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21. 发明申请

WO2019207611A1 ELECTRIC POWER METHOD FOR AN ELECTRIC FURNACE AND CORRESPONDING APPARATUS 审中-公开
公开(公告)号：WO2019207611A1
公开(公告)日：2019-10-31
申请号：PCT/IT2019/050082
申请日：2019-04-24
申请人： DANIELI AUTOMATION S.P.A. , DANIELI & C. OFFICINE MECCANICHE S.P.A.
发明人： GIGANTE, Enzo , PASUT, Federico , POLO, Andrea
IPC分类号： F27B3/28 , H02J3/18 , H05B7/144
摘要： Electric power method for an electric arc furnace (11), which provides to regulate the electric power frequency (fa) of a power voltage (Ua) and a power current (la) of the electrodes, independently from the mains frequency (fr).

22. 发明申请

WO2019207609A1 MELTING METHOD IN AN ELECTRIC ARC FURNACE AND CORRESPONDING APPARATUS 审中-公开
公开(公告)号：WO2019207609A1
公开(公告)日：2019-10-31
申请号：PCT/IT2019/050080
申请日：2019-04-24
申请人： DANIELI & C. OFFICINE MECCANICHE S.P.A. , DANIELI AUTOMATION S.P.A.
发明人： PATRIZIO, Damiano , MORDEGLIA, Antonello
IPC分类号： F27B3/08 , F27B3/28 , H05B7/144 , H05B7/20
摘要： Melting method comprising a step of loading solid metal material (M) into an electric furnace (11), a step of generating an electric arc between at least one electrode (13) and the metal material (M), a step of perforating the metal material during which said electrode (13) is moved through said metal material (M), a step of melting the solid metal material (M) in order to obtain a molten material, a step of refining said molten material by adding reaction compounds, and in which at least during one of said steps it is provided to regulate the electric parameters of the electric arc.

23. 发明申请

WO2018233833A1 A METHOD FOR OPERATING AN ELECTRIC-ARC FURNACE, A POWER ELECTRONIC CONVERTER, AND AN ELECTRIC-ARC FURNACE SYSTEM 审中-公开
公开(公告)号：WO2018233833A1
公开(公告)日：2018-12-27
申请号：PCT/EP2017/065412
申请日：2017-06-22
申请人： ABB SCHWEIZ AG
发明人： LILJESTRAND, Lars , DIJKHUIZEN, Frans , SVENSSON, Jan , ZHANG, Xiaojing , HAJEK, Jan , GREVE, Gerhard , PRADHAN, Manoj
IPC分类号： H05B7/144
CPC分类号： H05B7/144
摘要： The present invention relates to a method for operating an electric-arc furnace, EAF. The method comprises converting, in a power electronic converter, a grid frequency to an operating frequency for an EAF, controlling, in the power electronic converter, the converted operating frequency between 100Hz and 1 kHz,and operating one of more electrical arc(s) of the EAF with the controlled converted operating frequency. Corresponding power electronic converter, EAF system and power transformer are also presented.

24. 发明申请

WO2015096915A1 VORRICHTUNG UND VERFAHREN ZUR STABILEN LICHTBOGENERZEUGUNG UND INSBESONDERE ZUR ERHÖHUNG DES WIRKLEISTUNGSEINTRAGS BEI EINEM ELEKTROLICHTBOGENOFEN 审中-公开
标题翻译： DEVICE AND METHOD FOR电弧稳定生产特别是对提高电弧炉的效率ENTRY
公开(公告)号：WO2015096915A1
公开(公告)日：2015-07-02
申请号：PCT/EP2014/073107
申请日：2014-10-28
申请人： PRIMETALS TECHNOLOGIES GERMANY GMBH
发明人： DÖBBELER, Arno , HARTMANN, Werner , HERGT, Martin , RUPP, Jürgen
IPC分类号： H05B7/144 , F27B3/08 , H05H1/48 , G05F1/02
CPC分类号： H05H1/46 , F27B3/085 , F27B3/28 , F27D19/00 , F27D21/00 , H05B7/144 , H05H1/48 , H05H2001/4682 , Y02P10/256 , Y02P10/259
摘要： Die vorliegende Erfindung betrifft eine Zündvorrichtung und ein Zündverfahren für Elektrolichtbogenöfen, wobei mindestens zwei Elektroden jeweils mittels einer Phase eines Wechselstroms und einer dazugehörigen Phase einer Wechselspannung jeweils einen Lichtbogen erzeugen. Die Zündvorrichtung legt während eines Nulldurchgangs einer zu stabilisierenden Phase des Wechselstroms einer Elektrode einen Zündspannungsimpuls aus einer stabilisierenden Phase der Wechselspannung einer der anderen Elektroden an.
摘要翻译：本发明涉及一种点火装置和用于电弧炉的点火方法，每个所述至少两个电极通过的交流电流的相位和AC电压的相关联的相位的装置产生在各种情况下的电弧。待稳定化的交流电流的零交叉的相位的期间的点火装置设置到另一电极中的一个的AC电压的相位稳定的点火电压脉冲的电极。

25. 发明申请

WO2013063830A1 基于网络传输的数字式电弧炉电极控制方法及系统审中-公开
公开(公告)号：WO2013063830A1
公开(公告)日：2013-05-10
申请号：PCT/CN2011/082426
申请日：2011-11-18
申请人：中冶赛迪工程技术股份有限公司 , 张豫川
发明人：张豫川
IPC分类号： H05B7/144 , H04L29/00 , G05B13/00 , F27D11/10
CPC分类号： F27D11/10 , H05B7/144 , Y02P10/256 , Y02P10/259
摘要：本发明公开了一种基于网络传输的数字式电弧炉电极控制方法，包括：步骤1：通过电信号采集单元从电极短网系统采集电信号，将采集到的电信号输出；步骤2：前置数据处理模块对电信号进行处理计算，将参数数字化后，通过网络通信的方式将信号输出；步骤3：控制单元对数据进行处理后，向电极驱动单元发出控制信号；步骤4：电极驱动单元根据控制信号，对电极进行调节，该方法采用高速的电力系统监控装置作为调节器的数据处理和传输单元，可减少人工维护量，降低事故发生率，延长电弧炉的使用寿命，同时电极调节器系统整体响应速度的提高，可进一步稳定电弧，节约电耗，降低石墨电极的消耗；本发明的目的之二是提供一种基于网络传输的数字式电弧炉电极控制系统。

26. 发明申请

WO2006119440A2 DIRECT ELECTRIC RESISTANCE LIQUID HEATER 审中-公开
标题翻译：直接电阻液体加热器
公开(公告)号：WO2006119440A2
公开(公告)日：2006-11-09
申请号：PCT/US2006/017172
申请日：2006-05-03
申请人： CALLAHAN, Jeremiah, M. , BARZYK, James
发明人： CALLAHAN, Jeremiah, M. , BARZYK, James
IPC分类号： H05B7/144
CPC分类号： F24H1/106 , H05B3/60 , H05B2203/021
摘要： The Direct Electric Resistance Liquid Heater comprises a liquid heating chamber containing a plurality of electrodes. The electrodes are spaced apart to create a plurality of channels through which the liquid to be heated passes. The electrodes are each connected to a power supply by one or more switches. A controller controls the switches based upon data received from a temperature sensor, sensing the temperature of the liquid, and/or an electric current sensor, sensing the current utilized by the liquid heater. Selection of the number and spacing of the electrodes, and the number of switches, provides the controller with various current levels options to apply to the liquid to be heated. The current levels available due to the number and spacing of the electrodes and the number of switches, span the range from minimum current to maximum current such that the controller can incrementally increase or decrease the current applied to the liquid to be heated without disrupting other users of the same power source.
摘要翻译：直接电阻液体加热器包括含有多个电极的液体加热室。电极间隔开以形成多个通道，待加热液体通过该通道。电极各自通过一个或多个开关连接到电源。控制器基于从温度传感器接收的数据，感测液体的温度和/或电流传感器来控制开关，感测液体加热器使用的电流。选择电极的数量和间距以及开关数量为控制器提供了各种电流水平选项，以应用于待加热的液体。由于电极的数量和间隔以及开关数量而可用的电流水平跨越从最小电流到最大电流的范围，使得控制器可以递增地增加或减少施加到待加热液体的电流，而不会中断其他用户的电源。

27. 发明申请

WO2005020638A1 ELECTRIC ARC WELDER CONTROL DEVICE 审中-公开
标题翻译：电弧焊机控制装置
公开(公告)号：WO2005020638A1
公开(公告)日：2005-03-03
申请号：PCT/UA2004/000024
申请日：2004-04-26
IPC分类号： H05B7/144
CPC分类号： H05B7/005 , H05B7/144 , H05B7/148 , Y02P10/256 , Y02P10/259
摘要： The inventive device comprises a plasmatron, a starting and arc discharge-initiating mode control unit consisting of a high-frequency transformer (8), a half-controlled three phase diode-tyristor rectifier unit (1) which is in parallel connected to a tyristor (4) and a circuit breaker. Said half-controlled three-phase diode-tyristor rectifier unit (1) comprises a resistor (6) which is in series connected to the tyristor (4). The high-frequency transformer (8) is based on several closed magnetic circuits whose primary coils are in-series connected, the secondary coil thereof embraces all magnetic circuits and is inserted in-series into a cathode circuit. The starting and arc discharge-initiating mode control unit is provided with temperature control units for cooling water (15) in the plasmatron electrodes, units for controlling the electrical strength of the interelectrode space of said plasmatron and an electrode wear control unit (2).
摘要翻译：本发明的装置包括等离子体，起动和电弧放电启动模式控制单元，其由高频变压器（8），半控三相二极管 - 可控硅整流单元（1）组成，其中并联连接到可控硅（4）和断路器。所述半控三相二极管晶体管整流单元（1）包括串联连接到可控硅（4）的电阻（6）。高频变压器（8）基于几个闭合磁路，其初级线圈串联连接，其次级线圈包围所有磁路，并串联插入阴极电路。启动和电弧放电启动模式控制单元设置有用于等离子体电极中的冷却水（15）的温度控制单元，用于控制所述等离子体电极的电极间空间的电气强度的单元和电极磨损控制单元（2）。

28. 发明申请

WO2022208563A1 ELECTRIC POWER SUPPLY APPARATUS 审中-公开
公开(公告)号：WO2022208563A1
公开(公告)日：2022-10-06
申请号：PCT/IT2022/050072
申请日：2022-03-29
申请人： DANIELI AUTOMATION S.P.A.
发明人： MORDEGLIA, Antonello , POLO, Andrea
IPC分类号： H05B7/144 , H02M3/04 , H02M1/007 , H02M3/158 , H02M3/1584 , H02M7/06
摘要： An electric power supply apparatus (10) for a direct current user device (11) comprises electric power supply means (12) supplying a mains voltage and a mains current and a static power converter (15) to transform a direct electric voltage into a direct electric voltage of a different value, the static power converter (15) being connected to said electric power supply means (12) by means of a respective input connection circuit (23, 40) and to said user device (11) by means of a respective output connection circuit (24).

29. 发明申请

WO2021130244A1 CONTINUOUS CURRENT REGULATING DEVICE FOR AN ELECTRIC ARC FURNACE 审中-公开
公开(公告)号：WO2021130244A1
公开(公告)日：2021-07-01
申请号：PCT/EP2020/087664
申请日：2020-12-22
申请人： FUNDACIÓN CENER
发明人： VISIERS GUIXOT, Manuel
IPC分类号： H05B7/144 , H02H9/02 , H05B7/148
摘要： The present invention relates to a device, an installation, and a method for regulating the electric current in an electric arc furnace; particularly the invention relates to a regulator device which regulates the current circulating through the electrodes of the electric arc furnace and allows preventing the circulation of short-circuit currents that may damage the electrodes, as well as the current being cut off by a protective device which would stop the operation of the furnace.

30. 发明申请

WO2020259900A1 ARC FURNACE POWER SUPPLY WITH CONVERTER CIRCUIT 审中-公开
公开(公告)号：WO2020259900A1
公开(公告)日：2020-12-30
申请号：PCT/EP2020/062153
申请日：2020-04-30
申请人： ABB SCHWEIZ AG
发明人： STEIMER, Peter Karl
IPC分类号： H02M5/293 , H02M5/257 , H05B7/144 , H02M5/12 , H02M1/12 , H02M1/32 , H02M1/36
摘要： A power supply system (12) for an electric arc furnace (10) comprises an AC input (20) connectable to an electrical grid (22) and an AC output (24) for supplying at least one power electrode (14) of the arc furnace (10). The power supply system (12) further comprises a converter circuit (46a, 46b, 46c) interconnected between the AC input (20) and the AC output (24). The converter circuit (46a, 46b, 46c) comprises at least one converter cell (64) with a capacitor (108) and semiconductor switches (104) for series connecting the capacitor between a circuit input (56) and a circuit output (58) of the converter circuit (46a, 46b, 46c).

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