• 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:
    An apparatus and a method for quenching an arc in a gas flow circuit breaker having both a permanent current contact and an arc contact system, wherein the motion of the contacts is made current dependent, thereby delaying or accelerating the duration of the opening of the contacts of the arc contact system as a function of the current so as to shorten the arc duration and correspondingly to increase the quenching capacity of the breaker.
    公开号:SU1005672A3
    申请号:SU772557998
    申请日:1977-12-21
    公开日:1983-03-15
    发明作者:Хертц Вальтер；Штро Ян
    申请人:Сименс Аг (Фирма)；
    IPC主号:
    专利说明:

    (54) DEVICE FOR ELIMINATING ELECTRICAL
    one
    BACKGROUND OF THE INVENTION The invention relates to devices for extinguishing an arc in high-voltage gas-blown switches.
    Known high-voltage switches with devices for extinguishing electric blast, containing arcing of the fixed contact and a movable contact connected to the actuator {1.
    The extinguishing capacity of such high-voltage circuit breakers is to a great extent. depends on the energy released in the process of shutting down in a quenching system through an electric arc. This energy must be discharged by a flow extinguishing agent. The less energy is released, the easier it is to turn on. The converted energy can be reduced by reducing the duration of the electric arc, and thus, accordingly, increase the damping. switch ability. The damping capacity can also be increased by adjusting the speed of the contacts, but c. contact system of high voltage and high current such a possibility. CIRCUITS
    The requirements for the mechanical and mechanical part of the switch are not.
    The aim of the invention is to increase the damping capacity of a gas blown 5 switch with separate current paths for a continuous load current and a current in an electric arc by shortening the duration of electric arc burning.
    This goal is achieved by the fact that JO in a device for extinguishing an electric arc in a gas blast switch containing an arresting fixed contact and a moving contact connected to the drive, the moving contact is provided with an additional (5 inductive drive with an inductor, connected in series current arc contacts, with induction disk, which is connected to a fixed contact, equipped with a spring-.20 and.
    A limiting element made in the form of a resistor or inductance coil is iodized to the induction drive coil.
    权利要求:
    Claims (3)
    [1]
    The drawing shows a variant of the design of the device, the transverse section. A device for extinguishing an electric arc in a gas blown circuit breaker, such as an arc-extinguishing piston switch, contains a nozzle system, including the mouth of the nozzle 1, the nozzle 2 made of insulating material, the first electrode 3. of the continuous load and the piston 4 moving in the slide cylinder 5 The continuous current electrode 3 with the nozzle 2 and the pressure 4 is rigidly connected to the electrode 6. Limited by the pressure 4, as well as the sliding cylinder 5 and the electrode 6, the compression chamber can be closed off by a flange through which A tubular electrode 6 passes through the seal. Another current contact 7 is connected to the contact 3 of the continuous load current - a continuous load placed in the inner wall of the cylinder 8. The cylinder 8 through the flange 9 is adjacently connected to the movable electrode 10, which, preferably, can also be tubular and passes at the mouth of the electrode 6. The electrodes 6 and 10 are provided to form an arc current path and are arranged to be displaced relative to each other. The electrode 6 is equipped with a drive (not shown), which can be performed in a known manner. The electrode 10 is connected to an additional drive 11, for which an induction drive, especially a magnetic dynamic drive, is preferably used. This drive includes a magnetic coil 12, triggered as an induction ring 13, and a spring 14. Acting on the principle of a Thomson ring, the induction ring 13 as a flange is fixed to the hollow electrode 10. The roller 12, one end of which through the sliding contact 15 must to be connected to the electrode 10, and the second end (not shown) with the flange 9 or through the cylinder 8c with the contact of the current of continuous load 7 when current passes through it, induces eddy currents in the induction washer 13. The terminal 9 is isolated from the electrode 10 by the insulator element 16. Under the influence of adjustable force, the spring 14 holds the movable electrode in the normal position until a switchable current flows through the coil 12. To turn off the current, a drive system (not shown) of electrode 6 is activated, which mixes the gooseneck) from the mouth of the nozzle 1 of the electrode, the arc-shaped head in the axial direction of the sliding electrode, as indicated by arrow A. As a result, By connecting channel 17 to the cavity of the nozzle 18, the gf dp is damped by sensation, preferably sulfur hexafluoride Sf, is compressed. In this case, the current path between the electrodes 3 and 7 of the continuous load current is first interrupted, and the current to be shut off flows through the flange 9, the coil 12, the contact 15, the electrode C) and the electrode 6. When the current is below a given value, the electrode 10 is held by the spring 14 in the normal position (see - drawing). In this case, pre-compression of the gas for extinguishing by blowing continues until the mouth 19 of the electrode 10 leaves the nozzle 1 of the electrode in the direction of the arrow. B. Then, galvanic opening of contacts 6 and 10 occurs, and an electric arc stings between the mouth of the nozzle 1 and the mouth 19. At the same time, compressed gas is supplied to the compression chamber through the flow channels or the flow channel 17 into the cavity of the nozzle 18 into the quench chamber 20 to extinguish the arc, and when the current passes through zero, extinguishes it. The gas flow shifts the base of the electric arc with a decreasing current at the mouth of the nozzle 1 of the electrode and directs along the electrode 10. If the current exceeds a predetermined amount, the current drives an additional drive 11. When the current is switched through the coil 12, a corresponding change in the magnetic flux occurs in it as a result, eddy currents arise in the induction washer 13, creating a repulsive force between the coil and the induction washer. Under the influence of this force on the induction washer 13, the electrode 10 is given acceleration in the direction of the arrow A, i. E. in the direction of movement of the electrode 6.t In this case, the spring 14 is compressed, the electrode 10 is fed downward by a stroke length, indicated by the letter a. As a result of this additional movement of the electrode 10, the instant of galvanic opening of the electrodes 6 and 10, and consequently, the formation of an electric arc is slowed down. The mass of the electrode 10 in combination with the force of the spring 14 is calculated so that the reverse movement of the induction washer provided by the spring 14 to the normal position occurs only after the arc is extinguished. The force providing accelerated movement of the electrode 10 depends on the oi of the rate of change of current (dl / dt) when the current is switched from the continuous current path to the current path in the electric arc. This force acts only in a period of time that is less than a half-cycle of current. The actuator 11 operates only during this period of time and accelerates the movement of the electrode 10, which 51 then moves in accordance with the laws of the mechanical system, i.e. the electrode 10 and the spring 14. The resultant inductive force due to the formation of eddy currents Neither between coil 12 and induction washer 13 decays quickly. Therefore, a change in the strength of the switched off current, which, when passing through the zero, reaches its maximum value, after the start of movement of the electrode 10 has no effect on its further movement. The coil 12 may have one or several turns. The calculation of its parameters depends on the magnetic force required for acceleration of the electrode 10 and the instantaneous value of the current to be switched off, starting from which a slowing down of the galvanic opening of the electrodes 6 and 10 and, consequently, the slowing of the formation of an electric arc, should occur. In the most preferred embodiment of the device, at least one ferromagnetic insert is placed in the annular spaces p of coil 12, thereby achieving an increase in the magnetic force acting on the induction washer 13. Under appropriate conditions in the current path in an electric arc in the supply line to the coil, it is advisable put a current limiting element, such as resistance. In some cases of switching off, the converted energy is less important than the possibility of reaching the minimum arcing contact solution as soon as possible. For this a. Drive, the electrode 11 of the electrode 10 is positioned in such a way that the acceleration of the electrode 10 is connected in the direction opposite to arrow B. In the simplest way this is achieved by placing the coil 12 and the induction washer 13 above the flange 9. In this case, accordingly, the arrangement should be changed springs 14; With this arrangement, the magnetic force acts on the index washer 13 in the direction of the arrow B. Claims 1. Device for extinguishing an electric arc in a gas blow switch that contains arcing fixed contact and a moving contact connected to a drive characterized in that increasing damping capacity by reducing the duration of the arc, the moving contact is equipped with an additional induction drive, which contains an inductor connected in series to the current circuit suppressive contacts, with an induction disk, which is connected to a mobile -contact, equipped with a spring.
    [2]
    2. The device according to clause I, which is the fact that a limiting element is connected to the induction-drive roller.
    [3]
    3. The device according to claim 2, that is, so that the limiting element is made in the form of a resistor or inductance coil. Sources of information taken into account during the examination 1. Patent of Germany N «241561,. H 01 H 33/91, 1975.
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    GB1264756A|1972-02-23|
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    US4435627A|1984-03-06|High tension circuit breaker
    同族专利:
    公开号 | 公开日
    BR7708501A|1978-08-08|
    SE7713880L|1978-06-23|
    DE2658235A1|1978-07-06|
    IT1088822B|1985-06-10|
    GB1590927A|1981-06-10|
    NL7712342A|1978-06-26|
    CH624241A5|1981-07-15|
    FR2375710A1|1978-07-21|
    FR2375710B1|1981-09-18|
    US4221942A|1980-09-09|
    JPS5380572A|1978-07-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4217232A1|1992-05-20|1993-11-25|Siemens Ag|Electrical high-voltage power switch - has compression system for quenching gas with cylinder floors made of material with good electrical conductivity|
    RU2665694C1|2015-12-17|2018-09-04|ЧАЙНА ЭксДи ЭЛЕКТРИК КО., ЛТД|Automatic arcing camera for increasing effect of thermal expansion|GB1459727A|1974-09-17|1976-12-31|Siemens Ag|Electrical gas-blast circuit breaker|FR2456380B1|1979-05-05|1986-02-07|Licentia Gmbh|AUTOMATIC SWITCH WITH PNEUMATIC AND GAS PRESSURE CONTROL FOR ARC EXTINGUISHING|
    CH645204A5|1979-05-25|1984-09-14|Bbc Brown Boveri & Cie|ELECTRIC SWITCH FOR LARGE CURRENTS.|
    DE3160402D1|1980-05-07|1983-07-14|Bbc Brown Boveri & Cie|High tension circuit breaker|
    CH654950A5|1980-07-18|1986-03-14|Bbc Brown Boveri & Cie|HIGH VOLTAGE CIRCUIT BREAKERS.|
    KR910003436B1†|1987-10-05|1991-05-31|미쓰비시전기 주식회사|Arc-extinguishing of switch|
    DE4402935A1|1994-02-01|1995-08-03|Abb Patent Gmbh|Contact system for a high-voltage circuit breaker|
    DE19711991C1|1997-03-14|1998-06-10|Siemens Ag|High-voltage arc-quench circuit breaker|
    IT1295375B1|1997-10-21|1999-05-12|Sace Spa|MEDIUM AND HIGH VOLTAGE GAS SWITCH WITH ARC EXTINGUISHING MEANS|
    EP3044799B1|2013-10-25|2019-04-24|Siemens Aktiengesellschaft|Separator unit with electromagnetic drive|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19762658235|DE2658235A1|1976-12-22|1976-12-22|METHOD AND DEVICE FOR EXTINGUISHING AN ARC IN A GAS FLOW SWITCH|
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