CN104900446A - Gas damper for a high-voltage switch - Google Patents
Gas damper for a high-voltage switch Download PDFInfo
- Publication number
- CN104900446A CN104900446A CN201510097458.8A CN201510097458A CN104900446A CN 104900446 A CN104900446 A CN 104900446A CN 201510097458 A CN201510097458 A CN 201510097458A CN 104900446 A CN104900446 A CN 104900446A
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- Prior art keywords
- contact element
- gas
- piston
- power switch
- cylinder
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- 229960001245 olaflur Drugs 0.000 claims description 5
- JECYNCQXXKQDJN-UHFFFAOYSA-N 2-(2-methylhexan-2-yloxymethyl)oxirane Chemical compound CCCCC(C)(C)OCC1CO1 JECYNCQXXKQDJN-UHFFFAOYSA-N 0.000 claims description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 3
- 239000012159 carrier gas Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 8
- 125000004432 carbon atom Chemical group C* 0.000 description 8
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- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 238000005325 percolation Methods 0.000 description 4
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- NDMMKOCNFSTXRU-UHFFFAOYSA-N 1,1,2,3,3-pentafluoroprop-1-ene Chemical compound FC(F)C(F)=C(F)F NDMMKOCNFSTXRU-UHFFFAOYSA-N 0.000 description 2
- FXRLMCRCYDHQFW-UHFFFAOYSA-N 2,3,3,3-tetrafluoropropene Chemical compound FC(=C)C(F)(F)F FXRLMCRCYDHQFW-UHFFFAOYSA-N 0.000 description 2
- QBTUCBKAWGUMMK-UHFFFAOYSA-N C=CC.[F] Chemical group C=CC.[F] QBTUCBKAWGUMMK-UHFFFAOYSA-N 0.000 description 2
- 241000722921 Tulipa gesneriana Species 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
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- 238000000926 separation method Methods 0.000 description 2
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- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
- H01H33/74—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
- H01H3/605—Mechanical arrangements for preventing or damping vibration or shock making use of a fluid damper
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H2033/028—Details the cooperating contacts being both actuated simultaneously in opposite directions
Landscapes
- Circuit Breakers (AREA)
Abstract
The invention relates to a gas damper for a high-voltage switch. The high-voltage switch comprises a housing that determines a volume of gas for a dielectrically insulating gas; a first contact element and a second contact element, between which optionally a electrically conductive connection can be formed, wherein the first and the second contact element along an axis the high voltage switch is movable; a drive connected to the first contact element is connected to the first contact element for separating the electrically conductive connection in a first direction along the axis to move; a transmission, which on its drive side to the first contact element and at its output side with the second contact element is connected to the movement of the first contact element on the second contact element to be transmitted, so that the second contact element for separating the electrically conductive connection in one of the first direction opposite, second direction along the axis is movable; and a gas damper, which is provided on the output side of the transmission for the movement of the second contact element to be damped.
Description
Technical field
Generally speaking, the present invention relates to the high-voltage switch gear with gas cushion, especially power switch.The invention still further relates to the method for the separately conductive connection of high-voltage switch gear (especially power switch).
Background technology
Known such switch in the prior art, removes an arcing contact (such as extinguishing arc tulip shape part (L schtulpe)) wherein for separating the electrical connection with another arcing contact (such as selling).Also known such switch, two arcing contacts move in the opposite direction wherein.
Such as in document EP 0 809 269, describe a kind of high-voltage circuit breaker, it is with movable, relative two arc contacts parts put coaxially with each other.Drive rod is fixed on insulating nozzle place and the arc contact part relatively put by the lever actuated being arranged in the both arms on switch axis.
In american documentation literature US 3 896 282, describe the short disconnect of power with two contacts that can move on the contrary, it is arranged in the housing of filling with protective gas.Contact is connected by rod gear, and rod gear comprises the lever of the both arms be arranged on switch axis, and it is with the connecting rod hinged in both sides.
Power switch with the bidirectional-movement of contact has a series of advantage relative to the power switch with single movement usually.Can significantly improve the speed in the separation process of arcing contact, and the energy that the need of drive unit use can keep approximate identical with in the power switch of single movement.But transmission device, opening or separation process (acceleration is the highest with braking) period stand under load, can produce metal or plastic particles wherein thus.Particulate can worsen non-conducting characteristic and after durability test (typically, 10000 times mechanical handover operation), cause having problem in state verification.
Summary of the invention
The object of the invention is to the load of the transmission device be reduced in high-voltage switch gear (especially power switch).This object is realized by the method be connected with the conduction for separating high-voltage switch gear according to the high-power switchgear of independent claims.Other advantage, feature, aspect and details and preferred embodiment of the present invention of the present invention is obtained by dependent claims, specification and accompanying drawing.
Provide a kind of with gas cushion high-power switchgear (especially power switch) according to an aspect of the present invention.High-power switchgear comprises: housing, and it determines the gas volume of the gas playing insulating effect non-conductingly; First contact element and the second contact element, can form conductive connection between which alternatively, and wherein, the first contact element and the second contact element can along the axial-movements of high-voltage switch gear; And drive unit, it is connected with the first contact element, so as to make the first contact element in a first direction along axial-movement for separately conductive connection.In addition, high-power switchgear comprises transmission device, it is connected with the first contact element at its driving side place, and be connected with the second contact element at its outlet side place, so that by the Movement transmit of the first contact element on the second contact element, make the second contact element in a second direction that is opposite the first direction along axial-movement for separately conductive connection.At this, gas cushion is arranged on the outlet side place of transmission device, so that the motion of the second contact element of decaying.
According to a further aspect in the invention, a kind of method for the separately conductive connection of high-voltage switch gear (especially power switch) is provided.The method has following steps: make the first contact element in a first direction along the axial-movement of high-voltage switch gear by means of drive unit; The motion of the first contact element is delivered to by means of transmission device and is arranged on second contact element at its outlet side place, thus the second contact element is moved in a second direction that is opposite the first direction; Separately the first contact element and the second contact element; And the motion of the second contact element of decaying by means of the gas cushion at the outlet side place being arranged on transmission device.
The invention still further relates to the device for implementing disclosed method and comprise the device feature for implementing corresponding independent method step.The present invention such as also relates to for being installed in high-voltage switch gear or being used in the transmission device in high-voltage switch gear, thus high-voltage switch gear has above or the performance that illustrates in the claims.
Accompanying drawing explanation
Embodiments of the invention shown in the drawings and below it being further described.Accompanying drawing schematically, if desired in the mode of cutting correspondingly only exemplarily to show with cross section in side view:
Fig. 1 shows the power switch being with good grounds gas cushion of the present invention;
Fig. 2 shows the part according to high-voltage switch gear of the present invention;
Fig. 3 A-3C shows the motion state when the contact separately according to gas cushion of the present invention;
Fig. 4 shows the part according to gas cushion of the present invention;
Fig. 5 A-5B shows the arrangement according to gas cushion of the present invention of Fig. 4 when separately contact or formation contact; And
Fig. 6 shows the part according to another gas cushion of the present invention.
Embodiment
Fig. 1 show schematically show high-voltage switch gear, especially power switch.This power switch typically is Compressed Gas switch, and it is such as used in high-voltage fence.Power switch typically comprises the common part of at least some of this switch, such as, be filled with the housing of protective gas, paired contact (especially a pair arcing contact and if desired a pair rated current contact).Usually, one in arcing contact is designed to tulip shape part (Tulpe), and another is designed to pin.Arcing contact can move each other along switching axis.Typically, housing 10 determines the gas volume of the gas playing insulating effect non-conductingly, and this gas is protective gas.
Preferably, often pair of contact has the first contact element and the second contact element.For high-voltage switch gear shown in Figure 1, arcing contact 21,22 to having the first contact element 21 and the second contact element 22, and rated current contact 23,24 to having the first contact element 23 and the second contact element 24.Correspondingly between the first contact element 21,23 with the second contact element 22,24, conductive connection can be formed alternatively in the following manner, that is, make the first contact element 21,23 and second contact element 22,24 move along the axis A of high-voltage switch gear.The first right contact element 23 of name contact 23,24 is connected with insulating part or insulating nozzle 25.
In addition, high-voltage switch gear has drive unit 30 (at this such as main drive 30) and transmission device 40 (at this such as auxiliary drive).At least one (that is, the first right contact element 21 of arcing contact or first right contact element 23 of nominal contact) in drive unit 30 and the first contact element 21,23 or be connected with 23 with two the first contact elements 21.Transmission device 40 has driving side and outlet side.At this, driving side is such sidepiece of transmission device 40, and it is connected with drive unit 30 by the first contact element 21,23.Preferably, transmission device 40 is not directly connected with the first contact element 21,23.Transmission device 40 especially can have Connection Element 41, via it, transmission device 40 is connected with insulating nozzle 25, to form nonconducting connection at the first contact element 21,23 with between transmission device 40.Transmission device 30 is connected with the second contact element 22,24 at its outlet side place.
In order to separately (opening) conductive connection, drive unit 30 makes the first contact element 21,23 move along axis A on first direction R1.The Movement transmit of the first contact element 21,23 on the second contact element 22,24, makes the second contact element 22,24 move for separating conductive connection along axis A on the second direction R2 contrary with first direction R1 by transmission device 40.This comprises this situation: during independent motion stage, the direction of motion of the first contact element 21,23 can be consistent with the direction of motion of the second contact element 22,24, such as when the second contact element 22,24 is at setting in motion by dead point time (as such as illustrated in document EP 1 630 840 A).
In order to closed (formation) conductive connection, drive unit 30 first contact element 21,23 is moved on second direction R2 and transmission device 40 by this Movement transmit on the second contact element 22,24, thus the second contact element 22,24 is moved on first direction R1.Although herein illustrating the motion of two the first contact elements and the second contact element 21,22,23,24, also can make the first right contact element and the motion of the second contact element 21,22 of arcing contact in the flexible program of the execution mode where this respect illustrates in office, and (such as nominal contact 24) such as position in nominal contact is fixed.
Contact element 21,22 is very high with its speed of leaving of moving each other, to minimize the generation of electric arc.Therefore, transmission device operationally and especially during the durability test or Road test of machinery, be subject to serious load, can produce the grain amount of can not ignore, such as wear particle thus.Produce to reduce particle, can improve slidingsurface, this needs the space requirement of the raising of transmission device and the cost of raising.Based on a large amount of investigation, inventor has been found that the load of transmission device is high especially when braking the contact element (being called as the second contact element in this respect) by actuator drives.This problem also will be aggravated in the compact structure type expected in principle of switch, because usually also shorten braking distance in this case and therefore improve the load of transmission device further.
As the scheme of problem solving or reduce transmission device load, the load proposing transmission device is reduced by the buffer installing or be used in outlet side.This is especially favourable in the high-voltage switch gear recently developed, and it has extra high speed, because be applied on transmission device and sliding bearing at this extra high acceleration and power when separately contacting.
At this, contact separately conductive connect time motion can be divided into two subdivisions according to the trend of speed, be especially divided into from setting in motion until the maximum speed of move moment duration accelerator and from moment of the maximum speed of motion until motion terminates the braking procedure of (especially until at the end of the major part of moving).Therefore, the subdivision that accelerator is moved towards corresponding to the speed with mainly positive slope and therefore mainly positive acceleration, and braking procedure is corresponding to the subdivision of the speed trend with main negative slope and therefore mainly negative acceleration.Typically, duration of accelerator be several milliseconds to a few tens of milliseconds, wherein, the duration of usual braking procedure is shorter than the duration of accelerator.The duration of accelerator especially can be such as 0.01s to 0.05s, and the duration of braking procedure is such as 0.005s to such as 0.025s.
As illustrated above, the motion in accelerator or braking procedure has not forcibly needed to move towards monotone increasing or decline.In fact, high-voltage switch gear also can so design, that is, there is the motion commutation of at least one contact element, therefore, the first contact element and the second contact element temporarily move in a same direction, as such as illustrated in document EP 1 630 840 A1.
Therefore, the second contact element 22,24 should be understood as along moving of axis A on the second direction R2 contrary with the first direction R1 of the first contact element 21,23: the motion side that (especially after separating arcing contact) is being different from the first contact element 21,23 in the major part of motion process of the second contact element 22,24 moves upward.
Acceleration during accelerator such as can quantitatively be about 100g to 300g (1000m/s
2to 3000m/s
2), and/or the acceleration during braking procedure can quantitatively be about 300g to 700g (3000m/s
2to 7000m/s
2).Therefore, braking procedure presents the stronger load of transmission device.If with the quality of the 2kg to 3kg of the second contact element 22,24 for starting point, then therefore sizable power is applied on transmission device.
Use lighter material (such as aluminium) to be only feasible within the scope of limited because the second contact element such as switch time and be especially exposed to during power test heat gas in.At this, the gas surrounded in the housing 10 especially can heat so far forth, that is, gas can damage the second contact element 22,24.In addition, top should be advantageously made up of very heavy material (such as tungsten), and remaining surface be exposed in the gas of heat is such as become by steel or copper, to reach very high resistance.Therefore, the quality reducing the second contact element 22,24 is not preferred method.
Another feasible scheme for reducing the load of transmission device is the gearratio changing transmission device.But this will cause the length of raising haul distance, the second contact element 22,24 and total size and improve moving-mass.Because the quality improved also will improve the power be applied to during accelerator on transmission device, result especially can make insulating part or insulating nozzle become curved thus.
According to certain embodiments of the present invention, in order to advantageously reduce the load of transmission device, now buffer can be provided with, especially gas cushion, so that the motion of attenuated contact element.Gas cushion especially can be arranged on the outlet side place of transmission device, so that the motion of the second contact element of decaying (such as 22,24).
As shown in fig. 2, show the part according to high-voltage switch gear of the present invention with the cross sectional view of side direction, gas cushion 50 can be arranged in high-voltage switch gear.Gas cushion 50 is preferably arranged on the outlet side place of transmission device 40, the motion of the second contact element 22,24 to decay, namely, or the motion of the second right contact element 22 of decay arcing contact, or the motion of the second right contact element 24 of nominal contact of decaying, or the motion of two the second contact elements 22,24 to decay, that is, the motion of the decay right motion of the second contact element 22 of arcing contact and second contact element 24 of the right of nominal contact.Alternatively, gas cushion 50 also can be arranged on driving side place, so that one or two the motion decayed in the first contact element 21,23.Wherein, for the situation of the high-voltage switch gear with complete bidirectional-movement, gas cushion also only can act on a place in the first contact element or the second contact element 21,22,23,24, so that the motion of all contact elements 21,22,23,24 of decaying.In this case, also can arrange at least two gas cushions, one is connected with the second right contact element 22 of arcing contact 21,22 wherein, and another gas cushion is connected with the second right contact element 24 of nominal contact 23,24.
According to some execution modes that can combine with other execution mode, the gas of the electrification insulating effect for decaying can be used in gas cushion 50.
In addition, according to some execution modes that can combine with other execution mode, be provided with piston 26, it is connected, therewith to move with the second contact element 22,24.In addition, according to some execution modes that can combine with other execution mode, gas cushion 50 has cylinder 51, and guiding wherein has piston 26.
As shown in fig. 2, cylinder 51 can have unlimited end (piston is inserted in cylinder 51 by this end) and the end relative to the closed end of opening wide.Piston 26 can guide along from the end opened wide to the path of closed end in cylinder 51.In order to guide piston 26 by interference-free in cylinder as much as possible, especially in order to piston 26 does not tilt in cylinder 50, can be provided with supporting member 27, piston 26 and/or the second contact element 22,24 are bearing in supporting member 27 slidably.In addition, piston 26 or the second contact element 22,24 are connected with transmission device 40 by swing arm 28.
Gas cushion 50 is especially designed to the braking procedure of decay second contact element 22,24.In order to realize this situation, gas cushion can be arranged to opening 52,53, its corresponding connection be formed between remaining gas volume of housing 10 and the inside of cylinder 51.Especially the first opening 52 can be arranged in the centre portion between the end opened wide and closed end.In addition, the second opening 53 can be arranged on (in other cases) closed end or in.
Fig. 3 A-3C shows the motion state when the contact separately according to gas cushion of the present invention.At this, piston 26 is moved along from the end opened wide to the path of closed end.The end in cylinder 50 that is contained in of piston 26 can represent by d along the position in path.
Fig. 3 A shows at setting in motion so that separately conductive state when connecting, namely such state, wherein, and contact closure and form conductive connection.The end be contained in cylinder 50 of piston is arranged in d=0.If make now contact (that is, the first contact element and the second contact element 21,23,22,24) move separately, then piston 26 slides in cylinder 51, and therefore, piston 26 moves upward towards the side of closed end.At this, piston 26 is compressed in the gas of existence in cylinder 51 and gas fraction is released the first opening 52, as illustrated by arrow 54 in figure 3 a.
As explained above, piston 26 experiences accelerator when setting in motion, and during accelerator, piston moves along path section L1.Fig. 3 B shows the state at the end of accelerator, is arranged in position d=L1 in the end be contained in cylinder 51 of this state piston 26.
At this, the first opening 52 is advantageously arranged in such position of cylinder 51, and this position is corresponding to position d=L1.Therefore, the first opening 52 exposes during accelerator, that is, especially do not hidden or locking by piston 26 during accelerator.Therefore, can be left from cylinder 51 during accelerator by the air of the motion compresses of piston 26 in cylinder 51, with not being with or without impact thus the accelerator that decays.
As illustrated equally, after accelerator, follow braking procedure closely above, during braking procedure, piston 26 moves along path section L2.Fig. 3 B shows the state during braking procedure, and the end be contained in cylinder 51 of piston 26 is arranged in position L1<d<L2 in a state in which.In a state in which, the first opening 52 advantageously by piston 26 locking, thus does not have gas or does not at least almost have gas can be spilt from cylinder 51 by the first opening 52.
Especially can according to some execution modes that can combine with other execution mode, the first opening 52 so designs, that is, it exposes during the accelerator of piston 26, and covered and especially hidden by piston 26 during the braking procedure of piston 26.
Therefore, the gas between the closed end being present in piston 26 and cylinder 51 in cylinder 51 is compressed towards the motion on the direction of closed end due to piston 26, and in the motion of this decay piston 26.Especially piston 26 moves upward far away towards the side of closed end, and the movement dampens of piston 26 must be more severe.
Therefore, according to some execution modes that can combine with other execution mode, second contact element 22,24 can implement accelerator and braking procedure for separately conductive connection along the path of moving, and gas cushion 50 can be designed to the braking procedure of decay second contact element 22,24.Advantageously, by using gas cushion 50 power occurred in braking procedure to be reduced to about 1/2 (arrangement of imagination identical in other respects relative to not having buffer element 50).According to of the present invention one preferred aspect, gas cushion 50 at least temporarily absorbability, it is corresponding at least 0.5 times of the power be applied on transmission device 40, in some embodiments even at least corresponding to the power always be applied on transmission device 40.
In addition, like that as mentioned above, second opening 53 can be arranged on cylinder 51 end closed in other cases or in, especially during braking procedure, a part for gas by compression is spilt by opening 53, as illustrated by arrow 55 in fig. 3 c.Preferably, the first opening 51 is greater than the second opening 52, and therefore, the first opening 51 opens the flow region larger than the second opening 52.Therefore, by adjusting or determine that the size (particularly by adjustment or flow region or the area of determining the second opening 52) of the second opening 52 especially adjusts the intensity of decay during braking procedure.
In addition, also by selecting the position of the first opening 51 and/or adjustment or determining the size of the second opening 52 and/or determine when should use decay, piston 26 when should be made to arrive inactive state and the decay of which kind of degree should be obtained by arranging or remove the second opening 52.If decay should be realized away from closed end, so especially the second opening 52 can be set.In this case, should Compressed Gas be kept the least possible from the outflow of cylinder 51, to set up sufficiently high pressure, even if affect the maximum speed reached of piston thus negatively.
By being compressed in the gas build-up pressure within cylinder 51 in cylinder 51, it works facing to piston 26, the kinetic energy of dissipation piston 26 thus.By the kinetic energy of dissipation piston 26 can significantly reducing effect to the power on transmission device 40.
Therefore, cylinder 51 at least can be divided into acceleration area and braking section, its section corresponding to piston 26 process during accelerator or braking procedure or distance L1 or L2.
According to some execution modes that can combine with other execution mode, the first opening 52 can be arranged in the acceleration area of cylinder 51 at least in part or even completely, and it is corresponding to the distance of piston 26 process during accelerator.
Fig. 4 illustrates the part shown according to gas cushion of the present invention with the cross section of side direction.As shown in the diagram, valve 56 can be set in the closed end of cylinder 51 in addition.Valve 56 can have valve plate 56a, one or morely enter ring 56b, retainer ring 56c and back-up ring 56d.Enter ring 56b and limit percolation region, gas flow into cylinder 51 by percolation region from housing or therefrom flows out.The position that valve 56 is being expected remains in cylinder 51 by retainer ring 56c.Back-up ring 56d limits the motion of valve plate in cylinder 51.In the closed state of valve 56, valve plate 56a is positioned at and enters on ring 56b, thus enters ring 56b and closed by valve plate 56a.In the state opened, valve plate 56a is manoeuvred in cylinder 51, thus realizes gas exchanges by percolation region.
According to some execution modes that can combine with other execution mode, valve 56 can close when separating conductive connection and open when forming conductive connection.Thus between the moving period for the formation of conductive connection, if piston 26 leaves from cylinder 51 motion, gas flow in cylinder 51 by valve 56, and between the moving period for separately conductive connection, if piston 26 moves in cylinder 51, gas flows out from cylinder 51 by valve 56.Can advantageously realize thus, gas cushion 50 is only decayed and is used for the motion of separately conductive connection, but, do not decay for the formation of the motion of conductive connection.
In certain embodiments, as shown equally in the diagram, piston 26 can be configured to hollow piston 26, and it utilizes end cap 28 to close.The weight of piston 26 can be reduced thus.
In addition, in certain embodiments, gas cushion 50 especially can be connected via transmission body 42 with transmission device 40 in the region of the end of opening.Preferably, gas cushion 50 can be fixed on transmission body 42 place of transmission device 40.
Fig. 5 A shows the closed state of valve 56 with the diagram of amplifying.As already mentioned, valve 56 closes in a state in which, thus does not have gas enter into cylinder 51 by valve 56 and/or spill from cylinder 51.Typically select this state when separating conductive connection.Therefore, make piston 26 towards (that is, towards on the direction of valve 56) motion on the direction of closed end, as illustrated by arrow in fig. 5.
At this, Compressed Gas in the gap between the end of the piston 26 be received in cylinder 51 and the closed end of cylinder 51.As illustrated in arrow by a dotted line, a part for the gas of compression can be refluxed along the outside of the piston 26 in cylinder 51 and be spilt by the first opening 52, partly to relax the pressure set up in cylinder.Share along the gas of piston circumferential surface backflow depends on the pressure of existence and the difference between piston 26 and the diameter of cylinder 51 in cylinder 51 at this.In cylinder 51, the pressure of (especially in the gap between the end of piston 26 and the closed end of cylinder 51) is higher, and the diameter of piston 26 is less compared to the diameter of cylinder 51, more gas refluxes along the circumferential surface of piston 26 and contributes to step-down.
The gas compressed in gap also spills, to contribute to step-down by unshowned second opening 53 in fig. 5.Second opening 53 also can be configured to the one or more openings in the valve plate 56a in the region in percolation region in this case, or is similar to the first opening 51 and is configured in the circumferential surface of cylinder 51 like that, and preferable configuration is near closed end.
Fig. 5 B shows the open mode of valve 56 with the cross section of side direction diagram.As already mentioned, valve 56 is opened in a state in which, thus gas enters into cylinder 51 by valve 56 and/or from wherein spilling.Typically select this state when forming conductive connection, thus motion is not attenuated.Therefore, piston 26 is left, as illustrated by the arrow in Fig. 5 B from the motion of closed end (that is, valve 56).
Therefore, in this case, gas flows in cylinder by the valve 56 opened, thus in cylinder 51, can leave the negative pressure of generation by the gas balance flowed into afterwards because piston 26 moves from cylinder 51.Can prevent from thus occurring negative pressure in cylinder 51, it reacts on the motion of piston 26 and this motion that decays undesirably.
Show another execution mode in figure 6, amplify the end section of cylinder 51 wherein.Typically, relatively very large by (distance) section of piston 26 process when separating conductive connection, and the diameter of piston 26 is relatively very little, thus be difficult to obtain suitable attenuating.Usually at the end of braking procedure, obtain maximum buffering effect, that is, in such region, wherein, the end of piston 26 is positioned near the closed end of cylinder 51.
According to some execution modes that can combine with other execution mode, cylinder 51 can have braking section in addition, and it is corresponding to a part for piston 26 distance of process during braking procedure, and wherein, braking section has such region 58, its diameter d
2be greater than the diameter d of the cylinder 51 in acceleration area
1, acceleration area is corresponding to the part of piston 26 process during accelerator or whole distance.
Especially can another cylinder 57 or cylinder lid 57 be set in region 58, itself and cylinder 51 locking airtightly and there is internal diameter d
2, it is greater than the internal diameter d of cylinder 51
1.In this case, the closed end of cylinder 51 is formed primarily of another cylinder 57.Therefore, the second opening 53 and valve 56 also can be configured in (not shown) in another cylinder 57.
As shown in fig. 6, piston 26 can have diameter d
3, it is less than the diameter d of cylinder 51
1.In addition, the end cap 28 of piston 26 can have diameter d
4, it is greater than the diameter d of piston 26
3and to be less than or no better than the diameter d of cylinder 51
1.Therefore, for diameter d
1, d
2, d
3, d
4be applicable to following relational expression: d
3<d
4<=d
1<d
2.
Utilize and select independent diameter d
1, d
2, d
3, d
4relation each other can reach, and during braking procedure, piston 26 promotes gas and first before it at this Compressed Gas, to reach the buffering effect increased gradually.If the end of piston 26 (that is, end cap 28) arrives region 58, then between end cap 28 and the circumferential surface of another cylinder 57, form gap, the width of its annular is substantially corresponding to difference d
2– d
4.Compression gas now can back up through this gap and flow between this inner circumferential face at cylinder 51 and outer circumferential surface of piston 26 due to difference d
1– d
3in the gap formed.The gas entering into gap can leave, to contribute to step-down from the end opened wide of cylinder 51 or the first opening 51 now again.
By selecting diameter d
1, d
2, d
3, d
4and its relation each other and another cylinder 57 are used for the step-down of the expectation of of braking procedure or the section of any expectation along the position-adjustable of the distance of braking procedure.Especially decay can be reduced in the end of braking section.
In the scope of the disclosure, the gas playing insulating effect is also electric arc arc-extinguishing medium non-conductingly.The medium playing insulating effect in high-power switchgear or gas can be SF non-conductingly
6gas or certain other non-conducting dielectric or electric arc arc-extinguishing medium, do not depend on it whether with gaseous state and/or liquidly to exist.This non-conducting medium playing insulating effect or gas such as can comprise organofluorine compound, it selects from such group, and this group comprises mixture and/or the catabolite of fluorinated ether, oxirane, amine fluoride, fluorinated ketone, fluorinated olefins and these materials.At this, terminology " fluorinated ether ", " oxirane ", " amine fluoride ", " fluorinated ketone " and " fluorinated olefins " relate to the material of at least part of fluorination treatment.Terminology " fluorine ether " especially comprises hydrogen fluorine ether and perfluor ether, and terminology " fluorinated ketone " comprises hydrogen fluorine ketone and perfluor ketone, and terminology " fluorinated olefins " comprises HF hydrocarbon and perfluoroolefine.Advantageously, fluorinated ether, oxirane, amine fluoride and fluorinated ketone carry out fluorination treatment completely, that is, perfluor process.
In certain embodiments, the medium of non-conducting insulating effect is selected from such group, and this group comprises: the mixture of one (or more) hydrogen fluorine ether, one (or more) perfluor ketone, one (or more) HF hydrocarbon and these materials.
In conjunction with the present invention, terminology " fluorinated ketone " especially broadly can be explained and not only should comprise and fluoridize single ketones (Fluormonoketone), and should comprise and fluoridize diketone (Fluordiketone) or commonly fluoridize polyketone (Fluorpolyketone).At this, can laterally be existed by carbon atom restriction in the molecule clearly more than unique carbonyl.Terminology also should be included in the saturated and undersaturated composition with double bond and/or triple bond between carbon atom together.The alkyl chain of the fluorination treatment at least in part of fluorinated ketone is linear or branch and can form ring alternatively.
In certain embodiments, non-conducting play insulating effect medium and electric arc arc-extinguishing medium comprise and fluoridize single ketones as at least one composition, it also can have foreign atom alternatively in the carbon-main chain of molecule, specifically, such as at least one foreign atom is selected from such group, this group comprises: nitrogen-atoms, oxygen atom, sulphur atom, and it replaces the carbon atom (one or more) of respective numbers.Advantageously, fluoridize single ketones (especially perfluor ketone) and there are 3 to 15 or 4 to 12 carbon atoms, and especially there are 5 to 9 carbon atoms.Preferably, fluoridize single ketones and there are lucky 5 and/or lucky 6 and/or lucky 7 and/or lucky 8 carbon atoms.
In certain embodiments, non-conducting dielectric comprises the fluorinated olefins as at least one composition, it selects from such group, this group comprises: with the HF hydrocarbon (HFO) of at least 3 carbon atoms, with the HF hydrocarbon (HFO) of lucky 3 carbon atoms, trans-1, 3, 3, 3-tetrafluor-1-propen (HFO-1234ze, namely, 1, 3, 3, 3 tetrafluoeopropenes), 2, 3, 3, 3-tetrafluor-1-propen (HFO-1234yf, namely, 2, 3, 3, 3 tetrafluoeopropenes), trans-1, 2, 3, 3, 3 pentafluorprop-1-en (HFO-1225ye (E type), namely, 1, 2, 3, 3, 3 five fluorine propylene), cis-1, 2, 3, 3, 3 pentafluorprop-1-en (HFO-1225ye (Z-type), namely, 1, 2, 3, 3, 3 five fluorine propylene) and the mixture of these materials.
Non-conducting dielectric also additionally can have background gas (Hintergrundgas) or carrier gas, and it is different from organofluorine compound and is especially not fluorinated ether, oxirane, amine fluoride, fluorinated ketone and fluorinated olefins.In certain embodiments, carrier gas can be selected from such group, and this group comprises: air, N
2, O
2, CO
2, inert gas, H
2; NO
2, NO, N
2o; Fluorocarbon and especially perfluocarbon, such as CF
4; CF
3i, SF
6; With the mixture of these materials.
The reliability of high-voltage switch gear, operational security and life-span can be improved according to some execution modes.In addition can reduce and produce particulate or wearing and tearing.Also can improve the durability of transmission device 40.
Thought based on these execution modes also can be used for the high-voltage switch gear with triple motion.In this case, gas cushion can be connected and the power occurred during braking procedure that decays with the pipeline of motion.
Generally speaking, by the suitable structure dissipation kinetic energy of gas cushion.
Claims (11)
1. a high-voltage switch gear, especially power switch, with
-housing (10), it determines the gas volume of the gas playing insulating effect non-conductingly;
-the first contact element (21; 23) and the second contact element (22; 24), the connection of conduction can be formed between which alternatively, wherein, described first contact element and the second contact element (21,22; 23; 24) can move along the axis of described high-voltage switch gear (A);
-drive unit (30), itself and described first contact element (21; 23) be connected, to make described first contact element (21; 23) move for separately conductive connection along axis (A) on first direction (R1);
-transmission device (40), it is at its driving side place and described first contact element (21; 23) be connected, and at its outlet side place and described second contact element (22; 24) be connected, so that by described first contact element (21; 23) Movement transmit is to described second contact element (22; 24) on, thus described second contact element (22; 24) can move for separating conductive connection along axis (A) in the second direction (R2) contrary with first direction (R1); And
-gas cushion (50), it is arranged on the outlet side place of described transmission device (40), to decay described second contact element (22; 24) motion.
2. power switch according to claim 1, is characterized in that, uses the gas for the electrification insulating effect of decaying in described gas cushion (50).
3. power switch according to claim 1 and 2, is characterized in that, described second contact element (22; 24) implement the connection for separately conduction of accelerator and braking procedure along the path for moving, and wherein, described gas cushion (50) is designed to described second contact element (22 of decaying; 24) braking procedure.
4. power switch according to any one of claim 1 to 3, is characterized in that, described gas cushion (50) has: piston (26), itself and described second contact element (22; 24) be connected, therewith to move; With cylinder (51), guide wherein and have described piston (26).
5. power switch according to claim 4, it is characterized in that, described cylinder (51) has the first opening (52), and it is formed in the connection between remaining gas volume of described housing (10) and the inside of described cylinder (51).
6. power switch according to claim 5, it is characterized in that, described first opening (52) is arranged in the acceleration area of described cylinder (51) at least in part, and this acceleration area is corresponding to the distance of described piston (26) process during accelerator.
7. the power switch according to claim 5 or 6, it is characterized in that, described first opening (52) is so designed, namely, it exposes during the accelerator of described piston (26), and is hidden by described piston (26) during the braking procedure of described piston (26).
8. the power switch according to any one of claim 4 to 7, it is characterized in that, described cylinder (51) has braking section in addition, it is corresponding to the distance of described piston (26) process during braking procedure, and wherein, described braking section has such region (58), its diameter (d
2) be greater than the diameter (d of the described cylinder (51) in acceleration area
1).
9. the power switch according to any one of the claims, is characterized in that, described gas cushion (50) has valve (56), and it closes when the connection of separately conducting electricity, and opens when forming the connection of conduction.
10. the power switch according to any one of the claims, it is characterized in that, the non-conducting gas playing insulating effect to be present in described power switch and to comprise organofluorine compound, it selects from such group, and this group comprises: fluorinated ether, oxirane, amine fluoride, fluorinated ketone, fluorinated olefins; And the mixture of these compositions and/or catabolite; And the non-conducting gas wherein, in described power switch especially also comprises carrier gas.
11. 1 kinds of methods for the high-voltage switch gear separately according to any one of the claims especially conductive connection of power switch, wherein, the method comprises:
-make the first contact element (21 by means of drive unit (30); 23) move along the axis (A) of described high-voltage switch gear on first direction (R1),
-by described first contact element (21; 23) motion is delivered to the second contact element (22 being arranged on its outlet side place by means of transmission device (40); 24) on, thus described second contact element (22 is made; 24) above move in the second direction (R2) contrary with first direction (R1),
-separately described first contact element (21; 23) with described second contact element (22; 24), and
-to decay described second contact element (22 by means of the gas cushion (50) at the outlet side place being arranged on described transmission device (40); 24) motion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014102929.1A DE102014102929A1 (en) | 2014-03-05 | 2014-03-05 | Gas damper for a high voltage switch |
| DE102014102929.1 | 2014-03-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104900446A true CN104900446A (en) | 2015-09-09 |
| CN104900446B CN104900446B (en) | 2017-10-13 |
Family
ID=53883823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510097458.8A Active CN104900446B (en) | 2014-03-05 | 2015-03-05 | Gas cushion for high-voltage switch gear |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN104900446B (en) |
| DE (1) | DE102014102929A1 (en) |
| FR (1) | FR3018388B1 (en) |
Cited By (4)
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|---|---|---|---|---|
| WO2017144018A1 (en) * | 2016-02-26 | 2017-08-31 | 中化蓝天集团有限公司 | Composition comprising fluorine-containing ketone |
| CN108346547A (en) * | 2017-01-25 | 2018-07-31 | Ls 产电株式会社 | Use the twofold motion gas-insulated switchgear with multiple bars |
| CN108695105A (en) * | 2017-04-07 | 2018-10-23 | Abb瑞士股份有限公司 | Gas insulation breaker for disconnecting electrical connection and method |
| CN110071012A (en) * | 2019-05-08 | 2019-07-30 | 沈阳工业大学 | A kind of double acting arc-chutes of self extinguishing type |
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| US4296288A (en) * | 1978-10-30 | 1981-10-20 | Tokyo Shibaura Denki Kabushiki Kaisha | Gas insulated disconnecting switches |
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| WO2012155952A1 (en) * | 2011-05-13 | 2012-11-22 | Abb Technology Ag | Double-motion gas insulated type circuit breaker |
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| US3896282A (en) | 1973-05-25 | 1975-07-22 | S & C Electric Co | High voltage circuit interrupting device |
| DE19622460C2 (en) * | 1996-05-24 | 1998-04-02 | Siemens Ag | High-voltage circuit breaker with two drivable switch contact pieces |
-
2014
- 2014-03-05 DE DE102014102929.1A patent/DE102014102929A1/en active Pending
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- 2015-03-05 CN CN201510097458.8A patent/CN104900446B/en active Active
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| DE916192C (en) * | 1952-02-07 | 1954-08-05 | Voigt & Haeffner Ag | Heavy-duty electrical switch |
| US4296288A (en) * | 1978-10-30 | 1981-10-20 | Tokyo Shibaura Denki Kabushiki Kaisha | Gas insulated disconnecting switches |
| CN101048836A (en) * | 2004-08-23 | 2007-10-03 | Abb技术有限公司 | Heavy-duty circuit breaker with movement reversal |
| CN201584359U (en) * | 2009-01-16 | 2010-09-15 | 北京维益埃电气有限公司 | Gas buffer |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017144018A1 (en) * | 2016-02-26 | 2017-08-31 | 中化蓝天集团有限公司 | Composition comprising fluorine-containing ketone |
| CN107126660A (en) * | 2016-02-26 | 2017-09-05 | 中化蓝天集团有限公司 | A kind of composition for including fluorinated ketones contained |
| CN107126660B (en) * | 2016-02-26 | 2021-02-05 | 中化蓝天集团有限公司 | Composition containing fluoroketone |
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| CN108346547A (en) * | 2017-01-25 | 2018-07-31 | Ls 产电株式会社 | Use the twofold motion gas-insulated switchgear with multiple bars |
| CN108346547B (en) * | 2017-01-25 | 2019-11-05 | Ls 产电株式会社 | Use the twofold motion gas-insulated switchgear with multiple bars |
| CN108695105A (en) * | 2017-04-07 | 2018-10-23 | Abb瑞士股份有限公司 | Gas insulation breaker for disconnecting electrical connection and method |
| CN108695105B (en) * | 2017-04-07 | 2022-06-07 | 日立能源瑞士股份公司 | Gas-insulated circuit breaker and method for breaking an electrical connection |
| CN110071012A (en) * | 2019-05-08 | 2019-07-30 | 沈阳工业大学 | A kind of double acting arc-chutes of self extinguishing type |
| CN110071012B (en) * | 2019-05-08 | 2024-02-06 | 沈阳工业大学 | Self-energy double-acting arc extinguishing chamber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104900446B (en) | 2017-10-13 |
| DE102014102929A1 (en) | 2015-09-10 |
| FR3018388A1 (en) | 2015-09-11 |
| FR3018388B1 (en) | 2018-04-27 |
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