CN111719030A - Structure for preventing gas leakage of tuyere and tuyere sleeve structure - Google Patents
Structure for preventing gas leakage of tuyere and tuyere sleeve structure Download PDFInfo
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- CN111719030A CN111719030A CN202010673822.1A CN202010673822A CN111719030A CN 111719030 A CN111719030 A CN 111719030A CN 202010673822 A CN202010673822 A CN 202010673822A CN 111719030 A CN111719030 A CN 111719030A
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- tuyere
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- 238000003825 pressing Methods 0.000 claims abstract description 82
- 238000007789 sealing Methods 0.000 claims abstract description 72
- 238000009434 installation Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000003034 coal gas Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/16—Tuyéres
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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 relates to a structure for preventing tuyere gas leakage and a tuyere sleeve structure, wherein the structure for preventing tuyere gas leakage comprises a plurality of pressing plates, each pressing plate comprises a bent plate part spanning between a tuyere large sleeve and a flange, one end of each bent plate part is provided with a first top plate part capable of being abutted against the end surface of the flange, and the other end of each bent plate part is provided with a second top plate part capable of being axially abutted against the end surface of the tuyere large sleeve; the structure for preventing the gas leakage of the tuyere further comprises an outer conical surface arranged on the outer wall of the tuyere large sleeve and an inner conical surface arranged on the inner wall of the flange, the outer conical surface can be tightly abutted against the inner conical surface, and a sealing ring is arranged between the outer conical surface and the inner conical surface. The invention overcomes the problems of complex manufacture and installation, easy deformation, easy generation of tuyere gas leakage and the like in the prior art, adopts the pressing plate to connect the tuyere large sleeve and the flange, adopts the conical surface and the sealing ring for sealing, can effectively prevent the gas leakage in the tuyere area, ensures the safety of the tuyere area, and is an effective means for realizing the low-consumption and safe production of the blast furnace.
Description
Technical Field
The invention relates to the technical field of ferrous metallurgy, in particular to a structure for preventing gas leakage of a tuyere and a tuyere sleeve structure.
Background
In the smelting process of the blast furnace, hot air enters the furnace through the air supply device and is combusted at the front end of the tuyere, a large amount of high-temperature coal gas is generated during combustion, a convolution area is formed, and the high-temperature coal gas easily penetrates through a refractory material gap to reach the tuyere equipment. The traditional tuyere large sleeve is connected with the flange through bolts, the large sleeve and the flange need to be matched with bolt holes, more bolts need to be arranged in order to ensure the connection reliability of the tuyere large sleeve and the flange, the manufacturing and installation are complex, the rigidity of the large sleeve flange is high, and the tuyere large sleeve and the flange are easy to deform during the manufacturing and installation. In addition, the two are sealed by the metal gasket, and gas leakage is easy to occur once the gasket has the problems of aging and the like. During actual production, a plurality of blast furnaces are subjected to the condition, leaked gas is generally ignited on site for safety, but long-term high temperature can affect the strength of a furnace shell and tuyere equipment, so that the key point is how to manage from the source and avoid the leakage of the gas from a tuyere large sleeve and a flange joint surface, and the safety production of the blast furnaces is ensured.
Therefore, the inventor provides a structure for preventing the gas leakage of the tuyere and a tuyere sleeve structure by virtue of experience and practice of related industries for many years so as to overcome the defects of the prior art.
Disclosure of Invention
The invention aims to provide a structure for preventing tuyere gas leakage and a tuyere sleeve structure, which overcome the problems of complex manufacture and installation, easy deformation, easy occurrence of tuyere gas leakage and the like in the prior art, and the invention adopts a pressing plate to connect a tuyere large sleeve and a flange and adopts a conical surface and a sealing ring for sealing, thereby effectively preventing the gas leakage in the tuyere area, ensuring the safety of the tuyere area and being an effective means for realizing the low-consumption and safe production of a blast furnace.
The invention aims to realize the structure for preventing the gas leakage of the tuyere, which is used between a tuyere large sleeve and a flange which are internally and externally sleeved in a stacking way, and comprises a plurality of pressing plates which can axially abut against and fix the tuyere large sleeve and the flange, wherein each pressing plate comprises a bent plate part which is arranged between the tuyere large sleeve and the flange in a spanning way, one end of each bent plate part is provided with a first top plate part which can abut against the end surface of the flange, and the other end of each bent plate part is provided with a second top plate part which can axially abut against the end surface of the tuyere large sleeve; the structure for preventing the gas leakage of the tuyere further comprises an outer conical surface arranged on the outer wall of the tuyere large sleeve and an inner conical surface arranged on the inner wall of the flange, the outer conical surface can be in sealing abutting connection with the inner conical surface, and a sealing ring is arranged between the outer conical surface and the inner conical surface.
In a preferred embodiment of the invention, the flange further comprises at least 3 pin wedge plates circumferentially arranged on the end surface of the flange at intervals, and the number of the pin wedge plates is the same as that of the pressure plates; and each pin wedge plate is provided with a pressing wedge through groove which is radially communicated along the flange, each pressing plate respectively penetrates through each pressing wedge through groove, a bent plate part of each pressing wedge through groove is arranged in the pressing wedge through groove in a spanning mode, one end, which is located at the bent plate part and is far away from the flange, of each pressing wedge through groove is provided with a wedge plate in a wedging mode, and the wedge plates are used for fixedly pressing the pressing plates.
In a preferred embodiment of the present invention, a length dimension of the first top plate portion of the pressure plate in the axial direction of the flange is smaller than a length dimension of the second top plate portion of the pressure plate in the axial direction of the flange.
In a preferred embodiment of the present invention, each of the pin wedge plates is a rectangular plate, one end of each of the pin wedge plates is recessed inward to form the wedge pressing through groove, and the wedge pressing through groove is formed in a rectangular opening.
In a preferred embodiment of the present invention, the number of the pin wedge plates, the pressure plate and the wedge plate is 4, and each of the pin wedge plates is circumferentially and uniformly arranged on the end surface of the flange at intervals.
The invention can also realize the aim that the tuyere sleeve structure comprises a small tuyere sleeve, a middle tuyere sleeve and a large tuyere sleeve which are internally and externally overlapped and are arranged in a taper sleeve structure, wherein one end with the large diameter of the small tuyere sleeve is hermetically sleeved at the inner side of one end with the small diameter of the middle tuyere sleeve; the large-diameter end of the tuyere medium sleeve is hermetically arranged at the inner side of the small-diameter end of the tuyere large sleeve; the flange is sleeved on the outer wall of the large-diameter end of the tuyere large sleeve, and a structure for preventing gas leakage of the tuyere is arranged between the tuyere large sleeve and the flange.
In a preferred embodiment of the present invention, the structure for preventing gas leakage from the tuyere comprises a plurality of pressing plates capable of axially abutting against and fixing the tuyere large sleeve and the flange, wherein the pressing plates comprise bent plate portions spanning between the tuyere large sleeve and the flange, one end of each bent plate portion is provided with a first top plate portion capable of abutting against the end surface of the flange, and the other end of each bent plate portion is provided with a second top plate portion capable of axially abutting against the end surface of the tuyere large sleeve; the structure for preventing the gas leakage of the tuyere further comprises an outer conical surface arranged on the outer wall of the large-diameter end of the tuyere large sleeve and an inner conical surface arranged on the inner wall of the flange, the outer conical surface can be in sealing abutting connection with the inner conical surface, and a sealing ring is arranged between the outer conical surface and the inner conical surface.
In a preferred embodiment of the present invention, the structure for preventing the leakage of the tuyere gas further comprises at least 3 pin wedge plates circumferentially arranged on the end surface of the flange at intervals, and the number of the pin wedge plates is the same as the number of the pressure plates; and each pin wedge plate is provided with a pressing wedge through groove which is radially communicated along the flange, each pressing plate respectively penetrates through each pressing wedge through groove, a bent plate part of each pressing wedge through groove is arranged in the pressing wedge through groove in a spanning mode, one end, which is located at the bent plate part and is far away from the flange, of each pressing wedge through groove is provided with a wedge plate in a wedging mode, and the wedge plates are used for fixedly pressing the pressing plates.
In a preferred embodiment of the present invention, each of the pin wedge plates is a rectangular plate, one end of each of the pin wedge plates is recessed inward to form the wedge pressing through groove, and the wedge pressing through groove is formed in a rectangular opening.
In a preferred embodiment of the present invention, a sealing ring groove is annularly arranged on the outer conical surface of the tuyere large sleeve, the sealing ring is clamped in the sealing ring groove, and the radial outer side of the sealing ring is supported against the inner conical surface of the flange in a sealing manner.
From the above, the structure for preventing the gas leakage of the tuyere and the tuyere sleeve structure provided by the invention have the following beneficial effects:
according to the structure for preventing the gas leakage of the tuyere, the pressing plate is connected with the tuyere large sleeve and the flange to replace the bolt connection in the prior art, and the pressing plate is fixedly propped against the end surfaces of the tuyere large sleeve and the flange to play a role in fixing the tuyere large sleeve, so that the structure is simple and the installation is convenient; the side wall joint surface of the tuyere large sleeve and the flange is abutted by adopting conical surface sealing and is tightly matched, so that the function of sealing the joint surface of the tuyere large sleeve and the flange is achieved, and main sealing is formed; a sealing ring is arranged between the outer conical surface and the inner conical surface, and a main seal in hard contact is supplemented by a sealing flange of the sealing ring and a large sleeve combining surface of the tuyere, so that coal gas is sealed, and a first layer of auxiliary sealing effect is achieved; the invention has simple structure, can effectively prevent the gas leakage in the tuyere area, ensures the safety of the tuyere area, and is an effective means for realizing the low consumption and safe production of the blast furnace;
in the tuyere sleeve structure provided by the invention, a structure for preventing gas leakage of the tuyere is adopted, and the tuyere sleeve and the flange are welded at the joint to play a role of secondary sealing, so that triple sealing between the tuyere sleeve and the flange is realized, the sealing property is increased, the safety of the tuyere area can be effectively ensured, and the tuyere sleeve structure is an effective means for realizing low consumption and safety of a blast furnace.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
FIG. 1: is a schematic structural diagram of the tuyere sleeve.
FIG. 2: is an enlarged view at I in FIG. 1.
FIG. 3: the flange structure of the mounting pin wedge plate is a schematic diagram.
FIG. 4: is a schematic view along the direction A in FIG. 3.
FIG. 5: is a schematic view of the pin wedge plate of the present invention.
FIG. 6: is a schematic view of the platen of the present invention.
In the figure:
100. structure for preventing gas leakage from tuyere;
200. tuyere sleeve structure
1. A tuyere small sleeve;
2. a tuyere medium sleeve;
3. a tuyere large sleeve; 31. sealing the ring groove;
4. a flange;
5. pressing a plate; 50. a bent plate portion; 51. a first top plate portion; 52. a second top plate portion;
6. a pin wedge plate; 61. pressing a wedge through a groove;
7. a wedge plate;
81. an outer conical surface; 82. an inner conical surface; 83. a seal ring;
9. and (5) a furnace shell.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
The specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 6, the present invention provides a structure 100 for preventing tuyere gas leakage, which is used between a tuyere large sleeve 3 and a flange 4 that are internally and externally overlapped, wherein the tuyere large sleeve 3 is arranged in a taper sleeve, the flange 4 is sleeved on the outer wall of the large diameter end of the tuyere large sleeve 3, and the flange 4 is fixed with a furnace shell 9 of a blast furnace (prior art);
the structure 100 for preventing the gas leakage of the tuyere comprises a plurality of pressing plates 5 which can axially abut against and fix a tuyere large sleeve 3 and a flange 4, wherein each pressing plate 5 comprises a bent plate part 50 which is arranged between the tuyere large sleeve 3 and the flange 4 in a spanning mode, one end of each bent plate part 50 is provided with a first top plate part 51 which can abut against the end face of the flange 4, and the other end of each bent plate part 50 is provided with a second top plate part 52 which can axially abut against the end face (the end face at one end with a large diameter) of the tuyere large sleeve 3; the structure 100 for preventing the gas leakage of the tuyere further comprises an outer conical surface 81 arranged on the outer wall of the tuyere large sleeve 3 and an inner conical surface 82 arranged on the inner wall of the flange 4, the outer conical surface 81 can be in sealing abutting contact with the inner conical surface 82, and a sealing ring 83 is arranged between the outer conical surface 81 and the inner conical surface 82.
According to the structure for preventing the gas leakage of the tuyere, the pressing plate is connected with the tuyere large sleeve and the flange to replace the bolt connection in the prior art, and the pressing plate is fixedly propped against the end surfaces of the tuyere large sleeve and the flange to play a role in fixing the tuyere large sleeve, so that the structure is simple and the installation is convenient; the side wall joint surface of the tuyere large sleeve and the flange is abutted by adopting conical surface sealing and is tightly matched, so that the function of sealing the joint surface of the tuyere large sleeve and the flange is achieved, and main sealing is formed; a sealing ring is arranged between the outer conical surface and the inner conical surface, and a main seal in hard contact is supplemented by a sealing flange of the sealing ring and a large sleeve combining surface of the tuyere, so that coal gas is sealed, and a first layer of auxiliary sealing effect is achieved; the invention has simple structure, can effectively prevent the gas leakage in the tuyere area, ensures the safety of the tuyere area, and is an effective means for realizing the low-consumption and safe production of the blast furnace.
Further, as shown in fig. 1, 2 and 3, the structure 100 for preventing the leakage of the tuyere gas further comprises at least 3 pin wedge plates 6 circumferentially arranged on the end surface of the flange 4 at intervals, wherein the number of the pin wedge plates 6 is the same as that of the pressure plates 5; each pin wedge plate 6 is provided with a press wedge through groove 61 which is through along the radial direction of the flange, each press plate 5 respectively penetrates through each press wedge through groove 61 and the bent plate part 50 thereof is arranged in the press wedge through groove 61 in a spanning mode, a wedge plate 7 is arranged at one end, far away from the flange 4, of the bent plate part 50 in each press wedge through groove 61 in a wedging mode, the wedge plate 7 is used for fixedly pressing the press plate 5, and the wedge plate 7 is arranged in a trapezoidal plate mode. The pressing plate 5 adopts a wedge plate type fixing and pressing mode, so that the fixing mode of the pressing plate 5 is more flexible, the pressing plate is suitable for pressing plates with various lengths, and the structure is simple, and the installation and the disassembly are convenient.
Further, as shown in fig. 6, since the large-diameter end of the tuyere large sleeve 3 is located in the flange, the axial lengths of the two ends of the pressure plate 5 should be different, and in the present embodiment, the length dimension of the first top plate portion 51 of the pressure plate 5 in the axial direction of the flange 4 is smaller than the length dimension of the second top plate portion 52 of the pressure plate 5 in the axial direction of the flange 4.
As shown in fig. 3, 4, and 5, in the present embodiment, each pin wedge plate 6 is provided as a rectangular plate, one end of each pin wedge plate 6 is recessed inward to form a wedge penetration groove 61, and the wedge penetration groove 61 is provided as a rectangular cutout. In a specific embodiment of the present invention, the number of the pin wedge plates 6, the pressing plate 5 and the wedge plates 7 is 4, each pin wedge plate 6 is circumferentially and uniformly arranged on the end surface of the flange 4 at intervals, and each pin wedge plate 6 is welded and fixed on the end surface of the flange 4, so that the pressing plate 5 is stably pressed and fixed.
As shown in fig. 1, the present invention further provides a tuyere structure 200, which comprises a tuyere small sleeve 1, a tuyere medium sleeve 2 and a tuyere large sleeve 3, wherein the tuyere small sleeve 1, the tuyere medium sleeve 2 and the tuyere large sleeve 3 are nested inside and outside and are all arranged in a taper sleeve structure, and the large diameter end of the tuyere small sleeve 1 is hermetically sleeved inside the small diameter end of the tuyere medium sleeve 2; the large-diameter end of the tuyere medium sleeve 2 is hermetically arranged at the inner side of the small-diameter end of the tuyere large sleeve 3; the flange 4 is sleeved on the outer wall of one end with the large diameter of the tuyere large sleeve 3, and a structure 100 for preventing the gas leakage of the tuyere is arranged between the tuyere large sleeve 3 and the flange 4. The tuyere large sleeve 3 and the flange 4 are both made of cast steel materials and can be welded at a joint after installation so as to play a role in secondary layer auxiliary sealing, increase the sealing performance and ensure the safety of the tuyere area.
Further, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, and fig. 6, the structure 100 for preventing the leakage of the tuyere gas comprises a plurality of pressing plates 5 capable of axially abutting against and fixing the tuyere large sleeve 3 and the flange 4, the pressing plates 5 comprise bent plate portions 50 spanning between the tuyere large sleeve 3 and the flange 4, one end of each bent plate portion 50 is provided with a first top plate portion 51 capable of abutting against the end surface of the flange 4, and the other end of each bent plate portion 50 is provided with a second top plate portion 52 capable of axially abutting against the end surface of the tuyere large sleeve 3; the structure 100 for preventing the gas leakage of the tuyere further comprises an outer conical surface 81 arranged on the outer wall of the large-diameter end of the tuyere large sleeve 3 and an inner conical surface 82 arranged on the inner wall of the flange 4, the outer conical surface 81 can be in sealing abutting contact with the inner conical surface 82, and a sealing ring 83 is arranged between the outer conical surface 81 and the inner conical surface 82.
In the present embodiment, as shown in fig. 1 and 2, a sealing ring groove 31 is provided on the outer tapered surface 81 of the tuyere large sleeve 3, a sealing ring 83 is clamped in the sealing ring groove 31, and the radially outer side of the sealing ring 83 abuts against the inner tapered surface 82 of the flange 4. The sealing ring 83 is resistant to high-temperature gas and has certain elasticity, the gas is sealed through the joint surface of the sealing ring 83 and the flange 4, the traditional single seal (conical surface abutting) of the joint surface which is in hard contact is supplemented, and the first layer of auxiliary sealing effect is achieved.
Further, as shown in fig. 1, 2 and 3, the structure 100 for preventing the leakage of the tuyere gas further comprises at least 3 pin wedge plates 6 circumferentially arranged on the end surface of the flange 4 at intervals, wherein the number of the pin wedge plates 6 is the same as that of the pressure plates 5; each pin wedge plate 6 is provided with a press wedge through groove 61 which is through along the radial direction of the flange, each press plate 5 respectively penetrates through each press wedge through groove 61 and the bent plate part 50 thereof is arranged in the press wedge through groove 61 in a spanning mode, a wedge plate 7 is arranged at one end, far away from the flange 4, of the bent plate part 50 in each press wedge through groove 61 in a wedging mode, the wedge plate 7 is used for fixedly pressing the press plate 5, and the wedge plate 7 is arranged in a trapezoidal plate mode. The pressing plate 5 adopts a wedge plate type fixing and pressing mode, so that the fixing mode of the pressing plate 5 is more flexible, the pressing plate is suitable for pressing plates with various lengths, and the structure is simple, and the installation and the disassembly are convenient.
In the tuyere sleeve structure provided by the invention, a structure for preventing gas leakage of the tuyere is adopted, and the tuyere sleeve and the flange are welded at the joint to play a role of secondary sealing, so that triple sealing between the tuyere sleeve and the flange is realized, the sealing property is increased, the safety of the tuyere area can be effectively ensured, and the tuyere sleeve structure is an effective means for realizing low consumption and safety of a blast furnace.
When the tuyere sleeve structure 200 is manufactured, an outer conical surface 81 is processed on the outer wall of the large-diameter end of the tuyere large sleeve 3, a sealing ring groove 31 is formed in the outer conical surface 81, an inner conical surface 82 is processed on the inner wall of the flange 4, after the body of the flange 4 is manufactured, four pin wedge plates 6 are welded on the end surface far away from the end of the tuyere large sleeve, the pin wedge plates 6 are arranged at a certain angle, and other parts of the tuyere sleeve structure 200 are processed according to the prior art.
When the tuyere large sleeve 3 is installed, the flange 4 is installed on a furnace shell, the outer wall of the flange 4 is fixedly welded with the furnace shell 9, the sealing ring 83 is installed in the sealing ring groove 31 of the tuyere large sleeve 3, then the tuyere large sleeve 3 is pushed into the flange 4, the joint surface is required to be in tight contact, and the outer conical surface 81 is in sealing abutting contact with the inner conical surface 82; and then the pressing plate 5 penetrates through the pressing wedge through groove 61 on the pin wedge plate 6, the first top plate part 51 and the second top plate part 52 of the pressing plate 5 are respectively propped against the end surfaces of the tuyere large sleeve 3 and the flange 4, finally the wedge plate 7 penetrates through the pressing wedge through groove 61 on the pin wedge plate 6 to tightly press the pressing plate 5, and the tuyere large sleeve 3 is tightly pressed. After all the installation is finished, the outer end of the joint surface of the tuyere large sleeve 3 and the flange 4 can be welded for further sealing.
From the above, the structure for preventing the gas leakage of the tuyere and the tuyere sleeve structure provided by the invention have the following beneficial effects:
according to the structure for preventing the gas leakage of the tuyere, the pressing plate is connected with the tuyere large sleeve and the flange to replace the bolt connection in the prior art, and the pressing plate is fixedly propped against the end surfaces of the tuyere large sleeve and the flange to play a role in fixing the tuyere large sleeve, so that the structure is simple and the installation is convenient; the side wall joint surface of the tuyere large sleeve and the flange is abutted by adopting conical surface sealing and is tightly matched, so that the function of sealing the joint surface of the tuyere large sleeve and the flange is achieved, and main sealing is formed; a sealing ring is arranged between the outer conical surface and the inner conical surface, and a main seal in hard contact is supplemented by a sealing flange of the sealing ring and a large sleeve combining surface of the tuyere, so that coal gas is sealed, and a first layer of auxiliary sealing effect is achieved; the invention has simple structure, can effectively prevent the gas leakage in the tuyere area, ensures the safety of the tuyere area, and is an effective means for realizing the low consumption and safe production of the blast furnace;
in the tuyere sleeve structure provided by the invention, a structure for preventing gas leakage of the tuyere is adopted, and the tuyere sleeve and the flange are welded at the joint to play a role of secondary sealing, so that triple sealing between the tuyere sleeve and the flange is realized, the sealing property is increased, the safety of the tuyere area can be effectively ensured, and the tuyere sleeve structure is an effective means for realizing low consumption and safety of a blast furnace.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (10)
1. A structure for preventing gas leakage of a tuyere is used between a tuyere large sleeve and a flange which are internally and externally sleeved in a stacking manner, and is characterized by comprising a plurality of pressing plates capable of axially abutting against and fixing the tuyere large sleeve and the flange, wherein each pressing plate comprises a bent plate part which is arranged between the tuyere large sleeve and the flange in a spanning manner, one end of each bent plate part is provided with a first top plate part capable of abutting against the end surface of the flange, and the other end of each bent plate part is provided with a second top plate part capable of axially abutting against the end surface of the tuyere large sleeve; the structure for preventing the gas leakage of the tuyere further comprises an outer conical surface arranged on the outer wall of the tuyere large sleeve and an inner conical surface arranged on the inner wall of the flange, the outer conical surface can be in sealing abutting connection with the inner conical surface, and a sealing ring is arranged between the outer conical surface and the inner conical surface.
2. The structure for preventing tuyere gas leakage of claim 1, further comprising at least 3 pin wedge plates circumferentially spaced on the end surface of the flange, the number of the pin wedge plates being the same as the number of the pressure plates; and each pin wedge plate is provided with a pressing wedge through groove which is radially communicated along the flange, each pressing plate respectively penetrates through each pressing wedge through groove, a bent plate part of each pressing wedge through groove is arranged in the pressing wedge through groove in a spanning mode, one end, which is located at the bent plate part and is far away from the flange, of each pressing wedge through groove is provided with a wedge plate in a wedging mode, and the wedge plates are used for fixedly pressing the pressing plates.
3. The structure for preventing tuyere gas leakage according to claim 2, wherein a length dimension of the first top plate portion of the pressure plate in the axial direction of the flange is smaller than a length dimension of the second top plate portion of the pressure plate in the axial direction of the flange.
4. The structure for preventing tuyere gas leakage according to claim 2, wherein each of the pin wedge plates is a rectangular plate, one end of each of the pin wedge plates is inwardly recessed with the press wedge through groove, and the press wedge through groove is a rectangular opening.
5. The structure for preventing tuyere gas leakage according to claim 2, wherein the number of the pin wedge plates, the pressing plate and the wedge plates is 4, and each of the pin wedge plates is circumferentially and uniformly spaced on the end surface of the flange.
6. A tuyere sleeve structure is characterized by comprising a small tuyere sleeve, a middle tuyere sleeve and a large tuyere sleeve which are internally and externally overlapped and are arranged in a taper sleeve structure, wherein one end with a large diameter of the small tuyere sleeve is hermetically sleeved on the inner side of one end with a small diameter of the middle tuyere sleeve; the large-diameter end of the tuyere medium sleeve is hermetically arranged at the inner side of the small-diameter end of the tuyere large sleeve; the flange is sleeved on the outer wall of the large-diameter end of the tuyere large sleeve, and a structure for preventing gas leakage of the tuyere is arranged between the tuyere large sleeve and the flange.
7. The tuyere sleeve structure of claim 6, wherein the structure for preventing the leakage of the tuyere gas comprises a plurality of pressing plates capable of axially abutting against the fixed tuyere large sleeve and the flange, the pressing plates comprise bent plate portions spanning between the tuyere large sleeve and the flange, one end of each bent plate portion is provided with a first top plate portion capable of abutting against the end surface of the flange, and the other end of each bent plate portion is provided with a second top plate portion capable of axially abutting against the end surface of the tuyere large sleeve; the structure for preventing the gas leakage of the tuyere further comprises an outer conical surface arranged on the outer wall of the large-diameter end of the tuyere large sleeve and an inner conical surface arranged on the inner wall of the flange, the outer conical surface can be in sealing abutting connection with the inner conical surface, and a sealing ring is arranged between the outer conical surface and the inner conical surface.
8. The tuyere sleeve structure of claim 7, wherein the structure for preventing gas leakage from the tuyere further comprises at least 3 pin wedge plates circumferentially spaced on the end surface of the flange, the number of the pin wedge plates being the same as the number of the pressure plates; and each pin wedge plate is provided with a pressing wedge through groove which is radially communicated along the flange, each pressing plate respectively penetrates through each pressing wedge through groove, a bent plate part of each pressing wedge through groove is arranged in the pressing wedge through groove in a spanning mode, one end, which is located at the bent plate part and is far away from the flange, of each pressing wedge through groove is provided with a wedge plate in a wedging mode, and the wedge plates are used for fixedly pressing the pressing plates.
9. The tuyere cover structure of claim 8, wherein each of the pin wedge plates is a rectangular plate, one end of each of the pin wedge plates is inwardly recessed with the wedge pressing through groove, and the wedge pressing through groove is a rectangular opening.
10. The tuyere cover structure of claim 7, wherein a sealing ring groove is annularly formed on the outer conical surface of the tuyere large cover, the sealing ring is clamped in the sealing ring groove, and the radially outer side of the sealing ring is supported against the inner conical surface of the flange in a sealing manner.
Priority Applications (1)
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603106A (en) * | 2009-07-21 | 2009-12-16 | 新兴铸管股份有限公司 | A kind of blast furnace ironmaking tuyere big sleeve and sealing-installing method thereof |
| CN203530354U (en) * | 2013-10-25 | 2014-04-09 | 湖北新冶钢特种钢管有限公司 | Blast-furnace tuyere-cooler casing based gas leakage prevention device and blast furnace adopting same |
| CN103924017A (en) * | 2014-04-18 | 2014-07-16 | 攀钢集团成都钢钒有限公司 | Method for replacing tuyere-cooler casing of blast furnace |
| US20150021837A1 (en) * | 2011-11-09 | 2015-01-22 | Paul Wurth S.A. | System of leaktight connection between a tuyere and a hot blast inlet nozzle for a shaft furnace, and steel-making blast furnace comprising such a system |
| CN204455156U (en) * | 2015-01-13 | 2015-07-08 | 中冶东方工程技术有限公司 | A kind of blast-furnace tuyere |
| CN106435076A (en) * | 2016-09-18 | 2017-02-22 | 中冶华天南京工程技术有限公司 | Blast furnace tuyere equipment with pressing device and installation method thereof |
| CN208791676U (en) * | 2018-10-08 | 2019-04-26 | 高金平 | A kind of blast-furnace tuyere for preventing from upwarping |
| CN208964956U (en) * | 2018-11-14 | 2019-06-11 | 马鞍山钢铁股份有限公司 | A kind of blast-furnace tuyere device with compression and sealing function |
| CN110206886A (en) * | 2019-07-03 | 2019-09-06 | 山东钢铁股份有限公司 | A kind of inner room sealing device |
| CN212316155U (en) * | 2020-07-14 | 2021-01-08 | 中冶京诚工程技术有限公司 | Structure for preventing gas leakage of tuyere and tuyere sleeve structure |
-
2020
- 2020-07-14 CN CN202010673822.1A patent/CN111719030A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603106A (en) * | 2009-07-21 | 2009-12-16 | 新兴铸管股份有限公司 | A kind of blast furnace ironmaking tuyere big sleeve and sealing-installing method thereof |
| US20150021837A1 (en) * | 2011-11-09 | 2015-01-22 | Paul Wurth S.A. | System of leaktight connection between a tuyere and a hot blast inlet nozzle for a shaft furnace, and steel-making blast furnace comprising such a system |
| CN203530354U (en) * | 2013-10-25 | 2014-04-09 | 湖北新冶钢特种钢管有限公司 | Blast-furnace tuyere-cooler casing based gas leakage prevention device and blast furnace adopting same |
| CN103924017A (en) * | 2014-04-18 | 2014-07-16 | 攀钢集团成都钢钒有限公司 | Method for replacing tuyere-cooler casing of blast furnace |
| CN204455156U (en) * | 2015-01-13 | 2015-07-08 | 中冶东方工程技术有限公司 | A kind of blast-furnace tuyere |
| CN106435076A (en) * | 2016-09-18 | 2017-02-22 | 中冶华天南京工程技术有限公司 | Blast furnace tuyere equipment with pressing device and installation method thereof |
| CN208791676U (en) * | 2018-10-08 | 2019-04-26 | 高金平 | A kind of blast-furnace tuyere for preventing from upwarping |
| CN208964956U (en) * | 2018-11-14 | 2019-06-11 | 马鞍山钢铁股份有限公司 | A kind of blast-furnace tuyere device with compression and sealing function |
| CN110206886A (en) * | 2019-07-03 | 2019-09-06 | 山东钢铁股份有限公司 | A kind of inner room sealing device |
| CN212316155U (en) * | 2020-07-14 | 2021-01-08 | 中冶京诚工程技术有限公司 | Structure for preventing gas leakage of tuyere and tuyere sleeve structure |
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