Speed-regulating water sprinkling and spraying device

Abstract

A speed-regulating sprinkling device is applied to a cooling tower and comprises a spray head support, a water inlet component is arranged at the top of the spray head support, a connecting piece is arranged at the bottom of the spray head support, and the water inlet component is connected with the connecting piece through a connecting frame; the spiral guide impeller is arranged on the connecting piece and is configured to rotate under the impact of water introduced by the water inlet component; the water throwing disc assembly is arranged below the connecting piece, and the water throwing disc assembly and a spiral guide impeller penetrate through the connecting piece to be connected, so that the spiral guide impeller and the water throwing disc assembly synchronously rotate relative to the connecting piece; the flow guide grid cover is arranged at the end part, far away from the water throwing disc assembly, of the spiral guide vane wheel and is gradually converged in the direction far away from the spiral guide vane wheel; and the speed regulation component is in threaded connection with the water inlet component and is configured to move along the axis of the water inlet component relative to the water inlet component so as to change the relative position of the speed regulation component and the flow guide grid cover, and then the flow speed of water impacting the spiral guide impeller is adjusted.

Description

Technical Field

[0001] This disclosure relates to the field of cooling tower technology, and more specifically, to a speed-regulating water spraying device for cooling towers. Background Technology

[0002] The cooling of industrial circulating water is mainly achieved within the cooling tower. After the circulating hot water enters the tower, it gradually cools down from top to bottom in the spray zone, the packing zone, and the rain zone, with the greatest temperature drop occurring in the packing zone. To fully utilize the cooling effect of the packing zone, the water from the spray nozzles in the cooling tower needs to be evenly sprayed onto the top surface of the packing zone. However, it is not permissible to densely pack the nozzles above the packing, as this would hinder airflow. Therefore, the cooling tower places high demands on the performance and distribution of the spray nozzles. Existing nozzles generally suffer from small and uneven spray areas, and the spray area is difficult to adjust. This is because the water jet entering the nozzle directly hits the (various styles) water distribution plate and splashes outwards, dissipating kinetic energy and resulting in an insufficient splash area. The nozzles themselves cannot adjust the spray area, and areas with more splashing always have more water, while areas with less splashing always have less water, leading to uneven water distribution. This prevents the spray zone and the packing zone from fully utilizing their functions, thus requiring urgent solutions. Summary of the Invention

[0003] The purpose of this disclosure is to provide a speed-regulating water spraying device for use in cooling towers, comprising:

[0004] A nozzle bracket has a water inlet component at the top and a connector at the bottom, and the water inlet component and the connector are connected by a connecting frame.

[0005] A spiral guide impeller is mounted on the connecting member and configured to rotate under the impact of water introduced by the water inlet component;

[0006] A water-spinning plate assembly is disposed below the connector and is connected to the spiral guide impeller through the connector, so that the spiral guide impeller and the water-spinning plate assembly rotate synchronously relative to the connector;

[0007] A flow guide shroud is disposed at the end of the spiral guide impeller away from the water-throwing plate assembly, and gradually converges in the direction away from the spiral guide impeller;

[0008] A speed regulating component is threadedly connected to the water inlet component and configured to move relative to the water inlet component along the axis of the water inlet component to change the relative position of the speed regulating component and the flow guide shroud, thereby adjusting the flow rate of the water impacting the spiral guide impeller.

[0009] In some embodiments, the speed regulating component includes:

[0010] The screw-in part is a hollow cylindrical part, and the outer wall of the screw-in part is provided with external threads, which are configured to engage with the internal threads of the water inlet component.

[0011] The speed regulating part is a hollow component that extends from the rotating part toward the spiral guide impeller. The inner wall of the speed regulating part gradually converges in the direction toward the spiral guide impeller. The speed regulating part is configured to accommodate at least a portion of the flow guide shroud.

[0012] In some embodiments, the outer wall of the speed regulating part gradually converges in the direction toward the spiral guide impeller, and the outer wall of the speed regulating part is provided with ribs that extend along the axial direction of the speed regulating part. The outer wall of the water inlet component includes a plane disposed around the axial direction of the water inlet component.

[0013] In some embodiments, a threaded hole is provided on the side wall of the water inlet component, the threaded hole penetrating the side wall of the water inlet component, the threaded hole being configured to allow a fastening screw to pass through in order to fix the position of the speed regulating component relative to the water inlet component.

[0014] In some embodiments, the flow guide shroud is generally a hollow conical cylinder, and a plurality of slots are provided on the side wall of the hollow conical cylinder. The plurality of slots are evenly arranged on the side wall of the hollow conical cylinder, so that a portion of the water flowing through the speed regulating part enters the interior of the hollow conical cylinder through the slots.

[0015] In some embodiments, the helical guide vane includes:

[0016] The spiral guide impeller shaft has a through hole extending axially through the spiral guide impeller shaft, the through hole being configured to drain a portion of the water from the water inlet component;

[0017] The spiral guide vane is spirally arranged on the outer periphery of the spiral guide vane shaft and configured to receive the impact of water introduced by the water inlet component. The spiral guide vane is provided with a notch.

[0018] A skirt is provided on the outer periphery of the spiral guide vane shaft. The surface of the skirt away from the spiral guide vane contacts the surface of the connector facing the water inlet component, forming a sliding bearing pair.

[0019] In some embodiments, at least one of the surface of the skirt away from the helical guide vane and the surface of the connector facing the water inlet component includes an uneven surface, and the skirt is provided with a through hole that penetrates the skirt and is configured to introduce water between the surface of the skirt away from the helical guide vane and the surface of the connector facing the water inlet component.

[0020] In some embodiments, the water-spinning tray assembly includes a flow channel water-spinning tray, the flow channel water-spinning tray comprising:

[0021] The flow channel water-throwing disc shaft has an axially penetrating through-hole. The flow channel water-throwing disc shaft is threadedly connected to the spiral guide impeller shaft. The through-hole of the flow channel water-throwing disc shaft is connected to the through-hole of the flow channel water-throwing disc shaft. The connection part between the spiral guide impeller shaft and the flow channel water-throwing disc has an external thread, and the connection part between the flow channel water-throwing disc shaft and the spiral guide impeller shaft has an internal thread.

[0022] Multiple water-spraying disc blades are spirally arranged around the water-spraying disc shaft of the flow channel, configured to cause the water-spraying disc of the flow channel to rotate under the action of wind force.

[0023] In some embodiments, the plurality of water-spinning disc blades are spaced apart by their orthographic projections on a plane perpendicular to the axis of the water-spinning disc in the flow channel. Each of the plurality of water-spinning disc blades is provided with a plurality of protruding strips and a slot penetrating the water-spinning disc blade. The plurality of protruding strips extend in a direction away from the axis of the water-spinning disc in the flow channel to form a flow channel. The plurality of protruding strips are arc-shaped and protrude toward a first rotation direction. The ends of the plurality of protruding strips near the axis of the water-spinning disc in the flow channel have a converging structure. The slot is arc-shaped and cuts off at least one protruding strip.

[0024] In some embodiments, the water-splashing tray assembly includes a water distributor, the water distributor comprising:

[0025] A hollow rotating shaft has a through hole that axially penetrates the hollow rotating shaft. The hollow rotating shaft is threadedly connected to the water-throwing disc shaft of the flow channel. The through hole of the hollow rotating shaft is connected to the through hole of the water-throwing disc shaft of the flow channel. The connection part between the hollow rotating shaft of the water distributor and the water-throwing disc of the flow channel has an external thread, and the connection part between the water-throwing disc of the flow channel and the hollow rotating shaft has an internal thread.

[0026] The water distribution component is in the shape of a hollow frustum and has a through hole penetrating the hollow frustum. The water distribution component is fixedly connected to the hollow rotating shaft via a connecting ridge and is configured to receive the impact of water flowing through the through hole of the hollow rotating shaft and to spray and disperse it.

[0027] Compared with the prior art, the above-described solutions of this disclosure have at least the following beneficial effects:

[0028] The variable-speed sprinkler system has a speed-regulating component whose relative position to the guide vane is adjustable. This allows for adjustment of the water flow velocity impacting the spiral guide impeller, thus regulating the impeller's rotational speed and consequently the water-spraying area of ​​the water-spraying disc assembly that rotates with the impeller. This allows for the adjustment of the water output from nozzles at different pressure points on the cooling tower's water distribution pipe to achieve the same flow velocity, maintaining a uniform water-spraying area for each nozzle. This ensures even water distribution to the packing material in the cooling tower, improving heat exchange efficiency and achieving energy savings. Attached Figure Description

[0029] Figure 1The following is a schematic diagram of the structure of a speed-regulating sprinkler system provided in some embodiments of this disclosure;

[0030] Figure 2 for Figure 1 Schematic diagram of the structure of the central nozzle support;

[0031] Figure 3 for Figure 1 Schematic diagram of the structure of the central spiral guide impeller;

[0032] Figure 4 for Figure 1 Schematic diagram of the structure of the central guide vane;

[0033] Figure 5 for Figure 1 Schematic diagram of the speed regulating component;

[0034] Figure 6 for Figure 1 Schematic diagram of the structure of the central channel water-throwing plate;

[0035] Figure 7 for Figure 1 A schematic diagram of the water equalizer. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this disclosure clearer, the disclosure will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0037] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The singular forms “a,” “the,” and “the” as used in the embodiments of this disclosure and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0038] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0039] It should be understood that although the terms first, second, third, etc., may be used to describe structures in the embodiments of this disclosure, these structures should not be limited to these terms. These terms are only used to distinguish different structures. For example, without departing from the scope of the embodiments of this disclosure, a first component may also be referred to as a second component, and similarly, a second component may also be referred to as a first component.

[0040] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0041] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0042] In related technologies, multiple sprinkler heads are connected to the water distribution pipe in the cooling tower to spray hot water onto the packing material. Typically, these sprinkler heads, using the same specifications, are evenly spaced along the distribution pipe. However, because the water pressure in the distribution pipe gradually decreases with the flow of hot water, the spray area of ​​the sprinkler heads connected to different pressure points varies. The sprinkler head structure itself does not have the function of adjusting the spray area. This results in some areas of the packing material not being sprayed. To overcome this problem, it is necessary to accurately calculate the pressure at each location in the distribution pipe and the different spray areas of the sprinkler heads under different pressures. Precisely setting the sprinkler head connections within the distribution pipe is crucial to achieve full coverage of the packing material. However, the pressure at different locations along the distribution pipe of the assembled cooling tower may vary, and the sprinkler head positions cannot be moved. Furthermore, the spray area of ​​each sprinkler head is determined by its own structure and the pressure at its installation location, leading to the continued problem of some packing material not being sprayed or some areas receiving excessive spray – i.e., uneven spraying of the packing material.

[0043] This disclosure provides a speed-regulating water spraying device for use in a cooling tower, comprising: a nozzle support having a water inlet component at the top and a connector at the bottom, the water inlet component and the connector being connected by a connecting frame; a spiral guide impeller disposed on the connector and configured to rotate under the impact of water introduced by the water inlet component; a water-slinging disc assembly disposed below the connector and connected to the spiral guide impeller through the connector, such that the spiral guide impeller and the water-slinging disc assembly rotate synchronously relative to the connector; a flow guide shroud disposed at the end of the spiral guide impeller away from the water-slinging disc assembly and gradually converging in a direction away from the spiral guide impeller; and a speed-regulating component threadedly connected to the water inlet component and configured to move relative to the water inlet component along the axis of the water inlet component to change the relative position of the speed-regulating component and the flow guide shroud, thereby adjusting the flow rate of the water impacting the spiral guide impeller.

[0044] The speed-regulating sprinkler system disclosed herein includes a speed-regulating component whose relative position to the guide vane is adjustable. This allows for adjustment of the water flow velocity impacting the spiral guide impeller, thereby regulating the rotational speed of the spiral guide impeller and consequently adjusting the water distribution area of ​​the water-spraying disc assembly that rotates with the spiral guide impeller. This enables the water output from nozzles at different pressure points on the water distribution pipe in the cooling tower to be adjusted to the same flow velocity, maintaining a uniform water distribution area for each nozzle and achieving even water spraying.

[0045] The optional embodiments of this disclosure are described in detail below with reference to the accompanying drawings.

[0046] Figure 1 A schematic diagram of the structure of a speed-regulating water spraying device provided in some embodiments of this disclosure is shown. Figure 2 for Figure 1 Schematic diagram of the structure of the nozzle support. Figure 3 for Figure 1 Schematic diagram of the structure of the spiral guide impeller. Figure 4 for Figure 1 A schematic diagram of the structure of the central guide grille. Figure 5 for Figure 1 A schematic diagram of the speed regulating component.

[0047] like Figures 1 to 5 As shown, this disclosure provides a speed-regulating water spraying device 100, which is a nozzle for a cooling tower. The speed-regulating water spraying device 100 includes a nozzle support 10, a spiral guide impeller 20, a water-throwing plate assembly, a flow guide grid cover 50, and a speed regulating component 60.

[0048] The nozzle bracket 10 has a water inlet component 11 at the top, which is, for example, a hollow cylindrical structure for introducing external water. It is installed, for example, on the circulating hot water pipe of a cooling tower. The nozzle bracket 10 has a connector 12 at the bottom, which is also, for example, a hollow cylindrical structure for connecting and supporting other components. The water inlet component 11 and the connector 12 are connected, for example, via a connecting frame 13.

[0049] The spiral guide impeller 20 is mounted on the connector 12 and supported by the connector 12. The spiral guide impeller 20 is configured to rotate under the impact of water introduced by the water inlet component 11, and the water introduced by the water inlet component 11 provides the rotational power.

[0050] A water-spraying tray assembly is disposed below the connector 12. The water-spraying tray assembly and the spiral guide wheel 20 are connected through the connector 12, for example, by a threaded connection. The spiral guide wheel 20 and the water-spraying tray assembly can rotate synchronously with respect to the connector 12. That is, the water-spraying tray assembly rotates synchronously with the spiral guide wheel 20 relative to the connector 12 under the drive of the spiral guide wheel 20, for example, rotating counterclockwise, to spray the water collected by the water-spraying tray assembly outwards, achieving a uniform spray. The water-spraying tray assembly includes, for example, a flow channel water-spraying tray 30 and a water distributor 40, the specific structures of which will be described in detail later in this document. In some embodiments, the water distributor 40 may be omitted.

[0051] The direction of rotation mentioned in this disclosure, such as counterclockwise, refers to the direction of rotation as observed when viewed from above unless otherwise specified.

[0052] The flow guide shroud 50 is located at the end of the spiral guide impeller 20 away from the water-throwing plate assembly, and gradually converges in the direction away from the spiral guide impeller 20. The flow guide shroud 50 is connected to the spiral guide impeller 20, for example, by a snap-fit ​​mechanism, and rotates as the spiral guide impeller 20 rotates. Specifically, the bottom of the flow guide shroud 50 is provided with a snap-fit ​​member 51, which engages with a snap-fit ​​groove 24 on the inner wall of the top of the spiral guide impeller 20, thereby snapping the flow guide shroud 50 to the spiral guide impeller 20. In some embodiments, the flow guide shroud 50 and the spiral guide impeller 20 can be an integral structure, for example, integrally molded, reducing component and assembly complexity.

[0053] The speed regulating component 60 is threadedly connected to the water inlet component 11 and is configured to move relative to the water inlet component 11 along the axis of the water inlet component 11 to change the relative position of the speed regulating component 60 and the flow guide shroud 50, thereby adjusting the flow rate of the water impacting the spiral guide impeller 20.

[0054] In some embodiments, the speed regulating component 60 includes a rotating part 61 and a speed regulating part 62.

[0055] The screw-in part 61 is a hollow cylindrical shape, and the outer wall of the screw-in part 61 is provided with external threads, which are configured to engage with the internal threads of the water inlet component 11. This allows the speed regulating component 60 to move axially relative to the water inlet component 11 through the engagement of the internal and external threads, and allows the two to maintain multiple relative positions.

[0056] The speed regulating part 62 is a hollow component that extends from the screw joint 61 toward the spiral guide impeller 20. The inner wall of the speed regulating part 62 gradually converges in the direction toward the spiral guide impeller 20. The speed regulating part 62 is configured to accommodate at least a portion of the flow guide shroud 50.

[0057] The end of the speed regulating component 60 away from the speed regulating component 62 is connected to the circulating hot water pipe and the water distribution pipe in the cooling tower. The end of the speed regulating component 62 away from the screw connection 61 has a water outlet, which supplies water from the circulating hot water pipe to the spiral guide impeller 20. Some of the water flows through the space between the inner wall of the speed regulating component 62 and the outer wall of the guide grid cover 50, impacting the spiral guide blades of the spiral guide impeller 20 and causing the spiral guide impeller 20 to rotate. As the speed regulating component 60 and the guide grid 50 approach each other, that is, as the guide grid 50 gradually penetrates deeper into the speed regulating part 62, the minimum distance between the inner wall of the speed regulating part 62 and the outer wall of the guide grid 50 gradually decreases, that is, the water outlet cross-sectional area of ​​the speed regulating component 60 gradually decreases. This increases the pressure of the water flowing through the space between the inner wall of the speed regulating part 62 and the outer wall of the guide grid 50 when it leaves the speed regulating component 60, and increases the impact force of the water flow. This increases the rotational speed of the spiral guide impeller 20, which in turn increases the rotational speed of the water-splitting plate assembly driven by the spiral guide impeller 20, thereby increasing the water-spraying area of ​​the water-splitting plate assembly. Conversely, as the speed regulating component 60 and the guide grille 50 move further apart, i.e., the guide grille 50 gradually exits the interior of the speed regulating part 62, the minimum distance between the inner wall of the speed regulating part 62 and the outer wall of the guide grille 50 gradually increases. This means that the water outlet cross-sectional area of ​​the speed regulating component 60 gradually increases, resulting in a decrease in the pressure of the water leaving the speed regulating component 60 as it flows through the space between the inner wall of the speed regulating part 62 and the outer wall of the guide grille 50. Consequently, the impact force of the water flow decreases, thereby reducing the rotational speed of the spiral guide impeller 20. This, in turn, reduces the rotational speed of the water-splitting disc assembly driven by the spiral guide impeller 20, and consequently reduces the water-spraying area of ​​the water-splitting disc assembly.

[0058] In summary, by cooperating with the speed regulating component 60 and the guide grid cover 50 in the speed-regulating water spraying device 100, the water spraying area of ​​the speed-regulating water spraying device 100 can be adjusted.

[0059] In some embodiments, the outer wall of the speed regulating part 62 gradually converges in the direction toward the spiral guide impeller, and ribs 63 are provided on the outer wall of the speed regulating part 62, extending along the axial direction of the speed regulating part 62. There are two or more ribs 63, evenly distributed on the outer wall of the speed regulating part 62. An operator can manually rotate the ribs 63 to rotate the speed regulating component 60 relative to the water inlet component 11, thereby adjusting the relative position of the speed regulating component 60 and the guide grid cover 50, and thus adjusting the water spraying area of ​​the speed-regulating sprinkler device 100.

[0060] In some embodiments, the speed regulating part 62 of the speed regulating member 60 is, for example, an inverted hollow frustum, and the flow guide shroud 50 is, for example, a hollow frustum.

[0061] In some embodiments, such as Figures 1 to 5 As shown, the outer wall of the water inlet component 11 includes a plane 111 arranged axially around the water inlet component 11. This facilitates the operator's grip on the water inlet component 11, allowing for easy adjustment of the relative position between the speed regulating component 60 and the flow guide shroud 50 by operating the rotating rib plate 63. The water inlet component 11 may have, for example, a hexagonal skirt, i.e., six rectangular planes that converge axially around the water inlet component 11.

[0062] In some embodiments, a threaded hole 112 is provided on the side wall of the water inlet component 11, for example, on a plane 111. The threaded hole 112 penetrates the side wall of the water inlet component 11 and is configured to allow a fastening screw to pass through in order to fix the position of the speed regulating component 60 relative to the water inlet component 11, thereby fixing the relative position of the speed regulating component 60 and the guide grid cover 50. At this time, the water spraying area of ​​the water-spraying disc assembly of the speed-regulating water spraying device 100 is fixed.

[0063] In some embodiments, such as Figures 1 to 5 As shown, the flow guide shroud 50 is, for example, a hollow conical cylinder. Multiple slots 52 are evenly distributed on the side wall of the hollow conical cylinder, allowing a portion of the water flowing through the speed regulating unit to pass through these slots and enter the interior of the hollow conical cylinder. The water flowing through the speed regulating component 60 is diverted by the flow guide shroud 50. A portion of the water is guided by the outer surface of the flow guide shroud 50 through the spiral guide impeller 20 to the flow channel water-splitting plate 30 in the water-splitting plate assembly. This portion of water impacts the spiral guide blades of the spiral guide impeller 20, causing the spiral guide impeller 20 to rotate. Another portion of the water enters the interior of the flow guide shroud 50 through the slots 52 and reaches the water distributor 40 in the water-splitting plate assembly through the through-hole of the spiral guide impeller shaft 21.

[0064] In some embodiments, such as Figures 1 to 5As shown, the slot 52 is, for example, an elongated slot, including a first slot 521 and a second slot 522. The first slot 521 and the second slot 522 extend substantially from the bottom of the conical cylinder to the top of the bottom of the conical cylinder, and are alternately and evenly arranged in the circumferential direction of the conical cylinder. The length of the first slot 521 is greater than or equal to the length of the second slot 522. The first slot 521 and the second slot 522 divide the sidewall of the conical cylinder into multiple sidewall portions. In some embodiments, the slot 52 further includes a third slot 523, formed on each sidewall portion. The length of the third slot 523 is less than the lengths of the first slot 521 and the second slot 522.

[0065] In some embodiments, the first slot 521, the second slot 522, and the third slot 523 have a narrow width, for example, 5 mm to 15 mm. This ensures the smooth flow of water through the speed regulating component 60 while preventing foreign objects carried by the water from entering the guide grid cover 50 and causing blockage of the internal flow channels of the speed-regulating sprinkler device 100, such as the through hole of the spiral guide impeller shaft 21.

[0066] In some embodiments, the top of the hollow conical body of the flow guide shroud 50 is also provided with a hole 53 to guide some water into the interior of the flow guide shroud 50 and supplement the diversion function of the slot 52.

[0067] In some embodiments, such as Figures 1 to 5 As shown, the helical guide impeller 20 includes a helical guide impeller shaft 21, helical guide blades 22, and a skirt 23.

[0068] The spiral guide impeller shaft 21 is, for example, a hollow cylindrical structure with a through hole 211 axially penetrating the spiral guide impeller shaft 21, the through hole 211 being configured to drain a portion of the water from the water inlet component 11.

[0069] The spiral guide vanes 22 are spirally arranged on the outer periphery of the spiral guide impeller shaft 21, configured to receive the impact of water introduced by the water inlet component 11. Most of the water from the circulating hot water pipe of the cooling tower introduced by the water inlet component of the nozzle bracket 10 impacts the spiral guide vanes 22, driving the spiral guide impeller 20 to rotate counterclockwise. A small portion of the water is guided by the through hole 211 of the spiral guide impeller shaft 21. The flow velocity and flow rate of the water impacting the spiral guide vanes 22 affect the rotational speed of the spiral guide impeller 20.

[0070] In some embodiments, the spiral guide vane is provided with a notch 221, which is, for example, an arc-shaped notch, allowing a portion of the water impacting the spiral guide vane 22 to pass directly through and fall onto the flow channel water-throwing plate 30, so that the water impacting the spiral guide vane 22 falls more evenly onto the flow channel water-throwing plate 30.

[0071] In some embodiments, the ratio of the amount of water impacting the spiral guide vane 22 to the amount of water drained through the through hole 211 of the spiral guide vane shaft 21 is 9:1 to 7:3.

[0072] The skirt 23 is disposed on the outer periphery of the spiral guide impeller shaft 21, and is closer to the connector 12 of the nozzle support 10 than the spiral guide blade 22. The surface of the skirt 23 away from the spiral guide blade 22, i.e., the bottom surface of the skirt, contacts the surface of the connector 12 of the nozzle support 10 facing the water inlet component 11, i.e., the top surface of the connector, forming a sliding bearing pair, so that the spiral guide impeller 20 can rotate smoothly relative to the connector 12 of the nozzle support 10 under the impact of the water flow.

[0073] In some embodiments, such as Figures 1 to 5 As shown, at least one of the surfaces of the skirt 23 away from the spiral guide vane 22 and the surface of the connector 12 facing the water inlet component 11 includes an uneven surface; for example, both surfaces may have uneven surfaces. A through-hole 231 is provided on the skirt 23, penetrating the skirt 23 and configured to introduce water between the surface of the skirt away from the spiral guide vane and the surface of the connector facing the water inlet component. The number of through-holes 231 may be one or more. When there are multiple through-holes 231, they are evenly distributed along the axial direction of the skirt 23. The surface of the skirt away from the spiral guide vane and the surface of the connector facing the water inlet component form a sliding friction surface. The through-holes 231 can introduce some water between these two surfaces, forming a water film. This water film acts as a lubricant, reducing frictional resistance and increasing the rotational speed of the spiral guide vane, thereby increasing the rotational speed of the water-spraying disc assembly and expanding the water-spraying area. Simultaneously, the water film also reduces the wear of the sliding friction surface, extending the service life of the spray device.

[0074] In some embodiments, such as Figures 1 to 5As shown, the uneven surface is, for example, a toothed friction surface. Specifically, the connector 12 has a hollow cylindrical structure. On the surface of the connector 12 facing the water inlet component 11, i.e., the upper surface of the connector 12, there are first grooves spaced around the central through hole of the connector 12. The first grooves extend from the inner edge to the outer edge of the upper surface of the connector 12. In some embodiments, the first grooves are arc-shaped, convex in a clockwise direction. The surface of the skirt 23 away from the helical guide vane 22, i.e., the lower surface of the skirt 23, has second grooves spaced around the helical guide vane shaft 21. The second grooves extend from the inner edge to the outer edge of the lower surface of the skirt 23. In some embodiments, when viewed from the lower surface of the skirt 23, the second grooves are arc-shaped, convex in a clockwise direction. Based on the above design, the surface of the skirt 23 away from the helical guide vane 22 and the surface of the connector 12 facing the water inlet component 11 can maintain a supporting function while forming a suitable water film.

[0075] Figure 6 for Figure 1 Schematic diagram of the structure of the central channel water-throwing plate; Figure 7 for Figure 1 A schematic diagram of the structure of the water equalizer, in some embodiments, such as... Figures 1 to 7 As shown, the water-spraying plate assembly in the speed-regulating water spraying device 100 includes a flow channel water-spraying plate 30 and a water distributor 40.

[0076] A flow channel water-throwing plate 30 is disposed below the connecting member 12 and connected to the spiral guide impeller 20 through the connecting member 12, for example by a threaded connection. It is configured to receive a portion of the water impacting the spiral guide blades 22 and guide this portion of water out through the outer periphery of the flow channel water-throwing plate 20. The spiral guide impeller 20 and the flow channel water-throwing plate 30 can rotate synchronously with respect to the connecting member 12; that is, the flow channel water-throwing plate 30 rotates synchronously with the spiral guide impeller 20 relative to the connecting member 12, for example, counterclockwise. This causes water falling into the flow channel water-throwing plate 30 to be thrown out through the outer periphery of the flow channel water-throwing plate, resulting in hot water being sprayed evenly around the flow channel water-throwing plate 30. The faster the spiral guide impeller 20 rotates, the larger the diameter of the hot water spray.

[0077] In some embodiments, such as Figures 1 to 7 As shown, the flow channel water-throwing plate 30 includes a flow channel water-throwing plate shaft 31 and multiple water-throwing plate blades 32.

[0078] The flow channel water-throwing disc shaft 31 has an axially penetrating through-hole. The flow channel water-throwing disc shaft 31 is threadedly connected to the spiral guide impeller shaft 21. The through-hole of the flow channel water-throwing disc shaft 31 communicates with the through-hole of the flow channel water-throwing disc shaft 21, and is configured to guide part of the water diverted by the through-hole of the spiral guide impeller shaft. The connection part between the spiral guide impeller shaft 21 of the spiral guide impeller 20 and the flow channel water-throwing disc has an external thread, and the connection part between the flow channel water-throwing disc shaft 31 and the spiral guide impeller shaft has an internal thread. That is, the end of the spiral guide impeller shaft 21 away from the spiral guide blade 22 is inserted into the through-hole of the spiral guide impeller shaft 31 of the flow channel water-throwing disc 30 and threadedly connected. With this configuration, the inner diameter of the through-hole of the flow channel water-throwing disc shaft 31 is larger than the inner diameter of the spiral guide impeller shaft 21, so that the part of the water diverted by the flow channel water-throwing disc shaft 31 will not be obstructed when flowing through the through-hole of the flow channel water-throwing disc shaft 31.

[0079] Multiple water-spraying disc blades 32 are spirally arranged around the water-spraying disc shaft 31 in the cooling tower, configured to rotate the water-spraying disc 30 under the action of wind force. The water-spraying disc blades 32 have a blade arrangement structure similar to that of a fan, so that the upward airflow in the cooling tower acts on the bottom surface of the water-spraying disc 30, providing additional power for the rotation of the water-spraying disc 30. The number of water-spraying disc blades 32 is, for example, three or more.

[0080] In some embodiments, the water-spraying disc blade 32 is generally fan-shaped, having two straight edges and an arcuate edge located between the two straight edges.

[0081] In some embodiments, such as Figures 1 to 7 As shown, multiple water-spraying disc blades 32 are inclined relative to a plane perpendicular to the water-spraying disc axis 31 of the flow channel. The orthographic projections of the multiple water-spraying disc blades 32 on the plane perpendicular to the water-spraying disc axis 31 of the flow channel are spaced apart. In some embodiments, the number of water-spraying disc blades 32 is, for example, three. The orthographic projection of each water-spraying disc blade 32 on the plane perpendicular to the water-spraying disc axis 31 of the flow channel is a fan shape of 90 degrees to 110 degrees. With this design, the upward airflow in the cooling tower blows on the lower surface of the water-spraying disc blades 32, creating a thrust that drives the blades to rotate. This thrust, combined with the thrust of the water on the spiral guide impeller 20, forms a combined force, causing the spiral guide impeller 20 and the flow channel water-spraying disc assembly to rotate relative to the connecting member 12. A portion of the upward airflow in the cooling tower passes through the gap between two adjacent water-spraying disc blades 32, directly blowing the water flowing through the gap between two adjacent water-spraying disc blades 32, increasing heat exchange, that is, adding a cooling method to the spray zone, which is beneficial to improving the cooling efficiency of the spray zone. The variable speed water spraying device disclosed herein can rotate under the action of water flow and wind without the need for additional power in the cooling tower, thereby achieving uniform water spraying. It makes full use of the existing water and wind energy in the cooling tower to make the nozzles rotate and do work to optimize the water spraying effect, help the packing to efficiently cool the water temperature, and improve the heat exchange efficiency in the cooling tower while saving energy.

[0082] In some embodiments, such as Figures 1 to 7 As shown, any one of the plurality of water-spinning disc blades 32 is provided with a protruding rib 321, which extends in a direction away from the axis of the water-spinning disc to form a flow channel 322. Specifically, each water-spinning disc blade 32 has a plurality of protruding ribs 321 on its upper surface, which extend from the inside to the arc-shaped edge on the upper surface of the water-spinning disc blade 32. A flow channel 322 is formed between adjacent protruding ribs 321 to guide the water falling on the water-spinning disc blade 32 toward the arc-shaped edge of the water-spinning disc blade 32.

[0083] In some embodiments, such as Figures 1 to 7 As shown, the protruding portion 321 includes a first protruding portion 3211 and a second protruding portion 3212, which are alternately spaced. The length of the first protruding portion 3211 is greater than that of the second protruding portion 3212. The flow channel 322 includes a main flow channel 3221 and a branch flow channel 3222. The main flow channel 3221 is formed between two adjacent first protruding portions 3211, and the main flow channel 3221 is divided into two branch flow channels 3222 by the second protruding portion 3212 located between two adjacent first protruding portions 3211. This guides the water flow towards the arc-shaped edge while causing the water flow to diffuse upward around the water-spraying plate 30 in the flow channel.

[0084] In some embodiments, the protruding portion 321 is an arc shape protruding in the first rotation direction, for example, counterclockwise, to reduce the flow resistance of water in the flow channel of the rotating flow channel water-throwing plate 30. The end of the protruding portion 321 near the shaft 31 of the flow channel water-throwing plate has a converging structure for cutting the water flow and guiding the water flow into the adjacent flow channel 322.

[0085] In some embodiments, such as Figures 1 to 7 As shown, the arc-shaped edge of any one of the plurality of water-spraying disc blades 32 bends and extends away from the axis 31 of the water-spraying disc in the flow channel, so that the cross-section of the arc-shaped edge is parabolic. This allows water flowing over the arc-shaped edge to be thrown upwards, causing the water flow to be thrown further away from the water-spraying disc 30 in the flow channel, thereby increasing the spray area.

[0086] In some embodiments, any one of the plurality of water-spraying disc blades 32 has a slit 323 extending along the direction away from the water-spraying disc axis 31 of the flow channel on its arc-shaped edge. This forms a toothed structure 324 at the arc-shaped edge. Water falling onto the water-spraying disc blades 32 flows along the flow channel 322 and becomes strip-shaped water. The water in the flow channel is subjected to centrifugal force. As the radius of rotation increases, the centrifugal force on the water in the flow channel also increases. When the water flows to the arc-shaped edge, it is cut into small water droplets by the toothed structure 324. At this time, the centrifugal force on the water droplets is the greatest, thus throwing them farther and ensuring the spray area.

[0087] In some embodiments, the slit 323 includes a first slit 3231 and a second slit 3232, with the first slit 3231 and the second slit 3232 corresponding one-to-one, and the length of the first slit being greater than that of the second slit.

[0088] In some embodiments, the first slit 3231 and the second slit 3232 are alternately spaced on the arc-shaped edge, and the distance between the first slit 3231 and its corresponding second slit 3232 is less than the distance between the first slit 3231 and its adjacent second slit 3232.

[0089] In some embodiments, such as Figures 1 to 7 As shown, any one of the plurality of water-spraying disc blades 32 has a slot 325 extending through it. The slot 325 has an arc-shaped structure, for example, an arc-shaped structure protruding away from the axis 31 of the water-spraying disc in the flow channel. The slot 325 cuts off at least one protruding strip 321. This arrangement allows some water on the water-spraying disc blade 32 to pass through the slot 325 and fall below the water-spraying disc blade 32, making the water-spraying disc 30 in the flow channel relatively uniform in its water-spraying area and avoiding any waterless areas below it.

[0090] In some embodiments, such as Figures 1 to 7 As shown, the water distributor 40 includes a hollow rotating shaft 41 and a water distribution component 42.

[0091] The hollow shaft 41 has a through hole extending axially through it. The hollow shaft 41 is threadedly connected to the flow channel water-throwing plate shaft 31 of the flow channel water-throwing plate 30. The through hole of the hollow shaft 41 communicates with the through hole of the flow channel water-throwing plate shaft 41, and is used to transmit water diverted through the through hole of the spiral guide impeller shaft 31. The connection part between the hollow shaft 41 of the water distributor 40 and the flow channel water-throwing plate has an external thread, and the connection part between the flow channel water-throwing plate 30 and the hollow shaft 41 has an internal thread. That is, the end of the hollow shaft 41 away from the water distributor 42 is inserted into the through hole of the spiral guide impeller shaft 31 of the flow channel water-throwing plate 30 and threadedly connected. The spiral guide impeller shaft 21 and the hollow rotating shaft 42 are threaded into the through holes of the spiral guide impeller shaft 31 from both sides. The inner diameter of the through hole of the hollow rotating shaft 41 of the water distributor 40 is greater than or equal to the inner diameter of the through hole of the spiral guide impeller shaft 21 of the spiral guide impeller 20. With this design, water passing through the through holes of the spiral guide impeller shaft 21 of the spiral guide impeller 20, the spiral guide impeller shaft 31 of the flow channel water-throwing plate 30, and the hollow rotating shaft 41 of the water distributor 40 flows unimpeded to the water distributor 42, ensuring the flow rate of water distributed to the water distributor 42.

[0092] The water distribution component 42 is shaped like a frustum and has a through hole 421 that passes through the hollow frustum. It is fixedly connected to the hollow rotating shaft 41 by a connecting ridge 43. It is configured to receive the impact of water flowing through the through hole of the hollow rotating shaft and to splash and disperse it, so that the water distribution plate 30 in the flow channel can distribute water relatively evenly within its water distribution area.

[0093] Some embodiments of this disclosure also provide a cooling tower, including the speed-regulating water spraying device described in the foregoing embodiments.

[0094] Cooling towers equipped with the speed-regulating water spraying device 100 of this disclosure do not need to have the speed-regulating water spraying device installed at the water distribution pipe position precisely set. They can be roughly evenly set. The water distribution area of ​​each speed-regulating water spraying device can be adjusted by adjusting the flow rate of each device, ensuring that the filler is evenly watered and that the spraying is uniform.

[0095] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems or apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

Claims

1. A speed-regulating water spraying device, applied to a cooling tower, characterized in that, include: A nozzle bracket has a water inlet component at the top and a connector at the bottom, and the water inlet component and the connector are connected by a connecting frame. A spiral guide impeller is mounted on the connecting member and configured to rotate under the impact of water introduced by the water inlet component; A water-spinning plate assembly is disposed below the connector and is connected to the spiral guide impeller through the connector, so that the spiral guide impeller and the water-spinning plate assembly rotate synchronously relative to the connector; A flow guide shroud is disposed at the end of the spiral guide impeller away from the water-throwing plate assembly, and gradually converges in the direction away from the spiral guide impeller; A speed regulating component is threadedly connected to the water inlet component and configured to move relative to the water inlet component along the axis of the water inlet component to change the relative position of the speed regulating component and the flow guide shroud, thereby adjusting the flow rate of the water impacting the spiral guide impeller.

2. The speed-regulating water spraying device according to claim 1, characterized in that, The speed regulating component includes: The screw-in part is a hollow cylindrical part, and the outer wall of the screw-in part is provided with external threads, which are configured to engage with the internal threads of the water inlet component. The speed regulating part is a hollow component that extends from the rotating part toward the spiral guide impeller. The inner wall of the speed regulating part gradually converges in the direction toward the spiral guide impeller. The speed regulating part is configured to accommodate at least a portion of the flow guide shroud.

3. The speed-regulating water spraying device according to claim 2, characterized in that, The outer wall of the speed regulating part gradually converges in the direction toward the spiral guide impeller. Ribs are provided on the outer wall of the speed regulating part and extend along the axial direction of the speed regulating part. The outer wall of the water inlet component includes a plane arranged around the axial direction of the water inlet component.

4. The speed-regulating water spraying device according to claim 3, characterized in that, The side wall of the water inlet component is provided with a threaded hole that penetrates the side wall of the water inlet component. The threaded hole is configured to allow a fastening screw to pass through in order to fix the position of the speed regulating component relative to the water inlet component.

5. The speed-regulating water spraying device according to claim 3, characterized in that, The flow guide shroud is generally in the shape of a hollow conical cylinder. Multiple slots are opened on the side wall of the hollow conical cylinder. The multiple slots are evenly arranged on the side wall of the hollow conical cylinder, so that part of the water flowing through the speed regulating part enters the interior of the hollow conical cylinder through the slots.

6. The speed-regulating sprinkler system according to any one of claims 1-5, characterized in that, The spiral guide vane includes: The spiral guide impeller shaft has a through hole extending axially through the spiral guide impeller shaft, the through hole being configured to drain a portion of the water from the water inlet component; The spiral guide vane is spirally arranged on the outer periphery of the spiral guide vane shaft and configured to receive the impact of water introduced by the water inlet component. The spiral guide vane is provided with a notch. A skirt is provided on the outer periphery of the spiral guide vane shaft. The surface of the skirt away from the spiral guide vane contacts the surface of the connector facing the water inlet component, forming a sliding bearing pair.

7. The speed-regulating sprinkler system according to claim 6, characterized in that, At least one of the surface of the skirt away from the spiral guide vane and the surface of the connector facing the water inlet component includes an uneven surface. The skirt is provided with a through hole that penetrates the skirt and is configured to introduce water between the surface of the skirt away from the spiral guide vane and the surface of the connector facing the water inlet component.

8. The speed-regulating water spraying device according to claim 6, characterized in that, The water-spraying tray assembly includes a flow channel water-spraying tray, which includes: The flow channel water-throwing disc shaft has an axially penetrating through-hole. The flow channel water-throwing disc shaft is threadedly connected to the spiral guide impeller shaft. The through-hole of the flow channel water-throwing disc shaft is connected to the through-hole of the flow channel water-throwing disc shaft. The connection part between the spiral guide impeller shaft and the flow channel water-throwing disc has an external thread, and the connection part between the flow channel water-throwing disc shaft and the spiral guide impeller shaft has an internal thread. Multiple water-spraying disc blades are spirally arranged around the water-spraying disc shaft of the flow channel, configured to cause the water-spraying disc of the flow channel to rotate under the action of wind force.

9. The speed-regulating water spraying device according to claim 8, characterized in that, The plurality of water-spinning disc blades are arranged at intervals on the orthographic projection of a plane perpendicular to the axis of the water-spinning disc in the flow channel. Each of the plurality of water-spinning disc blades is provided with a plurality of protruding strips and a slot penetrating the water-spinning disc blade. The plurality of protruding strips extend in a direction away from the axis of the water-spinning disc in the flow channel to form a flow channel. The plurality of protruding strips are arc-shaped and protrude toward the first rotation direction. The ends of the plurality of protruding strips near the axis of the water-spinning disc in the flow channel have a converging structure. The slot is arc-shaped and cuts off at least one protruding strip.

10. The speed-regulating water spraying device according to claim 8, characterized in that, The water-spraying tray assembly includes a water distributor, which comprises: A hollow rotating shaft has a through hole that axially penetrates the hollow rotating shaft. The hollow rotating shaft is threadedly connected to the water-throwing disc shaft of the flow channel. The through hole of the hollow rotating shaft is connected to the through hole of the water-throwing disc shaft of the flow channel. The connection part between the hollow rotating shaft of the water distributor and the water-throwing disc of the flow channel has an external thread, and the connection part between the water-throwing disc of the flow channel and the hollow rotating shaft has an internal thread. The water distribution component is in the shape of a hollow frustum and has a through hole penetrating the hollow frustum. The water distribution component is fixedly connected to the hollow rotating shaft via a connecting ridge and is configured to receive the impact of water flowing through the through hole of the hollow rotating shaft and to spray and disperse it.

Images