A wind guide shaft of a high-position water collection cooling tower and a cooling tower thereof

Abstract

The present invention provides an air guide shaft of a high-level water-collecting cooling tower and a cooling tower thereof, comprising a shaft body, the lower end of which passes through a conical bucket water pool and is connected to a foundation, and a water shielding cap is arranged at the upper end thereof, so that cooling air enters through the lower part of the shaft body and is guided out through the water shielding cap to cool the filler inside the cooling tower, and at the same time, the shaft body and the conical bucket water pool support each other, thereby improving the stability of the air guide shaft and the conical bucket water pool; secondly, a water shielding cap is arranged at the top of the shaft body to prevent water from entering the shaft body and realize water-gas separation, and finally, a pillar is arranged at the top of the shaft body, and the pillar is connected to a filler beam and a dewatering device beam, thereby supporting the filler beam and the dewatering device beam and also improving the utilization rate of the upper space.

Description

Technical Field

[0001] The invention belongs to the field of wet cooling towers in thermal (nuclear) power plants, and in particular relates to an air guide shaft of a high-position water-collecting cooling tower and a cooling tower thereof. Background Art

[0002] The world's first high-level water cooling tower designed by the Belgian company Hamon was put into operation at the Belleville Nuclear Power Plant in France in 1986. This type of cooling tower can be referred to as a "Hamon tower" to distinguish it from a "conventional tower".

[0003] The first "Harbin High-speed Tower" in my country was put into operation in the Shaanxi Pucheng Power Plant in March 1996. Compared with conventional towers, the Harbin High-speed Tower has the significant advantages of energy saving, noise reduction and cold air reaching the center of the tower. Since 2012, my country has successively put into operation the thermal power plants of Anqing, Wanzhou, Laiwu, Shouguang, Jiujiang, Hefei Lujiang, Ruijin, Dabie Mountain, Jurong, Zhongshan and Hunan Pingjiang. However, the nuclear power plant of Jiangxi Pengze Nuclear Power Plant, which introduced the Harmon design technology, has a capacity of 13,000m 2 The Hagao Tower is still under construction. In addition, the 19,000m 2 The construction of the Haga Tower has not yet started.

[0004] The high-rise tower achieves the goal of high-level water collection by building and installing complex water collection devices to change the path of water falling in the rain area of ​​the cooling tower and the path of air rising, but the cost is a large investment. 2 The high tower has the same cooling effect as 14000m 2 Compared with conventional towers, the initial investment increased by about 38.61 million yuan (calculated based on imported materials); Jiangsu Jurong Power Plant 10200m 2 The cooling efficiency of the Hago Tower is equivalent to 12000m 2 Conventional towers cost an additional 28.5 million yuan (part of the materials are calculated based on domestic materials); the 9500m2 tower of Lujiang Power Plant in Hefei, Anhui 2 The investment in the Hagao Tower is 18 million yuan more than that of a conventional tower (calculated based on domestic materials). Summary of the invention

[0005] In order to solve the problem of large investment in existing high-altitude towers, the present invention provides an air guide shaft for a high-level water collection cooling tower and a cooling tower thereof. By constructing a conical bucket water collection pool and a ground-standing air guide shaft, the goal of high-level water collection can be achieved without substantially changing the path of water falling in the rainy area of ​​the cooling tower and only changing the rising path of the air, while reducing the construction cost of the high-level water collection cooling tower.

[0006] The present invention is achieved through the following technical solutions:

[0007] A wind guide shaft of a high-position water collection cooling tower comprises a shaft body, wherein the lower end of the shaft body is connected to the foundation of the cooling tower, the upper end of the shaft body passes through the cone bucket pool of the cooling tower, a water shielding cap is arranged on the top of the shaft body, at least one air outlet is arranged on the side wall of the water shielding cap, the air outlet is higher than the water level of the cone bucket pool, and an air inlet is also arranged on the shaft body and is located below the cone bucket pool;

[0008] A plurality of pillars extending upward are arranged on the top of the shaft body, and the pillars are respectively connected to the filling beam and the dewatering device beam of the cooling tower.

[0009] Preferably, the water shielding cap is a hollow frustum structure with an open lower end, and the lower end of the water shielding cap is connected to the top of the wellbore body.

[0010] Preferably, a plurality of air ducts are also provided on the top of the water shielding cap, the lower ends of the air ducts pass through the top of the water shielding cap and are connected with the well body, the tops of the air ducts are closed, and air outlets are provided on the side walls thereof.

[0011] Preferably, the top edge of the water shielding cap is also provided with an annular rectifying groove, the bottom of the rectifying groove is provided with an embedded pipe, one end of the embedded pipe extends out of the rectifying groove and can guide the water in the rectifying groove to the cone bucket pool.

[0012] Preferably, the shaft body is also provided with an air control door for controlling the opening size of the air inlet.

[0013] Preferably, the air control door is a circular ring structure, rotatably installed in the wellbore body and at the same height as the air inlet, and an air outlet is provided on the air control door.

[0014] Preferably, the air control door is connected to a driving device, and the driving device is used to drive the air control door to rotate;

[0015] The driving device includes a shell, in which a helical gear group is arranged. The shell is installed at the lower part of the inner wall of the wellbore. The input shaft of the helical gear group extends horizontally out of the outer wall of the shell and is connected to the crank handle. The input shaft of the helical gear group is vertically arranged on the shell. A driving gear is arranged at the upper end of the input shaft. The inner wall of the air control door is provided with internal teeth, and the driving gear is meshed with the internal teeth of the air control door.

[0016] Preferably, a positioning ring is provided on the inner wall of the wellbore body, the positioning ring is located below the air inlet, the air control door is provided on the top of the positioning ring, and a thrust cylindrical roller bearing is provided between the positioning ring and the wellbore body.

[0017] The present invention also provides a high-position water collection cooling tower, comprising a tower body, a cone bucket water pool and the above-mentioned air guide well arranged inside the tower body;

[0018] The conical bucket pool is suspended and connected to the air guide shaft. Multiple air guide shafts are arranged in a circular array. The lower end of the air guide shaft passes through the bottom of the conical bucket pool and is connected to the foundation. A water outlet well connected to the conical bucket pool is arranged at the bottom center of the conical bucket pool. A water distribution shaft is arranged in the water outlet well. The water distribution shaft passes through the inside of the water outlet well.

[0019] A dewatering beam and a filling beam are also arranged in the tower body from top to bottom. The dewatering beam is connected to the top of the air guide shaft support column, and the filling beam is connected to the middle of the support column.

[0020] Preferably, the air inlet of each of the multiple air guide shafts in the annular array is at a different height from the foundation, and gradually increases from the center of the tower body outwards.

[0021] Compared with the prior art, the present invention has the following beneficial technical effects:

[0022] The present invention provides an air guide shaft of a high-level water-collecting cooling tower, comprising a shaft body, the lower end of which passes through a conical bucket water pool and is connected to a foundation, and a water shielding cap is arranged at the upper end thereof. Cooling air enters through the lower part of the shaft body, and is guided out through the water shielding cap to cool the filler inside the cooling tower. At the same time, the shaft body and the conical bucket water pool support each other, thereby improving the stability of the air guide shaft and the conical bucket water pool; secondly, a water shielding cap is arranged on the top of the shaft body to prevent water from entering the shaft body and realize water-gas separation; finally, a pillar is arranged on the top of the shaft body, and the pillar is connected to the filler beam and the dewatering device beam, thereby supporting the filler beam and the dewatering device beam and also improving the utilization rate of the upper space.

[0023] Furthermore, an air duct is provided on the top of the water shielding cap to further improve the cooling efficiency.

[0024] Furthermore, water on the top of the water shielding cap is collected through the rectifying groove to reduce the resistance to the outflow of wind when the cold water on the water shielding cap falls into the pool.

[0025] Furthermore, the air intake volume is controlled by the air control door to achieve the adjustment of the air intake volume.

[0026] Furthermore, the air control door is controlled by a driving device, which is convenient and labor-saving to operate.

[0027] Compared with the existing high-position water-collecting cooling tower, the high-position tower is provided with a high-position water collection pool, and the high-position water collection device is cancelled. At the same time, the existing rectangular water collection pool is modified into a cone bucket pool, thereby reducing the construction cost. The well body passes through the cone bucket pool from bottom to top, and a water shielding cap is arranged on the top of the well body to prevent the water from flowing away from the air guide shaft. The cold wind rushes out of the air guide shaft and flows around the water shielding cap to reach the bottom of the filler. A support is arranged on the top of the well body, and a filler beam and a dewatering device beam are cast on the support to improve the utilization rate of the upper space, and at the same time, the well body, the cone bucket pool, the filler beam and the dewatering device beam are formed into a whole to improve the stability; secondly, a water-lifting ring plate is arranged on the upper part of the cone bucket pool to prevent the water in the rain area of ​​the cooling tower from splashing outside the tower. There is also an air guide pipe on the ring plate, so that the wind of the tower body passes through the air guide pipe and enters the bottom of the filler, thereby improving the cooling effect of the cooling tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the cooling tower of the present invention;

[0029] Figure 2 for Figure 1 Sectional view of AA;

[0030] Figure 3 This is a structural diagram of the air guide shaft of the present invention;

[0031] Figure 4 A top view of the air guide shaft of the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of the water shielding cap of the present invention;

[0033] Figure 6 This is a structural diagram of the air guide shaft of the present invention;

[0034] Figure 7 It is a schematic diagram of the installation of the air control door and the tower body of the present invention;

[0035] Figure 8 It is a schematic diagram of the connection between the driving gear and the air control door of the present invention;

[0036] Fig. 9 It is a schematic structural diagram of the air control door driving device of the present invention.

[0037] In the figure: 1. tower body; 2. tower support; 3. cone bucket pool; 4. well body; 5. water distribution shaft; 6. water outlet well; 7. protective fence; 8. air inlet; 9. filler beam; 10. water eliminator beam; 11. water lifting ring plate; 12. air guide duct; 13. air outlet; 14. shutter; 15. rectifier trough; 16. buried pipe; 18. support; 19. water shielding cap; 20. air control door; 21. door frame; 22. door; 23. shell; 24. oil filling hole; 25. crank handle; 26. dustproof pipe; 27. transmission rod; 28. driving gear. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings, which are intended to explain the present invention rather than to limit it.

[0039] See also Figure 1 and Figure 2 A wind guide shaft of a high-level water-collecting cooling tower comprises a shaft body 4 arranged in a tower body, the lower end of the shaft body 4 is connected to a foundation, the upper end of the shaft body 4 passes through a cone-shaped water pool 3 of an eight-high tower, and is located at the bottom of a filling beam 9, a truncated cone-shaped water shielding cap 19 is arranged on the top of the shaft body 4 to prevent rainwater from the top from entering the shaft body 4, the small end of the water shielding cap 19 is connected to the top of the shaft body 4, at least one air outlet 13 is arranged on the side wall of the water shielding cap 19, and a shutter 14 is arranged on the air outlet 13.

[0040] See also Figure 3 and 4 The water shielding cap 19 is an open structure at the lower end, and the open end is connected to the upper outer wall of the well body 4. There are also several pillars 18 evenly distributed circumferentially on the top of the well body 4. The pillars 18 extend vertically upward. The middle part of the pillars 18 is connected to the filling beam 9, and the top of the pillars 18 is connected to the dewatering beam 10. The pillars 18 are used to support the filling beam 9 and the dewatering beam 10.

[0041] The top of the wellbore body 4 is higher than the highest liquid level of the cone bucket pool to prevent cold water from leaking out of the well.

[0042] The shaft body 4 is also provided with an air inlet 8 located at the lower part of the cone bucket pool 3 , and the air inlet 8 is provided with an air control door 20 for controlling the opening size of the air inlet 8 .

[0043] See also Figure 7-9The air control door 20 is a circular ring structure, which is installed in the shaft body 4 and is at the same height as the air inlet 8. The air outlet is arranged on the air control door 20. When the size of the air inlet 8 needs to be controlled, the air control door 20 is axially rotated so that the air outlet is directly opposite to the air inlet 8 of the air control door 20. At this time, the air intake volume reaches the maximum. When the air intake volume needs to be reduced, the air control door 20 is rotated so that the air outlet is misaligned with the air inlet 8, so that the air inlet is reduced, and then the air intake volume is reduced. When the air outlet of the air control door 20 and the air inlet 8 are completely misaligned, that is, the air control door 20 completes the shielding of the air inlet 8, and the air inlet is closed.

[0044] The air control door 20 is connected through a driving device, which is used to drive the air control door 20 to rotate. A positioning ring is provided on the inner wall of the wellbore body 4, and the positioning ring is located at the lower part of the air inlet 8. The air control door 20 is located at the top of the positioning ring. A thrust cylindrical roller bearing is provided between the positioning ring and the wellbore body 4 to reduce the friction when the air control door 20 rotates.

[0045] The air control door 20 is in clearance fit with the inner wall of the wellbore body 4 , and an annular inner tooth is provided on the inner wall of the air control door 20 .

[0046] The driving device includes a shell 23, in which a helical gear group is arranged. The shell 23 is installed at the lower part of the inner wall of the well body 4 to facilitate operation by the operator. The input shaft of the helical gear group horizontally extends out of the outer wall of the shell and is connected to the crank 25. The input shaft of the helical gear group is vertically arranged on the shell, and the end of the input shaft is connected to the lower end of the transmission rod 27. The upper end of the transmission rod 27 is provided with a driving gear 28, and the driving gear 28 is meshed with the internal teeth of the air control door 20.

[0047] The housing 23 is also provided with a refueling hole 24 for lubricating the helical gear set by adding lubricating oil. A dustproof tube 26 is also sleeved on the lower end of the early transmission rod, and the lower end of the dustproof tube 26 is connected to the housing 23.

[0048] The bottom of the shaft body 4 is also provided with an entrance and exit, and a door 22 with a door frame 21 is embedded in the entrance and exit to facilitate the staff to enter the shaft body 4.

[0049] Furthermore, the wellbore body 4 and the cone water pool 3 are sealed to prevent water from leaking out of the wellbore body 4 and the cone water pool 3.

[0050] The foundation is circular and is located below the cooling tower ground elevation of ±0.00 meters, and together with the bottom of the well, is located in the soil.

[0051] See also Figure 6 Each well body has 4 air outlets, and there are 4 pillars between the air outlets, which are located on the top of the water shielding cap 19. The net height of the air outlet is 1 / 2 of the radius of the air guide well, and the air outlet is located above the water surface of the pool.

[0052] The shaft body 4 is a cylindrical body, and the diameter of the body varies according to the needs, but at least one body with a diameter not less than 2 meters is used as a hanging hole.

[0053] The door 22 on the tower body is located on the ground, and a door opening is opened in the well body. The well door can be rounded, similar to the wind power tower door. This door is used as an artificial channel for transporting cooling tower fillers during installation, and a maintenance and repair channel for the air control door motor.

[0054] A thrust cylindrical roller bearing is placed on the positioning ring to reduce the resistance of the air control door when it rotates. The inner wall of the air guide shaft is used to limit the deviation of the air control door. A very low-power motor is used through gears to change the opening of the air control door. Meshing teeth are provided around the inner wall of the air control door.

[0055] The blinds are arc-shaped fixed blinds, which are optional components and are installed on the air outlet with an inclination angle of generally 45°.

[0056] The top edge of the water shielding cap is provided with a rectifying groove 15, which is annular in plane and U-shaped in cross section. It is used to collect the cold water falling on the air guide manhole cover, and rectify it into strands of water through buried pipes and then enter the cone bucket pool, so as to reduce the resistance of the cold water on the manhole cover plate to the air outlet when it falls into the pool.

[0057] See also Figure 5 A plurality of air ducts 12 are also arranged on the top of the water shielding cap, and a metal short tube is pre-buried on the water shielding cap, and the upper part of the short tube is exposed 200mm high, which is used to nest the plastic air duct outside. The plastic air duct is first expanded before nesting, and the air duct has a shutter to discharge air.

[0058] The shaft body is a reinforced concrete structure, and all openings on its wall can be rounded to avoid stress concentration.

[0059] The present invention provides an air guide shaft of a high-position water-collecting cooling tower, in which a vertical shaft body is arranged on a conical bucket water pool, the lower end of the shaft body is connected to a foundation, and the upper end passes through the conical bucket water pool and is located at the bottom of a filling beam, wind enters from an air inlet, and cools the filling on the filling beam through an outlet, and at the same time, the shaft body and the conical bucket water pool support each other, thereby improving the stability of the air guide shaft and the conical bucket water pool; secondly, a water shielding cap is arranged on the top of the shaft body to prevent water from entering the shaft body and realize water-gas separation, and finally, a pillar is arranged on the top of the shaft body, and the pillar is connected to the filling beam and the dewatering device beam, thereby supporting the filling beam and the dewatering device beam and also improving the utilization rate of the upper space.

[0060] The present invention also provides a high-position water collection cooling tower using the air guide shaft, and the specific structure is as follows:

[0061] A high-level water collection cooling tower comprises a tower body 1 made of hyperbolic reinforced concrete, a water-lifting ring plate 11, an air guide shaft, a reinforced concrete cone bucket water tank 4, a filler beam 9 and a water remover beam 10.

[0062] The tower body 1 is set on the tower pillars 3 arranged in a ring. A plurality of air guide shafts are arranged in a circle at the bottom of the tower body 1 and are located inside the tower body 1. The conical bucket pool 3 is supported in the tower body 1 through the air guide shaft and is located in the middle of the air guide shaft. A water outlet well 6 is set in the center of the conical bucket pool 3. Water collected by the conical bucket pool 3 flows into the water outlet well 6. A water distribution shaft 5 is set in the water outlet well 6. The water distribution shaft 5 passes through the inside of the water outlet well 6. A protective fence 7 is also set at the mouth of the water outlet well 6 to prevent operators from falling in, thereby improving safety.

[0063] The water-drawing ring plate 11 is arranged in a ring shape on the inner wall of the tower body 1 and is arranged obliquely downward. The inner edge of the water-drawing ring plate 11 is located at the upper part of the cone water pool 3. The water-drawing ring plate 11 is used to collect water that flows down the inner wall of the tower body 1 and guide it into the cone water pool 3. A plurality of air ducts 12 are evenly distributed on the circumference of the water-drawing ring plate 11. The lower end of the air duct 12 passes through the water-drawing ring plate 11, and the upper end is a closed structure. An air outlet is arranged on the side wall, and a shutter 14 is arranged on the air outlet.

[0064] Four pillars 18 are arranged on the top of the shaft body 4 of each air guide shaft, and the pillars extend toward the top of the tower body 1. Filling beams 9 and dewatering beams 10 are arranged in sequence from bottom to top on the top of the conical bucket pool 3. The filling beam 9 is formed in the middle of the pillar 18 and is integrally cast with the pillar 18 by concrete. Filling is arranged on the top of the filling beam 9, and the seasoning is supported on the filling beam 9. The dewatering beam 10 is located on the top of the pillar 18. A dewatering device is arranged on the dewatering beam 10. A water outlet pipeline is arranged at the bottom of the dewatering beam 10, and a nozzle is arranged on the water outlet pipeline. The water outlet pipeline is connected to the water distribution shaft. The nozzle sprays water onto the filling, and the water flows into the conical bucket pool 3 through the seasoning for recovery.

[0065] The sum of the cross-sectional areas of all shaft bodies shall not be less than the windage area between the pillars of the cooling tower shell. Pillars for supporting the filler are provided on the upper part of the shaft body. An air outlet is provided above the water surface of the shaft body, and the air outlet is equipped with a shutter. The shaft body passes through the bottom plate of the cone bucket pool and is cast as a whole with the bottom plate of the pool. The lower end of the shaft body is a concrete foundation. When holes are opened on the shaft body, if reinforcement is required, reinforcement is applied to the inside of the barrel to keep the outer wall of the shaft body smooth and beautiful. The wall thickness of the shaft body is determined according to calculations, but the wall thickness of the part where the pillars are provided on the upper part of the barrel shall not be thinned, and the wall thickness shall be equal to the cross-sectional width of the pillars. In fact, the shaft body can also be understood as a reinforced concrete structure in which four pillars are connected into a whole by thin walls.

[0066] Each shaft body is provided with two air inlets 8, facing the outside of the tower, and the two air inlets are separated by the width of the tower body. The heights of the air inlets of different shaft bodies from the ground are different: they gradually increase from the center of the tower body to the outside. The heights of the staggered air inlets are to regularize the flow field of the cold air entering the tower and evenly distribute the cold air. The net height of the air inlet is equal to the radius of the air guide shaft.

[0067] The components are described as follows:

[0068] Table 1 Components description table

[0069]

[0070]

[0071] Example 1

[0072] Guangdong Heyuan Power Plant's 1000MW generator set is equipped with a Haga tower. By adopting the high-level water collection cooling tower of the present invention, each cooling tower can save 31.58 million yuan. The cost of the high-level cone bucket water tank of the present invention is 9.33 million yuan, while the cost of the conventional tower sunken cylindrical water tank is 18.17 million yuan. Therefore, the cooling tower of the present invention is also cheaper than building a 12,000m cooling tower in Heyuan Power Plant. 2 The conventional tower saves investment of 8.84 million yuan.

[0073] Compared with the existing high-position water-collecting cooling tower, the high-position tower is provided with a high-position water collection pool, and the high-position water collection device is cancelled. At the same time, the existing rectangular water collection pool is modified into a cone bucket pool, thereby reducing the construction cost. The well body passes through the cone bucket pool from bottom to top, and a water shielding cap is arranged on the top of the well body to prevent the water from flowing away from the air guide shaft. The cold wind rushes out of the air guide shaft and flows around the water shielding cap to reach the bottom of the filler. A support is arranged on the top of the well body, and a filler beam and a dewatering device beam are cast on the support to improve the utilization rate of the upper space, and at the same time, the well body, the cone bucket pool, the filler beam and the dewatering device beam are formed into a whole to improve the stability; secondly, a water-lifting ring plate is arranged on the upper part of the cone bucket pool to prevent the water in the rain area of ​​the cooling tower from splashing outside the tower. There is also an air guide pipe on the ring plate, so that the wind of the tower body passes through the air guide pipe and enters the bottom of the filler, thereby improving the cooling effect of the cooling tower.

[0074] The present invention discloses a high-position water collection cooling tower, the internal air guide shaft of which not only enables the cooling tower to maintain the advantages of the high-position water collection cooling tower of "energy saving, noise reduction and cold air reaching the center of the tower", but also regulates the cold air flow field of the cooling tower, guides the lower tower cold air close to the ground to enter the inner water distribution area of ​​the cooling tower, and guides the upper tower cold air to enter the outer water distribution area of ​​the cooling tower. In addition, the ground-mounted air guide shaft also has the comprehensive functions of guiding air, shielding water, supporting the tower core and controlling the amount of cold air.

[0075] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. An air guide shaft of a high-level water collection cooling tower, characterized in that: The well body (4) comprises a well body (4), the lower end of the well body (4) is connected to the foundation of the cooling tower, the upper end of the well body (4) passes through the cone bucket pool (3) of the cooling tower, a water shielding cap (19) is arranged on the top of the well body (4), at least one air outlet (13) is arranged on the side wall of the water shielding cap (19), the air outlet (13) is higher than the water level of the cone bucket pool (3), and an air inlet (8) is also arranged on the well body (4) and is located below the cone bucket pool (3); A plurality of pillars (18) extending upward are arranged on the top of the shaft body (4), and the pillars are respectively connected to the filler beam (9) and the dewatering device beam (10) of the cooling tower.

2. The air guide shaft of a high-position water collection cooling tower according to claim 1, characterized in that: The water shielding cap (19) is a hollow truncated cone structure with an open lower end, and the lower end of the water shielding cap (19) is connected to the top of the wellbore body (4).

3. The air guide shaft of a high-position water collection cooling tower according to claim 2, characterized in that: A plurality of air ducts (12) are also provided on the top of the water shielding cap (19); the lower ends of the air ducts (12) pass through the top of the water shielding cap (19) and are connected to the wellbore body (4); the tops of the air ducts (12) are closed, and air outlets are provided on their side walls.

4. The air guide shaft of a high-position water collection cooling tower according to claim 3, characterized in that: The top edge of the water shielding cap (19) is also provided with an annular rectifying groove (15), and the bottom of the rectifying groove (15) is provided with an embedded pipe (16), one end of the embedded pipe (16) extends out of the rectifying groove (15) and is capable of guiding water in the rectifying groove (15) into the cone bucket pool (3).

5. The air guide shaft of a high-position water collection cooling tower according to claim 1, characterized in that: The shaft body (4) is also provided with an air control door (20) for controlling the opening size of the air inlet (8).

6. The air guide shaft of a high-position water collection cooling tower according to claim 5, characterized in that: The air control door (20) is a circular ring structure, rotatably mounted in the wellbore body (4), and is at the same height as the air inlet (8). An air outlet is provided on the air control door (20).

7. The air guide shaft of a high-level water collection cooling tower according to claim 6, characterized in that: The air control door (20) is connected to a driving device, and the driving device is used to drive the air control door (20) to rotate; The driving device comprises a housing (23), a helical gear set is arranged in the housing (23), the housing (23) is mounted on the lower part of the inner wall of the wellbore body (4), an input shaft of the helical gear set extends horizontally out of the outer wall of the housing and is connected to the crank (25), the input shaft of the helical gear set is arranged vertically on the housing, a driving gear (28) is arranged on the upper end of the input shaft, the inner wall of the air control door (20) is provided with internal teeth, and the driving gear (28) meshes with the internal teeth of the air control door (20).

8. The air guide shaft of a high-position water collection cooling tower according to claim 6, characterized in that: A positioning ring is provided on the inner wall of the wellbore body (4), and the positioning ring is located below the air inlet (8). The air control door (20) is provided on the top of the positioning ring, and a thrust cylindrical roller bearing is provided between the positioning ring and the wellbore body (4).

9. A high-level water collection cooling tower, characterized in that: It comprises a tower body (1), a cone-shaped water pool (3) arranged inside the tower body, and an air guide shaft as claimed in any one of claims 1 to 8; The conical bucket pool (3) is suspended and connected to the air guide shaft, and a plurality of air guide shafts are arranged in a circular array. The lower ends of the air guide shafts pass through the bottom of the conical bucket pool (3) and are connected to the foundation. A water outlet shaft (6) is arranged at the center of the bottom of the conical bucket pool (3) and is connected to the foundation. A water outlet shaft (6) is arranged in the water outlet shaft (6), and a water distribution shaft (5) passes through the inside of the water outlet shaft (6). A dewatering beam (10) and a filling beam (9) are also provided in the tower body (1) from top to bottom and are located at the top of the cone bucket water pool (3); the dewatering beam (10) is connected to the top of the air guide shaft support (18), and the filling beam (9) is connected to the middle of the support (18).

10. A high-position water collection cooling tower according to claim 9, characterized in that: The multiple air guide shafts in the annular array have air inlets at different heights from the foundation, and the heights gradually increase from the center of the tower body to the outside.

Images