Energy-saving cooling water circulating device based on double water tank switching

Abstract

The utility model relates to cooling water system technical field especially an energy -conserving cooling water circulating device based on dual water tank switching, including base plate, the top of base plate is fixed mounting respectively base frame, circulating water pump and heat exchanger, the front and back both sides of base frame top are fixedly connected with main water tank and spare water tank. Circulating water pump draws the water in main water tank into heat exchange pipe and carries out heat exchange cooling to cooling liquid, and the water after heat exchange passes through connecting water pipe again and enters main water tank and circulates use, when second temperature sensor detects the temperature of connecting water pipe backflow water reaches threshold value, PLC control box controls the first solenoid valve of front side and the second solenoid valve of front side close, the first solenoid valve of rear side and the second solenoid valve of rear side open, and the water in spare water tank is used to carry out heat exchange, and through dual water tank alternate operation in this way, can realize not to stop maintaining and temperature difference optimization, and water tank is switched automatically simultaneously, and improves heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cooling water system technology, specifically to an energy-saving cooling water circulation device based on dual-tank switching. Background Technology

[0002] Cooling water systems are one of the circulating systems used in industrial production, energy, and construction. They are typically used to transfer heat from high-temperature or high-energy equipment to cooling water and dissipate it to the air or underground. The system consists of multiple components, including a water circulation pump, a cooling water tank, cooling water pipes, and a heat exchanger.

[0003] A search revealed that the announcement number is CN220276945U, and the name is a cooling water circulation device, which includes a reaction tank and a cooling cylinder embedded and fixed at the top of the reaction tank. A water storage tank is provided on one side of the reaction tank. Through research and analysis, it was found that although the cooling water circulation device facilitates the disassembly, cleaning and installation of the filter element and greatly reduces the possibility of pipe blockage due to impurities, it still has the following defects to a certain extent.

[0004] For example, the above device is equipped with only one circulating water tank. The single-tank cooling system needs to be shut down when replenishing water or cleaning, which affects production efficiency. At the same time, the water temperature in the single tank rises after long-term circulation, affecting cooling efficiency. Moreover, the level of intelligence is low, and it cannot automatically switch water tanks, resulting in low heat exchange efficiency and thus large energy consumption. In order to solve the above technical problems, we have designed an energy-saving cooling water circulation device based on dual-tank switching. Utility Model Content

[0005] The purpose of this invention is to provide an energy-saving cooling water circulation device based on dual-tank switching, which has the advantages of enabling non-stop maintenance and temperature difference optimization, automatic tank switching, improved heat exchange efficiency, reduced energy consumption and greater energy saving. It solves the problems of single-tank requiring shutdown maintenance, affecting production efficiency, and continuous cooling water circulation leading to small temperature difference, low heat exchange efficiency and high energy consumption.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving cooling water circulation device based on dual-tank switching, comprising a base plate, a base frame, a circulating water pump, and a heat exchanger fixedly installed on the top of the base plate, a main water tank and a backup water tank fixedly connected to the front and rear sides of the top of the base frame, a cooling fan being bolted to the left side of both the main water tank and the backup water tank, a first temperature sensor being bolted through and fixedly installed on the left side of both the main water tank and the backup water tank, a return pipe being fixedly connected to the top of both the main water tank and the backup water tank, a first solenoid valve being sleeved and installed on the front and rear surfaces of the bottom of the return pipe, a connecting water pipe being connected to the rear side of the return pipe, a second temperature sensor being fixedly connected through and fixedly installed on the right side of the top of the connecting water pipe, and an outlet pipe being fixedly connected to the bottom of both the main water tank and the backup water tank, a second solenoid valve being sleeved and installed on the front and rear sides of the top of the outlet pipe.

[0007] Preferably, both the main water tank and the backup water tank include a water tank body. Ventilation ducts are welded and connected to the left and right sides of the inner cavity of the water tank body. Heat dissipation fins are welded through the front and rear sides of the inner cavity of the ventilation ducts. A cover plate is bolted to the right side of the top of the water tank body.

[0008] Preferably, a drain pipe is welded to the left side of the bottom of the water tank body, and a rubber plug is installed at the bottom of the drain pipe.

[0009] Preferably, the right side of the outlet pipe is fixedly connected to the inlet of the circulating water pump, and the left side of the top of the main water tank and the backup water tank are welded together with a water injection hopper.

[0010] Preferably, heat exchange tubes and cooling tubes are respectively installed through the left and right sides of the inner cavity of the heat exchanger, the outlet pipe of the circulating water pump is fixedly connected to the front side of the heat exchange tubes, and the rear side of the heat exchange tubes is fixedly connected to the connecting water pipe.

[0011] Preferably, a PLC control box is bolted to the front side of the top of the base plate, and a cleaning opening is provided on the right side of the top of both the main water tank and the backup water tank.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The circulating water pump draws water from the main water tank into the heat exchange tube to cool the coolant. After heat exchange, the water re-enters the main water tank through the connecting water pipe for reuse. When the temperature of the return water in the connecting water pipe reaches the threshold, the PLC control box controls the first and second solenoid valves on the front to close, and the first and second solenoid valves on the rear to open, using water from the spare water tank for heat exchange. This alternating operation of the two water tanks enables non-stop maintenance and temperature difference optimization, while automatically switching water tanks to improve heat exchange efficiency.

[0013] 2. The cooling fan blows outside air into the ventilation duct to quickly dissipate heat from the hot water. When the first temperature sensor detects that the water temperature in the tank has dropped to the normal temperature, the cooling fan stops working. This makes it more intelligent, quickly dissipates heat to lower the water temperature, and reduces cooling energy consumption. Attached Figure Description

[0014] Figure 1 This is an axonometric view of the structure of this utility model; Figure 2 This is a bottom sectional axonometric view of the main water tank of this utility model; Figure 3 This is a right sectional axonometric view of the water tank body of this utility model; Figure 4 This is a rear axonometric view of the structure of this utility model; Figure 5 This is a system schematic diagram of the present invention.

[0015] In the diagram: 1. Base plate; 2. PLC control box; 3. Base frame; 4. Heat exchanger; 5. Cooling pipe; 6. Heat exchange tube; 7. First temperature sensor; 8. Water inlet; 9. First solenoid valve; 10. Return pipe; 11. Main water tank; 12. Connecting water pipe; 13. Circulating water pump; 14. Second temperature sensor; 15. Cooling fan; 16. Rubber plug; 17. Discharge pipe; 18. Second solenoid valve; 19. Water tank body; 20. Heat sink; 21. Ventilation duct; 22. Cover plate; 23. Cleaning opening; 24. Drain pipe; 25. Spare water tank. Detailed Implementation

[0016] Please see Figures 1-5 An energy-saving cooling water circulation device based on dual-tank switching includes a base plate 1. A base frame 3, a circulating water pump 13, and a heat exchanger 4 are fixedly installed on the top of the base plate 1. A main water tank 11 and a backup water tank 25 are fixedly connected to the front and rear sides of the top of the base frame 3, respectively. A cooling fan 15 is bolted to the left side of both the main water tank 11 and the backup water tank 25. A first temperature sensor 7 is bolted through and fixed to the left side of both the main water tank 11 and the backup water tank 25. A return pipe 10 is fixedly connected to the top of the main water tank 11 and the backup water tank 25. A first solenoid valve 9 is sleeved on the front and rear sides of the bottom of the return pipe 10. A connecting water pipe 12 is connected to the rear side of the return pipe 10. A second temperature sensor 14 is fixedly connected through and fixed to the right side of the top of the connecting water pipe 12. An outlet pipe 17 is fixedly connected to the bottom of the main water tank 11 and the backup water tank 25. A second solenoid valve 18 is sleeved on the front and rear sides of the top of the outlet pipe 17. Please see Figure 2Both the main water tank 11 and the backup water tank 25 include a water tank body 19. Ventilation ducts 21 are welded and connected to the left and right sides of the inner cavity of the water tank body 19. Heat sinks 20 are welded through the front and rear sides of the inner cavity of the ventilation duct 21. The heat sinks 20 are made of steel-aluminum composite material and can conduct heat from the water tank to the ventilation duct 21 for rapid air cooling. A cover plate 22 is bolted to the right side of the top of the water tank body 19. By setting the cover plate 22, the top of the water tank body 19 can be opened to clean the scale inside. Please see Figure 2 A drain pipe 24 is welded to the left side of the bottom of the water tank body 19. By setting the drain pipe 24, the hot water in the water tank can be drained and replaced after unscrewing the rubber plug 16. The bottom of the drain pipe 24 is sealed with a rubber plug 16. Please see Figure 1 and Figure 2 The right side of the outlet pipe 17 is fixedly connected to the inlet of the circulating water pump 13. The main water tank 11 and the spare water tank 25 are welded to the left side of the top. By setting the water inlet 8, it is convenient to add water to the water tank. Please see Figure 1 and Figure 4 Heat exchange tubes 6 and cooling tubes 5 are respectively installed through the left and right sides of the inner cavity of heat exchanger 4. By setting cooling tubes 5, it can be connected to the external coolant pipeline to exchange heat with the coolant. The outlet pipe of circulating water pump 13 is fixedly connected to the front side of heat exchange tube 6, and the rear side of heat exchange tube 6 is fixedly connected to connecting water pipe 12. Please see Figure 1 , Figure 3 and Figure 5 A PLC control box 2 is bolted to the front side of the top of the base plate 1. The output terminals of the PLC control box 2 are electrically connected to the first solenoid valve 9, the second solenoid valve 18 and the cooling fan 15 respectively. The output terminals of the first temperature sensor 7 and the second temperature sensor 14 are both electrically connected to the PLC control box 2. A cleaning opening 23 is provided on the right side of the top of the main water tank 11 and the spare water tank 25. By setting the cleaning opening 23, impurities in the water tank can be cleaned out after opening the cover plate 22.

[0017] In use, this device is powered by an external power source. The external cooling system pipes are connected to the cooling pipes 5 on both the front and rear sides. At this time, the first solenoid valve 9 and the second solenoid valve 18 on the front side are open, while the first solenoid valve 9 and the second solenoid valve 18 on the rear side are closed. The circulating water pump 13 works to draw water from the main water tank 11 into the heat exchange pipe 6. After passing through the heat exchanger 4, the coolant flowing into the cooling pipe 5 is cooled by heat exchange. The water after heat exchange flows from the rear heat exchange pipe 6 into the connecting water pipe 12 and re-enters the main water tank 11 for circulation. The second temperature sensor 14 detects the temperature of the return water in the connecting water pipe 12. After long-term operation, the temperature of the return water rises. When the second temperature sensor 14 detects that the water temperature reaches a threshold (e.g., >40°C), the PLC control box 2 controls the first solenoid valve 9 and the second solenoid valve 18 on the front side to close, and the first solenoid valve 9 on the rear side to close. Solenoid valve 9 and the second solenoid valve 18 on the rear side are opened. At this time, the circulating water pump 13 delivers water from the backup water tank 25 to the heat exchange tube 6 for heat exchange. In this way, by alternating the operation of the two water tanks, maintenance without stopping and temperature difference optimization can be achieved. At the same time, the water tanks are automatically switched to improve heat exchange efficiency. When the water in the main water tank 11 stops being used, the PLC control box 2 controls the front cooling fan 15 to work and blow outside air into the front ventilation duct 21. The air flowing in the ventilation duct 21 can quickly remove the heat in the main water tank 11 to quickly cool the hot water. When the first temperature sensor 7 on the front side detects that the water temperature in the main water tank 11 has dropped to the normal temperature, the PLC control box 2 controls the front cooling fan 15 to stop working. Similarly, the hot water in the backup water tank 25 can also be quickly cooled. This makes the system more intelligent, quickly cools down the water temperature, and reduces cooling energy consumption.

[0018] In summary, this energy-saving cooling water circulation device based on dual-tank switching solves the problems of single-tank operation requiring downtime for maintenance, affecting production efficiency, and continuous cooling water circulation leading to small temperature differences, low heat exchange efficiency, and high energy consumption. This is achieved through the coordinated use of a PLC control box 2, a first temperature sensor 7, a first solenoid valve 9, a return pipe 10, a main water tank 11, a connecting water pipe 12, a circulating water pump 13, a second temperature sensor 14, a cooling fan 15, a second solenoid valve 18, and a backup water tank 25.

Claims

1. An energy-saving cooling water circulation device based on dual-tank switching, comprising a base plate (1), characterized in that: The base plate (1) is fixedly mounted with a base frame (3), a circulating water pump (13) and a heat exchanger (4) on its top. The front and rear sides of the top of the base frame (3) are fixedly connected with a main water tank (11) and a backup water tank (25). A cooling fan (15) is bolted to the left side of both the main water tank (11) and the backup water tank (25). A first temperature sensor (7) is bolted through and fixed to the left side of both the main water tank (11) and the backup water tank (25). The top of (25) is fixedly connected to a return pipe (10). The surfaces of the bottom front and rear sides of the return pipe (10) are fitted with a first solenoid valve (9). The back side of the return pipe (10) is connected to a connecting water pipe (12). The right side of the top of the connecting water pipe (12) is fixedly connected to a second temperature sensor (14). The bottom of the main water tank (11) and the backup water tank (25) are fixedly connected to an outlet pipe (17). The front and rear sides of the top of the outlet pipe (17) are fitted with a second solenoid valve (18).

2. The energy-saving cooling water circulation device based on dual-tank switching according to claim 1, characterized in that: The main water tank (11) and the backup water tank (25) both include a water tank body (19). Ventilation tubes (21) are welded and connected to the left and right sides of the inner cavity of the water tank body (19). Heat sinks (20) are welded through the front and rear sides of the inner cavity of the ventilation tube (21). A cover plate (22) is installed on the right side of the top of the water tank body (19) by bolts.

3. The energy-saving cooling water circulation device based on dual-tank switching according to claim 2, characterized in that: A drain pipe (24) is welded to the left side of the bottom of the water tank body (19), and a rubber plug (16) is installed at the bottom of the drain pipe (24) with a sealing thread.

4. The energy-saving cooling water circulation device based on dual-tank switching according to claim 1, characterized in that: The right side of the outlet pipe (17) is fixedly connected to the inlet of the circulating water pump (13), and the left side of the top of the main water tank (11) and the spare water tank (25) are welded together with a water injection hopper (8).

5. The energy-saving cooling water circulation device based on dual-tank switching according to claim 1, characterized in that: The heat exchanger (4) has heat exchange tubes (6) and cooling tubes (5) installed through its inner cavity on the left and right sides respectively. The outlet pipe of the circulating water pump (13) is fixedly connected to the front side of the heat exchange tube (6), and the rear side of the heat exchange tube (6) is fixedly connected to the connecting water pipe (12).

6. The energy-saving cooling water circulation device based on dual-tank switching according to claim 1, characterized in that: The PLC control box (2) is bolted to the front side of the top of the base plate (1), and a cleaning opening (23) is provided on the right side of the top of the main water tank (11) and the spare water tank (25).

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