CN115143801A

CN115143801A - High-level water-collecting cooling tower with mixed ventilation

Info

Publication number: CN115143801A
Application number: CN202210815941.5A
Authority: CN
Inventors: 靳鹏; 汪伟; 曹淇; 杨若松; 杨护洲; 张晓斌
Original assignee: Northwest Electric Power Design Institute of China Power Engineering Consulting Group
Current assignee: Northwest Electric Power Design Institute of China Power Engineering Consulting Group
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-10-04

Abstract

The invention discloses a mixed ventilation high-position water collecting cooling tower which comprises a tower cylinder body, a tower support, a water raising ring plate, a step type cone bucket water pool and a tower core support, wherein the tower cylinder body is provided with a water inlet and a water outlet; the tower cylinder body is supported by the tower strut, and the tower core is arranged in the tower cylinder body; a water lifting ring plate is arranged at the lower part of the inner wall of the tower cylinder body; a step type conical hopper water pool is arranged below the water picking ring plate, and a water outlet vertical shaft is arranged in the center of the step type conical hopper water pool; the tower core strut penetrates through the water outlet vertical shaft; the stepped cone bucket water pool comprises a cone bucket water pool, air guide wells, water shielding caps and a fan, wherein the plurality of air guide wells which penetrate through the cone bucket water pool are arranged on the cone bucket water pool, and the fan is arranged in the air guide wells and is provided with the water shielding caps. The high mixing tower not only keeps the advantages that the high-level water receiving cooling tower has the functions of saving energy and reducing noise, cold air can reach the center of the tower and the cavitation of a water pump can be obviously reduced, but also realizes the automatic uniform distribution of the cold air, and simultaneously has the function of helping ventilation by a fan.

Description

High-level water-collecting cooling tower with mixed ventilation

Technical Field

The invention belongs to the technical field of cooling tower design, and particularly relates to a hybrid ventilation high-level water-collecting cooling tower.

Background

The conventional natural ventilation hyperbolic reinforced concrete cooling tower realizes the cooling of hot water through hydraulic balance, air resistance balance and thermal energy dynamic balance.

The Hamon type high-level water collecting cooling tower (Hamon top with high level water collecting device) is created by the Hamon harmon company in Belgium through modifying a water collecting tank of a conventional tower and adding a high-level water collecting inclined plate and a high-level water collecting groove, and is widely applied to inland nuclear power plants in France. This high level water recovery cooling may be referred to as a haohai tower to distinguish it from a conventional tower (Normal cooling tower).

Compared with the conventional tower, the Ha-Gao tower has the advantages of energy conservation, low noise, direct cold air to the tower core and remarkable reduction of water pump cavitation. The high tower achieves the aim of high-level water collection by changing the water falling path and the air rising path of a rain area of a cooling tower through constructing and installing a complicated water collecting device, but the cost is that the paid investment is increased. For example, an Anqing electric power plant 12000m ² The Hargo tower is 14000m equivalent to the cold effect ² The initial investment is increased by about 3861 ten-thousand dollars (calculated as the inlet core section) compared to a conventional column; jiangsu sentence capacity power plant 10200m ² The ratio of the height tower to the cooling efficiency is equivalent to 12000m ² The conventional tower investment is 2850 ten thousand yuan (the tower core part material is calculated according to the domestic material); 9500m of Anhui combined Feijiang power plant ² The investment of the high tower is 1800 ten thousand yuan more than that of the conventional tower (the tower core is calculated according to the domestic materials). The investment of the Harper tower is higher than that of the conventional tower, and the extra investment can be generally compensated within 5 years due to the energy conservation of a water pump.

The arrangement characteristics of air cooling towers of Kedal power plants in south Africa are grafted to the Harper tower, and an eight-atlas positioning tower (Balancing winding tower) is invented and is called the eight-high tower for short. The eight-high tower keeps the advantages of the high-order tower in the aspects of energy conservation, consumption reduction, noise prevention and control and the like, and overcomes the defect of overlarge investment of the haohao tower. Compared with the Hargo tower, the eight-high tower does not have a high-level water collecting device (a water collecting inclined plate and a water collecting groove), and simultaneously changes the shape and the size of a high-level water collecting pool of the Hargo tower into a smooth flat shallow conical hopper pool with an air guide shaft.

The cooling equipment of the general mechanical industry association is divided into the parts that the cooling equipment is thought by Mr. autumn and river, the eight-high tower is not only simple in shape of the water collecting tank but also revolutionarily innovated in high-position water collection, so that the hydraulic balance, the thermal balance and the air resistance balance of the cooling tower are realized, the energy-saving low noise and the uniform air inlet of the filler of the cooling tower are realized, the convenience in replacement of the filler is further realized, and the vision of peripheral water distribution inside and outside the cooling tower is simple and easy to prevent freezing and is not needed.

It is considered that the octagon column is a core-exchange column of the haohga column (the part above the trickle packing may be kept unchanged).

It can also be considered that the eight-high column is a conventional column-changing pool column. The method can be applied to garbage power generation, biomass power generation, thermal power plants and inland nuclear power, and can obtain good economic benefits.

The mixed draft high-level water-collecting cooling tower is an improved tower of eight-high tower, and under the premise of keeping natural draft, mechanical blast is added.

Disclosure of Invention

In order to solve the problem that a high tower is expensive in manufacturing cost and overcome the technical defects that the high tower is easy to splash water and difficult to replace fillers, the invention provides a mixed ventilation high-level water-collecting cooling tower.

In order to achieve the purpose, the invention adopts the following technical scheme:

a mixed ventilation high-level water collecting cooling tower comprises a tower cylinder body, a tower support, a water lifting ring plate, a step type cone bucket water pool and a tower core support;

the tower cylinder body is supported by the tower strut, and the tower core is arranged in the tower cylinder body; a water lifting ring plate is arranged at the lower part of the inner wall of the tower cylinder body; a stepped conical hopper water tank is arranged below the water picking ring plate, and a water outlet vertical shaft is arranged at the center of the stepped conical hopper water tank; the tower core support penetrates through the bottom plate of the stepped cone bucket water pool;

the stepped cone bucket water pool comprises a cone bucket water pool, air guide wells, water shielding caps and a fan, wherein the plurality of air guide wells are arranged on the cone bucket water pool in a penetrating mode, the fan is arranged in the air guide wells, and the water shielding caps are arranged at the upper ends of the air guide wells.

As a further improvement of the invention, the cone bucket water pool comprises a water pool wall, a ring beam and vertical wall and a water pool bottom plate, the water pool wall, the ring beam and vertical wall and the water pool bottom plate are sequentially connected, and the plurality of air guide wells are uniformly arranged on the water pool bottom plate along an annular shape.

As a further improvement of the invention, the water pool bottom plate is of a step-type annular structure, the heights of the multiple circles of water pool bottom plates from outside to inside are sequentially reduced and are sequentially connected, the water pool bottom plate at the innermost side is connected with the water outlet vertical shaft, the depths of the multiple air guide shafts from outside to inside are sequentially increased, and the tops of all the air guide shafts are positioned on the same horizontal plane.

As a further improvement of the invention, the pool bottom plate is of a two-stage step structure, and in two adjacent annular pool bottom plates, the two-stage step of the pool bottom plate at the outer side is as high as the one-stage step of the pool bottom plate at the inner side.

As a further improvement of the invention, the water-shielding cap consists of a spherical dome cover and a laminated air outlet, and the lowest part of the dome cover and the lowest part of each laminated sheet are provided with water dripping lines; at least three uniformly distributed strut supports are arranged at the secondary lower part of the dome cover and the secondary lower part of each lamination to respectively support the dome cover and the laminations; radial corrugations are arranged on the upper surfaces of the dome cover and the lamination; the diameter of the outer edge of the lamination at the lowest position is larger than the outer diameter of the air guide shaft.

As a further improvement of the invention, the device also comprises a spiral line dismounting track and a fan barrel for mounting and dismounting the fan;

stays are axially arranged outside the spiral line dismounting track, and inner teeth are arranged on the inner wall of the spiral line dismounting track; the fan dismounting track is a spring type internal thread track;

the fan barrel is internally used for placing a fan, the outer part of the fan barrel is provided with an external thread of the fan barrel, and the side wall of the fan barrel is provided with a driving motor and a gear; the gear is meshed with the internal teeth; the outer thread of the fan cylinder is connected with the inner wall of the fan dismounting track in a matched mode.

As a further improvement of the invention, a locking device for locking the fan barrel is arranged in the wind guide well;

the outer diameter of the fan dismounting track is smaller than the net inner diameter of the air guide shaft; the inner diameter of the fan disassembly track is larger than the outer diameter of the fan barrel, and the outer threads of the fan barrel can rotate to ascend and descend along the fan disassembly track.

As a further improvement of the invention, a fan bridge is arranged below the air guide well, the upper part of the fan is connected with the fan bridge, and a reduction gear box and a motor for driving the fan are arranged on the fan bridge.

As a further improvement of the invention, the water-lifting ring plate is an inclined circular ring-shaped inclined plate which is arranged on the side wall of the tower cylinder and is inclined, and an air guide hole and a water-shielding cover are arranged on the water-lifting ring plate; the air guide holes are uniformly formed in the water raising ring plate, and the water shielding cover is arranged above the air guide holes.

As a further improvement of the invention, the tower cylinder body is of a thin-shell reinforced concrete hyperbolic structure.

Compared with the prior art, the invention has the following advantages:

the invention improves the smooth cone-bucket water pool into the step cone-bucket water pool, is particularly beneficial to the burying of the air guide shaft and the support of the ring beam and the support column, and becomes an upgraded eight-high tower (Pagoda). And an axial flow fan is arranged in the air guide well for blowing air, so that the eight-high tower is changed into a high-level water-collecting cooling tower with mixed ventilation, namely a mixed high tower. The tower core comprises a dehydrator and a supporting beam system thereof; a water distribution tank, a water distribution pipe and a spray head; water spraying filler and a support beam system thereof; the device comprises a stepped cone bucket water pool, an air guide shaft, a water shielding cap, an axial flow fan and the like. Mix high tower not only keep high-order receive water cooling tower "energy-conservation, fall make an uproar, cold wind can reach the tower center and can show the advantage that reduces water pump cavitation" moreover realized the automatic evenly distributed of cold wind: the cold air entering the tower from the upper part flows to the periphery, the cold air attached to the ground flows to the inner periphery of the tower, and the fan has the function of assisting ventilation.

Drawings

FIG. 1 is a sectional view and an elevation view of a mixing tower;

FIG. 2 is a bird's eye view of a stepped cone bucket water basin; for clarity, the figures do not depict beams and columns that support the pool and pool superstructure, nor fans in the air-conducting shaft;

FIG. 3 is a top view of a stepped cone shaped sink. Only installing an axial flow fan in a part of the air guide shaft; the wall thickness of the pool wall and the wall thickness of the air guide shaft are simplified to be 0 and are represented by single lines;

FIG. 4 is a cross-sectional view of the tower core I-I, corresponding to FIG. 5;

FIG. 5 is a large pictorial view of the first quadrant of the mixing tower, shown generally in FIG. 3;

FIG. 6 is a schematic view of a ventilation and water-shielding cap, a wind-guiding well wall and an axial flow fan;

FIG. 7 is a schematic view of a fan dismounting track, wherein (a) is a schematic view of a structure, and (b) is a dimension relation diagram.

The components of the drawings are illustrated as follows:

table 1 description of the components of the drawings

Detailed Description

In order to solve the problem of high cost of the Harper tower and overcome the technical defects of easy water splashing, difficult filler replacement and the like, a high-level water collecting tank and a water collecting inclined plate of the Harper tower are removed, a stepped cone bucket water collecting tank and an air guide well are additionally built, and an auxiliary fan is further added, so that a high-level water collecting cooling tower with mixed ventilation, which is called a 'mixed tower' for short, is constructed.

The natural ventilation cooling tower is applied to high-temperature and humid and hot areas, the ideal cooling effect is difficult to achieve only by natural ventilation in 6, 7, 8 and 9 months every year, an axial flow fan (fan) is needed for assisting ventilation, and the mixed high tower is promoted.

After summer of high temperature and damp heat, the fan can be dismantled and removed, and then the fan is installed when needed in the next year. The high-mixing tower has the advantages that the installation and the removal of the fan are very convenient, the fan can be ensured to work in a dry environment all the time, and the fan which is applied to a direct air cooling system of thermal power can be installed.

Cold air of the Harper passes through the high-position water receiving grooves and then passes through the gaps between the water receiving inclined plates to reach the lower part of the water spraying filler; the cold air of the mixing tower firstly flows through the air guide well and then reaches the lower part of the water spraying filler after bypassing the water shielding cap.

The mixing tower reserves the characteristic of a high-level water collecting tank of the Harper tower, the rectangular upper opening of the water tank is changed into a circular upper opening to form a step type cone funnel-shaped water tank, the water tank is penetrated from bottom to top by the air guide well, the top of the air guide well is higher than the highest water level of the water tank, and the air guide well is provided with a water shielding cap to prevent cold water from leaking away from the air guide well.

The mixed high tower is a core-changing tower of the haohao tower. The total investment is lower than that of the Harper tower, the Harper tower is the largest bright spot of the mixed tower, the air distribution is uniform, the cooling effect is improved, and the combined tower is suitable for high-temperature, damp and hot south China.

The mixed high tower has three key factors different from the conventional tower and the hayata: one is a high-level step type cone-bucket water pool, the other is an air guide shaft hung on the bottom plate of the cone-bucket water pool, and the other is mechanical air blowing auxiliary ventilation.

As shown in figure 1, the invention provides a mixed ventilation high-order water collecting cooling tower mainly based on natural ventilation and assisted by mechanical ventilation, which comprises a tower cylinder body 1, a tower pillar 2, a water picking ring plate 23 and a tower core, wherein the tower core consists of a pressure water inlet ditch 3, a pressure water outlet ditch 4, a water outlet vertical shaft 5, a pool wall 6, a pool bottom plate 7, a fan 8, a filler layer beam 9, a water spraying filler 10, a spray head 11, a water remover layer beam 12, a water remover 13, a fan bridge 14, a water distribution vertical shaft 15, a lamination air outlet 16, an inner periphery water distribution tank 17, an outer periphery water distribution tank 18, a water distribution pipeline 19, an air vent pipe 20, an air guide shaft 21, a water shielding cap (or top cover) 22, a water picking ring plate 23, a cast iron grate 24, a cone bucket water surface liquid level 25, a cold air flow direction 26, a water inlet flow direction 27, a water outlet flow direction 28, a vertical shaft water level 29, a tower core pillar 30, a ring beam and a vertical wall 31 and the like.

The tower core of the mixed high tower is positioned at the inner bottom of the tower shell. The tower core is from top to bottom in proper order:

a dehydrator and a support beam system thereof;

a water distribution tank, a water distribution pipe and a spray head (the water distribution pipe and the spray head are hung below a support beam system of the dehydrator);

water spraying filler and a support beam system thereof;

the device comprises a cone bucket water pool, an air guide shaft and a water-shielding ventilating cap;

as well as water distribution shafts, water outlet shafts, tower core struts (fig. 4 element 30), etc.

The tower cylinder body 1 is supported by the tower strut 2, and the tower core is arranged in the tower cylinder body 1; a water-lifting ring plate 23 is arranged at the lower part of the inner wall of the tower cylinder body 1; a step type conical hopper water pool is arranged below the water picking ring plate 23, and a water outlet vertical shaft 5 is arranged in the center of the step type conical hopper water pool; the tower core strut 30 passes through the water outlet shaft 5;

the stepped cone-bucket water pool comprises a cone-bucket water pool, a plurality of air guide shafts 21 which penetrate through the cone-bucket water pool, an air guide shaft 21, a water shielding cap 22 and a fan 8, wherein the fan 8 is arranged in the air guide shafts 21, and the water shielding cap 22 is arranged on the air guide shafts 21.

The tower cylinder body 1 is of a thin-shell reinforced concrete hyperbolic structure and can form a heat rising and floating effect like a smoke window; the tower cylinder body 1 is supported by a tower pillar 2; the lower part of the tower cylinder body 1 takes root out the water picking ring plate 23.

The water picking ring plate 23 is an inclined circular sloping plate rooted on the tower barrel 1, picks water flow into the cone bucket water pool, and has the function of preventing the facing water flow from continuously leaking along the inner wall of the cooling tower. The water-picking annular plate 23 is an annular inclined plate which is arranged on the side wall of the tower cylinder body 1 and is inclined, and the water-picking annular plate 23 is provided with an air guide hole and a water-shielding cover; the air guide holes are uniformly formed in the water picking ring plate 23, and a water shielding cover is arranged above the air guide holes. The structure of the wind guide hole and the water-shielding cover is the same as that of the wind guide shaft 21 and the water-shielding cap 22.

As shown in fig. 2 to 4, the cone-bucket pool comprises a pool wall 6, a ring beam and upright wall 31 and a pool bottom plate 7, the pool wall 6, the ring beam and upright wall 31 and the pool bottom plate 7 are sequentially connected, and a plurality of air guide shafts 21 are uniformly arranged on the pool bottom plate 7 along an annular shape.

The pool bottom plate 7 is of a step type annular structure, the heights of the multiple circles of pool bottom plates 7 from outside to inside are sequentially reduced and sequentially connected, the innermost pool bottom plate 7 is connected with the water outlet vertical shaft 5, the depths of the multiple air guide shafts 21 from outside to inside are sequentially increased, and the tops of all the air guide shafts 21 are located on the same horizontal plane.

The pool bottom plate 7 is of a two-stage step structure, and in two adjacent annular pool bottom plates, the second-stage step of the pool bottom plate on the outer side is as high as the first-stage step of the pool bottom plate on the inner side.

Tower core in step type cone bucket pond bottom plate 7, air guide shaft 21, cover water cap 22 and fan 8, four not only make mix the high tower and kept high-order receipts water cooling tower "energy-conservation, fall make an uproar, cold wind can reach the tower center and can show the advantage that reduces water pump cavitation" but also realized the automatic evenly distributed of cold wind: the upper part enters the tower to flow towards the periphery, and the cold air attached to the ground flows towards the inner periphery of the tower and has the ventilation assisting capability of the fan.

The stepped cone-bucket water pool mainly comprises a pool wall 6, a ring beam and vertical wall 31 and a pool bottom plate 7, and is in a stepped shallow water funnel shape. The pool floor 7 is penetrated by a plurality of air shafts 21; the parts of the water tank, the water spraying filler 10, the dehydrator 13 and the like are supported by the tower core support 30 and are supported on the water tank wall 6 and the vertical wall 31 in advance. The cone bucket water pool can ensure that the water body flows to the water outlet vertical shaft 5 by gravity, and can limit the water level 25 of the cone bucket at a higher position to store corresponding potential energy.

In the air shaft 21, a cylindrical hollow air shaft 21 is supported by the stepped pond bottom plate 7. The upper end of the air guide shaft 21 is provided with a water shielding cap 22 which guides cold air to the lower part of the cooling tower water spraying filler 10 and can select a fan spiral line dismounting track 32.

The water-shielding cap 22 is a structure that can ventilate and can prevent the falling water from flowing away from the air-guiding well 21. The water-concealing cap 22 consists of a spherical dome cap 22 and a laminated air outlet 16. The lowest part of the dome and the lowest part of each lamination are designed with water dripping lines to prevent the generation of rear water hooking. At the second lowest part of the dome and at the second lowest part of each lamination, at least 3 uniformly distributed supporting columns are arranged to support the dome and the laminations respectively. The upper surfaces of the dome and the lamination are provided with radial corrugations to arrange water flow into a strand shape so as to reduce air outlet resistance.

The fan 8 is always operated in a dry environment. The fan 8 is an axial flow fan.

The fan bridge 14 is fixed below the interior of the air shaft 21. Firstly, hanging the crane span structure of the fan into the inner wall of the air guide shaft, then rotating to be in place, and finally, connecting the bolt by using a nut and then fixing the crane span structure. The inner wall of the air guide shaft is provided with a pre-embedded bolt. The fan, the reduction gear box, the motor and the like are all arranged on the fan bridge.

Also comprises a spiral line dismounting track 32 and a fan barrel 32-3 for mounting and dismounting the fan 8;

a stay 32-1 is axially arranged outside the spiral line dismounting track 32, and internal teeth 32-2 are arranged on the inner wall of the spiral line dismounting track 32; the fan dismounting track 32 is a spring type internal thread track;

the fan 8 is placed in the fan barrel 32-3, the external thread 32-4 of the fan barrel is arranged outside the fan barrel 32-3, and the side wall of the fan barrel 32-3 is provided with a driving motor and a gear 32-5; the gear 32-5 is meshed with the internal teeth 32-2; the outer thread 32-4 of the fan cylinder is connected with the inner wall of the fan dismounting track 32 in a matching way.

A locking device for locking the fan barrel 32-3 is arranged in the air guide shaft 21; the outer diameter of the fan dismounting track 32 is smaller than the net inner diameter of the air guide shaft 21; the fan removal track 32 has an inner diameter greater than an outer diameter of the fan barrel 32-3 and enables the fan barrel external threads 32-4 to slide rotationally along the fan removal track 32.

The spiral line dismounting track 32 is an optional part, does not enter the air guide well, and is connected with an internal thread track embedded in the air guide well only by bolts. The blower barrel 32-3 can be locked in the wind guide well. The blower barrel 32-3 is a support frame for the operation of the blower, and is also a track for feeding the blower 8 into the wind guide well as landing the blower to the ground. The fan spiral detaching track 32 is composed of several sections, and is a movable track for ascending installation of all fans and maintenance and detachment after falling to the ground.

Optional joining in marriage fan helix and dismantle track 32, helix dismantlement track 32 is different from the optional accessory of claim 9, and helix dismantles track 32 and does not get into in the wind-guiding well, only links with the internal thread track of inlaying in the wind-guiding well with the bolt. The fan barrel 32-3 can be locked in the wind guide well. The fan barrel 32-3 is a support frame for the operation of the fan, and is also a rail for feeding the whole fan 8 into the wind guide well through the spiral line dismounting rail 32, and the fan barrel 32-3 is also a rail for lowering the whole fan to the ground. The fan spiral line dismounting track 32 is composed of several sections, is a movable track, and is used for ascending installation of all fans, maintenance and dismounting after the fans descend to the ground, and the like.

Examples

If the scheme of the invention is changed to the Harper tower of a single 1000MW generator set in the power plant of Jiujiang in the west of the Yangtze river, the data of the mixed tower is as follows:

TABLE 2 Utility model of power plant

Rows in the table that are not filled with data, with light shading, play a part in segmentation: the intra-section data is homogeneous data or closely related data;

the serial numbers J54 to J60 are cold effect data.

The Hu Gao tower of the power plant of Jiujiang in the west of the Yangtze river has already been built into operation, and Table 2 shows an embodiment of the hybrid tower of the invention, wherein the data of the tower shell and the like are identical to the Hu Gao tower (namely the data of serial numbers J1-J25, J44-J48 and J54-J60 in the table). If the Kyurt power plant does not adopt the Harper tower but changes the mixed high tower, each tower saves the investment by 3000 ten thousand yuan.

The mixed high tower of the embodiment is built in the Jiujiang power plant, and compared with 13000m which is built with the same cooling effect ² The investment of the conventional tower is saved by 300 ten thousand yuan because the cost of a cone bucket water pool of the mixing tower and the cost of a fan are 1700 ten thousand yuan, and the cost of a cylindrical water pool (the diameter is 4 meters larger than the bottom diameter of the tower) of the sinking ground of the conventional tower is 2000 ten thousand yuan.

Although specific embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the specific embodiments described above, which are intended to be illustrative, instructive, and not restrictive. In the light of the present description, a person skilled in the art can make several variants without departing from the scope of protection of the claims of the present invention, which belong to the protection of the present invention.

Claims

1. A mixed ventilation high-level water collecting cooling tower is characterized by comprising a tower cylinder body (1), a tower support column (2), a water lifting ring plate (23), a stepped cone bucket water pool and a tower core support column (30);

the tower cylinder body (1) is supported by the tower strut (2), and the tower core is arranged in the tower cylinder body (1); a water-lifting ring plate (23) is arranged at the lower part of the inner wall of the tower cylinder body (1); a step type conical bucket water pool is arranged below the water picking ring plate (23), and a water outlet vertical shaft (5) is arranged in the center of the step type conical bucket water pool; the tower core support column (30) penetrates through the stepped cone bucket water pool bottom plate (7);

the stepped cone-bucket water pool comprises a cone-bucket water pool, a plurality of air guide wells (21) which penetrate through the cone-bucket water pool, a water shielding cap (22) and a fan (8), wherein the fan (8) is arranged in the air guide wells (21), and the water shielding cap (22) is arranged at the upper ends of the air guide wells (21).

2. A hybrid draft high level water receiving cooling tower as claimed in claim 1,

the cone bucket pool comprises a pool wall (6) and a ring beam which are used as vertical walls (31) and a pool bottom plate (7), the pool wall (6) and the ring beam which are used as vertical walls (31) are sequentially connected with the pool bottom plate (7), and the air guide shafts (21) are uniformly arranged on the pool bottom plate (7) along an annular shape.

3. A hybrid draft high level water receiving cooling tower as claimed in claim 2,

pond bottom plate (7) are stepped ring structure, and outside-in many circles pond bottom plate (7) highly reduce in proper order and connect gradually, and the pond bottom plate (7) of the most inboard is connected with water shaft (5), and outside-in a plurality of induction shaft (21) degree of depth increase in proper order and all induction shaft (21) tops are in same horizontal plane.

4. A hybrid draft high level water receiving cooling tower as claimed in claim 3,

the pool bottom plates (7) are of a two-stage step structure, and in two adjacent annular pool bottom plates, the height of the second-stage step of the pool bottom plate on the outer side is equal to that of the first-stage step of the pool bottom plate on the inner side.

5. A hybrid draft high level water receiving cooling tower as claimed in claim 1,

the water-shielding cap (22) consists of a spherical dome cover (22) and laminated air outlets (16), and the lowest part of the dome cover (22) and the lowest part of each laminated sheet are provided with water dripping lines; at least three uniformly distributed strut supports are arranged at the secondary lower part of the dome cover (22) and the secondary lower part of each lamination for respectively supporting the dome cover (22) and the laminations; radial corrugations are arranged on the upper surfaces of the dome cover (22) and the lamination; the outer diameter of the lowest lamination is larger than the outer diameter of the air guide shaft (21).

6. A hybrid draft high level water receiving cooling tower as claimed in claim 1,

the spiral line dismounting track (32) and the fan barrel (32-3) are used for mounting and dismounting the fan (8);

a stay (32-1) is axially arranged outside the spiral line dismounting track (32), and internal teeth (32-2) are arranged on the inner wall of the spiral line dismounting track (32); the fan dismounting track (32) is a spring type internal thread track;

the fan barrel (32-3) is used for placing a fan (8), the fan barrel (32-3) is externally provided with a fan barrel external thread (32-4), and the side wall of the fan barrel (32-3) is provided with a driving motor and a gear (32-5); the gear (32-5) is meshed with the internal teeth (32-2); the outer thread (32-4) of the fan cylinder is connected with the inner wall of the fan dismounting track (32) in a matching way.

7. A hybrid draft high level water receiving cooling tower as claimed in claim 6,

a locking device for locking the fan barrel (32-3) is arranged in the air guide shaft (21);

the outer diameter of the fan dismounting track (32) is smaller than the net inner diameter of the air guide shaft (21); the inner diameter of the fan dismounting track (32) is larger than the outer diameter of the fan barrel (32-3), and the outer thread (32-4) of the fan barrel can rotate to ascend and descend along the fan dismounting track (32).

8. A hybrid draft high level water receiving cooling tower as claimed in claim 1,

a fan bridge (14) is arranged below the air guide shaft (21), the upper part of the fan (8) is connected with the fan bridge (14), and a reduction gear box and a motor for driving the fan (8) are arranged on the fan bridge (14).

9. A hybrid draft high level water receiving cooling tower as claimed in claim 1,

the water-lifting ring plate (23) is an inclined ring-shaped inclined plate which is arranged on the side wall of the tower barrel body (1) and inclines upwards, and an air guide hole and a water-shielding cover are arranged on the water-lifting ring plate (23); the air guide holes are uniformly formed in the water picking ring plate (23), and a water shielding cover is arranged above the air guide holes.

10. A hybrid draft high level water receiving cooling tower as claimed in claim 1,

the tower body (1) is of a thin-shell reinforced concrete hyperbolic structure.