WO2009130772A1 - 誘導加熱装置の劣化診断装置 - Google Patents
誘導加熱装置の劣化診断装置 Download PDFInfo
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- WO2009130772A1 WO2009130772A1 PCT/JP2008/057888 JP2008057888W WO2009130772A1 WO 2009130772 A1 WO2009130772 A1 WO 2009130772A1 JP 2008057888 W JP2008057888 W JP 2008057888W WO 2009130772 A1 WO2009130772 A1 WO 2009130772A1
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- induction heating
- deterioration
- heating device
- temperature
- optical fiber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
Definitions
- the present invention relates to a deterioration diagnosis device for an induction heating device used in a rolling line for rolling a steel plate.
- a material to be heated (rolled material) is heated to a temperature at which it can be rolled in a heating furnace and formed into a state called a rough rolling bar by a rough rolling mill. Further, the rough rolled bar is rolled by a finish rolling machine to finish a product having a desired plate thickness and width.
- an induction heating device for various purposes such as reducing the load on a rolling mill obtained by the temperature drop of the steel material, or raising the temperature and soaking the material to be heated. It has become common. That is, in the rolling line, the rolling material or other heated material is heated or heat-treated by an induction heating device.
- an induction heating apparatus used in a rolling line for example, an edge heater for the purpose of increasing the temperature of both edge portions of the material to be heated and a bar heater for the purpose of increasing the temperature of the entire material to be heated are known. Yes.
- FIG. 7 is a perspective view showing a configuration of a general edge heater.
- the edge heater 2 is provided with an inductor for heating the material to be heated 1.
- the main part of the inductor is composed of a C-shaped iron core 3, a radial iron core 4, and a heating coil 5. Further, each of the above components of the inductor is protected by a shield cover 6 and a heat-resistant plate 7 for the purpose of suppressing radiant heat, scale, intrusion of water and water vapor from the material to be heated 1.
- induction heating devices as shown in FIG. 7 have been introduced one after another in the hot rolling line.
- most of the induction heating apparatuses introduced to the hot rolling line have to continue operation for a long period of time.
- the induction heating device is aged or deteriorated due to the operation over a long period of time, and the equipment is suddenly stopped.
- FIG. 8 is a diagram showing a conventional configuration relating to maintenance of the induction heating apparatus, and shows an apparatus for cooling the edge heater 2 shown in FIG.
- a hose 17 for passing cooling water is connected to each of the C-shaped iron core 3, the radial iron core 4, the heating coil 5, the shield cover 6 and the heat-resistant plate 7 constituting the edge heater 2.
- FIG. 8 shows only the hose 17 for the upper heating coil 5 and the like for the sake of simplicity, but the same cooling water system is configured for the lower side.
- the hoses 17 are grouped by a water supply pipe 18 and a drainage pipe 19 and connected to a heat exchanger, a cooling water tank, and the like.
- a thermostat 13 for temperature adjustment is installed on the drain side of each hose 17, and a flow meter 14 is installed on the outlet side of the drain mother pipe 19.
- the flow meter 14 is originally installed in each hose 17.
- the actual device is connected to, for example, a drainage mother pipe 19 as shown in FIG. 8 due to space limitations inside the inductor.
- thermostat 13 or a flow meter 14 As a sensor, these sensors do not directly sense the components of the inductor such as the heating coil 5, but are indirect sensing such as sensing the cooling water of these components that require water cooling. Further, the thermostat 13 and the flow meter 14 generally output a contact signal at a failure level, and merely have a function of detecting the occurrence of a failure. That is, in the conventional apparatus, it has not been possible to monitor the deterioration state of the induction heating apparatus and prevent sudden equipment stoppage in the hot rolling line.
- the maintenance and inspection of the induction heating apparatus must be completed within the hot rolling line stop date, that is, within a limited time.
- the structure of the induction heating apparatus is complicated, it takes a lot of time and cost to determine the deteriorated part and to perform maintenance and inspection of the part. Therefore, sufficient maintenance and inspection for the induction heating apparatus cannot be performed only on the hot rolling line stop date, and it is not rare that the facility is suddenly stopped. Under such circumstances, there is an increasing need for efficient maintenance and inspection for induction heating devices. That is, a measure for accurately grasping the deterioration state of the induction heating device, clarifying the maintenance inspection point, and reliably repairing the deteriorated portion on the hot rolling line stop date is expected.
- the present invention has been made to solve the above-described problems, and its purpose is to enable efficient maintenance and inspection by accurately grasping the deterioration transition of the induction heating apparatus, and to perform induction heating. It is an object of the present invention to provide a deterioration diagnosis device for an induction heating device that can prevent a sudden facility stop due to a device failure.
- a deterioration diagnosis apparatus for an induction heating apparatus is a deterioration diagnosis apparatus for diagnosing deterioration of an induction heating apparatus used in a rolling line, and for detecting the temperature inside the induction heating apparatus. And a monitoring device for monitoring the deterioration status of the induction heating device based on the detection result of the sensor.
- the present invention by accurately grasping the deterioration transition of the induction heating device, efficient maintenance and inspection can be performed, and sudden stoppage of equipment due to failure of the induction heating device can be prevented. Become.
- FIG. 1 It is a figure which shows the whole structure of the deterioration diagnostic apparatus of the induction heating apparatus in Embodiment 1 of this invention. It is a perspective view which shows the principal part of the deterioration diagnostic apparatus of the induction heating apparatus shown in FIG. It is a figure which shows an example of the monitoring screen. It is a figure which shows the other example of a monitoring screen. It is a figure which shows the whole structure of the deterioration diagnostic apparatus of the induction heating apparatus in Embodiment 2 of this invention. It is a figure which shows an example of the monitoring screen. It is a perspective view which shows the structure of a general edge heater. It is a figure which shows the conventional structure regarding the maintenance of an induction heating apparatus.
- FIG. 1 is a diagram showing an overall configuration of an induction heating device deterioration diagnosis device according to Embodiment 1 of the present invention
- FIG. 2 is a perspective view showing a main part of the induction heating device deterioration diagnosis device shown in FIG.
- This deterioration diagnosis device is for diagnosing deterioration of an induction heating device used in a rolling line.
- the induction heating device used in the rolling line has, for example, a configuration similar to that shown in FIG. 7, and includes an edge heater 2 that raises the temperature of both edge portions of the heated material 1 (rolled material). Composed.
- the edge heater 2 includes an inductor for heating the material 1 to be heated, and this inductor is formed by a C-shaped iron core 3, a radial iron core 4, and a heating coil 5 (upper heating coil 5a, lower heating coil 5b).
- the main part is configured.
- each of the above components of the inductor is protected by a shield cover 6 and a heat-resistant plate 7 for the purpose of suppressing radiant heat, scale, intrusion of water and water vapor from the material to be heated 1.
- each of the above components of the inductor is protected by the shield cover 6 or the like.
- the inside thereof is usually kept at about 60 ° C.
- the shield cover 6 or the heat-resistant plate 7 is damaged or deteriorated for some reason, the C-shaped iron core 3, the radial iron core 4, and the heating coil 5 directly receive radiant heat from the heated material 1.
- the scale adheres or the deposited scale is overheated by induction heating, thereby accelerating damage and deterioration of each component of the inductor.
- the deterioration diagnosis device includes a sensor for directly detecting the internal state of the induction heating device, and a detection result of the sensor.
- a monitoring device for monitoring the deterioration status of the induction heating device is provided.
- FIGS. 1 and 2 show an example in which an optical fiber 8 is used as the sensor to detect the temperature inside the induction heating device, and the optical fiber 8 is laid inside the induction heating device.
- the optical fiber 8 is stretched around the lower surface of the upper heating coil 5a and the upper surface of the lower heating coil 5b, for example. That is, in the present embodiment, the case where the optical fiber 8 (a part thereof) is laid on the surface of the heating coil 5 that faces the direction of the heated material 1 when the heated material 1 is heated is shown.
- the output signal of the optical fiber 8, that is, the temperature information output from the optical fiber 8, is temporarily stored in a data collection device 9 that collects the data. Then, the temperature data stored in the data collection device 9 is processed and edited by the personal computer 10 which is a main part of the monitoring device, and necessary information is displayed on the monitor (monitoring screen). That is, the monitoring device has a function for monitoring the deterioration transition of the induction heating device using temperature detection as an index.
- the edge heater 2 can be installed near the main circuit cable or the heating coil 5 even when the power source of the edge heater 2 is the high frequency inverter power source 11. Moreover, if it is the optical fiber 8, the measurement of about 400 degreeC used as the degradation standard of the heating coil 5, the radial iron core 4, etc. is possible, and it can also arrange
- FIG. 1 and 2 show the case where the optical fiber 8 is stretched around the heating coil 5, this is merely an example in which the optical fiber 8 is laid in a place where deterioration is likely to occur. That is, it goes without saying that if the optical fiber 8 is stretched around a place in the induction heating device where the temperature is desired to be monitored, deterioration can be monitored at any place.
- FIG. 3 is a diagram illustrating an example of a monitoring screen
- FIG. 4 is a diagram illustrating another example of the monitoring screen. 3 and 4 both show examples of screens displayed on the monitor of the personal computer 10.
- the lower surface of the upper heating coil 5 a and the upper surface of the lower heating coil 5 b are each displayed in four divisions on the monitor of the personal computer 10, and the temperature of each divided portion is displayed numerically. Is shown.
- the temperature (numerical value) displayed on the monitor is a value obtained based on the output signal of the optical fiber 8. That is, the optical fiber 8 is stretched around the lower surface of the upper heating coil 5a and the upper surface of the lower heating coil 5b so that the temperatures of the divided parts can be detected.
- the state of the heating coil 5 can be monitored.
- the screen example shown in FIG. 4 displays temperature information of the heating coil 5 obtained from the output signal of the optical fiber 8 on a monitor so that the temperature transition can be visually confirmed. That is, the temperature information of the heating coil 5 is plotted with respect to the time axis.
- the operation signal 12 of the high-frequency inverter power supply 11 and the alarm signal 15 from the thermostat 13 and the flow meter 14 are displayed using the same time axis, and are monitored items. It is taken in as.
- the operation signal 12 is incorporated as information for confirming the operation state of the edge heater 2.
- Embodiment 1 of the present invention it is possible to perform efficient maintenance and inspection by accurately grasping the deterioration transition of the induction heating device, and to prevent sudden equipment stoppage due to the failure of the induction heating device. Will be able to.
- the deterioration diagnosis device having the above-described configuration, direct sensing of the inductor components such as the heating coil 5 is possible, and aging and deterioration of the induction heating device can be accurately detected. Moreover, since the deterioration state of the induction heating apparatus can be accurately detected, it is possible to accurately grasp the points that require maintenance and inspection. That is, a maintenance plan based on the monitoring data can be made before the rolling line stop date, and the maintenance inspection can be greatly improved in efficiency. In addition, since it becomes possible to grasp
- FIG. FIG. 5 is a diagram showing an overall configuration of a deterioration diagnosis device for an induction heating device in Embodiment 2 of the present invention
- FIG. 6 is a diagram showing an example of a monitoring screen.
- image data of a temperature detection object for example, the heating coil 5
- numerical data of the temperature of the temperature detection object detected by the sensor are displayed in time synchronization.
- a thermal image camera 16 is installed in the edge heater 2 in addition to the configuration shown in FIG. Yes.
- the focal point is set so as to match the laying portion of the optical fiber 8.
- the output information of the thermal image camera 16 (for example, thermal image data on the upper surface of the lower heating coil 5b) is displayed on the monitor of the personal computer 10 together with numerical data indicating the temperature transition.
- the example of a screen shown in FIG. 6 shows a case where the operation signal 12 and the alarm signal 15 are displayed using the same time axis together with the temperature information of the heating coil 5 and are captured as monitoring items.
- the second embodiment of the present invention it is possible to monitor the temperature monitoring point due to the laying of the optical fiber 8 using the thermal image data.
- visual state monitoring for example, it is possible to grasp changes in various equipment states such as in what operating state during normal operation the deterioration of the induction heating device progresses. It becomes possible.
- the deterioration diagnosis device for an induction heating device according to the present invention can be applied to various induction heating devices (for example, edge heaters, bar heaters, etc.) used in a rolling line.
- induction heating devices for example, edge heaters, bar heaters, etc.
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Abstract
Description
また、サーモスタット13や流量計14は、故障レベルの接点信号を出力するものが一般的であり、単に、故障の発生を検知する機能を備えるだけであった。即ち、従来のものでは、誘導加熱装置の劣化状況を監視して、熱間圧延ラインにおける突発的な設備停止を防止することまではできなかった。
このような状況から、誘導加熱装置に対して、効率的な保守点検を行うニーズが高まっている。即ち、誘導加熱装置の劣化状況を的確に把握して保守点検ポイントを明確にし、熱間圧延ラインの停止日に、その劣化部分を確実に修復するための方策が期待されている。
5 加熱コイル、 5a 上側加熱コイル、 5b 下側加熱コイル、
6 シールドカバー、 7 耐熱プレート、 8 光ファイバー、
9 データ収集装置、 10 パソコン、 11 高周波インバータ電源、
12 運転信号、 13 サーモスタット、 14 流量計、 15 警報信号、
16 熱画像カメラ、 17 ホース、 18 給水母管、 19 排水母管
図1はこの発明の実施の形態1における誘導加熱装置の劣化診断装置の全体構成を示す図、図2は図1に示す誘導加熱装置の劣化診断装置の要部を示す斜視図である。
この劣化診断装置は、圧延ラインで用いられる誘導加熱装置の劣化を診断するためのものである。なお、圧延ラインで用いられる誘導加熱装置は、例えば、図7に示すものと同様の構成を有しており、被加熱材1(圧延材)の両エッジ部分の温度を上昇させるエッジヒータ2から構成される。即ち、エッジヒータ2は、被加熱材1を加熱するためのインダクターを備え、このインダクターは、C形鉄心3、ラジアル鉄心4、加熱コイル5(上側加熱コイル5a、下側加熱コイル5b)によってその要部が構成される。また、インダクターの上記各構成物は、被加熱材1からの輻射熱、スケール、水や水蒸気の浸入等を抑制することを目的として、シールドカバー6や耐熱プレート7によって保護されている。
図3に示す画面例は、パソコン10のモニターに、上側加熱コイル5aの下面と下側加熱コイル5bの上面とをそれぞれ4分割に表示し、各分割された部位の温度を数値によって表示する場合を示している。なお、モニターに表示される温度(数値)は、光ファイバー8の出力信号に基づいて得られた値である。即ち、光ファイバー8は、上記分割された部位の温度をそれぞれ検出することができるように、上側加熱コイル5aの下面と下側加熱コイル5bの上面とに張り巡らされている。このように、それぞれの部位についての温度監視を行うことにより、加熱コイル5の状態監視が可能となる。
このような画面構成を採用することにより、エッジヒータ2の運転/停止状態における加熱コイル5の温度状態の監視が可能となる。また、上記画面構成であれば、エッジヒータ2の状態監視を、サーモスタット13や流量計14による装置異常の検出と関連付けて行うことが可能になる。
図5はこの発明の実施の形態2における誘導加熱装置の劣化診断装置の全体構成を示す図、図6は監視画面の一例を示す図である。図5及び図6に示す劣化診断装置では、センサーによって温度が検出される温度被検出体(例えば、加熱コイル5)の画像データと、センサーによって検出された上記温度被検出体の温度の数値データとを、時刻同期させて表示している。
Claims (5)
- 圧延ラインで用いられる誘導加熱装置の劣化を診断するための劣化診断装置であって、
前記誘導加熱装置の内部の温度を検出するために前記誘導加熱装置の内部に敷設された光ファイバーを有するセンサーと、
前記センサーの検出結果に基づいて前記誘導加熱装置の劣化状況を監視するための監視装置と、
を備えたことを特徴とする誘導加熱装置の劣化診断装置。 - 誘導加熱装置は、被加熱材を加熱するための加熱コイルを備え、
光ファイバーは、少なくともその一部が、前記加熱コイルのうち、前記被加熱材の加熱時に前記被加熱材の方向を向く面に敷設された
ことを特徴とする請求項1に記載の誘導加熱装置の劣化診断装置。 - 監視装置は、光ファイバーの出力信号から得られた誘導加熱装置の内部の温度情報を、その温度推移が目視確認できるように表示する機能を備えたことを特徴とする請求項1又は請求項2に記載の誘導加熱装置の劣化診断装置。
- 監視装置は、センサーによって温度が検出される温度被検出体の画像データと、前記センサーによって検出された前記温度被検出体の温度の数値データとを、時刻同期させて表示することを特徴とする請求項1から請求項3の何れかに記載の誘導加熱装置の劣化診断装置。
- 温度被検出体の画像データを取得するため、焦点が光ファイバーの敷設部分に合うように設定された熱画像カメラと、
を更に備えたことを特徴とする請求項4に記載の誘導加熱装置の劣化診断装置。
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PCT/JP2008/057888 WO2009130772A1 (ja) | 2008-04-24 | 2008-04-24 | 誘導加熱装置の劣化診断装置 |
CN200880125598XA CN101925420A (zh) | 2008-04-24 | 2008-04-24 | 感应加热装置的劣化诊断装置 |
JP2010509001A JP5012997B2 (ja) | 2008-04-24 | 2008-04-24 | 誘導加熱装置の劣化診断装置 |
KR1020107015648A KR20100093118A (ko) | 2008-04-24 | 2008-04-24 | 유도가열 장치의 열화 진단 장치 |
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Cited By (3)
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JP2012163459A (ja) * | 2011-02-08 | 2012-08-30 | Toshiba Mitsubishi-Electric Industrial System Corp | 光ファイバ温度センサ |
JP2014144471A (ja) * | 2013-01-29 | 2014-08-14 | Kobe Steel Ltd | 加熱炉の操業支援システム |
WO2018123049A1 (ja) * | 2016-12-28 | 2018-07-05 | 東芝三菱電機産業システム株式会社 | 誘導加熱装置の診断装置 |
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CN105828978B (zh) * | 2013-12-23 | 2019-06-07 | Posco公司 | 连铸轧制装置及方法 |
JP6719338B2 (ja) * | 2016-08-30 | 2020-07-08 | アズビル株式会社 | 設計評価支援システム |
CN110955287A (zh) * | 2019-11-04 | 2020-04-03 | 武汉天富海科技发展有限公司 | 一种全自动隔离式多通道智能化加热装置 |
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CN101925420A (zh) | 2010-12-22 |
JP5012997B2 (ja) | 2012-08-29 |
KR20100093118A (ko) | 2010-08-24 |
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