CN215560429U - Circular seam type bottom blowing air supply element with double air chambers - Google Patents
Circular seam type bottom blowing air supply element with double air chambers Download PDFInfo
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Abstract
The utility model provides an annular seam type bottom blowing air supply element with double air chambers, which comprises an air permeable core and a base, wherein the base comprises a flange, an outer ring air inlet chamber is arranged on the surface of one side of the flange, and one end of the air permeable core penetrates through the wall of the outer ring air inlet chamber after penetrating through the flange. The outer ring air inlet chamber outer wall be provided with the inner ring inlet chamber, the ventilative core one end of running through the outer ring inlet chamber be provided with the inner ring inlet chamber, the volume ratio of outer ring inlet chamber and inner ring inlet chamber is (20 ~ 60): 1. in the utility model, the large-volume outer ring air inlet chamber is arranged, so that the stability of air supply can be effectively improved, the pressure fluctuation of bottom blowing air supply is small, and the slit is prevented from being blocked; the melting loss of the top of the gas supply element is reduced, so that the service life of the gas supply element is prolonged, and the metallurgical effect of bottom blowing is ensured. Compared with the traditional small air chamber, the large-volume cavity reduces the resistance drop of air filtration, thereby saving energy and improving the stability of an air supply system.
Description
Technical Field
The utility model belongs to the technical field of metallurgy, relates to an air supply element, and particularly relates to an annular seam type bottom blowing air supply element with double air chambers.
Background
With the development of scientific technology and industrial requirements, the requirements on the quality of steel are higher and higher, the smelting proportion of special steel is continuously increased, the environmental protection pressure is also increased day by day, and how to improve the yield and reduce the energy consumption becomes a key technical problem to be solved urgently.
The bottom blowing argon is an important means in the ladle refining process, and the bottom blowing gas supply element is a core element which blows inert gas into the ladle through a bottom tail pipe of a gas permeable core to realize the functions of stirring molten steel, homogenizing molten steel components and temperature, promoting floating of non-metallic inclusions, shortening smelting time and the like, consists of the gas permeable core and a base and is usually arranged at the bottom of the ladle. At present, steel refining mainly uses two types, namely a circular seam tube type and a dispersion type air brick type. The dispersive air brick has lower strength and density, poorer impact resistance, unsatisfactory oxygen gas blowing resistance, erosion resistance and permeability resistance, poor stirring effect on molten steel and short service life. Therefore, the circumferential seam tube type gas supply element is more widely applied. The structural design of the circular seam tube type gas supply element is crucial to smelting, and is related to smelting progress and production energy, furnace body service life, loss and cost. At present, most of domestic large-scale steel plants use a bottom air supply mode.
CN101487072B discloses a multi-functional circumferential weld formula air feed element of steelmaking, belongs to steelmaking technical field. The component comprises a gas injection pipe, a mounting flange, a gas distribution chamber and an air inlet chamber; the gas injection pipe is formed by concentrically sleeving 2-5 layers of pipes, the innermost layer of pipe is called as a central pipe, the width of a circular seam gap between every two layers of pipes is 0.2-3.0 mm, and stainless steel surfacing points or ribs are adopted to ensure the accurate positioning of the gap width, so that molten steel cannot wet the inner wall of the steel pipe, and the steel pipe is not easy to fill and block; the mounting flange is connected with the gas ejector pipe, the gas distribution chamber is connected with the mounting flange, gas conveyed from the gas inlet chamber is distributed to enter all the circular seams of the gas ejector pipe to be ejected, and the gas inlet chamber is connected with the gas distribution chamber. The method has the advantages that the furnace life of the combined blown converter is improved from more than 2000 furnaces to more than 10000 furnaces, the furnace life is over 30000 furnaces at most, the combined blown ratio is 100%, and a bottom blowing gas supply element is not replaced in the whole furnace service period, so that the worldwide metallurgy problem of low service life of the combined blown converter is solved.
CN112212700A discloses a circular seam type gas supply element and a gas supply method, belongs to the technical field of metallurgy, and solves the problem that high-strength gas injection under the conditions of a thin slag layer, a slag-free layer or a complex process cannot be realized in the prior art. The circular seam type gas supply element comprises a central tube, an inner sleeve, an outer gas chamber and an inner gas chamber located in the outer gas chamber, wherein the central tube, the inner sleeve and the outer sleeve are sequentially sleeved, at least one inner circular seam is formed between the central tube and the inner sleeve, at least one outer circular seam is formed between the inner sleeve and the outer sleeve, the inner circular seam is communicated with the inner gas chamber, and the outer circular seam is communicated with the outer gas chamber. The gas supply method is characterized in that internal gas is blown into a metal molten pool of a metallurgical furnace through an internal gas chamber and an internal annular gap in sequence; and/or the outer gas is blown into a metal melting pool of the metallurgical furnace sequentially through an outer gas chamber and an outer annular seam; the inner gas and the outer gas may be the same or different in kind. The gas supply element and the gas supply method can be used for high-intensity gas blowing of a metallurgical furnace.
CN201081561Y discloses a bottom blowing gas supply element of an alarm type electric arc furnace. An alarm steel pipe with a closed end part is embedded at the bottom in the gas supply element below a safety height line of the gas supply element, and the alarm steel pipe is welded on a bottom plate of the gas chamber and is communicated with an alarm gas inlet pipe, and the inlet gas of the alarm steel pipe is independent of a bottom blowing gas inlet pipe, is led out of the gas chamber and is connected with a gas supply system; in addition, the alarm steel pipe is connected with a flow detection device. Compared with the prior art, the utility model can obviously alarm when the bottom blowing air supply element is corroded to an unsafe height; the method has the advantages that when unsafe signals appear, operators can replace the bottom blowing gas supply element of the electric arc furnace in time, so that the reasonable utilization of the gas supply element is ensured, and the production safety is also ensured.
The air feed component that prior art discloses, can reach the fine air feed component and the long furnace age's of matching effect, but can not carry out the accurate control of differentiation to each circumferential weld in a flexible way, the technical problem of multiple circumferential weld independent control has been solved, but owing to adopted the structure of buckling of a plurality of right angles and the circumferential weld pipe to link to each other, the structure is complicated, make and let in gas and turn to suddenly in the pipeline inside, the resistance when having increaseed gas transport, velocity of flow and flow reduce, molten steel stirring effect is unsatisfactory, therefore, need to develop an air feed component who solves above-mentioned problem and satisfy the production needs.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide the circular seam type bottom blowing air supply element with the double air chambers, and in the circular seam type bottom blowing air supply element, the stability of air supply can be effectively improved by arranging the large-volume outer annular air inlet chamber, so that the pressure fluctuation of bottom blowing air supply is small, and the slit is prevented from being blocked; the melting loss of the top of the gas supply element is reduced, so that the service life of the gas supply element is prolonged, and the metallurgical effect of bottom blowing is ensured. In addition, compared with the traditional small air chamber, the large-volume cavity reduces the resistance drop of air filtration, so that energy can be saved, and the stability of an air supply system can be improved.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides an annular seam type bottom blowing air supply element with double air chambers, which comprises an air permeable core and a base, wherein the air permeable core is fixedly connected with the base, the base comprises a flange, an outer ring air inlet chamber is arranged on one side surface of the flange, and one end of the air permeable core penetrates through the wall of the outer ring air inlet chamber after penetrating through the flange. The outer ring air inlet chamber outer wall be provided with the inner ring inlet chamber, the ventilative core one end of running through the outer ring inlet chamber be provided with the inner ring inlet chamber, the volume ratio of outer ring inlet chamber and inner ring inlet chamber is (20 ~ 60): 1, for example, may be 20: 1. 30: 1. 40: 1. 50: 1. 60: 1, but not limited to the recited values, and other unrecited values within the range are equally applicable.
In the utility model, the large-volume outer ring air inlet chamber is arranged, so that the stability of air supply can be effectively improved, the pressure fluctuation of bottom blowing air supply is small, and the slit is prevented from being blocked; the melting loss of the top of the gas supply element is reduced, so that the service life of the gas supply element is prolonged, and the metallurgical effect of bottom blowing is ensured. In addition, compared with the traditional small air chamber, the large-volume cavity reduces the resistance drop of air filtration, so that energy can be saved, and the stability of an air supply system can be improved.
As a preferable technical solution of the present invention, the air-permeable core includes a first pipe, a second pipe and a third pipe which are nested from inside to outside in sequence.
It should be noted that the present invention does not specifically require and limit the structural features of the pipeline such as size, shape, material, etc., and the function of the pipeline in the present invention is to form a circular seam type gas permeable core to form an inner ring cavity and an outer ring cavity, and the preferred material is 2Cr25Ni20 heat-resistant stainless steel material, so it can be understood that other pipelines capable of achieving such functions can be used in the present invention, and those skilled in the art can adaptively adjust the size, shape and material of the pipeline according to the use scenario and test conditions.
The first pipeline is filled with refractory materials, an inner ring cavity is formed between the first pipeline and the second pipeline, and an outer ring cavity is formed between the second pipeline and the third pipeline.
It should be noted that the present invention does not specifically require and limit the structural features of the refractory material, such as size, shape, and material, and the refractory material in the present invention is used to fill the first duct to form the circular seam type air permeable core, and has the function of heat insulation and fire resistance, so it can be understood that other refractory materials capable of achieving such functions can be used in the present invention, and those skilled in the art can adjust the size, shape, and material of the refractory material according to the use scenario and test conditions.
As a preferable technical solution of the present invention, the lower end of the third pipe is flush with the lower surface of the flange, and the lower ends of the first pipe and the second pipe are flush with the lower surface of the outer ring air inlet chamber.
It should be noted that the present invention does not specifically require and limit the structural features of the flange such as size, shape, and material, and the flange in the present invention is used to connect the air permeable core to form the air supply element, and fixedly connect the outer ring air inlet chamber and the inner ring air inlet chamber, so it can be understood that other flanges capable of achieving such functions can be used in the present invention, and those skilled in the art can adaptively adjust the size, shape, and material of the flange according to the use scenario and the test condition.
In a preferred embodiment of the present invention, the thickness of the first pipe is 1 to 2mm, and may be, for example, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, or 2.0mm, but the present invention is not limited to the above-mentioned values, and other values not listed in the above-mentioned range are also applicable.
The length of the first pipe is 1 to 1.8m, and may be, for example, 1m, 1.1m, 1.2m, 1.3m, 1.4m, 1.5m, 1.6m, 1.7m, 1.8m, but is not limited to the above-mentioned values, and other values not mentioned in the above-mentioned range are also applicable.
The thickness of the second pipe is 1 to 2mm, and may be, for example, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, or 2.0mm, but is not limited to the above-mentioned values, and other values not mentioned in the above-mentioned range are also applicable.
The length of the second pipe is 1 to 1.8m, and may be, for example, 1m, 1.1m, 1.2m, 1.3m, 1.4m, 1.5m, 1.6m, 1.7m, 1.8m, but is not limited to the above-mentioned values, and other values not mentioned in the above-mentioned range are also applicable.
The thickness of the third pipe is 1 to 1.5mm, and may be, for example, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, or 1.5mm, but is not limited to the above-mentioned values, and other values not shown in the above-mentioned value range are also applicable.
The third pipe has a length of 1 to 1.5m, and may be, for example, 1m, 1.1m, 1.2m, 1.3m, 1.4m, or 1.5m, but is not limited to the above-mentioned values, and other values not shown in the above-mentioned values are also applicable.
As a preferable technical solution of the present invention, the third pipeline is connected to the outer ring air inlet, and the first pipeline and the second pipeline are connected to the inner ring air inlet.
As a preferable technical solution of the present invention, the outer ring air inlet chamber and the inner ring air inlet chamber are two independent air inlet chambers.
In a preferred embodiment of the present invention, the height of the outer ring intake chamber is 30 to 100mm, and may be, for example, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, or 100mm, but the present invention is not limited to the above-mentioned values, and other values not listed in the above-mentioned range are also applicable.
The diameter of the outer ring air inlet chamber is 160-260 mm, for example, 160mm, 170mm, 180mm, 190mm, 200mm, 210mm, 220mm, 230mm, 240mm, 250mm, 260mm, but is not limited to the values listed, and other values not listed in the range of the values are also applicable.
As a preferable technical scheme, the outer ring air inlet chamber comprises a first chamber and an air inlet chamber communicated with the first chamber, the air inlet chamber and the inner ring air inlet chamber are symmetrically arranged, the air inlet chamber and the inner ring air inlet chamber are respectively provided with an outer ring air inlet interface and an inner ring air inlet interface, part of air enters the outer ring air inlet chamber from bottom to top through the outer ring air inlet interface and then is discharged through the outer ring cavity, and part of air enters the inner ring air inlet chamber from bottom to top through the inner ring air inlet interface and then is discharged through the inner ring cavity.
As a preferable technical solution of the present invention, a communication part between the first chamber and the air inlet chamber communicated with the first chamber, and a penetrating part of the air permeable core penetrating through the outer ring air inlet chamber are provided with a filtering device, and the filtering device is a gas filter.
It should be noted that the present invention does not specifically require and limit the structural features of the gas filter such as size, shape, and material, and the gas filter functions to filter the gas entering the inner ring inlet chamber and the outer ring inlet chamber from below, so it is understood that other gas filters capable of performing such functions can be used in the present invention, and those skilled in the art can adapt the size, shape, and material of the gas filter according to the use scenario and test conditions.
As a preferred technical scheme, the connecting mode of the air permeable core and the base is welding, and the welding adopts argon arc welding.
It should be noted that the welding method of the present invention is not specifically required or limited, and the welding method of the present invention is used to fixedly connect the flange, the outer ring intake chamber, the inner ring intake chamber and the gas permeable core, and can achieve the sealing effect, so it can be understood that other welding methods capable of achieving such functions can be used in the present invention, and those skilled in the art can adaptively adjust the welding method according to the use scenario and the test condition.
Illustratively, the working principle of the circular seam type bottom blowing gas supply element with the double gas chambers provided by the utility model is that part of gas enters the outer ring gas inlet chamber from bottom to top through the outer ring gas inlet interface and then is discharged through the outer ring cavity, and part of gas enters the inner ring gas inlet chamber from bottom to top through the inner ring gas inlet interface and then is discharged through the inner ring cavity.
Compared with the prior art, the utility model has the beneficial effects that:
in the utility model, the large-volume outer ring air inlet chamber is arranged, so that the stability of air supply can be effectively improved, the pressure fluctuation of bottom blowing air supply is small, and the slit is prevented from being blocked; the melting loss of the top of the gas supply element is reduced, so that the service life of the gas supply element is prolonged, and the metallurgical effect of bottom blowing is ensured. In addition, compared with the traditional small air chamber, the large-volume cavity reduces the resistance drop of air filtration, so that energy can be saved, and the stability of an air supply system can be improved.
Drawings
FIG. 1 is a schematic structural diagram of a circular seam type bottom blowing gas supply element with double air chambers according to an embodiment of the present invention;
wherein, 1-the gas permeable core; 2-refractory materials; 3-a flange; 4-outer ring air inlet; 5-an outer ring air inlet chamber; 6-inner ring air inlet chamber; 7-a gas filter; 8-outer ring air inlet interface; 9-inner ring air inlet interface; 10-inner ring air inlet; 11-first chamber.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
In a specific embodiment, the utility model provides an annular seam type bottom blowing air supply element with double air chambers, as shown in fig. 1, the annular seam type bottom blowing air supply element comprises an air permeable core 1 and a base, the air permeable core 1 is fixedly connected with the base, the base comprises a flange 3, an outer ring air inlet chamber 5 is arranged on one side surface of the flange 3, and one end of the air permeable core 1 penetrates through the wall of the outer ring air inlet chamber 5 after penetrating through the flange 3.
The outer wall of the outer ring air inlet chamber 5 is provided with an inner ring air inlet chamber 6, one end of the air permeable core 1 penetrating through the outer ring air inlet chamber 5 is provided with the inner ring air inlet chamber 6, and the volume ratio of the outer ring air inlet chamber 5 to the inner ring air inlet chamber 6 is (20-60): 1, for example, may be 20: 1. 30: 1. 40: 1. 50: 1. 60: 1, but not limited to the recited values, and other unrecited values within the range are equally applicable.
In the utility model, the large-volume outer ring air inlet chamber 5 is arranged, so that the stability of air supply can be effectively improved, the pressure fluctuation of bottom blowing air supply is small, and the slit is prevented from being blocked; the melting loss of the top of the gas supply element is reduced, so that the service life of the gas supply element is prolonged, and the metallurgical effect of bottom blowing is ensured. In addition, compared with the traditional small air chamber, the large-volume cavity reduces the resistance drop of air filtration, so that energy can be saved, and the stability of an air supply system can be improved.
The air-permeable core 1 comprises a first pipeline, a second pipeline and a third pipeline which are sequentially nested from inside to outside.
It should be noted that the present invention does not specifically require and specially limit the structural features of the pipeline, such as size, shape, material, etc., and the function of the pipeline in the present invention is to form the circular seam type air permeable core 1 to form the inner ring cavity and the outer ring cavity, so it can be understood that other pipelines capable of realizing such functions can be used in the present invention, and those skilled in the art can adaptively adjust the size, shape and material of the pipeline according to the use scenario and the test condition.
The first pipeline is filled with refractory materials 2, an inner ring cavity is formed between the first pipeline and the second pipeline, and an outer ring cavity is formed between the second pipeline and the third pipeline.
It should be noted that the present invention does not specifically require and limit the structural features such as the size, shape, and material of the refractory 2, and the refractory 2 in the present invention is used to fill the first duct to form the annular gap type air-permeable core 1 and has the functions of heat insulation and fire resistance, so it can be understood that other refractory 2 capable of achieving such functions can be used in the present invention, and those skilled in the art can adjust the size, shape, and material of the refractory 2 according to the use scenario and the test conditions.
The lower end of the third pipeline is flush with the lower surface of the flange 3, and the lower ends of the first pipeline and the second pipeline are flush with the lower surface of the outer ring air inlet chamber 5.
It should be noted that the present invention does not specifically require and limit the structural features of the flange 3, such as size, shape, and material, and the flange 3 serves to connect the air permeable core 1 to form the air supply element, and fixedly connect the outer ring air inlet chamber 5 and the inner ring air inlet chamber 6, so it can be understood that other flanges 3 capable of implementing such functions can be used in the present invention, and those skilled in the art can adaptively adjust the size, shape, and material of the flange 3 according to the use scenario and the test conditions.
The thickness of the first pipe is 1 to 2mm, and may be, for example, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, or 2.0mm, but is not limited to the values listed, and other values not listed in the numerical range are also applicable.
The length of the first pipe is 1 to 1.8m, and may be, for example, 1m, 1.1m, 1.2m, 1.3m, 1.4m, 1.5m, 1.6m, 1.7m, 1.8m, but is not limited to the above-mentioned values, and other values not mentioned in the above-mentioned range are also applicable.
The thickness of the second pipe is 1 to 2mm, and may be, for example, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, or 2.0mm, but is not limited to the values listed, and other values not listed in the range of the values are also applicable.
The length of the second pipe is 1 to 1.8m, and may be, for example, 1m, 1.1m, 1.2m, 1.3m, 1.4m, 1.5m, 1.6m, 1.7m, 1.8m, but is not limited to the above-mentioned values, and other values not mentioned in the above-mentioned range are also applicable.
The thickness of the third pipe is 1 to 1.5mm, and may be, for example, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, or 1.5mm, but is not limited to the above-mentioned values, and other values not shown in the above-mentioned range are also applicable.
The third pipe has a length of 1 to 1.5m, and may be, for example, 1m, 1.1m, 1.2m, 1.3m, 1.4m, or 1.5m, but is not limited to the above-mentioned values, and other values not shown in the above-mentioned values are also applicable.
The third pipe is connected with the outer ring air inlet 4, and the first pipe and the second pipe are connected with the inner ring air inlet 10. The outer ring inlet chamber 5 and the inner ring inlet chamber 6 are two separate inlet chambers.
The height of the outer ring intake chamber 5 is 30 to 100mm, and may be, for example, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, or 100mm, but is not limited to the values listed, and other values not listed in the range of the values are also applicable.
The diameter of the outer annular inlet chamber 5 is 160-260 mm, for example 160mm, 170mm, 180mm, 190mm, 200mm, 210mm, 220mm, 230mm, 240mm, 250mm, 260mm, but is not limited to the values listed, and other values not listed in this range are also applicable.
The outer ring air inlet chamber 5 comprises a first chamber 11 and an air inlet chamber communicated with the first chamber 11, the air inlet chamber and the inner ring air inlet chamber 6 are symmetrically arranged, the air inlet chamber and the inner ring air inlet chamber 6 are respectively provided with an outer ring air inlet interface 8 and an inner ring air inlet interface 9, part of air enters the outer ring air inlet chamber 5 from bottom to top through the outer ring air inlet interface 8 and then is discharged through the outer ring cavity, and part of air enters the inner ring air inlet chamber 6 from bottom to top through the inner ring air inlet interface 9 and then is discharged through the inner ring cavity.
The communication part of the first chamber 11 and the air inlet chamber communicated with the first chamber 11 and the penetration part of the air permeable core 1 penetrating the outer ring air inlet chamber 5 are both provided with a filtering device which is a gas filter 7.
It should be noted that the present invention does not specifically require and limit the structural features of the gas filter 7 such as size, shape, and material, and the gas filter 7 is used to filter the gas entering the inner ring inlet chamber 6 and the outer ring inlet chamber 5 from below, so it can be understood that other gas filters 7 capable of achieving such functions can be used in the present invention, and those skilled in the art can adapt the size, shape, and material of the gas filter 7 according to the use scenario and test conditions.
The connection mode of the air permeable core 1 and the base is welding, and specifically, argon arc welding is adopted for welding.
It should be noted that the welding method of the present invention is not specifically required or limited, and the welding method of the present invention is used for fixedly connecting the flange 3, the outer ring intake chamber 5, the inner ring intake chamber 6 and the gas permeable core 1, and can achieve the sealing effect, so it can be understood that other welding methods capable of achieving such functions can be used in the present invention, and those skilled in the art can adaptively adjust the welding method according to the use scenario and the test condition.
In another embodiment, the operation principle of the circular seam type bottom blowing gas supply element with the double gas chambers provided by the utility model is that part of gas enters the outer ring gas inlet chamber 5 from bottom to top through the outer ring gas inlet interface 8 and then is discharged through the outer ring cavity, and part of gas enters the inner ring gas inlet chamber 6 from bottom to top through the inner ring gas inlet interface 9 and then is discharged through the inner ring cavity.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. The annular seam type bottom blowing air supply element with the double air chambers is characterized by comprising an air permeable core and a base, wherein the air permeable core is fixedly connected with the base, the base comprises a flange, an outer ring air inlet chamber is arranged on one side surface of the flange, and one end of the air permeable core penetrates through the wall of the outer ring air inlet chamber after penetrating through the flange;
the outer ring air inlet chamber outer wall be provided with the inner ring inlet chamber, the ventilative core one end of running through the outer ring inlet chamber be provided with the inner ring inlet chamber, the volume ratio of outer ring inlet chamber and inner ring inlet chamber is (20 ~ 60): 1.
2. the double-plenum circular seam type bottom blowing gas supply element according to claim 1, wherein the gas permeable core comprises a first pipeline, a second pipeline and a third pipeline which are nested from inside to outside in sequence;
the first pipeline is filled with refractory materials, an inner ring cavity is formed between the first pipeline and the second pipeline, and an outer ring cavity is formed between the second pipeline and the third pipeline.
3. The double plenum ring bottom blowing element of claim 2 wherein the lower end of the third conduit is flush with the lower surface of the flange and the lower ends of the first and second conduits are flush with the lower surface of the outer ring inlet plenum.
4. The double-plenum circular seam type bottom-blowing gas supply element according to claim 2, wherein the thickness of the first duct is 1 to 2 mm;
the length of the first pipeline is 1-1.8 m;
the thickness of the second pipeline is 1-2 mm;
the length of the second pipeline is 1-1.8 m;
the thickness of the third pipeline is 1-1.5 mm;
the length of the third pipeline is 1-1.5 m.
5. The double plenum ring bottom blown air supply element of claim 2 wherein said third duct connects to an outer ring air inlet and said first and second ducts connect to an inner ring air inlet.
6. The double plenum ring bottom blowing element of claim 1 wherein the outer and inner ring inlet plenums are two separate inlet plenums.
7. The double plenum ring-seam type bottom-blowing air supply unit as claimed in claim 1, wherein the height of the outer ring air intake chamber is 30 to 100mm, and the diameter of the outer ring air intake chamber is 160 to 260 mm.
8. The circular seam type bottom blowing gas supply element with the double gas chambers as claimed in claim 1, wherein the outer ring gas inlet chamber comprises a first chamber and a gas inlet chamber communicated with the first chamber, the gas inlet chamber and the inner ring gas inlet chamber are symmetrically arranged, the gas inlet chamber and the inner ring gas inlet chamber are respectively provided with an outer ring gas inlet interface and an inner ring gas inlet interface, part of gas enters the outer ring gas inlet chamber from bottom to top through the outer ring gas inlet interface and then is discharged through the outer ring cavity, and part of gas enters the inner ring gas inlet chamber from bottom to top through the inner ring gas inlet interface and then is discharged through the inner ring cavity.
9. The circular seam type bottom-blowing gas supply element with double air chambers as claimed in claim 8, wherein the communication part of the first chamber and the gas inlet chamber communicated with the first chamber, and the penetrating part of the gas permeable core penetrating the outer ring gas inlet chamber are provided with a filtering device, and the filtering device is a gas filter.
10. The circular seam type bottom-blowing gas supply element with double air chambers as claimed in claim 1, wherein the connection mode of the gas permeable core and the base is welding, and the welding adopts argon arc welding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121790882.8U CN215560429U (en) | 2021-08-03 | 2021-08-03 | Circular seam type bottom blowing air supply element with double air chambers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121790882.8U CN215560429U (en) | 2021-08-03 | 2021-08-03 | Circular seam type bottom blowing air supply element with double air chambers |
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| CN215560429U true CN215560429U (en) | 2022-01-18 |
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| CN202121790882.8U Active CN215560429U (en) | 2021-08-03 | 2021-08-03 | Circular seam type bottom blowing air supply element with double air chambers |
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| Country | Link |
|---|---|
| CN (1) | CN215560429U (en) |
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