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CN-122014547-A - Marine gravity energy storage system

CN122014547ACN 122014547 ACN122014547 ACN 122014547ACN-122014547-A

Abstract

The invention discloses an offshore gravity energy storage system, which comprises a mounting platform and weights pulled by cables, wherein the weights can move up and down in sea water relative to the mounting platform, the weights are provided with a plurality of weights and are arranged along the circumferential direction of the mounting platform, the number of the weights is an even multiple, two weights oppositely arranged in the radial direction of the mounting platform form a working group, at least two reel generating mechanisms are arranged on the mounting platform, the plurality of reel generating mechanisms are arranged in a layered manner in the vertical direction, and each reel generating mechanism comprises a rotary table rotationally arranged on the mounting platform, a bracket fixedly arranged on the rotary table and a winding roll rotationally arranged on the bracket. According to the invention, through the reel generating mechanism with the vertical layered design and the weights arranged circumferentially, the generating and energy storage processes can be continuously carried out, the energy storage efficiency is greatly improved, and after all weights are lowered to the seabed, the installation platform can be anchored to resist extreme weather such as typhoons.

Inventors

  • LING CHANGMING
  • ZHANG BINBIN

Assignees

  • 湖州安太效能科技有限公司

Dates

Publication Date
20260512
Application Date
20260401

Claims (10)

  1. 1. An offshore gravity energy storage system comprises a mounting platform (1) and a weight (3) pulled by a cable (2), wherein the weight (3) can move up and down in sea water relative to the mounting platform (1), the offshore gravity energy storage system is characterized in that the weight (3) is provided with a plurality of generators (44) which are arranged along the circumference of the mounting platform (1), the number of the weights (3) is an even multiple, two weights (3) which are oppositely arranged in the radial direction of the mounting platform (1) form a working group, the mounting platform (1) is provided with a reel generating mechanism (4), the reel generating mechanism (4) comprises a rotary table (41) which is rotationally arranged on the mounting platform (1), a bracket (42) which is fixedly arranged on the rotary table (41), a winding drum (43) which is rotationally arranged on the bracket (42), a driving motor (45) which is arranged on one side of the winding drum (43) and can drive the winding drum (43) to rotate, a generator (45) which is arranged on the other side of the winding drum (43) and is rotationally driven by the winding drum (43), the cable (2) comprises a rotary table (41) which can be wound on the upper half of the winding drum (21), the cable (21) which can be connected with the lower half of the cable (23) and the cable (23) of the cable (23), the utility model provides a take-up reel (43) is located in the initial position that take-up reel (43) was all fixed to first cable (21) and second cable (22), first cable (21) and second cable (22) are both when unreeling through take-up reel (43), wherein another can wind in take-up reel (43), first cable (21) and second cable (22) keep away from the one end of take-up reel (43) and are provided with connecting portion (24), the one end that heavy object cable (23) kept away from heavy object (3) is provided with quick detach head (25), quick detach head (25) are connected with connecting portion (24) can be dismantled, be equipped with heavy object initial limiting device (5) that are close to take-up reel (43) and keep away from heavy object terminal limiting device (6) that heavy object initial limiting device (5) and heavy object terminal limiting device (6) all can carry out spacing to quick detach head (25) on mounting platform (1).
  2. 2. An offshore gravity energy storage system according to claim 1, characterized in that the two sides of the winding roll (43) are provided with transmission gears (46), the driving motor (44) is connected with a motor coupling (47), the motor coupling (47) is connected with a motor gear (48), the motor gear (48) can be directly or indirectly meshed with the transmission gears (46) on one side of the winding roll (43), the generator (45) is connected with a generator coupling (49), the generator coupling (49) is connected with a generator gear (50), and the generator gear (50) can be directly or indirectly meshed with the transmission gears (46) on the other side of the winding roll (43).
  3. 3. An offshore gravity energy storage system according to claim 2, wherein the connection part (24) is inserted in the quick release head (25) for detachable connection with the quick release head (25), or wherein the connection part (24) is screwed into the quick release head (25) for detachable connection with the quick release head (25).
  4. 4. An offshore gravity energy storage system according to claim 3, wherein the initial weight limiting device (5) and the final weight limiting device (6) comprise a limiting seat (61), an inserting opening (62) arranged on the limiting seat (61), a passing opening (63) arranged on the limiting seat (61) and capable of allowing the quick-release head (25) to pass through, and an inserting block (64) capable of being inserted into the inserting opening (62) and reducing the passing area of the passing opening (63), wherein the inserting block (64) is provided with a limiting opening (65) which can be arranged opposite to the passing opening (63).
  5. 5. An offshore gravity energy storage system according to claim 1 or 2 or 3 or 4, characterized in that at least one set of cable support means (7) is arranged on the mounting platform (1) between the initial weight stop means (5) and the final weight stop means (6), each set of cable support means (7) comprising two cable support units (71), each cable support unit (71) comprising a movable support base (72), a lifting cylinder (73) arranged on the support base (72), a slide guide (74) arranged at the end of the lifting cylinder (73) and capable of guiding the cable (2), and a position sensor (75) arranged on the support base (72).
  6. 6. The marine gravity energy storage system according to claim 5, wherein the cable traction device (8) is arranged on the installation platform (1), the cable traction device (8) comprises a traction base (81) which can be arranged in a movable mode, a traction cylinder (82) which is arranged on the traction base (81) and can be arranged in a lifting mode, and a traction head (83) which is arranged at the end portion of the traction cylinder (82), the traction head (83) is provided with a containing groove (84) for containing the cable (2), and the traction head (83) can be abutted with the connecting portion (24) and drive the connecting portion (24) to move.
  7. 7. An offshore gravity energy storage system according to claim 6, wherein at least two reel generating mechanisms (4) are provided, and a plurality of reel generating mechanisms (4) are arranged in a layered manner in the vertical direction, so that the power generation or energy storage process can be continuously performed.
  8. 8. An offshore gravity energy storage system according to claim 7, wherein a pulley frame (411) is provided on the turntable (41), a pulley (412) is rotatably provided on the pulley frame (411), and the upper cable half (21) and the lower cable half (22) pass through the lower surface of the pulley (412).
  9. 9. An offshore gravity energy storage system according to claim 1, wherein the initial position and the final position of the weight (3) are both located in the sea water.
  10. 10. An offshore gravity energy storage system according to claim 9, characterised in that the end position of the weight (3) is located on the seabed, enabling anchoring of the installation platform (1) in extreme weather.

Description

Marine gravity energy storage system Technical Field The invention relates to the technical field of offshore gravity energy storage, in particular to an offshore gravity energy storage system. Background The marine gravity energy storage is a leading edge technology for applying the gravity energy storage principle to a marine environment, and mainly aims to solve the problems of intermittence and fluctuation of marine renewable energy sources (such as marine wind power and the like), and the stability and the energy utilization efficiency of a power system are improved in an energy storage mode. In the prior art, a single weight is generally adopted to carry out gravity energy storage, and the energy storage efficiency and the total energy storage amount are relatively low. In addition, the stability of the system is poor in the face of extreme weather such as typhoons. Disclosure of Invention The invention overcomes the defects of the prior art, and provides an offshore gravity energy storage system which is reasonable in structural design, and the electricity generation and energy storage processes can be continuously carried out through a reel electricity generation mechanism which is vertically layered and a weight which is circumferentially arranged, so that the energy storage efficiency and the total energy storage amount are greatly improved, and after all the weight is lowered to the seabed, the installation platform can be anchored to resist extreme weather such as typhoons. In order to achieve the above purpose, the present invention provides the following technical solutions: An offshore gravity energy storage system comprises a mounting platform and a weight which is pulled by a cable, wherein the weight can move up and down in sea water relative to the mounting platform, the weight is provided with a plurality of weights which are arranged along the circumference of the mounting platform, the number of the weights is a multiple of an even number, two weights which are oppositely arranged in the radial direction of the mounting platform form a working group, a reel generating mechanism is arranged on the mounting platform and comprises a rotary table which is rotationally arranged on the mounting platform, a bracket which is fixedly arranged on the rotary table, a winding roll which is rotationally arranged on the bracket, a driving motor which is arranged on one side of the winding roll and can drive the winding roll to rotate, a generator which is arranged on the other side of the winding roll and is driven by the winding roll to rotate to generate electricity, the cable is including the first cable that can twine in the take-up reel first half, can twine the second cable of taking-up reel second half and the heavy object cable of being connected with the heavy object, first cable and second cable are located the initial end of take-up reel and all fix the bottom position at the take-up reel, first cable and second cable both can wind in the take-up reel when the unreeling through the take-up reel, first cable and second cable are kept away from the one end of take-up reel and are provided with connecting portion, the one end that the heavy object cable was kept away from the heavy object is provided with the quick detach head, quick detach head can dismantle with connecting portion and be connected, be equipped with the heavy object initial stop device that is close to the take-up reel setting and keep away from the heavy object final stop device that the take-up reel set up, heavy object initial stop device and heavy object final stop device all can be spacing to the quick detach head. By adopting the technical scheme, the installation platform can be circular, the situation that the bottom depths of the seabed are different is combined with the actual situation, the shape of the installation platform can be adjusted according to specific seabed depths, such as oval, irregular circular or polygonal, and the like, wherein the winding roll is arranged at the central position of the installation platform approximately, the length of the cable is also arranged according to the depths of different seabed, and the length of the cable with the bottom covered by the heavy object when the seabed is deepest is used as a design standard. The winding roll is driven to rotate in the sinking process of the heavy object so as to generate electricity through the generator, and the winding roll is driven to rotate by the driving motor to wind the cable when the heavy object is pulled up. And through setting up a plurality of weights of even multiples to regard two weights of setting up relatively on the mounting platform as a workgroup, after accomplishing the sinking or the action of pulling up of two weights in a workgroup, through rotating the carousel, dock quick detach head and connecting portion again, continue to carry out the sinking or the action of rising to two weights in another workgroup. Afte