Cooling tower spiral foamed water sprinkling filler device

Abstract

The utility model relates to cooling equipment technical field discloses a kind of spiral foaming water-drenching packing devices of cooling tower, including foaming liquid generator, the top outer wall of foaming liquid generator is fixedly installed with foaming control system, the right side outer wall of foaming liquid generator is fixedly installed with motor, the right side outer wall of foaming liquid generator is fixedly installed with pre-foaming machine, the right side outer wall of pre-foaming machine is fixedly installed with heating system, the front side inner wall of heating system is fixedly installed with heating control system, the right side outer wall of heating system is fixedly installed with infusion pipeline.In the utility model, by product once forming through foaming, product specification can be designed, only need to change template or a small amount of cutting, standard product and special-shaped product that can meet engineering needs can be obtained, the large aperture foaming water-drenching packing of the utility model, its vent is spiral, the feasibility of spiral hole forming is considered when mold is designed.

Description

Technical Field

[0001] This utility model relates to the field of cooling equipment technology, and in particular to a spiral foamed water spraying packing device for cooling towers. Background Technology

[0002] In my country, since the early 1980s, wet cooling towers have gradually adopted film-type water-spraying packing made of plastic materials. A small number of them use drip-type or drip-film hybrid types, but most are film-type. Their structure is mostly composed of several corrugated single pieces combined into a unit block. The surface shape is an S-shaped wave or oblique corrugation with a certain angle. When assembling, adjacent pieces are cross-shaped with corrugations and are bonded together with adhesive to form a whole (the right figure shows a typical S-shaped assembly block assembled by adhesive).

[0003] Spiral foamed water-spraying filler devices are assembled using perforated rods, but their overall rigidity is not as good as those assembled by bonding. Currently, there are roughly two production processes for plastic water-spraying fillers: one is the compression molding process used by most manufacturers, and the other is the vacuum forming process. The compression molding process is as follows: metering formulation → mixing and kneading → plasticizing extrusion → calendering and sheet forming → cooling, shaping, and winding → secondary heating → continuous molding → fixed-length cutting → inspection, metering, and packaging. The vacuum forming process is as follows: metering formulation → mixing and kneading → plasticizing extrusion → calendering and sheet forming → cooling, shaping, and winding → secondary heating. The process from temperature control to thermoforming, inspection, measurement, and packaging shows that the sheet-making process before molding is the same for both methods. The difference lies in the molding stage, while the resulting products have essentially the same properties. The key difference is that the filler produced by compression molding has a regular shape, especially with clear edges, but its thickness is uneven; while thermoforming, using negative pressure, produces filler with uniform thickness, but its edges are not as sharp as those of compression-molded filler. However, both methods share similarities in production, transportation, installation, and use, requiring processes such as plasticizing, molding, long-distance transportation, and bonding assembly. After more than 30 years of development, the production of plastic water-spraying fillers has transformed from a labor-intensive to a technology-intensive industry.

[0004] The spiral foamed water-spraying packing device for cooling towers has the following drawbacks. Although the improved molding of plastic packing has made great progress, reducing the intensity of manual labor and lowering labor costs, the transportation costs and on-site bonding and assembly costs have not been reduced. Whether the water-spraying packing is compression molded or vacuum molded, it must be cooled and shaped before being trimmed after molding. The large proportion of scrap material increases the production cost. Although the scrap material can be recycled and reused, it must be cleaned and crushed. The crushing process generates a lot of mechanical noise, which can easily cause noise-induced hearing loss to the operators. Therefore, a spiral foamed water-spraying packing device for cooling towers is proposed to solve the above problems. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a spiral foamed water spraying packing device for cooling towers, which aims to improve the problem that in the prior art, whether the water spraying packing is formed by compression molding or vacuum forming, it must be cooled and shaped and then trimmed after molding, resulting in a large proportion of scrap material and increased production costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a spiral foaming water spraying packing device for cooling towers, comprising a foaming liquid generator, a foaming control system fixedly installed on the top outer wall of the foaming liquid generator, a motor fixedly installed on the right outer wall of the foaming liquid generator, a pre-foaming machine fixedly installed on the right outer wall of the foaming liquid generator, a heating system fixedly installed on the right outer wall of the pre-foaming machine, a heating control system fixedly installed on the front inner wall of the heating system, a liquid delivery pipeline fixedly installed on the right outer wall of the heating system, and a foaming box mold fixedly connected to the right end of the liquid delivery pipeline.

[0007] As a further description of the above technical solution: the top inner wall of the foaming box mold is fitted with a lower layer of foaming filler, the top outer wall of the lower layer of foaming filler is fitted with a middle layer of foaming filler, and the top outer wall of the middle layer of foaming filler is fitted with an upper layer of foaming filler.

[0008] As a further description of the above technical solution: the bottom outer wall of the foaming liquid generator is fixedly equipped with movable casters.

[0009] As a further description of the above technical solution: there are two motors, which are respectively fixedly connected to the right outer wall of the foaming liquid generator and the pre-foaming machine.

[0010] As a further description of the above technical solution: a spiral filler core sample is fixedly installed on the top inner wall of the foaming box mold, and the spiral filler core sample is positioned at the spiral filler arrangement angle in the foaming box mold.

[0011] As a further description of the above technical solution: the inner wall of the side surface of the upper layer of the foamed filler is provided with a foamed spiral filler layer, the inner wall of the side surface of the middle layer of the foamed filler is provided with a foamed filler spiral hole inner layer, and the inner wall of the side surface of the lower layer of the foamed filler is provided with a foamed filler spiral hole vertical layer.

[0012] This utility model has the following beneficial effects: 1. In this utility model, the product is foamed and molded in one step. The product specifications can be designed. Only by changing the mold or making a small amount of cutting can standard products and special-shaped products that meet the engineering needs be obtained. The ventilation holes of the large-pore foamed water spray filler of this invention are spiral. The feasibility of spiral hole molding was considered in the mold design. The mold is a detachable closed box with a movable spiral column mold core. After the foamed molding material solidifies, the mold core can be rotated in the opposite direction of the spiral to get out of the mold. At this time, the whole piece of foamed water spray filler can be taken out from the mold box. When producing the mold again, each spiral column can be rotated clockwise to the required position. The spiral column is a movable column that can be fixed on the bottom template. The bottom of the template is equipped with a rotating mechanism, a driving mechanism and a supporting base.

[0013] 2. In this utility model, the foaming unit can be directly implemented on the cooling tower construction site without requiring a large site. Because it can be made and used as needed, there is no need for warehousing and management, nor is there a large amount of transportation work. Only the manufacturing equipment and materials need to be transported to the site once. The foaming unit of this invention includes a foaming machine, a mold box, and a demolding mechanism. The demolding adopts a rotating mechanism with a universal joint that can move freely forward and backward.

[0014] 3. In this utility model, the large-pore foamed water-spraying packing is an integral foamed plastic module with spiral holes. The spiral holes are placed at a 60-degree angle on the bottom template. After the circulating water is sprayed onto the foamed water-spraying packing by the water distribution system, most of the water enters the spiral holes and moves downward along the spiral channel curve. A small portion of the water splashes on the hole walls between the spiral holes, and a small portion seeps into the foam pores and slowly moves downward. The cold air entering the cooling tower enters through the spiral holes at the bottom of the foamed packing and spirals upward along the spiral channel. During the upward process, it exchanges heat and mass with the circulating water to reduce the water temperature. The volume and height of the large-pore foamed water-spraying packing of this invention can be adjusted to a multi-layer structure according to the design. During installation, the upper and lower layers are staggered according to the spiral angle to change the flow path of the circulating water, prolong the residence time of the water in the packing, and improve the heat exchange efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the packing structure of a spiral foamed water spraying packing device for a cooling tower proposed in this utility model; Figure 2 This is a schematic diagram of the arrangement angle of the foamed packing in a spiral foamed water spraying packing device for a cooling tower, as proposed in this utility model. Figure 3 This is a schematic diagram of the foaming process of a spiral foamed water spraying packing device for a cooling tower proposed in this utility model. Figure 4This is a schematic diagram of the foaming molding unit of a spiral foamed water spraying packing device for a cooling tower proposed in this utility model.

[0016] Legend: 1. Foamed spiral packing layer; 2. Inner layer of foamed packing spiral holes; 3. Vertical layer of foamed packing spiral holes; 4. Upper layer of foamed packing; 5. Middle layer of foamed packing; 6. Lower layer of foamed packing; 8. Spiral packing mold core sample; 9. Foaming liquid generator; 10. Pre-foaming machine; 11. Heating system; 12. Infusion pipeline; 13. Foaming box mold; 14. Motor; 15. Movable casters; 16. Foaming control system; 17. Heating control system. Detailed Implementation

[0017] 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.

[0018] Reference Figures 1-3 An embodiment of this utility model provides a spiral foamed water spraying packing device for a cooling tower, comprising a foaming liquid generator 9, a foaming control system 16 fixedly installed on the top outer wall of the foaming liquid generator 9, a motor 14 fixedly installed on the right outer wall of the foaming liquid generator 9, a pre-foaming machine 10 fixedly installed on the right outer wall of the foaming liquid generator 9, a heating system 11 fixedly installed on the right outer wall of the pre-foaming machine 10, a heating control system 17 fixedly installed on the front inner wall of the heating system 11, a liquid delivery pipeline 12 fixedly installed on the right outer wall of the heating system 11, and a foaming box mold 13 fixedly connected to the right end of the liquid delivery pipeline 12.

[0019] Reference Figures 2-4 The bottom outer wall of the foaming liquid generator 9 is fixedly equipped with movable casters 15. There are two motors 14, which are fixedly connected to the right outer wall of the foaming liquid generator 9 and the pre-foaming machine 10 respectively. The top inner wall of the foaming box mold 13 is fixedly equipped with a spiral filler core sample 8. The spiral filler core sample 8 is positioned at the spiral filler arrangement angle in the foaming box mold 13. The inner wall of the side of the upper layer 4 of the foaming filler is provided with a foaming spiral filler layer 1. The inner wall of the side of the middle layer 5 of the foaming filler is provided with a foaming filler spiral hole inner layer 2. The inner wall of the side of the lower layer 6 of the foaming filler is provided with a foaming filler spiral hole vertical layer 3.

[0020] Reference Figures 3-4This invention replaces traditional film-type plastic fillers with spiral porous foamed fillers, fully utilizing the porous nature and large volumetric surface area of ​​foam fillers to improve heat exchange efficiency. It also allows for on-site fabrication of finished products for direct installation, eliminating multiple transportation costs. The production process involves automatically spraying a release agent into a foaming box (13), installing a spiral filler mold core (model 8), injecting foaming liquid into the foaming box, closing the mold, heating, and foaming for a certain time. After cooling and setting, the product is demolded. The key technology of this invention lies in inserting a spiral mold core into the foaming box. After the spiral module cools and sets, the mold core is removed using the shrinkage characteristics of the foamed plastic and the principle of reverse spiral rotation. The removed module is a complete filler unit with a hollow spiral core, which can be directly installed in a cooling tower according to... Figure 1 Install the fabric at the positions shown in Figure 4 (upper layer of foamed filler), Figure 5 (middle layer of foamed filler), and Figure 6 (lower layer of foamed filler). Figure 2 The spiral diameter of the spiral packing core sample 8 shown is greater than 30mm, ensuring that the flushing rubber balls leaking into the packing in the circulating water system of the condensing steam turbine unit of thermal power generation will not be blocked. The diameter of the rubber balls is generally ≤Φ25mm. In addition to having a large spiral hole ventilation channel, the entire module also has a large spiral curved surface area. In addition, all the solids of the module contain large-pore foam, and water can pass through the pores, which is equivalent to a sponge. This slows down the flow time of circulating water in the packing and plays a significant role in improving heat exchange efficiency. The top inner wall of the foaming box mold 13 is clamped with the lower layer of foaming packing 6, the top outer wall of the lower layer of foaming packing 6 is clamped with the middle layer of foaming packing 5, and the top outer wall of the middle layer of foaming packing 5 is clamped with the upper layer of foaming packing 4.

[0021] Working Principle: A counter-flow natural draft cooling tower has a water distribution area of ​​10,000 m2 and a designed water distribution packing height of 1.5 m. The total packing volume is 15,000 m3. If traditional film packing is used with a sheet spacing of 30 mm, the bulk density of each cubic meter of packing is 21.5 kg / m3. According to DL / T742-2019 [Quality Standard for Core Components of Wet Cooling Towers], the production process of conventional film packing requires the purchase of approximately 332 tons of PVC raw materials, including 3% loss and processing allowance. The volume of the finished packing sheet is approximately 500 m3. This type of traditional film packing must be manually bonded on-site. The amount of adhesive used is 1 kg / m3, so the bulk density of the adhesive reaches 15 tons. If 30-ton trucks are used, twelve trucks are needed. Assuming a medium-to-long distance of 1,500 km, the transportation volume is approximately 540,000 t / km. The spiral hole foaming filler of this invention only requires a one-time preparation of raw and auxiliary materials and foaming unit (see details below). Figure 4Upon arrival at the site, no adhesive is required. Furthermore, the volumetric density of this foamed filler is only 50% of that of traditional film-type fillers, thus saving significant transportation and on-site bonding labor costs. Only a simple on-site factory (approximately 300m²) needs to be constructed. The spiral-hole foamed plastic water-spraying filler of this invention, according to… Figure 3 The process route shown involves fabricating the foaming modules, then directly hoisting them onto the filler support frame, according to... Figure 1 The arrangement sequence shown is as follows: first, arrange the lower layer 6 of the foamed packing as the bottom layer; then arrange the middle layer 5 of the foamed packing as the middle layer; and finally arrange the upper layer 4 of the foamed packing as the top layer. All the holes in each layer of packing face upwards. Because the spiral holes are arranged at 60 degrees on the vertical surface of the module, in order to improve the heat exchange efficiency, the spiral directions between the two layers can be intersected during the arrangement.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooling tower spiral foamed sprinkling packing device comprising a foamed liquid generator (9), characterized in that: A foaming control system (16) is fixedly installed on the top outer wall of the foaming liquid generator (9). A motor (14) is fixedly installed on the right outer wall of the foaming liquid generator (9). A pre-foaming machine (10) is fixedly installed on the right outer wall of the foaming liquid generator (9). A heating system (11) is fixedly installed on the right outer wall of the pre-foaming machine (10). A heating control system (17) is fixedly installed on the front inner wall of the heating system (11). An infusion line (12) is fixedly installed on the right outer wall of the heating system (11). A foaming box mold (13) is fixedly connected to the right end of the infusion line (12).

2. A cooling tower spiral foamed sprinkler packing device according to claim 1, characterized in that: The top inner wall of the foaming box mold (13) is fitted with a lower layer (6) of foaming filler, the top outer wall of the lower layer (6) of foaming filler is fitted with a middle layer (5) of foaming filler, and the top outer wall of the middle layer (5) of foaming filler is fitted with an upper layer (4) of foaming filler.

3. A cooling tower spiral foamed water sprinkling packing device according to claim 1, characterized in that: The bottom outer wall of the foaming liquid generator (9) is fixedly equipped with movable casters (15).

4. A cooling tower spiral-finned water-distribution packing device according to claim 1, wherein: There are two motors (14), which are fixedly connected to the right outer wall of the foaming liquid generator (9) and the pre-foaming machine (10).

5. A cooling tower spiral foamed water sprinkling packing device according to claim 1, characterized in that: The top inner wall of the foaming box mold (13) is fixedly installed with a spiral filler core sample (8), and the spiral filler core sample (8) is placed at the spiral filler arrangement angle in the foaming box mold (13).

6. A cooling tower spiral foamed water sprinkling packing device according to claim 2, characterized in that: The upper layer (4) of the foamed filler has a foamed spiral filler layer (1) on its inner side wall, the middle layer (5) of the foamed filler has a foamed filler spiral hole inner layer (2) on its inner side wall, and the lower layer (6) of the foamed filler has a foamed filler spiral hole vertical layer (3) on its inner side wall.

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