Reconversion structure of heat absorption tower

Abstract

The utility model relates to the field of molten salt pump supports, and discloses a heat absorption tower re-conversion structure which comprises an inner surrounding column conversion node, an outer surrounding column conversion node, an inner surrounding annular connection beam, an outer surrounding annular connection beam and an inner and outer surrounding connection beam. The inner surrounding column conversion node and the outer surrounding column conversion node are erected on the original conversion truss; the peripheral column transfer nodes are evenly distributed along the inner side of the heat absorption tower in the annular direction and arranged on the inner side of the heat absorption tower, and every two peripheral column transfer nodes adjacent in the annular direction are connected through the corresponding peripheral annular connection beam. The inner surrounding column conversion nodes are evenly distributed in the circumferential direction of the inner side of the outer surrounding column conversion node and arranged on the inner side of the outer surrounding column conversion node, and every two inner surrounding column conversion nodes adjacent in the circumferential direction are connected through the corresponding inner surrounding annular connection beam. The outer surrounding column switching nodes are connected with the inner surrounding column switching nodes through the inner and outer surrounding connection beams. According to the mechanical structure, the original truss is utilized, stable support is provided for the column foot of the heat collector, and a tiny deflection angle is provided.

Description

Technical Field

[0001] This utility model relates to the field of molten salt pump support, and in particular to a heat absorption tower re-conversion structure. Background Technology

[0002] With the increasing global demand for renewable energy, solar energy, as a clean and renewable energy source, has received widespread attention for its development and utilization. In the field of solar thermal power generation, molten salt tower solar thermal power plants, with their advantages of high efficiency, stability, and the ability to generate electricity around the clock, are gradually becoming an important development direction for solar thermal power generation technology. These power plants use molten salt as the core heat conduction and storage medium. By concentrating the high-temperature heat energy generated by sunlight to heat the molten salt, they drive steam turbines or heat engines to generate electricity, achieving a highly efficient conversion of solar energy into electrical energy.

[0003] However, in the actual operation of tower solar thermal power plants, the receiver tower collector, as one of the key pieces of equipment, directly affects the efficiency and reliability of the entire power generation system. However, after project completion, the need for a slight deflection of the collector's azimuth angle to increase light collection efficiency has become a common technical challenge. Currently, no specific solutions exist for these problems, making the modification of the collector system difficult.

[0004] In-depth analysis reveals that, as a novel form of power generation, tower solar thermal power plants face significant challenges in modifying their collector steel structures. This is due to the direct suspension of equipment such as tube panels, resulting in lengthy remanufacturing and installation cycles. Furthermore, the existing conversion layer trusses are constrained by the concrete section of the absorber tower, hindering modification. The high height, high temperature, and high wind pressure at the top of the absorber tower's concrete section, coupled with its high structural importance, make drastic modifications difficult. Existing methods and experience are limited, making it challenging to effectively address these issues. Utility Model Content

[0005] To address the existing problems, this utility model provides a heat absorption tower re-conversion structure, which aims to improve the practicality of the conversion system, effectively reduce the impact of modification on the original structure, make full use of the existing structure, and ensure the stable operation of the heat collection system.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A heat-absorbing tower re-conversion structure includes an inner column conversion node, an outer column conversion node, an inner annular connecting beam, an outer annular connecting beam, and an inner-outer-outer connecting beam. The inner and outer column conversion nodes are erected on the original conversion truss and are used to support the collector column bases above. The outer column conversion nodes are evenly distributed circumferentially along the inner side of the heat-absorbing tower and are located inside the heat-absorbing tower. Two circumferentially adjacent outer column conversion nodes are connected by the outer annular connecting beam. The inner column conversion nodes are evenly distributed circumferentially along the inner side of the outer column conversion nodes and are located inside the outer column conversion nodes. Two circumferentially adjacent inner column conversion nodes are connected by the inner annular connecting beam. The outer column conversion nodes are connected to the inner column conversion nodes by the inner-outer-outer connecting beam.

[0008] As a further improvement of this utility model, the top plane elevations of the inner column transition node, the outer column transition node, the inner ring connecting beam, the outer ring connecting beam, and the inner and outer ring connecting beams are consistent, forming a top plane; a reinforced concrete top floor slab is provided on the top plane, and the top floor slab is used to support the collector column base.

[0009] As a further improvement of this utility model, the outer column conversion node includes an outer connecting base plate, an outer lower radial stiffening plate, and an outer lower circumferential stiffening plate; the outer connecting base plate is bolted to the upper chord of the original conversion truss; the outer lower radial stiffening plate and the outer lower circumferential stiffening plate are arranged along the radial and circumferential directions of the outer column, respectively, and are perpendicularly connected to the outer connecting base plate.

[0010] As a further improvement of this utility model, it also includes an outer box-shaped conversion structure; the outer box-shaped conversion structure is a steel conical column structure, and the outer box-shaped conversion structure transitionally connects the outer column conversion node and the outer ring connecting beam.

[0011] As a further improvement of this utility model, the outer column conversion node also includes an upper outer radial stiffening plate, which is connected to a lower outer radial stiffening plate and extends radially to the base of the collector column, thereby strengthening the structural strength of the node below the corner of the collector column base.

[0012] As a further improvement of this utility model, the lower elevations of the inner column transition node and the outer column transition node are consistent, forming a bottom plane. The elevation of the bottom plane is lower than the bottom of the inner ring connecting beam, the outer ring connecting beam and the inner and outer connecting beams. A reinforced concrete bottom floor slab is provided below the bottom plane, and the bottom floor slab is erected on the original transition truss.

[0013] As a further improvement of this utility model, the inner column conversion node is connected to two adjacent outer column conversion nodes in the circumferential direction through inner and outer peripheral connecting beams, and the included angle between the two inner and outer peripheral connecting beams is less than or equal to 90°.

[0014] As a further improvement of this utility model, the inner column conversion node includes an inner connecting base plate, an inner lower radial stiffening plate, and an inner lower circumferential stiffening plate; the inner connecting base plate is bolted to the upper chord of the original conversion truss; the inner lower radial stiffening plate and the inner lower circumferential stiffening plate are arranged along the radial and circumferential directions of the inner column, respectively, and are perpendicularly connected to the inner connecting base plate.

[0015] As a further improvement of this utility model, it also includes an inner box-shaped conversion structure; the inner box-shaped conversion structure is a steel conical column structure, and the inner box-shaped conversion structure transitionally connects the inner column conversion node and the inner ring connecting beam.

[0016] As a further improvement of this utility model, the inner column conversion node also includes an upper radial stiffening plate connected to a lower radial stiffening plate, which extends radially to the base of the collector column to strengthen the structural strength of the node below the corner of the collector column.

[0017] This utility model has the following beneficial effects:

[0018] This invention provides a stable support structure for the collector column base by setting inner and outer column transition nodes and corresponding connecting beams, thereby enhancing the overall stability and load-bearing capacity of the heat absorption tower. The inner and outer column transition nodes act at the original truss transition layer stress nodes, and the upper part supports the collector column base, so that the original structural stress form remains unchanged. The outer and inner ring connecting beams connect the inner and outer column transition nodes respectively, transferring the bending moment from the node to the member, making the inner and outer column transition nodes more stable.

[0019] Preferably, the top floor slab ensures that the tops of all transition nodes and connecting beams are on the same horizontal plane, facilitating the installation and positioning of the collector column bases; the reinforced concrete top floor slab increases the overall lateral stiffness of the structure, further enhancing the integrity and stability of the structure.

[0020] Preferably, the combination of the outer connecting base plate, the outer lower radial stiffening plate, and the outer lower circumferential stiffening plate enhances the structural strength and stability of the outer column conversion node, enabling it to better withstand the load from the collector column base.

[0021] Preferably, as a steel conical column structure, the outer box-type transition structure can effectively connect the outer column transition nodes and the outer ring connecting beam, enhancing the overall continuity and load-bearing capacity of the structure.

[0022] Preferably, the outer upper radial stiffening plate can strengthen the structural strength of the node below the corner of the collector column foot, ensuring the stability and safety of the structure after the corner.

[0023] Preferably, the formation of the bottom plane ensures the uniformity and stability of all transition nodes at the bottom; the reinforced concrete bottom slab further enhances the bottom support capacity of the structure; the reinforced concrete bottom slab increases the overall lateral stiffness of the structure, further enhancing the integrity and stability of the structure.

[0024] Preferably, the inner and outer perimeter connecting beams connect the inner and outer perimeter transition column nodes, which greatly improves the overall structure and stability; the reasonable angle design ensures that the inner and outer perimeter connecting beams can effectively transfer the load, while avoiding excessive stress concentration and enhancing the overall stability of the structure.

[0025] Preferably, similar to the outer column transition node, the combination of the inner connecting base plate, the inner lower radial stiffening plate, and the inner lower circumferential stiffening plate enhances the structural strength and stability of the inner column transition node.

[0026] Preferably, the inner box-shaped transition structure, as a steel conical column structure, can effectively transition and connect the inner column transition node and the inner ring connecting beam, further enhancing the overall continuity and load-bearing capacity of the structure.

[0027] Preferably, similar to the outer upper radial stiffening plate, the inner upper radial stiffening plate can strengthen the structural strength of the node below the corner of the collector column foot, ensuring the stability and safety of the structure after the corner. Attached Figure Description

[0028] The accompanying drawings described herein are for illustrative purposes only and do not limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. In the drawings:

[0029] Figure 1 This is a schematic diagram of the conversion structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the conversion structure of this utility model.

[0031] Figure 3 This is a schematic diagram of the outer column node of this utility model;

[0032] Figure 4 yes Figure 3 Vertical longitudinal section view;

[0033] Figure 5 yes Figure 4 Horizontal cross-section view;

[0034] Figure 6 This is a schematic diagram of the inner column node of this utility model;

[0035] Figure 7 yes Figure 6 Vertical longitudinal section view;

[0036] Figure 8 yes Figure 7 A horizontal cross-sectional view.

[0037] The components are as follows: 1. Inner column transition node; 2. Outer column transition node; 3. Inner ring connecting beam; 4. Outer ring connecting beam; 5. Inner and outer ring connecting beams; 6. Outer connecting base plate; 7. Lower outer radial stiffening plate; 8. Lower outer ring stiffening plate; 9. Outer box-type transition structure; 10. Upper outer radial stiffening plate; 11. Inner connecting base plate; 12. Lower inner radial stiffening plate; 13. Lower inner ring stiffening plate; 14. Inner box-type transition structure; 15. Upper inner radial stiffening plate; 16. Original transition truss; 17. Heat absorption tower; 18. Bottom floor slab; 19. Top floor slab; 20. Bolt holes of outer connecting base plate; 21. Bolt holes of inner connecting base plate; 22. Outer connecting bolts of original truss; 23. Inner connecting bolts of original truss. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0039] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] Example

[0042] like Figure 1 The illustrated heat absorption tower re-conversion structure includes an inner column conversion node 1 and an outer column conversion node 2 erected on the original conversion truss 16. The inner and outer column conversion nodes 2 are used to support the collector column bases above, as well as an inner annular connecting beam 3, an outer annular connecting beam 4, and an inner and outer connecting beam 5. The outer column conversion nodes 2 are evenly distributed circumferentially along the inner side of the heat absorption tower 17 and are located inside the heat absorption tower 17. Two circumferentially adjacent outer column conversion nodes 2 are connected by the outer annular connecting beam 4. The inner column conversion nodes 1 are evenly distributed circumferentially along the inner side of the outer column conversion nodes 2 and are located inside the outer column conversion nodes 2. Two circumferentially adjacent inner column conversion nodes 1 are connected by the inner annular connecting beam 3. The outer column conversion nodes 2 are connected to the inner column conversion nodes 1 by the inner and outer connecting beams 5.

[0043] like Figure 1 As shown, the inner column conversion node 1 is connected to two adjacent outer column conversion nodes 2 in the circumferential direction through inner and outer peripheral connecting beams 5, and the included angle between the two inner and outer peripheral connecting beams 5 is less than or equal to 90°.

[0044] like Figure 2 As shown, the top plane elevations of the inner column transition node 1, outer column transition node 2, inner ring connecting beam 3, outer ring connecting beam 4, and inner and outer ring connecting beam 5 are consistent, forming a top plane; a reinforced concrete top floor slab 19 is set on the top plane, and the top floor slab 19 is used to support the collector column base.

[0045] like Figure 2 As shown, the lower elevations of the inner column transition node 1 and the outer column transition node 2 are consistent, forming a bottom plane. The elevation of the bottom plane is lower than the bottom of the inner ring connecting beam 3, the outer ring connecting beam 4, and the inner and outer connecting beams 5. There is a gap between the bottom plane and the bottom of the three, which can increase the internal airflow and keep the temperature and humidity consistent between the inner and outer column transition nodes. This prevents the inner ring connecting beam 3, the outer ring connecting beam 4, and the inner and outer connecting beams 5 from dividing the space between the upper and lower floor slabs. A reinforced concrete bottom floor slab 18 is set below the bottom plane, and the bottom floor slab 18 is erected on the original transition truss 16.

[0046] like Figure 3 As shown, the outer column conversion node 2 includes an outer connecting base plate 6, an outer lower radial stiffening plate 7, and an outer lower circumferential stiffening plate 8. The outer connecting base plate 6 is provided with outer connecting base plate bolt holes 20, and the outer connecting base plate 6 is bolted to the upper chord of the original conversion truss 16. The outer lower radial stiffening plate 7 and the outer lower circumferential stiffening plate 8 are arranged along the radial and circumferential directions of the outer column, respectively, and are perpendicularly welded to the outer connecting base plate 6. Concrete can be laid in the frame formed by the outer connecting base plate 6, the outer lower radial stiffening plate 7, and the outer lower circumferential stiffening plate 8.

[0047] like Figure 3 As shown, the heat absorption tower re-conversion structure in this embodiment also includes an outer box-shaped conversion structure 9; the outer box-shaped conversion structure 9 is a steel conical column structure, and the outer box-shaped conversion structure 9 transitionally connects the outer column conversion node 2 and the outer ring connecting beam 4. Figure 4 yes Figure 3 Vertical longitudinal section view.

[0048] like Figure 4 As shown, the outer column conversion node 2 also includes an outer upper radial stiffening plate 10, which is connected to the outer lower radial stiffening plate and extends radially to the base of the collector column to strengthen the structural strength of the node below the corner of the collector column. Figure 5 yes Figure 4 A horizontal cross-sectional view.

[0049] like Figure 5 As shown, the lower outer radial stiffening plate 7 and the lower outer circumferential stiffening plate 8 are perpendicularly staggered to each other. The orientation of some of the lower outer circumferential stiffening plates 8 is consistent with or at 45° to the orientation of the stiffening plates in the original transfer truss 16. This design can increase the staggered arrangement between stiffening plates and optimize the stress and torque resistance in multiple directions. The outer connecting bolts 22 of the original truss pass through the bolt holes 20 of the outer connecting base plate to connect the outer connecting base plate 6 to the upper chord of the original transfer truss 16.

[0050] like Figure 6 As shown, the inner column conversion node 1 includes an inner connecting base plate 11, an inner lower radial stiffening plate 12, and an inner lower circumferential stiffening plate 13; the inner connecting base plate 11 is bolted to the upper chord of the original conversion truss 16; the inner lower radial stiffening plate 12 and the inner lower circumferential stiffening plate 13 are arranged along the radial and circumferential directions of the inner column, respectively, and are perpendicularly connected to the inner connecting base plate 11. Figure 7 yes Figure 6 Vertical longitudinal section view.

[0051] like Figure 7As shown, the inner column conversion node 1 also includes an upper radial stiffening plate 15, which is connected to the lower radial stiffening plate 12 and extends radially to the base of the collector column to strengthen the structural strength of the node below the corner of the collector column. Figure 8 yes Figure 7 A horizontal cross-sectional view.

[0052] The heat absorption tower re-conversion structure in this embodiment also includes an inner box-shaped conversion structure 14; the inner box-shaped conversion structure 14 is a steel conical column structure, and the inner box-shaped conversion structure 14 transitionally connects the inner column conversion node 1 and the inner ring connecting beam 3.

[0053] like Figure 8 As shown, the lower radial stiffening plate 12 and the lower circumferential stiffening plate 13 of the inner circumference are perpendicularly intersecting each other; the inner circumference connecting bolts 23 of the original truss pass through the bolt holes 21 of the inner circumference connecting base plate, connecting the inner circumference connecting base plate 11 to the upper chord of the original conversion truss 16. Concrete can be installed in the frame formed by the inner circumference connecting base plate 11, the lower radial stiffening plate 12, and the lower circumferential stiffening plate 13.

[0054] This invention introduces a heat absorption tower re-conversion structure design, closely integrating the upper and lower structures. Employing a corbel-like principle, it enhances the load-bearing capacity of the entire conversion system. Both the inner ring-shaped connecting beam 3 and the outer ring-shaped connecting beam 4 are arc-shaped structures, allowing them to better conform to the overall shape and dimensions of the heat absorption tower. Simultaneously, the connecting beams effectively disperse and absorb the bending moment transmitted from the upper collector to the lower structure, reducing the adverse effects of bending moment on the truss structure and ensuring a more rational and direct stress distribution on the existing structure. Furthermore, the pouring of double-layer reinforced concrete floor slabs significantly strengthens the lateral stiffness of the structure, resulting in a tighter connection between the upper and lower structures and increasing the overall structural rigidity.

[0055] This invention introduces a heat-absorbing tower and re-conversion structure design, connecting the upper and lower structures to better integrate them into a unified whole. This not only improves the operating efficiency and economy of the power plant but also reduces retrofitting time, which is of great significance for promoting the further development and application of tower solar thermal power generation technology.

[0056] The above embodiments are merely one of the implementation methods for achieving the technical solution of this utility model. The scope of protection claimed by this utility model is not limited to this embodiment, but also includes any variations, substitutions, and other implementation methods that are easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A heat absorption tower re-conversion structure, characterized by, The inner column conversion node (1), the outer column conversion node (2), the inner ring contact beam (3), the outer ring contact beam (4) and the inner-outer contact beam (5) are uniformly distributed along the inner side of the outer column conversion node (2), and two annularly adjacent inner column conversion nodes (1) are connected by the inner ring contact beam (3); the outer column conversion node (2) is connected with the inner column conversion node (1) by the inner-outer contact beam (5).

2. A re-conversion structure for a heat absorption tower according to claim 1, wherein The top plane elevations of the inner column conversion node (1), the outer column conversion node (2), the inner ring contact beam (3), the outer ring contact beam (4) and the inner-outer contact beam (5) are consistent, forming a top plane; a layer of reinforced concrete top floor (19) is arranged on the top plane, and the top floor (19) is used for erecting the collector column foot.

3. A re-conversion structure for a heat absorption tower according to claim 1, wherein The outer column conversion node (2) comprises an outer connection bottom plate (6), an outer lower radial stiffening plate (7) and an outer lower annular stiffening plate (8); the outer connection bottom plate (6) is connected with the upper chord of the original conversion truss (16) by bolts; the outer lower radial stiffening plate (7) and the outer lower annular stiffening plate (8) are arranged along the outer column radial direction and the annular direction respectively and are connected perpendicularly with the outer connection bottom plate (6).

4. A re-conversion structure for a heat absorption tower according to claim 3, wherein The outer box-shaped conversion structure (9) is a steel conical column structure, and the outer box-shaped conversion structure (9) is connected with the outer column conversion node (2) and the outer ring contact beam (4).

5. A re-conversion structure for a heat absorption tower according to claim 4, wherein The outer column conversion node (2) further comprises an outer upper radial stiffening plate (10), which is connected with the outer lower radial stiffening plate (7) and extends radially to the lower part of the collector column foot, and is used for strengthening the structural strength of the node below the corner of the collector column foot.

6. A re-conversion structure for a heat absorption tower according to claim 1, wherein The lower elevations of the inner column conversion node (1) and the outer column conversion node (2) are consistent, forming a bottom plane, and the bottom plane is lower than the bottoms of the inner ring contact beam (3), the outer ring contact beam (4) and the inner-outer contact beam (5); a layer of reinforced concrete bottom floor (18) is arranged below the bottom plane and is erected on the original conversion truss (16).

7. A re-conversion structure for a heat absorption tower according to claim 5, wherein The inner column conversion node (1) is connected with two annularly adjacent outer column conversion nodes (2) by the inner-outer contact beam (5), and the included angle of the two inner-outer contact beams (5) is less than or equal to 90°.

8. A re-conversion structure for a heat absorption tower according to claim 1, wherein The inner column conversion node (1) comprises an inner connecting bottom plate (11), an inner lower radial stiffening plate (12) and an inner lower annular stiffening plate (13); the inner connecting bottom plate (11) is bolted with the upper chord of the original conversion truss (16); the inner lower radial stiffening plate (12) and the inner lower annular stiffening plate (13) are respectively arranged along the radial direction and the annular direction of the inner column and are perpendicularly connected with the inner connecting bottom plate (11).

9. A re-conversion structure for a heat absorption tower according to claim 8, wherein Further comprising an inner box-type conversion structure (14); the inner box-type conversion structure (14) is a steel conical column structure, and the inner box-type conversion structure (14) is transitionally connected with the inner column conversion node (1) and the inner annular contact beam (3).

10. A re-conversion structure for a heat absorption tower according to claim 9, wherein The inner column conversion node (1) further comprises an inner upper radial stiffening plate (15), which is connected with the inner lower radial stiffening plate (12) and extends radially to the lower part of the collector column foot, for strengthening the structural strength of the node below the corner of the collector column foot.

Images