公开(公告)号：US10705196B2

公开(公告)日：2020-07-07

申请号：US15812462

申请日：2017-11-14

Applicant: HATCH LTD.

Inventor： Matthew H. Cramer ,  Afshin Sadri ,  Jennifer Erskine ,  David Chataway ,  Bert O. Wasmund ,  Terry Gerritsen

IPC: G01S13/08 ,  G01F23/284 ,  G01S13/88 ,  F27D21/00 ,  F27B3/28 ,  F27B3/08

Abstract: A method for determining a length parameter of an electrode during operation of an electric arc furnace. An internal duct extends through the length of the electrode and is open at its lower end. A waveguide having a solid core is received in the internal duct and comprises a material having a low dielectric constant and high temperature resistance. The solid core of the waveguide includes at least one target. An electromagnetic radiation signal is emitted from a source and transmitted through the waveguide and the signal is diffracted and/or reflected from at least one target to produce at least one return signal which is transmitted back through the waveguide. A time or frequency difference between the emitted signal and the return signal is measured and the length parameter is calculated based on this difference.

公开(公告)号：US09791416B2

公开(公告)日：2017-10-17

申请号：US14081327

申请日：2013-11-15

Applicant: Hatch Ltd.

Inventor： Pawel Boleslaw Gebski ,  Afshin Sadri ,  Wai-Lai Ying

IPC: G01N29/14 ,  G01N29/44 ,  F27B3/28 ,  F27D21/00

CPC classification number: G01N29/14 ,  F27B3/28 ,  F27D21/0021 ,  G01N29/4427

Abstract: Various systems and method for acoustic monitoring of smelting furnaces and similar devices are disclosed. Acoustic sensors (and optionally other sensors) are mounted to the furnace. Acoustic emission events generated in the furnace are analyzed to identify conditions that exceed one or more thresholds. The location of acoustic emissions may be identified and reported. Output signals may be generated in response to acoustic emissions. The location of acoustic emissions may be used to identify the location of potential failures in the furnace.

公开(公告)号：US20140123758A1

公开(公告)日：2014-05-08

申请号：US14081327

申请日：2013-11-15

Applicant: Hatch Ltd.

Inventor： Pawel Boleslaw Gebski ,  Afshin Sadri ,  Wai-Lai Ying

IPC: G01N29/14

CPC classification number: G01N29/14 ,  F27B3/28 ,  F27D21/0021 ,  G01N29/4427

Abstract: Various systems and method for acoustic monitoring of smelting furnaces and similar devices are disclosed. Acoustic sensors (and optionally other sensors) are mounted to the furnace. Acoustic emission events generated in the furnace are analyzed to identify conditions that exceed one or more thresholds. The location of acoustic emissions may be identified and reported. Output signals may be generated in response to acoustic emissions. The location of acoustic emissions may be used to identify the location of potential failures in the furnace.

Abstract translation: 公开了用于熔炼炉和类似装置的声学监测的各种系统和方法。 声学传感器（以及可选的其它传感器）安装在炉子上。 分析炉中产生的声发射事件，以识别超过一个或多个阈值的条件。 可以识别和报告声发射的位置。 可以响应于声发射而产生输出信号。 声发射的位置可用于识别炉中潜在故障的位置。