CN1629036A - Superconductive magnetic fluid marine propeller - Google Patents
Superconductive magnetic fluid marine propeller Download PDFInfo
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- CN1629036A CN1629036A CN 200310121370 CN200310121370A CN1629036A CN 1629036 A CN1629036 A CN 1629036A CN 200310121370 CN200310121370 CN 200310121370 CN 200310121370 A CN200310121370 A CN 200310121370A CN 1629036 A CN1629036 A CN 1629036A
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Abstract
This invention relates to a superconduct magnetic liquids ship pushing device, which comprises the superconduct screw tube magnet and rotary magnetic liquids pushing channel, wherein, the superconduct screw tube magnet generates the even axle magnetic field in its central working area. There is located with one round metal electrode in the working round pipe of the magnetic liquids and with the round pipe metal outer cylinder as another electrode. There is a screw flow guiding pads between the metal outer electrode and central round electrode. There are distributed with several radial metal conductive bars and current control parts in the length direction of the screw guiding pad, which are connected to the above two electrodes through the conductive bars.
Description
Technical field
The present invention relates to a kind of marine propeller, particularly relate to the magnetohydrodynamic marine propulsion.
Background technology
The magnetohydrodynamic propulsion of ship is a kind of new propulsion of ship mode, it be with seawater as electric conductor, under the effect in extra electric field and magnetic field, seawater is subjected to the effect of electromagnetic force, produces waterjet propulsion through passage and jet pipe.Owing to cancelled mechanisms such as conventional propeller shafting and reducing gear, can reduce noise and vibration greatly, might really realize " peace and quiet " and high-revolving propulsion of ship.Over past ten years, along with the development of superconductor technology, magnetohydrodynamic propulsion of ship technology receives the concern of countries in the world day by day, and Japan, the U.S., Russia and China all drop into the research that substantial contribution carries out this respect.So far two magnetic fluid propulsion experiment ship YAMATO-1 and HEMS-1 have been succeeded in developing in the world.The former adopts saddle type superconducting magnet and straight line magnetic fluid to advance passage, and the latter is that superconducting solenoid magnet and spiral magnetic fluid advance passage; The former advantage is that magnetic fluid advances the passage flow resistance loss little, and shortcoming is that saddle type superconducting magnet manufacture difficulty is big, is difficult to produce the very large-scale magnet of high field intensity; The latter's advantage is that superconducting solenoid magnet manufacture difficulty is little, makes the large-scale superconducting magnet of high field intensity easily, and shortcoming is that spiral magnetic fluid advances the inner fluid passage drag losses big.Their magnetic-field intensity is respectively 4T and 5T, and propulsion coefficient is all lower.In order to make this technical applicationization, must further improve propulsion coefficient.
Theoretical analysis, the result of numerical calculation and test shows, improve propulsion coefficient and need solve two very important technical matterss: the one, produce field intensity and surpass 15T weight-saving superconducting magnet, the 2nd, reduce the flow friction drag losses that magnetic fluid advances channel interior significantly.It seems that from present technical merit it is also relatively more difficult greater than the large-scale lightweight superconducting magnet of 15T to produce field intensity, the problem that therefore how to solve the flow friction drag losses that reduces magnetic fluid propelling channel interior significantly becomes particularly important.Present in addition existing mhd thruster can only move in conductive fluid (seawater), can not move in landlocked river, do not had the pacing factor of electromagnetic fluid propelling because fresh water conducts electricity hardly, therefore, existing magnetohydrodynamic propelling unit has certain limitation.
Summary of the invention
The invention provides a kind of rotary type superconduction magnetic fluid marine propulsor, significantly reduce flowing friction drag losses in the existing seawater magnetic fluid marine propulsor, increase substantially propeller efficiency, and not only in the ocean, and in landlocked fresh water, can both move.
Rotary type superconduction magnetic fluid marine propulsor of the present invention is based on the principle of superconducting rotary machine and magnetic fluid propulsion of ship, and it comprises that mainly superconducting solenoid magnet and rotary type magnetic fluid advance passage.The superconducting solenoid magnet produces the axial magnetic field relatively uniformly that distributes vertically in the work area, heart temperature hole therein.It is circular pipe that the rotary type magnetic fluid advances channel profile, is made of some different functional sections, and it constitutes along its axial order is channel inlet section, import diversion section, magnetic fluid active section, outlet rectification section and channel outlet section successively.Magnetic fluid advances passage to pass superconducting solenoid magnet temperature hole, coaxial placement, and can pivot.There is a cylindrical metal electrode in central authorities at magnetic fluid active section circular pipe, the circular pipe metal outer cylinder is as another electrode, the helix flow deflector that between circular pipe outside electrode and central cylindrical shape electrode, has insulating material to make, thus the runner between two electrodes is separated into the spiral flow channel that the cross section is a rectangle; Go up along its length uniform some radially metal conductive strips and current control parts in the insulation flow deflector, the two ends of these current control parts are connected with above-mentioned two electrodes respectively by bus, and the electric current that flows through metal conductive strips is by its current control parts regulation and control.
When magnetic fluid marine propulsor of the present invention was worked, its magnetic fluid advanced the central cylindrical shape electrode and the circular pipe outside electrode of passage to be respectively anode and negative electrode, generally speaking, has two parts electric current and flows to negative electrode from anode.The conductive fluid (seawater) of one part of current from anode process passage is to negative electrode, and another part electric current is from the anode process metal conductive strips and the current control parts Zhiyin utmost point thereof.When the current control parts make electric current in the metal conductive strips be zero, the electric current of fluid (seawater) of only flowing through exists, therefore, the conductivity of fluid (seawater) has influenced conclusive effect to propeller performance, this moment, angle of rake mode of operation was identical with existing magnetic fluid marine propulsor, promptly switch on seawater under the electromagnetic force effect, flow along spiral flow channel, it is non-rotary that whole magnetic fluid advances passage.When the electric current in metal conductive strips in the flow deflector and the current control parts is certain value, because electromagnetic force acts on flow deflector, and make the rotary type magnetic fluid advance passage to rotate around center shaft, the electric current of metal conductive strips in the regulation and control flow deflector, can regulate the speed that magnetic fluid advances passage to rotate, to reduce the relative velocity between inner fluid passage and the conduit wall.Because therefore square being directly proportional of stream friction loss and flowing velocity, can reduce the fricting resistance loss of magnetic fluid propelling inner fluid passage widely, thereby improve efficient significantly.When the current control parts made the full conducting of metal conductive strips, almost all electric currents flow through through metal conductive strips that (conductivity metal is bigger by 10 than seawater
7Doubly), this moment, the propelling unit mode of operation was equivalent to the waterjet propulsion that superconducting rotary machine drives spiral pump.This moment, the conductivity of inner fluid passage was insignificant to angle of rake performance impact, can ignore.Under this kind operating mode, magnetic fluid marine propulsor of the present invention can be worked under the fresh water condition in inland river.Can there be three kinds of operational configurations on the angle of rake naval vessel of equipment the present invention: existing magnetic fluid propulsion of ship (passage does not rotate) is suitable for quiet navigation; The revolving magnetic fluid propulsion of ship of passage is applicable to efficiently, high-speed aircraft to; The spray of superconduction electric machine spiral pump advances, and navigates by water at fresh water area.Preceding two kinds are applicable to the ocean, and the third is applicable to the inland river, and therefore, this rotary type superconduction magnetic fluid marine propulsor has higher efficient and purposes widely.
Description of drawings
Fig. 1 is an embodiment of the invention pie graph, and 1 is the superconducting solenoid magnet, and 2 are rotary type magnetic fluid propelling passage.
Fig. 2 is a channel architecture scheme drawing of the present invention, and 3 is channel inlet section, and 4,5 are the positive and negative electric pole that draws of electrode, 6 are the import diversion section, and 7 is the magnetic fluid active section, and 8 is central cylindrical shape electrode, and 9 is the helix flow deflector, 10 is outside electrode, and 11 are the outlet rectification section, and 12 is the channel outlet section.
Fig. 3 is current diagram between helix flow deflector inner structure of the present invention and electrode, and 13 for the cross section is the spiral flow channel of rectangle, and 14 is metal conductive strips and current control parts.
The specific embodiment
Describe the present invention in detail below in conjunction with accompanying drawing and embodiment.
The formation of the specific embodiment of the invention as shown in Figure 1, it advances passage 2 to form by superconducting solenoid magnet 1 and rotatable magnetic fluid, superconducting solenoid magnet Wen Kongzhong magnetic-field intensity is 5T, the structure that the rotary type magnetic fluid advances passage 2 as shown in Figures 2 and 3, it is by channel inlet section 3, inducer section 6, magnetic fluid active section 7, outlet rectifier section 11 and channel outlet section 12 are formed, and 4,5 are the positive and negative electric pole that draws of electrode, and 8,10 is central cylindrical shape electrode and outside electrode.0.35 meter of magnetic fluid work segment length, the outside electrode diameter is 0.2 meter, central cylindrical shape electrode external diameter is 0.06 meter, helix flow deflector 9 is divided into the spiral flow channel 13 of square-section with flowing between two electrodes, the helical angle of helix flow deflector 9 is 23 degree, integral body is insulating material, 10 millimeters of mean thicknesss, in the middle of it along uniform metal conductive strips and current control parts 14 thereof radially on the flow deflector length of run direction.In the work area of this device mhd thruster, superconducting solenoid magnet 5 produces axial magnetic field B, is added on magnetic fluid outward and advances the electric current between the channel electrode 8,10 that two paths, one part of current I are arranged
1Flow through seawater in the spiral flow channel 13, one part of current I
2The flow through metal conductive strips and the current control parts 14 of flow deflector.
Because it is rotatable that magnetic fluid of the present invention advances channels designs, and the electric current in the metal conductive strips of passage spiral flow deflector is adjustable, therefore the present invention can have following three kinds of mode of operations: the one, and magnetic fluid advances passage not rotate, metal conductive strips and the not conducting of current control parts thereof, the electric current that promptly passes through is zero, and the electric current that two electrodes are 8,10 has only I
1Flow through the seawater in the spiral flow channel 13, because electromagnetic action produces the tangential electromagnetic force F of circumference in the seawater
1, under flow deflector 9 guiding, seawater flows along spiral flow channel 13, and seawater sucks from channel entrance 3, in channel outlet 12 ejections, forms thrust, and its antagonistic force promotes boats and ships and advances.This mode of operation is identical with existing magnetic fluid marine propulsor.Second kind of mode of operation is to allow magnetic fluid advance passage around its rotation, metal conductive strips and the 14 part conductings of current control parts thereof, and at this moment, the electric current between 8,10 liang of electrodes removes the electric current I of fluid (seawater) of flowing through
1Outside, also have the electric current I of metal conductive strips and current control parts 14 thereof
2, I
2Direction of current and I
1Identical, because I
2With the effect of B, on flow deflector 9, produce the tangential power F of circumference
2, magnetic fluid advances passage 2 at F
2Effect is rotated around its axle down, and hand of rotation is identical with fluid (seawater) flow direction.Regulate electrical current I
2When making rotating speed that magnetic fluid advances passage 2 near the mobile speed of fluid (seawater), relative velocity between fluid (seawater) and the wall significantly reduces, therefore, fluid (seawater) will significantly reduce with the fricting resistance loss of wall, result of calculation shows, the circumferential velocity C of regulation and control magnetic fluid passage rotation
cWith seawater speed V
cRatio C
c/ V
cEqual at 0.8 o'clock, seawater flowing friction loss in magnetic fluid advances passage 2 reduces 87%, thereby magnetic fluid marine propulsor efficient improves 2～3 times.The third mode of operation is complete conducting metal conductive strips and current control parts 14 thereof, its resistance is far smaller than the resistance of fluid in the passage, and the electric current between two electrodes 8,10 almost all flows through metal conductive strips and current control parts 14 thereof, at this moment, the electric current I by fluid in the passage 2
1Almost nil, so the electromagnetic force F in the fluid
1Almost nil.Magnetic fluid advances passage at F
2Under the effect of power, rotate around its axle, magnetic fluid advances the also rotation thereupon of helix flow deflector 9 in the passage, thereby promotes the liquid motion in the magnetic fluid propelling passage 2, fluid is sucked from channel entrance 1, from channel outlet 12 ejections.At this moment, propelling unit has changed the waterjet propulsion that superconducting rotary machine drives spiral pump into, and this magnetic fluid marine propulsor also can be worked in the zone, inland river, has just realized the propulsion of ship of " fresh water " magnetic fluid.
More than three kinds of mode of operations be specially adapted to the propulsion of ship of special purpose, have great value, such as, when need are stealthy, use first kind of mode of operation, with second kind of mode of operation, when entering the inland river fresh water area, use the third mode of operation in the time of need advancing at utmost speed.
Claims (3)
1, a kind of superconduction magnetic fluid marine propulsor, comprise that superconducting solenoid magnet [1] and magnetic fluid advance passage [2], it is characterized in that it is rotatable that magnetic fluid advances passage [2], in magnetic fluid advances the helix flow deflector [9] of passage [2] metal conductive strips and the current control parts [14] thereof that are communicated with two electrodes are housed, the electric current that passes through from metal conductive strips and current control parts [14] thereof produces electromagnetic force with the mutual action in magnetic field makes magnetic fluid advance passage to rotate.
2, according to the described superconduction magnetic fluid marine propulsor of claim 1, it is characterized in that its magnetic fluid advances the helix flow deflector [9] of passage to be made by insulating material, be loaded on the metal conductive strips of connection two electrodes wherein and current control parts [14] thereof along uniform on the helix flow deflector length of run, be communicated with two electrodes from radial direction.
3, according to claim 1 and 2 described superconduction magnetic fluid marine propulsors, it is characterized in that regulating and control by its current control parts by the electric current of metal conductive strips in the helix flow deflector, metal conductive strips and current control parts thereof have three kinds of mode of operations, the one, not conducting, the 2nd, the part conducting, the 3rd, full conducting is when being in first kind of mode of operation, electric current by metal conductive strips is zero, and magnetic fluid advances passage not rotate; When being in second kind of mode of operation, advance the electric current of fluid (seawater) in the passage that certain ratio is arranged, make magnetic fluid advance speed and fluid (seawater) flow velocity in passage of passage rotation approaching by metal conductive strips and magnetic fluid; When being in the third mode of operation, the electric current by metal conductive strips is far longer than the electric current by fluid in the passage (seawater), and passage rotates by the electromagnetic force that this electric current and magnetic field interaction produce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101213702A CN100417575C (en) | 2003-12-16 | 2003-12-16 | Superconductive magnetic fluid marine propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101213702A CN100417575C (en) | 2003-12-16 | 2003-12-16 | Superconductive magnetic fluid marine propeller |
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| Publication Number | Publication Date |
|---|---|
| CN1629036A true CN1629036A (en) | 2005-06-22 |
| CN100417575C CN100417575C (en) | 2008-09-10 |
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| CNB2003101213702A Expired - Fee Related CN100417575C (en) | 2003-12-16 | 2003-12-16 | Superconductive magnetic fluid marine propeller |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336262A (en) * | 2010-11-02 | 2012-02-01 | 唐瑞 | Stud screw impeller propelling device matched with sailing power accelerating device |
| CN102486169A (en) * | 2009-12-12 | 2012-06-06 | 赵明 | High-efficiency axial flow and screw combined pump for ship |
| CN102935885A (en) * | 2012-12-03 | 2013-02-20 | 赵永圣 | Superconducting linear grid high-frequency phase-shifting drive magnetic fluid propeller |
| CN103192971A (en) * | 2012-01-05 | 2013-07-10 | 张广来 | Cylinder type high pressure jetting water rocket adopting rotary shaft propeller blade |
| CN103847946A (en) * | 2014-02-24 | 2014-06-11 | 浙江海洋学院 | Magnetic fluid propelled ship |
| WO2014131351A1 (en) * | 2013-02-28 | 2014-09-04 | Chen Tsuny Ming | Seawater magnetohydrodynamic power generator apparatus |
| CN106005281A (en) * | 2016-06-14 | 2016-10-12 | 华南理工大学 | Ocean floating body dynamic positioning system based on thermoelectric power generation and magnetohydrodynamic propulsion |
| CN106428498A (en) * | 2015-08-07 | 2017-02-22 | 王元知 | Electromagnetic thruster |
| CN106915423A (en) * | 2017-03-23 | 2017-07-04 | 银西兰 | New energy does not sink senior passenger steamer ship |
| CN109572972A (en) * | 2018-11-27 | 2019-04-05 | 中科磁凌（北京）科技有限公司 | Magnetofluid propeller |
| CN110550174A (en) * | 2019-09-25 | 2019-12-10 | 中国科学院电工研究所 | Multi-spiral-channel annular superconducting magnetofluid propeller |
| CN110685922A (en) * | 2019-09-23 | 2020-01-14 | 兰州理工大学 | Centrifugal liquid metal magnetic drive pump of no rotor |
| CN111071421A (en) * | 2020-01-03 | 2020-04-28 | 西北工业大学 | AUV spiral channel propeller |
| CN111361720A (en) * | 2020-03-26 | 2020-07-03 | 中国科学院电工研究所 | Integrated magnetofluid propeller |
| CN111865039A (en) * | 2020-07-23 | 2020-10-30 | 中国科学院电工研究所 | Double-helix combined type channel direct-current magnetofluid pump |
| CN112249288A (en) * | 2020-09-27 | 2021-01-22 | 李新亚 | Seawater electromagnetic accelerator |
| CN113998091A (en) * | 2021-11-03 | 2022-02-01 | 北京航空航天大学 | Multi-electrode array pulse discharge underwater propulsion device |
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| FR2112791A5 (en) * | 1970-11-09 | 1972-06-23 | Alsthom | Electromagnetic pump - needs no moving part to convey liquid which conducts electricity |
| US4514653A (en) * | 1982-04-20 | 1985-04-30 | Batni Prahlada R | Commutatorless direct current machine |
| US5352139A (en) * | 1989-05-24 | 1994-10-04 | Gunther Laukien | Method and apparatus for the propulsion of water vehicles |
| JP3114074B2 (en) * | 1991-06-21 | 2000-12-04 | 株式会社日立製作所 | Medical diagnostic equipment |
| CN2266564Y (en) * | 1996-08-12 | 1997-11-05 | 中国科学院电工研究所 | Parallel solenoid superconducting magnet combined magnetic fluid seawater thruster |
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- 2003-12-16 CN CNB2003101213702A patent/CN100417575C/en not_active Expired - Fee Related
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486169A (en) * | 2009-12-12 | 2012-06-06 | 赵明 | High-efficiency axial flow and screw combined pump for ship |
| CN102486169B (en) * | 2009-12-12 | 2015-06-03 | 赵明 | High-efficiency axial flow and screw combined pump for ship |
| CN102336262A (en) * | 2010-11-02 | 2012-02-01 | 唐瑞 | Stud screw impeller propelling device matched with sailing power accelerating device |
| CN103192971A (en) * | 2012-01-05 | 2013-07-10 | 张广来 | Cylinder type high pressure jetting water rocket adopting rotary shaft propeller blade |
| CN102935885A (en) * | 2012-12-03 | 2013-02-20 | 赵永圣 | Superconducting linear grid high-frequency phase-shifting drive magnetic fluid propeller |
| CN102935885B (en) * | 2012-12-03 | 2015-04-08 | 赵永圣 | Superconducting linear grid high-frequency phase-shifting drive magnetic fluid propeller |
| WO2014131351A1 (en) * | 2013-02-28 | 2014-09-04 | Chen Tsuny Ming | Seawater magnetohydrodynamic power generator apparatus |
| CN103847946B (en) * | 2014-02-24 | 2017-05-10 | 浙江海洋学院 | Magnetic fluid propelled ship |
| CN103847946A (en) * | 2014-02-24 | 2014-06-11 | 浙江海洋学院 | Magnetic fluid propelled ship |
| CN106428498A (en) * | 2015-08-07 | 2017-02-22 | 王元知 | Electromagnetic thruster |
| CN106005281B (en) * | 2016-06-14 | 2018-06-29 | 华南理工大学 | The ocean floating body dynamic positioning system promoted based on thermo-electric generation and magnetic fluid |
| CN106005281A (en) * | 2016-06-14 | 2016-10-12 | 华南理工大学 | Ocean floating body dynamic positioning system based on thermoelectric power generation and magnetohydrodynamic propulsion |
| CN106915423A (en) * | 2017-03-23 | 2017-07-04 | 银西兰 | New energy does not sink senior passenger steamer ship |
| CN109572972A (en) * | 2018-11-27 | 2019-04-05 | 中科磁凌（北京）科技有限公司 | Magnetofluid propeller |
| CN109572972B (en) * | 2018-11-27 | 2020-01-17 | 中科磁凌（北京）科技有限公司 | Magnetofluid propeller |
| CN110685922A (en) * | 2019-09-23 | 2020-01-14 | 兰州理工大学 | Centrifugal liquid metal magnetic drive pump of no rotor |
| CN110550174B (en) * | 2019-09-25 | 2020-07-07 | 中国科学院电工研究所 | Multi-spiral-channel annular superconducting magnetofluid propeller |
| CN110550174A (en) * | 2019-09-25 | 2019-12-10 | 中国科学院电工研究所 | Multi-spiral-channel annular superconducting magnetofluid propeller |
| CN111071421A (en) * | 2020-01-03 | 2020-04-28 | 西北工业大学 | AUV spiral channel propeller |
| CN111361720A (en) * | 2020-03-26 | 2020-07-03 | 中国科学院电工研究所 | Integrated magnetofluid propeller |
| CN111865039A (en) * | 2020-07-23 | 2020-10-30 | 中国科学院电工研究所 | Double-helix combined type channel direct-current magnetofluid pump |
| CN111865039B (en) * | 2020-07-23 | 2021-05-28 | 中国科学院电工研究所 | Double-helix combined type channel direct-current magnetofluid pump |
| CN112249288A (en) * | 2020-09-27 | 2021-01-22 | 李新亚 | Seawater electromagnetic accelerator |
| CN113998091A (en) * | 2021-11-03 | 2022-02-01 | 北京航空航天大学 | Multi-electrode array pulse discharge underwater propulsion device |
| CN113998091B (en) * | 2021-11-03 | 2022-11-11 | 北京航空航天大学 | Multi-electrode array pulse discharge underwater propulsion device |
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