Electrolyte automatic extraction integrated equipment applied to all-vanadium redox flow battery

Abstract

The utility model discloses automatic electrolyte extraction integrated equipment applied to an all-vanadium redox flow battery, and relates to the technical field of electrolyte extraction, the automatic electrolyte extraction integrated equipment comprises a movable frame, a magnetic drive pump and a diaphragm pump, the automatic electrolyte extraction integrated equipment is provided with an automatic control electromagnetic valve, the diaphragm pump and the magnetic drive pump, one-key starting of electrolyte suction can be realized, and the automatic electrolyte extraction efficiency is improved. Meanwhile, the emergency shutdown function of the diaphragm pump and the magnetic drive pump is achieved, namely when electrolyte is completely pumped, the system automatically stops, the magnetic drive pump is prevented from idling, and the equipment failure rate is reduced. Efficient cooperation of the diaphragm pump and the centrifugal pump is achieved, after gas is pumped out through the diaphragm pump, the non-contact liquid level sensor is used for detecting the gas-liquid condition of an inlet of the magnetic drive pump, the starting strategy of the centrifugal pump is automatically judged, the liquid pumping speed is increased through the centrifugal pump, the cavitation phenomenon of the centrifugal pump is reduced, and the working efficiency of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolyte extraction, in particular to an integrated device for automatic electrolyte extraction applied to a vanadium redox flow battery. Background Technique

[0002] At present, the vanadium redox flow battery system adopts a container modular design, that is, the capacity unit and the power unit are decoupled. Considering safety and cost factors, the equipment body of the capacity unit and the electrolyte are transported separately, that is, the capacity unit and the power unit are first transported to the energy storage site, and then the electrolyte is transported to the energy storage site by a ton barrel for filling. Affected by the solubility of vanadium ions, the energy density of the battery system is relatively low. Therefore, for a long-time and large-capacity vanadium redox flow battery system, the electrolyte volume is huge, and an efficient and safe electrolyte filling technology is an important part of the energy storage project construction.

[0003] At present, when filling the electrolyte at the project site, there is no mature automatic electrolyte filling equipment. Generally, a simple device composed of a self-assembled diaphragm pump and a ball valve is used, and it is necessary to manually open and close the diaphragm pump and the ball valve. And due to the characteristics of the diaphragm pump, although it has the function of self-priming liquid, the flow rate is small. When extracting a large volume of electrolyte, it will take a lot of time.

[0004] Other self-assembled devices also use a simple device composed of a centrifugal pump and a ball valve. Although the centrifugal pump has a large flow rate, since no gas can enter at the inlet of the centrifugal pump, the requirement for the gas volume in the inlet pipeline is relatively high. The liquid extraction pipes at the energy storage site are generally long, resulting in a long air column in front of the inlet of the centrifugal pump, and it is difficult to discharge the gas in actual application. Summary of the Invention

[0005] The purpose of the utility model is to provide an integrated device for automatic electrolyte extraction applied to a vanadium redox flow battery to overcome the above-mentioned defects in the prior art.

[0006] An integrated device for automatic electrolyte extraction applied to a vanadium redox flow battery includes a mobile rack, a magnetic pump and a diaphragm pump. Two magnetic pumps are provided and symmetrically arranged on the mobile rack. The liquid inlet of each magnetic pump is connected to a liquid inlet pipe through a liquid inlet ball valve. The liquid outlet of each magnetic pump is connected to the liquid inlet of a corresponding filter on the mobile rack through a pipeline 1. The liquid outlet of the filter is connected to a liquid outlet pipe. An electromagnetic valve 1 is provided on each pipeline 1. The lower sides of the two pipelines 1 are connected through a pipeline 2. Solenoid valves 2 are installed on both sides of the pipeline 2 respectively. The upper sides of the two pipelines 1 are connected through a pipeline 3. Solenoid valves 3 are installed on both sides of the pipeline 3 respectively. The pipeline 2 is connected to the liquid inlet of the diaphragm pump on the mobile rack through a pipeline 4. The pipeline 3 and the pipeline 4 are connected through a pipeline 5. The liquid outlet of the diaphragm pump is connected to the pipeline 5.

[0007] Preferably, two liquid level sensors are provided along the liquid inlet pipe.

[0008] Preferably, a pressure sensor and a safety valve are respectively installed on the pipeline five from top to bottom.

[0009] Preferably, a liquid outlet ball valve is provided on the liquid outlet pipe.

[0010] Preferably, pulleys are respectively provided at the four corners of the bottom of the moving frame.

[0011] The beneficial effects achieved by the utility model are as follows:

[0012] 1. The automatic extraction integrated equipment of the present application is equipped with automatic control of solenoid valves, diaphragm pumps and magnetic pumps, and can realize one-key start of electrolyte suction. At the same time, it has the emergency stop function of diaphragm pumps and magnetic pumps, that is, when the electrolyte is pumped out, the system automatically stops, preventing the magnetic pump from idling and reducing the equipment failure rate.

[0013] 2. The device realizes the efficient cooperation of the diaphragm pump and the centrifugal pump. After the gas is pumped out by the diaphragm pump, the gas-liquid condition at the inlet of the magnetic pump is detected by a non-contact liquid level sensor, and the start strategy of the centrifugal pump is automatically judged. The pumping speed is increased by the centrifugal pump, the cavitation phenomenon of the centrifugal pump is reduced, and the working efficiency of the equipment is improved.

[0014] 3. A pressure sensor is added at the diaphragm pump to monitor the pressure value at the diaphragm pump in real time. When the pressure value is higher than the upper threshold, the liquid injection system automatically stops. At the same time, a safety valve is installed at the diaphragm pump. When the pressure stop protection fails, it ensures that the pressure can be released smoothly and guarantees the operation safety of the diaphragm pump and the system. Brief Description of the Drawings

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the whole utility model.

[0016] Figure 2 It is a front view of the whole utility model.

[0017] Figure 3 It is a side view of the whole utility model.

[0018] Figure 4 It is a working flow chart of the utility model.

[0019] In the figure, 1. Moving frame; 11. Pulley; 2. Magnetic pump; 3. Liquid inlet pipe; 31. Liquid inlet ball valve; 32. Liquid level sensor; 4. Pipeline one; 41. Solenoid valve one; 5. Filter; 51. Liquid outlet pipe; 52. Liquid outlet ball valve; 6. Pipeline two; 61. Solenoid valve two; 7. Pipeline three; 71. Solenoid valve three; 8. Pipeline four; 9. Pipeline five; 91. Pressure sensor; 92. Safety valve; 10. Diaphragm pump. Detailed Description of the Preferred Embodiments

[0020] The following is a more detailed description of the specific implementation of the present utility model with reference to the accompanying drawings and through the description of embodiments, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the concept and technical solution of the present utility model.

[0021] As Figures 1-4 shown, the present utility model provides an integrated device for automatically extracting electrolyte applied to a vanadium redox flow battery, including a mobile rack 1, a magnetic pump 2 and a diaphragm pump 10. Two magnetic pumps 2 are provided and symmetrically arranged on the mobile rack 1. Pulley 11 is respectively provided at the four corners of the bottom of the mobile rack 1, so as to facilitate moving the mobile rack 1 with the entire extraction device to the extraction position;

[0022] The liquid inlet of each magnetic pump 2 is connected to a liquid inlet pipe 3 through a liquid inlet ball valve 31, and two liquid level sensors 32 are arranged along the liquid inlet pipe 3;

[0023] The liquid outlet of each magnetic pump 2 is connected to the liquid inlet of the corresponding filter 5 on the mobile rack 1 through a pipe 1 4. The liquid outlet of the filter 5 is connected to a liquid outlet pipe 51, and a liquid outlet ball valve 52 is arranged on the liquid outlet pipe 51;

[0024] An electromagnetic valve 41 is arranged on each pipe 1 4. The lower sides of the two pipes 1 4 are connected through a pipe 2 6. Solenoid valves 61 are respectively installed on both sides of the pipe 2 6. The upper sides of the two pipes 1 4 are connected through a pipe 3 7. Solenoid valves 71 are respectively installed on both sides of the pipe 3 7. The pipe 2 6 is connected to the liquid inlet of the diaphragm pump 10 on the mobile rack 1 through a pipe 4 8. The pipe 3 7 and the pipe 4 8 are connected through a pipe 5 9. A pressure sensor 91 and a safety valve 92 are respectively installed on the pipe 5 9 from top to bottom, which can monitor the pressure value at the diaphragm pump 10 in real time to ensure the operation safety of the diaphragm pump 10 and the system. The liquid outlet of the diaphragm pump 10 is connected to the pipe 5 9.

[0025] Specific implementation method and principle:

[0026] During operation, the mobile rack 1 is moved to the position where the electrolyte is to be extracted, the liquid inlet pipe 3 is inserted into the electrolyte, the controller controls the solenoid valves 61 and 71 to open, and controls the diaphragm pump 10 to start to extract the electrolyte. When both liquid level sensors 32 on the liquid inlet pipe 3 detect the electrolyte, the solenoid valve 41 is opened and the diaphragm pump 10 is closed. Then, the solenoid valves 61 and 71 are controlled to close, and the magnetic pump 2 is opened. When both liquid level sensors 32 continuously detect the electrolyte, the magnetic pump 2 extracts the electrolyte into the filter 5 for filtration, and enters the storage tank through the liquid outlet ball valve 52 on the liquid outlet pipe 51. When both liquid level sensors 32 do not detect the electrolyte, the solenoid valve 41 is closed and the magnetic pump 2 stops, then the liquid extraction is completed.

[0027] The embodiments of the present utility model described above do not constitute a limitation on the protection scope of the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. An integrated device for automatic extraction of electrolyte applied to a vanadium redox flow battery, characterized in that: It includes a mobile rack (1), a magnetic pump (2) and a diaphragm pump (10). Two magnetic pumps (2) are provided and symmetrically arranged on the mobile rack (1). The liquid inlet of each magnetic pump (2) is connected to a liquid inlet pipe (3) through a liquid inlet ball valve (31). The liquid outlet of each magnetic pump (2) is connected to the liquid inlet of a corresponding filter (5) on the mobile rack (1) through a pipe one (4). The liquid outlet of the filter (5) is connected to a liquid outlet pipe (51). An electromagnetic valve one (41) is provided on each pipe one (4). The lower sides of the two pipes one (4) are connected through a pipe two (6). Solenoid valves two (61) are respectively installed on both sides of the pipe two (6). The upper sides of the two pipes one (4) are connected through a pipe three (7). Solenoid valves three (71) are respectively installed on both sides of the pipe three (7). The pipe two (6) is connected to the liquid inlet of the diaphragm pump (10) on the mobile rack (1) through a pipe four (8). The pipe three (7) and the pipe four (8) are connected through a pipe five (9). The liquid outlet of the diaphragm pump (10) is connected to the pipe five (9).

2. The integrated device for automatically extracting the electrolyte applied to the all-vanadium redox flow battery according to claim 1, wherein: Two liquid level sensors (32) are provided along the liquid inlet pipe (3).

3. The integrated device for automatically extracting electrolyte applied to a vanadium redox flow battery according to claim 1, characterized in that: A pressure sensor (91) and a safety valve (92) are respectively installed on the pipe five (9) from top to bottom.

4. An integrated device for automatically extracting electrolyte applied to a vanadium redox flow battery according to claim 1, characterized in that: A liquid outlet ball valve (52) is provided on the liquid outlet pipe (51).

5. An integrated device for automatically extracting electrolyte applied to a vanadium redox flow battery, characterized in that: Pulleys (11) are respectively provided at the four corners of the bottom of the mobile rack (1).

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