CN110056465A - Water stream power generation system with exciting current self-regulating function - Google Patents
Water stream power generation system with exciting current self-regulating function Download PDFInfo
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- CN110056465A CN110056465A CN201910440616.3A CN201910440616A CN110056465A CN 110056465 A CN110056465 A CN 110056465A CN 201910440616 A CN201910440616 A CN 201910440616A CN 110056465 A CN110056465 A CN 110056465A
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- exciting current
- synchronous generator
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- 238000010248 power generation Methods 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 230000001360 synchronised effect Effects 0.000 claims abstract description 71
- 230000007246 mechanism Effects 0.000 claims abstract description 65
- 230000005284 excitation Effects 0.000 claims abstract description 28
- 230000001105 regulatory effect Effects 0.000 claims abstract description 26
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 19
- 230000009471 action Effects 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 description 19
- 230000006698 induction Effects 0.000 description 8
- 238000004364 calculation method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
-
- 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
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/16—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field due to variation of ohmic resistance in field circuit, using resistances switched in or out of circuit step by step
-
- 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
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
- F05B2220/7064—Application in combination with an electrical generator of the alternating current (A.C.) type
- F05B2220/70642—Application in combination with an electrical generator of the alternating current (A.C.) type of the synchronous type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/10—Special adaptation of control arrangements for generators for water-driven turbines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2103/00—Controlling arrangements characterised by the type of generator
- H02P2103/20—Controlling arrangements characterised by the type of generator of the synchronous type
-
- 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
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses the water stream power generation systems with exciting current self-regulating function, including rotary shaft and multiple water-poking sheets, one end of rotary shaft is equipped with connect cover, accommodating chamber is equipped in connect cover, rotary shaft protrudes into accommodating chamber, power generation mechanism and regulating mechanism are also connected in accommodating chamber, power generation mechanism includes synchronous generator and excitation system, the shaft of synchronous generator gear engage by way of with rotation axis connection, regulating mechanism includes slide rheostat, the end that rotary shaft protrudes into accommodating chamber is additionally provided with lead screw, mobile bar is connected on lead screw, the first lateral push rod is also connected on the upside of mobile bar.The present invention can effectively avoid the impact to power grid, at the same avoid bourn acting force it is too small power grid can not be carried out charging and the excessive damage caused by electric elements of bourn acting force.
Description
Technical field
The present invention relates to technical field of hydroelectric generation, specially a kind of generating power by water current with exciting current self-regulating function
System.
Background technique
In modern society, with the fast development of science and technology, demand of the people to the energy also increases increasingly, needs with to the energy
The pressure asked constantly increases, and people also increase the exploitation of the energy therewith；And with increasingly depleted, the tradition utilization of the energy
The mode that coal etc. generates electricity is faced with acid test, and in order to alleviate this status, current country vigorously advocates renewable
The utilization of the energy and green energy resource, such as thermal power generation, hydroelectric generation, wind-power electricity generation.
As a kind of generation mode of green energy resource, hydroelectric generation is widely used and develops, current waterpower
Electricity generation system generally comprises the hydraulic turbine and generator, and the hydraulic turbine rotates under the impact of water flow, then the shaft of generator is driven to revolve
Turn, alternator shaft rotates and then realizes power generation, the electric energy that generator issues pass through again after rectifier and transformer to power grid into
Row charging；Generator is generally divided into permanent magnet generator and excitation generator, and the rotor of permanent magnet generator generates magnetic using permanent magnet
, it is generally only applicable to small-sized hydroelectric power system, and excitation generator generally has special excitation system to generator
Rotor provides exciting current, then excitation field is generated in generator by exciting current, and the generator of excitation-type is sent out in waterpower
For application percentage in electric system 80% or more, but there is following aspect in the electricity generation system of current this excitation-type in use
Problem:
1, when dry season water level is lower, the percussion of water flow is weak, so that the rotation speed of alternator shaft is small, and excitation
The exciting current value that system is provided to the rotor of generator is certain, defeated through generator at this time according to the Computing Principle of induced potential
Electric energy out will be smaller, and the electric energy of generator output could charge to power grid after wanting rectified transformation, and rectifier and change
There are more electric elements, such as diode, IGBT in depressor, and diode needs to be added in the electricity at its both ends in use
Pressure, which is greater than certain value, can just be connected i.e. cut-in voltage, therefore when the electric energy of generator output is smaller, which will be insufficient
To be output at power grid, the waste of the part electric energy is resulted in.
2, when the flood tide phase, water level was higher, water impact active force is strong, and the rotation speed of alternator shaft is big, at this time through sending out
The electric energy of motor output is also larger, when charging after the rectified device of the big electric energy and transformer to power grid, in order to avoid electricity
The breakdown of device element can only use powerful electric elements, this will increase the use cost of entire electricity generation system.
3, since the flow velocity of water flow can not be controlled accurately, the electric energy that this will lead to generator output is unstable, for a long time
So power grid can be caused to impact.
Summary of the invention
In view of the above shortcomings of the prior art, the technical problem to be solved by the present invention is how to provide one kind in dry season
Biggish electric energy can be exported to charge to power grid, at the same be also avoided that the flood tide phase export excessive electric energy there is exciting current
The water stream power generation system of self-regulating function.
In order to solve the above-mentioned technical problem, present invention employs the following technical solutions:
Water stream power generation system with exciting current self-regulating function including the rotary shaft being arranged perpendicular to water (flow) direction and is arranged
Circumferentially uniformly distributed multiple water-poking sheets in the rotary shaft, one end of the rotary shaft are equipped with connect cover, set in the connect cover
There is accommodating chamber, the rotary shaft connect with the connect cover and protrudes into the accommodating chamber, also solid in the accommodating chamber
Surely power generation mechanism and regulating mechanism are connected with, the power generation mechanism includes that synchronous generator and providing for the synchronous generator is encouraged
The excitation system of magnetoelectricity stream, the excitation system include exciter, the side that the shaft of the synchronous generator is engaged by gear
Formula and the rotation axis connection, the regulating mechanism includes slide rheostat, the exciter, the slide rheostat and described
Synchronous generator is sequentially connected by wire and is formed energized circuit, and the slide plate of the slide rheostat is located at the rotary shaft institute
There is the smallest resistance value at the end at end, the end that the rotary shaft protrudes into the accommodating chamber is additionally provided with lateral silk
Thick stick is connected on the lead screw and forms lead screw pair with the lead screw and can be along the slide rheostat when the lead screw rotates
The mobile mobile bar of direction, the mobile bar are connect by tension spring with the end face of the rotary shaft, the mobile bar it is upper
Side is also connected with the first lateral push rod, and first push rod is connect with the slide plate of the slide rheostat, and the tension spring is certainly
The slide plate of the slide rheostat is located at the smallest position of resistance value when by state, further includes that the rotary shaft two sides are arranged in
Installing mechanism, the installing mechanism include that the pedestal for being fixed on water flow bottom and lower end are fixed on bracket on the pedestal, institute
The pedestal upper end for stating connect cover side is connect with the connect cover, the pedestal upper end of the connect cover other side with it is described
Rotate axis connection.
In this way, entire water stream power generation system is fixed in installing mechanism, when being generated electricity, water flow is rushed in water-poking sheet
On, water-poking sheet rotation drives rotary shaft rotation, drives synchronous generator in such a way that gear engages again while rotary shaft rotates
The shaft of machine rotates, while the shaft of synchronous generator rotates under the collective effect for the exciting current that excitation system provides,
Synchronous generator exports electric energy, realizes power generation.
When dry season, active force of the flow action on water-poking sheet is smaller, and the rotation speed of rotary shaft is smaller at this time, together
Rotation speed of the shaft of step generator under the drive of rotary shaft is also smaller, then mobile bar overcomes the active force of tension spring in lead screw
On movement speed it is slower, the speed that the first push rod drives the slide plate of slide rheostat mobile is also slow, and slide rheostat access is encouraged
Resistance value in magnetic loop is constantly in lesser range, then at this time the resistance value in the exciting current circuit where synchronous generator compared with
It is small, so that synchronous generator function obtains biggish exciting current, biggish excitation field is generated in synchronous generator, according to
The calculation formula of induced potential:E=BLvsinθ；
Wherein:BForMagnetic induction intensity、LInduction coil length,vCutting speed andθForvWithBAngle between direction；
Although the shaft rotation speed of synchronous generator is small at this time, excitation field is larger at this time causes magnetic induction intensity larger,
So when the induced potential that is generated in synchronous generator it is also larger, the electric current for the synchronized generator output that induced potential generates
Also larger, so that realizing can also have larger current output to the purpose of grid charging when dry season, bourn acting force was smaller.
When the flood tide phase, active force of the flow action on water-poking sheet is larger, and the rotation speed of rotary shaft is larger at this time, together
Rotation speed of the shaft of step generator under the drive of rotary shaft is also larger, then mobile bar overcomes the active force of tension spring in lead screw
On movement speed it is very fast, the speed that the first push rod drives the slide plate of slide rheostat mobile is also fast, and slide rheostat access is encouraged
Resistance value in magnetic loop will be in biggish range, then at this time the resistance value in the exciting current circuit where synchronous generator compared with
Greatly, so that synchronous generator function obtains lesser exciting current, lesser excitation field is generated in synchronous generator, according to
The calculation formula of induced potential:E=BLvsinθ；
Wherein:BForMagnetic induction intensity、LInduction coil length,vCutting speed andθForvWithBAngle between direction；
Although the shaft rotation speed of synchronous generator is big at this time, excitation field is smaller at this time causes magnetic induction intensity smaller,
So when the induced potential that is generated in synchronous generator it is also smaller, the electric current for the synchronized generator output that induced potential generates
Will not be excessive, cause electric elements to hit to realize and there will not be super-high-current output when the flood tide phase, bourn acting force was larger
The purpose worn.
The beneficial effects of the present invention are:
1, water stream power generation system of the invention in actual use, can automatically be adjusted defeated according to the size of bourn acting force
The size of the exciting current of synchronous generator is arrived out, so that the size of the excitation field in synchronous generator is automatically adjusted, according to
The production principle of induced potential can generate the relatively more similar induced potential of size, so that together in synchronous generator in this way
Step generator exports similar Current on Grid always and charges, and avoids the impact to power grid, while avoiding water flow work
It is firmly too small that charging and the excessive damage caused by electric elements of bourn acting force can not be carried out power grid.
2, this electricity generation system is when dry season, bourn acting force was smaller, by the resistance for reducing slide rheostat in energized circuit
Value is output to the exciting current of synchronous generator to increase, so that biggish excitation field is generated in synchronous generator,
And then generate biggish Current on Grid and charge, avoid bourn acting force it is too small when output electric current it is too small caused by charging
The problem of system can not be connected, so that effectively electric energy pair also can be converted by the mechanical energy of water flow when bourn acting force is smaller
Power grid charges, and effectively raises hydroelectric generated energy.
3, this electricity generation system is reduced when bourn acting force is larger by slide rheostat resistance value in increase energized circuit
It is output to the exciting current of synchronous generator, so that generating lesser excitation field in synchronous generator, and then will not
Excessive Current on Grid is generated to charge, avoid bourn acting force it is excessive when output electric current is excessive causes to electric elements
Damage, do not need the operating cost that whole system greatly reduces using powerful electric elements yet.
Preferably, the second lateral push rod, the row of offering in second connect cover are additionally provided on the downside of the mobile bar
Stomata, the gas vent includes lateral first row stomata and the second row stomata that is connected with the first row stomata, described
Second push rod is protruded into the first row stomata and can be moved back and forth in the first row stomata.
Since the electric elements in power generation mechanism and regulating mechanism can generate a large amount of heat at work, in this way, when rotation
When shaft shaft rotary electrification of the rotation with engine alternator, mobile bar will drive the second push rod in first row stomata to the
Two gas vent directions are mobile so that the air in gas vent with certain speed through being discharged at second row stomata, from second
The air with certain speed being discharged at gas vent can be used for radiating to power generation mechanism and regulating mechanism.
Preferably, the exhaust outlet of the second row stomata is described between the power generation mechanism and the regulating mechanism
The exhaust outlet of second row stomata is along airflow direction in the reduced pyramidal structure that is open.
In this way, the exhaust outlet of second row stomata is arranged between power generation mechanism and regulating mechanism, the air being discharged in this way
It can radiate simultaneously to power generation mechanism and regulating mechanism, while the exhaust outlet of second row stomata being arranged to out along airflow direction
Mouthful pyramidal structure reduced, in this way, can air be assembled and be added when exhaust ports of the air Jing Guo the pyramidal structure
Speed, so that the air of exhaust ports discharge can be arranged between the slave power generation mechanism concentrated with higher speed and regulating mechanism
Out, to improve the heat dissipation effect to power generation mechanism and regulating mechanism.
Preferably, the installing mechanism further includes guide tube and float, the lower end of the guide tube protrude into the pedestal and with institute
It states pedestal to be fixedly connected, the part that the guide tube stretches out the pedestal offers vertical moving hole, and the float passes through described
Moving hole and can the moving hole described in flow action lower edge move up and down, the upside that the guide tube opens up the moving hole is also opened
Equipped with vertical pilot hole, the lower end of the pilot hole is connected with the moving hole, and the lower end of the bracket passes through described lead
It is fixedly connected to hole and extending into the moving hole with the float.
In this way, float can be moved up and down according to the height change of water flow along moving hole, to drive the branch connecting with float
Frame is moved up and down along pilot hole, so that electricity generation system can be adjusted position according to the height of water flow, ensure that water flow
Always it can effectively impact on water-poking sheet, ensure that generating efficiency.
Preferably, the rotary shaft is equipped with first gear, and the shaft of the synchronous generator is equipped with and described first
The gear ratio of the second gear of gear engagement, the first gear and the second gear is greater than 5.
In this way, the shaft of rotary shaft and synchronous generator is attached by gear, and first gear and the second tooth
The gear ratio of wheel is greater than 5, in this way, the shaft of synchronous generator and the rotating ratio of rotary shaft will be greater than 5, thus synchronous generator
Shaft can be rotated with higher speed, further increase the electricity of synchronous generator sending.
Preferably, multiple grooves, shape between the two neighboring groove are offered on the outer profile of second connect cover
At the radiating ribs that can increase the second connect cover heat dissipation area.
Since the electric elements of power generation mechanism and regulating mechanism can generate a large amount of heat at work, and these heats are big
Part can be transmitted in the second connect cover, if the distributing not in time of the heat in the second connect cover, it will so that power generation mechanism
It is increased with the temperature of regulating mechanism working environment, it is serious that electric elements therein can be made to burn, in this way, by the second connection
Multiple grooves are opened up on the outer profile of cover, form radiating ribs using between two neighboring groove, so that the second connect cover
Outer profile and water flow have bigger contact area, and can faster heat be taken away by flowing through the water flow at the second connect cover, be kept away
Burning for electric elements caused by heat distributes not in time is exempted from.
Preferably, the angle between the same circumferentially uniformly distributed two neighboring water-poking sheet is 10-15 °.
In this way, water flow can be made larger to the impact dynamics of water-poking sheet so that water-poking sheet drive rotary shaft with compared with
It rotates at high speed, improves generated energy.
Detailed description of the invention
In order to keep the purposes, technical schemes and advantages of invention clearer, the present invention is made into one below in conjunction with attached drawing
The detailed description of step, in which:
Fig. 1 is the structural schematic diagram of the specific embodiment of the invention.
Description of symbols: rotary shaft 1, water-poking sheet 2, connect cover 3, second gear 4, synchronous generator 5, exciter 6,
First push rod 7, gas vent 8, slide rheostat 9, the second push rod 10, lead screw 11, mobile bar 12, bracket 13, guide tube 14, float
15, pedestal 16.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing.
As shown in Fig. 1, it with the water stream power generation system of exciting current self-regulating function, including is set perpendicular to water (flow) direction
The rotary shaft 1 set is equipped with connect cover 3 with multiple water-poking sheets 2 circumferentially uniformly distributed in rotary shaft 1, one end of rotary shaft 1 is set in, even
It connects and is equipped with accommodating chamber in cover 3, rotary shaft 1 connect with connect cover 3 and protrudes into accommodating chamber, is also fixedly connected in accommodating chamber
There are power generation mechanism and regulating mechanism, power generation mechanism includes synchronous generator 5 and provides the excitation of exciting current for synchronous generator 5
System, excitation system include exciter 6, and the shaft of synchronous generator 5 connect with rotary shaft 1 in such a way that gear engages, adjusts
Saving mechanism includes slide rheostat 9, and exciter 6, slide rheostat 9 and synchronous generator 5 are sequentially connected by wire and are formed
Energized circuit, the slide plate of slide rheostat 9 have the smallest resistance value when being located at the end at 1 place end of rotary shaft, and rotary shaft 1 is stretched
The end for entering accommodating chamber is additionally provided with lateral lead screw 11, is connected on lead screw 11 and forms 11 pair of lead screw with lead screw 11 and in lead screw
The end of tension spring and rotary shaft 1 can be passed through along the mobile bar 12 that 9 direction of slide rheostat moves, mobile bar 12 when 11 rotation
Face connection, the upside of mobile bar 12 are also connected with the first lateral push rod 7, and the slide plate of the first push rod 7 and slide rheostat 9 connects
It connects, the slide plate of slide rheostat 9 is located at the smallest position of resistance value when tension spring is free state, further includes being arranged in rotary shaft 1
The installing mechanism of two sides, installing mechanism include that the pedestal 16 for being fixed on water flow bottom and lower end are fixed on bracket on pedestal 16
13,13 upper end of bracket of connect cover side is connect with connect cover, and 13 upper end of bracket of the connect cover other side is connect with rotary shaft 1.
In this way, entire water stream power generation system is fixed in installing mechanism, when being generated electricity, water flow is rushed in water-poking sheet
On 2, the rotation of water-poking sheet 2 drives rotary shaft 1 to rotate, and drives synchronization in such a way that gear engages again while rotary shaft 1 rotates
The shaft of generator 5 rotates, the common work of the exciting current provided while the shaft of synchronous generator 5 rotates in excitation system
Under, synchronous generator 5 exports electric energy, realizes power generation.
When dry season, active force of the flow action on water-poking sheet 2 is smaller, and the rotation speed of rotary shaft 1 is smaller at this time,
Rotation speed of the shaft of synchronous generator 5 under the drive of rotary shaft 1 is also smaller, then mobile bar 12 overcomes the active force of tension spring
Movement speed on lead screw 11 is slower, and the speed that the first push rod 7 drives the slide plate of slide rheostat 9 mobile is also slow, and sliding becomes
The resistance value that resistance device 9 accesses in energized circuit is constantly in lesser range, then the exciting current where synchronous generator 5 at this time
The resistance value in circuit is smaller, so that synchronous generator 5 can obtain biggish exciting current, generates in synchronous generator 5 larger
Excitation field, according to the calculation formula of induced potential:E=BLvsinθ；
Wherein:BForMagnetic induction intensity、LInduction coil length,vCutting speed andθForvWithBAngle between direction；
Although the shaft rotation speed of synchronous generator 5 is small at this time, excitation field is larger at this time causes magnetic induction intensity larger,
So when the induced potential that is generated in synchronous generator 5 it is also larger, the electricity that the synchronized generator 5 that induced potential generates exports
Stream is also larger, so that realizing can also have larger current output to the purpose of grid charging when dry season, bourn acting force was smaller.
When the flood tide phase, active force of the flow action on water-poking sheet 2 is larger, and the rotation speed of rotary shaft 1 is larger at this time,
Rotation speed of the shaft of synchronous generator 5 under the drive of rotary shaft 1 is also larger, then mobile bar 12 overcomes the active force of tension spring
Movement speed on lead screw 11 is very fast, and the speed that the first push rod 7 drives the slide plate of slide rheostat 9 mobile is also fast, and sliding becomes
Biggish range will be in by hindering the resistance value that device 9 accesses in energized circuit, then the exciting current where synchronous generator 5 returns at this time
The resistance value on road is larger, so that synchronous generator 5 can obtain lesser exciting current, generates in synchronous generator 5 lesser
Excitation field, according to the calculation formula of induced potential:E=BLvsinθ；
Wherein:BForMagnetic induction intensity、LInduction coil length,vCutting speed andθForvWithBAngle between direction；
Although the shaft rotation speed of synchronous generator 5 is big at this time, excitation field is smaller at this time causes magnetic induction intensity smaller,
So when the induced potential that is generated in synchronous generator 5 it is also smaller, the electricity that the synchronized generator 5 that induced potential generates exports
Stream will not be excessive, leads to electric elements to realize and there will not be super-high-current output when the flood tide phase, bourn acting force was larger
The purpose of breakdown.
Water stream power generation system of the invention in actual use, can automatically be adjusted according to the size of bourn acting force
It is output to the size of the exciting current of synchronous generator 5, so that the size of the excitation field in synchronous generator 5 is automatically adjusted,
According to the production principle of induced potential, the relatively more similar induced potential of size can be generated in synchronous generator 5 in this way, and then make
Synchronous generator 5 export always similar in Current on Grid charge, avoid the impact to power grid, while avoiding water
Stream active force is too small can not to carry out charging and the excessive damage caused by electric elements of bourn acting force power grid.
This electricity generation system is when dry season, bourn acting force was smaller, by the resistance value for reducing energized circuit slide rheostat 9
Increase the exciting current for being output to synchronous generator 5, so that biggish excitation field is generated in synchronous generator 5,
And then generate biggish Current on Grid and charge, avoid bourn acting force it is too small when output electric current it is too small caused by charging
The problem of system can not be connected, so that effectively electric energy pair also can be converted by the mechanical energy of water flow when bourn acting force is smaller
Power grid charges, and effectively raises hydroelectric generated energy.
This electricity generation system is reduced when bourn acting force is larger by increasing the resistance value of energized circuit slide rheostat 9
It is output to the exciting current of synchronous generator 5, so that generating lesser excitation field in synchronous generator 5, and then not
Excessive Current on Grid can be generated to charge, avoid bourn acting force it is excessive when output electric current is excessive makes to electric elements
At damage, do not need the operating cost that whole system greatly reduces using powerful electric elements yet.
In the present embodiment, the downside of mobile bar 12 is additionally provided with the second lateral push rod 10, offers in the second connect cover
Gas vent 8, gas vent 8 include lateral first row stomata 8 and the second row stomata 8 being connected with first row stomata 8, and second pushes away
Bar 10 is protruded into first row stomata 8 and can be moved back and forth in first row stomata 8.
Since the electric elements in power generation mechanism and regulating mechanism can generate a large amount of heat at work, in this way, when rotation
When shaft 1 rotates the shaft rotary electrification with engine alternator 5, mobile bar 12 will drive the second push rod 10 in first row stomata
It is mobile to 8 direction of second row stomata in 8, so that the air in gas vent 8 is with certain speed through arranging at second row stomata 8
Out, the air with certain speed being discharged from second row stomata 8 can be used for radiating to power generation mechanism and regulating mechanism.
In the present embodiment, the exhaust outlet of second row stomata 8 is between power generation mechanism and regulating mechanism, second row stomata
8 exhaust outlet is along airflow direction in the reduced pyramidal structure that is open.
In this way, the exhaust outlet of second row stomata 8 is arranged between power generation mechanism and regulating mechanism, the air being discharged in this way
It can radiate simultaneously to power generation mechanism and regulating mechanism, while the exhaust outlet of second row stomata 8 being arranged to along airflow direction
Be open reduced pyramidal structure, in this way, can air be assembled and be added when exhaust ports of the air Jing Guo the pyramidal structure
Speed, so that the air of exhaust ports discharge can be arranged between the slave power generation mechanism concentrated with higher speed and regulating mechanism
Out, to improve the heat dissipation effect to power generation mechanism and regulating mechanism.
In the present embodiment, installing mechanism further includes guide tube 14 and float 15, the lower end of guide tube 14 protrude into pedestal 16 and with
Pedestal 16 is fixedly connected, and the part that guide tube 14 stretches out pedestal 16 offers vertical moving hole, and float 15 passes through moving hole and energy
Enough to move up and down under flow action along moving hole, guide tube 14, which opens up, is also provided with vertical pilot hole on the upside of moving hole, lead
It is connected to the lower end in hole with moving hole, the lower end of bracket 13 passes through pilot hole and extend into moving hole and the fixed company of float 15
It connects.
In this way, float 15 can be moved up and down according to the height change of water flow along moving hole, it is connect to drive with float 15
Bracket 13 moved up and down along pilot hole, so that electricity generation system can be adjusted position according to the height of water flow, guarantee
Water flow always can effectively impact on water-poking sheet 2, ensure that generating efficiency.
In the present embodiment, rotary shaft 1 is equipped with first gear, and the shaft of synchronous generator 5 is equipped with and first gear
The gear ratio of the second gear 4 of engagement, first gear and second gear 4 is greater than 5.
In this way, rotary shaft 1 and the shaft of synchronous generator 5 are attached by gear, and first gear and second
The gear ratio of gear 4 is greater than 5, in this way, the rotating ratio of the shaft of synchronous generator 5 and rotary shaft 1 will be greater than 5, thus synchronous hair
The shaft of motor 5 can be rotated with higher speed, further increase the electricity of the sending of synchronous generator 5.
In the present embodiment, multiple grooves are offered on the outer profile of the second connect cover, are formed between two neighboring groove
The radiating ribs of the second connect cover heat dissipation area can be increased.
Since the electric elements of power generation mechanism and regulating mechanism can generate a large amount of heat at work, and these heats are big
Part can be transmitted in the second connect cover, if the distributing not in time of the heat in the second connect cover, it will so that power generation mechanism
It is increased with the temperature of regulating mechanism working environment, it is serious that electric elements therein can be made to burn, in this way, by the second connection
Multiple grooves are opened up on the outer profile of cover, form radiating ribs using between two neighboring groove, so that the second connect cover
Outer profile and water flow have bigger contact area, and can faster heat be taken away by flowing through the water flow at the second connect cover, be kept away
Burning for electric elements caused by heat distributes not in time is exempted from.
In the present embodiment, the angle between same circumferentially uniformly distributed two neighboring water-poking sheet 2 is 10-15 °.
In this way, water flow can be made larger to the impact dynamics of water-poking sheet 2 so that water-poking sheet 2 drive rotary shaft 1 with
Fair speed rotation, improves generated energy.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to excellent
Embodiment is selected to describe the invention in detail, those skilled in the art should understand that, it can be to of the invention
Technical solution is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered
In scope of the presently claimed invention.
Claims (7)
1. the water stream power generation system with exciting current self-regulating function, which is characterized in that including being arranged perpendicular to water (flow) direction
Rotary shaft and be set in multiple water-poking sheets circumferentially uniformly distributed in the rotary shaft, one end of the rotary shaft is equipped with connect cover,
Accommodating chamber is equipped in the connect cover, the rotary shaft connect with the connect cover and protrudes into the accommodating chamber, described
Power generation mechanism and regulating mechanism are also fixedly connected in accommodating chamber, the power generation mechanism includes synchronous generator and is described same
It walks generator and the excitation system of exciting current is provided, the excitation system includes exciter, and the shaft of the synchronous generator is logical
The mode and the rotation axis connection of gear engagement are crossed, the regulating mechanism includes slide rheostat, the exciter, the cunning
Dynamic rheostat and the synchronous generator are sequentially connected by wire and are formed energized circuit, the slide plate position of the slide rheostat
There is the smallest resistance value where the rotary shaft, the rotary shaft protrudes into the end of the accommodating chamber also when the end at end
Equipped with lateral lead screw, it is connected on the lead screw and forms lead screw pair with the lead screw and can be along institute when the lead screw rotates
The mobile mobile bar of slide rheostat direction is stated, the mobile bar is connect by tension spring with the end face of the rotary shaft, institute
It states and is also connected with the first lateral push rod on the upside of mobile bar, first push rod is connect with the slide plate of the slide rheostat,
The slide plate of the slide rheostat is located at the smallest position of resistance value when the tension spring is free state, further includes setting described
The installing mechanism of rotary shaft two sides, the installing mechanism include that the pedestal for being fixed on water flow bottom and lower end are fixed on the pedestal
On bracket, the pedestal upper end of the connect cover side connect with the connect cover, the branch of the connect cover other side
Frame upper end and the rotation axis connection.
2. as described in claim 1 with the water stream power generation system of exciting current self-regulating function, which is characterized in that the shifting
It is additionally provided with the second lateral push rod on the downside of lever, gas vent is offered in second connect cover, the gas vent includes cross
To first row stomata and the second row stomata that is connected with the first row stomata, second push rod protrude into the first row
It can move back and forth in stomata and in the first row stomata.
3. as claimed in claim 2 with the water stream power generation system of exciting current self-regulating function, which is characterized in that described the
The exhaust outlet of two gas vents is between the power generation mechanism and the regulating mechanism, and the exhaust outlet of the second row stomata is along gas
Direction is flowed in the reduced pyramidal structure that is open.
4. as described in claim 1 with the water stream power generation system of exciting current self-regulating function, which is characterized in that the peace
Mounting mechanism further includes guide tube and float, and the lower end of the guide tube is protruded into the pedestal and is fixedly connected with the pedestal, described to lead
The part that cylinder stretches out the pedestal offers vertical moving hole, and the float passes through the moving hole and can be in flow action
Moving hole described in lower edge moves up and down, and the guide tube opens up and is also provided with vertical pilot hole on the upside of the moving hole, described
The lower end of pilot hole is connected with the moving hole, and the lower end of the bracket passes through the pilot hole and extend into the moving hole
It is interior to be fixedly connected with the float.
5. as described in claim 1 with the water stream power generation system of exciting current self-regulating function, which is characterized in that the rotation
Shaft is equipped with first gear, and the shaft of the synchronous generator is equipped with the second gear engaged with the first gear, institute
The gear ratio for stating first gear and the second gear is greater than 5.
6. as described in claim 1 with the water stream power generation system of exciting current self-regulating function, which is characterized in that described the
Multiple grooves are offered on the outer profile of two connect covers, second connection can be increased by being formed between the two neighboring groove
The radiating ribs of cover heat dissipation area.
7. as described in claim 1 with the water stream power generation system of exciting current self-regulating function, which is characterized in that same week
It is 10-15 ° to the angle between the uniformly distributed two neighboring water-poking sheet.
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| CN201910440616.3A CN110056465B (en) | 2019-05-24 | 2019-05-24 | Water flow power generation system with excitation current self-regulating function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910440616.3A CN110056465B (en) | 2019-05-24 | 2019-05-24 | Water flow power generation system with excitation current self-regulating function |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB622192A (en) * | 1944-11-16 | 1949-04-28 | British Thomson Houston Co Ltd | Improvements in and relating to slip regulators for motor generator sets |
| JP2001298996A (en) * | 2000-04-17 | 2001-10-26 | Hitachi Electric Systems Ltd | Automatic voltage regulation device for synchronous generator |
| CN103516273A (en) * | 2012-06-16 | 2014-01-15 | 丁士来 | Method for adjusting output power of synchronous generator |
| CN104836404A (en) * | 2015-05-25 | 2015-08-12 | 湖南零陵恒远发电设备有限公司 | Dual-feed exciter and work method thereof |
-
2019
- 2019-05-24 CN CN201910440616.3A patent/CN110056465B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB622192A (en) * | 1944-11-16 | 1949-04-28 | British Thomson Houston Co Ltd | Improvements in and relating to slip regulators for motor generator sets |
| JP2001298996A (en) * | 2000-04-17 | 2001-10-26 | Hitachi Electric Systems Ltd | Automatic voltage regulation device for synchronous generator |
| CN103516273A (en) * | 2012-06-16 | 2014-01-15 | 丁士来 | Method for adjusting output power of synchronous generator |
| CN104836404A (en) * | 2015-05-25 | 2015-08-12 | 湖南零陵恒远发电设备有限公司 | Dual-feed exciter and work method thereof |
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| CN110056465B (en) | 2024-01-26 |
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