Enclosure structure of steel reticulated shell hyperbolic cooling tower

Abstract

The utility model relates to an enclosure structure of a steel reticulated shell hyperbolic cooling tower, a cooling tower main body consists of inclined upright posts and ring beams which are overlapped with an inclined generatrix of a tower body, the enclosure structure comprises wallboards, main purlines and secondary purlines, the inclined upright posts and the ring beams which are crossed with each other form triangular units, the upper and lower adjacent triangular units form rhombic units, and the rhombic units form rhombic units. Main purlines parallel to the ring beam are arranged in the rhombic units, secondary purlines parallel to the tower body inclined generatrix are arranged in the rhombic units, the two ends of the main purlines and the two ends of the secondary purlines are fixedly connected with the inclined stand columns respectively, the intersection points of the main purlines and the secondary purlines are fixedly connected, and the secondary purlines are fixedly connected with the ring beam; a standard unit is formed between every two adjacent inclined stand columns in the same direction, each standard unit comprises a plurality of rows of unit wallboards which are spliced with one another, the ends of the unit wallboards located in the row where the side is located are fixed to the inclined stand columns through components, and the adjacent ends of the unit wallboards are in lap joint and fixed to the secondary purlins. The inclined stand columns are used for directly bearing wind loads transmitted by the skin structure, and the steel consumption is reduced.

Description

Technical Field

[0001] The utility model relates to a cooling tower, in particular to an enclosure structure of a steel lattice shell hyperbolic cooling tower. Background Art

[0002] In the past decade, steel cooling towers have been widely used in thermal power plant projects. Studies have shown that compared with traditional concrete towers, steel towers have the advantages of convenient installation, low installation costs, and good structural seismic performance. A protective structure is usually set on the facade of the main structure of a hyperbolic steel cooling tower. The protective structure often adopts a purlin-skin structure system to ensure the airtightness of the cooling tower. The shape of a hyperbolic steel cooling tower usually adopts a complex spatial curved surface and a large height, which increases the difficulty of designing and installing the protective structure.

[0003] The tower body of the hyperbolic steel structure cooling tower is a hyperbolic parabola formed by rotating around the central axis with an oblique straight line as the generatrix, and its main structure is a space lattice shell structure composed of oblique pillars and ring beams that coincide with the oblique generatrix. In the prior art, the enclosure structure installation method for the hyperbolic steel structure cooling tower is as follows: a circle of main purlins that coincide with the straight generatrix of the tower body are evenly arranged along the circumference, and then secondary purlins are arranged in the horizontal plane between the main purlins, and finally the skin structure is installed on the main and secondary purlins. Although the above-mentioned enclosure structure can ensure the airtightness of the cooling tower, it does not fully utilize the supporting role of the oblique pillars in the main structure of the cooling tower, and it is necessary to additionally set the main purlins in the direction of the straight generatrix, which not only greatly increases the amount of steel used, but also increases the construction volume and construction difficulty, thereby affecting the economy and construction efficiency of the structure. Utility Model Content

[0004] In view of some shortcomings of the enclosure structure in the above-mentioned prior art, the utility model improves the design of the enclosure structure of a steel lattice shell hyperbolic cooling tower composed of inclined columns and ring beams that coincide with the inclined busbar of the tower body. The inclined columns are used to directly bear the wind load transmitted by the skin structure, and there is no need to additionally set up a main purlin system that coincides with the straight busbar, which greatly reduces the amount of steel used.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The invention discloses an enclosure structure of a steel grid shell hyperbolic cooling tower. The cooling tower comprises oblique columns coinciding with an oblique generatrix of a tower body and a ring beam connected to the intersection of the oblique columns. The enclosure structure comprises wall panels, main purlins and secondary purlins. The oblique columns and the ring beam intersecting each other form a triangular unit. The triangular units adjacent to each other form a rhombus unit. In the rhombus unit, the main purlin is arranged parallel to the ring beam, and the secondary purlin is arranged parallel to the oblique generatrix of the tower body. Both ends of the main purlin and the secondary purlin are respectively fixedly connected to the oblique columns, the intersection of the main purlin and the secondary purlin is fixedly connected, and the secondary purlin is fixedly connected to the ring beam. A standard unit is formed between two oblique columns adjacent to each other in the same direction. A standard unit comprises a plurality of columns of unit wall panels spliced ​​to each other. The ends of the unit wall panels in the columns on the sides are fixed to the oblique columns through components, and the adjacent ends between the unit wall panels are overlapped and fixed to the secondary purlins.

[0007] Furthermore, the secondary purlin is fixedly connected to the ring beam via a supporting circular tube.

[0008] Furthermore, the main purlins and secondary purlins are both made of H-shaped steel, and a first connecting plate is provided at the intersection of the main purlins and the secondary purlins, where the webs of two sections of secondary purlins are butted, and a second connecting plate is provided at the butt joint of the flanges of two sections of secondary purlins.

[0009] Furthermore, the flange outer wall of the secondary purlin is connected to the flange inner wall of the main purlin via a stiffening plate.

[0010] Furthermore, the secondary purlin adopts H-shaped steel, and a third connecting plate is arranged parallel to the flange of the secondary purlin at the connection between the secondary purlin and the inclined column, one end of the third connecting plate is welded to the inclined column, and the other end is welded to the flange of the secondary purlin, and a fourth connecting plate is arranged parallel to the web of the secondary purlin, one end of the fourth connecting plate is welded to the inclined column, and the other end is fixedly connected to the web of the secondary purlin.

[0011] Furthermore, the main purlin adopts H-shaped steel. At the connection between the main purlin and the inclined column, a first purlin support plate is arranged perpendicular to the web of the main purlin, and a second purlin support plate is arranged parallel to the web of the main purlin. One end of the second purlin support plate is welded to the inclined column, and the other end is fixedly connected to the web of the main purlin. One side of the first purlin support plate is welded to the inclined column, and the other side is welded to the second purlin support plate.

[0012] Furthermore, the connection node between the wall panel and the inclined column includes a U-shaped buckle groove, a toothed folding member, a receiving edge member, and a plug. The U-shaped buckle groove is fixed on the inclined column, and the end of the wall panel is fixedly connected to the U-shaped buckle groove by a self-tapping screw. A toothed folding member is provided on one side of the end of the wall panel, and the end of the wall panel is fixedly connected to the toothed folding member by a closed-type blind rivet; a plug and a receiving edge member are provided at the end of the wall panel, and the receiving edge member is fixedly connected to the end of the wall panel by a closed-type blind rivet, and the receiving edge member is fixedly connected to the U-shaped buckle groove by a self-tapping screw.

[0013] Furthermore, butyl tape is provided on the overlapping ends of the unit wall panels, and the overlapping ends are fixed to the flanges of the secondary purlins by self-tapping screws.

[0014] The enclosure structure designed by the utility model has the following advantages compared with the enclosure structure in the prior art:

[0015] (1) The wind load transmitted by the skin structure is directly borne by the inclined struts of the tower structure, without the need to set up an additional main purlin system that coincides with the straight busbar, which greatly reduces the amount of steel used in the structure and reduces the project cost and installation cost;

[0016] (2) The cooling tower skin system node has a simple structure and is easy to construct, which can effectively improve the installation efficiency of the enclosure structure;

[0017] (3) The cooling tower skin system nodes are very airtight, which effectively ensures the good use function of the cooling tower;

[0018] (4) The plugs used not only provide sufficient rigidity, but also consume a large amount of energy generated by structural vibration, thereby effectively improving the wind and earthquake resistance of the enclosing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the vertical arrangement of the purlins of the hyperbolic cooling tower in the embodiment;

[0020] Figure 2 for Figure 1 Schematic diagram of the main and secondary purlins at the diamond-shaped unit shown in ;

[0021] Figure 3 This is a schematic diagram of the connection node between the secondary purlin and the ring beam;

[0022] Figure 4 Schematic diagram of the connection nodes of the main and secondary purlins;

[0023] Figure 5 This is a schematic diagram of the connection node between the secondary purlin and the inclined column;

[0024] Figure 6 This is a schematic diagram of the connection node between the main purlin and the inclined column;

[0025] Figure 7 This is a schematic diagram of the arrangement of three columns of wall panels in a standard unit;

[0026] Figure 8 It is a cross-sectional schematic diagram of the connection node between the wall panel and the inclined column;

[0027] Fig. 9 It is a three-dimensional diagram of the joint between the wall panel and the inclined column;

[0028] Fig.10 It is a cross-sectional schematic diagram of the connection node at the overlap of the wall panels;

[0029] Fig.11 This is a three-dimensional diagram of the connection nodes at the overlap of wall panels.

[0030] Description of Figure Numbers:

[0031] 1. Oblique column; 2. Ring beam; 3. Main purlin; 4. Secondary purlin; 5. Supporting circular tube; 6. First connecting plate; 7. Second connecting plate; 8. Stiffening plate; 9. Third connecting plate; 10. Fourth connecting plate; 11. First purlin support plate; 12. Second purlin support plate; 13. First row of unit wall panels; 14. Second row of unit wall panels; 15. Third row of unit wall panels; 16. Wall panels; 17. U-shaped buckle groove; 18. Toothed folding member; 19. Receiving edge member; 20. Plug; 21. Self-tapping screws; 22. Closed-type blind rivets. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] This embodiment discloses a steel lattice shell hyperbolic cooling tower enclosure structure. Figure 1 As shown, the tower body of the cooling tower is a hyperbolic parabola formed by rotating around the central axis with an oblique straight line as the generatrix. The entire tower body is composed of an oblique column 1 and a ring beam 2, and the axis of the oblique column 1 coincides with the generatrix of the tower body. In this embodiment, the oblique columns 1 and the ring beam 2 are both made of round steel pipes. The tower body is formed from bottom to top by cross-connecting the oblique pillars 1 to form a plurality of X-shaped units, and a ring beam 2 is arranged at each intersection. The intersection of the oblique columns 1 is fixedly connected to the ring beam 2, and a protective structure is arranged on the outer facade of the tower body formed, and the protective structure is mainly composed of a wall panel 16, a main purlin 3 and a secondary purlin 4.

[0034] In order to facilitate the detailed description of the enclosure structure, Figure 1 As shown in the figure, the area between two adjacent inclined columns 1 in the same direction in the main structure of the tower is divided into a standard unit, and the main structure of the tower is composed of multiple standard units. The triangular grid formed by the two intersecting inclined columns 1 and the ring beam 2 is called a triangular unit, and the two adjacent triangular units above and below can be assembled into a rhombus, which is called a rhombus unit. Taking a rhombus unit as a unit, the setting of the primary and secondary purlins is described as follows: Figure 2As shown, in a rhombus unit, the main purlin 3 is arranged in a direction parallel to the ring beam 2, and the secondary purlin 4 is arranged in a direction parallel to the inclined generatrix of the tower body. Both ends of the main purlin 3 and the secondary purlin 4 are fixedly connected to the inclined column 1, and there is a cross connection node between the main purlin 3 and the secondary purlin 4. The secondary purlin 4 also involves a fixed connection node with the ring beam 2. In this embodiment, the main purlin 3 and the secondary purlin 4 are both made of H-shaped steel. The specific structures of the main and secondary purlin related connection nodes are described one by one below.

[0035] The connection node between the secondary purlin 4 and the ring beam 2 is as follows Figure 3 As shown, a supporting circular tube 5 is arranged between the flange of the secondary purlin 4 and the ring beam 2, one end of the supporting circular tube 5 is welded to the ring beam 2, a connecting plate is arranged on the outer wall of the flange of the secondary purlin 4, and the other end of the supporting circular tube 5 is welded to the connecting plate.

[0036] The main purlin 3 and the secondary purlin 4 intersect and connect at the node such as Figure 4 As shown, the intersection is formed by butting two sections of secondary purlins 4 and two sections of main purlins 3, wherein a first connecting plate 6 is arranged at the butt joint of the webs of the two sections of secondary purlins 4, and a second connecting plate 7 is arranged at the butt joint of the flanges of the two sections of secondary purlins 4, the butt joint is fixedly connected together by the two connecting plates, and the outer wall of the flange on one side of the secondary purlin 4 and the inner wall of the flange on one side of the main purlin 3 are connected by welding a stiffening plate 8.

[0037] The connection node between the secondary purlin 4 and the inclined column 1 is as follows Figure 5 As shown, a third connecting plate 9 is arranged along a direction parallel to the flange of the secondary purlin 4, so that one end of the third connecting plate 9 is welded to the inclined column 1, and the other end is welded to the flange of the secondary purlin 4; a fourth connecting plate 10 is arranged along a web parallel to the secondary purlin 4, so that one end of the fourth connecting plate 10 is welded to the inclined column 1, and the other end is fixedly connected to the web of the secondary purlin 4.

[0038] The connection node between the main purlin 3 and the inclined column 1 is as follows Figure 6 As shown, a triangular first purlin support plate 11 is arranged at the joint between the inclined column 1 and the main purlin 3, the first purlin support plate 11 is perpendicular to the web of the main purlin 3, and a second purlin support plate 12 is arranged in a direction parallel to the web of the main purlin 3, one end of the second purlin support plate 12 is welded to the inclined column 1, and the other end is fixedly connected to the web of the main purlin 3, the side of the first purlin support plate 11 is welded to the inclined column 1, and the bottom of the first purlin support plate 11 is welded to the second purlin support plate 12.

[0039] The wall panels in the enclosure structure are made of thick corrugated wall panels, such as Figure 7 As shown, the wall panels in a standard unit in this embodiment are formed by splicing three columns of unit wall panels together. Figure 7From left to right, the first column of unit wall panels 13, the second column of unit wall panels 14, and the third column of unit wall panels 15 are respectively divided, wherein the first column of unit wall panels 13 and the third column of unit wall panels 15 are both located at the side, and one side of the two columns of wall panels needs to be connected to the inclined column 1. Figure 7 The position indicated by the middle arrow indicates the docking position of the unit wall panels. The adjacent sides of the three rows of unit wall panels need to be connected by overlapping. Figure 7 The position indicated by the middle triangle symbol is the overlap position of the unit wall panel.

[0040] The joint position between the unit wall panels involves the following Figure 8 and Fig. 9 The connection node with the inclined column 1 shown in the figure includes a U-shaped buckle groove 17, a toothed folding edge member 18, a receiving edge member 19, and a plug 20. The U-shaped buckle groove 17 is welded to the inclined column 1 by a fillet weld, and the end of the wall panel 16 is fixedly connected to the U-shaped buckle groove 17 by a self-tapping screw 21. A toothed folding edge member 18 is provided on one side of the end of the wall panel 16, and the end of the wall panel 16 is fixedly connected to the toothed folding edge member 18 by a closed type blind rivet 22. A plug 20 and a receiving edge member 19 are respectively provided at the end of the wall panel 16, and the receiving edge member 19 is fixedly connected to the end of the wall panel 16 by a closed type blind rivet 22, and the receiving edge member 19 is fixedly connected to the U-shaped buckle groove 17 by a self-tapping screw 21. The above-mentioned connection also involves multiple places of butyl tape sealing, and rubber gaskets are also provided at the fasteners. These conventional structures are not described in detail here.

[0041] The connection nodes at the overlap positions between unit wall panels are as follows Fig.10 and Fig.11 As shown, the ends of the two unit wall panels are overlapped with each other, and butyl tape is provided at the overlapped portion, and the overlapped ends are fixed to the flange of the secondary purlin 4 by self-tapping screws 21.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A protective structure of a steel lattice hyperbolic cooling tower, the cooling tower comprising oblique columns coinciding with the oblique generatrix of the tower body, a ring beam connected to the intersection of the oblique columns, the protective structure comprising wall panels, main purlins and secondary purlins, characterized in that: The intersecting oblique columns and ring beams form a triangular unit, and the upper and lower adjacent triangular units form a rhombus unit. In the rhombus unit, a main purlin is arranged parallel to the ring beam, and a secondary purlin is arranged parallel to the oblique generatrix of the tower body. Both ends of the main purlin and the secondary purlin are respectively fixedly connected to the oblique columns, the intersection of the main purlin and the secondary purlin is fixedly connected, and the secondary purlin is fixedly connected to the ring beam; a standard unit is formed between two oblique columns adjacent to each other in the same direction, and a standard unit includes a plurality of columns of unit wall panels spliced ​​with each other, the ends of the unit wall panels in the side columns are fixed to the oblique columns through components, and the adjacent ends between the unit wall panels are overlapped and fixed to the secondary purlins.

2. The enclosure structure of a steel lattice shell hyperbolic cooling tower according to claim 1, characterized in that: The secondary purlin is fixedly connected to the ring beam via a supporting circular tube.

3. The enclosure structure of a steel lattice shell hyperbolic cooling tower according to claim 1, characterized in that: The main purlin and the secondary purlin are both made of H-shaped steel. At the intersection of the main purlin and the secondary purlin, a first connecting plate is arranged at the joint of the webs of two sections of secondary purlins, and a second connecting plate is arranged at the joint of the flanges of two sections of secondary purlins.

4. The enclosure structure of a steel lattice shell hyperbolic cooling tower according to claim 3, characterized in that: The flange outer wall of the secondary purlin is connected to the flange inner wall of the main purlin through a stiffening plate.

5. The enclosure structure of a steel lattice shell hyperbolic cooling tower according to claim 1, characterized in that: The secondary purlin adopts H-shaped steel. At the connection between the secondary purlin and the inclined column, a third connecting plate is arranged parallel to the flange of the secondary purlin. One end of the third connecting plate is welded to the inclined column, and the other end is welded to the flange of the secondary purlin. A fourth connecting plate is arranged parallel to the web of the secondary purlin. One end of the fourth connecting plate is welded to the inclined column, and the other end is fixedly connected to the web of the secondary purlin.

6. The enclosure structure of a steel lattice shell hyperbolic cooling tower according to claim 1, characterized in that: The main purlin is made of H-shaped steel. At the connection between the main purlin and the inclined column, a first purlin support plate is arranged perpendicular to the web of the main purlin, and a second purlin support plate is arranged parallel to the web of the main purlin. One end of the second purlin support plate is welded to the inclined column, and the other end is fixedly connected to the web of the main purlin. One side of the first purlin support plate is welded to the inclined column, and the other side is welded to the second purlin support plate.

7. The enclosure structure of a steel lattice shell hyperbolic cooling tower according to claim 1, characterized in that: The connection node between the wall panel and the inclined column includes a U-shaped buckle groove, a toothed folding edge component, a receiving edge component, and a plug. The U-shaped buckle groove is fixed on the inclined column, and the end of the wall panel is fixedly connected to the U-shaped buckle groove by a self-tapping screw. A toothed folding edge component is arranged on one side of the end of the wall panel, and the end of the wall panel is fixedly connected to the toothed folding edge component by a closed-type blind rivet; a plug and a receiving edge component are arranged at the end of the wall panel, and the receiving edge component is fixedly connected to the end of the wall panel by a closed-type blind rivet, and the receiving edge component is fixedly connected to the U-shaped buckle groove by a self-tapping screw.

8. The enclosure structure of a steel lattice shell hyperbolic cooling tower according to claim 1, characterized in that: The overlapping ends of the unit wall panels are provided with butyl tapes, and the overlapping ends are fixed to the flanges of the secondary purlins by self-tapping screws.

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