A wind distribution plate expansion structure
By setting the main body and pouring layer segmentation, the expansion space is formed, and the sealing component is used to avoid leakage, which solves the problem of inconsistent thermal expansion of the layer and the furnace guard. Improvement.
Patent Information
- Application Number
- CN202411649767.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2044-11-19
AI Technical Summary
The inconsistency of the air cloth plate during hot and cold expansion leads to failure of the castable material. Especially when the cross-sectional size is large, it is necessary to consider the problem of inconsistency between the air cloth plate expansion and the furnace guard plate expansion.
By setting the main body of the cloth windplate into the first cloth and the second cloth, the first gap is set up in the middle, combined with the segment setting of the pouring layer to form a second gap, so that the main body and pouring of the cloth windboard and pouring materials are made. The layers have room for expansion, compensate the heat expansion amount, and avoid leakage through a seal component.
Effectively solve the problem of inconsistent thermal expansion of the layer and the furnace guard, avoid the failure of the pouring layer, and improve the use of sealing performance and expansion space through the design of the alien section and seal components.
Smart Images
Figure CN119163952B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of hot blast furnaces, in particular to an air distribution plate expansion structure. Background Art
[0002] The furnace part of the insulated CFB boiler is made of refractory castables, thermal insulation castables, and thermal insulation materials. The expansion of the boiler in hot and cold states changes very little, but the air distribution plate can only be partially applied with refractory castables due to structural reasons. The expansion of the air distribution plate in hot and cold states changes greatly, especially when the cross-sectional size of the air distribution plate is large. It is necessary to consider the problem of castable failure caused by the inconsistent expansion of the air distribution plate and the furnace guard plate. Summary of the invention
[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an air distribution plate expansion structure.
[0004] The purpose of the present invention is achieved through the following technical solution: an air distribution plate expansion structure, comprising:
[0005] An air distribution plate body, the air distribution plate body comprising a first air distribution plate and a second air distribution plate, a first gap being defined between the first air distribution plate and the second air distribution plate, and a sealing assembly for sealing the first gap being disposed between the first air distribution plate and the second air distribution plate;
[0006] Casting material layers, the casting material layers comprising a first casting material layer and a second casting material layer respectively arranged on the first air distribution plate and the second air distribution plate, and a second gap is provided between the first casting material layer and the second casting material layer;
[0007] The second gap includes a transverse gap portion and a vertical gap portion, the ends of the two vertical gap portions are respectively connected to the two ends of the transverse gap portion, and the two vertical gap portions extend to the top and the bottom of the casting material layer respectively.
[0008] The present invention divides the air distribution plate body into sections of a first air distribution plate and a second air distribution plate, so that the air distribution plate body forms a first gap, and the castable layer is divided into sections corresponding to the air distribution plate body to form a second gap, so that both the air distribution plate body and the castable layer have space for expansion, so as to compensate for the inconsistent thermal expansion between the air distribution plate and the furnace guard plate, and avoid failure of the castable layer of the air distribution plate. At the same time, the present invention forms a special-shaped cross-section through the transverse gap part and the vertical gap part in the second gap, so as to avoid the air distribution plate body being directly washed by high-temperature flue gas, and also avoid dust particles accumulating on the sealing component to limit the expansion of the castable layer. Finally, air leakage is avoided by the sealing component.
[0009] In some embodiments, the sealing assembly includes a sealing cover plate, which is disposed between the first air distribution plate and the second air distribution plate, and covers the first gap. By disposing the sealing cover plate, the first gap is covered to prevent air leakage in the first gap.
[0010] In some embodiments, one end of the sealing cover plate is fixedly connected to the first air distribution plate, and the other end is in sliding contact with the second air distribution plate, and the sealing cover plate covers the first gap. By making the sealing cover plate in sliding contact with the second air distribution plate, the sealing cover plate and the second air distribution plate have a sealing effect and can slide relative to each other, so that the first air distribution plate and the second air distribution plate can move relative to each other when expanding.
[0011] In some embodiments, the sealing assembly further comprises a first L-shaped shield plate, one end of which is vertically fixedly disposed on the second air distribution plate, a gap is formed between the vertically disposed end of the first L-shaped shield plate and the end of the sealing cover plate, and one end of the first L-shaped shield plate is horizontally disposed and extends to the top of the sealing cover plate. The first L-shaped shield plate and the sealing cover plate can slide relative to each other through the gap between the vertical portion of the first L-shaped shield plate and the sealing cover plate, thereby allowing the first air distribution plate and the second air distribution plate to have space for expansion, and the first L-shaped shield plate further improves the sealing performance of the first gap.
[0012] In some embodiments, the horizontal end of the first L-shaped shield plate extends in the horizontal direction to the position of the first air distribution plate to completely cover the sealing cover plate and there is a gap between the first L-shaped shield plate and the sealing cover plate. The first L-shaped shield plate completely covers the sealing cover plate to improve the sealing performance.
[0013] In some embodiments, the second gap extends to a horizontal end of the first L-shaped shield. The second gap extends to a horizontal end of the first L-shaped shield.
[0014] In some embodiments, the sealing assembly further includes a second L-shaped shielding plate, one end of which is vertically fixedly disposed on the first air distribution plate, and a gap is provided between the vertical end of the second L-shaped shielding plate and the end of the horizontal end of the first L-shaped shielding plate. The second L-shaped shielding plate further improves the sealing performance of the sealing assembly.
[0015] In some embodiments, the horizontal end of the second L-shaped shield extends to the position of the horizontal end of the first L-shaped shield in the horizontal direction to cover the end of the horizontal end of the first L-shaped shield, and there is a gap between the horizontal end of the second L-shaped shield and the horizontal end of the first L-shaped shield. The gap between the first L-shaped shield and the second L-shaped shield allows the two to move relative to each other.
[0016] In some embodiments, a slightly expandable plastic is disposed in the gap between the first L-shaped shield and the second L-shaped shield, and the slightly expandable plastic can block the gap between the first L-shaped shield and the second L-shaped shield, further improving the sealing performance of the sealing assembly.
[0017] In some embodiments, the sealing cover plate is connected to the first air distribution plate by welding; the first L-shaped shield plate is connected to the second air distribution plate by welding; and the second L-shaped shield plate is connected to the first air distribution plate by welding.
[0018] The present invention has the following advantages:
[0019] The present invention provides space for expansion and deformation of the air distribution plate and the castable layer when heated by means of the first gap between the first air distribution plate and the second air distribution plate and the second gap between the first castable layer and the second castable layer; and through the transverse gap portion of the second gap, the smoke will not directly flush the air distribution plate body, while preventing dust particles from accumulating on the sealing component to restrict the expansion of the castable layer; finally, through the sealing component, air leakage is avoided while the air distribution plate body can expand. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural schematic diagram of the expansion structure of the air distribution plate of the present invention;
[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0022] In the figure: 11, first air distribution plate; 12, second air distribution plate; 2, first gap; 31, sealing cover plate; 32, first L-shaped shield plate; 33, second L-shaped shield plate; 41, first casting material layer; 42, second casting material layer; 5, second gap; 51, vertical gap portion; 52, horizontal gap portion. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.
[0024] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0025] like Figure 1 and Figure 2 As shown, an air distribution plate expansion structure includes:
[0026] An air distribution plate body, the air distribution plate body comprising a first air distribution plate 11 and a second air distribution plate 12, a first gap 2 being provided between the first air distribution plate 11 and the second air distribution plate 12, and a sealing component for sealing the first gap 2 being provided between the first air distribution plate 11 and the second air distribution plate 12;
[0027] Casting material layer, the casting material layer comprises a first casting material layer 41 and a second casting material layer 42 respectively arranged on the first air distribution plate 11 and the second air distribution plate 12, and a second gap 5 is formed between the first casting material layer 41 and the second casting material layer 42;
[0028] The second gap 5 includes a transverse gap portion 52 and a vertical gap portion 51 , the ends of the two vertical gap portions 51 are respectively connected to the two ends of the transverse gap portion 52 , and the two vertical gap portions 51 extend to the top and the bottom of the casting material layer respectively.
[0029] Specifically, in this embodiment, a bent second gap 5 is formed by setting a transverse gap portion 52 and a vertical gap portion 51. When the boiler is working, the flue gas will not directly scour the air distribution plate body at the bottom of the castable layer. In addition, since the transverse gap portion 52 is set, the transverse gap portion 52 can prevent dust particles from accumulating on the air distribution plate body, which may cause the castable layer to expand and fail.
[0030] In this embodiment, castable layers are provided on both the upper and lower surfaces of the air distribution plate body, the top and bottom surfaces of the first air distribution plate 11 are provided with a first castable layer 41, the top and bottom surfaces of the second air distribution plate 12 are provided with a second castable layer 42, and a sealing component is provided at both the upper and lower ends of the first gap 2 on the air distribution plate body. In this embodiment, the first gap 2 and the second gap 5 are provided on the air distribution plate body and the castable layer, respectively, so that the air distribution plate body and the castable layer can have space for expansion when they are heated and expanded; at the same time, a sealing component is provided on the air distribution plate body, and the sealing component is used to prevent air leakage in the first gap 2 when the air distribution plate expands due to heat.
[0031] Preferably, the sealing assembly includes a sealing cover plate 31, which is disposed between the first air distribution plate 11 and the second air distribution plate 12, and covers the first gap 2. The sealing cover plate 31 covers the first gap 2 to prevent air leakage in the first gap 2.
[0032] Preferably, one end of the sealing cover plate 31 is fixedly connected to the first air distribution plate 11, and the other end is in sliding contact with the second air distribution plate 12, and the sealing cover plate 31 covers the first gap 2. By fixing one end of the sealing cover plate 31 to the first air distribution plate 11 and slidingly overlapping the other end of the sealing cover plate 31 with the second air distribution plate 12, the first gap 2 can be kept sealed while both the first air distribution plate 11 and the second air distribution plate 12 can expand.
[0033] Preferably, the sealing assembly further comprises a first L-shaped shield plate 32, one end of which is vertically fixedly arranged on the second air distribution plate 12, a gap is formed between the vertically arranged end of the first L-shaped shield plate 32 and the end of the sealing cover plate 31, and one end of the first L-shaped shield plate 32 is horizontally arranged and extends to the top of the sealing cover plate 31. The first L-shaped shield plate 32 can shield the sealing cover plate 31, and at the same time, the gap between the first L-shaped shield plate 32 and the sealing cover plate 31 forms a narrow and long cavity, so that the air leaking from the sealing cover plate 31 is blocked, and the sealing performance of the sealing assembly is further improved.
[0034] Preferably, the horizontal end of the first L-shaped shield plate 32 extends in the horizontal direction to the position of the first air distribution plate 11 to completely cover the sealing cover plate 31 and there is a gap between the first L-shaped shield plate 32 and the sealing cover plate 31 .
[0035] Preferably, the second gap 5 extends to the horizontal end of the first L-shaped shield plate 32. In this embodiment, the first casting material layer 41 and the second casting material layer 42 are both in contact with the first L-shaped shield plate 32, wherein the first casting material layer 41 is in sliding contact with the horizontal end of the first L-shaped shield plate 32. The horizontal end of the first L-shaped shield plate 32 corresponds to the position of the vertical gap portion 51 on the casting material layer, which can prevent the flue gas entering the vertical gap portion 51 from directly scouring the sealing cover plate 31 and avoiding damage to the sealing cover plate 31.
[0036] Preferably, the sealing assembly further comprises a second L-shaped shield plate 33, one end of which is vertically fixedly arranged on the first air distribution plate 11, and a gap is provided between the vertical end of the second L-shaped shield plate 33 and the end of the horizontal end of the first L-shaped shield plate 32. By leaving a gap between the end of the horizontal end of the first L-shaped shield plate 32 and the vertical end of the second L-shaped shield plate 33, the first L-shaped shield plate 32 can move relative to the second L-shaped shield plate 33, thereby enabling the first air distribution plate 11 and the second air distribution plate 12 to move relative to each other when expanded.
[0037] Preferably, the horizontal end of the second L-shaped shield plate 33 extends in the horizontal direction to the position of the horizontal end of the first L-shaped shield plate 32 to cover the end of the horizontal end of the first L-shaped shield plate 32, and there is a gap between the horizontal end of the second L-shaped shield plate 33 and the horizontal end of the first L-shaped shield plate 32.
[0038] The second L-shaped baffle 33 covers the end of the horizontal part of the first L-shaped baffle 32, so that a labyrinth-structured cavity is formed between the sealing cover plate 31, the first L-shaped baffle 32 and the second L-shaped baffle 33, so that the air is blocked, further improving the sealing performance of the sealing structure.
[0039] Preferably, a slightly expandable plastic is provided in the gap between the first L-shaped shield plate 32 and the second L-shaped shield plate 33. The slightly expandable plastic can protect the first L-shaped shield plate 32 and the second L-shaped shield plate 33 from deformation, and seal the gap between the first L-shaped shield plate 32 and the second L-shaped shield plate 33, further improving the sealing performance of the sealing assembly.
[0040] Preferably, the sealing cover plate 31 is welded to the first air distribution plate 11; the first L-shaped shield plate 32 is welded to the second air distribution plate 12; and the second L-shaped shield plate 33 is welded to the first air distribution plate 11. Through welding, each component is firmly connected.
[0041] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the above-mentioned technical content without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the present invention without departing from the content of the technical solution of the present invention belong to the protection scope of the present technical solution.
Claims
1. An air distribution plate expansion structure, characterized in that: include: An air distribution plate body, the air distribution plate body comprising a first air distribution plate (11) and a second air distribution plate (12), a first gap (2) being provided between the first air distribution plate (11) and the second air distribution plate (12), and a sealing component for sealing the first gap (2) being provided between the first air distribution plate (11) and the second air distribution plate (12); Casting material layers, the casting material layers comprising a first casting material layer (41) and a second casting material layer (42) respectively arranged on the first air distribution plate (11) and the second air distribution plate (12), and a second gap (5) is provided between the first casting material layer (41) and the second casting material layer (42); The second gap (5) comprises a transverse gap portion (52) and a vertical gap portion (51), the ends of the two vertical gap portions (51) are respectively connected to the two ends of the transverse gap portion (52), and the two vertical gap portions (51) extend to the top and the bottom of the casting material layer respectively; The sealing assembly comprises a sealing cover plate (31), wherein the sealing cover plate (31) is arranged between the first air distribution plate (11) and the second air distribution plate (12), and the sealing cover plate (31) covers the first gap (2).
2. The air distribution plate expansion structure according to claim 1, characterized in that: One end of the sealing cover plate (31) is fixedly connected to the first air distribution plate (11), and the other end is in sliding contact with the second air distribution plate (12), and the sealing cover plate (31) covers the first gap (2).
3. The air distribution plate expansion structure according to claim 2, characterized in that: The sealing assembly further comprises a first L-shaped shield plate (32), one end of the first L-shaped shield plate (32) being vertically fixedly arranged on the second air distribution plate (12), a gap being provided between the vertically arranged end of the first L-shaped shield plate (32) and the end of the sealing cover plate (31), and one end of the first L-shaped shield plate (32) being horizontally arranged and extending to the top of the sealing cover plate (31).
4. The air distribution plate expansion structure according to claim 3, characterized in that: The horizontal end of the first L-shaped shielding plate (32) extends in the horizontal direction to the position of the first air distribution plate (11) to completely cover the sealing cover plate (31) and there is a gap between the first L-shaped shielding plate (32) and the sealing cover plate (31).
5. The air distribution plate expansion structure according to claim 4, characterized in that: The second gap (5) extends to the horizontal end of the first L-shaped shield (32).
6. The air distribution plate expansion structure according to claim 4, characterized in that: The sealing assembly further comprises a second L-shaped shielding plate (33), one end of the second L-shaped shielding plate (33) being vertically fixedly arranged on the first air distribution plate (11), and a gap being provided between the vertical end of the second L-shaped shielding plate (33) and the end of the horizontal end of the first L-shaped shielding plate (32).
7. The air distribution plate expansion structure according to claim 6, characterized in that: The horizontal end of the second L-shaped shield plate (33) extends in the horizontal direction to the position of the horizontal end of the first L-shaped shield plate (32) to cover the end of the horizontal end of the first L-shaped shield plate (32), and there is a gap between the horizontal end of the second L-shaped shield plate (33) and the horizontal end of the first L-shaped shield plate (32).
8. The air distribution plate expansion structure according to claim 7, characterized in that: A micro-expandable plastic is arranged in the gap between the first L-shaped shield (32) and the second L-shaped shield (33).
9. The air distribution plate expansion structure according to claim 6, characterized in that: The sealing cover plate (31) is connected to the first air distribution plate (11) by welding; the first L-shaped shielding plate (32) is connected to the second air distribution plate (12) by welding; and the second L-shaped shielding plate (33) is connected to the first air distribution plate (11) by welding.
Citation Information
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