Cooling tower energy recovery system and recovery method

Abstract

The present invention discloses a cooling tower energy recovery system and recovery method. The cooling tower energy recovery system includes a tower body, a cooling tower nozzle, a water collection coil, and a power generation component. The interior of the tower body is a water sprinkling area. The cold zone tower nozzle is located within the cooling tower body and is connected to the cooling tower water inlet pipe. The water collection coil is arranged in the water sprinkling area and is located below the cooling tower nozzle to receive water discharged from the cold zone tower nozzle. The height of the water collection coil is adjustable. The power generation component is connected to the water collection coil, and the power generation utilizes the height difference of the water stored in the water collection coil to generate electricity. The cooling tower energy recovery system of the present invention can enhance the antifreeze capability of the cooling tower in winter.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling towers, and in particular to a cooling tower energy recovery system and a recovery method. Background Art

[0002] The function of a cooling tower is to use water as a circulating coolant. After absorbing heat from a system, it then comes into contact with the air flow to exchange heat and remove the heat in the water, so that the cooling water can be recycled and continuously remove the heat in the system.

[0003] The circulating cooling water system's supply and return pipes are both pressure pipes. The return water is delivered through these pipes to the cooling tower's high-level sprinklers, where it is sprayed and cooled before being collected in the bottom pool. The height difference between the sprinklers and the bottom pool can lead to energy waste and poor heat utilization during cooling tower operation, especially in winter.

[0004] Furthermore, when the cooling tower is operating in winter, ice can form at the tower's air inlet when temperatures are low. Related technologies prevent freezing by installing blades within the cooling tower and adjusting their angles. However, due to frequent changes in wind direction, the blade angles need to be adjusted frequently, which can reduce the blade's service life and require frequent blade replacement. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, an embodiment of the present invention provides a cooling tower energy recovery system that can enhance the antifreeze capability of the cooling tower in winter.

[0006] An embodiment of the present invention further provides a cooling tower energy recovery method.

[0007] The cooling tower energy recovery system according to an embodiment of the present invention primarily comprises a water collection coil, a power generation component, and a control component. The water collection coil is located within the cooling tower's water spraying zone and below the cooling tower's nozzles. The height of the water collection coil is adjustable, and the power generation component is connected to the water collection coil. The power generation component utilizes the height difference of the water stored within the water collection coil to generate electricity.

[0008] The cooling tower energy recovery system according to the embodiment of the present invention can enhance the antifreeze capability of the cooling tower in winter.

[0009] In some embodiments, the cooling tower energy recovery system further includes a lifting component connected to the water collection pan to adjust the height of the water collection pan.

[0010] In some embodiments, the water collecting coil further includes a water collecting pipe, the water collecting pipe is connected to the water collecting tray, and an inlet of the water collecting pipe is communicated with the water collecting tray, and the water collecting pipe is retractable in the up and down directions.

[0011] In some embodiments, the water collecting pipe includes a first water collecting cylinder and multiple sections of second water collecting cylinders nested in sequence. The first water collecting cylinder is inserted into the topmost second water collecting cylinder among the multiple sections of the second water collecting cylinders, and the first water collecting cylinder is retractable in the second water collecting cylinder. The first water collecting cylinder is connected to the water collecting tray, and the water collecting tray can be retracted into and extended from the first water collecting cylinder.

[0012] In some embodiments, the water collection tray includes a lifting ring, multiple support frames, multiple connecting rings and a flexible water collection plate. The multiple connecting rings are respectively mounted on the lifting ring, and the multiple connecting rings are movable in the circumferential direction of the lifting ring. The multiple support frames are connected to the multiple connecting rings one by one. The flexible water collection plate is respectively connected to the multiple support frames. The lifting ring is arranged in the water collection barrel, and the lifting ring can move up and down in the water collection barrel.

[0013] In some embodiments, the first water collecting cylinder includes a cylinder body, a plurality of support seats and a limit block, the plurality of cylinder bodies are respectively connected to the cylinder body, and the plurality of cylinder bodies are spaced apart in the circumferential direction of the cylinder body, the limit block is arranged in the cylinder body and adjacent to the opening of the cylinder body, the flexible water collecting plate has an unfolded state and a folded state, in the unfolded state, the support frame is in contact with the support seat, and the lifting ring is in contact with the limit block.

[0014] In some embodiments, the cooling tower energy recovery system also includes a manifold, which is connected to the power generation component. There are multiple water collecting coils, and the multiple water collecting coils are arranged at intervals in the cooling tower water sprinkling area, and the water collecting coils are respectively connected to the manifold.

[0015] In some embodiments, the cooling tower energy recovery system also includes a temperature monitoring component and a controller, the temperature monitoring component and the lifting component are respectively connected to the controller, the temperature monitoring component is used to monitor the water temperature, and the controller controls the lifting component to adjust the height of the water collection tray according to the water temperature.

[0016] The cooling tower energy recovery method of the embodiment of the present invention includes the following steps: adjusting the water collecting tray to an unfolded state or a folded state and / or the unfolded number of water collecting trays according to the meteorological data, cooling water volume and cooling water temperature of the cooling tower environment.

[0017] In some embodiments, if the water collection tray is in the unfolded state, the method further includes adjusting the height of the water collection tray according to water temperature data monitored by a temperature monitoring component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of the cooling tower energy recovery system according to an embodiment of the present invention.

[0019] Figure 2 It is a structural schematic diagram of a cooling tower energy recovery system according to an embodiment of the present invention, with the water collection tray in an expanded state.

[0020] Figure 3 It is a structural schematic diagram of a cooling tower energy recovery system according to an embodiment of the present invention, with the water collecting tray in a folded state.

[0021] Figure 4 It is a structural schematic diagram of a water collecting tray according to an embodiment of the present invention.

[0022] Figure 5 It is a structural schematic diagram of the first water collecting cylinder of an embodiment of the present invention.

[0023] Figure 6 It is a schematic diagram of the cooperation between the water collecting tray and the first water collecting cylinder according to an embodiment of the present invention.

[0024] Figure 7 It is a schematic diagram of the connection between the first water collecting cylinder and the second water collecting cylinder in an embodiment of the present invention.

[0025] Figure 8 Schematic diagram of the connection between two adjacent second water collecting tubes according to an embodiment of the present invention.

[0026] Reference numerals:

[0027] Tower body 1, cooling tower water spraying area 101,

[0028] Cooling tower top plate 2, cooling tower nozzle 3,

[0029] Water collecting tray 4, lifting ring 41, support frame 42, connecting ring 43, flexible water collecting plate 44,

[0030] Water collecting pipe 5, first water collecting cylinder 51, cylinder body 511, support seat 512, limit block 513, second water collecting cylinder 52,

[0031] Power generation component 6,

[0032] Lifting component 7, lifting motor 71, traction rope 72,

[0033] Manifold 8, controller 9, sealing ring 10, circulation pump 11. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0035] like Figures 1 to 8 As shown, the cooling tower energy recovery system of an embodiment of the present invention includes a tower body 1, a nozzle 3 and a power generation component 6. The tower body 1 has a cooling tower water sprinkling area 101 inside. The water collecting coil is arranged in the cooling tower water sprinkling area 101, and the water collecting coil is located below the cooling tower nozzle 3. The water collecting coil includes a water collecting pan 4, which is used to receive water discharged from the cooling tower nozzle 3, and the height of the water collecting pan 4 is adjustable. The power generation component 6 is connected to the water collecting coil, and the power generation component 6 uses the water discharged from the water collecting coil to generate electricity.

[0036] Specifically, if Figure 1 As shown, the cooling tower further comprises a cooling tower top plate 2. The cooling tower top plate 2 and the tower body 1 define a cooling tower water spraying area 101. The cooling tower nozzles 3 spray downward. A water collection tray 4 is located below the nozzles 3. The water collection tray 4 is movable vertically to adjust the distance between the water collection tray 4 and the nozzles 3. The lower end of the water collection tray 4 is connected to a power generation component 6 via a pipeline. The power generation component 6 generates electricity using the water collected by the water collector. For example, the power generation component 6 may be a hydro-generator.

[0037] like Figure 1 As shown, the height of the cooling tower nozzle 3 is higher than the height of the power generation component 6.

[0038] In the cooling tower energy recovery system of the embodiment of the present invention, circulating water enters the cooling tower nozzle 3 at a high position through the water inlet pipe and is sprayed downward. The sprayed circulating water is collected by the water collecting tray 4 and enters the power generation component 6 through the manifold 8. The power generation component 6 uses the height difference of the circulating water to generate electricity, thereby recovering energy. By adjusting the height of the water collecting tray 4, the distance between the water collecting tray 4 and the cooling tower nozzle 3 is adjusted, thereby adjusting the falling distance of the circulating water, and then controlling the cooling temperature of the circulating water. The water collecting tray 4 is arranged in the cooling tower water sprinkling area 101, and can also reduce the ventilation volume of the cold air in the tower body 1, thereby enhancing the anti-freezing ability of the cooling tower in winter.

[0039] In some embodiments, the cooling tower energy recovery system further includes a lifting component 7 , which is connected to the water collecting pan 4 to adjust the height of the water collecting pan 4 .

[0040] Specifically, if Figure 2As shown, the lifting component 7 includes a lifting motor 71 and a traction rope 72. The lifting motor 71 is installed on the top plate 2 of the cooling tower. One end of the traction rope 72 is connected to the lifting motor 71, and the other end of the traction rope 72 is connected to the water collecting tray 4. The rotation of the lifting motor 71 drives the traction rope 72 to contract or expand, thereby adjusting the height of the water collecting tray 4. By setting the lifting component 7, the degree of automation of the height adjustment of the water collecting tray 4 can be improved. The lifting motor 71 is arranged on the top plate 2 of the cooling tower and outside the water sprinkling area 101 to avoid damage to the lifting motor 71 caused by the humid environment in the water sprinkling area 101, and at the same time facilitates operation and maintenance.

[0041] In some embodiments, the water collecting coil further includes a water collecting pipe 5, which is connected to the water collecting tray 4, and an inlet of the water collecting pipe 5 is communicated with the water collecting tray 4, and the water collecting pipe 5 is retractable in the up and down directions.

[0042] Specifically, if Figure 2 and Figure 3 As shown, water collecting pipe 5 extends vertically in the vertical direction. The inlet of water collecting pipe 5 is connected to the bottom of water collecting pan 4, and the outlet of water collecting pipe 5 is connected to power generation component 6. Water collecting pipe 5 can be expanded or contracted in the vertical direction. By providing water collecting pipe 5, the collection effect of circulating water in water collecting pan 4 is improved and leakage of circulating water is reduced. It also supports water collecting pan 4 and prevents it from falling.

[0043] In some embodiments, the water collecting pipe 5 includes a first water collecting cylinder 51 and multiple sections of second water collecting cylinders 52 nested in sequence. The first water collecting cylinder 51 is inserted into the topmost second water collecting cylinder 52 among the multiple sections of second water collecting cylinders 52, and the first water collecting cylinder 51 is retractable in the second water collecting cylinder 52. The first water collecting cylinder 51 is connected to the water collecting tray 4, and the water collecting tray 4 can be retracted into and extended from the first water collecting cylinder 51.

[0044] Specifically, if Figure 2 and Figure 7 As shown, the lower end of the first water collection tube 51 is inserted into the uppermost second water collection tube 52, and the upper end of the first water collection tube 51 is connected to the water collection tray 4, and the water collection tray 4 can extend into or out of the first water collection tube 51. For example, the water collection tray 4 has an expanded state and a folded state. When the water collection tray 4 is in the folded state, the water collection tray 4 extends into the first water collection tube 51, and when the water collection tray 4 is in the expanded state, the water collection tray 4 extends out of the first water collection tube 51.

[0045] The water collecting pan 4 can be extended into and out of the first water collecting cylinder 51. When it is winter or cold season, the water collecting pan 4 extends out of the first water collecting cylinder 51, thereby reducing the ventilation volume of cold air in the sprinkling area 101, thereby enhancing the antifreeze ability of the cooling tower.

[0046] In some embodiments, the water collection tray 4 includes a lifting ring 41, multiple support frames 42, multiple connecting rings 43 and a flexible water collection plate 44. The multiple connecting rings 43 are respectively mounted on the lifting ring 41, and the multiple connecting rings 43 are movable in the circumferential direction of the lifting ring 41. The multiple support frames 42 are connected to the multiple connecting rings 43 one by one. The flexible water collection plate 44 is respectively connected to the multiple support frames 42. The lifting ring 41 is arranged in the water collection tube, and the lifting ring 41 can move up and down in the water collection tube.

[0047] Specifically, if Figure 4 As shown, the lifting ring 41 is connected to the lower end of the traction rope 72, and the lifting ring 41 is arranged in the first water collecting cylinder 51. The lifting ring 41 can move up and down in the first water collecting cylinder 51. A plurality of connecting rings 43 are respectively mounted on the lifting ring 41, and the plurality of connecting rings 43 are movable in the circumferential direction of the lifting ring 41. A plurality of supporting frames 42 are connected to the plurality of connecting rings 43 in a one-to-one correspondence, and the flexible water collecting plates 44 are respectively connected to the plurality of supporting frames 42. For example, the flexible water collecting plates 44 are flexible water collecting cloths made of waterproof and soft fabrics, thereby reducing the weight of the flexible water collecting plates 44, increasing the tensile strength of the flexible water collecting plates 44, and facilitating folding, thereby improving the anti-aging performance of the flexible water collecting plates 44 under alternating wet and dry environments.

[0048] It should be noted that by setting up a flexible water collecting plate 44, the length of the flexible water collecting plate 44 extending out of the first water collecting tube 51 can be adjusted according to the ambient temperature of the tower body 1 and the circulating water cooling demand, thereby adjusting the deployment area of ​​the flexible water collecting plate 44, and then adjusting the ventilation volume of the cold air in the water sprinkling area 101, which is suitable for circulating water cooling at different temperatures and improves the cooling effect of the cooling tower. By setting up multiple support frames 42, the structural strength of the water collecting plate can be improved to prevent the circulating water from crushing the water collecting tray 4. By setting up a lifting ring 41, the flexible water collecting plate 44 can be folded by relying on the dead weight of the lifting ring 41. By connecting the ring 43, the deployment flexibility of the flexible water collecting plate 44 can be improved.

[0049] In some embodiments, the first water collecting cylinder 51 includes a cylinder body 511, multiple support seats 512 and a limit block 513. The multiple support seats 512 are respectively connected to the cylinder body 511, and the multiple support seats 512 are arranged at intervals in the circumferential direction of the cylinder body 511. The limit block 513 is arranged in the cylinder body 511 and adjacent to the opening of the cylinder body 511. The flexible water collecting plate 44 has an unfolded state and a folded state. In the unfolded state, the support frame 42 is in contact with the support seat 512, and the lifting ring 41 is in contact with the limit block 513.

[0050] Specifically, if Figure 6As shown, the interior of the first water collecting cylinder 51 is hollow, and multiple support seats 512 are provided at the upper end of the first water collecting cylinder 51. The multiple support seats 512 are evenly spaced along the circumference of the first water collecting cylinder 51, and the multiple support seats 512 correspond one-to-one to the multiple support frames 42. The support seats 512 are provided with installation grooves. When the flexible water collecting plate 44 is unfolded, the support frame 42 is embedded in the installation groove. By setting the support seats 512, the support strength of the water collecting tray 4 can be improved to prevent the circulating water from crushing the water collecting tray 4. There are multiple limit blocks 513, and the multiple limit blocks 513 are spaced apart in the circumferential direction of the cylinder 511. When the flexible water collecting plate 44 is unfolded, the upper end face of the lifting ring 41 contacts the limit block 513. By setting the limit block 513, the lifting ring 41 is prevented from separating from the cylinder 511, thereby ensuring the folding and unfolding of the flexible water collecting plate 44.

[0051] In one example, the support base 512 , the limiting block 513 and the cylinder body 511 are integrally formed, thereby improving the structural strength of the first water collecting cylinder 51 .

[0052] In some embodiments, a sealing ring 10 is provided between the first water collecting cylinder 51 and the second water collecting cylinder 52, and / or between two adjacent second water collecting cylinders 52. Figure 7 and Figure 8 As shown, a sealing ring 10 is provided at the connection between the first water collecting tube 51 and the second water collecting tube 52, or a sealing ring 10 is provided between two adjacent second water collecting tubes 52, or a sealing ring 10 is provided at the connection between the first water collecting tube 51 and the second water collecting tube 52 and a sealing ring 10 is provided between two adjacent second water collecting tubes 52.

[0053] By providing a sealing ring 10 at the connection between the first water collecting tube 51 and the second water collecting tube 52 and between two adjacent second water collecting tubes 52, the sealing performance of the water collecting pipe 5 can be improved, thereby preventing the circulating water flowing through the water collecting pipe 5 from leaking out.

[0054] In some embodiments, the cooling tower energy recovery system also includes a manifold 8, which is connected to the power generation component 6. There are multiple water collecting coils, and the multiple water collecting coils are arranged at intervals in the water sprinkling area 101, and the water collecting coils are respectively connected to the manifold 8.

[0055] Specifically, if Figure 2 and Figure 3 As shown, the second water collecting cylinder 52 located at the bottom among the multiple second water collecting cylinders 52 is connected to the manifold 8, and the outlet of the manifold 8 is connected to the power generation component 6. By setting the manifold 8, the circulating water collected by the multiple water collecting coils can be transported to the power generation component 6, thereby improving the energy recovery efficiency.

[0056] In some embodiments, the cooling tower energy recovery system also includes a temperature monitoring component (not shown) and a controller 9. The temperature monitoring component and the lifting component 7 are respectively connected to the controller 9. The temperature monitoring component is used to monitor the water temperature. The controller 9 controls the lifting component 7 to adjust the height of the water collection tray 4 according to the water temperature.

[0057] For example, a meteorological monitoring component is also provided on the outside of the tower body 1. By setting up the meteorological monitoring component, the meteorological conditions at the location of the tower body 1 can be monitored, and whether the water collection tray 4 needs to be unfolded can be judged according to the meteorological conditions, or the unfolding area of ​​the water collection tray 4 can be adjusted according to the meteorological conditions, thereby improving the anti-freeze performance of the tower body 1.

[0058] The cooling tower energy recovery method of an embodiment of the present invention includes the following steps: adjusting the water collecting tray 4 to be in an unfolded state or a folded state, and / or the unfolded number of water collecting trays 4 according to the meteorological data, cooling water volume and cooling water temperature of the cooling tower environment.

[0059] For example, the expanded or folded state of the water collecting tray 4 can be determined according to the meteorological environment at the location of the tower body 1 and the demand for cooling water, or the expanded number of the water collecting tray 4 can be determined according to the meteorological environment at the location of the tower body 1 and the demand for cooling water, or the expanded or folded state of the water collecting tray 4 can be determined according to the meteorological environment at the location of the tower body 1 and the demand for cooling water, and the expanded number of the water collecting tray 4 can be determined according to the meteorological environment at the location of the tower body 1 and the demand for cooling water, thereby improving the antifreeze performance and energy recovery efficiency of the tower body 1 under different meteorological conditions and different cooling water demands.

[0060] In some embodiments, if the water collecting tray 4 is in the unfolded state, the method further includes adjusting the height of the water collecting tray 4 according to water temperature data monitored by the temperature monitoring component.

[0061] For example, the height of the water collecting tray 4 can be adjusted according to the temperature of the cooling water. For example, if the temperature of the cooling water is higher than the preset value, the height of the water collecting tray 4 is lowered to increase the distance between the water collecting tray 4 and the nozzle 3, thereby increasing the falling distance of the cooling water and lowering the temperature of the cooling water. Conversely, when the temperature of the cooling water is lower than the preset value, the height of the water collecting tray 4 is raised to reduce the distance between the water collecting tray 4 and the nozzle 3, thereby reducing the falling distance of the cooling water and increasing the temperature of the cooling water.

[0062] In one example, the expanded area of ​​the water collecting tray 4 can also be adjusted according to the water temperature data monitored by the temperature monitoring component. For example, if the temperature of the cooling water is higher than the preset value, the height of the water collecting tray 4 is lowered to reduce the expanded area of ​​the water collecting tray 4, thereby increasing the circulation of cold air in the water sprinkling area 101 and reducing the temperature of the cooling water. Conversely, when the temperature of the cooling water is lower than the preset value, the height of the water collecting tray 4 is raised to increase the expanded area of ​​the water collecting tray 4 and reduce the circulation of cold air in the water sprinkling area 101 and thereby increasing the temperature of the cooling water.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0065] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0066] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0067] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0068] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A cooling tower energy recovery system, characterized in that: include: The tower body, wherein the interior of the tower body is a water sprinkling area; A cooling tower nozzle, the cooling tower nozzle is located inside the cooling tower body and is connected to the cooling tower water inlet pipe; A water collecting coil, the water collecting coil being arranged in the water spraying area and being located below the cooling tower nozzle, the water collecting coil comprising a water collecting pan, the water collecting pan being used to receive water discharged from the cooling tower nozzle, and the height of the water collecting pan being adjustable; A power generation component connected to the water collecting coil, the power generation component generates electrical energy by utilizing the height difference of water stored in the water collecting coil; The water collecting coil further comprises a water collecting pipe, the water collecting pipe is connected to the water collecting tray, and the inlet of the water collecting pipe is in communication with the water collecting tray, and the water collecting pipe is retractable in the up and down directions; The water collecting pipe includes a first water collecting cylinder and multiple sections of second water collecting cylinders nested in sequence, the first water collecting cylinder is arranged in the uppermost second water collecting cylinder among the multiple sections of the second water collecting cylinder, and the first water collecting cylinder is retractable in the second water collecting cylinder, the first water collecting cylinder is connected to the water collecting tray, and the water collecting tray can be retracted into and extended from the first water collecting cylinder; The water collecting tray includes a lifting ring, multiple support frames, multiple connecting rings and a flexible water collecting plate. The multiple connecting rings are respectively mounted on the lifting ring, and the multiple connecting rings are movable in the circumferential direction of the lifting ring. The multiple support frames are connected to the multiple connecting rings in a one-to-one correspondence. The flexible water collecting plate is respectively connected to the multiple support frames. The lifting ring is arranged in the water collecting barrel, and the lifting ring can move up and down in the water collecting barrel.

2. The cooling tower energy recovery system according to claim 1, characterized in that: It also includes a lifting component, which is connected to the water collecting tray to adjust the height of the water collecting tray.

3. The cooling tower energy recovery system according to claim 1, characterized in that: The first water collecting cylinder includes a cylinder body, a plurality of support seats and a limit block, wherein the plurality of support seats and limit blocks are respectively connected to the cylinder body, and the plurality of support seats and limit blocks are spaced apart in the circumferential direction of the cylinder body, and the limit block is arranged in the cylinder body and adjacent to the opening of the cylinder body. The flexible water collecting plate has an unfolded state and a folded state. In the unfolded state, the support frame is in contact with the support seat, and the lifting ring is in contact with the limit block.

4. The cooling tower energy recovery system according to any one of claims 1 to 3, characterized in that: It also includes a manifold, which is connected to the power generation component. There are multiple water collecting discs, which are arranged at intervals in the water sprinkling area, and the water collecting discs are respectively connected to the manifold.

5. The cooling tower energy recovery system according to claim 2, characterized in that: It also includes a temperature monitoring component and a controller. The temperature monitoring component and the lifting component are respectively connected to the controller. The temperature monitoring component is used to monitor the water temperature. The controller controls the lifting component to adjust the height of the water collecting tray according to the water temperature.

6. A cooling tower energy recovery method, utilizing the cooling tower energy recovery system according to any one of claims 1 to 5, characterized in that: The steps include: The water collecting tray is adjusted to be in an unfolded state or a folded state, and / or the unfolded number of the water collecting trays, according to the meteorological data, cooling water volume and cooling water temperature of the cooling tower environment.

7. The cooling tower energy recovery method according to claim 6, characterized in that: If the water collecting tray is in the unfolded state, the method further includes adjusting the height of the water collecting tray according to water temperature data monitored by the temperature monitoring component.

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