Small oven door sealing structure on machine side of top-loading coke oven

Abstract

The utility model belongs to the field of coking equipment. The utility model provides a machine-side small oven door sealing structure of a top-loading coke oven. The sealing structure generally comprises a communicating device and a small furnace door brick groove. A first sealing part is arranged at the lower end of the communication device body and comprises a second section extending downwards and vertically, the second section comprises a shell and an inner core arranged in the shell, the shell is made of elastic materials, and the inner core comprises thermal expansion materials. A second sealing part is arranged at the upper end of the small furnace door brick groove body and comprises a transverse section extending transversely and a vertical section extending upwards and vertically, the transverse section, the vertical section and the side wall of the brick groove body define a receiving groove, the receiving groove is used for receiving the first sealing part, and the first sealing part and the receiving groove are matched in size to form sealing. The sealing structure for the machine-side small oven door of the top-loading coke oven has multiple sealing effects, and the sealing performance between the communicating device and the brick groove of the small oven door is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of coking equipment, in particular to a sealing structure of a small oven door on the machine side of a top-loading coke oven. Background Art

[0002] As an important part of coke oven equipment, the oven door of a coke oven plays a crucial role in the entire coking process. Its sealing performance is directly related to coke quality and equipment safety performance, etc. Due to the poor sealing of the oven door of the coke oven resulting in fire and smoke leakage, not only heat is lost, but also the environment is seriously polluted. Therefore, improving the sealing of the oven door and enhancing its service performance not only have great economic benefits but also good social benefits.

[0003] A small oven door is provided on the machine side of a top-loading coke oven, which successively includes a small oven door cover, a connecting device, a rib plate, a web plate, and a small oven door brick groove from outside to inside, and is connected by bolts into an integral cavity, through which a coal leveler enters and exits for coal leveling operation. The small oven door on the machine side of the coke oven adopts a four-layer sandwich structure, and asbestos boards are used for sealing between layers. During use, the small oven door is frequently opened and closed to draw in air, resulting in high temperature. Due to the poor sealing between the connecting device and the small oven door brick groove, high-temperature flue gas escapes from the connection between the two, causing damage to the sealing material, and enabling high-pressure raw coke oven gas to overflow from the damaged sealing area during the initial stage of coal charging. After this situation occurs, the damaged oven door needs to be replaced for repair and the sealing material needs to be replaced. However, the disassembly and assembly of the small oven door body and the small oven door structure parts take a long time, and the secondary burning loss rate after repair is high, and the repair amount is large.

[0004] Therefore, it is necessary to study a sealing structure of a small oven door on the machine side of a top-loading coke oven. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a sealing structure of a small oven door on the machine side of a top-loading coke oven to improve the sealing performance between the connecting device and the small oven door brick groove.

[0006] According to one aspect of the utility model, there is provided a sealing structure of a small oven door on the machine side of a top-loading coke oven, including:

[0007] A connecting device, the connecting device includes a cylindrical main body and a first cavity located inside the cylindrical main body. A first sealing portion is provided at the lower end of the cylindrical main body. The first sealing portion includes a first section extending horizontally towards the first cavity and a second section extending vertically downwards. The second section includes an outer shell and an inner core provided inside the outer shell. The outer shell is made of an elastic material and can produce elastic deformation, and the inner core includes a thermal expansion material;

[0008] Small furnace door brick groove, the small furnace door brick groove includes a cylindrical brick groove body and a second cavity located inside the cylindrical body. The upper end of the brick groove body is provided with a second sealing portion. The second sealing portion includes a transverse section extending horizontally towards the second cavity and a vertical section extending vertically upwards. The transverse section, the vertical section and the side wall of the brick groove body enclose a receiving groove, and the receiving groove is used to receive the first sealing portion and the two are dimensionally matched to form a seal.

[0009] According to an embodiment of the present invention, the outer shell includes two legs arranged relatively spaced apart and a connecting portion connecting the bottoms of the two legs together, and the inner core is sandwiched between the two legs.

[0010] According to an embodiment of the present invention, the top of the leg of the outer shell closer to the inside in the horizontal direction is fixedly connected to the first section, and the leg of the outer shell farther from the outside in the horizontal direction can move horizontally.

[0011] According to an embodiment of the present invention, the first section and the cylindrical body are integrally formed.

[0012] According to an embodiment of the present invention, the outer shell is made of an elastic metal plate.

[0013] According to an embodiment of the present invention, the outer shell is bent from a galvanized spring steel plate with a thickness of 1.5 - 2.5 mm.

[0014] According to an embodiment of the present invention, the inner core includes a flexible outer layer and a thermal expansion material accommodated in the flexible outer layer.

[0015] According to an embodiment of the present invention, the thermal expansion material is a sodium silicate-based material.

[0016] According to an embodiment of the present invention, the transverse section and the vertical section are integrally formed with the brick groove body.

[0017] According to an embodiment of the present invention, the communication device further includes a first outer flange provided at the lower end of the cylindrical body and extending horizontally outwards, and the small furnace door brick groove further includes a second outer flange provided at the lower end of the brick groove body and extending horizontally outwards. The first outer flange and the second outer flange are fixedly connected by fasteners.

[0018] Due to the above technical solution, the side small furnace door sealing structure of the top-loading coke oven according to the present utility model has multiple sealing effects. On the one hand, the tortuous structure formed by the first sealing part and the second sealing part can generate resistance to the high-temperature flue gas, reducing its flow velocity and flow rate, making it difficult to escape. On the other hand, when the high-temperature flue gas flows through the gap between the first sealing part and the second sealing part, the thermal expansion material of the inner core expands due to heat, pushing the outer shell to deform and abut against the side wall of the second sealing part, preventing the flue gas from escaping and achieving effective sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following specific embodiments to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0020] Figure 1 shows a schematic diagram of the relevant structure of the side small furnace door of the top-loading coke oven according to an embodiment of the present utility model;

[0021] Figure 2 shows a cross-sectional view of the side small furnace door sealing structure of the top-loading coke oven according to an embodiment of the present utility model.

[0022] DESCRIPTION OF THE REFERENCE NUMERALS

[0023] 100, small furnace door cover; 110, pivot bracket; 120, locking device; 121, locking bracket; 122, locking pin; 200, communication device; 210, first sealing part; 211, first section; 212, second section; 212a, outer shell; 212b, inner core; 220, first outer flange; 300, small furnace door brick groove; 310, second sealing part; 311, horizontal section; 312, vertical section; 313, receiving groove; 320, second outer flange. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following detailed description of the specific embodiments of the present disclosure is provided in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present disclosure and are not intended to limit the present disclosure.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs; the terms used herein in the specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. For example, the terms "length", "width", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position shown in the drawings, and are only for convenience of description and should not be construed as a limitation to the technical solution of the present application.

[0026] In the description, claims and above-mentioned drawings of the present utility model, the terms "comprising", "having" and any variations thereof are intended to cover non-exclusive inclusion; the terms "first", "second", etc. in the description, claims or above-mentioned drawings of the present utility model are used to distinguish different objects, rather than to describe a specific order. The meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0027] In the description, claims and above-mentioned drawings of the present utility model, when an element is referred to as "fixed to", "mounted on", "disposed on" or "connected to" another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as "connected to" another element, it may be directly or indirectly connected to the other element.

[0028] In addition, the mention of "embodiment" herein means that a specific feature, structure or characteristic described in connection with the embodiment may be included in at least one embodiment of the present utility model. The phrase appears at various positions in the description does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0029] An object of the present utility model is to provide a sealing structure for the side small oven door of a top-loading coke oven to improve the sealing performance between the communication device and the small oven door brick groove. The sealing structure generally includes a communication device and a small oven door brick groove. Among them, the communication device includes a cylindrical main body and a first cavity located inside the cylindrical main body. The lower end of the cylindrical main body is provided with a first sealing portion, and the first sealing portion includes a first section extending horizontally towards the first cavity and a second section extending vertically downwards. The second section includes an outer shell and a core arranged inside the outer shell. The outer shell is made of an elastic material and can produce elastic deformation, and the core includes a thermal expansion material. The small oven door brick groove includes a cylindrical brick groove main body and a second cavity located inside the cylindrical brick groove main body. The upper end of the brick groove main body is provided with a second sealing portion, and the second sealing portion includes a horizontal section extending horizontally towards the second cavity and a vertical section extending vertically upwards. The horizontal section, the vertical section and the side wall of the brick groove main body enclose a receiving groove for receiving the first sealing portion, and the two are dimensionally matched to form a seal.

[0030] The following will exemplarily and in detail describe the sealing structure of the side small oven door of the top-loading coke oven according to the present utility model with reference to the drawings and specific embodiments.

[0031] To better understand the sealing structure of the side small oven door of the top-loading coke oven of the present utility model, the overall structures of the respective components related to the small oven door will be exemplarily described below.

[0032] Figure 1 The figure shows a simplified diagram of the relevant structure of the side small furnace door of a top-loading coke oven according to an embodiment of the present utility model. As shown in the figure, the side small furnace door of the top-loading coke oven is sequentially provided with a small furnace door cover 100, a connecting device 200, and a small furnace door brick groove 300 from outside to inside.

[0033] The small furnace door cover 100 is rotatably mounted on one side to the connecting device 200. For example, the small furnace door cover 100 can be pivotally connected to the connecting device 200 through a pivot bracket 110. A knife edge and a web can be provided on one side of the small furnace door cover 100, so that when the small furnace door cover 100 is tightly closed, the knife edge and the web can seal the gap between the edge of the small furnace door cover 100 and the top of the connecting device 200, preventing flue gas from escaping from this place and enhancing the overall sealing performance of the small furnace door.

[0034] A locking device 120 can be provided on the side opposite to the installation side, and the locking device 120 can lock and fix the small furnace door cover 100 to the connecting device 200. For example, the locking device 120 can include a locking bracket 121 fixedly connected to the outside of the side wall of the connecting device 200 and a locking pin 122 fixedly connected to the small furnace door cover 100. When the locking pin 122 is inserted into the locking bracket 121, the small furnace door cover 100 can be locked and fixed to the connecting device 200. When the coal leveling operation needs to be carried out, the locking device 120 is released, and the small furnace door cover 100 is rotated to open the inlet, and the coal leveling rod is inserted into the cavity of the connecting device 200 for the coal leveling operation. After the coal leveling is completed, the small furnace door cover 100 is closed, and the locking device 120 is locked to prevent flue gas from escaping.

[0035] The connecting device 200 is used to connect the small furnace door cover 100 and the small furnace door brick groove 300. The connecting device 200 generally has a square cylindrical structure. Further referring to Figure 2 , the connecting device 200 generally includes a cylindrical main body and a first cavity located inside the cylindrical main body. A first sealing portion 210 is provided at the lower end of the cylindrical main body. The first sealing portion 210 includes a first section 211 that extends horizontally toward the first cavity and a second section 212 that extends vertically downward. The second section 212 includes an outer shell 212a and an inner core 212b provided inside the outer shell 212a. The outer shell 212a is made of an elastic material and can produce elastic deformation, and the inner core 212b includes a thermal expansion material.

[0036] The small furnace door brick groove 300 generally includes a cylindrical brick groove main body and a second cavity located inside the cylindrical main body. A second sealing portion 310 is provided at the upper end of the brick groove main body. The second sealing portion 310 can include a horizontal section 311 that extends horizontally toward the second cavity and a vertical section 312 that extends vertically upward. The horizontal section 311, the vertical section 312, and the side wall of the brick groove main body enclose a receiving groove 313, and the receiving groove 313 is used to receive the first sealing portion 210 and the two are dimensionally matched to form a seal.

[0037] In one embodiment, the first section 211 is integrally formed with the cylindrical body, which facilitates processing and simplifies the structure.

[0038] In one embodiment, the outer shell 212a includes two legs arranged relatively apart and a connecting portion connecting the bottom ends of the two legs, and the inner core 212b is sandwiched between the two legs. That is, the outer shell 212a is generally U-shaped, and the inner core 212b is accommodated in the hollow region inside the U-shape. The outer shell 212a can be made of an elastic metal plate, which can be elastically deformed while being resistant to high temperatures. For example, a galvanized spring steel plate with a thickness of 1.5 - 2.5 mm can be bent to make the outer shell 212a. The top end of the inner leg (i.e., the direction generally perpendicular to the side wall of the cylindrical body) of the outer shell 212a is fixedly connected to the first section 211, and the outer leg of the outer shell 212a can move laterally. That is, the top position of one leg is fixed, and the other leg can be deformed and move laterally, so as to block the gap between the first sealing portion 210 and the second sealing portion 310 through deformation.

[0039] In one embodiment, the inner core 212b can include a flexible outer layer and a thermal expansion material accommodated in the flexible outer layer. The flexible outer layer can have a certain flexibility and elasticity, which can encapsulate the thermal expansion material in the outer layer. At the same time, when the thermal expansion material expands due to heat, the flexible outer layer can expand to increase the volume. The flexible outer layer can be made of, for example, silicone or high-temperature resistant fiberglass. The thermal expansion material can adopt a sodium silicate-based material, such as a sodium silicate expander or a composite material formed by sodium silicate and other active minerals or additives, and such materials can produce a large expansion.

[0040] In one embodiment, the horizontal section 311 and the vertical section 312 are integrally formed with the brick groove body, which facilitates processing and simplifies the structure.

[0041] In one embodiment, referring to Figure 1 , the communication device 200 may further include a first outer flange 220 provided at the lower end of the cylindrical body and extending laterally, and the small furnace door brick groove 300 further includes a second outer flange 320 provided at the lower end of the brick groove body and extending laterally. The first outer flange 220 and the second outer flange 320 are fixedly connected by a fastener such as a bolt.

[0042] In one embodiment, a heat insulation sealant can also be provided on the butting surface of the first outer flange 220 and the second outer flange 320. A heat insulation member such as asbestos can be used to further increase the sealing performance of the structure and prevent flue gas from escaping.

[0043] The side small furnace door sealing structure of the top-loading coke oven according to the present utility model has multiple sealing effects. On the one hand, the tortuous structure formed by the first sealing part 210 and the second sealing part 310 can generate resistance to the high-temperature flue gas, reducing its flow velocity, decreasing its flow rate, and making it difficult to escape. On the other hand, when the high-temperature flue gas flows through the gap between the first sealing part 210 and the second sealing part 220, the thermal expansion material of the inner core 212b expands due to heat, pushing the outer shell 212a to deform and abut against the side wall of the second sealing part 220, preventing the flue gas from escaping and achieving effective sealing.

[0044] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0045] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination manners.

[0046] Furthermore, any combination can be made between various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A sealing structure for the small oven door on the machine side of a top-loading coke oven, characterized in that, Comprising: A connecting device, the connecting device includes a cylindrical main body and a first cavity located inside the cylindrical main body. A first sealing portion is provided at the lower end of the cylindrical main body. The first sealing portion includes a first section extending horizontally towards the first cavity and a second section extending vertically downwards. The second section includes an outer shell and an inner core provided inside the outer shell. The outer shell is made of an elastic material, and the inner core includes a thermally expandable material; A small furnace door brick groove, the small furnace door brick groove includes a cylindrical brick groove main body and a second cavity located inside the cylindrical brick groove main body. A second sealing portion is provided at the upper end of the brick groove main body. The second sealing portion includes a horizontal section extending horizontally towards the second cavity and a vertical section extending vertically upwards. The horizontal section, the vertical section and the side wall of the brick groove main body enclose a receiving groove, and the receiving groove is used to receive the first sealing portion and the two are dimensionally matched to form a seal.

2. The side small furnace door sealing structure of the top-loading coke oven according to claim 1, characterized in that, The outer shell includes two legs spaced apart from each other and a connecting portion connecting the bottoms of the two legs together. The inner core is sandwiched between the two legs.

3. The side small furnace door sealing structure of the top charging coke oven according to claim 2, characterized in that, The top of the leg of the outer shell closer to the inside in the horizontal direction is fixedly connected to the first section, and the leg of the outer shell closer to the outside in the horizontal direction can move horizontally.

4. The side small furnace door sealing structure of the top-loading coke oven according to claim 1, characterized in that, The first section is integrally formed with the cylindrical main body.

5. The side small furnace door sealing structure of the top charging coke oven according to claim 1, characterized in that, The outer shell is made of an elastic metal plate.

6. The side small furnace door sealing structure of the top charging coke oven according to claim 1, characterized in that, The outer shell is bent from a galvanized spring steel plate with a thickness of 1.5 - 2.5 mm.

7. The side small furnace door sealing structure of the top charging coke oven according to claim 6, characterized in that, The inner core includes a flexible outer layer and a thermally expandable material accommodated inside the flexible outer layer.

8. The side small furnace door sealing structure of the top-loading coke oven according to claim 7, characterized in that, The thermally expandable material is a sodium silicate-based material.

9. The side small furnace door sealing structure of the top-loading coke oven according to claim 1, characterized in that, The horizontal section and the vertical section are integrally formed with the brick groove main body.

10. The side small furnace door sealing structure of the top charging coke oven according to claim 1, characterized in that, The connecting device further includes a first outer flange provided at the lower end of the cylindrical main body and extending laterally outwards, and the small furnace door brick groove further includes a second outer flange provided at the lower end of the brick groove main body and extending laterally outwards. The first outer flange and the second outer flange are fixedly connected by fasteners.

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