Stepped water pumping energy storage device

Abstract

The invention discloses a stepped water pumping energy storage device, which belongs to the technical field of water pumping energy storage and comprises a structure, and a mounting slope is arranged on one side wall of the structure. The water storage tank is fixedly connected with the top of the structure; the plurality of running water tanks are sequentially arranged on the mounting inclined surface at intervals from top to bottom and are fixedly connected with the mounting inclined surface; the plurality of running water tanks are connected through connecting water pipes; the running water tank at the top of the structure is connected with the water storage tank through a water outlet pipe; the generator is arranged in the running water tank, and the fixed end of the generator is fixedly connected with the inner wall of the running water tank; a rotating shaft of the generator is connected with the impeller rotating assembly; the impeller rotating assembly and the connecting water pipe are correspondingly arranged, so that water flow impacts the impeller rotating assembly; one end of the water pumping pipe is connected with the water storage tank, and the other end is connected with the water pump. The system is low in energy consumption and good in flexibility, does not depend on specific terrains, and solves the problem that a traditional water pumping energy storage power station depends on the terrains.

Description

Technical Field

[0001] The invention belongs to the technical field of pumped energy storage, and in particular relates to a stepped pumped energy storage device. Background Art

[0002] Since the advent of electricity, it has accompanied mankind for more than a hundred years. In the production and life of human society, there are various ways of generating electricity, such as nuclear power plants, thermal power plants, hydropower, solar power and wind power, etc. When electricity consumption is low, electricity cannot be stored, resulting in a waste of electricity; when electricity consumption is high, electricity will be insufficient. An energy storage device is needed to store electricity during low electricity consumption and supplement it during peak electricity consumption. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a stepped pumped energy storage device, which adopts the following technical solutions:

[0004] A stepped pumped water energy storage device, comprising:

[0005] A structure, wherein a mounting slope is provided on one side wall of the structure;

[0006] A water storage tank, the water storage tank is fixedly connected to the top of the structure;

[0007] A plurality of water flow boxes; the plurality of water flow boxes are sequentially arranged on the installation slope from top to bottom and fixedly connected to the installation slope; the plurality of water flow boxes are connected by connecting water pipes; the water flow boxes located at the top of the structure are connected to the water storage tank by a water outlet pipe; a first valve is arranged on the water outlet pipe;

[0008] A generator is arranged inside the water flow box, wherein the fixed end of the generator is fixedly connected to the inner wall of the water flow box; the rotating shaft of the generator is connected to the impeller rotating assembly; the impeller rotating assembly is arranged correspondingly to the connecting water pipe, so that the water flow impacts the impeller rotating assembly, thereby driving the generator to generate electricity;

[0009] A water pumping pipe, one end of which is connected to the water storage tank, and the other end of which is connected to the water flow tank located at the bottom of the structure through the connecting water pipe; a water pump is provided on the water pumping pipe to pump water into the water storage tank for energy storage.

[0010] Furthermore, a second valve is provided on the water pumping pipe; and a plurality of the water flow boxes are arranged in a stepped manner from top to bottom along the installation slope.

[0011] Further, the impeller rotating assembly includes an impeller shaft and a plurality of blades; both axial ends of the impeller shaft are connected with connecting shafts; one of the connecting shafts is fixedly connected to the rotating shaft of the generator, and the other connecting shaft is rotatably connected to the inner wall of the water flow box; the plurality of blades are evenly arranged along the circumference of the impeller shaft and connected to the impeller shaft; the impeller shaft and the connecting water pipe are correspondingly arranged so that the water flow of the connecting water pipe impacts the blades;

[0012] A water outlet control assembly is disposed on the first end surface of the fan blade, and two collecting plates are disposed on the second end surface; the first end surface and the second end surface are disposed opposite each other along the radial direction of the impeller shaft;

[0013] The two collecting plates are respectively arranged at the two ends of the impeller shaft in the axial direction and are fixedly connected to the fan blades; the collecting plates are right-angled triangle structures; the right-angle ends of the collecting plates are correspondingly connected to the roots of the fan blades; the collecting plates extend along the radial direction of the impeller shaft;

[0014] It is assumed that the end of the fan blade connected to the impeller shaft is the root, and the end of the fan blade away from the impeller shaft is the end; a water storage chamber is provided inside the fan blade; a placement groove is provided at one end of the water storage chamber close to the impeller shaft; the placement groove is communicated with the water storage chamber; a water outlet extrusion assembly is provided inside the placement groove; a water inlet groove is provided on the first end face of the fan blade; the water inlet groove is provided at one end close to the root of the fan blade and is communicated with the water storage chamber; a drainage groove is provided on the second end face of the fan blade; the drainage groove is provided at one end close to the end of the fan blade and is communicated with the water storage chamber.

[0015] Furthermore, the water outlet control assembly includes a water outlet baffle, a side block, two fixed blocks and two limit blocks; the water outlet baffle is movably connected to the second end face of the fan blade to close the drainage groove; guide rods are connected to the two ends of the water outlet baffle along the axial direction of the impeller shaft; the guide rod extends along the radial direction of the impeller shaft; a guide hole is provided on the side block; the side block can be slidably mounted on the guide rod through the guide hole; the two fixed blocks are respectively arranged at the two ends of the guide rod; the guide rod is fixedly connected to the fan blade through the fixed block; the two limit blocks are respectively arranged at the two ends of the side block, and are fixedly connected to the guide rod to limit the side block.

[0016] Furthermore, the water outlet control assembly also includes a fixed plate, a shaft, a rack and a gear; the fixed plate is arranged on the end of the guide rod away from the water outlet baffle and is fixedly connected to the fan blades; the end of the water outlet baffle away from the fan blades is connected to the rack; the rack extends in the radial direction of the impeller shaft; the gear is fixedly connected to the shaft and meshes with the rack; the shaft is arranged between the two fixed plates and extends in the axial direction of the impeller shaft; the end of the shaft is rotatably connected to the fixed plate; a counterweight is connected to the end of the shaft away from the fan blades.

[0017] Further, the water outlet extrusion assembly includes an impact weight and a piston; the impact weight is movably arranged in the placement groove; the piston is movably arranged in the water storage chamber at one end close to the impeller shaft, and is fixedly connected to the end of the impact weight away from the impeller shaft; the end of the piston away from the impact weight is flush with the end of the water inlet groove close to the impeller shaft; the end surface of the piston extending in the radial direction of the impeller shaft is in contact with the inner wall of the water storage chamber;

[0018] The cam is an airtight container, the one end of which is adapted to engage the at least one cam and the other end of which is adapted to engage the at least one cam.

[0019] A fixed control component is provided on one end of the fan blade close to the impact weight; the fixed control component cooperates with the impact weight to limit the impact weight.

[0020] Furthermore, the fixed control assembly includes a compression rod, a connecting rod, a movable block, a fixed cylinder and a clamping unit; the fixed cylinder is connected to one end of the fan blade close to the impeller shaft and is arranged corresponding to the placement groove; an internal groove is arranged inside the fixed cylinder; the internal groove is communicated with the placement groove; the movable block can be movably arranged in the internal groove; an end of the movable block away from the fan blade is connected to the inner wall of the fixed cylinder by a second spring; two second springs are provided; the two second springs are parallel to each other; the connecting rod is arranged at the bottom of the fixed cylinder; the first end of the connecting rod is connected to the compression rod, and the second end passes through the fixed The fixed cylinder extends into the internal groove and is connected to the movable block; the second end of the connecting rod is arranged between the two second springs; an extrusion limiting unit is arranged on the end of the pressure rod away from the connecting rod; one end of the extrusion limiting unit is connected to the water outlet baffle, and the other end abuts against the pressure rod to limit the reciprocating movement of the pressure rod in the radial direction of the impeller shaft; a movable groove is arranged in the movable block; an end groove is arranged at the end of the movable block away from the pressure rod; the movable groove is connected with the end groove; the clamping unit is arranged in the movable groove, and passes through the end groove to cooperate with the impact weight block to limit the impact weight block.

[0021] Furthermore, the card-connecting unit includes a card block, a movable plate and a third spring; the movable plate is arranged in the end groove; one end of the movable plate close to the pressure rod is connected to the inner wall of the movable block through the third spring; one end of the card block is connected to an end of the movable block away from the pressure rod, and the other end passes through the movable block and extends to the outside of the movable block; a card slot is provided on the end of the impact weight block close to the movable block; the card slot is adapted to the card block to limit the impact weight block.

[0022] Furthermore, a compression slope is provided on the end of the blocking block away from the impeller shaft; an extrusion slope is provided on the end of the impact weight block close to the impeller shaft; the extrusion slope and the compression slope are parallel to each other, and the inclination angle of the extrusion slope is the same as the inclination angle of the compression slope.

[0023] Further, the extrusion limiting unit comprises a connecting rod, a connecting plate and a limiting member connected in sequence; the connecting rod is connected to one end of the water outlet baffle plate close to the impeller shaft and extends in the radial direction of the impeller shaft; the first end of the connecting plate is connected to the connecting rod, and the second end extends in the radial direction of the impeller shaft and is connected to the limiting member;

[0024] The limiting member includes a first limiting pressure plate, a second limiting pressure plate and a connecting inclined plate which are connected in sequence; one end of the first limiting pressure plate is connected to the second end of the connecting plate, and the other end extends along the radial direction of the impeller shaft and is connected to the connecting inclined plate; the second limiting pressure plate abuts against an end of the pressure rod away from the connecting rod to limit the reciprocating movement of the pressure rod in the radial direction of the impeller shaft; the first limiting pressure plate and the second limiting pressure plate are both parallel to the fan blades.

[0025] Beneficial effects:

[0026] The present invention provides a stepped pumped energy storage device. When electricity consumption is low, a water pump pumps water into a water tank, converts electrical energy into potential energy and stores it. When electricity consumption is peak, the first valve and the second valve are opened to generate a height difference through the stepped flow tanks. The water stored in the water tank flows downward to the reservoir, and the water flow drives the impeller shaft to rotate, converting the potential energy into electrical energy to provide electrical energy to the electricity user. The device has good flexibility and does not rely on specific terrain, thus solving the problem of traditional pumped energy storage power stations relying on terrain differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the stepped pumped energy storage device of the present invention;

[0028] Figure 2 It is a schematic structural diagram of the impeller rotating assembly of the stepped pumping energy storage device of the present invention;

[0029] Figure 3 It is a schematic diagram of the overall structure of the fan blades of the stepped pumping energy storage device of the present invention;

[0030] Figure 4 It is a schematic diagram of the internal structure of the fan blades of the stepped pumping energy storage device of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the water outlet control assembly of the stepped pumping energy storage device of the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the water storage chamber in the fan blade of the stepped pumping energy storage device of the present invention;

[0033] Figure 7 for Figure 6 The enlarged structural diagram at A in the middle;

[0034] Figure 8 for Figure 6 The enlarged structural diagram at B in the middle;

[0035] Fig. 9 It is a schematic diagram of the internal structure of the movable block of the stepped pumping energy storage device of the present invention;

[0036] Fig.10 It is a structural schematic diagram of the connection between the water outlet baffle and the limiting extrusion unit of the stepped pumping energy storage device of the present invention;

[0037] Among them, 1. structure; 2. installation slope; 3. water flow box; 4. connecting water pipe; 5. water storage tank; 6. water outlet pipe; 7. first valve; 8. water pump; 9. second valve; 10. water pump; 11. generator; 12. impeller rotating assembly; 1201. impeller shaft; 1202. connecting shaft; 1203. fan blade; 1204. collecting plate; 1205. water inlet trough; 1206. water storage cavity; 1207, drainage groove; 13, water outlet control assembly; 1301, water outlet baffle; 1302, side block; 1303, guide hole; 1304, guide rod; 1305, fixed block; 1306, limit block; 1307, rack; 1308, gear; 1309, shaft; 1310, fixed plate; 1311, counterweight; 14, water outlet extrusion assembly; 1401, placement groove; 1402, impact weight; 1403, piston; 1404, plate groove; 1405, water inlet baffle; 1406, slide groove; 1407, storage groove; 1408, limit plate; 1409, first spring; 15, fixed control assembly; 1501, card slot; 1502, extrusion slope; 1503, fixed cylinder; 1504, internal groove; 1505, movable block; 1506, connecting rod; 1507, compression rod; 1508, second spring; 1509, movable groove; 1510, end groove; 1511, movable plate; 1512, block; 1513, compression inclined surface; 1514, third spring; 1515, connecting rod; 1516, connecting plate; 1517, limiting member; 15171, first limiting pressure plate; 15172, connecting inclined plate; 15173, second limiting pressure plate. DETAILED DESCRIPTION

[0038] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below.

[0039] Example 1

[0040] Reference Figures 1 to 10 , a stepped pumped energy storage device, comprising:

[0041] A structure 1, wherein a mounting slope 2 is provided on one side wall of the structure 1;

[0042] A water storage tank 5, which is fixedly connected to the top of the structure 1;

[0043] A plurality of water flow boxes 3; the plurality of water flow boxes 3 are sequentially arranged on the installation inclined surface 2 at intervals from top to bottom and are fixedly connected to the installation inclined surface 2; the plurality of water flow boxes 3 are connected by connecting water pipes 4; the water flow box 3 located at the top of the structure 1 is connected to the water storage tank 5 by a water outlet pipe 6; a first valve 7 is arranged on the water outlet pipe 6;

[0044] The generator 11 is arranged inside the water box 3, and the fixed end of the generator 11 is fixedly connected to the inner wall of the water box 3; the rotating shaft of the generator 11 is connected to the impeller rotating assembly 12; the impeller rotating assembly 12 is arranged corresponding to the connecting water pipe 4, so that the water flow impacts the impeller rotating assembly 12, thereby driving the generator 11 to generate electricity;

[0045] A water pumping pipe 8, one end of which is connected to the water storage tank 5, and the other end of which is connected to a water pump 10, so as to pump water into the water storage tank for energy storage.

[0046] The inclination angle of the installation slope 2 is 10° to 90°.

[0047] In this embodiment, a second valve 9 is provided on the water pumping pipe 8; and a plurality of water flow boxes 3 are arranged in a stepped manner from top to bottom along the installation slope 2 .

[0048] In this embodiment, the impeller rotating assembly 12 includes an impeller shaft 1201 and a plurality of blades 1203; both axial ends of the impeller shaft 1201 are connected with connecting shafts 1202; one connecting shaft 1202 is fixedly connected to the rotating shaft of the generator 11, and the other connecting shaft 1202 is rotatably connected to the inner wall of the water flow box 3; the plurality of blades 1203 are evenly arranged along the circumference of the impeller shaft 1201 and connected to the impeller shaft 1201; the impeller shaft 1201 is correspondingly arranged to the connecting water pipe 4, so that the water flow of the connecting water pipe 4 impacts the blades 1203;

[0049] A water outlet control assembly 13 is disposed on the first end surface of the fan blade 1203, and two collecting plates 1204 are disposed on the second end surface; the first end surface and the second end surface are disposed opposite to each other along the radial direction of the impeller shaft 1201;

[0050] The two collecting plates 1204 are respectively arranged at the two ends of the axial direction of the impeller shaft 1201 and are fixedly connected to the fan blades 1203; the collecting plates 1204 are of a right-angled triangle structure; the right-angled ends of the collecting plates 1204 are correspondingly connected to the roots of the fan blades 1203; the collecting plates 1204 extend along the radial direction of the impeller shaft 1201;

[0051] The end of the fan blade 1203 connected to the impeller shaft 1201 is set as the root, and the end of the fan blade 1203 away from the impeller shaft 1201 is set as the end; a water storage chamber 1206 is set inside the fan blade 1203; a placement groove 1401 is set at one end of the water storage chamber 1206 close to the impeller shaft 1201; the placement groove 1401 is communicated with the water storage chamber 1206; a water outlet extrusion component 14 is set inside the placement groove 1401; a water inlet groove 1205 is opened on the first end face of the fan blade 1203; the water inlet groove 1205 is set at one end close to the root of the fan blade 1203 and is communicated with the water storage chamber 1206; a drainage groove 1207 is set on the second end face of the fan blade 1203; the drainage groove 1207 is set at one end close to the end of the fan blade 1203 and is communicated with the water storage chamber 1206.

[0052] Through the above technical scheme, water flow boxes 3 are installed equidistantly along the inclined direction on the installation slope 2, and each water flow box 3 is connected by a connecting water pipe 4. Water can flow continuously through the connecting water pipe 4, the suction pipe 8 and the water pump 10. When the water flows through each water flow box 3, it drives the impeller shaft 1201 to rotate, and drives the rotating shaft of the generator 11 to rotate to generate electricity. When the water flows impact on the fan blades 1203, it enters one side of the water storage chamber 1206 from the water inlet groove 1205, so that the weight of the fan blades 1203 located on the side of the impeller shaft 1201 close to the structure 1 is greater than the weight of the fan blades 1203 on the other side of the impeller shaft 1201. Subsequently, under the effect of the weight difference on both sides of the impeller shaft 1201, the counterclockwise rotation speed of the impeller shaft 1201 is accelerated, thereby improving the power generation efficiency of the generator 11.

[0053] In this embodiment, the water outlet control assembly 13 includes a water outlet baffle 1301, a side block 1302, two fixed blocks 1305 and two limit blocks 1306; the water outlet baffle 1301 is movably connected to the second end surface of the fan blade 1203 to close the drainage groove 1207; the two ends of the water outlet baffle 1301 along the axial direction of the impeller shaft 1201 are connected with guide rods 1304; the guide rods 1304 extend along the radial direction of the impeller shaft 1201; the side blocks A guide hole 1303 is provided on 1302; the side block 1302 can be slidably mounted on the guide rod 1304 through the guide hole 1303; two fixing blocks 1305 are respectively arranged at both ends of the guide rod 1304; the guide rod 1304 is fixedly connected to the fan blade 1203 through the fixing blocks 1305; two limiting blocks 1306 are respectively arranged at both ends of the side block 1302, and are fixedly connected to the guide rod 1304 to limit the side block 1302.

[0054] In this embodiment, the water outlet control component 13 also includes a fixed plate, a shaft 1309, a rack 1307 and a gear 1308; the fixed plate is arranged on the end of the guide rod 1304 away from the water outlet baffle 1301 and is fixedly connected to the fan blades 1203; the end of the water outlet baffle 1301 away from the fan blades 1203 is connected to the rack 1307; the rack 1307 extends in the radial direction of the impeller shaft 1201; the gear 1308 is fixedly connected to the shaft 1309 and meshes with the rack 1307; the shaft 1309 is arranged between the two fixed plates and extends in the axial direction of the impeller shaft 1201; the end of the shaft 1309 is rotatably connected to the fixed plate; the end of the shaft 1309 away from the fan blades 1203 is connected to a counterweight block 1311.

[0055] Through the above technical solution, when the fan blade 1203 rotates downward, due to the engagement of the gear 1308 and the rack 1307, the water outlet baffle 1301 moves toward the impeller shaft 1201, so that the drainage groove 1207 opens, thereby facilitating the discharge of water entering the water storage chamber 1206 when the end of the fan blade 1203 is tilted downward, thereby ensuring the continuous flow of water and continuous power generation.

[0056] In this embodiment, the water outlet extrusion assembly 14 includes an impact weight 1402 and a piston 1403; the impact weight 1402 is movably arranged in the placement groove 1401; the piston 1403 is movably arranged in the water storage chamber 1206 at one end close to the impeller shaft 1201, and is fixedly connected to the end of the impact weight 1402 away from the impeller shaft 1201; the end of the piston 1403 away from the impact weight 1402 is flush with the end of the water inlet groove 1205 close to the impeller shaft 1201; the end surface of the piston 1403 extending along the radial direction of the impeller shaft 1201 is in contact with the inner wall of the water storage chamber 1206;

[0057] The water outlet extrusion assembly 14 also includes a water inlet baffle 1405, a limit plate 1408 and a first spring 1409; a plate groove 1404 is provided at one end of the fan blade 1203 away from the placement groove 1401, and the plate groove 1404 is provided corresponding to the water inlet groove 1205; the plate groove 1404 extends in the radial direction of the impeller shaft 1201; the water inlet baffle 1405 is provided at one end of the plate groove 1404 close to the impeller shaft 1201; the water inlet baffle 1405 and the plate groove 1404 are connected by the first spring 1409; a slide groove 1406 is provided between the placement groove 1401 and the plate groove 1404; the plate groove 1404, The placement groove 1401 and the slide groove 1406 are connected; a receiving groove 1407 is provided on one end of the slide groove 1406 close to the impeller shaft 1201; a limit plate 1408 is movably arranged in the receiving groove 1407; an end of the limit plate 1408 extending in the radial direction of the impeller shaft 1201 is fixedly connected to the water inlet baffle 1405; an end of the limit plate 1408 away from the impeller shaft 1201 is in contact with the impact weight 1402; the receiving groove 1407, the plate groove 1404 and the slide groove 1406 are connected to each other, so that the limit plate 1408 can slide back and forth between the slide groove 1406 and the receiving groove 1407;

[0058] A fixed control component 15 is provided on one end of the fan blade 1203 close to the impact weight 1402 ; the fixed control component 15 cooperates with the impact weight 1402 to limit the impact weight 1402 .

[0059] In this embodiment, the fixed control component 15 includes a compression rod 1507, a connecting rod 1506, a movable block 1505, a fixed cylinder 1503 and a clamping unit; the fixed cylinder 1503 is connected to one end of the fan blade 1203 close to the impeller shaft 1201, and is arranged corresponding to the placement groove 1401; an internal groove 1504 is arranged inside the fixed cylinder 1503; the internal groove 1504 is connected to the placement groove 1401; the movable block 1505 is movably arranged in the internal groove 1504; the end of the movable block 1505 away from the fan blade 1203 is connected to the inner wall of the fixed cylinder 1503 through a second spring 1508; two second springs 1508 are provided; the two second springs 1508 are parallel to each other; the connecting rod 1506 is arranged at the bottom of the fixed cylinder 1503; the first end of the connecting rod 1506 is connected to the compression rod 1507 , the second end passes through the fixed cylinder 1503 and extends into the internal groove 1504 to be connected with the movable block 1505; the second end of the connecting rod 1506 is arranged between the two second springs 1508; an extrusion limiting unit is arranged on the end of the pressure rod 1507 away from the connecting rod 1506; one end of the extrusion limiting unit is connected to the water outlet baffle 1301, and the other end abuts against the pressure rod 1507 to limit the reciprocating movement of the pressure rod 1507 in the radial direction of the impeller shaft 1201; a movable groove 1509 is arranged in the movable block 1505; an end groove 1510 is arranged at the end of the movable block 1505 away from the pressure rod 1507; the movable groove 1509 is connected with the end groove 1510; the clamping unit is arranged in the movable groove 1509, and passes through the end groove 1510 to cooperate with the impact weight block 1402 to limit the impact weight block 1402.

[0060] Among them, the pressure rod 1507 is cylindrical, the arc-shaped side wall of the cylindrical pressure rod 1507 is connected to the connecting rod 1506, and the axial direction of the cylindrical pressure rod 1507 is parallel to the axial direction of the impeller shaft 1201, that is, the two ends of the axial direction of the cylindrical pressure rod 1507 extend along the axial direction of the impeller shaft 1201.

[0061] In this embodiment, the card-connecting unit includes a card block 1512, a movable plate 1511 and a third spring 1514; the movable plate 1511 is arranged in the end groove 1510; the end of the movable plate 1511 close to the pressure rod 1507 is connected to the inner wall of the movable block 1505 through the third spring 1514; one end of the card block 1512 is connected to the end of the movable block 1505 away from the pressure rod 1507, and the other end passes through the movable block 1505 and extends to the outside of the movable block 1505; a card slot 1501 is provided on the end of the impact weight block 1402 close to the movable block 1505; the card slot 1501 is adapted to the card block 1512 to limit the impact weight block 1402.

[0062] Through the above technical solution, after the water outlet baffle 1301 moves toward the impeller shaft 1201, the first limiting pressure plate 15171 moves to the position corresponding to the pressure rod 1507, so that the movable block 1505 moves toward the first limiting pressure plate 15171 under the action of elastic force, so that the clamping block 1512 leaves the inside of the clamping slot 1501 and disengages from the impact weight block 1402, so that the impact weight block 1402 moves downward toward the drainage groove 1207 under the action of gravity, thereby accelerating the discharge speed of water in the water storage chamber 1206, and generating an impact force on the water at the bottom of the water tank 3 when the water is discharged, thereby increasing the impact force of the water on the fan blades 1203 inside the water tank 3 below, and further improving the power generation efficiency of the generator 11.

[0063] In this embodiment, a compression slope 1513 is provided on the end of the block 1512 away from the impeller shaft 1201; an extrusion slope 1502 is provided on the end of the impact weight 1402 close to the impeller shaft 1201; the extrusion slope 1502 and the compression slope 1513 are parallel to each other, and the inclination angle of the extrusion slope 1502 is the same as the inclination angle of the compression slope 1513.

[0064] In this embodiment, the extrusion limiting unit includes a connecting rod 1515, a connecting plate 1516 and a limiting member 1517 which are connected in sequence; the connecting rod 1515 is connected to one end of the water outlet baffle 1301 close to the impeller shaft 1201 and extends in the radial direction of the impeller shaft 1201; the first end of the connecting plate 1516 is connected to the connecting rod 1515, and the second end extends in the radial direction of the impeller shaft 1201 and is connected to the limiting member 1517;

[0065] The limiting member 1517 includes a first limiting pressure plate 15171, a second limiting pressure plate 15173 and a connecting inclined plate 15172 which are connected in sequence; one end of the first limiting pressure plate 15171 is connected to the second end of the connecting plate 1516, and the other end extends along the radial direction of the impeller shaft 1201 and is connected to the connecting inclined plate 15172; the second limiting pressure plate 15173 abuts against one end of the compression rod 1507 away from the connecting rod 1506 to limit the reciprocating movement of the compression rod 1507 in the radial direction of the impeller shaft 1201; the first limiting pressure plate 15171 and the second limiting pressure plate 15173 are both parallel to the fan blades 1203.

[0066] Among them, the distance between the first limiting pressure plate 15171 and the fan blade 1203 is greater than the distance between the second limiting pressure plate 15173 and the fan blade 1203.

[0067] Through the above technical solution, the second limiting pressure plate 15173 is tightly attached to the pressure rod 1507. After the impact weight 1402 moves, the impact weight 1402 no longer limits the limiting plate 1408, and the water inlet baffle 1405 moves toward the inside of the water inlet groove 1205 under the action of elastic force to close the water inlet groove 1205, so that water can no longer enter the water storage chamber 1206. The water entering the water storage chamber 1206 can only be on the side of the piston 1403 away from the impeller shaft 1201, so that the water inside the water storage chamber 1206 can be drained conveniently.

[0068] The working principle of a stepped pumped energy storage device provided by the present invention is as follows:

[0069] Water or other flowing media is stored in advance inside the water storage tank 5. In this embodiment, water is taken as an example: the second valve 9 and the water pump 10 are opened to pump water into the water storage tank 5, and the first valve 7 is opened to allow water to flow from the water outlet pipe 6 to the first water flow box 3. Since the connection position of the water outlet pipe 6 at the top of the first water flow box 3 is the same as the connection position of the connecting water pipe 4 at the top of other water flow boxes 3, the fan blades 1203 on the side of the impeller shaft 1201 close to the structure 1 are located above the water flow box 3 and below the connecting water pipe 4, so that inside the first water flow box 3, the fan blades 1203 on the side of the impeller shaft 1201 close to the structure 1 are located below the water outlet pipe 6, so that when the water flow impacts the top wall of the fan blades 1203, the fan blades 1203 are 03 generates an impact force, pushing the impeller shaft 1201 to rotate counterclockwise, and one of the connecting shafts 1202 on the impeller shaft 1201 is connected to the rotating shaft of the generator 11, thereby causing the rotating shaft of the first generator 11 to rotate, thereby generating electricity. After the water flows through the first water box 3, it enters the second water box 3 from the connecting water pipe 4 at the bottom of the water box 3, driving the impeller shaft 1201 on the second water box 3 to rotate, causing the generator 11 on the second water box 3 to generate electricity, and then the water flows through each water box 3 from top to bottom, causing each connecting shaft 1202 to rotate, causing each generator 11 to generate electricity, until the water flows into the lowest water box 3 and then flows out into the river water below.

[0070] When water enters the water flow box 3 from the water outlet pipe 6 or the connecting water pipe 4, the water enters the top of the fan blade 1203 on the side of the impeller shaft 1201 close to the structure 1. At this time, the fan blade 1203 is in a state of tilting upward at the end, and water flows on the fan blade 1203 toward the root of the fan blade 1203, so that the water enters the water storage chamber 1206 through the water inlet groove 1205. At this time, the drainage groove 1207 on the water storage chamber 1206 is closed by the water outlet baffle 1301, so that the water entering the water storage chamber 1206 cannot be discharged, so that the weight of the fan blade 1203 on the side of the impeller shaft 1201 close to the structure 1 is greater than the weight of the fan blade 1203 on the side of the impeller shaft 1201 away from the structure 1, and then under the effect of the weight difference of the fan blades 1203 on both sides of the impeller shaft 1201, the rotation speed of the impeller shaft 1201 is accelerated.

[0071] When the fan blades 1203 on the side of the impeller shaft 1201 close to the structure 1 rotate along with the impeller shaft 1201 to a state where the ends of the fan blades 1203 are tilted downward, during the rotation process, since the counterweight block 1311 is maintained at the bottom end of the shaft 1309 under the action of gravity, the shaft 1309 rotates clockwise relative to the fan blades 1203, causing the gear 1308 to rotate clockwise, and the gear 1308 engages with the rack 1307 on the water outlet baffle 1301, thereby driving the water outlet baffle 1301 to move toward the side of the impeller shaft 1201. After rotating to a certain angle, the drain groove 1207 is opened, thereby facilitating the discharge of water in the water storage chamber 1206, allowing the water to circulate and ensuring continuous power generation. At this time, the side block 1302 contacts the limit block 1306 close to the side of the impeller shaft 1201. At this time, under the limiting action, the gear 1308 no longer rotates.

[0072] After the water outlet baffle 1301 moves toward the side of the impeller shaft 1201, it drives the first limiting pressure plate 15171 to move toward the compression rod 1507, so that the first limiting pressure plate 15171 moves to the side of the compression rod 1507 away from the fan blade 1203, and the distance between the first limiting pressure plate 15171 and the fan blade 1203 is greater than the distance between the second limiting pressure plate 15173 and the fan blade 1203. When the second limiting pressure plate 15173 contacts the compression rod 1507, the third spring 1514 is in a stretched state. When the first limiting pressure plate 15171 corresponds to the compression rod 1507, the compression rod 1507 moves back under the elastic force of the third spring 1514. , so that the pressure rod 1507 contacts the first limiting pressure plate 15171, so that the block 1512 leaves the slot 1501 and disengages from the impact weight 1402. At this time, since the end of the fan blade 1203 is in a downward tilted state, the impact weight 1402 moves toward the drain groove 1207 under the action of gravity, thereby quickly pushing the water inside the water storage chamber 1206 out of the drain groove 1207, accelerating the water discharge speed. At the same time, under the impact force of the discharged water, the water in the water box 3 is discharged from the connecting water pipe 4 at a faster speed, thereby increasing the impact force of the water on the fan blade 1203 inside the lower water box 3, and further improving the power generation efficiency of the generator 11.

[0073] After the impact weight 1402 leaves the placement groove 1401, the impact weight 1402 no longer limits the limit plate 1408. When the water inlet baffle 1405 is in the plate groove 1404, the first spring 1409 is in a compressed state. When the impact weight 1402 leaves, the water inlet baffle 1405 moves toward the water inlet groove 1205 to close the water inlet groove 1205, so that water can no longer enter the water storage chamber 1206. The water entering the water storage chamber 1206 can only be on the side of the piston 1403 away from the impeller shaft 1201, so that the water in the water storage chamber 1206 can be drained easily.

[0074] When the fan blade 1203 rotates to the side of the impeller shaft 1201 away from the structure 1, and the end of the fan blade 1203 is in an upward state, the shaft 1309 rotates under the gravity of the counterweight block 1311, and then drives the water outlet baffle 1301 to move back, so that the side block 1302 contacts the limit block 1306 on the side away from the impeller shaft 1201, so that the water outlet baffle 1301 closes the drainage groove 1207 again. When the water outlet baffle 1301 moves back, the second limit pressure plate 15173 moves back to the contact state with the pressure rod 1507. In this state, there are two situations:

[0075] First, when the impact weight 1402 moves back faster, the movable block 1505 moves back so that the clamping block 1512 is directly clamped into the clamping slot 1501 on the impact weight 1402, thereby fixing the impact weight 1402;

[0076] Second, when the impact weight 1402 moves back slowly, the movable block 1505 moves back first. After the impact weight 1402 moves back, the extrusion slope 1502 on the impact weight 1402 contacts the compression slope 1513 on the clamping block 1512. Under the action of gravity, the clamping block 1512 is pushed into the movable groove 1509, and the third spring 1514 is compressed. When the impact weight 1402 completely moves back to the placement groove 1401, the clamping block 1512 moves back under the elastic force of the third spring 1514, so that the clamping block 1512 is clamped into the clamping groove 1501, thereby re-fixing the impact weight 1402.

[0077] When the impact weight 1402 moves back, it pushes the limit plate 1408 back into the storage groove 1407, so that the water inlet baffle 1405 moves back into the plate groove 1404, opening the water inlet groove 1205, making it convenient for the fan blades 1203 to rotate to the side of the impeller shaft 1201 close to the structure 1, and water can enter the water storage chamber 1206 again.

[0078] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A stepped pumped energy storage device, characterized in that: include: A structure, wherein a mounting slope is provided on one side wall of the structure; A water storage tank, the water storage tank is fixedly connected to the top of the structure; A plurality of water flow boxes; the plurality of water flow boxes are sequentially arranged on the installation slope from top to bottom and fixedly connected to the installation slope; the plurality of water flow boxes are connected by connecting water pipes; the water flow boxes located at the top of the structure are connected to the water storage tank by a water outlet pipe; a first valve is arranged on the water outlet pipe; A generator is arranged inside the water flow box, wherein the fixed end of the generator is fixedly connected to the inner wall of the water flow box; the rotating shaft of the generator is connected to the impeller rotating assembly; the impeller rotating assembly is arranged correspondingly to the connecting water pipe, so that the water flow impacts the impeller rotating assembly, thereby driving the generator to generate electricity; A water pumping pipe, one end of which is connected to the water storage tank, and the other end of which is connected to a water pump, so as to pump water into the water storage tank for energy storage.

2. The stepped pumped energy storage device according to claim 1, characterized in that: A second valve is arranged on the water pumping pipe; and a plurality of water flow boxes are arranged in a stepped manner from top to bottom along the installation slope.

3. The stepped pumped energy storage device according to claim 1, characterized in that: The impeller rotating assembly comprises an impeller shaft and a plurality of blades; both axial ends of the impeller shaft are connected with connecting shafts; one of the connecting shafts is fixedly connected to the rotating shaft of the generator, and the other connecting shaft is rotatably connected to the inner wall of the water flow box; the plurality of blades are evenly arranged along the circumference of the impeller shaft and connected to the impeller shaft; the impeller shaft and the connecting water pipe are correspondingly arranged so that the water flow of the connecting water pipe impacts the blades; A water outlet control assembly is disposed on the first end surface of the fan blade, and two collecting plates are disposed on the second end surface; the first end surface and the second end surface are disposed opposite each other along the radial direction of the impeller shaft; The two collecting plates are respectively arranged at the two ends of the impeller shaft in the axial direction and are fixedly connected to the fan blades; the collecting plates are right-angled triangle structures; the right-angle ends of the collecting plates are correspondingly connected to the roots of the fan blades; the collecting plates extend along the radial direction of the impeller shaft; It is assumed that the end of the fan blade connected to the impeller shaft is the root, and the end of the fan blade away from the impeller shaft is the end; a water storage chamber is provided inside the fan blade; a placement groove is provided at one end of the water storage chamber close to the impeller shaft; the placement groove is communicated with the water storage chamber; a water outlet extrusion assembly is provided inside the placement groove; a water inlet groove is provided on the first end face of the fan blade; the water inlet groove is provided at one end close to the root of the fan blade and is communicated with the water storage chamber; a drainage groove is provided on the second end face of the fan blade; the drainage groove is provided at one end close to the end of the fan blade and is communicated with the water storage chamber.

4. The stepped pumped energy storage device according to claim 3, characterized in that: The water outlet control assembly includes a water outlet baffle, a side block, two fixed blocks and two limit blocks; the water outlet baffle is movably connected to the second end surface of the fan blade to close the drainage groove; guide rods are connected to the two ends of the water outlet baffle along the axial direction of the impeller shaft; the guide rod extends along the radial direction of the impeller shaft; a guide hole is opened on the side block; the side block can be slidably mounted on the guide rod through the guide hole; the two fixed blocks are respectively arranged at the two ends of the guide rod; the guide rod is fixedly connected to the fan blade through the fixed block; the two limit blocks are respectively arranged at the two ends of the side block, and are fixedly connected to the guide rod to limit the side block.

5. The stepped pumped energy storage device according to claim 4, characterized in that: The water outlet control assembly also includes a fixed plate, a shaft, a rack and a gear; the fixed plate is arranged on the end of the guide rod away from the water outlet baffle and is fixedly connected to the fan blades; the end of the water outlet baffle away from the fan blades is connected to the rack; the rack extends in the radial direction of the impeller shaft; the gear is fixedly connected to the shaft and meshes with the rack; the shaft is arranged between the two fixed plates and extends in the axial direction of the impeller shaft; the end of the shaft is rotatably connected to the fixed plate; a counterweight is connected to the end of the shaft away from the fan blades.

6. The stepped pumped energy storage device according to claim 4, characterized in that: The water outlet extrusion assembly includes an impact weight and a piston; the impact weight is movably arranged in the placement groove; the piston is movably arranged in the water storage chamber at one end close to the impeller shaft, and is fixedly connected to the end of the impact weight away from the impeller shaft; the end of the piston away from the impact weight is flush with the end of the water inlet groove close to the impeller shaft; the end surface of the piston extending in the radial direction of the impeller shaft is in contact with the inner wall of the water storage chamber; The cam is an airtight container, the one end of which is adapted to engage the at least one cam and the other end of which is adapted to engage the at least one cam. A fixed control component is provided on one end of the fan blade close to the impact weight; the fixed control component cooperates with the impact weight to limit the impact weight.

7. The stepped pumped energy storage device according to claim 6, characterized in that: The fixed control assembly includes a pressure rod, a connecting rod, a movable block, a fixed cylinder and a clamping unit; the fixed cylinder is connected to one end of the fan blade close to the impeller shaft and is arranged corresponding to the placement groove; an internal groove is arranged inside the fixed cylinder; the internal groove is communicated with the placement groove; the movable block can be movably arranged in the internal groove; an end of the movable block away from the fan blade is connected to the inner wall of the fixed cylinder by a second spring; two second springs are provided; the two second springs are parallel to each other; the connecting rod is arranged at the bottom of the fixed cylinder; the first end of the connecting rod is connected to the pressure rod, and the second end passes through the fixed cylinder and Extending into the internal groove and connected with the movable block; the second end of the connecting rod is arranged between the two second springs; an extrusion limiting unit is arranged on the end of the pressure rod away from the connecting rod; one end of the extrusion limiting unit is connected to the water outlet baffle, and the other end abuts against the pressure rod to limit the reciprocating movement of the pressure rod in the radial direction of the impeller shaft; a movable groove is arranged in the movable block; an end groove is arranged at the end of the movable block away from the pressure rod; the movable groove is connected with the end groove; the clamping unit is arranged in the movable groove, and passes through the end groove to cooperate with the impact weight block to limit the impact weight block.

8. The stepped pumped energy storage device according to claim 7, characterized in that: The clamping unit includes a clamping block, a movable plate and a third spring; the movable plate is arranged in the end groove; one end of the movable plate close to the pressure rod is connected to the inner wall of the movable block through the third spring; one end of the clamping block is connected to an end of the movable block away from the pressure rod, and the other end passes through the movable block and extends to the outside of the movable block; a clamping groove is provided on the end of the impact weight block close to the movable block; the clamping groove is adapted to the clamping block to limit the impact weight block.

9. The stepped pumped energy storage device according to claim 8, characterized in that: A compression slope is arranged on one end of the clamping block away from the impeller shaft; an extrusion slope is arranged on one end of the impact weight block close to the impeller shaft; the extrusion slope and the compression slope are parallel to each other, and the inclination angle of the extrusion slope is the same as the inclination angle of the compression slope.

10. The stepped pumped energy storage device according to claim 7, characterized in that: The extrusion limiting unit comprises a connecting rod, a connecting plate and a limiting member connected in sequence; the connecting rod is connected to one end of the water outlet baffle plate close to the impeller shaft and extends in the radial direction of the impeller shaft; the first end of the connecting plate is connected to the connecting rod, and the second end extends in the radial direction of the impeller shaft and is connected to the limiting member; The limiting member includes a first limiting pressure plate, a second limiting pressure plate and a connecting inclined plate which are connected in sequence; one end of the first limiting pressure plate is connected to the second end of the connecting plate, and the other end extends along the radial direction of the impeller shaft and is connected to the connecting inclined plate; the second limiting pressure plate abuts against an end of the pressure rod away from the connecting rod to limit the reciprocating movement of the pressure rod in the radial direction of the impeller shaft; the first limiting pressure plate and the second limiting pressure plate are both parallel to the fan blades.

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