CN203372384U - Vessel pneumatic propulsion system - Google Patents

Vessel pneumatic propulsion system Download PDF

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Publication number
CN203372384U
CN203372384U CN201320258796.1U CN201320258796U CN203372384U CN 203372384 U CN203372384 U CN 203372384U CN 201320258796 U CN201320258796 U CN 201320258796U CN 203372384 U CN203372384 U CN 203372384U
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CN
China
Prior art keywords
ships
boats
hull
unit
propulsion system
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Expired - Fee Related
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CN201320258796.1U
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Chinese (zh)
Inventor
彭志亮
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CS MARINE TECHNOLOGY Pte Ltd
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CS MARINE TECHNOLOGY Pte Ltd
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Priority to CN201320258796.1U priority Critical patent/CN203372384U/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
    • B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
    • B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H7/00—Propulsion directly actuated on air
    • B63H7/02—Propulsion directly actuated on air using propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
    • B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
    • B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
    • B63B2001/387—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes using means for producing a film of air or air bubbles over at least a significant portion of the hull surface
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Toys (AREA)

Abstract

The invention provides a vessel pneumatic propulsion system, which comprises an air inlet unit and an ejecting unit. The air inlet unit is arranged on a vessel body and is used for guiding outside air into the vessel body after pressurizing and speeding up the outside air. The ejecting unit is arranged on the portion of the vessel body, which is under the water line. The ejecting unit is used for ejecting the air which is guided into the vessel body towards the rear portion of a vessel to the water. When the pressure of the air which is guided into the vessel body is larger than the pressure of water on the portion of the ejecting unit, the air guided into the vessel body is ejected out through the ejecting unit. According to the vessel pneumatic propulsion system, the energy-saving purpose can be effectively achieved during the propulsion process of the vessel.

Description

The boats and ships pneumatic propulsion system
Technical field
The utility model relates to technical field of ships, relates to particularly a kind of boats and ships pneumatic propulsion system.
Background technology
At present, traditional propulsion mode of boats and ships is screw propeller propulsion modes, and screw propeller is installed on the underwater of stern usually, and is comprised of propeller hub and some blades radially be fixed on propeller hub, and this screw propeller obtains power by marine powerplant and rotates.This screw propeller propulsion mode is mainly to utilize the wing principle, when screw propeller rotates, the blade of screw propeller constantly push water to rear and the reaction force acts of water on blade, produce propulsive force forward, thereby promote boats and ships, travel forward.
In the prior art, the Ship propulsion method of multiple employing screw propeller is disclosed, for example, in the open CN 102923288A of Chinese patent, a kind of twin-screw propulsion device for ship is disclosed, contrary main screw and the secondary screw propeller of rotation direction that comprises blade, with this by two screw propeller propelling ships forward.In addition, in the open CN101074042A of Chinese patent, also disclose a kind of hull advanced with screw propeller, it utilizes at least one screw propeller arranged on stern to promote boats and ships and travels forward.
But, use the efficiency of this traditional screw propeller propulsion mode higher also can only reach 0.7 left and right.In this progradation, degradation of energy mainly contains following several respects: the loss caused because of the friction force of the blade surface of screw propeller; The loss caused because of the axial jet of the oar axle of screw propeller (its account for whole progradation degradation of energy 2/3); Rotate the loss caused in non-eddy flow because of screw propeller; The loss caused because of the blade tip vortex of screw propeller; The loss caused because of the propeller hub vortex of screw propeller.
In addition, the propulsion mode that adopts the supernatant air screw be installed on stern is also arranged, the rotation by screw propeller rearward promotes air, thereby utilize the antagonistic force of air to promote boats and ships, travels forward.
For example, in the open CN201102626 of Chinese patent, disclose a kind of air propeller thruster watercraft, promoted boats and ships by air screw and advance.In addition, in the open CN101857080B of Chinese patent, a kind of shake-proof anti-drag aerodynamic ship is disclosed, its power travelled is that air screw drives air, rather than driving water, and possess the air flue be connected with air compressor in the bottom of this ship, with the bottom at ship by gas storage, thereby play the effect of air bellow damping.
But existing various marine propuision systems as above all can not reduce the energy consumed in the propulsion of ship process effectively.
The utility model content
In view of the above, technical problem to be solved in the utility model is to provide a kind of boats and ships pneumatic propulsion system that can be effectively energy-conservation.
In order to solve the problems of the technologies described above, the utility model provides a kind of boats and ships pneumatic propulsion system, comprising: be arranged on hull to be directed into the air admission unit in described hull after the gas boosting by outside speedup; And the position that is arranged at the underwater of described hull is ejected to the ejection unit in water with the gas by importing to the rear of described hull; Wherein, when the pressure of the gas of described importing is greater than the pressure of water at place, described ejection unit, the gas of described importing sprays by described ejection unit.
According to the utility model, by air admission unit, gas is directed in hull, and the gas that makes this importing has certain pressure and high-speed, then the rear ejection to the underwater of hull by the gas of importing by the ejection unit, because the pressure of the gas imported is greater than the hydraulic pressure at ejection place, unit, therefore the gas of ejection can be pressed in water and constantly promote backward water, thereby obtain thrust forward, promotes boats and ships and travels forward, and usings this power advanced as boats and ships.
Adopt the utility model, using jet gas as power, the quality of the wake flow of this gas push can increase greatly, can reduce thus the kinetic energy of wake flow, reaches energy-conservation purpose; And adopt boats and ships pneumatic propulsion system of the present utility model, can reduce the degradation of energy of axial jet of the oar axle of traditional screw propeller, also do not there are in addition above-mentioned other several degradations of energy of screw propeller propulsion mode.Therefore, the utility model provides and can effectively realize energy-conservation Ship propulsion method.
Again, in the utility model, described air admission unit can comprise: the outstanding also free air diffuser of opening from described hull to supernatant direction; And be arranged in the opening of described free air diffuser for importing the screw propeller of gas.
According to the utility model, the rotation by the screw propeller in the opening that is arranged at free air diffuser is directed into gas in hull via free air diffuser effectively, and also can effectively make by the rotation of this screw propeller the gas boosting the speedup that import.
Again, in the utility model, described air admission unit can be arranged at the front portion of described hull, described ejection unit is arranged at the afterbody of the underwater of described hull, and is provided with the foot passage extended upward in the front and back of described hull to be communicated with described air admission unit and described ejection unit in the bottom of described hull.
According to the utility model, air admission unit is arranged to the anterior of hull and will sprays the configuration of afterbody that unit is arranged at the underwater of hull and can take full advantage of the suction of air admission unit to extraneous gas, and then be conducive to the rear to hull by the gas of importing and be ejected in water, thereby can more effectively realize the propelling of boats and ships, and because the bottom at hull is provided with the foot passage that extends upward in the front and back of hull and be communicated with air admission unit and ejection unit, can make a large amount of gas longitudinal streams through hull, thereby can make the water resistance of boats and ships greatly reduce, and can take full advantage of the wake of hull, be conducive in addition keep the course stability of boats and ships.
In the utility model, can also comprise the steering unit that is arranged on described hull the course for handling boats and ships again.
According to the utility model, can change the ship running direction, realize the road-holding property of boats and ships with this.
Again, in the utility model, described steering unit can comprise the locational direction conversion control device of the underwater that is arranged at described hull; Described direction conversion control device possesses: the housing that is communicated with described air admission unit and extends in vertical direction; And a plurality of air nozzles that open and close towards the different directions selectivity respectively that arrange along the perisporium of described housing.
According to the utility model, a plurality of air nozzles that open and close towards the different directions selectivity respectively that perisporium by the housing along the direction conversion control device arranges, gas from air admission unit optionally can be ejected in water to different directions via the plurality of air nozzle, thereby utilize the antagonistic force of water, boats and ships are turned to the reversing sense of gas emission direction.Thus, can effectively realize the road-holding property of boats and ships.
Again, in the utility model, described housing can be circular pipe, and described a plurality of air nozzles carry out the selectivity switching by the baffle plate of the inside face slip of the perisporium along described circular pipe.
According to the utility model, the baffle plate that the inside face of the perisporium by the housing along the circular pipe form slides can carry out the switching of air nozzle effectively, and this apparatus structure is simple, easy operating.
Again, in the utility model, described steering unit can comprise the rudder gear on the afterbody of the underwater that is arranged at described hull.
According to the utility model, can control by the dynaflow on the rudder blade that acts on rudder gear the course of boats and ships, and be arranged at rudder gear on the afterbody of underwater of hull change on ship's head more laborsaving, quick.
In the utility model, can on described hull, be provided with at least one described air admission unit and the foot passage corresponding with the quantity of described air admission unit again.
According to the utility model, one or more air admission units and the foot passage corresponding with this air admission unit quantity can be set according to actual needs, thereby can regulate the size of propulsion of ship power.
According to the following specific embodiment and with reference to accompanying drawing, above-mentioned and other purpose of the present utility model, feature and advantage will be more clear.
The accompanying drawing explanation
Fig. 1 illustrates the lateral plan of outfit according to the boats and ships of the boats and ships pneumatic propulsion system of the utility model one example;
Fig. 2 illustrates the back view of the boats and ships shown in Fig. 1;
Fig. 3 illustrates the A-A of the boats and ships shown in Fig. 1 to view;
Fig. 4 illustrates the B-B of the boats and ships shown in Fig. 1 to view;
Fig. 5 illustrates the C-C cutaway view of the boats and ships shown in Fig. 1;
Fig. 6 illustrates the block diagram according to the free air diffuser in the boats and ships pneumatic propulsion system of this example;
Fig. 7 illustrates the lateral plan of outfit according to the boats and ships of the boats and ships pneumatic propulsion system of another example of the utility model;
Fig. 8 illustrates the back view of outfit according to the boats and ships of the boats and ships pneumatic propulsion system of the another example of the utility model.
The specific embodiment
Describe boats and ships pneumatic propulsion system of the present utility model in detail below in conjunction with drawings and Examples.
Fig. 1 illustrates the lateral plan of employing according to the boats and ships of the boats and ships pneumatic propulsion system of the utility model one example.As shown in Figure 1, adopt the boats and ships of boats and ships pneumatic propulsion system of the present utility model to possess hull 1.The boats and ships pneumatic propulsion system that the utility model provides comprises: be arranged on hull 1 to be directed into the air admission unit 2 in hull 1 after the gas boosting by outside speedup; And the position that is arranged at the underwater of hull 1 is ejected to the ejection unit 3 in water with the gas by importing to the rear of hull 1; Wherein, when the pressure of the gas imported is greater than the pressure of water at ejection 3 places, unit the gas of this importing by 3 ejections of ejection unit.
Boats and ships pneumatic propulsion system of the present utility model is directed into gas (this gas is such as being air etc.) in hull 1 by air admission unit 2, and the gas that makes this importing has certain pressure and high-speed, then the rear ejection to the underwater of hull 1 by the gas of importing by ejection unit 3, because the pressure of the gas imported is greater than the hydraulic pressure at ejection 3 places, unit, therefore the gas of ejection can be pressed in water and constantly promote backward water, promote boats and ships and travels forward thereby obtain thrust forward, using this power advanced as boats and ships.This boats and ships pneumatic propulsion system is usingd jet gas as power, can reduce the degradation of energy of axial jet of the oar axle of traditional screw propeller, does not also have in addition other several degradations of energy of screw propeller propulsion mode.Make a concrete analysis of as follows.
The boats and ships of at this, take uniform movement describe as example, follow according to momentum theorem and energy theorem, and the boats and ships of uniform movement have following motion characteristics:
M shipv ship=M waterv water, E=1/2M shipv ship 2+ 1/2M waterv water 2;
Wherein, M shipfor the quality of ship, V shipfor the speed (being the speed of a ship or plane) of ship, M waterfor the quality of wake flow, V waterfor the speed of wake flow, the gross energy of E for consuming in this boats and ships uniform movement process.
Reduce the gross energy of this consumption, under the prerequisite that does not affect the speed of a ship or plane, only have the kinetic energy that reduces wake flow, but do not reduce the momentum of wake flow.Be specially the quality that increases wake flow, equal proportion ground reduces the speed of wake flow simultaneously, not reduction of the momentum of wake flow like this, but due to kinetic energy be speed square, therefore the kinetic energy of wake flow can reduce.
The utility model is ejection unit 3 to be set with the rear jet gas to hull 1 in the position of the underwater of the hull 1 of boats and ships, and the quality of the wake flow of its promotion increases greatly, thereby can reach required energy-conservation purpose.
In addition, in an example of the boats and ships pneumatic propulsion system of the present utility model shown in Fig. 1 to Fig. 3 and Fig. 6, air admission unit 2 comprises: the outstanding also free air diffuser 21 of opening from hull 1 to supernatant direction; And be arranged at the screw propeller 23 for importing gas in the opening 22 of this free air diffuser 21.And this free air diffuser 21 extends in hull 1 and is communicated with ejection unit 3, with the gas that will be imported by screw propeller 23, is delivered to ejection unit 3, and then by the gas of importing, the rear to hull 1 is ejected to water from ejection unit 3, to realize the propelling to boats and ships.In this example, ejection unit 3 can be for example the ejiction opening that makes the gas ejection.
In this example, rotation by the screw propeller 23 in the opening 22 that is arranged at free air diffuser 21 is directed into gas in hull 1 via free air diffuser 21 effectively, and also can effectively make by the rotation of this screw propeller 23 gas boosting the speedup that import, can be conducive to thus the running of air admission unit 2.But the utility model is not limited to this, also can adopt the air admission unit of other arbitrary structures of the gas boosting speedup that can import gas and make to import, comprise the air admission unit of the member such as air compressor etc. such as employing.
Preferably, as shown in Figure 1, air admission unit 2 can be arranged at the front portion of hull 1, and ejection unit 3 can be arranged at the afterbody of the underwater of hull 1.And this boats and ships pneumatic propulsion system can also comprise along the fore-and-aft direction of hull 1 and is arranged at the bottom of hull 1 and with air admission unit 2 and spray the foot passage 4 that unit 3 is communicated with extending.
In this example, air admission unit 2 is arranged to the anterior of hull 1 and will sprays the suction that the configuration of afterbody that unit 3 is arranged at the underwater of hull 1 can take full advantage of 2 pairs of extraneous gass of air admission unit, and then be conducive to the rear to hull 1 by the gas of importing and be ejected in water, thereby can more effectively realize the propelling of boats and ships.In addition, the effect of this foot passage 4 be mainly restriction gas as much as possible longitudinal stream through the bottom of ship, thereby can make the water resistance of boats and ships greatly reduce, and can take full advantage of the wake of hull, be conducive in addition keep the course stability of boats and ships.In addition, because boats and ships travel on the water, unavoidably have the situation of waving, the gas of ejection may be escaped in foot passage 4, but can not affect propulsive force.
In addition, the utility model can also comprise the steering unit that is arranged on hull 1 course for handling boats and ships.In an example of the present utility model, as shown in Fig. 1, Fig. 4 and Fig. 5, this steering unit can comprise the locational direction conversion control device 5 of the underwater that is arranged at hull 1.This direction conversion control device 5 possesses: the housing 50 that is communicated with air admission unit 2 and extends in vertical direction; And a plurality of air nozzles that open and close towards the different directions selectivity respectively that arrange along the perisporium of this housing 50.
In this example, this housing 50 is circular pipe, and the plurality of air nozzle carries out the selectivity switching by the baffle plate 53 of the inside face slip of the perisporium along circular pipe 50.Particularly, this housing 50 comprises the admission port 51 be communicated with the free air diffuser 21 of above-mentioned air admission unit 2.In the example shown in Fig. 4-Fig. 5, the plurality of air nozzle comprises four air nozzle 52a-52d of the four direction all around towards hull arranged along the perisporium of this housing 50, three baffle plates 53 that the inside face of the perisporium by the circle along housing 50 slides can open and close four air nozzle 52a-52d selectivity, thereby change the ship running direction by changing jet direction.
Particularly, be arranged to the air nozzle 52a on the direction at the rear of hull 1 and open and other air nozzle while closing, travel forward by jet boats and ships that make rearward; In like manner be arranged to the air nozzle 52b on the direction in the place ahead of hull 1 and open and other air nozzle while closing, by forwards jet, make Ship brake or travel backward; Be arranged to the air nozzle 52d on the direction of the left of hull 1 and open and other air nozzle while closing, by the jet boats and ships that make of left toward turning right; And be arranged to the air nozzle 52c on right-hand direction of hull and open and other is while closing, by the right-hand jet boats and ships that make toward turning left.By means of this, can effectively realize turning to of boats and ships.
In this example, employing opens and closes each air nozzle along baffle plate 53 selectivity of the inside face slip of the perisporium of circular pipe 50, and it is simple in structure, easy operating.But the utility model is not limited to this, also can adopt other any suitable switching mechanisms to open and close air nozzle with selectivity, thereby utilize the antagonistic force of water, boats and ships are turned to the reversing sense of gas emission direction.
Again, in another example of the present utility model, as shown in Figure 7, steering unit can comprise the rudder gear 6 on the afterbody of the underwater that is arranged at hull 1.This is arranged at the rudder gear 6 on the afterbody of hull 1, act on dynaflow on rudder blade during by ship's navigation and control the course of boats and ships, it is comprised of rudder blade and rudder stock usually, while generally being positioned at stern, because stern is far away apart from the center of turn of ship, the rudder gear 6 that therefore is arranged at afterbody is more laborsaving, quick on the change ship's head.
In addition, in the utility model, can on hull 1, be provided with at least one air admission unit 2 and foot passage 4 corresponding with air admission unit 2 quantity.In example as shown in Figure 8, show two air admission units 2 that are arranged on hull 1, it comprises free air diffuser 21 and screw propeller 23 separately.In addition, also be provided with two foot passages 4 that are connected respectively with two air admission units 2.Thus, one or more air admission units and the foot passage corresponding with this air admission unit quantity can be set according to actual needs, thereby can regulate the size of propulsion of ship power.
In sum, the utility model is to have certain pressure and high-speed gas by ejection in water, obtains the antagonistic force of water and promotes boats and ships to overtake or realize braking and or the road-holding property that turns to of boats and ships.
Industrial applicability:
Boats and ships pneumatic propulsion system of the present utility model can be used as the basic propulsion system of boats and ships or secondary propulsion system (SPS) and is arranged in boats and ships.
Under the aim that does not break away from essential characteristic of the present utility model, the utility model can be presented as various ways, therefore the example in the utility model is to be illustrative rather than definitive thereof, be defined by the claims due to scope of the present utility model but not limited by specification sheets, and drop on the scope that claim defines, or all changes in the full scope of equivalents of its scope defined all are understood to include in the utility model.

Claims (8)

1. a boats and ships pneumatic propulsion system, is characterized in that, comprising:
Be arranged on hull to be directed into the air admission unit in described hull after the gas boosting by outside speedup; And
The position that is arranged at the underwater of described hull is ejected to the ejection unit in water with the gas by importing to the rear of described hull;
Wherein, when the pressure of the gas of described importing is greater than the pressure of water at place, described ejection unit, the gas of described importing sprays by described ejection unit.
2. boats and ships pneumatic propulsion system according to claim 1, is characterized in that, described air admission unit comprises:
The outstanding also free air diffuser of opening from described hull to supernatant direction; And
Be arranged in the opening of described free air diffuser for importing the screw propeller of gas.
3. boats and ships pneumatic propulsion system according to claim 1 and 2, it is characterized in that, described air admission unit is arranged at the front portion of described hull, described ejection unit is arranged at the afterbody of the underwater of described hull, and is provided with the foot passage extended upward in the front and back of described hull to be communicated with described air admission unit and described ejection unit in the bottom of described hull.
4. boats and ships pneumatic propulsion system according to claim 1, is characterized in that, also comprises the steering unit that is arranged on described hull the course for handling boats and ships.
5. boats and ships pneumatic propulsion system according to claim 4, is characterized in that,
Described steering unit comprises the locational direction conversion control device of the underwater that is arranged at described hull;
Described direction conversion control device possesses:
The housing that is communicated with described air admission unit and extends in vertical direction; And
A plurality of air nozzles that open and close towards the different directions selectivity respectively that arrange along the perisporium of described housing.
6. boats and ships pneumatic propulsion system according to claim 5, is characterized in that, described housing is circular pipe, and described a plurality of air nozzles carry out the selectivity switching by the baffle plate of the inside face slip of the perisporium along described circular pipe.
7. boats and ships pneumatic propulsion system according to claim 4, is characterized in that, described steering unit comprises the rudder gear on the afterbody of the underwater that is arranged at described hull.
8. boats and ships pneumatic propulsion system according to claim 3, is characterized in that, is provided with at least one described air admission unit and the described foot passage corresponding with the quantity of described air admission unit on described hull.
CN201320258796.1U 2013-05-14 2013-05-14 Vessel pneumatic propulsion system Expired - Fee Related CN203372384U (en)

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Application Number Priority Date Filing Date Title
CN201320258796.1U CN203372384U (en) 2013-05-14 2013-05-14 Vessel pneumatic propulsion system

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103241356A (en) * 2013-05-14 2013-08-14 巴柏赛斯船舶科技（上海）有限公司 Vessel pneumatic propulsion system
CN105480392A (en) * 2016-01-15 2016-04-13 江苏海事职业技术学院 Ship additional device capable of resisting shock, preventing overturning and converting wave energy
CN113955025A (en) * 2021-11-29 2022-01-21 青岛科技大学 Gliding type marine garbage recycling device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103241356A (en) * 2013-05-14 2013-08-14 巴柏赛斯船舶科技（上海）有限公司 Vessel pneumatic propulsion system
CN105480392A (en) * 2016-01-15 2016-04-13 江苏海事职业技术学院 Ship additional device capable of resisting shock, preventing overturning and converting wave energy
CN105480392B (en) * 2016-01-15 2017-05-31 江苏海事职业技术学院 A kind of shock resistance, overturn-preventing, the ship attachment device of wave energy conversion
CN113955025A (en) * 2021-11-29 2022-01-21 青岛科技大学 Gliding type marine garbage recycling device
CN113955025B (en) * 2021-11-29 2023-08-08 青岛科技大学 Gliding type ocean garbage recycling device

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Granted publication date: 20140101

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CF01 Termination of patent right due to non-payment of annual fee