JPH075118B2 - Electromagnetic propulsion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to an electromagnetic propulsion device using an exciting coil in a superconducting state and used, for example, in propulsion of a ship.

(Prior Art) As a conventional propulsion device, for example, an internal combustion engine, a general electric motor, or the like is used to rotate a screw or to feed water backward by a pump or the like to obtain a propulsive force.

In addition, a device using an exciting coil in a superconducting state is becoming a reality as a device that electrically obtains a propulsive force. And, as the configuration using the exciting coil in the super-electrical state, the thrust is generated by the electromagnetic force by the magnetic flux of the exciting coil in the superconducting state excited by direct current and the direct current passed through seawater at right angles to this magnetic flux. There are a direct current method for generating and a alternating current method for generating thrust by an electromagnetic force of an alternating magnetic flux of an exciting coil in a superconducting state excited by an alternating current and an induced current induced in seawater by the alternating magnetic flux.

(Problems to be Solved by the Invention) However, in the above-mentioned direct current method, direct current excitation is performed on the exciting coil in the superconducting state, a large current is maintained in the exciting coil as it is, and the conductive liquid such as seawater is always maintained. Although a high-density magnetic flux can be transmitted, it is necessary to immerse the electrode pair in seawater and apply a DC voltage in order to pass an electric current through the seawater. For this reason, the electrodes are polarized, and hydrogen gas, chlorine gas, etc. are generated from each electrode in response to the energized current, and the electrodes themselves are
It has problems such as corrosion in response to generation of chlorine gas.

In the AC method, a voltage is induced in seawater to flow an induction current, and no electrodes are used, so there is no problem of gas generation or electrode corrosion, but it is not possible to induce a large AC voltage in seawater by AC magnetic flux. Can not. In other words, when seawater is replaced by an equivalent circuit, the conductivity of seawater is much smaller than that of metal, and the number of turns is one. Therefore, the induced current generated by the voltage induced in seawater is a large current. However, it has a problem that it is very difficult to obtain a large driving force.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an electromagnetic propulsion device that can obtain a large propulsive force and high efficiency and is easy to maintain.

[Structure of Invention]

(Means for Solving the Problems) The electromagnetic propulsion device of the present invention has an insulating cylindrical body having open both end surfaces and through which a conductive fluid can flow, and a DC body disposed in the cylindrical body and excited by direct current. And a plurality of electrode pairs provided in the cylindrical body, and a magnetic flux of the exciting coil and an alternating current flowing through the liquid through the electrode pairs, in which the relative directions are always constant and orthogonal to each other. And rotating at least one of the exciting coil and the electrode pair, applying an AC voltage to the electrode pair to cause a current to flow in the liquid, by the magnetic flux generated by the exciting coil and the current of the liquid. The electromagnetic force is generated to relatively move the liquid to obtain a propulsion force.

(Operation) In the present invention, the exciting coil is subjected to direct current excitation in a superconducting state, a permanent current is caused to flow and a magnetic flux having a high magnetic flux density is generated, and one of the exciting coil and the electrode pair is rotated, and the magnetic flux is applied to the electrode pair. The magnetic flux generated between the exciting coils and the current flowing between the electrode pairs are always orthogonalized by applying the AC voltage synchronized with the above, and the liquid in the cylinder is moved in the axial direction of the cylinder by Fleming's law. As a result, the generation of gas due to the polarization action and the corrosion phenomenon of the electrode pair are prevented by supplying an alternating current to the electrode pair while obtaining the propulsion force.

Embodiment An embodiment of the electromagnetic propulsion device of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes an electromagnetic propulsion device main body, which has an insulating cylindrical body 2 having a circular cross section, and the cylindrical body 2 is open at both end surfaces. Seawater, which is a liquid having conductivity inside, is freely flowable. On the outer circumference of the tubular body 2, exciting coils 3 are provided so as to face different polarities and are rotatable in the circumferential direction of the tubular body 2. Further, on the inner circumference of the cylindrical body 2, an electrode pair 5 formed of two electrodes 6 and 6 arranged in the same manner as an electrode pair 5 formed of two electrodes 4 and 4 arranged opposite to each other. And are provided orthogonally.

First, the exciting coil 3 is brought into a superconducting state by, for example, cooling, a direct current is applied to the exciting coil 3 in the superconducting state to excite a direct current with a permanent current, and the outer circumference of the cylindrical body 2 is shown in FIG. Rotate clockwise. And
Two-phase AC voltages having 90 ° different phases synchronized with the rotation of the exciting coil 3 are applied to the opposing electrode pair 5 and electrode pair 7. That is, when the exciting coil 3 rotates and the current I by the electrode pair 5 or the electrode pair 7 is orthogonal to the magnetic flux B between the exciting coils 3, the maximum current I flows at this orthogonal position and the maximum electromagnetic force is generated. An alternating current with a frequency synchronized so that F is obtained is used. Then, when the magnetic flux B and the current I of seawater intersect, an electromagnetic force F, which is the product of the magnetic flux B and the current I, is generated according to Fleming's left-hand rule, and the liquid is sent out, and the propulsive force is applied in the longitudinal direction of the tubular body 2. To get

The frequency of the synchronized AC applied to the electrode pair 5 and the electrode pair 7 is not limited to the commercial AC frequency, and a low frequency of about several Hz is mechanically superior. This is because, according to the experiment, the relationship between the frequency and the volume of the generated gas is that the volume of the generated gas decreases exponentially as the frequency increases, as shown in FIG. Deterioration such as corrosion of the electrodes 4, 4 and the electrodes 6, 6 of the pair 5 and the electrode pair 7 is also due to an exponential decrease due to an increase in the frequency, although not so much as the volume of the generated gas. Further, if the frequency is low, the rotation speed of the exciting coil 3 is low, so that the structure of the rotary drive mechanism becomes easy.

Then, as shown in FIG. 4, the electromagnetic propulsion device main body 1 is provided below the waterline of the ship 11 and communicates with the front end of the ship 11 and the water conduit 12 of the ship 11. It is arranged by connecting the cylindrical body 2 between the drain pipes 13 communicating with the rear end.

Further, as shown in FIG. 3, a plurality of electromagnetic propulsion device main bodies 1 may be provided in series. In this way, if a plurality of electromagnetic propulsion device main bodies 1 are provided in series, it is possible to easily cope with the required propulsion force.

Further, the exciting coil 3 is not limited to one pair, and the electrode pairs 5 and 7 are not limited to two pairs, and the numbers of electrode pairs and exciting coils can be arbitrarily set according to the number of phases of the power supply.

In addition, it is an optimal propulsion device for submersibles, etc., because it has no noise and does not have a problem of exhaust gas.

Next, another embodiment will be described with reference to FIGS. 5 and 6.

The electromagnetic propulsion device body 1 includes a cylindrical body 2 which is rotatable about a cylindrical axis between a pair of exciting coils 3 provided to face each other.
2 are provided on the inner circumference of the cylindrical body 2 including an electrode pair 5 including electrodes 4 and 4 and an electrode pair 7 including electrodes 6 and 6 orthogonal to the electrode pair 5. Also, each electrode 4,
On the outer circumference on the slightly end side of the cylindrical body 2 at an angle corresponding to 6, one current collector plate 15 is provided for each of the electrodes 4 and 6 each having a length of about 1/4 or less. The electrodes 4 and 6 are electrically connected to the collector plates 15 at corresponding angles. Further, a brush 16 is provided on the current collector plate 15 so as to face the exciting coil 3 at a position orthogonal to the exciting coil 3.

Then, a DC voltage is applied to the exciting coil 3 in the superconducting state, and DC excitation is performed with a permanent current. Further, while rotating the cylindrical body 2, a DC voltage is applied from the facing brush 16 to the facing current collector plate 15, and a current is caused to flow sequentially from the electrode pair 5 and the electrode pair 7 to seawater. Then, an electromagnetic force F is generated by the magnetic flux B of the exciting coil 3 and the current I of seawater, and the seawater is discharged to obtain a propulsive force.

According to such a configuration, since the pair of the exciting coils 3 and the pair of the brushes 16 are orthogonal to each other, the magnetic flux B and the current I are always substantially orthogonal to each other, so that the electromagnetic force F can always be efficiently obtained.
Further, when the electrode pair 5 and the electrode pair 7 themselves rotate, the polarity applied to the electrodes 4 and 6 changes due to the rotation and is changed even when a direct current is applied from the brush 16, so that the cylinder 2 is rotated. In doing so, it is possible to easily construct without needing to synchronize the alternating current, the rotational speed of the cylindrical body 2 can be arbitrarily determined, and uneven rotation is not a problem. Further, considering each of the electrodes 4 and 6, a voltage of different polarity, that is, an AC voltage, is applied to each of the electrodes 4 and 6 while the electrodes 4 and 6 make one round, so that generation of gas or the like may occur. The problem of corrosion of the electrodes 4 and 6 does not occur.

Further, another embodiment will be described with reference to FIGS. 7 and 8.

In this electromagnetic propulsion device main body 1, two pairs of electrodes 5 and 7 in which electrodes 4, 4 or electrodes 6, 6 are provided so as to face each other on the inner circumference of a tubular body 2 are orthogonally provided. Further, inside the cylindrical body 2, an insulating inner cylinder 18 is provided coaxially with the cylindrical body 2 so as to be rotatable about this axis and closed at both ends and having an exciting coil 3 inside.

Then, a DC voltage is applied to the exciting coil 3 in the superconducting state, and DC excitation is performed with a permanent current. At this time, the exciting coil 3 is rotated with or without the inner cylinder 18 around the cylinder axis of the inner cylinder 18. Then, a two-phase alternating current having a phase difference of 90 ° synchronized with the rotation of the exciting coil 3 is applied to the respective electrode pairs 5 and 7 so that the current I is always orthogonal to the magnetic flux B. Then, an electromagnetic force F is generated by the magnetic flux B of the exciting coil 3 and the current I of seawater, and the seawater is discharged to obtain a propulsive force.

Still another embodiment will be described with reference to FIGS. 9 and 10.

The electromagnetic propulsion device main body 1 is provided with an inner cylinder 18 having both ends closed and having an exciting coil 3 therein, and a rotatable cylindrical body 2 coaxial with the inner cylinder 18. Further, electrode pairs 5 are provided on the inner circumference of the cylindrical body 2 so as to face each other.
And the electrode pair 7 are provided orthogonally to each other, and a current collector plate 15 electrically connected to the electrode 4 of the electrode pair 5 and the electrode 6 of the electrode pair 7 is provided on the outer periphery of the current collector plate 15. The brush 16 is in contact with the brush.

Then, a DC voltage is applied to the exciting coil 3 in the superconducting state, and DC excitation is performed with a permanent current. At this time, by applying a direct current from the brush 16 to the collector plate 15 and rotating the cylindrical body 2, an alternating current flows through the electrodes 4 and 6 while the electrodes 4 and 6 make one round. Prevents gas generation and electrolytic corrosion of electrodes 4 and 6. Then, an electromagnetic force F is generated by the magnetic flux B of the exciting coil 3 and the current I of seawater, and the seawater is discharged to obtain a propulsive force.

Further, another embodiment will be described with reference to FIGS. 11 and 12.

In this electromagnetic propulsion device main body 1, exciting coils 3 having an opposite polarity with the same polarity and adjacent polarities with different polarities are rotatably provided on the outer circumference of the cylinder 2 at the outer circumference of the cylinder 2. Also,
Electrodes 4 and electrodes 6 are alternately provided at every 45 ° on the inner circumference of the cylindrical body 2, and the electrodes 4, 4 and electrodes 6, 6 placed one by one are arranged at an electrode angle of 5 ° and an electrode pair of 7 at an electrical angle of 45 °. Are configured. Then, a two-phase alternating current synchronized with the rotation of the exciting coil 3 is applied to the electrode pairs 5, 7.

Then, in the superconducting state, a DC voltage is applied to the exciting coil 3 and a permanent current is used to excite the DC, rotating the exciting coil 3 and applying alternating current synchronized with the rotation of the exciting coil 3 to the electrodes 4 and 6, respectively. . At this time, the current I and the magnetic flux B are necessarily orthogonal to each other. Then, an electromagnetic force F is generated by the magnetic flux B of the exciting coil and the current I of the seawater, and the seawater is discharged to obtain the propulsive force.

In this way, if the number of poles of the exciting coil 3 is increased, the magnetic flux B and the current I at the axis of the cylinder decrease, but it is useful for reducing the relative rotation speed of the exciting coil 3.

Further, in any of the embodiments, although the cylindrical body 2 or the exciting coil 3 is rotated, the power required for the rotation is about the frictional force of the rotation as compared with the case of directly pressing the liquid with a screw or the like, so that the force is very small. Good.

〔The invention's effect〕

According to the electromagnetic propulsion device of the present invention, the exciting coil is DC-excited in the superconducting state, and a voltage of only a certain polarity is not applied to the electrode pair, that is, a DC current in only a certain direction does not flow. Can be prevented and electrolytic corrosion of the electrodes can be prevented, and a large propulsive force can be obtained by passing a large current under a high-density magnetic flux, and further maintenance can be facilitated.

[Brief description of drawings]

1 is a partially cutaway side view showing an embodiment of an electromagnetic propulsion device of the present invention, FIG. 2 is a sectional view of the same as above, and FIG. 3 is an explanatory view of a case in which a plurality of electromagnetic propulsion devices are attached. FIG. 4 is an explanatory view when the electromagnetic propulsion device is attached to the hull, FIG. 5 is a partially cutaway side view showing another embodiment, FIG. 6 is a sectional view of the same as above, and FIG. FIG. 8 is a partially cutaway side view showing another embodiment of the present invention, FIG. 8 is a partially cutaway side view showing another embodiment of the present invention, and FIG. FIG. 11 is a partially cutaway side view showing still another embodiment, FIG. 12 is a sectional view of the same as above, and FIG. 13 is a graph showing the relationship between gas generation and frequency. 2 ... Cylindrical body, 3 ... Excitation coil, 5,7 ... Electrode pair, 15 ...
… Current collector, 16 …… Brush, B …… Magnetic flux, F …… Electromagnetic force,
I ... current.

Claims (5)

[Claims] 1. An insulative cylinder having open both ends to allow a conductive liquid to flow therein, an exciting coil disposed in the cylinder and excited by direct current, and provided in the cylinder. A plurality of electrode pairs, and a magnetic flux of the exciting coil and an alternating current flowing through the liquid through the electrode pair are supplied in a cycle in which relative directions are always constant and orthogonal, and at least the exciting coil and the electrode pair. One of them is rotated, an AC voltage is applied to the electrode pair to cause a current to flow in the liquid, and the liquid is relatively moved by a magnetic flux generated by the exciting coil and an electromagnetic force generated by the current of the liquid. An electromagnetic propulsion device that is characterized by gaining propulsion power. 2. An exciting coil rotates circumferentially around the outer circumference of a cylindrical body to generate a magnetic flux in a rotating state, an electromagnetic pair is fixed, and an alternating current flowing from the electrode pair to a liquid is the magnetic flux. The electromagnetic propulsion device according to claim 1, wherein the direction is relatively constant with respect to and orthogonal to. 3. An exciting coil is disposed so as to face an outer circumference of a cylindrical body, the cylindrical body is rotatably provided between the exciting coils, and a plurality of electrode pairs are opposed to the inner circumference of the cylindrical body. A current collector plate that is provided on the outer periphery of the cylindrical body and that corresponds to the electrode pair, and a brush that is provided at a position orthogonal to the exciting coil and is in sliding contact with the facing current collector plate. The electromagnetic propulsion device according to claim 1, wherein the brush sequentially supplies a direct current to the rotating current collector plate as the current collector plate of the rotating cylinder body rotates. 4. An exciting coil is rotatably provided on a central axis of a cylindrical body, an electrode pair is fixed to an inner circumference of the cylindrical body, and an alternating current flowing through the electrode pair is a rotating magnetic flux generated by the rotation of the exciting coil. The electromagnetic propulsion device according to claim 1, characterized in that the electromagnetic propulsion device is orthogonal to and is synchronized with the rotating magnetic flux. 5. An exciting coil is fixed to a central axis of a cylindrical body, the cylindrical body is rotatably provided with the exciting coil as a central axis, and is provided on an outer periphery of the cylindrical body corresponding to the electrode pair. A current collector plate provided, and a brush provided at a position orthogonal to the magnetic flux direction of the exciting coil and slidingly contacting the facing current collector plate, wherein the brush is a collector plate of the rotating tubular body. The electromagnetic propulsion device according to claim 1, wherein a DC current is sequentially supplied to the rotating current collector plate as the rotor rotates.