Industrial circulating water water-saving cooling device and process

Abstract

The invention relates to the technical field of cooling devices, and particularly discloses a water-saving cooling device and process for industrial circulating water. A front cooling unit; a post-cooling recovery unit; a middle conveying unit; and a cooling water output unit. By adopting a tandem type two-stage cooling system and combining the buffering and purifying functions of the return water storage unit, an efficient closed-loop circulation system is constructed, evaporation loss, splashing loss and emission in the cooling process are effectively reduced, and high cyclic utilization of cooling water is achieved; the front cooling unit realizes large-area efficient heat exchange through a mode of combining a conical heat dissipation frame and forced air cooling, and the temperature of high-temperature circulating water is rapidly reduced; afterwards, the post-cooling recovery unit utilizes multiple layers of staggered guide plates and transverse forced ventilation to deeply cool water, so that the temperature of outlet water meets the requirements of industrial equipment, and the overall cooling efficiency and stability are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of cooling device technology, and more specifically, to an industrial circulating water water-saving cooling device and process. Background Technology

[0002] In modern industrial production, especially in high-energy-consuming industries such as metallurgy, chemical industry, power industry, and machinery manufacturing, circulating cooling water is a key medium for maintaining the normal operation of production equipment. Traditional industrial circulating water cooling systems, such as open cooling towers, rely primarily on water evaporation to remove heat, resulting in significant water loss. Furthermore, open cooling towers are susceptible to environmental and weather conditions, leading to large fluctuations in cooling efficiency. Existing improvements, such as indirect cooling, while reducing evaporation losses, typically increase heat exchange equipment and pumping energy consumption, raising initial investment and operating and maintenance costs. Summary of the Invention

[0003] To overcome the above-mentioned technical problems, this invention proposes an industrial circulating water water-saving cooling device and process.

[0004] The objective of this invention can be achieved through the following technical solutions: An industrial circulating water-saving cooling device, comprising: A return water storage unit is used to store circulating water recovered from heat exchange, and a return trough is provided on one side of the top of the return water storage unit; The pre-cooling unit is connected to the output of the return water storage unit and is used to perform primary cooling on the recovered circulating water. The post-cooling recovery unit is connected to the output of the pre-cooling unit and is used to perform secondary cooling and storage of the circulating water. A central conveying unit is located between the return water storage unit and the pre-cooling unit, and is used to convey the circulating water in the return water storage unit to the pre-cooling unit. The cooling water output unit is located at the output end of the post-cooling recovery unit and is used to output the cooled circulating water.

[0005] As a further embodiment of the present invention: the return water storage unit includes a storage chamber connected to the return trough, and a number of partitions are vertically arranged at intervals in the storage chamber. The partitions divide the storage chamber into a number of static cavities, and each set of partitions has an overflow notch at the top; the return trough is connected to one side static cavity, and the central conveying unit is connected to the side static cavity away from the return trough.

[0006] As a further aspect of the present invention: the pre-cooling unit includes a cooling chamber, the bottom of which is provided with a pre-storage cavity connected to the central conveying unit, a water collection tank is provided inside the cooling chamber, and a heat dissipation component communicating with the pre-storage cavity is provided in the center of the water collection tank; several inclined heat dissipation grilles are symmetrically arranged on both sides of the cooling chamber, and heat dissipation vents are formed between adjacent heat dissipation grilles.

[0007] As a further aspect of the present invention: the water collection tank includes an annular baffle plate, and the bottom of the annular baffle plate is provided with a plurality of drainage channels penetrating the cooling chamber.

[0008] As a further aspect of the present invention: the heat dissipation component includes a conical heat dissipation frame vertically fixed inside an annular water-blocking plate, and the conical heat dissipation frame has a vertically formed drainage channel communicating with the front storage cavity.

[0009] As a further aspect of the present invention: a mounting frame is provided on the top of the cooling chamber, a drive motor is installed inside the mounting frame, and a fan blade is connected to the output end of the drive motor.

[0010] As a further aspect of the present invention: the post-cooling recovery unit includes a recovery chamber, and a post-cooling chamber is provided inside the recovery chamber. The top of the post-cooling chamber has several strip-shaped slots located directly below the cooling chamber. Several staggered first guide plates and second guide plates are respectively inclinedly arranged on both sides of the post-cooling chamber. Several through heat dissipation slots are provided on both side walls of the recovery chamber. A heat dissipation fan communicating with the heat dissipation slots is installed on one outer wall of the recovery chamber.

[0011] As a further embodiment of the present invention: the centrally located conveying unit includes a pumping pipe, a transition pipe and a conveying pipe connected in sequence. The pumping pipe is connected to the return water storage unit, the conveying pipe is connected to the pre-cooling unit, and a conveying water pump is installed at the connection between the pumping pipe and the transition pipe.

[0012] As a further aspect of the present invention: the cooling water output unit includes a suction pipe and an output pipe connected in sequence, the suction pipe is connected to the rear cooling chamber, and an output water pump is installed between the suction pipe and the output pipe.

[0013] This invention also discloses a process for an industrial circulating water-saving cooling device, comprising the following steps: Step 1: Circulating water flows back to the return water storage unit via the return tank; Step 2: The circulating water in the return water storage unit is drawn into the pre-cooling unit through the central conveying unit; Step 3: The circulating water is pre-cooled by the pre-cooling unit and then discharged into the post-cooling recovery unit; Step 4: The post-cooling recovery unit performs secondary cooling on the circulating water and stores it; Step 5: The cooling water output unit outputs the circulating water from the post-cooling recovery unit.

[0014] The beneficial effects of this invention are: This invention constructs a highly efficient closed-loop circulation system by adopting a series two-stage cooling system and combining the buffering and purification functions of the return water storage unit. This effectively reduces evaporation loss, splash loss and emissions during the cooling process, and achieves a high degree of recycling of cooling water. This invention employs a two-stage progressive cooling strategy, from coarse cooling to fine cooling. The pre-cooling unit achieves efficient heat exchange over a large area by combining a conical heat sink with forced air cooling, rapidly reducing the temperature of the high-temperature circulating water. Subsequently, the post-cooling recovery unit utilizes multi-layered staggered guide plates and lateral forced ventilation to deeply cool the water, ensuring that the outlet water temperature meets the requirements of industrial equipment, effectively improving overall cooling efficiency and stability. Attached Figure Description

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] Figure 1 This is a three-dimensional schematic diagram of an industrial circulating water-saving cooling device according to the present invention; Figure 2 This is a three-dimensional schematic diagram of an industrial circulating water-saving cooling device according to the present invention from another perspective; Figure 3 This is a cross-sectional view of an industrial circulating water-saving cooling device according to the present invention; Figure 4 This is a schematic diagram of the structure of the return water storage unit in an industrial circulating water saving cooling device according to the present invention; Figure 5 This is a schematic diagram of the structure of the pre-cooling unit in an industrial circulating water saving cooling device according to the present invention; Figure 6 This is a cross-sectional view of the pre-cooling unit in an industrial circulating water saving cooling device according to the present invention. Figure 7 This is a schematic diagram of the post-cooling recovery unit in an industrial circulating water saving cooling device according to the present invention; Figure 8 This is a front view of an industrial circulating water-saving cooling device according to the present invention.

[0017] In the picture: 100. Return water storage unit; 110. Storage tank; 120. Baffle plate; 130. Settling chamber; 140. Overflow notch; 150. Return trough; 200. Aftercooling recovery unit; 210. Recovery bin; 220. Aftercooling chamber; 230. Strip-shaped slot; 240. First guide plate; 250. Second guide plate; 260. Heat dissipation slot; 270. Heat dissipation fan; 300. Pre-cooling unit; 310. Cooling chamber; 320. Pre-storage cavity; 330. Water collection tank; 331. Annular baffle plate; 332. Drainage channel; 340. Heat sink; 341. Conical heat sink frame; 342. Drainage channel; 350. Heat dissipation grille; 360. Heat dissipation vent; 370. Mounting bracket; 380. Drive motor; 390. Fan blades; 400, Centralized conveying unit; 410, Pumping pipe; 420, Transition pipe; 430, Conveying pipe; 440, Conveying water pump; 500, Cooling water output unit; 510, Suction pipe; 520, Output pipe; 530, Output water pump. Detailed Implementation

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0019] Please see Figure 1 , Figure 2 and Figure 3 The present invention discloses an industrial circulating water saving cooling device, including a return water storage unit 100, a pre-cooling unit 300, a post-cooling recovery unit 200, a central conveying unit 400, and a cooling water output unit 500.

[0020] Please see Figure 1 and Figure 4 The return water storage unit 100 has a return trough 150 on one side of its top, which is used to smoothly receive the high-temperature circulating water returned from the industrial equipment. The design of the return trough 150 takes into account uniform water distribution and smooth inflow, and avoids excessive water flow impact that would cause disturbance to the water in the storage unit. Below the return trough 150, there is a storage chamber 110, which serves as the main storage space for the return water. In order to improve the water purification efficiency, several partitions 120 are vertically arranged inside the storage chamber 110. These partitions 120 divide the entire storage chamber 110 into multiple continuous static chambers 130. Each set of partitions 120 has an overflow notch 140 at the top. The overflow notch 140 is usually a rectangular or semi-circular cut to ensure that the water flow smoothly transitions between the static chambers 130 and avoids turbulence. The return tank 150 is connected to the settling chamber 130 closest to it. When the high-temperature circulating water flows from the return tank 150 into the first settling chamber 130, the water flow rate decreases sharply. Most of the heavier particulate impurities in the water (such as silt, iron oxide scale, etc.) will settle due to gravity. As the water level in the first settling chamber 130 gradually rises, the water will overflow through the overflow gap 140 at the top to the adjacent second settling chamber 130, and so on. The water flows through all the settling chambers 130 in sequence. Finally, the water gathers in the settling chamber 130 on the side away from the return tank 150. This multi-stage series settling and sedimentation mechanism effectively utilizes the principle of physical purification, greatly extends the hydraulic residence time, and allows fine particles sufficient time to settle, reducing the turbidity and suspended solids content of the circulating water. This not only extends the cleaning and maintenance cycle of the central delivery unit 400 and the key components of the cooling unit, but more importantly, it effectively prevents scaling and blockage in the subsequent cooling process, providing a cleaner and more stable water source for the entire system. Storage silos 110 are typically made of corrosion-resistant materials (such as stainless steel or corrosion-resistant coated steel) and have a sloping bottom or a sludge discharge valve to allow for regular cleaning of settled sludge.

[0021] Please see Figure 3 and Figure 4 The central conveying unit 400 is a key connection hub between the return water storage unit 100 and the pre-cooling unit 300. It is responsible for accurately and stably conveying the pre-purified circulating water to the first-stage cooling stage. The central conveying unit 400 mainly consists of a water pumping pipe 410, a transition pipe 420, a conveying pipe 430, and a conveying water pump 440 that provides power. The water suction pipe 410 is usually designed as a suction end with a filter screen, which extends into the bottom of the settling chamber 130 in the return water storage unit 100 on the side away from the return tank 150, to ensure that the water being pumped out is the water that has been settling most thoroughly, thus further ensuring water quality. The water suction pipe 410 is connected to the transition pipe 420 by a flange or welding, and a delivery water pump 440 is installed at the connection. The delivery water pump 440 is usually a centrifugal pump with high efficiency and low energy consumption. Its head and flow rate are matched according to the head loss and flow requirements of the entire cooling system. The delivery pipe 430 guides the water output by the pump to the pre-storage chamber 320 of the pre-cooling unit 300.

[0022] Please see Figure 5 and Figure 6The pre-cooling unit 300 is the core area for the first stage of cooling, including a cooling chamber 310. The bottom of the cooling chamber 310 integrates a pre-storage cavity 320 to receive circulating water from the central conveying unit 400. A water collection tank 330 is provided inside the cooling chamber 310 to collect the cooling water flowing down from above. A heat sink 340 is centrally located in the water collection tank 330. The heat sink 340 is connected to the pre-storage cavity 320 at the bottom. An annular baffle plate 331 is provided around the edge of the heat sink 330. Several drainage channels 332 penetrating the cooling chamber 310 are opened circumferentially at the bottom of the annular baffle plate 331 to ensure that the water flowing out from the heat sink 340 can be effectively collected and evenly transported downwards. Please see Figure 6 The heat dissipation component 340 includes a conical heat dissipation frame 341 vertically fixed inside the annular water baffle 331. The conical heat dissipation frame 341 has a vertically opened drainage channel 342 that communicates with the front storage cavity 320. The circulating water in the front storage cavity 320 is lifted to the top of the drainage channel 342 by a water pump, and then overflows evenly from the top. It spreads out in a thin film along the inclined surface of the conical heat dissipation frame 341. The conical structure greatly increases the spread area of ​​the water film, so that it can maximize the contact with air in a limited space. To enhance cooling performance, please refer to [link / reference]. Figure 6 The cooling chamber 310 has several heat dissipation grilles 350 arranged symmetrically and at an angle on both sides. These grilles not only provide a channel for air circulation, but also form efficient heat dissipation vents 360 between adjacent grilles through their unique angle, promoting the exhaust of hot air.

[0023] More importantly, please see Figure 6 A mounting bracket 370 is installed on the top of the cooling chamber 310, on which a drive motor 380 is fixed. The output shaft of the drive motor 380 is connected to the fan blades 390. When the drive motor 380 starts, the fan blades 390 rotate at high speed. Typically, an axial flow fan design is used to form a powerful forced convection airflow inside the cooling chamber 310. The strong airflow directly blows onto the circulating water film flowing on the surface of the conical heat sink 341. Through a combination of evaporative heat dissipation (the latent heat of water removes a large amount of heat) and convective heat transfer (the sensible heat of air removes heat), the heat of the water is efficiently removed. The hot water is rapidly cooled after being washed by the airflow, while the humid air carrying heat is quickly discharged into the atmosphere through the heat dissipation vents 360 formed by the heat dissipation grille 350. This ensures that the high-temperature circulating water can be rapidly and significantly cooled in this stage, effectively bearing the initial heat load and creating favorable conditions for subsequent deep cooling.

[0024] Please see Figure 7 and Figure 8The post-cooling recovery unit 200, as the second-stage cooling stage, focuses on the refined cooling of the circulating water after it has been cooled by the pre-cooling unit 300, and ultimately achieves storage and recovery. The post-cooling recovery unit 200 includes a recovery chamber 210, inside which is a post-cooling chamber 220. The top of the post-cooling chamber 220 is provided with several strip-shaped slots 230, which are precisely located directly below the drain trough 332 of the pre-cooling unit 300, so as to seamlessly receive the water flowing out from the first-stage cooling stage. Inside the aftercooling chamber 220, several staggered first guide plates 240 and second guide plates 250 are respectively arranged on both sides. These guide plates are usually designed with a honeycomb structure or corrugated plate, and the materials are selected from corrosion-resistant plastic or metal thin plates with good thermal conductivity. They cut the falling water flow into smaller water droplets or films, and guide the water flow to form a meandering "S" or "Z" shaped path layer by layer downwards. This greatly increases the contact time and contact area between the water and the air, effectively improves the frequency of water film breaking and re-aggregation, and thus promotes the efficiency of evaporation and convection heat transfer.

[0025] To further enhance the cooling effect, please refer to Figure 2 and Figure 8 The recovery chamber 210 has several through-hole heat dissipation slots 260 on both sides. These heat dissipation slots 260 can be louvered or mesh-like in structure. A cooling fan 270 connected to the heat dissipation slots 260 is installed on one outer wall of the recovery chamber 210. When the cooling fan 270 is started, it will force ambient air into the rear cooling chamber 220 through the heat dissipation slots 260, forming a powerful forced airflow that passes horizontally through the water flow area. This airflow has an efficient heat exchange with the circulating water falling layer by layer, and quickly removes the residual heat in the water, ensuring that the circulating water can be continuously and efficiently cooled to the required lower target temperature. Finally, it is collected and stored at the bottom of the recovery chamber 210 to form a qualified cooling water source that meets the needs of industrial equipment.

[0026] Please see Figure 3 and Figure 7 The cooling water output unit 500 is the end of the entire cooling device, responsible for transporting the circulating water that has reached the target temperature after two stages of cooling back to the industrial production equipment, thus completing the reuse cycle of water resources; the cooling water output unit 500 mainly consists of a suction pipe 510, an output pipe 520, and a hydraulically driven output water pump 530. The inlet of the suction pipe 510 is installed at the lowest point of the rear cooling chamber 220 to ensure that the cooling water with the lowest temperature and most stable quality at the bottom can be drawn; between the suction pipe 510 and the output pipe 520, an output water pump 530 is installed. The flow rate and head of the output water pump 530 need to be matched according to the specific cooling requirements of the industrial equipment, pipe resistance and other factors. When industrial equipment requires cooling water, the output water pump 530 starts, draws cooling water from the post-cooling recovery unit 200, and delivers it to the designated equipment through the output pipe 520. This closed-loop design not only realizes the complete recycling of water resources and minimizes water consumption, but also ensures that industrial equipment receives a stable and continuous supply of cooling water, guaranteeing the smooth operation of the production process.

[0027] The specific embodiments of the present invention have been described above. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention, all of which are within the protection scope of the present invention.

Claims

1. An industrial circulating water-saving cooling device, characterized in that, include: A return water storage unit (100) is used to store circulating water recovered from heat exchange, and a return trough (150) is provided on one side of the top of the return water storage unit (100). A pre-cooling unit (300) is connected to the output of a return water storage unit (100) for primary cooling of the recycled circulating water; The post-cooling recovery unit (200) is connected to the output of the pre-cooling unit (300) and is used to perform secondary cooling and storage of circulating water; A central delivery unit (400) is disposed between the return water storage unit (100) and the pre-cooling unit (300) for delivering circulating water in the return water storage unit (100) to the pre-cooling unit (300). A cooling water output unit (500) is located at the output end of the post-cooling recovery unit (200) and is used to output the cooled circulating water.

2. The industrial circulating water-saving cooling device according to claim 1, characterized in that, The return water storage unit (100) includes a storage chamber (110) connected to the return trough (150). Several partitions (120) are vertically arranged in the storage chamber (110) at intervals. The partitions (120) divide the storage chamber (110) into several static chambers (130). Each set of partitions (120) has an overflow notch (140) at the top. The return trough (150) is connected to one side static chamber (130). The central conveying unit (400) is connected to one side static chamber (130) away from the return trough (150).

3. The industrial circulating water-saving cooling device according to claim 1, characterized in that, The pre-cooling unit (300) includes a cooling chamber (310), a pre-storage cavity (320) connected to the central conveying unit (400) is provided at the bottom of the cooling chamber (310), a water collection tank (330) is provided inside the cooling chamber (310), and a heat dissipation component (340) communicating with the pre-storage cavity (320) is provided in the center of the water collection tank (330); a number of inclined heat dissipation grilles (350) are symmetrically arranged on both sides of the cooling chamber (310), and heat dissipation vents (360) are formed between adjacent heat dissipation grilles (350).

4. The industrial circulating water-saving cooling device according to claim 3, characterized in that, The water collection tank (330) includes an annular baffle plate (331), and the bottom of the annular baffle plate (331) is provided with a plurality of drainage channels (332) that penetrate the cooling chamber (310).

5. The industrial circulating water-saving cooling device according to claim 4, characterized in that, The heat sink (340) includes a conical heat sink (341) vertically fixed inside an annular water baffle (331), and the conical heat sink (341) has a vertically opened drainage channel (342) communicating with the front storage cavity (320).

6. The industrial circulating water-saving cooling device according to claim 3, characterized in that, The top of the cooling chamber (310) is also provided with a mounting bracket (370), and a drive motor (380) is installed in the mounting bracket (370). The output end of the drive motor (380) is connected to a fan blade (390).

7. The industrial circulating water-saving cooling device according to claim 3, characterized in that, The post-cooling recovery unit (200) includes a recovery chamber (210), and a post-cooling chamber (220) is provided inside the recovery chamber (210). The top of the post-cooling chamber (220) is provided with a number of strip-shaped slots (230) located directly below the cooling chamber (310). A number of first guide plates (240) and second guide plates (250) are respectively arranged obliquely on both sides of the post-cooling chamber (220). A number of through heat dissipation slots (260) are provided on both side walls of the recovery chamber (210). A heat dissipation fan (270) communicating with the heat dissipation slots (260) is installed on one side of the outer wall of the recovery chamber (210).

8. The industrial circulating water-saving cooling device according to claim 1, characterized in that, The central delivery unit (400) includes a pumping pipe (410), a transition pipe (420) and a delivery pipe (430) connected in sequence. The pumping pipe (410) is connected to the return water storage unit (100), and the delivery pipe (430) is connected to the pre-cooling unit (300). A delivery water pump (440) is installed at the connection between the pumping pipe (410) and the transition pipe (420).

9. The industrial circulating water-saving cooling device according to claim 7, characterized in that, The cooling water output unit (500) includes a suction pipe (510) and an output pipe (520) connected in sequence. The suction pipe (510) is connected to the rear cooling chamber (220). An output water pump (530) is installed between the suction pipe (510) and the output pipe (520).

10. A process for an industrial circulating water-saving cooling device according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: The circulating water flows back to the return water storage unit (100) via the return tank (150). Step 2: The circulating water in the return water storage unit (100) is drawn into the pre-cooling unit (300) through the central conveying unit (400). Step 3: The circulating water is pre-cooled by the pre-cooling unit (300) and discharged into the post-cooling recovery unit (200). Step 4: The post-cooling recovery unit (200) performs secondary cooling on the circulating water and stores it; Step 5: The cooling water output unit (500) outputs the circulating water from the post-cooling recovery unit (200).

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