CN114561502A - Device and method for observing internal working state of blast furnace taphole - Google Patents
Device and method for observing internal working state of blast furnace taphole Download PDFInfo
- Publication number
- CN114561502A CN114561502A CN202210376095.1A CN202210376095A CN114561502A CN 114561502 A CN114561502 A CN 114561502A CN 202210376095 A CN202210376095 A CN 202210376095A CN 114561502 A CN114561502 A CN 114561502A
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- CN
- China
- Prior art keywords
- blast furnace
- detection tube
- camera
- taphole
- compressed air
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- 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
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/12—Opening or sealing the tap holes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
Abstract
The invention discloses a device and a method for observing the internal working state of a blast furnace taphole, wherein the device comprises a detection tube and a camera, one end of the detection tube is inserted into the blast furnace taphole, and the other end of the detection tube extends out of the blast furnace taphole and is closed; one end of the detection tube extending out of the blast furnace iron notch is provided with a peephole, and the peephole is opposite to the camera of the camera; the tail part of the detection tube, which extends out of the outer part of the blast furnace taphole, is sequentially provided with a compressed air interface and an oxygen interface, the compressed air interface is connected into a compressed air source, and the oxygen interface is connected into an oxygen source. According to the invention, the stainless steel detection tube is arranged at the iron notch in the initial blowing-in stage of the blast furnace, the camera is arranged at the tail end of the detection tube, and then the imaging picture of the camera is introduced into the video picture of the blast furnace operation chamber, so that the coke burning and slag iron melting conditions in the iron notch can be visually seen in the blowing-in process of the blast furnace, the tapping time of the blast furnace can be accurately judged, and the device has the advantages of simple structure, low implementation cost, safety, reliability and high popularization and application value.
Description
Technical Field
The invention belongs to the field of metallurgical equipment, relates to a device for observing the internal working state of a blast furnace taphole in the early stage of tapping in the overhaul and the medium maintenance of a blast furnace, and also discloses a method for observing the internal working state of the blast furnace taphole.
Background
When the blast furnace is opened during large and medium maintenance, whether the iron slag generated in the furnace can be smoothly discharged is an important guarantee for the safe and smooth opening of the blast furnace. At present, most methods are adopted for judging the tapping time of a blast furnace after generated iron slag is sprayed out of an iron notch through a blowing guide pipe, coal gas sprayed out by the method for the air-blowing iron notch seriously influences the safety of a working place, and meanwhile, the condition of melting the iron slag in the furnace cannot be accurately judged, so that safety accidents caused by untimely discharge of the iron slag are very easy to cause.
Disclosure of Invention
The invention aims to provide a device for observing the internal working state of a blast furnace taphole in order to accurately judge the melting condition of iron slag in a blast furnace and further determine the tapping time of the blast furnace.
Another object of the present invention is to provide a method for observing the operating conditions inside a blast furnace taphole.
In order to realize the purpose, the invention adopts the following technical scheme:
a device for observing the internal working state of a blast furnace taphole comprises a detection tube and a camera, wherein one end of the detection tube is inserted into the blast furnace taphole, the other end of the detection tube extends out of the blast furnace taphole, and the end part of the detection tube is closed; one end of the detection tube extending out of the blast furnace taphole is provided with a peephole, and the peephole is opposite to a camera of the camera; the tail part of the detection tube, which extends out of the outer part of the blast furnace taphole, is sequentially provided with a compressed air interface and an oxygen interface, the compressed air interface is connected into a compressed air source, and the oxygen interface is connected into an oxygen source.
As a further improvement of the technical scheme of the invention, a heat insulation sleeve is sleeved outside the camera.
Further, the detecting tube is a stainless steel tube.
Furthermore, the end part of one end of the detection tube inserted into the blast furnace taphole is wedge-shaped.
The invention provides a method for observing the internal working state of a blast furnace taphole by using the device, which comprises the following steps:
firstly, extending a detection tube into a blast furnace taphole, sealing a gap between the blast furnace taphole and the detection tube by pouring materials, and installing a camera;
secondly, introducing compressed air into the detection pipe through a compressed air interface, introducing oxygen into the detection pipe through an oxygen interface, and inputting the oxygen into the blast furnace through the compressed air pressure to combust coke in the taphole area of the blast furnace;
and step three, introducing the imaging picture of the camera into a video picture of a blast furnace operating room, observing the melting condition of the iron slag and the burning condition of coke in the iron notch of the blast furnace through the camera, and judging the iron tapping time of the blast furnace according to the melting condition of the iron slag in the iron notch of the blast furnace.
Further, the total pressure of the compressed air and the oxygen is greater than the internal pressure of the blast furnace.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention replaces the operation of initially installing a steel pipe and waiting for the iron notch to be sprayed, and the compressed air is introduced into the blast furnace iron notch through the detecting pipe, so that on one hand, the function of cooling the detecting pipe can be realized, the imaging of a camera is prevented from being influenced, on the other hand, the compressed air is used for applying pressure, oxygen is introduced into the blast furnace iron notch through the detecting pipe, coke in the blast furnace iron notch area is combusted, the iron notch is prevented from being blocked, and then the combustion condition of the coke in the iron notch and the melting condition of the iron slag are observed through the camera, so that the tapping time of the blast furnace is determined, and the equipment is simple.
2. The invention can directly introduce the situation that the blast furnace has no slag iron to melt into the video picture of the blast furnace operation chamber through camera shooting and imaging without observing in the taphole area by personnel, and the method has simple operation, safety and reliability.
3. The device has a simple manufacturing structure, can be obtained on site, and has low implementation cost and high popularization and application value because the gap between the blast furnace taphole and the stainless steel probe tube is sealed by pouring materials.
Drawings
FIG. 1 is a schematic structural view of the device for observing the internal working state of a blast furnace taphole according to the present invention.
In the figure: 1. a camera; 2. a peephole; 3. a probe tube; 4. a compressed air interface; 5. an oxygen interface.
Detailed Description
The structure and operation of the device of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, the device for observing the internal working state of the blast furnace taphole provided by the invention comprises a detection tube 3 and a camera 1 arranged at the nozzle of the detection tube, wherein one end of the detection tube 3 is inserted into the blast furnace taphole, and the other end of the detection tube extends out of the blast furnace taphole and is closed; one end of the detection tube 3 extending out of the blast furnace taphole is provided with a peephole 2, the peephole 2 is opposite to a camera of the camera 1, and a heat insulation sleeve (which can be realized by the prior art and is not shown in the figure) is sleeved outside the camera; the tail part of the detecting tube 3 extending out of the outer part of the blast furnace taphole is sequentially provided with a compressed air interface 4 and an oxygen interface 5, the compressed air interface 4 is connected into a compressed air source, and the oxygen interface 5 is connected into an oxygen source.
In order to easily obtain local materials, the detection tube 3 is a high-temperature-resistant stainless steel tube. Meanwhile, in order to facilitate the insertion of the blast furnace iron notch, the end part of the probe tube 3 in the blast furnace iron notch is processed into a wedge shape.
Furthermore, the end part of one end of the detection tube 3 inserted into the blast furnace taphole is wedge-shaped.
The method for observing the internal working state of the blast furnace taphole by using the device comprises the following steps:
the detection tube 3 is extended into a blast furnace iron notch, a pouring material is adopted to seal a gap between the blast furnace iron notch and the detection tube 3, and the camera 1 is installed; compressed air is firstly introduced into the detection tube 3 through the compressed air interface 4, then oxygen is introduced into the detection tube 3 through the oxygen interface 5, and the total pressure of the compressed air and the oxygen is greater than the internal pressure of the blast furnace. Cooling the detecting tube 3 by compressed air, and inputting oxygen into the blast furnace by using the pressure of the compressed air to burn coke in the taphole area of the blast furnace; the imaging picture of the camera 1 is introduced into the video picture of the blast furnace operating room, the melting condition of the iron slag and the burning condition of coke in the iron notch of the blast furnace are observed through the camera, and the iron tapping time of the blast furnace is judged according to the melting condition of the iron slag in the iron notch of the blast furnace. And (4) after the blast furnace is prepared with tapping conditions, pulling out the device, and tapping at a drill hole. The method specifically comprises the following steps:
the coke burning and the slag iron forming in the blast furnace are observed from the image of the camera 1. And calculating the iron content of each batch of materials charged into the blast furnace and the smelting period of the blast furnace by combining with the material balance of the blast furnace, and calculating the total iron content in the blast furnace according to the product of the number of the charged batches of the blast furnace per hour and the iron content of each batch of materials. (for example, each batch of the blast furnace contains 10 tons of iron, the hearth capacity of the blast furnace is 300 tons, the blast furnace needs tapping when reaching 300 tons, namely, the tapping condition is prepared in the blast furnace after 30 batches are added, the material speed of the blast furnace per hour is calculated according to 3 batches, and the tapping condition is prepared in the blast furnace after 10 hours is theoretically calculated). And (3) observing the melting condition of the iron slag in the blast furnace imaging after 10 hours, immediately pulling out the camera device when flowing liquid iron slag is observed in the imaging, and opening an iron notch by oxygen for tapping.
Claims (6)
1. The utility model provides a device for observing blast furnace iron notch internal working condition which characterized in that: the device comprises a detection tube and a camera, wherein one end of the detection tube is inserted into a blast furnace taphole, and the other end of the detection tube extends out of the blast furnace taphole and is closed at the end part; one end of the detection tube extending out of the blast furnace taphole is provided with a peephole, and the peephole is opposite to a camera of the camera; the tail part of the detection tube, which extends out of the outer part of the blast furnace taphole, is sequentially provided with a compressed air interface and an oxygen interface, the compressed air interface is connected into a compressed air source, and the oxygen interface is connected into an oxygen source.
2. The apparatus for observing the operating conditions inside a blast furnace taphole according to claim 1, characterized in that: and the camera is externally sleeved with a heat insulation sleeve.
3. The apparatus for observing the operating conditions inside a blast furnace taphole according to claim 1, characterized in that: the detection tube is a stainless steel tube.
4. An apparatus for observing the operating conditions inside a blast furnace taphole according to any of the claims 1-3, characterized in that: the end part of one end of the detection tube inserted into the blast furnace taphole is wedge-shaped.
5. A method for observing the internal operating conditions of a blast furnace taphole using the apparatus of claim 1, comprising the steps of:
firstly, extending a detection tube into a blast furnace taphole, sealing a gap between the blast furnace taphole and the detection tube by pouring materials, and installing a camera;
secondly, introducing compressed air into the detection pipe through a compressed air interface, introducing oxygen into the detection pipe through an oxygen interface, and inputting the oxygen into the blast furnace through the compressed air pressure to combust coke in the taphole area of the blast furnace;
and step three, introducing the imaging picture of the camera into a video picture of a blast furnace operating room, observing the melting condition of the iron slag and the burning condition of coke in the iron notch of the blast furnace through the camera, and judging the iron tapping time of the blast furnace according to the melting condition of the iron slag in the iron notch of the blast furnace.
6. The method for observing the operating conditions inside a blast furnace taphole according to claim 5, characterized in that the total pressure of the compressed air and oxygen is higher than the internal pressure of the blast furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210376095.1A CN114561502A (en) | 2022-04-11 | 2022-04-11 | Device and method for observing internal working state of blast furnace taphole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210376095.1A CN114561502A (en) | 2022-04-11 | 2022-04-11 | Device and method for observing internal working state of blast furnace taphole |
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|---|---|
| CN114561502A true CN114561502A (en) | 2022-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210376095.1A Pending CN114561502A (en) | 2022-04-11 | 2022-04-11 | Device and method for observing internal working state of blast furnace taphole |
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| CN (1) | CN114561502A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1703241A1 (en) * | 2005-03-16 | 2006-09-20 | CENTRE DE RECHERCHES METALLURGIQUES asbl - CENTRUM VOOR RESEARCH IN DE METALLURGIE vzw | Device and process for the dynamic combustion control of a burner of an electric arc furnace |
| CN200988844Y (en) * | 2006-12-22 | 2007-12-12 | 宝山钢铁股份有限公司 | Blast furnace wind inlet monitor |
| CN202954055U (en) * | 2012-09-22 | 2013-05-29 | 内蒙古科技大学 | Blast-furnace tuyere temperature measuring camera-shooting spying combined monitoring device |
| CN103509902A (en) * | 2013-09-25 | 2014-01-15 | 马钢(集团)控股有限公司 | Video and temperature monitoring device and method for blast-furnace tuyere |
| CN111979370A (en) * | 2020-08-28 | 2020-11-24 | 天津钢铁集团有限公司 | Blast furnace blow-in oxygen lance and blow-in method |
| CN217324152U (en) * | 2022-04-11 | 2022-08-30 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Device for observing internal working state of blast furnace taphole |
-
2022
- 2022-04-11 CN CN202210376095.1A patent/CN114561502A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1703241A1 (en) * | 2005-03-16 | 2006-09-20 | CENTRE DE RECHERCHES METALLURGIQUES asbl - CENTRUM VOOR RESEARCH IN DE METALLURGIE vzw | Device and process for the dynamic combustion control of a burner of an electric arc furnace |
| CN200988844Y (en) * | 2006-12-22 | 2007-12-12 | 宝山钢铁股份有限公司 | Blast furnace wind inlet monitor |
| CN202954055U (en) * | 2012-09-22 | 2013-05-29 | 内蒙古科技大学 | Blast-furnace tuyere temperature measuring camera-shooting spying combined monitoring device |
| CN103509902A (en) * | 2013-09-25 | 2014-01-15 | 马钢(集团)控股有限公司 | Video and temperature monitoring device and method for blast-furnace tuyere |
| CN111979370A (en) * | 2020-08-28 | 2020-11-24 | 天津钢铁集团有限公司 | Blast furnace blow-in oxygen lance and blow-in method |
| CN217324152U (en) * | 2022-04-11 | 2022-08-30 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Device for observing internal working state of blast furnace taphole |
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