A wind blocking and adjusting structure for a cooling tower of a thermal power plant

Abstract

The utility model relates to a cooling tower technical field especially is a kind of windbreak adjusting structure for cooling tower of thermal power plant, including windbreak mechanism and for, windbreak mechanism includes: main component, including the frame of being set in cooling tower air inlet;Execution component, including the vane component of being set in the inside of frame, vane component one end is provided with support rod, and the side of frame is provided with connecting rod, and connecting rod and support rod are hinged;Driving assembly, set in the side of frame and for controlling vane component rotation;The vane component includes the equal interval distribution of several louvers that are rotatably installed in the inside of frame, and the recess is set in the bottom of front end and the top of rear end of louvers, and sealing strip is fixed in recess;Through hand wheel drive worm gear mechanism linkage control louvers synchronous opening and closing, realize air intake accurate regulation, improve cooling efficiency and prevent icing;When closing, sealing strip and fender form double seal, ensure excellent air tightness, adapt to different working condition demand.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower technology, specifically to a windbreak adjustment structure for cooling towers in thermal power plants. Background Technology

[0002] As a crucial piece of equipment in the thermal power plant's cooling system, the cooling efficiency of the cooling tower directly impacts the economic efficiency and safety of the unit's operation. During the operation of a natural draft cooling tower, changes in environmental parameters such as wind speed and temperature can cause fluctuations in the air intake, thereby affecting the cooling effect.

[0003] According to CN210892770U, a windbreak device for a cooling tower in a thermal power plant is disclosed. This technology discloses "a windbreak device for a cooling tower in a thermal power plant, including a frame, a first connecting plate fixedly connected to the left side of the top of the frame, a second connecting plate fixedly connected to the right side of the top of the frame, a short rod penetrating through the left side of the first connecting plate, the right end of the short rod penetrating through the first connecting plate and fixedly connected to a winding roller, the right side of the winding roller being movably connected to the left side of the second connecting plate via a rotating shaft, a windbreak cloth being wound around the surface of the winding roller, a rectangular hole being opened at the top of the frame, and sliding grooves being opened on both sides of the inner cavity of the frame." This technology has the advantage of "not requiring disassembly of the windbreak plate, solving the problem that when using a straight-plate suspended windbreak plate for antifreeze and adjusting the inlet temperature of circulating water, after installing the windbreak plate, it is necessary to frequently disassemble and reassemble the windbreak plate to adjust the circulating water temperature and improve the unit vacuum, resulting in a large workload, long working time, and difficulty in effectively controlling the circulating water temperature."

[0004] Existing cooling tower wind deflectors in thermal power plants mainly adopt integral wind deflectors or single large louvered structures. This design has obvious limitations in adjustment. When it is necessary to adjust the air intake, the entire wind deflector can only be opened or closed uniformly, and it is impossible to achieve fine-grained adjustment by zone, resulting in uneven airflow distribution inside the cooling tower. Especially when operating at partial load or responding to sudden weather changes, this single plate structure is difficult to respond quickly to changes in cooling demand in different areas, which can easily cause local overcooling or uneven heat exchange within the tower. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a windbreak adjustment structure for cooling towers in thermal power plants. By using a handwheel to drive a worm gear mechanism to control the synchronous opening and closing of louvers, the air intake volume can be precisely adjusted, improving cooling efficiency and preventing icing. When closed, the sealing strip and the baffle strip form a double seal, ensuring excellent airtightness and adapting to different operating conditions.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a windbreak adjustment structure for a cooling tower in a thermal power plant, comprising a windbreak mechanism and used for..., the windbreak mechanism comprising:

[0007] The main components include a frame installed at the air inlet of the cooling tower;

[0008] The execution component includes a blade component disposed inside the frame, with a support rod at one end of the blade component and a connecting rod on one side of the frame, and the connecting rod is pivotally connected to the support rod.

[0009] The drive assembly is located on one side of the frame and is used to control the rotation of the blade components.

[0010] Preferably, the blade component includes a plurality of louvers that are rotatably installed inside the frame and are equidistantly distributed. The bottom of the front end and the top of the rear end of the louvers are provided with grooves, and sealing strips are fixed in the grooves.

[0011] Preferably, the drive assembly includes a flange seat fixed to the outer wall of the frame, a housing fixed to the outer wall of the flange seat, a worm gear rotatably mounted inside the housing and fixed to one of the louvers, a worm rotatably mounted between the two upper ends inside the housing and meshing with the worm gear for transmission, and a handwheel fixed to the outer end of the worm.

[0012] Preferably, the main component further includes baffles fixed to the upper and lower ends inside the frame.

[0013] Preferably, the main component further includes air guide hoods fixed at the front and rear ends of the frame, with a flange ring fixed at the outer end of the air guide hood, and a plurality of circumferentially distributed waist-shaped holes opened on the inner outer edge of the flange ring.

[0014] Preferably, the surface of the louver is provided with a hydrophobic coating, and the hydrophobic coating is composed of a fluoropolymer-based composite material.

[0015] Beneficial effects

[0016] This invention provides a windbreak adjustment structure for cooling towers in thermal power plants. Compared with the prior art, it has the following advantages:

[0017] 1. By rotating the handwheel, the worm gear is driven to rotate, which in turn drives one of the louvers to rotate via the worm wheel. When one louver rotates, it drives the other support rods to rotate through the support rods and connecting rods. At the same time, the support rods drive the corresponding louvers to rotate synchronously, achieving uniform angle adjustment of all louver components. This allows for precise control of the air intake volume, which can be flexibly adjusted according to cooling requirements, significantly improving cooling efficiency. In low-temperature environments, the opening can be appropriately reduced to effectively prevent icing inside the cooling tower. In windy weather, the airflow distribution inside the tower can be balanced by adjusting the opening angle to avoid localized overcooling or uneven heat exchange. The linkage mechanism ensures synchronous operation of multiple louvers, guaranteeing uniform airflow regulation.

[0018] 2. When the louvers are rotated to the closed position, the sealing strips on the upper and lower grooves form a cross seal, effectively blocking the airflow channel; and the baffle is squeezed and deformed and forms a tight contact with the edges of the uppermost and lowermost louvers; thus improving the airtightness of the louvers in the closed state. Attached Figure Description

[0019] Figure 1 This is a frontal perspective view of the present invention.

[0020] Figure 2 This is a side perspective view of the present invention.

[0021] Figure 3 This is a cross-sectional view of the present invention;

[0022] Figure 4 This is a structural schematic diagram of the blade plate component of this utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the drive component in this utility model.

[0024] In the diagram: 1. Windshield mechanism; 11. Main component; 111. Frame; 112. Air guide hood; 113. Flange ring; 114. Waist-shaped hole; 115. Baffle strip; 12. Actuation component; 121. Blade component; 1211. Louver; 1212. Groove; 1213. Sealing strip; 122. Support rod; 123. Connecting rod; 13. Drive component; 131. Flange seat; 132. Housing; 133. Worm gear; 134. Worm; 135. Handwheel. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a windbreak adjustment structure for a cooling tower in a thermal power plant, including a windbreak mechanism 1 and used for..., the windbreak mechanism 1 includes:

[0027] The main component 11 includes a frame 111 disposed at the air inlet of the cooling tower;

[0028] The execution component 12 includes a blade component 121 disposed inside the frame 111. One end of the blade component 121 is provided with a support rod 122, and a connecting rod 123 is provided on one side of the frame 111, and the connecting rod 123 is pivotally connected to the support rod 122.

[0029] The drive assembly 13 is located on one side of the frame 111 and is used to control the rotation of the blade component 121.

[0030] In this embodiment, when one of the louvers 1211 rotates, the support rod 122, in conjunction with the connecting rod 123, drives the other support rods 122 to rotate. Simultaneously, the support rod 122 drives the corresponding louver 1211 to rotate synchronously, achieving uniform angle adjustment of all louver components 121. This precisely controls the air intake volume, allowing for flexible adjustment according to cooling requirements, significantly improving cooling efficiency. In low-temperature environments, the opening can be appropriately reduced to effectively prevent icing inside the cooling tower. During windy weather, the airflow distribution inside the tower can be balanced by adjusting the opening and closing angle, avoiding localized overcooling or uneven heat exchange. The linkage mechanism ensures synchronous operation of multiple louvers, guaranteeing uniform airflow regulation.

[0031] Specifically, the blade component 121 includes a number of louvers 1211 that are rotatably installed inside the frame 111 and are equidistantly distributed. The bottom front end and the top rear end of the louvers 1211 are provided with grooves 1212, and sealing strips 1213 are fixed in the grooves 1212.

[0032] In this embodiment, when the louvered plate 1211 is closed, the sealing strips 1213 on the upper and lower grooves 1212 form a cross seal, effectively blocking the airflow channel.

[0033] Specifically, the drive assembly 13 includes a flange seat 131 fixed to the outer wall of the frame 111, a housing 132 fixed to the outer wall of the flange seat 131, a worm gear 133 rotatably mounted inside the housing 132 and fixed to one of the louvers 1211, a worm 134 rotatably mounted between the two upper ends inside the housing 132 and meshing with the worm gear 133 for transmission, and a handwheel 135 fixed to the outer end of the worm 134.

[0034] In this embodiment, the worm gear 134 is rotated by rotating the handwheel 135, and the worm gear 134 drives one of the louvers 1211 to rotate through the worm wheel 133; the worm wheel and worm gear transmission mechanism has a self-locking characteristic, which can prevent the louvers from shifting on their own under the action of wind.

[0035] Specifically, the main component 11 also includes baffles 115 fixed inside the upper and lower ends of the frame 111.

[0036] In this embodiment, when the louver 1211 is rotated to the closed position, the baffle 115 is compressed and deformed and forms a tight contact with the edges of the uppermost and lowermost louver 1211; thus improving the airtightness of the louver 1211 in the closed state.

[0037] Specifically, the main component 11 also includes air guide shrouds 112 fixed at the front and rear ends of the frame 111. A flange ring 113 is fixed at the outer end of the air guide shroud 112, and several waist-shaped holes 114 are circumferentially distributed on the inner outer edge of the flange ring 113.

[0038] In this embodiment, the air guide shroud 112 adopts a streamlined curved surface design, and its inner wall is specially polished to reduce airflow friction resistance, which can effectively guide the airflow direction into the cooling tower and avoid turbulence and eddy currents; the waist-shaped hole 114 allows for fine-tuning and positioning during installation, compensates for dimensional deviations during manufacturing and construction, and ensures precise alignment of the entire wind deflector mechanism with the air inlet of the cooling tower.

[0039] Specifically, the surface of the louvered panel 1211 is provided with a hydrophobic coating, and the hydrophobic coating is composed of a fluoropolymer-based composite material.

[0040] In this embodiment, the probability of water film formation on the surface of the louver 1211 is significantly reduced, avoiding increased airflow resistance due to water film accumulation; preventing scale deposition and microbial growth, keeping the louver surface clean for a long time; reducing metal corrosion caused by humid environments, and extending the service life of the louver 1211.

[0041] The working principle and usage process of this utility model are as follows: First, by rotating the handwheel 135, the worm gear 134 is driven to rotate, and the worm gear 134 drives one of the louvers 1211 to rotate through the worm wheel 133. When one of the louvers 1211 rotates, the support rod 122 and the connecting rod 123 drive the other support rods 122 to rotate. At the same time, the support rods 122 drive the corresponding louvers 1211 to rotate synchronously, so as to achieve uniform adjustment of the angle of all blade components 121. The air intake volume is precisely controlled and flexibly adjusted according to the cooling demand, which significantly improves the cooling efficiency. In low temperature environments, the opening can be appropriately reduced to effectively prevent ice formation inside the cooling tower. In windy weather, the airflow distribution inside the tower can be balanced by adjusting the opening and closing angle to avoid local overcooling or uneven heat exchange. The linkage mechanism ensures that multiple blades move synchronously and ensures the uniformity of airflow adjustment.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind blocking and regulating structure for a cooling tower of a thermal power plant, characterized in that: Includes a windbreak mechanism (1) and is used for, wherein the windbreak mechanism (1) includes: The main component (11) includes a frame (111) disposed at the air inlet of the cooling tower. The execution component (12) includes a blade component (121) disposed inside the frame (111), a support rod (122) is provided at one end of the blade component (121), a connecting rod (123) is provided on one side of the frame (111), and the connecting rod (123) is pivotally connected to the support rod (122); The drive assembly (13) is located on one side of the frame (111) and is used to control the rotation of the blade component (121).

2. The wind blocking and adjusting structure for a cooling tower of a thermal power plant according to claim 1, characterized in that: The blade component (121) includes a number of louvers (1211) that are rotatably installed inside the frame (111) and are evenly distributed. The bottom front end and the top rear end of the louvers (1211) are provided with grooves (1212), and a sealing strip (1213) is fixed in the grooves (1212).

3. The wind blocking and regulating structure for a cooling tower of a thermal power plant according to claim 2, characterized in that: The drive assembly (13) includes a flange seat (131) fixed to the outer wall of the frame (111), a housing (132) fixed to the outer wall of the flange seat (131), a worm gear (133) rotatably mounted inside the housing (132) and fixed to one of the louvers (1211), a worm (134) rotatably mounted between the two ends of the upper part inside the housing (132) and meshing with the worm gear (133) for transmission, and a handwheel (135) fixed to the outer end of the worm (134).

4. The wind blocking and regulating structure for a cooling tower of a thermal power plant according to claim 1, characterized in that: The main component (11) also includes baffles (115) fixed inside the frame (111) at the upper and lower ends.

5. The wind blocking and regulating structure for a cooling tower of a thermal power plant according to claim 1, characterized in that: The main component (11) also includes air guide hoods (112) fixed at the front and rear ends of the frame (111). A flange ring (113) is fixed at the outer end of the air guide hood (112). A number of waist-shaped holes (114) are circumferentially distributed on the inner outer edge of the flange ring (113).

6. The wind blocking and regulating structure for a cooling tower of a thermal power plant according to claim 2, characterized in that: The surface of the louver (1211) is provided with a hydrophobic coating, and the hydrophobic coating is composed of a fluoropolymer-based composite material.

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