CN203384302U - Constant-speed drive device for electricity generation of wind machine and fuel engine - Google Patents
Constant-speed drive device for electricity generation of wind machine and fuel engine Download PDFInfo
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- CN203384302U CN203384302U CN201320513912.XU CN201320513912U CN203384302U CN 203384302 U CN203384302 U CN 203384302U CN 201320513912 U CN201320513912 U CN 201320513912U CN 203384302 U CN203384302 U CN 203384302U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a constant-speed drive device for electricity generation of a wind machine and a fuel engine. The constant-speed drive device comprises a main differential mechanism, an auxiliary differential mechanism, a first turbine worm speed reducer with a self-locking function, a second turbine worm speed reducer without a self-locking function, a driving straight gear, a driven straight gear and a synchronous motor, wherein the driving straight gear is meshed with the driven straight gear. A first sun wheel of the main differential mechanism is connected with a variable working condition rotating shaft of an engine to serve as a driving wheel based on the principle of differential speed regulation of the differential mechanisms. The rotation speed of a second sun wheel is adjusted by utilizing the self-locking function of the first turbine worm speed reducer to achieve the function of constant planet carrier rotation speed transmission, the rotation speed of the turbine worm speed reducer with the self-locking function is limited by the auxiliary differential mechanism and the second turbine worm speed reducer without the self-locking function, the constant rotation speed of the synchronous motor enables the rotation speed of the second sun wheel of the main differential mechanism and the rotation speed of a fourth sun wheel of the auxiliary differential mechanism to be changed along with the rotation speed of the engine, the output of the main differential mechanism is the same as the rotation speed of the synchronous motor, and the purpose of constant transmission is achieved.
Description
Technical field
The utility model relates to a kind of constant speed output transmission, especially a kind of transmission device that is converted to constant speed driven gas heat pump output for the output of the gear by wind energy conversion system, engine fuel.
Background technique
In recent years, along with in world wide to the attention of environmental protection, Global Greenhouse Effect, each state all competitively development comprise wind energy renewable energy sources utilize technology, a kind of selection in the energy policy using wind energy as sustainable development.Wind energy, as one of most important clean energy resource, has received the more and more stronger concern of people, and share shared in mankind's field of energy utilization is increasing.Wind energy conversion system is limited by the impact of wind-force size, and rotating speed is for changing rotating speed, directly with after generator is connected, and the electric current of output, voltage, frequency
Due to fossil energy, increasingly to cure impact weary and that environment is produced day by day remarkable, and countries in the world are all at the various clean energy resourcies of active development.The mode of utilizing to wind energy is mainly to utilize wind-driven generator 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 municipal electrical network.Because the wind of wind field is unsettled, cut in and out, suddenly big or suddenly small, such produced electric energy can't network access.At present, what generally adopt is a kind of constant-speed and constant-frequency mode that is incorporated into the power networks, and the rotating speed of wind-driven generator does not change with the fluctuation of wind speed, maintains all the time permanent rotation speed operation, thereby exports the Ac of constant rated frequency.Yet the quality of power supply obtained in practice, still can not be satisfactory.For example, municipal electrical network requires the frequency of networking Ac at 49.8 one 50Hz, and the power frequency of wind-driven generator output at present is 48 1 52Hz, can not be well and the electrical network coupling, and exist can not be synchronous problem.Moreover existing wind-driven generator, for the power electronic equipment complex structure realizing constant-speed and constant-frequency and be equipped with, expensive, has increased the cost of wind-driven generator and the cost of wind field operation.Variation etc. parameter with rotating speed changes, and can not obtain constant output; Engine fuel is limited by the impact of working conditions change, and rotating speed is for changing rotating speed, and directly, with after generator is connected, the parameters such as the electric current of output, voltage, frequency change with the variation of rotating speed, can not obtain constant output.Comparatively advanced method is that the parameters such as the electric current of variation, voltage, frequency are obtained to constant electric current, voltage, frequency through cutting the associated electrical technology such as ripple rectification at present.Its defect is that rectification cuts ripple and loses a large amount of electric energy, and, along with the increase in wind energy conversion system, engine fuel rotation speed change interval, the electric energy of its loss increases thereupon, has reduced the efficiency of wind energy conversion system, engine fuel generating.
The generator set that Chinese utility model patent CN 201541175U natural force power generation equipment and generator set disclose a kind of natural force power generation equipment and be comprised of this power generating equipment, can realize the output that electric power continuous is stable with simple structure and cheap cost.Power generating equipment comprises the unidirectional transmission be connected with the natural force input end, the differential driver be connected with unidirectional transmission, the energy storage device be connected with differential driver and the speed limiting device between differential driver and generator.The 3rd working end that differential driver has the first working end be connected with unidirectional transmission, the second working end be connected with generator and is connected with energy storage device.
Chinese utility model patent CN 201794993 U disclose a kind of mechanical rotating speed control device and wind power plant.Wind power plant comprises: wind wheel can receive wind energy and rotate; Generator, have the input rotating shaft that can rotate under the kinetic energy from wind wheel; Energy storage device makes described generator input rotating shaft obtain stable rotating speed input between described wind wheel and described generator.Be provided with revolution speed control device between described generator and described energy storage device, described revolution speed control device comprises: the first rotary member can be connected with motor and rotate to press desired speed under motoring; The second rotary member, be connected with described the first rotary member engagement and with described generator input rotating shaft.Realize that with traditional power electronic equipment that utilizes the wind power plant of constant-speed and constant-frequency compares, the utility model can be realized constant-speed and constant-frequency output with cost still less.
Need to increase energy storage apparatus (as weight) between drive unit and generator in above-mentioned two kinds of prior aries, volume is large, and and high, cost is high, and is subject to the restriction of energy storage apparatus volume (length), and motor output speed adjustable extent is low.Be subject to windage, this design moves under high wind speed for a long time, is mainly used in fluctuations in wind speed very fast and around the situation of a certain fixing speed fluctuation.
Chinese utility model patent CN 201985678U discloses with frequency sync control device and wind-driven generator, and described same frequency is fixed in described cylinder with motor to be exported for providing with the rotation of described coaxial; And second rotary member, described the second rotary member is formed on described cylinder regularly, and is connected with described the first rotary member, to make described cylinder around described pivot axis under the driving at described the first rotary member.This model utility needs detection facility and automatic controller, detects the parameters such as voltage, electric current of generator output, and when not meeting the electrical network demand, control gear carrys out the input speed of regulator generator by start and stop.But the adjustable extent limited is only a few percent; And have the problem of output speed fuctuation within a narrow range, be mainly used in the secondary speed control after preliminary constant speed.
Summary of the invention
The purpose of this utility model is: for the problem of above-mentioned existence, provide a kind of constant speed drive device for wind energy conversion system, engine fuel generating.
The technical solution adopted in the utility model is as follows: comprise a main differential mechanism, a secondary differential mechanism, the first turbine and worm retarder with auto-lock function, not with the second turbine and worm retarder of auto-lock function, the active spur gear be connected with wind energy conversion system, engine fuel output shaft, with driven spur gear and a synchronous machine of initiatively spur gear engagement; Described main differential mechanism comprises the first sun gear, the second sun gear, the first central gear be connected with the first planet carrier one end, the first row star-wheel, the second planet wheel that with the first planet carrier the other end, are connected, the first row star-wheel, the second planet wheel lay respectively between the first sun gear, the second sun gear and mesh in twos with the first sun gear, the second sun gear respectively.The first sun gear connects initiatively spur gear by the first transmission shaft, the second sun gear is connected with the first turbine of the first turbine and worm retarder with auto-lock function by second driving shaft, the worm screw rotating speed of the rotation speed change adjusting turbine and worm retarder of taking turns according to the active spur gear reaches the purpose of constant planet carrier rotating speed, first central gear fixing with the first planet carrier is umbrella gear, the first central gear and the second umbrella gear engagement be connected on output shaft, the second umbrella gear outputs power; Described secondary differential mechanism comprises the 3rd sun gear, the 4th sun gear, the second central gear be connected with the second planet carrier one end, the third line star-wheel, the fourth line star-wheel that with the second planet carrier the other end, are connected, the third line star-wheel, fourth line star-wheel lay respectively between the 3rd sun gear, the 4th sun gear and with the 3rd sun gear, the 4th sun gear and mesh in twos.The 3rd sun gear connects driven spur gear by the 3rd transmission shaft, the 4th sun gear is connected with the second turbine with the second turbine and worm retarder of auto-lock function not by the 4th transmission shaft, second central gear fixing with the second planet carrier is umbrella gear, the second central gear and the 4th umbrella gear engagement be connected on the synchronous machine output shaft, motor output shaft drives the 4th umbrella gear constant revolution; The second worm screw of the second turbine and worm retarder is connected with the first worm screw of the first turbine and worm retarder.
The utility model master, secondary differential mechanism speed ratio is identical, they have respectively the first and the 3rd sun gear as driving wheel, the master of and engagement identical by two diameters, driven spur gear drives, two masters have been guaranteed, the input shaft rotating speed of secondary differential mechanism is identical, the first turbine and worm retarder band auto-lock function, the second turbine and worm retarder is not with auto-lock function, and speed ratio is identical, guaranteed the master, second of secondary differential mechanism, the 4th sun gear rotating speed is identical, but be limited by the speed of the second turbine and worm retarder of not being with self-locking with the speed of the first turbine and worm retarder of self-locking.Small synchronous motor is output as constant rotational speed output, when secondary differential mechanism the 3rd sun gear rotation speed change, the 4th sun gear rotating speed of secondary differential mechanism changes thereupon, connectedly with the second turbine and worm retarder rotating speed of self-locking, do not change, cause the first turbine and worm retarder with self-locking above main differential mechanism to change, and velocity variations equates, causes the synchronization of main differential carrier rotating speed and small synchronous motor, constant.
The utility model utilizes the principle of differential mechanism differential speed regulation, by the wind energy conversion system of the first sun gear and variation wherein, the engine fuel rotating shaft connects as driving wheel, and the function of utilizing the first turbine and worm retarder self-locking rotating speed of regulating the second sun gear reaches the function of constant planet carrier rotating speed transmission, and the rotating speed of self-locking whorl worm and gear retarder is subject to secondary differential mechanism and not with the restriction of the second turbine and worm retarder of self-locking, the constant rotating speed of synchronous machine has caused the master, the rotating speed of second and the 4th sun gear of secondary differential mechanism is with wind energy conversion system, the rotation speed change of natural gas compressor and changing, the output that reaches main differential mechanism is identical with the rotating speed of synchronous machine, thereby reach the function of constant speed driven gas heat pump.
The utility model has been avoided the energy loss of wind energy conversion system, the generating of engine fuel variable speed, has improved generating efficiency, simple in structure, cost is low, easy to process, usage range is wide.Concrete implementation result is as follows:
1, without any need for detecting and control gear, can realize that the output shaft that drives generator amature to rotate is not subject to the impact of motor variable working condition, constant revolution,
2, do not need energy storing structure, surround differential mechanism and or speed reducer and maintaining static with the shell that planet carrier is connected.
3, large for motor speed change adjustable extent, can reach more than 2 times.
4, machine automatization constant speed, there is not fluctuation in output speed, and adjustable accuracy is high, can reach 99.9%, after the constant speed drive device speed governing, does not need speed governing again.
The accompanying drawing explanation
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the utility model embodiment's product structure schematic diagram.
Fig. 2 is the structural representation of the utility model master differential mechanism.
Fig. 3 is the structural representation of the secondary differential mechanism of the utility model.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Constant speed drive device as shown in Figure 1, comprise a main differential mechanism, a secondary differential mechanism, the first turbine and worm retarder with auto-lock function, not with the second turbine and worm retarder of auto-lock function, the active spur gear 1 be connected with wind energy conversion system, engine fuel output shaft, with driven spur gear 2 and a synchronous machine 23 of initiatively spur gear engagement; Described main differential mechanism comprises the first sun gear 7, the second sun gear 11, the first central gear 3 be connected with the first planet carrier 9 one ends, the first row star-wheel 19, the second planet wheel 20 that with the first planet carrier the other end, are connected, the first row star-wheel, the second planet wheel lay respectively between the first sun gear, the second sun gear and mesh in twos with the first sun gear, the second sun gear respectively.The first sun gear connects initiatively spur gear 1 by the first transmission shaft 17, the second sun gear is connected with the first turbine 15 of the first turbine and worm retarder with auto-lock function by second driving shaft 24, first central gear fixing with the first planet carrier is umbrella gear, the first central gear and the second umbrella gear 5 engagements that are connected on output shaft 18, the second umbrella gear outputs power; Described secondary differential mechanism comprises the 3rd sun gear 8, the 4th sun gear 12, the second central gear 4 be connected with the second planet carrier 10 1 ends, the third line star-wheel 21, the fourth line star-wheel 22 that with the second planet carrier the other end, are connected, the third line star-wheel, fourth line star-wheel lay respectively between the 3rd sun gear, the 4th sun gear and with the 3rd sun gear, the 4th sun gear and mesh in twos.The 3rd sun gear connects driven spur gear by the 3rd transmission shaft 26, the 4th sun gear is connected with the second turbine 16 with the second turbine and worm retarder of auto-lock function not by the 4th transmission shaft 25, second central gear fixing with the second planet carrier is umbrella gear, the second central gear and the 4th umbrella gear 6 engagements that are connected on synchronous machine 23 output shafts, motor output shaft drives the 4th umbrella gear constant revolution; The second worm screw 14 of the second turbine and worm retarder is connected with the first worm screw 13 of the first turbine and worm retarder.
The utility model master differential mechanism and secondary differential mechanism rotating speed meet respectively following formula:
Main differential mechanism: the first rotating speed of transmission shaft+second driving shaft rotating speed=2* the first planet carrier rotating speed;
Secondary differential mechanism, the 3rd rotating speed of transmission shaft+four rotating speed of transmission shaft=2* the second planet carrier rotating speed.
Turbine and worm with a self-locking retarder, one with the turbine and worm retarder of self-locking, and the speed ratio of two retarders is identical, and it is example that this example be take the speed ratio of 40:1; It is example that this example of the spur gear of two same sizes (can be also helical gear) be take the spur gear of 40 teeth; With a motor, this motor can be synchronous machine, can be also actuating motor, and this example be take synchronous machine as example, and main requirement is invariablenes turning speed.
The first sun gear of described main differential mechanism is connected with wind energy conversion system, engine fuel output shaft (not shown) by the first transmission shaft, the first transmission shaft is as driving shaft, connect a spur gear in the middle of it, this spur gear can connect by the keyway fit system, also can make as a whole processing and fabricating with the first transmission shaft; The second driving shaft of main differential mechanism is connected with the first turbine of turbine and worm retarder with auto-lock function, can connect by the keyway fit system, also can make as a whole processing and fabricating with second driving shaft; The first planet carrier and the first umbrella gear are fixed together, the first umbrella gear and the second umbrella gear engagement outputting power, and the second umbrella gear is fixed on pto＝power take-off, and present technique personnel will be appreciated that the mechanism of differential mechanism, at this, are not described in detail.According to above-mentioned company, the variation of the first rotating speed of transmission shaft, the rotating speed of the first worm screw of the first turbine and worm retarder of adjusting belt self-locking, namely regulated the second driving shaft rotating speed, as long as guarantee that first, second transmission shaft algebraic sum is definite value, the rotating speed of the first row star wheel frame is just constant; It is constant that the rotating speed of output shaft becomes.
The 3rd transmission shaft of described secondary differential mechanism is connected with a driven spur gear, active spur gear on this driven spur gear and main differential mechanism is meshing, and rotating speed is identical, switched in opposite, driven spur gear can connect by the keyway fit system, also can make as a whole processing and fabricating with the 3rd transmission shaft; The 4th transmission shaft of secondary differential mechanism is connected with the second turbine with the second turbine and worm retarder of auto-lock function not, can pass through the connection of keyway fit system, also can make as a whole processing and fabricating with the 4th transmission shaft; The second planet carrier and the 3rd umbrella gear are fixed together, the 3rd umbrella gear and the engagement of the 4th umbrella gear, and the 4th umbrella gear is fixed on the output shaft of synchronous machine, and present technique personnel will be appreciated that the mechanism of differential mechanism, at this, are not described in detail.With reference to above-mentioned formula, synchronous machine guarantees constant rotating speed output, has guaranteed the constant of the second planetary wheel carrier rotating speed, and the rotating speed algebraic sum of the 3rd, the 4th transmission shaft is definite value, and the 3rd shaft speed variable quantity equates with the velocity variable of the 4th transmission shaft.
The worm screw of two turbine worm reducers is same axle, and just Hand of spiral is contrary.
When the axle speed of engine output shaft changes, first of major-minor differential mechanism, identical change all occurs in second driving shaft, it is opposite direction, synchronous machine invariablenes turning speed on secondary differential mechanism is constant, the 4th transmission shaft that has guaranteed secondary differential mechanism changes with the variation of the 3rd transmission shaft, variable quantity equates, because the speed ratio of whole turbine and worm retarder is identical, the first rotating speed of transmission shaft that has guaranteed main differential mechanism equates with the speed of the 3rd transmission shaft of secondary differential mechanism, it is opposite direction, and the connection of the second driving shaft of main differential mechanism is the first turbine and worm retarder with self-locking, what the 4th transmission shaft of secondary differential mechanism connected is the turbine and worm retarder of not being with self-locking, therefore the second driving shaft rotating speed of main differential mechanism is controlled by the 4th rotating speed of transmission shaft of secondary differential mechanism, as long as guarantee the synchronous machine invariablenes turning speed on secondary differential mechanism, the output shaft that has guaranteed main differential mechanism is constant.
The foregoing is only preferred embodiment of the present utility model, all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. the constant speed drive device for the generating of wind energy conversion system, engine fuel is characterized in that:
Comprise a main differential mechanism, a secondary differential mechanism, with the first turbine and worm retarder of self-locking, not with the second turbine and worm retarder of self-locking, intermeshing active spur gear and driven spur gear, and synchronous motor;
Described main differential mechanism comprises the first sun gear, the second sun gear, the first central gear be connected with the first planet carrier one end, the first row star-wheel, the second planet wheel that with the first planet carrier the other end, are connected, the first row star-wheel, the second planet wheel lay respectively between the first sun gear, the second sun gear and mesh in twos with the first sun gear, the second sun gear respectively; The first sun gear connects initiatively spur gear by the first transmission shaft, the second sun gear is connected with the first turbine of the first turbine and worm retarder by second driving shaft, first central gear fixing with the first planet carrier is umbrella gear, the first central gear and the second umbrella gear engagement be connected on output shaft;
Described secondary differential mechanism comprises the 3rd sun gear, the 4th sun gear, the second central gear be connected with the second planet carrier one end, the third line star-wheel, the fourth line star-wheel that with the second planet carrier the other end, are connected, the third line star-wheel, fourth line star-wheel lay respectively between the 3rd sun gear, the 4th sun gear and with the 3rd sun gear, the 4th sun gear and mesh in twos; The 3rd sun gear connects driven spur gear by the 3rd transmission shaft, the 4th sun gear is connected with the second turbine of the second turbine and worm retarder by the 4th transmission shaft, second central gear fixing with the second planet carrier is umbrella gear, the second central gear and the 4th umbrella gear engagement be connected on the synchronous machine output shaft; The second worm screw of the second turbine and worm retarder is connected with the first worm screw of the first turbine and worm retarder.
2. constant speed drive device according to claim 1, it is characterized in that: described main differential mechanism, secondary differential mechanism are enclosed in a shell, and the first planet carrier, the second planet carrier are connected with shell respectively.
3. constant speed drive device according to claim 1, it is characterized in that: described synchronous machine is small synchronous motor.
4. constant speed drive device according to claim 1, it is characterized in that: described motor is actuating motor.
5. constant speed drive device according to claim 1, it is characterized in that: described spur gear is helical gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320513912.XU CN203384302U (en) | 2013-08-22 | 2013-08-22 | Constant-speed drive device for electricity generation of wind machine and fuel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320513912.XU CN203384302U (en) | 2013-08-22 | 2013-08-22 | Constant-speed drive device for electricity generation of wind machine and fuel engine |
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| Publication Number | Publication Date |
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| CN203384302U true CN203384302U (en) | 2014-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320513912.XU Expired - Fee Related CN203384302U (en) | 2013-08-22 | 2013-08-22 | Constant-speed drive device for electricity generation of wind machine and fuel engine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421382A (en) * | 2013-08-22 | 2015-03-18 | 中国石油天然气股份有限公司西南油气田分公司川东北气矿 | Constant-speed transmission device used for power generation of wind turbine and fuel engine |
| CN105804939A (en) * | 2014-12-29 | 2016-07-27 | 大久制作(大连)有限公司 | Coaxial type tri-rotor wind power generation motor |
| CN111089142A (en) * | 2018-10-23 | 2020-05-01 | 劳斯莱斯有限公司 | Epicyclic gearbox |
| CN111706461A (en) * | 2020-06-24 | 2020-09-25 | 包筱箐 | Closed adjustable power generation device of vertical axis wind power street lamp |
| GR20200100357A (en) * | 2020-06-23 | 2022-01-13 | Παναγιωτης Βασιλειου Ζαραφωνιτης | Mechanism for endless rotation transmission between an unmoving frame and a rotating carrier independently from the rotation of this last |
-
2013
- 2013-08-22 CN CN201320513912.XU patent/CN203384302U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421382A (en) * | 2013-08-22 | 2015-03-18 | 中国石油天然气股份有限公司西南油气田分公司川东北气矿 | Constant-speed transmission device used for power generation of wind turbine and fuel engine |
| CN104421382B (en) * | 2013-08-22 | 2016-12-28 | 中国石油天然气股份有限公司西南油气田分公司川东北气矿 | A kind of for wind energy conversion system, the constant speed drive device of engine fuel generating |
| CN105804939A (en) * | 2014-12-29 | 2016-07-27 | 大久制作(大连)有限公司 | Coaxial type tri-rotor wind power generation motor |
| CN111089142A (en) * | 2018-10-23 | 2020-05-01 | 劳斯莱斯有限公司 | Epicyclic gearbox |
| CN111089142B (en) * | 2018-10-23 | 2023-10-27 | 劳斯莱斯有限公司 | Turnover circular gear case |
| GR20200100357A (en) * | 2020-06-23 | 2022-01-13 | Παναγιωτης Βασιλειου Ζαραφωνιτης | Mechanism for endless rotation transmission between an unmoving frame and a rotating carrier independently from the rotation of this last |
| CN111706461A (en) * | 2020-06-24 | 2020-09-25 | 包筱箐 | Closed adjustable power generation device of vertical axis wind power street lamp |
| CN111706461B (en) * | 2020-06-24 | 2021-07-09 | 北京和达数讯信息技术有限公司 | Closed adjustable power generation device of vertical axis wind power street lamp |
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| 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: 20140108 Termination date: 20160822 |
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| CF01 | Termination of patent right due to non-payment of annual fee |