Blast furnace tuyere sleeve sealing surface

Abstract

The utility model relates to the technical field of blast-furnace tuyere sleeve sealing, and discloses a blast-furnace tuyere sleeve sealing surface which comprises a large tuyere sleeve and a small tuyere sleeve installed in the large tuyere sleeve in a sliding mode, a sealing assembly is connected to the periphery of the small tuyere sleeve in a sleeved mode, and the small tuyere sleeve is inserted into the large tuyere sleeve in a penetrating mode and slides out from the end, with the smaller inner diameter, of the large tuyere sleeve. The first inflatable sealing ring and the second inflatable sealing ring are made to be gradually attached, at the moment, the first inflatable sealing ring and the second inflatable sealing ring can be inflated, air in the first inflatable sealing ring and the second inflatable sealing ring is gradually increased, the first inflatable sealing ring and the second inflatable sealing ring are expanded, a gap at the contact position is filled, and the first inflatable sealing ring and the second inflatable sealing ring which can be inflated and expanded have certain deformation capacity. According to the blast-furnace tuyere sleeve sealing face, the gap at the joint can be better attached, the gap at the joint of the tuyere sleeve is filled with the first inflatable sealing ring and the second inflatable sealing ring which can be inflated and expanded, the air tightness effect is better, and the blast-furnace tuyere sleeve sealing face is suitable for sealing tuyere sleeves with different pipe diameters.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace tuyere sleeve sealing, in particular to a blast furnace tuyere sleeve sealing surface. Background Art

[0002] Blast furnaces are used to smelt molten iron. They utilize coke, iron-bearing ore (natural lump ore, sintered ore, and pelletized ore), and fluxes (limestone and dolomite) to continuously produce liquid pig iron within the blast furnace. It is a crucial step in modern steel production. Modern blast furnace ironmaking evolved from the ancient shaft furnace ironmaking method. Although numerous ironmaking methods have been developed worldwide, blast furnace ironmaking remains the predominant method of modern ironmaking due to its relatively simple process, high output, high labor productivity, and low energy consumption. It accounts for over 95% of the world's total pig iron production. Under normal blast furnace operation, high furnace pressures and intense smelting generate significant amounts of gas. To prevent gas leakage, the tuyere area of the blast furnace is equipped with effective gas sealing measures. However, when the tuyere begins operating, the high temperature within the furnace introduces dust into the tuyere sleeve. Over time, ash can enter the gaps between the sleeves, corroding the seals and damaging them, ultimately leading to damage to the tuyere sealing mechanism. Therefore, we propose a sealing device for a large blast furnace tuyere sleeve.

[0003] For example, a tuyere sleeve sealing structure with the announcement number CN217683218U relates to the technical field of blast furnace tuyere sleeves, which includes a mating surface, which is arranged on the circumferential outer wall of the tuyere sleeve near its own air inlet, and the mating surface is provided with a sealing ring groove, and the sealing ring groove is filled with a heat-resistant sealing strip, and the end face of the heat-resistant sealing strip exceeds the opening end face of the sealing ring groove. This patent has the effect of improving the sealing ability of the tuyere sleeve after connection.

[0004] The above patent can improve the sealing ability of the air outlet after the connection, but the sealing area of its sealing ring and related sealing structure is relatively small for the sealing sleeve. If the air outlet sleeve connected to it is larger, the sealing performance of the structure is poor, and it cannot be adjusted accordingly according to the size of the connected air outlet sleeve. When in use, it can only be connected to an air outlet sleeve of a single diameter.

[0005] Therefore, we propose a blast furnace tuyere sleeve sealing surface to solve the problems raised above. Utility Model Content

[0006] The purpose of the utility model is to provide a sealing surface for a blast furnace tuyere sleeve, so as to solve the problem that the sealing ring and the related sealing structure proposed in the above-mentioned background technology have a small blocking area for the sealing sleeve, and if the tuyere sleeve connected thereto is larger, the sealing performance of the structure is poor, and the corresponding adjustment cannot be made according to the size of the connected tuyere sleeve. When in use, the structure can only be connected to a tuyere sleeve of a single diameter.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing surface of a blast furnace tuyere sleeve, comprising a large tuyere sleeve and a small tuyere sleeve slidably installed in the large tuyere sleeve, a plurality of water cooling channels being equidistantly provided in the large tuyere sleeve and the small tuyere sleeve, a sealing assembly being installed between the large tuyere sleeve and the small tuyere sleeve, the sealing assembly comprising an inflatable sealing ring 1 in contact with the side of the small tuyere sleeve, a sealing belt 1 being fixedly installed on the side of the inflatable sealing ring 1, and an inflatable sealing ring 2 being fixedly installed on the side of the sealing belt.

[0008] Preferably, the second inflatable sealing ring is arranged between the large tuyere sleeve and the small tuyere sleeve.

[0009] Preferably, a sealing belt 2 is fixedly installed on the side of the second inflatable sealing ring, and a sealing ring is fixedly installed on one end of the second sealing belt. The sealing ring is arranged at the external gap between the large air outlet sleeve and the small air outlet sleeve.

[0010] Preferably, a connecting pipe 1 is provided in the sealing belt 1, and a connecting pipe 2 is provided in the sealing belt 2.

[0011] Preferably, an air inlet nozzle is fixedly installed at one end of the second sealing belt, and the first inflatable sealing ring and the second inflatable sealing ring are connected.

[0012] Preferably, a plurality of thread grooves are equidistantly formed on the side wall of the large air inlet sleeve, and a plurality of threaded pins are equidistantly rotatably mounted on the sealing ring, and the threaded pins are threadedly connected to the thread grooves.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. Sleeve the sealing component on the outer periphery of the small tuyere sleeve, insert the small tuyere sleeve into the large tuyere sleeve, and slide it out from the end with the smaller inner diameter of the large tuyere sleeve so that the two gradually fit together. At this time, air can be pumped into the inflatable sealing ring 1 and the inflatable sealing ring 2. The air in the inflatable sealing ring 1 and the inflatable sealing ring 2 gradually increases and the two expand to fill the gap at the contact point. The inflatable sealing ring 1 and the inflatable sealing ring 2 have a certain deformation ability and can better fit the gap at the connection. The sealing surface of the blast furnace tuyere sleeve fills the gap at the connection of the tuyere sleeve through the inflatable sealing ring 1 and the inflatable sealing ring 2, so the airtightness effect is better and it is suitable for sealing between tuyere sleeves between different pipe diameters.

[0015] 2. With the cooperation between the thread groove, connecting pipe 1, inflatable sealing ring 2, sealing belt 2, connecting pipe 2, air inlet nozzle, sealing ring and threaded nails, the device uses multiple sealing mechanisms to seal multiple gaps at the connection between the large air outlet sleeve and the small air outlet sleeve, and the sealing performance is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall cross-sectional three-dimensional structure of the utility model;

[0018] Figure 3 For the utility model Figure 2 A in the middle is an enlarged schematic diagram of the three-dimensional structure;

[0019] Figure 4 For the utility model Figure 2 The enlarged schematic diagram of the three-dimensional structure at point B in the middle.

[0020] In the figure: 1. Large air outlet sleeve; 11. Threaded groove; 2. Small air outlet sleeve; 3. Water cooling channel; 4. Sealing assembly; 41. Inflatable sealing ring 1; 42. Sealing belt 1; 43. Connecting pipe 1; 44. Inflatable sealing ring 2; 45. Sealing belt 2; 46. Connecting pipe 2; 47. Air inlet nozzle; 48. Sealing ring; 49. Threaded nail. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1 - Figure 3 A blast furnace tuyere sleeve sealing surface comprises a large tuyere sleeve 1 and a small tuyere sleeve 2 slidably installed in the large tuyere sleeve 1, a plurality of water cooling channels 3 are equidistantly provided in the large tuyere sleeve 1 and the small tuyere sleeve 2, a sealing assembly 4 is installed between the large tuyere sleeve 1 and the small tuyere sleeve 2, the sealing assembly 4 comprises an inflatable sealing ring 41 in contact with the side of the small tuyere sleeve 2, a sealing belt 42 is fixedly installed on the side of the inflatable sealing ring 41, and an inflatable sealing ring 2 44 is fixedly installed on the side of the sealing belt 42.

[0023] In this embodiment, before the large air vent sleeve 1 and the small air vent sleeve 2 are sleeved together, the sealing component 4 is first sleeved on the outer periphery of the small air vent sleeve 2. After the sleeve connection is completed, the small air vent sleeve 2 can be inserted into the large air vent sleeve 1 and slid out from the end with the smaller inner diameter of the large air vent sleeve 1. The outer wall of the small air vent sleeve 2 and the inner wall of the large air vent sleeve 1 are in contact with each other so that the two gradually fit together. At this time, air can be pumped into the inflatable sealing ring 1 41 and the inflatable sealing ring 2 44. The inflatable sealing ring 1 41 and the The air in the inflatable sealing ring 44 gradually increases and the two expand, filling the gap at the contact point, and the inflatable inflatable sealing ring 1 41 and the inflatable sealing ring 2 44 have a certain deformation ability, which can better fit the gap at the connection point. The sealing surface of the blast furnace tuyere sleeve fills the gap at the connection point of the tuyere sleeve through the inflatable inflatable sealing ring 1 41 and the inflatable sealing ring 2 44, and the airtightness effect is better, and it is suitable for sealing between tuyere sleeves with different pipe diameters.

[0024] Example 2: This example is an improvement made on the basis of Example 1. For details, please refer to Figure 2 - Figure 4 The second inflatable sealing ring 44 is arranged between the large tuyere sleeve 1 and the small tuyere sleeve 2, and the gap between the large tuyere sleeve 1 and the small tuyere sleeve 2 is filled by the second inflatable sealing ring 44.

[0025] A sealing belt 45 is fixedly installed on the side of the inflatable sealing ring 44, and a sealing ring 48 is fixedly installed on one end of the sealing belt 45. The sealing ring 48 is set in the external gap between the large air outlet sleeve 1 and the small air outlet sleeve 2. The sealing ring 48 fills the external gap between the large air outlet sleeve 1 and the small air outlet sleeve 2.

[0026] A connecting pipe 1 43 is provided in the sealing belt 1 42 , and a connecting pipe 2 46 is provided in the sealing belt 2 45 . The inflatable sealing ring 1 41 and the inflatable sealing ring 2 44 are inflated through the connecting pipe 1 43 and the connecting pipe 2 46 .

[0027] An air inlet nozzle 47 is fixedly installed at one end of the sealing belt 2 45 , and the inflation sealing ring 1 41 and the inflation sealing ring 2 44 are connected, and inflation and deflation can be achieved through the air inlet nozzle 47 .

[0028] The side wall of the tuyere sleeve 1 is provided with a plurality of thread grooves 11 at equal intervals, and a plurality of threaded pins 49 are rotatably mounted on the sealing ring 48 at equal intervals. The threaded pins 49 are threadedly connected to the threaded grooves 11 , and the sealing assembly 4 can be fixed to the tuyere sleeve 1 as a whole through the threaded pins 49 .

[0029] In this embodiment: when the large tuyere sleeve 1 and the small tuyere sleeve 2 are inserted and connected together, air is pumped into the inflatable sealing ring 2 44 along the connecting pipe 2 46 through the air inlet nozzle 47, and the air then enters the inflatable sealing ring 1 41 along the connecting pipe 1. When the air in the inflatable sealing ring 1 41 and the inflatable sealing ring 2 44 gradually increases, the inflatable sealing ring 2 44 gradually expands to fill the gap between the large tuyere sleeve 1 and the small tuyere sleeve 2 to an inflatable posture, and the inflatable sealing ring 1 41 expands to seal the internal connection between the large tuyere sleeve 1 and the small tuyere sleeve 2. At this time, the sealing ring 48 can be fixedly installed on the surface of the large tuyere sleeve 1 by the threaded nails 49. Under the action of multiple threaded nails 49, the sealing ring 48 can seal the gap at the external connection between the large tuyere sleeve 1 and the small tuyere sleeve 2. The device uses multiple sealing mechanisms to seal multiple gaps at the connection between the large tuyere sleeve 1 and the small tuyere sleeve 2, and the sealing performance is good.

[0030] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A blast furnace tuyere sleeve sealing surface, comprising a large tuyere sleeve (1) and a small tuyere sleeve (2) slidably mounted in the large tuyere sleeve (1), characterized in that: A plurality of water cooling channels (3) are equidistantly provided in the large tuyere sleeve (1) and the small tuyere sleeve (2). A sealing assembly (4) is installed between the large tuyere sleeve (1) and the small tuyere sleeve (2). The sealing assembly (4) includes an inflatable sealing ring (41) in contact with the side of the small tuyere sleeve (2). A sealing belt (42) is fixedly installed on the side of the inflatable sealing ring (41), and an inflatable sealing ring (44) is fixedly installed on the side of the sealing belt (42).

2. The blast furnace tuyere sleeve sealing surface according to claim 1, characterized in that: The second inflatable sealing ring (44) is arranged between the large air outlet sleeve (1) and the small air outlet sleeve (2).

3. The sealing surface of a blast furnace tuyere sleeve according to claim 2, characterized in that: A second sealing belt (45) is fixedly mounted on the side of the second inflatable sealing ring (44), and a sealing ring (48) is fixedly mounted on one end of the second sealing belt (45). The sealing ring (48) is arranged at the external gap between the large air outlet sleeve (1) and the small air outlet sleeve (2).

4. The blast furnace tuyere sleeve sealing surface according to claim 3, characterized in that: A connecting pipe 1 (43) is provided in the sealing belt 1 (42), and a connecting pipe 2 (46) is provided in the sealing belt 2 (45).

5. The sealing surface of a blast furnace tuyere sleeve according to claim 4, characterized in that: An air inlet nozzle (47) is fixedly mounted on one end of the second sealing belt (45), and the first inflatable sealing ring (41) and the second inflatable sealing ring (44) are in communication with each other.

6. The sealing surface of a blast furnace tuyere sleeve according to claim 5, characterized in that: The side wall of the large air inlet sleeve (1) is provided with a plurality of thread grooves (11) at equal intervals, and the sealing ring (48) is provided with a plurality of threaded pins (49) rotatably mounted at equal intervals, wherein the threaded pins (49) are threadedly connected to the thread grooves (11).

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