Drawer type water spreading device of multi-layer cross-flow cooling tower

Abstract

The utility model discloses a multi-layer cross-flow cooling tower drawer type water spreading device which comprises a tower body, an upper layer water spreading disc, a ventilation channel, a water receiving basin and a lower layer water spreading disc unit, the lower layer water spreading disc unit is a drawer type water spreading disc unit and is arranged in the tower body, the drawer type water spreading disc unit at least comprises two layers, and the ventilation channel is communicated with the water receiving basin. Each layer is a box body formed by assembling a front panel, a rear panel, a left side plate, a right side plate and a middle side plate through screws, and a drawer type water spreading disc is embedded in the box body; a groove matched with the guide rail assembly is formed in the bottom of the drawer type water spreading disc; the guide rail assembly is composed of an upper guide rail and a lower guide rail, and the upper guide rail and the lower guide rail are interactively matched with limiting sliding rails arranged on the left side plate, the right side plate and the middle side plate. And a variable flow spray head module is arranged at the bottom of the drawer type water spreading disc. The drawer type water spreading disc is fixed through the detachable side plates and the bolts, the requirements of different floor heights are met, and the installation complexity is reduced; the variable-flow nozzles can be independently adjusted according to the cooling requirements of all layers, and the energy efficiency is improved; the multi-guide-rail system ensures that the drawer is pulled smoothly, and clamping stagnation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower technology, and in particular to a drawer-type water tray maintenance structure for cooling towers used in multi-layer water distribution systems. Background Technology

[0002] The existing multi-layer water distribution system requires the front panel of the water distribution tray to be removed for cleaning, maintenance, or replacement of the water distribution tray and nozzles. This process is very troublesome, and the results are not always clean and the effect is not good. In particular, some larger cooling towers use heat sinks with a length of more than 1.3m, meaning the water distribution tray must also be more than 1.3m deep. In this case, it is not possible to reach it by hand, and tools are required, making the operation very difficult, time-consuming, labor-intensive, and increasing costs.

[0003] Multi-layer water distribution systems achieve a compact design through the alternating arrangement of upper and lower water distribution trays and fillers, but nozzle maintenance requires disassembling multiple layers, making the operation cumbersome and space-constrained. Although patent (CN 221924756U) proposes a drawer-type water distribution tray structure (such as...) Figure 1 As shown in the figure, its working process is as follows: the water pump draws water from the main unit after heat exchange into the tower through the inlet, and then into the upper water distribution tray 1 and the lower water distribution tray 3 respectively. The water entering the upper water distribution tray 1 is sprayed onto the upper packing 2 through the nozzle, and then flows into the upper water receiving basin 5, and then into the water tank through the upper water outlet pipe 6. The water entering the lower water distribution tray 3 is sprayed onto the lower packing 4 through the nozzle, and then flows into the water tank, and finally flows out through the outlet. However, its design is aimed at single-layer crossflow cooling towers and does not address the collaborative maintenance of multi-layer systems or the function of nozzle flow regulation. It is only applicable to single-layer water trays and has a simple guide rail structure. While the structure works fine during operation, over time, the cooling tower exchanges heat with water by drawing air into the tower. Similarly, dust from the atmosphere enters the tower and mixes with the water, causing water quality deterioration and dust accumulation. This can lead to nozzle blockage or damage, requiring cleaning or maintenance. Since the second-layer water tray is sandwiched between the upper and lower packing, cleaning or maintenance becomes difficult (the second-layer water tray must be disassembled), making maintenance cumbersome and time-consuming. Furthermore, the nozzle fixing method makes quick disassembly and assembly difficult, failing to meet the high-efficiency maintenance requirements of multi-layer cooling towers. In addition, the existing structure uses integrated guide rails and fixed end caps, resulting in low modularity and an inability to adapt to flexible installation requirements of different floor heights. It also fails to address the collaborative layout of drawer structures in multi-layer systems, the adaptability of variable flow nozzles, and the dynamic coordination with the packing layer. Moreover, in existing technology, nozzle maintenance still requires shutdown and disassembly, affecting cooling efficiency. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a drawer-type water distribution device for multi-layer crossflow cooling towers. This device achieves independent maintenance of the water distribution trays of each layer of the multi-layer cooling tower through an independently pull-out stacked drawer design, a quick-release variable flow nozzle module, and a multi-rail guiding device, and improves the precision of nozzle adjustment and sealing performance.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A multi-layer crossflow cooling tower drawer-type water distribution device includes:

[0007] It includes the tower body, upper water distribution tray, ventilation duct, water receiving basin, and lower water distribution tray unit.

[0008] The lower water distribution tray unit is a drawer-type water distribution tray unit and is installed inside the tower. The drawer-type water distribution tray unit includes at least two layers. Each layer is assembled into a box by screws using front and rear panels, left and right side panels and middle side panel. The drawer-type water distribution tray is embedded in the box.

[0009] The bottom of the drawer-type water tray is provided with a groove matching the guide rail assembly; the guide rail assembly consists of an upper guide rail and a lower guide rail, and the upper and lower guide rails interact and cooperate with the limiting slide rails provided on the left and right side plates and the middle side plate;

[0010] The drawer-type water distribution tray is equipped with a variable flow nozzle module at the bottom.

[0011] The box is surrounded by double-layer silicone sealing gaskets. The front end is fixed to the tower body by a magnetic lock, and the rear end is pressed and sealed by a rotating buckle.

[0012] The inner sides of the left and right side plates and the middle side plate are provided with guide ribs.

[0013] A first gap is reserved between the front and rear panels and the inner wall of the tower, and a second gap is reserved between the left and right side panels and the guide rail assembly.

[0014] The variable flow nozzle module adjusts according to different water flow rates, i.e., water pressure changes, and sprays water evenly onto the heat dissipation packing through the evenly distributed shower head at different flow rates.

[0015] The guide rib has a clearance of 1-3mm with the grooved guide rail of the tower body, and the contact surface is coated with a self-lubricating and wear-resistant coating.

[0016] The bottom of the tower is equipped with a water collection tank with a filter screen and an inclined guide plate. The water collection tank is equipped with a filter screen with a mesh diameter of ≤1mm to intercept impurities and prevent nozzle clogging. The inclined guide plate has an inclination angle of 15°-25°.

[0017] An upper layer of packing material is installed below the upper water distribution tray, and a lower layer of packing material is installed below the lower water distribution tray. The lower layer of packing material is a modular and detachable structure.

[0018] Compared with the prior art, one or more embodiments of this utility model may have the following advantages:

[0019] The drawer-type water tray is fixed with detachable side panels and bolts to adapt to different floor height requirements and reduce installation complexity; the variable flow nozzles can be independently adjusted for the cooling needs of each floor, improving energy efficiency; the multi-rail system ensures smooth drawer operation and avoids jamming; the use of guide ribs, clearance fit and wear-resistant coating significantly improves precision and durability compared to existing technologies; the double sealing structure reduces cooling water leakage and extends equipment life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the existing technology structure;

[0021] Figure 2 This is a schematic diagram of the overall structure of the drawer-type water distribution device for a multi-layer crossflow cooling tower.

[0022] Figure 3 This is a schematic diagram of the cooling tower water tray structure of a drawer-type multi-spread water system;

[0023] Figure 4 This is an exploded view of the cooling tower water tray structure of a drawer-type multi-spindle water system;

[0024] In the diagram: 1-Upper water tray, 2-Upper packing material, 3-Lower water tray, 4-Lower packing material, 5-Upper water inlet pipe, 6-Upper outlet pipe, 9-Middle side plate of water tray, 10-Screw, 21-Front panel of water tray, 22-Rear panel of water tray, 23-Left side plate of water tray, 24-Right side plate of water tray, 26-Variable flow nozzle, 27-Upper guide rail, 28-Lower guide rail. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0026] like Figures 2-4 As shown, a multi-layer crossflow cooling tower drawer-type water distribution device includes a tower body, an upper water distribution tray, a ventilation pipe, a water receiving pipe, and a water distribution tray unit. The lower water distribution tray unit is a drawer-type water distribution tray unit and is installed inside the tower body. The drawer-type water distribution tray unit includes at least two layers. Each layer is assembled into a box by front and rear panels 21, 22, left and right side panels 23, 24, and middle side panel 9 using screws 10. The drawer-type water distribution tray is embedded in the box.

[0027] The bottom of the drawer-type water tray is provided with a groove matching the guide rail assembly; the guide rail assembly consists of an upper guide rail 27 and a lower guide rail 28, and the upper guide rail 27 and the lower guide rail 28 interact with the limiting slide rails provided on the left and right side plates 23, 24 and the middle side plate 9.

[0028] The bottom of the drawer-type water tray is equipped with a variable flow nozzle module 26. The front and rear side panels limit the depth of the water tray when it enters and exits, the left and right side panels limit the left and right deviation of the water tray when it enters and exits, and the upper and lower guide rails limit the up and down deviation when it enters and exits. A certain gap is maintained between the water tray and the left and right side panels and the upper and lower guide rails to ensure that the water tray can smoothly enter and exit the box.

[0029] The box is surrounded by double-layer silicone sealing gaskets. The front end is fixed to the tower body by a magnetic lock, and the rear end is pressed and sealed by a rotating buckle.

[0030] The inner sides of the left and right side plates 23 and 24 and the middle side plate 9 are provided with guide ribs.

[0031] A first gap is reserved between the front and rear panels 21 and 22 and the inner wall of the tower body, and a second gap is reserved between the left and right side panels 23 and 24 and the guide rail assembly.

[0032] The variable flow nozzle module's variable flow nozzles are adjusted according to different water flow rates, i.e., water pressure changes. At different flow rates, water is evenly sprayed onto the heat dissipation packing through the evenly distributed shower head.

[0033] The guide rib and the groove guide rail of the tower body have a clearance of 1-3mm, and the contact surface is coated with a self-lubricating and wear-resistant coating to ensure smooth pulling and prevent deviation.

[0034] The bottom of the tower is equipped with a water collection tank with a filter screen and an inclined guide plate. The water collection tank is equipped with a filter screen with a mesh diameter of ≤1mm to intercept impurities and prevent nozzle clogging. The inclined guide plate has an inclination angle of 15°-25°.

[0035] An upper layer packing material 2 is installed below the upper water distribution tray 1, and a lower layer packing material 4 is installed below the lower water distribution tray 3. The lower layer packing material 4 is a modular and detachable structure.

[0036] During assembly, the left side panel 23 is fixed to the left side of the front panel 21 and the rear panel 22 with screws 10, the right side panel 24 is fixed to the right side of the front panel 21 and the rear panel 22 with screws 10, and the middle side panel 9 is fixed to the middle of the front panel 21 and the rear panel 22 with screws 10. This forms a basic water tray structure. Then, the upper guide rail 27 and the lower guide rail 28 are fixed to the upper and lower screw holes of the left, middle, and right side panels with screws 10 respectively. This forms a closed cavity for installing the drawer-type water tray and restricts the drawer-type water tray to enter and exit only within this cavity. When cleaning or replacing the spray head, the drawer-type water tray is pulled out, the spray head is removed for cleaning or replacement, and then the spray head is reinstalled. Finally, the drawer-type water tray is pushed back into the cavity.

[0037] The above embodiments are easy to maintain. The lower drawer-type water tray can be pulled out directly from the side of the tower without disassembling the upper structure, which greatly shortens the maintenance time. The structure is stable, and the matching design of the guide rail and the limit gap ensures a smooth pulling process and avoids the water tray from shifting or getting stuck. It is space adaptable and suitable for narrow installation environments of multi-layer water distribution systems, solving the problem of insufficient maintenance space in traditional multi-layer towers. It also reduces manual disassembly costs, extends the service life of the nozzles, and reduces the operation and maintenance costs of the cooling tower.

[0038] Although the embodiments disclosed in this utility model are as described above, the content described is merely for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this utility model, but the patent protection scope of this utility model shall still be determined by the scope defined in the appended claims.

Claims

1. A multi-layer cross-flow cooling tower drawer type water distribution device, comprising a tower body, an upper water distribution tray, a ventilation channel, a water receiving basin and a lower water distribution tray unit, characterized in that, the lower water distribution tray unit is a drawer type water distribution tray unit and is arranged in the tower body, the drawer type water distribution tray unit comprises at least two layers, each layer is assembled into a box body by front and rear panels (21, 22), left and right side plates (23, 24) and a middle side plate (9) through screws (10), and a drawer type water distribution tray is embedded in the box body; a groove matched with a guide rail assembly is arranged at the bottom of the drawer type water distribution tray; the guide rail assembly is composed of an upper guide rail (27) and a lower guide rail (28), the upper guide rail (27) and the lower guide rail (28) are interactively matched with the limiting slide rails arranged on the left and right side plates (23, 24) and the middle side plate (9); a variable flow rate spray head module (26) is arranged at the bottom of the drawer type water distribution tray.

2. The multi-story crossflow cooling tower drawer-type water distribution device according to claim 1, characterized in that, double-layer silica gel sealing pads are arranged around the box body, the front end is fixed to the tower body through a magnetic lock, and the rear end is tightly sealed through a rotating buckle.

3. The multi-story crossflow cooling tower drawer-type water distribution device according to claim 1, characterized in that, guide protrusions are arranged on the inner sides of the left and right side plates (23, 24) and the middle side plate (9).

4. The multi-story crossflow cooling tower drawer-type water distribution device, according to claim 1, wherein, a first gap is reserved between the front and rear panels (21, 22) and the inner wall of the tower body, and a second gap is reserved between the left and right side plates (23, 24) and the guide rail assembly.

5. The multi-story crossflow cooling tower drawer-type water distribution device, according to claim 1, wherein, The variable flow rate spray head module (26) adjusts according to different water flow rates, i.e. water pressure changes, and uniformly sprays water onto the heat dissipation filler through an evenly distributed shower tray under different flow rates.

6. The multi-story crossflow cooling tower drawer-type water distribution device, according to claim 3, wherein, The gap between the guide protrusions and the groove guide rail of the tower body is 1-3 mm, and the contact surface is coated with a self-lubricating wear-resistant coating.

7. The multi-story crossflow cooling tower drawer-type water distribution device, according to claim 1, wherein, A water collecting tank with a filter screen and an inclined guide plate are arranged at the bottom of the tower body, the filter screen is arranged in the water collecting tank, the mesh diameter is ≤1 mm, impurities are intercepted to avoid clogging of the spray head, and the inclination angle of the inclined guide plate is 15°-25°.

8. The multi-story crossflow cooling tower drawer-type water distribution device, according to claim 1, wherein, An upper filler (2) is arranged below the upper water distribution tray (1), a lower filler (4) is arranged below the lower water distribution tray (3), and the lower filler (4) is arranged in a modular and detachable structure.

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