A kind of foreign matter prevention grid structure for air inlet of cooling tower of thermal power plant

Abstract

The utility model relates to a cooling tower technical field especially relates to a prevent foreign matter grid structure for cooling tower air inlet of thermal power plant, its technical scheme includes tower body and pontoon, the inside water room of tower body lower extreme is provided with, the inside water room is suspended with pontoon, the inside embedding of tower body is installed with the slide sleeve one of annular array distribution, the upper end side of pontoon is provided with the guide rod of annular array distribution and slidingly inserted in the inside slide sleeve one and presents n type, the air inlet of annular array distribution is seted up in the tower body outer wall, the inside grid of air inlet is provided with, the guide rod is located the one end of tower body outside and is provided with the brush plate no.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower technology, and in particular to a foreign object prevention grille structure for the air inlet of a cooling tower in a thermal power plant. Background Technology

[0002] A thermal power plant is a factory that generates heat energy by burning fuels such as coal, natural gas, and fuel oil, and converts it into electrical energy through a thermal cycle (boiler → steam turbine → generator). In the power generation cycle, the cooling water after the steam is condensed is cooled by a cooling tower to achieve water resource recycling.

[0003] The bottom of the cooling tower has a ring-shaped air inlet. Air needs to be continuous to ensure heat exchange efficiency. To prevent foreign objects such as leaves, branches, catkins, dust, birds, small animals, plastic film, packaging bags, and construction debris from entering the cooling tower through the air inlet, grilles are used for interception. Although fine grilles have a good interception effect, they are easily blocked by catkins and dead leaves, requiring frequent manual cleaning. Therefore, we propose a foreign object-proof grille structure for the air inlet of cooling towers in thermal power plants to solve the existing problems. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a foreign object prevention grille structure for the air inlet of a cooling tower in a thermal power plant.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a foreign object prevention grid structure for the air inlet of a cooling tower in a thermal power plant, comprising a tower body and a floating platform. A water chamber is provided inside the lower end of the tower body, and a floating platform is suspended inside the water chamber. A sliding sleeve arranged in a circular array is embedded inside the tower body. A guide rod arranged in a circular array and slidably inserted into the sliding sleeve in an n-shape is provided on the upper side of the floating platform. An air inlet arranged in a circular array is provided on the outer wall of the tower body, and a grid is provided inside the air inlet. A brush plate located on one side of the grid is provided at one end of the guide rod on the outer side of the tower body, and a brush that fits against the grid is provided on the inner wall of the brush plate.

[0006] Preferably, a counterweight is provided at the lower end of the floating platform, and the weight of the counterweight is less than the buoyancy of the floating platform. The counterweight increases the weight of the floating platform, preventing the brush from overcoming the force of the floating platform's descent when it contacts the grid, thus allowing the brush to effectively brush the grid.

[0007] Preferably, a drain pipe penetrating the water chamber is provided at one end of the tower body, and a filter screen is provided at one end of the drain pipe. The cooling water collected inside the water chamber is output through the drain pipe.

[0008] Preferably, a side rod is provided at one end of the floating platform, and a second brush plate is provided at the lower end of the side rod. The inner wall of the second brush plate is provided with a second brush corresponding to the filter screen. The side rod slides longitudinally inside the tower body along with the floating platform, driving the first brush plate and the first brush to move longitudinally, scraping the filter screen and preventing it from becoming clogged.

[0009] Preferably, the upper outer wall of the guide rod is fitted with a telescopic sleeve that connects to the outer wall of the tower body. During the extension and retraction of the guide rod, the telescopic sleeve moves longitudinally to shield the section of the guide rod that enters the tower body, preventing dust from entering.

[0010] Preferably, the inner wall of the air intake is provided with a support strip, and one end of the support strip is provided with a rubber pad. The support strip supports one end of the grille, and the grille is effectively supported when installed inside the air intake.

[0011] Preferably, the outer wall of the tower body is provided with a bracket located at the air inlet. A sliding sleeve two is embedded inside the bracket, and a sliding rod is slidably inserted inside the sliding sleeve two. One end of the sliding rod is provided with a pressure rod, and the other end of the pressure rod is provided with a pressure ball that fits against the outer wall of the grille. The bracket provides sliding support for the guide rod through the sliding sleeve two, and presses the outer wall of the grille by moving the linkage pressure rod and pressure ball.

[0012] Preferably, a handle is provided at one end of the pressure rod, a support block is provided at one end of the guide rod, and a spring is provided at one end of the support block, which is sleeved on the outside of the slide rod and connected to the support block and the bracket at both ends respectively. The movement of the slide rod and the pressure rod is achieved by gripping the handle, and the support block applies the elastic force of the spring to the slide rod and the pressure rod, thereby providing elastic support to the pressure rod and elastically pressing the grid.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. In this utility model, the cooling water droplets in the tower body are collected inside the water chamber. The grille is located inside the air inlet to intercept foreign objects. A floating platform is installed inside the water chamber and is suspended on the water surface. A guide rod with a circular array is installed on the upper part of the floating platform and moves longitudinally synchronously with the floating platform. In conjunction with the brush plate and brush at the lower end of the guide rod, since the brush corresponds to the grille, the water level inside the water chamber is controlled during the use of the grille. The flow rate delivered inside the water chamber is controlled so that the brush plate drives the brush to move longitudinally repeatedly, automatically cleaning the grille. This avoids manual cleaning and avoids additional power consumption during the cleaning process. The cleaning is convenient and low-cost. Attached Figure Description

[0015] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a top sectional view of the three-dimensional structure of this utility model;

[0017] Figure 3 This is a partial main sectional view of the three-dimensional structure of the tower body of this utility model;

[0018] Figure 4 For the present utility model Figure 3 Side view of the three-dimensional structure;

[0019] Figure 5 This is a top-view three-dimensional structural diagram of the bracket of this utility model.

[0020] Reference numerals in the attached diagram: 1. Tower body; 2. Guide rod; 3. Grille; 4. Drain pipe; 5. Air inlet; 6. Floating platform; 7. Telescopic sleeve; 8. Sliding sleeve one; 9. Support bar; 10. Brush plate one; 11. Filter screen; 12. Water chamber; 13. Counterweight block; 14. Brush; 15. Pressure rod; 16. Pressure ball; 17. Sliding sleeve two; 18. Handle; 19. Bracket; 20. Sliding rod; 21. Spring; 22. Support block; 23. Side rod; 24. Brush plate two. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0022] like Figures 1-5 As shown, the present invention proposes a foreign object prevention grid structure for the air inlet of a cooling tower in a thermal power plant, including a tower body 1 and a floating platform 6. A water chamber 12 is provided inside the lower end of the tower body 1, and the floating platform 6 is suspended inside the water chamber 12. A sliding sleeve 8 arranged in a ring array is embedded inside the tower body 1. A guide rod 2 arranged in a ring array and slidably inserted into the sliding sleeve 8 and in an n-shape is provided on the upper side of the floating platform 6. An air inlet 5 arranged in a ring array is opened on the outer wall of the tower body 1. A grid 3 is provided inside the air inlet 5. A brush plate 10 located on one side of the grid 3 is provided at one end of the guide rod 2 on the outer side of the tower body 1. A brush 14 that fits into the grid 3 is provided on the inner wall of the brush plate 10.

[0023] A counterweight 13 is provided at the lower end of the floating platform 6. The weight of the counterweight 13 is less than the buoyancy of the floating platform 6.

[0024] A drain pipe 4 that penetrates the water chamber 12 is provided at one end of the tower body 1, and a filter screen 11 is provided at one end of the drain pipe 4;

[0025] A side rod 23 is provided at one end of the floating platform 6, and a brush plate 24 is provided at the lower end of the side rod 23. The inner wall of the brush plate 24 is provided with a brush 14 corresponding to the filter screen 11.

[0026] The upper outer wall of the guide rod 2 is fitted with a telescopic sleeve 7 that is connected to the outer wall of the tower body 1;

[0027] The inner wall of the air inlet 5 is provided with a support strip 9, and a rubber pad is provided at one end of the support strip 9;

[0028] The outer wall of the tower body 1 is provided with a bracket 19 located at the air inlet 5. A sliding sleeve 17 is embedded inside the bracket 19. A sliding rod 20 is slidably inserted inside the sliding sleeve 17. A pressure rod 15 is provided at one end of the sliding rod 20. A pressure ball 16 that fits against the outer wall of the grille 3 is provided at the other end of the pressure rod 15.

[0029] One end of the pressure rod 15 is provided with a handle 18, and one end of the guide rod 2 is provided with a support block 22. One end of the support block 22 is provided with a spring 21 that is sleeved on the outside of the slide rod 20 and connected to the support block 22 and the bracket 19 at both ends respectively.

[0030] Based on the implementation steps of Example 1: The cooling tower bottom water chamber 12 collects the falling cooling water, the floating platform 6 moves longitudinally with the rise and fall of the water level, the counterweight 13 precisely controls the buoyancy, the floating platform 6 drives the ring-shaped guide rod 2 to slide along the sliding sleeve 8, the brush plate 10 connected to the outer end of the guide rod 2 moves synchronously, the brush 14 repeatedly scrapes the surface of the grid 3, the longitudinal stroke covers the entire height of the grid 3, and removes the clogging materials such as willow catkins and dead leaves, the brush 14 scrapes off the impurities on the surface of the drain pipe 4 filter screen 11, so as to avoid the filter screen 11 from being blocked and affecting the drainage efficiency;

[0031] Manually pulling the handle 18 pushes the pressure rod 15 via the slide rod 20 supported by the spring 21. The pressure ball 16 at the end of the pressure rod 15 elastically presses the outer wall of the grid 3, vibrating the grid 3 to shake off accumulated dust and reduce blockage. The guide rod 2 is covered with a telescopic sleeve 7 to prevent dust from entering the tower body 1. The support bar 9 and the rubber pad form a flexible support base for the grid 3, which buffers the impact of airflow. The fine grid 3 is clogged with lint and needs to be manually cleaned every week. The brush 14 moves longitudinally, unlike the traditional static scraper, to completely remove the attached substances. The floating platform 6 is linked to the water level change to achieve all-weather adaptive cleaning.

[0032] The clean power system relies entirely on the natural fluctuations in the cooling water level, requiring no electricity, thus reducing energy consumption and operating costs. In winter, manually pulling the handle 18 uses the elastic force of the spring 21 to drive the pressure ball 16 to crush the ice layer. The replacement of the brush 14 can be done without stopping the machine, reducing maintenance costs. The primary interception of the grille 3 and the secondary fine filtration of the filter screen 11 form a double barrier. The telescopic sleeve 7 protects the guide rod 2, preventing sand and dust from entering and causing blockage. This solves the vicious cycle of the traditional grille 3 becoming more clogged the denser it is, and the more clogged it is, the more energy it consumes. It provides maintenance-free and highly reliable air intake protection for the cooling system of thermal power plants.

[0033] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A foreign object prevention grille structure for the air inlet of a cooling tower in a thermal power plant, comprising a tower body (1) and a floating platform (6), characterized in that: The lower end of the tower body (1) is provided with a water chamber (12), and a floating platform (6) is suspended inside the water chamber (12). A sliding sleeve (8) arranged in a ring array is embedded inside the tower body (1). A guide rod (2) arranged in a ring array and slidably inserted into the sliding sleeve (8) and in an n-shape is provided on the upper side of the floating platform (6). An air inlet (5) arranged in a ring array is provided on the outer wall of the tower body (1). A grid (3) is provided inside the air inlet (5). A brush plate (10) located on one side of the grid (3) is provided on one end of the guide rod (2) on the outside of the tower body (1). A brush (14) that fits against the grid (3) is provided on the inner wall of the brush plate (10).

2. The foreign object prevention grille structure for the air inlet of a cooling tower in a thermal power plant according to claim 1, characterized in that: A counterweight (13) is provided at the lower end of the floating platform (6), and the weight of the counterweight (13) is less than the buoyancy of the floating platform (6).

3. The foreign object prevention grille structure for the air inlet of a cooling tower in a thermal power plant according to claim 1, characterized in that: One end of the tower body (1) is provided with a drain pipe (4) that penetrates the water chamber (12), and one end of the drain pipe (4) is provided with a filter screen (11).

4. The foreign object prevention grille structure for the air inlet of a cooling tower in a thermal power plant according to claim 3, characterized in that: One end of the floating platform (6) is provided with a side rod (23), and the lower end of the side rod (23) is provided with a brush plate (24). The inner wall of the brush plate (24) is provided with a brush (14) corresponding to the filter screen (11).

5. The anti-foreign object grille structure for the air inlet of a cooling tower in a thermal power plant according to claim 1, characterized in that: The upper outer wall of the guide rod (2) is fitted with a telescopic sleeve (7) that is connected to the outer wall of the tower body (1).

6. The anti-foreign object grille structure for the air inlet of a cooling tower in a thermal power plant according to claim 1, characterized in that: The inner wall of the air inlet (5) is provided with a support strip (9), and a rubber pad is provided at one end of the support strip (9).

7. The anti-foreign object grille structure for the air inlet of a cooling tower in a thermal power plant according to claim 1, characterized in that: The outer wall of the tower body (1) is provided with a bracket (19) located at the air inlet (5). A sliding sleeve (17) is embedded inside the bracket (19). A sliding rod (20) is slidably inserted inside the sliding sleeve (17). A pressure rod (15) is provided at one end of the sliding rod (20). A pressure ball (16) that fits against the outer wall of the grille (3) is provided at one end of the pressure rod (15).

8. The anti-foreign object grille structure for the air inlet of a cooling tower in a thermal power plant according to claim 7, characterized in that: One end of the pressure rod (15) is provided with a handle (18), one end of the guide rod (2) is provided with a support block (22), and one end of the support block (22) is provided with a spring (21) sleeved on the outside of the slide rod (20) and connected to the support block (22) and the bracket (19) at both ends respectively.

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