• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The quenching gas flow is produced by a compression device during switching off. The quenching gas in the circuit breaker is compressed in a compression chamber (2) by the face (1a) of a differential piston (1). The high compression causes the quenching gas to flow in the direction of the light arc. At least part of the quenching gas, heated by the light arc, is expanded in a quenching gas expansion chamber (6). Thus the other face (1b) of the piston ana at least a part of the chamber boundary (6a) are moved apart. This fraction of the quenching gas is drawn off towards the end of the switching off from the expansion chamber to the quenching chamber of the circuit breaker surrounding the compression and expansion chambers.
    公开号:SU967285A3
    申请号:SU772470212
    申请日:1977-04-18
    公开日:1982-10-15
    发明作者:Рагаллер Клаус
    申请人:Ббц Аг Браун Бовери Унд Ко (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to switching devices, in particular to electric compression switches.
    Known electrical compression switch containing contacts located in the body of the arcing chamber, and the housing of the compression chamber of the arcing means with a differential piston with two stages of large and smaller diameter | j J
    The aim of the invention is to increase efficiency by using the thermal energy of the compressor arc.
    This goal is achieved by the fact that in the electric compression switch one of the contacts is tubular and nozzle-shaped and connects the arcing chamber to the arcing chamber, the compression chamber housing is made in the form of a guide for the smaller diameter of the differential piston and is equipped with a limiter for the end part of the differential piston and the body of the arcing chamber is made in the form of a guide for the larger diameter of the differential piston, and its δ bottom serves as a limiter for more th stage of the differential piston.
    The differential piston is made tubular, and the nozzle-shaped contact is equipped with a fixing element, with the aid of which it is fixed on the body of the arcing chamber, and holes are made in the body of the compression chamber.
    The step of the smaller diameter of the differential piston and the body of the arc chamber 5 are connected to at least one of the contacts.
    In an electric compression switch, the outer diameter of the tubular nozzle contact is smaller than the inner diameter of the casing of the arc chamber, and its inner diameter is smaller than the inner diameter of the compression chamber.
    The electric switch is equipped with a 5 check valve, which is installed at the end of the differential piston of a larger diameter step.
    Electric switch provided with a compression return valve which is arranged in the end part of the differential piston 5 differentiation smaller diameter step.
    In FIG. 1 shows a switch, section; in FIG. 2 - the same with valves; in FIG. 3 - the same, with the stationary differential piston in the on state; in FIG. 4 - the same, included with a passing switching arc; in FIG. 5 - the same, in the off state 15 Piston 1 has a differential part 2 with an end face of the NW between the nozzle contact part 3 facing the switching arc 4 and the insulating nozzle 5, and the contact 20 step 4 is attached with the 'fixing elements 6 to the end 7. insulating nozzle 5. The other end 8 of the insulating nozzle 5 is connected to the limiter 9 of the expansion space (W. Part 2 of the piston 10 is sealed in qpnocTH of the limiter 9, and the insulating nozzle 5 is freely located inside. The switch operates as follows.
    In the case of a stationary differential piston 1, on the contrary, the elements 4, 6, 7 and 9 connected to each other are jointly movable along the serving guide of the differential piston in the direction of the central axis. Differential pore / 5 shen 1 by the spring drive is moved in the direction of arrow A. Whether or independently from the movement of the piston pin 11 is moved in the direction of arrow B, than 40 pri- directions of arrows A and B coincide.
    Due to the displacement in the direction of ^ the arrow A in the compressor space 12 extinguishing means with an initial 45 pressure P o is compressed to an elevated pressure P 6 + P k, wherein the quenching agent in an adjacent space at an initial pressure 'P Q prosredstvom differential piston vytesnyaot50 Xia through holes 13 into the surrounding space with pressure P ^. As soon as contact 11 disengages from contact 4, a switching arc is stretched between them and at the same time 55, the compressed extinguishing means from the space 12 acts in the form of a flow on the arc. In this case, the thermal energy of the blown or blown arc falls in the direction of low pressure, as a result of which in the expansion space there will be an increased working pressure P o + P k . Since the system of elements 4, 6, 7, and 9 is stationary, the differential piston is set in motion by the force that occurs when the area of the larger end surface of the piston and the pressure P ^ + interact. At the end of the flow of the quenching agent, the openings 13 open by means of the valves 14, and the increased pressure is discharged into the environment. environment, therefore, the heated extinguishing agent cannot rush into the arc zone. If the piston 1 is stationary, and the elements 4, 6, 7 and 9 are movable by means of a drive in the direction of arrow B (Fig. 3), then the process goes in the opposite direction.
    Since the piston 1 is stationary, the increased pressure P o + P ^ in space (Y affects the flange 15 of the stop 9 'when the stop itself or the elements 4, 6, 7 and 9 in the direction of arrow B.
    To prevent excessive pressure (compared with the environment) in the expansion space, a check valve 14 and a check valve 16 are provided (Fig. 3)
    The piston by means of a locking rod 17 is fixedly mounted on the lid of the chamber 18, and an insulating cylinder 20 is placed between the covers 18 and 19.
    The drive of the circuit breaker is represented by an insulating rod 21, which, when turned off, moves in the direction of arrow B so that the switch parts 4, 6, 7 and 9 move in the same direction.
    The compressor space 12 is closed by means of a rigidly fixed, imperishable contact 14, while the piston opens the compressor space 12. The auxiliary space 22 is connected through openings 13 to the blanking chamber 23.
    The expansion space (The quenching means together with the cavity 24 of the nozzle-shaped contact has the smallest volume (in contrast to the quenching chamber 23), the auxiliary space 22, like the space 23, is closed, in the cavities 12, <V and 23 the pressure Po.
    967285 6
    During compression of the extinguishing agent located in the circuit breaker, as well as when the latter is discharged in the form of a stream, the thermal energy of the switching arc coming to the low pressure side of the stream contributes to the maximum degree of compression or support of the drive, made, for example, in the form of a spring drive.
    In this case, the compressor space of the quenching agent, the channel for the quenching agent with increasing pressure, as well as the expansion space of the quenching agent can be made in various ways. So, for example, a piston compressing the quenching agent may interact with. separately located relative to the contacts and the insulating nozzle compressor space, while 20 the compressor space with the piston can be located asymmetrically * relative to the contacts. The expansion space of the quenching agent can be located independently of the $ 2 ^ insulating nozzle, and the supply for the quenching agent warmed up by the switching arc can be done differently, and the heat energy obtained in the form of pressure increase 30 should be supplied to the expansion space of the quenching agent by means of a feeder, if possible lossless.
    权利要求:
    Claims (3)
    [1]
    (5) ELECTRIC COMPRESSION BREAKER The invention relates to switching devices, in particular to electric compression switches. An electrical compression switch is known that contains contacts located in an arcing chamber case and an arrays of an extinguishing agent with a differential piston with two stages. Large and smaller diameter p 3 The purpose of the invention is to increase efficiency by utilizing the thermal energy of the compressor arc. The goal is achieved by the fact that in the electric compression switch one of the contacts is tubular and nozzle-shaped and connects the arc chamber with the arc chamber, the body of the compression chamber is designed as a guide for a smaller diameter of the differential piston and is equipped with a limiter for the end part the differential piston, and the case of the arcing chamber is made as a guide for a larger diameter of the differential piston, and its bottom serves as a stop for th stage of the differential piston. The differential piston is tubular, and the nozzle-shaped contact is provided with a fixing element, with which it is fixed to the housing of the arcing chamber, and holes are made in the housing of the compression chamber. A smaller diameter stage of the differential piston and the arcing chamber case are connected to at least one of the contacts. In the electric compression switch, the external diameter of the tubular nozzle-shaped contact is made smaller than the internal diameter of the housing of the arc-quenching chamber, and its internal diameter is smaller than the internal diameter of the compression chamber. The electrical switch is equipped with a check valve, which is installed at the end of the differential piston of a larger diameter stage. The electric compression switch is equipped with a check valve, which is located in the front part of the differential piston of a smaller diameter stage. FIG. 1 shows a switch, a cut; Fig 2 is the same with valves; in fig. 3 the same, with a fixed differential piston in the on state; in fig. C - 7o, included with the incoming switching arc; in fig. 5 is the same in the switched off state i: The piston 1 has a differential part 2 with an end surface O1 between the part 3 of the nozzle-shaped contact C and the insulating nozzle 5, which is attached to the switching arc, and the contact k is attached with fixing elements 6 to the end of the 7. insulating nozzle 5. The other end 8 of the insulating nozzle 5 is connected to the limiter 9 of the expansion space e. Part of the piston 10 is hermetically sealed in the grip of the restrictor 9, and inside is freely located the insulating nozzle 5 The switch works as follows. In the case of a fixed differential piston 1, the elements k, 6, 7, and 9, which are connected with each other, are movable along the guide differential piston in the direction of the central axis. Differential nop Shen 1 is moved in the direction of arrow A. by means of a spring drive. Independently or dependently on this movement of the piston, the contact 11 moves in the direction of arrow B, and the directions of arrows A and B coincide. Due to the displacement in the direction of the arrow A in the compressor space 12, the extinguishing agent with the initial pressure PO is compressed to the increased pressure P + P, while the extinguishing agent in the adjacent space with the initial pressure r P is projected by the differential piston surrounding space with pressure P ,. As soon as the contact 11 gets out of the engagement with the contact k, between them the switching arc and the simultaneously suppressed extinguishing means from the space 12 in the form of a stream act | On the arc. In this case, the thermal energy of the blown or blown arc falls in the direction of low pressure, as a result, there will be an increased working pressure in the expansion space PO Рц. Since the system of elements k, d 7 and 9 is stationary, the differential piston is set in motion by the force that occurs when the area of the larger end surface of the piston interacts with the pressure Pfj + P. At the end of the extinguishing agent flow, through the valves} k, the openings 13 are opened, the increased pressure is discharged into the surrounding. therefore, the heated extinguishing agent cannot rush into the arc zone. If the piston 1 is stationary, and the elements j, 6, 7, and 9 are movable by means of a drive in the direction of arrow B (Fig. 3), then the process goes in the opposite direction. Since the piston 1 is stationary, the increased pressure PQ + P in space (Y affects the flange 15 of the stopper 9 when the stopper itself or elements 6, 7 and 9 move in the direction of the arrow B. To prevent excessive (compared to the surrounding) pressure in the expansion valve a check valve 14 is provided in the space, as well as a check valve 16 (FIG. 3). The piston is fixedly mounted on the lid of the chamber 18 by means of a fixing rod 17, and an insulating cylinder 20 is placed between the lids 18 and 19 by turning off the rod 21, which, when turned off, moves in the direction of arrow B so that the switch parts 4, 6, 7 and 9 move in the same direction. Compressor space 12 is covered by a rigidly fixed, imperishable contact Il, while the piston opens the compressor space 12. Auxiliary space 22 is connected through openings 13 to quench chamber 23. Expansion space f of damping means, together with a cavity 24 of nozzle-shaped contact, has the smallest volume (and differs from quench chamber 23), auxiliary space 22, like space 23, is closed, and into cavity 12, and 23 is pressure PO. When compressing an extinguishing agent located in a switch, as well as when the latter is discharged as a flow, the heating energy of the switching arc that flows to the low pressure side of the flow contributes to the maximum degree of compression or support of the drive, for example, in the form of a spring drive. ; At the same time, the compressor space of the extinguishing means, the channel for the gas: with the increasing means with increasing pressure, as well as the expansive simplicity of the extinguishing means can be made in different ways. For example, a piston compressing damping means can interact with a compressor space located separately relative to the contacts and an insulating nozzle, while the compressor space with the piston can be located asymmetrically relative to the contacts. The expansion space of the damping means can be located independently of the insulating nozzle, and the supply for the heated switching arc of the damping means can be made; otherwise, the heat energy received in the form of an increase in pressure must be supplied to the expansion space of the damping means by means of a feeder whenever possible without losses. Claim 1. Electrical compression switch, containing contacts located in the housing of the arcing chamber, and housing of the compression chamber of an arc-suppressing means with a differential piston with two steps more; one and smaller diameter, about one and. and so that, in order to increase efficiency by using thermal energy of the compressor arc, one of the contacts is tubular and nozzle-shaped and connects the arc chute with the arc chute compression chamber, as a guide for a smaller diameter differential piston and provided with a restriction for the front part of the differential piston, and the corus of the arc suppression chamber is designed as a guide for a larger diameter differential piston and its bottom serves as a restrictor for a larger differential piston stage. ;
    [2]
    2. The switch according to claim 1, that is, that the differential piston is tubular, and the nozzle-shaped contact is provided with a locking element, with which it is fixed to the housing of the arcing chamber, and holes are made in the housing of the compression chamber. .
    [3]
    3. The switch according to claim 2, which is tactile in that a step of smaller diameter of the differential piston and the housing of the arcing chamber are connected to at least one of the contacts. k. A switch according to claim 1, wherein the external diameter of the tubular nozzle-shaped contact is made smaller than the internal diameter of the arcing chamber, and its internal diameter is smaller than 1 the internal diameter of the compression chamber. 5. A switch according to item C, characterized in that it is provided with a check valve, which is installed at the end of the differential piston of a stage of a larger diameter. 6. Highlighter for l. 2, which is equipped with a check valve, which is located in the front part of the differential piston of a smaller diameter stage. Information sources, ; 1rin Tyo into account during the examination 1. The patent of If If 519238. Switzerland. H 01 H 33/75, 1971.
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    类似技术:
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    US4182942A|1980-01-08|Puffer-type gas-blast circuit breaker
    US5001314A|1991-03-19|High tension circuit-breaker having a dielectric gas under pressure
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    US3943314A|1976-03-09|Motion-multiplying linkage-mechanism for sealed-casing structures
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    CA1096914A|1981-03-03|Circuit interrupter comprising plural arc-quenching fluid pressure chambers
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    CA1087232A|1980-10-07|Puffer-type gas blast electrical switch
    JP2563856B2|1996-12-18|Medium voltage circuit breaker
    JP2528100B2|1996-08-28|Patch type gas circuit breaker
    US5373131A|1994-12-13|Puffer circuit-breaker with two concentric interrupting chambers
    同族专利:
    公开号 | 公开日
    DE2620675C3|1981-05-07|
    DE2620675A1|1977-11-03|
    FR2349205A1|1977-11-18|
    FR2349205B1|1982-01-08|
    DE2620675B2|1980-08-07|
    IT1075470B|1985-04-22|
    DE7614806U1|1978-02-16|
    SE7704407L|1977-10-23|
    JPS52129976A|1977-10-31|
    CH600538A5|1978-06-15|
    HU181654B|1983-10-28|
    BR7702509A|1978-02-28|
    JPS622419B2|1987-01-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE524904C|1929-02-28|1931-05-20|Sachsenwerk Licht & Kraft Ag|Oil switch, in which the pressure that occurs during the shutdown process is used to generate an oil flow directed against the arc to extinguish the arc|
    GB378471A|1931-05-09|1932-08-09|Electr & Allied Ind Res Ass|Improvements relating to electric switches or circuit breakers|
    US2196919A|1938-08-06|1940-04-09|Harold J Hirschey|Safety device for hydraulic brake systems|
    US2447950A|1945-04-03|1948-08-24|Westinghouse Electric Corp|Circuit interrupter|
    US2572406A|1948-09-02|1951-10-23|Stulz Charles|High-voltage oil circuit breaker|
    US2933575A|1956-10-22|1960-04-19|Westinghouse Electric Corp|Circuit interrupters|
    US2957063A|1958-03-07|1960-10-18|Westinghouse Electric Corp|Pumped-gas circuit interrupter|
    FR1288567A|1960-05-06|1962-03-24|Reyrolle A & Co Ltd|Improvements to switches incorporating an arc blowing device|
    FR2061975A5|1969-10-06|1971-06-25|Merlin Gerin|
    CH519238A|1970-07-17|1972-02-15|Bbc Brown Boveri & Cie|Electric compression switch|DE2710051A1|1976-06-24|1978-01-05|Sprecher & Schuh Ag|PRESSURE GAS SWITCH|
    CH625908A5|1978-03-30|1981-10-15|Sprecher & Schuh Ag|
    DE3469098D1|1983-11-15|1988-03-03|Sprecher Energie Ag|Compressed gas circuit breaker|
    FR2576142B1|1985-01-16|1987-12-24|Alsthom Atlantique|HIGH VOLTAGE CIRCUIT BREAKER, COMPRESSED GAS, HANDLING ENERGY ASSISTED BY THE ARC THERMAL EFFECT|
    FR2576144B1|1985-01-16|1987-02-06|Alsthom Atlantique|HIGH VOLTAGE, COMPRESSED GAS, LOW-ENERGY CIRCUIT BREAKER|
    FR2576143B1|1985-01-16|1987-12-24|Alsthom Atlantique|HIGH-VOLTAGE, COMPRESSED GAS, CIRCUIT BREAKER ASSISTED BY THE ARC THERMAL EFFECT AND WITH DOUBLE MOTION|
    FR2596575B1|1986-03-26|1988-05-20|Alsthom|DIELECTRIC GAS CIRCUIT BREAKER UNDER PRESSURE|
    FR2641409B1|1989-01-02|1996-04-26|Alsthom Gec|HIGH AND MEDIUM VOLTAGE CIRCUIT BREAKER WITH SUPPLY GAS|
    FR2646013B1|1989-04-17|1996-02-23|Alsthom Gec|MEDIUM VOLTAGE CIRCUIT BREAKER|
    AT140100T|1992-02-06|1996-07-15|Gec Alsthom T & D Ag|EXHAUST GAS SWITCH|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH503076A|CH600538A5|1976-04-22|1976-04-22|
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