Waste liquid collecting pool of all-vanadium liquid flow energy storage power station

Abstract

The utility model relates to the technical field of chemical wastewater treatment, in particular to a waste liquid collecting pool of an all-vanadium liquid flow energy storage power station. The device comprises a liquid storage pool, a movable scraping plate, a sealing plate, a filter screen, a vertical movable pipe and a waste box, an upper through hole is formed in one end of the liquid storage tank; a bottom groove is formed in the bottom end of the inner side of the liquid storage tank; the movable scraping plate is slidably mounted on the inner side of the liquid storage pool, and a first driving assembly used for driving the movable scraping plate to move is mounted on the liquid storage pool; the waste box is arranged on the inner side of the bottom groove. The sealing plate is arranged at the upper end of the liquid storage pool, and a fixing rod is connected between the sealing plate and the waste box; a second driving assembly used for driving the sealing plate to ascend and descend is installed on the liquid storage pool. A floating plate is fixedly mounted at the bottom end of the vertical movable pipe, and a hose is communicated with the upper end of the vertical movable pipe; the filter screen is arranged at the bottom end inside the liquid storage tank. According to the technical scheme, solid substances and liquid precipitated in the liquid storage tank can be conveniently separated, so that subsequent treatment work is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of chemical wastewater treatment technology, and in particular to a waste liquid collection pool for a vanadium redox flow energy storage power station. Background Technology

[0002] Vanadium redox flow battery (VRFB) is a large-scale energy storage technology that stores and releases electrical energy through redox reactions of vanadium ions between different valence states. However, during operation, the electrolyte may generate waste liquid due to leaks, system maintenance, or disposal, containing vanadium compounds, sulfuric acid, and potential impurities. Improper handling of this waste liquid can pollute the environment and lead to a waste of vanadium resources. Therefore, designing an efficient waste liquid collection system is crucial for the safe operation and sustainable development of VRFB power plants.

[0003] In existing technologies, waste liquid from battery production needs to be discharged into a collection tank for sedimentation to achieve solid-liquid separation. However, the following difficulties exist in solid-liquid separation: 1. Since the thickness of the sediment cannot be predicted, the pumping pipe placed in the sedimentation tank needs to be manually observed before it is fixed, so that the pumping pipe is above the sediment, which is cumbersome; 2. Workers use tools to scrape the sediment at the bottom and pile it up in one place, which is difficult to transport out of the sedimentation tank. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a waste liquid collection pool for a vanadium redox flow energy storage power station.

[0005] The technical solution of this utility model is a waste liquid collection tank for a vanadium redox flow storage power station, which includes a storage tank, a movable scraper, a sealing plate, a filter screen, a vertical movable pipe, and a waste bin.

[0006] The liquid storage tank has an upper through hole at one end, and a bottom groove is provided at the bottom of the inner side of the liquid storage tank, located directly below the upper through hole. A movable scraper is slidably installed inside the liquid storage tank, and a first drive assembly for driving the movable scraper to move is installed on the liquid storage tank. The waste bin has an opening at the top and is located inside the bottom groove. A sealing plate is located at the top of the liquid storage tank and covers the upper through hole, and a fixed rod is connected between the sealing plate and the waste bin. A second drive assembly for driving the sealing plate to rise and fall is installed on the liquid storage tank. A vertical movable pipe movably passes through the sealing plate, and a float plate is fixedly installed at the bottom of the vertical movable pipe. A flexible hose is connected to the top of the vertical movable pipe. A filter screen is located at the bottom of the inner side of the liquid storage tank and adjacent to the bottom groove. A rectangular frame is installed around the filter screen, and a connecting rod is fixedly connected to the rectangular frame. An elastic telescopic rod assembly is connected between the upper end of the inner wall of the liquid storage tank and the connecting rod.

[0007] Preferably, the first drive assembly includes a second servo motor and a threaded rod. The upper part of the inner wall of the liquid storage tank has grooves at both ends. The two ends of the movable scraper are connected to connecting sliders. The two connecting sliders are slidably disposed in the grooves on both sides. The threaded rod is rotatably installed in one side groove and threadedly connected to the corresponding side connecting slider. The second servo motor is installed outside the liquid storage tank and its output shaft is connected to the threaded rod.

[0008] Preferably, a push rod is fixedly connected to the side of the movable scraper adjacent to the filter screen.

[0009] Preferably, the second drive assembly includes a first servo motor, a reel, and a winding rope. A gantry is provided on the liquid storage tank, and a sealing plate is slidably disposed on the gantry. The first servo motor is mounted on the upper end of the gantry, the reel is mounted on the output shaft of the first servo motor, one end of the winding rope is fixedly wound on the reel, and the winding rope movably passes through the upper end of the gantry and is fixedly connected to the sealing plate.

[0010] Preferably, the elastic telescopic rod assembly includes a sleeve, a movable rod, a spring, and a limiting block. The sleeve is fixedly connected to the upper end of the inner wall of the liquid storage tank, the movable rod is fixedly connected to the connecting rod, the end of the movable rod is movably disposed inside the sleeve and connected to the limiting block, and the spring is sleeved and installed on the movable rod.

[0011] Preferably, an inlet funnel is provided on the side of the liquid storage tank, and a connecting pipe is connected between the inlet funnel and the liquid storage tank, with an electrically controlled valve installed on the connecting pipe.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects: the present invention can facilitate the separation of precipitated solid matter and liquid in the storage tank, so as to facilitate subsequent processing. In addition, by setting up a movable vertical tube and a float, it can assist in detecting the liquid level and also prevent the bottom of the vertical tube from being inserted into the solid precipitate, thus preventing a large amount of solid precipitate from being carried out. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 and Figure 3 All of these are side sectional views of the present invention.

[0015] Figure 4 This is a top sectional view of the present invention.

[0016] Figure 5 This is a cross-sectional view of the elastic telescopic rod assembly in this utility model.

[0017] Reference numerals: 1. Storage tank; 101. Top through hole; 102. Bottom trough; 103. Slide chute; 2. Moving scraper; 3. Gantry frame; 4. Sealing plate; 5. Connecting slider; 6. Filter screen; 61. Rectangular frame; 7. Connecting rod; 81. Sleeve; 82. Movable rod; 83. Spring; 84. Limiting block; 9. Push rod; 10. Vertical movable tube; 11. Hose; 12. Float; 13. First servo motor; 14. Winding reel; 15. Winding rope; 16. Second servo motor; 17. Threaded rod; 18. Inlet funnel; 19. Connecting pipe; 20. Electrically controlled valve; 21. Fixed rod; 22. Waste bin. Detailed Implementation

[0018] Example 1

[0019] like Figures 1-3 As shown in the figure, the waste liquid collection tank of the vanadium redox flow storage power station proposed in this embodiment includes a storage tank 1, a movable scraper 2, a sealing plate 4, a filter screen 6, a vertical movable pipe 10, and a waste bin 22.

[0020] One end of the liquid storage tank 1 has an upper through hole 101, and the bottom end of the inner side of the liquid storage tank 1 has a bottom groove 102, which is located directly below the upper through hole 101. The movable scraper 2 is slidably installed inside the liquid storage tank 1. The liquid storage tank 1 is equipped with a first drive assembly for driving the movable scraper 2 to move. The first drive assembly has a second servo motor 16 and a threaded rod 17. Both ends of the upper part of the inner wall of the liquid storage tank 1 have sliding grooves 103. Both ends of the movable scraper 2 are connected to connecting sliders 5. The two connecting sliders 5 are slidably installed in the sliding grooves 103 on both sides. The threaded rod 17 is rotatably installed in one side of the sliding groove 103 and is threadedly connected to the corresponding side connecting slider 5. The second servo motor 16 is installed outside the liquid storage tank 1 and its output shaft is connected to the threaded rod 17. It is worth noting that it is necessary to ensure that the liquid level inside the liquid storage tank 1 does not exceed the bottom position of the sliding groove 103.

[0021] The waste bin 22 has an opening at the top and is located inside the bottom trough 102. The sealing plate 4 is located at the top of the liquid storage tank 1 and covers the through hole 101. A fixing rod 21 connects the sealing plate 4 and the waste bin 22. A second drive assembly for driving the sealing plate 4 to rise and fall is installed on the liquid storage tank 1. The second drive assembly includes a first servo motor 13, a reel 14, and a winding rope 15. A gantry frame 3 is provided on the liquid storage tank 1. The sealing plate 4 is slidably mounted on the gantry frame 3. The first servo motor 13 is mounted on the top of the gantry frame 3. The reel 14 is mounted on the output shaft of the first servo motor 13. One end of the winding rope 15 is fixedly wound around the reel 14. The winding rope 15 movably passes through the top of the gantry frame 3 and is fixedly connected to the sealing plate 4. A vertical movable tube 10 movably passes through the sealing plate 4. A float 12 is fixedly installed at the bottom of the vertical movable tube 10. A flexible hose 11 is connected to the top of the vertical movable tube 10.

[0022] The filter screen 6 is located at the bottom of the inner side of the liquid storage tank 1 and near the bottom tank 102. A rectangular frame 61 is installed on the outer periphery of the filter screen 6. The rectangular frame 61 is slidably mounted on the inner wall of the liquid storage tank 1. A connecting rod 7 is fixedly connected to the rectangular frame 61. An elastic telescopic rod assembly is connected between the upper end of the inner wall of the liquid storage tank 1 and the connecting rod 7. The elastic telescopic rod assembly includes a sleeve 81, a movable rod 82, a spring 83, and a limiting block 84. The sleeve 81 is fixedly connected to the upper end of the inner wall of the liquid storage tank 1. The movable rod 82 is fixedly connected to the connecting rod 7. The end of the movable rod 82 is movably located inside the sleeve 81 and connected to the limiting block 84. The spring 83 is sleeved on the movable rod 82. The setting of the elastic telescopic rod assembly allows the filter screen 6 to move a certain distance to the waste bin 22. After the cleaning work is completed, the filter screen 6 can be automatically driven to reset under the elastic force of the spring 83.

[0023] A push rod 9 is fixedly connected to one side of the movable scraper 2 adjacent to the filter screen 6. The push rod 9 can push the rectangular frame 61 to move during the movement. The push rod 9 makes a certain gap between the movable scraper 2 and the filter screen 6 to prevent solid sediment from being trapped between the movable scraper 2 and the filter screen 6, so that the sediment can fall naturally into the waste bin 22.

[0024] In this embodiment, the inner cavity of the storage tank 1 is completely sealed in the initial state, which isolates the flow of waste liquid inside the storage tank 1 from the air and improves safety (because battery waste liquid may volatilize acidic gases, organic solvent vapors, alkaline aerosols and other substances during storage).

[0025] Waste liquid settles inside storage tank 1, achieving solid-liquid separation for convenient subsequent classification and treatment. Float 12 floats on the liquid and changes with the liquid level. The movement of float 12 moves the vertical movable pipe 10. By observing the rise and fall of the vertical movable pipe 10, staff can roughly determine the liquid level inside storage tank 1. Furthermore, to improve observation accuracy, graduations can be set on the surface of the vertical movable pipe 10. The hose 11 is connected to the pump, and the pump is started. The liquid inside storage tank 1 is pumped through the vertical movable pipe 10 and the hose 11. The pump extracts the liquid, achieving separation. It should be noted that the float 12 is located above the inner side of the bottom tank 102, and the bottom of the vertical movable pipe 10 passes through the float 12. After the liquid on the side of the filter screen 6 away from the bottom tank 102 is pumped out, a small amount of liquid still exists in the upper part of the waste tank 22. The filter screen 6 is set to prevent solid matter on one side from flowing into the waste tank 22 during the pumping process, thus preventing the water inside the waste tank 22 from being stirred up. When the liquid inside the waste tank 22 is completely pumped out, the float 12 will not continue to move downward.

[0026] The first drive component drives the moving scraper 2 to move towards the waste bin 22. During the movement, the moving scraper 2 pushes the sediment at the bottom of the storage tank 1 into the waste bin 22, and then drives the moving scraper 2 to reset.

[0027] The second drive assembly drives the sealing plate 4 and the waste bin 22 to move upward synchronously, so that the waste bin 22 moves out from the inside of the upper through hole 101. Then, the staff can use tools to clean out the sediment inside the waste bin 22.

[0028] It should be added that the equipment is controlled by a PLC controller in this technical solution.

[0029] Example 2

[0030] like Figure 4 As shown in the figure, the waste liquid collection pool of the vanadium redox flow storage power station proposed in this embodiment has an inlet funnel 18 on the side of the storage pool 1 compared with the first embodiment. The inlet funnel 18 is connected to the storage pool 1 by a connecting pipe 19. An electrically controlled valve 20 is installed on the connecting pipe 19. When waste liquid is poured into the storage pool 1, the electrically controlled valve 20 is opened. After the waste liquid injection is completed, the electrically controlled valve 20 is closed, which can prevent a large amount of harmful substances inside the storage pool 1 from volatilizing into the air.

[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A waste liquid collection tank for a vanadium redox flow storage power station, characterized in that, It includes a liquid storage tank (1), a movable scraper (2), a sealing plate (4), a filter screen (6), a vertical movable pipe (10), and a waste bin (22); The liquid storage tank (1) has an upper through hole (101) at one end, and a bottom groove (102) is provided at the bottom of the inner side of the liquid storage tank (1), with the bottom groove (102) located directly below the upper through hole (101); a movable scraper (2) is slidably installed inside the liquid storage tank (1), and a first driving component for driving the movable scraper (2) to move is installed on the liquid storage tank (1); the waste bin (22) has an opening at the upper end, and the waste bin (22) is located inside the bottom groove (102); a sealing plate (4) is located at the upper end of the liquid storage tank (1) and covers the upper through hole (101), and a fixing rod is connected between the sealing plate (4) and the waste bin (22). 21); A second drive assembly for driving the sealing plate (4) to rise and fall is installed on the liquid storage tank (1); The vertical movable pipe (10) moves through the sealing plate (4), and a float plate (12) is fixedly installed at the bottom of the vertical movable pipe (10), and a hose (11) is connected to the upper end of the vertical movable pipe (10); The filter screen (6) is set at the bottom of the inner side of the liquid storage tank (1) and near the bottom trough (102), and a rectangular outer frame (61) is installed on the outer periphery of the filter screen (6), and a connecting rod (7) is fixedly connected on the rectangular outer frame (61). An elastic telescopic rod assembly is connected between the upper end of the inner wall of the liquid storage tank (1) and the connecting rod (7).

2. The waste liquid collection tank of a vanadium redox flow storage power station according to claim 1, characterized in that, The first drive assembly consists of a second servo motor (16) and a threaded rod (17). The upper part of the inner wall of the liquid storage tank (1) is provided with grooves (103) at both ends. The movable scraper (2) is connected to connecting sliders (5) at both ends. The two connecting sliders (5) are slidably arranged in the grooves (103) on both sides respectively. The threaded rod (17) is rotatably installed in the groove (103) on one side and threadedly connected to the corresponding connecting slider (5). The second servo motor (16) is installed outside the liquid storage tank (1) and its output shaft is connected to the threaded rod (17).

3. The waste liquid collection tank of a vanadium redox flow storage power station according to claim 1, characterized in that, A push rod (9) is fixedly connected to one side of the movable scraper (2) adjacent to the filter screen (6).

4. The waste liquid collection tank of a vanadium redox flow storage power station according to claim 1, characterized in that, The second drive assembly consists of a first servo motor (13), a reel (14), and a winding rope (15). A gantry (3) is provided on the liquid storage tank (1). A sealing plate (4) is slidably disposed on the gantry (3). The first servo motor (13) is installed on the upper end of the gantry (3). The reel (14) is installed on the output shaft of the first servo motor (13). One end of the winding rope (15) is fixedly wound on the reel (14). The winding rope (15) movably passes through the upper end of the gantry (3) and is fixedly connected to the sealing plate (4).

5. The waste liquid collection tank of a vanadium redox flow storage power station according to claim 1, characterized in that, The elastic telescopic rod assembly includes a sleeve (81), a movable rod (82), a spring (83), and a limiting block (84). The sleeve (81) is fixedly connected to the upper end of the inner wall of the liquid storage tank (1), the movable rod (82) is fixedly connected to the connecting rod (7), the end of the movable rod (82) is movably located inside the sleeve (81) and connected to the limiting block (84), and the spring (83) is sleeved and installed on the movable rod (82).

6. The waste liquid collection tank of a vanadium redox flow storage power station according to claim 1, characterized in that, A liquid inlet funnel (18) is provided on the side of the liquid storage tank (1), and a connecting pipe (19) is connected between the liquid inlet funnel (18) and the liquid storage tank (1). An electric control valve (20) is installed on the connecting pipe (19).

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