Background technology
Wind-driven generator is the power equipment that the kinetic energy of wind is converted to electric energy.Wind energy belongs to clean energy resource, by wind energy
Natural environment is not polluted during being converted to electric energy, therefore, with stepping up for China's energy conservation and environmental protection requirement, wind-force
Power generation is more and more widely used, and especially in the north in China and high altitude localities, wind resource is compared with horn of plenty, wind-force
Power generation has obtained promotion and application energetically in these areas.
But wind-power electricity generation there is also it is apparent the shortcomings that, wherein, the most prominent is that wind speed is unstable, is being generated electricity
In the process, the electricity sent is unstable, it is necessary to be first first converted into direct current to the alternating current of unknown electricity, then direct current is converted into
It is connected to the grid after alternating current, it handling, it is necessary to rapidly be carried out to the electronic switch in rectifier quick to unknown alternating current
Turn on and off, to obtain stable DC, then the requirement to rectifier is high, expensive, quickly switching open
It closes, be easy to cause the damage of rectifier.And cannot obtain the direct current of standard can also produce the processes such as subsequent inversion, grid-connected
It is raw to influence.
It is well known that the average air quantity in evening is more than the air quantity on daytime, and the power consumption in evening is less than the electricity consumption on daytime
Amount.Therefore at night, wind-power electricity generation is in peak value, and power consumption is in valley;On daytime, wind-power electricity generation is in valley, and electricity consumption
In peak value.Therefore, for existing wind-power electricity generation phenomenon, it is necessary to a kind of conditioning unit is proposed, with same power grid power demand
Match, in electricity consumption peak value, export wind-power electricity generation electric energy, to eliminate existing reverse confession electrical phenomena.
The problem of being overturned for the wind-power electricity generation time, some wind generator systems use battery power storage.But accumulator
Usual efficiency for charge-discharge is low, and attenuation is fast, and service life is short, and storage electricity is small, and the storage to accumulator and adjusting requirement
It is extremely harsh, cause with high costs.Also, the processing environmental pollution of used and scrapped battery is larger.In addition, in wind-power electricity generation
Machine can generate thermal energy during generating electricity, these thermal energy are not recycled at present.Solving problem above becomes the task of top priority.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of storage wind generating energy-storage device.Wind-force is stored, is being needed
When wanting electricity consumption, release wind energy generates electricity.Generated energy can also be controlled, and the thermal energy to being generated in power generation process carries out
Real-time collecting, it is energy saving.
In order to achieve the above objectives, the specific technical solution that the utility model uses is as follows:
A kind of storage wind generating energy-storage device, including pylon and the wind wheel for being arranged on tower top, it is characterised in that:Described
Tower top is additionally provided with wind turbine cabin, is internally provided with helical-lobe compressor in the wind turbine cabin, the rotor shaft of the wind wheel penetrates wind
The inside of cabin simultaneously drives the helical-lobe compressor, and the helical-lobe compressor conveys compressed air to high-pressure gas device, described
The compressed air-driven turbo-expander of high-pressure gas device output, the turbo-expander drive rotor generator power generation, institute
State rotor generator electric energy output end and AC-DC conversion module ac input end connect, the AC-DC conversion module it is straight
Stream output terminal is connected with the direct-flow input end of DC-AC modular converters, and the ac output end transformer of the DC-AC modular converters connects
It connects, the transformer is connected with grid power transmission circuit.
Heat-energy recovering mechanism is further included, the heat-energy recovering mechanism generates for collecting and storing during helical-lobe compressor work
Thermal energy.
Further include controller, the controller respectively with the helical-lobe compressor, high-pressure gas device, rotor generator,
Turbo-expander, heat-energy recovering mechanism, AC-DC conversion module, DC-AC modular converters are connected with the transformer.
By the rotor shaft of wind wheel helical-lobe compressor is driven to work, the compressed air of helical-lobe compressor production is stored in height
It presses in caisson, when needing power generation, high-pressure gas device is to turbo-expander output squeezing air, and then turbo-expander
Rotor generator work is driven, realizes power generation;While helical-lobe compressor compressed air, more thermal energy can be released, is passed through
Thermal energy can be collected and stored to heat-energy recovering mechanism;The size and number of high-pressure gas device can be according to actual demand neatly
It increases or decreases, energy storage capacity is huge;The electric energy that rotor generator is sent can be exported smoothly, be stirred from wind speed size
It influences, and then rotor generator sends stable AC energy, after rectified device, inverter and transformer processing, is connected to the grid.
Since the air of high-pressure gas device output is relatively stable, then rotor generator can send stable electric energy, whole system pair
The requirement of commutation inversion is low, and overall structure is simple, compact, easy to maintain, and service life is long, of low cost, environment friendly and pollution-free.
Further, the high-pressure gas device includes the high pressure tank of N number of parallel connection, in N number of high pressure tank
Compressed air equipped at outlet port be respectively arranged with an air inlet electromagnetic valve, N number of high pressure tank compressed air export
A solenoid valve of supplying gas is respectively arranged at mouthful.
Using more than structure, the quantity of high pressure tank can be increased or decreased according to actual demand, and is storing gas
During body, realize air inlet electromagnetic valve to the high pressure tank entrance for storing gas is needed to carry out intelligent control;And it needs defeated
When going out compressed gas, N number of solenoid valve of supplying gas is opened successively, is carried out intelligence and is supplied gas.Air accumulator technology maturation, reliability is high, cost
It is cheap.Wherein N is the positive integer more than or equal to 0.
As preferred:Current sensor is connected on the power grid transmission line road;The current sensor and the control
The current detecting end connection of device processed, N number of solenoid valve supply gas solenoid valve control output N number of with the controller respectively of supplying gas
End connection;
The controller is supplied gas solenoid valve, turbine expansion described in being controlled according to the current value that the current sensor detects
Machine, rotor generator, AC-DC conversion module, DC-AC modular converters and transformer work.
By detecting power grid transmission line road electric current, to judge the electricity consumption situation of power grid, when power grid power consumption is big, control
Device can control turbo-expander, rotor generator, AC-DC conversion module, DC-AC modular converters and the transformer work in real time
Make, while the solenoid valve of supplying gas of high-pressure gas device compressed air delivery outlet is controlled to carry out power generation of supplying gas.
Preferably, N number of high pressure tank is connected to an air pressure probe, N number of air pressure
Force snesor is connected respectively with N number of pressure signal input end of the controller;N number of air inlet electromagnetic valve respectively with the control
N number of air inlet electromagnetic valve control output end connection of device processed.
Air pressure probe is detected the gas pressure in high pressure tank, is stored up in helical-lobe compressor to high pressure
During device of air is supplied gas, when the pressure of high pressure tank reaches maximum gas pressure, control air inlet electromagnetic valve is cut
It changes, helical-lobe compressor is made to convey compressed gas to next high pressure tank.In power generation process, when the gas in high pressure tank
When body pressure is too small, controller controls solenoid valve of supplying gas to switch over, and next high pressure tank is controlled to supply gas, is intelligently cut
It changes, improves the stability of generating reliability and generated energy.
As preferred:Air flow sensor is provided between the high-pressure gas device and the turbo-expander,
The air flow sensor is connected with the air flow rate signal output terminal of the controller;
Be provided with rotor speed sensor on the rotor of the rotor generator, the rotor speed sensor with it is described
The rotor speed signal input part connection of controller.
Using the above program, when the flow that air flow sensor detects is bigger, the rotor of theoretical rotor generator turns
Speed can with send variation, rotor generator rotor speed is detected in real time using rotor speed sensor, can rationally into
Row Generation Control, while the rationally compressed gas tolerance of control high-pressure gas device output.Improve generating efficiency and electricity generation system
Reliability.
As preferred:The heat-energy recovering mechanism includes heat storage tank, is set between the heat storage tank and the helical-lobe compressor
There is thermal energy collecting pipeline, in the thermal energy collecting pipeline there is recirculated water, variable frequency pump is installed in the thermal energy collecting pipeline;
Screw speed sensor, the screw speed input of the controller are installed on the screw rod of the helical-lobe compressor
End is connected with the screw speed sensor, and the flow control output terminal of the controller is connected with the variable frequency pump.
Using more than structure, by water pump cooling water can be made to realize Xun Huan in thermal energy collecting pipeline, recycle cooling
The thermal energy that generates when water quickly absorbs helical-lobe compressor work, and by thermal energy in heat storage tank quick release, cycled with this.And
Helical-lobe compressor screw speed value is detected by screw speed sensor, helical-lobe compressor can be reacted and sent during the work time
Heat, when the heat that helical-lobe compressor is sent is bigger, controller control variable frequency pump change running frequency, followed so as to change
The flow velocity of ring water realizes real-time heat acquisition and storage.
As preferred:The heat storage tank includes babinet, has in the babinet using inner core made of phase-change material, interior at this
Runner is offered on core, dismountable chamber door is equipped on the babinet, which is more than projection of the inner core on chamber door
Area.Using more than structure, phase-change material can quickly absorb the thermal energy in cooling water, and amount of stored heat is big, passes through chamber door
Design fetching and replacing for inner core of being more convenient for.
As preferred:The heat storage tank, which is removably mounted on, pulls on wooden handcart, this is pulled wooden handcart and can be dragged by trailer.
Using more than structure, the place that heat storage tank transports needs is enable to discharge heat again, substantially increases flexibility and practicability.
As preferred:The wind turbine cabin includes being fixed on the engine base of pylon upper end and lid closes the outer housing on engine base, institute
It states engine base and outer housing surrounds to form accommodating space, the helical-lobe compressor, rotor generator and turbo-expander are respectively positioned on appearance
In emptying.It is reliable and stable using more than structure, maintenance easy to maintain.
As preferred:N number of high pressure tank or by the pylon
N number of high pressure tank is disposed side by side in the mounting bracket by pylon;
N number of high pressure tank or the inside for being installed in pylon.
High pressure tank is mounted on by the pylon, convenient for increasing or decreasing the quantity of high pressure tank or replacing big small-sized
Number, a large amount of compressed airs can be stored, meet compressed air physical holding of the stock demand, flexibility is high.
High pressure tank is disposed side by side in the mounting bracket by pylon, convenient for the placement of high pressure tank, stores up high pressure
Gas tank is put neatly, efficiently utilizes place space.
The integrated design of the wind engine room inside, which is arranged side by side, in high pressure tank makes overall appearance compacter, also,
Pylon inner space is larger, can install the high-pressure gas device of larger model, to store more compressed airs.
The beneficial effects of the utility model:The kinetic energy of wind is subjected to air compression, when needing power generation, is sent out in real time
Electricity, when solving electricity consumption peak value, power grid can not meet the situation of power supply;And it is generated electricity, generated electricity using the gas gathered
Amount is stablized, and it is low to cross range request to the commutation inversion of electric energy.And system carries out the thermal energy generated during compressed gas real-time
Recycling, it is energy saving.Entire gas compression and the system structure of gas discharge are simple, compact, and easy to maintain, service life is long,
It is of low cost, it is environment friendly and pollution-free.
Specific embodiment
Specific embodiment of the present utility model and operation principle are described in further detail below in conjunction with the accompanying drawings.
With reference to Fig. 1 as can be seen that a kind of store up wind generating energy-storage device, including pylon 1 and the wind wheel being arranged at the top of pylon 1
3, wind turbine cabin 2 is additionally provided at 1 top of pylon, helical-lobe compressor 4 is internally provided in the wind turbine cabin 2, the wind wheel 3
Rotor shaft 31 penetrates the inside in wind turbine cabin 2 and drives the helical-lobe compressor 4, and the helical-lobe compressor 4 is to high-pressure gas device 5
Convey compressed air, the compressed air-driven turbo-expander 7 that the high-pressure gas device 5 exports, 7 band of turbo-expander
Dynamic rotor generator 6 generates electricity, and the electric energy output end of the rotor generator 6 connects with the ac input end of AC-DC conversion module 13
It connects, the DC output end of the AC-DC conversion module 13 is connected with the direct-flow input end of DC-AC modular converters 9, the DC-AC
The ac output end transformer 12 of modular converter 9 connects, and the transformer 12 is connected with grid power transmission circuit.
With reference to Fig. 1 it can also be seen that further including heat-energy recovering mechanism 8, the heat-energy recovering mechanism 8 is used to collect and store
The thermal energy that helical-lobe compressor 4 generates when working;
With reference to Fig. 5 it can also be seen that further including controller 10, the controller 10 respectively with the helical-lobe compressor 4, high
Press caisson 5, rotor generator 6, turbo-expander 7, heat-energy recovering mechanism 8, AC-DC conversion module 13, DC-AC moduluss of conversion
Block 9 and the transformer 12 connect.
In the present embodiment, the high-pressure gas device 5 includes the high pressure tank 51 of N number of parallel connection, in N number of high pressure
The compressed air equipped at outlet port of air accumulator 51 is respectively arranged with an air inlet electromagnetic valve, in the pressure of N number of high pressure tank 51
A solenoid valve of supplying gas is respectively arranged at contracting air-out.
In the present embodiment, N=3.
With reference to Fig. 5 as can be seen that being connected with current sensor 11 on the power grid transmission line road;The current sensor
11 be connected with the current detecting end of the controller 10, and solenoid valve of supplying gas described in 3 is supplied gas respectively with the controller 103
Solenoid valve control output terminal connects.
With reference to Fig. 5 as can be seen that the current value that is detected according to the current sensor 11 of the controller 10 is to control
State solenoid valve of supplying gas, turbo-expander 7, rotor generator 6, AC-DC conversion module 13, DC-AC modular converters 9 and the transformation
Device 12 works.
With reference to Fig. 5 it can also be seen that 3 high pressure tanks 51 are connected to an air pressure probe 54,3
A air pressure probe 54 is connected respectively with 3 pressure signal input ends of the controller 10.
With reference to Fig. 5 it can also be seen that 3 air inlet electromagnetic valves, 3 air inlet electromagnetic valves with the controller 10 respectively
Control output end connects.
With reference to Fig. 5 it can also be seen that being provided with air between the high-pressure gas device 5 and the turbo-expander 7
Flow sensor 71, the air flow sensor 71 are connected with the air flow rate signal output terminal of the controller 10;Institute
It states and rotor speed sensor 61 is provided on the rotor of rotor generator 6, the rotor speed sensor 61 and the controller
10 rotor speed signal input part connection.
Referring to Fig. 2-4, the heat-energy recovering mechanism 8 includes heat storage tank 81, the heat storage tank 81 and the helical-lobe compressor 4 it
Between be provided with thermal energy collecting pipeline 82, there is in the thermal energy collecting pipeline 82 recirculated water, pacify in the thermal energy collecting pipeline 82
Equipped with variable frequency pump 83;
Screw speed sensor 41 is installed on the screw rod of the helical-lobe compressor 4, the screw rod of the controller 10 turns
Fast input terminal is connected with the screw speed sensor 41, flow control output terminal and the variable frequency pump of the controller 10
83 connections.
Referring to Fig. 4, the heat storage tank 81 includes babinet 811, has in the babinet 811 using inner core made of phase-change material
812, runner 813 is offered on the inner core 812, dismountable chamber door 814 is equipped on the babinet 811, the chamber door 814 is big
It is small to be more than projected area of the inner core 812 on chamber door 814.
As a preferred embodiment, the heat storage tank 81, which is removably mounted on, pulls on wooden handcart 84, this pulls wooden handcart 84
It can be dragged by trailer 85.
Figure it is seen that the wind turbine cabin 2 includes being fixed on the engine base 21 of 1 upper end of pylon and lid is closed on engine base 21
Outer housing 22, the engine base 21 and outer housing 22 surround to form accommodating space, the helical-lobe compressor 4,6 and of rotor generator
Turbo-expander 7 is respectively positioned in accommodating space.
As a kind of embodiment, 3 high pressure tanks 51 or by the pylon 1
As another embodiment, 3 high pressure tanks 51 or the mounting bracket for being disposed side by side on 1 side of pylon
On 52;
As another embodiment, 3 high pressure tanks 51 or the inside for being installed in pylon 1.
It should be pointed out that the above description is not intended to limit the present invention, the utility model is also not limited to
The example above, what those skilled in the art were made in the essential scope of the utility model changes, is modified, adding
Add or replace, should also belong to the protection scope of the utility model.