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WO1998007984A1 - Unite de propulsion a moteur a rendement ameliore - Google Patents

Unite de propulsion a moteur a rendement ameliore Download PDF

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Publication number
WO1998007984A1
WO1998007984A1 PCT/SE1997/001394 SE9701394W WO9807984A1 WO 1998007984 A1 WO1998007984 A1 WO 1998007984A1 SE 9701394 W SE9701394 W SE 9701394W WO 9807984 A1 WO9807984 A1 WO 9807984A1
Authority
WO
WIPO (PCT)
Prior art keywords
unιt
shaft
generator
propulsion
coupled
Prior art date
Application number
PCT/SE1997/001394
Other languages
English (en)
Inventor
Dragoljub Perunicic
Original Assignee
Dragoljub Perunicic
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from PCT/SE1996/001016 external-priority patent/WO1997015491A1/fr
Application filed by Dragoljub Perunicic filed Critical Dragoljub Perunicic
Priority to AU38763/97A priority Critical patent/AU3876397A/en
Publication of WO1998007984A1 publication Critical patent/WO1998007984A1/fr

Links

Classifications

    • 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
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/16—Air or water being indistinctly used as working fluid, i.e. the machine can work equally with air or water without any modification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/92—Mounting on supporting structures or systems on an airbourne structure
    • F05B2240/922—Mounting on supporting structures or systems on an airbourne structure kept aloft due to buoyancy effects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/10—Purpose of the control system
    • F05B2270/1016—Purpose of the control system in variable speed operation
    • 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
    • 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
    • Y02E10/728—Onshore wind turbines

Definitions

  • the present invention relates to a group of invention which harness the kinetic energy of a fluid stream into mechanical motion directly or indirectly and more particularly to motors, turbines and generators Those inventions are technically linked in harnessing the energy of a fluid stream for production of mechanical motion up to the end use forming a single general inventive concept
  • the technical features of each invention of the group are improved in a comparison with the prior art improving features of the group Background Art
  • a turbine which is disclosed in the international patent application no W097/15491 includes a wind driven turbine which dr ⁇ ves(propels) a water turbine, both coupled to a shaft, which rotates about a vertical axis T e wind turbine uses a principle of a revolving crank of crankshaft The turbine is coupled to a direction fin in order to obtain a desired blade motion or alternating anagular deflections in relation to position of blade on an orbit of crank adjustable relative to the wind direction
  • the centrifugal force of water turbine takes water out from the center of turbine during rotation of turbine blades
  • the water turbine includes two or more layers of blades or two or more turbines and a remote control cylinder disposable in a gap of ring plate, which couples the layers
  • the remote control cylinder adjusts a trust of output water flow just according to strenght of the wind, so that the wind driven turbine and water propulsion turbine perform high efficiency in comparison with a prior art instalation, which are generally constructed to be actuated by one certain flow under optimum conditions, otherwise becomes complitly ineffective If the water turbine is driven with a gasoline motor, the remote control cylinder determinates output water and trust of the water, so that speed can be changed without a gear box and a transmission
  • blades of an air- propeller for the same radius can not change surface without changing a rotational speed
  • a higher altitude of a wind turbine is achieved with a higher pole or tower
  • all unit must be turned to achieve a position of porpeller against wind
  • a propeller which rotates about a horizontal axis in some application (pump or craft) can not transfer a rotational force directly without mechanical transmission
  • a turbine of craft with propeller is generally constructed to be actuated by one certain flow under optimum conditions, otherwise becomes useless
  • a propeller of aircraft draggs wings which make lifting pressure
  • a speed of a vehicle or a craft, which uses a gasoline motor is changed with a gear box so the motor must operate a high and vanble rpm
  • a turbo engine of airplane compress fuel-air mixture with a wide propeller while a small propeller rotates the wide propeller
  • Exhausted gas after each explosion, expands in all direction pushing blades of the small turbine and the wall of the housing so that kinetical energy of exhausted gas is partly absorbed by the wall of the housing
  • internal combustion chambers or cylinders of a gasoline engine are stationary so walls of cylinder partly absorb kinetical energy of expanded gas
  • a gasoline engine of a vehicle operates at high and variable rpm mechanically shifting speed and transmiting entire power to front or rear wheels
  • constant frequency generating systems as such disclosed in Jordan s U S Patent No.
  • a low-speed generator in order to increase frequency requires more armature pole windings in a stator or gears to increase rotational speed of a rotor.
  • high-speed generator in order to reduce frequency, requires a special mechanical means to reduce high rotational speed to generate a desired frequency
  • a low-driven generator by an alternative energy(w ⁇ nd, wave) generates AC output which is rectified in DC, as the generator can not achieve constant output frequency.
  • a level of the water in two coupled containers is the same if the same air pressure is applied on both containers. In the container in which air-pressure drops, level of the water increases. If a container having water on the ground is coupled with a flexiblile hose to a container which is located on a captive rigid balloon, a level of water in the container on the balloon is increased due to a low-air pressure in area around the balloon. New coming water in the container on the ground increases the level of water in both containers at the same time, but on different altitude. Surplus of new coming water from the high altitude or from the container on the balloon falls through another flexibile tube to low altitude to a water turbine with a generator on the ground so a higher water potential is achieved in comparison with relatively small kinetical energy of the incoming water.
  • a boiler or container having a freo ⁇ gas is located on a captive rigid balloon, a magnifying glass on the top of the container and/or a bottom conical mirrors focus sun ' s rays and heat the coolediziqud freon gas.
  • the gas evaporates driving a gas turbine.
  • the steam of gas is condensated in a heat exchaner which is located at the balloon at low-air temperature around.
  • the gas becomeuciquid before coming back to the container.
  • a compresor controls a pressure and a point of boiling in the boiler.
  • the sun ' s rays produce more heat on the altitude of the balloon then on the ground.
  • the turbine which is driven by wind or termo energy drives a generator.
  • the generated electricity is delivered to consumers on the ground or on the craft through a cable.
  • Two captive rigid balloons, which are coupled with a frame, are filled up with helium or freon or similer gas.
  • An elevator may lift up an aircraft on a taking off platform, which is coupled with two captive rigid balloons on a higher altitude.
  • a runway on the balloon having direction fins is always automaticaly directed toward the wind as the platform is pivotaly coupled to a rope, which is coupled to the ground.
  • the aircraft should be fasten untill the motor achieves enough power to overcome velocity of the wind.
  • the craft should take off in a direction against the wind.
  • the high velocity of wind may partly interact with wings of the airplane to produce a lifting pressure.
  • Two insulated cylindrical boilers or rigid balloons filled up with freon gas, which are mounted to the wings of the aircraft, may lift the aircraft at a high altitude without using the aircraft ' s motor.
  • An electricity from a network on the ground heats a gas in the boilers while the airplane is on the ground so that the gas evaporates.
  • the aircraft become lighter.
  • a compressor from the ground could control a boiling point and the pressure.
  • the motor of the arcraft should control a taking off and a speed during a flight.
  • a heater and a compressor which are coupled to a battery or a generator located on the aircraft may control the altitude.
  • the gas freon from the boiler flows through a heat exchanger, which is located outside of the airplane.
  • the gas becomes luquid geting on weight.
  • the aircraft become gradually heavier for landing. There is no need that the aircraft carry the fuel, which is required for taking off and to have a strong and heavy motor.
  • the conusmption of the fuel for lifting of the aircraft is less then the fuel required for taking off on the conventional way, so one part of energy of fuel could be saved.
  • a propeller or jet or turbo engine of an airplane draggs the wings as the airplane going ahead. After, the airplane achieves required speed the wings, due to aerodynamical configuration or a difference in air-pressures between a convex upper and bottom flat part of wings, produce enough lifting pressure to lift the airplane.
  • a new propeller or turbine consisting of two or more blades having aerodynamical configuration, which are radially coupled to a vertically rotating shaft of the engine, produces a lifting pressure in a cycle, which lifts the aircraft only upward.
  • a new crankshaft turbine consisting of a blade which is coupled to a crank of a verticaly(or horizontaly) rotating crankshaft may lift and dragg the aircraft with the same turbine.
  • the airplane with such propeller or turbine may take off or land almost verticaly without any need for a conventional runway(as a helicopter which uses a conventional horizontaly disposed propeller rotating around a vertical axis).
  • the stationary walls of cylinders of the gasoline engine of aircraft or craft or vehicle partly absorb energy
  • a centrifugal turbine or pump has an internal combustion chamber in a hole or holes of a centrifugal pump or multy-layered turbine, the absorbtion of kinetical energy of an expanded gas, by the stationary walls, is less.
  • a cylinder of the conventional internal combustion piston-cylinder engine is coupled to a crank of the crankshaft, such cylinder acts as a torque on the crankshaft so that the absorbtion of kinetical energy of exploded gas, by the cylinder, is less
  • a remote control cylinder which determines number of internal combustion chambers in operation or different diameter centrifugal turbines or different radius of cranks of the crankshaft are in used, the changes of speed are possibe without a mechanical transmission and a box gears
  • the engine or motor may operate at a lower rotational rate, when its required, instead to operate all the time at full power rate as prior art The exhausted gas, after leaving the motor or engine, still takes a lot of heat and kinetical energy.
  • centrifugal pump could be used as a compression unit, but more preferably as a propulsion unit for a craft Generating electricity without a turbine and a rotor of generator could save an energy and cut an investment in production of electricity and maintenance of machines with mechanically rotating parts If a part of conductivity of each coil of insulated wire of a w ⁇ nd ⁇ g(wh ⁇ ch is supplied with an electrical current) is achieved through fluid as gas or water(wh ⁇ ch is able to conduct electricity), fregments of such fluid flow due to interaction between the magnetic field produced in this fragments by electric current and another stationary magnetic field.
  • Such device operates as a pump
  • Figs 1-10 illustrate a wind motor which has two types of turbines and two types of wings and two types of coupling sets
  • Fig 11 illustrates a wind motor having different diameter of conventional propellers
  • Figs 12 15 illustrate devices which drives a centrifugal turbine
  • Figs 16-17 illustrate two types of turbine driven by water
  • Figr 18-21 illustrate two types of device for harnessing wave energy
  • Fig 22 and F ⁇ g.24 illustrate a device using solar energy
  • F ⁇ g.23 illustrates a turbine driven by water or steam
  • Figs 25-36 illustrate fuel motors having different types of centrifugal turbine, which have an internal combustion chamber
  • F ⁇ gs.37-45 illustrate fuel motors having different types of reciprocating cylinder, as an internal combustion chamber
  • Figs 46-48 illustrate fuel motors having stationary cylinders
  • Figs 49-55 illustrate two types of propulsion turbine
  • Figs.56-61 illustrate different types of device for lifting off an aircraft
  • Figs.62-70 illustrate a turboless and rotorless generator or pump
  • Figs 71 -79 illustrate variable speed generators
  • F ⁇ gs.80-85 illustrate generators or motors having reciprocating selenoid and magnet
  • Figs 86-89 illustrate different types of electric motors
  • F ⁇ gs.90-94 illustrate conventers or rectifiers
  • F ⁇ gs.95 illustrates a reciprocating pump or compressor
  • F ⁇ gs.96-97 illustrate reciprocating wind driven and 23 turbines for a craft
  • Fig 98 illustrates a wind driven generator
  • Fig 99 illustrates a device for harnessing of surples of steam
  • Fig 100 illustrates an improvement for solar collector Best Mode for Carrying Out the Invention
  • the wind motors as shown in Figs 5,1 1 ,98 and the water motors as shown in Figs 16,17,23 are driven by a variable motive power of flu ⁇ d(w ⁇ nd,water)
  • such motor may be driven by different speed and different strenght of a fluid stream in order to extract maximum available kinetical energy of a fluid stream
  • the wind driven or water dirven motor drives only one propulsion unit as a generator, which is shown in
  • the wind driven motor drives a water propulsion unit as a centrifugal water turbine shown in Fig.50 or a crankshaft turbine shown in Fig 53
  • the centrifugal and crankshaft turbines also have different diameters and different output trust to match to the energy of wind stream
  • the variable speed driven generators shown in Figs 74,76,77 also have different diameter of rotor to match and to extract corresponding energy of fluid
  • the consumption units as electric motors, as shown in Figr 81 84,86,88 and 89 require from the generators or network different energy for start and different energy for opperation
  • the consumption units which use fuel motors as shown in Figs 26,27,30,31 ,32,34,35,41 ,42,47,48 require different energy from such motors for the start and for the operation
  • such motor may change rotational speed and torque to match the rotational speed and torque which is required by the consumption unit
  • speed of consumption unit when speed of consumption unit is low, a high torque is required so the greater diameter of layers of centrifugal turbine or crank of crankshaft turbine would be used As speed incresed the smallest size of turbines will be used
  • As such small turbine do not require the same power as the power which is required by the greater turbine a consumption of fuel will be adjusted according to the requirement and saving of fuel will be achieved This is an advantage in comparison with a conventional fuel motor which operates all the time at high rotational speed to be ready for any fluctuation in requirement

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention porte sur une unité de propulsion à moteur éolien (60) pour générateur (6), possédant au moins deux hélices (64), de diamètre différent, tournant librement sur l'arbre (61) du générateur (6), ainsi que des embrayages à commande centrifuge (38) couplant l'arbre (61) aux hélices (64) lorsque celles-ci parviennent à une certaine vitesse de rotation. Le générateur (6) est monté sur un poteau (63) ou le bâti (23) de deux ballons captifs rigides (24) pourvus d'ailettes (15) servant à diriger la plus petite hélice (64) au plus petit vent. Les pôles du rotor du générateur (455) possèdent au moins deux bobinages (456), l'extrémité de chacun d'eux étant connectée à un contacteur centrifuge (449) afin de fermer le circuit à une vitesse de rotation donnée de l'arbre (61). Ces bobinages (456) sont connectés à des brosses fixes (458) par des anneaux collecteurs (457) montés sur l'arbre (61). Les pôles du stator du générateur (453) sont constitués par des aimants permanents (454). Les vitesses de rotation d'un certain nombre d'hélices (64) et de bobinages (456), qui sont en relation d'interdépendance, sont également fonction de la vitesse du vent ainsi que de l'attitude à laquelle se trouve l'unité (60).
PCT/SE1997/001394 1996-08-23 1997-08-22 Unite de propulsion a moteur a rendement ameliore WO1998007984A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU38763/97A AU3876397A (en) 1996-08-23 1997-08-22 Motor propulsion unit having improved efficiency

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SEPCT/SE96/01016 1996-08-23
PCT/SE1996/001016 WO1997015491A1 (fr) 1995-10-24 1996-08-23 Turbine a rendement ameliore

Publications (1)

Publication Number Publication Date
WO1998007984A1 true WO1998007984A1 (fr) 1998-02-26

Family

ID=20401822

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1997/001394 WO1998007984A1 (fr) 1996-08-23 1997-08-22 Unite de propulsion a moteur a rendement ameliore

Country Status (2)

Country Link
AU (1) AU3876397A (fr)
WO (1) WO1998007984A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008097888A3 (fr) * 2007-02-05 2008-10-02 Betty Lee Snow Améliorations apportées ou se rapportant à un dispositif capable d'exécuter un mouvement de translation sur une surface
KR100971308B1 (ko) 2008-09-19 2010-08-18 주식회사 에너게일 수개의 공중부양튜브를 이용한 공중풍력발전시스템
FR2955556A1 (fr) * 2010-01-28 2011-07-29 Jean Joseph Picq Bateau fonctionnant par energie electrique fournie par eolienne
WO2017211466A1 (fr) * 2016-06-06 2017-12-14 Udo Zillmann Dispositif de propulsion pour un véhicule aquatique et véhicule aquatique
CN112879225A (zh) * 2021-01-27 2021-06-01 安晓敏 一种根据风力强度调节发电量的风力发电设备
CN116443228A (zh) * 2023-03-10 2023-07-18 武汉理工大学 船舶大功率非接触式感应励磁轮缘推进器
CN118650916A (zh) * 2024-06-12 2024-09-17 浙江创富新材料有限公司 一种复合集流体的生产线及其生产工艺

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE132978C (fr) *
DE143416C (fr) *
US1775593A (en) * 1924-08-02 1930-09-09 Kahn Louis Lazare Turbine-wheel propeller or motor
US3910238A (en) * 1974-06-10 1975-10-07 Richard James Piston power unit with stratifying ignition system
GB2010410A (en) * 1977-12-16 1979-06-27 Ciman G Wind-driven power generator
GB2039626A (en) * 1978-12-19 1980-08-13 Secr Defence Rotary machine
DE2932293A1 (de) * 1979-08-09 1981-02-26 Rudolf Arnold Erren Windkraftanlage
US4260328A (en) * 1980-03-10 1981-04-07 Hamel Roland R Windmill
US4380417A (en) * 1979-07-11 1983-04-19 J. M. Voith Gmbh Installation operated with wind or water power
WO1987003336A1 (fr) * 1985-11-30 1987-06-04 MÜLLER-BUCHHOF, Peter Moteur a combustion interne a quatre temps et a deux cylindres
WO1990001625A1 (fr) * 1988-08-01 1990-02-22 Max Tobler Chambre de combustion rotative a injection et refroidissement d'eau pour turbines
EP0679805A1 (fr) * 1993-10-14 1995-11-02 Raul Ernesto Verastegui Eolienne à axe vertical

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE132978C (fr) *
DE143416C (fr) *
US1775593A (en) * 1924-08-02 1930-09-09 Kahn Louis Lazare Turbine-wheel propeller or motor
US3910238A (en) * 1974-06-10 1975-10-07 Richard James Piston power unit with stratifying ignition system
GB2010410A (en) * 1977-12-16 1979-06-27 Ciman G Wind-driven power generator
GB2039626A (en) * 1978-12-19 1980-08-13 Secr Defence Rotary machine
US4380417A (en) * 1979-07-11 1983-04-19 J. M. Voith Gmbh Installation operated with wind or water power
DE2932293A1 (de) * 1979-08-09 1981-02-26 Rudolf Arnold Erren Windkraftanlage
US4260328A (en) * 1980-03-10 1981-04-07 Hamel Roland R Windmill
WO1987003336A1 (fr) * 1985-11-30 1987-06-04 MÜLLER-BUCHHOF, Peter Moteur a combustion interne a quatre temps et a deux cylindres
WO1990001625A1 (fr) * 1988-08-01 1990-02-22 Max Tobler Chambre de combustion rotative a injection et refroidissement d'eau pour turbines
EP0679805A1 (fr) * 1993-10-14 1995-11-02 Raul Ernesto Verastegui Eolienne à axe vertical

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT'S ABSTRACT, No. 94-309697/38, week 9438; & SU,A,1 815 408 (KHUTSISHVILI SH N), 15 May 1993. *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008097888A3 (fr) * 2007-02-05 2008-10-02 Betty Lee Snow Améliorations apportées ou se rapportant à un dispositif capable d'exécuter un mouvement de translation sur une surface
KR100971308B1 (ko) 2008-09-19 2010-08-18 주식회사 에너게일 수개의 공중부양튜브를 이용한 공중풍력발전시스템
FR2955556A1 (fr) * 2010-01-28 2011-07-29 Jean Joseph Picq Bateau fonctionnant par energie electrique fournie par eolienne
WO2017211466A1 (fr) * 2016-06-06 2017-12-14 Udo Zillmann Dispositif de propulsion pour un véhicule aquatique et véhicule aquatique
CN112879225A (zh) * 2021-01-27 2021-06-01 安晓敏 一种根据风力强度调节发电量的风力发电设备
CN116443228A (zh) * 2023-03-10 2023-07-18 武汉理工大学 船舶大功率非接触式感应励磁轮缘推进器
CN118650916A (zh) * 2024-06-12 2024-09-17 浙江创富新材料有限公司 一种复合集流体的生产线及其生产工艺

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Publication number Publication date
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