WO2004002136A1 - Camera video a brancher pour four et systeme de traitement d'images - Google Patents
Camera video a brancher pour four et systeme de traitement d'images Download PDFInfo
- Publication number
- WO2004002136A1 WO2004002136A1 PCT/CN2003/000491 CN0300491W WO2004002136A1 WO 2004002136 A1 WO2004002136 A1 WO 2004002136A1 CN 0300491 W CN0300491 W CN 0300491W WO 2004002136 A1 WO2004002136 A1 WO 2004002136A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- camera
- furnace
- image
- monitor
- image processing
- Prior art date
Links
- 238000012545 processing Methods 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 39
- 238000009826 distribution Methods 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000010926 purge Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 13
- 230000009977 dual effect Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000003723 Smelting Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 10
- 230000001681 protective effect Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 244000144985 peep Species 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- POIUWJQBRNEFGX-XAMSXPGMSA-N cathelicidin Chemical group C([C@@H](C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(O)=O)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CC(C)C)C1=CC=CC=C1 POIUWJQBRNEFGX-XAMSXPGMSA-N 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/20—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from infrared radiation only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/33—Transforming infrared radiation
Definitions
- the invention belongs to the technical field of process monitoring and control of industrial furnaces, and particularly relates to a plug-in furnace kiln camera and an image processing system using the plug-in furnace kiln camera.
- furnaces In many industrial production fields, various furnaces must be used. For example, in the metallurgical industry, vertical furnaces such as ironmaking blast furnaces and other furnaces are required. In order to obtain the basis for guiding the operation, the operator should know the temperature distribution of the material surface in these industrial furnaces. However, since these industrial furnaces are isolated from the outside world, the airflow above the material surface often contains dust, various toxic gases and steam, so it is very difficult to observe the material surface in the furnace.
- the above-mentioned observation devices in the prior art have many shortcomings, for example: the shape of the camera installed outside the furnace shell is large and expensive; the observation hole is large, the movement and the protection device are complicated; the scanning device must be short due to its short life. Frequent replacement; and large amount of protective gas, high production and maintenance costs.
- camera lenses and windows are prone to ash during the use of the blast furnace. Complex window shutters and mechanical focusing devices often fail. Once these conditions occur, observations cannot be continued. And because the furnaces and kilns using these observation devices often work in continuous production, these devices in the prior art can only be maintained and repaired when production is stopped. Taking blast furnaces as an example, they can only wait for the wind to break. For processing.
- the technical problem to be solved by the present invention is to provide a camera for monitoring the internal conditions of an industrial furnace and kiln inserted in the furnace shell, which can overcome the above-mentioned shortcomings of the prior art, and a camera using the camera.
- Image processing system, the camera of the present invention and the image processing system using the camera are particularly suitable for monitoring the working condition of the material surface in the furnace during the smelting process of ironmaking blast furnace, and using a computer to perform image processing, quantitatively describe The distribution of airflow and temperature on the surface of the material; and monitor the working conditions of the chute or the bell, as well as the condition of the material flow during charging and abnormal furnace conditions such as pipes and collapse in the furnace.
- the inventor first conducted laboratory research, and then repeatedly performed industrial experiments on multiple ironmaking blast furnaces. Through continuous improvement and perfection, the present invention was finally completed.
- the content of the present invention is as follows.
- the first content of the present invention is a plug-in furnace and kiln camera, which is characterized by: consisting of a camera body, a video camera, a monitor, and a digital thermometer;
- the camera body consists of a camera, a camera gun, a tube cooler, a sealing device, a peephole, a purge ring, and a temperature measuring element;
- the camera is installed at the front end of the camera gun and inserted into the furnace through a tube cooler installed on the short tube of the flange of the furnace shell;
- the temperature measuring element is located near the upper part of the camera in the camera gun;
- the camera uses a wide-angle lens with a viewing angle of 90 ⁇ 120 °;
- the video recorder, monitor and digital thermometer are placed outside the furnace shell, and are connected to the camera and the temperature measuring element by cable respectively.
- the second aspect of the present invention is that, in the plug-in furnace kiln camera of the first aspect,
- the industrial furnace is an ironmaking blast furnace
- the camera is a miniature camera
- the diameter range of the tube cooler is 60 ⁇ 200mm, and the length range is 200-3000mm;
- the diameter of the peephole is ⁇ 3 ⁇ ⁇ 15mm;
- the purging ring gap has a width of 0.2 to 3.0 mm.
- the third aspect of the present invention is that, in the plug-in furnace kiln camera described in the second aspect, the miniature camera uses a CCD (Charge Coupled Device) with a wide photosensitive range.
- CCD Charge Coupled Device
- the fourth aspect of the present invention is an image processing system, which is characterized by being composed of the following devices:
- the camera body adopts the camera body described in item 2 or 3 of the present invention. Under the condition that there is no visible light during the production of the blast furnace, it receives the infrared light emitted by the charge, and converts it into the infrared of the furnace surface and adjacent equipment Image
- the computer performs image processing on the image to obtain quantitative data of airflow distribution and temperature distribution on the material surface
- the color monitor converts the gray value of each point on the image into the temperature value according to the correlation between the intensity of the infrared light and the temperature of the measured object, and displays the material surface in the form of a pseudo-color image, a numerical image, and a graph. Temperature or air distribution.
- the technical features of the plug-in furnace kiln camera of the present invention will be further described below.
- the present invention does not adopt the method of setting the observation instrument outside the furnace in the prior art, but technologically adopts a camera inserted in the furnace for observation.
- the tube-type cooler provided in the plug-in kiln camera of the present invention supplies water from a valve and drains water from a drain port to ensure a cooling effect so that the camera operates at an allowable temperature.
- the plug-in furnace and kiln camera of the present invention adopts the dual gas protection method of the wind inside the peephole and the sweeping wind outside the peephole, so that the camera inserted inside the furnace shell can be exposed to high temperature, high pressure, high dust and high humidity Long-term continuous work under severe conditions.
- the double sealing structure of the valve and the sealing sleeve enables the camera to be maintained during the production process.
- the plug-in furnace kiln camera of the present invention is provided with a temperature measuring element near the upper part of the camera, and the working temperature of the camera can be grasped in real time by a digital thermometer.
- the miniature camera of the plug-in furnace and kiln camera according to the present invention can adopt a CCD with a wide photosensitive range as necessary. Under the condition of no visible light in the furnace during the production of the kiln, the CCD can receive infrared light emitted by the furnace charge in a certain temperature range. , Into the infrared image of the material surface and equipment in the furnace, and then reuse The computer performs image processing on this image to obtain quantitative data of airflow distribution and temperature distribution on the material surface.
- the plug-in furnace and kiln camera of the present invention uses a wide-angle lens with a viewing angle of 90 ° to 120 °, thereby expanding the observation range.
- a wide-angle lens with a viewing angle of 90 ° to 120 °, thereby expanding the observation range.
- only one camera can be used to observe the entire material surface and the working conditions of the equipment such as the chute or the big clock, thereby reducing equipment investment and operating costs and avoiding the use of more than two cameras
- the difficulty of synthesizing incomplete images at different angles has created favorable conditions for material image processing.
- the image processing system of the present invention is composed of the camera body of the present invention, a computer, and a color monitor. Therefore, the mechanical scanning method is not used to measure the temperature of each point on the material surface in the furnace, and then the temperature distribution map of the entire material surface is synthesized. Instead, a CCD with a wide photosensitive range is used. Under the condition of no visible light in the furnace during the production of the kiln, the CCD can receive the infrared light emitted by the charge in a certain temperature range and convert it into an infrared image of the material surface and equipment in the furnace. The infrared image of the entire material can be obtained at the same time, and then the infrared image is processed by a computer.
- the gray value of each point on the image is converted according to the correlation between the infrared light intensity and the temperature of the measured object.
- the temperature value the temperature of the material surface or the distribution of the air flow is displayed on a color monitor in the form of a pseudo color chart, a numerical chart, a graph, etc., so the operation can be guided on the basis of the above.
- the invention has the advantages that: a miniature camera with no moving parts is used to acquire infrared images in the furnace, the device has a small shape, low cost, convenient installation, simple maintenance, long life, small peephole aperture, narrow purge ring gap, The protective effect is good, the amount of protective gas is small, and the use cost is low.
- the plug-in furnace kiln camera and the image processing system using the plug-in furnace kiln camera of the present invention are applicable to various industrial furnaces, such as vertical furnaces and other furnaces typified by ironmaking blast furnaces. , Especially suitable for various volume of bell-type or double-material bell blast furnace.
- FIG. 1 is a general schematic diagram of a specific embodiment of the present invention.
- FIG. 2 is a schematic structural diagram of a camera body of the present invention.
- FIGS. 1 and 2 A specific embodiment of the present invention will now be described with reference to FIGS. 1 and 2.
- FIG. 1 is an overall schematic diagram of a specific embodiment of the present invention
- FIG. 2 is a schematic structural diagram of a camera body used in the above embodiment.
- the specific industrial furnace targeted by this embodiment is an ironmaking blast furnace.
- this embodiment also employs a camera composed of a camera body, a video camera 23, a monitor 24, and a digital thermometer 25; and a camera body, a color display 26, and a computer 27.
- Composition of image processing system As shown in FIG. 2, the camera body is composed of a camera gun 16, a tube cooler 9, a sealing device 15, a peep hole 21, a purge ring 22, a temperature measuring element 20, and a camera 19.
- the camera 19 is installed at the front end of the camera gun 16 and is inserted into the furnace through a tube cooler 9 installed on the short tube 4 of the furnace shell flange.
- the diameter of the tube cooler 9 ranges from 60 to 200 mm and the length ranges from 200 ⁇ 3000mm; Adopt dual gas protection of inside wind and purge wind outside peephole 21, so that the camera inserted into the furnace shell can be used under the harsh conditions of high temperature, high pressure, high dust and high humidity in the blast furnace.
- the diameter of the peephole 21 is ⁇ 3 ⁇ ⁇ 15 ⁇
- the width of the purge ring gap 28 formed between the purge ring 22 and the camera 19 is 0.2 ⁇ 3.0mm
- the valve 13 and the sealing sleeve 15 are used for both
- the sealed structure enables the camera to be overhauled during production.
- the camera's miniature camera uses a CCD with a wide photosensitive range.
- the CCD receives infrared light emitted by the furnace material 3 in a certain temperature range and converts it into the furnace material.
- the infrared images of the surface and equipment are processed by the computer 26 to obtain quantitative data reflecting the material surface 3 and its airflow distribution and temperature distribution.
- the camera uses a wide-angle lens with a viewing angle of 90 ⁇ 120 °, so only one camera can be used to observe the working condition of the entire material surface 3 and the cloth chute 2 adjacent to the equipment, reducing equipment investment and operating costs, avoiding It solves the problem of synthesizing two incomplete images with different angles when using two cameras, and creates favorable conditions for material image processing.
- a special camera 19 and a temperature measuring element 20 are installed at the front end of the camera gun 16 and inserted into the front end of the cooler through the sealing sleeve 15, the connecting tube 14 and the valve 13; the other protective gas (nitrogen or net gas) is passed from the valve 17 to the camera
- the inside of the barrel is blown into the furnace from the peep hole 21 at the front end of the camera to ensure that the camera lens is isolated from the gas in the furnace, so that the camera can continue for a long time under the harsh conditions of high temperature, high pressure, high dust and high humidity in the blast furnace. jobs.
- the camera gun 16 When the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to be repaired, since the camera or other components need to
- the angle of view of the camera lens is 90 ⁇ 120 °, only one camera can be used to observe the working conditions of the entire material level 3, the chute 2 and the probe in the furnace, creating favorable conditions for the image processing of the material level.
- the video signal of the camera 19 and the signal of the temperature measuring element 20 are taken out from the sealed terminal cap 18 and sent to the duty room through a special cable, and connected to the video camera 23, monitor 24, and digital thermometer 25, so that the operator can See and record the working conditions of the equipment in the furnace such as the material level 3 and the chute 2 in real time, and understand the working condition of the camera 19 according to the temperature.
- the video signal is simultaneously connected to the computer 26 for image processing, and the quantitative data of the airflow distribution and temperature distribution on the material surface are displayed on the color monitor 27 in the form of a pseudo color chart, a numerical chart, a distribution curve, and the like, for guiding the operation of the blast furnace.
- the inventors conducted industrial experiments on a plurality of ironmaking blast furnaces according to the above-mentioned embodiment. Practice has proved that the plug-in furnace kiln camera and image processing system of the present invention have the following advantages in addition to the beneficial effects already described above:
- the camera of the present invention can be used continuously for a long time; Perform maintenance and repairs when production is stopped.
- plug-in furnace and kiln camera and image processing system of the present invention are not only applicable to blast furnaces, but also applicable to various vertical shapes. Furnaces and other industrial furnaces.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Radiation Pyrometers (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003252424A AU2003252424A1 (en) | 2002-06-25 | 2003-06-25 | Plug-in kiln video camera and image processing system |
US10/519,420 US7719564B2 (en) | 2002-06-25 | 2003-06-25 | Plug-in kiln video camera and image processing system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN02121548.0 | 2002-06-25 | ||
CNB021215480A CN1156149C (zh) | 2002-06-25 | 2002-06-25 | 一种插入式炉窑摄象仪 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004002136A1 true WO2004002136A1 (fr) | 2003-12-31 |
Family
ID=4745000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2003/000491 WO2004002136A1 (fr) | 2002-06-25 | 2003-06-25 | Camera video a brancher pour four et systeme de traitement d'images |
Country Status (5)
Country | Link |
---|---|
US (1) | US7719564B2 (zh) |
CN (1) | CN1156149C (zh) |
AU (1) | AU2003252424A1 (zh) |
RU (1) | RU2297726C2 (zh) |
WO (1) | WO2004002136A1 (zh) |
Families Citing this family (24)
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CN100430703C (zh) * | 2005-02-28 | 2008-11-05 | 宝山钢铁股份有限公司 | 高炉红外热像仪防护装置 |
US8199193B2 (en) * | 2008-10-30 | 2012-06-12 | Caskol, Llc | Video camera inspection system for roller hearth heat treating furnaces and the like |
US20100165103A1 (en) * | 2008-12-30 | 2010-07-01 | Paul Andreas Adrian | Camera Monitoring Systems And Methods For Electromagnetic Dryer Applicators |
US8300880B2 (en) * | 2009-06-05 | 2012-10-30 | Ali Esmaili | System and method for temperature data acquisition |
EP3479933A1 (en) * | 2009-09-17 | 2019-05-08 | Sciaky Inc. | Electron beam layer manufacturing apparatus |
EP2498935B1 (en) * | 2009-11-13 | 2015-04-15 | Sciaky Inc. | Process for layer manufacturing a three-dimensional work piece using scanning electron monitored with closed loop control |
US8219247B2 (en) * | 2009-11-19 | 2012-07-10 | Air Products And Chemicals, Inc. | Method of operating a furnace |
AU2011233678B2 (en) | 2010-03-31 | 2015-01-22 | Sciaky, Inc. | Raster methodology, apparatus and system for electron beam layer manufacturing using closed loop control |
KR101404715B1 (ko) * | 2013-02-04 | 2014-06-09 | 한국수력원자력 주식회사 | 유리 용융로 온도 측정장치 |
CN103215053A (zh) * | 2013-03-26 | 2013-07-24 | 鞍钢股份有限公司 | 一种干熄焦炉高温监测装置及方法 |
CN103667562B (zh) * | 2013-12-10 | 2016-03-02 | 天津市三特电子有限公司 | 内置单向阀式高温成像自动保护装置 |
CN104197997A (zh) * | 2014-09-15 | 2014-12-10 | 常州宝仪机电设备有限公司 | 图像式流量测控系统 |
CN109114996B (zh) * | 2016-04-01 | 2020-01-03 | 雷波明信实业发展有限公司 | 一种窥视镜镜筒 |
US11215574B2 (en) | 2016-05-09 | 2022-01-04 | Haldor Topsøe A/S | Monitoring of heated tubes |
CN109655460A (zh) * | 2019-02-18 | 2019-04-19 | 中国华能集团清洁能源技术研究院有限公司 | 一种应用于高温高压环境下的内窥视监测系统 |
CN109900364B (zh) * | 2019-02-19 | 2020-08-07 | 常州陆铭光电科技有限公司 | 测温型工业电视系统 |
US11262641B2 (en) * | 2019-12-13 | 2022-03-01 | Pony Ai Inc. | Overheating protection for sensor housing |
RU2739721C1 (ru) * | 2020-01-09 | 2020-12-28 | Общество С Ограниченной Ответственностью "Газпром Трансгаз Краснодар" | Внутритрубный диагностический снаряд с устройством защиты объектива видеокамеры от загрязнений |
CN114630074A (zh) * | 2020-12-11 | 2022-06-14 | 秦皇岛秦冶重工有限公司 | 一种阀腔监控系统 |
CN112813216A (zh) * | 2021-04-02 | 2021-05-18 | 常州陆铭光电科技有限公司 | 一种吹扫式高炉红外热成像仪 |
CN217383806U (zh) * | 2022-03-14 | 2022-09-06 | 银川隆基光伏科技有限公司 | 一种连接组件、图像采集装置及高温炉 |
CN115524014B (zh) * | 2022-10-17 | 2023-04-07 | 湖南力得尔智能科技股份有限公司 | 基于超高温智能测温传感器的温度检测系统 |
CN115941892B (zh) * | 2022-10-26 | 2023-11-21 | 中复神鹰碳纤维西宁有限公司 | 一种高温粉尘低可见度环境用可变焦视频监控装置 |
CN115790767A (zh) * | 2022-10-28 | 2023-03-14 | 南京玻璃纤维研究设计院有限公司 | 岩棉电熔炉液位监测装置及方法、岩棉电熔炉 |
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2002
- 2002-06-25 CN CNB021215480A patent/CN1156149C/zh not_active Expired - Lifetime
-
2003
- 2003-06-25 WO PCT/CN2003/000491 patent/WO2004002136A1/zh not_active Application Discontinuation
- 2003-06-25 US US10/519,420 patent/US7719564B2/en active Active
- 2003-06-25 AU AU2003252424A patent/AU2003252424A1/en not_active Abandoned
- 2003-06-25 RU RU2004139018/09A patent/RU2297726C2/ru active
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CN1051939A (zh) * | 1990-11-17 | 1991-06-05 | 中国科学院上海技术物理研究所 | 高炉炉顶料面温度摄象仪 |
JPH0588094A (ja) * | 1991-09-25 | 1993-04-09 | Amano Kenkyusho:Kk | 暗所撮影テレビカメラ装置 |
EP0696751A1 (en) * | 1994-03-15 | 1996-02-14 | AMANO & ASSOCIATES INCORPORATED | Monitoring camera |
CN1118549A (zh) * | 1994-09-05 | 1996-03-13 | 株式会社天野研究所 | 监视用摄象机 |
CN2295762Y (zh) * | 1997-05-13 | 1998-10-28 | 杨敬顺 | 高炉内部监控装置 |
Also Published As
Publication number | Publication date |
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AU2003252424A8 (en) | 2004-01-06 |
CN1156149C (zh) | 2004-06-30 |
CN1384662A (zh) | 2002-12-11 |
AU2003252424A1 (en) | 2004-01-06 |
RU2297726C2 (ru) | 2007-04-20 |
US20060050147A1 (en) | 2006-03-09 |
RU2004139018A (ru) | 2005-08-20 |
US7719564B2 (en) | 2010-05-18 |
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