Cooling tower evaporative water recovery device

Abstract

The utility model provides a kind of cooling tower evaporation water recovery device, it is related to cooling tower technical field, including condensing cover, condensing component, water collecting tank, the condensing cover is located in the exhaust area of cooling tower, the condensing cover has with the exhaust passage of cooling tower intercommunication and vertically arranged accommodating cavity, and with the first opening and second opening of two ends intercommunication of the accommodating cavity, the first opening vertically sets up upwards, the second opening vertically sets up downwards, the condensing component is located in the accommodating cavity, the condensing component is equipped with cooling heat dissipation part, the cooling heat dissipation part is used to contact with the humid hot airflow that flows from top to bottom in the accommodating cavity, to produce condensate, the water collecting tank is connected with the second opening, to receive condensate.The utility model can reconvert the originally dissipated water resource into liquid water and reuse to circulation system by effectively collecting the water vapor discharged by cooling tower, to improve water resource utilization, realize the double benefits of energy saving and water saving.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower technology, and in particular to a cooling tower evaporation water recovery device. Background Technology

[0002] In industrial production processes, closed (or open) cooling towers serve as key heat dissipation equipment, primarily removing heat from circulating water through water evaporation to achieve system cooling.

[0003] However, this operating mechanism has significant resource waste problems. Specifically, during the heat exchange process, a large amount of water evaporates and turns into water vapor, which is then directly discharged into the atmosphere. Especially during the high-temperature season, the evaporation loss of the cooling tower can reach 5% to 10% of the total circulating water volume. For industrial enterprises with large water consumption, the annual water waste caused by this is extremely considerable.

[0004] Currently, in the field of cooling tower water recovery technology, existing cooling tower systems generally lack effective steam recovery devices, resulting in the loss of valuable water resources in gaseous form. This not only increases the water costs for enterprises but also contradicts the requirements of current green manufacturing and sustainable development industrial policies. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a cooling tower evaporation water recovery device, which aims to effectively collect the water vapor emitted from the cooling tower, convert the originally lost water resources back into liquid water and reuse it in the circulation system, thereby improving the water resource utilization rate and achieving the dual benefits of energy saving and water saving.

[0006] To achieve the above objectives, this utility model proposes a cooling tower evaporation water recovery device, including a condenser hood, a condenser assembly, and a water collection tank. The condenser hood is located in the exhaust area of ​​the cooling tower and has a vertically arranged accommodating cavity that communicates with the exhaust channel of the cooling tower, as well as a first opening and a second opening that communicate with both ends of the accommodating cavity. The first opening is vertically upward and the second opening is vertically downward. The condenser assembly is located inside the accommodating cavity and has a cooling and heat dissipation section. The cooling and heat dissipation section is used to contact the hot and humid airflow flowing from top to bottom inside the accommodating cavity to generate condensate. The water collection tank is connected to the second opening to collect the condensate.

[0007] In addition, the cooling tower evaporation water recovery device described above according to this utility model may also have the following additional technical features:

[0008] Furthermore, the condensation assembly includes a cooling pipe, a coolant delivery assembly, and a heat recovery assembly. The cooling pipe is arranged in a radial spiral along the accommodating cavity. The coolant delivery assembly is used to deliver coolant to the inlet end of the cooling pipe, and the heat recovery assembly is used to collect the heated coolant delivered from the outlet end of the cooling pipe.

[0009] Furthermore, the coolant delivery assembly includes a cold water tank and a cold water pump. The cold water tank stores coolant, the inlet of the cold water pump is connected to the cold water tank, and the outlet of the cold water pump is connected to the inlet of the cooling pipe.

[0010] Furthermore, the hot water recovery assembly includes a hot water tank and a hot water pump, wherein the inlet end of the hot water pump is connected to the outlet end of the cooling pipe, and the outlet end of the hot water pump is connected to the hot water tank.

[0011] Furthermore, the condensation assembly also includes heat-conducting fins located within the accommodating cavity and arranged in an array on the circumferential surface of the cooling pipe.

[0012] Furthermore, the receiving cavity is provided with a guide plate on the side near the second opening for draining water to the water collection tank side, and the guide plate is distributed in an inclined manner.

[0013] Furthermore, the evaporation water recovery device also includes a water purification component, which is used to purify the condensate in the water collection tank.

[0014] Furthermore, the water purification component includes a filtration unit, an activated carbon adsorption unit, and a sterilization unit. The input end of the filtration unit is connected to the bottom discharge pipe of the water collection tank, the input end of the activated carbon adsorption unit is connected to the output end of the filtration unit, and the input end of the sterilization unit is connected to the output end of the activated carbon adsorption unit.

[0015] Furthermore, the water purification component also includes a recycled water tank, which is used to collect the condensate discharged from the sterilization unit.

[0016] Furthermore, the recycled water tank is equipped with a water level monitoring component, which includes a water level sensor, a solenoid valve, and a control unit. The water level sensor is used to detect the liquid level in the recycled water tank. The solenoid valve is located at the bottom of the discharge pipe of the water collection tank to open and close the connection between the water collection tank and the filter unit. The control unit is connected to the water level sensor to receive the liquid level data collected by the water level sensor and control the solenoid valve to switch its working state according to the liquid level data. The working state includes an open state and a closed state.

[0017] The beneficial effects of this utility model include at least the following: through the coordinated design of the condenser hood and the condenser assembly, a forced convection heat exchange zone is formed in the accommodating cavity, which allows water vapor in the hot and humid airflow to condense rapidly in the cooling and heat dissipation section. Compared with traditional non-recovery systems, this can avoid the waste of most of the water resources in the hot and humid steam discharged from the cooling tower. Moreover, the recovered water can replace part of the production water supply, thereby reducing water costs. At the same time, the heat carried by the recovered water can be reused in the circulating water system or other industrial scenarios, achieving the goal of saving fossil fuels. Ultimately, it achieves a dual optimization of environmental protection indicators and operating costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the cooling tower evaporation water recovery device in one embodiment of the present invention;

[0019] Explanation of key component symbols:

[0020] Condensation hood 100, containment cavity 110, first opening 120, second opening 130, cooling pipe 210, water collection tank 300, discharge pipe 310, water purification component 400, filter unit 410, activated carbon adsorption unit 420, sterilization unit 430.

[0021] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Please refer to Figure 1 This invention provides a cooling tower evaporation water recovery device, comprising a condenser hood 100, a condensation assembly, and a water collection tank 300. Specifically, the condenser hood 100 is located in the exhaust area of ​​the cooling tower. When the cooling tower is working, a large amount of hot and humid air is discharged from the exhaust area, which contains a large amount of evaporated water vapor. The condenser hood 100 has a receiving cavity 110, and a first opening 120 and a second opening 130 connected to both ends of the receiving cavity 110. Because the hot and humid water vapor has a high temperature and a lower density than the surrounding air, it will naturally flow upward. To reduce exhaust resistance and improve discharge efficiency, the outlet direction of the first opening 120 is consistent with the direction of hot air flow. At the same time, to facilitate the discharge of condensate by gravity, the second opening 130 is vertically downward. The receiving cavity 110 is connected to the exhaust channel of the cooling tower, so that the hot and humid air discharged from the cooling tower can pass through the receiving cavity 110. At the same time, the vertical setting of the receiving cavity 110 can smoothly guide the hot and humid air entering the receiving cavity 110 to flow vertically upward. The vertically flowing, hot and humid air partially liquefies upon contact with the cooler inner wall of the accommodating cavity 110. The resulting condensate flows under gravity along the inner wall of the vertically arranged accommodating cavity 110 to the second opening 130 and is discharged from there. To prevent the remaining hot and humid air from being completely discharged through the first opening 120 and wasting water vapor, a condensation assembly is provided inside the accommodating cavity 110. This condensation assembly has a cooling and heat dissipation section. When the condensation assembly is in operation, the cooling and heat dissipation section comes into contact with the hot and humid airflow flowing downwards within the accommodating cavity 110, generating condensate. Under gravity, the condensate on the cooling and heat dissipation section falls to the bottom of the accommodating cavity 110 and is discharged from the second opening 130. To collect the condensate discharged from the second opening 130, a water collection tank 300 is connected below the second opening 130.

[0026] In some alternative embodiments, such as Figure 1 As shown, the condensation assembly includes a cooling pipe 210, a coolant delivery assembly, and a heat recovery assembly. Specifically, the cooling pipe 210 is arranged in a radial spiral along the accommodating cavity 110 to increase the contact area between the cooling pipe 210 and the vertically upward flowing humid hot water vapor in the accommodating cavity 110, thereby improving heat exchange efficiency. To ensure that the cooling pipe 210 has continuous heat exchange capacity, when the condensation assembly is in operation, the coolant delivery assembly is used to deliver coolant to the inlet end of the cooling pipe 210, and the heat recovery assembly is used to collect the heated coolant delivered to the outlet end of the cooling pipe 210.

[0027] In some optional embodiments, the coolant delivery assembly includes a cold water tank and a cold water pump. Specifically, the cold water tank stores coolant that meets the process temperature requirements, the inlet of the cold water pump is connected to the cold water tank, and the outlet of the cold water pump is connected to the inlet of the cooling pipe 210. When the cold water pump is operating, it continuously supplies coolant from the cold water tank into the cooling pipe 210.

[0028] In some optional embodiments, the hydrothermal recovery assembly includes a hot water tank and a hot water pump. Specifically, the inlet of the hot water pump is connected to the outlet of the cooling pipe 210, and the outlet of the hot water pump is connected to the hot water tank. When the hot water pump is working, it continuously pumps the coolant from the cooling pipe 210 into the hot water tank. The water collected in the hot water tank can then be used for workshop cleaning, heating, etc., thereby achieving secondary utilization of heat.

[0029] In this embodiment, the condensation component adopts a coolant circulation system (cold water tank -- cooling pipe 210 -- hot water tank) to form a composite energy-saving system of "water recovery + waste heat utilization". In particular, after the coolant absorbs the latent heat of the humid hot water vapor and heats up, it can supply the heat demand of other processes or application scenarios.

[0030] In some optional embodiments, the condensation assembly further includes heat-conducting fins located within the accommodating cavity 110 and arranged in an array on the circumferential surface of the cooling pipe 210. By providing heat-conducting fins, the contact area between the cooling pipe 210 and the vertically upward flowing humid hot water vapor within the accommodating cavity 110 can be increased, thereby further improving heat exchange efficiency.

[0031] In some optional embodiments, the receiving cavity 110 is provided with a guide plate on the side near the second opening 130 for draining water to the water collection tank 300. The guide plate is distributed at an angle. By providing the guide plate, the condensed water droplets can be guided to flow quickly into the water collection tank 300 connected to the second opening 130, thereby reducing water droplet residue.

[0032] In some alternative embodiments, such as Figure 1 As shown, the evaporation water recovery device also includes a water purification component 400, which is used to purify the condensate in the water collection tank 300. By using the water purification component 400 to deeply treat the recovered water, it is ensured that it can be safely reused in circulating water systems or other industrial scenarios, forming a closed loop for water resource recycling.

[0033] In some alternative embodiments, such as Figure 1As shown, the water purification component 400 includes a filtration unit 410, an activated carbon adsorption unit 420, and a sterilization unit 430. Specifically, the input end of the filtration unit 410 is connected to the bottom discharge pipe of the water collection tank 300 to filter larger particles of impurities in the condensate recovered in the water collection tank 300. Optionally, the filtration unit 410 can be a stainless steel filter screen. The input end of the activated carbon adsorption unit 420 is connected to the output end of the filtration unit 410, and removes odors and pollutants, such as organic matter, from the water discharged from the filtration unit 410 through physical adsorption and / or chemical adsorption. The input end of the sterilization unit 430 is connected to the output end of the activated carbon adsorption unit 420, and kills bacteria and microorganisms in the water discharged from the activated carbon adsorption unit 420. Optionally, the sterilization unit 430 can be an ultraviolet sterilizer.

[0034] In this embodiment, the three-stage purification module (filtration unit 410 → activated carbon adsorption unit 420 → sterilization unit 430) enables the recycled water to meet industrial reuse standards and can be directly returned to the cooling tower circulation system for use, reducing the cost of raw water replenishment.

[0035] In some optional embodiments, the water purification component 400 also includes a recycled water tank for receiving condensate discharged from the sterilization unit 430. By providing a recycled water tank, it can be ensured that the recycled water treated by the water purification component 400 and meeting the reuse standards is effectively collected, so as to facilitate its reuse in circulating water systems or other industrial scenarios.

[0036] In some optional embodiments, the recycled water tank is equipped with a water level monitoring component, which includes a water level sensor, a solenoid valve, and a control unit. Specifically, the water level sensor is used to detect the liquid level in the recycled water tank. The solenoid valve is located on the discharge pipe 310 at the bottom of the water collection tank 300. By controlling the working state of the solenoid valve, the connection between the water collection tank 300 and the filter unit 410 can be opened or closed. The control unit is connected to the water level sensor to receive the liquid level data collected by the water level sensor. When the liquid level in the recycled water tank does not reach the warning level, the control unit controls the solenoid valve to switch to the open state, at which time the discharge pipe 310 is in the open state; when the liquid level in the recycled water tank reaches the warning level, the control unit controls the solenoid valve to switch to the closed state, at which time the discharge pipe 310 is in the closed state. By setting up a water level monitoring component, the overflow of recycled water in the recycled water tank can be prevented.

[0037] Optionally, the control unit can be a control module with active control function, such as a PLC module, MCU module, DSP module, or FPGA module.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of protection of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the appended claims.

Claims

1. A cooling tower evaporation water recovery device, characterized in that, The evaporation water recovery device includes: A condenser hood is provided in the exhaust area of ​​a cooling tower. The condenser hood has a vertically arranged cavity that communicates with the exhaust duct of the cooling tower, and a first opening and a second opening that communicate with both ends of the cavity. The first opening is vertically upward and the second opening is vertically downward. A condensation assembly is disposed within the accommodating cavity. The condensation assembly is provided with a cooling and heat dissipation section, which is used to contact the hot and humid airflow flowing from top to bottom within the accommodating cavity to generate condensate. A water collection tank is connected to the second opening to collect condensate.

2. The cooling tower evaporation water recovery device according to claim 1, characterized in that, The condensation assembly includes: A cooling pipe, wherein the cooling pipe is arranged in a radial spiral along the accommodating cavity; A coolant delivery assembly for delivering coolant to the inlet end of the cooling pipe; A hot liquid recovery assembly is used to collect the heated coolant delivered from the outlet end of the cooling pipe.

3. The cooling tower evaporation water recovery device according to claim 2, characterized in that, The coolant delivery assembly includes: Cold water tank, which stores coolant; A cold water pump, wherein the inlet end of the cold water pump is connected to the cold water tank, and the outlet end of the cold water pump is connected to the inlet end of the cooling pipe.

4. The cooling tower evaporation water recovery device according to claim 2, characterized in that, The hydrothermal recovery assembly includes: Hot water tank; A hot water pump, wherein the inlet of the hot water pump is connected to the outlet of the cooling pipe, and the outlet of the hot water pump is connected to the hot water tank.

5. The cooling tower evaporation water recovery device according to any one of claims 2 to 4, characterized in that, The condensation assembly also includes heat-conducting fins located within the accommodating cavity and arranged in an array on the circumferential surface of the cooling pipe.

6. The cooling tower evaporation water recovery device according to claim 1, characterized in that, The accommodating cavity is provided with a guide plate on the side near the second opening for draining water to the water collection tank side, and the guide plate is distributed in an inclined manner.

7. The cooling tower evaporation water recovery device according to claim 6, characterized in that, The evaporation The water recycling device also includes a water purification component, which is used to purify the condensate in the water collection tank.

8. The cooling tower evaporation water recovery device according to claim 7, characterized in that, The water purification component includes: A filter unit, the input end of which is connected to the bottom discharge pipe of the water collection tank; An activated carbon adsorption unit, wherein the input end of the activated carbon adsorption unit is connected to the output end of the filtration unit; A sterilization unit, the input end of which is connected to the output end of the activated carbon adsorption unit.

9. The cooling tower evaporation water recovery device according to claim 8, characterized in that, The water purification component also includes a recycled water tank, which is used to collect the condensate discharged from the sterilization unit.

10. The cooling tower evaporation water recovery device according to claim 9, characterized in that, The recycled water tank is equipped with a water level monitoring component, which includes: A water level sensor is used to detect the liquid level in the recycled water tank; A solenoid valve is located at the bottom of the discharge pipe of the water collection tank to open and close the connection between the water collection tank and the filter unit; The control unit is connected to the water level sensor to receive the liquid level height data collected by the water level sensor, and controls the solenoid valve to switch its working state according to the liquid level height data. The operating states include an on state and an off state.

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