• 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 invention relates to electrical engineering. Parallel to the gas discharge device, a voltage sensor is turned on, both outputs of which are connected to the inputs of the independent control pulse forming unit. Between the intermediate terminal of the primary winding of the saturating transformer and the positive terminal of the rectifier, there are connected in series a choke and a diode, the anode of which is connected to the intermediate terminal of the specified transformer winding. This achieves the same efficiency of use of a gas discharge device for carrying out the process at various values of the discharge current. 1 il.
    公开号:SU1536467A1
    申请号:SU857774058
    申请日:1985-12-20
    公开日:1990-01-15
    发明作者:Минчо Савов Минчев；Светослав Александров Савов；Емил Илиев Кръстев
    申请人:Вмеи "Ленин" (Инопредприятие)；
    IPC主号:
    专利说明:

    The invention relates to a device for extinguishing an arc in a gas discharge device used for carrying out the technological process when processing the surfaces of parts in mechanical engineering.
    A device is known for extinguishing an arc in a gas discharge device, which consists of a rectifier, in parallel to which a gas discharge device and a series circuit composed of a capacitor and the primary winding of a saturable transformer are connected through a choke, to the intermediate terminal of which the positive pole of the rectifier is connected a thyristor, a cathode which is connected to the intermediate terminal. The input of the control pulse shaping unit is connected to the secondary winding of the saturating transformer, both outputs of which are respectively connected to two outputs of the independent control pulse shaping unit and, respectively, to the control electrode and the thyristor cathode (see auth. St. URB U 22590, cells C 23 C 15/00, 1977).
    The disadvantage of this device lies in the lack of efficiency of its use due to the fact that the time from the moment the thyristor is turned off to the moment the glow discharge is excited has a variable value and depends on the size of the discharge current, and large values of this current correspond to small values of the discharge current and vice versa.
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    The purpose of the invention is to create a device for extinguishing arc discharges in a gas discharge vessel for carrying out a technological process that has the same efficiency when used to work with both small and close to nominal values of throttle through a gas discharge device.
    The drawing shows a schematic diagram of a device for extinguishing an arc in a gas discharge device for carrying out the technological process.
    A device for extinguishing an arc in a gas discharge device consists of rectifier 1, in parallel with which through a first choke 2 a gas discharge device 3, a voltage sensor 4 and a series circuit composed of the primary winding of a saturable transformer 5 and a capacitor 6 are connected. To the intermediate terminal of the primary winding the saturable transformer 5 and the positive pole of the rectifier 1 are connected in parallel to the thyristor 7 and a series circuit from diode 8 and the second droplet 9, with the cathode of the thyristor 7 and the anode of diode 8 connected to clarify the conclusion. The input of the control pulse shaping unit 10 is connected to the secondary winding of the saturating transformer 5. Both outputs of the voltage sensor 4 are connected to two inputs of the independent control pulse shaping unit 11, both outputs of which are connected respectively to the control electrode and the cathode of the thyristor 7 and to two outputs control pulse shaping unit 10.
    The action of the device for extinguishing the arc in the gas discharge device for carrying out the technological process is as follows.
    Under the action of the rectifier 1, an electric glow discharge is excited in the gas discharge device 3. The capacitor 6 starts to charge, and the magnetic circuit of the saturable transformer 5 becomes saturated during the charging time of the capacitor 6 to a negative value of the saturation induction. When in the gas discharge device 3 the electric glow discharge spontaneously begins to turn into an arc, the voltage between the anode and the cathode of the gas discharge device 3 begins to decrease, and on the primary winding of the saturating transducer
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    formatter 5, a voltage equal to the difference between the voltage of the capacitor 6 and the voltage between the anode and the cathode of the gas discharge device 3 is induced by the control impulse unit 10 in the secondary winding of the saturating transformer 5 and the thyristor 7 is turned on 7, the current through it is limited by the first choke 2. The voltage of the capacitor 6 is applied to the appropriate part of the primary winding of the saturable transformer 5 through the switched on thyristor 7. Then The anode and cathode of the gas discharge device 3 apply a reverse voltage, determined by the ratio between the windings of the two parts of the primary winding of the saturating transformer 5. This reverse voltage causes a change in the direction of the electric field in the gas discharge device 3, which contributes to the deionization process in the anode - anode - cathode of gas discharge device 3.
    Through the thyristor 7, the discharge current of the capacitor 6 and the current of the rectifier 1 to the cathode of the gas discharge device 3 of the primary winding of the saturable transformer 5 and the inductor 2 flow through, and the magnetic circuit of the saturable transformer 5 is re-magnetised from the negative value of saturation to its positive value. The part of the primary winding connected to the capacitor 6 with inductance under the saturated state of the magnetic circuit and the capacitor 6 form a fluttering circle in which the capacitor 6 is recharged to a voltage whose polarity is opposite to the original one (indicated in brackets in the drawing).
    Under the action of this voltage, the magnetic core of the saturating transformer 5 begins to re-magnetize from a positive value of the saturation induction to its negative value. A part of the primary winding connected to the capacitor 6 with inductance under the saturated state of the magnetic circuit and the capacitor 6 form a repetitive circle in which the capacitor 6 begins to recharge. The recharge current of the capacitor 6 flows through the thyristor 7 in the direction opposite to its direction of conduct, and after this current reaches and exceeds the amount of current through the thyristor 7, the latter turns off.
    Further, the recharging process proceeds with a constant duration, independent of the magnitude of the discharge current through the gas discharge vessel 3, and is determined only by the parameters of the fluttering circle consisting of the capacitor 6, the primary winding part of the transformer 5 connected to the capacitor 6 with the inductance in the saturated state of the magnet, the diode 8 and the second droplet 9. After the repeated recharge process ends, the voltage of the capacitor 6 continues to increase with the polarity equal to the initial value ystviem current flowing from the rectifier 1 via the condenser 6, the transformer primary winding and the first inductor 5 2.
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    The voltage build-up process is stopped until a glow discharge is excited in the gas discharge device 3. When the pre-set voltage value between the anode and the cathode of the gas discharge vessel 3 measured by sensor 4 is exceeded, the autonomous node for generating control pulses 11 turns on the thyristor 7, after what happens in the device are processes that are the same with the processes when the glow discharge spontaneously goes into the arc, than the gas discharge device is protected from a voltage greater than the nominal value that it is calculated. With the repeated spontaneous transition of the glow discharge in the arc and the repeated exceeding of the preset voltage value between the anode and cathode of the gas discharge device 3, the device is repeated.
    The advantages of the proposed device for extinguishing an arc in a gas discharge device for carrying out the technological process consist in an increased efficiency in its use due to the fact that
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    the time from the moment the thyristor is turned off until the moment when the glow discharge is excited is constant and does not depend on the magnitude of the discharge current, and there is a protective ability against overvoltages on the gas discharge device.
    It is recognized as an invention according to the results of the examination carried out by the Office for the Invention of the People’s Republic of Bulgaria.
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    权利要求:
    Claims (1)
    [1]
    Invention Formula
    A device for extinguishing an arc in a gas discharge device containing a rectifier, parallel to which a gas discharge device is turned on through a first choke, in parallel to which
    A series circuit comprising a capacitor and a primary winding of a saturable transformer is connected, between the intermediate terminal of which and the positive pole of the rectifier
    the thyristor is turned on, the cathode of which is connected to the indicated intermediate terminal of the primary winding of the saturable transformer, the terminals of the secondary winding of which are connected to the input
    a control pulse shaping unit made with two outputs, one of which is connected to one of the outputs of another autonomous control pulse shaping unit and a control electrode of said thyristor, and the other to the other of the outputs of the independent control pulse shaping unit and cathode This thyristor, characterized in that the outputs of the additionally introduced voltage sensor, both outputs of which are respectively connected to two
    the inputs of the said autonomous control pulse generation unit, and between the intermediate terminal of the primary winding of the saturating transformer and the positive terminal
    the rectifier includes an additionally introduced series circuit consisting of a diode and a second drossel, with the anode of the diode connected to the intermediate terminal of the indicated transformer winding
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    同族专利:
    公开号 | 公开日
    IN166604B|1990-06-09|
    HUT39276A|1986-08-28|
    BG41745A1|1987-08-14|
    HU199324B|1990-02-28|
    DE3579902D1|1990-10-31|
    EP0186865A3|1988-05-18|
    US4792730A|1988-12-20|
    EP0186865A2|1986-07-09|
    EP0186865B1|1990-09-26|
    YU198085A|1988-10-31|
    CS973185A1|1988-11-15|
    JPS61198595A|1986-09-02|
    CS266493B1|1990-01-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2297927B1|1975-01-17|1977-09-30|Anvar|
    BG22590A1|1975-10-10|1977-04-20|
    US4329627A|1976-02-02|1982-05-11|Esquire, Inc.|High frequency thyristor circuit for energizing a gaseous discharge lamp|
    BG29362A1|1979-03-11|1980-11-14|Minchev|Apparatus for chemical- thermal processing of matal articles in the condition of electrical smouldering charge|FR2648001B1|1989-05-31|1991-09-27|Breda Jean Pierre|DIRECT CURRENT SUPPLY OF PLASMA ELECTRODES AND METHOD FOR REGENERATING PLASMA|
    DE4127504A1|1991-08-20|1993-02-25|Leybold Ag|DEVICE FOR SUPPRESSING ARCES|
    DE4138794A1|1991-11-26|1993-05-27|Leybold Ag|Process and appts. for coating substrate - uses current source connected to cathodes in evacuated coating chamber|
    US5415757A|1991-11-26|1995-05-16|Leybold Aktiengesellschaft|Apparatus for coating a substrate with electrically nonconductive coatings|
    DE69322404T2|1992-09-30|1999-04-29|Advanced Energy Ind Inc Fort C|TOPOGRAPHICALLY ACCURATE THIN FILM COATING SYSTEM|
    US5718813A|1992-12-30|1998-02-17|Advanced Energy Industries, Inc.|Enhanced reactive DC sputtering system|
    US6217717B1|1992-12-30|2001-04-17|Advanced Energy Industries, Inc.|Periodically clearing thin film plasma processing system|
    WO1996031899A1|1995-04-07|1996-10-10|Advanced Energy Industries, Inc.|Adjustable energy quantum thin film plasma processing system|
    US5576939A|1995-05-05|1996-11-19|Drummond; Geoffrey N.|Enhanced thin film DC plasma power supply|
    US5917286A|1996-05-08|1999-06-29|Advanced Energy Industries, Inc.|Pulsed direct current power supply configurations for generating plasmas|
    JP3153482B2|1996-11-19|2001-04-09|旭光学工業株式会社|SLR camera preview device|
    JP3153483B2|1996-11-19|2001-04-09|旭光学工業株式会社|Control method of SLR camera with preview function|
    CH694983A8|2000-01-11|2006-03-15|Mitsubishi Electric Corp|Electric feeding unit for electric discharge surface treatment and method for electric discharge surface treatment.|
    US7305311B2|2005-04-22|2007-12-04|Advanced Energy Industries, Inc.|Arc detection and handling in radio frequency power applications|
    US8217299B2|2007-02-22|2012-07-10|Advanced Energy Industries, Inc.|Arc recovery without over-voltage for plasma chamber power supplies using a shunt switch|
    US8044594B2|2008-07-31|2011-10-25|Advanced Energy Industries, Inc.|Power supply ignition system and method|
    US8395078B2|2008-12-05|2013-03-12|Advanced Energy Industries, Inc|Arc recovery with over-voltage protection for plasma-chamber power supplies|
    EP2648209B1|2009-02-17|2018-01-03|Solvix GmbH|A power supply device for plasma processing|
    DE102010031568B4|2010-07-20|2014-12-11|TRUMPF Hüttinger GmbH + Co. KG|Arclöschanordnung and method for erasing arcs|
    US8552665B2|2010-08-20|2013-10-08|Advanced Energy Industries, Inc.|Proactive arc management of a plasma load|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    BG8468215A|BG41745A1|1984-12-29|1984-12-29|Device for discontinuing of arc dicharges in gas dicharge vessel|
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