CN110791603B - Method and device for opening blast furnace air - Google Patents
Method and device for opening blast furnace air Download PDFInfo
- Publication number
- CN110791603B CN110791603B CN201911209019.6A CN201911209019A CN110791603B CN 110791603 B CN110791603 B CN 110791603B CN 201911209019 A CN201911209019 A CN 201911209019A CN 110791603 B CN110791603 B CN 110791603B
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- compressed air
- blast furnace
- poking
- opening
- valve
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 44
- 239000010959 steel Substances 0.000 claims abstract description 44
- 244000144985 peep Species 0.000 claims abstract description 15
- 208000008918 voyeurism Diseases 0.000 claims abstract description 9
- 230000000903 blocking effect Effects 0.000 claims abstract description 7
- 239000011449 brick Substances 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 21
- 238000010079 rubber tapping Methods 0.000 claims 1
- 238000007664 blowing Methods 0.000 abstract description 12
- 230000006378 damage Effects 0.000 abstract description 5
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- 239000011521 glass Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/16—Tuyéres
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
Abstract
The invention relates to the field of blast furnace tuyere safety, in particular to a blast furnace tuyere opening method and a blast furnace tuyere opening device, which have the technical scheme that: the blast furnace air opening method is applied to a blast furnace air opening device, the device comprises a peep hole valve, a compressed air filling bag and poking air opening round steel, and the rear end of the peep hole valve is connected with a peep hole lens; the method comprises the following steps: closing the peephole valve, and detaching the peephole lens at the rear end of the peephole valve; connecting the compressed air filling bag to the rear end of the peephole valve, and inserting a poking port round steel into the compressed air filling bag; and high-pressure compressed air is introduced into the compressed air filling bag, the peeping hole valve is opened, and the air inlet blocking stemming and the light brick are poked by poking the air inlet poking round steel into the air inlet. The invention has the advantages of preventing the high-temperature and high-pressure gas from back blowing out from the blowpipe viewing hole, avoiding the injury to operators and enhancing the safety performance of the blast furnace tuyere operation process.
Description
Technical Field
The invention relates to the field of blast furnace tuyere safety, in particular to a blast furnace tuyere opening method and device.
Background
The blast furnace tuyere is generally carried out in a blast furnace production state, and a blast furnace operator can judge the tuyere opening progress according to comprehensive smelting parameters such as the air quantity, the air pressure, the air speed and the like in the blast furnace. The air opening is a technology that stemming for blocking the air opening and light bricks are poked to form holes, and then the air opening is gradually blown through by means of high-speed high-pressure hot air blowing sent by a blowing pipe.
At present, a domestic blast furnace air opening generally adopts the following method: after the blast furnace is tapped and plugged, a plumber opens a blowpipe sight hole cover plate at the rear end of a tuyere blowpipe, the plumber inserts steel drills into the blowpipe, the steel drills are knocked by a hammer, stemming used for plugging the tuyere and light bricks are broken to form a channel, and then the steel drills are pulled out to rapidly close the blowpipe sight hole cover plate.
The scheme has the defects that: the method opens the air port, and because the hole of the blow tube is not sealed with the steel drill rod, the gap is larger, so that a large amount of high-pressure hot air is blown out from the hole of the blow tube, and operators are easy to burn. When the stemming and the light bricks of the air port are broken, the air flow in the furnace flows back into the blowpipe, so that the high-pressure high-speed hot air blown out from the visual hole of the blowpipe mixes a certain amount of coal gas, and serious harm is brought to operators.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a blast furnace tuyere opening method and device, which have the advantages of preventing high-temperature and high-pressure gas from back blowing out from a blowpipe viewing hole, avoiding injury to operators and enhancing the safety performance of the blast furnace tuyere opening operation process.
The blast furnace air opening method is applied to a blast furnace air opening device, the device comprises a peep hole valve, a compressed air filling bag and poking air opening round steel, and the rear end of the peep hole valve is connected with a peep hole lens; the method comprises the following steps:
closing the peephole valve, and detaching the peephole lens at the rear end of the peephole valve;
connecting the compressed air filling bag to the rear end of the peephole valve, and inserting a poking port round steel into the compressed air filling bag;
high-pressure compressed air is introduced into the compressed air filling bag, the peep hole valve is opened, the air inlet poking round steel is knocked into the air inlet, and the air inlet blocking stemming and the light brick are poked and broken
In one embodiment, the compressed air filling bag is provided with a compressed air branch pipe, and a compressed air control valve is arranged in the compressed air branch pipe; after the step of inserting the poking port round steel into the compressed air filling bag, the method further comprises the following steps:
and opening a compressed air control valve in the compressed air branch pipe, and enabling high-pressure compressed air to enter the compressed air filling bag from the compressed air branch pipe.
In one embodiment, after the step of striking the poking tuyere round steel into the tuyere, it further comprises:
and (3) extracting the round steel of the poking port to a compressed air filling bag, closing the peephole valve, closing the compressed air control valve, detaching the compressed air filling bag, and installing the peephole lens.
The utility model provides a blast furnace air opening device, includes peeping hole valve, peeping hole valve is connected with compressed air and fills the package, compressed air fills package one end and peeping hole valve intercommunication, and the opening has been seted up to the other end. The opening part is movably inserted with a poking air port round steel, the compressed air filling bag is provided with a compressed air branch pipe, and a compressed air control valve is arranged in the compressed air branch pipe.
In one embodiment, two compressed air branch pipes are provided, and the two compressed air branch pipes are symmetrically arranged on the compressed air filling bag.
In one embodiment, the compressed air branch has an inner diameter of 25mm and is connected to an external air source by a quick interface.
In one embodiment, the compressed air-filled bag is attached to the peephole valve by screws.
In one embodiment, the poking port round steel is provided with a poking strip balance rod.
In one embodiment, the opening is sleeved and embedded with a sealing ring, and the poking port round steel is movably inserted into the sealing ring.
In one embodiment, the sealing ring is a double-layer sealing ring, the sealing ring is an O-shaped sealing ring, and the inner diameter of the O-shaped sealing ring is the same as the outer diameter of the poking port round steel.
In summary, the invention has the following beneficial effects:
when the blast furnace needs to be opened, the compressed air is filled into the bag, so that high-pressure hot air in the blowing pipe is pressed, the damage to operators caused by back blowing of the high-pressure high-temperature hot air in the blowing pipe from the valve hole of the peeping hole in the process of opening the blast furnace is avoided, and the safety performance of the blast furnace opening operation process is enhanced.
Drawings
FIG. 1 is a schematic flow chart of a method for opening a blast furnace according to the present embodiment;
FIG. 2 is a schematic view showing the structure of a tuyere device of a blast furnace according to this embodiment;
fig. 3 is a schematic diagram of a blast furnace tuyere device according to this embodiment.
In the figure: 1. a wind gap blocking device; 2. a tuyere small sleeve; 3. a blast furnace wall; 4. an air supply blow pipe; 5. a blowpipe viewing aperture; 6. a blowpipe viewport cover plate; 7. peep hole valve; 8. a screw interface; 9. a compressed air-filled bag; 10. a compressed air control valve; 11. an O-shaped sealing ring; 12. a compressed air branch pipe; 13. a poking bar balance bar; 14. poking the round steel at the air port.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
A blast furnace tuyere method, as shown in fig. 1, comprising:
and 101, closing the peephole valve, and detaching the peephole lens at the rear end of the peephole valve.
And 102, connecting the compressed air filling bag to the rear end of the peephole valve, and inserting the poking round steel into the compressed air filling bag.
Step 103, high-pressure compressed air is introduced into the compressed air filling bag, the peep hole valve is opened, the air inlet poking round steel is used for poking air inlet, and the air inlet blocking stemming and the light bricks are poked and broken
The peep hole valve is closed and then the compressed air filling bag is arranged, so that high-pressure high-temperature air in the blow pipe is prevented from overflowing, after the poking hole round steel is inserted into the compressed air filling bag, high-pressure compressed air is introduced into the air compressing bag, and the high-pressure high-temperature air back blowing in the blow pipe can be pressed at the moment that the peep hole valve is opened, so that the damage to operators caused by the fact that the high-pressure high-temperature air is flushed out of the peep hole valve is avoided.
In one embodiment, the compressed air filling bag is provided with a compressed air branch pipe, and a compressed air control valve is arranged in the compressed air branch pipe; after the step of inserting the poking port round steel into the compressed air filling bag, the method further comprises the following steps:
and opening a compressed air control valve in the compressed air branch pipe, and enabling high-pressure compressed air to enter the compressed air filling bag from the compressed air branch pipe.
The time for the compressed air to enter the compressed air filling bag is controlled by the compressed air control valve, and the compressed air filling bag is disconnected when the air needs to be introduced, so that the waste of compressed air is avoided.
In one embodiment, after the step of striking the poking tuyere round steel into the tuyere, it further comprises:
and (3) extracting the round steel of the poking port to a compressed air filling bag, closing the peephole valve, closing the compressed air control valve, detaching the compressed air filling bag, and installing the peephole lens.
After the blast furnace is opened, the peeping hole valve is closed, the compressed air control valve can be closed, and air is stopped from being introduced into the compressed air filling bag, so that high-pressure high-temperature gas air is prevented from being flushed out.
As shown in fig. 2, the blast furnace tuyere device comprises a peephole valve 7, wherein the peephole valve 7 is connected with a compressed air filling bag 9, one end of the compressed air filling bag 9 is communicated with the peephole valve 7, and the other end of the compressed air filling bag is provided with an opening. The opening is movably inserted with a poking air port round steel 14, a compressed air branch pipe 12 is arranged on the compressed air filling bag 9, and a compressed air control valve 10 is arranged in the compressed air branch pipe 12.
As shown in fig. 3, when the blast furnace needs to be opened, a port number to be opened is selected, a blowpipe sight glass plate 6 is opened, a sight glass 7 at the rear end of an air supply blowpipe 4 is closed, a sight glass lens is detached, a screw thread interface 8 at the front end of a screw thread of a compressed air filling bag 9 is connected with a screw thread at the rear end of the sight glass 7, a poking round steel 14 is inserted into the compressed air filling bag 9 along a pore channel of an O-shaped sealing ring 11, compressed air control valves 10 at two sides of the compressed air filling bag 9 are opened, high-pressure compressed air is allowed to enter the compressed air filling bag 9, the sight glass valve 7 is opened, one end of the poking round steel 14 is knocked by a hammer until the poking round steel 14 penetrates through a tuyere blocking device 1 at the front end of a tuyere small sleeve 2 on the blast furnace wall 3, after the tuyere is opened, the poking round steel 14 is pumped back to the compressed air filling bag 9, the sight glass valve 7 is closed, and the two compressed air control valves 10 are closed. In the process of opening the air inlet, high-pressure compressed air enters the compressed air filling bag 9, so that high-pressure hot air in the blowing pipe is effectively pressed to be blown out in a back way along with the viewing hole 5 of the blowing pipe, and the operation personnel are injured.
In one embodiment, two compressed air branch pipes 12 are provided, and the two compressed air branch pipes 12 are symmetrically provided on the compressed air-filled bag.
The two compressed air branch pipes 12 are symmetrically arranged on the compressed air filling bag, and can better press high-pressure hot air in the blowing pipe when air is introduced.
In one embodiment, the compressed air manifold 12 has an internal diameter of 25mm and the compressed air manifold 12 is quickly interfaced with an external air source.
The quick connector is adopted to facilitate the installation and replacement of the compressed air branch pipe 12 and the compressed air filling bag.
In one embodiment, the compressed air-filled bag is attached to the peephole valve 7 by screws.
The compressed air filling bag is connected to the peephole valve 7 through a screw thread, and the air tightness of the joint between the compressed air filling bag and the peephole valve is high.
In one embodiment, a poking bar balance bar 13 is arranged on the poking port round steel 14.
When the iron hammer is used for beating the poking port round steel 14, the poking bar balance rod 13 is pulled to keep the balance state of the poking port round steel 14, so that the beating stability is improved.
In one embodiment, the opening is sleeved and embedded with a sealing ring, and the poking air port round steel 14 is movably inserted in the sealing ring.
The sealing ring is arranged at the opening, so that the air seal can be improved, and the back blowing pressing effect of the air in the compressed air filling bag on the high-pressure hot air can be improved.
In one embodiment, the seal ring is a double layer seal ring.
The sealing ring adopts double-layer arrangement to further improve the tightness of the opening.
In one embodiment, the seal ring is an O-ring 11, and the inner diameter of the O-ring 11 is the same as the outer diameter of the poke-hole round steel 14.
The O-shaped rubber sealing ring and the installation part are extremely simple in structure and standardized, so that the installation and replacement are more convenient and easier.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (10)
1. The blast furnace tuyere opening method is characterized by being applied to a blast furnace tuyere opening device, wherein the device comprises a peep hole valve, a compressed air filling bag and tuyere poking round steel, and the rear end of the peep hole valve is connected with a peep hole lens; the method comprises the following steps:
closing the peephole valve, and detaching the peephole lens at the rear end of the peephole valve;
connecting the compressed air filling bag to the rear end of the peephole valve, and inserting a poking port round steel into the compressed air filling bag;
and high-pressure compressed air is introduced into the compressed air filling bag, the peeping hole valve is opened, and the air inlet blocking stemming and the light brick are poked by poking the air inlet poking round steel into the air inlet.
2. The method for opening the blast furnace according to claim 1, wherein the compressed air filling bag is provided with a compressed air branch pipe, and a compressed air control valve is arranged in the compressed air branch pipe; after the step of inserting the poking port round steel into the compressed air filling bag, the method further comprises the following steps:
and opening a compressed air control valve in the compressed air branch pipe, and enabling high-pressure compressed air to enter the compressed air filling bag from the compressed air branch pipe.
3. The method for opening a blast furnace according to claim 1, further comprising, after the step of tapping the tuyere poking round steel into the tuyere:
and (3) extracting the round steel of the poking port to a compressed air filling bag, closing the peephole valve, closing the compressed air control valve, detaching the compressed air filling bag, and installing the peephole lens.
4. The blast furnace tuyere opening method according to claim 1, wherein the peeping hole valve is connected with a compressed air filling bag, one end of the compressed air filling bag is communicated with the peeping hole valve, the other end of the compressed air filling bag is provided with an opening, a tuyere poking round steel is movably inserted into the opening, a compressed air branch pipe is arranged on the compressed air filling bag and is communicated with an external air source, and a compressed air control valve is arranged in the compressed air branch pipe.
5. The method of opening a blast furnace according to claim 4, wherein two of the compressed air branch pipes are provided, and the two compressed air branch pipes are symmetrically provided on the compressed air-filled bag.
6. The method for opening a blast furnace according to claim 4, wherein: the internal diameter of the compressed air branch pipe is 25mm, and the compressed air branch pipe is connected with an external air source by adopting a quick interface.
7. The method of claim 1, wherein the compressed air-filled bag is connected to the peephole valve by screws.
8. The method for opening a blast furnace according to claim 1, wherein a poking bar balance bar is arranged on the poking round steel.
9. The method for opening the blast furnace according to claim 4, wherein a sealing ring is sleeved and embedded at the opening, and the poking-out port round steel is movably inserted in the sealing ring.
10. The method for opening a blast furnace according to claim 9, wherein the sealing ring is a double-layer sealing ring, the sealing ring is an O-shaped sealing ring, and the inner diameter of the O-shaped sealing ring is the same as the outer diameter of the poking round steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911209019.6A CN110791603B (en) | 2019-11-30 | 2019-11-30 | Method and device for opening blast furnace air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911209019.6A CN110791603B (en) | 2019-11-30 | 2019-11-30 | Method and device for opening blast furnace air |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110791603A CN110791603A (en) | 2020-02-14 |
| CN110791603B true CN110791603B (en) | 2024-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911209019.6A Active CN110791603B (en) | 2019-11-30 | 2019-11-30 | Method and device for opening blast furnace air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110791603B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100805719B1 (en) * | 2006-12-19 | 2008-02-21 | 주식회사 포스코 | Apparatus for penetrate tuyere of furnace shut |
| CN101724724A (en) * | 2010-01-26 | 2010-06-09 | 南通宝钢钢铁有限公司 | Blast-furnace vent device |
| CN202450107U (en) * | 2011-11-23 | 2012-09-26 | 福建三钢闽光股份有限公司 | Simple tuyere protection device |
| CN202830056U (en) * | 2012-09-29 | 2013-03-27 | 武汉钢铁(集团)公司 | Stokehole tuyere opening device of blast furnace |
| KR20160009148A (en) * | 2014-07-15 | 2016-01-26 | 주식회사 포스코 | Device for opening tuyere of blast furnace and method for opening tuyere using the same |
| CN207512200U (en) * | 2017-08-24 | 2018-06-19 | 江苏安全技术职业学院 | The pneumatic vent device of blast furnace |
| CN211079207U (en) * | 2019-10-24 | 2020-07-24 | 广东韶钢松山股份有限公司 | Air opening device |
| CN211079208U (en) * | 2019-11-30 | 2020-07-24 | 广东韶钢松山股份有限公司 | Blast furnace tuyere opening device |
-
2019
- 2019-11-30 CN CN201911209019.6A patent/CN110791603B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100805719B1 (en) * | 2006-12-19 | 2008-02-21 | 주식회사 포스코 | Apparatus for penetrate tuyere of furnace shut |
| CN101724724A (en) * | 2010-01-26 | 2010-06-09 | 南通宝钢钢铁有限公司 | Blast-furnace vent device |
| CN202450107U (en) * | 2011-11-23 | 2012-09-26 | 福建三钢闽光股份有限公司 | Simple tuyere protection device |
| CN202830056U (en) * | 2012-09-29 | 2013-03-27 | 武汉钢铁(集团)公司 | Stokehole tuyere opening device of blast furnace |
| KR20160009148A (en) * | 2014-07-15 | 2016-01-26 | 주식회사 포스코 | Device for opening tuyere of blast furnace and method for opening tuyere using the same |
| CN207512200U (en) * | 2017-08-24 | 2018-06-19 | 江苏安全技术职业学院 | The pneumatic vent device of blast furnace |
| CN211079207U (en) * | 2019-10-24 | 2020-07-24 | 广东韶钢松山股份有限公司 | Air opening device |
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| Title |
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| 高炉开风口机的设计及性能优化;何涛;王兴东;赵思;陈胜香;;机械设计与制造(第09期);第193-196页 * |
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| CN110791603A (en) | 2020-02-14 |
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