Sealing structure of plasma torch assembly and tuyere small sleeve

Abstract

The utility model relates to a sealing structure of a plasma torch assembly and a tuyere small sleeve, which belongs to the technical field of tuyere small sleeve installation and comprises the plasma torch assembly and the tuyere small sleeve, and a sealing assembly is arranged between the plasma torch assembly and the tuyere small sleeve. The sealing assembly comprises a fixing disc and a sealing ring, the fixing disc is fixedly connected to the outer wall of the plasma torch assembly, a connecting piece is fixedly connected to the inner side of the tuyere small sleeve, the sealing ring is located between the connecting piece and the fixing disc, and an installation assembly is arranged between the connecting piece and the plasma torch assembly. The sealing structure of the plasma torch assembly and the tuyere small sleeve is convenient to disassemble and overhaul, good in sealing performance and high in practicability, and solves the problems that an existing sealing structure of the plasma torch assembly and the tuyere small sleeve is fixed through bolts in the installation process, the installation steps are tedious, time and labor are wasted, follow-up disassembly, overhaul and maintenance are not convenient, and the service life is long. And the use is relatively inconvenient.

Description

Technical Field

[0001] The utility model relates to the technical field of tuyere small sleeve installation, in particular to a sealing structure of a plasma torch component and a tuyere small sleeve. Background Art

[0002] At present, the energy required for reduction and heating of ironmaking in blast furnaces mainly relies on carbon. The current reasonable reducing agent for blast furnace technology still cannot do without carbon, but the energy required for heating can be replaced by clean energy such as green electricity or green hydrogen. Plasma heating of metallurgical reduction gas is a way to replace carbon heating with electric heating to reduce the carbon consumption required for heating. The blast furnace uses a plasma heating gas system, which connects and fixes a megawatt-level plasma torch to the blast furnace tuyere, heats the decarbonized gas from the blast furnace top with a plasma torch and blows it into the blast furnace, reducing the amount of carbon used in ironmaking. The blast furnace plasma heating gas requires that the plasma torch be connected to the seal to ensure sealing, and the heated gas will not leak out.

[0003] The prior art has a publication number of CN218778966U that discloses a sealing structure of a plasma torch assembly and a tuyere sleeve, comprising a plasma torch assembly and a tuyere sleeve, wherein an end face of one end of the plasma torch assembly cooperates with an end face of one end of the tuyere sleeve, an end face of the plasma torch assembly and / or an end face of the tuyere sleeve is provided with an air sealing groove, the air sealing groove is annular, an air supply hole is provided on the plasma torch assembly or the tuyere sleeve, the air supply hole cooperates with the air sealing groove, and the air supply hole and the air sealing groove are filled with gas for air sealing.

[0004] However, the sealing structure is fixed by bolts during installation, and the installation steps are complicated, time-consuming and labor-intensive, and inconvenient for subsequent disassembly, inspection and maintenance. Therefore, a sealing structure of a plasma torch assembly and an air inlet sleeve is proposed to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a sealing structure for a plasma torch assembly and a tuyere sleeve, which has the advantages of easy installation, etc., and solves the problem that the sealing structure of the existing plasma torch assembly and the tuyere sleeve is fixed by bolts during installation, the installation steps are cumbersome, time-consuming and labor-intensive, and it is not convenient for subsequent disassembly, inspection and maintenance, and is inconvenient to use.

[0006] To achieve the above object, the utility model provides the following technical solutions: a sealing structure of a plasma torch assembly and a tuyere sleeve, comprising a plasma torch assembly and a tuyere sleeve, wherein a sealing assembly is arranged between the plasma torch assembly and the tuyere sleeve;

[0007] The sealing assembly includes a fixed disk and a sealing ring, the fixed disk is fixedly connected to the outer wall of the plasma torch assembly, the inner side of the tuyere sleeve is fixedly connected with a connecting piece, the sealing ring is located between the connecting piece and the fixed disk, and a mounting assembly is arranged between the connecting piece and the plasma torch assembly;

[0008] The installation assembly includes a positioning rod and a fixed block, one end of the positioning rod is fixedly connected to the connecting plate, the other end of the positioning rod passes through the inner side of the fixed block, the fixed block is fixedly connected to the outer side of the plasma torch assembly, a first spring is arranged between the fixed block and the air outlet sleeve, a limiting rod is arranged inside the fixed block, one end of the limiting rod is inserted into the inner side of the positioning rod, and an adjustment assembly is arranged on the outer side of the limiting rod.

[0009] Furthermore, the sealing ring is made of a high temperature resistant mica plate, the inner wall of the sealing ring is matched with the outer wall of the plasma torch assembly, and the outer wall of the sealing ring is matched with the inner wall of the tuyere sleeve.

[0010] Furthermore, one side of the sealing ring is in close contact with the fixing plate, and the other side of the sealing ring is in close contact with the connecting sheet.

[0011] Furthermore, the inner sides of the sealing ring, the fixing plate and the fixing block are all provided with through holes adapted to the positioning rod.

[0012] Furthermore, a support block is fixedly connected to the outer wall of the air outlet sleeve, one end of the first spring is fixedly connected to the fixed block, the other end of the first spring is tightly abutted against the support block, and a telescopic rod is arranged on the inner side of the first spring.

[0013] Furthermore, a groove matched with the limiting rod is formed on the inner side of the positioning rod, and the adjustment assembly includes a support rod, a sleeve, a second spring and an adjustment block.

[0014] Furthermore, one end of the limiting rod away from the positioning rod is fixedly connected to one end of the support rod, and the end of the support rod away from the limiting rod extends to the inner side of the sleeve, the sleeve is fixedly connected to the inside of the fixed block, and the second spring is located inside the sleeve.

[0015] Furthermore, the adjustment block is fixedly connected to the outer wall of the limiting rod, and one end of the adjustment block away from the limiting rod extends to the outside of the fixed block. A slider is fixedly connected to the side of the limiting rod away from the adjustment block, and a sliding groove is provided inside the fixed block, and the slider is slidably connected to the inner side of the sliding groove.

[0016] Compared with the prior art, the utility model provides a sealing structure of a plasma torch assembly and a tuyere sleeve, which has the following beneficial effects:

[0017] The sealing structure of the plasma torch assembly and the air outlet sleeve realizes rapid assembly and fixation of the plasma torch assembly and the air outlet sleeve through the cooperation of the limit rod and the positioning rod. When the limit rod and the positioning rod keep cooperating, the elastic contraction of the first spring makes them keep cooperating stably. At the same time, the fixing plate, the sealing ring and the connecting piece keep stable and tight contact with each other, and the sealing performance is good. When maintenance is needed, the limit rod is driven to move by pushing the adjustment block to separate the limit rod from the positioning rod, so that the plasma torch assembly and the air outlet sleeve can be quickly separated, which is convenient for disassembly and maintenance. At the same time, the sealing performance is good and the practicability is strong. The problem that the sealing structure of the existing plasma torch assembly and the air outlet sleeve is fixed by bolts during installation, the installation steps are relatively cumbersome, time-consuming and labor-intensive, and it is not convenient for subsequent disassembly, maintenance and maintenance, and it is relatively inconvenient to use is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of the installation assembly of the utility model;

[0020] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure shown;

[0021] Figure 4 It is a schematic diagram of the structural combination of the sealing ring and the positioning rod of the utility model.

[0022] In the figure: 1. plasma torch assembly; 2. air inlet sleeve; 3. fixing plate; 4. connecting plate; 5. sealing ring; 6. positioning rod; 7. fixing block; 8. supporting block; 9. first spring; 10. telescopic rod; 11. limiting rod; 12. supporting rod; 13. sleeve; 14. second spring; 15. adjusting block; 16. sliding block; 17. slide groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1:

[0025] See also Figure 1-4 The sealing structure of the plasma torch assembly and the tuyere sleeve in this embodiment includes a plasma torch assembly 1 and a tuyere sleeve 2.

[0026] In this embodiment, a sealing assembly is arranged between the plasma torch assembly 1 and the tuyere sleeve 2, and the sealing assembly includes a fixed disk 3 and a sealing ring 5. The fixed disk 3 is fixedly connected to the outer wall of the plasma torch assembly 1, and a connecting plate 4 is fixedly connected to the inner side of the tuyere sleeve 2. The sealing ring 5 is located between the connecting plate 4 and the fixed disk 3.

[0027] It should be noted that the sealing ring 5 is made of high-temperature resistant mica board, the inner wall of the sealing ring 5 is adapted to the outer wall of the plasma torch assembly 1, the outer wall of the sealing ring 5 is adapted to the inner wall of the air outlet sleeve 2, one side of the sealing ring 5 is tightly abutted against the fixed plate 3, and the other side of the sealing ring 5 is tightly abutted against the connecting plate 4.

[0028] In this embodiment, an installation component is arranged between the connecting plate 4 and the plasma torch assembly 1, and the installation component includes a positioning rod 6 and a fixing block 7. One end of the positioning rod 6 is fixedly connected to the connecting plate 4, and the other end of the positioning rod 6 passes through the inner side of the fixing block 7. The fixing block 7 is fixedly connected to the outer side of the plasma torch assembly 1. A limiting rod 11 is arranged inside the fixing block 7, and one end of the limiting rod 11 is inserted into the inner side of the positioning rod 6. The inner side of the positioning rod 6 is provided with a groove adapted to the limiting rod 11.

[0029] It should be noted that the inner sides of the sealing ring 5 , the fixing plate 3 and the fixing block 7 are all provided with through holes adapted to the positioning rod 6 .

[0030] In this embodiment, a first spring 9 is arranged between the fixed block 7 and the air outlet sleeve 2, a support block 8 is fixedly connected to the outer wall of the air outlet sleeve 2, one end of the first spring 9 is fixedly connected to the fixed block 7, the other end of the first spring 9 is tightly abutted against the support block 8, and a telescopic rod 10 is arranged on the inner side of the first spring 9.

[0031] Embodiment 2:

[0032] See also Figure 1-3 On the basis of the first embodiment, an adjustment component is provided on the outer side of the limit rod 11, and the adjustment component includes a support rod 12, a sleeve 13, a second spring 14 and an adjustment block 15, wherein one end of the limit rod 11 away from the positioning rod 6 is fixedly connected to one end of the support rod 12, one end of the support rod 12 away from the limit rod 11 extends to the inner side of the sleeve 13, the sleeve 13 is fixedly connected to the inside of the fixed block 7, the second spring 14 is located inside the sleeve 13, one end of the second spring 14 is fixedly connected to the inner wall of the sleeve 13, and the other end of the second spring 14 is fixedly connected to the support rod 12.

[0033] It should be noted that the adjustment block 15 is fixedly connected to the outer wall of the limit rod 11, and one end of the adjustment block 15 away from the limit rod 11 extends to the outside of the fixed block 7. A slider 16 is fixedly connected to the side of the limit rod 11 away from the adjustment block 15. A slide groove 17 is opened inside the fixed block 7, and the slider 16 is slidably connected to the inner side of the slide groove 17.

[0034] The working principle of the above embodiment is:

[0035] When the utility model is in use, the plasma torch assembly 1 and the air outlet small sleeve 2 are quickly assembled and fixed by the cooperation of the limit rod 11 and the positioning rod 6. When the limit rod 11 and the positioning rod 6 keep matching, the elastic contraction of the first spring 9 makes them keep matching stably. At the same time, the fixed plate 3, the sealing ring 5 and the connecting piece 4 are kept in stable and tight contact with each other, and the sealing is good. When maintenance is needed, the limit rod 11 is driven to move by pushing the adjustment block 15 to separate the limit rod 11 from the positioning rod 6, so that the plasma torch assembly 1 and the air outlet small sleeve 2 can be quickly separated for easy disassembly and maintenance.

[0036] The installation method, connection method or setting method disclosed in this embodiment are all common mechanical methods, and can be implemented as long as they can achieve their beneficial effects. It should be noted that in this article, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing structure of a plasma torch assembly and a tuyere sleeve, comprising a plasma torch assembly (1) and a tuyere sleeve (2), characterized in that: A sealing component is provided between the plasma torch component (1) and the tuyere sleeve (2); The sealing assembly comprises a fixed disk (3) and a sealing ring (5), wherein the fixed disk (3) is fixedly connected to the outer wall of the plasma torch assembly (1), a connecting piece (4) is fixedly connected to the inner side of the tuyere sleeve (2), the sealing ring (5) is located between the connecting piece (4) and the fixed disk (3), and a mounting assembly is provided between the connecting piece (4) and the plasma torch assembly (1); The mounting assembly comprises a positioning rod (6) and a fixing block (7), one end of the positioning rod (6) is fixedly connected to the connecting plate (4), the other end of the positioning rod (6) passes through the inner side of the fixing block (7), the fixing block (7) is fixedly connected to the outer side of the plasma torch assembly (1), a first spring (9) is arranged between the fixing block (7) and the air outlet sleeve (2), a limiting rod (11) is arranged inside the fixing block (7), one end of the limiting rod (11) is inserted into the inner side of the positioning rod (6), and an adjustment assembly is arranged on the outer side of the limiting rod (11).

2. The sealing structure of the plasma torch assembly and the tuyere sleeve according to claim 1 is characterized in that: The sealing ring (5) is made of a high temperature resistant mica plate, the inner wall of the sealing ring (5) is matched with the outer wall of the plasma torch assembly (1), and the outer wall of the sealing ring (5) is matched with the inner wall of the tuyere sleeve (2).

3. The sealing structure of the plasma torch assembly and the tuyere sleeve according to claim 1, characterized in that: One side of the sealing ring (5) is in close contact with the fixed disk (3), and the other side of the sealing ring (5) is in close contact with the connecting plate (4).

4. The sealing structure of the plasma torch assembly and the tuyere sleeve according to claim 1, characterized in that: The inner sides of the sealing ring (5), the fixing plate (3) and the fixing block (7) are all provided with through holes adapted to the positioning rod (6).

5. The sealing structure of the plasma torch assembly and the tuyere sleeve according to claim 1, characterized in that: A support block (8) is fixedly connected to the outer wall of the air outlet sleeve (2); one end of the first spring (9) is fixedly connected to the fixed block (7); the other end of the first spring (9) is tightly abutted against the support block (8); and a telescopic rod (10) is arranged on the inner side of the first spring (9).

6. The sealing structure of the plasma torch assembly and the tuyere sleeve according to claim 1, characterized in that: A groove matching the limiting rod (11) is formed on the inner side of the positioning rod (6), and the adjustment component comprises a support rod (12), a sleeve (13), a second spring (14) and an adjustment block (15).

7. The sealing structure of the plasma torch assembly and the tuyere sleeve according to claim 6, characterized in that: One end of the limiting rod (11) away from the positioning rod (6) is fixedly connected to one end of the supporting rod (12), and one end of the supporting rod (12) away from the limiting rod (11) extends to the inner side of the sleeve (13). The sleeve (13) is fixedly connected to the inside of the fixing block (7), and the second spring (14) is located inside the sleeve (13).

8. The sealing structure of the plasma torch assembly and the tuyere sleeve according to claim 6, characterized in that: The adjusting block (15) is fixedly connected to the outer wall of the limiting rod (11); one end of the adjusting block (15) away from the limiting rod (11) extends to the outside of the fixed block (7); a side of the limiting rod (11) away from the adjusting block (15) is fixedly connected to a sliding block (16); a sliding groove (17) is provided inside the fixed block (7); and the sliding block (16) is slidably connected to the inner side of the sliding groove (17).

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