A multi-stage pumping simulation device for pumped storage in abandoned mines

Abstract

This invention discloses a multi-stage pumping simulation device for pumped-storage energy storage in abandoned mines, relating to the field of pumped-storage simulation technology. It includes a mounting base with a checkerboard-style side-mounted bracket arrayed on its upper side. The checkerboard-style side-mounted bracket array includes a bent pipe connection assembly, a straight pipe connection assembly, a clamping mechanism, a drive assembly, and a water source assembly. The clamping mechanism comprises a first positioning frame and a volute-shaped rubber block, with the volute-shaped rubber block rotatably mounted on the first positioning frame. This invention uses the arrayed checkerboard-style side-mounted bracket as the mounting frame for the pipeline. The bent pipe connection assembly, with its self-locking bending angle, combined with the straight pipe connection assembly, can construct a pipeline configuration that closely matches real-world conditions. This makes the pipeline construction more realistic, improving the intuitiveness and realism of the simulation. Furthermore, the device uses a clamping mechanism with significant error tolerance to hold the straight pipe connection assembly.

Description

Technical Field

[0001] This invention relates to the field of pumped storage simulation technology, specifically a multi-stage pumping simulation device for pumped storage in abandoned mines. Background Technology

[0002] With the deepening of energy structure transformation, large-scale energy storage technology has become crucial for absorbing intermittent renewable energy sources such as wind and solar power. Pumped storage, as the most mature, largest-capacity, and lowest-cost physical energy storage method, faces limitations in its development due to specific geographical conditions. Meanwhile, my country has a large number of abandoned mines, whose vast underground space resources urgently need development and utilization. Against this backdrop, the concept of converting abandoned mines into pumped storage power stations has emerged. This not only provides valuable energy storage capacity for the power grid but also offers a new path for the transformation of mining areas, achieving a win-win situation for both economic and ecological benefits.

[0003] However, pumped storage technology for abandoned mines is still in the exploratory stage. Compared with conventional pumped storage, the underground structure of mines is extremely complex, including vertical shafts, inclined shafts, multi-level roadways, and irregular goaf areas, and its hydrodynamic characteristics are drastically different from traditional systems. In particular, multi-stage pumping systems aim to use roadways of different depths as intermediate reservoirs to raise or lower the water level in stages, thereby optimizing efficiency and adapting to complex spatial structures. Currently, research on this technology mainly relies on numerical simulations, lacking a physical experimental platform that can realistically reflect the complex spatial structure and hydraulic characteristics of mines.

[0004] Existing fluid experiment devices are mostly fixed pipe systems or simple transparent water tanks, which cannot simulate the core characteristics of multi-level, variable head, and multi-stage energy conversion in mines. They are not very intuitive in the process of simulation teaching. Traditional pipe clamp fixing methods or vertical supports are difficult to meet the stability and vibration reduction requirements of complex three-dimensional pipe layouts, and it is not easy to establish a pipe layout similar to the actual situation. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-stage pumping simulation device for pumping and storage in abandoned mines, so as to solve the problems of insufficient realism and difficulty in constructing three-dimensional pipeline systems in existing pumping and storage simulation devices mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage pumping simulation device for pumping and storing water in an abandoned mine, comprising a mounting base, wherein a checkerboard-style side-mounted bracket is arrayed on the upper side of the mounting base, and the checkerboard-style side-mounted bracket is arrayed with a bent pipe connection assembly, a straight pipe connection assembly, a clamping mechanism, a driving assembly, and a water source assembly. The clamping mechanism includes a first positioning frame and a volute-shaped rubber block, wherein the volute-shaped rubber block is rotatably mounted on the first positioning frame, and the first positioning frame is inserted into the checkerboard-style side-mounted bracket.

[0007] A drive assembly, the drive assembly including a micro water turbine, the micro water turbine being mounted on a checkerboard-style side-mounted bracket;

[0008] A water source assembly includes a first limiting rod, a first mounting plate, and a water tank. The first limiting rod and the first mounting plate are two sets and fixedly connected. The water tank is movably disposed on the upper side of the first mounting plate.

[0009] Preferably, the bent pipe connection assembly includes two sets of connecting rigid pipes, a bent flexible hose, an installation swivel, a rotating ring, a rotating groove, a first hinge rod, a second hinge rod, and a threaded ring. The connecting rigid pipe and the bent flexible hose are connected. An installation swivel is movably disposed on the connecting rigid pipe. Two sets of rotating rings are fixedly installed on the inner side of the installation swivel, and ball bearings are rotatably mounted on the rotating rings in an array. Two sets of rotating grooves are opened on the connecting rigid pipe, and the rotating rings rotate within the rotating grooves. Two sets of first hinge rods are fixedly installed on one set of the installation swivel, and two sets of second hinge rods are fixedly installed on the other set of the installation swivel. The ends of the first and second hinge rods are rotatably connected. A threaded ring is fixedly installed on the end of the connecting rigid pipe, and the size of the threaded ring is adapted to the size of the threaded joint.

[0010] Preferably, the bend connection assembly further includes a ratchet, a first mounting box, a first movable groove, a pull block, a first guide rod, a first spring, a first guide hole, a connecting rod, a movable hole, a locking ring, a locking bolt, and a first damping pad. A ratchet is fixedly mounted at the pivot of the second hinge rod. A first mounting box is fixedly mounted on the first hinge rod. The first mounting box has two sets of first movable grooves. A pull block is movably inserted into the first mounting box. A first guide rod is fixedly mounted inside the first mounting box, and a first... The spring has a first guide hole on the pull block, the first guide rod is inserted into the first guide hole and the first spring abuts against the pull block, two sets of connecting rods are fixedly installed on the pull block, two sets of movable holes are opened on the first mounting box, the connecting rods are movably inserted into the movable holes, the same set of engaging rings are fixedly installed on the two sets of connecting rods, engaging bolts are fixedly installed on the engaging rings, the engaging bolts are engaged in the groove of the ratchet, and a first damping pad is fixedly installed on the inner side of the engaging ring, the first damping pad is in contact with the edge of the ratchet.

[0011] Preferably, the straight pipe connection assembly includes a transparent straight pipe, a fixed inner ring, a force equalizing ring, and a fixed outer ring. The fixed outer ring is fixedly installed on the left and right sides of the transparent straight pipe. Threaded joints are movably provided at both ends of the transparent straight pipe. The outer diameter of both ends of the transparent straight pipe is larger than the diameter of the middle section of the transparent straight pipe. Sealing gaskets are provided at both ends of the transparent straight pipe. The fixed inner ring is fixedly installed on the left and right sides of the transparent straight pipe. The force equalizing ring is fixedly installed on the fixed inner ring. The fixed outer ring is fixedly installed on the outer side of the force equalizing ring.

[0012] Preferably, the clamping mechanism includes a knob, a first gear, a second gear, a transmission rod, a first bevel gear, a worm, a second bevel gear, and a worm wheel. A knob is rotatably mounted on the first positioning frame, and a first gear is fixedly mounted on the knob. The first gear is rotatably mounted within the first positioning frame, and a second gear is rotatably mounted within the first positioning frame. The first and second gears mesh. A transmission rod is fixedly mounted on the second gear, and a first bevel gear is fixedly mounted at the end of the transmission rod. A worm is rotatably mounted within the first positioning frame, and a second bevel gear is fixedly mounted at the end of the worm. The second bevel gear meshes with the first bevel gear. A worm wheel is rotatably mounted within the first positioning frame, and the worm meshes with the worm wheel. The worm wheel and a worm-shaped rubber block are fixedly connected.

[0013] Preferably, the clamping mechanism further includes a mounting frame, a second guide rod, a first triangular block, a second guide hole, a second spring, and a first limiting side plate. The first positioning frame is fixedly mounted with the mounting frame. The second guide rod is fixedly mounted inside the mounting frame. The first triangular block is movably mounted inside the mounting frame. The first triangular block has a second guide hole. The second guide rod is movably inserted into the second guide hole. A second spring is sleeved on the second guide rod. The end of the second spring abuts against the first triangular block. Two sets of first limiting side plates are fixedly mounted inside the mounting frame. The side length of one end of the first positioning frame is greater than the side length of the upper frame of the checkerboard-style side-mounted bracket. The distance between the first triangular block and the end of the first positioning frame is adapted to the width of the checkerboard-style side-mounted bracket. The distance between the lower end of the first triangular block and the first limiting side plate is adapted to the height of the first triangular block.

[0014] Preferably, the drive assembly further includes a first connecting hose, a second positioning frame, a second limiting side plate, a second damping pad, a fixed middle plate, a third guide rod, a third spring, a movable plate, a third guide hole, and a locking block. The second positioning frame is fixedly installed on the rear side of the micro turbine, and two sets of locking blocks are movably installed on the rear side of the second positioning frame. The second positioning frame is inserted into a checkerboard-style side-mounted bracket. The first connecting hose is fixedly installed at both the outlet and inlet of the micro turbine. The outer diameter of the end of the first connecting hose is larger than the diameter of the middle section of the first connecting hose. A sealing pad is fixedly installed at the end of the first connecting hose, and threads are movably provided on the first connecting hose. The connector has two sets of second limiting side plates fixedly installed at the end of the second positioning frame. A second damping pad is fixedly installed on the second limiting side plate, and the second damping pad abuts against the checkerboard-style side-mounted bracket. A fixed middle plate is fixedly installed inside the second positioning frame. Third guide rods are fixedly installed on the upper and lower sides of the fixed middle plate, and each third guide rod is fitted with a third spring. Two sets of movable plates are movably installed inside the second positioning frame. Each movable plate has a third guide hole, and the movable plate is fitted onto the third guide rod through the third guide hole. The movable plate abuts against the third spring. A locking block is fixedly installed on the movable plate, and the locking block fits against the checkerboard-style side-mounted bracket.

[0015] Preferably, the water source assembly further includes a sliding block, a fourth guide hole, a sliding groove, a fourth guide rod, a mounting block, a second movable groove, a movable rod, a fourth spring, a second mounting plate, a first limiting plate, a second limiting plate, and a pulling belt. Two sets of sliding blocks are fixedly installed on one side of the water tank. Each sliding block has a fourth guide hole. Each of the first mounting plates has a sliding groove. A fourth guide rod is fixedly installed in the sliding groove. The sliding block slides in the sliding groove. The fourth guide rod is inserted into the fourth guide hole. A mounting block is provided between the two sets of sliding blocks. The mounting block is fixedly installed on the water tank. The mounting block is movably inserted between two sets of first mounting plates. A second movable groove is opened at the center of the mounting block, and a movable rod is movably inserted in the second movable groove. A fourth spring is sleeved on the movable rod, and the fourth spring abuts against the inner side of the second movable groove. A second mounting plate is fixedly installed on the movable rod. Two sets of first limiting plates are fixedly installed on the second mounting plate. Second limiting plates are fixedly installed in an array on the first mounting plate. The spacing of the second limiting plates is adapted to the thickness of the first limiting plates. The first limiting plates are inserted between the second limiting plates. A pull belt is fixedly installed on the second mounting plate.

[0016] Preferably, the water source assembly further includes a second connecting hose, a water pressure detector, a first fixing plate, and a second fixing plate. The second connecting hose is fixedly installed on both the upper and lower sides of the water tank. A threaded connector is movably provided at the end of the second connecting hose. The outer diameter of the end of the second connecting hose is larger than the diameter of the middle section of the second connecting hose. A sealing ring is fixedly installed at the end of the second connecting hose. A solenoid valve is provided at the other end of the second connecting hose and is fixedly installed on the water tank. A water pressure detector is fixedly installed on the lower side of the water tank. A first fixing plate is fixedly installed between the two sets of first mounting plates. A second fixing plate is fixedly installed at the ends of the two sets of first limiting rods. The maximum diameter of the threaded connector is smaller than the side length of the upper frame of the checkerboard-style side-mounted bracket. The water tank and the first limiting rods are not on the same side.

[0017] Preferably, a second limiting plate is fixedly installed on the lower side of the checkerboard-style side-mounted bracket, and limiting slots are arrayed on the mounting base. The second limiting plate and the first limiting rod are both inserted into the limiting slots. A second mounting box is fixedly installed on one side of the mounting base. A fifth spring is provided in each of the second mounting boxes. A second triangular block is movably inserted in the second mounting box. The second triangular block abuts against the fifth spring. The position of the second triangular block is opposite to the position of the limiting slot. A control panel is fixedly installed on the other side of the mounting base, and power sockets are arrayed on the upper side of the control panel.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention uses an array of checkerboard-style side-mounted brackets as the mounting frame for the pipe. By using a bend pipe connection component with self-locking bending angle, and in conjunction with a straight pipe connection component, a pipe configuration that adapts to the actual situation can be constructed, making the pipe construction more in line with the actual situation and improving the intuitiveness and realism of the simulation of the equipment. Furthermore, the equipment uses a clamping mechanism with a large fault tolerance to clamp the straight pipe connection component, so that the straight pipe connection component can be fixedly clamped whether it is installed close to the checkerboard-style side-mounted bracket or angled between two sets of checkerboard-style side-mounted brackets, which increases the stability and convenience of the equipment assembly.

[0019] 2. Through modular design, this invention enables the equipment to simulate multi-stage pumping, and the fixed installation of the water tank is independent of the chessboard-style side-mounted bracket. This not only avoids instability of the chessboard-style side-mounted bracket due to excessive weight of the water tank or weight changes during simulation, but also saves space on the chessboard-style side-mounted bracket by separating the water tank. Furthermore, it makes quantitative adjustment during equipment assembly and experimentation easier, increasing the functionality of the equipment during use. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the checkerboard-style side-mounted bracket provided in an embodiment of the present invention;

[0022] Figure 3 This is a structural schematic diagram of the bend pipe connection assembly provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structural separation at the bend connection assembly provided in an embodiment of the present invention;

[0024] Figure 5 This is a schematic cross-sectional view of the structure at the first mounting box provided in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the transparent straight tube provided in an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the structural separation at the fixed inner ring provided in an embodiment of the present invention;

[0027] Figure 8 This is a schematic cross-sectional view of the clamping mechanism provided in an embodiment of the present invention;

[0028] Figure 9 This is a schematic cross-sectional view of the drive component provided in an embodiment of the present invention;

[0029] Figure 10 This is a schematic cross-sectional view of the structure at the second mounting box provided in an embodiment of the present invention;

[0030] Figure 11 This is a structural schematic diagram of the water tank provided in an embodiment of the present invention;

[0031] Figure 12 This is a schematic cross-sectional view of the mounting block provided in an embodiment of the present invention.

[0032] In the diagram: 1. Mounting base; 2. Checkerboard-style side-mounted bracket; 3. Bent pipe connection assembly; 301. Connecting rigid pipe; 302. Bent flexible hose; 303. Mounting swivel; 304. Rotating ring; 305. Rotating groove; 306. First hinge rod; 307. Second hinge rod; 308. Threaded ring; 309. Ratchet; 310. First mounting box; 311. First movable groove; 312. Pull block; 313. First guide rod; 314. First spring; 315. First guide hole; 316. Connecting rod; 317. Movable hole; 318. Engaging ring; 319. Locking 320. First damping pad; 4. Straight pipe connection assembly; 401. Transparent straight pipe; 404. Fixed outer ring; 402. Fixed inner ring; 403. Force equalizing ring; 5. Threaded joint; 6. Clamping mechanism; 601. First positioning frame; 602. Volute-shaped rubber block; 603. Knob; 604. First gear; 605. Second gear; 606. Transmission rod; 607. First bevel gear; 608. Worm; 609. Second bevel gear; 610. Worm wheel; 611. Mounting frame; 612. Second guide rod; 613. First triangular block; 614. Second guide hole; 615, second spring; 616, first limiting side plate; 7, drive assembly; 701, micro water turbine; 702, first connecting hose; 703, second positioning frame; 704, second limiting side plate; 705, second damping pad; 706, fixed middle plate; 707, third guide rod; 708, third spring; 709, movable plate; 710, third guide hole; 711, locking block; 8, water source assembly; 801, first limiting long rod; 802, first mounting long plate; 803, water tank; 804, sliding block; 805, fourth guide hole 806. Sliding groove; 807. Fourth guide rod; 808. Mounting block; 809. Second movable groove; 810. Movable rod; 811. Fourth spring; 812. Second mounting plate; 813. First limiting plate; 814. Second limiting plate; 815. Pull belt; 816. Second connecting hose; 817. Water pressure detector; 818. First fixing plate; 819. Second fixing plate; 9. Second limiting plate; 10. Limiting groove; 11. Second mounting box; 12. Fifth spring; 13. Second triangular block; 14. Control panel; 15. Power socket. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-12The present invention provides a technical solution: a multi-stage pumping simulation device for pumping and storing water in an abandoned mine, including a mounting base 1, a checkerboard-style side-mounted bracket 2 is arrayed on the upper side of the mounting base 1, and the checkerboard-style side-mounted bracket 2 is arrayed with a bent pipe connection component 3, a straight pipe connection component 4, a clamping mechanism 6, a driving component 7 and a water source component 8. The bent pipe connection component 3 includes two sets of connecting rigid pipes 301 and bent flexible pipes 302, and the connecting rigid pipes 301 and bent flexible pipes 302 are connected.

[0035] Straight pipe connection assembly 4 includes a transparent straight pipe 401 and a fixed outer ring 404. The fixed outer ring 404 is fixedly installed on the left and right sides of the transparent straight pipe 401, and threaded joints 5 are movably provided at both ends of the transparent straight pipe 401.

[0036] The clamping mechanism 6 includes a first positioning frame 601 and a volute-shaped rubber block 602. The volute-shaped rubber block 602 is rotatably mounted on the first positioning frame 601. The first positioning frame 601 is inserted into the checkerboard-type side-mounted bracket 2.

[0037] Drive assembly 7 includes a micro water turbine 701, a second positioning frame 703 and a locking block 711. The second positioning frame 703 is fixedly installed on the rear side of the micro water turbine 701. Two sets of locking blocks 711 are movably installed on the rear side of the second positioning frame 703. The second positioning frame 703 is inserted into the checkerboard-style side-mounted bracket 2.

[0038] The water source component 8 includes a first limiting rod 801, a first mounting plate 802, and a water tank 803. The first limiting rod 801 and the first mounting plate 802 are two sets and fixedly connected. The water tank 803 is movably disposed on the upper side of the first mounting plate 802.

[0039] This equipment features a modular design, allowing for flexible assembly of the bend pipe connection component 3, straight pipe connection component 4, clamping mechanism 6, drive component 7, and water source component 8. This not only enables assembly between different functional components but also allows for three-dimensional assembly based on simulated real-world conditions, increasing the intuitiveness and realism of the equipment. Furthermore, the side-fixing method enhances the stability during assembly. The checkerboard-style side-mounted bracket 2 not only serves as a side mounting surface but also allows most pipes to pass through it, enabling it to act as a relay support during three-dimensional loading, thus increasing the equipment's functionality and stability during three-dimensional loading.

[0040] Furthermore, the bend pipe connection assembly 3 also includes a mounting ring 303, a rotating ring 304, a rotating groove 305, a first hinge rod 306, a second hinge rod 307, and a threaded ring 308. A mounting ring 303 is movably mounted on the connecting rigid pipe 301. Two sets of rotating rings 304 are fixedly mounted on the inner side of the mounting ring 303, and ball bearings are rotatably mounted on the rotating rings 304. Two sets of rotating grooves 305 are formed on the connecting rigid pipe 301, and the rotating rings 304 rotate within the rotating grooves 305. Two sets of first hinge rods 306 are fixedly mounted on one set of mounting rings 303, and two sets of second hinge rods 307 are fixedly mounted on the other set of mounting rings 303. The ends of the first hinge rods 306 and the second hinge rods 307 are rotatably connected. A threaded ring 308 is fixedly mounted on the end of the connecting rigid pipe 301, and the size of the threaded ring 308 is adapted to the size of the threaded connector 5. A schematic diagram of this structure is shown below. Figure 3 and Figure 4 This structure enables two sets of connecting rigid pipes 301 to bend in opposite directions. The key feature is that the connecting rigid pipes 301 can first be connected to the straight pipe connecting component 4 or the drive component 7, and then bend as needed, increasing the adaptability and convenience of the equipment. Furthermore, after the connecting rigid pipes 301 are bent relative to each other, the rotation of the mounting ring 303 is locked, increasing the stability of the equipment. This structure is used in conjunction with the straight pipe connecting component 4 because, in actual pipeline laying, the bending angle often varies due to different terrains. However, for cost and flow stability considerations, the pipeline is straight in most pipeline routes, with bends only appearing in certain areas. Therefore, the combination of the bending pipe connecting component 3 and the straight pipe connecting component 4 simulates pipeline transmission, balancing practical considerations and ease of assembly. Since the main body of the straight pipe connecting component 4 is a rigid pipe, the bending pipe connecting component 3 assembled on the straight pipe connecting component 4 does not require additional fixing when the straight pipe connecting component 4 is fixed, further increasing the convenience of the equipment.

[0041] Furthermore, the bend pipe connection assembly 3 also includes a ratchet 309, a first mounting box 310, a first movable groove 311, a pull block 312, a first guide rod 313, a first spring 314, a first guide hole 315, a connecting rod 316, a movable hole 317, a locking ring 318, a locking bolt 319, and a first damping pad 320. A ratchet 309 is fixedly installed at the pivot of the second hinge rod 307. A first mounting box 310 is fixedly installed on the first hinge rod 306. Two sets of first movable grooves 311 are provided on the first mounting box 310. A pull block 312 is movably inserted into the first mounting box 310. A first guide rod 313 is fixedly installed inside the first mounting box 310. A sleeve is fitted on the first guide rod 313. A first spring 314 is connected to the pull block 312, which has a first guide hole 315. A first guide rod 313 is inserted into the first guide hole 315, and the first spring 314 abuts against the pull block 312. Two sets of connecting rods 316 are fixedly installed on the pull block 312. Two sets of movable holes 317 are opened on the first mounting box 310, and the connecting rods 316 are movably inserted into the movable holes 317. The same set of engaging rings 318 are fixedly installed on the two sets of connecting rods 316. Engaging bolts 319 are fixedly installed on the engaging rings 318, and the engaging bolts 319 engage in the groove of the ratchet 309. A first damping pad 320 is fixedly installed on the inner side of the engaging rings 318, and the first damping pad 320 is in contact with the edge of the ratchet 309. A schematic diagram of this structure is shown below. Figure 4 and Figure 5 The structure is a locking structure in which the first hinge rod 306 and the second hinge rod 307 rotate relative to each other. The main locking method is to insert the locking bolt 319 into the groove on the edge of the ratchet 309 for limiting and locking. The auxiliary locking method is that the first damping pad 320 squeezes the edge of the ratchet 309, and the deformation increases the contact area between the first damping pad 320 and the ratchet 309, thereby increasing the friction between the locking ring 318 and the ratchet 309, and assisting in locking the relative rotation of the first hinge rod 306 and the second hinge rod 307. This locking method makes the rotational locking between the first hinge rod 306 and the second hinge rod 307 more stable. In addition, since the water flow at the bend pipe connection assembly 3 is relatively rapid, the water flow through the bend pipe connection assembly 3 will cause it to generate more frequent small vibrations. The first damping pad 320 can reduce the adverse effects of such vibrations on the structural stability of the bend pipe connection assembly 3 through its own flexibility.

[0042] Furthermore, the straight pipe connection assembly 4 also includes a fixing inner ring 402 and a force equalizing ring 403. The outer diameters of both ends of the transparent straight pipe 401 are larger than the diameter of the middle section of the transparent straight pipe 401. Sealing gaskets are provided at both ends of the transparent straight pipe 401. Fixing inner rings 402 are fixedly installed on the left and right sides of the transparent straight pipe 401. Force equalizing rings 403 are fixedly installed on the fixing inner rings 402. Fixing outer rings 404 are fixedly installed on the outer side of the force equalizing rings 403. A schematic diagram of this structure is shown below. Figure 6 and Figure 7 The threaded connector 5 at the end of the transparent straight pipe 401 is a common water pipe connector. Its end shape is adapted to the installation requirements. The water pipes equipped with the threaded connector 5, whether flexible or rigid, all have corresponding shapes. The transparent straight pipe 401 is an important component of the entire pipeline. When equipped, it is fitted with straight pipe connection assemblies 4 of different lengths, thus enabling flexible assembly of the pipeline system. The functions of the inner fixing ring 402, the force equalizing ring 403, and the outer fixing ring 404 are, on the one hand, to reduce the direct compression of the transparent straight pipe 401 by the clamping mechanism 6 when clamping it. This compression can be evenly distributed by the inner fixing ring 402, the force equalizing ring 403, and the outer fixing ring 404 through their annular shape, which is beneficial for the long-term use of the transparent straight pipe 401. On the other hand, the coefficient of friction between the outer fixing ring 404 and the volute-shaped rubber block 602 is relatively high, which helps to reduce the friction between the transparent straight pipe 401 and the volute-shaped rubber block 602. When the tube 401 is placed between two sets of checkerboard-style side-mounted brackets 2, the clamping mechanism 6 can still stably clamp the transparent straight tube 401. Moreover, the fixed outer ring 404 can also separate the transparent straight tube 401 from the checkerboard-style side-mounted brackets 2, so that the transparent straight tube 401 does not contact the checkerboard-style side-mounted brackets 2. This not only allows the water flow inside the transparent straight tube 401 to be better observed, but also makes the vibration of the transparent straight tube 401 less likely to affect the checkerboard-style side-mounted brackets 2, increasing the stability of the equipment during use. After actual assembly, the transparent straight tube 401 is connected to the drive assembly 7 and the water source assembly 8 through the bend pipe connecting component 3. The drive assembly 7 and the water source assembly 8 are fixed on the checkerboard-style side-mounted brackets 2 or the mounting base 1, so they are fixed after connection. The function of the clamping mechanism 6 is to further stabilize the transparent straight tube 401.

[0043] Furthermore, the clamping mechanism 6 includes a knob 603, a first gear 604, a second gear 605, a transmission rod 606, a first bevel gear 607, a worm gear 608, a second bevel gear 609, and a worm wheel 610. A knob 603 is rotatably mounted on the first positioning frame 601, and a first gear 604 is fixedly mounted on the knob 603. The first gear 604 is rotatably mounted inside the first positioning frame 601, and a second gear 605 is rotatably mounted inside the first positioning frame 601. The first gear 604 and the second gear 605... 05. A transmission rod 606 is fixedly mounted on the second gear 605. A first bevel gear 607 is fixedly mounted at the end of the transmission rod 606. A worm gear 608 is rotatably mounted inside the first positioning frame 601. A second bevel gear 609 is fixedly mounted at the end of the worm gear 608, meshing with the first bevel gear 607. A worm wheel 610 is rotatably mounted inside the first positioning frame 601, meshing with the worm gear 608. The worm wheel 610 and the worm-shaped rubber block 602 are fixedly connected. A schematic diagram of this structure is shown below. Figure 8This structure allows the volute-shaped rubber block 602 to rotate, and this rotation has a self-locking capability. The transmission between the worm 608 and the worm wheel 610 also has a self-locking capability. The number of teeth of the first gear 604 is greater than the number of teeth of the second gear 605, which allows the worm 608 to be rotated faster, increasing the convenience of using the equipment. In actual use, the rotation of the knob 603 is not synchronized with the rotation of the volute-shaped rubber block 602. The knob 603 needs to be rotated more times to drive the volute-shaped rubber block 602 to rotate once. This transmission ratio is beneficial for the volute-shaped rubber block 602 to press tightly against the fixed outer ring 404, making it easier for the user to rotate the knob 603. In terms of structural layout, the transmission structure is concentrated on the lower side of the first positioning frame 601, which makes room for the subsequent installation of the first triangular block 613 and increases the utilization efficiency of the space inside the first positioning frame 601.

[0044] Furthermore, the clamping mechanism 6 also includes a mounting frame 611, a second guide rod 612, a first triangular block 613, a second guide hole 614, a second spring 615, and a first limiting side plate 616. The mounting frame 611 is fixedly mounted on the first positioning frame 601. The second guide rod 612 is fixedly mounted inside the mounting frame 611. The first triangular block 613 is movably mounted inside the mounting frame 611. The first triangular block 613 has a second guide hole 614, and the second guide rod 612 is movably inserted into the second guide hole 614. A second spring 615 is sleeved on the rod 612. The end of the second spring 615 abuts against the first triangular block 613. Two sets of first limiting side plates 616 are fixedly installed inside the mounting frame 611. The side length of one end of the first positioning frame 601 is greater than the side length of the upper frame of the chessboard-type side mounting bracket 2. The distance between the first triangular block 613 and the end of the first positioning frame 601 is adapted to the width of the chessboard-type side mounting bracket 2. The distance between the lower end of the first triangular block 613 and the first limiting side plate 616 is adapted to the height of the first triangular block 613. The schematic diagram of this structure shows the telescopic structure of the first triangular block 613, which efficiently utilizes the internal space of the first positioning frame 601. The inclined shape of the first triangular block 613 also makes it easier for the first positioning frame 601 to be inserted into the checkerboard-style side-mounted bracket 2. The reason for this simple one-sided fixing method is that during the use of the clamping mechanism 6, the volute-shaped rubber block 602 abuts against the fixing outer ring 404, so that the first positioning frame 601 and the inner wall of the checkerboard-style side-mounted bracket 2 are tightly fitted. The friction between the first positioning frame 601 and the inner wall of the checkerboard-style side-mounted bracket 2 can stabilize the first positioning frame 601. The limiting function of the first triangular block 613 is not its main limiting method. In terms of functionality, it is more of a safety measure. Therefore, the simple design increases its ease of use.

[0045] Furthermore, the drive assembly 7 also includes a first connecting hose 702, a second limiting side plate 704, a second damping pad 705, a fixed middle plate 706, a third guide rod 707, a third spring 708, a movable plate 709, and a third guide hole 710. The first connecting hose 702 is fixedly installed at both the outlet and inlet of the micro turbine 701. The outer diameter of the end of the first connecting hose 702 is larger than the diameter of the middle section of the first connecting hose 702. A sealing pad is fixedly installed at the end of the first connecting hose 702. A threaded connector 5 is movably provided on the first connecting hose 702. Two sets of second limiting side plates 704 are fixedly installed at the end of the second positioning frame 703. A second damping pad 705 is fixedly installed on the upper part of the bracket, abutting against the checkerboard-style side-mounted bracket 2. A fixed middle plate 706 is fixedly installed inside the second positioning frame 703. Third guide rods 707 are fixedly installed on the upper and lower sides of the fixed middle plate 706, and third springs 708 are sleeved on each of the third guide rods 707. Two sets of movable plates 709 are movably installed inside the second positioning frame 703. The movable plates 709 have third guide holes 710. The movable plates 709 are sleeved on the third guide rods 707 through the third guide holes 710. The movable plates 709 abut against the third springs 708. A locking block 711 is fixedly installed on the movable plates 709, and the locking block 711 fits against the checkerboard-style side-mounted bracket 2. A schematic diagram of this structure is shown below. Figure 9 This structure allows the micro turbine 701 to be assembled on the checkerboard-style side-mounted bracket 2, and the micro turbine 701 can communicate with the bend connection assembly 3. The reason for connecting to the bend connection assembly 3 instead of directly connecting to the straight pipe connection assembly 4 is that the inlet and outlet of the micro turbine 701 are not necessarily parallel to the straight pipe connection assembly 4. Direct connection of the hose might result in a large bending angle, which would be uncontrollable under water flow, adversely affecting the stability of the water flow and contradicting actual installation conditions. Connecting through the bend connection assembly 3 fixes the path of the pipe after connection. Although there is a hose, it is only near the micro turbine 701 or the water tank 803, and there are multiple points of connection after connection. In a taut state, its own deformation has little impact on the water flow. This structure is similar to the function of the first triangular block 613 in the clamping mechanism 6, but the structure is different because the vibration amplitude of the micro water turbine 701 is greater than that of the transparent straight pipe 401. Also, the upper side of the locking block 711 is curved, which can increase the stability of the micro water turbine 701 during installation by pressing the second damping pad 705 tightly. In addition, the movement of the two sets of locking blocks 711 is independent for the vibration of the micro water turbine 701. The movement between the two sets of locking blocks 711 does not interfere with each other, so the possibility of the two sets of locking blocks 711 failing at the same time is extremely small, which further increases the stability of the equipment during use.

[0046] Furthermore, the water source component 8 also includes a sliding block 804, a fourth guide hole 805, a sliding groove 806, a fourth guide rod 807, a mounting block 808, a second movable groove 809, a movable rod 810, a fourth spring 811, a second mounting plate 812, a first limiting plate 813, a second limiting plate 814, and a pulling belt 815. Two sets of sliding blocks 804 are fixedly installed on one side of the water tank 803. Each sliding block 804 has a fourth guide hole 805. Each first mounting plate 802 has a sliding groove 806. A fourth guide rod 807 is fixedly installed in the sliding groove 806. The sliding block 804 slides in the sliding groove 806, and the fourth guide rod 807 is inserted into the fourth guide hole 805. A mounting block 808 is provided between the two sets of sliding blocks 804. The mounting block 808 is fixedly installed. Mounted on water tank 803, mounting block 808 is movably inserted between two sets of first mounting plates 802. A second movable groove 809 is formed at the center of mounting block 808, and a movable rod 810 is movably inserted within the second movable groove 809. A fourth spring 811 is sleeved on the movable rod 810, and the fourth spring 811 abuts against the inner side of the second movable groove 809. A second mounting plate 812 is fixedly mounted on the movable rod 810. Two sets of first limiting plates 813 are fixedly mounted on the second mounting plate 812. Second limiting plates 814 are fixedly mounted in an array on the first mounting plate 802, with the spacing of the second limiting plates 814 matching the thickness of the first limiting plates 813. The first limiting plates 813 are inserted between the second limiting plates 814. A pulling strap 815 is fixedly mounted on the second mounting plate 812. A schematic diagram of this structure is shown below. Figure 12 This structure allows the water tank 803 to move stably on the first mounting plate 802 and to be fixed in place, thereby allowing the height of the water tank 803 to be adjusted. Multiple sets of water source components 8 can be set on the mounting base 1 to form multi-level water tanks of different heights, enabling the equipment to conduct multi-level pumping and energy storage experiments. At the same time, this structure also separates the water tank 803 from the checkerboard-style side-mounted bracket 2, making the layout of the pipeline and the layout of the water tank 803 relatively independent, increasing the convenience of equipment assembly and the stability of the water tank 803 during use.

[0047] Furthermore, the water source component 8 also includes a second connecting hose 816, a water pressure detector 817, a first fixing plate 818, and a second fixing plate 819. The second connecting hose 816 is fixedly installed on both the upper and lower sides of the water tank 803. A threaded connector 5 is movably provided at the end of the second connecting hose 816. The outer diameter of the end of the second connecting hose 816 is larger than the diameter of the middle section of the second connecting hose 816. A sealing ring is fixedly installed at the end of the second connecting hose 816. A solenoid valve is provided at the other end of the second connecting hose 816 and is fixedly installed on the water tank 803. A water pressure detector 817 is fixedly installed on the lower side of the water tank 803. A first fixing plate 818 is fixedly installed between two sets of first mounting plates 802. A second fixing plate 819 is fixedly installed at the ends of two sets of first limiting rods 801. The maximum diameter of the threaded connector 5 is smaller than the side length of the upper frame of the checkerboard-style side-mounted bracket 2. The water tank 803 and the first limiting rods 801 are not on the same side. A schematic diagram of this structure is shown below. Figure 11 and Figure 12 The first limiting rod 801 does not have a limiting structure in its movement within the limiting groove 10. This is because the structure on the first limiting rod 801 is relatively heavy, and only weight changes occur during use, resulting in less vibration. It can remain stable when placed normally. On the other hand, the weight of the water tank 803 itself will apply an upward force to the first limiting rod 801 through the lever principle, thereby stabilizing the position of the first limiting rod 801. The first fixing plate 818 can not only connect the two sets of first mounting plates 802, but also strengthen the connection between the first limiting rod 801 and the first mounting plate 802, increasing the structural strength of the water source component 8.

[0048] Furthermore, a second limiting plate 9 is fixedly installed on the lower side of the checkerboard-style side-mounted bracket 2. Limiting slots 10 are arrayed on the mounting base 1, and the second limiting plate 9 and the first limiting rod 801 are both inserted into the limiting slots 10. A second mounting box 11 is fixedly installed on one side of the mounting base 1, and a fifth spring 12 is provided inside each of the second mounting boxes 11. A second triangular block 13 is movably inserted into the second mounting box 11, abutting against the fifth spring 12. The position of the second triangular block 13 is opposite to the position of the limiting slot 10. A control panel 14 is fixedly installed on the other side of the mounting base 1, and power sockets 15 are arrayed on the upper side of the control panel 14. A schematic diagram of this structure is shown below. Figure 10 The structure is a chessboard-style side-mounted bracket 2 and a water source component 8 installation structure. The position of the second limiting plate 9 is limited by the second triangular block 13. The power cords of the water pressure detector 817, the micro water turbine 701, etc. can also be arranged on the chessboard-style side-mounted bracket 2 for storage and connected to the control panel 14.

[0049] Working principle: When using this invention, the second limiting plate 9 is inserted into the limiting groove 10 for installation. Then, the threaded connector 5 on the transparent straight pipe 401 is screwed onto the threaded ring 308, so that the connecting rigid pipe 301 and the transparent straight pipe 401 are connected. Alternatively, the water tank 803 or the micro water turbine 701 can be connected to the bent pipe connecting assembly 3 in the same way. After connection, the rotating ring 303 can be rotated to rotate the first hinge rod 306 and the second hinge rod 307 to a suitable angle. Then, the pulling block 312 is pulled to disengage the locking ring 318 from the ratchet 309, so that the first hinge rod 306 and the second hinge rod 307 can rotate to a suitable angle. Then, the pulling block 312 is released, and under the recoil action of the first spring 314, the locking bolt 319 is re-engaged at the edge of the ratchet 309, thereby completing the locking of the relative rotation of the first hinge rod 306 and the second hinge rod 307.

[0050] When installing the clamping mechanism 6, the first positioning frame 601 is pushed into the square frame of the checkerboard-style side-mounted bracket 2. At this time, guided by the inclined surface of the first triangular block 613, the first triangular block 613 retracts into the mounting frame 611 until the edge of the first positioning frame 601 contacts the checkerboard-style side-mounted bracket 2. The first triangular block 613 is no longer pressed by the checkerboard-style side-mounted bracket 2, and the first positioning frame 601 is limited under the rebound action of the second spring 615. After the clamping mechanism 6 is installed in the appropriate position, the knob 603 is rotated, which causes the first gear 604 to rotate and drive the second gear 605 to rotate, which in turn drives the first bevel gear 607 to rotate. Through meshing with the second bevel gear 609, the worm gear 608 is driven to rotate, thereby driving the worm wheel 610 to rotate, which causes the volute-shaped rubber block 602 to rotate. The volute-shaped rubber block 602 fixes the outer ring 404 by its own shape and elasticity, thereby fixing the transparent straight tube 401.

[0051] When installing the drive assembly 7, press the locking block 711 towards each other until it can pass through the checkerboard side mounting bracket 2. Then, insert the second positioning frame 703 into the square frame of the checkerboard side mounting bracket 2. Under the rebound action of the third spring 708, the locking block 711 abuts against one side of the checkerboard side mounting bracket 2. At the same time, the second damping pad 705 is pressed tightly on the checkerboard side mounting bracket 2, thus completing the fixed installation of the micro water turbine 701.

[0052] When adjusting the height of the water tank 803, pull the pull belt 815, causing the movable rod 810 to move within the second movable groove 809 and compress the fourth spring 811, thereby causing the first limiting plate 813 to disengage from the second limiting plate 814, allowing the water tank 803 to move up and down. The same applies to fixing.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage pumping simulation device for pumped storage in abandoned mines, comprising a mounting base (1), wherein a checkerboard-style side-mounted bracket (2) is arrayed on the upper side of the mounting base (1), and the checkerboard-style side-mounted bracket (2) is arrayed with a bent pipe connection assembly (3), a straight pipe connection assembly (4), a clamping mechanism (6), a driving assembly (7), and a water source assembly (8), characterized in that: The bent pipe connection assembly (3) includes two sets of connecting rigid pipes (301), a bent flexible hose (302), a mounting ring (303), a first hinge rod (306), a second hinge rod (307), a ratchet (309), a first spring (314), a locking ring (318), and a first damping pad (320). A mounting ring (303) is movably mounted on the connecting rigid pipe (301). One set of the mounting ring (303) has two sets of first hinge rods (306) fixedly mounted on it. The other set of the mounting ring (307) has... Two sets of second hinge rods (307) are fixedly installed on the rotating ring (303). The ends of the first hinge rod (306) and the second hinge rod (307) are rotatably connected. A threaded ring (308) is fixedly installed on the end of the connecting rigid tube (301). A ratchet (309) is fixedly installed at the pivot of the second hinge rod (307). A first damping pad (320) is fixedly installed on the inner side of the engaging ring (318). The first damping pad (320) is in contact with the edge of the ratchet (309). The straight pipe connection assembly (4) includes a transparent straight pipe (401), and threaded joints (5) are movably provided at both ends of the transparent straight pipe (401). The outer diameter of both ends of the transparent straight pipe (401) is larger than the diameter of the middle section of the transparent straight pipe (401). The clamping mechanism (6) includes a first positioning frame (601) and a volute-shaped rubber block (602). The volute-shaped rubber block (602) is rotatably mounted on the first positioning frame (601). The first positioning frame (601) is inserted into the chessboard-style side-mounted bracket (2). The clamping mechanism (6) further includes a knob (603), a first gear (604), a second gear (605), a transmission rod (606), a first bevel gear (607), a worm (608), a second bevel gear (609), and a worm wheel (610). A knob (603) is rotatably mounted on the first positioning frame (601). A first gear (604) is fixedly mounted on the knob (603). The first gear (604) is rotatably mounted within the first positioning frame (601). A second gear (605) is rotatably mounted within the first positioning frame (601). The first gear (604) and the second gear (605)... The gears are meshed, and a transmission rod (606) is fixedly installed on the second gear (605). A first bevel gear (607) is fixedly installed at the end of the transmission rod (606). A worm gear (608) is rotatably installed in the first positioning frame (601). A second bevel gear (609) is fixedly installed at the end of the worm gear (608). The second bevel gear (609) meshes with the first bevel gear (607). A worm wheel (610) is rotatably installed in the first positioning frame (601). The worm gear (608) meshes with the worm wheel (610). The worm wheel (610) and the worm-shaped rubber block (602) are fixedly connected. The drive assembly (7) includes a micro turbine (701) mounted on a checkerboard side-mounted bracket (2); Water source component (8), the water source component (8) includes a first limiting rod (801), a first mounting plate (802) and a water tank (803). The first limiting rod (801) and the first mounting plate (802) are two sets and fixedly connected. The water tank (803) is movably arranged on the upper side of the first mounting plate (802).

2. The multi-stage pumping simulation device for pumped storage in abandoned mines according to claim 1, characterized in that: The bend connection assembly (3) further includes a rotating ring (304), a rotating groove (305), and a threaded ring (308). The connecting rigid pipe (301) and the bendable flexible pipe (302) are connected. Two sets of rotating rings (304) are fixedly installed on the inner side of the mounting ring (303), and ball bearings are arranged in an array on the rotating rings (304). Two sets of rotating grooves (305) are opened on the connecting rigid pipe (301). The rotating rings (304) rotate in the rotating grooves (305). The size of the threaded ring (308) is adapted to the size of the threaded connector (5).

3. The multi-stage pumping simulation device for pumped storage in abandoned mines according to claim 2, characterized in that: The bent pipe connection assembly (3) further includes a first mounting box (310), a first movable groove (311), a pull block (312), a first guide rod (313), a first guide hole (315), a connecting rod (316), a movable hole (317), and a locking bolt (319). The first mounting box (310) is fixedly installed on the first hinge rod (306). Two sets of first movable grooves (311) are opened on the first mounting box (310). The pull block (312) is movably inserted into the first mounting box (310). The first guide rod (313) is fixedly installed in the first mounting box (310). A first spring (314) is sleeved on the first guide rod (313). The pull block (312) has a first guide hole (315), the first guide rod (313) is inserted into the first guide hole (315) and the first spring (314) abuts against the pull block (312). Two sets of connecting rods (316) are fixedly installed on the pull block (312). Two sets of movable holes (317) are opened on the first mounting box (310). The connecting rods (316) are movably inserted into the movable holes (317). The same set of locking rings (318) are fixedly installed on the two sets of connecting rods (316). A locking bolt (319) is fixedly installed on the locking ring (318). The locking bolt (319) is engaged in the groove of the ratchet (309).

4. The multi-stage pumping simulation device for pumped storage in abandoned mines according to claim 1, characterized in that: The straight pipe connection assembly (4) further includes a fixed inner ring (402), a force equalizing ring (403), and a fixed outer ring (404). The fixed outer ring (404) is fixedly installed on the left and right sides of the transparent straight pipe (401). Sealing gaskets are provided at both ends of the transparent straight pipe (401). The fixed inner ring (402) is fixedly installed on the left and right sides of the transparent straight pipe (401). The force equalizing ring (403) is fixedly installed on the fixed inner ring (402). The fixed outer ring (404) is fixedly installed on the outside of the force equalizing ring (403).

5. A multi-stage pumping simulation device for pumped storage in abandoned mines according to claim 1, characterized in that: The clamping mechanism (6) further includes a mounting frame (611), a second guide rod (612), a first triangular block (613), a second guide hole (614), a second spring (615), and a first limiting side plate (616). The first positioning frame (601) is fixedly mounted with the mounting frame (611). The second guide rod (612) is fixedly mounted inside the mounting frame (611). The first triangular block (613) is movably mounted inside the mounting frame (611). The first triangular block (613) has a second guide hole (614). The second guide rod (612) is movably inserted into the second guide hole (614). A second spring (615) is sleeved on the two guide rods (612). The end of the second spring (615) abuts against the first triangular block (613). Two sets of first limiting side plates (616) are fixedly installed inside the mounting frame (611). The side length of one end of the first positioning frame (601) is greater than the side length of the upper frame of the chessboard-type side mounting bracket (2). The distance between the end of the first triangular block (613) and the first positioning frame (601) is adapted to the width of the chessboard-type side mounting bracket (2). The distance between the lower end of the first triangular block (613) and the first limiting side plate (616) is adapted to the height of the first triangular block (613).

6. A multi-stage pumping simulation device for pumped storage in abandoned mines according to claim 1, characterized in that: The drive assembly (7) further includes a first connecting hose (702), a second positioning frame (703), a second limiting side plate (704), a second damping pad (705), a fixed middle plate (706), a third guide rod (707), a third spring (708), a movable plate (709), a third guide hole (710), and a locking block (711). The second positioning frame (703) is fixedly installed on the rear side of the micro turbine (701), and a locking block (711) is movably installed on the rear side of the second positioning frame (703). Two sets of locking blocks (711), the second positioning frame (703) is inserted into the checkerboard-style side-mounted bracket (2), the outlet and inlet of the micro water turbine (701) are both fixedly installed with a first connecting hose (702), the outer diameter of the end of the first connecting hose (702) is larger than the diameter of the middle section of the first connecting hose (702), the end of the first connecting hose (702) is fixedly installed with a sealing gasket, and a threaded joint (5) is movably provided on the first connecting hose (702). Two sets of second limiting side plates (704) are fixedly installed at the end of the second positioning frame (703). A second damping pad (705) is fixedly installed on the second limiting side plate (704). The second damping pad (705) abuts against the checkerboard-style side-mounted bracket (2). A fixed middle plate (706) is fixedly installed inside the second positioning frame (703). A third guide rod (707) is fixedly installed on the upper and lower sides of the fixed middle plate (706). A third guide rod (707) is sleeved on each of the third guide rods (707). The spring (708) and the second positioning frame (703) are movably installed with two sets of movable plates (709). The movable plates (709) are provided with a third guide hole (710). The movable plates (709) are sleeved on the third guide rod (707) through the third guide hole (710). The movable plates (709) abut against the third spring (708). The movable plates (709) are fixedly installed with a locking block (711). The locking block (711) fits against the chessboard-type side-mounted bracket (2).

7. A multi-stage pumping simulation device for pumped storage in abandoned mines according to claim 1, characterized in that: The water source assembly (8) further includes a sliding block (804), a fourth guide hole (805), a sliding groove (806), a fourth guide rod (807), a mounting block (808), a second movable groove (809), a movable rod (810), a fourth spring (811), a second mounting plate (812), a first limiting plate (813), a second limiting plate (814), and a pulling belt (815). Two sets of sliding blocks (804) are fixedly installed on one side of the water tank (803). Each movable block (804) is provided with a fourth guide hole (805), and each of the first mounting plates (802) is provided with a sliding groove (806). A fourth guide rod (807) is fixedly installed in the sliding groove (806). The movable block (804) slides in the sliding groove (806), and the fourth guide rod (807) is inserted in the fourth guide hole (805). An mounting block (808) is provided between the two sets of movable blocks (804), and the mounting block (808) is fixedly installed. Mounted on a water tank (803), the mounting block (808) is movably inserted between two sets of first mounting plates (802). A second movable groove (809) is provided at the center of the mounting block (808), and a movable rod (810) is movably inserted in the second movable groove (809). A fourth spring (811) is sleeved on the movable rod (810), and the fourth spring (811) abuts against the inner side of the second movable groove (809). The movable rod (810) is fixedly mounted on... There is a second mounting plate (812), on which two sets of first limiting plates (813) are fixedly mounted. On the first mounting plate (802), second limiting plates (814) are fixedly mounted in an array. The spacing of the second limiting plates (814) is adapted to the thickness of the first limiting plates (813). The first limiting plates (813) are inserted between the second limiting plates (814). A pull belt (815) is fixedly mounted on the second mounting plate (812).

8. A multi-stage pumping simulation device for pumped storage in abandoned mines according to claim 1, characterized in that: The water source assembly (8) further includes a second connecting hose (816), a water pressure detector (817), a first fixing plate (818), and a second fixing plate (819). The water tank (803) has the second connecting hose (816) fixedly installed on both its upper and lower sides. A threaded connector (5) is movably provided at the end of the second connecting hose (816). The outer diameter of the end of the second connecting hose (816) is larger than the diameter of the middle section of the second connecting hose (816). A sealing ring is fixedly installed at the end of the second connecting hose (816). The other end of the pipe (816) is provided with a solenoid valve and the solenoid valve is fixedly installed on the water tank (803). A water pressure detector (817) is fixedly installed on the lower side of the water tank (803). A first fixing plate (818) is fixedly installed between the two sets of first mounting plates (802). A second fixing plate (819) is fixedly installed at the ends of the two sets of first limiting rods (801). The maximum diameter of the threaded joint (5) is smaller than the side length of the upper frame of the checkerboard side mounting bracket (2). The water tank (803) and the first limiting rod (801) are not on the same side.

9. A multi-stage pumping simulation device for pumped storage in abandoned mines according to claim 1, characterized in that: The lower side of the chessboard-style side-mounted bracket (2) is fixedly installed with a second limiting plate (9). The mounting base (1) is provided with a series of limiting slots (10). The second limiting plate (9) and the first limiting rod (801) are both inserted into the limiting slots (10). The mounting base (1) is fixedly installed with a second mounting box (11) on one side. The second mounting box (11) is provided with a fifth spring (12). The second mounting box (11) is movably inserted with a second triangular block (13). The second triangular block (13) abuts against the fifth spring (12). The position of the second triangular block (13) is opposite to the position of the limiting slot (10). The other side of the mounting base (1) is fixedly installed with a control panel (14). The upper side of the control panel (14) is provided with a power socket (15).

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