Variable-pitch water turbine, air cooling heat dissipation device and cooling tower water cooling system

Abstract

The invention discloses a variable-pitch water turbine, an air cooling heat dissipation device and a cooling tower water cooling system. The core lies in that the variable-pitch water turbine comprises a fan, a variable-pitch impeller and a temperature-sensitive hydrogel telescopic assembly; the fan is in transmission connection with the variable-paddle impeller, and the fan is used for rotating under the driving of the variable-paddle impeller; the variable-pitch power acquisition part of the variable-pitch impeller is in transmission connection with the temperature-sensitive hydrogel telescopic assembly; when the working environment temperature of the temperature-sensitive hydrogel telescopic assembly is higher than a preset value, the telescopic change of the temperature-sensitive hydrogel telescopic assembly is used for driving the variable-paddle impeller to change the paddle into a state of increasing the incident flow surface; when the working environment temperature of the temperature-sensitive hydrogel telescopic assembly is lower than a preset value, the telescopic change of the temperature-sensitive hydrogel telescopic assembly is used for driving the variable-pitch impeller to change the pitch to be in a state of reducing the incident flow surface; after the scheme is adopted, the problem that the air speed cannot be automatically regulated and controlled at different temperatures in the prior art can be solved.

Description

Technical Field

[0001] This invention relates to the technical field of water turbines, and particularly to a pitch turbine, an air-cooled heat dissipation device, and a cooling tower water-cooling system. Background Technology

[0002] In actual production operation, the cooling water circulation system in a cooling tower has abundant residual energy in the return water pressure. If this energy is not utilized, it will lead to a waste of water energy. Therefore, a device to collect the energy from the pipeline is needed. Currently, water turbines are commonly used to collect and utilize this water energy. Traditional cooling towers generally use a water turbine to generate electricity to power a motor, which then drives a fan to draw air out, promoting heat dissipation from the cooling tower water to the outside environment, thereby achieving a cooling effect. Motor-driven fans are high-energy-consuming devices. With the country's series of energy-saving and emission-reduction initiatives, traditional electric fan cooling methods no longer meet national development needs. Optimization and improvement of electric fans are becoming increasingly necessary, and using a water turbine to directly drive the fan has become an ideal solution. Furthermore, the required fan speed is greatly affected by temperature. In hot seasons, it needs to operate at full load, while in cold seasons, the hot water in the circulation system can be cooled by the air during the flow of air through the pipeline, eliminating the need for a fan for heat dissipation. For most cooling towers, the water temperature can meet the requirements when it is below a certain critical temperature (such as 32°C), and the cooling effect can be achieved without the help of a cooling fan. Therefore, the fan speed should be adjusted according to the water temperature. When the temperature is below the critical temperature, the blade angle can be reduced to reduce the fan speed, thereby reducing wear caused by transmission and extending the life of the equipment. When the temperature is above the critical temperature, the blade angle can be increased to increase the fan speed and achieve a better cooling effect.

[0003] Therefore, there is an urgent need for a technical solution that can automatically adjust wind speed at different temperatures to meet the application requirements of existing technologies. Summary of the Invention

[0004] The purpose of this invention is to provide a pitch turbine, an air-cooled heat dissipation device, and a cooling tower water-cooling system to solve the problem that existing technologies cannot achieve automatic wind speed control at different temperatures.

[0005] To address the aforementioned technical problems, this invention provides a variable pitch turbine, comprising a fan, a variable pitch impeller, and a temperature-sensitive hydrogel expansion assembly; the fan is driven by the variable pitch impeller and rotates under its drive; the variable pitch power acquisition point of the variable pitch impeller is driven by the temperature-sensitive hydrogel expansion assembly; when the operating ambient temperature of the temperature-sensitive hydrogel expansion assembly is higher than a preset value, the expansion and contraction of the temperature-sensitive hydrogel expansion assembly drives the variable pitch impeller to a state with an increased upstream face; when the operating ambient temperature of the temperature-sensitive hydrogel expansion assembly is lower than the preset value, the expansion and contraction of the temperature-sensitive hydrogel expansion assembly drives the variable pitch impeller to a state with a reduced upstream face.

[0006] In one embodiment, a speed increaser is connected between the fan and the variable impeller, the power input of the speed increaser is driven to the power output of the variable impeller, and the power output of the speed increaser is driven to the power input of the fan.

[0007] In one embodiment, the central rotating shaft of the variable impeller is a self-rotating structure, and the outer peripheral wall of the central rotating shaft is provided with a pitch power acquisition point for the variable impeller. The rotation of the central rotating shaft is used to control the variable impeller to change pitch. The temperature-sensitive hydrogel telescopic component is a tubular spring structure. The temperature-sensitive hydrogel telescopic component is sleeved on the outside of the central rotating shaft, and the extension and retraction of the temperature-sensitive hydrogel telescopic component is used to drive the central rotating shaft to rotate.

[0008] In one embodiment, the variable propeller impeller's pitch power acquisition point is a groove structure, which is obliquely arranged relative to the axial direction of the central rotating shaft; the central rotating shaft is provided with a fixing ring, which is arranged around the periphery of the central rotating shaft, and the temperature-sensitive hydrogel telescopic component is provided on the fixing ring. The end of the temperature-sensitive hydrogel telescopic component opposite to the fixing ring is provided with a guide ring, and the guide ring is provided with a guide push rod, which is slidably installed in the groove structure.

[0009] In one embodiment, the variable impeller includes an impeller frame, blades, and connecting rods; a central rotating shaft is mounted at the rotation center of the impeller frame, and the impeller frame and the central rotating shaft are rotatable relative to each other; multiple blades are arranged around the periphery of the impeller frame, and all multiple blades are rotatably mounted on the impeller frame; multiple connecting rods are respectively drivingly connected between the multiple blades and the central rotating shaft.

[0010] In one embodiment, the central rotating shaft is provided with a fixing ring, which is arranged around the periphery of the central rotating shaft. The fixing ring is provided with a plurality of mounting holes, which are arranged separately around the periphery of the central rotating shaft. Each of the multiple blades is provided with a blade mounting hole. One end of each of the multiple connecting rods is rotatably connected to the plurality of mounting holes, and the other end of each of the multiple connecting rods is rotatably connected to the plurality of blade mounting holes.

[0011] In one embodiment, the outer surface of the thermosensitive hydrogel stretching assembly is covered with a protective layer.

[0012] To solve the above-mentioned technical problems, the present invention provides an air-cooled heat dissipation device, including a pipe shell, an assembly cavity shell, and the aforementioned variable pitch turbine; the assembly cavity shell is provided outside the pipe shell, and the variable pitch impeller is provided inside the pipe shell, with the power output of the variable pitch impeller extending into the interior of the assembly cavity shell; the fan is provided outside the assembly cavity shell, with the power input of the fan extending into the interior of the assembly cavity shell and being drively connected to the power output of the variable pitch impeller.

[0013] To address the aforementioned technical problems, the present invention provides a cooling tower water cooling system, comprising a system shell, a circulation mechanism, and the aforementioned pitch turbine; a circulating water tank is provided at the lower interior of the system shell, and the pitch turbine and a spray mechanism are provided at the upper interior of the system shell, the pitch turbine being connected between the spray mechanism and the circulation mechanism, and the fan being directed towards the air outlet of the system shell; the circulation mechanism is used to pump water from the circulating water tank and deliver it to the pitch turbine.

[0014] In one embodiment, the circulation mechanism includes a circulation pump, a heat exchanger, monitoring instruments, and valves connected in the same pipeline, and the heat exchanger is connected between the circulation pump and the pitch turbine.

[0015] The beneficial effects of this invention are as follows: 1. The temperature-sensitive hydrogel stretching component of the present invention is made of intelligent hydrogel material. Therefore, the pitch turbine structure designed with intelligent hydrogel material is simple and low in cost. It can automatically adjust the blade opening angle of the pitch turbine by utilizing the material properties without the need for electronic devices such as temperature sensors or manual adjustment.

[0016] 2. This invention eliminates the high-energy-consuming device of an electric motor, using a variable impeller to directly drive a fan for cooling and heat dissipation, thus achieving energy saving. This invention adjusts the blade opening angle of the variable impeller according to the cooling water temperature in different seasons. When the water temperature is low and fan cooling is not required, the speed of the variable impeller can be reduced or stopped, reducing wear on the transmission system and lowering maintenance costs. Attached Figure Description

[0017] To more clearly illustrate the technical solution of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the pitch turbine structure provided in an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of a variable impeller structure; Figure 3 yes Figure 2 A schematic diagram of the impeller frame structure; Figure 4 yes Figure 2 A schematic diagram of the blade structure; Figure 5 yes Figure 2 A schematic diagram of the central rotating shaft structure; Figure 6 yes Figure 2 A schematic diagram of the assembly structure of a thermosensitive hydrogel stretchable component; Figure 7 This is a comparison diagram of the stretching and contraction changes of the thermosensitive hydrogel stretching component provided in the embodiments of the present invention; Figure 8 This is a cross-sectional view of the thermosensitive hydrogel stretchable component provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the air-cooled heat dissipation device provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the cooling tower water cooling system provided in an embodiment of the present invention.

[0019] The attached figures are labeled as follows: 100. Fan; 200. Variable impeller; 210. Central rotating shaft; 211. Groove structure; 220. Fixed ring; 221. Mounting hole on ring; 230. Guide ring; 240. Guide push rod; 250. Impeller frame; 251. Top plate; 252. Bottom plate; 253. Support rod; 254. Drive shaft; 255. Positioning mounting hole; 260. Blade; 261. Mounting hole on blade; 270. Connecting rod; 300. Temperature-sensitive hydrogel stretching component; 310. Protective layer; 400, speed increaser; 510. First coupling; 520. Second coupling; 610. Pipe casing; 620. Assembly cavity casing; 710. System casing; 711. Circulating water tank; 720. Circulation mechanism; 721. Circulating pump; 722. Valve; 723. First water pressure gauge; 724. Heat exchanger; 725. Second water pressure gauge; 730. Spraying mechanism. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0021] This invention provides a pitch turbine, the implementation of which is as follows: Figure 1 As shown, it includes a fan 100, a variable impeller 200, and a temperature-sensitive hydrogel telescopic assembly 300.

[0022] Regarding the aforementioned fan 100, as Figure 1 As shown, in this embodiment, the fan 100 is connected to the variable impeller 200 for transmission. The fan 100 is used to rotate under the drive of the variable impeller 200 so that the fan 100 can obtain driving force from the variable impeller 200 to rotate, thereby meeting the need for heat dissipation using the fan 100.

[0023] Among them, to improve the heat dissipation efficiency of fan 100, such as Figure 1 As shown, in this embodiment, a speed increaser 400 is connected between the fan 100 and the variable impeller 200. The power input of the speed increaser 400 is connected to the power output of the variable impeller 200, and the power output of the speed increaser 400 is connected to the power input of the fan 100.

[0024] After setting the speed increaser 400, the speed increaser 400 can change the low-speed rotation of the variable impeller 200 to high-speed rotation, thereby ensuring that the fan 100 can rotate at high speed to meet the heat dissipation requirements under various operating conditions.

[0025] It should be noted that, in order to achieve the transmission connection between the fan 100 and the speed increaser 400, and between the variable impeller 200 and the speed increaser 400, such as Figure 1 As shown, this embodiment utilizes a first coupling 510 to connect the power input of the fan 100 and the power output of the speed increaser 400, and a second coupling 520 to connect the power output of the variable impeller 200 and the power input of the speed increaser 400, thereby realizing the mutual transmission connection between the three.

[0026] Regarding the aforementioned variable impeller 200, as Figure 1 As shown, in this embodiment, the pitch power acquisition point of the variable impeller 200 is connected to the thermosensitive hydrogel expansion assembly 300 for transmission, so as to realize the automatic pitch of the variable impeller 200 by utilizing the characteristic of thermosensitive hydrogel to automatically expand and contract according to the ambient temperature.

[0027] Specifically, when the operating ambient temperature of the temperature-sensitive hydrogel expansion component 300 is higher than the preset value, the expansion and contraction of the temperature-sensitive hydrogel expansion component 300 is used to drive the variable impeller 200 to change the pitch to an increased frontal surface; while when the operating ambient temperature of the temperature-sensitive hydrogel expansion component 300 is lower than the preset value, the expansion and contraction of the temperature-sensitive hydrogel expansion component 300 is used to drive the variable impeller 200 to change the pitch to a reduced frontal surface.

[0028] Therefore, by adopting this configuration, the high-energy-consuming device, the motor, is eliminated, and the variable impeller 200 directly drives the fan 100 for ventilation and cooling, thus achieving energy saving. This invention adjusts the blade opening angle 260° of the variable impeller 200 according to the cooling water temperature in different seasons. When the water temperature is low and cooling by the fan 100 is not required, the speed of the variable impeller 200 can be reduced or stopped, reducing wear on the transmission system and lowering maintenance costs.

[0029] Among these, to achieve the rotation of the variable propeller impeller 200 and the acquisition of pitch power, such as Figure 1 and Figure 2 As shown, in this embodiment, the central rotating shaft 210 of the variable impeller 200 is a self-rotating structure. The outer peripheral wall of the central rotating shaft 210 is provided with a pitch power acquisition point for the variable impeller 200. The rotation of the central rotating shaft 210 is used to control the variable impeller 200 to change pitch. The temperature-sensitive hydrogel telescopic component 300 is a tubular spring structure. The temperature-sensitive hydrogel telescopic component 300 is sleeved on the outside of the central rotating shaft 210. The extension and retraction of the temperature-sensitive hydrogel telescopic component 300 is used to drive the central rotating shaft 210 to rotate.

[0030] With this configuration, the rest of the variable impeller 200 can rotate around the central rotating shaft 210 as its center of rotation, thus rotating under the drive of the water flow. After the temperature-sensitive hydrogel expansion assembly 300 is fitted around the central rotating shaft 210, the installation and positioning of the temperature-sensitive hydrogel expansion assembly 300 can be achieved, ensuring that the deformation of the temperature-sensitive hydrogel expansion assembly 300 can provide driving force to the central rotating shaft 210 in a timely manner, so as to control the pitch change of the variable impeller 200.

[0031] In addition, to achieve the rotational drive of the temperature-sensitive hydrogel stretching component 300 to the central rotating shaft 210, this embodiment employs the following... Figure 1 , Figure 2 ,as well as Figures 5 to 7 In the embodiment shown, the variable propeller impeller 200 obtains its pitch power from a groove structure 211, which is arranged obliquely relative to the axial direction of the central rotating shaft 210. The central rotating shaft 210 is provided with a fixing ring 220, which is arranged around the periphery of the central rotating shaft 210. A temperature-sensitive hydrogel telescopic component 300 is provided on the fixing ring 220, and a guide ring 230 is provided at the end of the temperature-sensitive hydrogel telescopic component 300 away from the fixing ring 220. A guide push rod 240 is provided on the guide ring 230, and the guide push rod 240 is slidably installed in the groove structure 211.

[0032] With this configuration, once the thermosensitive hydrogel telescopic component 300 undergoes telescopic deformation, it will drive the guide push rod 240 to move axially along the central rotating shaft 210. At this time, since the guide push rod 240 and the groove structure 211 form a mutual limiting fit, the central rotating shaft 210 will be driven to rotate, thus making it possible for the central rotating shaft 210 to drive the variable impeller 200 to change pitch.

[0033] It should be noted that in this embodiment, two groove structures 211 are provided. The two groove structures 211 are respectively provided on opposite sides of the central rotating shaft 210 in opposite directions of inclination. The end of the guide push rod 240 embedded in the groove structure 211 is set as a hemispherical shape. The part of the groove structure 211 that contacts the end of the guide push rod 240 is also set as a matching arc structure, so that the limiting fit between the guide push rod 240 and the groove structure 211 is better and the guidance is smoother and more stable.

[0034] Furthermore, to achieve pitch drive of the central rotating shaft 210 to the variable impeller 200, such as... Figure 1 and Figure 2As shown, in this embodiment, the variable impeller 200 includes an impeller frame 250, blades 260, and connecting rods 270. A central rotating shaft 210 is installed at the rotation center of the impeller frame 250, and the impeller frame 250 and the central rotating shaft 210 are rotatable relative to each other. Multiple blades 260 are arranged around the periphery of the impeller frame 250, and all blades 260 are rotatably mounted on the impeller frame 250. Multiple connecting rods 270 are respectively connected to the multiple blades 260 and the central rotating shaft 210.

[0035] Specifically, such as Figure 2 and Figure 3 As shown, the impeller frame 250 at this time includes a top plate 251 and a bottom plate 252 that are separated from each other, and a support rod 253 connecting the top plate 251 and the bottom plate 252, so that there is sufficient space between the top plate 251 and the bottom plate 252 to install the central rotating shaft 210 and the blades 260. For example, the central rotating shaft 210 passes through the center of the top plate 251 and the bottom plate 252 in a rotatable manner, thereby realizing the rotatable positioning and installation of the central rotating shaft 210.

[0036] It should be noted that at this time, the top of the top plate 251 is provided with a drive shaft 254, which is used to connect with the fan 100 so that the fan 100 can be driven to rotate together when the impeller frame 250 rotates.

[0037] Moreover, both the top plate 251 and the bottom plate 252 are provided with multiple positioning and mounting holes 255, so that the blade 260 can be inserted into the two opposite positioning and mounting holes 255 by means of its shaft structure, thereby realizing the rotational installation of the blade 260.

[0038] With this configuration, once the central rotating shaft 210 rotates, it will drive multiple connecting rods 270 to rotate together. The rotation of the multiple connecting rods 270 will drive multiple blades 260 to expand outward or contract inward, thereby realizing the variable diameter operation of the variable impeller 200.

[0039] Furthermore, such as Figure 2 , Figure 4 and Figure 5 As shown, in this embodiment, the central rotating shaft 210 is provided with a fixing ring 220, which is arranged around the periphery of the central rotating shaft 210. The fixing ring 220 is provided with a plurality of ring mounting holes 221, which are arranged separately around the periphery of the central rotating shaft 210. Each of the multiple blades 260 is provided with a blade mounting hole 261. One end of each of the multiple connecting rods 270 is rotatably connected to the plurality of ring mounting holes 221, and the other end of each of the multiple connecting rods 270 is rotatably connected to the plurality of blade mounting holes 261.

[0040] With this configuration, the mounting holes 221 on the ring and 261 on the blade can be used to provide rotatable mounting points for the connecting rod 270, thereby ensuring that both ends of the connecting rod 270 can be rotatably and reliably mounted.

[0041] Regarding the aforementioned temperature-sensitive hydrogel stretchable component 300, as... Figure 8 As shown, in this embodiment, the outer surface of the temperature-sensitive hydrogel stretchable component 300 is covered with a protective layer 310.

[0042] Specifically, the protective layer 310 is made of a copolymer hydrogel of acrylamide and acrylic acid (P(AAm-co-AAc)), a non-thermosensitive material, while the thermosensitive hydrogel expansion component 300 is made of thermosensitive hydrogel (PNIPAM). During fabrication, the thermosensitive hydrogel expansion component 300 is first prepared, and the protective layer 310 is immediately poured onto it before it solidifies. This allows the molecular chains of the two components to interpenetrate and entangle at the interface, forming a strong chemical bond and preventing delamination during operation. The formed double-layered gel is then immersed in a solution such as FeCl3. 3+ The molecules diffuse into the molecular network structure of the protective layer 310 and combine with carboxyl groups, thereby enhancing the final mechanical properties of the material. This gives the material sufficient strength and toughness to withstand the impact of water flow and complete its driving tasks.

[0043] When the ambient temperature rises above the minimum critical phase transition temperature (e.g., 32°C) of the thermosensitive hydrogel stretching component 300, the hydrophobicity of the component increases, the network dehydrates, and a volumetric phase transition occurs, resulting in longitudinal shrinkage. Meanwhile, the protective layer 310, lacking thermosensitive units, retains almost its entire volume. This significant strain difference—one layer exhibiting a shrinkage tendency while the other does not—creates a severe internal stress mismatch at the interface between the two layers.

[0044] To release stress, the entire structure can only bend towards the side with more intense contraction (i.e., the side of the thermosensitive hydrogel stretchable component 300), causing the thermosensitive hydrogel stretchable component 300 to contract downwards. After the temperature decreases, the thermosensitive hydrogel stretchable component 300 reabsorbs water and swells, the internal stress reverses, and the thermosensitive hydrogel stretchable component 300 returns to its original state, opening upwards. Furthermore, if it is necessary to change the critical phase transition temperature to meet the requirements of different cooling environments, a certain proportion of acrylic acid (AAc) can be added to the thermosensitive hydrogel stretchable component 300 to form a copolymer. The critical phase transition temperature can be changed by adjusting the ratio of the two.

[0045] The present invention also provides an air-cooled heat dissipation device, the implementation of which is as follows: Figure 9As shown, the device includes a pipe housing 610, an assembly cavity housing 620, and the aforementioned variable pitch turbine. The assembly cavity housing 620 is located outside the pipe housing 610, and a variable pitch impeller 200 is located inside the pipe housing 610. The power output of the variable pitch impeller 200 extends into the interior of the assembly cavity housing 620. A fan 100 is located outside the assembly cavity housing 620, and the power input of the fan 100 extends into the interior of the assembly cavity housing 620 and is connected to the power output of the variable pitch impeller 200.

[0046] With this configuration, the pipe housing 610 and the assembly cavity housing 620 can be used to provide installation space for the pitch turbine, and the variable blade impeller 200 and the fan 100 can be installed in isolation. Through this pre-designed housing structure, the need for pipe modification for installing the pitch turbine is reduced.

[0047] The present invention also provides a cooling tower water cooling system, the implementation of which is as follows: Figure 10 As shown, the system includes a system housing 710, a circulation mechanism 720, and the aforementioned pitch turbine. A circulating water tank 711 is located at the lower interior of the system housing 710, and a pitch turbine and a spray mechanism 730 are located at the upper interior of the system housing 710. The pitch turbine is connected between the spray mechanism 730 and the circulation mechanism 720, and a fan 100 is directed at the air outlet of the system housing 710. The circulation mechanism 720 is used to pump water from the circulating water tank 711 to the pitch turbine.

[0048] With this configuration, the circulation mechanism 720 continuously pumps water from the circulating water tank 711 to the pitch turbine to provide driving force for the pitch turbine, enabling the fan 100 to work continuously to cool the system. Moreover, the water flowing through the pitch turbine will eventually be sprayed out by the spray mechanism 730 and finally flow back to the circulating water tank 711, thus realizing the recycling of water resources.

[0049] Among them, such as Figure 10 As shown, this embodiment also includes a circulation mechanism 720 comprising a circulation pump 721, a heat exchanger 724, a detection instrument, and a valve 722 connected in the same pipeline, and the heat exchanger 724 is connected between the circulation pump 721 and the pitch turbine.

[0050] Specifically, in this embodiment, a circulation pump 721, a valve 722, a first water pressure gauge 723, a heat exchanger 724, and a second water pressure gauge 725 are sequentially arranged along the conveying path of the circulation mechanism 720.

[0051] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A pitch turbine, characterized in that, Includes a fan, a variable impeller, and a temperature-sensitive hydrogel telescopic assembly; The fan is connected to the variable impeller via a transmission, and the fan is used to rotate under the drive of the variable impeller; The variable propeller impeller's pitch power acquisition point is connected to the temperature-sensitive hydrogel telescopic component via a transmission connection. When the operating ambient temperature of the temperature-sensitive hydrogel expansion component is higher than a preset value, the expansion and contraction of the temperature-sensitive hydrogel expansion component is used to drive the variable impeller to change to a state of increasing the frontal surface. When the operating ambient temperature of the temperature-sensitive hydrogel expansion component is lower than a preset value, the expansion and contraction of the temperature-sensitive hydrogel expansion component is used to drive the variable impeller to change to a state of reduced frontal surface.

2. The pitch turbine according to claim 1, characterized in that, A speed increaser is connected between the fan and the variable impeller. The power input of the speed increaser is connected to the power output of the variable impeller, and the power output of the speed increaser is connected to the power input of the fan.

3. The pitch turbine according to claim 1, characterized in that, The central rotating shaft of the variable impeller is a self-rotating structure. The outer peripheral wall of the central rotating shaft is provided with a pitch power acquisition point for the variable impeller. The rotation of the central rotating shaft is used to control the variable impeller to change pitch. The temperature-sensitive hydrogel telescopic component is a tubular spring structure. The temperature-sensitive hydrogel telescopic component is sleeved outside the central rotating shaft. The extension and retraction of the temperature-sensitive hydrogel telescopic component is used to drive the central rotating shaft to rotate.

4. The pitch turbine according to claim 3, characterized in that, The variable propeller impeller has a groove structure at the pitch power acquisition point, and the groove structure is arranged obliquely relative to the axial direction of the central rotation shaft. The central rotating shaft is provided with a fixing ring, which is arranged around the periphery of the central rotating shaft. The temperature-sensitive hydrogel telescopic component is provided on the fixing ring. The end of the temperature-sensitive hydrogel telescopic component opposite to the fixing ring is provided with a guide ring. The guide ring is provided with a guide push rod, which is slidably installed in the groove structure.

5. The pitch turbine according to claim 3, characterized in that, The variable impeller includes an impeller frame, blades, and a connecting rod; The central rotating shaft is installed at the rotation center of the impeller frame, and the impeller frame and the central rotating shaft are rotatable relative to each other. Multiple blades are arranged around the periphery of the impeller frame, and all of the blades are rotatably mounted on the impeller frame; The multiple connecting rods are respectively connected to the multiple blades and the central rotating shaft.

6. The pitch turbine according to claim 5, characterized in that, The central rotating shaft is provided with a fixing ring, which is arranged around the periphery of the central rotating shaft. The fixing ring is provided with a plurality of mounting holes, which are arranged separately around the periphery of the central rotating shaft. Each of the blades is provided with an on-blade mounting hole; One end of each of the multiple connecting rods is rotatably connected to a mounting hole on a plurality of rings, and the other end of each of the multiple connecting rods is rotatably connected to a mounting hole on a plurality of blades.

7. The pitch turbine according to claim 1, characterized in that, The outer surface of the thermosensitive hydrogel stretchable component is covered with a protective layer.

8. A wind-cooled heat dissipation device, characterized in that, Includes a pipe casing, an assembly cavity casing, and a pitch turbine as described in any one of claims 1 to 7; The assembly cavity shell is provided outside the pipe shell, and the variable impeller is provided inside the pipe shell. The power output of the variable impeller extends into the interior of the assembly cavity shell. The fan is located on the outside of the assembly cavity housing, and the power input of the fan extends into the interior of the assembly cavity housing and is connected to the power output of the variable impeller.

9. A cooling tower water cooling system, characterized in that, Includes a system housing, a circulation mechanism, and a pitch turbine as described in any one of claims 1 to 7; The lower interior of the system housing is equipped with a circulating water tank, and the upper interior of the system housing is equipped with a pitch turbine and a spray mechanism. The pitch turbine is connected between the spray mechanism and the circulating mechanism, and the fan is directed at the air outlet of the system housing. The circulation mechanism is used to pump water from the circulating water tank to the pitch turbine.

10. The cooling tower water cooling system according to claim 9, characterized in that, The circulation mechanism includes a circulation pump, a heat exchanger, detection instruments, and valves connected in the same pipeline, and the heat exchanger is connected between the circulation pump and the pitch turbine.

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