CN110760635A - Blast furnace cooling wall casing pipe gas plugging device and working method - Google Patents
Blast furnace cooling wall casing pipe gas plugging device and working method Download PDFInfo
- Publication number
- CN110760635A CN110760635A CN201911222207.2A CN201911222207A CN110760635A CN 110760635 A CN110760635 A CN 110760635A CN 201911222207 A CN201911222207 A CN 201911222207A CN 110760635 A CN110760635 A CN 110760635A
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- blast furnace
- sealing
- cooling water
- water pipe
- leather bag
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- 238000001816 cooling Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 75
- 239000000498 cooling water Substances 0.000 claims abstract description 48
- 239000010985 leather Substances 0.000 claims abstract description 46
- 239000003034 coal gas Substances 0.000 claims abstract description 16
- 230000001681 protective effect Effects 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 230000004308 accommodation Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 5
- 238000010304 firing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
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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 provides a blast furnace cooling wall sleeve coal gas plugging device and a working method thereof, and the device comprises a blast furnace, a cooling water pipe extending into the blast furnace and a corrugated compensator connected with the blast furnace and the cooling water pipe, wherein the cooling water pipe penetrates through the blast furnace wall of the blast furnace, the corrugated compensator is sleeved on the cooling water pipe, one end of the corrugated compensator is fixed on the blast furnace wall and used for sealing the joint of the cooling water pipe and the blast furnace wall, a sealing part is sleeved on the cooling water pipe, one end of the sealing part is fixed on the cooling water pipe through a fixing part, and the other end of the sealing part is fixed on the corrugated compensator through a fixing part and used for forming annular seal between the sealing part and the cooling water pipe; the blast furnace cooling wall sleeve coal gas plugging device designed by the invention realizes the leakage control of the blast furnace body under the condition of no fire, the designed sealing leather bag is made of rubber, the service life is long, the rubber is flexible, and the device is not damaged by the relative displacement between the cooling wall and the furnace body.
Description
Technical Field
The invention relates to the technical field of blast furnace maintenance, in particular to a blast furnace cooling wall sleeve gas plugging device and a working method.
Background
The gas leakage of the cooling wall sleeve of the blast furnace body is a common abnormal phenomenon of blast furnaces of various iron works. In blast furnace production process, reduce blast furnace stove outer covering temperature through the circulation of the inside water of stave, the stave water pipe passes the stove outer covering, it is sealed to adopt the ripple compensator between the two, because the stave part is heated and changes, can lead to there being relative displacement between stave and the furnace body, and the stave ripple compensator of stave receives temperature variation to influence, there is micro deformation displacement also, it is long-lived, fatigue damage, produce the gap, finally cause furnace body gas leakage, on the one hand leak coal gas and have the potential safety hazard, on the other hand coal gas is mixed with the dust and is washed away to the stave, cause equipment damage. And the coal gas concentration of the part is high, so that the firing operation cannot be carried out, the leakage is difficult to treat by the common leakage stopping method, and the leakage can only be treated by the damping down opportunity of the blast furnace.
The existing plugging methods generally comprise two types: 1. welding and repairing the leakage point; 2. welding and sealing the outer cover of the corrugated compensator of the cooling water pipe by adopting an annular steel plate; the existing plugging method can not carry out firing operation in a high-concentration gas environment. And when welding repair is carried out on the leakage point, excessive welding repair cannot be carried out, otherwise, the corrugated compensator cannot be compensated. Because relative displacement exists between the cooling wall and the furnace body, the secondary leakage is realized when the welding repair point is maintained for a short time, and the prior art only can repeatedly weld repair and cannot radically solve the problem of gas leakage.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a blast furnace cooling wall sleeve gas plugging device and a working method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a blast furnace stave sleeve pipe coal gas plugging device, includes the blast furnace, stretches into the inside condenser tube of blast furnace and connects blast furnace and condenser tube's ripple compensator, the cover is equipped with the sealing on the condenser tube, and sealing one end is passed through the fixed part and is fixed on condenser tube, and the sealing other end passes through the fixed part and fixes on the ripple compensator for form annular seal between sealing and the condenser tube.
Specifically, the fixed part is equipped with the ferrule, and the ferrule is open-ended circular, and the opening part both sides are equipped with the fixed block respectively, are equipped with on the fixed block to supply the bolt to pass fixed bolt hole.
Specifically, the sealing portion adopts a rubber sealing leather bag which is of a cylindrical structure with openings at two ends, and the cooling water pipe and the corrugated compensator are sleeved with the sealing leather bag.
Specifically, the corrugated compensator protection cover is arranged outside the corrugated compensator, one end of the sealing leather bag is fixed to the outside of the cooling water pipe through a pipe hoop and a bolt, and the other end of the sealing leather bag is fixed to the outside of the corrugated compensator protection cover through the pipe hoop and the bolt to form a closed space.
Specifically, the diameter of the opening at one end of the sealing leather bag is consistent with the diameter of the pipe hoop and the outer diameter of the cooling water pipe, and the diameter of the opening at the other end of the sealing leather bag is consistent with the diameter of the pipe hoop and the outer diameter of the corrugated compensator protective cover.
Specifically, the cooling water pipe penetrates through the blast furnace wall of the blast furnace, the corrugated compensator is sleeved on the cooling water pipe, and one end of the corrugated compensator is fixed on the blast furnace wall and used for sealing the joint of the cooling water pipe and the blast furnace wall.
A working method of a blast furnace cooling wall casing pipe gas plugging device comprises the following steps:
1) according to the operation requirement of the blast furnace, a cooling water pipe and a corrugated compensator with proper sizes are selected for installation, and a sealing leather bag and a pipe hoop with matched sizes are selected;
2) when the blast furnace is shut down, the cooling water pipe is detached and sleeved with the sealing leather bag, and when gas is detected to leak between the cooling water pipe and the corrugated compensator in the production operation process, a maintainer is provided with a respirator to install the sealing leather bag, so that one end of the sealing leather bag is positioned outside the protective cover of the corrugated compensator, and the other end of the sealing leather bag is positioned outside the cooling water pipe;
3) then, a pipe hoop is buckled to two ends of the sealing leather bag from the opening of the pipe hoop by using the pipe hoop, and a bolt penetrates through a bolt hole in a fixing block of the pipe hoop to be fastened, so that a closed space is formed among the sealing leather bag, the cooling water pipe and the corrugated compensator;
4) because the sealing leather bag has elasticity, the sealing leather bag has certain accommodation capacity to the coal gas and forms pressure storage, and the leakage of the coal gas is decelerated or the coal gas returns to the blast furnace.
The invention has the following beneficial effects:
the blast furnace cooling wall sleeve gas plugging device designed by the invention has the advantages that the part can not be fired due to the leakage of the blast furnace cooling wall sleeve gas, the concentration of the field gas is relatively high, and the safety management regulation is not met, the device realizes the leakage management of the blast furnace body under the condition of no firing, the designed sealing leather bag is made of rubber, the service life is long, the defect that the prior art can only maintain for several days is effectively overcome, the rubber has flexibility, the device is not damaged by the relative displacement between the cooling wall and the furnace body, meanwhile, the sealing leather bag has a certain accommodation capacity for the gas, the pressure storage is formed, and the leakage of the gas is decelerated or the gas returns to the blast furnace; the device is sleeved on the cooling water pipe by utilizing the damping down opportunity of the blast furnace, and when gas leakage occurs in the production process at ordinary times, personnel can install the device with a respirator.
Drawings
FIG. 1 is a schematic view of the installation structure of a gas plugging device of a blast furnace cooling wall sleeve.
Fig. 2 is a left side view of fig. 1.
In the figure: 1-a sealing part; 2-a fixed part; 3-a cooling water pipe; 4-a ripple compensator; 5-a bellow compensator guard; 6-blast furnace; 7-blast furnace wall; 2.1-pipe hoop; 2.1-bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be described in further detail in the following clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figures 1-2, the blast furnace cooling wall sleeve gas plugging device comprises a blast furnace 6, a cooling water pipe 3 extending into the blast furnace 6 and a corrugated compensator 4 connected with the blast furnace 6 and the cooling water pipe 3, wherein the cooling water pipe 3 penetrates through a blast furnace wall 7 of the blast furnace 6, the corrugated compensator 4 is sleeved on the cooling water pipe 3, and one end of the corrugated compensator 4 is fixed on the blast furnace wall 7 and used for sealing the connection part of the cooling water pipe 3 and the blast furnace wall 7. The cover is equipped with sealing 1 on condenser tube 3, and 1 one end of sealing is passed through fixed part 2 and is fixed on condenser tube 3, and 1 other end of sealing is passed through fixed part 2 and is fixed on corrugated compensator 4 for form the annular seal between sealing 1 and condenser tube 3.
The fixing portion 2 is provided with a pipe hoop 2.1, the pipe hoop 2.1 is in an open circular shape, fixing blocks are arranged on two sides of the opening respectively, and bolt holes for bolts 2.2 to penetrate through for fixing are formed in the fixing blocks.
The sealing part 1 is a rubber sealing leather bag which is of a cylindrical structure with two open ends and is sleeved on the cooling water pipe 3 and the corrugated compensator 4; a corrugated compensator protective cover 5 is arranged outside the corrugated compensator 4, one end of the sealing leather bag is fixed outside the cooling water pipe 3 through a pipe hoop 2.1 and a bolt 2.2, and the other end of the sealing leather bag is fixed outside the corrugated compensator protective cover 5 through the pipe hoop 2.1 and the bolt 2.2 to form a closed space; the diameter of the opening at one end of the sealing leather bag is consistent with the diameter of the pipe hoop 2.1 and the outer diameter of the cooling water pipe 3, and the diameter of the opening at the other end of the sealing leather bag is consistent with the diameter of the pipe hoop 2.1 and the outer diameter of the corrugated compensator protective cover 5.
The invention is used for the treatment of the gas leakage of the blast furnace body, and the specific sizes of the cooling water pipe 3 of the cooling wall and the corrugated compensator protective cover 5 are measured on site by utilizing the overhauling opportunity of the blast furnace 6 so as to determine the manufacturing sizes of the special plugging device (namely the sizes of the sealing leather bag and the pipe hoop 2.1); the rubber is used for manufacturing a cylindrical sealing leather bag with two open ends, and after the device is manufactured, the two ends of the sealing leather bag are respectively fixed outside the cooling water pipe 3 of the cooling wall of the blast furnace and the protective cover 5 of the corrugated compensator by using pipe hoops.
A working method of a blast furnace cooling wall casing pipe gas plugging device comprises the following steps:
1) according to the operation requirement of a blast furnace 6, a cooling water pipe 3 and a corrugated compensator 4 with proper sizes are selected for installation, and a sealing leather bag and a pipe hoop 2.1 with matched sizes are selected;
2) when the blast furnace 6 is shut down, the cooling water pipe 3 is detached and sleeved with the sealing leather bag, and when gas is detected to leak between the cooling water pipe 3 and the corrugated compensator 4 in the production operation process, a maintainer is provided with a respirator to install the sealing leather bag, so that one end of the sealing leather bag is positioned outside the corrugated compensator protective cover 5, and the other end of the sealing leather bag is positioned outside the cooling water pipe 3;
3) then, the pipe hoop 2.1 is buckled to two ends of the sealing leather bag from the opening of the pipe hoop 2.1, and a bolt 2.2 penetrates through a bolt hole in a fixing block of the pipe hoop 2.1 to be fastened, so that a closed space is formed among the sealing leather bag, the cooling water pipe 3 and the corrugated compensator 4;
4) because the sealing leather bag has elasticity, the sealing leather bag has certain accommodation capacity to the coal gas and forms pressure storage, and the leakage of the coal gas is decelerated or the coal gas returns to the blast furnace 6.
The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.
The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (7)
1. The utility model provides a blast furnace stave sleeve pipe coal gas plugging device, its characterized in that, includes the blast furnace, stretches into the inside condenser tube of blast furnace and the ripple compensator of connecting blast furnace and condenser tube, the cover is equipped with sealing on the condenser tube, and sealing one end is passed through the fixed part and is fixed on condenser tube, and the sealing other end passes through the fixed part and fixes on the ripple compensator for form annular seal between sealing and the condenser tube.
2. The gas plugging device for the cooling wall sleeve of the blast furnace as claimed in claim 1, wherein the fixing portion is provided with a pipe hoop, the pipe hoop is in an open circular shape, fixing blocks are respectively provided at both sides of the opening, and bolt holes for bolts to pass through for fixing are provided on the fixing blocks.
3. The gas plugging device for the cooling wall sleeve of the blast furnace as claimed in claim 2, wherein the sealing portion is made of rubber, the sealing leather bag is of a cylindrical structure with two open ends, and the cooling water pipe and the corrugated compensator are sleeved with the sealing leather bag.
4. The gas plugging device for the cooling wall sleeve of the blast furnace as claimed in claim 3, wherein a corrugated compensator protecting cover is provided on the outside of the corrugated compensator, one end of the sealing bladder is fixed on the outside of the cooling water pipe through a pipe hoop and a bolt, and the other end of the sealing bladder is fixed on the outside of the corrugated compensator protecting cover through a pipe hoop and a bolt, so as to form a closed space.
5. The blast furnace stave casing gas shutoff device of claim 4 wherein the diameter of the opening at one end of the sealing bladder is substantially equal to the diameter of the pipe clamp and the outer diameter of the cooling water pipe, and the diameter of the opening at the other end of the sealing bladder is substantially equal to the diameter of the pipe clamp and the outer diameter of the corrugated compensator boot.
6. The gas plugging device for the cooling wall sleeve of the blast furnace as claimed in claim 1, wherein the cooling water pipe penetrates through the blast furnace wall of the blast furnace, the corrugated compensator is sleeved on the cooling water pipe, and one end of the corrugated compensator is fixed on the blast furnace wall and used for sealing the joint of the cooling water pipe and the blast furnace wall.
7. The working method of the blast furnace stave casing gas plugging device according to any one of claims 1 to 6 is characterized by comprising the steps of:
1) according to the operation requirement of the blast furnace, a cooling water pipe and a corrugated compensator with proper sizes are selected for installation, and a sealing leather bag and a pipe hoop with matched sizes are selected;
2) when the blast furnace is shut down, the cooling water pipe is detached and sleeved with the sealing leather bag, and when gas is detected to leak between the cooling water pipe and the corrugated compensator in the production operation process, a maintainer is provided with a respirator to install the sealing leather bag, so that one end of the sealing leather bag is positioned outside the protective cover of the corrugated compensator, and the other end of the sealing leather bag is positioned outside the cooling water pipe;
3) then, a pipe hoop is buckled to two ends of the sealing leather bag from the opening of the pipe hoop by using the pipe hoop, and a bolt penetrates through a bolt hole in a fixing block of the pipe hoop to be fastened, so that a closed space is formed among the sealing leather bag, the cooling water pipe and the corrugated compensator;
4) because the sealing leather bag has elasticity, the sealing leather bag has certain accommodation capacity to the coal gas and forms pressure storage, and the leakage of the coal gas is decelerated or the coal gas returns to the blast furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911222207.2A CN110760635A (en) | 2019-12-03 | 2019-12-03 | Blast furnace cooling wall casing pipe gas plugging device and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911222207.2A CN110760635A (en) | 2019-12-03 | 2019-12-03 | Blast furnace cooling wall casing pipe gas plugging device and working method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110760635A true CN110760635A (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911222207.2A Pending CN110760635A (en) | 2019-12-03 | 2019-12-03 | Blast furnace cooling wall casing pipe gas plugging device and working method |
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| CN (1) | CN110760635A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH108114A (en) * | 1996-06-25 | 1998-01-13 | Nippon Steel Corp | Device for cooling furnace bottom of blast furnace |
| EP1403603A1 (en) * | 2002-09-25 | 2004-03-31 | SMS Demag Aktiengesellschaft | Connecting element for cooling element of a shaft furnace |
| CN101333569A (en) * | 2007-06-28 | 2008-12-31 | 上海梅山钢铁股份有限公司 | Repairing method for cooling staveleakage |
| CN203890374U (en) * | 2014-06-19 | 2014-10-22 | 中冶赛迪上海工程技术有限公司 | Cooling wall mounting structure with flexible casing |
| CN204434644U (en) * | 2014-12-15 | 2015-07-01 | 武汉钢铁(集团)公司 | A kind of tightness system of water inlet pipe and water outlet pipe of blast furnace cooling wall |
| CN208949325U (en) * | 2018-10-15 | 2019-06-07 | 安徽马钢设备检修有限公司 | A kind of fast pressure testing device for blast furnace cooling stave |
| JP2019178791A (en) * | 2018-03-30 | 2019-10-17 | Ｊｆｅスチール株式会社 | Mounting structure of furnace body protecting stave |
| CN210826225U (en) * | 2019-12-03 | 2020-06-23 | 山东钢铁集团日照有限公司 | Blast furnace stave sleeve pipe coal gas plugging device |
-
2019
- 2019-12-03 CN CN201911222207.2A patent/CN110760635A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH108114A (en) * | 1996-06-25 | 1998-01-13 | Nippon Steel Corp | Device for cooling furnace bottom of blast furnace |
| EP1403603A1 (en) * | 2002-09-25 | 2004-03-31 | SMS Demag Aktiengesellschaft | Connecting element for cooling element of a shaft furnace |
| CN101333569A (en) * | 2007-06-28 | 2008-12-31 | 上海梅山钢铁股份有限公司 | Repairing method for cooling staveleakage |
| CN203890374U (en) * | 2014-06-19 | 2014-10-22 | 中冶赛迪上海工程技术有限公司 | Cooling wall mounting structure with flexible casing |
| CN204434644U (en) * | 2014-12-15 | 2015-07-01 | 武汉钢铁(集团)公司 | A kind of tightness system of water inlet pipe and water outlet pipe of blast furnace cooling wall |
| JP2019178791A (en) * | 2018-03-30 | 2019-10-17 | Ｊｆｅスチール株式会社 | Mounting structure of furnace body protecting stave |
| CN208949325U (en) * | 2018-10-15 | 2019-06-07 | 安徽马钢设备检修有限公司 | A kind of fast pressure testing device for blast furnace cooling stave |
| CN210826225U (en) * | 2019-12-03 | 2020-06-23 | 山东钢铁集团日照有限公司 | Blast furnace stave sleeve pipe coal gas plugging device |
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