CN110500228A - It is a kind of for acquiring fixed double Oscillatory Coupling hydrofoil power generator of marine tidal-current energy - Google Patents
It is a kind of for acquiring fixed double Oscillatory Coupling hydrofoil power generator of marine tidal-current energy Download PDFInfo
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- CN110500228A CN110500228A CN201910749493.1A CN201910749493A CN110500228A CN 110500228 A CN110500228 A CN 110500228A CN 201910749493 A CN201910749493 A CN 201910749493A CN 110500228 A CN110500228 A CN 110500228A
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- hydrofoil
- power generator
- swing arm
- ratchet
- workbench
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- 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
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/26—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy
- F03B13/264—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy using the horizontal flow of water resulting from tide movement
-
- 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
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Oceanography (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The double coupling hydrofoil power generator of the fixed oscillation that the invention discloses a kind of for acquiring marine tidal-current energy, are related to marine resources development technical field, including double hydrofoil systems, workbench and pedestal, upper part are provided with the workbench；It is extended transversely through in the workbench and is provided with bearing bracket stand, fixed there are two angular wheel on the bearing bracket stand, transmission gear setting is coupled in workbench bottom, and with two angular wheels, is provided with induction generating set below the transmission gear；Double hydrofoil systems include hydrofoil, swing arm, drive rod, spud pile, ratchet, ratchet bar and the inverse block of full symmetric setting.The present invention has a clear superiority in shallow sea or riverbed; frequency of oscillation is low, and effect on environment is small, and the adjustment of hydrofoil posture is realized by spring and self-locking structure; so that system does not need other input energy to change hydrofoil posture, to achieve the effect that promote energy conversion efficiency.
Description
Technical field
The present invention relates to marine resources development technical fields, and in particular to a kind of for acquiring fixed double vibrations of marine tidal-current energy
Swing coupling hydrofoil power generator.
Background technique
In existing numerous clean energy resourcies, ocean energy occupies especially important status, increasingly withered in non-renewable energy resources
Under the form exhausted, more and more countries and individual also start to explore renewable energy.Marine tidal-current energy is as renewable marine energy
One kind, be the energy that seawater is generated by the graviational interaction of the moon and the sun, energy density is about four times of wind energy, the sun
The thirtyfold of energy, in addition also having can be predicted, and smaller, periodically good, stability is high feature be influenced by weather, in recent years
More by everybody concern.
It is broadly divided into the horizontal axis tidal current energy hydraulic turbine, vertical shaft tidal water wheels using the device that trend can be carried out power generation
Machine, lift-resistance-type marine tidal-current energy device, oscillatory type hydrofoil marine tidal-current energy device and other forms marine tidal-current energy device.In reality
In, tend to be mature in its Development Technology based on horizontal axial type, but the generating efficiency to increase water turbine type is necessary
Increase the catchment area of its blade, that is, turbine blade is required to have very high intensity, and Water wing type does not have such requirement, while water
Wing formula tidal current energy generating equipment has higher stability, and low frequency is also relatively small to the destructiveness of marine biological environment.
The hydrofoil tidal current energy generating equipment that the country is developed at present needs additional control system more, and the pitching movement by controlling hydrofoil is realized
Hydrofoil turns to, overcomes dead point, this substantially reduces generating efficiency.
Therefore, those skilled in the art is dedicated to developing a kind of for acquiring fixed double Oscillatory Coupling water of marine tidal-current energy
Wing power generator, the power generator are the hydrofoil generator of full passive type, realize hydrofoil posture by spring and self-locking structure
Adjustment, thus simplify system negative feedback structure so that system does not need other input energy to change hydrofoil posture, to reach
To the effect for promoting energy conversion efficiency.
Summary of the invention
In view of the above drawbacks of the prior art, the technical problem to be solved by the present invention is to how eliminate Water wing type power generation
How dependence to extraneous control system when device changes the hydrofoil angle of attack, reduced using external power bring structural complexity and not
Stability.
To achieve the above object, the double coupling hydrofoil hairs of the fixed oscillation that the present invention provides a kind of for acquiring marine tidal-current energy
Electric installation, including double hydrofoil systems, workbench and pedestal；The pedestal top is provided with the workbench, in the workbench
It extends transversely through and is provided with bearing bracket stand, fixed there are two angular wheel on the bearing bracket stand, transmission gear is arranged in the workbench
Bottom, and coupled with two angular wheels, induction generating set is provided with below the transmission gear；It is described double
Hydrofoil system includes hydrofoil, swing arm, drive rod, spud pile, ratchet, ratchet bar and the inverse block of full symmetric setting, the pendulum
The front end of arm is articulated and connected with the hydrofoil, and the rear end of the swing arm and the bearing bracket stand are pierced by part articulated connection, institute
Stating inside swing arm is hollow structure, is internally provided with the drive rod, the ratchet and the ratchet bar, the ratchet bar is hinged
On symmetrical two spud piles, the inverse block is hinged on the intermediate spud pile, the inverse block with
The drive rod is to be slidably connected, and the ratchet is hinged on the large cylindrical spud pile, and is rigidly connected with the hydrofoil
It connects, the ratchet bar and the swing arm inner wall are provided with elastic connection, and the movable end of the ratchet bar is with the ratchet described
It is contact occlusive state when the non-stress of elastic connection.
Further, the swing arm two sides at the both ends of the workbench are symmetrically arranged with reversed bolt.
Further, the induction generating set is the magnetic core opposing stationary with the transmission gear, around the magnetic core
It is provided with induction coil.
Further, the inverse block is made of upper layer and lower layer, and lower layer is sector structure, and two layers are cylinder outstanding, institute
Cylinder is stated to be socketed in the sliding slot of the drive rod front end.
Further, the hole slot that the sector structure is used to be fixed on the spud pile is not or not the center of circle of sector circle.
Further, the ratchet bar and the elastic connection of swing arm inner wall setting are the fixed company in compressed spring both ends
It connects.
Further, the natural angle of the hydrofoil and the swing arm in the state of the equilibrium is set as 140 °.
Further, the swing arm carries out movable articulated connection by inserted link with the hydrofoil, and is individually fixed in
The both ends of same torque spring.
Further, the fixing axle and the connection type of the angular wheel are welding.
Further, described device is arranged to be fixedly mounted on seabed.
The present invention is beneficial to be had the technical effect that
(1) frequency of oscillation is low, and effect on environment is small；
(2) injection of outside energy is not needed, energy conversion efficiency is high.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Detailed description of the invention
Fig. 1 is fixed double Oscillatory Coupling hydrofoil power generator overall structure figures；
Fig. 2 is the section assembling figure of hydrofoil swing arm；
Fig. 3 is hydrofoil and connecting rod assembling figure；
Fig. 4 is that ratchet can only turn schematic diagram clockwise；
Fig. 5 is that ratchet can only turn schematic diagram counterclockwise.
Wherein, 1- workbench, 2- swing arm, 3- drive rod, 4- inverse block, 5- ratchet, 6- ratchet bar, 7- hydrofoil, 8- transmission
Gear, 9- angular wheel, the reversed bolt of 10-, 11- pedestal, 12- bearing bracket stand, 13- spud pile, 14- compressed spring, 15- inserted link.
Specific embodiment
Multiple preferred embodiments of the invention are introduced below with reference to Figure of description, keep its technology contents more clear and just
In understanding.The present invention can be emerged from by many various forms of embodiments, and protection scope of the present invention not only limits
The embodiment that Yu Wenzhong is mentioned.
In the accompanying drawings, the identical component of structure is indicated with same numbers label, everywhere the similar component of structure or function with
Like numeral label indicates.The size and thickness of each component shown in the drawings are to be arbitrarily shown, and there is no limit by the present invention
The size and thickness of each component.Apparent in order to make to illustrate, some places suitably exaggerate the thickness of component in attached drawing.
The double coupling hydrofoil power generator of fixed oscillation of the invention, including double hydrofoil systems, workbench 1 and pedestal 11；
As shown in Figure 1, workbench 1 is mainly the glass steel material sealed, bottom is provided with pedestal 11, and pedestal 11 is fixed
It is mounted on seabed, pedestal 11 can do negative work at work, so that the present invention will not move in water flow relative to ground, thus maximum
Limit utilizes marine tidal-current energy.It is extended transversely through in workbench 1 and is provided with bearing bracket stand 12, fixed on bearing bracket stand 12 there are two angular wheel 9,
It can be fixedly connected by welding manner, the setting of transmission gear 8 is coupled in 1 bottom of workbench, and with two angular wheels 9,
The lower section of transmission gear 8 is additionally provided with induction generating set.
Reversed bolt 10 is symmetricly set on the two sides of 1 both ends swing arm 2 of workbench, and it acts as limitation 2 amplitude of fluctuation of swing arm
When swing arm 2 reaches its extreme position, the movement that reversed bolt 10 limits swing arm makes its stalling, while limiting drive rod 3
Movement drive rod 3 can be made to be forced into the extreme position of other side by size design.
Double hydrofoil systems include the hydrofoil 7 of full symmetric setting, swing arm 2, and hydrofoil 7 is made of light composite material, swing arm 2
Rear end and bearing bracket stand 12 be pierced by part articulated connection, torque spring is installed between hydrofoil 7 and swing arm 2, can hydrofoil with
Swing arm relatively rotate when store energy, adjust the torque spring can make hydrofoil in the state of the equilibrium with the natural angle of swing arm
It is 140 °.
Induction generating set and the opposing stationary magnetic core of transmission gear 8 are provided with induction coil around magnetic core, when magnetic core turns
Coil generates electromotive force when dynamic, to convert mechanical energy into as electric energy.
Wherein, two hydrofoils 7 may be sized to: it is long 5 meters, it is 3 meters wide, and 0.2 meter of thickness thickness.The size of swing arm 2
It may be configured as: 20 meters, 0.7 meter of thickness, 2 meters of the widest part long.Workbench 1 may be configured as it is 5 meters wide, it is about 3 meters high, be about 6 meters.Size
Design can change with generated output demand.
As shown in Fig. 2, being hollow structure inside swing arm 2, front end is internally provided with drive rod 3, ratchet 5, ratchet bar
6, hinged ratchet bar 6 on symmetrical two spud piles 13, hinged inverse block 4 on intermediate spud pile 13.The ratchet bar 6
It is hinged on symmetrical two spud piles 13, inverse block 4 is hinged on intermediate spud pile 13, inverse block 4 and drive rod
13 is are slidably connected, and concrete mode is that inverse block 4 is made of upper layer and lower layer, and lower layer is sector structure, and sector structure is for fixing
In the hole slot on spud pile 13 not on the center of circle of sector circle；Two layers are cylinder outstanding, and cylinder is socketed in 3 front end of drive rod
In sliding slot.In addition, ratchet 5 is hinged on large cylindrical spud pile 13.
As shown in figure 3, the front end of swing arm 2 and hydrofoil 7 carry out movable articulated connection by inserted link 15, and fix respectively
In the both ends of same torque spring.Ratchet 5 is hinged on a maximum spud pile 13, and is rigidly connected with hydrofoil 7.
As shown in figure 4, ratchet bar 6 and 2 inner wall of swing arm are provided with elastic connection, it is solid such as to carry out both ends with compressed spring 14
It is fixed, the movable end of ratchet bar 6 can be made to be engaged shape in 14 non-stress of compressed spring with ratchet 5 to contact by size design
State.Ratchet bar 6 is hinged on small spud pile 13, is tended under the compression of compressed spring 14 close to ratchet 5, in the pressure of inverse block 4
Tend under compeling far from ratchet 5, inverse block 4 can oppress the side ratchet bar 6 and its compressed spring 14 is allowed to not in extreme position
It is interfered with ratchet 5.When upper ratchet bar 6 works, ratchet 5 and hydrofoil 7 can only be rotated clockwise.
As shown in figure 5, ratchet 5 and hydrofoil 7 can only rotate counterclockwise when lower ratchet bar 6 works.
The natural angle of hydrofoil 7 and swing arm 2 in the state of the equilibrium is set and is set as 140 °.Place this invention into stable tide
After flowing region, hydrofoil 7 will drive the swing that vertical direction occurs for swing arm 2, and within a period of motion, collecting energy process is main
It is the uphill process of two sides hydrofoil 7, because two sides hydrofoil 7 is complete mirror symmetry setting, so only describing in half period below
Unilateral hydrofoil 7 rises to the energy acquisition process of final extreme higher position from initial extreme lower position.
(1) initial time:
The inclination angle of low level hydrofoil 7 and horizontal plane is -40 ° or so, and ratchet system is locked counterclockwise；The hydrofoil 7 of opposite side
It is about 0 ° with horizontal plane inclination angle, ratchet system is locked clockwise, and the torque spring between hydrofoil 7 and swing arm 2 stores power
In.
(2) initial time is between the final moment:
Low level hydrofoil 7 has an initial bow angle to meet water (flow) direction, the upward driving that water flow generates this side hydrofoil 7
Power.In the entire uphill process of low level hydrofoil 7, because the ratchet system in low level swing arm 2 locks counterclockwise, hydrofoil 7 and swing arm 2
Angle will not be changed by the speed of trend or the speed of swing.
Opposite side hydrofoil 7 and swing arm 2 can tend to passively under the transmission effect of a pair of reversed angular wheel 9 to the bottom.Right
Side hydrofoil 7 is entirely during decline, and the angle between hydrofoil 7 and swing arm 2 persistently changes, and (hydrofoil 7 tends to flat with water (flow) direction
Row), the torque spring systems stay between hydrofoil 7 and swing arm 2 stores power, and restoring force is offset by ratchet system (locked clockwise),
To which the uphill process of low level hydrofoil 7 will not be influenced by lift because of decline process.
Low level hydrofoil 7 constantly rises together with swing arm 2, and opposite side hydrofoil 7 passively declining, posture constantly with water impact and
Tend to holding level, simultaneously because hydrofoil 7 and 2 variable angle of swing arm, torque spring mounted thereto persistently store energy.
(3) the final moment:
The swing arm 2 of former low level hydrofoil 7 reaches its highest extreme position at this time, and the drive rod 3 inside two swing arms 2 all can
The collision for being reversed bolt 10 drives.This makes present high-order drive rod 3 from turning over certain angle；And under the drive of drive rod 3
Inverse block 4 can go to another extreme angles, be transitioned into the lower compressed spring 14 of release from lower compressed spring 14 is compressed, and compress
Upper compressed spring 14.Existing low level drive rod 3 also turns over the angle turned over existing high-order drive rod 3 under the action of reversed bolt 10
It is consistent but contrary；Equally, inverse block 4 can go to another extreme angles, be transitioned into and release from the upper compressed spring 14 of compression
Compressed spring 14 is put, and compresses lower compressed spring 14.
To which ratchet system locking state exchanges, unchanged now at the bow of hydrofoil 7 angle of top, ratchet system becomes suitable
Hour hands are locked；The hydrofoil 7 being below is unobstructed clockwise since ratchet system locks counterclockwise, can be in the reply of torque spring
Rotated clockwise under power so that hydrofoil 7 returns to initial tilt, and due to the effect of ratchet 5 it return to initial tilt when
Quarter can stablize, and cannot rotate counterclockwise again.So far, the swing effect of whole system completes half period.
In addition it is believed that hydrofoil 7 do not consume in the whole process of decline, also not collecting energy.Because water flow is to the water of decline
The wing 7 does work substantially identical as the energy stored by torque spring, and the effective energy that consumes during decline of decline hydrofoil 7 is
Viscous drag work done, and the order of magnitude of this resistance acting is about the 1% of the climbing power Effective power order of magnitude, can not be examined
Consider.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that the ordinary skill of this field is without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be within the scope of protection determined by the claims.
Claims (10)
1. a kind of double coupling hydrofoil power generator of fixed oscillation for acquiring marine tidal-current energy, which is characterized in that including double hydrofoils
System, workbench and pedestal；The pedestal top is provided with the workbench, extends transversely through in the workbench and is provided with bearing
Frame, fixed there are two angular wheel on the bearing bracket stand, transmission gear is arranged in the workbench bottom, and with two cones
Shape gear is coupled, and is provided with induction generating set below the transmission gear；Double hydrofoil systems include completely right
Claim hydrofoil, swing arm, drive rod, spud pile, ratchet, ratchet bar and the inverse block of setting, the front end of the swing arm and the hydrofoil
It is articulated and connected, it is hollow knot inside the swing arm that the rear end of the swing arm and the bearing bracket stand, which are pierced by part articulated connection,
Structure, is internally provided with the drive rod, the ratchet and the ratchet bar, and the ratchet bar is hinged on symmetrical two institutes
It states on spud pile, the inverse block is hinged on the intermediate spud pile, and the inverse block and the drive rod are that sliding connects
Connect, the ratchet is hinged on the large cylindrical spud pile, and with the hydrofoil be rigidly connected, the ratchet bar with it is described
Swing arm inner wall is provided with elastic connection, and the movable end of the ratchet bar connects with the ratchet in the non-stress of the elastic connection
Touch occlusive state.
2. the double coupling hydrofoil power generator of fixed oscillation as described in right 1, which is characterized in that the both ends of the workbench
The swing arm two sides are symmetrically arranged with reversed bolt.
3. the double coupling hydrofoil power generator of fixed oscillation as described in right 1, which is characterized in that the induction generating set is
The opposing stationary magnetic core with the transmission gear is provided with induction coil around the magnetic core.
4. the double coupling hydrofoil power generator of fixed oscillation as described in right 1, which is characterized in that the inverse block is by upper and lower two
Layer composition, lower layer are sector structure, and two layers are cylinder outstanding, and the cylinder is socketed in the sliding slot of the drive rod front end.
5. the double coupling hydrofoil power generator of fixed oscillation as described in right 4, which is characterized in that the sector structure is for solid
The hole slot on the spud pile is scheduled on not on the center of circle of sector circle.
6. the double coupling hydrofoil power generator of fixed oscillation as described in right 1, which is characterized in that the ratchet bar and the pendulum
The elastic connection of arm inner wall setting is that compressed spring both ends are fixedly connected.
7. the double coupling hydrofoil power generator of fixed oscillation as described in right 1, which is characterized in that the hydrofoil and the swing arm
Natural angle in the state of the equilibrium is set as 140 °.
8. the double coupling hydrofoil power generator of fixed oscillation as described in right 1, which is characterized in that the swing arm and the hydrofoil
Movable articulated connection is carried out by inserted link, and is individually fixed in the both ends of same torque spring.
9. the double coupling hydrofoil power generator of fixed oscillation as described in right 1, which is characterized in that the fixing axle and the cone
The connection type of shape gear is welding.
10. the double coupling hydrofoil power generator of fixed oscillation as described in right 1, which is characterized in that described device is arranged to
It is fixedly mounted on seabed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910749493.1A CN110500228B (en) | 2019-08-14 | 2019-08-14 | Fixed double-oscillation coupling hydrofoil power generation device for collecting tidal current energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910749493.1A CN110500228B (en) | 2019-08-14 | 2019-08-14 | Fixed double-oscillation coupling hydrofoil power generation device for collecting tidal current energy |
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| Publication Number | Publication Date |
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| CN110500228A true CN110500228A (en) | 2019-11-26 |
| CN110500228B CN110500228B (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910749493.1A Active CN110500228B (en) | 2019-08-14 | 2019-08-14 | Fixed double-oscillation coupling hydrofoil power generation device for collecting tidal current energy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577521A (en) * | 2020-05-26 | 2020-08-25 | 荆门思安机械设备有限公司 | Running water power generation device |
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|---|---|---|---|---|
| FR2428153A1 (en) * | 1978-06-09 | 1980-01-04 | Marti Jacques | Sea wave energy converter - has levers coupled to floats to drive bevel gear train via ratchet-controlled shafts, giving unidirectional output |
| CN101769224A (en) * | 2009-01-01 | 2010-07-07 | 中国海洋大学 | Wave-powered generating device |
| GR20090100156A (en) * | 2009-03-17 | 2010-10-21 | Παναγιωτης Παπαμαλλης | Electric or mechanical power generation from sea waves |
| CN202250574U (en) * | 2011-10-15 | 2012-05-30 | 顾美明 | T-wave device with ratchet shaft-type rocker |
| CN103253362A (en) * | 2013-05-28 | 2013-08-21 | 国家海洋技术中心 | Wave-driving propeller propelling device and underwater gliding machine |
| CN109356775A (en) * | 2018-12-17 | 2019-02-19 | 青岛理工大学 | Wave energy power generation facility based on crank connecting rod |
-
2019
- 2019-08-14 CN CN201910749493.1A patent/CN110500228B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2428153A1 (en) * | 1978-06-09 | 1980-01-04 | Marti Jacques | Sea wave energy converter - has levers coupled to floats to drive bevel gear train via ratchet-controlled shafts, giving unidirectional output |
| CN101769224A (en) * | 2009-01-01 | 2010-07-07 | 中国海洋大学 | Wave-powered generating device |
| GR20090100156A (en) * | 2009-03-17 | 2010-10-21 | Παναγιωτης Παπαμαλλης | Electric or mechanical power generation from sea waves |
| CN202250574U (en) * | 2011-10-15 | 2012-05-30 | 顾美明 | T-wave device with ratchet shaft-type rocker |
| CN103253362A (en) * | 2013-05-28 | 2013-08-21 | 国家海洋技术中心 | Wave-driving propeller propelling device and underwater gliding machine |
| CN109356775A (en) * | 2018-12-17 | 2019-02-19 | 青岛理工大学 | Wave energy power generation facility based on crank connecting rod |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577521A (en) * | 2020-05-26 | 2020-08-25 | 荆门思安机械设备有限公司 | Running water power generation device |
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| CN110500228B (en) | 2020-09-08 |
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