A chimney arrangement of the wrap-around column type

Abstract

The utility model discloses a kind of flue arrangement structure of around column type, including the flue wallboard of constituting overall flue, the flue wallboard of upper end surface and lower end surface is respectively provided with the opening for passing through civil engineering steel column, flue is equipped with enclosure structure, enclosure structure is located the periphery of civil engineering steel column, the upper and lower ends of enclosure structure are respectively sealed with the opening of the flue wallboard of upper end surface and lower end surface Connection, to ensure that flue passes through civil engineering steel column while realizing normal use of flue.The utility model uses the enclosure structure of flow guide structure while not demolishing original civil building column, ensure the normal flow of flue gas, flue structure is stable.

Description

Technical Field

[0001] This utility model belongs to the field of flue optimization layout technology, specifically relating to a flue optimization layout structure with a surrounding column type. Background Technology

[0002] Ultra-low emission technology for flue gas from coal-fired power plants must consider both investment and energy-saving and emission-reduction benefits; it must consider both technological advancement and operational reliability; and it must consider both the long-term stability of ultra-low emissions and the ease of operation and maintenance in case of failure. Since ultra-low emission systems in coal-fired power plants are already in place, optimizing the existing flue layout during desulfurization and efficiency improvement retrofits is particularly important. For example, existing ultra-low emission systems may already have steel columns installed beneath them, limiting construction space for retrofit projects, and considering the safe operation of existing equipment and the high cost of retrofit investment. While the flue can be arranged at the location of the steel columns, how to pass the steel columns through the flue without affecting the normal flow of flue gas within the flue is a problem that needs to be studied. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide an optimized layout structure for a flue with a surrounding column type.

[0004] The specific technical solution is as follows:

[0005] An optimized layout structure for a flue around a column includes flue wall panels forming an integral flue. The upper and lower ends of the flue wall panels are respectively provided with openings for passing through a civil engineering steel column. An enclosure structure is provided inside the flue, located around the civil engineering steel column. The upper and lower ends of the enclosure structure are respectively sealed and connected to the openings of the flue wall panels on the upper and lower ends to ensure that the flue can be used normally while passing through the civil engineering steel column.

[0006] Furthermore, the enclosure structure is connected to the civil engineering steel columns by stiffening plates.

[0007] Furthermore, both ends of the enclosure structure facing the direction of flue gas inflow and outflow are flow guide structures.

[0008] Furthermore, the cross-section of the flow guiding structure is triangular, with an angle of 45-60°.

[0009] Furthermore, the enclosure structure is formed by welding steel panels end to end.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1) Low construction difficulty: The optimized flue layout structure of this utility model uses a column-encircling design for the flue around the earthen columns, which eliminates the need to demolish the original earthen columns and has no impact on the operation of existing equipment.

[0012] 2) Short renovation period: The flue is easy to manufacture, which shortens the renovation period;

[0013] 3) Low investment cost: No need to demolish existing civil engineering columns, thus not increasing civil engineering construction costs;

[0014] 4) Stable flue structure: Without demolishing the original earthen columns, the enclosing structure with a flow guiding structure ensures the normal flow of flue gas and the stability of the flue structure. Attached Figure Description

[0015] Figure 1 This is a top view of the present invention;

[0016] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0017] In the diagram: 1. Flue wall panel; 2. Steel column for civil engineering; 3. Enclosure structure; 31. Diversion structure; 4. Stiffening plate. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0019] like Figure 1 and Figure 2 As shown, an optimized layout structure for a flue with surrounding columns includes flue wall panels 1 forming an integral flue. The flue wall panels 1 are welded together. Multiple openings are provided on the upper and lower ends of the flue wall panels 1 for the passage of civil engineering steel columns 2, ensuring the steel columns 2 pass through the flue. Multiple enclosure structures 3 are provided inside the flue, located around the civil engineering steel columns 2. The upper and lower ends of the enclosure structures 3 are open, and their upper and lower ends are sealed and welded to the openings on the upper and lower ends of the flue wall panels 1, respectively. The enclosure structures 3 are formed by welding steel wall panels end-to-end, and the thickness of the steel wall panels is 6 mm. mm, the enclosure structure 3 is connected to the civil steel column 2 by multiple stiffening plates 4. One end of the stiffening plate 4 is pre-welded to the outside of the civil steel column 2. After the enclosure structure 2 is completed, it is connected to the other end of the stiffening plate 4 to reduce the impact of flue gas on the enclosure structure 3. Depending on the specific situation, one enclosure structure 3 can enclose one or two civil steel columns 2. Both ends of the enclosure structure 3 facing the flue gas inlet and outlet directions are guide structures 31. The cross-section of the guide structure 31 is triangular with an angle of 45-60° to ensure that the flue can pass through the civil steel column while achieving normal use of the flue.

Claims

1. An optimized layout structure for a flue gas duct around a column, characterized in that, The flue includes flue wall panels (1) that form the whole flue. The flue wall panels (1) on the upper and lower ends of the flue are respectively provided with openings for passing through the civil engineering steel column (2). The flue is provided with an enclosure structure (3). The enclosure structure (3) is located on the periphery of the civil engineering steel column (2). The upper and lower ends of the enclosure structure (3) are respectively sealed and connected to the openings of the flue wall panels (1) on the upper and lower ends to ensure that the flue can be used normally while passing through the civil engineering steel column (2).

2. The optimized layout structure of a flue around a column as described in claim 1, characterized in that, The enclosure structure (3) is connected to the civil engineering steel column (2) by stiffening plate (4).

3. The optimized layout structure of a flue around a column as described in claim 1, characterized in that, The two ends of the enclosure structure (3) facing the direction of flue gas inflow and outflow are both flow guide structures (31).

4. The optimized layout structure of a flue around a column as described in claim 3, characterized in that, The cross-section of the flow guiding structure (31) is triangular with an angle of 45-60°.

5. The optimized layout structure of a flue around a column as described in claim 1, characterized in that, The enclosure structure (3) is made of steel wall panels welded together end to end.

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