Electric coupling Stirling generator system with double opposed generators

Abstract

The utility model relates to the technical field of engines, and provides an electric coupling double-engine opposed Stirling generator system, which comprises a pair of Stirling generators and a load, the pair of Stirling generators comprises a first Stirling generator and a second Stirling generator which are oppositely arranged, the first Stirling generator and the second Stirling generator have the same structure; the first end of the load is electrically connected with the negative terminal of the first Stirling generator and the negative terminal of the second Stirling generator through wires, and the second end of the load is electrically connected with the positive terminal of the first Stirling generator and the positive terminal of the second Stirling generator through wires; according to the utility model, the cooperative operation of the two generators can be realized through electric connection, the structure of the system is simplified, and the vibration level of the whole system is obviously reduced; and the two Stirling generators are connected in parallel to realize cooperative operation and are mutually independent, so that the overall reliability of the system is ensured, and the fault-tolerant capability of the system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine, especially to a kind of electric coupling double-machine opposed stirling generator system. BACKGROUND

[0002] The free-piston stirling generator is a heat engine based on stirling cycle, and two high-frequency reciprocating pistons exist inside it. When the generator operates, the power piston drives the linear motor to move, which will give the coil fixed on the generator housing a reciprocating force, and the movement of the valve piston will also be transmitted to the generator housing through the plate spring connected thereto. When the two pistons move, the piston mass and stroke are inconsistent, so the reciprocating force acting on the shell is different in size, and there is also a certain phase difference in the movement of the two pistons, so the vibration of the shell is difficult to offset. Therefore, vibration is an inherent property of the free-piston stirling generator.

[0003] For the vibration problem of the free-piston stirling generator, the most commonly used and effective solution is to adopt the double-machine opposed mode to form a free-piston stirling generator unit. In theory, as long as two identical stirling generators are opposed and the piston systems of the two generators operate in opposite directions, the vibrations of the two generators can be completely offset, so that the entire system is vibration-free. The two opposed stirling generators have the same operating frequency and opposite piston vibration directions, and the vibrations of the two generators are offset. This state is defined as the two generators being in a coordinated operation state. In order to realize the coordinated operation of the two stirling generators, the conventional technical solutions usually include the following.

[0004] The first is that the two stirling generators are completely independent inside, and are connected only by mechanical opposition, which is called "force coupling". The basic principle is to directly use the mechanical fixing method to oppose the two generators, and the vibrations of the two generators are transmitted, influenced and adjusted to each other, so that the piston vibration frequencies of the two generators are the same, the vibration directions are opposite, and the system vibrations are offset. The advantage of this scheme is that the generators are independent of each other and the structure is simple. And when one of them has problems such as air leakage, piston jamming and performance change, the other one can still work. The disadvantage is that it is only connected mechanically, and to realize the mutual transmission of vibration, the two generators and the fixed platform must be elastically connected and have certain requirements for the elasticity, if the elasticity is small or even rigid connection, the vibration of the two generators cannot be transmitted, adjusted and adapted to each other, and the two generators cannot achieve coordinated operation to achieve vibration reduction. In addition, in theory, the two generators need to be completely consistent, but in practice, due to machining, assembly and other reasons, there will be some differences between the two generators, and the greater the difference, the more difficult the two generators will be coordinated.

[0005] The second is that two Stirling generators are mechanically connected and share the expansion cavity or the compression cavity at the same time, which is called "air coupling". The basic principle is that two working cavities of the two generators are connected through an external pipeline or the like, and when the internal gases of the two generators are the same, the pressure waves that drive the pistons to move will be exactly the same, so that the two generators in opposition operate in the same condition but in opposite phases, thereby offsetting the vibration. The scheme has the advantages that it is easier to realize the cooperative operation of the two generators, and the environmental requirements for the installation of the generators are lower. The disadvantage is that when one of the two generators has problems such as air leakage, piston jamming and performance change, the other generator cannot operate normally, which greatly reduces the reliability of the system. Meanwhile, the external connection pipeline increases the complexity of the system.

[0006] In summary, the existing technical solutions have defects and cannot meet the requirements of the space energy system on the Stirling generator in terms of long service life, high reliability and low vibration. Practical new type content

[0007] The utility model provides a kind of electric coupling double-machine opposed Stirling generator system to solve the problem that existing technology cannot meet the low vibration requirement of Stirling generator, and realizes the technical effect of easier cooperative operation by electric coupling.

[0008] The utility model provides a kind of electric coupling double-machine opposed Stirling generator system, comprising:

[0009] A pair of Stirling generators, comprising oppositely arranged first Stirling generator and second Stirling generator, the structure of the first Stirling generator and the second Stirling generator is same;

[0010] Load, the first end of the load is simultaneously electrically connected with the negative electrode wiring end of the first Stirling generator and the second Stirling generator by wire, and the second end of the load is respectively electrically connected with the positive electrode wiring end of the first Stirling generator and the second Stirling generator by wire.

[0011] According to the electric coupling double-machine opposed Stirling generator system provided by the utility model, a first capacitor is arranged on the wire between the second end of the load and the positive electrode wiring end of the first Stirling generator;

[0012] A second capacitor is arranged on the wire between the second end of the load and the positive electrode wiring end of the second Stirling generator.

[0013] According to the electric coupling double-machine opposed Stirling generator system provided by the utility model, it further comprises a fixed platform, and the first Stirling generator and the second Stirling generator are arranged on the fixed platform.

[0014] The electrically coupled double-machine opposed Stirling generator system further comprises a supporting piece, the supporting piece is arranged on the fixed platform, and the first Stirling generator and the second Stirling generator are connected with the supporting piece.

[0015] The electrically coupled double-machine opposed Stirling generator system further comprises a supporting piece, the supporting piece is arranged on the fixed platform, and the first Stirling generator and the second Stirling generator are connected with the supporting piece.

[0016] The second Stirling generator comprises a second Stirling engine and a second linear generator, the second Stirling engine can drive the second linear generator to generate electricity, and the load and the second capacitor are electrically connected with the second linear generator.

[0017] The electrically coupled double-machine opposed Stirling generator system further comprises a supporting piece, the supporting piece is arranged on the fixed platform, and the first Stirling generator and the second Stirling generator are connected with the supporting piece.

[0018] The generator shell;

[0019] The gas distribution piston is arranged in the generator shell, and an expansion cavity is formed between the gas distribution piston and the generator shell.

[0020] The power piston is arranged in the generator shell, the power piston is connected with the mover of the first linear generator, a compression cavity is formed between the power piston and the gas distribution piston, and a back pressure cavity is formed between the power piston and the generator shell.

[0021] The electrically coupled double-machine opposed Stirling generator system further comprises a supporting piece, the supporting piece is arranged on the fixed platform, and the first Stirling generator and the second Stirling generator are connected with the supporting piece.

[0022] The first Stirling engine and the second Stirling engine both comprise a heater, a regenerator and a cooler arranged on the outer periphery of the gas distribution piston, and the heater, the regenerator and the cooler are sequentially arranged in the direction from the expansion cavity to the compression cavity.

[0023] The heater, the regenerator and the cooler are in a cylindrical structure and are coaxially arranged with the gas distribution piston.

[0024] The electrically coupled double-machine opposed Stirling generator system further comprises a supporting piece, the supporting piece is arranged on the fixed platform, and the first Stirling generator and the second Stirling generator are connected with the supporting piece.

[0025] The utility model provides a kind of electric coupling double-machine opposed Stirling generator system, including a pair of Stirling generator and load, relative to traditional "force coupling" or "air coupling" scheme, this parallel connection mode does not need complex mechanical connection or external pipeline to realize vibration cancellation, the cooperative operation of two generators can be realized by electrical connection, simplify the structure of system, reduce maintenance cost;And the cooperative operation of two Stirling generators is realized by parallel connection, and independent of each other, even if one of Stirling generator fails, another Stirling generator can still continue to work, ensure the overall reliability of system, improve the fault tolerance of system. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme of the utility model or the prior art, the following will be a simple introduction to the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0027] Figure 1 It is a kind of electric coupling double-machine opposed Stirling generator system structure schematic diagram provided by the utility model embodiment.

[0028] Reference signs:

[0029] 100, expansion chamber;200, compression chamber;300, back pressure chamber;

[0030] 1, load;2, first capacitor;3, second capacitor;4, fixed platform;5, support;6, first Stirling engine;7, first linear generator;8, second Stirling engine;9, second linear generator;10, generator housing;11, valve piston;12, power piston;13, elastic member;14, heater;15, regenerator;16, cooler. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantage of the utility model more clear, the following will be combined with the drawings in the utility model, the technical scheme in the utility model is clearly and completely described, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creating labor belong to the scope of protection of the utility model.

[0032] The following will be combined Figure 1 The utility model discloses a kind of electric coupling double-machine opposed Stirling generator system.

[0033] The utility model discloses a kind of electrically coupled double-machine opposed Stirling generator systems, comprising: a pair of Stirling generators and load 1.In this embodiment, two Stirling generators of opposition are independent in structure, operating frequency is completely same, piston vibration direction is opposite, so that the vibration of two Stirling generators can be cancelled out, define this state as two Stirling generators are in collaborative operation state.

[0034] Specifically, a pair of Stirling generators includes oppositely arranged first Stirling generator and second Stirling generator, and the first Stirling generator and the second Stirling generator are of the same structure; the first end of the load 1 is electrically connected to the negative terminal of the first Stirling generator and the second Stirling generator through wires, and the second end of the load 1 is electrically connected to the positive terminal of the first Stirling generator and the second Stirling generator through wires, respectively.

[0035] Through the above-mentioned scheme, it can be known that the utility model directly connects the output circuits of two Stirling generators in parallel to the same load 1, and the current generated by any one of the Stirling generators will flow through the circuit of the other Stirling generator. This two-way energy transfer promotes electromagnetic coupling between the two Stirling generators, making it easier to achieve synchronous operation. Moreover, due to the mutual influence of the output voltage and current of the two Stirling generators, the system can dynamically adjust the operating state of each generator to maintain the stability of the total output power. The parallel connection of the load 1 allows the two Stirling generators to share the external load 1. If the output power of one of the Stirling generators changes, for example, due to temperature changes or mechanical wear, the other Stirling generator will automatically adjust its output to maintain the stability of the total output power. This adaptive load distribution mechanism helps to maintain the stability of the system and ensures that the pistons of the two Stirling generators vibrate in opposite phases, i.e., the generated vibration forces cancel each other out in space, thereby achieving vibration cancellation and significantly reducing the vibration level of the entire system.

[0036] The utility model is different from the traditional "force coupling" or "air coupling" scheme. This parallel connection method does not require complex mechanical connections or external pipelines to achieve vibration cancellation. Through electrical connection, the two generators can be operated collaboratively, simplifying the structure of the system and reducing maintenance costs. Moreover, the two Stirling generators are connected in parallel to achieve collaborative operation and are independent of each other. Even if one of the Stirling generators fails, the other Stirling generator can still continue to work, ensuring the overall reliability of the system and improving the fault tolerance of the system.

[0037] Further, a first capacitor 2 is arranged on the wire between the second end of the load 1 and the positive terminal of the first Stirling generator; and a second capacitor 3 is arranged on the wire between the second end of the load 1 and the positive terminal of the second Stirling generator.

[0038] In this way, by connecting a capacitor to the output circuit of each Stirling generator, the capacitor can compensate for the inductive effect caused by the generator winding, and the compensation of the capacitor not only helps to improve the power factor, but also makes the system more easily reach a resonant state, in which the generator can work more efficiently, reducing energy loss, and the output voltage and current of the generator are more stable, further improving the efficiency of the system.

[0039] In some specific embodiments, a fixed platform 4 is further included, and the first Stirling generator and the second Stirling generator are arranged on the fixed platform 4; as shown in the figure, the fixed platform 4 provides a common mechanical base for the two Stirling generators, so that the vibrations between them can be transmitted and adjusted through the platform, ensuring that they will not be displaced or shaken unnecessarily during operation, which helps to keep the relative positions of the two Stirling generators fixed, thereby ensuring that a pair of Stirling generators can vibrate in opposite phases to achieve effective vibration cancellation, which helps the two generators to reach a synchronous operation state more quickly, further improving the vibration reduction effect. Figure 1

[0040] In this way, by installing the two Stirling generators on the same fixed platform 4, the installation process can be greatly simplified, and the fixed platform 4 provides a centralized working space, which reduces the installation time and makes the maintenance of the two generators more convenient. If one of the Stirling generators needs to be repaired or replaced, the technician can operate without disassembling the other Stirling generator; in addition, the relative positions between the two Stirling generators can be accurately controlled through the fixed platform 4, ensuring that they are in an ideal opposite state, which helps to realize the vibration of the pistons of the two Stirling generators in opposite phases, thereby maximizing the cancellation of vibration.

[0041] At the same time, the design of the fixed platform 4 can also provide a good heat dissipation environment for the two Stirling generators. Through reasonable layout and ventilation design, for example, by reasonably designing the material and structure of the fixed platform 4 and setting up water cooling or air cooling devices, the heat generated during the operation of the generators can be effectively conducted and dissipated, ensuring that the Stirling generators can effectively dissipate heat during operation, avoiding performance degradation or failure due to overheating.

[0042] ​Further, the support 5 is arranged on the fixed platform 4, and the first Stirling generator and the second Stirling generator are connected with the support 5; for example, the support 5 can be a support plate, and the design of the support plate should also consider its strength and rigidity to ensure that it can withstand various forces and vibrations generated by the generators during operation. By using high-strength materials and optimizing the structural design, the support plate can have sufficient carrying capacity and stability to ensure the safe operation of the entire system.

[0043] In this way, on the one hand, the support 5 can reduce installation errors. Through the precise positioning of the support 5, the center lines of the two Stirling generators are completely aligned, and they are in the ideal opposite state, which is crucial for improving the vibration reduction effect of the system and helps to realize the vibration of the pistons of the two Stirling generators in completely opposite phases to maximize the cancellation of vibration.

[0044] On the other hand, the support 5 can adjust the vibration frequency. By selecting different characteristics of the support 5 material such as rigidity, elasticity, etc., the vibration frequency between the two Stirling generators can be adjusted to be more matched, which helps to optimize the vibration reduction performance of the system, especially in a high-frequency vibration environment.

[0045] In this embodiment, the first Stirling generator and the second Stirling generator are independent of each other and have the same structure; as shown in Figure 1 The first Stirling generator includes a first Stirling engine 6 and a first linear generator 7, and the first Stirling engine 6 and the first linear generator 7 are both installed on the fixed platform 4 through the support 5. The first Stirling engine 6 can drive the first linear generator 7 to generate electricity, and the load 1 and the first capacitor 2 are electrically connected with the first linear generator 7.

[0046] The second Stirling generator includes a second Stirling engine 8 and a second linear generator 9, and the second Stirling engine 8 and the second linear generator 9 are both installed on the fixed platform 4 through the support 5. The second Stirling engine 8 can drive the second linear generator 9 to generate electricity, and the load 1 and the second capacitor 3 are electrically connected with the second linear generator 9; wherein the first Stirling engine 6 and the second Stirling engine 8 are both free-piston Stirling engines, and the first Stirling engine 6, the first linear generator 7, the second Stirling engine 8 and the second linear generator 9 are arranged coaxially and horizontally along a straight line on the fixed platform 4.

[0047] In this embodiment, the first Stirling engine 6 and the second Stirling engine 8 both include a heater 14, a regenerator 15 and a cooler 16 arranged on the outer periphery of a gas distribution piston 11. In the direction from the expansion chamber 100 to the compression chamber 200, the heater 14, the regenerator 15 and the cooler 16 are arranged in sequence.

[0048] Since a large amount of heat will be generated during the movement of the gas distribution piston 11, by arranging the cooler 16 on the outer periphery of the gas distribution piston 11, it can ensure that the cooler 16 can directly contact the heat generated by the gas distribution piston 11, so as to quickly take it away and prevent the heat from accumulating inside the Stirling generator. The main function of the regenerator 15 is to recover and utilize the heat energy lost in the cooling process, thereby improving the thermal efficiency of the Stirling generator. During the operation of the Stirling generator, the cooler 16 will cool the gas distribution piston 11 and other key components, and a certain amount of heat energy will be lost during this process. By arranging the regenerator 15, these lost heat energy can be recovered and reused, reducing energy waste. The main function of the heater 14 is to provide the necessary heat energy for the Stirling generator to drive the expansion and compression of the gas during the circulation process. By providing an external heat source to the heater 14, the gas can be heated and expanded to generate power to drive the movement of the gas distribution piston 11, which in turn is converted into electrical energy by the linear motor, realizing the power generation function of the Stirling generator.

[0049] It should be noted that the heater 14, the regenerator 15 and the cooler 16 are all products in the prior art, and their specific structure and principle are not the focus of this article, which will not be repeated here.

[0050] Optionally, the heater 14, the regenerator 15 and the cooler 16 are in a cylindrical structure and are coaxially arranged with the gas distribution piston 11 for the gas distribution piston 11 to pass through.

[0051] In some specific embodiments, the first Stirling generator further comprises a generator housing 10, a gas distribution piston 11 and a power piston 12; wherein the first Stirling engine 6 and the first linear generator 7 are arranged in the generator housing 10, and the generator housing 10 serves as the main structure of the entire Stirling generator, not only supporting and protecting the internal components, but also ensuring the sealing of the gas circulation inside. The gas distribution piston 11 is arranged in the generator housing 10, and the compression chamber 200 is formed between the gas distribution piston 11 and the power piston 12, and the expansion chamber 100 is formed between the gas distribution piston 11 and the generator housing 10; the power piston 12 is arranged in the generator housing 10, and the mover of the first linear generator 7 is connected to the power piston 12, and the back pressure chamber 300 is formed between the power piston 12 and the generator housing 10.

[0052] The main function of the gas distribution piston 11 is to periodically move and redistribute the working gas such as helium or hydrogen between the hot end and the cold end. Through this movement, the gas distribution piston 11 can control the flow of gas between different temperature regions, thereby achieving heat transfer and work output. The arrangement of the gas distribution piston 11 enables the Stirling generator to realize the orderly circulation of the gas, ensuring that the gas flows along the predetermined path between the compression chamber 200, the expansion chamber 100 and the back pressure chamber 300.

[0053] The main function of the power piston 12 is to convert the pressure changes generated by the expansion and contraction of the gas into mechanical work. The compression chamber 200 is where the gas is compressed, and the expansion chamber 100 is where the gas expands and releases energy. The two chambers work together with the valve piston 11 and the power piston 12 to complete the compression, expansion, and energy conversion process of the gas. When the power piston 12 reciprocates under the push of the gas, it drives the generator rotor to move, causing the generator rotor to move relative to the generator stator and generate electricity. For example, the generator stator can be a generator coil, and the generator rotor can be a generator magnet, so the first linear generator 7 converts this mechanical movement into electrical energy.

[0054] Further, it also includes a resilient member 13, which is preferably a leaf spring. The resilient member 13 is arranged in the generator housing 10 and located outside the end of the power piston 12 away from the valve piston 11, and the resilient member 13 is connected with the valve piston 11. In this way, the resilient member 13 can act as a buffer to absorb the impact force of the power piston 12 and the valve piston 11 during reciprocation, reducing the damage of mechanical impact to the pistons and related components, which helps to prolong the service life of the pistons and other internal parts. Moreover, the resilient member 13 can provide a constant reaction force during the movement of the valve piston 11, helping to stabilize the stroke of the valve piston 11 and ensuring its movement more stable and accurate. Furthermore, the resilient member 13 can effectively reduce the vibration level inside the generator by absorbing and dispersing the vibration energy generated by the piston movement, especially in high-frequency reciprocation, the resilient member 13 can significantly reduce the vibration transmission to the generator housing 10, thereby reducing the vibration output of the entire system.

[0055] The utility model discloses a pair of Stirling generators are connected in parallel to the same load 1, and the system can realize the following remarkable effects: 1, vibration cancellation, the pistons of the two Stirling generators vibrate in opposite phases, effectively reducing the vibration level of the system.

[0056] 2, load 1 balance, the two generators jointly bear the external load 1, ensuring the stability and reliability of the system.

[0057] 3, optimization design, compared with the traditional mechanical coupling or gas coupling scheme, this electrical connection mode simplifies the system structure and reduces the maintenance cost. Even if one generator fails, the other generator can still work, improving the fault tolerance of the system.

[0058] 4, two Stirling generators are integrated on a fixed platform 4, forming a modular power generation unit, making the whole system easier to transport and deploy, especially suitable for occasions requiring quick installation, such as field operations, emergency power supply, etc.

[0059] In the description of the embodiments of the utility model, it needs to be explained that, unless there is explicit provision and limitation, the terms "connected", "connected" should be understood broadly, for example, it can be fixed connection, also can be detachable connection, or integral connection, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium.

[0060] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "way", "specific way" or "some ways" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or way are included in at least one embodiment or way of the utility model. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or way. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or ways in a suitable way. In addition, the skilled in the art can combine and combine the different embodiments or characteristics of different embodiments or ways described in the present application without contradiction.

[0061] Finally, it should be pointed out that: the above examples are only used to illustrate the technical scheme of the utility model, and not to limit it; although the utility model is described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the spirit and scope of the technical scheme of the embodiments of the utility model.

Claims

1. An electrically coupled dual-opposed Stirling engine system, characterized by, The utility model relates to a kind of Stirling generator, comprising: A pair of Stirling generators, including oppositely arranged first Stirling generator and second Stirling generator, the first Stirling generator and the second Stirling generator are identical in structure; Load (1), the first end of the load (1) is electrically connected with the negative terminal of the first Stirling generator and the second Stirling generator through wire simultaneously, and the second end of the load (1) is electrically connected with the positive terminal of the first Stirling generator and the second Stirling generator through wire respectively.

2. The electrically coupled dual-opposed Stirling generator system of claim 1, wherein, The first capacitor (2) is arranged on the wire between the second end of the load (1) and the positive terminal of the first Stirling generator; The second capacitor (3) is arranged on the wire between the second end of the load (1) and the positive terminal of the second Stirling generator.

3. The electrically coupled dual-opposed Stirling generator system of claim 1 wherein, It further comprises a fixed platform (4), and the first Stirling generator and the second Stirling generator are arranged on the fixed platform (4).

4. The electrically coupled dual-opposed Stirling generator system of claim 3, wherein, It further comprises a support (5), and the support (5) is arranged on the fixed platform (4), and the first Stirling generator and the second Stirling generator are connected with the support (5).

5. The electrically coupled dual-opposed Stirling generator system of claim 2 wherein, The first Stirling generator comprises a first Stirling engine (6) and a first linear generator (7), the first Stirling engine (6) can drive the first linear generator (7) to generate electricity, and the load (1) and the first capacitor (2) are electrically connected with the first linear generator (7); The second Stirling generator comprises a second Stirling engine (8) and a second linear generator (9), the second Stirling engine (8) can drive the second linear generator (9) to generate electricity, and the load (1) and the second capacitor (3) are electrically connected with the second linear generator (9).

6. The electrically coupled dual-opposed Stirling generator system of claim 5 wherein, The first Stirling generator further comprises: A generator housing (10); A valve piston (11) is arranged in the generator housing (10), and an expansion cavity (100) is formed between the valve piston (11) and the generator housing (10); A power piston (12) is arranged in the generator housing (10), the power piston (12) is connected with the mover of the first linear generator (7), a compression cavity (200) is formed between the power piston (12) and the valve piston (11), and a back pressure cavity (300) is formed between the power piston (12) and the generator housing (10).

7. The electrically coupled dual-opposed Stirling generator system of claim 6 wherein, It further comprises an elastic member (13), which is arranged in the generator housing (10) and located outside the end of the power piston (12) away from the valve piston (11), and the elastic member (13) is connected with the valve piston (11).

8. The electrically coupled dual-opposed Stirling generator system of claim 6, wherein, The first Stirling engine (6) and the second Stirling engine (8) each comprise a heater (14), a regenerator (15) and a cooler (16) arranged on the outer periphery of the gas distribution piston (11), and the heater (14), the regenerator (15) and the cooler (16) are arranged in sequence in the direction from the expansion chamber (100) to the compression chamber (200).

9. The electrically coupled dual-opposed Stirling generator system of claim 8, wherein, The heater (14), the regenerator (15) and the cooler (16) are in a cylindrical structure and coaxially arranged with the gas distribution piston (11).

10. The electrically coupled dual-opposed Stirling generator system of claim 7, wherein, The elastic member (13) is a leaf spring.

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