CN112479314B - Hydraulic wind power generation and seawater desalination hybrid system - Google Patents
Hydraulic wind power generation and seawater desalination hybrid system Download PDFInfo
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- CN112479314B CN112479314B CN202011320789.0A CN202011320789A CN112479314B CN 112479314 B CN112479314 B CN 112479314B CN 202011320789 A CN202011320789 A CN 202011320789A CN 112479314 B CN112479314 B CN 112479314B
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- 239000013535 sea water Substances 0.000 title claims abstract description 121
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 120
- 238000010248 power generation Methods 0.000 title claims abstract description 59
- 239000013505 freshwater Substances 0.000 claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000001223 reverse osmosis Methods 0.000 claims description 17
- 239000012528 membrane Substances 0.000 claims description 16
- 230000001502 supplementing effect Effects 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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
- 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
- F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
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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
- F03D9/28—Wind motors characterised by the driven apparatus the apparatus being a pump or a compressor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/40—Transmission of power
- F05B2260/406—Transmission of power through hydraulic systems
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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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Energy (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- Power Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Wind Motors (AREA)
Abstract
The application is suitable for the technical field of wind power generation and seawater desalination, and provides a hydraulic type wind power generation and seawater desalination hybrid system which comprises a wind power generation unit, a seawater desalination unit and a hydraulic compensation unit; the wind power generation unit is respectively connected with the seawater desalination unit, the hydraulic compensation unit and the power grid, and is used for converting wind energy into electric energy and hydraulic energy, transmitting the generated electric energy to the power grid, the seawater desalination unit and the compensation unit, and transmitting the generated hydraulic energy to the seawater desalination unit; the seawater desalination unit is used for converting seawater into fresh water by using electric energy and hydraulic energy generated by the wind power generation unit; the hydraulic compensation unit is connected with the seawater desalination unit and is used for generating compensation hydraulic energy by using the electric energy generated by the wind power generation unit; when the hydraulic energy provided by the wind power generation unit for the seawater desalination unit is insufficient, the hydraulic compensation unit provides compensation hydraulic energy for the seawater desalination unit. Can solve the problem of large energy consumption in seawater desalination in the prior art.
Description
Technical Field
The application belongs to the technical field of wind power generation and seawater desalination, and particularly relates to a hydraulic type wind power generation and seawater desalination hybrid system.
Background
The global available fresh water resource only accounts for 0.3 percent of the total amount of the fresh water resource, the stock is limited, the per-capita fresh water resource is continuously reduced along with the problems of population growth, environmental deterioration and the like, and the seawater desalination as one of the fresh water resource source modes is more and more emphasized by countries in the world. In islands and remote areas of inland, wind power resources are rich, but the reserves of fresh water resources are small and not enough to maintain daily production and living needs, so that the desalination treatment of seawater or inland bitter salt water to obtain fresh water resources has great significance for improving local economy and resident life.
At present, the main methods for seawater desalination comprise: distillation, reverse osmosis, electrodialysis, freezing, etc., but these techniques rely on electric power for driving, requiring the use of large amounts of electric power, increasing the load on the grid.
Disclosure of Invention
In view of this, the embodiment of the application provides a hydraulic wind power generation and seawater desalination hybrid system to solve the problem of large energy consumption in seawater desalination in the prior art.
In order to solve the technical problem, the embodiment of the application provides a hydraulic wind power generation and seawater desalination hybrid system, which comprises a wind power generation unit, a seawater desalination unit and a hydraulic compensation unit;
the wind power generation unit is respectively connected with the seawater desalination unit, the hydraulic compensation unit and the power grid, and is used for converting wind energy into electric energy and hydraulic energy, transmitting the generated electric energy to the power grid, the seawater desalination unit and the compensation unit, and transmitting the generated hydraulic energy to the seawater desalination unit;
the seawater desalination unit is used for converting seawater into fresh water by using electric energy and hydraulic energy generated by the wind power generation unit;
the hydraulic compensation unit is connected with the seawater desalination unit and is used for generating compensation hydraulic energy by using the electric energy generated by the wind power generation unit; when the hydraulic energy provided by the wind power generation unit for the seawater desalination unit is insufficient, the hydraulic compensation unit provides compensation hydraulic energy for the seawater desalination unit.
In one possible implementation manner, the wind power generation unit includes a wind wheel, a wind speed sensor, a first transmission shaft, a second transmission shaft, a first fixed displacement pump, a tower, a first rotational speed torque sensor, a second rotational speed torque sensor, a first low-pressure pipeline, a first high-pressure pipeline, a second high-pressure pipeline, a power controller, an electro-hydraulic proportional throttle valve, a first flow sensor, a first rotational speed controller, a first variable motor, a generator, and a multifunctional meter;
the wind wheel and the wind speed sensor are arranged at the top end of the tower, the wind wheel is connected with the first quantitative pump through the first transmission shaft, the first rotating speed torque sensor is arranged on the first transmission shaft, an oil inlet of the first fixed displacement pump is connected with an oil outlet of the first variable motor through the first low-pressure pipeline, an oil outlet of the first fixed displacement pump is connected with an oil inlet of the electro-hydraulic proportional throttle valve through the first high-pressure pipeline, an oil outlet of the electro-hydraulic proportional throttle valve is connected with an oil inlet of the first variable motor through the second high-pressure pipeline, the first flow sensor is arranged on the second high-pressure pipeline, the first variable motor is connected with a generator through the second transmission shaft, the second rotating speed torque sensor is arranged on the second transmission shaft, and the second high-pressure pipeline and the first low-pressure pipeline are both connected with the seawater desalination unit;
the power output end of the generator is connected with a power grid through the multifunctional instrument, the power controller is respectively connected with the first rotating speed torque sensor, the second rotating speed torque sensor, the wind speed sensor, the multifunctional instrument and the first variable motor, and the first rotating speed controller is respectively connected with the first flow sensor, the first rotating speed torque sensor, the second rotating speed torque sensor, the wind speed sensor, the first variable motor and the electro-hydraulic proportional throttle valve.
In one possible implementation manner, the wind power generation unit further comprises a first check valve, a second check valve, an overflow valve, an oil supply pump and an oil supply tank;
the oil inlet of the oil supplementing pump is connected with the oil supplementing oil tank, the oil outlet of the oil supplementing pump is respectively connected with the oil inlet of the first one-way valve and the oil inlet of the second one-way valve, the oil outlet of the first one-way valve is connected with the first high-pressure pipeline, the oil outlet of the second one-way valve is connected with the first low-pressure pipeline, and the overflow valve is installed between the oil outlet of the oil supplementing pump and the oil supplementing oil tank.
In a possible implementation, the wind power generation unit further comprises a safety valve;
the relief valve is installed between the second high-pressure line and the first low-pressure line.
In one possible implementation manner, the seawater desalination unit includes a second variable displacement motor, a second constant displacement pump, a third high-pressure pipeline, a fifth high-pressure pipeline, a control valve group, a first pressure sensor, a second pressure sensor, a seawater desalination pressurizing device, a second low-pressure pipeline, a reverse osmosis membrane desalination device, a third flow sensor, a fourth flow sensor, a seawater lift pump, and a second rotation speed controller;
an oil inlet of the second variable motor is connected with the second high-pressure pipeline, an oil outlet of the second variable motor is connected with the first low-pressure pipeline, and the second variable motor is coaxially connected with the second constant delivery pump; an oil outlet of the second fixed displacement pump is connected with the control valve group through the third high-pressure pipeline, an oil inlet of the second fixed displacement pump is connected with the control valve group, and the first pressure sensor is installed on the third high-pressure pipeline; an oil outlet of the control valve group is connected with the seawater desalination pressurizing device through the fifth high-pressure pipeline, and an oil inlet of the control valve group is connected with the seawater desalination pressurizing device through the second low-pressure pipeline; the sea water desalination pressurizing device is connected with the reverse osmosis membrane desalination pressurizing device, the fourth flow sensor is installed at a liquid outlet of the reverse osmosis membrane desalination pressurizing device, the sea water lift pump is connected with the sea water desalination pressurizing device, and the second pressure sensor and the third flow sensor are both installed between the sea water desalination pressurizing device and the reverse osmosis membrane desalination pressurizing device;
the second rotation speed controller is respectively connected with the second variable motor, the first pressure sensor, the second pressure sensor, the third flow sensor and the fourth flow sensor.
In a possible implementation manner, the hydraulic compensation unit comprises a variable frequency motor, a second flow sensor, a third fixed displacement pump and a fourth high-pressure pipeline;
the variable frequency motor is coaxially connected with the third quantitative pump, an oil outlet of the third quantitative pump is connected with the control valve group through the fourth high-pressure pipeline, an oil inlet of the third quantitative pump is connected with the control valve group through the low-pressure pipeline, the second flow sensor is installed on the fourth high-pressure pipeline, and a control end of the variable frequency motor and the second flow sensor are both connected with the second rotating speed controller.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the hydraulic type wind power generation and seawater desalination hybrid system provided by the embodiment of the application comprises a wind power generation unit, a seawater desalination unit and a hydraulic compensation unit, wherein the wind power generation unit converts wind energy into electric energy and hydraulic energy, transmits the generated electric energy to a power grid, the seawater desalination unit and the compensation unit, and transmits the generated hydraulic energy to the seawater desalination unit; the seawater desalination unit converts seawater into fresh water by using electric energy and hydraulic energy generated by the wind power generation unit; the hydraulic compensation unit generates compensation hydraulic energy by using electric energy generated by the wind power generation unit, and provides the compensation hydraulic energy for the seawater desalination unit when the hydraulic energy provided by the wind power generation unit for the seawater desalination unit is insufficient. The seawater desalination unit can utilize the electric energy and the hydraulic energy generated by the wind power generation unit to carry out seawater desalination, an external power supply is not needed, the use of the electric energy is reduced, and the cost of seawater desalination is saved. Meanwhile, the electric energy generated by the wind power generation unit can be transmitted to a power grid, and the revenue is increased.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic connection diagram of a hydraulic wind power generation and seawater desalination hybrid system provided in an embodiment of the present application;
FIG. 2 is a functional block diagram of a wind power unit provided by an embodiment of the present application;
FIG. 3 is a schematic block diagram of a seawater desalination unit provided in an embodiment of the present application;
fig. 4 is a schematic block diagram of a hydraulic pressure compensation unit provided in an embodiment of the present application.
In the figure: 100. a wind power generation unit; 200. a seawater desalination unit; 300. a hydraulic pressure compensation unit; 1. a wind wheel; 2. a wind speed sensor; 3. a first drive shaft; 4. a first fixed displacement pump; 5. a tower; 6. a second rotational speed controller; 7. a first rotational speed torque sensor; 8. a first low pressure line; 9. a first check valve; 10. a second one-way valve; 11. a power controller; 12. an electro-hydraulic proportional throttle valve; 13. a first high-pressure line; 14. a second high pressure line; 15. an overflow valve; 16. an oil replenishing pump; 17. an oil supplementing oil tank; 18. a safety valve; 19. a first flow sensor; 20. a first rotational speed controller; 21. a first variable displacement motor; 22. a second rotational speed torque sensor; 23. a second drive shaft; 24. a generator; 25. a multifunctional instrument; 26. a power grid; 27. a second variable displacement motor; 28. a second fixed displacement pump; 29. a first pressure sensor; 30. a third high-pressure line; 31. a variable frequency motor; 32. a third fixed displacement pump; 33. a fourth high pressure line; 34. a second flow sensor; 35. a control valve group; 36. a fifth high-pressure line; 37. a second low pressure line; 38. a seawater desalination pressurizing device; 39. a third flow sensor; 40. a second pressure sensor; 41. a reverse osmosis membrane desalination plant; 42. a fourth flow sensor; 43. a seawater lift pump.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in the specification of this application and the appended claims, the term "if" may be interpreted contextually as "when …" or "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
Fig. 1 shows a connection schematic diagram of a hydraulic wind power generation and seawater desalination hybrid system provided in an embodiment of the present application. Referring to fig. 1, the hydraulic type wind power generation and seawater desalination hybrid system includes a wind power generation unit 100, a seawater desalination unit 200, and a hydraulic compensation unit 300, wherein the wind power generation unit 100 is respectively connected with the seawater desalination unit 200, the hydraulic compensation unit 300, and a power grid 26, and the hydraulic compensation unit 300 is connected with the seawater desalination unit 200.
Specifically, the wind power generation unit 100 converts wind energy into electric energy and hydraulic energy, and transmits the generated electric energy to the power grid 26, the seawater desalination unit 200, and the compensation unit, and transmits the generated hydraulic energy to the seawater desalination unit 200. The seawater desalination unit 200 converts seawater into fresh water using electric energy and hydraulic energy generated by the wind power generation unit 100. The hydraulic compensation unit 300 generates compensation hydraulic energy using the electric energy generated by the wind power generation unit 100, and when the hydraulic energy provided by the wind power generation unit 100 to the seawater desalination unit 200 is insufficient, the hydraulic compensation unit 300 provides the compensation hydraulic energy to the seawater desalination unit 200.
The seawater desalination unit 200 can utilize the electric energy and the hydraulic energy generated by the wind power generation unit 100 to desalinate seawater, and an external power supply is not needed, so that the use of the electric energy is reduced, and the cost of seawater desalination is saved. Meanwhile, the electric energy generated by the wind power generation unit 100 can be transmitted to the power grid 26, so that the revenue is increased. The hydraulic compensation unit 300 can provide compensation hydraulic energy to the seawater desalination unit 200 when the hydraulic energy provided by the wind power generation unit 100 to the seawater desalination unit 200 is insufficient, so as to ensure that the seawater desalination unit 200 has enough hydraulic energy to perform seawater desalination, thereby improving the stability of system operation.
As shown in fig. 1 and 2, the wind power generation unit 100 includes a wind rotor 1, a wind speed sensor 2, a first transmission shaft 3, a second transmission shaft 23, a first constant displacement pump 4, a tower 5, a first rotational speed torque sensor 7, a second rotational speed torque sensor 22, a first low pressure pipeline 8, a first high pressure pipeline 13, a second high pressure pipeline 14, a power controller 11, an electro-hydraulic proportional throttle valve 12, a first flow sensor 19, a first rotational speed controller 20, a first variable motor 21, a generator 24, and a multifunctional meter 25.
The wind wheel 1 and the wind speed sensor 2 are installed at the top end of the tower 5, the wind wheel 1 is connected with the first quantitative pump 4 through the first transmission shaft 3, the first rotating speed torque sensor 7 is installed on the first transmission shaft 3, an oil inlet of the first quantitative pump 4 is connected with an oil outlet of the first variable motor 21 through the first low-pressure pipeline 8, an oil outlet of the first quantitative pump 4 is connected with an oil inlet of the electro-hydraulic proportional throttle valve 12 through the first high-pressure pipeline 13, an oil outlet of the electro-hydraulic proportional throttle valve 12 is connected with an oil inlet of the first variable motor 21 through the second high-pressure pipeline 14, the first flow sensor 19 is installed on the second high-pressure pipeline 14, the first variable motor 21 is connected with the generator 24 through the second transmission shaft 23, the second rotating speed torque sensor 22 is installed on the second transmission shaft 23, and the second high-pressure pipeline 14 and the first low-pressure pipeline 8 are both connected with the seawater desalination unit 200. The power output end of the generator 24 is connected with a power grid 26 through a multifunctional instrument 25, the power controller 11 is respectively connected with the first rotating speed torque sensor 7, the second rotating speed torque sensor 22, the wind speed sensor 2, the multifunctional instrument 25 and the first variable motor 21, and the first rotating speed controller 20 is respectively connected with the first flow sensor 19, the first rotating speed torque sensor 7, the second rotating speed torque sensor 22, the wind speed sensor 2, the first variable motor 21 and the electro-hydraulic proportional throttle valve 12.
Specifically, under the drive of wind-force, wind wheel 1 rotates, and wind wheel 1 drives first ration pump 4 work through first transmission shaft 3, and first ration pump 4 produces hydraulic energy. The hydraulic energy generated by the first quantitative pump 4 is transmitted to the seawater desalination unit 200 through the first low-pressure pipeline 8 and the second high-pressure pipeline 14, so as to provide hydraulic energy for the seawater desalination unit 200 to desalinate seawater; meanwhile, the hydraulic energy generated by the first quantitative pump 4 is transmitted to the first variable motor 21 through the first low-pressure pipeline 8, the first high-pressure pipeline 13 and the second high-pressure pipeline 14, the first variable motor 21 is driven to work, the first variable motor 21 drives the generator 24 to generate electricity, and the electric energy generated by the generator 24 is processed by the multifunctional instrument 25 and then transmitted to the power grid 26.
The wind speed sensor 2 is used for collecting wind speed at the wind wheel 1, the first rotating speed and torque sensor 7 is used for collecting rotating speed and torque output by the wind wheel 1, the second rotating speed and torque sensor 22 is used for collecting rotating speed and torque output by the first variable motor 21, the first flow sensor 19 is used for collecting flow of liquid in the second high-pressure pipeline 14, and the multifunctional instrument 25 is used for collecting frequency and voltage output by the generator 24.
In the power generation grid-connection stage of the wind power generation unit 100, the first rotation speed controller 20 controls the swing angle of the first variable motor 21 and the opening degree of the electro-hydraulic proportional throttle valve 12 by acquiring parameters of the wind speed sensor 2, the first rotation speed torque sensor 7, the second rotation speed torque sensor 22 and the multifunctional meter 25, for example, controls the rotation speed of the first variable motor 21 to be stable at 1500r/min ± 6r/min, and ensures that the electric energy generated by the generator 24 can be smoothly merged into the power grid 26.
In the power control stage of the wind power generation unit 100, the valve port of the electro-hydraulic proportional throttle valve 12 is opened to the maximum, so that the active power output by the generator 24 meets the smoothness of the power generation requirement. The power controller 11 controls the swing angle of the first variable motor 21 by collecting parameters of the wind speed sensor 2, the first rotating speed and torque sensor 7, the second rotating speed and torque sensor 22 and the multifunctional instrument 25, so that the generator 24 outputs smooth power, and electric energy generated by the generator can be smoothly merged into the power grid 26.
As shown in fig. 1, the wind turbine generator unit 100 further includes a first check valve 9, a second check valve 10, an overflow valve 15, an oil supply pump 16, and an oil supply tank 17. An oil inlet of the oil replenishing pump 16 is connected with an oil replenishing tank 17, and an oil outlet of the oil replenishing pump 16 is respectively connected with an oil inlet of the first one-way valve 9 and an oil inlet of the second one-way valve 10. An oil outlet of the first check valve 9 is connected with a first high-pressure pipeline 13, an oil outlet of the second check valve 10 is connected with a first low-pressure pipeline 8, and an overflow valve 15 is installed between an oil outlet of an oil supplementing pump 16 and an oil supplementing oil tank 17.
Specifically, when the wind power generation unit 100 works for a long time and oil in the pipeline is insufficient, the oil supply pump 16 works to supply oil to the first high-pressure pipeline 13 through the first check valve 9 and supply oil to the first low-pressure pipeline 8 through the second check valve 10. When the oil pressure in the first high-pressure line 13 or the first low-pressure line 8 is higher than the set pressure, the oil flowing out of the oil supply pump 16 flows back to the oil supply tank 17 through the overflow valve 15.
As shown in fig. 1, the wind power unit 100 further comprises a safety valve 18, the safety valve 18 being installed between the second high-pressure pipe 14 and the first low-pressure pipe 8.
Specifically, the relief valve 18 is capable of controlling the pressure difference between the second high-pressure line 14 and the first low-pressure line 8, and when the pressure difference between the second high-pressure line 14 and the first low-pressure line 8 is greater than a set value, the relief valve 18 opens to reduce the pressure difference between the second high-pressure line 14 and the first low-pressure line 8 to ensure the safety of the lines in operation.
As shown in fig. 1 and 3, the seawater desalination unit 200 includes a second variable displacement motor 27, a second fixed displacement pump 28, a third high-pressure pipeline 30, a fifth high-pressure pipeline 36, a control valve group 35, a first pressure sensor 29, a second pressure sensor 40, a seawater desalination pressurization device 38, a second low-pressure pipeline 37, a reverse osmosis membrane desalination device 41, a third flow sensor 39, a fourth flow sensor 42, a seawater lift pump 43, and a second rotation speed controller 6.
Specifically, an oil inlet of the second variable motor 27 is connected with the second high-pressure pipeline 14, an oil outlet of the second variable motor 27 is connected with the first low-pressure pipeline 8, and the second variable motor 27 is coaxially connected with the second fixed displacement pump 28; an oil outlet of the second quantitative pump 28 is connected with the control valve group 35 through a third high-pressure pipeline 30, an oil inlet of the second quantitative pump 28 is connected with the control valve group 35, and the first pressure sensor 29 is installed on the third high-pressure pipeline 30; an oil outlet of the control valve group 35 is connected with a seawater desalination pressurizing device 38 through a fifth high-pressure pipeline 36, and an oil inlet of the control valve group 35 is connected with the seawater desalination pressurizing device 38 through a second low-pressure pipeline 37. The sea water desalination pressurizing device 38 is connected with the reverse osmosis membrane desalination pressurizing device 41, the fourth flow sensor 42 is installed at a liquid outlet of the reverse osmosis membrane desalination pressurizing device 41, the sea water lift pump 43 is connected with the sea water desalination pressurizing device 38, and the second pressure sensor 40 and the third flow sensor 39 are both installed between the sea water desalination pressurizing device 38 and the reverse osmosis membrane desalination pressurizing device 41. The second rotational speed controller 6 is connected to the second variable motor 27, the first pressure sensor 29, the second pressure sensor 40, the third flow sensor 39, and the fourth flow sensor 42, respectively.
The oil in the second high-pressure pipeline 14 and the first low-pressure pipeline 8 provides hydraulic energy for the second variable motor 27 to drive the second variable motor 27 to work, and the second variable motor 27 drives the second fixed displacement pump 28 to work. The second constant delivery pump 28 outputs hydraulic energy to the control valve group 35, and the control valve group 35 provides hydraulic energy to the reverse osmosis membrane desalination device 41 through the sea water desalination pressurizing device 38, so that the reverse osmosis membrane desalination device 41 carries out sea water desalination. The seawater lift pump 43 is used to convey seawater to the seawater desalination pressurizing device 38, providing seawater.
The first pressure sensor 29 is used for collecting the pressure of oil in the third high-pressure pipeline 30, the second pressure sensor 40 is used for collecting the pressure of liquid output by the seawater desalination pressurizing device 38, the third flow sensor 39 is used for collecting the flow of liquid output by the seawater desalination pressurizing device 38, and the fourth flow sensor 42 is used for collecting the flow of fresh water output by the reverse osmosis membrane desalination device 41. The second rotation speed controller 6 collects parameters of the first pressure sensor 29, the second pressure sensor 40, the third flow sensor 39 and the fourth flow sensor 42, controls the rotation speed of the second variable motor 27, and further controls the rotation speed of the second constant delivery pump 28, so that the second constant delivery pump 28 provides stable hydraulic energy for seawater desalination.
As shown in fig. 1 and 4, the hydraulic pressure compensating unit 300 includes a variable frequency motor 31, a second flow sensor 34, a third fixed displacement pump 32, and a fourth high pressure line 33. The variable frequency motor 31 is coaxially connected with the third quantitative pump 32, an oil outlet of the third quantitative pump 32 is connected with the control valve group 35 through a fourth high-pressure pipeline 33, an oil inlet of the third quantitative pump 32 is connected with the control valve group 35 through a low-pressure pipeline, the second flow sensor 34 is installed on the fourth high-pressure pipeline 33, and a control end of the variable frequency motor 31 and the second flow sensor 34 are both connected with the second rotating speed controller 6.
Specifically, when the hydraulic energy transmitted from the second high-pressure pipeline 14 cannot meet the hydraulic energy required in the sea water desalination process, the second rotational speed controller 6 controls the variable frequency motor 31 to rotate, the variable frequency motor 31 drives the third quantitative pump 32 to work, and the third quantitative pump 32 provides supplementary hydraulic energy for the control valve group 35, so that the hydraulic energy is increased, and the requirement of the subsequent sea water desalination process on the hydraulic energy is met.
The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (3)
1. A hydraulic wind power generation and seawater desalination hybrid system is characterized by comprising a wind power generation unit, a seawater desalination unit and a hydraulic compensation unit;
the wind power generation unit is respectively connected with the seawater desalination unit, the hydraulic compensation unit and the power grid, and is used for converting wind energy into electric energy and hydraulic energy, transmitting the generated electric energy to the power grid, the seawater desalination unit and the compensation unit, and transmitting the generated hydraulic energy to the seawater desalination unit;
the seawater desalination unit is used for converting seawater into fresh water by using electric energy and hydraulic energy generated by the wind power generation unit;
the hydraulic compensation unit is connected with the seawater desalination unit and is used for generating compensation hydraulic energy by using the electric energy generated by the wind power generation unit; when the hydraulic energy provided by the wind power generation unit for the seawater desalination unit is insufficient, the hydraulic compensation unit provides compensation hydraulic energy for the seawater desalination unit;
the wind power generation unit comprises a wind wheel, a wind speed sensor, a first transmission shaft, a second transmission shaft, a first fixed displacement pump, a tower, a first rotating speed torque sensor, a second rotating speed torque sensor, a first low-pressure pipeline, a first high-pressure pipeline, a second high-pressure pipeline, a power controller, an electro-hydraulic proportional throttle valve, a first flow sensor, a first rotating speed controller, a first variable motor, a generator and a multifunctional instrument;
the wind wheel and the wind speed sensor are arranged at the top end of the tower, the wind wheel is connected with the first quantitative pump through the first transmission shaft, the first rotating speed torque sensor is arranged on the first transmission shaft, an oil inlet of the first fixed displacement pump is connected with an oil outlet of the first variable motor through the first low-pressure pipeline, an oil outlet of the first fixed displacement pump is connected with an oil inlet of the electro-hydraulic proportional throttle valve through the first high-pressure pipeline, an oil outlet of the electro-hydraulic proportional throttle valve is connected with an oil inlet of the first variable motor through the second high-pressure pipeline, the first flow sensor is arranged on the second high-pressure pipeline, the first variable motor is connected with a generator through the second transmission shaft, the second rotating speed torque sensor is arranged on the second transmission shaft, and the second high-pressure pipeline and the first low-pressure pipeline are both connected with the seawater desalination unit;
the power output end of the generator is connected with a power grid through the multifunctional instrument, the power controller is respectively connected with the first rotating speed torque sensor, the second rotating speed torque sensor, the wind speed sensor, the multifunctional instrument and the first variable motor, and the first rotating speed controller is respectively connected with the first flow sensor, the first rotating speed torque sensor, the second rotating speed torque sensor, the wind speed sensor, the first variable motor and the electro-hydraulic proportional throttle valve;
the seawater desalination unit comprises a second variable motor, a second constant delivery pump, a third high-pressure pipeline, a fifth high-pressure pipeline, a control valve group, a first pressure sensor, a second pressure sensor, a seawater desalination pressurizing device, a second low-pressure pipeline, a reverse osmosis membrane desalination device, a third flow sensor, a fourth flow sensor, a seawater lifting pump and a second rotating speed controller;
an oil inlet of the second variable motor is connected with the second high-pressure pipeline, an oil outlet of the second variable motor is connected with the first low-pressure pipeline, and the second variable motor is coaxially connected with the second constant delivery pump; an oil outlet of the second fixed displacement pump is connected with the control valve group through the third high-pressure pipeline, an oil inlet of the second fixed displacement pump is connected with the control valve group, and the first pressure sensor is installed on the third high-pressure pipeline; an oil outlet of the control valve group is connected with the seawater desalination pressurizing device through the fifth high-pressure pipeline, and an oil inlet of the control valve group is connected with the seawater desalination pressurizing device through the second low-pressure pipeline; the sea water desalination pressurizing device is connected with the reverse osmosis membrane desalination pressurizing device, the fourth flow sensor is installed at a liquid outlet of the reverse osmosis membrane desalination pressurizing device, the sea water lift pump is connected with the sea water desalination pressurizing device, and the second pressure sensor and the third flow sensor are both installed between the sea water desalination pressurizing device and the reverse osmosis membrane desalination pressurizing device;
the second rotating speed controller is respectively connected with the second variable motor, the first pressure sensor, the second pressure sensor, the third flow sensor and the fourth flow sensor;
the hydraulic compensation unit comprises a variable frequency motor, a second flow sensor, a third constant delivery pump and a fourth high-pressure pipeline;
the variable frequency motor is coaxially connected with the third quantitative pump, an oil outlet of the third quantitative pump is connected with the control valve group through the fourth high-pressure pipeline, an oil inlet of the third quantitative pump is connected with the control valve group through the low-pressure pipeline, the second flow sensor is installed on the fourth high-pressure pipeline, and a control end of the variable frequency motor and the second flow sensor are both connected with the second rotating speed controller.
2. The hydraulic type wind power generation and seawater desalination hybrid system of claim 1, wherein the wind power generation unit further comprises a first check valve, a second check valve, an overflow valve, an oil replenishing pump and an oil replenishing tank;
the oil inlet of the oil supplementing pump is connected with the oil supplementing oil tank, the oil outlet of the oil supplementing pump is respectively connected with the oil inlet of the first one-way valve and the oil inlet of the second one-way valve, the oil outlet of the first one-way valve is connected with the first high-pressure pipeline, the oil outlet of the second one-way valve is connected with the first low-pressure pipeline, and the overflow valve is installed between the oil outlet of the oil supplementing pump and the oil supplementing oil tank.
3. The hydraulic type wind power generation and seawater desalination hybrid system of claim 1, wherein the wind power generation unit further comprises a safety valve;
the relief valve is installed between the second high-pressure line and the first low-pressure line.
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| CN114920327A (en) * | 2022-05-26 | 2022-08-19 | 南京工程学院 | Control system and method for directly driving seawater to desalt water quality by energy storage type hydraulic fan |
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| CN105134494A (en) * | 2015-08-07 | 2015-12-09 | 燕山大学 | System and method for controlling grid connection and disconnection of vertical axis hydraulic type wind generating set |
| CN111322204A (en) * | 2020-03-26 | 2020-06-23 | 秦皇岛正时乐液压设备有限公司 | Hydraulic fan direct drive sea water desalination |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105134494A (en) * | 2015-08-07 | 2015-12-09 | 燕山大学 | System and method for controlling grid connection and disconnection of vertical axis hydraulic type wind generating set |
| CN111322204A (en) * | 2020-03-26 | 2020-06-23 | 秦皇岛正时乐液压设备有限公司 | Hydraulic fan direct drive sea water desalination |
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