Automatic water conservancy balance cooling system

Abstract

The utility model discloses an automatic water conservancy balance cooling system, and belongs to the technical field of battery production equipment. The system comprises a water supply main pipeline, a water return main pipeline, a refrigerating unit and a controller. Wherein the water supply main pipeline is used for conveying cold water, and the water return main pipeline is used for conveying backflow cooling return water. A cold water outlet of the refrigerating unit is connected with the water supply main pipeline, a water return port is connected with the water return main pipeline, branch pipelines are connected between the water supply main pipeline and the water return main pipeline, and each branch pipeline is provided with water utilization equipment. Cold water output by the refrigerating unit enters the branch pipeline after being input into the water supply main pipeline, and finally flows back to the refrigerating unit through the water return main pipeline after cooling the water consuming equipment. The controller is electrically connected with the flow adjusting assembly and controls the chilled water flow in the branch pipelines through the flow adjusting assembly, and automatic balance of the water using temperature and the cooling temperature of the system is achieved.

Description

Technical Field

[0001] This utility model relates to the field of battery production equipment technology, and more specifically, to an automatic hydraulic balance cooling system in battery production equipment. Background Technology

[0002] Some equipment in a battery production line requires cooling water for temperature reduction during heavy production. The equipment requiring chilled water in a battery production line mainly includes power equipment, dehumidifiers, and production equipment. To reduce construction costs, the chilled water supply for production equipment, power equipment, and dehumidifiers typically shares a main chilled water pipe and does not use parallel piping. However, due to varying distances between water usage points and the chilled water station, different pressure drops at rated flow rates, and significant variations in cooling demand under different production loads, the water distribution in the chilled water system needs to be adjusted constantly for energy conservation. This makes flow balance adjustment of the entire chilled water system difficult, and manual adjustments do not yield significant energy savings. Utility Model Content

[0003] This invention provides an automatic hydraulic balance cooling system to solve the problem of difficult flow balance regulation in existing chilled water balance systems.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] An automatic hydraulic balance cooling system, comprising:

[0006] The main water supply line is used to transport cold water;

[0007] The main return water pipeline is used to transport the returning cooling water.

[0008] A refrigeration unit, wherein its chilled water outlet is connected to the main water supply line and its return water outlet is connected to the main return water line; at least one branch line is connected between the main water supply line and the main return water line; water-using equipment and flow regulating components are connected to the branch line.

[0009] The controller is electrically connected to the flow regulating component and controls the chilled water flow rate in the branch pipe through the flow regulating component.

[0010] In this solution, the flow control component is controlled by a controller to adjust the flow rate and temperature of chilled water in the branch pipe, thereby balancing the water volume according to the water-using equipment on the branch pipe.

[0011] As a further improvement, a water pump is also included. When the branch pipe connects to the main return water pipe, a return water connection point is formed, with the return water connection point closest to the chiller unit being the first return water connection point. The water pump is located on the main return water pipe between the first return water connection point and the chiller unit. The controller is also electrically connected to the water pump. The controller first uses a flow regulating component to automatically balance and adjust the chilled water consumption and temperature of the water-using equipment on the branch pipe according to set requirements. However, under different production conditions, when controlling the flow regulating component alone cannot meet the requirements, the controller synchronously controls the water pump for further water flow control.

[0012] As a further improvement, the water-using equipment and the flow-regulating assembly are connected in series on the branch pipe.

[0013] As a further improvement, the flow regulating assembly includes a flow valve located on the branch pipe, which is electrically connected to the controller. The flow regulating assembly also includes a temperature sensor located on the branch pipe, which is electrically connected to the flow valve. The controller can control the opening of the flow valve based on the temperature detected by the temperature sensor, enabling automatic balance and adjustment of the cold water usage and temperature of the water-using equipment on the branch pipe.

[0014] As a further improvement, the flow valve is an electrically adjustable valve, which makes it easier to automatically control the opening degree of the flow valve.

[0015] As a further improvement, a frequency converter is also included, which is electrically connected to both the controller and the water pump. The frequency converter adjusts the pumping volume of the water pump.

[0016] As a further improvement, a temperature gauge and a pressure gauge are also installed on the branch pipe near the flow regulating component. A temperature gauge and a pressure gauge are also installed on the branch pipe near its inlet. This provides redundant monitoring of flow rate, pressure, and temperature on the pipeline.

[0017] As a further improvement, valves are also installed on the branch pipe, near its outlet and inlet. By closing these valves, the components on the branch pipe can be maintained.

[0018] Other technical problems that the automatic hydraulic balance cooling system of this utility model can solve, other technical features contained in the technical solution, and the advantages brought by these technical features will be further explained in detail with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an automatic hydraulic balance cooling system.

[0020] Label Explanation:

[0021] 1. Refrigeration unit; 2. Water pump; 3. Water-using equipment; 4. Valves; 5. Thermometer; 6. Pressure gauge; 7. Temperature sensor; 8. Flow valve; 9. Frequency converter; 10. Controller; 11. Main water supply line; 12. Main return line. Detailed Implementation

[0022] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0023] The structures, proportions, and sizes illustrated in the accompanying drawings are solely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0024] like Figure 1 As shown, this embodiment provides an automatic hydraulic balance cooling system, including a main water supply line 11, a main return water line 12, a chiller unit 1, and a controller 10.

[0025] The main water supply line 11 is used to transport chilled water, and the main return line 12 is used to transport the returning cooling water. The chilled water outlet of the chiller unit 1 is connected to the main water supply line 11, and the return water outlet is connected to the main return line 12. Multiple branch lines connect the main water supply line 11 and the main return line 12, and each branch line is equipped with a water-using device 3. The chilled water output from the chiller unit 1 enters the main water supply line 11 and then flows into the branch lines. After cooling the water-using device 3, the chilled water finally returns to the chiller unit 1 via the main return line 12.

[0026] In this embodiment, the water-using equipment 3 includes, but is not limited to, production equipment, power equipment, and dehumidifiers. One or more water-using equipment 3 are connected to each branch pipe. When multiple water-using equipment 3 are installed on a branch pipe, the water-using equipment 3 are connected in parallel.

[0027] Regarding the setting of branch pipes, in other embodiments, the number of branch pipes is at least one, depending on the number and type of water-using equipment 3.

[0028] In this embodiment, a flow regulating component is also connected to the branch pipe. Specifically, the flow regulating component is installed at the cold water outlet of the water-using device 3, and the water-using device 3 and the flow regulating component are connected in series on the branch pipe.

[0029] The controller 10 is electrically connected to the flow regulating component and controls the chilled water flow rate in the branch pipe through the flow regulating component.

[0030] As a further improvement, the automatic hydraulic balancing cooling system also includes a water pump 2. Regarding the location of the water pump 2, a return water connection point is formed when the branch pipe connects to the main return water line 12. The return water connection point closest to the chiller unit 1 is the first return water connection point, and the water pump 2 is located on the main return water line 12 between the first return water connection point and the chiller unit 1. Additionally, the controller 10 is electrically connected to the water pump 2.

[0031] Furthermore, the flow regulating assembly includes a flow valve 8 located on the branch pipe, which is electrically connected to the controller 10. The flow regulating assembly also includes a temperature sensor 7 located on the branch pipe, which is electrically connected to the flow valve 8. Preferably, the flow valve 8 is an electrically operated regulating valve.

[0032] To facilitate the adjustment of the frequency of the water pump 2, the automatic hydraulic balance cooling system also includes a frequency converter 9, and the frequency converter 9 is electrically connected to the controller 10 and the water pump 2 respectively.

[0033] In addition, a temperature gauge 5 and a pressure gauge 6 are installed on the branch pipe near the flow regulating component. A valve 4 is also installed on the branch pipe near both the outlet and inlet. A temperature gauge 5 and a pressure gauge 6 are also installed on the branch pipe near its inlet.

[0034] In this scheme, the controller 10 controls the flow regulating component to adjust the chilled water flow rate and temperature in the branch pipe, thereby balancing the water volume according to the water-using equipment 3 on the branch pipe. Specifically, the temperature sensor 7 in the flow regulating component detects the water temperature in its branch pipe in real time and feeds it back to the flow valve 8. At the same time, the controller 10 receives the valve position information of the flow valve 8. The controller 10 controls the opening of the flow valve 8 according to the temperature detected by the temperature sensor 7, so that the chilled water consumption and cooling temperature of the water-using equipment 3 on the branch pipe can be automatically balanced and adjusted.

[0035] For example, a flow control component is installed at the cold water outlet of the water-using equipment 3, allowing the temperature sensor 7 to detect the temperature of the cooled return water. For ease of control, the return water temperature on the branch pipes is set to a target temperature range, and the flow valve 8 has a maximum and minimum opening. The controller 10 first controls the opening of the flow valve 8 based on the temperature detected by the temperature sensor 7, automatically balancing the cold water usage and temperature of the water-using equipment 3 on the branch pipes according to the set requirements. Secondly, under different production conditions, the controller 10 monitors the valve position information of the flow valve 8 and the return water temperature of each branch pipe in real time. If the valve position of the flow valve 8 in a branch pipe reaches or exceeds the maximum opening, and the return water temperature exceeds the target temperature range, the controller 10 controls the water pump 2 to increase its frequency and increase the pumping volume. Additionally, the controller 10 compares the valve positions of the flow valves 8 on each branch pipe in real time. If the valve openings of all flow valves 8 are less than the minimum opening, the controller 10 promptly controls the water pump 2 to reduce its frequency.

[0036] In one specific implementation, the automatic hydraulic balancing cooling system has a chilled water temperature of 7°C output from the main supply water line 11 of the chiller unit 1, and a return water temperature of 12°C required to be controlled in the main return water line 12. The target temperature range is 11.5°C-12.5°C, and the opening degree of the flow valve 8 is 80%-95%. The controller 10 first adjusts the water flow of different branch pipes by controlling the opening degree of the flow valve 8 through the flow regulating component, so that the return water temperature of different branch pipes reaches a balanced state. When controlling the flow valve 8 alone cannot meet the requirements, the controller 10 synchronously controls the water pump 2 for further water flow control. The controller 10 includes a Schneider TM241CE24R main unit, a TM3AI8 input module, and a TM3AQ4 output module. The TM3AI8 input module and the TM3AQ4 output module are both connected to the TM241CE24R main unit for information input and output. The specific control situation is as follows:

[0037] When the load on a water-using device 3 on a branch pipe decreases, the return water temperature on that pipe decreases, causing the return water temperature on the main return water line 12 to decrease as well. However, if the temperature drops below 11.5℃, the temperature sensor sends a signal to control the flow valve 8, reducing its opening and decreasing the chilled water flow rate on that branch pipe. This gradually raises the return water temperature, balancing the chilled water flow rate in the system and maintaining the return water temperature on the main return water line 12 at around 12℃. Conversely, when the load on a water-using device 3 on a branch pipe increases, the return water temperature on that branch pipe rises. However, if the temperature exceeds 12.5℃, the temperature sensor sends a signal to control the flow valve 8, increasing the chilled water flow rate on that branch pipe. This gradually lowers the return water temperature, balancing the chilled water flow rate in the system and maintaining the return water temperature on the main return water line 12 at around 12℃ again.

[0038] During the off-season, production line capacity decreases, and the entire system requires less chilled water. When the return water temperature drops below 11.5℃, temperature sensor 7 controls flow valve 8 to reduce the system flow. When the opening of all flow valves 8 is less than 80%, controller 10 controls the frequency converter 9 of water pump 2 to reduce the pump frequency by 5Hz. After waiting for 30 minutes, the opening of flow valve 8 is monitored again. When the opening of a certain flow valve 8 is greater than 80%, the return water temperature is gradually increased to balance the system chilled water flow and maintain the return water temperature on the main return water line 12 at around 12℃ to meet the system operation requirements, and the pump frequency remains stable. During peak production season, increased production capacity leads to a greater demand for chilled water in the entire system, with return water temperatures exceeding 12.5℃. When the opening of a certain flow valve 8 reaches 95% and the return water temperature is above 12.5℃, the controller 10 controls the frequency converter 9 of water pump 2 to increase the pump frequency by 5Hz. After waiting for 30 minutes, the opening of flow valve 8 is monitored again. When the opening of all flow valves 8 is less than 95%, the return water temperature is gradually reduced to balance the chilled water flow in the system. This keeps the return water temperature on the main return water line 12 around 12℃, meeting the system's operating requirements, and the pump frequency remains stable.

[0039] In addition, thermometers 5 and pressure gauges 6 are installed at different locations on the branch pipes to enhance the detection of temperature changes on the pipes and enable manual response in case of malfunction. Valves 4 are also installed on the branch pipes, near the outlet and inlet of the branch pipes. These valves 4 are manual valves. If the equipment on a branch pipe malfunctions, the valve can be manually closed to cut off the water flow on that pipe for maintenance.

[0040] The terms "installation," "setup," "equipped with," and "connection" used herein should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0041] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An automatic water balance cooling system, characterized in that, The application is applied to a battery production system, comprising: a water supply main pipeline (11) for conveying cold water; a return water main pipeline (12) for conveying return cooling water; a refrigeration unit (1) with a cold water outlet connected to the water supply main pipeline (11) and a return water outlet connected to the return water main pipeline (12); at least one branch pipeline is connected between the water supply main pipeline (11) and the return water main pipeline (12); a water using device (3) and a flow regulating assembly are connected to the branch pipeline; a controller (10) electrically connected to the flow regulating assembly and controlling the flow of chilled water in the branch pipeline through the flow regulating assembly; a water pump (2) connected to the branch pipeline and the return water main pipeline (12) to form a return water connection point, wherein the return water connection point closest to the refrigeration unit (1) is a first return water connection point; the water pump (2) is located on the return water main pipeline (12) between the first return water connection point and the refrigeration unit (1); the controller (10) is also electrically connected to the water pump (2); the flow regulating assembly comprises a flow valve (8) located on the branch pipeline, the flow valve (8) being electrically connected to the controller (10); the flow regulating assembly further comprises a temperature sensor (7) located on the branch pipeline, the temperature sensor (7) being electrically connected to the flow valve (8); the controller (10) first controls the opening of the flow valve (8) according to the temperature detected by the temperature sensor (7), and when the flow valve (8) cannot meet the requirements, the controller (10) synchronously controls the water pump (2) to further control the water flow; the temperature sensor (7) controls the return water temperature range of each branch pipeline to be 11.5-12.5℃, and the opening range of the flow valve (8) is 80%-95%.

2. The automatic hydro-balance cooling system of claim 1, wherein: the water using device (3) and the flow regulating assembly are connected in series on the branch pipeline.

3. The automatic hydro-balance cooling system of claim 1, wherein: the flow valve (8) is an electrically controlled valve.

4. The automatic hydro-balance cooling system of claim 1, wherein: a frequency converter (9) is further included, which is electrically connected to the controller (10) and the water pump (2) respectively.

5. The automatic hydro-balance cooling system of claim 1, wherein: a temperature gauge (5) and a pressure gauge (6) are further provided on the branch pipeline and close to the flow regulating assembly.

6. The automatic hydro-balance cooling system of claim 1, wherein: valves (4) are further provided on the branch pipeline and close to the outlet and inlet of the branch pipeline respectively.

7. The automatic hydro-balance cooling system of claim 6, wherein: a temperature gauge (5) and a pressure gauge (6) are further provided on the branch pipeline and close to the inlet of the branch pipeline.

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