CN111022264A - Hydraulic wind generating set - Google Patents
Hydraulic wind generating set Download PDFInfo
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- CN111022264A CN111022264A CN202010019640.2A CN202010019640A CN111022264A CN 111022264 A CN111022264 A CN 111022264A CN 202010019640 A CN202010019640 A CN 202010019640A CN 111022264 A CN111022264 A CN 111022264A
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- 239000007788 liquid Substances 0.000 claims abstract description 144
- 238000010248 power generation Methods 0.000 claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 239000012530 fluid Substances 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 63
- 230000001502 supplementing effect Effects 0.000 description 20
- 239000007789 gas Substances 0.000 description 14
- 238000004146 energy storage Methods 0.000 description 12
- 238000011010 flushing procedure Methods 0.000 description 12
- 230000005611 electricity Effects 0.000 description 5
- 230000001960 triggered effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Classifications
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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
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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
-
- 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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0244—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking
- F03D7/0248—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking by mechanical means acting on the power train
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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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0264—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for stopping; controlling in emergency situations
- F03D7/0268—Parking or storm protection
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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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/028—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output 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
- F03D9/10—Combinations of wind motors with apparatus storing energy
- F03D9/17—Combinations of wind motors with apparatus storing energy storing energy in pressurised fluids
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
-
- 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
Abstract
The invention discloses a hydraulic wind generating set, which at least comprises a power source set and a power generation set, wherein the power source set comprises a wind wheel, a gear ring in transmission fit with the wind wheel, a plurality of planet wheels meshed with the gear ring and a hydraulic pump with a power input end in transmission fit with the planet wheels, the power generation set comprises a plurality of hydraulic motors and generators matched with the rated power of the hydraulic motors and driven, the liquid outlets of the hydraulic pumps are connected with the liquid inlets of the hydraulic motors through liquid inlet main pipes, and the liquid outlets of the hydraulic motors are connected with the liquid inlets of the hydraulic pumps through liquid return main pipes; a clutch used for controlling the on-off of power is arranged between the hydraulic pump and the planet wheel; the invention can select the number of the constant pressure variable hydraulic pumps to operate by combining or interrupting the clutch, and the number of the constant pressure variable hydraulic pumps to operate according to the adaptability of the wind power, the adaptability of the power of the generator and the power of the wind wheel is strong, thereby effectively ensuring that the hydraulic power is matched with the power of the generator and improving the utilization rate of wind energy.
Description
Technical Field
The invention belongs to the technical field of wind power generation, and particularly relates to a hydraulic wind generating set.
Background
With the continuous decrease in traditional energy sources in the world over recent years, new energy sources are continuously being explored to replace less and less fossil fuels. As an environment-friendly renewable energy source, wind power generation is greatly developed, and due contribution is made to gradual exhaustion of world energy sources and environmental crisis. The hydraulic wind generating set equipment is not paid attention as one type of wind power generation, and the hydraulic wind generating set equipment is tested and put into use all over the world, so that the hydraulic wind generating set equipment can gradually replace the traditional speed-increasing gearbox-double-fed generator system and a direct-drive-converter power generation system to become a novel wind power generation technology.
At present, the adaptability of the power of a generator and the power of a wind wheel is not strong due to the large wind speed variation range in the actual operation process of most hydraulic wind generating sets, the matching of the hydraulic power and the power of the generator cannot be ensured, and the wind energy utilization rate and the power generation quality are further reduced.
The hydraulic wind generating set is provided for solving the problems, can adapt to wind speeds with different sizes, and can convert wind energy with different powers into mechanical energy, convert the mechanical energy into hydraulic energy and convert the hydraulic energy into electric energy so as to adapt to the wind energy with different powers to generate electricity;
disclosure of Invention
In view of this, the invention provides a hydraulic wind generating set, which is adaptable to wind speeds of different sizes, and converts wind energy of different powers into mechanical energy, mechanical energy into hydraulic energy, and hydraulic energy into electric energy, so as to adapt to wind energy of different powers to perform power generation;
the hydraulic wind generating set comprises a power source set and a power generation set, wherein the power source set comprises a wind wheel, a gear ring in transmission fit with the wind wheel, a plurality of planet wheels meshed with the gear ring and a hydraulic pump with a power input end in transmission fit with the planet wheels, the power generation set comprises a plurality of hydraulic motors and generators matched with the rated power of the hydraulic motors and driven, the liquid outlets of the hydraulic pumps are connected with the liquid inlets of the hydraulic motors through liquid inlet main pipes, and the liquid outlets of the hydraulic motors are connected with the liquid inlets of the hydraulic pumps through liquid return main pipes; and a clutch used for controlling the on-off of power is arranged between the constant-pressure variable hydraulic pump and the planet wheel.
Furthermore, a valve is arranged between the main liquid inlet pipe and each liquid inlet of the hydraulic motor.
Further, the clutch is matched with the valve at the liquid inlet of the hydraulic motor one by one or matched with the valve at the liquid inlet of the hydraulic motor one by one to realize synchronous interruption or communication so that the total output power of the hydraulic pump is matched with the total input power of the hydraulic motor.
Furthermore, the wind wheel is in transmission fit with the gear ring through a rotating shaft, a first torque and rotating speed sensor is installed on the rotating shaft, the power output end of the hydraulic motor is in transmission fit with the power input end of the generator through a transmission shaft, and a second torque and rotating speed sensor is arranged on the transmission shaft.
Furthermore, valves arranged between the main liquid inlet pipe and the liquid inlets of the hydraulic motors are electric stop valves.
Further, the hydraulic pump is a constant pressure variable hydraulic pump.
Furthermore, the displacement of each constant-pressure variable hydraulic pump is different, the rated power of each hydraulic motor is different, and the rated power of the generator is matched with the rated power of the corresponding hydraulic motor.
Furthermore, the gear ring is of an internal tooth structure, and the planet gear is meshed with the inner side of the gear ring.
Furthermore, a No. seven check valve for preventing liquid from flowing reversely is arranged at the liquid outlet of the hydraulic pump.
The invention has the beneficial effects that:
the invention can select the quantity of the constant-pressure variable hydraulic pumps needing to be operated by combining or interrupting the clutch, adaptively matches the quantity of the constant-pressure variable hydraulic pumps according to the wind power, has strong adaptability of the power of the generator and the power of the wind wheel, effectively ensures that the hydraulic power is matched with the power of the generator, and improves the utilization rate of wind energy and the power generation quality. The wind wheel has a wide range of adaptable wind power, the wind power threshold for starting the unit to generate power is low, the unit is convenient to generate power in a breeze state, all clutches are separated when the unit does not need to generate power and needs to stop, and the safety of braking can be ensured; the matching mode of the gear ring and the planet wheel can ensure that the wind wheel synchronously drives each constant-pressure variable hydraulic pump and also meets the requirement of high rotating speed of the variable pump through a larger transmission ratio; the clutch is arranged, so that the rotating shaft of the wind wheel is not required to be braked by a brake when the engine is stopped, the stable stop of the engine unit is facilitated by the action of the clutch, and the safety is high;
drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a power source assembly;
FIG. 3 is a schematic diagram of a power generation set structure;
FIG. 4 is a schematic diagram of an energy storage pack;
FIG. 5 is a schematic diagram of an oil compensating group;
FIG. 6 is a schematic diagram of a control group structure;
Detailed Description
The embodiment provides a hydraulic wind generating set, which comprises a power source set 10, a generating set 20 and an energy storage set 30, wherein the power source set comprises a wind wheel 11, a gear ring 12 in transmission fit with the wind wheel, a plurality of planet wheels 13 engaged with the gear ring, and a constant-pressure variable hydraulic pump 14 with a power input end in transmission fit with the planet wheels, a clutch 15 for controlling the on-off of power is arranged between the constant-pressure variable hydraulic pump and the planet wheels, the generating set comprises a plurality of hydraulic motors and a generator 22 matched with the hydraulic motors 21 and driven, the liquid outlet of each constant-pressure variable hydraulic pump is connected with the liquid inlet of each hydraulic motor through a liquid inlet main pipe 61, and the liquid outlet of each hydraulic main pipe motor is connected with the liquid inlet of each constant-pressure variable hydraulic pump through; the energy storage group is used for storing energy when the clutch is closed but no power generation demand exists, and discharging energy when the clutch is disconnected to drive the power generation group to generate power.
As shown in fig. 1, the power input end of the constant-pressure variable hydraulic pump is the input end of the pump body rotating shaft, and the constant-pressure variable hydraulic pump can better capture and track the need of wind energy changes with different powers and ensure the stability of pressure during power generation of the generator and liquid charging of the accumulator; the variable displacement pump is driven to rotate by the planet wheels so as to drive the internal circulation oil to flow, the wind energy drives the wind wheel 11 to rotate, the wind wheel is in running fit with the gear ring through the rotating shaft 17, the wind energy is converted into mechanical energy, the wind wheel is also provided with a brake for assisting in braking the rotating shaft, the gear ring drives each planet wheel to rotate so as to drive the constant-pressure variable hydraulic pump through the planet wheel, the mechanical energy is transmitted to different constant-pressure variable hydraulic pumps, and the mechanical energy is converted into hydraulic energy; the constant-pressure variable hydraulic pump drives oil to flow to a liquid inlet of the hydraulic motor 21 in the liquid inlet main pipe 61 and drives the hydraulic motor to run, then the oil flows out of a liquid outlet of the hydraulic motor, the oil flows back to a liquid inlet of the constant-pressure variable hydraulic pump through the liquid return main pipe 62, and in the process, the hydraulic motor drives the generator to run to realize power generation and convert hydraulic energy into electric energy; the first torque and rotating speed sensor 18 is mounted on the rotating shaft, so that the torque value and the rotating speed value on the rotating shaft can be monitored in real time, the quantity of the constant-pressure variable hydraulic pumps which can be selectively operated is combined with or interrupted, the clutch is arranged, so that the wind wheel rotating shaft is not required to be braked by a brake when the engine is stopped, the stable stop of the engine set is facilitated by the action of the clutch, all the clutches are separated when the power generation is not required and the engine is stopped, and the braking safety can be ensured; in the embodiment, the displacement of each constant-pressure variable hydraulic pump is preferably different, so that the operation number of the constant-pressure variable hydraulic pumps is conveniently adjusted to match different input powers of the wind wheel, the matching mode of the gear ring and the planet wheel can enable the wind wheel to synchronously drive each constant-pressure variable hydraulic pump, and the requirement of high rotation speed of the variable pump can be met through a large transmission ratio, wherein the gear ring 12 is of an internal tooth structure, and the planet wheel 13 is meshed with the inner side of the gear ring, so that the gear ring and the planet wheel can be compactly arranged, and the occupied space is reduced; the clutch can be manually controlled by observing the data of the first torque and speed sensor, so that the matching of the input power of the wind wheel and the total output power of each constant-pressure variable hydraulic pump is matched, or the data of the first torque and speed sensor can be uploaded to the controller, the opening and closing of the clutch are automatically controlled by analyzing the input power starting instruction of the wind wheel through the controller, the running number of the constant-pressure variable hydraulic pumps is adaptively matched according to the wind power, the input power adaptability of the constant-pressure variable hydraulic pumps and the wind wheel is strong, the matching of the hydraulic power and the generating power is effectively ensured, the wind energy utilization rate and the generating quality are improved, the wind wheel is wide in range suitable for the wind power, the wind power threshold for starting a unit to generate electricity is low, and the electricity.
In the embodiment, the oil supplementing device further comprises an oil supplementing group 40, wherein the oil supplementing group comprises an oil tank 41, an oil supplementing pump 42 for supplementing oil from the oil tank to a liquid return main pipe 62, and a filter 43 connected to an oil pipe between the oil tank and the oil supplementing pump and used for filtering oil; the filter is installed and is filtered fluid on the main oil tank, and the filter adopts current filtration equipment, and is specifically not being repeated, and the fluid is makeed oil supplementing pump and is used for supplementing the fluid to circulate revealing of in-process and supplementing from returning the fluid to be responsible for in the direct fluid return to the oil tank of the fluid disappearance that causes in the main pipe of fluid return with fluid in the fluid main pipe, and this structure can guarantee that the inlet of constant voltage variable hydraulic pump inhales sufficient pressure fluid, also provides the condition for the forced circulation cooling of oil in the oil return main pipe simultaneously.
In this embodiment, the energy storage group includes a plurality of energy storage devices 31 and a plurality of air storage tanks 32, the energy accumulator is provided with a liquid through port and an air vent, the air vent of the energy accumulator is connected with an air inlet of the air storage tank, the accumulator liquid inlet is connected with the liquid inlet main pipe 61, the pipelines at the accumulator liquid inlet, the air vent and the air inlet of the air storage tank are provided with valves, when storing energy, the constant pressure variable hydraulic pump drives the oil to circulate so that part of the oil in the liquid inlet main pipe enters the energy accumulator and compresses the air in the energy accumulator, when the air pressure rises to a certain threshold value, compressed air enters the air storage tank, and when the energy is released, when the hydraulic pressure in the energy accumulator drops to a certain threshold value, the compressed air in the air storage tank enters the energy accumulator and compresses oil in the energy accumulator, so that the oil enters the liquid inlet main pipe for internal circulation to assist power generation, and the specific threshold value is manually set according to the actual use working condition. The air inlets of the air storage tanks are used as air inlets during energy storage and air outlets during energy discharge, as shown in the attached drawings, the energy accumulator is of a tank-shaped structure, an isolation piston is arranged in each air storage tank, and the air storage tanks are of the existing structure and are not specifically described; the liquid passing port is positioned at the bottom of the energy accumulator and used for carrying out oil liquid exchange with the liquid inlet main pipe, the air vent is arranged at the top of the energy accumulator, namely, air in the energy accumulator is ensured to enter or be discharged from the upper part, valves are arranged at the air vent and the liquid passing port of the energy accumulator, and valves are arranged at the air inlet and the air outlet of the air storage tank, so that each energy accumulator or each air storage tank can be used independently or in a matched manner; when the wind wheel rotates to drive the constant-pressure variable hydraulic pump to work but no power generation requirement exists, the valve at the liquid inlet of the energy accumulator is firstly opened, when the air pressure in the energy accumulator is not increased, the valve at the air vent of the energy accumulator and the valve at the air inlet of the air storage tank are opened, the oil pressure in the liquid inlet main pipe is higher, part of oil enters the energy accumulator to compress the gas in the energy accumulator, when the air pressure rises to a certain value, the compressed gas in the energy accumulator enters the gas storage tank to form high-pressure gas state to realize energy storage, when the power generation demand is met but the wind power is insufficient, when the hydraulic pressure in the energy accumulator is reduced to a certain value, the gas storage tank releases energy, the gas storage tank releases high-pressure gas to enter the energy accumulator to drive the oil liquid in the energy accumulator to enter the liquid inlet main pipe to realize oil liquid circulation power generation, after the gas storage tanks are connected in parallel, the gas inlets are gathered and communicated with the gas outlets of the energy accumulators, and when energy is stored, one or more energy accumulators can charge gas to one or more gas storage tanks at the same time; when the energy is released for power generation, one or more air storage tanks can simultaneously charge air to one or more energy accumulators, so that the liquid discharge pressure of the energy accumulators is ensured to be stable.
In this embodiment, an electric stop valve 24 is arranged between the main liquid inlet pipe and each liquid inlet of the hydraulic motor, and the clutches and the electric stop valves are matched one by one or in a one-to-many matching manner to realize synchronous interruption or communication so that the total output power of the constant-pressure variable hydraulic pump is matched with the total input power of the hydraulic motor; in this embodiment, it is preferable that the rated powers of the hydraulic motors are different, wherein the generator is matched with the rated power of the corresponding hydraulic motor, and the matching indicates that the rated powers of the generator and the corresponding hydraulic motor are the same, or the rated power of the hydraulic motor is slightly larger than the rated power of the generator, and the difference between the rated powers of the generator and the hydraulic motor is not large, the power output end of the hydraulic motor and the power input end of the generator are in transmission fit through a transmission shaft, and a second torque and rotation speed sensor 23 is installed on the transmission shaft, so as to monitor the input power of the generator in real time, wherein the first torque and rotation speed sensor and the second torque and rotation speed sensor may be sensor assemblies formed by separate torque sensors and rotation speed sensors, or may be sensors integrated with functions of detecting torque and rotation speed at the same time, and the, the electric stop valve is arranged at the liquid inlet of the hydraulic motor and used for controlling whether the hydraulic motor works when oil enters the hydraulic motor, and the electric stop valve is adopted to be beneficial to matching control with the clutch, namely whether the corresponding generator works is controlled, namely when the electric stop valve is connected, the corresponding hydraulic motor and the generator work, and when the electric stop valve is disconnected, the corresponding hydraulic motor and the generator stop working; the clutch and the electric stop valves can be manually matched and controlled, one clutch is matched with one or more electric stop valves, and the clutch and the electric stop valves realize synchronous interruption or communication, namely when the clutch is combined, the electric stop valve matched with the combined clutch is opened, and the corresponding constant-pressure variable hydraulic pump, the hydraulic motor and the generator work simultaneously, so that the output power of the constant-pressure variable hydraulic pump is matched with the input power of the generator set; the clutch and the electric stop valve can be matched through manual setting and can also be automatically matched and controlled through the controller, when the clutch and the electric stop valve are controlled through the controller, an actuator of the electric stop valve can be remotely controlled by the clutch to be switched on and off, namely, the corresponding electric stop valve is automatically opened when the clutch is combined, the corresponding electric stop valve is automatically closed when the clutch is separated, and the input data of the wind wheel and the input data of the generator can be conveniently extracted by the controller in real time through the arrangement of the first torque speed sensor and the second torque speed sensor, so that the clutch and the electric stop valve can be conveniently matched and controlled; valves between the main liquid inlet pipe and liquid inlets of the hydraulic motors are electric stop valves, so that the clutches can be conveniently controlled remotely; the structure can ensure that the high output power of the constant-pressure variable hydraulic pump corresponds to the high input power of the hydraulic motor, and the low output power of the constant-pressure variable hydraulic pump corresponds to the low input power of the hydraulic motor.
In this embodiment, the device further comprises a control group 50, the control group comprises a flushing valve 51 connected between a liquid inlet main pipe 61 and a liquid return main pipe 62, the flushing valve is a three-position three-way hydraulic control reversing valve, a liquid outlet of the flushing valve is connected to the oil tank, the flushing valve 10 reverses after high-pressure oil is introduced into the liquid inlet main pipe, and after reversing, part of high-temperature and low-pressure oil in the liquid return main pipe is discharged into the oil tank 41 through the flushing valve; wherein the flushing valve is a common component in a hydraulic cycle, and is not described in detail; when the wind wheel rotates to drive the constant-pressure variable hydraulic pump to act, oil in the liquid inlet main pipe forms a high-pressure circulation state, high-pressure oil enters the flushing valve 10 and drives the flushing valve to reverse, after reversing, the liquid return main pipe is communicated with a liquid outlet of the flushing valve, about 25% of high-temperature low-pressure oil in the liquid return main pipe is ensured to be discharged into an oil tank, meanwhile, the oil supplementing pump supplements the oil in the liquid return main pipe to ensure the stability of the oil pressure of the liquid return main pipe, and part of the oil in the liquid return main pipe enters the oil tank to be subjected to forced circulation cooling and; the structure is beneficial to the circulating cooling and filtering of hydraulic oil, the heat dissipation capacity of the unit is improved, and the service life of the unit is prolonged;
in this embodiment, the control group further includes an overflow valve 52, a liquid inlet of the overflow valve is connected to a liquid outlet of the flushing valve, a liquid outlet of the overflow valve is connected to a liquid outlet of the oil supplementing pump, a first check valve 53 through which oil only flows from the oil supplementing pump to the overflow valve in a one-way manner is disposed on a pipeline between the liquid outlet of the oil supplementing pump and the liquid inlet of the overflow valve, and a second check valve 54 through which oil only flows from the oil supplementing pump to the liquid return main pipe in a one-way manner is disposed on a pipeline between the liquid outlet of the oil supplementing pump and the; it is shown to combine the attached drawing, and this structure makes constant voltage variable hydraulic pump inlet pressure, oil supplementing pump liquid outlet pressure the same with the pressure that the overflow valve set for, and through adjusting the set pressure of overflow valve and adjusting constant voltage variable hydraulic pump inlet pressure and oil supplementing pump liquid outlet pressure, this structure improves whole hydraulic system pressure stability, and fluid flow direction is guaranteed to one of them check valve and No. two check valves, prevents to flow against the current, further improves the stability that hydraulic system flows.
In this embodiment, the control set 50 further includes a third check valve 55, a fourth check valve 56, a fifth check valve 57, a sixth check valve 58 and a safety valve 59, which are connected in sequence, a pipeline between a liquid inlet of the third check valve 55 and a liquid outlet of the fourth check valve 56 is communicated with the liquid inlet main pipe 61, a pipeline between a liquid outlet of the fifth check valve 57 and a liquid inlet of the sixth check valve 58 is communicated with the liquid return main pipe 62, and a pipeline between a liquid outlet of the third check valve 55 and a liquid outlet of the sixth check valve 58 and a pipeline between a liquid inlet of the fourth check valve 56 and a liquid inlet of the fifth check valve 57 are respectively connected with a liquid inlet and a liquid outlet of the safety valve 59. The four one-way valves are combined with the safety valve to form a buffer brake valve group, the four one-way valves are connected end to form a self-circulation closed loop, and the buffer brake valve group is used for buffering hydraulic impact which is abnormally increased in a pipeline when a brake is normally maintained or an emergency temporary brake is carried out, so that the stability and the safety of a brake effect are improved; meanwhile, the pressure of the liquid inlet main pipe and the charging pressure of the energy accumulator can be kept stable by combining the safety valve, the stability is high when the energy storage group is used for generating electricity, and the energy utilization rate of the energy storage group is improved when the energy storage group is used for generating electricity.
In this embodiment, the gas tank 32 is provided with a liquid level meter 33 for detecting the height of the isolation piston in the gas tank; the air storage tank is provided with an air inlet and an air outlet, the air inlet of the air storage tank is connected to an air vent of the energy accumulator, the air outlet of the air storage tank is provided with a valve for standby, when the liquid level in the air storage tank is at the highest liquid level, the valve at the air inlet of the air storage tank is closed, the valve at the air outlet is closed, and at the moment, the pressure of the air; when the liquid level in the air storage tank is at the lowest liquid level, a valve at the air inlet of the air storage tank is opened, a valve at the air outlet is closed, and at the moment, air is fed and stored; when the liquid level is in the middle, only the valve at the air inlet is opened for air inlet energy storage or the valve at the air inlet and the valve at the air outlet are opened simultaneously for air inlet or air outlet; or when the air storage tank is not provided with an air outlet and is only provided with an air inlet, the valve at the air inlet is controlled by the magnetic flap liquid level meter, when the liquid level in the air storage tank is at the highest liquid level, the valve at the air inlet of the air storage tank is closed, and the pressure of the air storage tank is maintained at the moment; when the liquid level in the air storage tank is at the lowest liquid level, a valve at the air inlet of the air storage tank is opened, and at the moment, air is fed for storing energy; when the liquid level is in the middle, the valve at the air inlet can be opened to store air in the air or release the air or the valve at the air inlet is closed for pressure maintaining, and the specific opening condition is determined according to the use working condition;
in this embodiment, the first pressure sensor 71 is disposed on the liquid inlet main pipe 61, the second pressure sensor 72 is disposed on the liquid return main pipe 62, the joint of the first pressure sensor 71 and the liquid inlet main pipe 61, the joint of the accumulator liquid inlet and the liquid inlet main pipe 61, the joint of the flushing valve 51 and the liquid inlet main pipe 61, the joint of the third check valve 55 and the fourth check valve 56, and the joint of the liquid inlet of the hydraulic motor and the liquid inlet main pipe 61 are sequentially arranged along the flow direction of the oil liquid on the liquid inlet main pipe, the joint of the second pressure sensor 72 and the liquid return main pipe 62, the joint of the liquid outlet of the oil supplementing pump 42 and the liquid return main pipe 62, the joint of the flushing valve 51 and the liquid return main pipe 62, the joint of the pipeline between the fifth check valve 57 and the sixth check valve 58 and the liquid return main pipe 62, and the joint of the liquid outlet of the hydraulic motor and the liquid return main pipe 62 are sequentially arranged along the direction opposite to the flowing direction of the oil liquid on the liquid return main pipe; as shown in the attached drawings, the arrangement positions of the first pressure sensor 71 and the second pressure sensor 72 can detect the pressure of a liquid outlet and a liquid inlet of the constant-pressure variable hydraulic pump in real time, so as to avoid other branches from influencing the detection result, the first pressure sensor and the second pressure sensor can be P250 type or other types of existing sensors, the first pressure sensor monitors the pressure of a liquid inlet main pipe in real time, and when the monitored value exceeds 10% of the system pressure, the safety valve 72 is triggered to overflow, so that the system pressure is maintained to be stable; the second pressure sensor monitors the pressure of the liquid return main pipe in real time, and when the pressure of the oil in the monitored liquid return main pipe exceeds 2.5MPa, the overflow valve 52 is triggered to overflow, so that sufficient low-temperature oil is sucked into a liquid inlet of the constant-pressure variable hydraulic pump, the safety valve and the overflow valve can be triggered through manual monitoring and operation, or the triggering is automatically controlled through the controller, details are not repeated, and the conditions for specifically triggering the overflow valve and the safety valve can be adjusted according to the use working condition;
in the embodiment, a seven-way check valve 16 for preventing oil liquid from flowing reversely is arranged at the liquid outlet of the constant-pressure variable hydraulic pump; as shown in the attached drawing, a seven-number one-way valve is matched at the liquid outlet of each constant-pressure variable hydraulic pump to ensure that oil flows outwards, prevent backflow and ensure the stability of a generator set.
When the generator set operates initially, sufficient nitrogen is filled into the energy accumulator, and the constant-pressure variable hydraulic pump, the oil tank, the filter, the oil supplementing pump, the hydraulic motor and all hydraulic pipelines are filled with clean hydraulic oil;
after the inflation and liquid filling are finished, entering a debugging stage to adjust whether an automatic control system of the generator set is perfect, and specifically performing the following steps:
1. braking the wind wheel rotating shaft 17 by using a brake, separating all clutches and closing all electric stop valves 24;
2. closing valves at an air port and a liquid through port of the energy accumulator 31, and closing valves at an air inlet and an air outlet of the air storage tank 32;
3. one or more clutches 15 are combined and separated, and all clutches can be automatically separated after being combined under the maximum power and obtaining an emergency stop command;
4. triggering instructions with different powers to control the action of the clutch, checking the on-off condition of one or more electric stop valves 24 corresponding to the clutch 15, and ensuring that the corresponding electric stop valves are triggered to be connected when the automatic clutch is combined and triggered to be disconnected when the automatic clutch is separated;
5. the brake releases the wind wheel rotating shaft 17;
6. opening valve bodies at the air vent and the liquid through hole of each energy accumulator 31, and opening valve bodies at the air inlet and the air outlet of the air storage tank 32;
7. the oil supplementing pump 43 is started, the wind wheel is used for driving to enable the generator to start normal power generation, and the energy is stored through the energy storage group when the power generation is not needed.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (9)
1. A fluid pressure type wind generating set which characterized in that: the wind power generation set comprises a wind wheel, a gear ring in transmission fit with the wind wheel, a plurality of planet wheels meshed with the gear ring and a hydraulic pump with a power input end in transmission fit with the planet wheels, the power generation set comprises a plurality of hydraulic motors and generators matched with the rated power of the hydraulic motors and driven, the liquid outlets of the hydraulic pumps are connected with the liquid inlets of the hydraulic motors through liquid inlet main pipes, and the liquid outlets of the hydraulic motors are connected with the liquid inlets of the hydraulic pumps through liquid return main pipes; and a clutch used for controlling the on-off of power is arranged between the hydraulic pump and the planet wheel.
2. The hydraulic wind power generation assembly of claim 1, wherein: and valves are arranged between the liquid inlet main pipe and the liquid inlets of the hydraulic motors.
3. The hydraulic wind power plant according to claim 2, wherein: the clutches and valves at the liquid inlet of the hydraulic motor are matched one by one or matched one by one to realize synchronous interruption or communication so that the total output power of the hydraulic pump is matched with the total input power of the hydraulic motor.
4. A hydraulic wind power plant according to claim 2 or 3, characterized in that: the wind wheel and the gear ring are in transmission fit through a rotating shaft, a first torque and rotating speed sensor is installed on the rotating shaft, the power output end of the hydraulic motor is in transmission fit with the power input end of the generator through a transmission shaft, and a second torque and rotating speed sensor is arranged on the transmission shaft.
5. The hydraulic wind power plant according to claim 2, wherein: valves arranged between the main liquid inlet pipe and the liquid inlets of the hydraulic motors are electric stop valves.
6. A hydraulic wind power plant according to claim 3, characterized in that: the hydraulic pump is a constant pressure variable hydraulic pump.
7. The hydraulic wind power generation assembly of claim 6, wherein: the displacement of each constant-pressure variable hydraulic pump is different, the rated power of each hydraulic motor is different, and the rated power of the generator is matched with the rated power of the corresponding hydraulic motor.
8. The hydraulic wind power generation assembly of claim 1, wherein: the gear ring is of an internal tooth structure, and the planet gear is meshed with the inner side of the gear ring.
9. The hydraulic wind power generation assembly of claim 1, wherein: and a No. seven check valve for preventing liquid from flowing reversely is arranged at the liquid outlet of the hydraulic pump.
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| CN202010019640.2A CN111022264A (en) | 2020-01-08 | 2020-01-08 | Hydraulic wind generating set |
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| CN202010019640.2A CN111022264A (en) | 2020-01-08 | 2020-01-08 | Hydraulic wind generating set |
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