Hyperbolic cooling tower with hybrid ventilation and high-level water collection

Abstract

The present invention discloses a hybrid ventilation high-level water collection cooling tower, which comprises a tower barrel, tower supports, a water splashing ring plate, a stepped conical hopper water tank and a tower core support; the tower barrel is supported by the tower supports, and the tower core is arranged inside the tower barrel; a water splashing ring plate is arranged at the lower part of the inner wall of the tower barrel; a stepped conical hopper water tank is arranged below the water splashing ring plate, and a water outlet shaft is arranged at the center of the stepped conical hopper water tank; the tower core support passes through the water outlet shaft; the stepped conical hopper water tank comprises a conical hopper water tank, a wind guide well, a water shielding cap and a fan, a plurality of through wind guide wells are arranged on the conical hopper water tank, the fan is arranged in the wind guide well, and the water shielding cap is arranged on the wind guide well. The hybrid cooling tower not only maintains the advantages of the high-level water collection cooling tower, such as energy saving, noise reduction, cold air can reach the center of the tower and can significantly reduce the cavitation of the water pump, but also realizes the automatic and uniform distribution of cold air, and at the same time has the function of the fan to assist ventilation.

Description

Technical Field

[0001] The present invention belongs to the technical field of cooling tower design, and particularly relates to a high-level water collecting cooling tower with hybrid ventilation. Background Art

[0002] Conventional natural draft hyperbolic reinforced concrete cooling towers achieve the cooling of hot water through hydraulic balance, air resistance balance, and thermal energy and power balance.

[0003] The Hamon Company in Belgium created the Hamon cooling tower with high level water collecting device by transforming the collecting pond of a conventional tower and adding high-level water collecting inclined plates and high-level water collecting troughs, and it has been widely applied in inland nuclear power plants in France. This high-level water collecting cooling tower can be simply referred to as the Hamon high tower to distinguish it from the conventional tower (Normal cooling tower).

[0004] Compared with the conventional tower, the Hamon high tower has the advantages of energy conservation, low noise, cold air can directly reach the tower center, and can significantly reduce the cavitation of the water pump. The Hamon high tower achieves the goal of high-level water collection by building and installing a very complex water collection device, changing the falling path of the water in the rain area of the cooling tower and the rising path of the air, but the cost is that the investment increases. For example, for the 12,000 m 2 Hamon high tower of the same cooling efficiency as the 14,000 m 2 conventional tower, the initial investment increases by about 38.61 million yuan (calculated based on imported tower core components); for the 10,200 m 2 Hamon high tower compared with the 12,000 m 2 conventional tower with the same cooling efficiency, the investment is 28.5 million yuan more (calculated based on domestic materials for the tower core part); for the 9,500 m 2 Hamon high tower of Anhui Hefei Lujiang Power Plant, the investment is 18 million yuan more than that of the conventional tower (calculated based on domestic materials for the tower core). The investment of the Hamon high tower is higher than that of the conventional tower, and the extra investment can generally be compensated for by the energy conservation of the water pump within 5 years.

[0005] By grafting the layout characteristics of the air-cooled tower of the South African Kedal Power Plant onto the Hamon high tower, a balanceding cooling tower, abbreviated as the eight-high tower, was invented. The eight-high tower maintains the advantages of the high tower in energy conservation and consumption reduction, noise prevention, etc., and overcomes the deficiency of the large investment of the Hamon high tower. Compared with the Hamon high tower, the eight-high tower does not have a high-level water collection device (water collection inclined plates and water collection troughs), and at the same time, it changes the shape and size of the high-level collecting pond of the Hamon high tower into a smooth, flat and shallow conical hopper pond with a wind guiding well.

[0006] Mr. Yu Qiujiang from the Cooling Equipment Branch of the General Machinery Industry Association believes that the eight-tower cooling tower is not just about changing the shape of the collecting basin. Instead, it represents a revolutionary innovation in high-level water collection. It not only achieves hydraulic balance, thermal balance, and air resistance balance in the cooling tower but also realizes energy conservation, low noise, and uniform air intake for the packing. Furthermore, it makes it easier to replace the packing, simplifies anti-freezing measures, and eliminates the need for internal and external water distribution.

[0007] It can be considered that the eight-tower cooling tower is a core-replaced version of the H-type cooling tower (the part above the splash packing can remain unchanged).

[0008] It can also be considered that the eight-tower cooling tower is a basin-replaced version of the conventional cooling tower. Applying it to waste power generation, biomass power generation, thermal power plants, and inland nuclear power plants will achieve good economic benefits.

[0009] The high-level water collection cooling tower with hybrid ventilation is an improved version of the eight-tower cooling tower. On the premise of maintaining natural ventilation, mechanical forced draft is added. Summary of the Invention

[0010] To solve the problem of the high cost of the H-type cooling tower and overcome its technical defects such as easy water splashing and difficulty in replacing the packing, the present invention provides a high-level water collection cooling tower with hybrid ventilation. By removing the high-level water collection tank and the water collection inclined plate of the H-type cooling tower, and simultaneously building a stepped hopper-shaped collecting basin and a wind guide well and adding a booster fan, a high-level water collection cooling tower with hybrid ventilation is constructed, which is abbreviated as the "hybrid tower".

[0011] To achieve the above object, the present invention adopts the following technical solutions:

[0012] A high-level water collection cooling tower with hybrid ventilation, comprising a tower barrel, tower supports, a water splashing ring plate, a stepped hopper-shaped water basin, and a tower core support.

[0013] The tower barrel is supported by the tower supports, and the tower core is arranged inside the tower barrel; a water splashing ring plate is arranged at the lower part of the inner wall of the tower barrel; a stepped hopper-shaped water basin is arranged below the water splashing ring plate, and a water outlet shaft is arranged at the center of the stepped hopper-shaped water basin; the tower core support passes through the bottom plate of the stepped hopper-shaped water basin.

[0014] The stepped hopper-shaped water basin includes a hopper-shaped water basin, a wind guide well, a water shielding cap, and a fan. A plurality of through wind guide wells are arranged on the hopper-shaped water basin, the fan is arranged inside the wind guide well, and a water shielding cap is arranged at the upper end of the wind guide well.

[0015] As a further improvement of the present invention, the hopper-shaped water basin includes a water basin wall, a ring beam serving as a vertical wall and a water basin bottom plate, the water basin wall, the ring beam serving as a vertical wall and the water basin bottom plate are connected in sequence, and a plurality of the wind guide wells are uniformly arranged in a ring on the water basin bottom plate.

[0016] As a further improvement of the present invention, the bottom plate of the water pool is a stepped annular structure, and multiple circles of bottom plates of the water pool from outside to inside decrease in height in sequence and are connected in sequence. The innermost bottom plate of the water pool is connected to the water outlet shaft. The depths of multiple air guide wells from outside to inside increase in sequence, and the tops of all the air guide wells are at the same horizontal plane.

[0017] As a further improvement of the present invention, the bottom plate of the water pool is a two-step structure. Among the adjacent annular bottom plates of the water pool, the second step of the outer bottom plate is at the same height as the first step of the inner bottom plate.

[0018] As a further improvement of the present invention, the water shielding cap is composed of a spherical dome cover and laminated air outlets. Drip lines are arranged at the lowest part of the dome cover and the lowest part of each laminated piece; at the second lowest part of the dome cover and the second lowest part of each laminated piece, not less than three uniformly distributed struts are provided to support the dome cover and the laminated pieces respectively; radial corrugations are arranged on the upper surfaces of the dome cover and the laminated pieces; the outer diameter of the outer edge of the lowest laminated piece is larger than the outer diameter of the air guide well.

[0019] As a further improvement of the present invention, it further includes a spiral disassembly track and a fan cylinder for installing and disassembling the fan;

[0020] Support bars are arranged along the axial direction on the outside of the spiral disassembly track, and internal teeth are arranged on the inner wall of the spiral disassembly track; the spiral disassembly track is a spring-type internal thread track;

[0021] The inside of the fan cylinder is used to place the fan. External threads of the fan cylinder are arranged on the outside of the fan cylinder, and a driving motor and a gear are arranged on the side wall of the fan cylinder; the gear meshes with the internal teeth; the external threads of the fan cylinder are in fit connection with the inner wall of the spiral disassembly track.

[0022] As a further improvement of the present invention, a locking device for locking the fan cylinder is arranged in the air guide well;

[0023] The outer diameter of the spiral disassembly track is smaller than the net inner diameter of the air guide well; the inner diameter of the spiral disassembly track is larger than the outer diameter of the fan cylinder, and can enable the external threads of the fan cylinder to rotate up and down along the spiral disassembly track.

[0024] As a further improvement of the present invention, a fan bridge is arranged below the air guide well. The upper part of the fan is connected to the fan bridge, and a reduction gearbox and a motor for driving the fan are arranged on the fan bridge.

[0025] As a further improvement of the present invention, the water splashing ring plate is an inclined circular ring-shaped inclined plate arranged on the side wall of the tower cylinder body. Air guide holes and water shielding covers are arranged on the water splashing ring plate; the air guide holes are uniformly arranged on the water splashing ring plate, and water shielding covers are arranged above the air guide holes.

[0026] As a further improvement of the present invention, the tower cylinder is a thin-shell reinforced concrete hyperbolic structure.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] The present invention improves the smooth conical hopper water pool into a stepped conical hopper water pool, which will be particularly beneficial to the embedding of the air guide well and the support of the ring beam and columns, becoming an upgraded eight-tower Pagoda. An axial flow fan is installed in the air guide well to blow air, making the eight-tower become a high-position water collection cooling tower with mixed ventilation, that is, a mixed tower. The tower core includes a water eliminator and its supporting beam system; a water distribution trough, a water distribution pipe and a sprinkler head; a splash packing and its supporting beam system; a stepped conical hopper water pool, an air guide well, a water shielding cap and an axial flow fan, etc. The mixed tower not only maintains the advantages of the high-position water collection cooling tower of "energy saving, noise reduction, cold air can reach the center of the tower and can significantly reduce the cavitation of the water pump", but also realizes the automatic and uniform distribution of cold air: the cold air entering the tower from the upper part flows to the periphery, and the cold air close to the ground flows to the inner periphery of the tower, and at the same time, it also has the function of a fan to assist ventilation. Description of the Drawings

[0029] Figure 1 Cross-sectional view and elevation view of the mixed tower;

[0030] Figure 2 Aerial view of the stepped conical hopper water pool; for the sake of clear expression, the beams and columns supporting the water pool and the upper structure of the water pool are not drawn in this figure, nor is the fan in the air guide well drawn;

[0031] Figure 3 Top view of the stepped conical hopper water pool. Axial flow fans are installed only in a part of the air guide wells; the wall thickness of the pool wall and the wall thickness of the air guide well are simplified to 0 and represented by a single line;

[0032] Figure 4 I-I cross-sectional view of the tower core, corresponding to Figure 5 ;

[0033] Figure 5 Large-scale drawing of the first quadrant of the mixed tower, see the whole drawing in Figure 3 ;

[0034] Figure 6 Schematic diagram of the ventilation water shielding cap, air guide well wall and axial flow fan;

[0035] Figure 7 Schematic diagram of the spiral disassembly track, (a) is the structural schematic diagram, and (b) is the dimension relationship diagram.

[0036] The description of the components in the drawings is as follows:

[0037] Table 1 Description of the components in the drawings

[0038]

[0039] Specific implementation manner

[0040] In order to solve the problem of the high cost of the Hata tower and overcome its technical defects such as easy water splashing and difficulty in replacing packing, by removing the high-level water collection trough and the water collection inclined plate of the Hata tower, while additionally building a stepped conical hopper water collection pool and a wind guide well, and further adding a booster fan, a high-level water collection cooling tower with hybrid ventilation is constructed, which is abbreviated as the "hybrid tower".

[0041] When applying a natural ventilation cooling tower in high-temperature and humid areas, it is very difficult to achieve an ideal cooling effect only by natural ventilation in the four months of June, July, August, and September every year. An axial flow fan (fan) is needed to assist ventilation, which has given rise to the hybrid tower.

[0042] After the high-temperature and humid summer, the fan can be removed and moved away, and installed again when needed in the coming year. The advantage of the hybrid tower is that it is extremely convenient to install and remove the fan, and it can ensure that the fan always works in a dry environment, and the fan already applied in the direct air-cooled system of thermal power can be installed.

[0043] The cold air of the Hata tower first passes between the high-level water collection troughs, and then reaches the lower part of the water spraying packing through the gaps between the water collection inclined plates; the cold air of the hybrid tower first flows through the wind guide well, and then reaches the lower part of the water spraying packing after flowing around the water shielding cap.

[0044] The hybrid tower retains the characteristics of the Hata tower with a high-level water collection pool, changes the rectangular upper opening of the pool into a circular upper opening, becomes a stepped conical funnel-shaped pool, and there is a wind guide well passing through the pool from bottom to top. The top of the wind guide well is higher than the highest water level of the pool, and the wind guide well is equipped with a water shielding cap to prevent cold water from leaking out of the wind guide well.

[0045] The hybrid tower is the "core-replaced tower" of the Hata tower. The biggest highlight of the hybrid tower is that its total investment is lower than that of the Hata tower, and the air distribution is uniform, improving the cooling efficiency, and it is suitable for use in the high-temperature and humid southern region of China.

[0046] The hybrid tower has three key factors different from conventional towers and the Hata tower: one is the high-level stepped conical hopper water pool, another is the wind guide well suspended on the bottom plate of the conical hopper water pool, and the other is the mechanical forced ventilation assistance.

[0047] Such as Figure 1As shown in the figure, the present invention provides a high-level water collection cooling tower with a hybrid ventilation mainly based on natural ventilation and assisted by mechanical ventilation, including a tower cylinder 1, tower supports 2, a water splashing ring plate 23, and a tower core consisting of a component pressure inlet ditch 3, a pressure outlet ditch 4, an outlet vertical shaft 5, a pool wall 6, a pool bottom plate 7, a fan 8, a packing layer beam 9, a water spraying packing 10, a spray head 11, a demister layer beam 12, a demister 13, a fan bridge 14, a water distribution vertical shaft 15, a laminated air outlet 16, an inner peripheral water distribution trough 17, an outer peripheral water distribution trough 18, a water distribution pipe 19, a ventilation pipe 20, a wind guide well 21, a water shielding cap (or top cover) 22, a water splashing ring plate 23, a cast iron grate 24, a conical hopper water surface level 25, a cold air flow direction 26, a water inlet flow direction 27, a water outlet flow direction 28, a water level in the vertical shaft 29, a tower core support 30, a ring beam and a vertical wall 31, etc.

[0048] The tower core of the hybrid cooling tower is located at the inner bottom of the tower shell. The tower core from top to bottom is successively:

[0049] A demister and its supporting beam system;

[0050] A water distribution trough, a water distribution pipe and a spray head (the water distribution pipe and the spray head are hung under the demister supporting beam system);

[0051] A water spraying packing and its supporting beam system;

[0052] A conical hopper water tank, a wind guide well and a water shielding ventilation cap;

[0053] And a water distribution vertical shaft, an outlet well and a tower core support ( Figure 4 Component 30), etc.

[0054] The tower cylinder 1 is supported by the tower supports 2, and the tower core is arranged inside the tower cylinder 1; a water splashing ring plate 23 is arranged at the lower part of the inner wall of the tower cylinder 1; a stepped conical hopper water tank is arranged below the water splashing ring plate 23, and an outlet vertical shaft 5 is arranged at the center of the stepped conical hopper water tank; the tower core support 30 passes through the outlet vertical shaft 5;

[0055] The stepped conical hopper water tank includes a conical hopper water tank, a wind guide well 21, a water shielding cap 22 and a fan 8. A plurality of through wind guide wells 21 are arranged on the conical hopper water tank, the fan 8 is arranged inside the wind guide well 21, and the water shielding cap 22 is arranged on the wind guide well 21.

[0056] The tower cylinder 1 is a thin-shell reinforced concrete hyperbolic structure, which can form a thermal floating effect like a chimney; the tower cylinder 1 is supported by the tower supports 2; the lower part of the tower cylinder 1 gives birth to the water splashing ring plate 23.

[0057] The water-lifting ring plate 23 is an inclined circular ring-shaped inclined plate rooted on the tower body 1, which lifts the water flow into the cone bucket pool, and has the function of preventing the surface water flow from continuing to flow down along the inner wall of the cooling tower. The water-lifting ring plate 23 is an inclined circular ring-shaped inclined plate set on the side wall of the tower body 1, and is provided with air guide holes and water shielding covers; the air guide holes are evenly arranged on the water-lifting ring plate 23, and a water shielding cover is set above the air guide holes. The structure of the air guide holes and the water shielding cover is the same as that of the air guide shaft 21 and the water shielding cap 22.

[0058] There are three key factors that make the mixed-height tower different from conventional towers and high-rise towers: one is the high-level stepped cone water pool, another is the air guide shaft suspended on the bottom plate of the cone water pool, and the other is mechanical air blowing to assist ventilation.

[0059] like Figures 2 to 4 As shown, the conical bucket water pool includes a water pool wall 6, a ring beam and a vertical wall 31, and a water pool bottom plate 7. The water pool wall 6, the ring beam and a vertical wall 31 are connected to the water pool bottom plate 7 in sequence, and a plurality of the air guide shafts 21 are evenly arranged in a ring shape on the water pool bottom plate 7.

[0060] The pool bottom plate 7 is a stepped annular structure, and the heights of the multiple circles of pool bottom plates 7 from the outside to the inside are successively reduced and connected in sequence, the innermost pool bottom plate 7 is connected to the water outlet shaft 5, and the depths of the multiple air guide shafts 21 from the outside to the inside increase successively and the tops of all air guide shafts 21 are on the same horizontal plane.

[0061] The pool bottom plate 7 is a two-step structure. In two adjacent annular pool bottom plates, the second step of the outer pool bottom plate is at the same height as the first step of the inner pool bottom plate.

[0062] The stepped cone water pool bottom plate 7, air guide shaft 21, water shielding cap 22 and fan 8 in the tower core not only enable the mixed height tower to maintain the advantages of high-position water collection cooling tower "energy saving, noise reduction, cold air can reach the center of the tower and can significantly reduce water pump cavitation", but also realize the automatic and uniform distribution of cold air: the cold air entering the tower from the upper part flows to the periphery, and the cold air close to the ground flows to the inner periphery of the tower, and at the same time has the ability of fans to help ventilation.

[0063] The stepped cone bucket water pool is mainly composed of the pool wall 6, the ring beam and vertical wall 31 and the pool bottom plate 7, and is in the shape of a stepped shallow water funnel. The pool bottom plate 7 is penetrated by multiple air guide shafts 21; the pool and the water spraying filler 10 and the water remover 13 and other components are supported by the tower core pillar 30, which are first supported on the pool wall 6 and the vertical wall 31. The cone bucket water pool can ensure that the water body flows to the water outlet shaft 5 by gravity, and can limit the cone bucket water surface level 25 to a higher position, storing corresponding potential energy.

[0064] In the air guide shaft 21, the cylindrical hollow air guide shaft 21 is supported by the stepped pool bottom plate 7. A water shielding cap 22 is provided at the upper end of the air guide shaft 21 to guide the cold air to the lower part of the cooling tower water distribution filler 10, and a spiral disassembly track 32 can be optionally configured.

[0065] The water shielding cap 22 is a structure that can ventilate and prevent the falling water from flowing away from the air guide shaft 21. The water shielding cap 22 is composed of a spherical dome cover and a laminated air outlet 16. Drip lines are designed at the lowest part of the dome and the lowest part of each lamination to prevent the generation of backward hook water flow. At the second lowest part of the dome and the second lowest part of each lamination, no less than 3 evenly distributed struts are provided to support the dome and the lamination respectively. Radial corrugations are designed on the upper surfaces of the dome and the lamination to organize the water flow into strands to reduce the air outlet resistance.

[0066] The fan 8 always operates in a dry environment. The fan 8 uses an axial flow fan.

[0067] The fan bridge 14 is fixed below the inside of the air guide shaft 21. First, the fan bridge is hung into the inner wall of the air guide shaft, then rotated into place, and finally fixed with nuts and bolts. Bolts are pre-embedded on the inner wall of the air guide shaft. The fan, reduction gearbox, motor, etc. are all installed on the fan bridge.

[0068] It also includes a spiral disassembly track 32 and a fan cylinder 32-3 for installing and disassembling the fan 8;

[0069] A brace 32-1 is axially arranged on the outside of the spiral disassembly track 32, and internal teeth 32-2 are arranged on the inner wall of the spiral disassembly track 32; the spiral disassembly track 32 is a spring-type internal thread track;

[0070] The fan cylinder 32-3 is used to place the fan 8. An external thread 32-4 of the fan cylinder is arranged on the outside of the fan cylinder 32-3, and a drive motor and a gear 32-5 are arranged on the side wall of the fan cylinder 32-3; the gear 32-5 meshes with the internal teeth 32-2; the external thread 32-4 of the fan cylinder is in fit connection with the inner wall of the spiral disassembly track 32.

[0071] A locking device for locking the fan cylinder 32-3 is arranged in the air guide shaft 21; the outer diameter of the spiral disassembly track 32 is smaller than the net inner diameter of the air guide shaft 21; the inner diameter of the spiral disassembly track 32 is larger than the outer diameter of the fan cylinder 32-3, and can enable the external thread 32-4 of the fan cylinder to rotate and slide along the spiral disassembly track 32.

[0072] The spiral disassembly track 32 is an optional part and does not enter the air guide well. It is only connected to the internal thread track embedded in the air guide well with bolts. The fan cylinder 32-3 can be locked in the air guide well. The fan cylinder 32-3 is the support frame for the operation of the fan, and also the track for sending the whole fan 8 into the air guide well, and still the track for lowering the whole fan to the ground. The spiral disassembly track 32 is composed of several sections and is a movable track, which is used for the upward installation of all fans, the maintenance and disassembly after being lowered to the ground, etc.

[0073] The spiral disassembly track 32 is an optional part different from the water diversion ring plate 23. The water diversion ring plate 23 is an inclined circular ring-shaped inclined plate arranged on the side wall of the tower cylinder 1, and air guide holes and water shielding covers are arranged on the water diversion ring plate 23; the air guide holes are evenly arranged on the water diversion ring plate 23, and water shielding covers are arranged above the air guide holes. The spiral disassembly track 32 does not enter the air guide well and is only connected to the internal thread track embedded in the air guide well with bolts. The fan cylinder 32-3 can be locked in the air guide well. The fan cylinder 32-3 is the support frame for the operation of the fan, and also the track for sending the whole fan 8 into the air guide well through the spiral disassembly track 32, and the fan cylinder 32-3 is still the track for lowering the whole fan to the ground. The spiral disassembly track 32 is composed of several sections and is a movable track, which is used for the upward installation of all fans, the maintenance and disassembly after being lowered to the ground, etc.

[0074] Embodiment

[0075] If the high tower of a single 1000MW generating unit in Jiangxi Jiujiang Power Plant is changed to the solution of this invention application, the data of the hybrid high tower are as follows in the table:

[0076] Table 2 Data table of the hybrid high tower in Jiangxi Jiujiang Power Plant

[0077]

[0078]

[0079]

[0080] The high tower in Jiangxi Jiujiang Power Plant has been built and put into operation. Table 2 is an embodiment of the hybrid high tower of this invention, in which the data of the tower shell, etc. are exactly the same as those of the high tower (i.e., the data of serial numbers J1-J25, J44-J48, J54-J60 in the above table). If Jiujiang Power Plant does not adopt the high tower but uses this hybrid high tower instead, 30 million yuan of investment can be saved for each tower.

[0081] Building the hybrid high tower of this embodiment in Jiujiang Power Plant saves more investment than building a 13000m with the same cooling effect 2The conventional tower also saves 3 million yuan in investment. The reason is that the total cost of the conical hopper water tank and the fan of the hybrid high tower is 17 million yuan, and the cost of the cylindrical water tank (with a diameter 4 meters larger than the bottom diameter of the tower) of the conventional tower sunk into the ground is 20 million yuan.

[0082] Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, the present invention is not limited to the above specific implementation. The above specific embodiments are merely illustrative and guiding solutions, rather than restrictive solutions. Under the inspiration of this specification, those of ordinary skill in the art can also make several variant forms without departing from the scope protected by the claims of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A high-level water collection cooling tower with hybrid ventilation, characterized in that, It includes a tower cylinder body (1), tower support columns (2), a water - deflecting ring plate (23), a stepped conical - hopper water tank, and a tower core support column (30); The tower cylinder body (1) is supported by the tower support columns (2), and the tower core is arranged inside the tower cylinder body (1); a water - deflecting ring plate (23) is arranged at the lower part of the inner wall of the tower cylinder body (1); a stepped conical - hopper water tank is arranged below the water - deflecting ring plate (23), and a water outlet shaft (5) is arranged at the center of the stepped conical - hopper water tank; the tower core support column (30) passes through the bottom plate (7) of the stepped conical - hopper water tank; The stepped conical - hopper water tank includes a conical - hopper water tank, a wind - guiding well (21), a water - shielding cap (22), and a fan (8). A plurality of through wind - guiding wells (21) are arranged on the conical - hopper water tank, the fan (8) is arranged inside the wind - guiding well (21), and a water - shielding cap (22) is arranged at the upper end of the wind - guiding well (21); The conical - hopper water tank includes a water tank wall (6), a ring beam and vertical wall (31), and a water tank bottom plate (7). The water tank wall (6), the ring beam and vertical wall (31), and the water tank bottom plate (7) are connected in sequence. A plurality of the wind - guiding wells (21) are uniformly arranged in a ring on the water tank bottom plate (7); The water tank bottom plate (7) is a stepped annular structure, and the heights of multiple rings of water tank bottom plates (7) from outside to inside decrease in sequence and are connected in sequence. The innermost water tank bottom plate (7) is connected to the water outlet shaft (5), and the depths of a plurality of wind - guiding wells (21) from outside to inside increase in sequence and the tops of all the wind - guiding wells (21) are at the same horizontal plane; The water tank bottom plate (7) of the conical - hopper water tank slopes towards the water outlet shaft (5).

2. A high - level water - collecting cooling tower with hybrid ventilation according to claim 1, wherein, The water tank bottom plate (7) is a two - level stepped structure. Among adjacent two annular water tank bottom plates, the second - level step of the outer water tank bottom plate is at the same height as the first - level step of the inner water tank bottom plate.

3. A high - level water - collecting cooling tower with hybrid ventilation according to claim 1, wherein, The water - shielding cap (22) is composed of a spherical dome cover and a laminated air outlet (16). Drip lines are arranged at the lowest part of the dome cover and the lowest part of each laminated sheet; at the second - lowest part of the dome cover and the second - lowest part of each laminated sheet, no less than three uniformly - distributed support columns are arranged to support the dome cover and the laminated sheets respectively; radial corrugations are arranged on the upper surfaces of the dome cover and the laminated sheets; the outer diameter of the lowest laminated sheet is larger than the outer diameter of the wind - guiding well (21).

4. A high - level water - collecting cooling tower with hybrid ventilation according to claim 1, wherein, It further includes a spiral disassembly track (32) and a fan cylinder (32 - 3) for installing and disassembling the fan (8); Support bars (32 - 1) are arranged axially on the outside of the spiral disassembly track (32), and internal teeth (32 - 2) are arranged on the inner wall of the spiral disassembly track (32); the spiral disassembly track (32) is a spring - type internal - thread track; The blower cylinder (32-3) is used to place a blower (8). An external thread of the blower cylinder (32-4) is provided outside the blower cylinder (32-3), and a driving motor and a gear (32-5) are provided on the side wall of the blower cylinder (32-3); the gear (32-5) meshes with an internal tooth (32-2); the external thread of the blower cylinder (32-4) is in fit connection with the inner wall of the spiral disassembly track (32).

5. The high-level water collecting cooling tower with hybrid ventilation according to claim 4, wherein a locking device for locking the blower cylinder (32-3) is provided in the air guiding well (21); the outer diameter of the spiral disassembly track (32) is smaller than the net inner diameter of the air guiding well (21); the inner diameter of the spiral disassembly track (32) is larger than the outer diameter of the blower cylinder (32-3), and can enable the external thread of the blower cylinder (32-4) to rotate and rise and fall along the spiral disassembly track (32).

6. The high-level water collecting cooling tower with hybrid ventilation according to claim 1, wherein a blower bridge (14) is provided below the air guiding well (21). The upper part of the blower (8) is connected to the blower bridge (14), and a reduction gearbox and a motor for driving the blower (8) are provided on the blower bridge (14).

7. The high-level water collecting cooling tower with hybrid ventilation according to claim 1, wherein the water splashing ring plate (23) is an inclined circular ring-shaped inclined plate provided on the side wall of the tower body (1). Air guiding holes and water shielding covers are provided on the water splashing ring plate (23); the air guiding holes are evenly arranged on the water splashing ring plate (23), and water shielding covers are provided above the air guiding holes.

8. The high-level water collecting cooling tower with hybrid ventilation according to claim 1, wherein the tower body (1) is a thin-shell reinforced concrete hyperbolic structure.

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