of and existing use SF
6The gas-insulated switchgear device of equal or its following size of the occasion of insulating gas.
Fig. 6 is the vertical profile end view of expression as other execution modes of the combined gas-insulated switchgear device of gas insulated electric apparatus of the present invention.In this Fig. 6, the parts of the Reference numeral identical with Fig. 3～Fig. 5 are with a part, so omit its detailed description.
This execution mode is the device that can also adsorb the moisture in the closed container, moisture absorption apparatus 200 with hygroscopic agents such as silica gel, zeolites is set in the circuit breaker container 80 of circuit breaker 22, the adsorbent equipment 300 of adsorbents such as hygroscopic agents such as possessing silica gel, zeolite and activated carbon is set in bus bar side cutter container 40 and in the line side cutter container 52.
In Fig. 7 and Fig. 8, utilize next door 307 to be divided into two parts in the cylinder 304 of formation adsorbent equipment 300, form Room 2.Be provided with the bag 301 of enclosing hygroscopic agent in this side indoor, be provided with the bag 102 of enclosing above-mentioned Fig. 4 and iodine adsorbent 101 shown in Figure 5 in the opposing party indoor.And, in the occasion that the particle diameter of hygroscopic agent and iodine adsorbent differs widely, be contained in respectively and more can enlarge adsorption area in the different containers and improve adsorption effect.
According to this execution mode, same with above-mentioned execution mode, by using the CF that contains as insulating gas
3The I mist can provide that a kind of global warming coefficient is little, arc performance and electrical insulation capability be good, and by to containing CF
3The CF of I mist
3The decomposition gas of I and the absorption of moisture and the also good gas-insulated switchgear device of performance of switching on.
In addition, by containing CF
3The iodine that the I mist decomposes, fluorine combine with moisture in the closed container sometimes and generate hydrogen iodide gas, hydrogen fluoride gas, but these gases can be adsorbed on the adsorbent 101 of adsorbent equipment 100, so also can access the effect same with above-mentioned execution mode in this occasion.
Have again, in the above-described embodiment, consider the convenience that splashes and reclaim of adsorbent 101, hygroscopic agent, with adsorbent 101, hygroscopic agent is contained in the bag, but also can not use bag 102, and adsorbent 101, hygroscopic agent directly are contained in the space that is formed by the cylinder 104 on base 303 and this base 303.In addition, also can not use the container of the maintenance usefulness that constitutes by the cylinder 304 on base 303 and this base 303, and will hold the bag 102 of adsorbent 101, the bag 102 that holds hygroscopic agent is arranged in the closed container.
In addition, in the above-described embodiment, in the circuit breaker container 80 of breaker unit, be provided with the vacuum circuit-breaker 22 of vacuum closed-type, thus produce large current interruption electric arc circuit breaker electrode not can with contain CF
3The contact of I mist, so can in the sealing container, not produce iodine gas, the closed container of the disconnector unit of the little current interruption electric arc when producing the also little switch of breaking current than circuit breaker, have in the closed container of earthing device, enclosed respectively and contain CF
3The I mist is so can will be suppressed to bottom line as all iodine gas of gas-insulated switchgear device.
Its result, same with above-mentioned execution mode, can provide that a kind of global warming coefficient is little, arc performance and electrical insulation capability be good, and by to containing CF
3The CF of I mist
3The decomposition gas of I and the adsorption function of moisture and the also good gas-insulated switchgear device of performance of switching on.
Claims (15)
1. a gas insulated electric apparatus possesses: the closed container of enclosing insulating gas; And be arranged on vacuum circuit-breaker and cutter in this closed container with state with above-mentioned closed container electric insulation, it is characterized in that,
Arc light when above-mentioned vacuum circuit-breaker is current interruption can not leak into the outer Sun-shading type of vacuum tank, and above-mentioned insulating gas is to be CF more than 40% by volumetric ratio
3I and condensing temperature are than this CF
3The also low and global warming coefficient ratio SF of I
6The mist that other insulating gass that gas is also little constitute, the air pressure of this mist is 0.1～0.3MPaabs.
2. gas insulated electric apparatus according to claim 1 is characterized in that,
It is 40～70% above-mentioned CF that above-mentioned mist comprises volumetric ratio
3I, remainder are other insulating gass.
3. gas insulated electric apparatus according to claim 1 is characterized in that,
Above-mentioned other insulating gass are the gas of selecting from dry air, carbon dioxide and nitrogen more than a kind.
4. gas insulated electric apparatus according to claim 1 is characterized in that,
Above-mentioned decomposition gas and/or the low-molecular-weight gas that produces by reaction in closed container comprise a kind of in iodine gas, fluorine gas, hydrogen iodide gas, the hydrogen fluoride gas at least.
5. a gas insulated electric apparatus possesses switch in closed container, it is characterized in that,
In above-mentioned closed container, enclose CF
3The mist of I and other insulating gass, and in above-mentioned closed container, possess adsorbent, this adsorbent optionally adsorbs gas that is produced by the decomposition of above-mentioned insulating gas and/or the low-molecular-weight gas that produces by reaction in closed container.
6. gas insulated electric apparatus according to claim 5 is characterized in that,
Above-mentioned adsorbent is an activated carbon.
7. gas insulated electric apparatus according to claim 5 is characterized in that,
Above-mentioned decomposition gas and/or the low-molecular-weight gas that produces by reaction in closed container comprise a kind of in iodine gas, fluorine gas, hydrogen iodide gas, the hydrogen fluoride gas at least.
8. a gas insulated electric apparatus holds circuit breaker, cutter, earthing device in closed container, it is characterized in that,
Above-mentioned circuit breaker is configured in to enclose as vacuum circuit-breaker and contains CF
3In the above-mentioned closed container of I mist, above-mentioned cutter and earthing device are configured in respectively to enclose and contain CF
3In the above-mentioned closed container of the insulating gas of I mist, in each closed container of above-mentioned cutter and earthing device adsorbent is set, this adsorbents adsorb is by CF
3Reaction in the decomposition of I and/or the above-mentioned closed container and the low-molecular-weight gas that generates.
9. gas insulated electric apparatus according to claim 8 is characterized in that,
It is 40～70% above-mentioned CF that above-mentioned mist comprises volumetric ratio
3I, remainder are other insulating gass.
10. gas insulated electric apparatus according to claim 8 is characterized in that,
Above-mentioned other insulating gass are the gas of selecting from dry air, carbon dioxide and nitrogen more than a kind.
11. gas insulated electric apparatus according to claim 8 is characterized in that,
Possess a plurality of closed containers of cutting apart the above-mentioned gas insulation electrical equipment, make to be connected to become and dispose each closed container possibly, the CF of the mist of each closed container in the mode that constitutes gas insulated electric apparatus
3The mixing ratio of I and other insulating gass is different.
12. gas insulated electric apparatus according to claim 11 is characterized in that,
The air pressure difference of the insulating gas in above-mentioned each closed container.
13. gas insulated electric apparatus according to claim 8 is characterized in that,
Above-mentioned insulating gas is to be CF more than 40% by volumetric ratio
3I and condensing temperature are than this CF
3The also low and global warming coefficient ratio SF of I
6The mist that other also little insulating gass constitute, the air pressure of this mist is 0.1～0.3MPaabs.
14. gas insulated electric apparatus according to claim 8 is characterized in that,
Above-mentioned decomposition gas and/or the low-molecular-weight gas that produces by reaction in closed container comprise a kind of in iodine gas, fluorine gas, hydrogen iodide gas, the hydrogen fluoride gas at least.
15. gas insulated electric apparatus according to claim 8 is characterized in that,
Above-mentioned adsorbent is an activated carbon.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006002242A JP4724003B2 (en) | 2006-01-10 | 2006-01-10 | Gas insulated switchgear |
| JP2006002242 | 2006-01-10 | ||
| JP2006109616 | 2006-04-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101001006A true CN101001006A (en) | 2007-07-18 |
Family
ID=38340680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710001562 Pending CN101001006A (en) | 2006-01-10 | 2007-01-08 | Gas insulated electric equipment |
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| Country | Link |
|---|---|
| JP (1) | JP4724003B2 (en) |
| CN (1) | CN101001006A (en) |
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| GB1423407A (en) * | 1972-04-28 | 1976-02-04 | Westinghouse Electric Corp | High voltage vacuum interrupter with an x-ray absorbing outer shield |
| JP4244081B2 (en) * | 1998-11-26 | 2009-03-25 | 株式会社日立製作所 | Gas insulated electrical equipment |
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| JP2007185060A (en) | 2007-07-19 |
| JP4724003B2 (en) | 2011-07-13 |
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