Gravity energy storage structure of wind power mixing tower

Abstract

A gravity energy storage structure of a wind power mixing tower comprises the wind power mixing tower, a draught fan and fan blades, a wind power energy storage box is arranged in the draught fan, two electric pulleys are rotationally arranged on the upper middle portion of the wind power mixing tower, a gravity energy storage box is fixedly arranged on the upper middle portion of the wind power mixing tower, and the wind power energy storage box is electrically connected with the electric pulleys through wires. The gravity energy storage box is electrically connected with electric pulleys through an energy conversion system, a first weight and a second weight are hung on the two electric pulleys through two pull wires respectively, the first weight is heavier than the second weight, a transmission mechanism is arranged on the portion, on one side of the first weight, of the wind power mixing tower, and normally-open touch switches are arranged on the pull wires. The wind power energy storage box drives the electric pulley to drive the first weight to ascend and the second weight to descend, when the first weight ascends, the transmission mechanism stirs the normally-open touch switch to be powered off, under the action of gravity, the first weight freely falls to generate kinetic energy, and the kinetic energy is converted into electric energy through the energy conversion system and stored in the gravity energy storage box.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of energy storage, and particularly relates to a gravity energy storage support and connecting structure of a wind power hybrid tower. BACKGROUND

[0002] Gravity energy storage is a mechanical energy storage method that uses height difference to store and release energy. Its basic principle is to convert electrical energy into kinetic energy and further convert it into gravitational potential energy for storage during the low valley period of power load, and convert the gravitational potential energy back into electrical energy during the peak period of power demand.

[0003] In a gravity energy storage system, the energy storage medium is mainly divided into two categories: liquid (mainly water) and solid. When water is used as an energy storage medium, it has strong fluidity and can be transported through well-sealed pipes and shafts, so the site selection is flexible, and the energy storage capacity is restricted by topography and water source conditions. Under normal circumstances, locations close to natural water bodies are more suitable for building large-scale energy storage facilities. In contrast, solid weight type gravity energy storage relies on structures such as mountains, underground shafts or artificial structures for support, and the materials used usually have high density, such as metals, cement and sandstone, etc., to improve the energy storage efficiency per unit volume. This method can effectively overcome the high cost and environmental impact problems faced by traditional battery technology, and has become a promising new clean energy solution.

[0004] However, the application scenarios of gravity energy storage in actual environments are limited, mainly because the requirements for the support structure are extremely strict. In order to support these heavy equipment, a solid ground structure must be built, which not only increases the construction cost, but also increases the difficulty of maintenance, constituting one of the significant challenges faced by gravity energy storage technology. SUMMARY

[0005] The purpose of the present application is to provide a gravity energy storage structure of a wind power hybrid tower, which uses the wind power hybrid tower as a support structure for gravity energy storage, converts the excess energy generated by wind power into kinetic energy of the system, and further converts it into gravitational potential energy, and finally converts it into electrical energy.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows: The gravity energy storage structure of the wind power mixed tower comprises a wind power mixed tower, a fan arranged at the top of the wind power mixed tower, a fan blade arranged on the fan, a wind power energy storage box arranged in the fan, two coaxial electric pulleys arranged at the upper middle part of the wind power mixed tower, and a gravity energy storage box fixedly arranged, the wind power energy storage box is electrically connected with the electric pulleys through wires, the gravity energy storage box is electrically connected with the electric pulleys through an energy conversion system, the first weight and the second weight are hung on the two electric pulleys through a first traction line and a second traction line respectively, the weight of the first weight is greater than that of the second weight, a transmission mechanism is arranged on the wind power mixed tower at the side of the first weight, and a normally open touch switch is arranged on the wire, in working, the wind power energy storage box drives the electric pulley to rotate to one side, drives the first weight to rise and the second weight to descend, drives the transmission mechanism when the first weight rises, the transmission mechanism drives the normally open touch switch to be off, the electric pulley loses driving force, and the first weight freely falls to generate kinetic energy under the action of gravity, the kinetic energy is converted into electric energy by the energy conversion system and stored in the gravity energy storage box.

[0007] Further, the transmission mechanism comprises a transmission rod slidingly arranged on the wind power mixed tower, a driving rod arranged at the lower end of the transmission rod, the driving rod being matched with the first weight, and a driving rod arranged at the upper end of the transmission rod, the driving rod being matched with the normally open touch switch.

[0008] Further, a sliding rail is arranged on the wind power mixed tower, and a sliding block is arranged on the transmission rod and matched with the sliding rail.

[0009] Further, the normally open touch switch comprises a circular touch ring arranged in rotation, a push rod arranged at one side of the circular touch ring, and the driving rod being matched with the push rod.

[0010] The gravity energy storage structure of the wind power mixed tower has the following beneficial effects: 1. Compared with the underground shaft, mountain and artificial structure relied by the traditional gravity energy storage, the mixed tower has higher flexibility in site selection and use, and the material is more economical, the manufacturing, transportation and installation process are more simple, so that the overall cost of the project is effectively reduced.

[0011] 2. Wind power hybrid tower (mixed tower) combines the advantages of concrete and steel structures. Through this combined design, the optimization of economic benefits, stability and adaptability is achieved. This design takes full advantage of the high stiffness, high damping and smaller transportation restrictions of concrete towers, as well as the rapid installation and lightweight characteristics of steel towers, thus showing significant advantages in economy and structural efficiency. Currently, the design height range of hybrid towers is usually between 162 meters and 180 meters, and the specific value depends on the specific design scheme, material selection and technology application. With the increase of height, the gravitational potential energy of the tower also increases, which means that it has stronger potential energy conversion capacity and can generate more electricity. With the continuous development of technology and changes in market demand, the height of hybrid towers is expected to be further improved, making them more suitable for large-scale wind farm construction and operation. Therefore, in the long term, hybrid towers not only have superior performance under current technical conditions, but also will continue to maintain their leading position as efficient gravitational potential energy support structures in future technological evolution.

[0012] 3. By combining wind power technology with gravitational energy storage system, energy consumption can be effectively reduced. Specifically, gravitational energy storage is a technology that uses the gravitational potential energy of objects at high altitudes to store energy. When wind power generates excess electricity, this excess energy can be used to lift heavy objects to a certain height, thereby converting into stored gravitational potential energy at high altitude; while in peak electricity demand or lack of wind, the heavy objects are allowed to descend, generating electricity by releasing the stored gravitational potential energy. This method not only ensures the efficient use of energy and avoids waste, but also has high energy conversion efficiency, long service life and good environmental friendliness. The combination of wind power hybrid tower technology and gravitational energy storage can fully utilize the advantages of both, further improving the efficiency and reliability of the entire wind power system. This method not only enhances the utilization rate of wind energy resources, but also helps to improve the stability of power grid operation and is conducive to controlling the operating cost of wind power projects.

[0013] 4. The combination of wind power and gravitational energy storage technology can effectively utilize the excess energy of wind power system. This integrated solution not only reduces the maximum operating current of the system and the long-term carrying capacity requirement of the cable, but also enhances the thermal stability of the cable in the event of a short circuit. In addition, by reducing the necessary cable cross-sectional area and quantity, the overall cost of the project can be significantly reduced.

[0014] 5. By integrating wind power generation technology with gravity energy storage systems, the phenomenon of power waste can be effectively alleviated, and the overall efficiency of the wind power system can be improved. This integrated method not only reduces the problem of curtailment caused by insufficient grid absorption capacity, but also helps to improve energy utilization and system stability. By combining wind power generation systems with gravity energy storage technology and integrating gravity energy storage devices inside the tower, the idle space of the tower can be effectively utilized. This design avoids waste of space and improves the efficiency of space utilization. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of a gravity energy storage structure of a wind power hybrid tower of the present application; Figure 2 is a schematic diagram of a gravity energy storage structure of a wind power hybrid tower of the present application; Figure 1 is a schematic diagram of a gravity energy storage structure of a wind power hybrid tower of the present application; Figure 3 is a schematic diagram of a gravity energy storage structure of a wind power hybrid tower of the present application; Figure 4 is a schematic diagram of a gravity energy storage structure of a wind power hybrid tower of the present application. DETAILED DESCRIPTION

[0016] The present application will be described in detail below with reference to specific implementation cases, which will help those skilled in the art to further understand the present application, but do not limit the present application in any form.

[0017] As shown in Figure 1 — Figure 4 The present application relates to a gravity energy storage structure of a wind power hybrid tower, which includes a wind power hybrid tower 1, a wind turbine 2 arranged at the top of the wind power hybrid tower, a wind blade 3 arranged on the wind turbine, a wind power energy storage box 4 arranged in the wind turbine 2, two coaxial electric pulleys 5 rotatably arranged at the upper middle part of the wind power hybrid tower 1, and a gravity energy storage box 6 fixedly arranged, the wind power energy storage box 4 is electrically connected to the electric pulley 5 through an electric wire 7, the gravity energy storage box 6 is electrically connected to the electric pulley 5 through an energy conversion system, a first weight 9 and a second weight 10 are hung on the two electric pulleys 5 through a first traction line 14 and a second traction line 141 respectively, the first weight 9 is heavier than the second weight 10, a transmission mechanism is arranged on the wind power hybrid tower 1 at the side of the first weight 9, and a normally open touch switch 8 is arranged on the electric wire 7.

[0018] The transmission mechanism includes a transmission rod 11 slidably arranged on the wind power hybrid tower 1, a driving rod 12 arranged at the lower end of the transmission rod 11, the driving rod 12 cooperates with the first weight 10, a push rod 13 arranged at the upper end of the transmission rod 11, the push rod 13 cooperates with the normally open touch switch 8.

[0019] The normally open touch switch 8 includes a circular contact ring 17 rotatably arranged, a push rod 18 arranged at one side of the circular contact ring 17, and the push rod 18 cooperates with the push rod 13.

[0020] The energy conversion system is the prior art, including the PCS system and the generator set, both of which are integrated in the gravity energy storage box 6, and the main shaft of the generator set is connected with the rotating shaft of the two motor pulleys 5 through the one-way rotation connector.

[0021] In operation, the wind power energy storage box 4 drives the motor pulley 5 to rotate to one side, driving the first weight 9 to rise and the second weight 10 to fall. When the first weight 9 rises, it contacts the driving rod 12, and in the rising process, it drives the transmission rod 11 to slide upwards, so that the actuating rod 13 contacts the push rod 18 of the normally open touch switch 8, pushes the circular contact ring 17 to rotate, and makes the normally open touch switch 8 close, the power line 6 is powered off, and the motor pulley 5 loses driving force. Under the action of gravity, the first weight 9 freely falls, generating kinetic energy, which is converted into electrical energy by the energy conversion system. The conversion process is: the rotating motor pulley drives the rotor of the generator set (usually a DC generator or an AC generator) to rotate through the rotating shaft, the rotating coil (or permanent magnet) cuts the magnetic induction line, and according to Faraday's law of electromagnetic induction, an induced electromotive force (voltage) will be generated in the coil. If the circuit is closed, an induced current will be generated, which is then converted into electrical energy by the PCS system and stored in the gravity energy storage box 6, completing the gravity energy storage.

[0022] Further, the wind power hybrid tower 1 is provided with a sliding rail 15, and the transmission rod 11 is provided with a sliding block 16, which cooperates with the sliding rail 15 to make the transmission rod slide smoothly.

[0023] The above specific embodiments are used to explain and illustrate the present application, rather than limit the present application. Any modification and change made to the present application within the spirit and protection scope of the claims falls within the protection scope of the present application.

Claims

1. A gravity energy storage structure of a wind power hybrid tower, comprising a wind power hybrid tower (1), a wind turbine (2) is arranged at the top of the wind power hybrid tower, and a wind blade (3) is arranged on the wind turbine, characterized in that: The wind fan (2) is provided with a wind power energy storage box (4), the upper part of the wind power mixed tower (1) is provided with two coaxial electric pulleys (5) and a gravity energy storage box (6), the wind power energy storage box (4) is electrically connected with the electric pulley (5) through a wire (7), the gravity energy storage box (6) is electrically connected with the electric pulley (5) through an energy conversion system, the first weight (9) and the second weight (10) are hung on the two electric pulleys (5) through the first traction line (14) and the second traction line (141) respectively, the weight of the first weight (9) is heavier than that of the second weight (10), a transmission mechanism is arranged on the wind power mixed tower (1) on the side of the first weight (9), a normally open touch switch (8) is arranged on the wire (7), when working, the wind power energy storage box (4) drives the electric pulley (5) to rotate to one side, drives the first weight (9) to rise and the second weight (10) to descend, when the first weight (9) rises, the transmission mechanism is driven, the transmission mechanism drives the normally open touch switch (8) to be powered off, the electric pulley (5) loses driving force, under the action of gravity, the first weight (9) freely falls to generate kinetic energy, the kinetic energy is converted into electric energy by the energy conversion system and stored in the gravity energy storage box (6).

2. The wind power hybrid tower gravity energy storage structure of claim 1, wherein The transmission mechanism comprises a transmission rod (11) slidingly arranged on the wind power mixed tower (1), the lower end of the transmission rod (11) is provided with a driving rod (12), the driving rod (12) is matched with the first weight (10), the upper end of the transmission rod (11) is provided with a driving rod (13), the driving rod (13) is matched with the normally open touch switch (8).

3. A wind power hybrid tower gravity energy storage structure as claimed in claim 2, wherein The wind power mixed tower (1) is provided with a sliding rail (15), the transmission rod (11) is provided with a sliding block (16), and the sliding block (16) is matched with the sliding rail (15).

4. The wind power hybrid tower gravity energy storage structure of claim 1, wherein The normally open touch switch (8) comprises a circular touch ring (17) rotatably arranged, a push rod (18) is arranged on one side of the circular touch ring (17), and the driving rod (13) is matched with the push rod (18).

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