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CN-117267071-B - Water buoyancy type energy storage system and energy storage method

CN117267071BCN 117267071 BCN117267071 BCN 117267071BCN-117267071-B

Abstract

The invention relates to the technical field of energy storage, in particular to a water buoyancy type energy storage system and an energy storage system, wherein the energy storage system comprises a hole, groundwater is contained in the hole, a moving weight is arranged in the hole, the moving weight is connected with a traction rope, a supporting device is arranged on the hole, a steering device is arranged on the supporting device, the traction rope passes through the steering device to be connected with a winding drum, the winding drum is connected with a connecting brake, the connecting brake is connected with a mechanical energy transmission device, the mechanical energy transmission device is connected with a driving and generating integrated machine, and by arranging the hole, a bead type weight, the steering device, the mechanical energy transmission device and the driving and generating integrated machine, external electric energy supplied by a power supply device can be firstly converted into mechanical energy to be stored in the gravity potential energy of the bead type weight.

Inventors

  • LI QIAN

Assignees

  • 唐正储能科技(东营)有限公司

Dates

Publication Date
20260508
Application Date
20230906

Claims (11)

  1. 1. The water buoyancy type energy storage system is characterized by comprising a hole (1), wherein groundwater is contained in the hole (1), a moving weight (2) is arranged in the hole (1), the moving weight (2) is connected with a traction rope (3), a supporting device (5) is arranged on the hole (1), a steering device (4) is arranged on the supporting device (5), the traction rope (3) passes through the steering device (4) to be connected with a winding drum (6), the winding drum (6) is connected with a connecting gate (9), the connecting gate (9) is connected with a mechanical energy transmission device (10), and the mechanical energy transmission device (10) is connected with a driving and generating integrated machine (11); the hole (1) comprises a water-free zone (101) and a water-containing zone (102), the water-free zone (101) comprises a hovering zone (103) for parking a moving weight (2) and an accelerating zone (104) for accelerating the moving weight (2), the water-containing zone (102) comprises a decelerating zone (105), a braking zone (106) is arranged below the decelerating zone (105), and a temporary storage zone (107) for temporarily storing the moving weight (2) is arranged below the braking zone (106); The moving weight (2) is more than two bead weights, each bead weight comprises an inner layer and an outer layer, the inner layer is filled with a composite material, a steel support (2001) is fixed on each bead weight, each steel support (2001) comprises a bottom support (2002), each bottom support (2002) is connected with a central steel cylinder (2003) through a supporting plate (2004), each central steel cylinder (2003) penetrates through the center of each bead weight, each steel support (2001) is provided with a winding area, each winding area comprises a first winding area (2005) and a second winding area (2006) which are oppositely arranged, each winding area is arranged between every two adjacent supporting plates (2004), each winding area is provided with a winding point (2007), each traction rope (3) only penetrates through the central steel cylinder (2003) and each winding point (2007) in one bead weight, and each bead weight moves up and down in each hole (1); The connecting gate (9) comprises a first mortise arm (901) and a second mortise arm (902), a mortise frame (903) is arranged on the mortise arm, the connecting gate (9) further comprises a tenon arm (904), a rigid tenon (905) is arranged on the tenon arm (904), and the rigid tenon (905) protrudes outwards; The mechanical energy transmission device (10) comprises a first gear (1001), the first gear (1001) is arranged in a gear chain (1002), the first gear (1001) is fixedly connected with a tenon arm (904), a second gear (1003) is further arranged in the gear chain (1002), and the gear chain (1002) is in gear connection with the first gear (1001) and the second gear (1003).
  2. 2. The water-buoyancy energy storage system as set forth in claim 1, wherein said bead weight outer layer is made of cowhells and said inner layer is made of polished silicate concrete particles.
  3. 3. The water-buoyancy type energy storage system according to claim 1, wherein the steering device (4) comprises a first connecting shaft (401), the top of the first connecting shaft (401) is fixed on the supporting device (5), the first connecting shaft (401) is rotatably connected with a second connecting shaft (402), a universal wheel (403) is arranged on the second connecting shaft (402), the second connecting shaft (402) is rotatably connected with the universal wheel (403) through a rotating shaft, and the traction rope (3) passes through the universal wheel (403) to be connected with the winding drum (6).
  4. 4. The water buoyancy type energy storage system according to claim 1, wherein the supporting device (5) comprises a concrete foundation (501), a supporting column (502) is arranged on the concrete foundation (501), a supporting frame (503) is arranged on the supporting column (502), a reinforcing plate (504) is arranged between the supporting column (502) and the supporting frame (503), the two supporting frames (503) are connected through a reinforcing rib (505), universal wheels (403) are fixed at the bottoms of the supporting frames (503), and a compass (17) is arranged on the reinforcing rib (505).
  5. 5. The water buoyancy type energy storage system according to claim 1, wherein the winding drum (6) is connected with a first transmission shaft (8), a braking device (7) is arranged on the first transmission shaft (8), the first transmission shaft (8) is further connected with a connecting brake (9), and the second gear (1003) is connected with a driving and power generation integrated machine (11) through a second transmission shaft (18).
  6. 6. The water-buoyancy energy storage system as set forth in claim 1, wherein the traction rope (3) passes through the wire harness tube (16) and is connected with the moving weight (2), the wire harness tube (16) comprises an outer tube wall (1601), a fixed column (1602) is arranged in the center of the wire harness tube (16), the outer tube wall (1601) is connected with the fixed column (1602) through a partition plate (1603), the partition plate (1603) is provided with six and evenly distributed around the fixed column (1602), and the partition plate (1603) divides the wire harness tube (16) into six identical spaces.
  7. 7. A water buoyancy energy storage system according to any one of claims 1-6, wherein the traction rope (3), the steering device (4), the winding drum (6), the braking device (7), the first transmission shaft (8) and the connecting brake (9) are respectively provided with more than two traction ropes (3) wound on a winding point (2007) of a bead weight, then the traction rope (3) passes through a space in the wire winding drum (16) and passes through only one universal wheel (403) to be wound on one winding drum (6), the universal wheel (403) and the winding drum (6) are provided with only one traction rope (3), one winding drum (6) is connected with one connecting brake (9) through one first transmission shaft (8), one bead weight, the traction rope (3), the steering device (4), the winding drum (6), the braking device (7), the first transmission shaft (8) and the connecting brake (9) are provided with more than two groups of energy storage transmission devices, and the energy storage transmission devices can be connected with the two groups of energy storage transmission devices (10) through a first gear (904) independently.
  8. 8. The water buoyancy type energy storage system according to claim 7, wherein the integrated driving and generating machine (11) is connected with a power supply device (15), the power supply device (15) is used for supplying electric energy generated by a power grid or other power generation devices to the integrated driving and generating machine (11), the integrated driving and generating machine (11) is further connected with an electric energy quality rectifying device (12), the electric energy quality rectifying device (12) is connected with a transformer (13), the transformer (13) is connected with the power grid (14), and the electric energy quality rectifying device (12) is an inverter.
  9. 9. The water-buoyancy energy storage system as claimed in claim 8, wherein the moving weight (2) comprises six bead weights, namely a first bead weight (201), a second bead weight (202), a third bead weight (203), a fourth bead weight (204), a fifth bead weight (205) and a sixth bead weight (206), which are arranged in sequence from top to bottom.
  10. 10. An energy storage method using the water buoyancy type energy storage system as claimed in claim 9 is characterized in that when energy is stored, firstly a group of energy storage transmission devices with bead type weights at the uppermost end enter a lifting state, a brake device (7) in the group is opened, a connection brake (9) is closed, at the moment, the connection brake (9) in other groups of energy storage transmission devices are in an opened state, the brake device (7) is in a braking state, then the system utilizes a power supply device (15) to transmit current in the power supply device (15) to a power generation integrated machine (11), the power generation integrated machine (11) drives a mechanical energy transmission device (10) to rotate, thereby driving the connection brake (9) to rotate, the connection brake (9) drives a reel (6) to rotate through a first transmission shaft (8), the reel (6) drives bead type weights to lift to a hovering area (103), after the bead type weights are lifted, the power supply device (15) stops supplying power, the power generation integrated machine (11) and the mechanical energy transmission device (10) stops rotating, the brake device (7) in the group of energy storage transmission device is in a braking state, the corresponding state is in a lifting mode, all bead type weights are lifted in turn, all bead type weights are lifted in the same lifting mode, and all bead type weights are lifted in the bead type lifting mode after all bead type weights are lifted, all the connecting gates (9) are in an open state, and the energy storage is completed at the moment.
  11. 11. The energy storage method as set forth in claim 10, wherein when the energy is discharged, a group of energy storage transmission devices with bead-type weights at the lowest end enter a descending state, at the moment, a brake device (7) in the group of energy storage transmission devices is in an open state, a connecting brake (9) is in a closed state, the connecting brake (9) in other groups of energy storage transmission devices are in an open state, the brake device (7) is in a brake state, the bead-type weights in the group descend, the bead-type weights drive a winding drum (6) to rotate through a traction rope (3), the winding drum (6) drives a mechanical energy transmission device (10) to rotate through a first transmission shaft (8) and the connecting brake (9), the mechanical energy transmission device (10) drives a drive-generation integrated machine (11) to generate electricity, and current is transmitted to an electric energy quality rectifying device (12) through a transmission wire to rectify, then the electric energy is transmitted to a transformer (13), after voltage is changed in the transformer (13), the bead-type weights drive the winding drum (6) to rotate, and the brake device (7) in the group of energy storage transmission devices are in a brake state after the bead-type weights are discharged; then the bead weights in other groups of energy storage transmission devices are sequentially lowered in the same manner as the lowest bead weight until all the bead weights are lowered to the temporary storage area (107), all the braking devices (7) are in a braking state after all the bead weights are lowered, all the connecting brakes (9) are in an open state, and finishing the energy release at the moment.

Description

Water buoyancy type energy storage system and energy storage method Technical Field The invention relates to the technical field of energy storage, in particular to a water buoyancy type energy storage system and an energy storage method. Background In recent years, the global temperature of the land is higher, and the global temperature of 2022 is taken as an example, wherein the north part of Asia, the middle Asia, the east part of West Asia, the north part of Europe, the west part of Greenland and the like are higher by more than 1 ℃, the middle part of North America is lower by 1-2 ℃, the average global temperature of the land is higher by 1.67 ℃ than the average 1850-1900, and the average global temperature of the land is the fourth highest in 1850. The average air temperature of 2022 global month is 0.24 ℃ lower than that of 12 months, and the rest months are higher than the perennial period, wherein the air temperature of 10 months is 0.86 ℃ from the average. The global warming is caused by the factors of population rapid increase, atmospheric environmental pollution, land destruction, toxic waste pollution, water pollution and the like. Population rapid increase is one of the main factors causing global warming, and since people burn fossil fuels such as petroleum, coal, etc., or cut forests and burn them, a large amount of carbon dioxide is generated, the temperature of the earth increases, that is, the greenhouse effect. When the greenhouse effect is continuously accumulated, the energy absorbed and emitted by the ground gas system is unbalanced, and the energy is continuously accumulated in the ground gas system, so that the temperature is increased, and the phenomenon of global climate warming is caused. To cope with this phenomenon of global warming, 178 contracting parties worldwide have jointly signed the paris protocol (THE PARIS AGREEMENT), which is a unified arrangement of actions to cope with climate change worldwide after 2020, and a long-term goal of the paris protocol is to control the global average air temperature within 2 degrees celsius compared with the rising amplitude of the previous industrialized period and to try to limit the rising amplitude of the temperature within 1.5 degrees celsius. Therefore, the development of green energy sources such as solar energy, wind energy and the like is imperative, however, the solar energy and the wind energy are matched with energy storage equipment, so that the demand of society on electric power can be met. At present, widely applied chemical energy storage is a lithium battery, lithium is a rare element in nature, the manufacturing cost is high, the lithium battery is easy to reduce, potential safety hazards exist, the requirement on future recycling and environmental protection is high, the pumped storage cost is high, the manufacturing cost is limited by the geographic environment, and places without ground potential difference and enough water sources can not be constructed. Therefore, the invention provides a water buoyancy gravity energy storage technology. Disclosure of Invention The invention aims to solve the problems of high manufacturing cost, high requirements on environmental protection and recovery and geographic conditions and short service life in the prior art. The technical scheme of the invention provides a water buoyancy type energy storage system, which comprises a hole, wherein groundwater is contained in the hole, a moving weight is arranged in the hole, the moving weight is connected with a traction rope, a supporting device is arranged on the hole, a steering device is arranged on the supporting device, the traction rope passes through the steering device to be connected with a winding drum, the winding drum is connected with a connecting brake, the connecting brake is connected with a mechanical energy transmission device, and the mechanical energy transmission device is connected with a driving and power generation integrated machine. As a preferable technical scheme, the hole comprises a water-free area and a water-containing area, wherein the water-free area comprises a hovering area for parking a moving weight and an accelerating area for accelerating the moving weight, the water-containing area comprises a decelerating area, a braking area is arranged below the decelerating area, and a temporary storage area for temporarily storing the moving weight is arranged below the braking area. As a preferred technical scheme, the motion heavy object includes more than two pearl formula heavy objects, the pearl formula heavy object includes inlayer and skin, and the inlayer is filled with combined material, be fixed with the steel support on the pearl formula heavy object, the steel support includes the collet, the collet passes through the backup pad and links to each other with a center rigid section of thick bamboo, a center steel section of thick bamboo runs through pearl formula heavy object center, be equipped