cooling tower

Abstract

The application relates to the technical field of power generation equipment, and discloses a cooling tower which comprises a central column fixed at the bottom of the ground, a plurality of closed truss frames arranged at intervals along the height direction of the cooling tower, and a plurality of cable drums connected between the truss frames and the central column, wherein the central column is located at the central position of the truss frames, the cable drum comprises a plurality of groups of inhaul cables distributed radially relative to the central column, and the two ends of each group of inhaul cables are respectively and tightly connected between the central column and the truss frame. Compared with the existing cooling tower structure form, the cooling tower provided by the application has the advantages of fewer components, fast construction speed, high structural bearing capacity, high stability, strong anti-shaking performance and the like, can meet the design requirements of super-large cooling towers, and effectively solves the problems of low bearing capacity and low structural rigidity of the existing steel structure cooling tower, prominent vibration caused by wind load, and the like, and cannot meet the design requirements of super-large cooling towers.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power generation equipment, in particular to a cooling tower. BACKGROUND

[0002] The cooling tower is one of the main structures of a thermal power plant, and most of them are in the form of concrete structure. The concrete tower has the following shortcomings: large self-weight, large seismic effect, construction affected by winter, long construction period, long time for operation, difficult recycling of concrete materials, and poor environmental protection. Compared with the concrete tower, the steel structure cooling tower has the advantages of light weight and outstanding seismic performance, and therefore the steel structure tower is applied more and more.

[0003] At present, the main structure of the steel structure cooling tower usually adopts a single hyperboloid or a steel truss grid structure, which has the defects of many components, complex connecting nodes, slow construction progress, and the like. With the increase of the tower height and the increase of the tower cylinder diameter, the bearing capacity of the main structure is significantly reduced, the structural stiffness is obviously reduced, the vibration caused by the wind load is very prominent, and the design requirements of the super-large cooling tower cannot be met. SUMMARY

[0004] Therefore, the present application provides a cooling tower to solve the problems of low structural bearing capacity and low stiffness of the steel structure cooling tower in the prior art.

[0005] The present application provides a cooling tower, comprising:

[0006] a central column, the bottom of which is fixed on the ground;

[0007] a plurality of closed truss frames, which are arranged at intervals along the height direction of the cooling tower, and the central column is located at the central position of the truss frame;

[0008] a plurality of cable drums, which are connected between the plurality of truss frames and the central column, the cable drum comprises a plurality of groups of inhaul cables which are distributed in a radial manner with respect to the central column, and the two ends of each group of inhaul cables are respectively and tightly connected between the central column and the truss frame.

[0009] Beneficial effects: By setting the center column, and the bottom of the center column is fixed on the ground, the center column can play the role of anchoring the cable tray and bearing the dead load of the whole steel tower, the truss frame is fixed on the center column at different heights through the cable tray, when the truss frame is subjected to external forces such as wind load, it can be transmitted to the center column through the cable tray, the center column is subjected to axial compression as a whole, and bears the dead load of the whole cooling tower, the cable tray is designed by adopting a plurality of groups of cables distributed in a radial manner, and prestress is applied to the radial cables, so that when the truss frame is compressed, the center column is tensioned, like a bicycle wheel, so that the whole structure has high stiffness and bearing capacity, and the stability of the whole structure is improved. Compared with the existing cooling tower structure form, the cooling tower provided by the application has the advantages of less components, fast construction speed, high structure bearing capacity, high stability, strong anti-shaking performance and the like, through the setting of the cable tray and the center column, the size of the truss frame can be larger, the truss frame can be designed as a giant truss, and the height of the whole tower body can also be higher, so that the design requirements of the super-large cooling tower can be met, and the problems of low bearing capacity and low structure stiffness of the existing steel structure cooling tower, prominent vibration caused by wind load, and the like are effectively solved.

[0010] In an alternative embodiment, the cable tray is composed of double-layer cable systems, each group of cables including a first cable and a second cable;

[0011] Wherein the first end of the first cable is connected above the truss frame, the first end of the second cable is connected below the truss frame, and the second end of the first cable and the second end of the second cable meet at a point and are connected to the center column.

[0012] Beneficial effects: The cable tray adopts an upper and lower double-layer cable structure, the first cable above is connected above the giant truss frame, the second cable below is connected below the truss frame, the centers of the first cable and the second cable meet at a point and are connected to the center column, and the overall stiffness and bearing capacity are higher than those of a single cable.

[0013] In an alternative embodiment, the truss frame is a rectangular ring truss structure, the truss frame includes upper and lower chord bars arranged in an upper and lower manner, the first cable is connected to the upper chord bar, and the second cable is connected to the lower chord bar.

[0014] Beneficial effects: The truss frame adopts a four-edge rectangular truss, has high torsional stiffness, the first cable above is connected to the upper chord bar of the truss frame, and the second cable below is connected to the lower chord bar of the truss frame, so that the truss frame can be tensioned from the upper and lower sides, the overall stiffness is higher, and the bearing capacity is higher.

[0015] In an alternative embodiment, the cable is anchored at one end to the central column and is tensioned at the other end to the truss frame.

[0016] Beneficial effects: the cable is tensioned on the outside of the large truss frame and is anchored on the inside of the central column. By applying prestress, the large truss frame is in compression and the central column is in tension, like a bicycle wheel, with high stiffness and load-carrying capacity, which improves the overall structural stiffness.

[0017] In an alternative embodiment, the central column comprises:

[0018] A plurality of horizontal support members are arranged in the height direction of the cooling tower, and the horizontal support members comprise a ring beam and a plurality of cross beams connected in the ring beam.

[0019] A plurality of vertical support members are arranged in the circumferential direction of the ring beam and are connected and fixed with the ring beam to fix the plurality of horizontal support members integrally.

[0020] The cable is anchored at one end to the ring beam and is connected at the other end to the truss frame.

[0021] Beneficial effects: the central column is arranged in the center of the tower body and comprises a plurality of horizontal support members and a plurality of vertical support members. The horizontal support members further improve the overall stiffness of the central column by arranging the ring beam and the plurality of cross beams in the ring beam, thereby further improving the load-carrying capacity of the central column to the dead load and wind load of the entire steel tower.

[0022] In an alternative embodiment, the cross section of the ring beam is circular, and the cross beam passes through the center of the ring beam.

[0023] Beneficial effects: the ring beam adopts a circular cross section, which is more uniform in stress and can further increase the compressive load-carrying capacity of the central column.

[0024] In an alternative embodiment, the central column further comprises:

[0025] A plurality of diagonal support members are obliquely connected between the ring beams of adjacent two horizontal support members, and the diagonal support members meet the ring beam and the cross beam at a point.

[0026] Beneficial effects: the central column is further improved in overall stiffness by arranging a plurality of diagonal support members obliquely connected between the ring beams of adjacent two horizontal support members, thereby greatly improving the load-carrying capacity of the central column to the dead load and wind load of the entire steel tower.

[0027] In an alternative embodiment, the cooling tower further comprises:

[0028] a plurality of cable nets, the cable nets being annular, the cable nets including a first cable net having two ends being tensionally connected between two adjacent truss frames, and a second cable net having two ends being tensionally connected between the bottommost truss frame and the ground.

[0029] Beneficial effects: through the cable nets arranged around the tower body, the cable nets including not only the first cable nets arranged between the truss frames, but also the second cable nets connected between the bottom of the truss frames and the ground, such design can not only realize the support to the whole tower body, but also the cable nets can be used as a force structure to bear the self-weight and wind load of the external enclosure structure, play a role in increasing the torsional stiffness of the structure, prevent the tower body from torsion under the action of asymmetric wind load, and further improve the stability of the tower body.

[0030] In an alternative embodiment, the cable net includes:

[0031] a plurality of horizontal ring cables, being annular, the horizontal ring cables having at least two and being arranged in a spaced manner along the height direction of the cooling tower;

[0032] a plurality of vertical cables, being arranged in a spaced manner along the circumferential direction of the horizontal ring cables, and being fixedly connected with the horizontal ring cables to fix the at least two groups of horizontal ring cables integrally;

[0033] a plurality of diagonal cables, both ends of the vertical cable extending out of the horizontal ring cable, the diagonal cable being obliquely connected between the end of the vertical cable and the connection point between the vertical cable and the horizontal ring cable, and between the two connection points on the diagonal line of the vertical cable and the horizontal ring cable.

[0034] Beneficial effects: the cable net is composed of the horizontal ring cable, the vertical cable and the diagonal cable, the vertical cable and the horizontal ring cable are in a negative curvature shape, bear the self-weight and wind load of the enclosure structure, and the diagonal cable mainly plays a role in increasing the torsional stiffness of the structure to prevent the structure from torsion under the action of asymmetric wind load.

[0035] In an alternative embodiment, the bottom of the cable net is anchored on the ground.

[0036] Beneficial effects: both ends of the vertical cable extend out of the horizontal ring cable, both ends of the diagonal cable converge to the same point as both ends of the vertical cable, which is convenient for the bottom of the second cable net to be anchored on the ground, and the cable net is fixed on the ground in an anchoring manner, which is firm and stable.

[0037] In an alternative embodiment, the cable net adopts a structure form of single-layer cable net or double-layer cable net. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0039] Figure 1 Structure diagram of the cooling tower in the embodiment of the present application;

[0040] Figure 2 Structure diagram of the cooling tower in the embodiment of the present application; Figure 1 Structure diagram of the cooling tower in the embodiment of the present application;

[0041] Figure 3 Structure diagram of the single cable net in the embodiment of the present application;

[0042] Figure 4 Structure diagram of the single truss frame, cable tray and central column in the embodiment of the present application;

[0043] Figure 5 Force transmission mechanism diagram of the truss frame, cable tray and central column in the embodiment of the present application;

[0044] Figure 6 Longitudinal sectional view of the truss frame in the embodiment of the present application; Figure 4 Longitudinal sectional view of the truss frame in the embodiment of the present application;

[0045] Figure 7 Local structure enlarged view of the truss frame in the embodiment of the present application; Figure 4 Local structure enlarged view of the truss frame in the embodiment of the present application; Local structure enlarged view of the truss frame in the embodiment of the present application;

[0046] Local structure enlarged view of the truss frame in the embodiment of the present application; Figure 8 Local structure enlarged view of the truss frame in the embodiment of the present application; Local structure enlarged view of the truss frame in the embodiment of the present application;

[0047] Local structure enlarged view of the truss frame in the embodiment of the present application; Figure 9 Structure diagram of the hyperbolic steel structure cooling tower in the embodiment of the present application; Structure diagram of the hyperbolic steel structure cooling tower in the embodiment of the present application;

[0048] Structure diagram of the straight cylinder conical segment type steel structure cooling tower in the embodiment of the present application. Figure 10 Explanation of reference signs:

[0049] Figure 11 10, central column; 11, horizontal support member; 111, ring beam; 112, cross beam; 12, vertical support member; 13, oblique support member; 14, hinged rod;

[0050] 10, central column; 11, horizontal support member; 111, ring beam; 112, cross beam; 12, vertical support member; 13, oblique support member; 14, hinged rod;

[0051] 10, central column; 11, horizontal support member; 111, ring beam; 112, cross beam; 12, vertical support member; 13, oblique support member; 14, hinged rod;

[0052] 20, truss frame; 21, top chord; 22, bottom chord; 23, vertical web; 24, flat diagonal; 25, vertical diagonal; 26, horizontal web;

[0053] 30, cable tray; 31, cable; 311, first cable; 312, second cable;

[0054] 40, cable net; 401, horizontal ring cable; 402, vertical cable; 403, diagonal cable; 41, first cable net; 42, second cable net. DETAILED DESCRIPTION

[0055] In order to make the objects, 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 clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0056] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0057] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0058] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0059] The embodiments of the present application will be described below with reference to Figures 1 to 11 .

[0060] According to an embodiment of the present application, in one aspect, the present application provides a cooling tower, comprising: a central column 10, a plurality of closed truss frames 20, a plurality of cable trays 30, the bottom of the central column 10 being fixed on the ground; a plurality of closed truss frames 20 are arranged in the height direction of the cooling tower, and the central column 10 is located at the center position of the truss frame 20; a plurality of cable trays 30 are correspondingly connected between a plurality of truss frames 20 and the central column 10, and the cable tray 30 comprises a plurality of groups of cables 31 distributed radially relative to the central column 10, and both ends of each group of cables 31 are respectively tensioned and connected between the central column 10 and the truss frame 20.

[0061] In the above embodiment, by arranging the central column 10, and the bottom of the central column 10 being fixed on the ground, the central column 10 can play the role of anchoring the cable tray 30 and bearing the self-weight load of the entire steel tower, the truss frame 20 is fixed on the central column 10 at different heights through the cable tray 30, when the truss frame 20 is subjected to external forces such as wind load, the truss frame 20 can be transmitted to the central column 10 through the cable tray 30, the central column 10 is subjected to axial compression as a whole, and bears the self-weight load of the entire cooling tower, the cable tray 30 is designed by adopting a plurality of groups of cables 31 distributed radially, and by applying prestress to the radially distributed cables 31, when the truss frame 20 is compressed, the central column 10 is tensioned, like a bicycle wheel, so that the entire structure has high stiffness and bearing capacity, and the stability of the overall structure is improved. Compared with the existing cooling tower structure form, the cooling tower provided by the present application has the advantages of fewer components, fast construction speed, high structural bearing capacity, high stability, strong anti-shaking performance and the like, by arranging the cable tray 30 and the central column 10, the size of the truss frame 20 can be made larger, the truss frame 20 can be designed as a giant truss, and the height of the entire tower body can also be made higher, so as to meet the design requirements of super-large cooling towers, and effectively solve the problems of low bearing capacity and low structural stiffness of the existing steel structure cooling tower, the vibration caused by wind load is very prominent, and the design requirements of super-large cooling towers cannot be met.

[0062] In addition, the cable tray 30 is combined with the arrangement of the truss frame 20, which reduces the number of rigid bar members under the premise of ensuring the stability of the tower body, thereby reducing the number of steel structure members in the steel structure cooling tower, shortening the prefabrication time of each part in the factory, and the installation time and construction period, and effectively reducing the engineering cost.

[0063] Specifically, the bottom of the central column 10 can be directly rigidly connected with the ground, or can adopt a hinged form, such as Figure 9As shown, the lower end of the center column 10 is fixedly provided with a plurality of hinged rods 14, the upper end of each of the plurality of hinged rods 14 is fixedly connected with the main body part of the center column 10, and the lower end converges to a point which is hinged with a hinge seat or the like structure on the ground as a hinge point. Preferably, in the embodiment, the center column 10 is hinged with the ground, and the hinged form has the advantages of convenient construction and easy installation.

[0064] Further, as shown in Figure 1 , Figure 4 , Figure 5 As shown, the plurality of groups of cables 31 are uniformly distributed in a radial manner with respect to the center column 10, similar to the spokes of a bicycle wheel, and by applying prestress to the cables 31, the center column 10 can be in tension when the truss frame 20 is under compression, thereby improving the overall structural rigidity and ensuring the stability of the entire cooling tower.

[0065] It should be noted that in the embodiment, the closed truss frame 20 refers to a circumferentially closed structure, such as a closed ring, a closed frame, a closed polygon, etc., which is not limited in the embodiment. The center column 10 is arranged inside the truss frame 20 and located at the center position of the truss frame 20, so as to improve the balance and uniformity of the force received by the center column 10 and improve the stability and carrying capacity of the entire cooling tower structure.

[0066] In some embodiments, the cable reel 30 is composed of double-layer cable systems, each group of cables 31 includes a first cable 311 and a second cable 312; wherein the first end of the first cable 311 is connected above the truss frame 20, the first end of the second cable 312 is connected below the truss frame 20, and the second end of the first cable 311 and the second end of the second cable 312 converge at a point and are connected to the center column 10.

[0067] In the above embodiment, the cable reel 30 adopts a double-layer cable structure, the first cable 311 above is connected above the giant truss frame 20, the second cable 312 below is connected below the truss frame 20, the center of the first cable 311 and the second cable 312 converges at a point and is connected to the center column 10, which has greater overall rigidity and higher carrying capacity than a single cable.

[0068] In some embodiments, the truss frame 20 is a rectangular ring truss structure, the truss frame 20 includes an upper chord 21 and a lower chord 22 arranged in an upper-lower manner, the first cable 311 is connected to the upper chord 21, and the second cable 312 is connected to the lower chord 22.

[0069] In the above embodiment, the truss frame 20 is composed of a quadrilateral rectangular truss, has large torsional stiffness, and the first cable 311 is connected to the upper chord 21 of the truss frame, and the second cable 312 is connected to the lower chord 22 of the truss frame, so that the truss frame 20 can be tensioned from the upper and lower sides, has larger overall stiffness and higher bearing capacity.

[0070] Specifically, as shown in Figure 4 、 Figure 6 、 Figure 7 , the upper chord 21 and the lower chord 22 are both annular rod structures, the two groups of upper chords 21 and the two groups of lower chords 22 form a double-ring structure corresponding in upper and lower directions, and the upper chord 21 and the lower chord 22 form an inner ring and an outer ring in pairs corresponding in upper and lower directions, the first cable 311 is connected to the upper chord 21 located in the inner ring, and the second cable 312 is connected to the lower chord 22 located in the inner ring.

[0071] Further, as shown in Figure 4 、 Figure 7 , the truss frame 20 further includes a plurality of groups of connecting trusses arranged in sequence in the circumferential direction, the connecting truss includes two horizontal web members 26 connected between the two upper chords 21 and the two lower chords 22, respectively, and four vertical web members 23 connected between the upper chord 21 and the lower chord 22 and the two horizontal web members 26, the four vertical web members 23 form a three-dimensional rectangular frame with the two horizontal web members 26 and the two upper chords 21 and the two lower chords 22, the connecting truss further includes two flat inclined rods 24 and four vertical inclined rods 25, wherein the two flat inclined rods 24 are inclinedly connected to the opposite corner points of the upper and lower sides of the rectangular frame, and the four vertical inclined rods 25 are inclinedly connected to the opposite corner points of the four sides of the rectangular frame. By using the above design, the truss frame 20 has higher overall structural stiffness and stability.

[0072] Preferably, in the present embodiment, the first cable 311 is connected to the intersection of the horizontal web member 26, the vertical web member 23 and the upper chord 21, and the second cable 312 is connected to the intersection of the horizontal web member 26, the vertical web member 23, the lower chord 22 and the vertical inclined rod 25, so that the structural strength of the node is higher and the connection is more convenient.

[0073] In some embodiments, the cable 31 is anchored at one end to the central column 10 and tensioned at the other end to the truss frame 20.

[0074] In the above embodiment, the cable 31 is tensioned on the outside of the giant truss frame 20 and anchored on the upper side of the central column 10, and by applying prestress, the giant truss frame 20 is in compression and the central column 10 is in tension, like a bicycle wheel, has high stiffness and bearing capacity, and plays a role in improving the overall structural stiffness.

[0075] In some embodiments, in combination withFigure 1 、 Figure 8 、 Figure 9 As shown in FIG. 1, the central column 10 comprises a plurality of horizontal support members 11 and a plurality of vertical support members 12, wherein the plurality of horizontal support members 11 are arranged along the height direction of the cooling tower, and each horizontal support member 11 comprises a ring beam 111 and a plurality of cross beams 112 connected in the ring beam 111; the plurality of vertical support members 12 are arranged along the circumference of the ring beam and are connected and fixed with the ring beam to fix the plurality of horizontal support members 11 integrally; one end of the cable 31 is anchored on the ring beam 111, and the other end is connected with the truss frame 20.

[0076] In the above embodiment, the central column 10 is arranged in the center of the tower body and comprises a plurality of horizontal support members 11 and a plurality of vertical support members 12. The horizontal support member 11 is further improved in overall rigidity by the ring beam 111 and the plurality of cross beams 112 arranged in the ring beam 111, so as to further improve the load bearing capacity of the central column 10 to the dead load and wind load of the entire steel tower.

[0077] Specifically, the vertical support member 12 is a support column, and a plurality of support columns are arranged along the circumference of the ring beam 111 and are fixed with the ring beam 111.

[0078] In some embodiments, the cross section of the ring beam 111 is circular, and the cross beam 112 passes through the center of the ring beam 111.

[0079] In the above embodiment, the ring beam 111 adopts a component with a circular cross section, which is more uniform in stress and can further increase the compressive bearing capacity of the central column 10.

[0080] In some embodiments, the central column 10 further comprises a plurality of inclined support members 13, the inclined support members 13 are inclinedly connected between the ring beams 111 of two adjacent horizontal support members 11, and the inclined support members 13 meet the ring beams 111 and the cross beams 112 at one point.

[0081] In the above embodiment, the central column 10 is further improved in overall rigidity by the plurality of inclined support members 13 arranged thereon, which are inclinedly connected between the ring beams 111 of two adjacent horizontal support members 11, so as to greatly improve the load bearing capacity of the central column 10 to the dead load and wind load of the entire steel tower.

[0082] Specifically, the diagonal support member 13 is a diagonal rod obliquely connected between two adjacent ring beams 111 and two adjacent vertical support members 12 to form a diagonal line of a rectangular frame. Preferably, each layer of horizontal support members 11 is provided with a plurality of diagonal support members 13, and the plurality of diagonal support members 13 are arranged between two adjacent ring beams 111, and the number of diagonal support members 13 is consistent with the number of vertical support members 12, and the diagonal support members 13 are connected on the diagonal lines of the rectangular frames formed between two adjacent ring beams 111 and two adjacent vertical support members 12 in one-to-one correspondence.

[0083] In some embodiments, in combination with Figures 1 to 3 As shown, the cooling tower further comprises a plurality of cable nets 40, the cable nets 40 are annular, and the cable nets 40 comprise first cable nets 41 connected between two adjacent truss frames 20 at both ends in tension and second cable nets 42 connected between the bottommost truss frame 20 and the ground at both ends in tension.

[0084] In the above embodiment, through the cable nets 40 arranged around the tower body, the cable nets 40 comprise not only the first cable nets 41 arranged between the truss frames 20, but also the second cable nets 42 connected between the bottom of the truss frame 20 and the ground, so that not only the overall tower body can be supported, but also the cable nets 40 can be used as a force structure to bear the self-weight and wind load of the external enclosure structure, increase the torsional stiffness of the structure, prevent the tower body from twisting under the action of asymmetric wind load, and further improve the stability of the tower body.

[0085] In some embodiments, the cooling tower further comprises an enclosure structure, which is wrapped outside the cable nets 40 and the truss frames 20, and the enclosure structure can adopt two forms of metal panels and membranes.

[0086] In some embodiments, the cable nets 40 comprise at least two groups of horizontal ring cables 401, a plurality of vertical cables 402, and a plurality of diagonal cables 403, the at least two groups of horizontal ring cables 401 are arranged in the height direction of the cooling tower; the plurality of vertical cables 402 are arranged in the circumferential direction of the horizontal ring cables 401 and are connected and fixed with the horizontal ring cables 401 to fix the at least two groups of horizontal ring cables 401 integrally; both ends of the vertical cable 402 extend out of the horizontal ring cable 401, and the diagonal cable 403 is obliquely connected between the end of the vertical cable 402 and the connection point between the vertical cable 402 and the horizontal ring cable 401 and between the two connection points on the diagonal line of the vertical cable 402 and the horizontal ring cable 401.

[0087] In the above embodiment, the cable net 40 is composed of horizontal ring cables 401, vertical cables 402 and diagonal cables 403. The vertical cables 402 are in negative curvature shape relative to the horizontal ring cables 401, and bear the self-weight and wind load of the enclosure structure. The diagonal cables 403 mainly serve to increase the torsional stiffness of the structure, and prevent the structure from torsion under asymmetric wind load.

[0088] Optionally, in the embodiment, each cable net 40 includes two horizontal ring cables 401, and the two ends of each vertical cable 402 extend out of the two horizontal ring cables 401. The diagonal cable 403 obliquely spans the two horizontal ring cables 401 and the two vertical cables 402, and passes through the opposite corners of the two horizontal ring cables 401 and the two vertical cables 402. The diagonal cable 403 is connected at one end to one side end of the first vertical cable 402, and at the other end to the other side end of the third vertical cable 402. The multiple diagonal cables 403 have the same oblique direction.

[0089] In some embodiments, the bottom of the cable net 40 is anchored to the ground.

[0090] In the above embodiment, the two ends of each vertical cable 402 extend out of the horizontal ring cable 401, and the two ends of the diagonal cable 403 converge to the same point as the two ends of the vertical cable 402. This facilitates the anchoring of the bottom of the second cable net 42 to the ground, and the cable net 40 is anchored to the ground in a fixed and stable manner.

[0091] In some embodiments, the cable net 40 has a single-layer cable net or a double-layer cable net structure. In the embodiment, the cable net 40 has a single-layer cable net or a double-layer cable net structure. In the drawings of the embodiment, the cable net 40 has a single-layer cable net structure.

[0092] Preferably, the cable net 40 has a double-layer cable net structure. Compared with a single-layer cable net, the double-layer cable net has higher bearing capacity, and further improves the torsional resistance of the cooling tower.

[0093] The embodiment provides a cooling tower in the form of a combination of a cable tray 30 and a truss frame 20, which includes a central column 10, a giant truss frame 20, a cable net 40 and the cable tray 30. The central column 10 bears the vertical load of the self-weight of the tower, and serves to anchor the cable tray 30. The giant truss frame 20 is arranged on the tower body, and the cable net 40 is arranged between the truss frames 20 and between the truss frame 20 and the ground. Compared with existing cooling tower structures, the cooling tower provided by the embodiment has the advantages of fewer components, fast construction speed and high structural bearing capacity.

[0094] In combination with FIGS. 1 to 3, Figure 1 , Figure 10 , Figure 11 The cooling tower structural system provided by the embodiment can be applied to both hyperbolic steel structure cooling towers and straight-tube-cone-section steel structure cooling towers.

[0095] While embodiments of the present application have been described in conjunction with the appended drawings, various modifications and changes are possible within the spirit and scope of the present application, and such modifications and changes are intended to fall within the scope of the appended claims.

Claims

1. A cooling tower, characterized in that: include: A central column (10), the bottom of which is fixed to the ground; A plurality of closed truss frames (20) are arranged at intervals along the height direction of the cooling tower, and the central column (10) is located at the center of the truss frame (20); A plurality of cable trays (30) are connected between the plurality of truss frames (20) and the central column (10), the cable trays (30) comprising a plurality of groups of cables (31) radially distributed relative to the central column (10), and two ends of each group of cables (31) are tensioned and connected between the central column (10) and the truss frame (20); A plurality of cable nets (40), the cable nets (40) being ring-shaped, the cable nets (40) comprising a first cable net (41) having two ends tensionedly connected between two adjacent truss frames (20), and a second cable net (42) having two ends tensionedly connected between the bottom truss frame (20) and the ground; The cable tray (30) is composed of a double-layer cable system, and each group of cables (31) includes a first cable (311) and a second cable (312). The first end of the first cable (311) is connected to the top of the truss frame (20), the first end of the second cable (312) is connected to the bottom of the truss frame (20), and the second end of the first cable (311) and the second end of the second cable (312) meet at one point and are connected to the central column (10); The truss frame (20) is a rectangular ring truss structure, and the truss frame (20) includes an upper chord (21) and a lower chord (22) arranged vertically, the first cable (311) is connected to the upper chord (21), and the second cable (312) is connected to the lower chord (22); The central column (10) comprises: A plurality of horizontal support members (11) are arranged at intervals along the height direction of the cooling tower, wherein the horizontal support members (11) include an annular beam (111) and a plurality of cross beams (112) connected within the annular beam (111); A plurality of vertical support members (12) are arranged at intervals along the circumference of the annular beam (111), and are all connected and fixed to the annular beam (111) to fix the plurality of horizontal support members (11) together; One end of the cable (31) is anchored to the annular beam (111), and the other end is connected to the truss frame (20); The cable net (40) comprises: At least two groups of horizontal loop ropes (401) are arranged at intervals along the height direction of the cooling tower; A plurality of vertical cables (402) are arranged at intervals along the circumference of the horizontal ring cables (401) and are all connected and fixed to the horizontal ring cables (401) to fix the at least two groups of horizontal ring cables (401) into one; A plurality of oblique cables (403), both ends of the vertical cable (402) extend from the horizontal ring cable (401), and the oblique cables (403) are obliquely connected between the ends of the vertical cables (402) and the connection points of the vertical cables (402) and the horizontal ring cable (401), and between two connection points on the diagonal lines of the vertical cables (402) and the horizontal ring cable (401).

2. The cooling tower according to claim 1, wherein One end of the cable (31) is anchored on the central column (10), and the other end is tensioned on the truss frame (20).

3. The cooling tower according to claim 1, wherein The cross section of the annular beam (111) is circular, and the cross beam (112) passes through the center of the annular beam (111).

4. The cooling tower according to claim 1, wherein The central column (10) further comprises: A plurality of oblique support members (13) are obliquely connected between the annular beams (111) of two adjacent horizontal support members (11), and the oblique support members (13), the annular beams (111) and the cross beams (112) converge at one point.

5. The cooling tower according to claim 1, wherein The bottom of the cable net (40) is anchored on the ground; And / or, the cable net (40) adopts a single-layer cable net or a double-layer cable net structure.

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