Symmetrical double-slope tower type gravity energy storage power generation system

Abstract

The invention relates to the technical field of gravity energy storage power generation, in particular to a symmetric double-inclined-plane tower type gravity energy storage power generation system which comprises a triangular frame used for providing an installation supporting position; the energy storage assembly is used for storing kinetic energy and releasing electric energy; the cable limiting assembly is used for preventing the cable from being separated; wherein the triangular frame is formed by riveting a bottom plate and two inclined plates, and the bottom plate and the two inclined plates form a triangular structure; the energy storage assembly comprises two motor boxes installed on the bottom plate through bolts, generators are arranged in the motor boxes, and output shafts of the generators are connected with an engine. The bottom plate and the two inclined plates are riveted to form the triangular frame, the triangular frame adopts the mode that the two inclined plates are symmetrically arranged, stress is uniform, due to the fact that the cross section is of a triangular structure, the overall structure is stable, and assemblies and operators in the triangular frame can be protected.

Description

Technical Field

[0001] The invention relates to the technical field of gravity energy storage power generation, and in particular to a symmetrical double-sloped tower type gravity energy storage power generation system. Background Art

[0002] The principle of gravity energy storage technology is to store energy by utilizing gravitational potential energy and convert the stored potential energy into electrical energy when needed. This technology mainly uses the potential energy caused by gravity to store energy, and achieves the storage and release of potential energy by raising or lowering liquid or solid heavy objects in scenes with natural or artificial height differences. Gravity energy storage technology can be divided into liquid medium energy storage system and solid medium energy storage system. The former mainly relies on the potential energy of water, while the latter uses the potential energy of solid matter.

[0003] The conventional methods of using gravity energy storage technology are divided into: Mine type: The new gravity energy storage system of upper and lower mine type adopts a double-platform layout, which can utilize abandoned mines. The energy storage height difference is 150~800 meters. It adopts a double-well structure of power generation well and energy storage well. The weight blocks used are 1500×50T concrete blocks. The mine depth is 800 meters, the energy storage efficiency is 78%, the installed capacity is 120MWh, and the rated power generation power is 30MW.

[0004] Mines have strict conditions for utilization and are not easy to find; even if there are abandoned mines, the cost of transformation is extremely high; due to limited location and space, the management and maintenance costs are extremely high; High mountain slope, slope type: adopting the upper and lower storage layout, the existing slope can be used, the energy storage height difference is 150~500 meters, and a multi-channel continuous lifting structure is adopted. The weight blocks used are 1000×50T concrete blocks, the ramp length is 800 meters, the energy storage efficiency is 75%, the installed capacity is 40MWh, and the rated power generation is 10MW The available geographical conditions are limited; even if there is electricity, it is not easy to find high mountain slopes; where there are slopes, energy storage is not needed; the cost of civil engineering renovation of slopes is high, the area occupied is large, and the ecological vegetation is easily damaged; natural disasters such as mountain torrents have a large negative impact.

[0005] To sum up the above problems, we propose a symmetrical double-inclined tower gravity energy storage power generation system. Summary of the invention

[0006] The purpose of the present invention is to provide a symmetrical double-sloped tower gravity energy storage power generation system to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: A symmetrical double-inclined tower gravity energy storage power generation system, comprising: A triangular frame, which is used to provide a mounting support location; Energy storage components, used to store kinetic energy and release electrical energy; A cable limiting assembly is used to prevent the cable from detaching; Wherein, the triangular frame is composed of a bottom plate and two inclined plates, and the bottom plate and the two inclined plates form a triangular structure; The energy storage component comprises: Two motor boxes are mounted on the bottom plate by bolts, a generator is arranged inside the motor box, the output shaft of the generator is connected to the engine, and is used to convert mechanical kinetic energy into electrical energy, the output shaft of the engine is connected to a winding disk, the winding disk is wound with a cable, the cable passes around the sliding shaft to connect to the weight block, and a plurality of bearings are sleeved on the axial direction of the sliding shaft.

[0008] Preferably, the inclination angle of the inclined plate is 60-85°, and the vertical distance between the top of the inclined plate and the bottom plate is 30-300m.

[0009] Preferably, the weight block is connected to four rollers, a slide rail is provided on the surface of the inclined plate, and the rollers are slidably connected to the slide rail and partially adapted.

[0010] Preferably, both sides of the sliding shaft are movably connected with support plates, and the support plates are fixed to the inclined plate by bolts.

[0011] Preferably, a winding shaft is provided inside the two winding reels, and one end of the winding shaft is connected to the output shaft of the engine; One end of one of the winding discs is connected with a slip ring, and one end of the other winding disc is provided with an inner ring and an axial hole; The slip ring is slidably connected to the inner ring and is adapted to the inner ring; One end of the winding shaft is inserted into the shaft hole.

[0012] Preferably, a plurality of heat dissipation holes are provided on both sides of the inner wall of the motor box; Cooling fans are installed on both sides of the motor box through bolts.

[0013] Preferably, plug boards are provided on both sides of the motor box, and three filter screens are connected inside the plug boards; Slide plates are arranged on both sides of the plug board, the slide plates are fixed to the outer wall of the motor box, the cross section of the slide plates is arranged to be a "U" shaped structure, the slide plates are slidably connected to a slider, and the slider is fixed to one side of the plug board.

[0014] Preferably, the cable limiting assembly comprises: A mounting box mounted on the motor box by bolts; A cylinder is arranged inside the installation box, an extension section of the cylinder is connected to a movable block, both sides of the movable block are movably connected to connecting arms, one end of the connecting arm is movably connected to the movable arm, one end of the movable arm is fixed with a rubber block, and one side of the rubber block is in an arc-shaped structure.

[0015] Preferably, a sliding rod is inserted into the interior of the movable arm, the movable arm is slidably connected to the sliding rod, and the installation box is fixedly connected to the sliding rod.

[0016] Preferably, the installation box is fixed with a fixed plate, the fixed plate is fixed with a movable frame by bolts, and the movable frame is movably connected with two movable rollers.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention forms a triangular frame by riveting a bottom plate and two inclined plates. The triangular frame adopts a symmetrical arrangement of two inclined plates to ensure uniform force. Due to the triangular structure of the cross section, the overall structure is stable and can be used to protect components and operators inside the triangular frame.

[0018] In the present invention, when the weight block is at the highest movable point on the inclined plate, the weight block is slid on the inclined plate. At this time, the gravitational potential energy of the weight block is the largest. As the weight block slides obliquely and moves downward on the inclined plate, the gravitational potential energy of the weight block gradually decreases, and the weight block will pull the cable to move. Since one end of the cable is wrapped around the winding drum, the cable will pull the winding drum to rotate, and the winding drum will drive the winding shaft to rotate, converting the gravitational potential energy into kinetic energy of the engine, and the engine will drive the generator to convert mechanical energy into electrical energy.

[0019] The present invention allows the sliders on both sides of the plug-in board to slide inside the slide plate, and the plug-in board is covered on the outside of the cooling fan and the cooling holes. When the cooling fan is started, the gas is exchanged through the plurality of cooling holes on both sides of the inner wall of the motor box, so as to provide heat dissipation treatment for the components inside the motor box. The filter screen is used to filter the gas, so as to reduce impurities carried by the gas. Alternatively, the plug-in board can be pulled out to clean the filter screen of the plug-in board.

[0020] The cable provided in the present invention passes through two rubber blocks, and the cylinder can pull the movable block to move. The movable block pulls the movable arm to slide along the sliding rod through the connecting arm, and the two movable arms can be brought close to each other, so that the rubber block contacts the cable, which is used to clamp the cable, limit the position of the cable, provide rapid deceleration for the weight block, or prevent the weight block from moving too fast and leaving the inclined plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the triangular frame of the present invention; Figure 3 It is a schematic diagram of the structure of two motor boxes of the present invention; Figure 4 It is a schematic diagram of the internal structure of the motor box of the present invention; Figure 5 It is a schematic diagram of the distribution structure of the cable limiting assembly of the present invention; Figure 6 It is a schematic diagram of the structure of two winding reels of the present invention; Figure 7 This is a schematic diagram of the external structure of the installation box of the present invention; Figure 8 It is a structural schematic diagram of the cable limiting assembly of the present invention; Fig. 9 It is a schematic diagram of the internal structure of the installation box of the present invention.

[0022] In the figure: Figure 1 and Figure 2 middle: 1. Bottom plate; 2. Inclined plate; Figure 1 , Figure 3 , Figure 4 and Figure 5 middle: 3. Energy storage assembly; 301. Weight; 302. Slide rail; 303. Cable; 304. Motor box; 305. Generator; 306. Engine; 307. Winding reel; 308. Slip ring; 309. Winding shaft; 310. Cooling fan; 311. Cooling hole; 312. Insert plate; 313. Filter; 314. Slider; 315. Slide plate; 316. Inner ring; 317. Shaft hole; Figure 1 and Figure 2 middle: 4. Sliding shaft; Figure 6 , Figure 7 , Figure 8 , Fig. 9 middle: 5. Cable limit assembly; 501. Installation box; 502. Cylinder; 503. Movable block; 504. Connecting arm; 505. Movable arm; 506. Sliding rod; 507. Rubber block; 508. Fixed plate; 509. Movable frame; 510. Movable roller. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-2 , a symmetrical double-inclined tower gravity energy storage power generation system, comprising: A triangular frame, which is used to provide a mounting support location; Energy storage component 3, used to store kinetic energy and release electrical energy; A cable limiting assembly 5, used to prevent the cable from detaching; The triangular frame is composed of a bottom plate 1 and two inclined plates 2. The bottom plate 1 and the two inclined plates 2 form a triangular structure. The triangular frame can be a steel structure, a reinforced concrete structure, or the like.

[0025] According to the above technical solution, further: A triangular frame is formed by riveting a base plate 1 and two inclined plates 2. The triangular frame adopts a symmetrical arrangement of two inclined plates 2, and the force is evenly distributed. Due to the triangular structure of the cross-section, the overall structure is stable and can be used to protect the components and operators inside the triangular frame. Several reinforcing ribs riveted on the surface of the inclined plate 2 are used to provide support for the weight block 301, which is sufficient to support the movement of the weight block 301 and prevent the inclined plate 2 from being deformed during the descent of the weight block 301.

[0026] like Figure 1 , Figure 3 and Figure 4 As shown, the energy storage component 3 includes: Two motor boxes 304 are mounted on the base plate 1 by bolts, and a generator 305 is arranged inside the motor box 304. The output shaft of the generator 305 is connected to the engine 306 for converting mechanical kinetic energy into electrical energy. The output shaft of the engine 306 is connected to the winding drum 307, and the winding drum 307 is wound with a cable 303. The traction and weighing strength of the cable 303 is much greater than 1.5 times the weight of the weight block 301. The cable 303 bypasses the sliding shaft 4 to connect the weight block 301. A number of bearings are sleeved on the axial direction of the sliding shaft 4. The bearings can be used to limit the position of the cable 303 to ensure the stability of the traction of the cable 303.

[0027] According to the above technical solution, further: When the weight 301 is at the highest movable point on the inclined plate 2, the weight 301 is slid on the inclined plate 2. At this time, the gravitational potential energy of the weight 301 is the largest. As the weight 301 slides downward on the inclined plate 2, the gravitational potential energy of the weight 301 gradually decreases. The weight 301 will pull the cable 303 to move. Since one end of the cable 303 is wrapped around the winding drum 307, the cable 303 will pull the winding drum 307 to rotate, and the winding drum 307 will drive the winding shaft 309 to rotate, converting the gravitational potential energy into kinetic energy of the engine 306. The engine 306 will drive the generator 305 to convert mechanical energy into electrical energy.

[0028] Preferably, the inclination angle of the inclined plate 2 is 60-85°, and the vertical distance between the top of the inclined plate 2 and the bottom plate 1 is 30-300m.

[0029] According to the above technical solution, further: The inclined plate 2 can provide a sliding position for the weight block 301 and provide support for the weight block 301 .

[0030] like Figure 1 and Figure 2 As shown, the weight block 301 is connected to four rollers, and a slide rail 302 is provided on the surface of the inclined plate 2. The rollers are slidably connected to the slide rail 302 and partially fit together.

[0031] According to the above technical solution, further: When the weight 301 moves, the slider at the bottom of the weight 301 will slide inside the slide rail 302. The slide rail 302 can limit the movement trajectory of the slider, and the two slide rails 302 can prevent the weight 301 from derailing or deflecting. The rollers can provide sliding support for the weight 301 to reduce the wear on the weight 301. The gravity exerted on the slide rail 302 is applied to the support column frame.

[0032] like Figure 1 and Figure 2 As shown, support plates are movably connected to both sides of the sliding shaft 4, and the support plates are fixed to the inclined plate 2 by bolts.

[0033] According to the above technical solution, further: The support plates on both sides are used to provide support for the sliding shaft 4. The sliding shaft 4 contacts the cable 303 to generate sliding friction, which can reduce the wear of the cable 303, and the gravity center of the sliding shaft 4 is applied to the supporting column frame.

[0034] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a winding shaft 309 is provided inside the two winding reels 307, one end of which is connected to the output shaft of the engine 306. The engine 306, the generator 305 and the support column frame are connected together to offset the tension and gravity. The isosceles triangle structure is used to reduce the unbalanced force on the support column frame and ensure the overall stability. One end of one winding reel 307 is connected to a slip ring 308, and one end of the other winding reel 307 is provided with an inner ring 316 and an axial hole 317; The slip ring 308 is slidably connected to the inner ring 316 and is adapted to One end of the take-up shaft 309 is inserted into the shaft hole 317 .

[0035] According to the above technical solution, further: When the two winding reels 307 rotate, the slip ring 308 of one of the winding reels 307 slides and rotates inside the inner ring 316 of the other winding reel 307 , so as to maintain the rotation stability of the two winding reels 307 .

[0036] like Figure 3 As shown, a plurality of heat dissipation holes 311 are provided on both sides of the inner wall of the motor box 304; Cooling fans 310 are mounted on both sides of the motor box 304 by bolts.

[0037] According to the above technical solution, further: When the cooling fan 310 is started, gas is exchanged through a plurality of cooling holes 311 on both sides of the inner wall of the motor box 304 to provide heat dissipation for the components inside the motor box 304 .

[0038] like Figure 3 As shown, plug boards 312 are also provided on both sides of the motor box 304, and three filter screens 313 are connected inside the plug boards 312; Slide plates 315 are provided on both sides of the plug plate 312. The slide plates 315 are fixed to the outer wall of the motor box 304. The cross section of the slide plate 315 is set to a "U"-shaped structure. The slide plate 315 is slidably connected to a slider 314, and the slider 314 is fixed to one side of the plug plate 312.

[0039] According to the above technical solution, further: The sliders 314 on both sides of the plug plate 312 can be slid inside the slide plate 315, and the plug plate 312 can be covered on the outside of the cooling fan 310 and the cooling hole 311. The filter 313 can be used to filter the gas to reduce impurities carried by the gas, or the plug plate 312 can be pulled out to clean the filter 313 of the plug plate 312.

[0040] like Figure 7 , Figure 8 and Fig. 9 As shown, the cable limiting assembly 5 includes: A mounting box 501 mounted on the motor box 304 by bolts; A cylinder 502 is arranged inside the installation box 501, and a movable block 503 is connected to the extension section of the cylinder 502. Both sides of the movable block 503 are movably connected to connecting arms 504. One end of the connecting arm 504 is movably connected to a movable arm 505. A rubber block 507 is fixed to one end of the movable arm 505. One side of the rubber block 507 is in an arc-shaped structure. A sliding rod 506 is inserted into the movable arm 505 , the movable arm 505 is slidably connected to the sliding rod 506 , and the installation box 501 is fixedly connected to the sliding rod 506 .

[0041] According to the above technical solution, further: The cable 303 passes through between the two rubber blocks 507, and the cylinder 502 can pull the movable block 503 to move. The movable block 503 pulls the movable arm 505 to slide along the sliding rod 506 through the connecting arm 504, and the two movable arms 505 can be brought close to each other, so that the rubber block 507 contacts the cable 303, which is used to clamp the cable 303 and limit the position of the cable 303, providing a rapid deceleration for the weight block 301, or preventing the weight block 301 from moving too fast and leaving the inclined plate 2.

[0042] like Figure 8 As shown, the installation box 501 is fixed with a fixed plate 508 , the fixed plate 508 is fixed with a movable frame 509 by bolts, and the movable frame 509 is movably connected with two movable rollers 510 .

[0043] According to the above technical solution, further: The cable 303 will pass between the two movable rollers 510 , which can reduce the wear on the cable 303 .

[0044] In summary, mechanical energy is converted into electrical energy: When the weight 301 is at the highest movable point on the inclined plate 2, the weight 301 is slid on the inclined plate 2. At this time, the gravitational potential energy of the weight 301 is the largest. As the weight 301 slides downward on the inclined plate 2, the gravitational potential energy of the weight 301 gradually decreases. The weight 301 will pull the cable 303 to move. Since one end of the cable 303 is wrapped around the winding drum 307, the cable 303 will pull the winding drum 307 to rotate, and the winding drum 307 will drive the winding shaft 309 to rotate, converting the gravitational potential energy into the kinetic energy of the engine 306. The engine 306 will drive the generator 305 to convert mechanical energy into electrical energy, and can be connected to an inverter and a battery pack to store the electrical energy.

[0045] Stored potential energy: The engine 306 drives the winding disk 307 to rotate, and is used to wind up the cable 303. The cable 303 pulls the weight block 301 to move on the inclined plate 2, and can pull the weight block 301 to the highest movable point to store gravitational potential energy.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A symmetrical double-slope tower gravity energy storage power generation system, characterized in that: include: A triangular frame, which is used to provide a mounting support location; An energy storage component (3) for storing kinetic energy and releasing electrical energy; A cable limiting assembly (5), used to prevent the cable from detaching; The triangular frame is composed of a bottom plate (1) and two inclined plates (2), and the bottom plate (1) and the two inclined plates (2) form a triangular structure; The energy storage component (3) comprises: Two motor boxes (304) are mounted on the bottom plate (1) by bolts. A generator (305) is arranged inside the motor box (304). The output shaft of the generator (305) is connected to the engine (306) for converting mechanical kinetic energy into electrical energy. The output shaft of the engine (306) is connected to a winding disk (307). The winding disk (307) is wound with a cable (303). The cable (303) passes around the sliding shaft (4) and is connected to the weight block (301). A plurality of bearings are sleeved on the axial direction of the sliding shaft (4).

2. A symmetrical double-slope tower gravity energy storage power generation system according to claim 1, characterized in that: The inclined plate (2) has an inclination angle of 60-85°, and the vertical distance between the top of the inclined plate (2) and the bottom plate (1) is 30-300 m.

3. A symmetrical double-slope tower gravity energy storage power generation system according to claim 1, characterized in that: The weight block (301) is connected to four rollers, a slide rail (302) is provided on the surface of the inclined plate (2), and the rollers are slidably connected to the slide rail (302) and partially adapted.

4. A symmetrical double-slope tower gravity energy storage power generation system according to claim 1, characterized in that: Support plates are movably connected to both sides of the sliding shaft (4), and the support plates are fixed to the inclined plate (2) by bolts.

5. A symmetrical double-slope tower gravity energy storage power generation system according to claim 1, characterized in that: A winding shaft (309) is inserted into the two winding discs (307), and one end of the winding shaft (309) is connected to the output shaft of the engine (306); One end of one of the winding disks (307) is connected to a slip ring (308), and one end of the other winding disk (307) is provided with an inner ring (316) and an axial hole (317); The slip ring (308) is slidably connected to the inner ring (316) and is adapted to fit each other; One end of the reeling shaft (309) is inserted into the shaft hole (317).

6. A symmetrical double-slope tower gravity energy storage power generation system according to claim 1, characterized in that: A plurality of heat dissipation holes (311) are provided on both sides of the inner wall of the motor box (304); Cooling fans (310) are mounted on both sides of the motor box (304) via bolts.

7. A symmetrical double-slope tower gravity energy storage power generation system according to claim 1, characterized in that: Insertion plates (312) are also provided on both sides of the motor box (304), and three filter screens (313) are connected inside the insertion plates (312); Slide plates (315) are provided on both sides of the plug plate (312); the slide plates (315) are fixed to the outer wall of the motor box (304); the cross section of the slide plate (315) is arranged in a "U"-shaped structure; the slide plate (315) is slidably connected to a slider (314); and the slider (314) is fixed to one side of the plug plate (312).

8. The symmetrical double-slope tower gravity energy storage power generation system according to claim 1, characterized in that: The cable limiting assembly (5) comprises: A mounting box (501) mounted on the motor box (304) by bolts; A cylinder (502) is arranged inside the installation box (501); an extension section of the cylinder (502) is connected to a movable block (503); both sides of the movable block (503) are movably connected to connecting arms (504); one end of the connecting arm (504) is movably connected to a movable arm (505); a rubber block (507) is fixed to one end of the movable arm (505); and one side of the rubber block (507) is in an arc-shaped structure.

9. A symmetrical double-slope tower gravity energy storage power generation system according to claim 8, characterized in that: A sliding rod (506) is inserted into the interior of the movable arm (505), the movable arm (505) is slidably connected to the sliding rod (506), and the installation box (501) is fixedly connected to the sliding rod (506).

10. A symmetrical double-slope tower gravity energy storage power generation system according to claim 8, characterized in that: The installation box (501) is fixed with a fixed plate (508), the fixed plate (508) is fixed with a movable frame (509) via bolts, and the movable frame (509) is movably connected to two movable rollers (510).

Images