CN201794993U - Mechanical type rotational speed control device and wind power generation equipment - Google Patents
Mechanical type rotational speed control device and wind power generation equipment Download PDFInfo
- Publication number
- CN201794993U CN201794993U CN2010205202350U CN201020520235U CN201794993U CN 201794993 U CN201794993 U CN 201794993U CN 2010205202350 U CN2010205202350 U CN 2010205202350U CN 201020520235 U CN201020520235 U CN 201020520235U CN 201794993 U CN201794993 U CN 201794993U
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- rotary member
- generator
- wind
- speed control
- control device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- 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
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Abstract
The utility model provides a mechanical type rotational speed control device and wind power generation equipment. The wind power generation equipment comprises a wind wheel, a generator and an energy storage device, wherein the wind wheel can receive wind energy and rotate; the generator is provided with an input rotating shaft which can be driven to rotate by the kinetic energy from the wind wheel; and the energy storage device is positioned between the wind wheel and the generator so as to ensure that the input rotating shaft of the generator obtains steady rotational speed input. A rotational speed control device is arranged between the generator and the energy storage device and comprises a first rotating member and a second rotating member, wherein the first rotating member can be connected with a motor and driven by the motor to rotate at a desired speed; and the second rotating member is meshed with the first rotating member and is connected with the input rotating shaft of the generator. Compared with the conventional wind power generation equipment which realizes constant speed and constant frequency output by using power electronic equipment, the wind power generation equipment of the utility model can realize constant speed and constant frequency output at lower cost.
Description
Technical field
The utility model relates to the mechanical type revolution speed control device and has the wind power plant of this mechanical type revolution speed control device.
Background technique
Because fossil energy is deficient day by day and remarkable day by day to the influence of environment generation, countries in the world are all at the various clean energy resourcies of active development.Wind energy has received the more and more stronger concern of people as one of most important clean energy resource, and share shared in human field of energy utilization is increasing.
The mode of utilizing to wind energy mainly is to utilize wind power plant that wind energy is converted to electric energy.Along with the appearance of high-power wind-driven generator and the construction of large-scale wind generating field, just progressively commercialization of the utilization of wind energy.The business-like a kind of Basic Ways of wind energy is that wind-powered electricity generation is incorporated in the municipal electrical network.Because the wind of wind field is unsettled, cuts in and out, and is suddenly big or suddenly small, such electric energy that produces can't network access, and therefore, existing wind power plant is equipped with energy storage device etc., to obtain stable rotation output.At present, general a kind of constant-speed and constant-frequency of Cai Yonging mode that is incorporated into the power networks, promptly the rotating speed of wind-driven generator does not change with the fluctuation of wind speed, keeps permanent rotation speed operation all the time, thereby exports the Ac of constant rated frequency.
Yet in practice, the quality of power supply that is obtained still can not be satisfactory.For example, municipal electrical network requires the frequency of networking Ac at 49.8～50Hz, and the power frequency of wind power plant output at present is 48～52Hz, can not mate with electrical network well.And, existing wind power plant for the power electronic equipment structural load that realizes constant-speed and constant-frequency and be equipped with, cost an arm and a leg, increased the cost of wind-driven generator and the cost of wind field operation.
The model utility content
Correspondingly, the purpose of this utility model provides a kind of revolution speed control device, and it can obtain constant rotating speed output with simple structure, need not the power electronic equipment of complexity, costliness.
According to an aspect of the present utility model, the utility model provides a kind of revolution speed control device, comprising: first rotary member can link to each other with motor and rotate to press desired speed under motoring; Second rotary member also can be fixed on plan with described first rotary member engagement and carry out in the rotating shaft of rotating speed control.
Described first rotary member can be a worm screw, and described second rotary member can be a worm gear.
Described first rotary member and described second device are pitch wheels.
According to another aspect of the present utility model, the utility model provides a kind of wind power plant, comprising: wind wheel can receive wind energy and rotates; Generator has the input rotating shaft that can rotate under the kinetic energy from wind wheel; Energy storage device, between described wind wheel and described generator, make described generator input rotating shaft obtain the stable rotating speed input, it is characterized in that, between described generator and described energy storage device, be provided with revolution speed control device, described revolution speed control device comprises: first rotary member can link to each other with motor and rotate to press desired speed under motoring; Second rotary member links to each other with described first rotary member engagement and with described generator input rotating shaft.
Description of drawings
Fig. 1 is the schematic block diagram according to the wind power plant of a kind of mode of execution of the utility model.
Fig. 2 is the schematic cross sectional views according to the energy storage device of a kind of mode of execution of the utility model.
Fig. 3 is the schematic cross sectional views according to the revolution speed control device of a kind of mode of execution of the utility model.
Embodiment
Embodiment of the present utility model is described with reference to the accompanying drawings.
Fig. 1 is the block diagram according to the power generating equipment of a preferred implementation of the utility model.Wind power plant comprises wind wheel 1, and wind wheel 1 rotates under the effect of wind-force, and wind-force is converted to the rotation of wind wheel rotating shaft 11.The rotation of wind wheel rotating shaft 11 through transmission system for example speed reducer 2 pass to generator 5 through output terminal 12, generator 5 is converted to electric energy with wind energy.Because wind-force is unsettled, so, between wind wheel 1 and generator 5, needing to be provided with energy storage device 3, the output revolving shaft 13 of energy storage device 3 links with the input rotating shaft 14 of generator 5, for generator 5 provides the input of the rotating speed after stablizing.
Wind wheel, speed reducer, energy storage device and generator all are that related domain is known, and those skilled in the art can require to adopt suitable known technology according to specific design.
Fig. 2 shows a kind of energy storage device that combines the differential drive function, comprises first semiaxis 31, second semiaxis 33 and housing 37.First semiaxis 31 links to each other with the output terminal 12 of speed reducer 2, is used for the power that receives from wind wheel 1 from speed reducer 2.Second semiaxis 33 is as the part of output revolving shaft 13 or output revolving shaft 13.Output revolving shaft 13 links to each other with the input shaft 14 of generator 5, is used for transmitting power to generator 5.First angular wheel 32 that energy storage device 3 also comprises and first semiaxis 31 is integrally formed, and integrally formed second angular wheel 34 of second semiaxis 33, between first, second angular wheel 32,34 and simultaneously and a plurality of planetary pinions 35 of this two angular wheels engagements and the planetary carrier 36 that supports these planetary pinions 35.Wherein, housing 37 surrounds above-mentioned member and integrally formed with planetary carrier 36.Wherein, housing 37 has constituted a reel, the long rope 62 that can for example form with wire rope or any other suitable material, and the one end is fixed on the housing 37, and the other end is fixed on the weight 61.When long rope 62 was wrapped on housing 37 outer surfaces along with the rotation of housing 37, weight 61 was raised, thereby the kinetic energy of housing 37 is converted into the potential energy of weight 61.Certainly, it will be understood by those skilled in the art that weight 61 can also be suspended on the housing by various forms of sheave block.Sheave block can be fixed on the pylon of wind power plant, perhaps, is fixed on for example portal frame of other installing.The quality of weight and the length of long rope can be carried out concrete design according to the concrete designing requirement and the situation of local wind field.Mode as an alternative, housing 37 can drive various forms of energy storage members such as flywheel, torque spring or air compressor, it will also be appreciated that being used for driving suction engine carries out retaining.The structure that this energy storage and differential drive are combined as a whole was authorized in No. the 200920179109.0th, the Chinese utility model patent of Gao Zehang on August 4th, 2010, described in detail.This part related content in the document comprises in this application by reference.
Art technology is appreciated that, also can omit the above-mentioned structure relevant with differential drive, and traditional energy-storage function structures such as weight, flywheel, torsion spring, air compressor and water pump are combined with the output terminal 12 of speed reducer 2, thereby provide stable rotating speed output at output terminal 12 places.
Require needed constant rotational speed for input rotating shaft 14 places at generator 5 obtain to mate exactly municipal electrical network networking, the utility model is provided with a kind of mechanical type revolution speed control device 4 between generator 5 and energy storage device 3.
Fig. 3 shows the mechanical type revolution speed control device 4 according to a mode of execution of the utility model.Mechanical type revolution speed control device 4 comprises worm gear 42 and worm screw 41.Worm screw 41 can link to each other with a motor (not shown), under the driving of motor, with predetermined rotational speed, is first rotary member of the present utility model.Worm gear 42 and worm screw 41 engagements, and can be fixed in the input rotating shaft 14 of generator, input rotating shaft 14 links to each other with the output revolving shaft 13 of energy storage device 3, receives the rotating speed after stablizing, and is second rotary member of the present utility model.
According to the velocity ratio between the specific requirement of intending being connected to the grid and two rotary members, worm screw 41 can have different desired speeds under the driving of motor.
In mode of execution shown in Figure 3, worm gear 42 combines by key 43 and generator input shaft 14.In other embodiments, worm gear 42 can be one with generator input shaft 14.
According to another mode of execution of the present utility model, worm and gear can substitute with the gear of pair of meshing.According to another mode of execution of the present utility model, second rotary member (worm gear or gear) can be fixed on the output revolving shaft 13 of energy storage device 3.Therefore, in the utility model, second rotary member links to each other with the input rotating shaft of generator, comprises in the input rotating shaft that is fixed to generator directly or indirectly.
Below, 1-3 describes working procedure of the present utility model in conjunction with the accompanying drawings.In wind field, when wind-force reaches intended level, the gentle breeze of 3 meters of per seconds for example, wind wheel 1 begins to rotate, the rotation of wind wheel rotating shaft 11 passes to first semiaxis 31 of energy storage device 3 by the output terminal 12 of speed reducer 2, first semiaxis 31 drives the first integrally formed with it angular wheel 32 and rotates, and the rotating speed after second semiaxis 33 will be stablized is passed to the input rotating shaft 14 of generator 5 then.
When the rotating speed coupling (promptly meeting worm gear transmission ratio) behind the desired speed of worm screw 41 and energy storage device 3 inputs stable, worm screw 41 is close to idle running.
When the rotating speed behind rotating ratio energy storage device 3 input of the pairing worm gear 42 of the desired speed of worm screw 41 stable was big, the output revolving shaft 13 resulting unnecessary kinetic energy of energy storage device 3 passed to energy storage device 3, were absorbed by wherein energy storage member.
Rotating speed behind rotating ratio energy storage device 3 input of the pairing worm gear 42 of the desired speed of worm screw 41 stable hour, worm and gear produces braking force to the output revolving shaft 13 of energy storage device 3, this braking force causes energy storage device 3 to pass to energy storage device 3 at the unnecessary kinetic energy that input end (the perhaps output terminal of speed reducer 2) place obtains, by energy storage member absorption wherein.
With the energy storage device with differential function shown in Figure 23 is example.No matter be that torque on first semiaxis 31 (input end) or second semiaxis 33 (output terminal) increases, planetary pinion 35 is revolved round the sun, weight 61 is raised, and the realization energy storage.Act on energy storage member on the output terminal 12 of speed reducer 2 and directly absorb excess energy from revolution speed control device 14 and speed reducer 2.
As mentioned above, by being provided with between energy storage device and generator according to mechanical type revolution speed control device of the present utility model, the input rotating shaft of generator can obtain to incorporate into required accurate rotating speed.And, constitute by rotary members such as worm and gear or gears according to mechanical type revolution speed control device of the present utility model, with present use be used for realize that the power electronic equipment of constant-speed and constant-frequency compares, its cost is much smaller.
With reference to accompanying drawing the utility model has been carried out concrete description above.But, it should be appreciated by those skilled in the art that top specific descriptions only are the character of giving an example, be used for illustrative purpose, be not to be to be used for limiting protection domain of the present utility model.Have benefited from instruction of the present utility model; those skilled in the art can make various modification, modification or replacement to above-mentioned specifically described mode of execution as the case may be under the situation that does not exceed the utility model protection domain, these modification, modification or replacement fall into protection domain of the present utility model.
Claims (6)
1. a mechanical type revolution speed control device is characterized in that, comprising:
First rotary member, described first rotary member can link to each other with motor and rotate to press desired speed under motoring; With
Second rotary member, described second rotary member and the engagement of described first rotary member also can be fixed on to be intended carrying out in the rotating shaft of rotating speed control.
2. revolution speed control device as claimed in claim 1 is characterized in that, described first rotary member is a worm screw, and described second rotary member is a worm gear.
3. revolution speed control device as claimed in claim 1 is characterized in that, described first rotary member and described second rotary member are pitch wheels.
4. wind power plant comprises:
Wind wheel can receive wind energy and rotates;
Generator has the input rotating shaft that can rotate under the kinetic energy from wind wheel;
Energy storage device makes described generator input rotating shaft obtain the stable rotating speed input between described wind wheel and described generator,
It is characterized in that be provided with revolution speed control device between described generator and described energy storage device, described revolution speed control device comprises:
First rotary member, described first rotary member can link to each other with motor and rotate to press desired speed under motoring,
Second rotary member, described second rotary member links to each other with described first rotary member engagement and with described generator input rotating shaft.
5. wind power plant as claimed in claim 4 is characterized in that, described first rotary member is a worm screw, and described second rotary member is a worm gear.
6. wind power plant as claimed in claim 4 is characterized in that, described first rotary member and described second rotary member are pitch wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205202350U CN201794993U (en) | 2010-09-06 | 2010-09-06 | Mechanical type rotational speed control device and wind power generation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205202350U CN201794993U (en) | 2010-09-06 | 2010-09-06 | Mechanical type rotational speed control device and wind power generation equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201794993U true CN201794993U (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205202350U Expired - Fee Related CN201794993U (en) | 2010-09-06 | 2010-09-06 | Mechanical type rotational speed control device and wind power generation equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201794993U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012031547A1 (en) * | 2010-09-06 | 2012-03-15 | Gao Zehang | Mechanical rotary speed control device and wind power generation apparatus |
| US10581249B2 (en) | 2017-11-14 | 2020-03-03 | Inventus Holdings, Llc | Battery energy storage system integrated with electrical generation site |
-
2010
- 2010-09-06 CN CN2010205202350U patent/CN201794993U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012031547A1 (en) * | 2010-09-06 | 2012-03-15 | Gao Zehang | Mechanical rotary speed control device and wind power generation apparatus |
| CN102386830A (en) * | 2010-09-06 | 2012-03-21 | 高则行 | Mechanical rotating speed control device and wind power generating equipment |
| US10581249B2 (en) | 2017-11-14 | 2020-03-03 | Inventus Holdings, Llc | Battery energy storage system integrated with electrical generation site |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20150906 |
|
| EXPY | Termination of patent right or utility model |