Liquid metal magnetofluid free piston power generation system

Abstract

The invention relates to the technical field of power generation systems, and provides a liquid metal magnetofluid free piston power generation system which comprises a first cylinder body and a second cylinder body which are internally provided with a first elastic blocking piece and a second elastic blocking piece correspondingly. Two ends of the first liquid metal channel are respectively communicated with the first cylinder body and the second cylinder body; the first liquid metal magnetic fluid is arranged in the first liquid metal channel and located between the first elastic blocking piece and the second elastic blocking piece; the permanent magnets are arranged on the upper and lower sides of the first liquid metal channel; the first liquid metal magnetofluid can reciprocate between the first cylinder body and the second cylinder body. In the reciprocating motion process of the first liquid metal, cutting of magnetic induction lines generated by the permanent magnet is completed in the first liquid metal channel, generated current is output to the external transformer and is output to an external circuit after being adjusted by the external transformer, no mechanical moving part exists, and frictional wear is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation systems, and particularly to a liquid metal magnetohydrodynamic free piston power generation system. Background Art

[0002] A free piston engine is a power device with unique advantages. Different from traditional reciprocating piston internal combustion engines, the free piston engine eliminates the crank connecting rod mechanism, directly couples a linear generator with the free piston engine, forms a unified whole with the engine piston and the linear motor mover, and drives the generator mover to cut the magnetic induction line to generate electric energy through the linear reciprocating motion of the piston. Since mechanical components such as the crank connecting rod mechanism and the flywheel are removed, compared with the internal combustion power generation system composed of a traditional crankshaft engine and a rotary generator, the linear motor type free piston internal combustion generator has a simple structure, the energy transfer path is shortened, and the energy conversion efficiency is improved. At the same time, the side thrust between the piston and the cylinder liner is reduced, and the friction and wear between the piston and the cylinder are reduced.

[0003] A magnetohydrodynamic generator is an electromechanical conversion device that converts the mechanical energy of a fluid into electrical energy by using the interaction between a conducting fluid and a magnetic field, and a liquid metal magnetohydrodynamic generator refers to a magnetohydrodynamic generator whose working medium is liquid metal. Since there are no mechanical moving parts in the energy conversion process of this power generation technology and the energy conversion efficiency is relatively high, it has a wide range of applications in fields such as wave energy power generation and space energy conversion. According to different current extraction methods, liquid metal magnetohydrodynamic generators can be divided into two types: conduction type and induction type.

[0004] For an induction type liquid metal magnetohydrodynamic generator, the current is led out by an induction coil wound outside the working medium channel, and the magnitude of the output current and voltage can be controlled by the number of coil turns, but the structure is complex and it is only applicable to AC power generation. For a conduction type liquid metal magnetohydrodynamic generator, the current is led out by electrodes on both sides of the working medium channel, the output current is large and the voltage is small, and generally an additional transformer is required to meet the application requirements. However, the conduction type has a simple structure and can be used for both AC power generation and DC power generation.

[0005] In the existing free piston power generation system, due to the adoption of a traditional piston connecting rod mechanism, there are mechanical moving parts, the reliability is low, and there is still friction loss between the piston and the cylinder. Summary of the Invention

[0006] The present invention provides a liquid metal magnetohydrodynamic free piston power generation system to solve the defects that the traditional linear motor type free piston internal combustion generator in the prior art has mechanical moving parts and serious friction and wear, and realizes a free piston power generation system using liquid metal magnetohydrodynamic as the liquid piston, achieving no mechanical moving parts, adjustable working efficiency, and high reliability.

[0007] The present invention provides a liquid metal magnetohydrodynamic free piston power generation system, comprising:

[0008] A first cylinder block and a second cylinder block, which are respectively provided with a first elastic stopper and a second elastic stopper inside;

[0009] A first liquid metal channel, the two ends of which are respectively communicated with the first cylinder block and the second cylinder block;

[0010] A first liquid metal magnetohydrodynamic, which is arranged inside the first liquid metal channel and located between the first elastic stopper and the second elastic stopper;

[0011] A permanent magnet, which is arranged along the extending direction of the first liquid metal channel and located on the opposite sides of the first liquid metal channel;

[0012] The first liquid metal magnetohydrodynamic can reciprocate between the first cylinder block and the second cylinder block.

[0013] According to the liquid metal magnetohydrodynamic free piston power generation system provided by the present invention, a first intake valve and a first exhaust valve are communicated with one end of the first cylinder block far away from the first liquid metal magnetohydrodynamic;

[0014] A second intake valve and a second exhaust valve are communicated with one end of the second cylinder block far away from the first liquid metal magnetohydrodynamic;

[0015] It further comprises: a fuel pipeline, an intake pipeline and an exhaust pipeline, the fuel pipeline and the intake pipeline are both communicated with the first intake valve and the second intake valve; the exhaust pipeline is both communicated with the first exhaust valve and the second exhaust valve;

[0016] A first ignition device and a second ignition device, which are respectively arranged at one ends of the first cylinder block and the second cylinder block far away from the first liquid metal magnetohydrodynamic.

[0017] According to the liquid metal magnetohydrodynamic free piston power generation system provided by the present invention, the first cylinder block and the second cylinder block are arranged horizontally opposite to each other.

[0018] According to the liquid metal magnetohydrodynamic free piston power generation system provided by the present invention, the first cylinder block and the second cylinder block are arranged in a U-shaped structure.

[0019] According to the liquid metal magnetohydrodynamic free piston power generation system provided by the present invention, it further comprises:

[0020] The third cylinder block and the fourth cylinder block are respectively provided with a third elastic stopper and a fourth elastic stopper inside; the third cylinder block is arranged parallel to the first cylinder block, and the fourth cylinder block is arranged parallel to the second cylinder block; the first cylinder block and the fourth cylinder block burn and do work simultaneously, and the second cylinder block and the third cylinder block burn and do work simultaneously;

[0021] A second liquid metal channel has two ends respectively communicating with the third cylinder block and the fourth cylinder block; and permanent magnets are arranged on two opposite sides along the extending direction of the second liquid metal channel;

[0022] A second liquid metal magnetohydrodynamic is arranged inside the second liquid metal channel and is located between the third elastic stopper and the fourth elastic stopper; the second liquid metal magnetohydrodynamic can reciprocate between the third cylinder block and the fourth cylinder block.

[0023] According to a liquid metal magnetohydrodynamic free piston power generation system provided by the present invention, a third intake valve and a third exhaust valve are communicated with one end of the third cylinder block far away from the second liquid metal magnetohydrodynamic;

[0024] A fourth intake valve and a fourth exhaust valve are communicated with one end of the fourth cylinder block far away from the second liquid metal magnetohydrodynamic;

[0025] And both the third intake valve and the fourth intake valve are communicated with the fuel pipeline and the intake pipeline; both the third exhaust valve and the fourth exhaust valve are communicated with the exhaust pipeline;

[0026] A third ignition device and a fourth ignition device are respectively arranged at one end of the third cylinder block and the fourth cylinder block far away from the second liquid metal magnetohydrodynamic.

[0027] According to a liquid metal magnetohydrodynamic free piston power generation system provided by the present invention, both the first ignition device and the second ignition device include spark plugs.

[0028] According to a liquid metal magnetohydrodynamic free piston power generation system provided by the present invention, the fuel inside the fuel pipeline includes one of gasoline, methanol, propane or hydrogen.

[0029] According to a liquid metal magnetohydrodynamic free piston power generation system provided by the present invention, both the first elastic stopper and the second elastic stopper include elastic membranes.

[0030] According to a liquid metal magnetohydrodynamic free piston power generation system provided by the present invention, both the first liquid metal magnetohydrodynamic and the second liquid metal magnetohydrodynamic include one of liquid sodium, liquid sodium-potassium alloy, mercury, and gallium-indium-tin alloy.

[0031] The liquid metal magnetohydrodynamic free piston power generation system provided by the present invention includes a first cylinder and a second cylinder, which are respectively provided with a first elastic stopper and a second elastic stopper inside. A first liquid metal channel has two ends respectively communicating with the first cylinder and the second cylinder. A first liquid metal magnetohydrodynamic is disposed inside the first liquid metal channel and is located between the first elastic stopper and the second elastic stopper. A permanent magnet is sleeved on the outer periphery of the first liquid metal channel. The first liquid metal magnetohydrodynamic can reciprocate between the first cylinder and the second cylinder. During the reciprocating movement of the first liquid metal, the magnetic induction lines generated by the permanent magnet are cut in the first liquid metal channel, and the generated current is output to an external transformer and then output to an external circuit after being adjusted by the external transformer.

[0032] A liquid piston is formed by using a liquid metal magnetohydrodynamic, realizing a thermoelectric conversion system without mechanical moving parts. Compared with traditional free piston internal combustion generators, the present invention can reduce frictional losses and improve system stability. And compared with the liquid metal magnetohydrodynamic generator system driven by thermoacoustics, which has problems of difficult matching, the present invention can achieve good frequency matching by controlling the opening and closing times of the intake and exhaust valves, enabling the liquid metal magnetohydrodynamic generator to operate at the best power generation performance.

[0033] In view of the problems of traditional linear motor type free piston internal combustion generators having mechanical moving parts, serious frictional wear and low efficiency, and the difficulty of acoustic-electric matching of thermoacoustically driven liquid metal magnetohydrodynamic generators, the present invention proposes a free piston power generation system using a liquid metal magnetohydrodynamic as a liquid piston, realizing a power generation technology without mechanical moving parts, adjustable working frequency and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 It is a schematic structural diagram of an embodiment provided by the present invention;

[0036] Figure 2 It is a schematic structural diagram of another embodiment provided by the present invention;

[0037] Figure 3 It is a schematic structural diagram of still another embodiment provided by the present invention;

[0038] Reference numerals:

[0039] 1. First cylinder block; 2. Second cylinder block; 3. Intake pipeline; 4. Fuel pipeline; 5. Exhaust pipeline; 6. Permanent magnet; 7. First liquid metal magnetohydrodynamic; 8. First liquid metal channel; 9. Third cylinder block; 10. Fourth cylinder block; 15. Second liquid metal channel; 16. Second liquid metal magnetohydrodynamic;

[0040] 11. First intake valve; 12. First ignition device; 13. First exhaust valve; 14. First elastic stop;

[0041] 21. Second intake valve; 22. Second ignition device; 23. Second exhaust valve; 24. Second elastic stop;

[0042] 91. Third intake valve; 92. Second ignition device; 93. Third exhaust valve; 94. Third elastic stop;

[0043] 101. Fourth intake valve; 102. Fourth ignition device; 103. Fourth exhaust valve; 104. Fourth elastic stop. Detailed implementation manners

[0044] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without making creative efforts based on the embodiments in the present invention belong to the scope of protection of the present invention.

[0045] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0046] The following combines Figure 1 Describe the structural schematic diagram of the first embodiment of the present invention. This embodiment includes two opposed cylinders and a liquid metal magnetohydrodynamic power generation system. The cylinders are connected to the liquid metal magnetohydrodynamic generator, and the connection part separates the cylinders from the liquid metal pistons through elastic stops to ensure the stability of the liquid level.

[0047] One side of the engine includes a first cylinder block 1, a first intake valve 11, a first ignition device 12, a first exhaust valve 13, an intake pipeline 3, a fuel pipeline 4, and an exhaust pipeline 5. The first intake valve 11 is connected to the intake pipeline 3 and the fuel pipeline 4. The first exhaust valve 13 is connected to the exhaust pipeline 5.

[0048] The fuel in the fuel pipeline 4 can be selected from one of gasoline, methanol, propane, hydrogen, or other liquid or gaseous fuels.

[0049] The liquid metal magnetohydrodynamic generator consists of a permanent magnet 6, a first liquid metal magnetohydrodynamic fluid 7, a first liquid metal channel 8, a first elastic stopper 14, and a second elastic stopper 24. The first liquid metal channel 8 and the first elastic stopper 14 and the second elastic stopper 24 form a closed space, and the first liquid metal magnetohydrodynamic fluid 7 fills this space.

[0050] The permanent magnet 6 is placed on the upper and lower sides of the first liquid metal channel 8 to form a relatively uniform vertically distributed magnetic field within the first liquid metal channel 8.

[0051] The first liquid metal magnetohydrodynamic fluid 7 is liquid sodium or liquid sodium-potassium alloy or mercury or gallium-indium-tin alloy.

[0052] On the left and right sides of the first liquid metal channel 8, there are electrode plates and terminal blocks to output the current generated by the liquid metal magnetohydrodynamic generator to an external transformer, which is then regulated by the external transformer and output to an external circuit.

[0053] Among them, both the first elastic stopper 14 and the second elastic stopper 24 are made of elastic membranes.

[0054] The following specifically describes the working process of a liquid metal magnetohydrodynamic free piston power generation system provided by this embodiment:

[0055] Air in the intake pipeline 3 and fuel in the fuel pipeline 4 enter the first cylinder block 1 through the first intake valve 11, and are ignited under the action of the first ignition device 12. The gas expands, compressing the first elastic stopper 14 to deform towards the right side. The thrust generated by the first elastic stopper 14 pushes the first liquid metal magnetohydrodynamic 7 to flow towards the right side. The first liquid metal magnetohydrodynamic 7 transmits the force to the second elastic stopper 24, and the second elastic stopper 24 deforms towards the right side under the force. At this time, the second exhaust valve 23 in the second cylinder block 2 opens, and the exhaust gas after combustion in the second cylinder block 2 is discharged from the second cylinder block 2. When the exhaust gas is discharged, the second exhaust valve 23 closes, and the second intake valve 21 of the second cylinder block 2 opens. Air in the intake pipeline 3 and fuel in the fuel pipeline 4 enter the second cylinder block 2 through the second intake valve 21, and are ignited under the action of the second ignition device 22. The gas in the second cylinder block 2 expands and compresses the second elastic stopper 24 to deform towards the left side. The thrust generated by the second elastic stopper 24 pushes the first liquid metal magnetohydrodynamic 7 to flow towards the left side. The first liquid metal magnetohydrodynamic 7 transmits the force to the first elastic stopper 14, and the first elastic stopper 14 deforms towards the left side under the force. At this time, the first exhaust valve 13 in the first cylinder block 1 opens, and the exhaust gas after combustion in the first cylinder block 1 is discharged from the first cylinder block 1. Thus, a complete working process is completed. In this process, the first cylinder block 1 and the second cylinder block 2 alternately complete the combustion and work process, and the first liquid metal magnetohydrodynamic 7 reciprocates once. During the reciprocating movement of the first liquid metal magnetohydrodynamic 7, the magnetic induction lines generated by the permanent magnet 6 are cut in the first liquid metal channel 8, and the generated current is output to the external transformer, and is output to the external circuit after being adjusted by the external transformer.

[0056] There are no mechanical moving parts in the working part of this device, and the friction and wear are relatively small. In addition, this device can control the movement frequency of the liquid metal magnetohydrodynamic by controlling the opening and closing time of the air valve, and thus can regulate the output frequency of the generator. Through the continuous alternating combustion in the first cylinder block 1 and the second cylinder block 2, the continuous and stable conversion of thermal energy into electrical energy is realized.

[0057] The following combines Figure 2 to describe the structural schematic diagram of the second embodiment of the present invention.

[0058] This embodiment provides a liquid metal magnetohydrodynamic free piston power generation system with a U-shaped body, which is beneficial to stabilizing the liquid metal liquid level and better completing the exhaust process.

[0059] This embodiment includes two cylinders arranged at both ends of a U-shaped body and a liquid metal magnetohydrodynamic generator. The cylinders are connected to the liquid metal magnetohydrodynamic generator. The first cylinder body 1 is separated from the piston liquid surface of the first liquid metal magnetohydrodynamic 7 by the first elastic stopper 14 to ensure the stability of the liquid surface, and the second cylinder body 2 is separated from the piston liquid surface of the first liquid metal magnetohydrodynamic 7 by the second elastic stopper 24. Specifically, in this example, the engine on one side includes a first cylinder body 1, a first intake valve 11, a first ignition device 12, a first exhaust valve 13, an intake pipe 3, a fuel pipe 4, and an exhaust pipe 5. The first intake valve 11 is connected to the intake pipe 3 and the fuel pipe 4. The first exhaust valve 13 is connected to the exhaust pipe 5.

[0060] The liquid metal magnetohydrodynamic generator consists of a permanent magnet 6, a first liquid metal magnetohydrodynamic 7, a first liquid metal channel 8, a first elastic stopper 14, and a second elastic stopper 24. The first liquid metal channel 8 and the first elastic stopper 14 and the second elastic stopper 24 form a closed space, and the first liquid metal magnetohydrodynamic 7 fills this space. There are electrode plates and connection terminals on the left and right sides of the first liquid metal channel 8 to output the current generated by the liquid metal magnetohydrodynamic generator to an external transformer, which is adjusted by the external transformer and then output to an external circuit.

[0061] During operation, air in the intake pipeline 3 and fuel in the fuel pipeline 4 enter the first cylinder block 1 through the first intake valve 11, are ignited under the action of the first ignition device 12, the gas expands, pushing the first elastic stopper 14 downward. The thrust generated by the first elastic stopper 14 pushes the first liquid metal magnetohydrodynamic fluid 7 to flow, and the liquid level in the first cylinder block 1 drops. The first liquid metal magnetohydrodynamic fluid 7 transmits the force to the second elastic stopper 24, and the second elastic stopper 24 moves upward, causing the liquid level in the second cylinder block 2 to rise. At this time, the second exhaust valve 23 in the second cylinder block 2 opens, and the exhausted gas after combustion in the second cylinder block 2 is discharged from the second cylinder block 2. When the exhausted gas is discharged, the second exhaust valve 23 closes, and the second intake valve 21 of the second cylinder block 2 opens. Air in the intake pipeline 3 and fuel in the fuel pipeline 4 enter the second cylinder block 2 through the second intake valve 21, are ignited under the action of the second ignition device 22, and the gas in the second cylinder block 2 expands to push the second elastic stopper 24 downward. The thrust generated by the second elastic stopper 24 pushes the first liquid metal magnetohydrodynamic fluid 7 to flow. The first liquid metal magnetohydrodynamic fluid 7 transmits the force to the first elastic stopper 14, and the first elastic stopper 14 moves upward under the force, causing the liquid level in the first cylinder block 1 to rise. At this time, the first exhaust valve 13 in the first cylinder block 1 opens, and the exhausted gas after combustion in the first cylinder block 1 is discharged. Thus, a complete working process is completed. In this process, the first cylinder block 1 and the second cylinder block 2 alternately complete the combustion and work process, and the first liquid metal magnetohydrodynamic fluid 7 reciprocates once. During the reciprocating movement of the first liquid metal magnetohydrodynamic fluid 7, the magnetic induction lines generated by the permanent magnet 6 are cut in the first liquid metal channel 8, and the generated current is output to an external transformer, which is adjusted by the external transformer and then output to an external circuit. In this embodiment, both the first elastic stopper 14 and the second elastic stopper 24 adopt floats. Due to the adoption of floats, the liquid level of the first liquid metal magnetohydrodynamic fluid 7 is more stable, and the reliability of the system is improved.

[0062] As Figure 3 shown, the present invention provides a liquid metal magnetohydrodynamic power generation system driven by a free piston internal combustion engine. This example provides a four-cylinder opposed liquid metal magnetohydrodynamic free piston power generation system. By alternately burning and working (the first cylinder block 1 and the fourth cylinder block 10 burn and work simultaneously, and the second cylinder block 2 and the third cylinder block 9 burn and work simultaneously), the reciprocating flow directions of the first liquid metal magnetohydrodynamic fluid 7 and the second liquid metal magnetohydrodynamic fluid 16 in the first liquid metal channel 8 and the second liquid metal channel 15 are opposite, and the generated current directions are opposite, which is beneficial to canceling the induced magnetic field excited by the current and suppressing the inductance inside the liquid metal magnetohydrodynamic generator, thereby improving the power generation efficiency of the liquid metal magnetohydrodynamic generator. At the same time, this way of alternately working is beneficial to reducing the vibration of the system and ensuring the stable operation of the system.

[0063] The working process of this embodiment will be specifically described as follows: Air in the intake pipeline 3 and fuel in the fuel pipeline 4 enter the first cylinder block 1 through the first intake valve 11 and are ignited under the action of the first ignition device 12. At the same time, the same combustion process occurs in the fourth cylinder block 10. The gases in the first cylinder block 1 and the fourth cylinder block 10 expand, pushing the first elastic stopper 14 to deform towards the right and the fourth elastic stopper 104 to deform towards the left. The first elastic stopper 14 and the fourth elastic stopper 104 are made of elastic membranes, and the deformation of the elastic membranes causes the first liquid metal magnetohydrodynamic fluid 7 to move towards the right and the second liquid metal magnetohydrodynamic fluid 16 to move towards the left. At the same time, the second elastic stopper 24 deforms towards the right and the third elastic stopper 94 moves towards the left, and the second cylinder block 2 and the third cylinder block 9 complete the exhaust process. Then, similarly, the second cylinder block 2 and the third cylinder block 9 perform the combustion process, and the first cylinder block 1 and the fourth cylinder block 10 complete the exhaust process. The first liquid metal magnetohydrodynamic fluid 7 moves towards the left and the second liquid metal magnetohydrodynamic fluid 16 moves towards the right. Thus, the first liquid metal magnetohydrodynamic fluid 7 and the second liquid metal magnetohydrodynamic fluid 16 complete reciprocating motions in opposite directions, and a complete working process is completed. Since the reciprocating motions of the first liquid metal magnetohydrodynamic fluid 7 and the second liquid metal magnetohydrodynamic fluid 16 are in opposite directions, induced currents in opposite directions are generated and input into the external circuit. Since the current directions are opposite, the induced magnetic fields excited cancel each other out, which can effectively suppress the inductance inside the liquid metal magnetohydrodynamic generator, is conducive to reducing the phase difference between the load voltage and the load current of the generator, and improving the power generation efficiency. At the same time, since there are expansion work processes on both the left and right sides of the entire body simultaneously, the generated thrusts inhibit each other, reducing the vibration of the system and being conducive to the stable operation of the system.

[0064] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0065] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "way", "specific way", or "some ways", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or way are included in at least one embodiment or way of the embodiments of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or way. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable way in any one or more embodiments or ways. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or ways described in this specification and the features of different embodiments or ways.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A liquid metal magnetohydrodynamic free piston power generation system, characterized in that, Comprising: A first cylinder block (1) and a second cylinder block (2), which are respectively provided with a first elastic stop (14) and a second elastic stop (24) inside; A first liquid metal channel (8), the two ends of which are respectively communicated with the first cylinder block (1) and the second cylinder block (2); A first liquid metal magnetohydrodynamic fluid (7), which is arranged inside the first liquid metal channel (8) and is located between the first elastic stop (14) and the second elastic stop (24); A permanent magnet (6), which is arranged along the extending direction of the first liquid metal channel (8) and is located on the opposite sides of the first liquid metal channel (8); The first liquid metal magnetohydrodynamic fluid (7) can reciprocate between the first cylinder block (1) and the second cylinder block (2).

2. The liquid metal magnetohydrodynamic free piston power generation system according to claim 1, wherein One end of the first cylinder block (1) away from the first liquid metal magnetohydrodynamic fluid (7) is communicated with a first intake valve (11) and a first exhaust valve (13); One end of the second cylinder block (2) away from the first liquid metal magnetohydrodynamic fluid (7) is communicated with a second intake valve (21) and a second exhaust valve (23); Further comprising: a fuel pipeline (4), an intake pipeline (3) and an exhaust pipeline (5), the fuel pipeline (4) and the intake pipeline (3) are both communicated with the first intake valve (11) and the second intake valve (21); the exhaust pipeline (5) is both communicated with the first exhaust valve (13) and the second exhaust valve (23); A first ignition device (12) and a second ignition device (22), which are respectively arranged at one end of the first cylinder block (1) and the second cylinder block (2) away from the first liquid metal magnetohydrodynamic fluid (7).

3. The liquid metal magnetic fluid free piston power generation system according to claim 1, characterized in that: The first cylinder block (1) and the second cylinder block (2) are arranged horizontally opposite to each other.

4. The liquid metal magnetic fluid free piston power generation system according to claim 1, characterized in that: The first cylinder block (1) and the second cylinder block (2) are arranged in a U-shaped structure.

5. The liquid metal magnetohydrodynamic free piston power generation system according to claim 1, characterized in that, Further comprising: A third cylinder block (9) and a fourth cylinder block (10), which are respectively provided with a third elastic stop (94) and a fourth elastic stop (104) inside; the third cylinder block (9) is arranged parallel to the first cylinder block (1), and the fourth cylinder block (10) is arranged parallel to the second cylinder block (2); the first cylinder block (1) and the fourth cylinder block (10) burn and do work simultaneously, and the second cylinder block (2) and the third cylinder block (9) burn and do work simultaneously; A second liquid metal channel (15), the two ends of which are respectively communicated with the third cylinder block (9) and the fourth cylinder block (10); and the permanent magnet (6) is arranged on the opposite sides along the extending direction of the second liquid metal channel (15); A second liquid metal magnetohydrodynamic fluid (16), which is arranged inside the second liquid metal channel (15) and is located between the third elastic stop (94) and the fourth elastic stop (104); the second liquid metal magnetohydrodynamic fluid (16) can reciprocate between the third cylinder block (9) and the fourth cylinder block (10).

6. The liquid metal magnetohydrodynamic free piston power generation system according to claim 5, characterized in that, One end of the third cylinder block (9) away from the second liquid metal magnetofluid (16) is communicated with a third intake valve (91) and a third exhaust valve (93); One end of the fourth cylinder block (10) away from the second liquid metal magnetofluid (16) is communicated with a fourth intake valve (101) and a fourth exhaust valve (103); Both the third intake valve (91) and the fourth intake valve (101) are communicated with the fuel pipeline (4) and the intake pipeline (3); both the third exhaust valve (93) and the fourth exhaust valve (103) are communicated with the exhaust pipeline (5); A third ignition device (92) and a fourth ignition device (102) are respectively arranged at one ends of the third cylinder block (9) and the fourth cylinder block (10) away from the second liquid metal magnetofluid (16).

7. The liquid metal magnetohydrodynamic free piston power generation system according to claim 2, characterized in that Both the first ignition device (12) and the second ignition device (22) include spark plugs.

8. The liquid metal magnetohydrodynamic free piston power generation system according to claim 2, characterized in that, The fuel inside the fuel pipeline (4) includes one of gasoline, methanol, propane or hydrogen.

9. The liquid metal magnetic fluid free piston power generation system according to claim 3, characterized in that: Both the first elastic stopper (14) and the second elastic stopper (24) include elastic membranes.

10. The liquid metal magnetohydrodynamic free piston power generation system according to claim 5, characterized in that, Both the first liquid metal magnetofluid (7) and the second liquid metal magnetofluid (16) include one of liquid sodium, liquid sodium-potassium alloy, mercury, and gallium-indium-tin alloy.

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