Energy-saving cooling tower of multi-mode power source of fan system

Abstract

The invention relates to the technical field of cooling towers, in particular to an energy-saving cooling tower of a multi-mode power source of a fan system, which comprises a tower body, a water distributor, an air conveying assembly, a water collecting tank and a water collecting assembly. Specifically, a cooling cavity is formed in the tower body, and filler is arranged in the cooling cavity; the water distributor is used for spraying circulating water to the filler; the air conveying assembly comprises a fan impeller, a motor and a water turbine; the motor and the water turbine are both used for driving the fan impeller to rotate, so that external air is pumped into the cooling cavity and then output; the water turbine is driven by water flow in the circulating water output pipe; the water collecting tank is used for collecting cooled circulating water; the water collecting assembly comprises a reciprocating screw rod, a sliding seat and a water collector; the fan impeller can drive the reciprocating screw rod to rotate when rotating; the water collector is positioned above the water distributor and the filler and is connected with the sliding seat; and after the reciprocating screw rod rotates, the water collector can be driven to slide in the height direction of the tower body. The cooling tower has the effects of reducing water resource and energy waste and improving the operation economy of the cooling tower.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooling towers, in particular to an energy-saving cooling tower with a multi-mode power source for a fan system. BACKGROUND

[0002] A cooling tower is a key heat dissipation device in the fields of power, chemical industry, HVAC, etc., and its core function is to release the waste heat in industrial circulating cooling water to the atmosphere through direct contact between water and air, so as to reduce the water temperature for recycling.

[0003] The working principle of the existing conventional cooling tower is as follows: high-temperature circulating water is first pumped to the top of the tower and uniformly sprayed onto the surface of the filler layer through a water distribution system. The core function of the filler is to disperse the water flow into a large area of water film or fine water droplets, thereby greatly increasing the contact area and contact time of water and air. At the same time, the fan installed at the top or side of the tower drives the ambient air to flow through the filler layer, which is in contact with the falling hot water in the opposite direction or transversely. In this process, heat is mainly transferred to the air through the evaporation of part of the water and the sensible heat transfer caused by the temperature difference between the water and the air. After completing the heat exchange, the water droplets with reduced temperature fall into the water collecting pool at the bottom of the tower and are pumped back to the heat source equipment by the circulating pump. The wet and hot air that has absorbed heat and water vapor rises to the top of the tower and is discharged after passing through a water collector. The water collector intercepts and captures water droplets carried in the airflow to reduce water loss. The captured water droplets are returned to the system.

[0004] However, the existing conventional cooling tower technology has significant deficiencies. On the one hand, the motor driving the fan has a huge energy consumption, which is the main operating cost source of the cooling tower. The circulating water pump head configured by the system to overcome the resistance of pipelines, valves, and nozzles often has a surplus, which is usually not effectively utilized, resulting in a certain waste of energy. On the other hand, the water droplets captured by the existing water collector rely mainly on gravity to overcome the surface tension effect to fall off the surface of the water collector, and the liquid film formed on the surface of the water collector after the water droplets are retained or continuously work will reduce the water recovery efficiency of the water collector, causing waste of water resources. SUMMARY

[0005] In order to reduce the waste of water resources and energy and improve the operating economy of the cooling tower, the present application provides an energy-saving cooling tower with a multi-mode power source for a fan system.

[0006] The energy-saving cooling tower with a multi-mode power source for a fan system provided by the present application adopts the following technical solution: An energy-saving cooling tower with a multi-mode power source for a fan system, comprising: a tower body, a cooling cavity is formed in the tower body, and a filler is arranged in the cooling cavity; a water distributor, configured to spray circulating water output by an external circulating water output pipe onto the filler; The air inlet assembly comprises a fan wheel, a motor and a water turbine; the fan wheel is rotatably arranged in the cooling cavity; the motor and the water turbine are used to drive the fan wheel to rotate, so as to draw external air from the bottom of the cooling cavity and then output the air from the top of the cooling cavity; the water turbine can drive the fan wheel to rotate by using the water flow in the circulating water output pipe; The water collecting pool is arranged at the bottom of the tower body and used to collect the cooled circulating water; The water collecting assembly comprises a reciprocating screw rod, a sliding seat and a water collector; the reciprocating screw rod is rotatably arranged relative to the tower body and can be driven to rotate by the fan wheel; the sliding seat is slidably arranged on the reciprocating screw rod and cooperates with the reciprocating screw rod; the water collector is arranged in the cooling cavity and located above the water distributor and the filler; the water collector is connected to the sliding seat; the reciprocating screw rod can drive the water collector to slide along the height direction of the tower body after being rotated.

[0007] By using the above technical scheme, the water resource and energy waste are reduced, and the operation economy of the cooling tower is improved. Specifically, on the one hand, the rotation of the fan wheel is driven by the motor and the water turbine; the water turbine uses the circulating water output from the circulating water output pipe as a power source, effectively uses the surplus head of the circulating water, thereby reducing the power consumption of the motor and reducing the energy waste. On the other hand, the fan wheel can drive the water collector to slide along the height direction of the tower body through the reciprocating screw rod and the sliding seat; the inertia of the sliding water collector can assist the falling of the attached water droplets, shorten the residence time of the water droplets on the surface of the water collector and destroy the formation of the water film, thereby improving the water collecting efficiency of the water collector and reducing the water resource waste. In combination with the above two effects, the operation economy of the cooling tower is improved.

[0008] Optionally, the water collecting assembly further comprises an elastic member and a magnetic member; the water collector is slidably connected to the sliding seat along the height direction of the tower body; the elastic member is arranged between the sliding seat and the water collector and used to make the water collector have a tendency to move away from the end of the sliding seat close to the water distributor; the magnetic member is mounted on the side wall of the cooling cavity; the magnetic member can magnetically attract the water collector when the water collector is lowered to a predetermined position, so that the water collector moves to the end of the sliding seat close to the water distributor against the elastic force of the elastic member.

[0009] By adopting the technical scheme, the water collector is attracted by the magnetic member in the descending stroke when the water collector reciprocates along the height direction of the tower body. When the water collector is switched from descending to ascending, the water collector moves to the water distributor end of the sliding seat due to the magnetic attraction of the magnetic member, and the elastic member is in the "energy storage" state. With the continuous ascending of the water collector, the water collector moves away from the magnetic member. When the magnetic attraction of the magnetic member cannot overcome the elastic force of the elastic member, the elastic member releases the elastic potential energy to drive the water collector to slide away from the water distributor end of the sliding seat and then be stationary relative to the sliding seat. In this process, due to the inertia of the water collector, the water droplets attached to the surface of the water collector move to the water distributor end of the water collector and then fall off (similar to the "tablecloth pulling" principle), thereby further shortening the residence time of the water droplets on the surface of the water collector and breaking the formation of the water film, so as to improve the water collection efficiency of the water collector and reduce the waste of water resources.

[0010] Optionally, the fan wheel is located below the filler, and the circulating water can drip onto the fan wheel after flowing through the filler.

[0011] By adopting the technical scheme, on the one hand, the heating of the heat exchanger by the hot air after heat exchange on the water turbine and the pipeline connected to the water turbine when the fan wheel is installed at the top of the tower body in the traditional design can be prevented, so that the temperature of the circulating water in the circulating water output pipe is high, and unnecessary energy consumption is increased for the cooling of the subsequent circulating water. On the other hand, when the circulating water drips onto the fan wheel after flowing through the filler, the high-speed rotating fan wheel can break the water droplets and form water mist, so that the circulating water is further heat-exchanged with the air and then collected by the water collecting pool, thereby further improving the overall heat exchange efficiency of the cooling tower and reducing the operating energy consumption of the cooling tower.

[0012] Optionally, the cooling cavity comprises a first chamber and a second chamber which are connected in series, the inner diameter of the second chamber is larger than that of the first chamber, the water collector, the water distributor and the filler are located in the first chamber, the fan wheel is located in the second chamber, and the diameter of the fan wheel matches the diameter of the filler.

[0013] By adopting the technical scheme, the fan wheel can cover the entire range of the filler, ensuring that all water droplets falling from the filler can contact the fan wheel. When the fan wheel breaks the water droplets, part of the water droplets will adhere to the surface of the fan wheel, and the water droplets will be thrown to the side wall of the second chamber by the fan wheel after the rotation of the fan wheel, and then fall into the water collecting pool along the side wall of the second chamber. The movement trajectory of the water droplets is in the shape of an inverted "L", the contact and heat exchange between the circulating water and the external air entering the cooling cavity are prolonged, and the overall heat exchange efficiency of the cooling tower is further improved, and the operating energy consumption of the cooling tower is reduced.

[0014] Optionally, the control assembly further comprises a first control valve and a second control valve; the water inlet of the water turbine is communicated with the external circulating water output pipe, the water outlet of the water turbine is communicated with the water inlet of the water distributor, and a communication pipe for communicating the water inlet of the water distributor and the external circulating water output pipe is arranged between the water inlet of the water distributor and the external circulating water output pipe; the first control valve is used for controlling the opening and closing of the water inlet of the water turbine, and the second control valve is used for controlling the opening and closing of the communication pipe.

[0015] By using the above technical scheme, the opening and closing of the water turbine can be automatically controlled according to the temperature value of the circulating water to be cooled by the first temperature sensor and the second temperature sensor, and the first control valve and the second control valve. Specifically, the circulating water temperature in the external circulating water output pipe and the circulating water temperature in the water collecting pool are monitored by the first temperature sensor and the second temperature sensor respectively, and the temperature difference between the two is calculated by the control host. When the temperature value of the circulating water to be cooled is high, the control host automatically controls the first control valve to close the water inlet of the water turbine and controls the second control valve to open the communication pipe, so that the circulating water is directly input into the water distributor. The high-lift circulating water increases the output flow of the water distributor, thereby increasing the cooling efficiency of the cooling tower. When the temperature value of the circulating water to be cooled is low, the control host automatically controls the first control valve to open the water inlet of the water turbine and controls the second control valve to close the communication pipe.

[0016] Optionally, the control assembly further comprises a first temperature sensor, a second temperature sensor and a control host; the first temperature sensor is used for monitoring the temperature of the circulating water output by the external circulating water output pipe, and the second temperature sensor is used for monitoring the temperature of the cooled circulating water in the water collecting pool; the control host is electrically connected with the motor, the first control valve, the second control valve, the first temperature sensor and the second temperature sensor.

[0017] By using the above technical scheme, the opening and closing of the water turbine can be automatically controlled according to the temperature value of the circulating water to be cooled by the first temperature sensor and the second temperature sensor, and the first control valve and the second control valve. Specifically, the circulating water temperature in the external circulating water output pipe and the circulating water temperature in the water collecting pool are monitored by the first temperature sensor and the second temperature sensor respectively, and the temperature difference between the two is calculated by the control host. When the temperature value of the circulating water to be cooled is high, the control host automatically controls the first control valve to close the water inlet of the water turbine and controls the second control valve to open the communication pipe, so that the circulating water is directly input into the water distributor. The high-lift circulating water increases the output flow of the water distributor, thereby increasing the cooling efficiency of the cooling tower. When the temperature value of the circulating water to be cooled is low, the control host automatically controls the first control valve to open the water inlet of the water turbine and controls the second control valve to close the communication pipe.

[0018] Optionally, a plurality of baffle plates are arranged between the tower body and the water collecting pool, one end of each baffle plate is connected to the bottom surface of the tower body, and the other end is connected to the top surface of the water collecting pool, the plurality of baffle plates are arranged annularly around the tower body and the water collecting pool to form a closed cavity between the tower body and the water collecting pool.

[0019] By adopting the above technical solution, the plurality of annularly arranged baffle plates form a closed cavity between the tower body and the water collecting pool, which can not only ensure that the impeller wheel smoothly draws external air from the bottom of the tower body to maintain the normal ventilation and heat exchange process of the cooling tower, but also block external impurities from entering the water collecting pool to avoid impurity pollution of the circulating water or cause pipeline blockage. In addition, the baffle plates can also shield the water collecting pool from external sunlight to prevent the direct sunlight from heating the cooled circulating water in the water collecting pool, thereby ensuring the cooling effect of the circulating water and improving the operation efficiency and economy of the cooling tower.

[0020] Optionally, the filler is an inclined wave filler.

[0021] By adopting the above technical solution, the inclined wave filler can disperse the water flow into a large area of water film or fine water droplets, greatly increase the contact area and contact time of water and air, and make the airflow produce a certain rotation or more complex flow in the inclined channel, thereby enhancing the heat exchange effect of water and air.

[0022] Optionally, the water outlet of the water collecting pool is connected with a water pump for conveying the cooled circulating water in the water collecting pool to an external circulating water input pipe.

[0023] By adopting the above technical solution, the water pump can convey the cooled circulating water in the water collecting pool to the external circulating water input pipe to realize the recycling of the circulating water.

[0024] Optionally, a water purification filter element is arranged in the water outlet of the water collecting pool.

[0025] By adopting the above technical solution, the water purification filter element can filter the cooled circulating water to remove impurities in the water and prevent the impurities from entering the external circulating water input pipe to affect the normal operation of the entire circulating system.

[0026] In summary, the present application has the following beneficial technical effects: 1. It reduces water and energy waste and improves the operational economy of the cooling tower. Specifically, on the one hand, the rotation of the impeller is driven by both a motor and a water turbine. The water turbine uses the circulating water output from the circulating water outlet pipe as its power source, effectively utilizing the excess head of the circulating water, thereby reducing the motor's energy consumption and minimizing energy waste. On the other hand, the rotation of the impeller drives the water collector to slide along the height of the tower via a reciprocating screw and slide block. The inertia of the water collector during sliding helps the attached water droplets fall, shortening the residence time of the water droplets on the surface of the water collector and disrupting the formation of the water film, thus improving the water collection efficiency of the water collector and reducing water waste. Combining these two effects achieves the goal of improving the operational economy of the cooling tower. 2. As the water collector slides back and forth along the height of the tower, it is attracted by the magnetic component during its descent. When the water collector transitions from descent to ascent, the magnetic attraction of the magnetic component causes it to overcome the elastic force of the elastic component and move towards the end of the slide block closer to the water distributor. At this point, the elastic component is in an "energy storage" state. As the water collector continues to rise, it moves further away from the magnetic component. When the magnetic attraction of the magnetic component can no longer overcome the elastic force of the elastic component, the elastic component releases its elastic potential energy, causing the water collector to quickly slide towards the end of the slide block away from the water distributor and then come to rest relative to the slide block. During this process, the inertia generated by the water collector causes the water droplets adhering to its surface to move towards the end closer to the water distributor and fall off (similar to the "pulling a tablecloth" principle), thereby further shortening the residence time of the water droplets on the surface of the water collector and disrupting the formation of the water film, thus improving the water collection efficiency and reducing water waste. 3. On the one hand, it prevents the heating of the water turbine and its connecting pipes by the hot air after heat exchange, which would occur when the fan impeller is installed at the top of the tower in the traditional design. This would cause the circulating water temperature in the output pipe to rise, resulting in unnecessary energy consumption for subsequent cooling. On the other hand, when the circulating water drips onto the fan impeller after flowing through the packing, the high-speed rotating impeller breaks up the water droplets and forms a water mist. This allows the circulating water to further exchange heat with the air before being collected in the water collection tank, thereby further improving the overall heat exchange efficiency of the cooling tower and reducing its operating energy consumption. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0028] Figure 2 This mainly demonstrates the operating status of the water collection component in Embodiment 1 of this application.

[0029] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this application.

[0030] Reference signs: 100, circulating water output pipe; 200, circulating water input pipe; 1, tower body; 11, cooling cavity; 111, first chamber; 112, second chamber; 12, chute; 2, filler; 3, water distributor; 4, air conveying assembly; 41, air blade wheel; 42, motor; 43, water turbine; 5, water collecting pool; 51, water pump; 52, water purification filter element; 6, water collecting assembly; 61, reciprocating screw rod; 62, sliding seat; 621, protruding structure; 63, water collector; 631, sliding block; 64, elastic member; 65, magnetic member; 7, control assembly; 71, first control valve; 72, second control valve; 73, first temperature sensor; 74, second temperature sensor; 75, control host; 8, communication pipe; 9, louver. DETAILED DESCRIPTION

[0031] The following Figures 1-3 The present application is further described in detail.

[0032] The embodiment of the present application discloses an energy-saving cooling tower with a multi-mode power source of a fan system.

[0033] Embodiment 1 With reference to Figure 1 , the energy-saving cooling tower comprises a tower body 1, a filler 2, a water distributor 3, an air conveying assembly 4, a water collecting pool 5, a water collecting assembly 6 and a control assembly 7.

[0034] Specifically, in the embodiment, the tower body 1 is in a cylindrical shape, and is made of stainless steel or aluminum alloy material to ensure the strength and corrosion resistance of the tower body 1. A heat insulation coating is sprayed on the outer surface of the tower body 1 to prevent the tower body 1 from being heated by direct sunlight. A cylindrical cooling cavity 11 is formed in the tower body 1 and extends through the top and bottom of the tower body 1, and the filler 2 and the water distributor 3 are both installed in the cooling cavity 11.

[0035] The water distributor 3 is located above the filler 2, and is used for uniformly spraying the circulating water output by the external circulating water output pipe 100 on the filler 2. The water distributor 3 is a fixed water distributor, which directly sprays the circulating water on the filler 2 through a plurality of spray heads, and has the advantages of simple structure and convenient maintenance.

[0036] The filler 2 is used for dispersing the circulating water flowing through the filler 2 into a large-area water film or small water droplets, increasing the contact area and contact time of the circulating water and air, and improving the heat exchange efficiency. The filler 2 is selected to be a slanting wave filler, which can make the airflow rotate or flow more complex in the inclined channel of the filler 2, and enhance the heat exchange effect of the water and air. In other embodiments, the water distributor 3 can also be selected to be a rotary water distributor, which uniformly sprinkles the circulating water on the filler 2 through rotary spray heads, and has the advantages of uniform water distribution and large coverage area; and the filler 2 can also be selected to be one of an S-wave filler, a point-wave filler and a hexagonal honeycomb filler according to the requirement.

[0037] In the embodiment, the air inlet assembly 4 is used to draw external air into the cooling cavity 11 for heat exchange with the circulating water, and the air inlet assembly 4 comprises a fan wheel 41, a motor 42 and a water turbine 43. The fan wheel 41 is rotatably installed at the top end of the cooling cavity 11 through a bearing frame fixed on the tower body 1, and the fan wheel 41 is located above the water distributor 3 and the filler 2, and the rotation axis of the fan wheel 41 is coaxial with the central axis of the cooling cavity 11. The fan wheel 41 is selected as an axial flow fan wheel, which has the characteristics of large flow and high efficiency.

[0038] The motor 42 and the water turbine 43 are both used to drive the fan wheel 41 to rotate, so that the fan wheel 41 draws external air from the bottom of the cooling cavity 11 and then outputs from the top of the cooling cavity 11. A transmission box is installed in the cooling cavity 11, and the rotating shaft of the fan wheel 41 is coaxially fixedly connected with the output shaft of the transmission box through a shaft coupling. The water turbine 43 is driven by the water flow in the circulating water output pipe 100, and the output shaft of the water turbine 43 is coaxially fixedly connected with the input shaft of the transmission box through a one-way transmission ratchet. The function of the ratchet is to enable the water turbine 43 to drive the fan wheel 41 to rotate, but the fan wheel 41 cannot drive the water turbine 43 to rotate after rotating. The motor 42 is fixed outside the tower body 1, and the output shaft of the motor 42 is also coaxially fixedly connected with the input shaft of the transmission box through a shaft coupling and a transmission shaft. In other embodiments, the fan wheel 41 can also be selected as a centrifugal fan wheel according to the needs of the use scene, and the centrifugal fan wheel has the characteristics of high wind pressure and low noise.

[0039] In the embodiment, the water collecting pool 5 is installed at the bottom of the tower body 1 for collecting the cooled circulating water dripping from the filler 2; the size of the water collecting pool 5 matches the size of the bottom surface of the tower body 1, so as to ensure that it can receive water droplets falling from any part of the filler 2. The water collecting pool 5 is made of stainless steel as a whole, so as to ensure its strength and corrosion resistance.

[0040] The water collecting assembly 6 comprises a reciprocating wire rod 61, a sliding seat 62 and a water collector 63. The reciprocating wire rod 61 is fixed on the fan wheel 41 and coaxial with the fan wheel 41, and the fan wheel 41 can drive the reciprocating wire rod 61 to rotate when the fan wheel 41 rotates. The sliding seat 62 is slidingly arranged on the reciprocating wire rod 61 and connected with the reciprocating wire rod 61. The water collector 63 is located above the water distributor 3 and the filler 2 and below the fan wheel 41, and the water collector 63 is slidingly arranged in the cooling cavity 11 along the height direction of the tower body 1 through the sliding cooperation of the sliding block 631 fixed on the side wall of the water collector 63 and the sliding groove 12 opened on the side wall of the cooling cavity 11 of the tower body 1, and the sliding cooperation of the sliding block 631 and the sliding groove 12 can limit the rotation of the water collector 63 relative to the tower body 1. The water collector 63 is connected with the sliding seat 62, and the reciprocating wire rod 61 can drive the sliding seat 62 and the water collector 63 to slide along the height direction of the tower body 1 after rotating.

[0041] Thus, the rotation of the wind wheel 41 is driven by the motor 42 and the water wheel 43 simultaneously, the water wheel 43 uses the surplus head of the circulating water as the power water source, thereby reducing the power consumption of the motor 42 and saving energy. Moreover, the wind wheel 41 rotates to drive the water collector 63 to slide along the height direction of the tower body 1 through the reciprocating screw rod 61 and the sliding seat 62. The inertia of the water collector 63 during sliding can assist the falling of the attached water droplets, shorten the residence time of the water droplets on the surface of the water collector 63, and destroy the formation of the water film, thereby improving the water collection efficiency of the water collector 63 and reducing the waste of water resources. The combination of the two effects achieves the purpose of improving the operation economy of the cooling tower.

[0042] Preferably, the water outlet of the water collecting pool 5 is connected with a water pump 51, which is used to deliver the cooled circulating water in the water collecting pool 5 to the external circulating water input pipe 200, realizing the recycling of the circulating water. The water outlet of the water collecting pool 5 is provided with a water purification filter core 52, which can filter the cooled circulating water to remove impurities in the water, preventing the impurities from entering the external circulating water input pipe 200 and affecting the normal operation of the entire circulating system.

[0043] Referring to Figure 1 and Figure 2 In the embodiment, the water collector 63 is slidingly connected to the sliding seat 62 along the height direction of the tower body 1. The sliding seat 62 is a cuboid-shaped member, and the sliding seat 62 slidingly connects with the water collector 63 while being able to limit the relative rotation between the sliding seat 62 and the water collector 63. The outer wall of the sliding seat 62 is provided with a protruding structure 621 at both ends, which is used to limit the sliding stroke of the water collector 63, and the water collector 63 slides between the protruding structures 621 at both ends of the sliding seat 62.

[0044] The water collecting assembly 6 further comprises an elastic member 64 and a magnetic member 65. The elastic member 64 is a spring, which is arranged between the sliding seat 62 and the water collector 63, and is used to make the water collector 63 have a tendency to move away from the end of the water distributor 3. The elastic member 64 is sleeved on the outside of the sliding seat 62, one end of which is fixedly connected with the water collector 63, and the other end is fixedly connected with the protruding structure 621 at the bottom end of the sliding seat 62. The magnetic member 65 is a permanent magnet, which is fixedly installed on the side wall of the cooling cavity 11. When the water collector 63 is lowered to a predetermined position, the magnetic member 65 can magnetically attract the water collector 63, so that the water collector 63 moves to the end of the water distributor 3 of the sliding seat 62 against the elastic force of the elastic member 64.

[0045] Thus, the water collector 63 is magnetically attracted by the magnetic member 65 when it reciprocally slides along the tower body 1 in the descending stroke. When the water collector 63 is switched from descending to ascending, the water collector 63 is moved to the end of the slide base 62 close to the water distributor 3 against the elastic force of the elastic member 64 due to the magnetic attraction of the magnetic member 65 in the ascending stroke. At this time, the elastic member 64 is in the "energy storage" state. With the continuous ascending of the water collector 63, the water collector 63 is away from the magnetic member 65. When the magnetic attraction of the magnetic member 65 cannot overcome the elastic force of the elastic member 64, the elastic member 64 releases the elastic potential energy to drive the water collector 63 to slide away from the end of the slide base 62 close to the water distributor 3 and then be stationary relative to the slide base 62. In this process, due to the inertia of the water collector 63, the water droplets attached to the surface of the water collector 63 move to the end of the water collector 63 close to the water distributor 3 and then fall off (similar to the "tablecloth pulling" principle), thereby further shortening the residence time of the water droplets on the surface of the water collector 63 and breaking the formation of the water film, so as to improve the water collection efficiency of the water collector 63 and reduce the waste of water resources.

[0046] Referring to Figure 1 In the present embodiment, the water inlet of the water turbine 43 is communicated with the external circulating water output pipe 100, the water outlet of the water turbine 43 is communicated with the water inlet of the water distributor 3, and a communication pipe 8 for communicating the water inlet of the water distributor 3 and the external circulating water output pipe 100 is arranged between the water inlet of the water distributor 3 and the external circulating water output pipe 100.

[0047] The control assembly 7 comprises a first control valve 71, a second control valve 72, a first temperature sensor 73, a second temperature sensor 74, and a control host 75. The first control valve 71 is arranged at the water inlet of the water turbine 43 and is used to control the on-off of the water inlet of the water turbine 43. The second control valve 72 is arranged on the communication pipe 8 and is used to control the on-off of the communication pipe 8. The first temperature sensor 73 is arranged on the external circulating water output pipe 100 and is used to monitor the temperature of the circulating water output by the external circulating water output pipe 100. The second temperature sensor 74 is arranged in the water collecting pool 5 and is used to monitor the temperature of the cooled circulating water in the water collecting pool 5. The control host 75 is specifically a computer internally provided with control software and programming software, and is electrically connected with the motor 42, the first control valve 71, the second control valve 72, the first temperature sensor 73, and the second temperature sensor 74.

[0048] In this way, the control host 75 can automatically control the start and stop of the water turbine 43 and the output power of the motor 42 according to the temperature value of the circulating water that needs to be cooled. Specifically, the first temperature sensor 73 and the second temperature sensor 74 are used to monitor the temperature of the circulating water in the external circulating water output pipe 100 and the water collecting pool 5, respectively, and the control host 75 calculates the temperature difference of the circulating water at the two places. When the temperature value of the circulating water that needs to be reduced is high, the control host 75 automatically controls the first control valve 71 to close the water inlet of the water turbine 43 to stop the water turbine 43, and controls the motor 42 to increase the output power; at the same time, the second control valve 72 is controlled to open the connecting pipe 8, so that the circulating water is directly input into the water distributor 3. The high-lift circulating water increases the output flow of the water distributor 3, thereby increasing the cooling efficiency of the cooling tower. When the temperature value of the circulating water that needs to be reduced is low, the control host 75 automatically controls the first control valve 71 to open the water inlet of the water turbine 43 to start the water turbine 43, and controls the motor 42 to reduce the output power; at the same time, the second control valve 72 is controlled to close the connecting pipe 8. The water turbine 43 drives the fan wheel 41 to rotate by consuming the excess lift of the circulating water, thereby reducing the energy consumption of the motor 42 and reducing energy waste.

[0049] With reference to Figure 1 In the present embodiment, a plurality of louvers 9 are installed between the tower body 1 and the water collecting pool 5; one end of the louver 9 is connected to the bottom surface of the tower body 1, and the other end is connected to the top surface of the water collecting pool 5. The plurality of louvers 9 are arranged in a ring shape around the tower body 1 and the water collecting pool 5, and are sealingly abutted between adjacent louvers 9 to form a closed cavity between the tower body 1 and the water collecting pool 5.

[0050] In this way, the fan wheel 41 can smoothly draw in external air from the bottom of the tower body 1, maintain the normal ventilation and heat exchange process of the cooling tower, and block external impurities from entering the water collecting pool 5, thereby preventing the impurities from polluting the circulating water or causing pipeline blockage. In addition, the louver 9 can also shield the water collecting pool 5 from external sunlight, prevent the direct sunlight from heating the cooled circulating water in the water collecting pool 5, ensure the cooling effect of the circulating water, and improve the operation efficiency and economy of the cooling tower.

[0051] The implementation principle of the embodiment 1 is that the rotation of the wind wheel 41 is driven by the motor 42 and the water turbine 43 at the same time, the water turbine 43 uses the circulating water output from the circulating water output pipe 100 as a power water source, effectively uses the surplus head of the circulating water, reduces the power consumption of the motor 42, and reduces the energy waste. Moreover, the wind wheel 41 can drive the water collector 63 to slide along the height direction of the tower body 1 through the reciprocating screw rod 61 and the sliding seat 62 after the rotation of the wind wheel 41, the inertia of the water collector 63 during the sliding can assist the falling of the attached water droplets, shorten the residence time of the water droplets on the surface of the water collector 63 and destroy the formation of the water film, thereby improving the water collection efficiency of the water collector 63 and reducing the waste of water resources. Moreover, the water collector 63 will be attracted by the magnetic member 65 in the descending stroke, and when the water collector 63 is converted from descending to ascending, the water collector 63 will move to the one end of the sliding seat 62 away from the water distributor 3 due to the magnetic attraction of the magnetic member 65 in the ascending stroke, at this time, the elastic member 64 is in the "energy storage" state. With the continuous rising of the water collector 63, the water collector 63 is away from the magnetic member 65. When the magnetic attraction of the magnetic member 65 cannot overcome the elastic force of the elastic member 64, the elastic member 64 releases the elastic potential energy to drive the water collector 63 to slide away from the one end of the sliding seat 62 away from the water distributor 3 and then be stationary relative to the sliding seat 62. In this process, due to the inertia generated by the water collector 63, the water droplets attached to the surface of the water collector 63 move to the one end of the water collector 63 close to the water distributor 3 and then fall (similar to the "tablecloth pulling" principle), thereby further shortening the residence time of the water droplets on the surface of the water collector 63 and destroying the formation of the water film, so as to improve the water collection efficiency of the water collector 63 and reduce the waste of water resources, and improve the economic efficiency of the cooling tower.

[0052] Embodiment 2 With reference to Figure 3 The difference between the embodiment and the embodiment 1 is that the wind wheel 41 is rotatably installed at the bottom end of the cooling cavity 11 through the bearing frame fixed on the tower body 1, the wind wheel 41 is located below the filler 2, and the circulating water can drop onto the wind wheel 41 after flowing through the filler 2. The cooling cavity 11 includes a first chamber 111 and a second chamber 112 coaxially connected, the inner diameter of the second chamber 112 is greater than that of the first chamber 111, the water collector 63, the water distributor 3 and the filler 2 are located in the first chamber 111, and the wind wheel 41 is located in the second chamber 112, and the diameter of the wind wheel 41 matches the diameter of the filler 2.

[0053] The implementation principle of the embodiment 2 is that the fan wheel 41 is designed below the filler 2 to prevent the heat of the heat-exchanged hot air from heating the water turbine 43 and the pipeline connected with the water turbine 43 when the fan wheel 41 is installed at the top of the tower body 1 in the conventional design manner, so that the temperature of the circulating water in the circulating water output pipe 100 is increased, and the cooling energy consumption of the subsequent circulating water is increased. Moreover, when the circulating water drops on the fan wheel 41 after flowing through the filler 2, the high-speed rotating fan wheel 41 will break the water drops and form water mist, so that the circulating water is further heat-exchanged with the air and then collected by the water collecting pool 5, thereby further improving the heat exchange efficiency of the whole cooling tower and reducing the operation energy consumption of the cooling tower. Moreover, in the process of breaking the water drops by the fan wheel 41, a part of the water drops will be attached to the surface of the fan wheel 41, and the water drops will be thrown to the side wall of the second chamber 112 by the fan wheel 41 after the fan wheel 41 rotates, and then drop to the water collecting pool 5 along the side wall of the second chamber 112. The movement track of the water drops is in the shape of inverted "L", the contact heat exchange between the circulating water and the external air entering the cooling chamber 11 is prolonged, and the heat exchange efficiency of the whole cooling tower is further improved, and the operation energy consumption of the cooling tower is reduced.

[0054] The above are the preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An energy efficient cooling tower for a multi-mode power source of a fan system, characterized in that, The application relates to a cooling tower. The cooling tower comprises a tower body (1), a cooling cavity (11) formed in the tower body (1), a filler (2) arranged in the cooling cavity (11), a water distributor (3) for spraying circulating water output by an external circulating water output pipe (100) on the filler (2), a wind conveying assembly (4) comprising a wind blade wheel (41), a motor (42) and a water turbine (43), the wind blade wheel (41) being rotationally arranged in the cooling cavity (11), the motor (42) and the water turbine (43) being used for driving the wind blade wheel (41) to rotate so as to suck external air from the bottom of the cooling cavity (11) and then output the air from the top of the cooling cavity (11), the water turbine (43) being capable of driving the wind blade wheel (41) to rotate by using water flow in the circulating water output pipe (100), a water collecting pool (5) arranged at the bottom of the tower body (1) and used for collecting cooled circulating water, a water collecting assembly (6) comprising a reciprocating wire rod (61), a sliding seat (62) and a water collector (63), the reciprocating wire rod (61) being rotationally arranged relative to the tower body (1) and capable of being driven to rotate by the wind blade wheel (41) when the wind blade wheel (41) rotates, the sliding seat (62) being slidingly arranged on the reciprocating wire rod (61) and matched with the reciprocating wire rod (61), the water collector (63) being arranged in the cooling cavity (11) and located above the water distributor (3) and the filler (2), the water collector (63) being connected with the sliding seat (62), and the reciprocating wire rod (61) being capable of driving the water collector (63) to slide along the height direction of the tower body (1) after being rotated. The water collecting assembly (6) further comprises an elastic member (64) and a magnetic member (65), the water collector (63) is slidingly connected with the sliding seat (62) along the height direction of the tower body (1), the elastic member (64) is arranged between the sliding seat (62) and the water collector (63) and is used for enabling the water collector (63) to have a tendency of moving away from the end of the sliding seat (62) which is far away from the water distributor (3), and the magnetic member (65) is arranged on the side wall of the cooling cavity (11) and is capable of magnetically attracting the water collector (63) when the water collector (63) is lowered to a predetermined position, so that the water collector (63) is moved to the end of the sliding seat (62) which is close to the water distributor (3) by overcoming the elastic force of the elastic member (64). The wind blade wheel (41) is located below the filler (2), and circulating water flowing through the filler (2) can drop on the wind blade wheel (41). The cooling cavity (11) comprises a first cavity (111) and a second cavity (112) which are connected in series, the inner diameter of the second cavity (112) is larger than that of the first cavity (111), the water collector (63), the water distributor (3) and the filler (2) are all arranged in the first cavity (111), the wind blade wheel (41) is arranged in the second cavity (112), and the diameter of the wind blade wheel (41) matches the diameter of the filler (2). ​ 2. An energy efficient cooling tower with multi-mode power source for a fan system as claimed in claim 1, wherein: ​ 3. An energy efficient cooling tower with multi-mode power source for a fan system as claimed in claim 1, wherein: ​ 4. An energy efficient cooling tower with multi-mode power source for a fan system as claimed in claim 3, wherein: ​ 5. An energy efficient cooling tower with multi-mode power source for a fan system as claimed in claim 1, wherein: Further comprising a control assembly (7) including a first control valve (71) and a second control valve (72); a water inlet of the water turbine (43) is communicated with an external circulating water output pipe (100), a water outlet of the water turbine (43) is communicated with a water inlet of the water distributor (3), and a communicating pipe (8) for communicating the water inlet of the water distributor (3) and the external circulating water output pipe (100) is arranged between the water inlet of the water distributor (3) and the external circulating water output pipe (100); the first control valve (71) is used for controlling the water turbine (43) to be connected or disconnected, and the second control valve (72) is used for controlling the communicating pipe (8) to be connected or disconnected.

6. An energy efficient cooling tower with multi-mode power source for a fan system as claimed in claim 5, wherein: The control assembly (7) further comprises a first temperature sensor (73), a second temperature sensor (74) and a control host (75); the first temperature sensor (73) is used for monitoring the circulating water temperature output by the external circulating water output pipe (100), the second temperature sensor (74) is used for monitoring the circulating water temperature cooled in the water collecting pool (5); and the control host (75) is electrically connected with the motor (42), the first control valve (71), the second control valve (72), the first temperature sensor (73) and the second temperature sensor (74).

7. An energy efficient cooling tower with multi-mode power source for a fan system as claimed in claim 1, wherein: A plurality of louvers (9) are arranged between the tower body (1) and the water collecting pool (5), one end of the louver (9) is connected with the bottom surface of the tower body (1), the other end is connected with the top surface of the water collecting pool (5), and the plurality of louvers (9) are arranged annularly around the tower body (1) and the water collecting pool (5) to form a closed cavity between the tower body (1) and the water collecting pool (5).

8. An energy efficient cooling tower with multi-mode power source for a fan system as claimed in claim 1, wherein: The filler (2) is a slanted folded wave filler.

9. An energy efficient cooling tower with multi-mode power source for a fan system as claimed in claim 1, wherein: A water pump (51) for conveying the cooled circulating water in the water collecting pool (5) to an external circulating water input pipe (200) is connected with a water outlet of the water collecting pool (5).

10. An energy efficient cooling tower with multi-mode power source for a fan system as claimed in claim 1, wherein: A water purification filter core (52) is arranged in the water outlet of the water collecting pool (5).

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