CN107359775B - A kind of liquid-metal MHD generator - Google Patents
A kind of liquid-metal MHD generator Download PDFInfo
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- CN107359775B CN107359775B CN201710507288.5A CN201710507288A CN107359775B CN 107359775 B CN107359775 B CN 107359775B CN 201710507288 A CN201710507288 A CN 201710507288A CN 107359775 B CN107359775 B CN 107359775B
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- 229910001338 liquidmetal Inorganic materials 0.000 title claims abstract description 60
- 239000004020 conductor Substances 0.000 claims description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- 229910000574 NaK Inorganic materials 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 4
- 229910001128 Sn alloy Inorganic materials 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 229910052733 gallium Inorganic materials 0.000 claims description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052753 mercury Inorganic materials 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 4
- 239000011591 potassium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 2
- 238000010248 power generation Methods 0.000 abstract description 16
- 230000005611 electricity Effects 0.000 abstract description 7
- 238000003860 storage Methods 0.000 abstract description 7
- 230000006698 induction Effects 0.000 abstract description 6
- 238000005520 cutting process Methods 0.000 abstract description 5
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 18
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000005300 metallic glass Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K44/00—Machines in which the dynamo-electric interaction between a plasma or flow of conductive liquid or of fluid-borne conductive or magnetic particles and a coil system or magnetic field converts energy of mass flow into electrical energy or vice versa
- H02K44/08—Magnetohydrodynamic [MHD] generators
- H02K44/085—Magnetohydrodynamic [MHD] generators with conducting liquids
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K44/00—Machines in which the dynamo-electric interaction between a plasma or flow of conductive liquid or of fluid-borne conductive or magnetic particles and a coil system or magnetic field converts energy of mass flow into electrical energy or vice versa
- H02K44/08—Magnetohydrodynamic [MHD] generators
- H02K44/16—Constructional details of the magnetic circuits
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention provides a kind of liquid-metal MHD generator, comprising: moving component, the first permanent magnet, the second permanent magnet, conductive sheet and liquid metal；Wherein, first permanent magnet is located inside the moving component；Second permanent magnet is located at outside the moving component；Wherein, first permanent magnet and second permanent magnet is heteropolar opposite；The liquid metal is located at the inside of the moving component, and conductive sheet of the liquid metal inside the first permanent magnet surrounding and the moving component forms the circuit of closure；The circuit of the closure is cut in the moving component rotary motion, generates induced current in the circuit of the closure.Liquid-metal MHD generator provided by the invention generates electricity using its cutting magnetic induction line, conducting wire is recycled to be introduced into electricity reception device using the electrically conductive property of liquid metal, thus have the function that power generation, the power generation electric power storage that can be used in daily life.
Description
Technical Field
The invention relates to the technical field of generators, in particular to a liquid metal magnetohydrodynamic generator.
Background
The novel Liquid Metal Magnetohydrodynamic (LMMHD) generator directly drives Liquid Metal to reciprocate linearly in a power generation channel by adopting alternative external force, such as internal combustion force and wave force of an automobile, so as to cut magnetic lines of force and generate alternating current electric energy. Compared with the traditional LMMHD power generation system, such as a two-phase flow power generation system and a single-phase flow power generation system, the novel LMMHD generator adopts a directly-driven and single-phase liquid metal power generation working medium, does not need additional energy and equipment to maintain good conductivity of a working fluid, has a simple structure, large power density and high efficiency, and has wide application prospect in a hybrid electric vehicle, a distributed power supply and a wave energy direct power generation system.
In the existing magnetic fluid generator, heat energy is utilized to heat plasma, and then the plasma generates electromotive force through a magnetic field to directly obtain electric energy without conversion from the heat energy to mechanical energy, so that the utilization efficiency of the heat energy can be improved.
In the existing magnetohydrodynamic generator, the materials of the channel and the electrode are required to be resistant to high temperature, alkali corrosion, chemical corrosion and the like, and the service life of the materials used at present is short, so that the magnetohydrodynamic generator cannot operate for a long time.
Disclosure of Invention
To at least partially overcome the above problems in the prior art, the present invention provides a liquid metal mhd generator.
According to one aspect of the invention there is provided a liquid metal magnetohydrodynamic generator comprising: the device comprises a moving part, a first permanent magnet, a second permanent magnet, a conducting strip and liquid metal; wherein the first permanent magnet is located inside the moving part; the second permanent magnet is positioned outside the moving part; wherein the opposite poles of the first permanent magnet and the second permanent magnet are opposite; the liquid metal is positioned in the moving part, and the liquid metal forms a closed circuit with a conducting strip in the moving part around the first permanent magnet; the rotating motion of the moving part cuts the closed circuit, and an induced current is generated in the closed circuit.
Wherein, still include: an electric quantity receiving device; the electric quantity receiving device is connected with the conducting strip through a wire.
Wherein the number of the second permanent magnets is two, and the second permanent magnets are respectively arranged on two sides of the moving part; the number of the first permanent magnets is four, two first permanent magnets are arranged on one side of the moving part, and the other two first permanent magnets are arranged on the other side of the moving part; wherein the two first permanent magnets arranged on the same side of the moving part are opposite in homopolar direction; the liquid metal forms a closed circuit with the conducting strips in the moving part around the four first permanent magnets; the rotating motion of the moving part cuts the closed circuit, and an induced current is generated in the closed circuit.
The second permanent magnet is a cuboid, a cylinder or a block body with an upper plane and a lower plane; the first permanent magnet is a cuboid; the first permanent magnet and the second permanent magnet are both arranged in parallel to construct a parallel magnetic field.
Wherein the moving part includes: the device comprises a first thread buckle, a bearing, a rotating main body and a second thread buckle; the first threaded buckle is connected with one end of the bearing; the second threaded buckle is connected with the other end of the bearing; the bearing is connected with the rotating body.
The area of the second permanent magnet meets the requirement of covering the area of a part of the plane where the first permanent magnet is located, which passes through the plane and rotates for a circle; the length of the first permanent magnet is the distance from the bearing to one end, far away from the bearing, in the rotating body, and the width of the first permanent magnet is the width of the closed circuit.
Wherein the rotating body is composed of at least one pair of blades, and the structure of the rotating body is symmetrical; wherein, the material of the blade is ceramic or plastic steel.
Wherein the conductive sheet includes: the circular insulation layer, the circular conductor and the circular conductor; wherein the circular conductor is connected with the annular insulating layer; the ring insulating layer is connected with the ring conductor.
Wherein the liquid metal is one of gallium, sodium, potassium, mercury, potassium-sodium alloy or gallium-indium-tin alloy.
Wherein a hole is formed in the moving member, and the liquid metal is poured into the moving member through the hole; wherein the cross-sectional shape of the hole is a circle, a square or an arbitrary closed polygon.
In summary, the magnetohydrodynamic liquid metal generator provided by the invention utilizes the electrical conductivity of the liquid metal, utilizes the cutting magnetic induction lines to generate electric quantity, and then utilizes the lead to lead the electric quantity into the electric quantity receiving device, thereby achieving the effect of generating electricity and being used for generating electricity and storing electricity in daily life.
Drawings
FIG. 1 is a schematic diagram of a liquid metal magnetohydrodynamic generator according to an embodiment of the invention;
FIG. 2 is a schematic diagram of the structure of moving parts in a liquid metal magnetohydrodynamic generator according to an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a conducting strip in a liquid metal magnetohydrodynamic generator according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In one embodiment of the invention, with reference to fig. 1 and 2, a liquid metal magnetohydrodynamic generator comprises: the device comprises a moving part 1, a first permanent magnet, a second permanent magnet, a conducting strip 6 and liquid metal 9; wherein,
the first permanent magnet is positioned inside the moving part 1;
the second permanent magnet is positioned outside the moving part 1; wherein,
the opposite poles of the first permanent magnet and the second permanent magnet are opposite;
the liquid metal 9 is positioned inside the moving part 1, and the liquid metal 9 forms a closed circuit with the conducting strip 6 inside the moving part 1 around the first permanent magnet;
the rotary motion of the moving part 1 cuts the closed circuit, generating an induced current in the closed circuit.
In recent years, power generation by electromagnetic induction has been used in large quantities in various aspects of our production and life. Electromagnetic induction, which is a conductor placed in a changing magnetic flux, generates an electromotive force. Faraday found that the electromotive force (EMF for short) generated in a closed loop is proportional to the rate of change of magnetic flux on any curved surface enclosed by the path, which means that current will flow in any closed conductor when the magnetic flux through the curved surface enclosed by the conductor changes, suitable when the field itself changes or the conductor moves in the field. Electromagnetic induction is the basis for the operation of generators, induction motors, transformers, and most other electrical equipment.
Preferably, the liquid metal mhd generator further comprises a power receiving device 8; in this embodiment, an E12 type capacitor is used to collect the electricity generated by the liquid metal mhd generator.
Wherein the liquid metal 9 solidifies to form a conductor, thereby forming a closed circuit with the conductive sheet 6; the liquid metal 9 can solidify to form a variety of shapes of conductor.
Wherein, the conducting strip 6, the conducting wire 7 and the electric quantity receiving device 8 form a loop.
Wherein, the moving part 1 can rotate in a plane, the moving part 1 is given a tangential force along the rotating direction thereof by manpower, the moving part 1 rotates rapidly in the plane, and the cutting of the closed circuit generates induced current.
The area of the second permanent magnet meets the area of the part, passing through the first permanent magnet, of the plane in which the first permanent magnet is located after rotating for one circle.
Specifically, the second permanent magnet is disposed above or below the moving part 1; the first permanent magnet is arranged inside the moving part 1; the first permanent magnet and the second permanent magnet are opposite in opposite poles and are arranged in parallel to construct a parallel magnetic field; the liquid metal 9 is positioned in the moving part 1, and a closed circuit is formed around the first permanent magnet and the conducting strip 6 in the moving part 1; the electric quantity receiving device 8 is connected with the two poles of the conducting strip 6 arranged inside the moving part 1 through two leads 7; according to the principle of centrifugal motion, when the moving part 1 does non-linear motion, because the moving part 1 has mass, the inertia caused by the mass can force the moving part 1 to continuously move towards the tangential direction of the motion track, so that the moving part 1 rotates at high speed under the action of the configured centrifugal force; the closed circuit is cut, an induced current is generated in the closed circuit, and the current is introduced into the power receiving device 8 through the wire 7.
The embodiment provides a liquid metal magnetohydrodynamic generator, which utilizes the conductivity of liquid metal, utilizes the cutting magnetic induction lines to generate electric quantity, and then utilizes a lead to lead the electric quantity into an electric quantity receiving device, thereby achieving the effect of power generation and being used for power generation and storage in daily life.
In another embodiment of the present invention, on the basis of the above embodiment, the number of the second permanent magnets is two, and the second permanent magnets are respectively arranged on both sides of the moving part 1;
the number of the first permanent magnets is four, two first permanent magnets are arranged on one side of the moving part 1, and the other two first permanent magnets are arranged on the other side of the moving part 1; wherein the two first permanent magnets arranged on the same side of the moving part 1 are opposite in homopolar direction;
the liquid metal forms a closed circuit with the conducting strips 6 in the moving part 1 around the four first permanent magnets;
the rotary motion of the moving part 1 cuts the closed circuit, generating an induced current in the closed circuit.
Preferably, the second permanent magnet includes a permanent magnet 2 disposed above the moving part 1 and a permanent magnet 3 disposed below the moving part 1;
preferably, the first permanent magnet comprises a permanent magnet 4 and a permanent magnet 5 arranged inside the moving part 1; the permanent magnet 4 comprises two permanent magnets which are arranged in parallel, and the two permanent magnets have the same poles opposite to each other; the permanent magnet 5 comprises two permanent magnets which are arranged in parallel, and the two permanent magnets have the same poles opposite to each other; the areas of the permanent magnets 2 and 3 satisfy the area covering the part of the plane where the permanent magnets 4 and 5 pass through after rotating for one circle.
Preferably, the permanent magnets 2, 3 are placed in parallel with the permanent magnet 4; the permanent magnet 2, the permanent magnet 3 and the permanent magnet 5 are placed in parallel; the permanent magnet 2 and the permanent magnet 3 are arranged in parallel; opposite poles of the first permanent magnet and the second permanent magnet are opposite to each other, so that a parallel magnetic field is constructed; wherein, the magnetic field direction is perpendicular to the moving plane direction of the moving component 1.
Specifically, the permanent magnets 2 and 3 are arranged in parallel above and below the moving part 1, respectively; the permanent magnets 4 and 5 are arranged inside the moving part 1; the permanent magnet 2, the permanent magnet 4 and the permanent magnet 5 are arranged in parallel; the permanent magnet 3, the permanent magnet 4 and the permanent magnet 5 are arranged in parallel; opposite poles of the first permanent magnet and the second permanent magnet are opposite to each other, so that a parallel magnetic field is constructed; the liquid metal 9 is positioned in the moving part 1, and a closed circuit is formed around the first permanent magnet and the conducting strip 6 in the moving part 1; the electric quantity receiving device 8 is connected with the two poles of the conducting strip 6 arranged inside the moving part 1 through two leads 7; according to the principle of centrifugal motion, when the moving part 1 does non-linear motion, because the moving part 1 has mass, the inertia caused by the mass can force the moving part 1 to continuously advance towards the tangential direction of the motion track, so that the moving part 1 rotates at high speed under the action of the configured centrifugal force to cut a closed circuit, induced current is generated in the closed circuit, and the current is introduced into the electric quantity receiving device 8 through the lead 7. The current is led to the charge receiving means 8 via the conductor 7.
The embodiment provides a liquid metal magnetohydrodynamic generator, wherein two sides of a moving part are respectively provided with a second permanent magnet, two sides of the inside of the moving part are respectively provided with a first permanent magnet, the liquid metal is utilized to cut magnetic induction lines to generate electric quantity, and then the liquid metal is led into an electric quantity receiving device by utilizing a conducting wire, so that the effect of power generation is achieved, the liquid metal magnetohydrodynamic generator can be used for power generation and power storage in daily life, and the structure can improve the efficiency of power generation and power storage and generate more electric energy.
In a further embodiment of the present invention, based on the above embodiment, the second permanent magnet is a cuboid, a cylinder or a block with upper and lower planes;
the first permanent magnet is a cuboid;
the first permanent magnet and the second permanent magnet are both arranged in parallel to construct a parallel magnetic field.
Specifically, the permanent magnets 2 and 3 are cuboids, cylinders or blocks with an upper plane and a lower plane; the permanent magnet 4 and the permanent magnet 5 are cuboids; the permanent magnet 2, the permanent magnet 4 and the permanent magnet 5 are arranged in parallel; the permanent magnet 3, the permanent magnet 4 and the permanent magnet 5 are arranged in parallel.
In still another embodiment of the present invention, on the basis of the above-described embodiment, the moving member includes: a first turnbuckle 11, a bearing, a rotating body 15 and a second turnbuckle 16; wherein,
the first threaded buckle 11 is connected with one end of the bearing;
the second thread buckle 16 is connected with the other end of the bearing;
said bearing being connected to said rotating body 15.
The bearing comprises a bearing inner ring 12, a bearing outer ring 14 and rolling bodies 13. Preferably, the rolling elements 13 are steel balls.
The first thread 11 and the second thread 16 are used for fixing the bearing and the rotating body 15, and also as a handheld structure of the moving part 1.
Specifically, the first thread button 11 is connected with the bearing inner ring 12; the bearing inner ring 12 is connected with the bearing outer ring 14 through steel balls 13; the second thread button 16 is connected with the bearing inner ring 12; the bearing inner ring 12 is connected with the bearing outer ring 14 through steel balls 13; the bearing is connected to the rotating body 15.
The embodiment provides a liquid metal magnetohydrodynamic generator, and the intermediate position of the rotating body is connected by a bearing, and the bearing receives less friction force in the rotating process, so that the rotating body can be ensured to be capable of maintaining the rotation for a long time under the condition of not continuously giving force.
In still another embodiment of the present invention, referring to fig. 3, on the basis of the above embodiment, the conductive sheet 6 includes: a circular insulating layer 62, a circular conductor 61, and a circular conductor 63; wherein,
the circular conductor 61 is connected with the annular insulating layer 62;
the annular insulating layer 62 is connected to the annular conductor 63.
The circular conductor 61 and the circular conductor 63 are both good conductive conductors. For always conducting the circuit during rotation of the rotating body.
Specifically, the circular conductor 61 is connected with the annular insulating layer 62; the ring insulating layer 62 is connected to the ring conductor 63.
In yet another embodiment of the present invention, based on the above embodiment, the liquid metal is one of gallium, sodium, potassium, mercury, a potassium-sodium alloy, or a gallium-indium-tin alloy.
The liquid metal refers to an amorphous metal, and the liquid metal can be regarded as a mixture consisting of a positive ionic fluid and free electrons. The liquid metal exhibits hydraulic properties such as viscous fluid flow, unsteady flow, flow in perforated pipes, turbulent flow, and the like.
Preferably, the liquid metal is one of gallium, sodium, potassium, mercury, a potassium-sodium alloy or a gallium-indium-tin alloy.
In a further embodiment of the invention, on the basis of the above embodiment, a hole is made in the moving part 1, through which hole the liquid metal 9 is poured into the interior of the moving part 1; wherein,
the cross section of the hole is in a shape of a circle, a square or an arbitrary closed polygon.
The conductor formed by the liquid metal 9 in the moving member 1 does not intersect with the conductive sheet 6, and a closed circuit can be formed.
Specifically, the positions of the holes on the moving part 1 are distributed around the outer edge of the bearing without passing through the inside of the bearing, and the liquid metal 9 is poured into the inside of the moving part 1 through the holes, and the cross-sectional shape of the holes is circular, square or any closed polygon.
In a further embodiment of the invention, on the basis of the above embodiment, the rotating body 15 is composed of at least one pair of blades, and the structure of the rotating body 15 is symmetrical; wherein.
The blade is made of ceramic or plastic steel.
Specifically, the rotating body 15 is composed of at least one pair of blades made of ceramic, plastic steel, etc. having a high specific gravity and being electrically non-conductive.
In a further embodiment of the invention, on the basis of the above embodiment, the bearing is located in an intermediate position of the rotating body 15;
the first thread button 11 is positioned above the middle position of the rotating body 15 and used for supporting the rotating body 15;
the second thread 16 is located below the middle of the rotating body 15 and supports the rotating body 15.
Wherein, the right middle position of the rotating body 15 is provided with a hole which is just large enough to insert the bearing.
Preferably, the length of the permanent magnets 4 and 5 is the distance from the bearing to the end of the inside of the rotating body remote from the bearing, and the width is such as to cover the closed circuit.
Preferably, two parallel arranged permanent magnets comprised by the permanent magnet 4 are arranged on one side of the bearing and two parallel arranged permanent magnets comprised by the permanent magnet 5 are arranged on the other side of the bearing.
Specifically, the bearing is located at an intermediate position of the rotating body 15; the first thread button 11 is positioned above the middle position of the rotating body 15 and is used for supporting the rotating body 15; the second turnbuckle 16 is located below the middle of the rotary body 15 to support the rotary body 15.
In another embodiment of the present invention, based on the above embodiment, the power receiving device 8 is a power storage device or a power utilization device.
Preferably, the charge storage device is a capacitor; the electricity utilization device is a bulb.
Specifically, one end of the power receiving device 8 is connected to one pole of the conductive sheet 6 through the wire 7; the other end of the power receiving device 8 is connected to the other pole of the conductive sheet 6 through a wire 7.
The embodiment provides a liquid metal magnetohydrodynamic generator, which utilizes the conductivity of liquid metal, utilizes the cutting magnetic induction lines to generate electric quantity, and then utilizes a lead to lead the electric quantity into an electric quantity receiving device, thereby achieving the effect of power generation and being used for power generation and storage in daily life.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. A liquid metal mhd generator, comprising: the device comprises a moving part, a first permanent magnet, a second permanent magnet, a conducting strip and liquid metal; wherein,
the first permanent magnet is positioned inside the moving part;
the second permanent magnet is positioned outside the moving part; wherein,
the opposite poles of the first permanent magnet and the second permanent magnet are opposite;
the liquid metal is positioned in the moving part, and the liquid metal forms a closed circuit with a conducting strip in the moving part around the first permanent magnet;
the rotating motion of the moving part cuts the closed circuit, and an induced current is generated in the closed circuit.
2. The generator of claim 1, further comprising: an electric quantity receiving device; wherein,
the electric quantity receiving device is connected with the conducting strip through a wire.
3. The generator of claim 1, wherein the second permanent magnets are two in number and are respectively arranged on both sides of the moving part;
the number of the first permanent magnets is four, two first permanent magnets are arranged on one side of the moving part, and the other two first permanent magnets are arranged on the other side of the moving part; wherein the two first permanent magnets arranged on the same side of the moving part are opposite in homopolar direction;
the liquid metal forms a closed circuit with the conducting strips in the moving part around the four first permanent magnets;
the rotating motion of the moving part cuts the closed circuit, and an induced current is generated in the closed circuit.
4. The generator of claim 1 or 2, wherein the second permanent magnet is a cuboid, a cylinder or a block with an upper plane and a lower plane;
the first permanent magnet is a cuboid;
the first permanent magnet and the second permanent magnet are both arranged in parallel to construct a parallel magnetic field.
5. The generator of claim 1, wherein the moving part comprises: the device comprises a first thread buckle, a bearing, a rotating main body and a second thread buckle; wherein,
the first threaded buckle is connected with one end of the bearing;
the second threaded buckle is connected with the other end of the bearing;
the bearing is connected with the rotating body.
6. The generator of claim 5, wherein the area of the second permanent magnet satisfies the area of a part covered by the first permanent magnet, which passes through the first permanent magnet when the first permanent magnet rotates for one circle;
the length of the first permanent magnet is the distance from the bearing to one end, far away from the bearing, in the rotating body, and the width of the first permanent magnet is the width of the closed circuit.
7. The generator of claim 5, wherein the rotating body is composed of at least one pair of blades and the structure of the rotating body is symmetrical; wherein,
the blade is made of ceramic or plastic steel.
8. The generator of claim 1, wherein the conductive strips comprise: the circular insulation layer, the circular conductor and the circular conductor; wherein,
the circular conductor is connected with the circular ring insulating layer;
the ring insulating layer is connected with the ring conductor.
9. The generator of claim 1 wherein the liquid metal is one of gallium, sodium, potassium, mercury, a potassium-sodium alloy, or a gallium-indium-tin alloy.
10. The generator of claim 1 wherein the moving member is perforated and the liquid metal is poured into the moving member through the perforations; wherein,
the cross section of the hole is in a circular shape or a random closed polygon shape.
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| CN201710507288.5A CN107359775B (en) | 2017-06-28 | 2017-06-28 | A kind of liquid-metal MHD generator |
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| CN109193288B (en) * | 2018-08-09 | 2023-10-10 | 云南科威液态金属谷研发有限公司 | Conduction system between moving parts |
| CN111769675B (en) * | 2020-06-22 | 2021-06-08 | 南京师范大学 | Motor based on liquid metal coil, manufacturing method and speed regulation method |
| CN112626778B (en) * | 2020-12-11 | 2022-05-06 | 山东科宏纺织有限公司 | Ironing and antistatic device for manufacturing knitwear |
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