Cooling tower and control method thereof

Abstract

The present disclosure relates to a cooling tower and a control method thereof. The cooling tower comprises: a tower body (10) having a cooling water pipe (11) and a filler (12); a hydraulic mechanism (20) located in the tower body (10) and below the outlet of the cooling water pipe (11), configured to convert the potential energy of the cooling water discharged from the outlet of the cooling water pipe (11) into kinetic energy; and a rotating water distribution mechanism (30) located in the tower body (10) and below the outlet of the cooling water pipe (11). The rotating water distribution mechanism (30) is transmission-connected to the hydraulic mechanism (20) and configured to rotate under the drive of the hydraulic mechanism (20) to distribute the cooling water from the outlet of the cooling water pipe (11) to the filler (12).

Description

Technical Field

[0001] The present disclosure relates to a cooling tower and a control method thereof. Background Art

[0002] A cooling tower is a device that uses water as a circulating coolant to absorb heat from a system and discharge it into the atmosphere to lower the water temperature. It is widely used in air conditioning, food, petrochemical, machinery, materials and other industries.

[0003] In some cooling tower related technologies, the kinetic energy of the cooling water causes the turbine in the hydroelectric drive structure to rotate, thereby driving the fan to rotate, and the cooling water is sprayed onto the filler through the spray head on the spray pipe to achieve natural air cooling. Summary of the Invention

[0004] The inventors have found through research that the transmission efficiency achieved by the turbine in the related technology is relatively limited, which correspondingly increases the energy consumption of driving the cooling water. In addition, the sprinkler heads used to expand the water distribution area need to be replaced frequently, affecting the convenience of use.

[0005] In view of this, an embodiment of the present disclosure provides a cooling tower and a control method thereof, which are conducive to reducing energy consumption.

[0006] In one aspect of the present disclosure, there is provided a cooling tower comprising:

[0007] a tower body having cooling water pipes and fillers;

[0008] a hydraulic mechanism located in the tower body and below the outlet of the cooling water pipe, configured to convert the potential energy of the cooling water discharged from the outlet of the cooling water pipe into kinetic energy;

[0009] The rotating water distribution mechanism is located in the tower body and at the lower side of the outlet of the cooling water pipe. The rotating water distribution mechanism is transmission-connected to the hydraulic mechanism and is configured to rotate under the drive of the hydraulic mechanism to distribute the cooling water from the outlet of the cooling water pipe to the filler.

[0010] In some embodiments, the water-powered mechanism includes at least one water-powered wheel having a wheel body and a plurality of water-receiving buckets, wherein the plurality of water-receiving buckets are arranged on the outer periphery of the wheel body at intervals along the circumference of the wheel body.

[0011] In some embodiments, the water-powered mechanism includes a plurality of water-powered wheels and a transmission shaft fixedly connected to the plurality of water-powered wheels, and the transmission shaft is in transmission connection with the rotating water distribution mechanism.

[0012] In some embodiments, projections of the outlets of the cooling water pipes on a horizontal reference plane passing through the rotation axis of the water impeller are located on the same side of the rotation axis of the water impeller.

[0013] In some embodiments, the hydraulic mechanism includes a plurality of hydraulic wheels, the tower body has a plurality of cooling water pipes, the plurality of hydraulic wheels correspond to the plurality of cooling water pipes respectively, and each hydraulic wheel is located below the corresponding cooling water pipe.

[0014] In some embodiments, the wheel body has a plurality of counterweight grooves arranged at intervals along the circumference of the wheel body, and the water wheel also includes a plurality of counterweight balls, which are respectively arranged in the plurality of counterweight grooves. The counterweight grooves extend along the radial direction of the wheel body, and the counterweight balls can move in the counterweight grooves along the radial direction of the wheel body.

[0015] In some embodiments, the rotating water distribution mechanism includes at least one water receiving tray, which is rotatably supported in the tower body and has a water receiving surface adjacent to the outlet of the cooling water pipe, a water distribution surface adjacent to the filler, and a plurality of water distribution holes, wherein the plurality of water distribution holes connect the water receiving surface and the water distribution surface.

[0016] In some embodiments, the water distribution hole has a tapered opening adjacent to the water receiving surface.

[0017] In some embodiments, at least part of the plurality of water distribution holes extend obliquely relative to the rotation axis of the water receiving tray, and the holes located on the water receiving surface are closer to the rotation axis of the water receiving tray than the holes located on the water distribution surface.

[0018] In some embodiments, the inclination angles of the plurality of water distribution holes relative to the rotation axis of the water receiving tray gradually increase from the inside to the outside along the radial direction of the water receiving tray.

[0019] In some embodiments, the water receiving surface of the water receiving tray has a plurality of guide protrusions arranged at intervals along the circumference of the water receiving tray, and the guide protrusions extend along the radial direction of the water receiving tray.

[0020] In some embodiments, the outer peripheral contour of the water receiving tray has a plurality of spur teeth, and the plurality of spur teeth are transmission-connected to the water-powered mechanism via a transmission gear set.

[0021] In some embodiments, the tower body has an air inlet and an air outlet, the air inlet is opposite to the filler, and the cooling tower also includes an air cooling mechanism, which is located at the air outlet and is transmission-connected to the hydraulic mechanism. It is configured to rotate under the drive of the hydraulic mechanism to drive the air outside the tower body into the filler to achieve air cooling effect on the cooling water.

[0022] In some embodiments, the air inlet is arranged at a position on the side wall of the tower body lower than the rotating water distribution mechanism, and the air outlet is arranged at the top of the tower body or at a position on the side wall of the tower body higher than the rotating water distribution mechanism.

[0023] In some embodiments, the air cooling mechanism includes an impeller, and the impeller shaft of the impeller is transmission-connected to the water-powered mechanism via a transmission gear set.

[0024] In some embodiments, the hydraulic mechanism includes a transmission shaft and a plurality of hydraulic wheels fixedly connected to the transmission shaft, the rotary water distribution mechanism includes at least one water receiving tray, the outer peripheral contour of the water receiving tray has a plurality of straight teeth, and the transmission gear set includes:

[0025] a first bevel gear fixedly connected to the transmission shaft;

[0026] a second bevel gear meshing with the first bevel gear;

[0027] a first spur gear coaxially connected to the second bevel gear and meshing with a plurality of spur teeth on the outer periphery of the water receiving tray;

[0028] The second spur gear is fixedly connected to the impeller shaft and meshes with the first spur gear.

[0029] In some embodiments, the multiple water wheels include two groups of water wheels, and the two groups of water wheels are respectively located on both sides of the first bevel gear. The rotating water distribution mechanism includes two water receiving trays, which are respectively located on both sides of the first spur gear. The two water receiving trays, the first spur gear, and the second spur gear are located on the same plane.

[0030] In some embodiments, the hydraulic mechanism includes a transmission shaft and a hydraulic wheel fixedly connected to the transmission shaft, and the cooling tower also includes a speed change mechanism connected to the transmission shaft and configured to adjust the rotation speed of the transmission shaft.

[0031] In some embodiments, the speed change mechanism comprises:

[0032] a speed sensor configured to detect the rotational speed of the transmission shaft; and

[0033] A gearbox is drivingly connected to the transmission shaft, and the operating frequency of the gearbox can be adjusted according to the rotational speed of the transmission shaft.

[0034] In some embodiments, the speed change mechanism further comprises:

[0035] A processor is connected to the speed sensor and the gearbox signal,

[0036] Wherein, the processor is configured to:

[0037] In response to the rotational speed of the transmission shaft being less than a first rotational speed threshold, operating the transmission at full frequency;

[0038] In response to the rotational speed of the transmission shaft being greater than or equal to the first rotational speed threshold and less than or equal to a second rotational speed threshold, operating the transmission at a sub-full frequency;

[0039] In response to the rotational speed of the transmission shaft being greater than the second rotational speed threshold, the transmission is deactivated.

[0040] In one aspect of the present disclosure, a method for controlling a cooling tower is provided, comprising:

[0041] detecting the rotational speed of the transmission shaft by means of the speed sensor;

[0042] The operating frequency of the gearbox is adjusted according to the rotational speed of the transmission shaft.

[0043] In some embodiments, the step of adjusting the operating frequency of the gearbox according to the rotational speed of the transmission shaft includes:

[0044] In response to the rotational speed of the transmission shaft being less than a first rotational speed threshold, operating the transmission at full frequency;

[0045] In response to the rotational speed of the transmission shaft being greater than or equal to the first rotational speed threshold and less than or equal to a second rotational speed threshold, operating the transmission at a sub-full frequency;

[0046] In response to the rotational speed of the transmission shaft being greater than the second rotational speed threshold, the transmission is deactivated.

[0047] Therefore, according to the embodiment of the present disclosure, by arranging a hydraulic mechanism in the tower body and locating the hydraulic mechanism at the lower side of the outlet of the cooling water pipe, the driving effect on the hydraulic mechanism can be realized in the process of the cooling water falling due to its own gravity, and by arranging a rotating water distribution mechanism in the tower body and locating the rotating water distribution mechanism at the lower side of the outlet of the cooling water pipe, the water distribution range to the filler is expanded by the rotation of the rotating water distribution mechanism in the process of the cooling water falling due to its own gravity, thereby increasing the water distribution area; and through the transmission connection between the rotating water distribution mechanism and the hydraulic mechanism, the hydraulic mechanism also converts the gravitational potential energy of the cooling water into mechanical energy for driving the rotating water distribution mechanism to rotate, thereby reducing the energy consumption of the cooling tower and reducing the operating cost while satisfying the water distribution function of the cooling tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0049] The present disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0050] Figure 1 is a schematic structural diagram of a cooling tower according to some embodiments of the present disclosure;

[0051] Figure 2 and Figure 3 yes Figure 1 Schematic diagram of the structure of the embodiment shown in different viewing angles;

[0052] Figure 4 is a schematic structural diagram of a water wheel in a cooling tower according to some embodiments of the present disclosure;

[0053] Figure 5 is a schematic structural diagram of a water receiving surface of a water receiving tray in a cooling tower according to some embodiments of the present disclosure;

[0054] Figure 6 is a schematic structural diagram of a water distribution surface of a water receiving tray in a cooling tower according to some embodiments of the present disclosure;

[0055] Figure 7 is a schematic longitudinal cross-sectional view of a water receiving tray in a cooling tower according to some embodiments of the present disclosure;

[0056] Figure 8 is a cross-sectional schematic diagram of water distribution holes of a water receiving pan in a cooling tower according to some embodiments of the present disclosure;

[0057] Figure 9 is a schematic diagram of the control relationship of a cooling tower according to some embodiments of the present disclosure;

[0058] Figure 10 1 is a flow chart of a method for controlling a cooling tower according to some embodiments of the present disclosure.

[0059] It should be understood that the size of each part shown in the drawings is not drawn according to the actual proportional relationship.In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0060] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure, its application, or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions, and numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0061] The terms "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The terms "include" or "comprises" and similar terms mean that the elements before the term include the elements listed after the term, and do not exclude the possibility of also including other elements. The terms "upper", "lower", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0062] In the present disclosure, when a specific device is described as being located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When a specific device is described as being connected to another device, the specific device may be directly connected to the other device without an intervening device, or may be not directly connected to the other device but with an intervening device.

[0063] All terms (including technical or scientific terms) used in this disclosure have the same meaning as those understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined herein.

[0064] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0065] In some cooling tower technologies, the kinetic energy of cooling water passes through a turbine in a hydroelectric drive structure, causing it to rotate, driving the fan. The cooling water is then sprayed onto the packing via sprinkler heads on the spray pipes, achieving natural air cooling. The inventors discovered that the turbines in these technologies have limited transmission efficiency, which in turn increases the energy consumption required to drive the cooling water. Furthermore, the sprinkler heads required to expand the water distribution area require frequent replacement, compromising ease of use.

[0066] In view of this, an embodiment of the present disclosure provides a cooling tower and a control method thereof, which are conducive to reducing energy consumption.

[0067] Figure 1 is a schematic structural diagram of a cooling tower according to some embodiments of the present disclosure. Figure 2 and Figure 3 yes Figure 1 The schematic diagram of the structure of the embodiment shown in FIG. Figure 1-Figure 3The present disclosure provides a cooling tower. The cooling tower includes a tower body 10, a hydraulic mechanism 20, and a rotary water distribution mechanism 30. The tower body 10 has a cooling water pipe 11 and a filler 12.

[0068] The tower body 10 can be configured as a shell having an interior space. The cooling water pipe 11 can connect cooling water from the cooling water flow path outside the tower body 10 into the tower body 10 and discharge it through the outlet on the cooling water pipe 11. The cooling tower can include one cooling water pipe 11 or multiple cooling water pipes 11. The cooling water pipe 11 can be provided with one cooling water outlet or multiple cooling water outlets.

[0069] The primary function of a cooling tower is to reduce the temperature of cooling water through evaporation and conduction. Filler 12 increases the surface area within the cooling tower, improving contact between the cooling water and air, extending the cooling water's residence time, and thus promoting water evaporation and heat dissipation. In some embodiments, filler 12 can be made of materials such as polyvinyl chloride and polypropylene.

[0070] The hydraulic mechanism 20 is located within the tower body 10, below the outlet of the cooling water pipe 11, and is configured to convert the potential energy of the cooling water discharged from the outlet of the cooling water pipe 11 into kinetic energy. By installing the hydraulic mechanism within the tower body and positioning it below the outlet of the cooling water pipe, the hydraulic mechanism can be driven by the cooling water as it falls due to its own gravity.

[0071] The rotating water distribution mechanism 30 is located inside the tower body 10 and at the lower side of the outlet of the cooling water pipe 11. The rotating water distribution mechanism 30 is transmission-connected to the hydraulic mechanism 20 and is configured to rotate under the drive of the hydraulic mechanism 20 to distribute the cooling water from the outlet of the cooling water pipe 11 to the filler 12.

[0072] By installing a rotating water distribution mechanism within the tower body and positioning it below the outlet of the cooling water pipe, the rotating water distribution mechanism rotates as the cooling water falls under its own gravity, expanding the range of water distribution to the packing, thereby increasing the water distribution area. Furthermore, through the transmission connection between the rotating water distribution mechanism and the hydraulic mechanism, the hydraulic mechanism converts the gravitational potential energy of the cooling water into mechanical energy that drives the rotating water distribution mechanism. This allows the rotating water distribution mechanism to at least partially eliminate the energy consumption required to drive its rotation, thereby reducing the cooling tower's energy consumption and operating costs while still meeting its water distribution function.

[0073] refer to Figure 3In some embodiments, the hydraulic mechanism 20 includes at least one hydraulic wheel 21. The hydraulic wheel 21 has a wheel body 211 and a plurality of water receiving buckets 212 disposed on the wheel body 211. The water receiving buckets 212 are capable of receiving cooling water falling from the outlet of the cooling water pipe 11. The gravity of the cooling water contained in the water receiving buckets 212 and the impact of the falling cooling water on the receiving buckets 212 can enable the wheel body 211 to obtain a torque that causes continuous or intermittent rotation.

[0074] The hydraulic mechanism 20 may include one hydraulic wheel 21 or multiple hydraulic wheels 21. The number and size of the hydraulic wheels 21 may be determined according to the internal space of the tower body 10. Figure 1 and Figure 2 In some embodiments, the hydraulic mechanism 20 includes a plurality of hydraulic impellers 21 and a drive shaft 22 fixedly connected to each of the plurality of hydraulic impellers 21. The drive shaft 22 is in driving connection with the rotating water distribution mechanism 30. This coaxial arrangement of the plurality of hydraulic impellers can expand the water receiving range of the hydraulic mechanism 20 along the extension direction of the drive shaft 22, thereby more fully utilizing the potential energy of falling cooling water. Furthermore, the coaxial structure enables concentrated energy transfer from the plurality of hydraulic impellers in the same direction, improving energy transfer efficiency and thus reducing the energy consumption of the cooling tower.

[0075] refer to Figure 3 In some embodiments, the projection of the outlet of the cooling water pipe 11 on the horizontal reference plane RP2 passing through the rotation axis of the water impeller 21 is located on the same side of the rotation axis of the water impeller 21. Figure 3 In the figure, a dotted line indicates a vertical reference plane RP1 passing through the rotation axis of the water impeller 21. It can be seen that the multiple outlets of the cooling water pipe 11 are all located to the right of this vertical reference plane RP1. Correspondingly, on a horizontal reference plane RP2, perpendicular to this vertical reference plane RP1 and passing through the rotation axis of the water impeller 21, the projections of the multiple outlets of the cooling water pipe 11 are all located on the same side of the rotation axis of the water impeller 21.

[0076] Since the projection of the outlet of the cooling water pipe 11 on the horizontal reference plane RP2 is located on the same side of the rotation axis of the water impeller 21, the cooling water falling from the outlet of the cooling water pipe 11 can form a concentrated downward impact on the water receiving bucket 212 on the same side of the axis of the water impeller 21, so that the water impeller 21 obtains greater torque, which is beneficial to improving the speed and efficiency of the water impeller 21.

[0077] refer to Figure 1 and Figure 2In some embodiments, the hydraulic mechanism 20 includes multiple hydraulic impellers 21. The tower body 10 has multiple cooling water pipes 11. The multiple hydraulic impellers 21 correspond to the multiple cooling water pipes 11, and each hydraulic impeller 21 is located below the corresponding cooling water pipe 11. Using multiple cooling water pipes 11 can increase the range of cooling water access and improve space utilization. The multiple hydraulic impellers 21 can achieve cooling water potential energy conversion over a wider range within the tower body 10.

[0078] refer to Figure 3 In some embodiments, the tower body 10 has an air inlet 13 and an air outlet 14, and the air inlet 13 is opposite to the filler 12. The cooling tower also includes an air cooling mechanism 40, which is located at the air outlet 14 and is transmission-connected to the water-driven mechanism 20. The air cooling mechanism 40 can drive the air outside the tower body 10 to enter from the air inlet 13, pass through the filler 12 to achieve air cooling effect on the cooling water, and then be discharged from the air outlet 14. The air cooling mechanism 40 is transmission-connected to the water-driven mechanism 20 so that the air cooling mechanism 40 rotates under the drive of the water-driven mechanism 20. In this way, the energy consumption and other driving devices for driving the air cooling mechanism can be saved.

[0079] exist Figure 3 In the embodiment, the air inlet 13 can be arranged at a position on the side wall of the tower body 10 that is lower than the rotating water distribution mechanism 30, and the air outlet 14 can be arranged at the top of the tower body 10 or at a position on the side wall of the tower body 10 that is higher than the rotating water distribution mechanism 30. In this way, under the driving action of the air cooling mechanism 40 on the air, the airflow from bottom to top can not only cool the filler 12, but also directly cool the falling cooling water, thereby improving the cooling efficiency.

[0080] refer to Figure 1-Figure 3 In some embodiments, the air cooling mechanism 40 includes an impeller 41, and an impeller shaft 42 of the impeller 41 is in transmission connection with the water-driven mechanism 20 via a transmission gear set 50. The transmission gear set 50 can achieve high transmission efficiency, which helps save energy consumption. In addition, the transmission gear set 50 can achieve a more compact structure, saving space inside the cooling tower, and helping to increase the packing volume, thereby improving the efficiency of the cooling tower.

[0081] Figure 4 Schematic diagram of the structure of the water wheel in the cooling tower according to some embodiments of the present disclosure. Figure 1 and Figure 4 In some embodiments, the plurality of water receiving buckets 212 are arranged on the outer periphery of the wheel body 211 at intervals along the circumference of the wheel body 211. The circumferential arrangement of the plurality of water receiving buckets 212 on the wheel body 211 can achieve a continuous potential energy conversion effect.

[0082] refer to Figure 4 In some embodiments, the wheel body 211 has a plurality of counterweight grooves 211s arranged at intervals along the circumference of the wheel body 211. The water wheel 21 also includes a plurality of counterweight balls 213, which are respectively arranged in the plurality of counterweight grooves 211s. The counterweight grooves 211s extend along the radial direction of the wheel body 211, and the counterweight balls 213 can move radially along the wheel body 211 in the counterweight grooves 211s.

[0083] When the water wheel 21 rotates, the weight ball 503 is affected by the structure of the weight groove 211s. Figure 3 The counterweight ball on the lower side of the middle horizontal reference plane RP2 moves to a position away from the rotating axis of the water wheel 21, and the counterweight ball on the lower side of the middle horizontal reference plane RP2 moves to a position away from the rotating axis of the water wheel 21. Figure 3 The counterweight ball on the upper side of the middle horizontal reference plane RP2 moves to a position close to the rotating axis of the water wheel 21. In this way, when the water wheel 21 rotates under the impact of the cooling water, the movement of the counterweight ball in the counterweight groove enables the wheel body 211 to obtain a continuous rotation torque, so that the water wheel 21 can continuously rotate along the Figure 3 Rotate in clockwise direction.

[0084] exist Figure 4 In the embodiment, the counterweight groove 211s can be set to an arched cross-section, and the arched cross-section has an arc-shaped side and a straight side. The orientation of the arc-shaped side relative to the straight side is consistent with the orientation of the water inlet of the water receiving bucket relative to the bottom of the water receiving bucket, which makes the rolling areas of the counterweight balls on both sides of the vertical reference plane different. The counterweight ball on the water receiving side rolls on the groove wall of the straight side, while the counterweight ball on the other side rolls on the groove wall of the arc-shaped side. Since the distance between the counterweight ball on the water receiving side and the groove wall of the straight side is shorter, the counterweight ball can move faster in the groove, while the counterweight ball on the other side can roll more smoothly on the arc-shaped side, avoiding a strong impact on the counterweight groove.

[0085] Figure 5 Schematic diagram of the structure of the water receiving surface of the water receiving tray in the cooling tower according to some embodiments of the present disclosure. Figure 6 This is a schematic structural diagram of the water distribution surface of a water receiving tray in a cooling tower according to some embodiments of the present disclosure. Figure 7 2 is a schematic longitudinal cross-sectional view of a water receiving tray in a cooling tower according to some embodiments of the present disclosure. Figure 8 It is a cross-sectional schematic diagram of water distribution holes of a water receiving pan in a cooling tower according to some embodiments of the present disclosure.

[0086] refer to Figure 1 、 Figure 5-Figure 7In some embodiments, the rotating water distribution mechanism 30 includes at least one water receiving tray 31, which is rotatably supported in the tower body 10 and has a water receiving surface 31a adjacent to the outlet of the cooling water pipe 11, a water distribution surface 31b adjacent to the filler 12, and a plurality of water distribution holes 311, wherein the plurality of water distribution holes 311 connect the water receiving surface 31a and the water distribution surface 31b.

[0087] When the cooling water discharged from the outlet of the cooling water pipe 11 falls onto the water receiving surface 31a of the rotating water receiving tray 31, the cooling water is redistributed within the range of the water receiving surface 31 by the rotation of the water receiving tray 31, and the cooling water is distributed to the filler 12 on the side close to the water distribution surface 31b through the multiple water distribution holes 311 on the water receiving tray 31. Considering that in the previous embodiment, the water outlet of the cooling water pipe 11 is offset to a certain extent relative to the hydraulic wheel 21, so that the cooling water falling on the water receiving tray 31 is unevenly distributed, but by realizing the functions of water receiving and rotary water distribution through the porous and rotatable water receiving tray 31, the multiple effects of rotary uniform distribution, centrifugal water distribution, and porous water distribution can be achieved, thereby increasing the range and uniformity of water distribution, thereby effectively improving the water distribution effect.

[0088] refer to Figure 5 and Figure 8 In some embodiments, the water distribution hole 311 has a tapered opening 311s adjacent to the water receiving surface 31a. This tapered opening 311s allows cooling water to enter the water distribution hole 311 more easily, increasing the amount of cooling water entering from the water distribution hole 311, thereby allowing more cooling water to be distributed through the water distribution hole 311 and improving the water distribution effect.

[0089] refer to Figure 7 and Figure 8 In some embodiments, at least a portion of the plurality of water distribution holes 311 extends obliquely relative to the rotation axis 31x of the water receiving pan 31, and the holes located on the water receiving surface 31a are closer to the rotation axis 31x of the water receiving pan 31 than the holes located on the water distribution surface 31b. The downwardly and outwardly obliquely extending water distribution holes 311 effectively expand the water distribution range and increase the contact area between the cooling water and the packing 12.

[0090] refer to Figure 7 In some embodiments, the inclination angles of the plurality of water distribution holes 311 relative to the rotation axis 31x of the water receiving tray 31 gradually increase from the inside to the outside along the radial direction of the water receiving tray 31. Figure 8 In the embodiment, the center line 311x of the water distribution hole 311 is tilted relative to the rotation axis 31x, and the reference Figure 7As shown, the tilt angle gradually increases from the inside out. For example, the tilt angle can be set to increase by 5° outward from 0° closest to the rotation axis 31x. The center lines 311x of the innermost water distribution holes 311 can be parallel to the rotation axis 31x of the water receiving tray 31, that is, the tilt angle is 0°. This gradually increasing tilt angle from the inside out can form a water distribution range that spreads outward layer by layer, expanding the water distribution range and improving the uniformity of water distribution.

[0091] refer to Figure 5 and Figure 7 In some embodiments, the water receiving surface 31a of the water receiving pan 31 has a plurality of diverter protrusions 312 spaced apart along the circumference of the pan 31. The diverter protrusions 312 extend radially along the pan 31. For cooling water that fails to enter the water distribution holes 311, the rotation of the pan 31 guides the cooling water through the pan edge to the outermost edge of the packing 12, thereby ensuring that the cooling water comes into contact with the packing 12 as much as possible.

[0092] refer to Figure 1 、 Figure 5 and Figure 6 In some embodiments, the outer periphery of the water receiving tray 31 has a plurality of spur teeth 313, which are transmission-connected to the water-driven mechanism 20 via a transmission gear set 50. Thus, the water-driven mechanism 20 can be transmission-connected to the plurality of spur teeth 313 on the outer periphery of the water receiving tray 31 via the transmission gear set 50, thereby driving the water receiving tray 31 to rotate stably and continuously and reducing energy loss during the transmission process.

[0093] refer to Figure 1 and Figure 2 In some embodiments, the hydraulic mechanism 20 includes a transmission shaft 22 and a plurality of hydraulic impellers 21 fixedly connected to the transmission shaft 22. The rotating water distribution mechanism 30 includes at least one water receiving tray 31, the outer periphery of which has a plurality of spur teeth 313. The transmission gear set 50 may include a first bevel gear 51, a second bevel gear 52, a first spur gear 53, and a second spur gear 54.

[0094] A first bevel gear 51 is fixedly connected to the transmission shaft 22. A second bevel gear 52 meshes with the first bevel gear 51. A first spur gear 53 is coaxially connected to the second bevel gear 52 and meshes with the plurality of spur teeth 313 on the outer periphery of the water receiving tray 31. A second spur gear 54 is fixedly connected to the impeller shaft 42 and meshes with the first spur gear 53. In this embodiment, the transmission gear set 50, through the coordination of the bevel gears and spur gears, can conveniently transmit the rotation of the water impeller 21 to the water receiving tray 31 and impeller shaft 42 located at different locations and with different rotation axes within the tower body 10.

[0095] exist Figure 1-Figure 3 In the embodiment, the plurality of water impellers 21 may include two sets of water impellers 21, each located on either side of the first bevel gear 51. The rotating water distribution mechanism 30 may include two water receiving trays 31, each located on either side of the first spur gear 53. The two water receiving trays 31, the first spur gear 53, and the second spur gear 54 may be located on the same plane. The centrally located transmission gear set 50 achieves a simpler transmission function and occupies less space.

[0096] exist Figure 2 In the embodiment, the two water receiving trays 31 may be parallel to the rotation axis of the water impeller 21 , and the rotation axis of the impeller 41 may be perpendicular to the plane where the two water receiving trays 31 are located, and also perpendicular to the rotation axis of the water impeller 21 .

[0097] refer to Figure 1 and Figure 2 In some embodiments, the hydraulic mechanism 20 includes a transmission shaft 22 and a hydraulic impeller 21 fixedly connected to the transmission shaft 22. The cooling tower further includes a speed change mechanism 60 connected to the transmission shaft 22 and configured to adjust the rotational speed of the transmission shaft 22. By providing the speed change mechanism 60 to adjust the rotational speed of the transmission shaft, the speed requirements of the air cooling mechanism 40 and the rotary water distribution mechanism 30 can be met based on the condition that the hydraulic impeller 21 is driven by cooling water.

[0098] Figure 9 Schematic diagram of the control relationship of the cooling tower according to some embodiments of the present disclosure. Figure 9 In some embodiments, the speed change mechanism 60 includes a speed sensor 61 and a gearbox 62. The speed sensor 61 is configured to detect the rotational speed of the transmission shaft 22. The speed sensor 61 can directly detect the rotational speed of the transmission shaft 22 or indirectly determine the rotational speed of the transmission shaft 22 by detecting the rotational speed of the water wheel.

[0099] The gearbox 62 is drivingly connected to the drive shaft 22. The operating frequency of the gearbox 62 can be adjusted according to the rotational speed of the drive shaft 22. The gearbox 62 can convert the torque output by the motor output shaft into driving torque for the drive shaft 22. The gearbox 62 can be disposed within the tower body 10, or can be disposed outside the tower body 10 or on the side wall of the tower body 10.

[0100] In this way, by detecting the rotational speed of the transmission shaft 22, the frequency of the gearbox 62 is adjusted according to the rotational speed, so that the air cooling mechanism 40 and the rotating water distribution mechanism 30 can cooperate with the water wheel to convert the gravitational potential energy of the cooling water to reduce energy consumption while meeting the rotational speed requirements.

[0101] refer to Figure 9In some embodiments, the speed change mechanism 60 further includes a processor 63. The processor 63 is signal-connected to the speed sensor 61 and the gearbox 62, and is configured to: in response to the rotational speed V of the transmission shaft 22 being less than a first rotational speed threshold V1, operate the gearbox 62 at full frequency; in response to the rotational speed V of the transmission shaft 22 being greater than or equal to the first rotational speed threshold V1 and less than or equal to a second rotational speed threshold V2, operate the gearbox 62 at a sub-full frequency, for example, operate the gearbox 62 at 1 / 2 times the full frequency; in response to the rotational speed V of the transmission shaft 22 being greater than the second rotational speed threshold V2, stop the gearbox 62.

[0102] When V < V1 is detected, it indicates that the cooling water flow rate is not large at this time, and the power that the water wheel can provide is limited. Therefore, the gearbox is operated at full frequency so that the air cooling mechanism and the rotating water distribution mechanism can reach the required speed. When V1 ≤ V ≤ V2 is detected, it indicates that the cooling water flow rate is relatively large at this time, and the water wheel can provide a certain amount of power. At this time, it is only necessary to operate the gearbox at, for example, 1 / 2 times the full frequency to enable the air cooling mechanism and the rotating water distribution mechanism to reach the required speed. When V > V2 is detected, it indicates that the cooling water flow rate is very large at this time, and the air cooling mechanism and the rotating water distribution mechanism can reach the required speed without the need for the gearbox to provide driving force. Therefore, the gearbox can be stopped to save energy consumption.

[0103] Figure 10 The following is a flow chart of a control method for a cooling tower according to some embodiments of the present disclosure. Figure 9-10 The present disclosure also provides a method for controlling the cooling tower. The method includes steps S1 and S2. Steps S1 and S2 can be executed by the processor 63 as processor instructions.

[0104] In step S1, the speed sensor 61 detects the rotational speed of the transmission shaft 22. In step S2, the operating frequency of the transmission 62 is adjusted based on the rotational speed of the transmission shaft 22. By detecting the rotational speed of the transmission shaft 22 and adjusting the frequency of the transmission 62 accordingly, the air cooling mechanism 40 and the rotary water distribution mechanism 30 can meet the required rotational speed while cooperating with the hydraulic impeller to convert the gravitational potential energy of the cooling water, thereby reducing energy consumption.

[0105] In some embodiments, step S2 of adjusting the operating frequency of the gearbox 62 according to the rotational speed of the transmission shaft 22 includes: in response to the rotational speed V of the transmission shaft 22 being less than the first speed threshold V1, causing the gearbox 62 to operate at full frequency; in response to the rotational speed V of the transmission shaft 22 being greater than or equal to the first speed threshold V1 and less than or equal to the second speed threshold V2, causing the gearbox 62 to operate at a non-full frequency, for example, causing the gearbox 62 to operate at 1 / 2 times the full frequency; in response to the rotational speed V of the transmission shaft 22 being greater than the second speed threshold V2, causing the gearbox 62 to stop operating.

[0106] When V < V1 is detected, it indicates that the cooling water flow rate is not large at this time, and the power that the water wheel can provide is limited. Therefore, the gearbox is operated at full frequency so that the air cooling mechanism and the rotating water distribution mechanism can reach the required speed. When V1 ≤ V ≤ V2 is detected, it indicates that the cooling water flow rate is relatively large at this time, and the water wheel can provide a certain amount of power. At this time, it is only necessary to operate the gearbox at, for example, 1 / 2 times the full frequency to enable the air cooling mechanism and the rotating water distribution mechanism to reach the required speed. When V > V2 is detected, it indicates that the cooling water flow rate is very large at this time, and the air cooling mechanism and the rotating water distribution mechanism can reach the required speed without the need for the gearbox to provide driving force. Therefore, the gearbox can be stopped to save energy consumption.

[0107] Thus far, various embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0108] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A cooling tower, characterized in that: include: A tower body (10) having a cooling water pipe (11) and a filler (12); A hydraulic mechanism (20) is located inside the tower body (10) and below the outlet of the cooling water pipe (11), and is configured to convert the gravitational potential energy of the cooling water discharged from the outlet of the cooling water pipe (11) into kinetic energy; a rotating water distribution mechanism (30) located in the tower body (10) and at the lower side of the outlet of the cooling water pipe (11); the rotating water distribution mechanism (30) is in transmission connection with the hydraulic mechanism (20) and is configured to rotate under the drive of the hydraulic mechanism (20) to distribute the cooling water from the outlet of the cooling water pipe (11) to the filler (12); The hydraulic mechanism (20) comprises at least one hydraulic wheel (21), and the projection of the outlet of the cooling water pipe (11) on a horizontal reference plane (RP2) passing through the rotation axis of the hydraulic wheel (21) is located on the same side of the rotation axis of the hydraulic wheel (21).

2. The cooling tower according to claim 1, wherein The water wheel (21) comprises a wheel body (211) and a plurality of water receiving buckets (212), wherein the plurality of water receiving buckets (212) are arranged on the outer periphery of the wheel body (211) at intervals along the circumference of the wheel body (211).

3. The cooling tower according to claim 2, characterized in that The water-powered mechanism (20) comprises a plurality of water-powered wheels (21) and a transmission shaft (22) fixedly connected to the plurality of water-powered wheels (21); the transmission shaft (22) is in transmission connection with the rotating water distribution mechanism (30); and the plurality of water-powered wheels (21) rotate coaxially.

4. The cooling tower according to claim 1, wherein The hydraulic mechanism (20) includes a plurality of hydraulic wheels (21), the tower body (10) has a plurality of cooling water pipes (11), the plurality of hydraulic wheels (21) correspond to the plurality of cooling water pipes (11), and each hydraulic wheel (21) is located below the corresponding cooling water pipe (11).

5. The cooling tower according to claim 2, wherein: The wheel body (211) has a plurality of counterweight grooves (211s) arranged at intervals along the circumference of the wheel body (211). The water wheel (21) further includes a plurality of counterweight balls (213) respectively arranged in the plurality of counterweight grooves (211s). The counterweight grooves (211s) extend in the radial direction of the wheel body (211). The counterweight balls (213) can move in the radial direction of the wheel body (211) within the counterweight grooves (211s).

6. The cooling tower according to claim 1, wherein The rotating water distribution mechanism (30) comprises at least one water receiving tray (31), the water receiving tray (31) being rotatably supported in the tower body (10) and having a water receiving surface (31a) adjacent to the outlet of the cooling water pipe (11), a water distribution surface (31b) adjacent to the filler (12), and a plurality of water distribution holes (311), wherein the plurality of water distribution holes (311) communicate with the water receiving surface (31a) and the water distribution surface (31b).

7. The cooling tower according to claim 6, characterized in that The water distribution hole (311) has a tapered opening (311s) adjacent to the water receiving surface (31a).

8. The cooling tower according to claim 6, characterized in that At least part of the plurality of water distribution holes (311) extends obliquely relative to the rotation axis (31x) of the water receiving tray (31), and the holes located on the water receiving surface (31a) are closer to the rotation axis (31x) of the water receiving tray (31) than the holes located on the water distribution surface (31b).

9. The cooling tower according to claim 8, characterized in that The inclination angles of the multiple water distribution holes (311) relative to the rotation axis (31x) of the water receiving tray (31) gradually increase from the inside to the outside along the radial direction of the water receiving tray (31).

10. The cooling tower according to claim 6, wherein The water receiving surface (31a) of the water receiving tray (31) has a plurality of flow guiding protrusions (312) arranged at intervals along the circumference of the water receiving tray (31), and the flow guiding protrusions (312) extend radially along the water receiving tray (31).

11. The cooling tower according to claim 6, wherein The outer periphery of the water receiving tray (31) has a plurality of straight teeth (313), and the plurality of straight teeth (313) are transmission-connected to the water-powered mechanism (20) via a transmission gear set (50).

12. The cooling tower according to claim 1, wherein The tower body (10) has an air inlet (13) and an air outlet (14), wherein the air inlet (13) is opposite to the filler (12). The cooling tower further comprises an air cooling mechanism (40), wherein the air cooling mechanism (40) is located at the air outlet (14) and is transmission-connected to the water-powered mechanism (20). The air cooling mechanism (40) is configured to rotate under the drive of the water-powered mechanism (20) to drive air outside the tower body (10) into the filler (12) to achieve an air cooling effect on the cooling water.

13. The cooling tower according to claim 12, wherein: The air inlet (13) is arranged at a position on the side wall of the tower body (10) lower than the rotating water distribution mechanism (30), and the air outlet (14) is arranged at the top of the tower body (10) or at a position on the side wall of the tower body (10) higher than the rotating water distribution mechanism (30).

14. The cooling tower according to claim 12, wherein: The air cooling mechanism (40) includes an impeller (41), and an impeller shaft (42) of the impeller (41) is transmission-connected to the water-powered mechanism (20) via a transmission gear set (50).

15. The cooling tower according to claim 14, wherein The water-powered mechanism (20) comprises a transmission shaft (22) and a plurality of water-powered wheels (21) fixedly connected to the transmission shaft (22); the rotating water distribution mechanism (30) comprises at least one water receiving tray (31); the outer periphery of the water receiving tray (31) comprises a plurality of straight teeth (313); and the transmission gear set (50) comprises: A first bevel gear (51) fixedly connected to the transmission shaft (22); a second bevel gear (52) meshing with the first bevel gear (51); A first spur gear (53) is coaxially connected to the second bevel gear (52) and meshes with a plurality of spur teeth (313) on the outer periphery of the water receiving tray (31); The second spur gear (54) is fixedly connected to the impeller shaft (42) and meshes with the first spur gear (53).

16. The cooling tower according to claim 15, wherein The plurality of water-driven wheels (21) include two groups of water-driven wheels (21), the two groups of water-driven wheels (21) being located on both sides of the first bevel gear (51), respectively; the rotating water distribution mechanism (30) includes two water receiving trays (31), which are located on both sides of the first spur gear (53), respectively; the two water receiving trays (31), the first spur gear (53), and the second spur gear (54) are located on the same plane.

17. The cooling tower according to claim 14, wherein The hydraulic mechanism (20) includes a transmission shaft (22) and a hydraulic wheel (21) fixedly connected to the transmission shaft (22). The cooling tower also includes a speed change mechanism (60). The speed change mechanism (60) is connected to the transmission shaft (22) and is configured to adjust the rotation speed of the transmission shaft (22).

18. The cooling tower according to claim 17, wherein The speed change mechanism (60) comprises: a speed sensor (61) configured to detect the rotation speed of the transmission shaft (22); and A gearbox (62) is drivingly connected to the transmission shaft (22), and the operating frequency of the gearbox (62) can be adjusted according to the rotational speed of the transmission shaft (22).

19. The cooling tower according to claim 18, wherein The speed change mechanism (60) further includes: The processor (63) is connected to the speed sensor (61) and the gearbox (62) for signal transmission. Wherein, the processor (63) is configured to: In response to the rotational speed of the transmission shaft (22) being less than a first rotational speed threshold, operating the gearbox (62) at full frequency; In response to the rotation speed of the transmission shaft (22) being greater than or equal to the first rotation speed threshold and less than or equal to the second rotation speed threshold, operating the gearbox (62) at a sub-full frequency; In response to the rotation speed of the transmission shaft (22) being greater than the second rotation speed threshold, the gearbox (62) is stopped, wherein the second rotation speed threshold is greater than the first rotation speed threshold.

20. A method for controlling a cooling tower according to claim 18 or 19, characterized in that: include: detecting the rotational speed of the transmission shaft (22) by means of the speed sensor (61); The operating frequency of the gearbox (62) is adjusted according to the rotational speed of the transmission shaft (22).

21. The control method according to claim 20, characterized in that: The step of adjusting the operating frequency of the gearbox (62) according to the rotational speed of the transmission shaft (22) comprises: In response to the rotational speed of the transmission shaft (22) being less than a first rotational speed threshold, operating the gearbox (62) at full frequency; In response to the rotation speed of the transmission shaft (22) being greater than or equal to the first rotation speed threshold and less than or equal to the second rotation speed threshold, operating the gearbox (62) at a sub-full frequency; In response to the rotation speed of the transmission shaft (22) being greater than the second rotation speed threshold, the gearbox (62) is stopped, wherein the second rotation speed threshold is greater than the first rotation speed threshold.

Images