公开(公告)号：US20240255359A1

公开(公告)日：2024-08-01

申请号：US18636467

申请日：2024-04-16

申请人： SSAB Enterprises, LLC ,  Iowa State University Research Foundation, Inc.

发明人： Meng Lu ,  Jingjing Qian ,  Sunday O. Abraham ,  Randy Petty ,  Matthew J. Werner

IPC分类号： G01K11/32 ,  C21C5/52 ,  F27D21/00 ,  G01K11/12 ,  G02B6/02 ,  H01L31/0216 ,  H05B7/148

CPC分类号： G01K11/32 ,  C21C5/52 ,  F27D21/0014 ,  G01K11/12 ,  G02B6/02395 ,  H01L31/0216 ,  H05B7/148 ,  C21C2005/5288

摘要： A temperature sensor according to the disclosure herein includes an optical fiber structured to produce a thermal emission representative of a molten steel into which the temperature sensor is inserted; a cladding layer covering at least a portion of the optical fiber; and a spectrometer configured to receive the thermal emission from the optical fiber and to generate, in response, a radiation spectrum indicative of a temperature of the molten steel.

公开(公告)号：US20230199924A1

公开(公告)日：2023-06-22

申请号：US17926233

申请日：2021-05-19

申请人： CEA GROUP S.R.L.

发明人： Oreste FUSARI

IPC分类号： H05B7/148 ,  H05B7/00 ,  H02M7/217 ,  H02M7/219 ,  H02M1/12

CPC分类号： H05B7/148 ,  H05B7/005 ,  H02M7/2173 ,  H02M7/219 ,  H02M1/126

摘要： A power supply system for an arc furnace, suitable for converting voltage of a three-phase electric power network into power supply voltage for the arc furnace, has an indirect AC/AC converter having a converter input and a converter output, and a matching apparatus having a matching transformer having a secondary side connectable to the arc furnace and a primary side operatively connected to the converter output. An input transformer group, inserted between the indirect AC/AC converter and the three-phase electric power network, has an input transformer primary side connectable to the three-phase electric power system, an input transformer secondary side connected to the converter input, a first input transformer and a second input transformer. Each of the first and second input transformers has three mutually displaced groups of secondary windings, each of which has a winding for each phase corresponding to a phase of the three-phase electric power network.

公开(公告)号：US20210190603A1

公开(公告)日：2021-06-24

申请号：US16723445

申请日：2019-12-20

申请人： SSAB Enterprises, LLC ,  Iowa State University Research Foundation, Inc.

发明人： Meng Lu ,  Jingjing Qian ,  Sunday O. Abraham ,  Randy Petty ,  Matthew J. Werner

IPC分类号： G01K11/32 ,  H05B7/148

摘要： A temperature sensor including a sapphire optical fiber and a nanoporous cladding layer covering at least a portion of the sapphire optical fiber.

公开(公告)号：US10989474B2

公开(公告)日：2021-04-27

申请号：US16479624

申请日：2018-01-30

申请人： ABB Schweiz AG

发明人： Marco Schoeni ,  Raeto Stadler ,  Ralf Baechle

IPC分类号： H05B7/148 ,  F27D11/08 ,  F27D19/00 ,  H05B7/18 ,  H05B7/144

摘要： A control device for an arc furnace includes an arc furnace control module for controlling the arc furnace and a flicker module for determining a flicker value in a grid supplying the arc furnace, wherein the arc furnace control module is adapted for controlling the arc furnace based on the flicker value and wherein the arc furnace control module and the flicker module are integrated into one structural component.

公开(公告)号：US20180242411A1

公开(公告)日：2018-08-23

申请号：US15579796

申请日：2016-05-26

申请人： HATCH LTD.

发明人： Dong SHEN ,  Michael Morgan CAMPBELL ,  Jason CHEUNG ,  James WIKSTON

IPC分类号： H05B7/148 ,  F27B3/28 ,  F27B3/08

CPC分类号： H05B7/148 ,  F27B3/085 ,  F27B3/28 ,  F27D11/08 ,  F27D19/00 ,  F27D21/00 ,  H02J3/1864 ,  Y02P10/256 ,  Y02P10/259

摘要： It is proposed herein to employ thyristor firing angles as a fast prediction of flicker in power supply for an electric arc furnace. It is further proposed to actively modify operating variables for the electric arc furnace to maintain the flicker below a predefined threshold. Aspects of the present application use the thyristor firing angles in combination with control ranges of variable reactance devices to predict the flicker severity level generated by the electric arc furnace with thyristor-controlled variable reactance devices. Based on the predicted flicker level, at least one operating variable of the electric arc furnace may be changed, if required, to maintain flicker to acceptable limit.

公开(公告)号：US09949322B2

公开(公告)日：2018-04-17

申请号：US14233886

申请日：2012-07-12

申请人： Arno Döbbeler ,  Dieter Fink ,  Detlef Rieger

发明人： Arno Döbbeler ,  Dieter Fink ,  Detlef Rieger

IPC分类号： H05B7/148 ,  F27B3/28 ,  F27B3/08 ,  F27B3/20 ,  F27D99/00

CPC分类号： H05B7/148 ,  F27B3/085 ,  F27B3/20 ,  F27B3/28 ,  F27D2099/0021 ,  Y02P10/256 ,  Y02P10/259

摘要： In a method for operating an electric arc furnace operated with an alternating voltage, a structure-borne sound signal occurring on a wall of the electric arc furnace is detected, from which structure-borne sound signal a parameter characterizing the flicker properties of the electric arc furnace is calculated. At least one process variable of the electric arc furnace is controlled on the basis of the calculated parameter. An electric arc furnace operated according to the method is used in and for a melting plant.

公开(公告)号：US09572203B2

公开(公告)日：2017-02-14

申请号：US14490366

申请日：2014-09-18

申请人： ABB Research Ltd.

发明人： Michael Lundh ,  Xiaojing Zhang

IPC分类号： F27B3/28 ,  F27D19/00 ,  F27D21/00 ,  H05B7/144 ,  H05B7/148 ,  C21C5/52 ,  H05B7/18 ,  F27D27/00

CPC分类号： H05B7/144 ,  C21C5/5211 ,  C21C5/5217 ,  C21C2005/5288 ,  C21C2300/06 ,  F27B3/28 ,  F27D19/00 ,  F27D21/00 ,  F27D27/00 ,  H05B7/148 ,  H05B7/18 ,  Y02P10/216 ,  Y02P10/256 ,  Y02P10/259 ,  Y02P10/286

摘要： Disclosed is a control system for a melting process in an electric arc furnace for melting a metallic material that minimizes desired process properties such as the melting time or the total power consumption of the melting process. The system includes a processing unit adapted for receiving or collecting measured data of at least one process variable, determining the current state of the process, performing an optimization of the melting process, determining a process input based on the result of the optimization, and controlling the melting process with the process input. A method is also presented herein.

摘要翻译： 公开了一种用于熔化金属材料的电弧炉中的熔化过程的控制系统，其使期望的工艺特性（例如熔化过程的熔化时间或总功率消耗）最小化。 该系统包括处理单元，适于接收或收集至少一个过程变量的测量数据，确定过程的当前状态，执行熔化过程的优化，基于优化结果确定过程输入，以及控制 熔化过程与过程输入。 本文还给出了一种方法。

公开(公告)号：US20150215998A1

公开(公告)日：2015-07-30

申请号：US14428691

申请日：2013-10-09

申请人： MASCHINENFABRIK REINHAUSEN

发明人： Klaus Krueger ,  Dieter Dohnal ,  Karsten Viereck ,  Alexei Babizki

IPC分类号： H05B7/148 ,  F27D19/00

CPC分类号： H05B7/148 ,  F27D19/00 ,  F27D2019/0037 ,  H05B7/144 ,  Y02P10/256 ,  Y02P10/259

摘要： Disclosed is a device and a method for regulating an electric arc furnace (10) in the initial phase of a smelting process. A sensor (16) for measuring the present voltage and a sensor (15) for measuring the presently flowing current are provided in each line (7) of the electric arc furnace (10). The actual impedance (Zist) is time-dependently calculated by a control and regulating unit (30). An on-load tap changer (20) that is constructed as a semiconductor tap changer, is assigned to a furnace transformer (6) with a primary side (6P) and a secondary side (6S). The semiconductor tap changer (20) realizes a cycle time of a few milliseconds.

摘要翻译： 公开了一种在冶炼过程的初始阶段调节电弧炉（10）的装置和方法。 用于测量当前电压的传感器（16）和用于测量当前流动电流的传感器（15）设置在电弧炉（10）的每条线（7）中。 实际阻抗（Zist）由控制和调节单元（30）时间依赖性地计算。 被构造为半导体分接开关的有载分接开关（20）被分配给具有初级侧（6P）和次级侧（6S）的炉式变压器（6）。 半导体分接开关（20）实现了几毫秒的周期时间。

公开(公告)号：US08888888B2

公开(公告)日：2014-11-18

申请号：US14158497

申请日：2014-01-17

申请人： Michael Lundh ,  Xiaojing Zhang

发明人： Michael Lundh ,  Xiaojing Zhang

IPC分类号： C21C5/00 ,  F27D19/00 ,  H05B7/00 ,  F27D3/00 ,  F27D21/00 ,  F27B3/28 ,  C21C5/52 ,  H05B7/148 ,  F27D27/00

CPC分类号： H05B7/144 ,  C21C5/5211 ,  C21C5/5217 ,  C21C2005/5288 ,  C21C2300/06 ,  F27B3/28 ,  F27D19/00 ,  F27D21/00 ,  F27D27/00 ,  H05B7/148 ,  H05B7/18 ,  Y02P10/216 ,  Y02P10/256 ,  Y02P10/259 ,  Y02P10/286

摘要： A method of controlling a melting process in an electric arc furnace for melting a metallic material. By means of the present disclosure it is possible to minimize desired process properties such as the melting time or the total power consumption of the melting process. The method includes the steps of receiving or collecting measured data of at least one process variable, determining the current state of the process, performing an optimization of the melting process, determining a process input based on the result of the optimization, and controlling the melting process by means of the process input. A control system is also presented herein.

摘要翻译： 一种控制电弧炉中熔融金属材料熔化过程的方法。 通过本公开，可以最小化期望的工艺特性，例如熔化过程的熔化时间或总功率消耗。 该方法包括以下步骤：接收或收集至少一个过程变量的测量数据，确定过程的当前状态，执行熔化过程的优化，基于优化结果确定过程输入，以及控制熔化 通过过程输入过程。 本文还介绍了一种控制系统。

公开(公告)号：US20140185645A1

公开(公告)日：2014-07-03

申请号：US14233886

申请日：2012-07-12

申请人： Arno Döbbeler ,  Dieter Fink ,  Detlef Rieger

发明人： Arno Döbbeler ,  Dieter Fink ,  Detlef Rieger

IPC分类号： H05B7/148

CPC分类号： H05B7/148 ,  F27B3/085 ,  F27B3/20 ,  F27B3/28 ,  F27D2099/0021 ,  Y02P10/256 ,  Y02P10/259

摘要： In a method for operating an electric arc furnace operated with an alternating voltage, a structure-borne sound signal occurring on a wall of the electric arc furnace is detected, from which structure-borne sound signal a parameter characterizing the flicker properties of the electric arc furnace is calculated. At least one process variable of the electric arc furnace is controlled on the basis of the calculated parameter. An electric arc furnace operated according to the method is used in and for a melting plant.

摘要翻译： 在用交流电压操作的电弧炉的操作方法中，检测出发生在电弧炉壁上的结构声音信号，结构声音信号是表征电弧的闪烁特性的参数 炉计算。 基于计算出的参数控制电弧炉的至少一个过程变量。 根据该方法操作的电弧炉用于熔化设备和用于熔化设备。