A counter-flow cooling tower

Abstract

The present invention discloses a counter-flow cooling tower, comprising a tower body, a heat exchange tube arranged in the tower body, a water cooling component and an air cooling component. A water storage tank located below an air inlet is arranged on the tower body, and the water cooling component comprises a water pump, the water inlet of the water pump is connected with the water storage tank, and the water outlet is connected with the water storage tank through a heat absorption channel and a heat dissipation channel in sequence, the heat absorption channel is arranged just above the heat exchange tube, and the heat dissipation channel is arranged outside the tower body. The counter-flow cooling tower has a reasonable structure, guides the cooling water flow path through the heat absorption channel, improves the cooling water utilization rate, reduces the number of cooling water circulation flows, prevents the cooling water from exchanging heat with the air entering the tower body from the outside, and uses the heat dissipation channel to release the heat absorbed by the cooling water to the outside, thereby increasing the heat exchange amount and improving the cooling efficiency, thereby reducing the equipment operation time and achieving energy saving.

Description

Technical Field

[0001] The invention relates to the technical field of cooling towers, in particular to a counter-flow cooling tower. Background Art

[0002] A counterflow cooling tower is a cooling tower that exchanges heat between a fluid medium carrying waste heat and air and spray water inside the tower. During the cooling process, water flows vertically downward in the tower, and external air enters the tower body and flows upward, that is, the direction of the air flow is opposite to the direction of the water flow. Therefore, this type of cooling tower is a counterflow cooling tower.

[0003] The counterflow cooling tower in the prior art is mostly composed of a tower body, a spray pump, a heat exchanger and a wind duct. A fan is installed in the wind duct to attract external air into the tower body to flow upward, contact the heat exchanger, and cool the high-temperature fluid in the heat exchanger. The spray pump draws spray water from the bottom of the tower body and sprays the spray water downward on the heat exchanger through the nozzle. The spray water absorbs the heat of the fluid in the heat exchanger, thus realizing the synchronous operation of liquid cooling and air cooling.

[0004] However, during the operation of the existing countercurrent cooling tower, the air entering the tower body contacts with the spray water after absorbing heat, which, on the one hand, increases the temperature and humidity of the air flowing upward. When the air reaches a saturated state, white mist is easily formed at the outlet of the wind duct. In order to reduce the generation of white mist, a demisting layer is usually arranged under the wind duct. However, the design of the demisting layer increases the height of the tower body, resulting in an increase in the use of materials for tower body production, thereby increasing production costs, and the effect of the demisting layer is limited. When the fluid transition in the heat exchanger is high, white mist will still be generated at the outlet of the wind duct, affecting the surrounding environment; on the other hand, the air contacts with the heated spray water, the temperature rises, the temperature difference between the air and the heat exchanger and the fluid inside it decreases, and the heat exchange effect is reduced. In order to reduce the fluid to the target temperature, it is necessary to repeatedly extract the spray water and extend the running time of the fan in the wind duct, resulting in a decrease in the heat absorption efficiency of the fluid in the heat exchanger, thereby extending the cooling time and increasing the cooling cost and energy consumption.

[0005] Therefore, it is necessary to improve the counterflow cooling tower in the prior art. Summary of the invention

[0006] The object of the present invention is to overcome the defects in the prior art and provide a counter-flow cooling tower which can prevent white mist, improve cooling efficiency, shorten working time and reduce cooling cost and energy consumption.

[0007] To achieve the above technical effects, the technical solution of the present invention is: a countercurrent cooling tower, comprising a tower body, a heat exchange tube arranged in the tower body, a water-cooling component and an air-cooling component for water-cooling and air-cooling the fluid in the heat exchange tube respectively, the air-cooling component comprising an air inlet and an air outlet arranged on the tower body and respectively located below and above the heat exchange tube, a fan is arranged in the air outlet, a water storage tank located below the air inlet is arranged on the tower body, the water cooling component comprises a water pump, the water inlet of the water pump is connected to the water storage tank, and the water outlet is connected to the water storage tank via a heat absorption channel and a heat dissipation channel in sequence, the heat absorption channel is arranged in a close fit directly above the heat exchange tube, and the heat dissipation channel is arranged outside the tower body.

[0008] When the counterflow cooling tower of the above technical solution is in operation, while the high-temperature fluid medium flows in the heat exchange tube, the fan at the air outlet starts, attracting the air below into the tower body through the air inlet and flowing upward. The air exchanges heat with the high-temperature fluid medium inside the heat exchange tube, causing the high-temperature fluid medium to cool down, while the air continues to rise after heating and is discharged from the air outlet. At the same time, the water pump draws cooling water from the water tank at the bottom of the tower body, so that the cooling water flows back to the water tank through the heat absorption flow channel and the heat dissipation flow channel in turn, forming a circulating flow of cooling water.

[0009] When the cooling water flows in the heat absorption flow channel, it contacts the high-temperature medium flowing inside the heat exchange tube through the wall of the heat exchange tube, cooling the high-temperature fluid medium. After the cooling water is heated, it enters the heat dissipation flow channel. Since the heat dissipation flow channel is arranged outside the tower body, the heat of the cooling water in the heat dissipation flow channel is discharged to the outside, that is, after directly contacting the external air, the temperature is reduced, and the low-temperature cooling water returns to the water storage tank. The water supply pump repeatedly extracts it to achieve continuous cooling of the high-temperature fluid medium flowing in the heat exchange tube.

[0010] In the above-mentioned counterflow cooling tower, the cooling water in the water storage tank is restricted in its flow path by the heat absorption flow channel and the heat dissipation flow channel, and the heat absorption flow channel is used to prevent the cooling water from falling from the gap of the cooling tube. Compared with the cooling tower of the prior art, it can ensure that all the cooling water contacts the heat exchange tube through the heat absorption flow channel, thereby realizing heat exchange with the high-temperature fluid medium in the heat exchange tube, reducing the number of times the water pump extracts the cooling water flow, reducing costs while achieving energy saving, and shortening the cooling working time. The heat dissipation flow channel facilitates the cooling water after absorbing heat to discharge the absorbed heat to the outside world, avoiding the cooling water from contacting the air flowing upward in the tower body, resulting in the air heating up before contacting the heat exchange tube, thus ensuring the temperature difference between the air and the heat exchange tube. It is beneficial to improve the heat exchange efficiency. Not only that, the heat absorption flow channel also isolates the contact between air and cooling water, avoiding the cooling water from reaching a high temperature and high humidity insulation state, thereby ensuring the dryness of the high-temperature air discharged from the outlet, avoiding the generation of white fog, and preventing the white fog from affecting the surrounding air environment. Since the generation of white fog is eliminated, there is no need to set up a demisting layer in the tower body. On the one hand, it is beneficial to reduce the height of part of the tower body. On the other hand, it allows multiple layers of heat exchange tubes to be set at a sufficient height in the tower body to increase the heat exchange between air, cooling water and the high-temperature fluid medium in the heat exchange tubes, thereby improving the cooling efficiency.

[0011] Preferably, a long strip of heat absorbing shell is fixed above the heat exchange tube, the heat absorbing shell is parallel to the axis of the heat exchange tube, and the inner wall of the heat absorbing shell and the outer wall of the heat exchange tube enclose the heat absorbing flow channel.

[0012] By adopting the above technical scheme, a heat exchange flow channel for cooling water is formed by enclosing a heat absorption shell and heat exchange tubes, so that when the cooling water flows in the cooling flow channel, the heat of the fluid medium inside it is absorbed through the heat exchange tubes, so that the high-temperature fluid medium is cooled. At the same time, the cooling water is isolated from the contact with the air flowing upward in the tower body, avoiding the air from reaching a saturated high temperature and high humidity state, thereby eliminating the generation of white fog. In this way, there is no need to set a demisting layer in the tower body, which is convenient for more space to accommodate multiple layers of heat exchange tubes, and it is also beneficial to reduce the height of the tower body, so as to reduce the production cost of the tower body.

[0013] Preferably, the projection of the heat absorbing shell on the horizontal plane coincides with the projection of the heat exchange tube on the horizontal plane.

[0014] By adopting the above technical solution, it is beneficial to increase the width of the contact surface between the bottom of the cooling water in the heat absorption flow channel and the outer wall of the heat exchange tube, thereby increasing the contact area between the cooling water and the heat exchange tube, and improving the heat exchange rate between the cooling water and the high-temperature fluid medium in the heat exchange tube, so as to ensure the cooling effect of the cooling water on the high-temperature fluid medium after passing through the heat absorption flow channel.

[0015] Preferably, a long strip of heat absorbing fins is provided on one side of the heat exchange tube adjacent to the heat absorbing shell, and the heat absorbing fins extend in a direction parallel to the length of the heat exchange tube.

[0016] By adopting the above technical solution and utilizing the long strip-shaped heat absorbing fins, the contact area between the cooling water and the heat absorbing shell in the heat absorbing flow channel is increased, which is beneficial to increase the heat exchange between the cooling water heat absorption port and the heat absorbing shell, thereby further improving the heat exchange efficiency of the cooling water to the high-temperature fluid medium in the heat exchange tube.

[0017] Preferably, the heat exchange tubes are provided in plurality and at different heights, and heat absorption channels are attached directly above the heat exchange tubes.

[0018] By adopting the above technical solution, the heat exchange tubes are provided with multiple layers, which are located at different heights, thereby increasing the number of heat exchange tubes, thereby increasing the contact area between air, cooling water and the heat exchange tubes, and ensuring the cooling effect on the high-temperature fluid medium.

[0019] Preferably, the heat exchange tube comprises a plurality of heat exchange straight tubes arranged side by side, a plurality of heat exchange fins distributed along the axial direction of the heat exchange straight tubes are fixed below the heat exchange straight tubes, and the heat exchange fins are perpendicular to the axial direction of the heat exchange straight tubes.

[0020] By adopting the above technical solution, the surface area of ​​the heat exchange tube is increased by using multiple heat exchange fins, thereby increasing the contact area between the air and the heat exchange tube, thereby increasing the heat exchange rate between the air and the high-temperature fluid medium in the heat exchange tube, and further improving the heat exchange effect on the high-temperature fluid medium.

[0021] Preferably, a heat dissipation pipe is provided outside the tower body, the heat dissipation pipe is spaced apart from the tower body, and the inner cavity of the heat dissipation pipe is the heat dissipation channel.

[0022] By adopting the above technical solution, a heat dissipation pipe is arranged on the outside of the tower body, and the inner cavity of the heat dissipation pipe is used to form a heat dissipation flow channel, so that the cooling water after absorbing heat enters the heat dissipation pipe and discharges the absorbed heat to the outside through the pipe wall of the heat dissipation pipe, so that the temperature of the heat dissipation pipe is reduced and then flows back to the water storage tank.

[0023] Preferably, the heat dissipation pipe is wound outside the tower body.

[0024] By adopting the above technical solution, the length of the heat dissipation pipe is extended and the contact space between the pipe wall and the outside is increased, thus increasing the heat exchange area between the cooling water in the heat dissipation pipe and the outside, and ensuring the heat dissipation effect of the cooling water.

[0025] Preferably, one end of the heat dissipation pipe adjacent to the heat absorption flow channel is a liquid inlet end, and the other end is a liquid outlet end. The liquid inlet end is higher than the liquid outlet end, and the liquid inlet end is gradually transitioned to the liquid outlet end.

[0026] By adopting the above technical solution, the cooling water flowing in the heat dissipation pipe enters the liquid inlet end, and then flows downward along the heat dissipation pipe under the influence of natural gravity and is discharged from the liquid outlet pipe. During this flow process, the cooling water contacts the outside world through the wall of the heat dissipation pipe, thereby achieving heat dissipation of the cooling water.

[0027] Preferably, a plurality of the heat dissipation pipes are provided and are connected in sequence, and the heat dissipation pipes are distributed at intervals along the height direction of the tower body.

[0028] By adopting the above technical solution, the number of heat dissipation tubes is increased, thereby increasing the contact area between the tube wall of the heat dissipation tube and the outside world, so that after the cooling water absorbs the heat of the high-temperature fluid medium from the heat absorption flow channel, it flows through each heat dissipation tube in turn. During the flow process, it contacts the tube wall of each heat dissipation tube, thereby greatly increasing the heat exchange rate between the cooling water and the external air, thereby ensuring the cooling effect of the cooling water.

[0029] In summary, the counterflow cooling tower of the present invention has the following improvements compared with the prior art:

[0030] 1. The cooling water is in contact with the heat exchange tube through the heat absorption flow channel to prevent some cooling water from falling without contacting the heat exchange tube after heat exchange. That is, the cooling water is fully utilized to ensure that it exchanges heat with the high-temperature fluid medium in the heat exchange tube, ensure the heat exchange efficiency, reduce the number of cooling water cycles, achieve energy saving and shorten the working time required for cooling;

[0031] 2. The heat absorption channel isolates the contact between cooling water and air to prevent the air from reaching a saturated state of high temperature and high humidity, thereby preventing the formation of white fog at the air outlet. In this way, there is no need to set up a demisting layer in the tower body, ensuring that there is sufficient space to set up the heat absorption channel to increase the heat exchange capacity, while helping to reduce the height of the tower body, thus achieving the effect of cost reduction;

[0032] 3. The heat dissipation channel arranged outside the tower body is used to facilitate the heat exchange between the cooling water after absorbing heat and the outside world, avoiding the heat exchange between the air in the tower body and the heated cooling water, ensuring the temperature difference between the air and the heat exchange tube, thereby improving the cooling effect of the air on the high-temperature fluid medium in the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of Example 1;

[0034] Figure 2 is a structural schematic diagram of another viewing angle of Example 1;

[0035] Figure 3 yes Figure 1 The schematic diagram of the structure after omitting the tower body and the fan;

[0036] Figure 4yes Figure 3 Schematic diagram of the structure after omitting the heat dissipation pipe;

[0037] Figure 5 yes Figure 3 A schematic diagram of the structure from another perspective after omitting the heat dissipation pipe;

[0038] Figure 6 is a schematic structural diagram of the heat exchange assembly of Example 1;

[0039] Figure 7 is a schematic diagram of the connection structure between the heat exchange tube and the heat absorption shell in Example 1;

[0040] Figure 8 yes Figure 7 A schematic diagram of the structure from another perspective;

[0041] Fig. 9 yes Figure 7 A top view of

[0042] Fig.10 yes Fig. 9 AA section view;

[0043] Fig.11 yes Fig.10 A magnified view of part A;

[0044] Fig.12 is a schematic diagram of the connection structure of multiple heat dissipation pipes in Example 1;

[0045] Fig.13 is a schematic structural diagram of a single heat dissipation pipe in Example 1;

[0046] Fig.14 yes Fig.13 Explosion diagram of

[0047] Fig.15 is a schematic diagram of the cross-sectional structure of the connecting pipe of Example 1;

[0048] Fig.16 is a schematic diagram of the cross-sectional structure of the heat exchange straight tube of Example 2;

[0049] Fig.17 yes Fig.16 A front view of

[0050] In the figure: 100. tower body, 101. bottom plate, 102. side plate, 130. top plate, 104. air duct, 200. heat exchange tube, 201. heat exchange straight tube, 202. heat exchange elbow, 300. air inlet, 400. air outlet, 500. fan, 600. water storage tank, 700. water pump, 701. water inlet, 702. water outlet, 800. heat absorption flow channel, 900. heat dissipation flow channel, 110. heat absorption shell, 120. heat absorption fin, 1 30. heat exchange fins, 140. heat dissipation pipe, 141. liquid inlet end, 142. liquid outlet end, 150. inlet pipe, 160. outlet pipe, 170. connecting pipe, 180. connecting pipe, 181. sealing ring, 182. fixing ring, 190. guide pipe, 210. water pipe, 220. heat dissipation straight pipe, 230. heat dissipation connecting block, 240. fixing strip, 250. one-way valve, 251. compression spring, 252. sealing slider, 253. slide rod. DETAILED DESCRIPTION

[0051] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0052] Example 1

[0053] like Figure 1-Figure 15 As shown, the counterflow cooling tower of Example 1 includes a tower body 100, which includes a bottom plate 101 fixed horizontally on the ground, a top plate 103 is arranged directly above the bottom plate 101, the bottom plate 101 and the top plate 103 are fixedly connected by four side plates 102, and the four side plates 102 are fixedly connected end to end in sequence, the bottom plate 101, the top plate 103 and the four side plates 102 enclose an inner cavity of the tower body, and a wind tube 104 is fixed above the top plate 103, and the wind tube 104 is connected to the inner cavity of the tower body (as shown in FIG. Figure 1 and Figure 2 as shown).

[0054] like Figure 1-Figure 6 As shown, the tower body 100 is fixedly connected with a heat exchange assembly, and the heat exchange assembly includes a plurality of heat exchange tubes 200. The heat exchange tubes 200 are horizontally arranged, and the plurality of heat exchange tubes 200 are arranged at different heights in the tower body 100, and two adjacent heat exchange tubes 200 are connected through a connecting tube 170. Among the plurality of heat exchange tubes 200, the heat exchange tube 200 located at the bottom is connected with an inlet pipe 150, and the heat exchange tube 200 located at the highest is connected with an outlet pipe 160. Both the inlet pipe 150 and the outlet pipe 160 extend upward in a vertical direction and pass through the top plate 103. After the high-temperature fluid medium enters from the inlet pipe 150, it flows in each heat exchange tube 200 in turn through each connecting pipe 170, and is finally discharged from the outlet pipe 160.

[0055] like Figure 7-Figure 9As shown, the heat exchange tube 200 includes a plurality of heat exchange straight tubes 201 arranged side by side on the same horizontal plane. The heat exchange straight tubes 201 are long tubes. Two adjacent heat exchange straight tubes 201 are fixedly connected and communicated through a heat exchange elbow 202. The axial centerline shape of the heat exchange elbow 202 is U-shaped, so that the heat exchange tube 200 as a whole is as follows: Fig. 9 The S shape shown.

[0056] The counterflow cooling tower of this embodiment also includes an air cooling component, which is used to air cool the high-temperature fluid medium flowing in the heat exchange tube 200 (including multiple heat exchange straight tubes 201 and heat exchange elbows 202 fixedly connected between two adjacent heat exchange straight tubes 201) to reduce the temperature of the high-temperature fluid medium in the heat exchange tube 200. Its specific structure is: the air cooling component includes an air inlet 300, an air outlet 400 and a fan 500, wherein four air inlets 300 are provided and correspond one-to-one with the side panels 102, the air inlet 300 is provided at the lower part of the side panel 102, and has a height difference with the bottom plate 101 and the heat exchange tube 200, the air outlet 400 is the inner cavity of the air duct 104, and the fan 500 is fixedly provided in the air duct 104.

[0057] During air cooling, the fan 500 is started to generate negative pressure at the air outlet 400, thereby attracting air outside the tower body 100 to enter the tower body 100 through the air inlet 300, flow upward in the tower body 100, and contact the heat exchange tube 200. While in contact, the air transfers heat with the high-temperature fluid medium flowing inside the heat exchange tube 200 through the tube wall of the heat exchange tube 200. After absorbing the heat of the high-temperature fluid medium, the temperature of the fluid medium decreases and is discharged from the outlet pipe 160. The air after absorbing the heat continues to flow upward and is discharged to the outside through the air outlet 400.

[0058] The parts of the four side panels 102 located below the air inlet 300 and the bottom plate 101 enclose a water tank for storing cooling water. The counterflow cooling tower of this embodiment also includes a water cooling component, which is used to perform water cooling on the high-temperature fluid medium flowing in the heat exchange tube 200 to reduce the temperature of the high-temperature fluid medium. The specific structure of the water cooling component is described as follows.

[0059] like Figure 1-Figure 4 , Fig.10 and Fig.11 As shown, the water cooling assembly includes a water pump 700 arranged outside the tower body 100, the water inlet of the water pump 700 is connected to the water reservoir 600 at the bottom of the tower body 100, and the water outlet 702 is connected to the water reservoir 600 through the heat absorption channel 800 and the heat dissipation channel 900 in sequence, the heat absorption channel 800 is arranged in close contact with the heat exchange tube 200, and the heat dissipation channel 900 is arranged outside the tower body 100.

[0060] When the water cooling assembly is in operation, the water pump 700 operates to draw cooling water from the water reservoir 600 , and the cooling water enters the water reservoir 600 through the heat absorption channel 800 and the heat dissipation channel 900 in sequence, thus forming a recycling of cooling water.

[0061] In the circulation process of cooling water, the cooling water first flows in the heat absorption channel 800 after passing through the water pump 700. Since the heat absorption channel 800 is arranged on the heat exchange tube 200, the cooling water in the heat absorption channel 800 can exchange heat with the high-temperature fluid medium flowing in the heat exchange tube 200 through the tube wall of the heat exchange tube 200 to achieve cooling of the high-temperature fluid medium. In addition, the heat absorption channel 800 guides the flow path of the cooling water. Compared with the cooling tower in the prior art that uses a nozzle to spray cooling water downward in the heat exchange tower, the heat absorption channel 800 can be used to cool the high-temperature fluid medium. On the heat pipe, part of the cooling water can easily pass between the heat exchange tubes without undergoing heat exchange treatment. The counterflow cooling tower of this embodiment limits the range of movement of the cooling water, that is, it ensures that the cooling water drawn from the water pump 700 can completely contact the heat exchange tube 200 for heat absorption and cooling treatment. In this way, the utilization rate of the cooling water is improved, and the need for the device to repeatedly draw cooling water during the cooling treatment is avoided, thereby reducing the number of circulations of the cooling water, improving the heat exchange efficiency, and shortening the time required for cooling, thereby achieving an energy-saving effect.

[0062] The heat absorption channel 800 can not only guide the flow path of the cooling water, but also isolate the direct contact between the cooling water and the upward flowing air in the tower body 100 when the equipment is running, thereby preventing the air from transferring heat to the cooling water after absorbing heat and preventing the air from heating up. In this way, the low temperature of the air and the temperature difference between the air and the heat exchange tube 200 before heat exchange are ensured, and the air cooling effect of the air is ensured; in addition, since the air is isolated from the cooling water, it can prevent the air from reaching a high temperature and high humidity state, that is, the generation of white fog is eliminated. Therefore, there is no need to set a demisting layer at the top of the tower body, and at the same time, the dryness of the air discharged from the air outlet 400 is ensured to avoid affecting the surrounding environment. In the actual production process, since there is no need to set a demisting layer, it is beneficial to reduce the height of the tower body 100, that is, to reduce the height of the side plate 102, thereby reducing the production cost, and it is also beneficial to increase the number of layers of the heat exchange tube 200 to ensure the heat exchange area of ​​the high-temperature fluid medium in the heat exchange tube 200, enhance the heat exchange effect, and improve the cooling efficiency.

[0063] Specifically, Figure 7-Figure 11As shown, a plurality of heat exchange tubes 200 are fixedly connected with a long strip-shaped heat absorption shell 110 on top, the heat absorption shell 110 is parallel to the axis of the heat exchange tube 200, the inner wall of the heat absorption shell 110 and the outer wall of the heat exchange tube 200 enclose a heat absorption flow channel 800, the projection of the heat absorption shell 110 on the horizontal plane coincides with the projection of the heat exchange tube 200 on the horizontal plane, the heat exchange tube 200 and the heat absorption shell 110 are integrally formed with three long strip-shaped heat absorption fins 120 distributed side by side, the heat absorption fins 120 extend in a length direction parallel to the heat exchange tube 200, the water outlet 702 of the water pump 700 is connected to the heat absorption flow channel 800 through a water pipe 210, the upper part of the water pipe 210 passes through one of the side plates 200 and is arranged close to the vertical inner wall of the tower body 100.

[0064] After adopting the above structure, the heat absorption shell 110 and the heat exchange tube 200 are used to enclose the heat absorption flow channel 800. The water pump 700 extracts the cooling water and then delivers it to the heat absorption flow channel 800 through the water delivery pipe 210. The heat absorption shell 110 and the heat exchange tube 200 cooperate with each other to limit the flow path of the cooling water, so that the cooling water can fully exchange heat with the high-temperature fluid medium through the heat exchange tube 200; not only that, the heat absorption shell 110 can prevent the cooling water after heat absorption from directly contacting and exchanging heat with the air, thereby preventing the high-temperature air from reaching a saturated high-temperature and high-humidity state, so that white fog is formed at the air outlet 400, affecting the surrounding air environment. Therefore, after isolating the contact between the cooling water and the air, there is no need to set a demisting layer in the tower body 100. On the one hand, the height of the tower body 100 and the height of the side plate 102 can be reduced, thereby reducing the production cost of the cooling tower. On the other hand, it is ensured that there is enough height in the tower body 100 to facilitate the installation of multiple layers of heat exchange tubes 200, thereby enhancing the heat exchange capacity and further enhancing the heat exchange performance of the high-temperature fluid medium.

[0065] The projection of the heat absorption shell 110 on the horizontal plane coincides with the projection of the heat exchange tube 200 on the horizontal plane. After adopting this structural method, the width of the cross section of the heat absorption flow channel 8000 can be increased to increase the contact area between the cooling water and the heat exchange tube 200 in the heat absorption flow channel 800, thereby increasing the heat exchange between the cooling water and the high-temperature fluid medium, and further enhancing the cooling ability of the high-temperature fluid medium; three heat absorption fins 120 are integrally formed on the upper part of the heat exchange tube 200, which increases the contact area between the cooling water and the heat absorption shell 110, so that the heat absorption shell 110 can absorb part of the heat increase of the cooling water, improve the heat exchange efficiency, and further enhance the heat absorption and cooling effect of the cooling water on the high-temperature fluid medium flowing in the heat exchange tube 200.

[0066] like Figure 1-Figure 3 , Figure 12-14As shown, a heat dissipation pipe 140 is fixedly arranged outside the tower body 100, and the inner cavity of the heat dissipation pipe 140 is the heat dissipation channel 900 connected with the heat absorption channel 800; the heat dissipation pipe 140 is arranged around the outside of the tower body 100, and its projection on the horizontal plane is a square closed frame; the two ends of the heat dissipation pipe 140 are respectively a liquid inlet end 141 and a liquid outlet end 142, wherein the liquid inlet end 141 is adjacent to the heat absorption channel 800, and the liquid outlet end 142 is connected to the water storage tank 600, the liquid inlet end 141 is higher than the liquid outlet end 142, and the liquid inlet end 141 is gradually transitioned to the liquid outlet end 142; a plurality of heat dissipation pipes 140 are arranged, which are arranged closely in sequence along the vertical direction, and two adjacent heat dissipation pipes 140 are connected to each other. The specific structure of the heat dissipation pipe 140 is as follows: the heat dissipation pipe 140 includes heat dissipation straight pipes 220 corresponding to the four side panels 102 and four hollow heat dissipation connection blocks 230. The four heat dissipation straight pipes 220 are all arranged obliquely downward, and the four heat dissipation straight pipes 220 are connected in sequence through three of the heat dissipation connection blocks 230. The heat dissipation straight pipe 220 located at the lowest position among the heat dissipation pipes 140 is connected to the heat dissipation straight pipe 220 located at the highest position among the heat dissipation pipes 140 immediately below the above heat dissipation pipes 140 through the remaining heat dissipation connection block 230. The heat dissipation straight pipe 220 and the corresponding side panel 102 are fixedly connected by two fixing bars 240 arranged side by side on both sides of the air inlet 300 and extending in the vertical direction to ensure that there is a gap between the heat dissipation flow channel 900 and the tower body 100. Among the multiple heat dissipation pipes 140, the heat dissipation straight pipe 220 in the heat dissipation pipe 140 located at the lowest position is connected to the water storage tank 600 through the guide pipe 190.

[0067] After adopting the above structure, the inner cavity of the heat dissipation pipe 140 forms a heat dissipation channel 900. When the cooling water that absorbs heat and heats up flows in the heat dissipation channel 900, since the temperature is higher than the outside, the heat is transferred to the outside through the outer wall of the heat dissipation pipe 140 to achieve cooling of the cooling water.

[0068] The heat dissipation pipe 140 is formed by combining four heat dissipation straight pipes 220 and four heat dissipation connection blocks 230, so that the heat dissipation pipe 140 is arranged around the outside of the tower body 100 as a whole. In this way, the length of the heat dissipation pipe 140 is extended, thereby increasing the heat transfer area between the outer wall of the heat dissipation pipe 140 and the outside world, which is convenient for the cooling water in the heat dissipation channel 900 to dissipate heat and cool down; and the liquid inlet end 141 of the heat dissipation pipe 140 is higher than the liquid outlet end 142, and the liquid inlet end 141 is gradually transitioned to the liquid outlet end 142, so that after the cooling water enters the heat dissipation channel 900, it is affected by gravity and flows downward along the pipe wall of the heat dissipation pipe 140, while dissipating heat to the outside world; in addition, after a plurality of heat dissipation pipes 140 are arranged and distributed in the vertical direction, the heat exchange area is further increased, the heat transfer between the cooling water and the outside world after passing through the heat dissipation pipe 140 is increased, the heat dissipation and cooling effect of the cooling water is improved, and the low-temperature cooling water is ensured to enter the water storage tank 600.

[0069] After the guide pipe 190 is provided at the lowest heat dissipation pipe 140 , the cooling water flows along the heat dissipation pipe 140 , and finally flows downward through the guide pipe 190 and flows back into the water storage tank 600 .

[0070] The heat dissipation straight pipe 220 is fixedly connected to the side plate 102 through the fixing strip 240, so that a certain distance is maintained between the heat dissipation pipe 140 and the tower body 100, thereby preventing the cooling water flowing in the heat dissipation channel 900 from transferring heat with the tower body 100, thereby affecting the cooling effect of the high-temperature fluid medium in the heat exchange tube 200 in the tower body 100.

[0071] like Figure 3-Figure 6 As shown, the heat exchange tube 200 is provided with six layers in total, and corresponds to the six heat dissipation tubes 140 at the highest point one by one. The heat exchange tube 200 is connected with the liquid inlet end 141 of the heat dissipation tube 140 through the connecting tube 180, and the heat exchange tube 200, the connecting tube 180 and the liquid inlet end 141 of the heat dissipation tube 140 are located in the same horizontal plane. After adopting this structure, when the cooling water flows in the heat absorption channel 800, it absorbs the heat of the high-temperature fluid medium through the tube wall of the heat exchange tube 200, and the temperature rises. It enters the heat dissipation tube 140 through the connecting tube 180, and the tube wall of the heat dissipation tube 140 dissipates the heat absorbed by the cooling water to the outside of the tower body 100, so as to achieve cooling of the cooling water.

[0072] like Fig.15 As shown, a one-way valve 250 is provided in the circulation pipe 180 to limit the flow direction of the cooling water so that the cooling water can only flow from the heat exchange pipe 200 to the heat dissipation pipe 140. The specific structure is as follows: a sealing ring 181 and a fixing ring 182 are provided in the circulation pipe 180. The sealing ring 181 and the fixing ring 182 are coaxial and the circumferential outer edges of the sealing ring 181 and the fixing ring 182 are fixedly connected to the circumferential inner wall of the circulation pipe 180. The sealing ring 181 is adjacent to the heat exchange pipe 200, the fixing ring 182 is adjacent to the heat dissipation pipe 140, and the fixing ring 182 and the sealing ring 181 are connected. A sealing slider 252 is provided, and the sealing slider 252 is connected to the fixed ring 182 through a compression spring 251. The sealing ring 252 is fixedly connected to a slide rod 253. The slide rod 53 extends along the length direction of the circulation tube 180 and slides with the fixed ring 182. The sealing slider 252 is provided with a cylindrical cone-shaped sealing portion coaxial with the sealing ring 182 at one end adjacent to the sealing ring 182. Specifically, the outer diameter of the end of the sealing portion adjacent to the sealing ring 182 is smaller than the inner diameter of the sealing ring 182, and the outer diameter of the other end is larger than the inner diameter of the sealing ring 182.

[0073] After adopting the above structure, when cooling water flows out from the heat absorption flow channel 800, the cooling water pushes on the sealing slider 252, so that the sealing slider 252 moves toward the fixed ring 182. After compressing the compression spring 251, the cooling water passes through the inner side of the sealing ring 181 and then passes through the inner side of the fixed ring 182 to enter the heat dissipation pipe 140; and if the cooling water flows in the opposite direction to the above direction, the cooling water pushes on the sealing slider 252 from the other side, so that the sealing part of the sealing slider 252 is inserted into the inner side of the sealing ring 182, and the sealing slider 252 is The sealing portion of 52 is sealed and connected with the sealing ring 182 to block the connecting pipe 180. In this way, the cooling water in the heat dissipation pipe 140 at a high position can be prevented from flowing into the heat exchange pipe 200 at a low position, and the cooling water is ensured to flow in the heat absorption channel 800. After absorbing the heat of the high-temperature fluid medium, the cooling water enters the heat dissipation pipe 140 through the connecting pipe 180, and the heat is dissipated to the outside through the pipe wall of the heat dissipation pipe 140, so as to achieve cooling of the cooling water, so that the low-temperature cooling water flows back to the water storage tank 600 through the guide pipe 190.

[0074] Example 2

[0075] like Fig.16 and Fig.17 As shown, the counterflow cooling tower of Example 2 is based on Example 1, but differs in that a plurality of heat exchange fins 130 distributed along the axial direction of the heat exchange straight tube 201 are fixed below the heat exchange straight tube 201, and the heat exchange fins 130 are arc-shaped structures, the center of which is located on the axial direction of the heat exchange straight tube 201, and the heat exchange fins 130 are perpendicular to the axial direction of the heat exchange straight tube 201.

[0076] The heat exchange fins 130 integrally connected to the heat exchange tube 200 increase the surface area of ​​the heat exchange tube 200, thereby increasing the contact area between the air and the heat exchange tube 200. In this way, the heat exchange amount between the air passing through the heat exchange tube 200 and the high-temperature fluid medium flowing inside the heat exchange tube 200 is increased, and the cooling efficiency of the high-temperature fluid medium is further improved, thereby reducing the operating time required for the fan 500, achieving the technical effect of energy saving and consumption reduction.

[0077] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A counter-flow cooling tower, comprising a tower body (100), a heat exchange tube (200) arranged in the tower body (100), a water cooling component and an air cooling component for respectively cooling the fluid in the heat exchange tube (200) by water and air, the air cooling component comprising an air inlet (300) and an air outlet (400) arranged on the tower body (100) and respectively located below and above the heat exchange tube (200), a fan (500) being arranged in the air outlet (400), a water storage tank (600) being arranged on the tower body (100) and located below the air inlet (300), and characterized in that: The water cooling component comprises a water pump (700), a water inlet (701) of the water pump (700) being connected to the water reservoir (600), and a water outlet (702) being connected to the water reservoir (600) via a heat absorption channel (800) and a heat dissipation channel (900) in sequence, the heat absorption channel (800) being arranged in close contact with the top of the heat exchange tube (200), and the heat dissipation channel (900) being arranged outside the tower body (100).

2. The counterflow cooling tower according to claim 1, characterized in that: A long strip-shaped heat absorbing shell (110) is fixed above the heat exchange tube (200); the heat absorbing shell (110) is parallel to the axis of the heat exchange tube (200); the inner wall of the heat absorbing shell (110) and the outer wall of the heat exchange tube (200) enclose the heat absorbing flow channel (800).

3. The counterflow cooling tower according to claim 2, characterized in that: The projection of the heat absorbing shell (110) on the horizontal plane coincides with the projection of the heat exchange tube (200) on the horizontal plane.

4. The counterflow cooling tower according to claim 2, characterized in that: A long strip of heat absorbing fins (120) is provided on one side of the heat exchange tube (200) adjacent to the heat absorbing shell (110), and the heat absorbing fins (120) extend in a length direction parallel to the heat exchange tube (200).

5. The counterflow cooling tower according to claim 1, characterized in that: The heat exchange tubes (200) are provided in plurality and at different heights, and a heat absorption flow channel (800) is attached directly above each of the heat exchange tubes (200).

6. The counterflow cooling tower according to claim 1, characterized in that: The heat exchange tube (200) comprises a plurality of heat exchange straight tubes (201) arranged side by side, a plurality of heat exchange fins (130) arranged along the axial direction of the heat exchange straight tube (201) are fixed below the heat exchange straight tube (201), and the heat exchange fins (130) are perpendicular to the axial direction of the heat exchange straight tube (201).

7. The counterflow cooling tower according to claim 1, characterized in that: A heat dissipation pipe (140) is arranged outside the tower body (100), the heat dissipation pipe (140) is spaced from the tower body (100), and the inner cavity of the heat dissipation pipe (140) is the heat dissipation channel (900).

8. The counterflow cooling tower according to claim 7, characterized in that: The heat dissipation pipe (140) is arranged around the outside of the tower body (100).

9. The counterflow cooling tower according to claim 8, characterized in that: One end of the heat dissipation pipe (140) adjacent to the heat absorption flow channel (800) is a liquid inlet end (141), and the other end is a liquid outlet end (142); the liquid inlet end (141) is higher than the liquid outlet end (142), and the liquid inlet end (141) is arranged in a gradual transition to the liquid outlet end (142).

10. The counterflow cooling tower according to claim 9, characterized in that: A plurality of the heat dissipation pipes (140) are provided and are connected in sequence, and the heat dissipation pipes (140) are distributed at intervals along the height direction of the tower body (100).

Images