CN108661863A - A kind of multistage hydraulic type wind power generating set - Google Patents
A kind of multistage hydraulic type wind power generating set Download PDFInfo
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- CN108661863A CN108661863A CN201810649273.7A CN201810649273A CN108661863A CN 108661863 A CN108661863 A CN 108661863A CN 201810649273 A CN201810649273 A CN 201810649273A CN 108661863 A CN108661863 A CN 108661863A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D15/00—Transmission of mechanical power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/12—Combinations of two or more pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20538—Type of pump constant capacity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20576—Systems with pumps with multiple pumps
- F15B2211/20584—Combinations of pumps with high and low capacity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Power Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention belongs to technical field of wind power generation, and in particular to a kind of multistage hydraulic type wind power generating set.When in order to solve to carry out wind-power electricity generation using hydraulic wind power generating set, there is a problem of that wind energy utilization is low low with power generation quality, the invention discloses a kind of multistage hydraulic type wind power generating sets.The wind power generating set, including multistage hydraulic pumping system and multistage hydraulic motor electricity generation system, multistage hydraulic pumping system is made of multiple coaxial are installed in series with the pump group of the different displacements of oil circuit parallel connection, multistage hydraulic motor electricity generation system by multiple and different energy storage pressure accumulator and multiple and different generated outputs generating set at.Multistage hydraulic type wind power generating set using the present invention generates electricity, hydraulic slip that not only can be in reduction system, improve the transfer efficiency to wind energy to the utilization rate of wind energy and system, and the generator for most adapting to power can be selected to carry out generating operation, improve the generating efficiency and quality of entire generating set.
Description
Technical field
The invention belongs to technical field of wind power generation, and in particular to a kind of multistage hydraulic type wind power generating set.
Background technology
With the exhaustion of world's traditional energy in recent years, novel energy climbs up energy stage one after another.Wind-power electricity generation is considerable
Development is made that due contribution for the exhaustion of world energy sources and environmental crisis.Therefore, novel hydraulic wind power generating set equipment
Unprecedented concern has been obtained, and has had begun to test all over the world or come into operation, it will has gradually replaced traditional machine
The gear-driven generating set of tool.
Currently, in most of hydraulic wind power generating sets, it can design and liquid is converted wind energy into using variable pump conduct
The element of pressure energy, at this time theoretically can be by adjusting the discharge capacity of variable pump, to control the flow and pressure of output fluid.So
And since the rotating speed of variable pump is higher generally at hundreds of thousands of turns, and the rotating speed of impeller is unable to reach up to a hundred turns general at all
There are more than ten, 20 to turn left the right side, therefore actually variable pump is difficult to be matched with the rotating speed of impeller, if can be made using variable pump
At the failure damage in the variable pump inner body short time, to cannot keep the continual and steady output fluid of variable pump, and
Due to fluctuation, randomness and intermittence existing for wind energy itself so that the energy that wind wheel absorbs also have apparent fluctuation,
Randomness and intermittence, and then keep the rotating speed of variable pump further unstable, make output fluid pressure and instability of flow and
It is uncontrollable.In this way, can not only increase the energy loss of fluid flow process in system pipeline, especially in big flow low-pressure
In the state of fluid energy loss it is even more serious, to reduce the utilization rate to wind energy, and driven by unstable hydraulic energy
When hydrodynamic pressure motor carries out the driving power generation of generator, it can not ensure matching for hydraulic energy and generator power, and then cause
The reduction for the quality that generates electricity.
Invention content
When in order to solve to carry out wind-power electricity generation using hydraulic wind power generating set, due to the fluctuation of wind energy, randomness
There are wind energy utilization and whole system efficiency are low and the inferior problem of power generation, the present invention propose one kind with intermittence
Multistage hydraulic type wind power generating set.The wind power generating set, including hydraulic pump system, hydraulic motor electricity generation system, high pressure oil
Road and low pressure oil way；Wherein,
The hydraulic pump system includes the pump group of impeller, pump shaft and at least two different displacements；The pump group includes one
A constant displacement pump, one outlet check valve and a short valve, wherein the Outlet check valves are located at the constant displacement pump and the height
Between pressure oil road, controls the constant displacement pump and unidirectionally export in fluid to the high-pressure oil passage, the short valve and the constant displacement pump
Parallel connection, and one end of the short valve is located between the outlet end and the Outlet check valves of the constant displacement pump, and the other end is logical
The low pressure oil way is crossed to be connected to the input end of the constant displacement pump；At least two pump group is connected in parallel on the high-pressure oil passage and institute
Between stating low pressure oil way, and one end of the pump shaft is connect with the impeller, and the other end is by least two different displacements
Pump group in the constant displacement pump be sequentially connected in series；
The hydraulic motor electricity generation system, including hydraulic motor, generator, accumulator and accumulation of energy check valve；The hydraulic pressure
The input end of motor is connect with the high-pressure oil passage, and the outlet end of the hydraulic motor is connect with the low pressure oil way；The liquid
Pressure motor is connect with the generator coaxle；The accumulator and the accumulation of energy check valve are located on the high-pressure oil passage simultaneously,
And the accumulator is closer to the hydraulic motor, the fluid of the accumulator output all flow to the hydraulic motor into
Mouth end.
Preferably, further include a safety valve in the hydraulic pump system, the safety valve be located at the high-pressure oil passage with
Between the low pressure oil way.
Preferably, which further includes oil-supplementing system and fuel tank；The oil-supplementing system includes slippage pump and benefit
Oil-overflow valve, the oil inlet end of the slippage pump are connected to the fuel tank, oil outlet end and the low pressure oil of the slippage pump
Road is connected to, and the oil inlet end of the repairing overflow valve is located at the oil outlet end of the slippage pump, the repairing overflow valve it is fuel-displaced
Mouth end is connected to the fuel tank.
It is further preferred that further including an oil return overflow valve in the hydraulic pump system, the oil return overflow valve is located at
Between the low pressure oil way and the fuel tank.
Preferably, the short valve uses 2/2-way solenoid directional control valve.
Preferably, which includes at least two hydraulic motor electricity generation systems being connected in parallel with each other,
And further include first shut-off valve in each described hydraulic motor electricity generation system；First shut-off valve is located at described
In high-pressure oil passage, and positioned at the upstream position of the accumulation of energy check valve.
It is further preferred that the energy-storage pressure of the accumulator in each described hydraulic motor electricity generation system is different.
It is further preferred that the generated output of the generator in each described hydraulic motor electricity generation system is different.
It is further preferred that further include in each described hydraulic motor electricity generation system second shut-off valve, one
Three shut-off valves and the 4th shut-off valve；In each described hydraulic motor electricity generation system, second shut-off valve and described
Third shut-off valve is sequentially located between the accumulator and the hydraulic motor, and one end of the 4th shut-off valve is located at institute
It states between the second shut-off valve and the third shut-off valve；The other end of all 4th shut-off valves is interconnected.
It is further preferred that first shut-off valve, second shut-off valve, the third shut-off valve and 4th section described
Only valve is all made of 2/2-way solenoid directional control valve.
When the multistage hydraulic type wind power generating set of the present invention carries out wind-power electricity generation, have the advantages that：
1, in the hydraulic pump system of the present invention, it is provided with the pump group of multiple parallel connections, wherein determining all discharge capacities are different
Work is driven by wind wheel in amount series connection of pumps to the same pump shaft, while a short valve has been arranged in parallel for each constant displacement pump,
To form a multistage hydraulic pumping system.At this point, requiring the constant displacement pump of lower multiple and different discharge capacities as wind energy by rotating speed
Conversion element, and select the constant displacement pump of best discharge capacity to carry out by controlling the break-make of different short valves according to the rotating speed of impeller
The output of high-voltage oil liquid.In this way, not only can matching by constant displacement pump and the impeller slow-speed of revolution, realize to wind energy to limits
Be absorbed and utilized, keep constant displacement pump to export the continuous-stable of fluid, and best discharge capacity is selected according to passing through the case where wind energy
Constant displacement pump the fluid of output can be maintained to big pressure, small flow status, to the maximum extent reduce fluid in system
The loss of middle flow process improves finally to the utilization rate of wind energy and system to the transfer efficiency of wind energy, ensures final hair
Electric quality.
2, different by the way that multiple parallel with one another and energy storage pressure is arranged in the hydraulic motor electricity generation system of the present invention
Accumulator, so that it may the difference of exported oil liquid pressure when being worked according to different pump groups, select the most suitable storage of energy-storage pressure
Energy device carries out the accumulation of energy of high-voltage oil liquid.In this way, not only load excessive can be caused to lead to wind to avoid excessively high due to energy-storage pressure
Wheel can not continue to rotate, and can be to avoid being caused since energy-storage pressure is too low under wind wheel hypervelocity and wind energy absorption efficiency
Drop improves to realize the continued smooth running of wind wheel to after being absorbed and utilized and be converted to hydraulic energy to wind energy of wind energy
Efficiently storage.
3, multiple parallel with one another and by multiple shut-off valves by being arranged in the hydraulic motor electricity generation system of the present invention
The generator for carrying out the mutually different generated outputs of switching connection, so as to according to the needs of bearing power, control different pressures
The fluid stored in power accumulator flows to progress generating operation at the most matched generator of generated output, to realize to generator
High efficiency drive, improve the generating efficiency and quality of entire generating set.
4, in the present invention, by using the combination of multistage hydraulic pumping system and multistage hydraulic motor electricity generation system, thus
It can be formed between the generator by the constant displacement pump of different displacements, the accumulator of different energy storage pressure and different generated outputs and be appointed
Meaning combination forms the hydraulic wind power generating set with different power generation parameters, to greatly improve the generating set to practical work
The adaptability of condition improves the flexibility in practical applications of entire wind power generating set and reliability.
Description of the drawings
Fig. 1 is the systematic schematic diagram of multistage hydraulic type wind power generating set in an embodiment of the present invention.
Specific implementation mode
It describes in detail in the following with reference to the drawings and specific embodiments to technical scheme of the present invention.
In conjunction with shown in Fig. 1, the multistage hydraulic type wind power generating set of the present embodiment, including hydraulic pump system 1, hydraulic motor
Electricity generation system 2, high-pressure oil passage 3 and low pressure oil way 4.
Hydraulic pump system 1 includes the pump group 13 of impeller 11, pump shaft 12 and two different displacements.Wherein, each pump group
13 include a constant displacement pump 131, one outlet check valve 132 and a short valve 133.Outlet check valves 132 are located at constant displacement pump
Between 131 and high-pressure oil passage 3, unidirectionally exported in fluid to high-pressure oil passage 3 for controlling constant displacement pump 131.Short valve 133 with it is quantitative
Pump 131 is connected in parallel, and one end of short valve 133 is located between the outlet end and Outlet check valves 132 of constant displacement pump 131, separately
One end is connected to by low pressure oil way 4 with the input end of constant displacement pump 131.Two pump groups 13 are connected in parallel on high-pressure oil passage 3 and low pressure oil way 4
Between, and one end of pump shaft 12 is connect with impeller 11, the other end by the constant displacement pump 131 of different displacements in two pump groups 13 successively
It is connected in series with, to which two constant displacement pumps 131 can be made to synchronize rotation under the drive of impeller 11.
Hydraulic motor electricity generation system 2, including hydraulic motor 21, generator 22, accumulator 23 and accumulation of energy check valve 24.Hydraulic pressure
The input end of motor 21 is connect with high-pressure oil passage 3, and the outlet end of hydraulic motor 21 is connect with low pressure oil way 4, in constant displacement pump
131, closed-loop hydraulic system is formed between hydraulic motor 21, high-pressure oil passage 3 and low pressure oil way 4.Hydraulic motor 21 and generator 22
It is coaxially connected, drive the operating of generator 22 to generate electricity by hydraulic motor 21.Accumulator 23 and accumulation of energy check valve 24 are located at simultaneously
On high-pressure oil passage 3, and compared to accumulation of energy check valve 24, accumulator 23 closer to hydraulic motor 21 input end, to pass through
The high-voltage oil liquid that accumulation of energy check valve 24 makes accumulator 23 export flows to hydraulic motor 21 all along high-pressure oil passage 3.
In addition, being additionally provided with a speed probe 14 in hydraulic pump system 1, carried out for the rotating speed to impeller 11 real-time
Detection.Meanwhile it is set on high-pressure oil passage 3 there are one pressure sensor 31, the pressure for detecting fluid in high-pressure oil passage 3.
Preferably, in the present embodiment, short valve 133 uses 2/2-way solenoid directional control valve, so as to short valve
133 carry out remote electrically controlled, break-make road control of the realization to short valve 133, and then real to the progress fault control of constant displacement pump 131.
In addition, further include a safety valve 15 in hydraulic pump system 1, and safety valve 15 be located at high-pressure oil passage 3 with it is low
Between pressure oil road 4, the maximum pressure for limiting fluid in high-pressure oil passage 3 ensures the safe and reliable of entire generating set operation
Property.
Using the multistage hydraulic type wind power generating set of the present embodiment when carrying out practical wind-power electricity generation, first according to rotating speed
Sensor 14 carries out short circuit to different short valves 133 or open circuit controls, to by 11 band of wind wheel to the Rotating speed measring of wind wheel 11
The constant displacement pump 131 for moving best discharge capacity carries out the output of high-voltage oil liquid, and other constant displacement pumps 131 are then made in the short circuit of short valve 133
Short-circuit idle running is carried out under, hydraulic pump system 1 is made to be maintained at big pressure, the working condition of small flow, reduces system to the maximum extent
Hydraulic slip in system improves the transfer efficiency to wind energy to the utilization rate of wind energy and system；Then it is exported by hydraulic pump system 1
High-voltage oil liquid smooth drive is carried out to hydraulic motor 21, so that generator 22 is maintained at stable generating state, export high-quality
Electricity improves power generation quality, equally can also the high-voltage oil liquid that hydraulic pump system 1 exports directly be had previously been stored in accumulator 23
In, in case subsequent power generation uses.
Wherein, the pump group 13 of two different displacements is provided in the hydraulic pump system of the present embodiment 1, equally in other realities
It applies in example, the pump group 13 of more different displacements can also be set as the case may be, to be carried out more with the rotating speed of impeller 11
Add and accurately match, increase the accommodation to wind speed, improves working efficiency of the hydraulic pump system under different operating modes.
Preferably, further include oil-supplementing system 5 and fuel tank 6 in the wind power generating set of the present embodiment.Oil-supplementing system 5 includes
Slippage pump 51 and repairing overflow valve 52.Wherein, the oil inlet end of slippage pump 51 is connected to fuel tank 6, the oil outlet end of slippage pump 51
It is connected to low pressure oil way 4, to which the fluid in fuel tank 6 can be delivered in low pressure oil way 4 by slippage pump 51, to hydraulic pump
System 1 carries out fluid supplement.The oil inlet end of repairing overflow valve 52 is located at the oil outlet end of slippage pump 51, repairing overflow valve 52
Oil outlet end is connected to fuel tank 6, to carry out pressure control to the supplement fluid that slippage pump 51 exports by repairing overflow valve 52,
Stablize the supplement oil liquid pressure entered in low pressure oil way 4.
In addition, the oil outlet in slippage pump 51 is additionally provided with a repairing check valve 53, for controlling the fuel-displaced of slippage pump 51
The one-way flow of mouth end fluid, avoids fluid reflux from damaging slippage pump 51.
Further, in hydraulic pump system 1 further include an oil return overflow valve 16.Oil return overflow valve 16 is located at low pressure oil way
Between 4 and fuel tank 6, for the high-temperature oil liquid in low pressure oil way 4 to be back in fuel tank 6, and then matched with oil-supplementing system 5,
Realize the control to oil liquid temperature in hydraulic pump system 1.
In conjunction with shown in Fig. 1, set that there are three the hydraulic motors that are connected in parallel with each other in the wind power generating set of the present embodiment
Electricity generation system 2, and first shut-off valve 25 is designed in each hydraulic motor electricity generation system 2.Wherein, the first cut-off
Valve 25 is located in high-pressure oil passage 3, and positioned at the upstream position of accumulation of energy check valve 24.In this way, by controlling different hydraulic motors
The break-make of first shut-off valve 25 in electricity generation system 2, you can the high-voltage oil liquid that control hydraulic pump system 1 exports flows to different hydraulic pressure
In motor electricity generation system 2, to drive the generator 22 in different hydraulic motor electricity generation systems 2 to generate electricity.
Preferably, in this embodiment, the generator 22 in three hydraulic motor electricity generation systems 2 is respectively three different power generations
The generator of power.In this way, the power of high-voltage oil liquid, choosing can be exported according to the needs and hydraulic pump system 1 of bearing power
It selects the most matched generator of generated output and carries out generating operation, so that generator is maintained at optimum Working, to improve to wind
Effective conversion of energy improves the generating efficiency and power generation quality of entire generating set.
Preferably, in this embodiment, different accumulation of energy pressures are respectively adopted in the accumulator 23 in three hydraulic motor electricity generation systems 2
The accumulator of power.In this manner it is possible to it is different according to the pressure of 131 output high-voltage oil liquid of different basis weights pump, select energy-storage pressure most
Suitable accumulator 23 carries out the accumulation of energy of high-voltage oil liquid, avoid due to energy-storage pressure is excessively high and cause load excessive cause wind wheel without
Method continually and steadily rotates and reduces effective storage to high-voltage oil liquid since energy-storage pressure is too low, to finally keep wind wheel
Continual and steady running and be converted to the efficient storage after hydraulic energy to wind energy.
It is further preferred that further including 26, thirds of second shut-off valve in each hydraulic motor electricity generation system 2
Shut-off valve 27 and the 4th shut-off valve 28.Wherein, in each hydraulic motor electricity generation system 2, the second shut-off valve 26 and
Three shut-off valves 27 are sequentially located between accumulator 23 and hydraulic motor 21, and one end of the 4th shut-off valve 28 is located at the second cut-off
Between valve 26 and third shut-off valve 27, and the other end of all 4th shut-off valves 28 is then interconnected, thus will be parallel with one another
The concatenation connection of hydraulic motor electricity generation system 2.In this way, by the second shut-off valve 26, third shut-off valve 27 and the 4th shut-off valve 28
Break-make cooperation control, can not only select the accumulators 23 of different energy-storage pressures to carry out selectively the hydraulic energy that wind energy convert
Storage improves the efficient storage to wind energy and utilizes, and can be according to load requirement by discharging the height in different accumulators 23
Pressure oil liquid drives the most matched generator 22 of generated output to carry out generating operation, the power generation to make generator 22 be maintained at best
In power bracket, ensure final power generation quality.
Preferably, the first shut-off valve 25, the second shut-off valve 26, third shut-off valve 27 and the 4th shut-off valve 28 are all made of two
Two electric change valves improve to which the work relationship realized between three hydraulic motor electricity generation systems 2 carries out remote control
Automation to entire generator set control.
In addition, in the generating set of the present embodiment, three-level pressure is formd by the way that three hydraulic motor electricity generation systems 2 are arranged
Power accumulation of energy and three-level energy storing and electricity generating, to improve the utilization rate to wind energy and the quality of power generation.Equally, in other embodiment
In, greater number of hydraulic motor electricity generation system can be arranged according to the difference of operating mode completely, the pressure for forming more levels stores
Energy and energy storage power generation more accurately store wind energy to realize and generate electricity to the driving of generator, improve to wind energy
Utilization rate and the quality of power generation.
Claims (10)
1. a kind of multistage hydraulic type wind power generating set, which is characterized in that including hydraulic pump system, hydraulic motor electricity generation system,
High-pressure oil passage and low pressure oil way；Wherein,
The hydraulic pump system includes the pump group of impeller, pump shaft and at least two different displacements；The pump group includes one fixed
Amount pump, one outlet check valve and a short valve, wherein the Outlet check valves are located at the constant displacement pump and the high pressure oil
Between road, controls the constant displacement pump and unidirectionally export in fluid to the high-pressure oil passage, the short valve and the quantitative parallel connection of pumps,
And one end of the short valve is located between the outlet end and the Outlet check valves of the constant displacement pump, and the other end passes through described
Low pressure oil way is connected to the input end of the constant displacement pump；At least two pump group is connected in parallel on the high-pressure oil passage and the low pressure
Between oil circuit, and one end of the pump shaft is connect with the impeller, and the other end is by the pump group of at least two different displacements
In the constant displacement pump be sequentially connected in series；
The hydraulic motor electricity generation system, including hydraulic motor, generator, accumulator and accumulation of energy check valve；The hydraulic motor
Input end connect with the high-pressure oil passage, the outlet end of the hydraulic motor is connect with the low pressure oil way；The hydraulic pressure horse
It is connect up to the generator coaxle；The accumulator and the accumulation of energy check valve are located on the high-pressure oil passage simultaneously, and
The accumulator all flow to the import of the hydraulic motor closer to the hydraulic motor, the fluid of the accumulator output
End.
2. multistage hydraulic type wind power generating set according to claim 1, which is characterized in that in the hydraulic pump system also
Including a safety valve, the safety valve is between the high-pressure oil passage and the low pressure oil way.
3. multistage hydraulic type wind power generating set according to claim 1, which is characterized in that the wind power generating set is also wrapped
Include oil-supplementing system and fuel tank；The oil-supplementing system includes slippage pump and repairing overflow valve, the oil inlet end of the slippage pump and institute
Fuel tank connection is stated, the oil outlet end of the slippage pump is connected to the low pressure oil way, the oil inlet end position of the repairing overflow valve
It is connected to the fuel tank in the oil outlet end at the oil outlet end of the slippage pump, the repairing overflow valve.
4. multistage hydraulic type wind power generating set according to claim 3, which is characterized in that in the hydraulic pump system also
Including an oil return overflow valve, the oil return overflow valve is between the low pressure oil way and the fuel tank.
5. multistage hydraulic type wind power generating set according to claim 1, which is characterized in that the short valve uses two
Two electric change valves.
6. the multistage hydraulic type wind power generating set according to any one of claim 1-5, which is characterized in that the wind-force
Generating set includes at least two hydraulic motor electricity generation systems being connected in parallel with each other, and in each hydraulic pressure horse
Up to further including first shut-off valve in electricity generation system；First shut-off valve is located in the high-pressure oil passage, and is located at institute
State the upstream position of accumulation of energy check valve.
7. multistage hydraulic type wind power generating set according to claim 6, which is characterized in that each described hydraulic motor
The energy-storage pressure of accumulator in electricity generation system is different.
8. multistage hydraulic type wind power generating set according to claim 6, which is characterized in that each described hydraulic motor
The generated output of generator in electricity generation system is different.
9. multistage hydraulic type wind power generating set according to claim 6, which is characterized in that each described hydraulic motor
Further include second shut-off valve, a third shut-off valve and the 4th shut-off valve in electricity generation system；In each liquid
In pressure motor electricity generation system, second shut-off valve and the third shut-off valve are sequentially located at the accumulator and the hydraulic pressure horse
Between reaching, and one end of the 4th shut-off valve is between second shut-off valve and the third shut-off valve；All institutes
The other end for stating the 4th shut-off valve is interconnected.
10. multistage hydraulic type wind power generating set according to claim 9, which is characterized in that first shut-off valve, institute
It states the second shut-off valve, the third shut-off valve and the 4th shut-off valve and is all made of 2/2-way solenoid directional control valve.
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| CN110439749A (en) * | 2019-08-02 | 2019-11-12 | 集美大学 | A kind of hydraulic wind electricity generating system |
| CN111828408A (en) * | 2020-07-16 | 2020-10-27 | 浙江大学 | Cascade hydraulic motor high-voltage power generation system |
| CN115962167A (en) * | 2023-01-03 | 2023-04-14 | 吉林大学 | Hydraulic hybrid power system based on multistage constant voltage network and servo motor pump set |
| CN116292108A (en) * | 2023-03-17 | 2023-06-23 | 浙江大学 | Hydraulic wind driven generator system and control method |
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| CN108661863B (en) | 2023-10-03 |
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