Adjustable transition joint device for coal injection lance, coal injection lance and coal injection device

Abstract

The present disclosure relates to the technical field of metallurgy, and particularly relates to a coal injection gun adjustable conversion joint device, a coal injection gun and a coal injection device. The present disclosure provides a coal injection gun adjustable conversion joint device, which comprises a conversion joint body and an angle adjusting mechanism. The conversion joint body has a first connecting end and a second connecting end. The first connecting end is used for connecting a coal injection gun section door of a coal injection gun. The second connecting end is used for connecting a barrel of the coal injection gun. The angle adjusting mechanism comprises an adjusting sleeve and a plurality of force applying columns. The plurality of force applying columns are arranged at intervals along the circumference of the conversion joint body. The adjusting sleeve is detachably connected to one or more of the plurality of force applying columns, and the adjusting sleeve is used for increasing the torsion of the force applying columns. By implementing the technical solution of the present disclosure, burrs, scratches and folds of the barrel during angle adjustment are avoided, which is beneficial to the sealing and advancing and retreating operation of the coal injection gun.

Description

Technical Field

[0001] This disclosure relates to the field of metallurgical technology, and in particular to an adjustable conversion joint device for a pulverized coal injection gun, a pulverized coal injection gun, and a pulverized coal injection device. Background Technology

[0002] Pulverized coal injection in blast furnaces is a key measure in modern ironmaking technology. It plays an important role in the sustainable development of blast furnace ironmaking by reducing costs, improving operating conditions, reducing environmental pollution, and increasing economic benefits.

[0003] The pulverized coal injection lance is inserted into the direct-fire pipe, with its center forming an angle with the center of the tuyeres, typically between 12° and 14°. Strict requirements are placed on the insertion depth, position, and angle of the lance. Inappropriate insertion depth, position, and angle not only affect pulverized coal combustion but also easily cause wear on the tuyeres from the injected coal stream. This necessitates the operator observing the coal stream position of the lance and adjusting it as needed. Adjustment involves using pipe wrenches to hold the lance's tail end and rotating it to adjust the coal stream to the appropriate position.

[0004] Because the barrel is held in place by pipe wrenches, repeated adjustments cause stress that results in burrs, scratches, and creases on the barrel. If the coal injection gun is not long enough, the entire barrel needs to be pushed into the gun holder, leading to further burrs, scratches, and creases, which hinders sealing and operation, making adjustments difficult. Adjusting the insertion depth requires multiple people to push it in, as there is no handhold, making insertion difficult. Utility Model Content

[0005] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, in a first aspect of this disclosure, an adjustable conversion connector device for a pulverized coal injection gun is provided, characterized in that it includes a conversion connector body and an angle adjustment mechanism, wherein the conversion connector body has a first connecting end and a second connecting end, the first connecting end being used to connect to the pulverized coal injection gun gate, and the second connecting end being used to connect to the barrel of the pulverized coal injection gun, wherein...

[0007] The angle adjustment device includes an adjustment sleeve and a plurality of force-applying columns, which are spaced apart circumferentially along the adapter body. The adjustment sleeve is detachably connected to one or more of the plurality of force-applying columns, and the adjustment sleeve is used to increase the torque of the force-applying columns.

[0008] In one feasible implementation, the adapter body is provided with a plurality of force-applying column mounting positions along the circumferential direction, and the force-applying columns are detachably connected to the force-applying column mounting positions.

[0009] In one feasible implementation, a manually adjustable surface is provided on the force-applying column, the manually adjustable surface extending beyond the range of the force-applying column, and the manually adjustable surface facing the extension direction of the barrel.

[0010] In one feasible implementation, the adjusting sleeve is threadedly connected to the force-applying column.

[0011] In one feasible embodiment, the adjusting sleeve includes a main rod body and two connecting joints, the two connecting joints being connected to the main rod body, and the two connecting joints being used to connect to two adjacent force-applying columns respectively.

[0012] In one feasible implementation, the number of force-applying columns is set to four, with adjacent force-applying columns forming a 90-degree angle.

[0013] In one feasible implementation, the force-applying column is made of steel, and the diameter of the force-applying column is set to 16 mm to 19 mm.

[0014] In one possible implementation, the inner diameter of the adjusting sleeve is set to 19 mm to 21 mm, and the length is set to 330 mm to 370 mm.

[0015] A second aspect of this disclosure provides a pulverized coal injection gun, including the aforementioned adjustable conversion adapter for the pulverized coal injection gun.

[0016] A third aspect of this disclosure provides a pulverized coal injection device, including the aforementioned pulverized coal injection nozzle.

[0017] Compared with the prior art, this disclosure has at least the following beneficial effects: The adapter body of this disclosure has a first connecting end and a second connecting end. The first connecting end is used to connect the coal injection gun gate of the coal injection gun, and the second connecting end is used to connect the gun barrel of the coal injection gun as a connecting component of the coal injection gun as a whole. Multiple force-applying columns are arranged circumferentially along the adapter body. By turning the force-applying columns, the adapter is rotated, thereby driving the gun barrel to rotate. In use, it can avoid directly turning the gun barrel with pipe wrenches, avoiding burrs, scratches, and creases on the gun barrel, thus improving the sealing effect of the coal injection gun and making the gun advance and retreat operation smoother. By using an adjusting sleeve detachably connected to one or more of the multiple force-applying columns, the torque of the force-applying columns can be increased, making it more labor-saving when adjusting the gun barrel angle. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0021] Figure 1 This is a schematic diagram of an adjustable conversion joint device for a coal injection gun provided in this disclosure.

[0022] Figure 2 This is one of the structural schematic diagrams of the conversion joint body and the force-applying column disclosed in this publication;

[0023] Figure 3 This is the second schematic diagram of the structure of the conversion joint body and the force-applying column disclosed in this publication;

[0024] Figure 4 This is one of the schematic diagrams of the force-applying column structure installed at the force-applying column mounting position as disclosed herein;

[0025] Figure 5 This is the second schematic diagram of the structure of the force-applying column in the force-applying column installation position disclosed herein.

[0026] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1-gun barrel; 2-converter body; 3-force application column; 4-adjusting sleeve; 5-coal injection gun stop valve; 6-manual adjustment surface; 8-coal injection gun fixing clip; 9-blast furnace air supply pipe; 10-clip top screw. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0028] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0029] Currently, pulverized coal injection in blast furnaces is a key measure in modern ironmaking technology. It plays a significant role in the sustainable development of blast furnace ironmaking by reducing costs, improving operating conditions, minimizing environmental pollution, and increasing economic efficiency. The pulverized coal injection lance is inserted through the direct-fired pipe, with its center forming an angle with the tuyeres, typically 12°–14°. Strict requirements are placed on the insertion depth, position, and angle of the lance. Inappropriate insertion depth, position, and angle not only affect pulverized coal combustion but also easily cause wear on the tuyeres. This necessitates operators observing the coal stream position of the lance and adjusting it accordingly. Adjusting the lance involves using pipe wrenches to hold the lance barrel at the rear and rotating it to adjust the coal stream to the appropriate position. However, repeatedly adjusting the lance while holding it with pipe wrenches can cause stress on the barrel, resulting in burrs, scratches, and wrinkles. If the coal injection gun is not long enough and the entire barrel needs to be pushed into the gun holder, burrs, scratches, and wrinkles will appear on the barrel, which is detrimental to the sealing of the coal injection gun and the operation of advancing and retracting the gun, making it difficult to adjust the coal injection gun. When it is necessary to adjust the insertion depth of the coal injection gun, multiple people are required to push it in, as there is no handhold for the coal injection gun, making it difficult to push in.

[0030] Based on this, the present disclosure provides an adjustable conversion adapter for a coal injection gun. The conversion adapter body has a first connecting end and a second connecting end. The first connecting end is used to connect to the coal injection gun gate of the coal injection gun, and the second connecting end is used to connect to the gun barrel of the coal injection gun as a connecting component of the coal injection gun as a whole. Multiple force-applying columns are arranged circumferentially along the conversion adapter body. By turning the force-applying columns, the conversion adapter rotates, thereby driving the gun barrel to rotate. In use, it can avoid directly turning the gun barrel with pipe wrenches, avoiding burrs, scratches, and creases on the gun barrel, thus improving the sealing effect of the coal injection gun and making the gun advance and retreat operation smoother. By using an adjusting sleeve detachably connected to one or more of the multiple force-applying columns, the torque of the force-applying columns can be increased, making it more labor-saving when adjusting the gun barrel angle.

[0031] The adjustable conversion joint device for the pulverized coal injection gun will be described in detail below through specific embodiments:

[0032] Reference Figures 1 to 5 As shown, a first aspect of this disclosure provides an adjustable conversion adapter for a coal injection gun, including a conversion adapter body 2 and an angle adjustment mechanism. The conversion adapter body 2 has a first connecting end and a second connecting end. The first connecting end is used to connect to the coal injection gun gate 5 of the coal injection gun, and the second connecting end is used to connect to the gun barrel 1 of the coal injection gun. The angle adjustment mechanism includes an adjusting sleeve 4 and a plurality of force-applying columns 3, which are spaced apart circumferentially along the conversion adapter body. The adjusting sleeve 4 is detachably connected to one or more of the plurality of force-applying columns 3, and the adjusting sleeve 4 is used to increase the torque of the force-applying columns 3.

[0033] The adapter body disclosed herein has a first connecting end and a second connecting end. The first connecting end is used to connect to the coal injection gun gate of the coal injection gun, and the second connecting end is used to connect to the gun barrel of the coal injection gun as a connecting component of the coal injection gun as a whole. Multiple force-applying columns are arranged circumferentially along the adapter body. By turning the force-applying columns, the adapter is rotated, thereby driving the gun barrel to rotate. In use, it can avoid directly turning the gun barrel with pipe wrenches, avoiding burrs, scratches, and creases on the gun barrel, thus improving the sealing effect of the coal injection gun and making the gun advance and retreat operation smoother. By using an adjusting sleeve detachably connected to one or more of the multiple force-applying columns, the torque of the force-applying columns can be increased, making it more labor-saving when adjusting the gun barrel angle.

[0034] Specifically, the adjusting sleeve 4 is detachably connected to one or more of the multiple force-applying columns 3. The adjusting sleeve 4 can be directly fitted onto any one of the multiple force-applying columns 3, or the adjusting sleeve 4 can be fitted onto multiple force-applying columns 3. For example, the adjusting sleeve 4 can be fitted onto two force-applying columns 3 respectively. By applying force with both hands at the same time, the conversion connector body 2 is rotated to adjust the position and angle of the gun barrel.

[0035] In some embodiments, the adapter body 2 is provided with a plurality of force-applying column mounting positions along the circumferential direction, and the force-applying column 3 is detachably connected to the force-applying column mounting positions.

[0036] In this embodiment, the adapter body 2 of this disclosure is provided with multiple force-applying column mounting positions along the circumferential direction, and the force-applying column 3 is detachably connected to the force-applying column mounting positions. For example, the force-applying column mounting position is set as a bolt hole, one end of the force-applying column is provided with a threaded post, and the force-applying column mounting position and the force-applying column 3 are threadedly connected. The arrangement of this embodiment can eliminate the need to install the force-applying column 3 in some usage scenarios with limited space, and set the force-applying column 3 in a position where it can be installed when adjustment is required, making this disclosure more adaptable to usage scenarios. Specifically, as shown... Figure 4 and 5 As shown, the number of force-applying column mounting positions is set to 4. When force-applying columns 3 are installed on two adjacent force-applying column mounting positions, the two force-applying columns 3 form a 90-degree angle to facilitate simultaneous operation with both hands.

[0037] In some embodiments, a manual adjustment surface 6 is provided on the force-applying column 3, the manual adjustment surface 6 extends out of the range of the force-applying column 3, and the manual adjustment surface 6 faces the extension direction of the barrel 1.

[0038] In this embodiment, the force-applying column 3 facilitates better gun-moving operations. However, the structure of the force-applying column 3 makes pushing and pulling operations inconvenient during gun-moving. Therefore, this disclosure provides a manual adjustment surface 6 on the force-applying column 3. The manual adjustment surface 6 extends beyond the range of the force-applying column 3 and faces the extension direction of the barrel 1. For example, the manual adjustment surface 6 can be configured as a rectangular plate structure to increase the operating area of ​​the hand. Furthermore, the manual adjustment surface 6 can be configured as an arc-shaped surface to facilitate easier force application during hand operation, and the edges of the manual adjustment surface 6 can be configured as rounded edges to prevent right-angled edges from scratching the operator during operation.

[0039] In some embodiments, the adjusting sleeve 4 is threadedly connected to the force-applying column 3.

[0040] In this embodiment, the adjusting sleeve 4 is threadedly connected to the force-applying column 3, which improves the fixing effect of the two during use and prevents the adjusting sleeve 4 from coming off the force-applying column 3 when force is applied.

[0041] In some embodiments, the adjusting sleeve 4 includes a main rod and two connecting joints, the two connecting joints being connected to the main rod and used to connect to two adjacent force-applying columns 3 respectively.

[0042] In this embodiment, the adjusting sleeve 4 of this disclosure includes a main rod and two connecting joints. The two connecting joints are connected to the main rod and are used to connect to two adjacent force-applying columns 3 respectively. Specifically, the adjusting sleeve 4 can be configured as a Y-shaped structure to allow force to be applied to two force-applying columns simultaneously through one main rod. The two connecting joints used to connect to two adjacent force-applying columns 3 need to be adaptively configured according to the spacing between the two force-applying columns 3 on the conversion joint body 2.

[0043] In some embodiments, the number of force-applying columns 3 is set to four, and two adjacent force-applying columns 3 form a 90-degree angle.

[0044] In this embodiment, four force-applying columns 3 are used, with adjacent force-applying columns 3 forming a 90-degree angle. That is, the force-applying columns 3 are welded to the adapter body 2 at four positions with a 90-degree angle, so that the adjustment angle of the barrel 3 is clearly defined when adjusting the angle of the force-applying columns 3. In other words, the four force-applying columns 3 serve as the reference for adjusting the angle. Furthermore, an angle adjustment indicator can be set between each force-applying column 3 to display the angle value of the rotation angle of the adapter body 2.

[0045] In some embodiments, the force-applying column 3 is made of steel, and its diameter is set to 16 mm to 19 mm. This disclosure specifically selects 18 mm, which minimizes the footprint of the force-applying column 3 while still meeting strength requirements.

[0046] In some embodiments, the inner diameter of the adjusting sleeve 4 is set to 19 mm to 21 mm, and the length is set to 330 mm to 370 mm. Specifically, the adjusting sleeve 4 is made of steel pipe with an inner diameter of 20 mm and a length of 350 mm to meet the strength requirements of the mechanism, and this parameter has high adaptability to the space of the adjusting sleeve 4.

[0047] A second aspect of this disclosure provides a pulverized coal injection gun, including the adjustable conversion adapter device for the pulverized coal injection gun provided in the first aspect of this disclosure. Figure 1 As shown, the coal injection gun is also equipped with 8 coal injection gun fixing clips 9 and clip set screws 10. When rotating the gun barrel 1, the fixing of the gun barrel 1 by the clip set screws 10 is released. After the angle adjustment is completed, it is fixed again.

[0048] A third aspect of this disclosure provides a pulverized coal injection apparatus, including the pulverized coal injection nozzle provided in the second aspect of this disclosure.

[0049] In this disclosure, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0050] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0051] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. An adjustable conversion joint device for a coal injection gun, characterized in that, The system includes a converter body and an angle adjustment mechanism. The converter body has a first connecting end and a second connecting end. The first connecting end is used to connect to the coal injection gun gate of the coal injection gun, and the second connecting end is used to connect to the barrel of the coal injection gun. The angle adjustment device includes an adjustment sleeve and a plurality of force-applying columns, which are spaced apart circumferentially along the adapter body. The adjustment sleeve is detachably connected to one or more of the plurality of force-applying columns, and the adjustment sleeve is used to increase the torque of the force-applying columns.

2. The adjustable conversion joint device for the pulverized coal injection gun according to claim 1, characterized in that, The adapter body is provided with multiple force-applying column mounting positions along the circumference, and the force-applying columns are detachably connected to the force-applying column mounting positions.

3. The adjustable conversion joint device for the pulverized coal injection gun according to claim 1, characterized in that, The force-applying column is provided with a manually adjustable surface, which extends beyond the range of the force-applying column and faces the extension direction of the barrel.

4. The adjustable conversion joint device for the pulverized coal injection gun according to claim 1, characterized in that, The adjusting sleeve is threadedly connected to the force-applying column.

5. The adjustable conversion joint device for the pulverized coal injection gun according to claim 1, characterized in that, The adjusting sleeve includes a main rod and two connecting joints. The two connecting joints are connected to the main rod, and the two connecting joints are used to connect to two adjacent force-applying columns respectively.

6. The adjustable conversion joint device for pulverized coal injection gun according to claim 1, characterized in that, The number of force-applying columns is set to four, and two adjacent force-applying columns form a 90-degree angle.

7. The adjustable conversion joint device for the pulverized coal injection gun according to claim 1, characterized in that, The force-applying column is made of steel, and its diameter is set to 16 mm to 19 mm.

8. The adjustable conversion joint device for the pulverized coal injection gun according to claim 1, characterized in that, The inner diameter of the adjusting sleeve is set to 19 mm to 21 mm, and the length is set to 330 mm to 370 mm.

9. A coal injection gun, characterized in that, The adjustable conversion joint device for the pulverized coal injection gun includes any one of claims 1 to 8.

10. A pulverized coal injection device, characterized in that, Includes the coal injection gun as described in claim 9.

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