Blast furnace air supply tuyere structure for stable distribution of coal gas flow

Abstract

The utility model relates to the technical field of blast furnace tuyeres, and discloses a blast furnace air supply tuyere structure for stable gas flow distribution. The blast furnace air supply tuyere structure for stable distribution of the coal gas flow comprises an air blowing assembly, an air supply tuyere assembly is installed at the upper end of the air blowing assembly, a lengthened barrel is connected to the upper end of the air supply tuyere assembly, a partition plate is installed in the lengthened barrel, a connecting opening is formed in the upper end of the lengthened barrel, and a baffle is installed in the connecting opening. A baffle plate is installed on the left side of the partition plate, a conveying adjusting assembly is installed on the left side of the upper end of the air supply air opening assembly, a connecting pipe is installed in the conveying adjusting assembly, and an inlet is formed in the left side of the connecting pipe. And when the tuyere is used, enough wind speed and kinetic energy cannot be kept in the tuyere area, so that the problem that the coal gas flow cannot be reasonably distributed subsequently is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace tuyeres, and specifically relates to a blast furnace tuyere structure for stable distribution of coal gas flow. Background Technique

[0002] The blowing regime is a basic regime for blast furnace operation, which includes the size of the air volume, the diameter and length of the tuyere, the layout of the tuyeres, the temperature of the blast, the amount of injection, etc. Under certain conditions, the layout of the tuyeres is also very important, and it has a great impact on the smooth operation of the furnace condition. Production practice has proved that adjusting the size of the incoming air volume through the layout of the tuyeres is one of the means to adjust the blast furnace condition.

[0003] The existing Chinese utility model patent with the reference publication number: CN218465859U discloses a blast furnace tuyere structure, which includes a connecting sleeve, a tuyere large sleeve, a steel ring and an annular sealing cover; the connecting sleeve includes a first end located at the installation opening on the side wall of the blast furnace, and the outer edge of the second end forms an annular installation plate; the tuyere large sleeve penetrates through the connecting sleeve and extends into the blast furnace, and an annular extension plate is provided at one end of the tuyere large sleeve outside the blast furnace. The extension plate is located on the side of the installation plate away from the blast furnace and is in fitting connection with the installation plate. An installation ring groove is formed on the side of the extension plate away from the blast furnace; the steel ring includes a plurality of arc segments connected end to end in sequence, and the arc segments are respectively cast into the installation ring groove; the outer edge of the sealing cover is connected to the outer wall of the blast furnace, and the inner edge is welded and fixed to the side of the arc segment away from the blast furnace. The blast furnace tuyere structure provided by the utility model is composed of a plurality of arc segments. When the arc segments expand due to heat, they will not break away from the installation ring groove, improving the bonding strength between the steel ring and the tuyere large sleeve.

[0004] Based on the retrieval of the above patent and the combination with the equipment in the prior art, it is found that the tuyere parameters mainly include the length, angle, area, etc. of the tuyere. The length and slope of the tuyere depend on the actual needs of the blast furnace. During actual production, when dealing with the furnace condition or resuming blowing, there will be an operation of blocking the tuyere. Poor operation of blocking the tuyere is likely to cause heat loss in the furnace, and when using the tuyere, the tuyere area cannot maintain sufficient wind speed and kinetic energy, resulting in the subsequent inability to reasonably distribute the coal gas flow. The existence of these problems affects the use of the device. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a blast furnace tuyere structure for stable distribution of coal gas flow, which can effectively prevent heat loss in the furnace caused by poor operation of blocking the tuyere during actual production when dealing with the furnace condition or resuming blowing, and when using the tuyere, the tuyere area cannot maintain sufficient wind speed and kinetic energy, resulting in the subsequent inability to reasonably distribute the coal gas flow.

[0007] Technical solution

[0008] To achieve the above object, the present utility model provides the following technical solution: A blast furnace tuyere structure for stable distribution of coal gas flow, comprising: a blast component, an air supply tuyere component for ensuring sufficient blast kinetic energy and reasonable initial coal gas flow distribution in the subsequent process is installed at the upper end of the blast component, and a conveying and adjusting component for ensuring sufficient blast kinetic energy and reasonable initial coal gas flow distribution in the subsequent process is installed at the upper left side of the air supply tuyere component.

[0009] The upper end of the air supply tuyere component is connected with an extension tube, a partition plate is installed inside the extension tube, a connection port is installed at the upper end of the extension tube, a shielding plate is installed on the left side of the partition plate, and the shielding plate is installed at the side end of the small tuyere to seal the small tuyere, facilitating the subsequent wind force to be conveyed into the large tuyere.

[0010] A connecting pipe is installed inside the conveying and adjusting component, an inlet is installed on the left side of the connecting pipe, and an adjusting plate is installed at the upper end of the inlet. The adjusting plate is installed inside the outer cylinder, and the opening degree at the large tuyere is adjusted through the adjusting plate to facilitate the subsequent adjustment of the wind force conveying at the large tuyere.

[0011] As a preferred technical solution of the present utility model, a blower is installed at the upper end of the blast component, a conveying pipe is installed at the upper end of the blower, a conveying port is installed at the front end of the blower, and the conveying port is installed at the front end of the blower and is installed inside the outer cylinder to facilitate the subsequent conveyance of wind force into the large tuyere.

[0012] As a preferred technical solution of the present utility model, a wind cylinder is connected to the upper end of the air supply tuyere component, an air outlet is installed at the upper front end of the wind cylinder, and a connection plate is installed on the upper left side of the wind cylinder. The connection plate is installed at the upper end of the wind cylinder, and the wind cylinder is connected and installed with the extension tube through the connection plate.

[0013] As a preferred technical solution of the present utility model, an outer cylinder is installed at the upper end of the conveying and adjusting component, and the inner adjusting plate is connected and installed by the outer cylinder to facilitate the subsequent direct conveyance of wind force into the large tuyere.

[0014] As a preferred technical solution of the present utility model, the blast component is installed on the left side of the adjusting plate in the conveying and adjusting component, and the air supply tuyere component is installed on the right side of the outer cylinder in the conveying and adjusting component.

[0015] As a preferred technical solution of the present utility model, the conveying pipe is connected and installed inside the inlet, and the conveying port is installed at the side end of the outer cylinder.

[0016] As a preferred technical solution of the present utility model, the air duct is a detachable structure. The air duct is connected to the extension tube through an adapter plate. The internal shape of the spacer plate fits the air duct and the extension tube. The spacer plate and the baffle form a large air outlet and a small air outlet.

[0017] As a preferred technical solution of the present utility model, the outer cylinder is installed at the upper end of the extension tube. The connecting pipe is connected to the connection port. The adjusting plate blocks the large air outlet.

[0018] Compared with the prior art, the present utility model provides a blast furnace tuyere structure for stable distribution of coal gas flow, which has the following beneficial effects:

[0019] 1. Through the setting of the overall device in the present utility model, an air duct is installed in the device. The air duct is connected and installed to the extension tube through the adapter plate at the upper end. The overall structure is set as a long tube structure, which is convenient for subsequent air volume transportation. A spacer plate is installed inside the extension tube. The spacer plate forms a large air outlet and a small air outlet inside the air duct and the extension tube. By subsequently blocking the large air outlet, the air volume entering the furnace is reduced, the wind speed and the blast kinetic energy in front of the tuyere are increased, the central gas flow is quickly opened up, the tuyere recirculation zone is increased, and the wind force is transported through the small air outlet to reduce heat loss. This structure makes full use of the blast furnace air temperature, ensures sufficient blast kinetic energy and reasonable initial coal gas flow distribution, realizes the long-term stable operation of the blast furnace, and effectively prevents the operation of blocking tuyeres during the actual production of treating furnace conditions or during furnace repair and resumption of blowing. Poor tuyere blocking operations are likely to cause heat loss in the furnace, and when using the tuyere, the tuyere area cannot maintain sufficient wind speed and kinetic energy, resulting in the subsequent inability to reasonably distribute the coal gas flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 Schematic diagram of the blast component structure of the present utility model;

[0022] Figure 3 Schematic diagram of the tuyere component structure of the present utility model for air supply;

[0023] Figure 4 Schematic diagram of the conveying and adjusting component structure of the present utility model.

[0024] Wherein: 1. Blast component; 101. Blower; 102. Conveying pipe; 103. Conveying port; 2. Tuyere component for air supply; 201. Air duct; 202. Air outlet; 203. Adapter plate; 204. Extension tube; 205. Spacer plate; 206. Connection port; 207. Baffle; 3. Conveying and adjusting component; 301. Outer cylinder; 302. Connecting pipe; 303. Inlet; 304. Adjusting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following further describes in detail the embodiments of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0026] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Please refer to Figure 1 - Figure 4 , in this embodiment, a blast furnace tuyere structure for stable distribution of coal gas flow includes: a blast component 1, a tuyere component 2 is installed at the upper end of the blast component 1, an extension tube 204 is connected to the upper end of the tuyere component 2, a partition plate 205 is installed inside the extension tube 204, a connection port 206 is installed at the upper end of the extension tube 204, a shielding plate 207 is installed on the left side of the partition plate 205, a conveying and adjusting component 3 is installed on the upper left side of the tuyere component 2, a connecting pipe 302 is installed inside the conveying and adjusting component 3, an inlet 303 is installed on the left side of the connecting pipe 302, and an adjusting plate 304 is installed at the upper end of the inlet 303. The blast component 1 is installed on the left side of the adjusting plate 304 in the conveying and adjusting component 3, and the tuyere component 2 is installed on the right side of the outer cylinder 301 in the conveying and adjusting component 3.

[0029] With the above structure: The air blowing component 1 facilitates the installation and connection of the upper structure, facilitating the subsequent conveyance of wind power into the large air outlet and the small air outlet. The air supply air outlet component 2 changes the original air outlet, facilitating the subsequent guarantee of sufficient air blowing kinetic energy and reasonable initial coal gas flow distribution, achieving the long-term stable and smooth operation of the blast furnace. The conveying and regulating component 3 is used in combination with the air supply air outlet component 2, facilitating the subsequent change in the use of the large air outlet and the small air outlet and reasonably regulating the air supply speed of the air outlet.

[0030] Please refer to Figure 1 - Figure 4 At the upper end of the air blowing component 1, a blower 101 is installed, and at the upper end of the blower 101, a conveying pipe 102 is installed. At the front end of the blower 101, a conveying port 103 is installed. The conveying pipe 102 is connected and installed inside the inlet 303, and the conveying port 103 is installed at the side end of the outer cylinder 301.

[0031] With the above structure: By installing the blower 101, it is convenient to convey the wind power required inside the blast furnace. The conveying pipe 102 is installed on the upper and lower sides of the blower 101, and the connection between the conveying pipe 102 and the inlet 303 facilitates the subsequent conveyance of wind power into the small air outlet. The conveying port 103 is installed at the front end of the blower 101 and inside the outer cylinder 301, facilitating the subsequent conveyance of wind power into the large air outlet.

[0032] Please refer to Figure 1 - Figure 4 At the upper end of the air supply air outlet component 2, an air duct 201 is connected. At the upper front end of the air duct 201, an air outlet 202 is installed. At the upper left side of the air duct 201, an adapter plate 203 is installed. The air duct 201 is a detachable structure. The air duct 201 is connected to the extension tube 204 through the adapter plate 203. The internal shape of the spacer plate 205 fits the air duct 201 and the extension tube 204. The spacer plate 205 and the baffle plate 207 form the large air outlet and the small air outlet.

[0033] Through the above structure: By installing the air duct 201, the wind force is delivered to the interior of the blast furnace. The air outlet 202 is installed at the front end of the air duct 201, which facilitates the subsequent discharge of the wind force inside the large tuyere and the small tuyere. The connecting plate 203 is installed at the upper end of the air duct 201. The air duct 201 is connected and installed with the extension tube 204 through the connecting plate 203, which is convenient for the subsequent use of the overall device. The extension tube 204 is installed on the left side of the air duct 201. The internal partition plate 205 is connected through the reinforcing tube, which is convenient for the subsequent delivery of the wind force. The partition plate 205 is installed inside the extension tube 204 and the air duct 201, which is convenient for the subsequent partitioning of the interiors of the air duct 201 and the extension tube 204, and forms the structures of the large tuyere and the small tuyere inside. The connection ports 206 are installed at the upper and lower ends of the extension tube 204. The wind force is delivered to the interior of the small tuyere through the connection ports 206 for use. The baffle plate 207 is installed at the side end of the small tuyere to seal the small tuyere, which is convenient for the subsequent delivery of the wind force to the interior of the large tuyere.

[0034] Please refer to Figure 1 - Figure 4 At the upper end of the conveying and adjusting assembly 3, an outer cylinder 301 is installed. The outer cylinder 301 is installed at the upper end of the extension tube 204. The connecting pipe 302 is connected to the connection port 206, and the adjusting plate 304 blocks the large tuyere.

[0035] Through the above structure: By installing the outer cylinder 301, the internal adjusting plate 304 is connected and installed, which is convenient for the subsequent direct delivery of the wind force to the large tuyere. The connecting pipe 302 is installed inside the outer cylinder 301, and the connecting pipe 302 is connected to the connection port 206, which is convenient for the subsequent delivery of the wind force to the interior of the small tuyere. The inlet 303 is connected to the connecting pipe 302, and the inlet 303 is connected to the conveying pipe 102. The wind force is delivered to the interior of the inlet 303 through the conveying pipe 102. The adjusting plate 304 is installed inside the outer cylinder 301. The opening degree at the large tuyere is adjusted through the adjusting plate 304, which is convenient for the subsequent adjustment of the wind force delivery at the large tuyere.

[0036] In use, first of all, the overall device is installed at the upper end of the blast furnace. When delivering wind power, the blower 101 is connected to the upper end of the device. A delivery pipe 102 is installed at the upper end of the blower 101. The delivery pipe 102 is installed into the inlet 303 at the upper end of the outer cylinder 301. The delivery port 103 is installed at the front end of the blower 101. The delivery port 103 is installed inside the outer cylinder 301. The wind power is delivered through the delivery pipe 102 and the delivery port 103. The air duct 201 is installed at the upper end of the blast furnace. A connecting plate 203 is installed at the upper end of the air duct 201. The air duct 201 and the extension cylinder 204 are connected and installed through the connecting plate 203. A partition plate 205 is installed inside the extension cylinder 204. The partition plate 205 divides the inside of the extension cylinder 204 and the air duct 201 into a large tuyere and a small tuyere. A connection port 206 is installed at the upper end of the extension cylinder 204. The connection port 206 is connected to the connecting pipe 302. An inlet 303 is installed at the upper end of the connecting pipe 302. The wind power is delivered into the inlet 303 through the delivery pipe 102, facilitating the subsequent delivery of the wind power into the inside of the small tuyere. A delivery port of the outer cylinder 301 is installed on the left side of the extension cylinder 204. The delivery port 103 is installed inside the outer cylinder 301. The wind power is delivered into the inside of the large tuyere through the delivery port 103. When the user needs to perform a wind blocking operation, an adjusting plate 304 is installed inside the outer cylinder 301. The adjusting plate 304 blocks the outer end of the large tuyere. At this time, the outer airflow is delivered through the small tuyere, reducing the incoming air volume of the overall blast furnace, increasing the wind speed, the kinetic energy of the blast in front of the tuyere, quickly opening up the central airflow, increasing the tuyere recirculation zone. Moreover, when the wind power is delivered through the small tuyere, the heat loss inside the blast furnace is reduced. When the small tuyere delivers the wind power, the wind power is sent into the blast furnace through the air outlet 202 at the front end of the air duct 201.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blast furnace air supply tuyere structure for stable distribution of coal gas flow, characterized in that: The invention comprises an air blowing assembly (1), wherein an air supply vent assembly (2) is installed at the upper end of the air blowing assembly (1), wherein the upper end of the air supply vent assembly (2) is connected to an extension tube (204), wherein a partition plate (205) is installed inside the extension tube (204), wherein a connecting port (206) is installed at the upper end of the extension tube (204), wherein a shielding plate (207) is installed on the left side of the partition plate (205), wherein a conveying adjustment assembly (3) is installed at the left side of the upper end of the air supply vent assembly (2), wherein a connecting pipe (302) is installed inside the conveying adjustment assembly (3), wherein an inlet (303) is installed on the left side of the connecting pipe (302), and wherein an adjustment plate (304) is installed at the upper end of the inlet (303).

2. A blast furnace air supply tuyere structure for stable distribution of coal gas flow according to claim 1, characterized in that: A blower (101) is installed at the upper end of the air blowing assembly (1), a delivery pipe (102) is installed at the upper end of the blower (101), and a delivery port (103) is installed at the front end of the blower (101).

3. The blast furnace air supply tuyere structure for stable distribution of coal gas flow according to claim 1, characterized in that: The upper end of the air supply vent assembly (2) is connected to a wind tube (201), and an air outlet (202) is installed at the upper front end of the wind tube (201), and a connecting plate (203) is installed on the left side of the upper end of the wind tube (201).

4. The blast furnace air supply tuyere structure for stable distribution of coal gas flow according to claim 1, characterized in that: An outer cylinder (301) is installed at the upper end of the delivery adjustment component (3).

5. The blast furnace air supply tuyere structure for stable distribution of coal gas flow according to claim 1, characterized in that: The air blowing assembly (1) is installed on the left side of the regulating plate (304) in the conveying regulating assembly (3), and the air supply tuyere assembly (2) is installed on the right side of the outer cylinder (301) in the conveying regulating assembly (3).

6. The blast furnace air supply tuyere structure for stable distribution of coal gas flow according to claim 2, characterized in that: The delivery pipe (102) is connected and installed inside the inlet (303), and the delivery port (103) is installed at the side end of the outer cylinder (301).

7. The blast furnace air supply tuyere structure for stable distribution of coal gas flow according to claim 3, characterized in that: The wind tube (201) is a disassembly structure. The wind tube (201) is connected to the extension tube (204) via a connecting plate (203). The internal shape of the partition plate (205) fits the wind tube (201) and the extension tube (204). The partition plate (205) and the shielding plate (207) form a large air outlet and a small air outlet.

8. The blast furnace air supply tuyere structure for stable distribution of coal gas flow according to claim 4, characterized in that: The outer cylinder (301) is installed at the upper end of the extension cylinder (204), the connecting pipe (302) is connected to the connecting port (206), and the regulating plate (304) blocks the large air outlet.

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