Electric generator with built-in fuel

Abstract

The invention relates to the technical field of power generation, and provides a fuel built-in generator which comprises an engine and a linear motor, a reactor and a heat exchanger are arranged in the engine, the engine is arranged to form an axial temperature gradient, shielding layers are arranged on the outer side of the reactor and the outer side of the heat exchanger, and the linear motor is arranged in the reactor. A communicating channel extending in the axial direction of the engine is arranged in the engine, and a cavity is formed in a fuel area of the reactor; the linear motor comprises a piston, a cylinder body and an electromagnetic component, the communicating channel communicates with the cylinder body and the cavity, and the piston can reciprocate in the cylinder body so that the magnetic flux of the electromagnetic component can be changed. According to the generator with the built-in fuel, the reactor is arranged in the engine, and the shielding layer is arranged on the outer side of the reactor, so that the influence of radiation on the electromagnetic component is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation, in particular to a fuel-built-in generator. Background Art

[0002] A generator is a device that converts mechanical energy into electrical energy. There are many types of generators, such as thermoacoustic generators, hydroelectric generators, etc. Figure 1 As shown, taking the Stirling generator as an example, the generator includes an engine 01 and a linear motor 03. The multiple heat exchangers inside the engine make the engine have a temperature gradient. When the temperature gradient reaches a certain value, after excitation, the engine 01 can maintain spontaneous sound wave oscillation inside, converting thermal energy into mechanical energy in the form of sound waves; the sound wave further drives the piston 04 of the linear motor to move relative to the cylinder 05, changing the magnetic flux in the electromagnetic component 06, and converting mechanical energy into electrical energy output. The free piston Stirling generator has the advantages of high efficiency, reliability, and environmental protection. It can also use various forms of heat sources and has broad application prospects. The temperature gradient in the engine can be provided by the reactor, but the reactor will interfere with the electromagnetic components in the generator and affect the performance of the generator. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention proposes a fuel-built-in generator, by arranging a reactor in the engine, arranging a shielding layer outside the reactor, and isolating the reactor from the electromagnetic component through the shielding layer, so as to reduce or avoid the influence of radiation on the electromagnetic component.

[0004] A fuel-built-in generator according to an embodiment of the present invention comprises:

[0005] An engine, wherein a reactor and a heat exchanger are disposed inside the engine, the engine is configured to form an axial temperature gradient, shielding layers are disposed outside the reactor and the heat exchanger, a communication channel extending along the axial direction of the engine is disposed inside the engine, and a cavity is disposed in a fuel region of the reactor;

[0006] The linear motor comprises a piston, a cylinder and an electromagnetic component. The connecting passage connects the cylinder and the cavity. The piston can reciprocate in the cylinder to change the magnetic flux of the electromagnetic component.

[0007] According to an embodiment of the present invention, the communication channel includes a communication pipe penetrating the shielding layer, one end of the communication pipe is connected to the heat exchanger, and the other end of the communication pipe faces the piston and is connected to the space in the cylinder.

[0008] According to an embodiment of the present invention, the opening area of ​​the other end of the communication line is smaller than the end surface area of ​​the piston, so that the electromagnetic component avoids the opening of the communication line.

[0009] According to an embodiment of the present invention, the communication channel includes a communication cavity communicated with the communication pipeline, a phase modulator is arranged in the communication cavity, and the communication cavity is located in the inner circle of the reactor and the heat exchanger.

[0010] According to one embodiment of the present invention, the heat exchanger includes a regenerator and a cooler, the regenerator is located between the reflective layer of the reactor and the cooler, the reflective layer is provided with a connecting hole, the connecting hole connects the fuel area of ​​the reactor and the regenerator, and a plurality of connecting holes are provided radially away from the reactor, the cavity in the fuel area is connected to the connecting cavity, and the regenerator is connected to the connecting pipeline.

[0011] According to an embodiment of the present invention, the linear motors are symmetrically arranged with the axis of the connecting pipeline as the axis of symmetry, the connecting pipeline is arranged between the two cylinders, and the outlet of the connecting pipeline is separated from the electromagnetic component by the cylinders.

[0012] According to one embodiment of the present invention, the connecting passage includes a buffer tube, which extends along the axial direction of the engine, one end of the buffer tube is connected to the cavity, the other end of the buffer tube is connected to the first cavity in the piston, and a phase modulator is arranged at the other end of the buffer tube.

[0013] According to an embodiment of the present invention, the connecting pipeline is sleeved on the outside of the buffer tube.

[0014] According to one embodiment of the present invention, the diameter of the reactor is greater than the diameter of the heat exchanger.

[0015] According to one embodiment of the present invention, the reactor, the heat exchanger and the linear motor are symmetrically arranged on both sides of the symmetry plane of the cavity.

[0016] According to an embodiment of the present invention, the piston is gap-sealed with the buffer tube, and / or the piston is gap-sealed with the phase modulator.

[0017] According to an embodiment of the present invention, a flow guide is provided at one end of the buffer tube facing the flow channel, and the flow guide is provided with a plurality of flow guide holes.

[0018] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0019] The fuel-built-in generator of the embodiment of the present invention includes an engine and a linear motor. A reactor and a heat exchanger are arranged in the engine. A shielding layer is arranged on the outside of the reactor and the heat exchanger. The shielding layer is separated between the reactor and the linear motor to prevent the electromagnetic components of the linear motor from being affected by the radiation of the reactor. The built-in reactor inside the engine can reduce the loss of energy transmission.

[0020] Furthermore, the radial dimension of the fuel region of the reactor is larger than the radial dimension of the regenerator, which increases the volume of the fuel region, makes the reactor more easily critical, and reduces the requirement for fuel purity.

[0021] Furthermore, the linear motor is connected to the engine through a long connecting pipe and a shielding layer is arranged, which can also reduce the impact of reactor radiation on the linear motor; the fuel area is also connected to the regenerator through connecting holes opened on the reflective layer, and the connecting holes are distributed as evenly as possible between the fuel area and the regenerator so that the regenerator is heated evenly.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of a Stirling generator provided in the prior art;

[0025] Figure 2 It is a structural schematic diagram of a fuel-built-in generator provided by an embodiment of the present invention;

[0026] Figure 3 is a schematic structural diagram of a fuel-built-in generator provided by another embodiment of the present invention, Figure 3 and Figure 2 The difference is that Figure 3 It is shown that the linear motors are symmetrically arranged with the axis of the connecting channel as the symmetry axis;

[0027] Figure 4 is a schematic structural diagram of a fuel-built-in generator provided by another embodiment of the present invention, Figure 4 and Figure 2 The difference is that Figure 4 A buffer tube is arranged in the middle, and a phase modulator is arranged in the linear motor.

[0028] Reference numerals:

[0029] 01. Engine; 02. Phase modulator; 03. Linear motor; 04. Piston; 05. Cylinder; 06. Electromagnetic component;

[0030] 1. Fuel area; 2. Reflection layer; 3. Control rod; 4. Cavity; 5. Connecting hole; 6. Regenerator; 7. Cooler; 8. Phase modulator; 9. Connecting pipeline; 10. Permanent magnet; 11. Stator; 12. Piston; 13. Shielding layer; 14. Flow channel; 15. Connecting cavity; 16. Cylinder body; 17. Connecting channel; 19. Buffer tube; 20. First cavity. DETAILED DESCRIPTION

[0031] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions 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 therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "multiple", "multiple roots", and "multiple groups" mean two or more.

[0033] 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 "connection" 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 a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0034] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0036] Combination Figures 2 to 4 As shown, the fuel-built-in generator provided by an embodiment of the present invention is described. The embodiment of the present invention provides a fuel-built-in generator, including: an engine and a linear motor, a reactor and a heat exchanger are arranged inside the engine, the engine is configured to form an axial temperature gradient, a shielding layer 13 is arranged on the outside of the reactor and the heat exchanger, a connecting channel 17 extending along the axial direction of the engine is arranged inside the engine, and a cavity 4 is arranged in the fuel area 1 of the reactor; the linear motor includes a piston 12, a cylinder 16 and an electromagnetic component, the connecting channel 17 connects the cylinder 16 with the cavity 4, based on the piston 12 can reciprocate in the cylinder 16, so that the magnetic flux of the electromagnetic component changes, and the mechanical energy is converted into electrical energy.

[0037] The connecting channel 17 of the engine connects the cavity 4 in the reactor with the space in the cylinder 16, so that the power provided by the engine is transmitted to the linear motor through the connecting channel 17, satisfying the energy transmission between the engine and the linear motor. The cavity 4 is set in the fuel area 1 in the reactor, and the gas gathers or disperses in the cavity 4. Convergence can be understood as the gas entering the cavity 4, and dispersion can be understood as the gas in the cavity 4 can flow out of the reactor and flow to the piston through the connecting channel.

[0038] A temperature gradient is formed inside the engine. When the temperature gradient reaches a certain value, after being excited, the engine can maintain spontaneous sound wave oscillations, converting thermal energy into mechanical energy in the form of sound waves; the sound waves further drive the piston 12 of the linear motor to move, and the movement of the piston 12 changes the magnetic flux in the electromagnetic component, converting mechanical energy into electrical energy output.

[0039] Combined with the presence of the reactor's shielding layer 13, the electromagnetic components can avoid direct exposure to the fuel radiation in the reactor's fuel area 1, thereby solving the problem that the electromagnetic components in the linear motor are easily failed due to the high-intensity radiation of the reactor. It can also slow down or avoid the material swelling of the piston 12 and reduce the impact of the reactor on the motor.

[0040] It should be noted that the linear motor also includes an electromagnetic component, which includes a stator 11 and a moving component. The piston 12 is the moving component, or the moving component moves driven by the piston 12. That is, the magnetic flux in the electromagnetic component can be changed through the movement of the piston 12 to convert mechanical energy into electrical energy. For example, the piston 12 is fixedly connected to the permanent magnet 10, or the piston 12 is a permanent magnet.

[0041] In the fuel-built-in generator of the embodiment of the present invention, the high-temperature heat exchanger of the engine can be a reactor with a certain flow channel 14 structure. The helium in the engine flows between the fuels and can directly absorb the heat released by the fuel as the driving heat source of the Stirling engine, thereby forming a reactor power supply, eliminating the special fluid heat exchange circuit in the reactor, and the structure is simpler and more reliable. And by coating the shielding layer 13 on the outside of the reactor and the heat exchanger, the radiation propagation is blocked to solve the problem of the reactor radiation affecting the performance of the electromagnetic components. The engine has a built-in reactor, and the heat of the reactor is used as a high-temperature heat source to avoid heat loss caused by heat transfer.

[0042] In some embodiments, reference Figures 2 to 4 As shown, the communication channel 17 includes a communication pipe 9 penetrating the shielding layer 13, one end of the communication pipe 9 is connected to the heat exchanger, and the other end of the communication pipe 9 faces the piston 12 and is connected to the space in the cylinder 16. The communication pipe 9 can connect the heat exchanger with the space in the cylinder 16, and realize the communication between the cylinder 16, the communication pipe 9, the heat exchanger, the fuel area 1 in the reactor, and the cavity 4 in the reactor to form a passage.

[0043] refer to Figure 2 and Figure 3As shown, the heat exchanger is located between the connecting pipe 9 and the reactor, the second cavity of the cylinder 16 is connected to the connecting pipe 9, the connecting channel 17 includes a connecting cavity 15 connected to the connecting pipe 9, a phase modulator 8 is arranged in the connecting cavity 15, and the connecting cavity 15 is located in the inner circle of the reactor and the heat exchanger, and the cavity 4 in the reactor, the connecting cavity 15, the connecting pipe 9 and the second cavity in the cylinder 16 are connected to form another passage. Figure 2 and Figure 3 The fuel-fired generator shown has a phase shifter 8 disposed within the engine.

[0044] refer to Figure 4 As shown, Figure 2 and Figure 3 The difference is that the phase modulator 8 is arranged in the linear motor, the heat exchanger is located between the connecting pipe 9 and the reactor, and the second cavity of the cylinder 16 is connected to the connecting pipe 9, so that the second cavity, the connecting pipe 9, the heat exchanger and the cavity 4 in the reactor form a connecting path. Among them, the piston 12 is located in the second cavity of the cylinder 16, and the piston 12 can reciprocate in the second cavity. The reciprocating movement of the piston 12 can drive the gas to reciprocate along the path of the second cavity, the connecting pipe 9, the heat exchanger and the reactor to form a passage. The connecting passage 17 includes a buffer tube 19 and a connecting pipe 9 arranged in the engine. One end of the buffer tube 19 is connected to the cavity 4 in the reactor. The buffer tube 19 extends along the axial direction of the engine. The other end of the buffer tube 19 is provided with a phase modulator. A first cavity 20 is formed between the piston 12, the phase modulator 8 and the buffer tube 19. The first cavity 20 is connected to the cavity 4 in the reactor through the buffer tube 19 to form another passage. It can be understood that the passage between the second cavity and the reactor and the passage between the first cavity 20 and the reactor are separated by the piston and the buffer tube and are independent of each other, and the gases in the two passages will enter the reactor.

[0045] refer to Figures 2 to 4 As shown, the communication pipeline 9 will be described.

[0046] In some embodiments, the opening area of ​​the other end of the connecting line 9 is smaller than the end surface area of ​​the piston, so that the electromagnetic component avoids the opening of the connecting line.

[0047] The opening area of ​​the connecting pipe 9 toward the piston 12 is smaller than the end surface area of ​​the piston 12. The connecting pipe 9 has a small diameter. The radiation from the reactor cannot directly irradiate the electromagnetic components of the linear motor through the connecting pipe 9, which reduces the harmful effects on the electromagnetic components and solves the problem of performance deterioration caused by the high-intensity radiation of the reactor. The semiconductor material in the electromagnetic component is easily affected by radiation and fails. Figures 2 to 4 As shown, the electromagnetic component may include a permanent magnet and a stator located outside the permanent magnet.

[0048] The opening area of ​​the connecting pipe 9 toward the piston 12 can be understood as: Figures 2 to 4 The connecting pipe 9 has a constant diameter structure, and the opening area of ​​the connecting pipe 9 remains unchanged along the axial direction of the connecting pipe 9. Figures 2 to 4 The variable diameter space at the right end of the middle connecting pipe 9 does not belong to the connecting pipe 9. This part of the variable diameter space can be understood as the structure that adapts the piston 12 and the cylinder body; the end surface area of ​​the piston 12 can be understood as the end surface area of ​​the piston 12 facing one end of the connecting pipe 9. The piston 12 is blocked at the end of the connecting pipe 9 to block the radiation from the reactor.

[0049] Since the end surface area of ​​the piston 12 is smaller than the opening area of ​​the cylinder 16, the cylinder 16 is located outside the piston 12. The cylinder 16 can be blocked between the outlet of the connecting pipe 9 and the electromagnetic component to block the radiation from the reactor.

[0050] In some embodiments, reference Figures 2 to 4 As shown, the diameter of the reactor is larger than the diameter of the heat exchanger. The reactor and the heat exchanger are both configured as an annular structure, the annular structure surrounds the outside of the connecting channel 17, the inner diameters of the reactor and the heat exchanger are the same and are both the diameter of the connecting channel 17, and the outer diameter of the reactor is larger than the outer diameter of the heat exchanger.

[0051] By placing nuclear fuel inside the Stirling generator to replace the original high-temperature heat exchanger, the overall structure of the reactor power supply can be simplified. By setting the diameter of the reactor to be larger than the diameter of the heat exchanger inside the engine, the problem of the reactor being difficult to reach criticality can be solved when the power and size of the Stirling engine are small. The requirements for fuel concentration can also be reduced, solving the high cost problem caused by high fuel concentration.

[0052] In some cases, the fuel region 1 in the reactor is surrounded by a reflective layer 2, which is used to block radiation. The reflective layer 2 of the reactor is provided with a flow channel 14, which connects the cavity 4 in the reactor with the buffer tube 19. Combined with the above-mentioned shielding layer 13, the shielding layer 13 and the reflective layer 2 have dual functions to separate the electromagnetic components from the fuel region 1 of the reactor and block radiation.

[0053] In some embodiments, the heat exchanger includes a regenerator 6 and a cooler 7. The regenerator 6 is located between the reflective layer 2 of the reactor and the cooler 7. The reflective layer 2 is provided with a connecting hole 5. The connecting hole 5 connects the fuel region 1 of the reactor with the regenerator 6, so that the fuel region 1 of the reactor, the regenerator 6, the cooler 7 and the connecting pipeline 9 are connected. The connecting holes 5 are distributed as evenly as possible in the reflective layer 2, so that the gas flows evenly between the fuel region 1 and the regenerator 6, and the regenerator 6 is heated evenly.

[0054] In some cases, a plurality of connecting holes 5 are provided along the radial direction of the reactor to ensure that the fuel region 1 can be evenly connected with the regenerator 6 along the radial direction.

[0055] refer to Figures 2 to 4 As shown, the diameter of the fuel area 1 is larger than the diameter of the regenerator 6, and a plurality of connecting holes 5 are arranged along the radial direction of the fuel area 1. From the fuel area 1 to the regenerator 6, the connecting holes 5 are inclined downward so that the fuel area 1 is connected with the regenerator 6 as evenly as possible.

[0056] Reflection layers 2 are provided at both ends and inside and outside of the fuel region 1, wherein the inside is the side facing the connecting channel 17, and the outside is the side away from the connecting channel 17. The two ends can be understood as between the fuel region 1 and the heat exchanger. A control drum or control rod 3 is provided on the outside of the fuel region 1 to control the size of the reactor power. A reflector layer 2 is provided in the area where the control drum or control rod 3 is not provided. The fuel region 1 is arranged symmetrically, and a cavity 4 is provided in the fuel region 1. The cavity 4 is located between two symmetrical parts of the fuel. The cavity 4 is used to collect or disperse the airflow. The gas in the cavity 4 can enter and exit the connecting channel 17 through the flow channel 14 on the reflector layer 2 on the inside of the fuel region 1. The diameter of the fuel region 1 can be larger than the diameter of the regenerator 6. The increase in the size of the fuel region 1 is conducive to achieving criticality of the fuel or reducing the concentration of the fuel, and can improve the critical performance of the reactor. Uniformly distributed connecting holes 5 are provided on the reflector layer 2 between the fuel region 1 and the regenerator 6. The connecting holes 5 are used to connect the fuel region 1 and the regenerator 6 and ensure uniform distribution of the airflow.

[0057] Combination Figure 4 As shown, an embodiment in which a buffer tube is provided in an engine is described.

[0058] The engine is provided with a buffer tube 19, one end of which is connected to the flow channel 14 of the reactor, and the buffer tube 19 extends along the axial direction of the engine; the linear motor includes a piston 12, a phase modulator 8 and a cylinder body 16, the piston 12 is slidably connected to the cylinder body 16, the piston 12 is slidably and sealedly connected to the buffer tube 19, the phase modulator 8 is located at the other end of the buffer tube 19, the phase modulator 8 is slidably and sealedly connected to the piston 12, so that a first cavity 20 is formed between the piston 12, the phase modulator 8 and the buffer tube 19, and the first cavity 20 is connected to the reactor through the buffer tube 19.

[0059] After the engine has a built-in reactor, a buffer tube 19 is set inside the engine. The heat and spontaneous sound wave oscillations inside the engine are transmitted to the piston 12 and the phase modulator 8 through the buffer tube 19. At this time, the phase modulator 8 is set at the other end of the buffer tube 19 away from the reactor. The position of the phase modulator 8 is adjusted to make the phase modulator 8 away from the reactor to avoid nuclear radiation from the reactor to the phase modulator 8. This solves the problem that the phase modulator 8 is close to the reactor, causing the phase modulator 8 to withstand strong nuclear radiation, which makes it easy to swell and deform, and it is easy to get stuck after running for a period of time.

[0060] The piston 12 is sealedly connected to the wall of the buffer tube 19, and the piston 12 is sealedly connected to the wall of the phase modulator 8, so that a first cavity 20 is formed between the piston 12, the phase modulator 8 and the buffer tube 19. The first cavity 20 is connected to the inside of the reactor through the buffer tube 19, and other parts of the first cavity 20 need to ensure sealing performance. The buffer tube 19 is inside the engine and extends along the axial direction of the engine. The structure of the buffer tube 19 is simple. The reciprocating motion of the piston 12 causes the gas to reciprocate along the path of the first cavity 20, the buffer tube 19 and the reactor.

[0061] The piston 12 is slidably connected to the cylinder body 16, and the piston 12 is slidably and sealedly connected to the buffer tube 19. The phase shifter 8 is located at the other end of the buffer tube 19, and the phase shifter 8 is slidably and sealedly connected to the piston 12, so that a first cavity 20 is formed between the piston 12, the phase shifter 8, and the buffer tube 19, and the first cavity 20 is connected to the cavity 4 through the buffer tube 19.

[0062] Among them, reference Figure 4 As shown, the working principle of the fuel-built-in generator is: there is a temperature difference inside the engine, so that a temperature gradient is formed inside the engine. After excitation, the sound wave oscillation inside the engine is transmitted to the piston 12 and the phase modulator 8 through the buffer tube 19, and the piston 12 is driven to reciprocate relative to the cylinder body 16 by the sound wave. During the reciprocating motion of the piston 12, the phase modulator 8 reciprocates relative to the piston 12, so that the piston 12 and the phase modulator 8 reach a set phase difference, eliminating the difference caused by the phase change of the sound field, and ensuring the regular movement of the piston 12 to change the magnetic flux in the electromagnetic component.

[0063] The reactor energy is also transferred to the piston 12 and the phase modulator 8 through the buffer tube 19, so that the phase modulator 8 is far away from the reactor, which solves the problem that the phase modulator 8 is easily stuck due to swelling caused by reactor radiation. The structural stability of the phase modulator 8 is better, and the performance of the Stirling engine is more stable. Figure 4 As shown, along the axial direction of the buffer tube 19, the buffer tube 19, the piston 12 and the phase modulator 8 are distributed in sequence, the buffer tube 19 can be inserted into the piston 12 or sleeved on the outside of the piston 12, the phase modulator 8 can be inserted into the piston 12 or sleeved on the outside of the piston 12, the positions of the buffer tube 19 and the piston 12, the piston 12 and the phase modulator 8 are flexible and can be selected as needed. The connection parts between the buffer tube 19, the piston 12 and the phase modulator 8 need to ensure sealing performance.

[0064] The buffer tube 19 and the piston 12 can be sealed by a gap. The gap sealing can be understood as: using the small gap between the moving parts to perform a sealing effect, that is, a small gap is set between the buffer tube 19 and the piston 12, which has a simple structure and is easy to assemble.

[0065] Similarly, the piston 12 and the phase modulator 8 can also be sealed by a gap. Of course, the buffer tube 19 and the piston 12, and the piston 12 and the phase modulator 8 can also be sealed by other means, such as dynamic sealing, which does not affect the movement performance and can ensure the sealing performance of the first cavity 20.

[0066] In some embodiments, a guide member (not shown in the figure) is provided at one end of the buffer tube 19 facing the flow channel 14 of the reactor. The guide member is provided with a plurality of guide holes. The gas entering the buffer tube 19 through the flow channel 14 can be diverted through the guide holes to prevent the gas from entering the buffer tube 19 in the form of a jet.

[0067] It can be understood that the guide is arranged at the high temperature side inlet of the buffer tube 19. Of course, the guide can also be arranged inside the buffer tube 19 to ensure the uniformity of the airflow inside the tube and inhibit the occurrence of natural convection. The guide is a porous structure, and the guide can be a guide net, a guide plate, etc. The specific structural form of the guide is not limited and can be selected according to needs.

[0068] In some embodiments, the connecting pipe 9 is sleeved on the outside of the buffer tube 19, and the structure of the engine is compact.

[0069] refer to Figure 4 As shown, the connecting pipe 9 is sleeved on the outside of a partial pipe section of the buffer pipe 19, which helps to reduce the size of the engine and simplify the structure of the engine.

[0070] In some embodiments, by increasing the length of the connecting pipe 9 and the buffer tube 19, the distance between the linear motor and the engine can be increased to reduce the impact of the fuel radiation in the reactor on the linear motor, and a radiation-proof shielding layer 13 is installed on the outside of the engine to prevent the radiation of the reactor from directly irradiating the components of the linear motor. Among them, the connecting pipe 9 passes through the shielding layer 13, and the buffer tube 19 passes through the connecting pipe 9.

[0071] When the connecting pipe 9 reaches a certain length and its diameter remains small, the moving piston 12 and the phase modulator 8 are kept away from the radiation of the reactor.

[0072] Combination Figures 2 to 4 As shown, the positional relationship between the engine and the linear motor is described.

[0073] In some embodiments, heat exchangers and linear motors are provided on both sides of the reactor. It can be understood that both sides of the reactor (such as Figures 2 to 4 A set of heat exchangers and linear motors are arranged on both sides of the reactor (left and right sides), and the two sides of the reactor are symmetrically structured to offset the vibration generated by the moving parts. It can also be understood that the reactor, heat exchanger and linear motor are symmetrically arranged on both sides of the symmetry plane of the cavity 4 of the reactor.

[0074] refer to Figures 2 to 4 As shown, the structure of the reactor is bilaterally symmetrical, and combined with a symmetrical heat exchanger and linear motor, the entire machine with a built-in fuel generator is arranged bilaterally symmetrically.

[0075] In some cases, reference Figure 3 As shown, on both sides of the axis of the engine, it can be understood that the linear motors are symmetrically arranged with the axis of the connecting channel as the symmetry axis, that is, two groups of electromagnetic components are arranged at each end (left end and right end) of the engine, and the electromagnetic components are arranged up and down to minimize the radiation to the electromagnetic components. The linear motors on each side of the engine can be arranged in an opposite manner. Even if a small amount of radiation passes through the connecting pipe 9, it will not directly irradiate the moving parts such as the piston 12 of the linear motor, let alone the electromagnetic components, thereby ensuring the reliability of the Stirling engine operation.

[0076] In combination with the above, the Stirling engine provided by the embodiment of the present invention, taking the Stirling engine as an example, can improve the critical performance of the reactor and reduce the impact of the reactor on the performance of the Stirling engine. The heat exchanger of the Stirling engine includes a regenerator 6 and a cooler 7. The reactor, the regenerator 6 and the cooler 7 are distributed along the axial direction of the engine, all in an annular structure and connected in sequence, and the connecting channel 17 runs through the axis of the reactor, the regenerator 6 and the cooler 7.

[0077] A phase modulator 8 can be arranged in the communication channel 17 (refer to Figure 2 and Figure 3 As shown), the phase modulator may not be arranged in the communication channel 17, and the phase modulator 8 may be arranged in the linear motor (as shown Figure 4 As shown), the buffer tube 19 extends into the first cavity 20 formed by the piston 12 and the phase modulator 8, so that the buffer tube 19 is connected to the first cavity 20. The acoustic power flowing out of the flow channel 14 of the reactor enters the first cavity 20 of the piston 12 through the connecting channel, and transmits the power to the piston 12. The sound waves drive the piston 12 and the permanent magnet 10 to reciprocate, changing the magnetic flux in the stator 11 coil, so that the piston 12 absorbs part of the acoustic power and converts it into electrical energy output, and the other part is fed back to the engine through the connecting channel, starting a new round of heat-work conversion. When the fuel-built-in generator is provided with a buffer tube 19, one end of the buffer tube 19 is connected to a high-temperature reactor, and the buffer tube 19 should be made of insulating structural materials as much as possible to reduce the heat exchange between the internal gas through the wall and the outer components.

[0078] Furthermore, the fuel-built-in generator of the embodiment of the present invention increases the radial dimension of the fuel region 1 relative to the regenerator 6, making the reactor more easily critical; the reflecting layer 2 between the fuel region 1 and the regenerator 6 is evenly distributed with connecting holes 5, the linear motor and the engine are connected by a long connecting pipe 9, and a shielding layer 13 is arranged on the outside of the reactor and the heat exchanger to reduce the influence of radiation on the linear motor.

[0079] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A fuel-built-in generator, characterized in that: include: An engine, wherein a reactor and a heat exchanger are disposed within the engine, the engine being configured to form an axial temperature gradient, shielding layers being disposed on the exterior of the reactor and the heat exchanger, a communication passage extending axially of the engine being disposed within the engine, and a cavity being disposed within the fuel region of the reactor; The linear motor includes a piston, a cylinder and an electromagnetic component. The communication channel connects the cylinder and the cavity. The piston can reciprocate in the cylinder to change the magnetic flux of the electromagnetic component.

2. The fuel-built-in generator according to claim 1, characterized in that: The communication channel includes a communication pipe penetrating the shielding layer, one end of the communication pipe is connected to the heat exchanger, and the other end of the communication pipe faces the piston and is connected to the space in the cylinder.

3. The fuel-built-in generator according to claim 2, characterized in that: The opening area of ​​the other end of the communication line is smaller than the end surface area of ​​the piston, so that the electromagnetic component avoids the opening of the communication line.

4. The fuel-built-in generator according to claim 2, characterized in that: The communication channel includes a communication cavity communicated with the communication pipeline, a phase modulator is provided in the communication cavity, and the communication cavity is located in the inner circle of the reactor and the heat exchanger.

5. The fuel-built-in generator according to claim 4, characterized in that: The heat exchanger includes a regenerator and a cooler. The regenerator is located between the reflective layer of the reactor and the cooler. The reflective layer is provided with a connecting hole, which connects the fuel area of ​​the reactor with the regenerator. In the radial direction away from the reactor, a plurality of connecting holes are provided. The cavity in the fuel area is connected to the connecting cavity, and the regenerator is connected to the connecting pipe.

6. The fuel-built-in generator according to claim 2, characterized in that: The linear motors are symmetrically arranged with the axis of the communicating pipe as the axis of symmetry. The communicating pipe is arranged between the two cylinders, and the outlet of the communicating pipe is separated from the electromagnetic component by the cylinders.

7. The fuel-built-in generator according to claim 2, characterized in that: The communicating passage includes a buffer tube, which extends along the axial direction of the engine. One end of the buffer tube is connected to the cavity, and the other end of the buffer tube is connected to the first cavity in the piston. A phase modulator is provided at the other end of the buffer tube.

8. The fuel-built-in generator according to claim 7, characterized in that: The communicating pipeline is sleeved on the outside of the buffer tube.

9. The fuel-built-in generator according to any one of claims 1 to 8, characterized in that: The diameter of the reactor is larger than the diameter of the heat exchanger.

10. The fuel-built-in generator according to any one of claims 1 to 8, characterized in that: The reactor, the heat exchanger and the linear motor are symmetrically arranged on both sides of the symmetry plane of the cavity.

Images