Multi-layer sealing and water leakage preventing center cylinder of cooling tower

Abstract

The utility model discloses a kind of cooling tower multilayer sealing water leakage prevention center cylinder, belong to cooling tower technical field, including center cylinder main body, center cylinder main body is by first bending plate and second bending plate interconnect and constitute. First bending plate is U type, and first side flange is provided in two side edges;Second bending plate is flat plate, and second side flange is provided in two side edges. First side flange and second side flange are Z type, mutually adhere to each other and be connected by bolt, and sealing layer is provided between adhering surface. The utility model solves the problems of low production efficiency, high cost, insufficient water leakage prevention ability and other problems in the prior art, realizes the manufacture of efficient, low-cost and superior water leakage prevention performance of cooling tower center cylinder.

Description

Technical Field

[0001] This utility model belongs to the field of cooling tower technology, specifically a multi-layer sealed and leak-proof central cylinder for cooling towers. Background Technology

[0002] There are two different manufacturing processes for the central cylinder of existing cooling towers:

[0003] The first type uses multiple bent parts joined together and then welded together the four vertical edges and four bottom edges. This type of welded central cylinder requires the bent materials to be welded first and then the entire central cylinder to be galvanized. The manufacturing process includes bending, welding, grinding and galvanizing, which involves many steps, high welding requirements, easy deformation, and galvanizing is not environmentally friendly.

[0004] The second method uses five bent panels. After the five panels are spliced ​​together, the four vertical edges and four bottom edges are connected with butyl tape or polyurethane adhesive and then bolted together for leak prevention. A single layer of adhesive is used for sealing. The manufacturing process involves bending, sealing, and bolting. This five-panel bending and bolting method involves more steps, more panels, more sealing edges, and a single-layer seal for leak prevention, with a central cylinder.

[0005] The present invention aims to provide a multi-layer sealed leak-proof central cylinder for cooling towers to solve the problems of low production efficiency, high cost and insufficient leak-proof capability in the prior art. Utility Model Content

[0006] To address the above problems, this utility model provides a multi-layer sealed anti-leakage central cylinder for cooling towers, which solves the problems of low production efficiency, high cost, and insufficient anti-leakage capability in the existing technology, and realizes the manufacturing of a cooling tower central cylinder with high efficiency, low cost and superior anti-leakage performance.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A multi-layer sealed, leak-proof central cylinder for cooling towers includes a central cylinder body, which is formed by the interconnection of a first bending plate and a second bending plate. The first bending plate is U-shaped with first side folds on both sides; the second bending plate is flat with second side folds on both sides. Both the first and second side folds are Z-shaped, fitted together and connected by bolts, with a sealing layer between the mating surfaces.

[0009] The beneficial effects of the above technical solution are as follows:

[0010] This structure improves the original central cylinder from five bending plates to two bending plates, and changes the bending connection from the original U-shaped structure to a Z-shaped structure, resulting in two additional sealing and leak-proof layers after docking. This not only reduces the amount of bolts used, but also significantly improves waterproofing and strength, saving costs and increasing production efficiency.

[0011] As a further improvement to the above scheme, the upper ends of the three sides of the first bending plate are provided with a first upper folded edge that bends outward; the upper end bends outward to form a second upper folded edge.

[0012] The beneficial effects of the above technical solution are as follows: by setting the first upper folding edge and the second upper folding edge, the structural strength and sealing performance of the upper part of the central cylinder are enhanced, effectively preventing liquid leakage from the upper edge, while improving the overall stability and service life.

[0013] As a further improvement to the above solution, the bottom of the second bending plate is provided with a second bottom fold, the three sides of the second bottom fold are bent on the same side, and each of the three sides is provided with a mounting hole; the three sides are respectively connected and fixed to the first bottom fold of the first bending plate and the side wall of the first bending plate by bolts.

[0014] The beneficial effects of the above technical solution are as follows: This bottom folding and connection method makes the bottom connection of the central cylinder more firm and reliable, the setting of the mounting hole facilitates the connection and fixation with the external structure, improves the overall assembly efficiency and stability, further enhances the water-proof performance, and ensures the sealing and reliability of the central cylinder during use.

[0015] As a further improvement to the above solution, the sealing layer has two layers: butyl tape and polyurethane adhesive layer.

[0016] The beneficial effects of the above technical solution are as follows: the double-layer sealing structure, with butyl tape and polyurethane adhesive layer working together, forms a more effective sealing effect, effectively preventing liquid leakage, greatly improving the waterproof performance of the central cylinder, extending its service life, reducing maintenance costs, and ensuring the normal operation and reliability of the cooling tower system.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This utility model improves upon the original five-bending plate design of the central cylinder by reducing it to two bending plates, and changes the bending connection from a U-shaped structure to a Z-shaped structure. This results in two additional sealing and leak-proof layers after the joint is connected, which not only reduces the amount of bolts used, but also significantly improves the waterproofing ability and strength, saving costs and increasing production efficiency. Attached Figure Description

[0019] Figure 1 Schematic diagram of the overall structure of the multi-layer sealing and leak-proof central cylinder of the cooling tower;

[0020] Figure 2 : Schematic diagram of the first bending plate structure;

[0021] Figure 3 : Schematic diagram of the second bending plate structure;

[0022] Figure 4 : Central cylinder sectional view;

[0023] Figure 5 : Figure 4 Enlarged view of part A.

[0024] In the diagram: 1. First bending plate; 2. Second bending plate; 3. Water outlet flange; 4. Drain outlet; 11. First upper fold; 12. First side fold; 13. First bottom fold; 21. Second bottom fold; 22. Second side fold; 23. Second upper fold. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution, the present invention will be described in detail below with reference to the embodiments. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0026] This embodiment provides a multi-layer sealed leak-proof central cylinder for cooling towers, suitable for counter-flow circular cooling towers. The central cylinder consists of two bent plates: a U-shaped first bent plate 1 and a flat second bent plate 2. The first bent plate 1 has first side flanges 12 on both sides, and the second bent plate 2 has second side flanges 22 on both sides. Both the first side flanges 12 and the second side flanges 22 are Z-shaped. The Z-shaped flanges are fitted together and connected by M10×30mm high-strength bolts, with a sealing layer between the mating surfaces. The sealing layer includes an inner butyl tape layer and an outer polyurethane adhesive layer.

[0027] In addition, a water outlet flange 3 and a drain outlet 4 are bolted to the back of the first bending plate 1.

[0028] Production process:

[0029] 1. Material Preparation: 2mm thick Q235B carbon steel plate is selected as the bending plate material. This material has good mechanical and weldability, which can meet the requirements of cooling tower use.

[0030] 2. Bending and Forming: The steel plate is bent into a first bent plate (U-shaped) and a second bent plate (flat). A CNC bending machine is used during bending to ensure the accuracy of the bending angle and dimensions. The dimensions of the U-shaped section of the first bent plate are: height 500mm, width 600mm, and the length of the straight bottom section is 400mm. The dimensions of the second bent plate are: height 500mm and width 600mm.

[0031] 3. Hemming process: Hem the two sides of the first bending plate to form Z-shaped first side hems. The hemming dimensions are as follows: the horizontal segment length is 30 mm, the vertical segment length is 20 mm, and the inclined segment angle is 30°. Similarly, hem the two sides of the second bending plate to form Z-shaped second side hems with the same dimensions as the first side hems.

[0032] 4. Sealing layer setting: First, paste a layer of butyl tape with a thickness of 2 mm on the mating surfaces of the first side hems and the second side hems, and then coat a layer of polyurethane glue layer with a thickness of 1 mm on the outside.

[0033] 5. Assembly and connection: Fit the Z-shaped hems of the first bending plate and the second bending plate together to make the butyl tape and the polyurethane glue layer fit tightly. Then connect them with high-strength bolts of M10×30 mm, and the bolt spacing is 150 mm. On the upper ends of the three surfaces of the first bending plate, set first upper hems bent outward. The hemming dimensions are as follows: the horizontal segment length is 40 mm, the vertical segment length is 20 mm, and the inclined segment angle is 45°. At the same time, bend the upper end of the second bending plate outward to form a second upper hem with the same dimensions as the first upper hem. Set a second bottom hem at the bottom of the second bending plate. The three sides of the second bottom hem are bent on the same side. The hemming dimensions are as follows: the horizontal segment length is 30 mm, the vertical segment length is 20 mm, and the inclined segment angle is 30°. Installation holes with a diameter of 11 mm are provided on all three sides for connecting and fixing with the first bottom hem and the side wall of the first bending plate through bolts.

[0034] Installation and commissioning:

[0035] 1. Determination of installation position: According to the design drawings of the cooling tower, determine the installation position of the central cylinder. Ensure that the center line of the central cylinder coincides with the center line of the cooling tower, and the allowable deviation is ±2 mm.

[0036] 2. Connection with the cooling tower body: Connect the bottom of the central cylinder with the tower bottom of the cooling tower with bolts of M12×40 mm, and the bolt spacing is 200 mm. At the same time, connect the upper part of the central cylinder with the water distribution system of the cooling tower with bolts of M10×30 mm, and the bolt spacing is 150 mm.

[0037] 3. Sealing performance inspection: After the installation of the central cylinder is completed, conduct a sealing performance inspection. Inject clear water into the central cylinder, and the water level height is 400 mm, and keep it for 24 hours. Observe whether there is any water leakage at each connection part of the central cylinder. If there is no water leakage, the sealing performance is qualified.

[0038] Effect verification:

[0039] In practical applications, the multi-layer sealed leak-proof central cylinder of this cooling tower showed no leakage during operation, demonstrating excellent sealing performance. Compared to traditional welded central cylinders, it reduces welding processes, lowers production costs, and improves production efficiency. Simultaneously, the multi-layer sealing structure effectively enhances leak-proof capability and extends the service life of the central cylinder.

[0040] It should be noted that, in this document, the terms "comprising," "including," and any other variations 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. Specific examples have been used in this document to illustrate the principles and implementation methods of the present invention. These examples are merely for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be pointed out that, due to the limitations of written expression and the objective existence of infinite specific structures, those skilled in the art can make several improvements, modifications, or variations without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the concept and technical solution of the present invention to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A multi-layer sealed, leak-proof central cylinder for a cooling tower, characterized in that: It includes a central cylinder body formed by the interconnection of a first bending plate (1) and a second bending plate (2); The first bending plate (1) is U-shaped, and first side folds (12) are provided on both sides; The second bending plate (2) is flat and has second side folds (22) on both sides; Both the first side fold (12) and the second side fold (22) are Z-shaped; The first side fold (12) and the second side fold (22) are fitted together and connected by bolts, and a sealing layer is provided between the mating surfaces.

2. The multi-layer sealed leak-proof central cylinder for a cooling tower according to claim 1, characterized in that, The first bending plate (1) has a first upper folded edge (11) that bends outward at the upper end of its three sides; the upper end bends outward to form a second upper folded edge (23).

3. The multi-layer sealed leak-proof central cylinder for a cooling tower according to claim 1, characterized in that, The second bending plate (2) has a second bottom fold (21) at the bottom. The three sides of the second bottom fold (21) are bent on the same side, and each of the three sides has a mounting hole. The three sides are respectively connected and fixed to the first bottom fold (13) of the first bending plate (1) and the side wall of the first bending plate (1) by bolts.

4. The multi-layer sealed leak-proof central cylinder for a cooling tower according to claim 1, characterized in that: The sealing layer has two layers: butyl tape and polyurethane adhesive layer.

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