Uniform water distribution device of cooling tower

Abstract

The utility model relates to the technical field of cooling towers, and discloses a uniform water distribution device of a cooling tower, which comprises a water distribution disc movably arranged in a water distribution tank and a driving assembly, the bottom wall of the water distribution disc is attached to the bottom wall of the water distribution tank, a plurality of water distribution holes corresponding to through holes of a water distributor are formed in the water distribution disc, and the water distribution disc is provided with a water inlet and a water outlet. The driving assembly is used for driving the water distribution disc to move in the horizontal direction, so that the overlapping range of the water distribution holes and the corresponding through holes is changed. The problem that cooling water distribution of a water distributor in the prior art is not uniform is solved.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower technology, and in particular to a cooling tower uniform water distribution device. Background Technology

[0002] Currently, the requirements for energy conservation and consumption reduction in cigarette production are gradually increasing. According to relevant materials, the energy consumption of the refrigeration system accounts for about 40% of the total energy consumption of cigarette factories in maintaining environmental temperature and humidity, indicating huge potential for energy saving. Furthermore, with the continuous improvement of national requirements for energy conservation and consumption reduction, research on energy-efficient refrigeration systems has become a major trend. Cooling towers play a crucial role in exchanging heat between the factory interior and the outside environment. If the cooling tower's heat dissipation performance is poor, it will reduce the operating efficiency of the refrigeration system and increase energy consumption. A cooling tower generally includes a fan, water pipes, a water distributor, and packing material. The outlet of the water pipe is located directly above the center of the water distributor. The water distributor is generally a container with an opening at the top and a bottom opening. Water is delivered into the water distributor through the water pipes and then sprinkled onto the packing material through the uniformly perforated holes at the bottom. In actual operation, it has been found that when cooling water from the water pipes enters the water distributor, the water volume is uneven due to possible tilting during the cooling tower installation and misalignment of the water pipe outlet. Meanwhile, to prevent cooling water from splashing, splash guards are installed at the outlet of the cooling tower water supply pipe. While preventing cooling water from splashing out of the water distributor, this also hinders the effective flow of cooling water, resulting in situations where one side of the water distributor distributes more water than the other, or more water in the middle and less at both ends. This causes uneven distribution of droplets at the initial position of entering the packing, resulting in a reduction in the liquid film spreading area and heat transfer capacity, a decrease in the temperature difference between the inlet and outlet of the cooling water, and ultimately affecting the efficient operation of the refrigeration system. Utility Model Content

[0003] The purpose of this invention is to provide a cooling tower uniform water distribution device to solve the problem of uneven cooling water distribution in existing water distributors.

[0004] This utility model solves the above-mentioned technical problems through the following technical means: a cooling tower uniform water distribution device, including a water distribution plate movably arranged in a water distribution trough and a driving component, wherein the bottom wall of the water distribution plate is in contact with the bottom wall of the water distribution trough, and a plurality of water distribution holes are opened on the water distribution plate corresponding to the through holes of the water distributor, and the driving component is used to drive the water distribution plate to move in the horizontal direction, so that the overlap range between the water distribution holes and the corresponding through holes changes.

[0005] By setting the above structure, when the water distributor distributes water unevenly, the drive component drives the water distribution plate to move, reducing the overlap between the water distribution holes and the through holes. This reduces the water flow rate at the end with a larger water distribution volume. With the cooling water inflow remaining unchanged, the amount of cooling water stored in the water distributor increases, the flow rate of the cooling water increases and it covers the entire bottom wall of the water distribution tank. The cooling water drips evenly from all the through holes onto the packing material.

[0006] Furthermore, the drive assembly includes a motor, a lead screw, and a mounting bracket. The motor and the mounting bracket are both fixedly mounted on the water distributor. The lead screw is horizontally positioned, with one end rotatably connected to the mounting bracket and the other end fixedly connected to the output end of the motor. A connecting plate is provided between the lead screw and the water distribution plate. The top of the connecting plate is threaded onto the surface of the lead screw, and the bottom is fixedly connected to the water distribution plate.

[0007] By setting up the above structure, the motor rotates, which drives the lead screw to rotate, thereby causing the connecting plate and water distribution plate to move along the lead screw axis. The structure is simple and easy to install.

[0008] Furthermore, a float control assembly is provided at the end of the water distributor with a smaller water distribution volume. The float control assembly includes a controller, a transmission rod, a float, and a mounting block. The controller is fixedly installed on the top of the end of the water distributor with a smaller water distribution volume. The transmission rod is rotatably mounted on the controller at its middle section. The mounting block is located above the transmission rod. The mounting block has a cavity inside, and a slider is slidably installed in the cavity. An elongated groove is opened at the bottom of the mounting block, and the elongated groove communicates with the cavity. A slot is opened at the bottom of the slider for the transmission rod to be inserted. One end of the transmission rod is fixedly connected to the float, and the other end passes through the elongated groove and is inserted into the slot. A sensor is installed in the cavity, and the sensor and the motor are electrically connected to the controller.

[0009] By setting up the above structure, the liquid level at the end of the water distributor with a smaller water distribution volume can change the height of the float. The transmission rod then forms a lever structure. The movement of the float drives the slider to move in the cavity through the transmission rod. The sensor feeds back the position information of the slider to the controller, thereby determining the cooling water level at the end of the water distributor with a smaller water distribution volume, and thus enabling the controller to control the motor to work.

[0010] Furthermore, a number of ball bearings are embedded at the bottom edge of the water distribution plate, and all of the ball bearings are in rolling contact with the inner sidewall of the water distributor.

[0011] By setting up the above structure, the water distribution plate can move more smoothly relative to the water distributor.

[0012] Furthermore, the water distribution plate is provided with clearance portions at both ends.

[0013] By setting up the above structure, interference with other structures on the water distributor can be avoided during the movement of the water distribution plate.

[0014] Furthermore, the diameter of the water distribution hole is the same as the diameter of the through hole.

[0015] By setting up the above structure, the movement of the water distribution plate makes it easier to control the overlap range between the water distribution holes and the through holes, making it easier to control the water flow rate.

[0016] The beneficial effects of this utility model are as follows: By setting a movable water distribution plate and a driving component, and opening water distribution holes on the water distribution plate corresponding to the through holes, in the initial state, the water distribution holes are aligned and connected with the through holes, and the water distribution flow reaches the maximum. When the water distribution is uneven, the driving component drives the water distribution plate to move, and the overlap range between the water distribution holes and the through holes is reduced. Under the condition that the cooling water inflow remains unchanged, the amount of cooling water stored on the water distributor increases, the flow of cooling water increases and covers the bottom wall of the entire water distribution tank, and the cooling water drips evenly from all the through holes to the packing, thereby improving the cooling efficiency of the cooling tower, reducing the running time of the cooling tower fan, and reducing the energy consumption of the equipment. Attached Figure Description

[0017] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0018] Figure 1 This is a schematic diagram of the installation structure of a cooling tower uniform water distribution device on a water distributor according to the present invention.

[0019] Figure 2 yes Figure 1 A magnified structural diagram of point A in the middle.

[0020] Figure 3 yes Figure 1 A partial structural diagram.

[0021] Figure 4 yes Figure 3 A magnified structural diagram at point B in the middle.

[0022] Figure 5 This is a cross-sectional view of the float control component in a cooling tower uniform water distribution device of this utility model.

[0023] Figure 6 yes Figure 5 A magnified structural diagram at point C.

[0024] Figure 7 This is a cross-sectional view of the water distribution tray in this utility model.

[0025] Figure 8 yes Figure 7 A magnified structural diagram at point D.

[0026] In the above attached figures: 1. Water distributor; 2. Water supply pipe; 3. Water distribution trough; 4. Water distribution tray; 5. Overflow pipe; 6. Motor; 7. Lead screw; 8. Mounting bracket; 9. Controller; 10. Transmission rod; 11. Float; 12. Water distribution hole; 13. Through hole; 14. Arc plate; 15. Ball bearing; 16. Connecting plate; 17. Reinforcing plate; 18. Mounting block; 19. Cavity; 20. Long strip groove; 21. Slot; 22. Slider; 23. Sensor; 24. Clearance part. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and represent schematic diagrams, not actual pictures. They should not be construed as limiting the utility model. To better illustrate the embodiments of this utility model, some components in the figures may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable for those skilled in the art that some well-known mechanisms and their descriptions may be omitted in the figures.

[0028] In the figures of this utility model embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the figures are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. In the description of this application, terms such as "first", "second", etc. are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] like Figure 1-8As shown in the figure, this utility model embodiment proposes a cooling tower uniform water distribution device. The device is installed on the water distributor 1 of the cooling tower to improve the water distribution of the water distributor 1 which is uneven, and to keep the water distributor 1 uniformly distributing water. The top surface of the water distributor 1 is provided with a downwardly recessed water distribution groove 3. The bottom wall of the water distribution groove 3 has several through holes 13 that penetrate the water distributor 1. Cooling water drips onto the packing through the through holes 13. The cooling tower uniform water distribution device includes a water distribution plate 4 movably disposed in the water distribution trough 3 and a driving component. The bottom wall of the water distribution plate 4 is in contact with the bottom wall of the water distribution trough 3. The water distribution plate 4 has a plurality of water distribution holes 12 corresponding to the through holes 13 of the water distributor 1. The driving component is used to drive the water distribution plate 4 to move in the horizontal direction, so that the overlap range between the water distribution holes 12 and the corresponding through holes 13 changes. In this embodiment, the aperture of the water distribution holes 12 is preferably the same as the aperture of the through holes 13. With this structural design, when the water distribution holes 12 and the through holes 13 are aligned and connected, the water distribution flow rate is at its maximum. When the driving component drives the water distribution plate 4 to move, the water distribution holes 12 and the through holes 13 are staggered, the overlap range between the two is reduced, the water distribution flow rate is reduced, and the cooling water supply remains unchanged. The amount of cooling water stored in the water distributor 1 increases, the flow rate of the cooling water increases and covers the entire bottom wall of the water distribution trough 3. The cooling water is always at a high water level in the water distributor 1, and the cooling water drips evenly from all the through holes 13 to the packing.

[0030] The drive assembly includes a motor 6, a lead screw 7, and a mounting bracket 8. The motor 6 is fixedly mounted on the top surface of the water distributor 1 by bolts. The mounting bracket 8 is shaped like an "Ω" and is parallel to the width direction of the water distributor 1. The mounting bracket 8 is horizontally mounted above the water distributor 1, and both ends of the mounting bracket 8 are fixedly mounted on the top surface of the water distributor 1 by bolts. The lead screw 7 is horizontally set, and the axis of the lead screw 7 is parallel to the length direction of the water distributor 1. One end of the lead screw 7 is rotatably connected to the mounting bracket 8 through a bearing, and the other end is fixedly connected to the output end of the motor 6. A connecting plate 16 is provided between the lead screw 7 and the water distribution plate 4. The top of the connecting plate 16 is threaded onto the surface of the lead screw 7, and the bottom is fixedly connected to the water distribution plate 4. In this embodiment, the connecting plate 16 has an L-shaped cross-section. The horizontal section of the connecting plate 16 is attached to the top wall of the water distribution plate 4 and fixedly connected to the water distribution plate 4. The vertical section of the connecting plate 16 has a threaded hole for the lead screw 7 to pass through. A reinforcing plate 17 is fixed between the vertical section and the horizontal section of the connecting plate 16 to increase the stability of the connecting plate 16. When the motor 6 rotates, it drives the lead screw 7 to rotate, thereby driving the connecting plate 16 and the water distribution plate 4 to move along the length direction of the water distributor 1, so that the overlap range of the water distribution hole 12 and the through hole 13 changes. The structure is simple and the installation is convenient.

[0031] A float control assembly is provided at the end of the water distributor 1 where the water distribution volume is small. The float control assembly includes a controller 9, a transmission rod 10, a float 11, and a mounting block 18. The controller 9 is fixedly installed at the top of the end of the water distributor 1 where the water distribution volume is small by bolts. The transmission rod 10 is rotatably installed in the middle of one side of the controller 9. The rotation axis of the transmission rod 10 is parallel to the width direction of the water distributor 1. The mounting block 18 is located above the transmission rod 10. A cavity 19 is provided inside the mounting block 18 along the length direction of the water distributor 1. A slider 22 is slidably installed in the cavity 19. A long strip groove 20 is opened at the bottom of the mounting block 18 along the length direction of the water distributor 1. The long strip groove 20 communicates with the cavity 19. A slot 21 is opened at the bottom of the slider 22 for the transmission rod 10 to be inserted. One end of the transmission rod 10 is fixedly connected to the float 11, and the other end passes through the long strip groove 20 and is inserted into the slot 21. A sensor 23 is fixedly installed in the cavity 19. The sensor 23 and the motor 6 are both electrically connected to the controller 9.

[0032] In this embodiment, the cooling water level at the end of the water distributor 1 with a smaller water distribution volume can change the height of the float 11. The float 11 drives the transmission rod 10 to rotate, thereby driving the slider 22 to move in the cavity 19. The sensor 23 feeds back the position information of the slider 22 in the cavity 19 to the controller 9, so that the cooling water level at the end of the water distributor 1 with a smaller water distribution volume can be determined. The controller 9 controls the motor 6 to work, driving the water distribution plate 4 to move.

[0033] A number of ball bearings 15 are embedded at the bottom edge of the water distribution tray 4. All the ball bearings 15 roll in contact with the inner side wall of the water distributor 1. In this embodiment, the connection between the bottom wall and the side wall of the existing water distribution trough 3 is usually chamfered. Therefore, the movable water distribution tray 4 added in this application is also designed with arc-shaped plates 14 on both sides. The bottom of the arc-shaped plates 14 is embedded with ball bearings 15. A number of ball bearings 15 are evenly spaced along the length of the water distributor 1. The bottom of the ball bearings 15 rolls in contact with the chamfered structure at the connection between the bottom wall and the side wall of the water distribution trough 3. With this structural design, the water distribution tray 4 moves more smoothly in the water distribution trough 3.

[0034] The water distribution plate 4 is provided with clearance portions 24 at both ends. In this embodiment, since the water distributor 1 is provided with overflow pipes 5 at both ends, the water distribution plate 4 is provided with clearance portions 24 at the overflow pipes 5 to avoid interference between the water distribution plate 4 and the overflow pipes 5 during the movement of the water distribution plate 4.

[0035] Working principle:

[0036] When staff inspect and maintain the cooling tower, they visually observe whether there is uneven water distribution. If so, the uniform water distribution device of this application is installed.

[0037] In actual use, the float 11 is located at the end of the water distributor 1 with a smaller water distribution volume. Initially, the water distribution holes 12 of the water distribution plate 4 are aligned and connected with the through holes 13 of the water distributor 1. Due to the uneven water distribution of the water distributor 1, the cooling water level at the end of the water distributor 1 with a smaller water distribution volume is low or there is no cooling water. The float 11 is located at the lowest position. At this time, the slider 22 is furthest from the sensor 23. The sensor 23 feeds back the signal to the controller 9. The controller 9 controls the motor 6 to work. The motor 6 drives the lead screw 7 to rotate, thereby driving the connecting plate 16 and the water distribution plate 4 to move along the length of the water distributor 1. The water distribution holes 12 and the through holes 13 are staggered, and the overlap range between them is reduced. The water flow rate of the cooling water at the end of the water distributor 1 with a larger water distribution volume is reduced, and the cooling water begins to accumulate on the water distributor 1. It should be noted that the water distribution plate 4 can also be moved directly until the water distribution holes 12 and the through holes 13 are completely staggered, that is, the cooling water only... Water can be distributed downwards through a very small number of through holes 13 outside the water distribution plate 4. Cooling water is continuously input through the water supply pipe 2, and cooling water begins to accumulate in the water distributor 1. The flow of cooling water increases and covers the bottom of the entire water distribution tank 3. The cooling water level at the end of the water distributor 1 with a small water distribution volume increases, and the float ball 11 rises. Through the transmission rod 10, it drives the slider 22 to slide closer to the sensor 23. When the liquid level at the end of the water distributor 1 with a small water distribution volume reaches the preset value, the sensor 23 feeds back the cooling water level information to the controller 9 based on the position information of the slider 22. The controller 9 controls the motor 6 to work, so that the water distribution plate 4 moves back. The overlap range of the water distribution holes 12 and through holes 13 gradually increases, and cooling water drips evenly from all the water distribution holes 12 and through holes 13 onto the packing. This achieves long-term uniform water distribution in the water distributor 1, improves the cooling efficiency of the cooling tower, reduces the running time of the cooling tower fan, and reduces the energy consumption of the equipment.

[0038] The cooling tower uniform water distribution device of this application is designed for cooling towers with uneven water distribution. Without changing the existing structure, it does not require changing the water supply pipe 2 and the power pump, nor does it require adding an additional water supply pipe 2 and power pump. It is only necessary to lay the movable water distribution plate 4 in the water distribution trough 3, and then install the other components one by one with bolts. Although the overall water distribution of the water distributor 1 to the packing will decrease after the uniform water distribution device of this application is installed due to the reduced overlap of the water distribution hole 12 and the through hole 13, compared with the uneven water distribution of the existing water distributor 1, it can achieve long-term stable uniform water distribution of the water distributor 1 with a suitable reduction in water flow rate. The economic benefits are very obvious. The structure of this application is simple, easy to install, low in cost, and easy to implement.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. A uniform water distribution device for cooling tower, which is arranged on a water distributor (1), the top surface of the water distributor (1) is provided with a downwardly recessed water distribution groove (3), the bottom wall of the water distribution groove (3) is provided with a plurality of through holes (13) penetrating the water distributor (1), characterized in that: The cooling tower uniform water distribution device comprises a water distribution plate (4) movably arranged in a water distribution groove (3) and a driving assembly, the bottom wall of the water distribution plate (4) is attached to the bottom wall of the water distribution groove (3), a plurality of water distribution holes (12) are formed on the water distribution plate (4) corresponding to the through holes (13) of the water distributors (1), and the driving assembly is used for driving the water distribution plate (4) to move in the horizontal direction, so that the overlapping range of the water distribution holes (12) and the corresponding through holes (13) changes.

2. A uniform distribution device for a cooling tower according to claim 1, characterized in that: The driving assembly comprises a motor (6), a lead screw (7) and a mounting bracket (8), the motor (6) and the mounting bracket (8) are fixedly installed on the water distributor (1), the lead screw (7) is horizontally arranged, one end of the lead screw (7) is rotatably connected with the mounting bracket (8), the other end is fixedly connected with the output end of the motor (6), and a connecting plate (16) is arranged between the lead screw (7) and the water distribution plate (4), the connecting plate (16) is threadedly sleeved on the surface of the lead screw (7), and the bottom is fixedly connected with the water distribution plate (4).

3. A uniform distribution device for a cooling tower as defined in claim 2, wherein: The water distributor (1) is provided with a float control assembly at the end with small water distribution amount, the float control assembly comprises a controller (9), a transmission rod (10), a float (11) and a mounting block (18), the controller (9) is fixedly installed on the top of the end of the water distributor (1) with small water distribution amount, the transmission rod (10) is rotatably installed on the controller (9), the mounting block (18) is located above the transmission rod (10), the mounting block (18) is internally provided with a cavity (19), a sliding block (22) is slidably installed in the cavity (19), a long slot (20) is formed in the bottom of the mounting block (18), the long slot (20) is in communication with the cavity (19), a clamping groove (21) is formed in the bottom of the sliding block (22) for inserting the transmission rod (10), one end of the transmission rod (10) is fixedly connected with the float (11), the other end passes through the long slot (20) and is inserted into the clamping groove (21), a sensor (23) is arranged in the cavity (19), and the sensor (23) and the motor (6) are electrically connected with the controller (9).

4. A uniform distribution device for a cooling tower according to claim 1, characterized in that: A plurality of rolling balls (15) are embedded at the bottom edge of the water distribution plate (4), and the rolling balls (15) are in rolling contact with the inner side wall of the water distributor (1).

5. A uniform distribution device for a cooling tower according to claim 1, characterized in that: The water distribution plate (4) is provided with a displacement portion (24) at each end.

6. A uniform distribution device for a cooling tower according to claim 1, characterized in that: The hole diameter of the water distribution hole (12) is the same as that of the through hole (13).

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