CN208310958U - 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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- CN208310958U CN208310958U CN201820965327.6U CN201820965327U CN208310958U CN 208310958 U CN208310958 U CN 208310958U CN 201820965327 U CN201820965327 U CN 201820965327U CN 208310958 U CN208310958 U CN 208310958U
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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
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Abstract
The utility model 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 utility model 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 coaxially installed in series and is formed with the pump group of the different displacements of oil circuit parallel connection by multiple, multistage hydraulic motor electricity generation system by multiple and different energy storage pressure accumulator and multiple and different generated outputs generating set at.It is generated electricity using the multistage hydraulic type wind power generating set of the utility model, it not only can reduce the hydraulic slip in system, improve the transfer efficiency to the utilization rate of wind energy and system to wind energy, and can choose the generator progress generating operation for most adapting to power, improve the generating efficiency and quality of entire generating set.
Description
Technical field
The utility model belongs to technical field of wind power generation, and in particular to a kind of multistage hydraulic type wind power generating set.
Background technique
With the exhaustion of world's traditional energy in recent years, new 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 test all over the world or comes into operation, it will has gradually replaced traditional machine
The gear-driven generating set of tool.
Currently, can design in most of hydraulic wind power generating sets and convert wind energy into liquid 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 oil liquid.So
And since the revolving speed of variable pump is higher generally at several hundred thousands of turns, and the revolving 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 revolving speed of impeller, if can make using variable pump
At the failure damage in the variable pump inner body short time, thus cannot keep the continual and steady output oil liquid of variable pump, and
The fluctuation as existing for wind energy itself, randomness and intermittence so that wind wheel absorb energy also have apparent fluctuation,
Randomness and intermittence, and then keep the revolving speed of variable pump further unstable, make the pressure for exporting oil liquid and instability of flow and
It is uncontrollable.In this way, not only will increase the energy loss of oil liquid flow process in system pipeline, especially in big flow low-pressure
In the state of oil liquid 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, matching for hydraulic energy and generator power not can guarantee, and then cause
The reduction for the quality that generates electricity.
Utility model 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
With intermittence there are wind energy utilization and whole system low efficiency and the inferior problem of power generation, the utility model proposes
A kind of multistage hydraulic type wind power generating set.The wind power generating set, including hydraulic pump system, hydraulic motor electricity generation system, height
Pressure oil road and low pressure oil way;
Wherein, the hydraulic pump system, the pump group including impeller, pump shaft and at least two different displacements;The pump group
Including a constant displacement pump, one outlet check valve and a short valve, wherein the Outlet check valves be located at the constant displacement pump with
Between the high-pressure oil passage, control the constant displacement pump and unidirectionally export oil liquid into the high-pressure oil passage, the short valve with it is described
Constant displacement pump is in parallel, and one end of the short valve is located between the outlet end and the Outlet check valves of the constant displacement pump, separately
One end is connected to by the low pressure oil way with the input end of the constant displacement pump;At least two pump group is connected in parallel on the high pressure oil
Between road and the low pressure oil way, and one end of the pump shaft is connect with the impeller, the other end by described at least two not
It is sequentially connected in series with the constant displacement pump in the pump group of discharge capacity;
The hydraulic motor electricity generation system, including hydraulic motor, generator, accumulator and accumulation of energy check valve;It is described hydraulic
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 oil liquid 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, the oil outlet end of the slippage pump and the low pressure oil
Road connection, the oil inlet end of the repairing overflow valve are 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,
It 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 it is located 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 including second shut-off valve, one in each described hydraulic motor electricity generation system
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 utility model carries out wind-power electricity generation, have the advantages that
1, in the hydraulic pump system of the utility model, the pump group provided with multiple parallel connections, wherein all discharge capacities are different
Constant displacement pump be connected in series on the same pump shaft work driven by wind wheel, while being arranged in parallel a short circuit for each constant displacement pump
Valve, to form a multistage hydraulic pumping system.At this point, requiring the constant displacement pump of lower multiple and different discharge capacities as wind by revolving speed
Can conversion element, and according to the revolving speed of impeller, by controlling the on-off of different short valves, select the constant displacement pump of best discharge capacity into
The output of horizontal 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 the day of one's doom
Degree is absorbed and utilized, and constant displacement pump is kept to export the continuous-stable of oil liquid, and selects best row according to passing through the case where wind energy
The oil liquid of output can be maintained at big pressure, small flow status by the constant displacement pump of amount, so that reduction oil liquid is being to the maximum extent
The loss of flow process in system improves finally to the utilization rate of wind energy and system to the transfer efficiency of wind energy, guarantees final
Generate electricity quality.
2, in the hydraulic motor electricity generation system of the utility model, by the way that multiple parallel with one another and energy storage pressure is arranged
Different accumulator, so that it may which the difference of exported oil liquid pressure when being worked according to different pump groups selects energy-storage pressure to be most suitable for
Accumulator carry out high-voltage oil liquid accumulation of energy.In this way, not only load excessive can be caused to lead to avoid excessively high due to energy-storage pressure
Cause wind wheel that can not continue to rotate, and can be to avoid causing wind wheel hypervelocity and wind energy absorption efficiency since energy-storage pressure is too low
Decline 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
Efficient storage.
3, multiple parallel with one another and by multiple sections by being arranged in the hydraulic motor electricity generation system of the utility model
Only valve carries out the generator of the mutually different generated outputs of switching connection, so as to which according to the needs of bearing power, control is not
Progress generating operation at the most matched generator of generated output is flowed to the oil liquid stored in Pressure energy accumulator, to realize to hair
The high efficiency drive of motor improves 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,
So as to formed by the constant displacement pump of different displacements, the accumulator of different energy storage pressure and different generated outputs generator it
Between any combination formed have it is different power generation parameters hydraulic wind power generating set, to greatly improve the generating set to reality
The adaptability of border operating condition improves the flexibility and reliability of entire wind power generating set in practical applications.
Detailed description of the invention
Fig. 1 is the systematic schematic diagram of multistage hydraulic type wind power generating set in a kind of embodiment of the utility model.
Specific embodiment
It describes in detail in the following with reference to the drawings and specific embodiments to the technical solution of the utility model.
As shown in connection with 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, the pump group 13 including 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, oil liquid is unidirectionally exported into high-pressure oil passage 3 for controlling constant displacement pump 131.Short valve 133 and 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
Between 4, 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 according to
Secondary series connection, so that 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.It is hydraulic
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, thus 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 exports accumulator 23 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 revolving speed to impeller 11 real-time
Detection.Meanwhile a pressure sensor 31 is equipped on high-pressure oil passage 3, for detecting the pressure of oil liquid 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, on-off 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, for limiting the maximum pressure of oil liquid in high-pressure oil passage 3, guarantee 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 revolving speed
Sensor 14 carries out short circuit to different short valves 133 or open circuit controls, thus 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 the working condition of big pressure, small flow, reduces system to the maximum extent
Hydraulic slip in system improves the transfer efficiency to the utilization rate of wind energy and system to wind energy;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 the high-voltage oil liquid that hydraulic pump system 1 exports directly can also 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, so that the revolving speed with impeller 11 carries out more
Add and accurately match, increase the adaptation range to wind speed, improves working efficiency of the hydraulic pump system under different operating conditions.
It 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 the oil liquid in fuel tank 6 can be delivered in low pressure oil way 4 by slippage pump 51, to hydraulic
Pumping system 1 carries out oil liquid 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 to the supplement oil liquid that slippage pump 51 exports by repairing overflow valve 52
The supplement oil liquid pressure entered in low pressure oil way 4 is stablized in control.
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 oil liquid, avoids oil liquid reflux from damaging slippage pump 51.
It further, further include an oil return overflow valve 16 in hydraulic pump system 1.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.
As shown in connection with fig. 1, the hydraulic motor being connected in parallel with each other there are three being set 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, first section
Only valve 25 is located in high-pressure oil passage 3, and is located at the upstream position of accumulation of energy check valve 24.In this way, passing through the different hydraulic horses of control
Up to the on-off of the first shut-off valve 25 in electricity generation system 2, i.e., the high-voltage oil liquid that controllable hydraulic pump system 1 exports flows to different liquid
In pressure motor electricity generation system 2, so that the generator 22 in different hydraulic motor electricity generation systems 2 be driven 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 by 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
On-off cooperate control, not only can choose the accumulators 23 of different energy-storage pressures and hydraulic can be carried out selectivity to what wind energy was converted
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, so that generator 22 be made to be maintained at optimal power generation
In power bracket, guarantee 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 of position, remotely control the work relationship between three hydraulic motor electricity generation systems 2 to realize, are mentioned
Automation of the height to entire generator set control.
In addition, foring three-level pressure by the way that three hydraulic motor electricity generation systems 2 are arranged in the generating set of the present embodiment
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 embodiments
In, greater number of hydraulic motor electricity generation system can be set according to the difference of operating condition completely, the pressure for forming more levels stores
Energy and energy storage power generation improve to realize the storage more accurate to wind energy and generate electricity to the driving of generator 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, the pump group including 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, controlling the constant displacement pump and unidirectionally export oil liquid into the high-pressure oil passage, the short valve is in parallel with the constant displacement pump,
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 groups are 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 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 oil liquid 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 in the oil outlet end at the oil outlet end of the slippage pump, the repairing overflow valve with the fuel tank.
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. multistage hydraulic type wind power generating set described in any one of -5 according to claim 1, 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 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
It 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 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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CN201820965327.6U CN208310958U (en) | 2018-06-22 | 2018-06-22 | A kind of multistage hydraulic type wind power generating set |
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CN201820965327.6U CN208310958U (en) | 2018-06-22 | 2018-06-22 | A kind of multistage hydraulic type wind power generating set |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108661863A (en) * | 2018-06-22 | 2018-10-16 | 兰州理工大学 | A kind of multistage hydraulic type wind power generating set |
CN113915528A (en) * | 2021-10-28 | 2022-01-11 | 广州文冲船厂有限责任公司 | Pressure distribution system |
-
2018
- 2018-06-22 CN CN201820965327.6U patent/CN208310958U/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108661863A (en) * | 2018-06-22 | 2018-10-16 | 兰州理工大学 | A kind of multistage hydraulic type wind power generating set |
CN108661863B (en) * | 2018-06-22 | 2023-10-03 | 兰州理工大学 | Multistage hydraulic wind generating set |
CN113915528A (en) * | 2021-10-28 | 2022-01-11 | 广州文冲船厂有限责任公司 | Pressure distribution system |
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