Cooling tower enclosure, hyperbolic cooling tower and method of construction of the enclosure

Abstract

The present application relates to cooling tower technical field, disclose a kind of cooling tower enclosure, double-curved cooling tower and enclosure construction method, wherein, a kind of cooling tower enclosure includes multiple longitudinal skeletons, along the main body of cooling tower Circumferentially spaced distribution, longitudinal skeleton includes multiple purline, multiple purline is spaced distribution along the height direction of cooling tower;Multiple pur support nodes, one end is connected with main body, the other end is connected with the end of two adjacent purline;Multiple enclosure plates, are located in the side of longitudinal skeleton away from main body, each enclosure plate is installed on at least two adjacent purline.This application solves the problem that the installation structure of enclosure plate is relatively complex, and the problem of long installation time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooling towers, in particular to a cooling tower enclosure, a hyperbolic cooling tower and an enclosure construction method. BACKGROUND

[0002] A cooling tower is an important industrial facility, which mainly produces steam through water and air flow contact for heat exchange to reduce water temperature. Cooling towers are divided into hyperbolic cooling towers, cylindrical cooling towers or multi-rib cooling towers, etc. Among them, the hyperbolic cooling tower has a necked end surface in height, which makes the internal air flow faster and has higher heat exchange efficiency, so it is more used in large cooling towers. And the cooling tower has a shorter construction period than the concrete structure cooling tower, and can be recycled, so it has gradually become the mainstream trend of the cooling tower market.

[0003] In the related art, a steel structure hyperbolic cooling tower generally includes a tower body and an enclosure, the tower body provides a connecting foundation for the enclosure, and the enclosure fits a hyperbolic shape for the tower body, the enclosure is connected to the tower body through a frame structure, in order to ensure the fitting of the enclosure to the hyperbolic shape, the frame structure is usually complex and takes a long time to install. SUMMARY

[0004] Therefore, the present application provides a cooling tower enclosure, a hyperbolic cooling tower and an enclosure construction method, which solves the problems of complex installation structure and long installation time of the enclosure plate by designing a new cooling tower enclosure.

[0005] In a first aspect, the present application provides a cooling tower enclosure, comprising: a plurality of longitudinal skeletons, which are distributed along the circumference of the main body of the cooling tower, the longitudinal skeleton comprises a plurality of purlins, and the plurality of purlins are distributed along the height direction of the cooling tower; a plurality of purlin support nodes, one end of which is connected to the main body and the other end of which is connected to the end of two adjacent purlins; and a plurality of enclosure plates, which are arranged on the side of the longitudinal skeleton away from the main body, each of the enclosure plates is mounted on at least two adjacent purlins.

[0006] Beneficial effects: The enclosure plate is mounted on the main body of the cooling tower by the longitudinal skeleton, and the longitudinal skeleton is formed by a plurality of purlins. Since the purlins extend along the height direction of the cooling tower, the inclination angles of the purlins at the purlin support nodes are slightly different, which not only facilitates the fitting of the purlins to the outer structure of the hyperbolic cooling tower, but also reduces the number of purlin support nodes to reduce the cost of high-altitude installation, compared with the way of fitting the outer structure of the hyperbolic cooling tower by the purlins inclined in a spiral structure. At the same time, compared with the way of using a single purlin as a longitudinal skeleton, the way of using a plurality of purlins in combination can significantly reduce the cross-sectional area of the required purlins while ensuring the strength of the longitudinal skeleton structure.

[0007] In an alternative embodiment, the purlin support node comprises a column, a seat plate and a mounting plate, one end of the column is connected with the main body, the other end is connected with the seat plate, the mounting plate is arranged on the seat plate and is connected with the end of two adjacent purlins respectively.

[0008] Beneficial effects: through the connection of the column and the main body as the installation basis of other components of the purlin support node, the seat plate is arranged at the end of the column and used for connecting the mounting plate, and the two adjacent purlins are connected with the mounting plate respectively, so that the purlins are relatively fixedly installed with the main body, and the installation of the purlins is realized. The purlin support node has simple and reliable structure and is convenient for construction operation.

[0009] In an alternative embodiment, the purlin support node further comprises a fastener, the end of the purlin is provided with a first adjusting slot extending along the length direction of the purlin, the mounting plate is provided with a second adjusting slot extending along the width direction of the purlin, and the fastener passes through the first adjusting slot and the second adjusting slot and positions the purlin and the mounting plate.

[0010] Specifically, at least two fasteners are connected between the same mounting plate and the same purlin, and the first adjusting slot and the second adjusting slot are correspondingly provided with two groups.

[0011] Beneficial effects: the end of the purlin is positioned and connected with the mounting plate through the fastener, and meanwhile, the end of the purlin connected with the mounting plate can be adjusted along the extension direction of the slot length of the first adjusting slot and the second adjusting slot due to the arrangement of the first adjusting slot and the second adjusting slot, so that the position and the angle of the purlin are fine-adjusted, the fitting requirement of the longitudinal keel to the outer shape of the hyperbolic cooling tower is met, meanwhile, the purlin with the adjusted position is relatively fixed with the mounting plate through the fastener, and then welding operation is performed by the construction personnel, so that the operation is convenient, the positioning is accurate, good practicability is achieved, and the connection strength is improved.

[0012] In an alternative embodiment, at least two mounting plates are arranged, the two mounting plates are oppositely arranged on the seat plate, and the purlin is located between the two oppositely arranged mounting plates.

[0013] Beneficial effects: the two oppositely arranged mounting plates are used for connecting the purlin together, the horizontal position of the purlin is limited through the two mounting plates in addition to the connection of the purlin through the fastener, and the structural stability is further improved.

[0014] In an alternative embodiment, a contraction joint is arranged between the adjacent surrounding plates in the horizontal direction, a closing edge structure is arranged at the contraction joint, and the closing edge structure is connected with the adjacent surrounding plates on both sides respectively.

[0015] Beneficial effects: By reserving expansion joints between the enclosure plates, not only sufficient space is reserved for the thermal expansion and contraction of the enclosure plates, but also the size of the single enclosure plate is controlled within a certain range in the design, so that when the single enclosure plate is affected by thermal expansion and contraction, it will not form a larger internal stress at the connection with the purlin, resulting in structural damage or reduced service life. The enclosure structure is used to connect adjacent enclosure plates to form an overall enclosure structure, and the edge closing structure can effectively block external moisture to reduce the direct impact of rainwater on the fasteners and other connecting structures.

[0016] In an optional embodiment, the edge closing structure comprises an edge closing plate and an edge closing batten, one end of the edge closing batten is connected with the adjacent purlin, the other end is connected with the edge closing plate, and the two sides of the edge closing plate are respectively abutted and connected with the side surface of the adjacent enclosure plate away from the main body.

[0017] Beneficial effects: The edge closing batten of the edge closing structure is connected with the purlin, which improves the structural stability of the edge closing structure and further reduces the possibility of structural failure caused by the edge closing structure moving away from the original position under the stress transferred by the thermal expansion and contraction of the enclosure plate. In addition, the edge closing plate abuts against the enclosure plate, improving the sealing performance.

[0018] In an optional embodiment, the edge closing structure further comprises a sealing plate, the sealing plate comprises a plate body and a tooth-shaped folded edge, the plate body is abutted against the plate surface of the edge closing plate away from the enclosure plate, and is connected with the edge closing plate and the enclosure plate through fasteners, the plate surface of the enclosure plate is provided with a mounting groove matched with the tooth-shaped folded edge, and the tooth-shaped folded edge is inserted into the mounting groove.

[0019] Beneficial effects: The tooth-shaped folded edge of the sealing plate is matched with the mounting groove, which effectively improves the sealing performance through the abutment of the tooth-shaped folded edge and the bottom of the mounting groove. The plate body of the sealing plate abuts against the edge closing plate, forming a barrier at the connection between the enclosure plate and the edge closing plate, which improves the sealing performance and the structural reliability.

[0020] In an optional embodiment, the part of the enclosure plate abutting against the edge closing plate is provided with a receiving groove, and a sealing gasket is arranged in the receiving groove, and the end of the sealing gasket extends out of the receiving groove and abuts against the edge closing plate.

[0021] Beneficial effects: By setting the sealing gasket, the sealing performance is further improved to prevent external moisture from entering.

[0022] In a second aspect, the application also provides a hyperbolic cooling tower, comprising: a main body comprising a double-cone truss spliced by metal rods; the above-mentioned enclosure structure of the cooling tower, the purlin support node is connected with the main body, and the enclosure plate is installed on the purlin support node.

[0023] Beneficial effects: the hyperbolic cooling tower adopts the above-mentioned enclosure structure, guarantees the structural strength, enables the enclosure structure to well fit the shape of the hyperbolic cooling tower, and further forms the hyperbolic cooling tower structure with high heat dissipation efficiency, meanwhile, the above-mentioned enclosure structure reduces the connecting nodes of the longitudinal keels, reduces the number of parts, improves the construction convenience and shortens the construction period.

[0024] In a third aspect, the present application further provides a cooling tower enclosure construction method, which is used for the above-mentioned hyperbolic cooling tower, comprises an enclosure plate, a purlin and a purlin support node, the purlin support node comprises a fastener, a stand, a seat plate and at least two mounting plates, the purlin is provided with a first adjusting slot with a slot length extending along the length direction of the purlin, the mounting plate is provided with a second adjusting slot with a slot length extending along the width direction of the purlin, and the method further comprises the following steps: ground welding, welding the stand, the seat plate and one of the mounting plates of the purlin support node; welding operation, welding the stand of the purlin support node with the main body, adjusting the positions of two adjacent purlins, fitting the hyperbolic shape of the cooling tower, welding the other mounting plate, connecting and positioning the corresponding mounting plate through the fastener passing through the first adjusting slot and the second adjusting slot, and then welding the purlin with the mounting plate; installing the enclosure plate, connecting the enclosure plate with at least two adjacent purlins; repeating the above-mentioned welding operation and the installation of the enclosure plate until the construction is completed.

[0025] Beneficial effects: through the partial welding and assembly of the purlin support structure on the ground in advance, the amount of work of the construction personnel in high-altitude operation is reduced, the construction risk is reduced, and the construction speed is improved, and meanwhile, the operation convenience and the structural strength of the enclosure structure can be guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0027] Figure 1 It is a local structure schematic diagram of a cooling tower enclosure structure of an embodiment of the present application;

[0028] Figure 2 It is a purlin support node structure schematic diagram of a cooling tower enclosure structure of an embodiment of the present application;

[0029] Figure 3 It is a schematic diagram of another view of a purlin support node of a cooling tower enclosure structure of an embodiment of the present application;

[0030] Figure 4 Another perspective view of a cooling tower enclosure structure according to an embodiment of the present application;

[0031] Figure 5 A schematic view of a first adjusting groove structure at a purlin of a cooling tower enclosure structure according to an embodiment of the present application;

[0032] Figure 6 A schematic view of an enclosure board and expansion joint structure of a cooling tower enclosure structure according to an embodiment of the present application;

[0033] Figure 7 A schematic view of an edge closing structure of a cooling tower enclosure structure according to an embodiment of the present application;

[0034] Figure 8 A schematic view of a structure at a sealing board in an edge closing structure of a cooling tower enclosure structure according to an embodiment of the present application.

[0035] Explanation of reference signs:

[0036] 100, longitudinal framework; 101, purlin; 1011, first adjusting groove; 200, purlin support node; 201, stand column; 202, seat plate; 203, mounting plate; 204, stiffening rib; 2031, second adjusting groove; 300, enclosure board; 400, expansion joint; 500, edge closing structure; 501, edge closing board; 502, edge closing keel; 503, sealing board; 5031, tooth-shaped folded edge; 504, sealing gasket; 600, main body. DETAILED DESCRIPTION

[0037] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0038] The embodiments of the present application will be described below in connection with Figures 1 to 7 .

[0039] According to the embodiments of the present application, in one aspect, a cooling tower enclosure structure is provided, please refer to Figure 1, including: a plurality of longitudinal skeletons, which are distributed in a circumferential direction of the main body 600 of the cooling tower, the longitudinal skeleton 100 including a plurality of purlins 101, the plurality of purlins 101 being distributed in a height direction of the cooling tower; a plurality of purlin support nodes 200, one end of which is connected to the main body 600 and the other end of which is connected to end portions of two adjacent purlins 101; and a plurality of enclosure plates 300, which are arranged on a side of the longitudinal skeleton 100 away from the main body 600, and each of which is mounted on at least two adjacent purlins 101.

[0040] In the embodiment, the enclosure plate 300 is mounted on the main body 600 of the cooling tower by the longitudinal skeleton 100, and the longitudinal skeleton 100 is formed by a plurality of purlins 101, because the purlins 101 all extend in the height direction of the cooling tower, the purlins 101 have slightly different inclination angles at the purlin support nodes 200, which not only facilitates the purlins 101 to fit the outer structure of the hyperbolic cooling tower, but also reduces the number of purlin support nodes 200 to reduce the cost of high-altitude installation, compared with the way in which the purlins 101 are inclined to form a spiral structure to fit the outer structure of the hyperbolic cooling tower. Meanwhile, compared with the way in which a single purlin 101 is used as the longitudinal skeleton 100, the way in which a plurality of purlins 101 are combined can significantly reduce the cross-sectional area of the required purlins 101 while ensuring the strength of the longitudinal skeleton structure.

[0041] In the above embodiment, specifically, the plurality of longitudinal skeletons 100 are uniformly and circumferentially distributed along the cooling tower, the longitudinal skeletons extend in the height direction of the cooling tower and fit the curved shape of the hyperbolic cooling tower, the longitudinal skeletons are connected to the main body 600 of the cooling tower and serve as the mounting basis of the enclosure plates 300. In each of the purlins 101 on the same longitudinal skeleton 100, the angle between adjacent purlins 101 can be adjusted relatively, so that each structural member extends in a straight line, and the overall longitudinal skeleton 100 forms a curved shape, thus meeting the shape requirement while ensuring the strength.

[0042] Specifically, the embodiment does not limit the specific form of the purlin support node 200, the purlin support node 200 can connect the longitudinal skeleton 100 to the main body 600 of the cooling tower, and it is only required to connect two adjacent purlins 101 on the same longitudinal skeleton 100. In addition, the embodiment does not limit the structure and size of the enclosure plate 300.

[0043] In one embodiment, referring to Figures 2 to 4 , the purlin support node 200 includes a stand column 201, a seat plate 202, and a mounting plate 203, one end of the stand column 201 is connected to the main body 600 and the other end of the stand column 201 is connected to the seat plate 202, and the mounting plate 203 is arranged on the seat plate 202 and connected to end portions of two adjacent purlins 101 respectively.

[0044] In addition, specifically, the stiffening ribs 204 are further arranged on the seat plate 202, and the stiffening ribs 204 are fixedly connected with the mounting plate 203 and the seat plate 202 respectively, so as to improve the structural strength of the purlin support node 200.

[0045] In the embodiment, the column 201 is connected with the main body 600 as a mounting base of other components of the purlin support node 200, the seat plate 202 is arranged at the end of the column 201, and the mounting plate 203 is connected with the seat plate 202, and the two adjacent purlins 101 are connected with the mounting plate 203 respectively, so as to relatively fixedly mount the purlins 101 with the main body 600, and the mounting of the purlins 101 is realized. The purlin support node 200 is simple in structure, reliable, and convenient for construction operation.

[0046] In one embodiment, referring to Figures 2 to 5 , the purlin support node 200 further comprises fasteners, the end of the purlin 101 is provided with a first adjusting groove 1011 extending along the length direction of the purlin 101, the mounting plate 203 is provided with a second adjusting groove 2031 extending along the width direction of the purlin 101, and the fasteners pass through the first adjusting groove 1011 and the second adjusting groove 2031 and position the purlin 101 and the mounting plate 203.

[0047] In the embodiment, the end of the purlin 101 is positioned and connected with the mounting plate 203 through the fasteners, and meanwhile, the first adjusting groove 1011 and the second adjusting groove 2031 are arranged, so that the end of the purlin 101 connected with the mounting plate 203 can be adjusted along the extension direction of the groove length of the first adjusting groove 1011 and the second adjusting groove 2031, and then the position and angle of the purlin 101 are finely adjusted, the fitting requirement of the longitudinal keel to the outer shape of the hyperbolic cooling tower is met, and meanwhile, the purlin 101 with the adjusted position is relatively fixed with the mounting plate 203 through the fasteners, and then the welding operation is performed by the construction personnel, so that the operation is convenient, the positioning is accurate, the good practicability is achieved, and the connection strength is improved.

[0048] In one embodiment, the mounting plate 203 is arranged at least two, and the at least two mounting plates 203 are oppositely arranged on the seat plate 202, and the purlin 101 is located between the oppositely arranged two mounting plates 203.

[0049] It should be noted that the stiffening ribs 204 can be arranged one or two, and the two mounting plates 203 are reinforced respectively.

[0050] In the embodiment, the two oppositely arranged mounting plates 203 are used to connect the purlin 101, and in addition to connecting the purlin 101 through the fasteners, the horizontal position of the purlin 101 is also limited through the two mounting plates 203, and the structural stability is further improved.

[0051] In one embodiment, referring to Figures 6 to 7In the horizontal direction, the expansion joints 400 are arranged between the adjacent surrounding plates 300, and the edge closing structures 500 are arranged at the expansion joints 400, and the edge closing structures 500 are connected to the adjacent surrounding plates 300 on both sides.

[0052] In the embodiment, by reserving the expansion joints 400 between the surrounding plates 300, sufficient space is reserved for the thermal expansion and contraction of the surrounding plates 300, and in the design, the size of the single surrounding plate 300 is controlled within a certain range, so that when the single surrounding plate 300 is affected by thermal expansion and contraction, a large internal stress is not formed at the connection with the purlin 101, which causes structural damage or reduces the service life. The surrounding structure is used to connect adjacent surrounding plates 300 to form a whole surrounding structure, and the edge closing structure 500 can effectively block external moisture and reduce the direct impact of rainwater on the fastener and other connection structures.

[0053] In one embodiment, referring to Figure 7 , the edge closing structure 500 includes an edge closing plate 501 and an edge closing batten 502, one end of the edge closing batten 502 is connected to the adjacent purlin 101, and the other end is connected to the edge closing plate 501, and the two sides of the edge closing plate 501 are respectively abutted and connected to the side surface of the adjacent surrounding plate 300 away from the main body 600.

[0054] Specifically, the width of the edge closing plate 501 coinciding with the surface of the surrounding plate 300 can be set according to the specific width of the expansion joint 400.

[0055] In the embodiment, the edge closing batten 502 of the edge closing structure 500 is connected to the purlin 101, which improves the structural stability of the edge closing structure 500 and further reduces the possibility of structural failure caused by the edge closing structure 500 being dislodged from the original position due to the stress transmitted by the thermal expansion and contraction of the surrounding plate 300. In addition, the edge closing plate 501 abuts against the surrounding plate 300, which improves the sealing performance.

[0056] In one embodiment, referring to Figure 7 and Figure 8 , the edge closing structure 500 further includes a sealing plate 503, the sealing plate 503 includes a plate body and a tooth-shaped folded edge 5031, the plate body is abutted to the surface of the edge closing plate 501 away from the surrounding plate 300, and is connected to the edge closing plate 501 and the surrounding plate 300 through fasteners, and the surface of the surrounding plate 300 is provided with a mounting groove matched with the tooth-shaped folded edge 5031, and the tooth-shaped folded edge 5031 is inserted into the mounting groove.

[0057] In the embodiment, the tooth-shaped folding edge 5031 of the sealing plate 503 is matched with the mounting groove, the sealing performance is effectively improved through the abutment between the tooth-shaped folding edge 5031 and the bottom of the mounting groove, and then the plate body of the sealing plate 503 is abutted with the closing plate 501, a barrier is formed at the connecting position of the enclosing plate 300 and the closing plate 501, the sealing performance is improved, and the structural reliability is improved.

[0058] In one embodiment, the part of the enclosing plate 300 abutting with the closing plate 501 is provided with a containing groove, the containing groove is provided with a sealing gasket 504, the end of the sealing gasket 504 extends out of the containing groove and abuts with the closing plate 501.

[0059] Specifically, the sealing gasket 504 can be a rubber gasket or other structure with sealing and waterproof functions.

[0060] In the embodiment, the sealing gasket 504 is arranged to further prevent external moisture from entering, and the sealing performance is improved.

[0061] According to the embodiment of the application, in another aspect, a hyperbolic cooling tower is also provided, which comprises: a main body 600 comprising a double-cone truss spliced by metal rods; the above-mentioned cooling tower enclosing structure, the purlin support node 200 is connected with the main body 600, and the enclosing plate 300 is mounted on the purlin support node 200.

[0062] Specifically, the main body 600 is arranged in a double-cone shape along the height direction of the cooling tower, and the diameter of each layer of the main body 600 is as close as possible to the peripheral size of the hyperbolic cooling tower.

[0063] In the embodiment, the hyperbolic cooling tower adopts the above-mentioned enclosing structure, which guarantees the structural strength and enables the enclosing structure to well fit the shape of the hyperbolic cooling tower, thereby forming a hyperbolic cooling tower structure with high heat dissipation efficiency, and through the arrangement of the above-mentioned enclosing structure, the connection nodes of the longitudinal keels are reduced, the number of parts is reduced, the construction convenience is improved, and the construction period is shortened.

[0064] According to the embodiment of the present application, in another aspect, a cooling tower enclosure construction method is also provided for the hyperbolic cooling tower described above, including the enclosure plate 300, the purlin 101 and the purlin support node 200, the purlin support node 200 including the fastener, the upright column 201, the seat plate 202 and at least two mounting plates 203, the purlin 101 being provided with the first adjusting slot 1011 extending along the length direction of the purlin 101, the mounting plate 203 being provided with the second adjusting slot 2031 extending along the width direction of the purlin 101, the method further including the following steps: ground welding, welding the upright column 201, the seat plate 202 and one of the mounting plates 203 of the purlin support node 200; welding operation, welding the upright column 201 of the purlin support node 200 with the main body 600, adjusting the positions of the adjacent two purlins 101 so that the adjacent purlins 101 fit the hyperbolic shape of the cooling tower, welding the other mounting plate 203, and then connecting and positioning the corresponding mounting plate 203 through the fastener passing through the first adjusting slot 1011 and the second adjusting slot 2031, and then welding the purlin 101 with the mounting plate 203; installing the enclosure plate, connecting the enclosure plate 300 with the adjacent at least two purlins 101; repeating the above welding operation and installing the enclosure plate steps until the construction is completed.

[0065] In the embodiment, by pre-assembling and partially welding the purlin support structure on the ground, the amount of work of the construction personnel in high-altitude operation is reduced, the construction risk is reduced, the construction speed is improved, and the convenience of operation and the structural strength of the enclosure structure are guaranteed.

[0066] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A cooling tower enclosure structure, characterized in that: include: A plurality of longitudinal frames are spaced apart along the circumference of the main body (600) of the cooling tower, wherein the longitudinal frames (100) include a plurality of purlins (101), and the plurality of purlins (101) are spaced apart along the height direction of the cooling tower; a plurality of purlin support nodes (200), one end of which is connected to the main body (600) and the other end of which is connected to the ends of two adjacent purlins (101); A plurality of enclosure panels (300) are provided on a side of the longitudinal frame (100) away from the main body (600), and each enclosure panel (300) is mounted on at least two adjacent purlins (101); The purlin support node (200) comprises a column (201), a seat plate (202) and a mounting plate (203); one end of the column (201) is connected to the main body (600), and the other end is connected to the seat plate (202); the mounting plate (203) is provided on the seat plate (202) and is respectively connected to the ends of two adjacent purlins (101); The purlin support node (200) further comprises a fastener, wherein the end of the purlin (101) is provided with a first adjustment slot (1011) whose slot length extends along the length direction of the purlin (101), and the mounting plate (203) is provided with a second adjustment slot (2031) whose slot length extends along the width direction of the purlin (101), and the fastener passes through the first adjustment slot (1011) and the second adjustment slot (2031) and positions the purlin (101) and the mounting plate (203); In the horizontal direction, expansion joints (400) are provided between adjacent enclosure panels (300), and edge trimming structures (500) are provided at the expansion joints (400), with both sides of the edge trimming structures (500) being connected to adjacent enclosure panels (300) respectively; The edge trimming structure (500) comprises an edge trimming plate (501) and an edge trimming keel (502), one end of the edge trimming keel (502) being connected to the adjacent purlin (101), and the other end being connected to the edge trimming plate (501), and both sides of the edge trimming plate (501) being respectively abutted against and connected to a side surface of the adjacent enclosure plate (300) away from the main body (600); The edge trimming structure (500) further comprises a sealing plate (503), wherein the sealing plate (503) comprises a plate body and a toothed folded edge (5031), wherein the plate body abuts against the plate surface of the edge trimming plate (501) away from the enclosure plate (300), and is connected to the edge trimming plate (501) and the enclosure plate (300) via fasteners, and a mounting groove adapted to the toothed folded edge (5031) is provided on the plate surface of the enclosure plate (300), and the toothed folded edge (5031) is inserted into the mounting groove.

2. The cooling tower enclosure structure according to claim 1, characterized in that: At least two mounting plates (203) are provided, and at least two mounting plates (203) are relatively arranged on the seat plate (202), and the purlin (101) is located between the two relatively arranged mounting plates (203).

3. The cooling tower enclosure structure according to claim 1, wherein: The portion of the enclosure plate (300) abutting against the edge trimming plate (501) is provided with a receiving groove, a sealing gasket (504) is provided in the receiving groove, and an end portion of the sealing gasket (504) extends out of the receiving groove and abuts against the edge trimming plate (501).

4. A hyperbolic cooling tower, characterized in that: include: The main body (600) comprises a double-cone truss formed by splicing metal rods; The cooling tower enclosure structure according to any one of claims 1 to 3, wherein the purlin support node (200) is connected to the main body (600), and the enclosure plate (300) is installed on the purlin support node (200).

5. A cooling tower enclosure structure construction method, characterized in that: The hyperbolic cooling tower according to claim 4 comprises a casing plate (300), a purlin (101) and a purlin support node (200), wherein the purlin support node (200) comprises a fastener, a column (201), a seat plate (202) and at least two mounting plates (203), wherein the purlin (101) is provided with a first adjustment groove (1011) whose groove length extends along the length direction of the purlin (101), and the mounting plate (203) is provided with a second adjustment groove (2031) whose groove length extends along the width direction of the purlin (101), and further The following steps are included: Ground welding: welding the upright column (201), the seat plate (202) and one of the mounting plates (203) of the purlin support node (200); Welding operation, welding the column (201) of the purlin support node (200) to the main body (600), adjusting the positions of two adjacent purlins (101) so that the adjacent purlins (101) fit the hyperbolic shape of the cooling tower, welding another mounting plate (203), and then connecting and positioning the corresponding mounting plate (203) through the first adjustment slot (1011) and the second adjustment slot (2031) by fasteners, and then welding the purlin (101) to the mounting plate (203); Installing a guard plate to connect the enclosure plate (300) to at least two adjacent purlins (101); Repeat the above-mentioned welding operation and the steps of installing the guard plate until the construction is completed.

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