CN117869190A - Gravity energy storage device based on retired fan blade - Google Patents

Abstract

The invention relates to the technical field of gravity energy storage, in particular to a gravity energy storage device based on retired fan blades, which comprises a sliding rail and a mountain body, wherein the mountain body comprises a mountain top plane and a mountain bottom plane, a sliding mechanism capable of moving along the sliding rail direction is arranged on the sliding rail, the sliding mechanism comprises a sliding supporting surface, a sliding front baffle and a sliding rear baffle are fixedly connected to two sides of the top of the sliding supporting surface respectively, and the arrangement directions of the sliding front baffle and the sliding rear baffle are consistent with the laying direction of the sliding rail.

Description

A gravity energy storage device based on retired wind turbine blades

Technical Field

The invention relates to the technical field of gravity energy storage, and in particular to a gravity energy storage device based on retired wind turbine blades.

Background technique

In order to cope with the problem of unstable power output caused by the large volatility of new energy and to make more effective use of abundant clean energy, it is generally necessary to establish energy storage devices of a certain capacity in areas rich in wind energy. At present, the more mature energy storage methods in the energy storage industry have more or less disadvantages. For example, pumped storage requires harsh terrain conditions, flywheel energy storage requires harsh equipment conditions, and chemical energy storage is more dangerous. Gravity energy storage has less pollution to the environment and has small capacity restrictions. It is undoubtedly a good solution for "peak shaving and valley filling".

In the prior art, a deep well stable gravity energy storage system, such as that disclosed in patent application number "CN202310382611.6", includes multiple groups of gantry moving devices, a power generation drive device, a winch device, a steel cable, a grabbing device, a concrete weight and a foundation; the power generation drive device is connected to the winch device, a steel cable is wound around the winch device, and a grabbing device is connected to the lower end of the steel cable, and the grabbing device is used to grab the concrete weight.

However, the existing gravity energy storage solutions use energy storage loads such as concrete blocks, which will inevitably pollute the environment during the production process. At the same time, it is necessary to build equipment with height differences to lift and release the loads, which has high construction costs and is not easy to promote and use.

Summary of the invention

The object of the present invention is to provide a gravity energy storage device based on retired wind turbine blades to solve the problems raised in the above-mentioned background technology.

The purpose of the present invention can be achieved through the following technical solutions:

A gravity energy storage device based on retired wind turbine blades comprises a slide rail and a mountain body, wherein the mountain body comprises a top plane and a bottom plane, wherein a slide mechanism movable along the direction of the slide rail is arranged on the slide rail, wherein the slide mechanism comprises a slide support surface, wherein two sides of the top of the slide support surface are respectively fixedly connected with a slide front baffle plate and a slide rear baffle plate, wherein the setting direction of the slide front baffle plate and the slide rear baffle plate is consistent with the laying direction of the slide rail, wherein a load is arranged on the slide support surface and between the slide front baffle plate and the slide rear baffle plate, wherein the load is a retired wind turbine blade;

A generator motor and a gear transmission are installed on the top of the mountain top plane, a coupling is fixedly installed on the output end of the gear transmission, the coupling and the rotor shaft of the generator motor are fixedly installed, a pulley is fixedly connected to the input end of the gear transmission, a rotatable conversion shaft is arranged on the top of the mountain top plane, a gear belt is arranged between the conversion shaft and the pulley, a steel cable is fixedly connected to the conversion shaft, and one end of the steel cable away from the conversion shaft is connected to the sliding front baffle, which is used to drive the sliding front baffle to move, so that the sliding support surface and the load object move together along the direction of the slide rail.

Preferably, a mountain slope is provided between the mountain top plane and the mountain bottom plane, at least two groups of slide rails are provided, the slide rails are all laid on the mountain slope and the mountain bottom plane connected to the slope, the slide rails are arranged in parallel, and the intervals between any two adjacent slide rails are equal.

Preferably, a speed bump is provided on the slide rail at the junction of the bottom plane of the mountain and the slope of the mountain, and the speed bump and the slide rail are provided in a one-to-one correspondence.

Preferably, one side of the sliding front baffle is fixedly connected to a front connecting ear, one side of the sliding rear baffle is fixedly connected to a rear connecting ear, and one end of the steel cable is fixedly connected to the front connecting ear to drive the sliding mechanism to move toward the mountain top plane.

Preferably, an electric winch is fixedly installed on the bottom plane of the mountain and at the end of the slide rail, a rope is fixedly connected to the electric winch, a "J"-shaped hook is provided at the end of the rope away from the electric winch, and the "J"-shaped hook is installed in the rear connecting ear for pulling the sliding mechanism to move in the direction of the electric winch.

Preferably, multiple rows of mountain top lifting devices are fixedly installed on the top of the mountain slope, and multiple rows of mountain bottom lifting devices are fixedly installed on the top of the mountain bottom plane. The mountain top lifting devices and the mountain bottom lifting devices are staggered with slide rails, and the mountain top lifting devices and the mountain bottom lifting devices are both provided with bearing platforms, which are used to carry loads.

Preferably, positioning baffles are fixedly connected to both sides of the bearing platform, a horizontal base is arranged at the bottom of the bottom lifting device, and an inclined base is arranged at the bottom of the top lifting device.

Preferably, a plurality of support seats are fixedly connected to the bottom of the load-bearing object, and two inclined limit baffles are fixedly connected to the bottom of the support seats.

Preferably, a plurality of shaft frames are fixedly installed on the top of the mountain top plane, and the conversion shaft and the shaft frame are rotatably connected.

Preferably, a column is fixedly installed at the top of the mountain slope and at one end of the slide rail, and a pulley is provided on the top of the column, and the pulley is used to provide guidance for the movement of the steel cable.

Beneficial effects of the present invention:

The present invention utilizes retired wind turbine blades as loads, which can reasonably handle retired old wind turbine blades, reduce renovation and recycling costs, protect the environment, make full use of the terrain of the mountain, and can also allow the load to store and release energy on the slope of the mountain. The mountain gravity energy storage method is used to reduce the peak and fill the valley of wind power generation, which can supply power to wind power generation equipment in use and effectively solve the problem of wind abandonment. In addition, it can respond flexibly to the needs of the power grid. According to actual project needs, the number of rows of the mountain top lifting device and the mountain bottom lifting device can be increased and the number of wind turbine blades used as loads can be increased accordingly to increase the energy storage capacity.

The present invention uses wind turbine blades as loads in mountainous terrain, which can not only reduce resource consumption in the production process of other types of loads by using local materials and avoid environmental pollution, but also reduce carbon footprint and alleviate environmental impact. There is no need to consider the accuracy requirements of the crane when stacking the loads. In addition, considering the disadvantage of low energy density of existing gravity energy storage devices, the use of retired wind turbine blades with larger unit mass can improve power generation efficiency and increase energy density.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work.

Fig. 1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a schematic structural diagram of the gearbox of FIG1 of the present invention;

FIG3 is a schematic structural diagram of the mountain bottom plane in FIG1 of the present invention;

FIG4 is a schematic diagram of the structure of the load in FIG3 of the present invention;

FIG5 is a schematic structural diagram of the sliding support surface in FIG3 of the present invention;

FIG6 is a schematic structural diagram of the bottom mountain lifting device in FIG1 of the present invention;

FIG. 7 is a schematic structural diagram of the mountain top lifting device in FIG. 1 of the present invention.

The reference numerals in the figures are as follows:

101. Top plane, 102. Bottom plane, 103. Mountain slope, 1. Load, 3. Steel cable, 4. Bottom lifting device, 401. Horizontal base, 5. Top lifting device, 501. Inclined base, 6. Slide rail, 7. Column, 8. Conversion shaft, 9. Axle frame, 10. Generator, 11. Coupling, 12. Gear box, 13. Gear belt, 14. Pulley, 15. Pulley, 16. Speed reduction belt, 17. Rope, 18. Electric winch, 20. Loading platform, 201. Positioning baffle, 21. Sliding support surface, 22. Sliding front baffle, 221. Front connecting ear, 23. Sliding rear baffle, 231. Rear connecting ear, 26. Support seat, 27. Limit baffle.

Detailed ways

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.

A gravity energy storage device based on retired wind turbine blades, comprising a slide rail 6 and a mountain body, wherein the mountain body comprises a top plane 101 and a bottom plane 102, wherein a slide mechanism movable along the direction of the slide rail 6 is arranged on the slide rail, wherein the slide mechanism comprises a slide support surface 21, wherein two sides of the top of the slide support surface 21 are respectively fixedly connected with a slide front baffle 22 and a slide rear baffle 23, wherein the setting direction of the slide front baffle 22 and the slide rear baffle 23 is consistent with the laying direction of the slide rail 6, wherein a load 1 is arranged on the slide support surface 21 and between the slide front baffle 22 and the slide rear baffle 23, wherein the load 1 is a retired wind turbine blade;

The design standards for wind turbines clearly stipulate that the service life of wind turbines is 20 years. Since the 1980s, my country's wind power industry has undergone a long period of development, and a considerable number of wind farms have aged. For safety reasons, wind turbines that have reached the specified service life should be retired as planned.

At present, my country generally adopts refurbishment and reuse or recycling for retired wind turbine blades. On the one hand, considering that the installed capacity of old units may be backward and the refurbishment cost is expensive, on the other hand, considering that recycling is not technically mature and the cost-effectiveness is not high. A wind turbine blade weighs about 6-8 tons. It is a feasible way to transform retired wind turbine blades and use them as load objects for gravity energy storage1.

A generator motor 10 and a gear transmission 12 are installed on the top of the mountain top plane, a coupling 11 is fixedly installed on the output end of the gear transmission 12, the coupling 11 and the rotor shaft of the generator motor 10 are fixedly installed, and a pulley 14 is fixedly connected to the input end of the gear transmission 12. A rotatable conversion shaft 8 is provided on the top of the mountain top plane, a gear belt 13 is provided between the conversion shaft 8 and the pulley 14, a steel cable 3 is fixedly connected to the conversion shaft 8, and one end of the steel cable 3 away from the conversion shaft 8 is connected to the sliding front baffle 22, which is used to drive the sliding front baffle 22 to move, so that the sliding support surface 21 and the load 1 move together along the direction of the slide rail 6.

At the end of the slide rail 6 at the top of each mountain slope, a column 7 is arranged opposite to it. A pulley 15 is fixedly arranged on the top of the column 7 through a mounting frame. Each slide rail 6 is correspondingly provided with a steel cable 3. One end of the steel cable 3 is fixedly connected to the front connecting ear 221 on the sliding front baffle 22 of the sliding mechanism, and the other end thereof passes through the groove on the upper surface of the pulley 15 and is fixedly connected to the conversion shaft 8. The pulley 15 can be used to guide the movement of the steel cable.

All electrical equipment are connected to an external power supply and can be driven by the external power supply. The load 1 is the wind turbine blades that are already on the mountain and have been retired. There is no need to specially manufacture or transport the load 1.

A sliding mechanism is arranged in each slide rail 6; all the sliding mechanisms are used in parallel to transport the load 1 up or down along the slide rail 6; they are composed of a rolling device and the bottom of the sliding support surface 21 and are mechanically fixed, and the sliding support surface 21 is anti-slip treated; the base size of the sliding mechanism is consistent with the size of the positioning frame of the load 1, but the direction of the baffle is different, which can be mechanically connected to prevent the load position from shifting.

The load 1 is obtained by cutting off the tip of a retired fan blade, and the weight of the retired fan blade is greater than 1 ton; as an embodiment, the retired fan blade model is TPI-37C, and the weight of a single blade is about 5.7 tons. The length of the load 1 is greater than the distance between the innermost slide rail 6 and the outermost slide rail 6.

The length and setting of the steel cables 3 and ropes 17 on the multiple slide rails 6 are the same, so that the multiple sliding mechanisms are in a horizontal row, so that the movement of the load 1 on the multiple slide rails 6 can remain stable; multiple electric winches 18 are controlled by a switch to make the movements of the multiple sliding mechanisms consistent.

A mountain slope 103 is arranged between the mountain top plane 101 and the mountain bottom plane 102. At least two groups of slide rails 6 are arranged. The slide rails 6 are laid on the mountain slope 103 and the mountain bottom plane 102 connected to the slope. The slide rails 6 are arranged in parallel, and the intervals between any two adjacent slide rails 6 are equal.

A speed reduction belt 16 is provided on the slide rail 6 at the junction of the bottom plane 102 of the mountain and the slope 103 of the mountain, and the speed reduction belt 16 and the slide rail 6 are provided in a one-to-one correspondence.

The speed bump 16 can decelerate the sliding mechanism (the sliding mechanism consists of three parts: a sliding support surface 21, a sliding front baffle plate 22 and a sliding rear baffle plate 23) when it moves to the bottom plane 102 of the mountain, thereby avoiding safety hazards caused by excessive sliding speed of the sliding mechanism, and at the same time improving the deceleration capacity of the sliding mechanism, so that the sliding mechanism can stop moving within a shorter distance.

A front connecting ear 221 is fixedly connected to one side of the sliding front baffle 22, a rear connecting ear 231 is fixedly connected to one side of the sliding rear baffle 23, and one end of the steel cable 3 is fixedly connected to the front connecting ear 221 to drive the sliding mechanism to move toward the mountain top plane.

An electric winch 18 is fixedly installed on the bottom plane 102 and at the end of the slide rail 6, and a rope 17 is fixedly connected to the electric winch 18. A "J"-shaped hook is provided at the end of the rope 17 away from the electric winch 18. The "J"-shaped hook is installed in the rear connecting ear 231 and is used to pull the sliding mechanism to move in the direction of the electric winch 18.

As shown in Figures 3 and 5, the "J"-shaped hook (not shown in the figures) is a prior art, and the use of the "J"-shaped hook and the connecting ear for connection is a prior art, which will not be described in detail here. The "J"-shaped hook matches the rear connecting ear 231; the "J"-shaped hook is inserted into the rear connecting ear 231 on the sliding rear baffle 23, and the electric winch 18 is started, so that the sliding mechanism can be pulled in the direction toward the electric winch 18.

Multiple rows of mountain top lifting devices 5 are fixedly installed on the top of the mountain slope 103, and multiple rows of mountain bottom lifting devices 4 are fixedly installed on the top of the mountain bottom plane 102. The mountain top lifting devices 5 and the mountain bottom lifting devices 4 are staggered with the slide rails 6. The mountain top lifting devices 5 and the mountain bottom lifting devices 4 are both provided with bearing platforms 20, and the bearing platforms 20 are used to bear the load 1.

As shown in Fig. 1, Fig. 6 and Fig. 7, the top lifting device 5 and the bottom lifting device 4 are lifting devices in the prior art, which can drive the bearing platform 20 to move up and down. A row of multiple bottom lifting devices 4 are controlled by a switch, so that a row of multiple bottom lifting devices 4 can synchronously perform the operation of lifting, lowering and stopping, and different rows of bottom lifting devices 4 are controlled by different switches; similarly, a row of multiple top lifting devices 5 are controlled by a switch, so that a row of multiple top lifting devices 5 can synchronously perform the operation of lifting, lowering and stopping, and different rows of top lifting devices 5 are controlled by different switches;

The mountain top lifting device 5 is used for storing the load 1 on the mountain top, and the mountain bottom lifting device 4 is used for storing the load 1 at the bottom of the mountain. When the mountain top lifting device 5 or the mountain bottom lifting device 4 has a load 1 placed on it, its height is at the highest state, and when the load 1 is unloaded, its height is at the lowest state; when the mountain top lifting device 5 and the mountain bottom lifting device 4 are lifted to the highest position, the bottom plate of its top platform is at least higher than the sum of the top height of the sliding mechanism and the height of the positioning frame at the bottom of the load 1, so that the load 1 can be smoothly separated from the sliding mechanism; when the mountain top lifting device 5 and the mountain bottom lifting device 4 are lowered to the lowest position, the top of its top platform is at least lower than the base of the sliding mechanism, so that the top platform of the lifting device does not interfere with the sliding of the sliding mechanism.

The number of rows of the mountain top lifting device 5 and the mountain bottom lifting device 4 is equal and consistent with the number of loads 1. The energy storage capacity of the device can be increased by increasing the corresponding number of rows and the number of loads 1.

During the peak period of electricity consumption, the row of mountain top lifting devices 5 with the lowest horizontal position and the load 1 stored therein is released first, and transported to the row of mountain bottom lifting devices 4 with no load 1 stored therein and farthest from the mountain top by the sliding mechanism. During the low-peak period of electricity consumption, the row of mountain bottom lifting devices 4 with the load 1 stored therein and closest to the mountain top is taken first, and transported to the row of mountain top lifting platform groups 5 with the highest horizontal position and no load 1 stored therein by the sliding mechanism.

Positioning baffles 201 are fixedly connected to both sides of the bearing platform 20 , a horizontal base 401 is arranged at the bottom of the bottom lifting device 4 , and an inclined base 501 is arranged at the bottom of the top lifting device 5 .

As shown in FIG. 6 and FIG. 7 , the slope of the inclined base 501 is consistent with the slope of the mountain slope 103 , which can ensure the horizontal lifting of the supporting platform 20 above the mountain top lifting device 5 .

A plurality of support seats 26 are fixedly connected to the bottom of the load 1 , and two inclined limit baffles 27 are fixedly connected to the bottom of the support seats 26 .

The laying direction of the sliding front baffle 22 and the sliding rear baffle 23 is perpendicular to the setting direction of the limit baffle 27 on the load 1, and is used to limit the change of the position of the load 1 when the sliding mechanism carries the load 1.

A plurality of shaft frames 9 are fixedly installed on the top of the mountain top plane 101, and the conversion shaft 8 and the shaft frame 9 are rotatably connected.

As shown in Figures 1 and 2, the conversion shaft 8 is fixedly installed on the plane of the top of the mountain connected to the slope of the mountain through multiple shaft frames 9, wherein the axis is perpendicular to the slide rail 6 in space, each slide rail 6 corresponds to a shaft frame, and the conversion shaft 8 is movably installed on the shaft frame 9 through a bearing; a through hole is provided in the middle of the conversion shaft 8 part inside each shaft frame 9 for fixing and connecting the steel cable 3; a circle of teeth parallel to the central axis of the conversion shaft 8 is provided on the outer periphery of the conversion shaft 8 part between the two shaft frames 9, and a gear is fixedly installed on the input end of the gearbox 12, and the connection between the conversion shaft 8 and the gearbox 12 is realized by fitting a matching gear belt 13 between the toothed part of the conversion shaft 8 and the input end of the gearbox 12. The output end of the gearbox 12 is connected to the rotor shaft of the generator motor 10 through a coupling 11.

The generator motor 10 is a motor device that can be used as both a generator and a motor. Its principle is similar to that of the generator motor of a pumped storage power station. After the generator motor 10 is connected to the mains, its rotor rotates under the action of the magnetic field to generate mechanical energy, which is transmitted to the conversion shaft 8 through the gear box 12. The conversion shaft 8 drives the load 1 to move toward the mountain top lifting device 5. When the load 1 is released from the mountain top lifting device 5, it drives the conversion shaft 8 to rotate under the action of gravity, and then drives the rotor shaft of the generator motor 10 to rotate through the gear box 12. Using the principle of "electromagnetic induction", the generator will output an induced electromotive force, and current can be generated through a closed load circuit, and then the current is transmitted to the power end through the conductive wire. The generator motor 10 is a prior art and will not be described in detail here.

A column 7 is fixedly installed at the top of the mountain slope 103 and at one end of the slide rail 6 , and a pulley 15 is arranged on the top of the column 7 , and the pulley 15 is used to provide guidance for the movement of the steel cable 3 .

At the end of the slide rail 6 at the top of each mountain slope, a column 7 is arranged opposite to it, and a pulley 15 is fixedly arranged on the top of the column 7 through a mounting frame. Each slide rail 6 is correspondingly provided with a steel cable 3, one end of the steel cable 3 is fixedly connected to the front connecting ear 221 of the sliding front baffle 22 of the sliding mechanism, and the other end thereof passes through the groove on the upper surface of the pulley 15 and is fixedly connected to the conversion shaft 8.

The working principle of a gravity energy storage device based on retired wind turbine blades provided by the present invention is as follows:

First, a crane is used to place a load 1 on a bottom lift 4 or a top lift 5 (depending on the location of the scrapped wind turbine blades. Generally, the scrapped wind turbine blades come from nearby wind farms, and can also be transported to the installation location from other places). For example, when the load 1 is initially placed on the bottom lift 4, when energy is stored during the valley period, the "J"-shaped hook at the end of the rope 17 of each electric winch 18 is inserted into the connecting ear on the sliding rear baffle 23 of the sliding mechanism, and the electric winch 18 is started to make the rope 17 drive the sliding mechanism to move along the slide rail 6. The bottom lifting device 4 moves in the direction to the bottom of the mountain where the load 1 is stored and is closest to the top of the mountain. When the sliding mechanism is horizontally aligned with the bottom lifting device 4, the load platform 20 of the bottom lifting device 4 is controlled to descend, so that the top platform of the bottom lifting device 4 lowers the load 1 until the limit baffle 27 under the load 1 is fully engaged with the sliding front baffle 22 and the sliding rear baffle 23 on the sliding mechanism. At this time, the load 1 is completely separated from the bottom lifting device 4, and the bottom lifting device 4 continues to be controlled to descend to the lowest position, and the rope 17 is disconnected from the sliding mechanism.

Then, the city electricity during the off-peak period is transmitted to the generator motor 10, and the rotor shaft of the generator motor 10 rotates to generate mechanical energy, which is transmitted to the conversion shaft 8 through the gear box 12. The conversion shaft 8 rotates, so that the steel cable 3 fixed on the conversion shaft 8 is wound around the conversion shaft 8, and drives the sliding mechanism fixed at the end of the steel cable 3 to slide toward the top of the mountain. The load 1 fixed on the sliding mechanism slides synchronously toward the top of the mountain to above the designated row of the top of the mountain lifting device 5 that does not store the load 1 and is closest to the top of the mountain; when the sliding mechanism is horizontally aligned with the top of the mountain lifting device 5, the load platform 20 of the top of the mountain lifting device 5 that does not store the load 1 in the designated row is controlled to rise, and when the bottom surface of its top platform is aligned with the top of the mountain lifting device 5, the load platform 20 of the top of the mountain lifting device 5 that does not store the load 1 is controlled to rise. When the base of the sliding mechanism is located at the same horizontal plane, the top-mountain lifting device 5 starts to carry the load 1, and stops lifting when the bottom of the positioning frame at the bottom of the load 1 is higher than the top of the sliding mechanism. At this time, the load 1 is completely placed on the top-mountain lifting device 5, and the sliding mechanism is separated from the load 1; then the generator motor 10 is turned off, and the sliding mechanism automatically descends to the bottom section of the slide rail 6 under the action of gravity, and then the rope 17 of the electric winch 18 is used to bring the sliding mechanism along the slide rail 6 to the bottom-mountain lifting device 4, and the next load 1 is transported from the bottom of the mountain to the top of the mountain according to the above process, and multiple loads 1 are arranged in order from high to low on the corresponding row of top-mountain lifting devices 5. The size and setting of the steel cables 3 and ropes 17 on the multiple slide rails 6 are the same, so that the movement of the load 1 on the multiple slide rails 6 can remain stable; a row of multiple bottom-mountain lifting devices 4 or a row of multiple top-mountain lifting devices 5 share a switch, so that the lifting, lowering and stopping of the top platforms of the lifting devices in a row can be kept synchronous.

When releasing energy during peak power periods, the generator motor 10 is first started to move the sliding mechanism to a row of mountain top lifting devices 5 at the top of the mountain where the load 1 is stored and which is farthest from the top of the mountain. Then the load platform 20 of this row is started to lower the load 1 onto the sliding mechanism. Then the power supply of the generator motor 10 is disconnected, and the load 1 and the sliding mechanism move downward synchronously under the action of gravity. Driven by the end of the steel cable 3, the conversion shaft 8 releases the wound part of the steel cable 3 and rotates in the opposite direction, and drives the rotor shaft of the generator motor 10 to rotate in the opposite direction through the gear box 12. Using the principle of "electromagnetic induction", the generator will output induced electromotive force, and current can be generated through a closed load circuit. After the current is converted by the inverter, the current is transmitted to the power consumption end through the conductive wire. When the sliding mechanism slides to the bottom section of the slide rail 6, the rope 17 of the electric winch 18 is used to bring the sliding mechanism along the slide rail 6 back to a row of bottom lifting devices 4 where no load 1 is stored and which is farthest from the top of the mountain. When the sliding mechanism is horizontally aligned with the row of bottom lifting devices 4, the load platform 20 of the bottom lifting device 4 is controlled to rise. When the bottom surface of its top platform is on the same horizontal plane as the base of the sliding mechanism, the bottom lifting device 4 starts to carry the load 1. When the bottom of the positioning frame at the bottom of the load 1 is higher than the top of the sliding mechanism, the lifting is stopped. At this time, the load 1 is completely placed on the bottom lifting device 4, and the sliding mechanism is separated from the load 1, and the load 1 stays in the outermost row of bottom lifting devices 4. Disconnect the connection between the rope 17 and the sliding mechanism, and then start the generator motor 10 again to move the sliding mechanism toward the top of the mountain to release the gravitational potential energy of the load 1 at the top row of the top mountain lifting device 5. Repeat this process until the gravitational potential energy of the load 1 at the top row of the top mountain lifting device 5 is released.

Compared with the related art, the gravity energy storage device based on retired wind turbine blades provided by the present invention has the following beneficial effects:

The present invention utilizes retired wind turbine blades as loads, which can reasonably handle retired old wind turbine blades, reduce renovation and recycling costs, protect the environment, make full use of the terrain of the mountain, and can also allow the load 1 to store and release energy during its activities on the mountain slope 103. The mountain gravity energy storage method is used to smooth the peaks and fill the valleys of wind power generation, which can supply power to wind power generation equipment in use and effectively solve the problem of wind abandonment. In addition, a flexible response can be made to the needs of the power grid. According to actual project needs, the number of rows of the mountain top lifting device 5 and the mountain bottom lifting device 4 can be increased, and the number of wind turbine blades serving as the load 1 can be correspondingly increased to increase the energy storage capacity.

The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims (10)

1. The gravity energy storage device based on the retired fan blade comprises a sliding rail (6) and a mountain body, wherein the mountain body comprises a mountain top plane (101) and a mountain bottom plane (102), and is characterized in that a sliding mechanism capable of moving along the sliding rail (6) is arranged on the sliding rail, the sliding mechanism comprises a sliding supporting surface (21), a sliding front baffle (22) and a sliding rear baffle (23) are fixedly connected to two sides of the top of the sliding supporting surface (21) respectively, the arrangement directions of the sliding front baffle (22) and the sliding rear baffle (23) are consistent with the laying direction of the sliding rail (6), a load (1) is arranged on the sliding supporting surface (21) and between the sliding front baffle (22) and the sliding rear baffle (23), and the load (1) is the retired fan blade;

the top of the mountain top plane is provided with a generator motor (10) and a gear box (12), the output end of the gear box (12) is fixedly provided with a coupler (11), the coupler (11) and a rotor shaft of the generator motor (10) are fixedly arranged, the input end of the gear box (12) is fixedly connected with a belt wheel (14), the top of the mountain top plane is provided with a rotatable conversion shaft (8), be provided with gear area (13) between conversion axle (8) and band pulley (14), fixedly connected with steel cable (3) on conversion axle (8), the one end that conversion axle (8) was kept away from to steel cable (3) is connected with slide preceding baffle (22) for drive slide preceding baffle (22) activity, make and slide supporting surface (21) and load thing (1) move along slide rail (6) direction jointly.

2. The gravity energy storage device based on retired fan blades according to claim 1, wherein a mountain slope (103) is arranged between the mountain top plane (101) and the mountain bottom plane (102), at least two groups of sliding rails (6) are arranged, the sliding rails (6) are paved on the mountain slope (103) and the mountain bottom plane (102) connected with the slope, the sliding rails (6) are arranged in parallel, and the interval between any two adjacent sliding rails (6) is equal.

3. The gravity energy storage device based on the retired fan blade according to claim 2, wherein a deceleration strip (16) is arranged on a sliding rail (6) at the joint of the mountain bottom plane (102) and the mountain inclined plane (103), and the deceleration strips (16) and the sliding rail (6) are arranged in a one-to-one correspondence.

4. A gravity energy storage device based on retired fan blades according to claim 3, wherein a front connecting lug (221) is fixedly connected to one side of the sliding front baffle (22), a rear connecting lug (231) is fixedly connected to one side of the sliding rear baffle (23), and one end of the steel cable (3) is fixedly connected with the front connecting lug (221) for driving the sliding mechanism to move towards the mountain top plane.

5. The gravity energy storage device based on retired fan blades according to claim 4, wherein an electric winch (18) is fixedly installed at the tail end of the sliding rail (6) on the mountain bottom plane (102), a rope (17) is fixedly connected to the electric winch (18), a J-shaped hook is arranged at one end, far away from the electric winch (18), of the rope (17), and the J-shaped hook is installed in the rear connecting lug (231) and used for pulling the sliding mechanism to move towards the electric winch (18).

6. The gravity energy storage device based on retired fan blades according to claim 5, wherein a plurality of rows of mountain top lifting devices (5) are fixedly installed at the top of the mountain inclined plane (103), a plurality of rows of mountain bottom lifting devices (4) are fixedly installed at the top of the mountain bottom plane (102), the mountain top lifting devices (5) and the mountain bottom lifting devices (4) are all arranged in a staggered mode with the sliding rail (6), bearing tables (20) are arranged on the mountain top lifting devices (5) and the mountain bottom lifting devices (4), and the bearing tables (20) are used for bearing the load (1).

7. The gravity energy storage device based on retired fan blades according to claim 6, wherein the two sides of the bearing table (20) are fixedly connected with positioning baffles (201), the bottom of the mountain bottom lifting device (4) is provided with a horizontal base (401), and the bottom of the mountain top lifting device (5) is provided with an inclined base (501).

8. The gravity energy storage device based on retired fan blades according to claim 7, wherein the bottom of the load (1) is fixedly connected with a plurality of supporting seats (26), and the bottom of the supporting seats (26) is fixedly connected with two limit baffles (27) which are obliquely arranged.

9. The gravity energy storage device based on retired fan blades according to claim 8, wherein a plurality of shaft brackets (9) are fixedly arranged at the top of the mountain top plane (101), and the conversion shaft (8) is rotatably connected with the shaft brackets (9).

10. The gravity energy storage device based on retired fan blades according to claim 9, characterized in that the top of mountain slope (103) and the one end that is located slide rail (6) are fixed mounting has stand (7), and the top of stand (7) is provided with pulley (15), and pulley (15) are used for providing the direction for the activity of steel cable (3).