CN114350878A - Tuyere belly pipe equipment with air seal and iron-making furnace system - Google Patents
Tuyere belly pipe equipment with air seal and iron-making furnace system Download PDFInfo
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- CN114350878A CN114350878A CN202210143442.6A CN202210143442A CN114350878A CN 114350878 A CN114350878 A CN 114350878A CN 202210143442 A CN202210143442 A CN 202210143442A CN 114350878 A CN114350878 A CN 114350878A
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- 210000001015 abdomen Anatomy 0.000 title claims abstract description 97
- 238000007789 sealing Methods 0.000 claims abstract description 80
- 239000003034 coal gas Substances 0.000 claims abstract description 17
- 238000012806 monitoring device Methods 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 54
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010017740 Gas poisoning Diseases 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 208000005374 Poisoning Diseases 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
- C21B9/10—Other details, e.g. blast mains
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/16—Tuyéres
- C21B7/163—Blowpipe assembly
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Gasket Seals (AREA)
Abstract
The scheme provides a tuyere belly pipe device with an air seal, which comprises a belly pipe body and a tuyere small sleeve, wherein inner cavities of the belly pipe body and the tuyere small sleeve are communicated, and the tuyere belly pipe device is used for conveying high-temperature gas or coal gas. The tuyere small sleeve is sleeved at one end of an exhaust port of the belly pipe body and is in contact sealing. The belly pipe body is provided with a ring groove, the ring groove is provided with an air inlet and an air outlet, the air inlet is used for introducing sealing air, and the air outlet is arranged on a sealing surface of the belly pipe body and the tuyere small sleeve. The annular groove is designed on the sealing surface of the end of the belly pipe body, which is in contact with the tuyere small sleeve, a gas sealing annular channel is formed by introducing gas with pressure higher than the pressure in the blast furnace, once the contact sealing of the end of the belly pipe body and the contact surface of the tuyere small sleeve fails, sealing gas enters the blast furnace along the gap of the sealing surface, and the gas is prevented from leaking to the outside of the blast furnace through the gap to cause potential safety hazards, so that the safety problem caused by the gas leakage of the sealing surface of the belly pipe body and the tuyere small sleeve of the blast furnace is solved. The scheme also provides an iron-making furnace system.
Description
Technical Field
The invention belongs to the technical field of air supply devices, and particularly relates to a tuyere belly pipe device with an air seal.
Background
Blast furnaces and other iron making furnaces convey high-temperature air or coal gas into the blast furnace through an air supply device, wherein the air supply device is equipment connected with a blast furnace body through a pipeline and generally consists of a compensator, an elbow, a belly pipe and a matched pull rod system. And blast furnace hot-blast pipeline leans on the blast furnace frame to support, and the tuyere small sleeve then is located the blast furnace body, and blast furnace after putting into production the furnace body thermal expansion, leads to hot-blast bustle pipe and furnace body to take place the displacement, and huge vibration during blast furnace production needs to pass through air supply arrangement as the connecting piece. Meanwhile, the tuyere small sleeve belongs to a wearing part and needs to be frequently taken out for replacement. Because of the factors of heating, stress, convenient replacement and the like, the air supply device and the blast furnace body are tightly connected with the contact spherical surface of the tuyere small sleeve through the belly pipe. The connection is convenient to disassemble, and the problem of tight jacking and sealing caused by stress changes in radial and circumferential directions can be well solved.
But with the increase of the service time of the blast furnace, the deformation of a furnace body system is larger, and the spherical surface jacking mode cannot realize 100% reliable sealing, so that the problem of coal gas leakage in the environment from the contact surface of a belly pipe and a tuyere small sleeve occurs in many blast furnaces, and potential safety hazards are caused.
At present, a belly pipe and a tuyere small sleeve are tightly propped and sealed, and whether gas leaks or not is judged by measuring the gas concentration of the environment near the tuyere small sleeve or observing whether gas burns at the sealing position of the tuyere small sleeve. If air leaks, the problem of poor sealing is solved by adjusting the stress of the tensioning device. Especially, in the situation that the hydrogen-rich carbon circulating blast furnace needs to spray high-temperature, high-pressure and high-toxicity coal gas into the blast furnace through an air supply device, if reliable sealing cannot be achieved, the safety risk is more prominent. The sealing problem between the belly pipe and the tuyere small sleeve is an important ring for the safe production of the blast furnace.
Therefore, how to improve the sealing reliability of the tuyere belly pipe equipment is a problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide tuyere belly pipe equipment with an air seal, which can effectively improve the sealing reliability.
In order to solve the technical problem, the invention provides tuyere belly pipe equipment with an air seal, which comprises a belly pipe body and a tuyere small sleeve, wherein the inner cavities of the belly pipe body and the tuyere small sleeve are communicated so as to convey high-temperature gas or coal gas;
the small tuyere sleeve is sleeved at one end of an exhaust port of the belly pipe body and is in contact sealing;
the belly pipe body is provided with a ring groove, the ring groove is provided with an air inlet and an air outlet, the air inlet is used for introducing sealing air with pressure higher than the pressure in the furnace, and the air outlet is formed in the sealing surface of the belly pipe body and the tuyere small sleeve, so that the sealing air enters the furnace along the gap of the sealing surface after contact sealing fails.
Optionally, in the tuyere belly pipe device with the air seal, the annular groove is far away from the exhaust port of the belly pipe body.
Optionally, in the tuyere belly pipe device with the air seal, the seal air is compressed air.
Optionally, in the tuyere belly pipe device with the air seal, the air inlet is communicated with the air transmission device through an air pipe.
Optionally, in the tuyere belly pipe device with the air seal, the air pipe is an air pipe externally arranged on the belly pipe body.
Optionally, in the tuyere belly pipe device with the air seal, the air pipe is a built-in channel on the belly pipe body.
Optionally, the tuyere belly pipe device with the air seal further comprises a monitoring device for monitoring whether the sealing surface leaks.
Optionally, in the tuyere belly pipe device with the gas seal, the monitoring device is used for monitoring the gas pressure of the seal gas, and when the pressure in the ring groove is suddenly reduced, the risk of gas leakage can be pre-warned.
Optionally, in the tuyere belly pipe device with the air seal, an electromagnetic valve is connected in series to the air pipe, and when the monitoring device monitors leakage, the air transmission device and the electromagnetic valve are controlled to be opened.
The present invention provides an iron making furnace system comprising a tuyere belly pipe device with a gas seal as described above.
The tuyere belly pipe equipment with the air seal provided by the invention has the following beneficial effects:
the annular groove is designed on the sealing surface of the end of the belly pipe body, which is in contact with the tuyere small sleeve, a gas sealing annular channel is formed by introducing gas (such as compressed air) with pressure higher than the pressure in the blast furnace, once the contact sealing of the end of the belly pipe body and the contact surface of the tuyere small sleeve fails, sealing gas enters the blast furnace along the gap of the sealing surface, and the gas is prevented from leaking to the outside of the blast furnace through the gap to cause potential safety hazards, so that the safety problem caused by the leakage of the gas from the sealing surface of the blast furnace belly pipe body and the tuyere small sleeve is solved, and the sealing reliability can be effectively improved.
The invention also provides an iron-making furnace system with the tuyere belly pipe equipment with the air seal, which also has the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a blast furnace blower provided in the prior art;
FIG. 2 is a schematic structural diagram of a belly pipe with a gas seal and a tuyere small sleeve provided in the prior art;
FIG. 3 is a schematic structural view of a blast furnace blower according to the present invention;
FIG. 4 is a schematic structural diagram of a tuyere belly pipe device with an air seal provided by the invention;
fig. 5 is a schematic view of the gas flow between the tuyere belly pipe device with the gas seal and the tuyere small sleeve provided by the invention.
Reference numerals:
in the prior art:
01-belly pipe; 02-tuyere small sleeve;
in the present case:
100-belly pipe body; 110-ring groove; 120-trachea;
200-tuyere small sleeve.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
It should be noted that, for the convenience of description, only the portions related to the related applications are shown in the drawings. The embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be understood that "system", "apparatus", "unit" and/or "module" as used herein is a method for distinguishing different components, elements, parts or assemblies at different levels. However, other words may be substituted by other expressions if they accomplish the same purpose.
As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements. An element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
In the description of the embodiments herein, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
The core of the invention is to provide the tuyere belly pipe equipment with the air seal, which can effectively improve the sealing reliability.
In order to make those skilled in the art better understand the technical solutions provided by the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 3-5, fig. 3 is a schematic structural view of a blast furnace blower according to the present invention; FIG. 4 is a schematic structural diagram of a tuyere belly pipe device with an air seal provided by the invention; fig. 5 is a schematic view of the gas flow between the tuyere belly pipe device with the gas seal and the tuyere small sleeve provided by the invention.
The invention provides tuyere belly pipe equipment with an air seal, which comprises a belly pipe body 100 and a tuyere small sleeve 200, wherein the inner cavities of the belly pipe body 100 and the tuyere small sleeve 200 are communicated and used for conveying high-temperature gas or coal gas. The tuyere small sleeve 200 is sleeved at one end of an exhaust port of the belly pipe body 100 and is in contact sealing, so that sealing gas enters the furnace along the gap of the sealing surface after the contact sealing fails.
The belly pipe body 100 is provided with a ring groove 110, the ring groove 110 is provided with an air inlet and an air outlet, the air inlet is used for introducing sealing air with pressure higher than the pressure in the furnace, and the air outlet is arranged on a sealing surface of the belly pipe body 100 and the tuyere small sleeve 200.
It should be noted that, the gas in the inner cavity of the belly pipe body 100 is ejected and enters the inner cavity of the tuyere small sleeve 200, the sealing edge (sealing surface) of the gas between the belly pipe body 100 and the tuyere small sleeve 200 contacts and erodes the inner cavity of the tuyere small sleeve 200, and the tuyere small sleeve 200 is easily damaged.
When the sealing surface of the tuyere small sleeve 200 is abraded, a gap is formed between the sealing surfaces of the belly pipe body 100 and the tuyere small sleeve 200, at the moment, sealing gas is introduced into the air inlet of the annular groove 110 on the belly pipe body 100 and is discharged through the air outlet of the annular groove 110, so that the leaked high-temperature gas or coal gas is resisted, the high-temperature gas or coal gas is prevented from being leaked from the gap of the failed sealing surface, and the sealing reliability can be effectively improved.
According to the tuyere belly pipe equipment with the air seal, an annular groove 110 is innovatively designed on a sealing surface, in which the end of a belly pipe body 100 is in contact with a tuyere small sleeve 200, and a gas (such as compressed air) higher than the pressure in a furnace is introduced to form a gas seal annular channel, so that once the contact seal of the end of the belly pipe body 100 and the contact surface of the tuyere small sleeve 200 fails, sealing gas enters a blast furnace along a gap of the sealing surface and prevents coal gas from leaking to the outside of the blast furnace through the gap to cause potential safety hazards, and therefore the safety problem caused by the coal gas leakage of the sealing surface of the tuyere belly pipe body 100 and the tuyere small sleeve 200 is solved.
In particular embodiments, the circumferential groove 110 is spaced away from the exhaust opening of the belly pipe body 100 to facilitate a reliable gas seal after the sealing surface has been deformed to some extent. Of course, the ring groove 110 may be a plurality arranged in the axial direction of the belly pipe body 100. The air sealing effect is improved through multiple sealing.
In a preferred embodiment, the seal gas is compressed air. The sealing gas adopts compressed air with pressure higher than the pressure in the furnace, even if the gas tightness can not completely prevent the gas in the furnace from leaking, the combustion of the compressed air can be realized at the leaking gap to form open fire, so that the leaked high-temperature gas can be combusted, and the gas poisoning risk is reduced.
In a particular embodiment, the air inlet is in communication with the air delivery device via an air tube 120. In one aspect, the gas tube 120 is external to the belly tube body 100, and thus may be easily machined into the existing belly tube body 100. In another case, the air tube 120 is a built-in channel on the belly tube body 100, which can effectively save the occupied space.
On the basis of the above specific embodiment, the present disclosure further includes a monitoring device for monitoring whether the sealing surface leaks. The monitoring device may be particularly positioned near the junction of the belly tube body 100 and the tuyere stock 200. In particular, whether the seal is intact can be monitored by monitoring the gas seal pressure. When the sealing problem is found, the problem of poor sealing can be solved by adjusting the stress of the tensioning device.
In particular, the monitoring device is used to monitor the pressure of the sealing gas. And monitoring whether the sealing surface leaks air or not by monitoring the pressure change of the sealing gas. When the contact seal is good, the gas in the furnace and the seal gas are not leaked, the pressure of the compressed air is kept constant, if the gas is leaked, the pressure of the seal gas is reduced, and early warning can be sent out in advance.
In addition, an electromagnetic valve may be connected in series to the gas pipe 120, and when the monitoring device monitors leakage, the gas transmission device and the electromagnetic valve are controlled to be opened.
In one embodiment, as shown in fig. 5, the belly pipe body 100 is tightly contacted and sealed with the tuyere small sleeve 200 by a spherical sealing surface at the front end thereof, and a ring groove 110 is formed on the sealing surface of the belly pipe body 100 to serve as a sealing air passage. When the belly pipe body 100 is tightly propped against the tuyere small sleeve 200, the annular groove 110 is attached to the end face of the tuyere small sleeve 200 to form an annular sealing air passage, and sealing air (compressed air) is introduced into the air pipe 120 to form an air sealing annular passage at the sealing air passage.
When the belly pipe body 100 and the tuyere small sleeve 200 are tightly contacted and not tightly sealed, the gas pressure in the ring groove 110 is higher than the pressure in the blast furnace, and the sealing gas can push the coal gas back into the blast furnace; at the moment, the pressure of the sealing gas is reduced, the risk of gas leakage can be pre-warned, and the problem that contact sealing is not tight can be solved by adjusting the stress of the external tensioning device by production personnel. If the contact seal leakage is too serious, the seal gas can not completely push the coal gas back into the furnace, part of the coal gas leaks to the environment, and at the moment, the compressed air for sealing can be combusted with the leaked high-temperature coal gas, so that the risk of CO poisoning in the leaked coal gas is reduced.
Aiming at the great improvement of the traditional tuyere belly pipe equipment, the invention improves the sealing reliability by arranging a gas seal, and early warns in advance by monitoring the pressure change of the sealing gas, thereby improving the safety of the device, solving the safety problem that the gas is easy to leak at the joint of the small tuyere sleeve 200 of the blast furnace and the belly pipe body 100, and being important equipment for ensuring the safety of the blast furnace.
Further, the present invention provides an ironmaking furnace system comprising the tuyere belly pipe apparatus with gas seal as described above.
Because the ironmaking furnace system is provided with the tuyere belly pipe equipment with the air seal, the ironmaking furnace system has the beneficial effects brought by the tuyere belly pipe equipment with the air seal, please refer to the above contents, and the details are not repeated herein.
The iron-making furnace can be a blast furnace containing oxygen, an Ou-Meta furnace and the like, and the tuyere belly pipe equipment with the air seal can be used for occasions for conveying air or coal gas into the blast furnace.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The tuyere belly pipe equipment with the air seal is characterized by comprising a belly pipe body and a tuyere small sleeve, wherein the inner cavities of the belly pipe body and the tuyere small sleeve are communicated so as to convey high-temperature gas or coal gas;
the small tuyere sleeve is sleeved at one end of an exhaust port of the belly pipe body and is in contact sealing;
the belly pipe body is provided with a ring groove, the ring groove is provided with an air inlet and an air outlet, the air inlet is used for introducing sealing air with pressure higher than the pressure in the furnace, and the air outlet is formed in the sealing surface of the belly pipe body and the tuyere small sleeve, so that the sealing air enters the furnace along the gap of the sealing surface after contact sealing fails.
2. The tuyere belly lance device with gas seal according to claim 1, characterized in that said annular groove is remote from the exhaust opening of said belly lance body.
3. The tuyere belly pipe apparatus with gas seal according to claim 1, wherein said sealing gas is compressed air.
4. A tuyere belly pipe device with a gas seal according to claim 1, characterized in that said gas inlet is in communication with a gas delivery device through a gas pipe.
5. The tuyere belly pipe apparatus with gas seal according to claim 4, wherein said air pipe is an air pipe externally disposed to said belly pipe body.
6. The tuyere belly pipe apparatus with gas seal according to claim 4, wherein said gas pipe is a built-in channel on said belly pipe body.
7. A tuyere belly pipe device with a gas seal according to any of claims 4-6, characterized by further comprising a monitoring device for monitoring whether said sealing surface is leaking.
8. The tuyere belly pipe device with a gas seal according to claim 7, wherein said monitoring device is used for monitoring the gas pressure of the seal gas, and when the pressure in the ring groove suddenly decreases, the risk of gas leakage can be warned.
9. The tuyere belly pipe device with a gas seal according to claim 7, wherein an electromagnetic valve is connected in series to the gas pipe, and when the monitoring device detects a leakage, the gas transmission device and the electromagnetic valve are controlled to be opened.
10. An iron making furnace system comprising a tuyere belly pipe apparatus with a gas seal according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210143442.6A CN114350878B (en) | 2022-02-16 | Tuyere belly pipe equipment with air seal and iron making furnace system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210143442.6A CN114350878B (en) | 2022-02-16 | Tuyere belly pipe equipment with air seal and iron making furnace system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114350878A true CN114350878A (en) | 2022-04-15 |
| CN114350878B CN114350878B (en) | 2024-07-02 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000119717A (en) * | 1998-10-14 | 2000-04-25 | Nkk Corp | Method for preventing natural opening of tuyere utilizing hot blasting control valve |
| CN208649358U (en) * | 2018-04-18 | 2019-03-26 | 秦皇岛裕通科技有限公司 | A kind of air-supply apparatus of blast furnace belly pipe end seals structure |
| CN111734823A (en) * | 2020-07-14 | 2020-10-02 | 中冶京诚工程技术有限公司 | Sealing structure for preventing air leakage of air port sleeve joint surface and air port sleeve structure |
| CN211921615U (en) * | 2019-11-22 | 2020-11-13 | 中天钢铁集团有限公司 | Blast furnace tuyere belly pipe airtightness detection device |
| CN114350874A (en) * | 2022-01-12 | 2022-04-15 | 新疆八一钢铁股份有限公司 | Anti-leakage blast furnace air supply device and installation method thereof |
| CN216864214U (en) * | 2022-02-16 | 2022-07-01 | 中钢设备有限公司 | Tuyere belly pipe equipment with air seal and iron-making furnace system |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000119717A (en) * | 1998-10-14 | 2000-04-25 | Nkk Corp | Method for preventing natural opening of tuyere utilizing hot blasting control valve |
| CN208649358U (en) * | 2018-04-18 | 2019-03-26 | 秦皇岛裕通科技有限公司 | A kind of air-supply apparatus of blast furnace belly pipe end seals structure |
| CN211921615U (en) * | 2019-11-22 | 2020-11-13 | 中天钢铁集团有限公司 | Blast furnace tuyere belly pipe airtightness detection device |
| CN111734823A (en) * | 2020-07-14 | 2020-10-02 | 中冶京诚工程技术有限公司 | Sealing structure for preventing air leakage of air port sleeve joint surface and air port sleeve structure |
| CN114350874A (en) * | 2022-01-12 | 2022-04-15 | 新疆八一钢铁股份有限公司 | Anti-leakage blast furnace air supply device and installation method thereof |
| CN216864214U (en) * | 2022-02-16 | 2022-07-01 | 中钢设备有限公司 | Tuyere belly pipe equipment with air seal and iron-making furnace system |
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