CN101447368B - Buffering gas insullation circuit breaker - Google Patents
Buffering gas insullation circuit breaker Download PDFInfo
- Publication number
- CN101447368B CN101447368B CN2008101803223A CN200810180322A CN101447368B CN 101447368 B CN101447368 B CN 101447368B CN 2008101803223 A CN2008101803223 A CN 2008101803223A CN 200810180322 A CN200810180322 A CN 200810180322A CN 101447368 B CN101447368 B CN 101447368B
- Authority
- CN
- China
- Prior art keywords
- gas
- electric arc
- hollow cylinder
- blade
- insulation nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/64—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid wherein the break is in gas
-
- 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
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
- H01H2033/912—Liquified gases, e.g. liquified SF6
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2217/00—Facilitation of operation; Human engineering
- H01H2217/046—Enhanced legend space by smaller actuators
Landscapes
- Circuit Breakers (AREA)
Abstract
The present invention provides an economic buffering gas insulation circuit breaker with small volume and height using a manipulator with small operation force. A container (10) filled with insulation gas is at least equipped with fixed and movable main adapters (21, 22), fixed side and movable side electric arc adapters (23, 24), a buffering device having a cushion cylinder (25) and a piston (26), and a circuit breaker part (20) having an insulation nozzle (27) for spraying the insulation gas compressed by the buffering device to the electric arc between the electric arc adapters when the current is break; the front end of the insulation nozzle (27) is provided with an e-shaped press part (27A) that is capable of moving in the inner side of the insulation nozzle, and a hollow cylinder part (33) configured with the fixed side electric arc adapter (23) with one heart, the hollow cylinder part (33) is provided with a press plate (34) for forming a gas exhaust opening (35) on the opposite side of the insulation nozzle, the high-temperature and high pressure insulation gas is held between the e-shaped press part (27A) and the press plate (34) of the hollow cylinder part (33) for some time, and applies pressure to the e-shaped press part (27A).
Description
Technical field
The present invention relates to a kind of buffering gas insullation circuit breaker, be meant a kind of buffering gas insullation circuit breaker of operating physical force of the operator that when current interruption, can reduce to drive the portion of opening circuit especially.
Background technology
Usually, buffering gas insullation circuit breaker is contained in the metallic container, disposes the portion that opens circuit that is made up of fixing and movable main connector and other parts, in container, fills the good SF of insulating properties extinguishing arc property simultaneously
6Deng insulating gas.
As everyone knows, the open circuit formation of portion comprises: the electric arc connector of fixing and movable main connector, fixation side and the movable side that links to each other with electrical conductor, be used for when opening circuit action compressed dielectric gas the formation buffer unit bounce cylinder and piston and the insulating gas of arc spraying compression is used for the insulation nozzle etc. of extinguishing arc.
The movable side that includes the electric arc connector of the portion of opening circuit, movable main connector and buffer unit is all driven by operator.At this moment, make its extinguishing arc to insulating gas from the arc spraying that each electric arc connector of insulation nozzle aligning is produced by the buffer unit compression, thus current interruption.
The breaking capability of portion is by about the operating physical force of all operators of driving movable side institute owing to open circuit, so, hope to use the big operator of operating physical force.But the work of not considering the portion of opening circuit only adds unitary construction that conference makes operator to the operating physical force of operator merely and becomes big weight and become heavy, also can make the reliability decrease of the whole mechanical strength that comprises the portion of opening circuit.
For this reason, the open communique of the special permission of Japan put down into the solution of the buffering gas insullation circuit breaker of 8-279325 number (special permission document 1) lining record be keep that the breaking capability of the portion of opening circuit is constant, the operating physical force that reduces operator and make its miniaturization.This buffering gas insullation circuit breaker has been done size to the sectional area of the bounce cylinder of formation buffer unit two changes the time, except that the piston of internal configurations as having increased a floating piston the main piston again.
Circuit breaker in the above-mentioned special permission document 1; Open circuit initial stage of opening utmost point action of portion; With floating piston in the big field of compression sectional area with big pressure compressed dielectric gas, only spray in sectional area little field compression and the insulating gas that has compressed in final period of opening utmost point action of the portion of opening circuit with main piston.Therefore, buffer unit makes the opposite force that receives from the hot gas of electric arc one side that sectional area is diminished, and has eliminated the open circuit utmost point action factor of opening of portion of overslaugh.
Also have; The motion about buffering gas insullation circuit breaker that the open communique of the special permission of Japan is put down into 10-269913 number (special permission document 2) lining record is also can guarantee insulating properties about the connector of the fixation side of the portion of opening circuit and movable side having shortened under the spacer conditions; Because the reduced distances between each connector; So the operating physical force of operator can reduce.
Disposed the idiostatic bucking electrode concentric between each fixation side of the portion that opens circuit of this buffering gas insullation circuit breaker and movable side engagement device with the fixed engagement device, and, when moving, bucking electrode and movable main connector move to movable main connector.
The buffering gas insullation circuit breaker of above-mentioned special permission document 1 and 2 records can reduce the operating physical force of operator.But, the open circuit breaking capability of portion is that can insulating gas that see the electric arc that blows to each electric arc connector part be compressed in the short time and determine at the utmost point.In other words, if the operating physical force of operator is the same, breaking capability is to be determined by the size of bounce cylinder that constitutes buffer unit and piston.
Improve the breaking capability of the portion of opening circuit, use the big operator of operating physical force or be assembled into big operator with big buffer unit good, still, no matter which kind of method can make the whole volume of buffering gas insullation circuit breaker become greatly and cost up.Therefore, hope in buffering gas insullation circuit breaker, to use the little operator of operating physical force.
Summary of the invention
The object of the present invention is to provide a kind of little operator of operating physical force that uses, make little, in light weight, the low-cost buffering gas insullation circuit breaker of a volumes.
Buffering gas insullation circuit breaker of the present invention disposes in filling the container of insulating gas: the electric arc connector of fixing and movable main connector, fixation side and movable side, when having the buffer unit of bounce cylinder and piston and having current interruption spray to the insulating gas by said buffer unit compression the portion that opens circuit of the insulation nozzle of the electric arc between said electric arc connector at least; Wherein, Said insulation nozzle front end is formed with blade of a sword shape compression zone; Be provided with said blade of a sword shape compression zone within it side shifting and with the hollow cylinder portion of the electric arc connector concentric arrangement of said fixation side; Said hollow cylinder portion is provided with the compression plate that forms gas discharge hole at the opposition side of insulation nozzle; Between the compression plate of the blade of a sword shape compression zone of said insulation nozzle and said hollow cylinder portion, make the insulating gas that blows to electric arc be detained a period of time, and the gas pressure of high temperature pressurize to said blade of a sword shape compression zone.
More satisfactory ground, the axial dimension of said hollow cylinder portion is that when the trip point of the portion of opening circuit, the blade of a sword shape compression zone of said insulation nozzle leaves hollow cylinder portion before arriving off position in hollow cylinder portion.
Like the buffering gas insullation circuit breaker of processing according to structure of the present invention; Because can be when current interruption to the operation devote every effort to help gesture of the direction that opens circuit; So can increase breaking velocity, therefore, can use the little operator of operating physical force; Under the condition of the opening performance that does not lose the portion of opening circuit, can make integral miniaturization, lightweight and the cost degradation of buffering gas insullation circuit breaker.Electric and mechanical reliability further improves thereby make buffering gas insullation circuit breaker.
Description of drawings
Fig. 1 is vertical sectional schematic diagram that an example is used buffering gas insullation circuit breaker of the present invention;
Fig. 2 is the vertical sectional schematic diagram of the portion that opens circuit when (connection) state of input of Fig. 1;
Fig. 3 is the vertical sectional schematic diagram of the portion that opens circuit when opening the state of utmost point time point of Fig. 2;
Fig. 4 is the vertical sectional schematic diagram of the portion that opens circuit when the state of electric current opening time of Fig. 2;
Fig. 5 is the vertical sectional schematic diagram of the portion that opens circuit when the open position state of Fig. 2;
Fig. 6 is the gas pressure and the time chart of each time point buffer unit from Fig. 2 to Fig. 5 of the present invention.
Embodiment
Embodiment 1
Below use longitudinal type buffering gas insullation circuit breaker of the present invention with regard to an example and once explain to Fig. 6 with Fig. 1.Buffering gas insullation circuit breaker shown in Figure 1 disposes the portion of opening circuit 20 in insulation gas filled metallic cylindrical container 10.
Open circuit the constituting of portion 20: will flow through electric arc connector 23,24, and the buffer unit that constitutes by bounce cylinder that is provided with insulation nozzle 27 25 and piston 26 etc. of the fixing and movable main connector 21,22 of electrical current, the fixation side that produces electric arc when opening circuit action and movable side, and be arranged on the tubular conductor 28,29 of fixation side and the movable side of subtend configuration, and between the inside of the insulating cylinder between them 30.
The bounce cylinder 25 of buffer unit is connected with the operator (not shown) with lever 32 through insulating bar 31.When the action of this operator, when bounce cylinder 25 is moved down and piston 26 cooperation compressed dielectric gas.
Light by insulation nozzle 27 from the time that the electric arc connector 23 of the fixation side that is connected in tubular conductor 28 leaves and very promptly the insulating gas of compression to be blowed to the electric arc connector 23 of fixation side and movable side, the electric arc that is produced between 24, extinguishing arc in the extremely short time.
Be connected with electrical conductor 11,12 in the tubular conductor 28,29 of fixation side that lays respectively at the portion of opening circuit 20 and movable side, and the insulating washer through separately 13,14 is connected with external circuit.
In the portion 20 that opens circuit of the present invention, as shown in Figure 2 have a special design on insulation nozzle 27, and promptly nozzle is at the integrally formed blade of a sword shape of its front end compression zone 27A.And, make the blade of a sword shape compression zone 27A removable joint in hollow cylinder portion 33 on the insulation nozzle 27.
Aforesaid hollow cylinder portion 33 keeps concentric with the electric arc connector 23 of the fixation side that is supported by tubular conductor 28, and is formed with the compression plate 34 of gaseous emission opening 35 in opposite end (upper end shown in the figure) setting of insulation nozzle.
So; The driving operations device; Open circuit portion 20 when current interruption, make and blow to electric arc connector 23, be detained a period of time in the space of a part between the compression plate 34 of the blade of a sword shape compression zone 27A of insulation nozzle 27 and hollow cylinder portion 33 of the insulating gas of electric arc between 24.
Owing to be applied to the high-temperature gas pressure that is detained in the space of the hollow cylinder portion 33 that is provided with compression plate 34 on the blade of a sword shape compression zone 27A of insulation nozzle 27, make to moving of insulating bar 31 sides that connect lever 32 to shift to an earlier date, thereby make the operating physical force of operator obtain helping gesture.
The axial dimension of hollow cylinder portion 33 is considered the opening circuit action of the following portion 20 that opens circuit and is decided.The axial dimension that is hollow cylinder portion 33 is set at: the blade of a sword shape compression zone 27A of insulation nozzle 27 when putting breaking time of portion 20 that opens circuit should be positioned at hollow cylinder portion 33 and be engagement state; And the blade of a sword shape compression zone 27A of portion 20 insulation nozzle 27 before reaching off position that opens circuit should leave hollow cylinder portion 33.
Set gaseous emission opening 35 on the compression plate 34 of hollow cylinder portion 33; Its size for example uses sample to carry out decisions such as emulation; State estimating hollow cylinder portion 33 pressure inside based on the delay of insulating gas and exhaust rise, the blade of a sword shape compression zone 27A of insulation nozzle 27 will according to the driving operations power of operator to help the gesture degree fixed.Have, the size of the compression area of the blade of a sword shape compression zone 27A of insulation nozzle 27 is determined to the fixing of tubular conductor 28 with insulating cylinder 30 internal diameter sizes and when making by tubular conductor 28 again.
Stay for some time in hollow cylinder portion 33 from the insulating gas of insulation nozzle 27 ejection, high-temperature gas pressure is applied on the blade of a sword shape compression zone 27A, does following explanation with Fig. 2 to Fig. 6 about the gesture point that helps of the operating physical force of operator.
Each state that from Fig. 2 to Fig. 5, shows the portion that opens circuit; In addition, Fig. 6 shows corresponding to state A to the characteristic curve SA of each each state of stroke of movable side of the portion that opens circuit of D (from time point tA to tD), with the characteristic curve PS of the gas pressure of buffer unit compression, the movable switching line AC of the electric arc connector 24 of side.
At first, Fig. 2 is for dropping into the state of position, and each connector contact of the portion 20 that opens circuit this moment links together, and the blade of a sword shape compression zone 27A of insulation nozzle 27 is in compression plate 34 vicinity of hollow cylinder portion 33.At this moment, corresponding time point is tA in the A place of Fig. 6 in the input position of the portion 20 that opens circuit, because buffer unit is before action, the gas pressure that the characteristic curve PS of gas pressure shows does not rise, and electric arc connector 24 also is in closure state.
The movable side one of portion 20 of opening circuit among Fig. 3 becomes out limit state bounce cylinder 25 and moves downwards; Fixing and movable main connector 21,22 is separated; Electric arc connector 23,24 be in separated before state, follow the blade of a sword shape compression zone 27A that moves its front end of insulation nozzle 27 to leave the compression plate 34 of hollow cylinder portion 33.This state, among Fig. 6 since bounce cylinder 25 move to the portion of opening circuit 20 open limit B, this moment, the time corresponding point was tB, buffer unit compresses insulating gas, the gas pressure that the characteristic curve PS of gas pressure shows rises gradually.
Portion's 20 moving parts that open circuit among Fig. 4 are in the current interruption state, and bounce cylinder 25 moves to below more, and 23,24 one disconnection of electric arc connector just produce electric arc between the two, and at this moment, the insulating gas that is compressed by buffer unit is to arc spraying.The pairing time point tC of current trip point C in Fig. 6, at this moment, the gas pressure that the characteristic curve PS of gas pressure shows is cushioned the device compression because of insulating gas and sprays to the high temperature that electric arc produces it is risen rapidly.
The electric arc connector 23 of fixation side is followed moving of insulation nozzle 27; Insulating gas because of the injection temperation rising; Ejection in hollow cylinder portion 33, thus a part of gas from gaseous emission opening 35 to the container exhaust, owing to be provided with compression plate 34 exhaust meetings in the end and be suppressed.The insulating gas of high temperature is detained a period of time in hollow cylinder portion 33 can make internal pressure this pressure that sharply rises be added on the blade of a sword shape compression zone 27A, thereby the bounce cylinder 25 that moves is helped gesture, and its result is enhanced the operating physical force of operator.
Fig. 5 shows that the portion 20 that opens circuit is in off state, because the blade of a sword shape compression zone 27A of insulation nozzle 27 leaves from hollow cylindrical portion 33 fully, high-temperature insulation gas is arranged to container 10 (as shown in Figure 1) and insulating cylinder 30 rapidly.During the state of the corresponding off position D of time point tD, be the insulating gas exhaust process among Fig. 6, gas pressure reduces shown in the characteristic curve PS of gas pressure rapidly.
As stated, be provided with blade of a sword shape compression zone 27A at the front end of insulation nozzle 27, and blade of a sword shape compression zone 27A can move joint to hollow cylinder portion 33 directions with compression plate 34.The insulating gas that sprays in the hollow cylinder portion 33 can be detained a period of time, therefore, internal pressure is risen.The internal pressure that in hollow cylinder portion 33, rises is the moving direction pressurization of the blade of a sword shape compression zone 27A of insulation nozzle 27 to bounce cylinder 25.Therefore, operator does not lose the opening performance of the portion of opening circuit, and with the original operator that can use the little miniaturization of operating physical force of comparing, thereby can produce more miniaturization, lightweight, economic product.
Buffer type gas isolator of the present invention is because being used for being changed by near the structure the front end of the insulation nozzle of the insulating gas of buffer unit compression to the arc spraying between the fixing and movable electric arc connector; And the gas after the arc spraying is applied flexibly, thereby help gesture can increase breaking velocity to the direction that opens circuit when making current interruption.Therefore, buffer type gas isolator can not make the opening performance of the portion of opening circuit impaired simultaneously with the little operator of operating physical force, so be suitable for producing the product of more miniaturization, lightweight, economy.
Claims (2)
1. buffering gas insullation circuit breaker; In the container of filling insulating gas, dispose at least: the electric arc connector of fixing and movable main connector, fixation side and movable side, the insulating gas that compresses with said buffer unit when having the buffer unit of bounce cylinder and piston and having when current interruption spray to the portion that opens circuit of the insulation nozzle of electric arc between said electric arc connector; It is characterized in that: the front end of said insulation nozzle is formed with blade of a sword shape compression zone; This blade of a sword shape compression zone is at right angles crooked laterally by said insulation nozzle front end; Be provided with said blade of a sword shape compression zone within it side shifting and with the hollow cylinder portion of the electric arc connector concentric arrangement of said fixation side; Said hollow cylinder portion is provided with the compression plate that forms gas discharge hole at the opposition side of insulation nozzle; The insulating gas that sprays to electric arc stays for some time between the compression plate of the blade of a sword shape compression zone of said insulation nozzle and said hollow cylinder portion, and high temperature and high pressure gas pressurizes to said blade of a sword shape compression zone.
2. buffering gas insullation circuit breaker according to claim 1; It is characterized in that: the axial dimension of said hollow cylinder portion does; When the action of opening circuit of the portion of opening circuit is initial; The blade of a sword shape compression zone of said insulation nozzle is positioned at hollow cylinder portion, and, before reaching off position, leave hollow cylinder portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-306676 | 2007-11-28 | ||
| JP2007306676 | 2007-11-28 | ||
| JP2007306676A JP2009129867A (en) | 2007-11-28 | 2007-11-28 | Puffer type gas insulation circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101447368A CN101447368A (en) | 2009-06-03 |
| CN101447368B true CN101447368B (en) | 2012-07-04 |
Family
ID=40742961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101803223A Expired - Fee Related CN101447368B (en) | 2007-11-28 | 2008-11-24 | Buffering gas insullation circuit breaker |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2009129867A (en) |
| KR (1) | KR20090055493A (en) |
| CN (1) | CN101447368B (en) |
| TW (1) | TW200933679A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101276945B1 (en) * | 2011-12-22 | 2013-06-19 | 엘에스산전 주식회사 | Puffer cylinder assembly for gas-type circuit breaker |
| WO2015008515A1 (en) * | 2013-07-19 | 2015-01-22 | 株式会社日立製作所 | Gas circuit breaker |
| CN105702521B (en) * | 2015-12-24 | 2018-08-10 | 上海固缘电力科技有限公司 | A kind of processing technology of solid insulation permanent magnetic vacuum breaker |
| WO2019150550A1 (en) * | 2018-02-02 | 2019-08-08 | 株式会社東芝 | Gas circuit breaker |
| JP7135199B2 (en) * | 2019-03-19 | 2022-09-12 | 株式会社東芝 | gas circuit breaker |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52139965A (en) * | 1976-05-19 | 1977-11-22 | Hitachi Ltd | Buffer gas breaker |
| FR2576144B1 (en) * | 1985-01-16 | 1987-02-06 | Alsthom Atlantique | HIGH VOLTAGE, COMPRESSED GAS, LOW-ENERGY CIRCUIT BREAKER |
-
2007
- 2007-11-28 JP JP2007306676A patent/JP2009129867A/en active Pending
-
2008
- 2008-11-05 TW TW097142592A patent/TW200933679A/en unknown
- 2008-11-24 CN CN2008101803223A patent/CN101447368B/en not_active Expired - Fee Related
- 2008-11-27 KR KR1020080118577A patent/KR20090055493A/en not_active Application Discontinuation
Non-Patent Citations (2)
| Title |
|---|
| JP昭52-139965A 1977.11.22 |
| JP昭61-168827A 1986.07.30 |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200933679A (en) | 2009-08-01 |
| CN101447368A (en) | 2009-06-03 |
| JP2009129867A (en) | 2009-06-11 |
| KR20090055493A (en) | 2009-06-02 |
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Granted publication date: 20120704 Termination date: 20141124 |
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