A nitrogen seal assembly

Abstract

The utility model relates to a nitrogen seal sealing device belongs to sealing device technical field, including nitrogen seal ring, the lower part of nitrogen seal ring is equipped with nitrogen seal seat, the upper part of nitrogen seal ring is equipped with nitrogen seal cover board, nitrogen seal cover board is circular ring, the outer periphery of nitrogen seal cover board is equipped with extension plate, extension plate is circular ring, the position of extension plate is close to the outer edge and is connected with first fire -retardant cloth through bolt, the center of nitrogen seal cover board is equipped with second through -hole, the one circle of nitrogen seal cover board is close to second through -hole and is equipped with second fire -retardant cloth, the setting of the utility model nitrogen seal cover board and fire -retardant cloth can more effectively cover the spark of spatter and the overflow flue gas, first fire -retardant cloth can cover the spark and flue gas of leak between nitrogen seal ring and nitrogen seal seat, second fire -retardant cloth can cover the spark and flue gas of leak between nitrogen seal ring and oxygen lance, can further reduce the high -temperature smoke dust of overflow when converter smelting, make high -temperature smoke dust more be received by flue gas dust removal system.

Description

Technical Field

[0001] This utility model relates to a nitrogen-sealing device, belonging to the technical field of sealing devices. Background Technology

[0002] During the smelting process, the converter generates a large amount of high-temperature flue gas, most of which is received by the flue gas dust removal system through the flue. However, the openings for the oxygen lance in and out of the flue will cause flue gas to overflow and sparks to splash out. Therefore, nitrogen sealing devices (nitrogen sealing seat and nitrogen sealing ring) are installed at the oxygen inlet and outlet to seal them, but the sealing effect is poor. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a nitrogen sealing device to address the above-mentioned shortcomings. The nitrogen sealing cover and fireproof cloth can further reduce the high-temperature dust overflowing during converter smelting, so that more high-temperature dust can be received by the flue gas dust removal system.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: a nitrogen sealing device, including a nitrogen sealing ring, a nitrogen sealing seat below the nitrogen sealing ring, a nitrogen sealing cover plate above the nitrogen sealing ring, the nitrogen sealing cover plate being annular, an extension plate being provided on the outer periphery of the nitrogen sealing cover plate, the extension plate being annular, a first fireproof cloth being bolted to the position near the outer edge of the extension plate, a second through hole being provided in the center of the nitrogen sealing cover plate, and a second fireproof cloth being provided around the nitrogen sealing cover plate near the second through hole.

[0005] As a further improvement to the above technical solution: The outer diameter of the nitrogen sealing cover plate is smaller than the outer diameter of the nitrogen sealing ring. The nitrogen sealing ring has a cavity in the center through which the oxygen supply gun passes. The diameter of the second through hole is less than or equal to the diameter of the cavity.

[0006] The inner diameter of the extension plate is smaller than the outer diameter of the nitrogen-sealed cover plate, and the outer edge of the first fireproof cloth naturally drapes downwards.

[0007] The width of the first fireproof cloth is 100-260mm and the thickness is 2-6mm.

[0008] The second fireproof cloth has a third through hole in the center, and the diameter of the third through hole is less than or equal to the diameter of the second through hole.

[0009] The second fireproof cloth has a width of 20-50mm and a thickness of 1-3mm.

[0010] The nitrogen-sealing cover plate is provided with two fixing plates, which are arranged symmetrically.

[0011] The fixing plate is provided with a number of bolt holes evenly distributed, and the fixing plate is fixed to the nitrogen sealing cover plate through the bolt holes and bolts.

[0012] The fixing plate is equipped with connectors.

[0013] The connector is provided with a first through hole.

[0014] The present invention adopts the above technical solution and has the following advantages: The nitrogen sealing cover plate and fireproof cloth of the present invention can more effectively cover the splashed sparks and overflowing flue gas. The first fireproof cloth can cover the sparks and flue gas leaking between the nitrogen sealing ring and the nitrogen sealing seat, and the second fireproof cloth can cover the sparks and flue gas leaking between the nitrogen sealing ring and the oxygen lance. This can further reduce the high-temperature dust overflowing during converter smelting and allow more high-temperature dust to be received by the flue gas dust removal system.

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a nitrogen-sealing device according to an embodiment of this utility model; Figure 2 yes Figure 1 Top view.

[0017] In the picture, 1-Nitrogen sealing ring, 2-Nitrogen sealing seat, 3-Nitrogen sealing cover plate, 4-Fixing plate, 5-Bolt hole, 6-Connector, 7-First through hole, 8-Extension plate, 9-Bolt, 10-First fireproof cloth, 11-Second fireproof cloth, 12-Cavity, 13-Second through hole, 14-Third through hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Example 1

[0021] like Figure 1-2 As shown, a nitrogen sealing device includes a nitrogen sealing ring 1, a nitrogen sealing seat 2 below the nitrogen sealing ring 1, and a nitrogen sealing cover plate 3 above the nitrogen sealing ring 1. The nitrogen sealing cover plate 3 is annular, and its outer diameter is smaller than that of the nitrogen sealing ring 1. A second through hole 13 is provided in the center of the nitrogen sealing cover plate 3, and a cavity 12 through which an oxygen supply gun passes is provided in the center of the nitrogen sealing ring 1. The diameter of the second through hole 13 is less than or equal to the diameter of the cavity 12.

[0022] The nitrogen sealing cover plate 3 is provided with two fixing plates 4, which are symmetrically arranged. The fixing plates 4 are evenly provided with a number of bolt holes 5. The fixing plates 4 are fixed to the nitrogen sealing cover plate 3 through the bolt holes 5 and bolts. The fixing plates 4 are provided with connectors 6, and the connectors 6 are provided with a first through hole 7. The nitrogen sealing cover plate 3 can be picked up and put down by means of a lifting rope and connectors 6.

[0023] An extension plate 8 is provided on the outer periphery of the nitrogen sealing cover plate 3. The extension plate 8 is circular and its inner diameter is smaller than that of the nitrogen sealing cover plate 3. A first fireproof cloth 10 is connected to the extension plate 8 near its outer edge by bolts 9. The outer edge of the first fireproof cloth 10 naturally drapes downward. The width of the first fireproof cloth 10 is 100mm and its thickness is 2mm.

[0024] A second fireproof cloth 11 is provided around the nitrogen-sealed cover plate 3 near the second through hole 13. A third through hole 14 is provided in the center of the second fireproof cloth 11. The diameter of the third through hole 14 is less than or equal to the diameter of the second through hole 13. The width of the second fireproof cloth 11 is 20 mm and the thickness is 1 mm. Example 2

[0025] like Figure 1-2 As shown, a nitrogen sealing device includes a nitrogen sealing ring 1, a nitrogen sealing seat 2 below the nitrogen sealing ring 1, and a nitrogen sealing cover plate 3 above the nitrogen sealing ring 1. The nitrogen sealing cover plate 3 is annular, and its outer diameter is smaller than that of the nitrogen sealing ring 1. A second through hole 13 is provided in the center of the nitrogen sealing cover plate 3, and a cavity 12 through which an oxygen supply gun passes is provided in the center of the nitrogen sealing ring 1. The diameter of the second through hole 13 is less than or equal to the diameter of the cavity 12.

[0026] The nitrogen sealing cover plate 3 is provided with two fixing plates 4, which are symmetrically arranged. The fixing plates 4 are evenly provided with a number of bolt holes 5. The fixing plates 4 are fixed to the nitrogen sealing cover plate 3 through the bolt holes 5 and bolts. The fixing plates 4 are provided with connectors 6, and the connectors 6 are provided with a first through hole 7. The nitrogen sealing cover plate 3 can be picked up and put down by means of a lifting rope and connectors 6.

[0027] An extension plate 8 is provided on the outer periphery of the nitrogen sealing cover plate 3. The extension plate 8 is circular and its inner diameter is smaller than the outer diameter of the nitrogen sealing cover plate 3. A first fireproof cloth 10 is connected to the extension plate 8 near its outer edge by bolts 9. The outer edge of the first fireproof cloth 10 naturally drapes downward. The width of the first fireproof cloth 10 is 260mm and its thickness is 6mm.

[0028] A second fireproof cloth 11 is provided around the nitrogen-sealed cover plate 3 near the second through hole 13. A third through hole 14 is provided in the center of the second fireproof cloth 11. The diameter of the third through hole 14 is less than or equal to the diameter of the second through hole 13. The width of the second fireproof cloth 11 is 50 mm and the thickness is 3 mm. Example 3

[0029] like Figure 1-2 As shown, a nitrogen sealing device includes a nitrogen sealing ring 1, a nitrogen sealing seat 2 below the nitrogen sealing ring 1, and a nitrogen sealing cover plate 3 above the nitrogen sealing ring 1. The nitrogen sealing cover plate 3 is annular, and its outer diameter is smaller than that of the nitrogen sealing ring 1. A second through hole 13 is provided in the center of the nitrogen sealing cover plate 3, and a cavity 12 through which an oxygen supply gun passes is provided in the center of the nitrogen sealing ring 1. The diameter of the second through hole 13 is less than or equal to the diameter of the cavity 12.

[0030] The nitrogen sealing cover plate 3 is provided with two fixing plates 4, which are symmetrically arranged. The fixing plates 4 are evenly provided with a number of bolt holes 5. The fixing plates 4 are fixed to the nitrogen sealing cover plate 3 through the bolt holes 5 and bolts. The fixing plates 4 are provided with connectors 6, and the connectors 6 are provided with a first through hole 7. The nitrogen sealing cover plate 3 can be picked up and put down by means of a lifting rope and connectors 6.

[0031] An extension plate 8 is provided on the outer periphery of the nitrogen sealing cover plate 3. The extension plate 8 is circular and its inner diameter is smaller than that of the nitrogen sealing cover plate 3. A first fireproof cloth 10 is connected to the extension plate 8 near its outer edge by bolts 9. The outer edge of the first fireproof cloth 10 naturally drapes downward. The width of the first fireproof cloth 10 is 180mm and its thickness is 4mm.

[0032] A second fireproof cloth 11 is provided around the nitrogen-sealed cover plate 3 near the second through hole 13. A third through hole 14 is provided in the center of the second fireproof cloth 11. The diameter of the third through hole 14 is less than or equal to the diameter of the second through hole 13. The width of the second fireproof cloth 11 is 35mm and the thickness is 2mm.

[0033] In use, the nitrogen sealing cover plate 3 is placed on the nitrogen sealing ring 1 by means of the suspension rope and connector 6. The second fireproof cloth 11 is placed around the nitrogen sealing cover plate 3 near the second through hole 13. The first fireproof cloth 10 is fixed to the extension plate 8 near the outer edge by the bolts 9. This can effectively cover the splashed sparks and overflowing flue gas. The first fireproof cloth 10 can cover the sparks and flue gas leaking between the nitrogen sealing ring 1 and the nitrogen sealing seat 2. The second fireproof cloth 11 can cover the sparks and flue gas leaking between the nitrogen sealing ring 1 and the oxygen lance. This can further reduce the high-temperature dust overflowing during converter smelting and allow more high-temperature dust to be received by the flue gas dust removal system.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A nitrogen-sealing device, characterized in that: It includes a nitrogen sealing ring (1), a nitrogen sealing seat (2) below the nitrogen sealing ring (1), a nitrogen sealing cover plate (3) above the nitrogen sealing ring (1), the nitrogen sealing cover plate (3) is annular, an extension plate (8) is provided on the outer periphery of the nitrogen sealing cover plate (3), the extension plate (8) is annular, a first fireproof cloth (10) is connected to the extension plate (8) near the outer edge by bolts (9), a second through hole (13) is provided in the center of the nitrogen sealing cover plate (3), and a second fireproof cloth (11) is provided around the nitrogen sealing cover plate (3) near the second through hole (13).

2. The nitrogen-sealing device according to claim 1, characterized in that: The outer diameter of the nitrogen sealing cover plate (3) is smaller than the outer diameter of the nitrogen sealing ring (1). The center of the nitrogen sealing ring (1) is provided with a cavity (12) through which the oxygen supply gun passes. The diameter of the second through hole (13) is less than or equal to the diameter of the cavity (12).

3. The nitrogen-sealing device according to claim 2, characterized in that: The inner diameter of the extension plate (8) is smaller than the outer diameter of the nitrogen-sealed cover plate (3), and the outer edge of the first fireproof cloth (10) naturally falls downward.

4. The nitrogen-sealing device according to claim 3, characterized in that: The width of the first fireproof cloth (10) is 100-260mm and the thickness is 2-6mm.

5. A nitrogen-sealing device according to claim 4, characterized in that: The second fireproof cloth (11) has a third through hole (14) at its center, and the diameter of the third through hole (14) is less than or equal to the diameter of the second through hole (13).

6. A nitrogen-sealing device according to claim 5, characterized in that: The width of the second fireproof cloth (11) is 20-50mm and the thickness is 1-3mm.

7. A nitrogen-sealing device according to claim 6, characterized in that: The nitrogen sealing cover plate (3) is provided with two fixing plates (4), which are symmetrically arranged.

8. A nitrogen-sealing device according to claim 7, characterized in that: The fixing plate (4) is provided with a number of bolt holes (5) evenly distributed on it. The fixing plate (4) is fixed to the nitrogen sealing cover plate (3) through the bolt holes (5) and bolts.

9. A nitrogen-sealing device according to claim 8, characterized in that: The fixing plate (4) is provided with a connector (6).

10. A nitrogen-sealing device according to claim 9, characterized in that: The connector (6) is provided with a first through hole (7).

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