Airtight leakage detection and cooling liquid intelligent filling equipment for liquid cooling system of electric power energy storage cabinet

Abstract

The utility model provides airtight leakage detection and cooling liquid intelligent filling equipment for a liquid cooling system of an electric power energy storage cabinet, which relates to the technical field of cooling liquid intelligent filling equipment and comprises a cabinet assembly, a moving trolley, a control valve assembly, a liquid storage tank, a vacuum separation tank, a back suction separation tank, a detection assembly, a filling gun A, a filling gun B and a liquid supplementing pipeline. According to the utility model, the equipment is convenient to move through the mobile trolley. Meanwhile, the equipment system is provided with two filling guns, namely the filling gun A and the filling gun B, when new workpieces on a production line are filled, the filling gun A or the filling gun B can be independently used for carrying out leakage detection and vacuum filling automatic processes, and the filling gun A is used for filling the filled workpieces which are inconvenient to carry out vacuum filling by the system; and the cyclic filling process is completed in a back suction mode of the filling gun B.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent coolant filling equipment, in particular to an airtight leak detection and coolant intelligent filling equipment for a liquid cooling system of an electric energy storage cabinet. Background Art

[0002] Due to the volatile power output of new power stations, industrial and commercial energy storage products require flexible configuration capabilities in terms of system voltage and capacity. Today's energy storage products are being further optimized and improved towards modularization and lightweighting. Integrated liquid-cooled energy storage cabinets use coolant for heat dissipation, offering advantages such as high battery energy density and enhanced protection levels, and are gradually gaining popularity. In this scenario, it is crucial to adapt to the diverse filling requirements of energy storage cabinets, improve the flexibility of filling equipment, and increase product production efficiency. However, most current production lines first perform individual airtightness tests before using simple pumps or manual filling. Furthermore, it is inconvenient to vacuum-fill already filled systems during repairs, which increases assembly difficulties on the production line. Manual filling is demanding and has low filling efficiency, making it unable to meet the high-speed production demands of today, and therefore requires improvement. Utility Model Content

[0003] The purpose of this utility model is to solve the technical problems raised in the above background technology.

[0004] The utility model adopts the following technical solution: an airtight leak detection and coolant intelligent filling device for the liquid cooling system of an electric energy storage cabinet, including a cabinet assembly, a mobile trolley, a control valve assembly, a liquid storage tank, a vacuum separation tank, a back-suction separation tank, a detection assembly, a filling gun A, a filling gun B and a liquid replenishment pipeline. The cabinet assembly includes a cabinet body, a control unit, a cabinet air conditioner, and a filling gun swing arm. The control valve assembly includes an air source processing unit and a pneumatic control valve group. The detection assembly is equipped with a vacuum detection valve A, a vacuum detection valve B, a detection valve, a precision airtight leak detector, an intermediate valve, an air blow valve, a vent valve, a pre-filling valve, a vacuum gauge valve, a vacuum gauge, and a pressure sensor.

[0005] Preferably, the control unit utilizes a programmable logic controller (PLC) as its core, and the pneumatic control valve assembly comprises a valve island module. The processed air source is connected to the valves in the system via the valve island, with the control unit controlling the opening and closing of the valves. Here, the PLC serves as the core controller, enabling it to automatically control the opening and closing of the pneumatic control valves according to pre-set programs and logical conditions. This automated control significantly improves the accuracy and reliability of the system, reduces the need for manual operation, and increases production efficiency.

[0006] Preferably, the liquid storage tank is connected to the liquid replenishment barrel via a liquid replenishment pump to form a liquid replenishment and liquid storage pipeline, the liquid replenishment pipeline is provided with a filter and a flow switch, and the liquid storage tank is provided with a liquid level sensor. Here, the liquid replenishment and liquid storage pipeline can filter the coolant while ensuring a continuous supply of refills.

[0007] Preferably, the liquid storage tank is connected to filling valve A and filling valve B via a filling pump. Filling valve A is connected to gun filling valve A to form a filling line for filling gun A, and filling valve B is connected to gun filling valve B to form a filling line for filling gun B. A pneumatic relief valve, a one-way valve, a filter, a flow meter, a pressure sensor, and a pressure gauge are installed between the filling pump and filling valve A and filling valve B. The pneumatic relief valve is connected to the liquid storage tank. Here, the pressure of the pneumatic relief valve is controlled by pneumatic regulation, making it convenient for operators to operate.

[0008] Preferably, the vacuum separator is equipped with a vacuum separator blow valve, which is connected to an air source. The vacuum separator is then connected to a vacuum pump via the vacuum valve. The vacuum separator is then connected to gun vacuum valve A via pressure-maintaining valve A, forming a vacuum inlet pipeline for filling gun A. The vacuum separator is then connected to gun vacuum valve B via pressure-maintaining valve B, forming a vacuum inlet pipeline for filling gun B. To prevent the extracted air containing moisture from flowing directly into the vacuum pump, when moisture accumulates to a certain level at the bottom of the vacuum separator, the vacuum valve, pressure-maintaining valves A, and pressure-maintaining valves B are closed. The vacuum separator blow valve opens, allowing the air source to fill the vacuum separator with high-pressure air. The vacuum separator drain valve opens, allowing accumulated liquid to flow into the liquid storage tank. This improves equipment life and enables coolant recovery.

[0009] Preferably, the back-suction separator tank is connected to the liquid storage tank via a back-suction tank drain valve. This tank is then connected to gun back-suction valve A via back-suction valve A, forming a back-suction line for filling gun A. This tank is then connected to gun back-suction valve B via back-suction valve B, forming a back-suction line for filling gun B. The back-suction separator tank is connected to an air source via a back-suction tank blow valve. This air source is then connected to the back-suction separator tank via a vacuum generator valve and then to the vacuum generator. A circulation valve is provided in the back-suction line for filling gun B, connecting it to the liquid storage tank via a filter, forming a circulating filling line. The back-suction separator tank and vacuum separator tank ensure the service life of the vacuum generator and enable the recovery of coolant in the back-suctioned gas.

[0010] Preferably, the vacuum test valve A is connected to the gun vacuum valve A to form the test line for filling gun A, and the vacuum test valve B is connected to the gun vacuum valve B to form the test line for filling gun B. The precision airtightness leak detector is connected to the vacuum test valve A and vacuum test valve B respectively through the test valve. Here, by rationally assigning the vacuum test valve and the precision airtightness leak detector to each filling gun, it helps to improve operational efficiency and management capabilities.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] In the present invention, a mobile trolley facilitates the movement of the equipment, adapting to the rework area equipment and the filling of different types of energy storage cabinets, thereby improving the flexibility of the filling equipment. At the same time, the equipment system is equipped with two filling guns, namely filling gun A and filling gun B. When filling new workpieces on the production line, filling gun A or filling gun B can be used alone to perform leak detection and automatic vacuum filling processes. For workpieces that have already been filled and are inconvenient to vacuum fill, filling gun A is used for filling, and filling gun B completes the cyclic filling process by back-suction, adapting to the diversified filling of energy storage cabinets. At the same time, a pre-filling valve is configured in the detection component. Since the workpiece volume is usually relatively large and the inflation speed of the precision airtight leak detector is relatively slow, in order to improve the production cycle, a pre-filling function is added to the equipment system. Before leak detection, the workpiece is pre-filled with a pressure slightly lower than the set value. After the pressure is stabilized, the precision airtight leak detector completes the leak detection of the workpiece through the processes of pressure filling, voltage stabilization, and leak detection, ensuring the filling effect of the workpiece while improving the filling cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model proposes an overall structural diagram of an airtight leak detection and coolant intelligent filling device for a liquid cooling system of an electric energy storage cabinet;

[0014] Figure 2 This is a front view of a device for detecting airtightness and intelligently filling coolant in a liquid cooling system of an electric energy storage cabinet proposed in the utility model;

[0015] Figure 3 This utility model provides a side view of an airtight leak detection and coolant intelligent filling device for a liquid cooling system of an electric energy storage cabinet;

[0016] Figure 4 This is a back view of a device for detecting leaks in a liquid cooling system of an electric energy storage cabinet and intelligently filling coolant.

[0017] Figure 5 This utility model proposes a partial schematic diagram of an airtight leak detection and coolant intelligent filling device for the liquid cooling system of an electric energy storage cabinet;

[0018] Figure 6 The utility model proposes a schematic diagram of an airtight leak detection and coolant intelligent filling device for the liquid cooling system of an electric energy storage cabinet.

[0019] Legend:

[0020] 1. Mobile trolley; 2. Cabinet body; 3. Filling gun swing arm; 4. Filling gun A; 5. Filling gun B; 6. Liquid storage tank; 7. Back-suction separation tank; 8. Precision airtight leak detector; 9. Vacuum separation tank; 10. Air path control element; 11. Air source treatment element; 12. Air-controlled overflow valve; 13. Filter; 14. Flow sensor; 15. Pressure sensor; 16. Cabinet air conditioner; 17. Filling pump; 18. Vacuum pump; 19. Liquid replenishment pump; 20. Pressure gauge; 21. Flow switch. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1

[0024] See also Figure 1-6The present invention provides a technical solution: an airtight leak detection and intelligent coolant filling device for the liquid cooling system of an electric energy storage cabinet, comprising a cabinet assembly, a mobile trolley 1, a control valve assembly, a liquid storage tank 6, a vacuum separation tank 9, a back-suction separation tank 7, a detection assembly, a filling gun A4, a filling gun B5, and a refill line. The cabinet assembly includes a cabinet body 2, a control unit, a cabinet air conditioner 16, and a filling gun swing arm 3. The control valve assembly includes an air source processing unit and a pneumatic control valve group. The detection assembly is equipped with a vacuum detection valve A, a vacuum detection valve B, a detection valve, a precision airtight leak detector 8, an intermediate valve, an air blow valve, a vent valve, a pre-charge valve, a vacuum gauge valve, a vacuum gauge, and a pressure sensor 15. The mobile trolley 1 facilitates the movement of the equipment, adapts to the refilling of equipment in the repair area and different types of energy storage cabinets, and improves the flexibility of the filling equipment. The equipment system is also equipped with two filling guns, A4 and B5. When filling new workpieces on the production line, either A4 or B5 can be used independently for leak detection and automated vacuum filling. For workpieces that have already been filled and are inconvenient to vacuum fill, A4 is used for filling, while B5 uses a back-suction method to complete the cyclic filling process, adapting to the diverse filling needs of the energy storage cabinet. A pre-fill valve is also included in the inspection component. Because workpieces are typically large and the precision airtightness leak detector 8 has a relatively slow filling speed, a pre-fill function has been added to the equipment system to improve production cycle time. Before leak detection, the workpiece is pre-filled to a pressure slightly lower than the set value. After the pressure stabilizes, the precision airtightness leak detector 8 completes the leak detection process, including pressure charging, pressure stabilization, and leak detection. This ensures effective filling of the workpiece while improving the filling cycle time.

[0025] See also Figure 1-6The control unit is based on the PLC programmable controller, and the pneumatic control valve group is the valve island module. The processed air source is connected to the valve in the system through the valve island, and the opening and closing of the valve is controlled by the control unit. With the PLC as the core controller, it can automatically control the opening and closing of the pneumatic control valve according to the preset program and logical conditions. This automated control greatly improves the accuracy and reliability of the system, reduces the need for manual operation, and improves production efficiency. The liquid storage tank 6 is connected to the liquid replenishment barrel through the liquid replenishment pump 19 to form a liquid replenishment storage pipeline. The liquid replenishment pipeline is provided with a filter 13 and a flow switch 21. A liquid level sensor is provided in the liquid storage tank 6. While filtering the coolant through the liquid replenishment storage pipeline, it can ensure the continuous supply of filling. The liquid storage tank 6 is connected to the filling valve A and the filling valve B through the filling pump 17. The filling valve A is connected to the gun filling valve A to form the filling pipeline of the filling gun A4, and the filling valve B is connected to the gun filling valve B to form the filling pipeline of the filling gun B5. The filling pump 1 7 is connected between the filling valve A and the filling valve B and is provided with an air-controlled overflow valve 12, a one-way valve, a filter 13, a flow meter, a pressure sensor 15, and a pressure gauge 20. The air-controlled overflow valve 12 is connected to the liquid storage tank 6. The pressure of the air-controlled overflow valve 12 is controlled by air-controlled regulation, which makes it convenient for the operator to operate. A vacuum tank blowing valve is provided at the vacuum separation tank 9. The vacuum tank blowing valve is connected to the gas source. The vacuum separation tank 9 is connected to the vacuum pump 18 through the vacuum valve. The vacuum separation tank 9 is connected to the gun vacuum valve A through the pressure-maintaining valve A to form the vacuum inlet pipeline of the filling gun A4. The vacuum separation tank 9 is connected to the gun vacuum valve B through the pressure-maintaining valve B to form the vacuum inlet pipeline of the filling gun B5. In order to prevent the extracted air containing moisture from directly flowing into the vacuum pump 18, when the moisture at the bottom of the vacuum tank accumulates to a certain level, the vacuum valve and the pressure-maintaining valve A and the pressure-maintaining valve B are closed, the vacuum tank blowing valve is opened, the gas source fills the vacuum separation tank 9 with high-pressure air, the vacuum tank drain valve is opened, and the accumulated liquid flows into the liquid storage tank 6. It not only improves the life of the equipment, but also realizes the recovery of the coolant. The back-suction separation tank 7 is connected to the liquid storage tank 6 through the back-suction tank discharge valve. The back-suction separation tank 7 is connected to the gun back-suction valve A through the back-suction valve A to form the back-suction pipeline of the filling gun A4. The back-suction separation tank 7 is connected to the gun back-suction valve B through the back-suction valve B to form the back-suction pipeline of the filling gun B5. The back-suction separation tank 7 is connected to the air source through the back-suction tank blowing valve. The air source is connected to the back-suction separation tank 7 in turn through the vacuum generator valve and the vacuum generator. A circulation valve is configured in the back-suction pipeline of the filling gun B5, and the circulation valve is connected to the liquid storage tank through the filter 13. Tank 6 forms a circulating filling pipeline, which can ensure the service life of the vacuum generator and realize the recovery of coolant in the back-suction gas through the back-suction separation tank 7 and the vacuum separation tank 9. The vacuum detection valve A is connected to the gun vacuum valve A to form a detection pipeline of the filling gun A4, and the vacuum detection valve B is connected to the gun vacuum valve B to form a detection pipeline of the filling gun B5. The precision airtight leak detector 8 is respectively connected to the vacuum detection valve A and the vacuum detection valve B through the detection valve. By reasonably allocating the vacuum detection valve and the precision airtight leak detector 8 to each filling gun, it helps to improve operational efficiency and management capabilities.

[0026] Working Principle: The equipment features both vacuum filling and circulating filling functions. The vacuum filling function allows for the use of either filling gun A4 or filling gun B5 alone. When the circulating filling function is enabled, filling valve A and gun filling valve A open, allowing coolant to be injected from filling gun A4 into the workpiece filling port. Simultaneously, filling valve B and gun filling valve B close, while gun return valve B and the circulating valve open. Excess coolant in the workpiece flows back through the return line of filling gun B5 to the liquid storage tank 6, completing the circulating emptying filling method. The detection assembly includes vacuum test valve A, vacuum test valve B, a test valve, a precision airtightness leak detector 8, an intermediate valve, a blow valve, a vent valve, a pre-fill valve, a vacuum gauge valve, a vacuum gauge, and a pressure sensor 15. Vacuum test valve A connects to gun vacuum valve A to form the detection line for filling gun A4, while vacuum test valve B connects to gun vacuum valve B to form the detection line for filling gun B5. The precision leak detector is connected to the vacuum detection valve A and vacuum detection valve B through the detection valve, respectively, to detect the workpieces connected to the filling gun A4 and filling gun B5 respectively. The compressed air after the air source processing unit is connected to the upstream of the gun vacuum valve A or vacuum valve B through the blow valve. By opening the gun vacuum valve A or gun vacuum valve B and closing the pressure maintaining valve A or pressure maintaining valve B, the pipelines in the filling gun A4 or filling gun B5 can be purged respectively. The structure is ingenious. Since the volume of the workpiece is usually relatively large and the inflation speed of the precision airtight leak detector 8 is relatively slow, in order to improve the production rhythm, a pre-inflation function is added to the equipment system. The pre-inflation valve is set in the detection component, and the compressed air after the air source processing unit is connected to the upstream of the gun vacuum valve A or gun vacuum valve B through the pre-inflation valve. By opening the intermediate valve, vacuum detection valve A or vacuum detection valve B, gun vacuum valve A or vacuum valve B, the workpiece connected to the filling gun A4 or filling gun B5 is pre-inflated respectively. Before leak testing, the workpiece is pre-filled with a pressure slightly lower than the set value. After the pressure is stabilized, the precision leak detector completes the process of pressure filling, pressure stabilization, and leak testing. This ensures the filling effect of the workpiece while improving the filling cycle.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An airtight leak detection and coolant intelligent filling device for a liquid cooling system of an electric energy storage cabinet, comprising a cabinet assembly, a mobile trolley (1), a control valve assembly, a liquid storage tank (6), a vacuum separation tank (9), a back-suction separation tank (7), a detection assembly, a filling gun A (4), a filling gun B (5) and a liquid filling pipeline, characterized in that: The cabinet assembly includes a cabinet body (2), a control unit, a cabinet air conditioner (16), and a filling gun swing arm (3). The control valve assembly includes an air source processing unit and a pneumatic control valve group. The detection assembly is equipped with a vacuum detection valve A, a vacuum detection valve B, a detection valve, a precision airtight leak detector (8), an intermediate valve, an air blowing valve, a vent valve, a pre-filling valve, a vacuum gauge valve, a vacuum gauge, and a pressure sensor (15). The liquid storage tank (6) is connected to the liquid replenishment barrel through a liquid replenishment pump (19) to form a liquid replenishment and storage pipeline. The liquid replenishment pipeline is provided with a filter (13) and a flow switch (21). The liquid storage tank (6) is provided with a liquid A position sensor is provided. The liquid storage tank (6) is connected to a filling valve A and a filling valve B via a filling pump (17). The filling valve A is connected to a gun filling valve A to form a filling pipeline for a filling gun A (4). The filling valve B is connected to a gun filling valve B to form a filling pipeline for a filling gun B (5). An air-controlled overflow valve (12), a one-way valve, a filter (13), a flow meter, a pressure sensor (15), and a pressure gauge (20) are provided between the filling pump (17) and the filling valve A and the filling valve B. The air-controlled overflow valve (12) is connected to the liquid storage tank (6). A vacuum tank blowing valve is provided at the vacuum separation tank (9). The vacuum separation tank (9) is connected to the vacuum pump (18) through the vacuum valve, the vacuum separation tank (9) is connected to the gun vacuum valve A through the pressure-maintaining valve A to form a vacuum outlet pipeline of the filling gun A (4), the vacuum separation tank (9) is connected to the gun vacuum valve B through the pressure-maintaining valve B to form a vacuum outlet pipeline of the filling gun B (5), the back-suction separation tank (7) is connected to the liquid storage tank (6) through the back-suction tank discharge valve, the back-suction separation tank (7) is connected to the gun back-suction valve A through the back-suction valve A to form a back-suction pipeline of the filling gun A (4), the back-suction separation tank (7) is connected to the gun back-suction valve B through the back-suction valve B to form a back-suction pipeline of the filling gun B (5). Back-suction pipeline, the back-suction separation tank (7) is connected to the air source through the back-suction tank blowing valve, and the air source is connected to the back-suction separation tank (7) in turn through the vacuum generator valve and the vacuum generator. A circulation valve is configured in the back-suction pipeline of the filling gun B (5), and the circulation valve is connected to the liquid storage tank (6) through the filter (13) to form a circulation filling pipeline. The vacuum detection valve A is connected to the gun vacuum valve A to form a detection pipeline of the filling gun A (4), and the vacuum detection valve B is connected to the gun vacuum valve B to form a detection pipeline of the filling gun B (5). The precision airtight leak detector (8) is connected to the vacuum detection valve A and the vacuum detection valve B respectively through the detection valve.

2. The airtight leak detection and coolant intelligent filling equipment for the liquid cooling system of the power energy storage cabinet according to claim 1 is characterized by: The control unit is based on a PLC programmable controller, and the pneumatic control valve group is a valve island module. The processed gas source is connected to the valves in the system through the valve island, and the opening and closing of the valves are controlled by the control unit.

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