Generator supporting structure and generator

Abstract

The invention relates to the technical field of generators, in particular to a generator supporting structure and a generator. The generator supporting structure comprises a cylinder body, a first magnetic piece, a shaft sleeve and a second magnetic piece. A plurality of first assembling grooves are formed in the two axial ends of the cylinder body. The first magnetic piece is arranged in the first assembling groove; a plurality of second assembling grooves are formed in the two ends of the shaft sleeve; the second magnetic part is arranged in the second assembling groove, and magnetic force can be generated between the second magnetic part and the first magnetic part, so that the air distribution piston rod and the cylinder body are coaxial. The assembling grooves are formed in the two ends of the cylinder body and the two ends of the shaft sleeve, and the effect of magnetic force between the first magnetic part and the second magnetic part is utilized, so that the cylinder body and the shaft sleeve are coaxial; the radial supporting device has the advantages of being simple in structure and good in supporting effect, can effectively solve the radial supporting problem of the distribution piston of the free piston Stirling generator, avoids abrasion of the distribution piston and a power piston, improves the stability of the generator and prolongs the service life of the generator.

Description

Technical Field

[0001] The present invention relates to the technical field of generators, and in particular to a generator support structure and a generator. Background Art

[0002] The free piston Stirling generator is an external combustion heat-to-power conversion machine, which includes two moving parts: the valve piston and the power piston. The friction and wear caused by the piston during operation and the working fluid pollution and gas path blockage caused by the generated debris are key issues affecting the stability and life of the generator. The causes of wear between the piston and the cylinder mainly exist in the following aspects: 1) As for the valve piston system, it is the core component of the Stirling generator, which mainly includes the valve piston head, valve piston rod and valve piston leaf spring. The valve piston system is a long cantilever structure. The rod body needs to pass through the entire power piston. One end of the valve piston rod is the valve piston head, and the other end needs to be fixed to the valve piston leaf spring. Due to the processing accuracy and assembly accuracy, it is difficult to ensure the coaxiality of the piston and the cylinder, which causes the valve piston head and the valve piston rod to contact the cylinder, increasing the friction during operation. In addition, since the valve piston rod and the power piston need to cooperate with each other, the friction of the valve piston rod will also affect the operation of the power piston.

[0003] 2) For the power piston system, on the one hand, it is affected by the wear of the valve piston rod. On the other hand, the permanent magnet connected to the piston is far away from the equilibrium position in the radial direction due to insufficient processing and assembly accuracy, which causes the power piston and cylinder to contact, increasing the damping of the operation.

[0004] In order to reduce the wear of the piston, existing conventional solutions usually include the following: The first is to use double leaf spring support, with leaf springs at both ends of the valve piston rod providing radial support. The disadvantage of this solution is that the existing traditional flexible leaf spring structure is limited by materials, mechanical design and manufacturing process, which will limit the axial and radial stiffness, natural frequency, displacement stroke and effective operation times of the leaf spring, and there is a fatigue life problem.

[0005] The second is to use a solution that couples support with gas bearings and leaf springs. The gas bearing mainly provides radial support, while the leaf spring mainly provides axial support. The disadvantage of this solution is that sufficient gas pressure is required to achieve the bearing capacity of the gas bearing. At present, the high-pressure gas intercepted in the working chamber of the generator is usually used as the gas supply source in the gas bearing chamber, which will reduce the efficiency of the generator to a certain extent. Secondly, the throttle hole on the gas bearing is easy to clog, which will cause the actual bearing capacity of the gas bearing to be insufficient, thereby reducing the piston support effect.

[0006] In summary, the existing technical solutions have shortcomings and cannot meet the requirements of space energy systems for Stirling generators such as long life and high reliability. Summary of the invention

[0007] The present invention provides a generator support structure and a generator, which are used to solve the defects of short service life of double-plate spring support to reduce piston wear and low efficiency and poor support effect of gas bearing and plate spring coupling support in the prior art.

[0008] The present invention provides a generator support structure, comprising: A cylinder body is disposed inside the power piston, and a plurality of first assembly grooves are formed along the circumferential direction at both axial ends of the cylinder body; A first magnetic member is disposed in the first assembly groove; A shaft sleeve is sleeved on the gas distribution piston rod and placed inside the cylinder body, and a plurality of second assembly grooves are formed along the circumferential direction at both ends of the shaft sleeve; The second magnetic member is arranged in the second assembly groove, and a magnetic force can be generated between the second magnetic member and the first magnetic member to make the gas distribution piston rod coaxial with the cylinder body.

[0009] According to the generator support structure provided by the present invention, the polarities of the surfaces of the first magnetic member and the second magnetic member that are close to each other are the same; Furthermore, when the valve piston rod is coaxial with the cylinder body, the magnetic forces generated between the first magnetic member and the second magnetic member cancel each other out and are in a force balance state; When the gas distribution piston rod deviates from the axis of the cylinder body, a magnetic force is generated between the first magnetic component and the second magnetic component, and drives the gas distribution piston rod to move toward the axis of the cylinder body.

[0010] According to the generator support structure provided by the present invention, the first magnetic member is magnetized on the outer side of the first magnetic member, and the second magnetic member is magnetized on the inner side of the second magnetic member.

[0011] According to the generator support structure provided by the present invention, multiple first magnetic parts form an annular arrangement structure, multiple second magnetic parts form an annular arrangement structure, and the positions of the second magnetic parts on the annular arrangement structure correspond one-to-one to the positions of the first magnetic parts on the annular arrangement structure.

[0012] According to the generator support structure provided by the present invention, both the first magnetic member and the second magnetic member include magnets.

[0013] The present invention also provides a generator, comprising: the generator support structure provided by the present invention.

[0014] The generator provided by the present invention further comprises: Gas piston leaf spring; A gas distribution piston rod, one end of which is connected to the gas distribution piston leaf spring; The power piston is arranged on the outer side of the cylinder body.

[0015] The generator provided by the present invention further comprises: A first pressure ring is provided at one end of the shaft sleeve, and the valve piston rod is fastened to the shaft sleeve through the first pressure ring by a fastener; A second pressure ring is provided at one end of the cylinder body, and the cylinder body is fastened and connected to the power piston through the second pressure ring by a fastener; A mounting groove is formed at one end of the power piston away from the second pressure ring, and the cylinder body is arranged in the mounting groove and the other end thereof abuts against the end of the mounting groove.

[0016] The generator provided according to the present invention further comprises: a gas distribution piston head, which is arranged at the other end of the gas distribution piston rod.

[0017] The generator provided by the present invention further comprises: a housing, and a cooler, a regenerator, a heater, a housing and a linear motor arranged inside the housing, wherein the linear motor is connected to the power piston; Among them, an expansion chamber is formed in the shell at one end close to the gas distribution piston head, the cooler, heat regenerator and heater are all arranged close to the gas distribution piston head, a compression chamber is formed between the power piston, the shell and the gas distribution piston head, and a buffer chamber is formed between the linear motor and the shell.

[0018] The present invention provides a generator support structure, which includes: a cylinder body, a first magnetic part, a sleeve and a second magnetic part. The cylinder body is placed inside the power piston, and a plurality of first assembly grooves are formed circumferentially at both axial ends of the cylinder body; the first magnetic part is arranged in the first assembly groove; the sleeve is sleeved on the gas distribution piston rod and placed inside the cylinder body, and a plurality of second assembly grooves are formed circumferentially at both ends of the sleeve; the second magnetic part is arranged in the second assembly groove, and a magnetic force can be generated between the second magnetic part and the first magnetic part to make the gas distribution piston rod coaxial with the cylinder body. The present invention provides a generator support structure, which ensures the coaxiality of the cylinder body and the sleeve by setting assembly grooves at both ends of the cylinder body and the sleeve, and utilizing the magnetic force between the first magnetic part and the second magnetic part; the present invention is essentially a passive magnetic bearing support structure, which has the advantages of simple structure and good support effect, and can effectively solve the radial support problem of the gas distribution piston of the free piston Stirling generator, avoid the wear of the gas distribution piston and the power piston, and improve the stability and life of the generator.

[0019] Furthermore, a generator provided by the present invention has the same advantages as above because it includes the generator support structure in the above embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are 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.

[0021] Figure 1 It is a schematic diagram of the internal structure of a generator support structure provided in one embodiment of the present invention.

[0022] Figure 2 is a cross-sectional view of a generator support structure provided in one embodiment of the present invention.

[0023] Figure 3 It is a schematic diagram of the structure of a generator provided in one embodiment of the present invention.

[0024] Reference numerals: 1. Cooler; 2. Regenerator; 3. Heater; 4. Shell; 5. Expansion chamber; 6. Gas distribution piston assembly; 6-1. Gas distribution piston head; 6-2. Gas distribution piston rod; 7. Compression chamber; 8. Buffer chamber; 9. Linear motor; 10. Power piston; 11. Gas distribution piston leaf spring; 12. Bushing; 13. Second magnetic part; 14. Cylinder body; 15. First magnetic part; 16. Second pressure ring; 17. First pressure ring. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present embodiment.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this embodiment, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In this embodiment, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0029] 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.

[0030] Combine the following Figure 1-Figure 3 The present invention describes a generator support structure, which includes a cylinder 14 , a first magnetic member 15 , a shaft sleeve 12 and a second magnetic member 13 .

[0031] Among them, the cylinder body 14 is placed inside the power piston 10, and a plurality of first assembly grooves are formed circumferentially at both axial ends of the cylinder body 14; the first magnetic part 15 is arranged in the first assembly groove; the sleeve 12 is sleeved on the gas piston rod 6-2 and placed inside the cylinder body 14, and a plurality of second assembly grooves are formed circumferentially at both ends of the sleeve 12; the second magnetic part 13 is arranged in the second assembly groove, and a magnetic force can be generated between the second magnetic part 13 and the first magnetic part 15, so that the gas piston rod 6-2 is coaxial with the cylinder body 14.

[0032] Specifically, the cylinder body 14 generally adopts a cylinder structure, which is placed inside the power piston 10 and fixed to the power piston 10. The cylinder body 14 is formed with a plurality of first assembly grooves at both ends of the axial direction, and the plurality of first assembly grooves are distributed in an annular shape. A plurality of first magnetic parts 15 are also provided accordingly, and are installed in the first assembly grooves one by one. There is a gap between the cylinder body 14 and the sleeve 12 in the axial direction, so that the gas distribution piston rod 6-2 is adjusted to be coaxial with the cylinder body 14 through the magnetic force between the first magnetic part 15 and the second magnetic part 13.

[0033] The gas distribution piston assembly 6 includes a gas distribution piston rod 6-2 and a gas distribution piston head 6-1. One end of the gas distribution piston rod 6-2 is connected to the gas distribution piston leaf spring 11, and the other end is connected to the gas distribution piston head 6-1. The sleeve 12 is integrally sleeved on the outside of the gas distribution piston rod 6-2 and fixed to the gas distribution piston rod 6-2. The sleeve 12 is formed with a plurality of second assembly grooves at both ends of the axial direction. The plurality of second assembly grooves are distributed in an annular shape and correspond one to one with the positions of the first assembly grooves. A plurality of second magnetic members 13 are also correspondingly arranged and are installed in the second assembly grooves one to one. A magnetic force of magnetic attraction or magnetic repulsion is generated between the second magnetic member 13 and the first magnetic member 15, thereby ensuring that the gas distribution piston rod 6-2 is coaxial with the cylinder body 14.

[0034] It is understandable that when the gas distribution piston rod 6-2 is coaxial with the cylinder body 14, the first magnetic member 15 and the second magnetic member 13 also remain coaxial, and the two are in a state of force balance, and the interaction force between the two cancels out, so that the gas distribution piston rod 6-2 and the cylinder body 14 remain coaxial. If the gas distribution piston rod 6-2 deviates from the axis of the cylinder body 14, a magnetic force is generated between the first magnetic member 15 and the second magnetic member 13, forcing the gas distribution piston rod 6-2 to move toward the axis of the cylinder body 14, and finally the gas distribution piston rod 6-2 is coaxial with the cylinder body 14, thereby avoiding wear.

[0035] In addition, the above-mentioned assembly groove structure is provided at both ends of the cylinder body 14 and the sleeve 12, and magnetic parts are filled in the corresponding assembly grooves, so that both ends of the cylinder body 14 and the sleeve 12 can be guaranteed to be coaxial. It is a bearing double support structure, and through the two-point-one-line principle, it is ensured that the cylinder body 14 and the sleeve 12 are arranged coaxially as a whole.

[0036] The generator support structure described above is particularly suitable for free piston Stirling generators.

[0037] The present invention provides a generator support structure, which includes: a cylinder body 14, a first magnetic member 15, a sleeve 12 and a second magnetic member 13. The cylinder body 14 is placed inside the power piston 10, and a plurality of first assembly grooves are formed along the circumferential direction at both axial ends of the cylinder body 14; the first magnetic member 15 is arranged in the first assembly groove; the sleeve 12 is sleeved on the gas distribution piston rod 6-2 and placed inside the cylinder body 14, and a plurality of second assembly grooves are formed along the circumferential direction at both ends of the sleeve 12; the second magnetic member 13 is arranged in the second assembly groove, and a magnetic force can be generated between the second magnetic member 13 and the first magnetic member 15, so that the gas distribution piston rod 6-2 and the cylinder body 14 are coaxial. The present invention provides a generator support structure, which ensures the coaxiality of the cylinder body 14 and the shaft sleeve 12 by setting assembly grooves at both ends of the cylinder body 14 and the shaft sleeve 12 and utilizing the magnetic force between the first magnetic part 15 and the second magnetic part 13; the present invention is essentially a passive magnetic bearing support structure, which has the advantages of simple structure and good supporting effect, can effectively solve the radial support problem of the valve piston of the free piston Stirling generator, avoid the wear of the valve piston and the power piston 10, and improve the stability and life of the generator.

[0038] In one embodiment of the present invention, the polarity of the surfaces of the first magnetic member 15 and the second magnetic member 13 that are close to each other is the same. In addition, when the gas distribution piston rod 6-2 is coaxial with the cylinder body 14, the magnetic forces generated between the first magnetic member 15 and the second magnetic member 13 cancel each other out and are in a force balance state; when the gas distribution piston rod 6-2 deviates from the axis of the cylinder body 14, a magnetic force is generated between the first magnetic member 15 and the second magnetic member 13, and drives the gas distribution piston rod 6-2 to move toward the axis of the cylinder body 14. In this embodiment, due to the nested structure of the sleeve 12 and the cylinder body 14, the first assembly groove and the second assembly groove are also nested structures, so multiple first magnetic members 15 and multiple second magnetic members 13 also form a corresponding annular nested structure. When the valve piston rod 6-2 is coaxial with the cylinder body 14, the repulsive forces formed between the first magnetic part 15 and the second magnetic part 13 cancel each other out, and there is no force between the sleeve 12 and the cylinder body 14; when the valve piston rod 6-2 deviates from the axis of the cylinder body 14, the distance between the first magnetic part 15 and the second magnetic part 13 on one side decreases, and the distance on the other side increases, and the repulsive force generated on the side with a smaller distance is larger, which drives the sleeve 12 to move radially toward the axis of the cylinder body 14, and the sleeve 12 is reset, and finally the sleeve 12 and the cylinder body 14 are coaxial.

[0039] In one embodiment of the present invention, the first magnetic member 15 is magnetized on the outside of the first magnetic member 15, and the second magnetic member 13 is magnetized on the inside of the second magnetic member 13. In this embodiment, the first magnetic member 15 and the second magnetic member 13 are magnetized, the first magnetic member 15 is magnetized on the outside, and the second magnetic member 13 is magnetized on the inside, so that the polarity formed on the surfaces of the first magnetic member 15 and the second magnetic member 13 close to each other is the same, so that a repulsive force is generated between the first magnetic member 15 and the second magnetic member 13. Moreover, when the first magnetic member 15 and the second magnetic member 13 are close to each other, the repulsive force generated increases, and conversely, when the two are away from each other, the repulsive force generated decreases; therefore, in the annular structure composed of multiple first magnetic members 15 and multiple second magnetic members 13, the radial balance of the sleeve 12 can be maintained to ensure that the sleeve 12 is coaxial with the cylinder body 14.

[0040] In one embodiment of the present invention, a plurality of first magnetic members 15 form an annular arrangement structure, a plurality of second magnetic members 13 form an annular arrangement structure, and the position of the second magnetic member 13 on the annular arrangement structure corresponds one-to-one to the position of the first magnetic member 15 on the annular arrangement structure. In this embodiment, a plurality of first magnetic members 15 are arranged circumferentially to form an annular structure, a plurality of second magnetic members 13 are arranged circumferentially to form an annular structure, and the position of each first magnetic member 15 corresponds one-to-one to the position of each second magnetic member 13 on the corresponding annular structure, that is, the angle of each first magnetic member 15 in the annular structure is consistent with the angle of the corresponding second magnetic member 13 in the annular structure, ensuring that the magnetic force generated between the first magnetic member 15 and the second magnetic member 13 is along the radial direction of the cylinder body 14. Preferably, the number of the first assembly groove and the second assembly groove is the same, and the number of the first magnetic member 15 and the second magnetic member 13 is the same; preferably, the number of the first assembly groove, the second assembly groove, the first magnetic member 15 and the second magnetic member 13 is 10.

[0041] In one embodiment of the present invention, the first magnetic member 15 and the second magnetic member 13 both include magnets. Specifically, the first magnetic member 15 and the second magnetic member 13 are both permanent magnets, preferably ferrite magnets, alnico magnets, samarium cobalt magnets or neodymium iron boron magnets, etc., which can be selected according to the use environment of the generator.

[0042] like Figure 3 As shown, the present invention further provides a generator, which comprises: the generator support structure in the above embodiment of the present invention.

[0043] Specifically, the generator provided by the present invention is a free piston Stirling generator, which adopts the generator support structure in the above-mentioned embodiment of the present invention and adopts passive magnetic bearing support technology, which can effectively solve the radial support problem of the valve piston of the free piston Stirling generator, avoid the wear of the valve piston and the power piston 10, and improve the stability and life of the generator.

[0044] A generator provided by the present invention has the same advantages as above because it includes the generator support structure in the above embodiment of the present invention.

[0045] In one embodiment of the present invention, the generator further comprises: a gas distribution piston leaf spring 11, a gas distribution piston rod 6-2 and a power piston 10. One end of the gas distribution piston rod 6-2 is connected to the gas distribution piston leaf spring 11; the power piston 10 is arranged on the outside of the cylinder body 14.

[0046] In one embodiment of the present invention, the generator further includes: a gas distribution piston head 6-1, which is arranged at the other end of the gas distribution piston rod 6-2. Specifically, the gas distribution piston head 6-1 and the gas distribution piston rod 6-2 constitute a gas distribution piston assembly 6. One end of the gas distribution piston rod 6-2 is connected to the gas distribution piston leaf spring 11, and the other end is connected to the gas distribution piston head 6-1.

[0047] In one embodiment of the present invention, the generator further includes: a first pressure ring 17 and a second pressure ring 16. The first pressure ring 17 is arranged at one end of the sleeve 12, and the valve piston rod 6-2 is fastened to the sleeve 12 through the first pressure ring 17 by a fastener; the second pressure ring 16 is arranged at one end of the cylinder body 14, and the cylinder body 14 is fastened to the power piston 10 through the second pressure ring 16 by a fastener. An installation groove is formed at one end of the power piston 10 away from the second pressure ring 16, and the cylinder body 14 is arranged in the installation groove and the other end is abutted against the end of the installation groove. Specifically, the valve piston rod 6-2 is fastened to the sleeve 12 by the first pressure ring 17 and the fastener, and the cylinder body 14 is fastened to the power piston 10 by the second pressure ring 16 and the fastener. In addition, a mounting groove is provided at one end of the power piston 10 away from the second pressure ring 16. During the assembly of the cylinder body 14 , the cylinder body 14 is first pushed into the installation groove and positioned so as to abut against the end of the installation groove. Thereafter, the cylinder body 14 is securely connected to the power piston 10 using the second pressure ring 16 .

[0048] In one embodiment of the present invention, the generator further includes: a housing 4 and a cooler 1, a regenerator 2, a heater 3, a housing 4 and a linear motor 9 arranged inside the housing 4, and the linear motor 9 is connected to the power piston 10. An expansion chamber 5 is formed at one end of the housing 4 close to the gas distribution piston head 6-1, the cooler 1, the regenerator 2 and the heater 3 are all arranged close to the gas distribution piston head 6-1, a compression chamber 7 is formed between the power piston 10, the housing 4 and the gas distribution piston head 6-1, and a buffer chamber 8 is formed between the linear motor 9 and the housing 4.

[0049] In summary, the structure in the above embodiment provides a free piston Stirling generator, which has a passive permanent magnetic bearing support structure. The passive magnetic bearing support technology can effectively solve the radial support problem of the gas distribution piston of the free piston Stirling generator, avoid the wear of the gas distribution piston and the power piston 10, and improve the stability and life of the generator. When the generator is running, the sleeve 12 and the second magnetic part 13 will reciprocate with the gas distribution piston assembly 6, and the cylinder body 14 and the first magnetic part 15 will also reciprocate with the power piston 10. In order to ensure that the bearing always maintains radial support force, the length of the first magnetic part 15 must meet the second magnetic part 13 within the stroke of the two pistons (i.e., the gas distribution piston and the power piston 10) does not exceed the corresponding range of the first magnetic part 15.

[0050] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed over multiple units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. Those of ordinary skill in the art may understand and implement the present invention without creative effort.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A generator support structure, characterized in that: include: A cylinder body (14) is disposed inside the power piston (10), and a plurality of first assembly grooves are formed along the circumferential direction at both axial ends of the cylinder body (14); A first magnetic member (15) is disposed in the first assembly groove; A shaft sleeve (12) is sleeved on the gas distribution piston rod (6-2) and is placed inside the cylinder body (14), and a plurality of second assembly grooves are formed along the circumferential direction at both ends of the shaft sleeve (12); The second magnetic member (13) is disposed in the second assembly groove, and a magnetic force can be generated between the second magnetic member (13) and the first magnetic member (15) so as to make the gas distribution piston rod (6-2) coaxial with the cylinder body (14).

2. The generator support structure according to claim 1, characterized in that: The polarities of surfaces of the first magnetic member (15) and the second magnetic member (13) that are close to each other are the same; Furthermore, when the gas distribution piston rod (6-2) and the cylinder body (14) are coaxial, the magnetic forces generated between the first magnetic member (15) and the second magnetic member (13) cancel each other out and are in a force balance state; When the gas distribution piston rod (6-2) deviates from the axis of the cylinder body (14), a magnetic force is generated between the first magnetic component (15) and the second magnetic component (13), and drives the gas distribution piston rod (6-2) to move in the direction of the axis of the cylinder body (14).

3. The generator support structure according to claim 2, characterized in that: The first magnetic member (15) is magnetized on the outer side of the first magnetic member (15), and the second magnetic member (13) is magnetized on the inner side of the second magnetic member (13).

4. The generator support structure according to claim 1, characterized in that: A plurality of the first magnetic members (15) form an annular arrangement structure, a plurality of the second magnetic members (13) form an annular arrangement structure, and positions of the second magnetic members (13) on the annular arrangement structure correspond one-to-one to positions of the first magnetic members (15) on the annular arrangement structure.

5. The generator support structure according to any one of claims 1 to 4, characterized in that: The first magnetic member (15) and the second magnetic member (13) both comprise magnets.

6. A generator, characterized in that: include: A generator support structure as claimed in any one of claims 1 to 5.

7. The generator according to claim 6, characterized in that: Also includes: Gas distribution piston leaf spring (11); A gas distribution piston rod (6-2), one end of which is connected to the gas distribution piston leaf spring (11); The power piston (10) is arranged outside the cylinder body (14).

8. The generator according to claim 7, characterized in that: Also includes: A first pressure ring (17) is arranged at one end of the shaft sleeve (12), and the valve piston rod (6-2) is fastened to the shaft sleeve (12) by means of a fastener through the first pressure ring (17); A second pressure ring (16) is disposed at one end of the cylinder body (14), and the cylinder body (14) is fastened to the power piston (10) via the second pressure ring (16) by means of a fastener; A mounting groove is formed at one end of the power piston (10) away from the second pressure ring (16); the cylinder body (14) is arranged in the mounting groove and the other end abuts against an end of the mounting groove.

9. The generator according to claim 7, characterized in that: Also includes: The gas distribution piston head (6-1) is arranged at the other end of the gas distribution piston rod (6-2).

10. The generator according to claim 9, characterized in that: Also includes: A shell (4), and a cooler (1), a heat regenerator (2), a heater (3), a shell (4), and a linear motor (9) arranged inside the shell (4), wherein the linear motor (9) is connected to the power piston (10); An expansion chamber (5) is formed in the shell (4) at one end close to the gas distribution piston head (6-1); the cooler (1), the heat regenerator (2) and the heater (3) are all arranged close to the gas distribution piston head (6-1); a compression chamber (7) is formed between the power piston (10), the shell (4) and the gas distribution piston head (6-1); and a buffer chamber (8) is formed between the linear motor (9) and the shell (4).

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