Distributed stirling power generation system
By using heat-conducting components to connect multiple Stirling engines and heat pipes in the Stirling power generation system, and utilizing a honeycomb structure and staggered arrangement, the problem of low heat exchange efficiency between heat pipes and Stirling engines in the Stirling power generation system was solved, achieving efficient thermoelectric conversion and improved system stability.
Patent Information
- Application Number
- CN202210302031.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-03-24
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2042-03-24
AI Technical Summary
In existing Stirling power generation systems that use high-temperature heat pipe stacks as heat sources, there is a problem of poor heat transfer between the heat pipes and the high-temperature heat exchanger of the Stirling engine, resulting in low thermoelectric conversion efficiency.
A distributed Stirling power generation system is adopted, which connects multiple Stirling engines and heat pipes through heat-conducting components. The distributed multiple Stirling engines are coupled with linear generators to increase the heat exchange area and reduce heat exchange losses. The heat pipes and Stirling engines are arranged in a honeycomb structure and staggered to improve the thermoelectric conversion efficiency.
It improves the redundancy and thermoelectric conversion efficiency of the power generation system, reduces the processing and manufacturing difficulty of the Stirling engine, improves the precision and operational reliability of mechanical moving parts, and enhances the stability and heat distribution uniformity of the system.
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Figure CN116838496B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of power generation system technology, and more particularly to a distributed Stirling power generation system. Background Technology
[0002] The Stirling engine is an external combustion engine that converts thermal energy into mechanical energy through the cooling contraction and heat absorption expansion of the working medium within the cylinder under the influence of an external heat source. Using the mechanical energy output from the Stirling engine to drive a linear generator for power generation is a highly reliable and long-lasting power generation method. This method can efficiently utilize nuclear energy, solar energy, and industrial waste heat, and because there is no deflagration, vibration and working fluid leakage problems are also reduced. Among existing technologies, Stirling power generation systems using high-temperature heat pipe stacks as heat sources can cover a wide power range and have high power density, but they still suffer from poor heat transfer between the heat pipes and the high-temperature heat exchanger of the Stirling engine, leading to low thermoelectric conversion efficiency. Summary of the Invention
[0003] This invention provides a distributed Stirling power generation system to solve the problem of low thermoelectric conversion efficiency caused by poor heat transfer between the heat pipes and the high-temperature heat exchanger of the Stirling engine in existing Stirling power generation systems that use high-temperature heat pipe stacks as heat sources.
[0004] This invention provides a distributed Stirling power generation system, comprising: a heat pipe stack, a heat-conducting component, a generator, and multiple Stirling engines;
[0005] The heat pipe stack is provided with multiple heat pipes, and the multiple heat pipes and the multiple high-temperature end heat exchangers of the Stirling engine are respectively connected to the heat-conducting element, so that the heat of the heat pipes can be conducted to the high-temperature end heat exchangers through the heat-conducting element; the generator is provided with a compression chamber, and the gas chamber of each Stirling engine is connected to the compression chamber of the generator.
[0006] According to a distributed Stirling power generation system provided by the present invention, the heat-conducting element and the Stirling engine are located on the side of the heat pipe stack near the heat pipe, and the gas chamber of the Stirling engine is connected to the compression chamber of the generator through a gas supply pipe.
[0007] According to a distributed Stirling power generation system provided by the present invention, a plurality of heat pipes and a plurality of Stirling engines are arranged alternately on the heat-conducting element.
[0008] According to a distributed Stirling power generation system provided by the present invention, a plurality of heat pipes are arranged in a honeycomb structure, and a Stirling engine is provided between every three adjacent heat pipes arranged in a triangular pattern connected to the heat-conducting element.
[0009] According to a distributed Stirling power generation system provided by the present invention, the heat-conducting component is provided with a plurality of mounting holes, and a plurality of high-temperature end heat exchangers of the Stirling engine are installed one-to-one in the plurality of mounting holes.
[0010] According to a distributed Stirling power generation system provided by the present invention, the heat-conducting component has a first side and a second side facing away from each other, the mounting hole is a first countersunk hole provided on the first side, and the second side is provided with a plurality of second countersunk holes, and the plurality of mounting holes and the plurality of second countersunk holes are provided in a one-to-one correspondence.
[0011] According to the present invention, a distributed Stirling power generation system is provided, wherein the generator is a linear generator or a liquid metal magnetohydrodynamic generator.
[0012] According to the present invention, a distributed Stirling power generation system is provided, wherein the number of generators is two, and the two generators are coaxially opposite each other.
[0013] According to a distributed Stirling power generation system provided by the present invention, the compression chambers of two liquid metal magnetohydrodynamic generators that are close to each other or the compression chambers of two liquid metal magnetohydrodynamic generators that are far apart from each other are connected to the gas chambers of multiple Stirling engines.
[0014] Alternatively, the compression chambers of the two liquid metal magnetohydrodynamic generators that are close to each other are connected to the gas chamber of one part of the Stirling engine, and the compression chambers of the two liquid metal magnetohydrodynamic generators that are far apart from each other are connected to the gas chamber of the other part of the Stirling engine, with the two parts of the Stirling engine arranged alternately on the heat-conducting element.
[0015] According to a distributed Stirling power generation system provided by the present invention, a vibration damper is installed at the gas chamber end of the Stirling engine.
[0016] The distributed Stirling power generation system provided by this invention utilizes a heat-conducting component to connect the heat pipes of a heat pipe stack to multiple Stirling engines. This system employs a distributed configuration of multiple Stirling engines coupled to a linear generator for power generation. The failure of one Stirling engine will not severely impact the system, thus improving redundancy. The connection of multiple Stirling engines to the heat-conducting component increases the heat exchange area, reduces heat loss, and improves the thermoelectric conversion efficiency of the power generation system. Furthermore, the relatively small size of each Stirling engine not only allows for more uniform heat distribution within the engine, improving thermoelectric heat exchange efficiency, but also significantly reduces the manufacturing difficulty of the Stirling engine, enhancing the precision and reliability of its moving mechanical components. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0018] Figure 1 This is a partial structural diagram of the distributed Stirling power generation system provided by the present invention;
[0019] Figure 2 This is one of the schematic diagrams of the splicing of heat-conducting blocks in the distributed Stirling power generation system provided by the present invention;
[0020] Figure 3 This is the second schematic diagram of the splicing of heat-conducting blocks in the distributed Stirling power generation system provided by the present invention;
[0021] Figure 4 This is a partial structural cross-sectional view of the Stirling power generation system provided by the present invention;
[0022] Figure 5 This is one of the schematic diagrams showing the connection between the Stirling engine and the free piston linear motor in the Stirling power generation system provided by the present invention;
[0023] Figure 6 This is the second schematic diagram of the connection between the Stirling engine and the free piston linear motor in the Stirling power generation system provided by the present invention;
[0024] Figure 7 This is one of the schematic diagrams showing the connection between the Stirling engine and the liquid metal magnetohydrodynamic generator in the Stirling power generation system provided by the present invention;
[0025] Figure 8 This is the second schematic diagram showing the connection between the Stirling engine and the liquid metal magnetohydrodynamic generator in the Stirling power generation system provided by the present invention;
[0026] Figure label:
[0027] 11. Heat pipe; 12. Core; 121. First insertion hole; 122. Second insertion hole; 2. Heat-conducting component; 21. Heat-conducting block; 211. Mounting hole; 212. Through hole; 213. Second countersunk hole; 30. Compression chamber; 31. Linear generator; 311. Outer casing; 312. Free piston; 313. Inner stator; 314. Outer stator; 315. Leaf spring; 32. Liquid metal magnetohydrodynamic generator; 4. Stirling engine; 40. Gas chamber; 41. Casing; 42. Exhaust device; 43. Room temperature end heat exchanger; 44. Regenerator; 45. High temperature end heat exchanger; 46. Leaf spring; 5. Vibration damper. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.
[0029] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "first" and "second" are designations used to clearly describe product components and do not represent any substantial difference. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.
[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0031] The following is combined Figures 1-8 The distributed Stirling power generation system of the present invention is described.
[0032] like Figure 1 As shown, the distributed Stirling power generation system provided by this invention includes a heat pipe stack, a heat-conducting component 2, a generator, and multiple Stirling engines 4. The heat pipe stack has multiple heat pipes 11, and the heat pipes 11 and the high-temperature end heat exchangers 45 of the multiple Stirling engines 4 are respectively connected to the heat-conducting component 2, allowing the heat from the heat pipes 11 to be conducted to the high-temperature end heat exchangers 45 through the heat-conducting component 2. The generator has a compression chamber 30, and the gas chamber of each Stirling engine 4 is connected to the compression chamber 30 of the generator. To clearly illustrate the structure of this distributed Stirling power generation system, Figure 1 Only a portion of the structure of the heat-conducting component 2 is shown schematically.
[0033] Among them, such as Figure 4 As shown, the Stirling engine 4 includes a housing 41, an exhaust manifold 42, and a room temperature heat exchanger 43, a regenerator 44, and a high temperature heat exchanger 45 connected sequentially along the axial direction of the exhaust manifold 42. A leaf spring 46 is fixed inside the housing 41, and the exhaust manifold 42 is fixedly connected to the leaf spring 46. The room temperature heat exchanger 43, the regenerator 44, and the high temperature heat exchanger 45 are arranged around the outer periphery of the exhaust manifold 42, and are connected sequentially along the axial direction of the exhaust manifold 42 to form the gas chamber 40 of the Stirling engine.
[0034] The heat pipe stack also includes a core 12, with one end of each heat pipe 11 connected to the core 12 and the other end connected to a heat conductor 2. The heat conductor 2 can be a metal block with high thermal conductivity, such as copper. The core 12 can be a high-temperature gas-cooled reactor. When this distributed Stirling power generation system is operating, the heat generated in the evaporation section of the high-temperature gas-cooled reactor is conducted through the heat pipes 11 to the heat conductor 2, and then conducted by the heat conductor 2 to the high-temperature end heat exchangers 45 of the multiple Stirling engines 4. This creates an axial temperature gradient between the high-temperature end heat exchanger 45 and the room-temperature end heat exchanger 43 in the regenerator 44, thereby generating mechanical energy in the form of pressure waves. The mechanical energy generated by the multiple Stirling engines 4 is simultaneously transferred to the generator to convert the mechanical energy in the form of pressure waves into electrical energy.
[0035] Before the axial temperature gradient of the regenerator 44 reaches the critical temperature gradient, the generator is powered on to excite it to oscillate back and forth. Since the generator's chamber is connected to the Stirling engine 4's chamber, the exhaust device 42 receives an initial force and begins to reciprocate under the action of the leaf spring 46. When the axial temperature gradient of the regenerator 44 reaches the critical temperature gradient, the excitation can be turned off, and the mechanical energy generated by the periodic expansion and contraction of the gaseous working fluid in the Stirling engine 4's chamber continues to drive the generator to generate electricity.
[0036] The distributed Stirling power generation system provided by this invention, by setting up a heat-conducting component 2, connects the heat pipes 11 of the heat pipe stack and multiple Stirling engines 4 through this heat-conducting component 2. It employs a distributed system of multiple Stirling engines 4 coupled with a generator to generate electricity. If one Stirling engine 4 fails, it will not have a serious impact on the system, thus improving the redundancy of the power generation system. The connection of multiple Stirling engines 4 to the heat-conducting component 2 increases the system's heat exchange area, reduces heat exchange losses, and improves the thermoelectric conversion efficiency of the power generation system. Furthermore, because the size of a single Stirling engine 4 is relatively small, it not only allows for a more uniform heat distribution within the individual Stirling engine, improving thermoelectric heat exchange efficiency, but also significantly reduces the manufacturing difficulty of the Stirling engine 4, improving the precision and reliability of its mechanical moving parts.
[0037] In this embodiment of the invention, the heat-conducting element 2 and the Stirling engine 4 are located on the side of the heat pipe stack closer to the heat pipe 11, that is, the heat-conducting element 2, the heat pipe 11, and the Stirling engine 4 are located on the same side of the core 12. Specifically, one end of the heat pipe 11 is connected to the core 12, and the other end extends away from the core 12 and is connected to the heat-conducting element 2. The Stirling engine 4 is connected to the side of the heat-conducting element 2 away from the core 12.
[0038] The heat pipe 11 is configured as a straight pipe or near-straight pipe structure, which improves its thermal conductivity, reduces the heat transfer temperature difference, and increases thermoelectric conversion efficiency. Optionally, the central axis of the heat pipe 11 is parallel to the central axis of the Stirling engine 4. In practical applications, the heat pipe 11 can be arranged vertically, with multiple small Stirling engines 4 supported on the heat-conducting component 2, reducing the structural support difficulty of the Stirling engine 4 in the power generation system.
[0039] In this embodiment, the Stirling engine 4 can be positioned close to the heat pipe stack to avoid bending of the heat pipe 11 and reduce heat transfer loss. The gas chamber 40 of the Stirling engine 4 is connected to the compression chamber 30 of the generator via a gas supply pipe, such as a flexible metal hose. This structurally decouples the Stirling engine 4 from the generator, allowing for more flexible structural layout of the power generation system and expanding its application scenarios. Furthermore, it keeps the generator portion away from the reactor core, reducing radiation impact.
[0040] In this embodiment of the invention, multiple heat pipes 11 and multiple Stirling engines 4 are arranged alternately on the heat-conducting component 2. This allows the heat from the multiple heat pipes 11 to be conducted more evenly to the hot ends of each Stirling engine 4, improving the heat conduction efficiency and the thermoelectric conversion efficiency of the entire power generation system.
[0041] In some embodiments of the present invention, multiple heat pipes 11 are arranged in a honeycomb structure, and a Stirling engine 4 is provided between every three adjacent heat pipes 11 arranged in a triangular pattern connected to the heat-conducting element 2. The multiple Stirling engines 4 are also arranged in a honeycomb structure on the heat-conducting element 2. That is, every three adjacent Stirling engines 4 are arranged in an equilateral triangle structure, and every three adjacent heat pipes 11 are arranged in an equilateral triangle structure. Furthermore, a Stirling engine 4 is provided between every three adjacent triangularly arranged heat pipes 11, and a heat pipe 11 is provided between every three adjacent triangularly arranged Stirling engines 4. This structure improves the system's heat conduction efficiency and also enhances the strength of the connection structure between the heat pipes 11, the heat-conducting element 2, and the Stirling engines 4, thereby improving the stability of the system operation.
[0042] The heat pipe stack also includes multiple fuel rods, with at least one fuel rod between every two adjacent heat pipes 11. For example... Figure 1 and Figure 2 As shown, if there is one fuel rod between every two adjacent heat pipes 11, then each Stirling engine 4 corresponds to three adjacent fuel rods arranged in a triangular pattern. If there are two fuel rods between every two adjacent heat pipes 11, then each Stirling engine 4 corresponds to six adjacent fuel rods arranged in a hexagonal pattern.
[0043] Correspondingly, the reactor core 12 is provided with a plurality of first insertion holes 121 and a plurality of second insertion holes 122. A plurality of heat pipes 11 are inserted into a plurality of first insertion holes 121 in a corresponding manner, and a plurality of fuel rods are inserted into a plurality of second insertion holes 122 in a corresponding manner. At least one second insertion hole 122 is provided between every two adjacent first insertion holes 121.
[0044] like Figure 1 As shown in this embodiment of the invention, the heat-conducting component 2 is provided with multiple mounting holes 211, and multiple high-temperature heat exchangers 45 of the Stirling engine 4 are installed one-to-one in the multiple mounting holes 211. The high-temperature heat exchangers 45 are tightly fitted with the walls of the mounting holes 211. Optionally, the depth of the mounting holes 211 is equivalent to the axial length of the high-temperature heat exchangers 45, so that the high-temperature heat exchangers 45 and the heat-conducting component 2 have a large heat exchange area.
[0045] like Figure 2 and Figure 3 As shown in this embodiment of the invention, the heat-conducting component 2 includes multiple heat-conducting blocks 21, each heat-conducting block 21 being connected to at least one heat pipe 11, and the sides of the multiple heat-conducting blocks 21 being spliced together. The splicing of the sides of the multiple heat-conducting blocks 21 can form a larger heat-conducting component 2, and adjacent heat-conducting blocks 21 can conduct heat to each other. The shape of the heat-conducting blocks 21 can be an equilateral triangle, trapezoid, hexagon, etc., as long as multiple heat-conducting blocks 21 can be spliced together to form a heat-conducting component 2 with a large area; this embodiment does not specifically limit its shape. This embodiment uses a modular design for the heat-conducting component 2, allowing the number of heat-conducting blocks 21 to be set according to actual needs, thereby adjusting the area of the heat-conducting component 2 and the number of Stirling engines 4, and thus achieving regulation of the power generation.
[0046] In this embodiment of the invention, the heat-conducting component 2 is provided with a plurality of through holes 212, and a plurality of heat pipes 11 are respectively inserted through the plurality of through holes 212. Optionally, the thickness of the heat-conducting component 2 is equivalent to the size of the evaporation section of the heat pipe 11, so that the heat pipe 11 and the heat-conducting component 2 have the largest possible contact area.
[0047] One of the heat-conducting blocks 21 has at least one complete mounting hole 211 and multiple half-holes on its side. After two adjacent heat-conducting blocks 21 are joined together, multiple complete mounting holes 211 are formed between them, which can be used to install the Stirling engine 4. Figure 2 As shown, taking an equilateral triangle as an example, with six heat pipes 11 connected to one heat conductor 21, each heat conductor 21 has four complete mounting holes 211, one half-hole at each of the three corners, and five half-holes between each pair of adjacent half-holes. When two heat conductors 21 are joined together, four complete mounting holes 211 are formed between them. The structure of the heat conductor 21 in this embodiment is merely illustrative; the actual structure of each heat conductor 21 can be set as needed, such as... Figure 2 and Figure 3 As shown, the structures of different heat-conducting blocks 21 can be the same or different.
[0048] like Figure 2 As shown in the embodiment of the invention, the heat-conducting component 2 has a first side and a second side facing away from each other. The mounting hole 211 is a first countersunk hole on the first side, and the second side has a plurality of second countersunk holes 213. The plurality of first countersunk holes and the plurality of second countersunk holes 213 are arranged in a one-to-one correspondence. That is, the back of the mounting hole 211 on the heat-conducting component 2 is hollowed out to reduce the volume of the heat-conducting component 2, so that more heat from the heat pipe 11 is conducted to the position of the Stirling engine 4, thereby reducing the temperature gradient between the heat pipe 11 and the Stirling engine 4, improving the heat conduction efficiency, and thus improving the thermoelectric conversion efficiency. Optionally, the second countersunk holes 213 are coaxially corresponding to the mounting holes 211, and the size of the second countersunk holes 213 is not smaller than the size of the mounting holes 211.
[0049] In this embodiment of the invention, the generator is a linear generator 31 or a liquid metal magnetohydrodynamic generator 32.
[0050] like Figure 5 and Figure 6 As shown, the linear generator includes a housing 311, a free piston 312, an inner stator 313, an outer stator 314, and a leaf spring 315. A magnet is mounted on the free piston 312, and a coil is mounted on the outer stator 314. A compression chamber 30 is formed between the free piston 312 and the housing 311. The pressure wave generated by the movement of the exhaust manifold 42 of the Stirling engine 4 drives the free piston 312 to reciprocate. The magnet on the free piston 312 cuts magnetic field lines to generate electrical energy, thus achieving power generation.
[0051] like Figure 7 and Figure 8 As shown, the interior of the channel of the liquid metal magnetohydrodynamic generator 32 is filled with liquid metal. Elastic membranes at both ends of the channel separate the liquid metal from the external gas, thus forming a compression chamber at each end of the liquid metal magnetohydrodynamic generator 32. At least one compression chamber of the liquid metal magnetohydrodynamic generator 32 is connected to a Stirling engine 4. When both compression chambers are connected to Stirling engines 4, the compression chambers at both ends are connected to different Stirling engines 4. The pressure wave generated by the movement of the exhaust device 42 of the Stirling engine 4 compresses the metal working fluid inside the liquid metal magnetohydrodynamic generator 32, causing it to flow reciprocally within the channel, generating an electromotive force and thus generating electricity. Since the liquid metal magnetohydrodynamic generator 32 has no moving mechanical parts, its operational reliability and stability are high, which is beneficial for improving the reliability and stability of the power generation system.
[0052] Furthermore, there are two generators, coaxially opposed to each other. When the generators are linear generators 31, the free pistons 312 of the two linear generators 31 are coaxially arranged, and the two linear generators 31 are symmetrically arranged. The exhaust gas 42 of the Stirling engine 4 pushes gas into the compression chambers of the two linear generators simultaneously, which can simultaneously drive the free pistons 312 of the two linear generators to move in opposite directions, thereby reducing the vibration generated by the linear generators. Optionally, the two linear generators 31 can share a single housing 311, that is, the two linear generators 31 are integrated into a single opposed linear generator with two pistons, and a compression chamber is formed between the two free pistons 312 and the housing 311.
[0053] When the generator is a liquid metal magnetohydrodynamic generator 32, the magnetohydrodynamic channels of the two liquid metal magnetohydrodynamic generators 32 are coaxially arranged, and the two liquid metal magnetohydrodynamic generators 32 are arranged symmetrically to each other.
[0054] In some embodiments, the compression chambers of two liquid metal magnetohydrodynamic generators 32, whether close to or far apart, are connected to the gas chambers 40 of multiple Stirling engines 4. The exhaust device 42 of the Stirling engine 4 pushes gas into the compression chambers of the two liquid metal magnetohydrodynamic generators 32 simultaneously, thereby driving the liquid metal in the two generators 32 to flow in opposite directions, thus reducing the vibration generated by the generators.
[0055] In other embodiments, the multiple Stirling engines 4 are divided into two parts. The compression chambers of two liquid metal magnetohydrodynamic generators 32 that are close to each other are connected to the gas chamber 40 of one part of the Stirling engine 4. The compression chambers of two liquid metal magnetohydrodynamic generators 32 that are far from each other are connected to the gas chamber 40 of the other part of the Stirling engine 4. The two parts of the Stirling engine 4 are arranged at a cross interval on the heat-conducting element 2.
[0056] When the power generation system is working, one part of the Stirling engine 4 is used to push gas into the compression chambers of the two liquid metal magnetohydrodynamic generators 32 at their adjacent ends, so as to simultaneously squeeze the power generation working fluid in the two liquid metal magnetohydrodynamic generators 32 to move in a direction away from each other; the other part of the Stirling engine 4 is used to push gas into the compression chambers of the two liquid metal magnetohydrodynamic generators 32 at their distant ends, so as to simultaneously squeeze the power generation working fluid in the two liquid metal magnetohydrodynamic generators 32 to move in a direction closer to each other.
[0057] Since the phase difference between the two ends of each liquid metal magnetohydrodynamic generator 32 is 180°, the phase difference between the two Stirling engines 4 is also 180°. In this embodiment of the invention, by arranging these two Stirling engines 4 at intervals on the heat-conducting component 2, the vibration of the heat-conducting component 2 can be reduced.
[0058] In this embodiment of the invention, a vibration damper 5 is installed at the chamber end of the Stirling engine 4. This vibration damper can be an active or passive type, such as a leaf spring structure. The vibration damper 5 is connected to the outside of the chamber end of the Stirling engine 4 and is used to reduce the mechanical vibration generated by the movement of the exhaust manifold 42 within the Stirling engine 4. The chamber end of the Stirling engine 4 is the end closest to the chamber 40.
[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A distributed Stirling power generation system, characterized in that, include: Heat pipe stack, heat-conducting components, generator, and multiple Stirling engines; The heat pipe stack is provided with multiple heat pipes, and the multiple heat pipes and the multiple high-temperature end heat exchangers of the Stirling engine are respectively connected to the heat-conducting element, so that the heat of the heat pipes can be conducted to the high-temperature end heat exchangers through the heat-conducting element; the generator is provided with a compression chamber, and the gas chamber of each Stirling engine is connected to the compression chamber of the generator. The heat-conducting component and the Stirling engine are located on the side of the heat pipe stack closer to the heat pipe, and the gas chamber of the Stirling engine is connected to the compression chamber of the generator through a gas supply pipe. The generator is a linear generator or a liquid metal magnetohydrodynamic generator, and there are two generators, which are coaxially opposite each other. The compression chambers of two liquid metal magnetohydrodynamic generators that are close to each other or the compression chambers of two liquid metal magnetohydrodynamic generators that are far apart from each other are connected to the air chambers of multiple Stirling engines; or, the compression chambers of two liquid metal magnetohydrodynamic generators that are close to each other are connected to a portion of the air chambers of one Stirling engine, and the compression chambers of two liquid metal magnetohydrodynamic generators that are far apart from each other are connected to another portion of the air chambers of the Stirling engine, with the two portions of the Stirling engines arranged alternately on the heat-conducting component.
2. The distributed Stirling power generation system according to claim 1, characterized in that, The heat pipes and the Stirling engines are arranged alternately on the heat conductor.
3. The distributed Stirling power generation system according to claim 2, characterized in that, The heat pipes are arranged in a honeycomb structure, and a Stirling engine is provided between every three adjacent heat pipes arranged in a triangle connected to the heat conductor.
4. The distributed Stirling power generation system according to claim 1, characterized in that, The heat-conducting component is provided with multiple mounting holes, and the multiple high-temperature end heat exchangers of the Stirling engine are installed one-to-one in the multiple mounting holes.
5. The distributed Stirling power generation system according to claim 4, characterized in that, The heat-conducting component has a first side and a second side facing away from each other. The mounting hole is a first countersunk hole on the first side and a plurality of second countersunk holes on the second side. The plurality of mounting holes and the plurality of second countersunk holes are arranged in a one-to-one correspondence.
6. The distributed Stirling power generation system according to claim 1, characterized in that, The Stirling engine has a vibration damper installed at the air chamber end.
Citation Information
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