WO2014023209A1

WO2014023209A1 - Environment-friendly elastic energy storage power station

Info

Publication number: WO2014023209A1
Application number: PCT/CN2013/080818
Authority: WO
Inventors: 杨长易; 杨利栋
Original assignee: Yang Changyi
Priority date: 2012-08-08
Filing date: 2013-08-05
Publication date: 2014-02-13
Also published as: CN102842987B; CN102842987A

Abstract

An environment-friendly elastic energy storage power station comprises a reversible engine power generating unit (1). An output shaft of the reversible engine power generating unit (1) is connected to an input shaft of a speed-adjusting transmission (2), two ends of an output shaft of the speed-adjusting transmission (2) are respectively connected to an energy storage mainshaft (3), and the energy storage mainshaft (3) is provided with an elastic energy storage device and a braking controller device (12, 13) for controlling the energy storage mainshafts (3) to rotate. The elastic energy storage power station can realize an energy storage effect of physically storing electric energy and releasing elastic energy for power generation by using a spring, realize the complementary coordination of congenital defects, such as intermittence, fluctuation and randomness of new energy sources, such as wind power and photovoltaic power generation, improve the electric energy quality, enhance the acceptability of a power grid to power generation of new energy sources, and can be applied to the existing power grid system to be used as a peaking power source, so that the complementary coordination of the electric energy of the power grid at the peak period and the electric energy of the power grid at the valley period is realized.

Description

Environmentally friendly flexible energy storage power station

Technical field

The invention belongs to the field of new energy technology, and particularly relates to an environment-friendly elastic energy storage power station which can be matched with a new energy grid.

Background technique

With the rapid development of new energy sources, more and more intermittent power sources such as wind power generation and solar power generation are connected to the power system, which has an impact on the safe and stable operation of the power grid. At present, grid-connected power has become a constraint to the sustainable development of the new energy industry. bottleneck. How to solve the problem of intermittent, volatility and random power supply of new energy sources such as wind power and solar power generation, energy storage technology is the only effective solution. The energy storage technologies currently being used mainly include shaft water storage and battery storage. The shaft water storage technology is relatively mature, but it has the disadvantages of being affected by geographical topographic conditions and slow response speed. The storage energy of the battery cannot meet the requirements of grid energy storage due to environmental and economic disadvantages. Faced with the continuous increase of grid load, the increasing proportion of new energy, and the lack of peaking methods, smart grids are in dire need of a variety of energy storage technologies. In order to solve the new energy development and the urgent need of the power grid, it is necessary to develop new energy storage technologies to make up for the serious shortage of existing energy storage technologies.

Summary of the invention

The technical problem solved by the invention provides an environment-friendly elastic energy storage power station, which realizes the physical storage of electric energy and the energy storage effect of releasing elastic energy power generation by utilizing the elastic principle of spring repetitive bending and extension, and the new energy sources such as wind power and photovoltaic power generation. Congenital defects such as intermittent, volatility and randomness achieve mutual Coordination, improve power quality, enhance the grid's ability to accept new energy power generation, can also be applied to the existing power grid system as a peaking power supply, so that the grid's peak energy and low-peak energy can complement and coordinate, thus ensuring the grid Safe and smooth operation.

The technical solution adopted by the invention is: an environmentally-friendly elastic energy storage power station, comprising a reversible motor generator set, wherein an output shaft of the reversible motor generator set is connected with an input shaft of a variable speed transmission, and two ends of the output shaft of the speed control transmission Both are connected to the energy storage main shaft, and the energy storage main shaft is provided with an elastic energy storage device and a brake controller device for controlling the rotation of the energy storage main shaft.

Preferably, the elastic energy storage device is composed of a coil spring and a coil spring cover, the inner end of the coil spring is fixedly connected with the energy storage main shaft, and the outer end of the coil spring is fixedly connected with the inner wall surface of the coil spring cover. The coil spring cover is fixed on the foundation ground, and the energy storage main shaft is supported by the bearing spring cover through the bearing.

Preferably, the elastic energy storage device is composed of a gear, two racks, a pair of compression spring assemblies and a compression spring frame, the gears are fixed on the energy storage main shaft, and the compression spring frame is fixed on the foundation ground. The pair of compression spring assemblies are disposed on both sides of the energy storage main shaft, one outer end of the compression spring assembly is fixed on the inner surface end of the compression spring frame, and the outer end of the other compression spring assembly is fixed on the lower end surface of the inner wall surface of the compression spring frame, two The inner ends of the compression spring assembly are fixedly connected to one ends of the two racks respectively, and the other ends of the two racks are vacant, and the two racks are located on both sides of the gear and mesh with the gears.

Further, the compression spring assembly is composed of a compression spring and a curved leaf spring, one end of the compression spring is fixedly connected with the upper end surface of the inner wall of the compression spring frame, and the other end of the compression spring is fixedly connected with the curved leaf spring, the tooth One end of the strip is fixedly connected to the highest end of the curved leaf spring, and the other end of the rack is suspended.

Further, the compression spring assembly body is provided with six compression springs, and the outer end of the compression spring is fixedly connected with the inner wall surface of the compression spring frame, and the inner end of the compression spring is fixedly connected with the horizontal partition plate, and one end of the curved leaf spring is The diaphragm is fixedly connected, and the other end of the curved leaf spring is movably connected to the diaphragm.

Further, the brake controller device includes a brake disc and a brake shoe, and the brake disc is fixed On the energy storage spindle, the brake shoe is fixed in the coil spring housing or the compression spring frame and can clamp the brake disk. Advantages of the present invention over the prior art:

1. Pinggu peaking response speed is fast, easy to use and safe;

2, the capacity can be large or small, no terrain conditions;

3. High energy storage efficiency and improved power quality;

4. No environmental pollution or zero emission operation;

5. Low manufacturing cost, good economy, convenient maintenance, economical and practical;

6. Ensure the safety of new energy grid connection and power grid operation. DRAWINGS

1 is a schematic structural view of a first embodiment of the present invention;

2 is a schematic structural view of a coil spring according to a first embodiment of the present invention;

3 is a schematic structural view of a coil spring cover according to a first embodiment of the present invention;

4 is a schematic structural view of a second embodiment of the present invention;

Figure 5 is a schematic structural view of a compression spring assembly according to a second embodiment of the present invention;

Figure 6 is a schematic view showing the arrangement position of the compression springs according to the second embodiment of the present invention. detailed description

An embodiment of the present invention is described below with reference to Figures 1-3.

The environmentally-friendly elastic energy storage power station comprises a reversible motor generator set 1. The output shaft of the reversible motor generator set 1 is connected to the input shaft of the variable speed transmission 2 via a coupling, and the output shaft of the variable speed transmission 2 is The ends are connected to the energy storage main shaft 3 through a coupling, and the energy storage main shaft 3 is provided with an elastic energy storage device and a brake controller device for controlling the rotation of the energy storage main shaft 3. Elastic energy storage The device is composed of a coil spring 4 and a coil spring cover 5, the inner end 14 of the coil spring 4 is fixedly connected to the energy storage main shaft 3, and the outer end 15 of the coil spring 4 is fixedly connected to the inner wall surface of the coil spring housing 5. The coil spring housing 5 is fixed on the foundation floor, and the energy storage spindle 3 is supported by the coil spring housing 5 through the bearing 16. The brake controller device includes a brake disc 12 and a brake shoe 13 fixed to the energy storage spindle 3, and the brake shoe 13 is fixed in the coil spring housing 5 and can be made The movable plate 12 is clamped.

The reversible motor generator set 1 is a two-purpose motor unit that can rotate in both directions. Its function is to use electric energy when rotating clockwise, and to generate electric energy for the motor when it rotates in the reverse counterclockwise direction. It is the main component of electrical energy storage and power generation in the technology of the present invention. The function of the variable speed transmission 2 is to adjust the torque and speed of the reversible motor generator set 1 during energy storage and power generation. The inner end 14 of the coil spring 4 is fixedly connected to the energy storage main shaft 3, and the outer end 15 is connected to the outer casing of the coil spring casing 5, and its function is to store electrical energy and release elastic energy to generate electricity, which is a key component of the present technology. . The lower end of the coil spring casing 5 is fixed to the foundation by anchor bolts, and the inner wall surface of the coil spring casing 5 is connected to the outer end 15 of the coil spring 4, and functions as both a basic component of the energy storage power station and a basic component. The coil spring 4 stores electrical energy and releases a support point for generating elastic energy. The brake controller device is composed of a brake disc 12 and a brake shoe 13, and the brake disc 12 is mounted on the energy storage main shaft 3, placed in the coil spring housing 5, on the inner side of the coil spring 4, and the brake shoe 13 is The semicircular shape has a rear end connected to the inner wall surface of the coil spring cover 5, and the front end can sandwich the brake disc 12 in the middle, and its function is to perform a functional replacement of the coil spring 4 for storing electric energy and releasing elastic energy power generation by utilizing its braking action.

Energy storage: During energy storage, electric energy enters the reversible motor generator set 1 through the wire. At this time, the reversible motor generator set 1 rotates clockwise, that is, it rotates, and its function is the motor. The electric power driven reversible motor generator set 1 rotates clockwise, and the rotating energy thereof is reduced by the speed change transmission 2 to reduce the rotational speed, and the torque is increased. The increased torque is transmitted to the coil spring 4 through the energy storage main shaft 3, and the coil spring 4 is wound. Pressure storage energy. After the energy storage capacity is completed, the brake shoe 13 brakes the brake disk 12 to maintain Energy storage effect.

Power generation: When generating electricity, the brake shoes 13 are released from braking, and the elastic energy stored in the coil spring 4 during the winding process begins to be released. The center end of the coil spring is twisted with a strong torque to reverse the energy storage spindle 3, which is reversed. After the variable speed transmission 2 is shifted, the reversible motor generator set 1 is reversed counterclockwise. At this time, the rotation direction of the reversible motor generator set 1 is reversed counterclockwise, and its function becomes a generator, and the electric energy is transmitted into the electric grid.

A second embodiment of the present invention will now be described with reference to Figures 4-6.

The environmentally-friendly elastic energy storage power station comprises a reversible motor generator set 1. The output shaft of the reversible motor generator set 1 is connected to the input shaft of the variable speed transmission 2 via a coupling, and the output shaft of the variable speed transmission 2 is The ends are connected to the energy storage main shaft 3 through a coupling, and the energy storage main shaft 3 is provided with an elastic energy storage device and a brake controller device for controlling the rotation of the energy storage main shaft 3. The elastic energy storage device is composed of a gear 6, two racks 7, a pair of compression spring assemblies 8 and a compression spring frame 9, which is fixed on the energy storage main shaft 3, and the compression spring frame 9 is fixed at On the foundation floor, the pair of compression spring assemblies 8 are disposed on both sides of the energy storage main shaft 3, and the outer end of one compression spring assembly 8 is fixed on the inner surface end of the compression spring frame 9, and the outer end of the other compression spring assembly 8 is provided. Fixed at the lower end of the inner wall surface of the compression spring frame 9, the inner ends of the two compression spring assemblies 8 are fixedly connected to the two ends of the two racks, the other ends of the two racks 7 are vacant, and the two racks 7 are located at the gear 6 Both sides mesh with the gear 6. The compression spring assembly 8 is composed of a compression spring 10 and a curved leaf spring 11 . The compression spring 10 end is fixedly connected to the upper end surface of the inner wall of the compression spring frame 9 , and the other end of the compression spring 10 is fixedly connected with the curved leaf spring 11 . The end of the rack 7 is fixedly connected to the highest end of the curved leaf spring 11, and the other end of the rack 7 is suspended. Specifically, the compression spring assembly 8 is provided with six compression springs 10, and the outer end of the compression spring 10 is fixedly connected to the inner wall surface of the compression spring frame 9, and the inner end of the compression spring 10 is fixedly connected with the horizontal partition. One end of the leaf spring 11 is fixedly connected to the horizontal partition plate, and the other end of the curved leaf spring 11 is movably connected to the horizontal partition plate, and there is room for expansion and contraction when the curved leaf spring 11 is compressed. The brake controller device comprises a brake disc 12 and a brake shoe 13 fixed to the energy storage spindle 3, the brake shoe 13 being fixed to the coil spring housing 5 or the compression spring frame 9 The brake disc 12 can be clamped and braked. The above-mentioned compression spring assembly 8 is optimally combined by two springs of a curved leaf spring 11 and a spiral compression spring 10, the purpose of which is to increase the energy storage power, the function of which is to store electric energy and release elastic energy to generate electricity, which is the technology of the present invention. The key core components. The bottom of the compression spring frame 9 is a foundation foundation, and the top is a top layer foundation. The bottoms of the four sets of coil springs are respectively fixed on the respective base surfaces, and the compression spring frame 9 can also be disposed in the left and right direction, that is, the bottoms of the coil springs are respectively fixed to the compression spring frame 9 On the left and right base surfaces, its function is to serve as the basic component of the energy storage power station, and it is the support point for the compression spring assembly 8 to store electrical energy and release elastic energy to generate electricity. The brake disc 12 is mounted on the energy storage main shaft 3, and the rear end of the brake shoe 13 is fixed to the inner wall surface of the compression spring frame 9 by a support frame, and the front end sandwiches the brake disc 13 therebetween. The gear 6 is a cylindrical spur gear, and the rack 7 is a spur rack. The bottom ends of the two spur racks 7 are respectively in contact with the pressure receiving point (the highest end) of the middle of the curved leaf spring 11 , and the rack 7 is The tooth surface is meshed with the cylindrical spur gear 6 in the middle, and the spline groove of the inner ring of the cylindrical spur gear 6 cooperates with the spline shaft head of the end of the energy storage spindle 3, and meshes with the two right and left spur racks 7 The function of the gear 6 and the rack 7 is to transmit the energy transmitted from the energy storage main shaft 3 to the compression spring assembly 8 of the terminal, and vice versa, to transmit the elastic energy released by the compression spring assembly 8 to the energy storage main shaft 3 to implement energy. Two-way delivery.

Energy storage: During energy storage, electric energy enters the reversible motor generator set 1 through the wire. At this time, the rotation direction of the reversible motor generator set 1 is clockwise, which is smooth, and its function is electric motor, electric energy drives the reversible motor generator set 1 Rotating clockwise, the rotating energy is reduced by the speed control transmission 2, the rotational speed is decreased, the torque is increased, and the increased torque is transmitted to the compression spring assembly 8 through the gear 6 and the rack 7 at both ends of the energy storage main pump 3, The compression spring assembly 8 performs compression energy storage. After the energy storage capacity is completed, the brake shoes 13 are braked to maintain the energy storage effect.

Power generation: When generating electricity, the brake shoes 13 are released from braking, and the compression spring assembly 8 is stored during compression. The elastic energy begins to release, and the compression spring assembly 8 passes the gear 6 and the rack 7 with a strong elastic force, and the energy storage spindle 3 is reversed, and the reversed energy is driven by the speed control transmission 2 to push the reversible motor generator set. 1 Counterclockwise reversal, at this time, the rotation direction of the reversible motor generator set 1 is reversed counterclockwise, and its function becomes a generator, and electric energy is emitted into the power grid.

The scientific principle according to the technical solution of the present invention is that the physical storage of electric energy and the energy storage effect of releasing elastic energy power generation are realized by utilizing the principle of elastic material which can be repeatedly flexed and extended by spring, and is a new energy storage scheme.

Analysis of the economic and social benefits of the invention in new energy generation, energy storage and grid connection:

1. As a spare capacity for new energy generation such as wind power and solar energy. Wind power generation and solar power generation are the new energy sources of human consensus. Their advantages are unrelenting, inexhaustible, large-scale, non-polluting, and non-emission. It is the main direction for human beings to obtain energy from nature in the future. However, its unique congenital defects such as intermittent, volatility and randomness are the main bottlenecks for human development and utilization of new energy sources. Flexible energy storage provides technical support for effectively cracking this bottleneck. When wind power and solar power generation have large fluctuations in power generation capacity due to weather and climate change, the elastic energy storage power station stores electric energy exceeding the rated capacity when the new energy power generation exceeds the rated capacity. When the new energy power generation is lower than the rated capacity, the elastic energy storage energy The power station releases the stored energy to make up for the insufficient capacity of new energy generation. The role of this reserve capacity is: Effective storage and replenishment of new energy generation capacity, improvement of new energy generation quality, equalization of new energy generation and grid integration, and increase of economic benefits of new energy generation.

2. As the main peaking power supply for the grid system. The electricity consumption of the grid users is divided into peak section, valley section and flat section. From 12 o'clock to 6 o'clock in the evening, it is the low-power period. At this time, the power of the grid is not used up, and the remaining power is wasted. It is called garbage power. . At this point, the elastic energy storage station stores this part of the remaining power. At noon and evening, during the peak hours of power consumption, the power of the power grid is not enough. At this time, the elastic energy storage power station releases the energy stored in the low valley and supplements the power of the power grid. Flexible storage The power station can store the grid in different power consumption periods, and the peak time release, that is, the technical measures of shifting peaks and valleys, is used as the peaking power supply of the power grid, complementing and coordinating the grid capacity, and enhancing the economic benefits of the grid.

3. Analysis of economic benefits: Take the peak and valley electricity price of Beijing Power Grid as an example: the electricity price of Beijing Power Grid is 0. 35 yuan / kWh during peak hours, and the peak price is 1. 20 yuan / kWh. Calculated with a capacity of 10,000 kilowatts for an energy storage power station, it can store 60000 kWh from 12 to 6 pm every night. By the time of noon and evening power consumption, the stored 60,000 kilowatts of electricity will be released, and 10% of the friction and energy storage loss will be removed. The power supply can be supplemented with 54,000 kWh of electricity. The economic benefit is: 54000 kWh X 0. 80 yuan =43200 yuan / day, that is, a day can create a value of 43,200 yuan. China's power grid has a low residual capacity of 30%. If these surplus electricity is used in energy storage, it can generate hundreds of billions of yuan in economic value every year, and its economic and social benefits will be enormous.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and all equivalent changes made by the claims of the present invention should be included in the scope of the claims of the present invention. .

Claims

claims

1. An environmentally friendly elastic energy storage power station, including a reversible motor generator set (1), characterized in that: the output shaft of the reversible motor generator set (1) is connected to the input shaft of the speed control transmission (2), Both ends of the output shaft of the speed transmission (2) are connected to the energy storage main shaft (3), and the energy storage main shaft (3)

(3) are equipped with an elastic energy storage device and a brake controller device that controls the rotation of the energy storage spindle (3).

2. The environmentally friendly elastic energy storage power station according to claim 1, characterized in that: the elastic energy storage device is composed of a coil spring (4) and a coil spring cover (5), and the coil spring (4) The inner end (14) is fixedly connected to the energy storage spindle (3), and the outer end (15) of the coil spring (4) is fixedly connected to the inner wall of the coil spring cover (5). The coil spring cover (5) ) is fixed on the basic ground, and the energy storage spindle (3) is supported in the coil spring cover (5) through the bearing (16).

3. The environmentally friendly elastic energy storage power station according to claim 1, characterized in that: the elastic energy storage device consists of a gear (6), two racks (7), a pair of compression spring assemblies (8) and Composed of a compression spring frame (9), the gear (6) is fixed on the energy storage main shaft (3), the compression spring frame (9) is fixed on the basic ground, and the pair of compression spring assembly (8) Set on both sides of the energy storage spindle (3), the outer end of one compression spring assembly (8) is fixed on the upper end of the inner wall surface of the compression spring frame (9), and the outer end of the other compression spring assembly (8) is fixed on the compression spring frame (9). 9) At the lower end of the inner wall, the inner ends of the two compression spring assemblies (8) are fixedly connected to one end of the two racks (7), and the other ends of the two racks (7) are empty, and the two racks (7) ) are located on both sides of the gear (6) and mesh with the gear (6).

4. The environmentally friendly elastic energy storage power station according to claim 3, characterized in that: the compression spring assembly (8) is composed of a compression spring (10) and an arc-shaped leaf spring (11), and the compression spring (11) 10) One end is fixedly connected to the upper end surface of the inner wall of the compression spring frame (9), the other end of the compression spring (10) is fixedly connected to the arc leaf spring (11), and one end of the rack (7) is connected to the arc leaf spring (10). 11) top fixed connection, rack (7) The other end is left hanging.

5. The environmentally friendly elastic energy storage power station according to claim 4, characterized in that: the compression spring assembly (8) is provided with six compression springs (10), and the outer end of the compression spring (10) and the compression spring The inner wall of the frame (9) is fixedly connected, the inner end of the compression spring (10) is fixedly connected to the diaphragm, one end of the arc-shaped leaf spring (11) is fixedly connected to the diaphragm, and the other end of the arc-shaped leaf spring (11) is fixedly connected to the diaphragm. Movable connection of diaphragm.

6. The environmentally friendly elastic energy storage power station according to claim 2 or 3 or 4 or 5, characterized in that: the brake controller device includes a brake disc (12) and a brake shoe (13), The brake disc (12) is fixed on the energy storage spindle (3), and the brake shoe (13) is fixed in the coil spring cover (5) or compression spring frame (9) and can hold the brake disc (12) Clamp.