CN112017391A - Flame fire extinguishing detection method for blast furnace gas diffusion chimney - Google Patents
Flame fire extinguishing detection method for blast furnace gas diffusion chimney Download PDFInfo
- Publication number
- CN112017391A CN112017391A CN202010768023.2A CN202010768023A CN112017391A CN 112017391 A CN112017391 A CN 112017391A CN 202010768023 A CN202010768023 A CN 202010768023A CN 112017391 A CN112017391 A CN 112017391A
- Authority
- CN
- China
- Prior art keywords
- flame
- blast furnace
- furnace gas
- gas diffusion
- temperature
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000009792 diffusion process Methods 0.000 title claims abstract description 34
- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 206010017740 Gas poisoning Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
- G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/002—Evacuating and treating of exhaust gases
-
- 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
Abstract
The invention discloses a fire extinguishing detection method for a flame of a blast furnace gas diffusion chimney, which comprises the following steps that thermal infrared imager monitoring software on a server controls the thermal infrared imager to obtain real-time flame data of the blast furnace gas diffusion chimney, and the real-time flame data are written into a control unit; in the control unit, the highest temperature in the real-time data is used as a reference, and based on the comparison of temperature data during normal combustion and flame extinguishment, a set value of an extinguishment temperature and a set value of a temperature change rate are determined, programming is carried out in the control unit through the temperature value, and when certain conditions are met, the flame extinguishment is judged; and making fire extinguishing acousto-optic alarm signal display on the operation end. The invention can solve the problem that the fire extinguishing time of the flame of the existing blast furnace gas diffusion chimney is difficult to control.
Description
Technical Field
The invention relates to the technical field of steel manufacturing equipment, in particular to a fire extinguishing detection method for flames of a blast furnace gas diffusion chimney.
Background
When the blast furnace gas in iron making is diffused through the chimney, ignition and combustion are needed, otherwise, the diffused blast furnace gas can affect the personal safety of workers around the chimney. At present, three methods are mainly used for observing whether blast furnace gas burns on a diffusing chimney, one method is observation through human eyes, but the method is difficult to identify in the daytime, only can be intermittently checked, and is difficult to monitor in place in real time; the second is that a thermocouple is arranged at the top of the chimney to detect the flame temperature through temperature judgment, certain hysteresis exists, and the flame cannot be accurately identified sometimes due to the influence of the wind direction; the third is that the detection accuracy is not enough and is easily affected by wind direction by an ultraviolet flame detector. The three methods have certain limitations, and the judgment on the fire extinguishing of the flame of the blast furnace gas diffusion chimney requires to ensure the accuracy and the reliability, otherwise, the risk of gas poisoning is greatly increased.
Disclosure of Invention
The invention aims to solve the problem of providing a flame extinguishing detection method for a blast furnace gas diffusion chimney, so as to solve the problem that the flame extinguishing time of the conventional blast furnace gas diffusion chimney is difficult to control.
In order to solve the problems, the technical scheme of the invention is as follows: the flame fire extinguishing detection method for the blast furnace gas diffusion chimney comprises the steps of detecting the flame of the blast furnace gas diffusion chimney by using a flame fire extinguishing detection device;
the flame fire extinguishing detection device comprises an infrared thermal imager, a camera is arranged in a range of 1-100 m away from a blast furnace gas diffusion chimney and is aligned to a flame area on the top of the blast furnace gas diffusion chimney, the infrared thermal imager is connected with a server provided with infrared thermal camera monitoring software through an Ethernet communication interface, and the server is respectively connected with a video monitoring end, a control unit and an operation end through a switch and Ethernet communication;
the detection process comprises the following steps:
A. the thermal infrared imager monitoring software on the server controls the thermal infrared imager to acquire real-time data of the flame of the blast furnace gas diffusion chimney, and the real-time data is written into the control unit;
B. in the control unit, the highest temperature in the real-time data is used as a reference, based on the comparison of temperature data during normal combustion and flame extinguishment, a set value of an extinguishment temperature and a set value of a temperature change rate are determined, the temperature value is programmed in the control unit, and when the real-time temperature is less than or equal to the set value of the extinguishment temperature and the temperature change rate is greater than the set value of the temperature change rate, the time meeting the condition lasts for more than 5 seconds, the flame extinguishment is judged; the set value of the fire extinguishing temperature and the set value of the temperature change rate are different according to different circled flame combustion areas and are analyzed and determined according to historical data;
C. and a fire extinguishing acousto-optic alarm signal display is made on the operation end to prompt the blast furnace gas diffusion chimney to extinguish fire and take measures.
In the above technical solution, a more specific solution may be: the control unit is a PLC.
Further: the thermal infrared imager is arranged at a position 100 meters away from a blast furnace gas diffusion chimney.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the blast furnace gas diffusion chimney flame fire extinguishing detection method is based on real-time data collected by a thermal infrared imager, meets the conditions that the real-time temperature is less than or equal to a fire extinguishing temperature set value and the temperature change rate is greater than a temperature change rate set value, and the time of meeting the conditions lasts for more than 5 seconds, so that the fire extinguishing is judged.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
the labels in the figure are: the system comprises a blast furnace gas diffusion chimney 1, a thermal infrared imager 2, a server 3, a switch 4, a video monitoring end computer 5, a control unit 6 and an operation end computer 7.
Detailed Description
The embodiments of the invention will be described in further detail with reference to the accompanying drawings:
in the method for detecting the flame extinguishment of the blast furnace gas diffusion chimney as shown in fig. 1, a flame extinguishment detection device is used for detecting the flame of the blast furnace gas diffusion chimney.
The flame fire extinguishing detection device comprises an infrared thermal imager 2 which is 100 meters away from a blast furnace gas diffusion chimney and is provided with a set of lens to be aligned with a flame area on the top of the blast furnace gas diffusion chimney 1, the infrared thermal imager 2 is connected with a server 3 provided with infrared thermal camera monitoring software through an Ethernet communication interface, the server 3 is respectively connected with a video monitoring end computer 5, a control unit 6 and an operation end computer 7 through a switch 4 and Ethernet communication, and the control unit is a PLC.
The detection process comprises the following steps:
A. the thermal infrared imager monitoring software on the server 3 controls the thermal infrared imager 2 to obtain real-time data of flames of the blast furnace gas diffusion chimney 1, a flame combustion area at the top of the blast furnace gas diffusion chimney is drawn in a software interface, real-time temperature data of the flames, including the highest temperature, the lowest temperature and the average temperature, are obtained, and are written into the control unit 6 through the switch.
B. In the control unit 6, the highest temperature in the real-time data is taken as the reference, the set value of the fire extinguishing temperature and the set value of the temperature change rate are determined based on the comparison of the temperature data during normal combustion and flame fire extinguishing, the temperature value is programmed in the control unit, and when the real-time temperature is less than or equal to the set value of the fire extinguishing temperature, the temperature change rate is greater than the set value of the temperature change rate, and the time meeting the condition lasts for more than 5 seconds, the flame fire extinguishing is judged; the set value of the fire extinguishing temperature and the set value of the temperature change rate are different according to different circled flame combustion areas and are determined according to historical data analysis.
C. And a fire extinguishing acousto-optic alarm signal display is made on the operation end computer 7 through the switchboard 4 to prompt the blast furnace gas emission chimney to extinguish fire and take measures.
The blast furnace gas diffusion chimney flame fire extinguishing detection method is based on real-time data collected by a thermal infrared imager, meets the conditions that the real-time temperature is less than or equal to a fire extinguishing temperature set value and the temperature change rate is greater than a temperature change rate set value, and the time of meeting the conditions lasts for more than 5 seconds, so that the fire extinguishing is judged.
In other embodiments, the thermal infrared imager with the lens aligned with the flame area on the top of the blast furnace gas emission chimney can also be installed anywhere from 1 meter to 100 meters away from the blast furnace gas emission chimney.
Claims (3)
1. A blast furnace gas diffusion chimney flame fire extinguishing detection method is characterized in that: comprises using a flame fire-extinguishing detection device to detect the flame of a blast furnace gas diffusion chimney;
the flame fire extinguishing detection device comprises an infrared thermal imager, a camera is arranged in a range of 1-100 m away from a blast furnace gas diffusion chimney and is aligned to a flame area on the top of the blast furnace gas diffusion chimney, the infrared thermal imager is connected with a server provided with infrared thermal camera monitoring software through an Ethernet communication interface, and the server is respectively connected with a video monitoring end, a control unit and an operation end through a switch and Ethernet communication;
the detection process comprises the following steps:
A. the thermal infrared imager monitoring software on the server controls the thermal infrared imager to acquire real-time data of the flame of the blast furnace gas diffusion chimney, and the real-time data is written into the control unit;
B. in the control unit, the highest temperature in the real-time data is used as a reference, based on the comparison of temperature data during normal combustion and flame extinguishment, a set value of an extinguishment temperature and a set value of a temperature change rate are determined, the temperature value is programmed in the control unit, and when the real-time temperature is less than or equal to the set value of the extinguishment temperature and the temperature change rate is greater than the set value of the temperature change rate, the time meeting the condition lasts for more than 5 seconds, the flame extinguishment is judged; the set value of the fire extinguishing temperature and the set value of the temperature change rate are different according to different circled flame combustion areas and are analyzed and determined according to historical data;
C. and a fire extinguishing acousto-optic alarm signal display is made on the operation end to prompt the blast furnace gas diffusion chimney to extinguish fire and take measures.
2. The blast furnace gas diffusion chimney flame fire extinguishing detection method according to claim 1, characterized in that: the control unit is a PLC.
3. The blast furnace gas diffusion chimney flame fire extinguishing detection method according to claim 1 or 2, characterized in that: the thermal infrared imager is arranged at a position 100 meters away from a blast furnace gas diffusion chimney.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010768023.2A CN112017391A (en) | 2020-08-03 | 2020-08-03 | Flame fire extinguishing detection method for blast furnace gas diffusion chimney |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010768023.2A CN112017391A (en) | 2020-08-03 | 2020-08-03 | Flame fire extinguishing detection method for blast furnace gas diffusion chimney |
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| Publication Number | Publication Date |
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| CN112017391A true CN112017391A (en) | 2020-12-01 |
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| CN202010768023.2A Pending CN112017391A (en) | 2020-08-03 | 2020-08-03 | Flame fire extinguishing detection method for blast furnace gas diffusion chimney |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114495386A (en) * | 2022-02-21 | 2022-05-13 | 南京大谋光电科技有限公司 | Intelligent monitoring and early warning system and method for blast furnace gas diffusion |
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|---|---|---|---|---|
| CN202131322U (en) * | 2011-05-23 | 2012-02-01 | 启东市海信机械有限公司 | Novel diffusing and automatic ignition system for blast furnace gas |
| CN106247353A (en) * | 2016-08-08 | 2016-12-21 | 四川德胜集团钒钛有限公司 | A kind of blast furnace gas diffusing ignition system |
| CN107655350A (en) * | 2017-10-31 | 2018-02-02 | 岳阳钟鼎热工电磁科技有限公司 | A kind of novel industrial furnace monitoring diagnosis device and method |
| CN108872734A (en) * | 2018-04-26 | 2018-11-23 | 首钢京唐钢铁联合有限责任公司 | Blast-furnace gas diffusing tower detecting method, device and equipment |
| CN209147111U (en) * | 2018-10-22 | 2019-07-23 | 湖南省冶金规划设计院有限公司 | A kind of metallurgical gases ignition bleeding device |
-
2020
- 2020-08-03 CN CN202010768023.2A patent/CN112017391A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202131322U (en) * | 2011-05-23 | 2012-02-01 | 启东市海信机械有限公司 | Novel diffusing and automatic ignition system for blast furnace gas |
| CN106247353A (en) * | 2016-08-08 | 2016-12-21 | 四川德胜集团钒钛有限公司 | A kind of blast furnace gas diffusing ignition system |
| CN107655350A (en) * | 2017-10-31 | 2018-02-02 | 岳阳钟鼎热工电磁科技有限公司 | A kind of novel industrial furnace monitoring diagnosis device and method |
| CN108872734A (en) * | 2018-04-26 | 2018-11-23 | 首钢京唐钢铁联合有限责任公司 | Blast-furnace gas diffusing tower detecting method, device and equipment |
| CN209147111U (en) * | 2018-10-22 | 2019-07-23 | 湖南省冶金规划设计院有限公司 | A kind of metallurgical gases ignition bleeding device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114495386A (en) * | 2022-02-21 | 2022-05-13 | 南京大谋光电科技有限公司 | Intelligent monitoring and early warning system and method for blast furnace gas diffusion |
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