Generator supporting structure and generator

Abstract

The utility model 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 coaxiality of the cylinder body and the shaft sleeve is guaranteed through the magnetic force effect between the first magnetic piece and the second magnetic piece; 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 utility model relates to generator technical field especially relates to a generator support structure and generator. BACKGROUND

[0002] The free piston Stirling generator is an external combustion heat engine, which includes two moving parts of a gas distribution piston and a power piston. The friction and wear caused by the piston operation and the pollution of the working medium and the blockage of the gas path caused by the wear debris are the key problems affecting the operation stability and service life of the generator. The main reasons for the wear between the piston and the cylinder exist in the following aspects:

[0003] 1) For the gas distribution piston system, it is the core component of the Stirling generator, which mainly includes a gas distribution piston head, a gas distribution piston rod and a gas distribution piston plate spring. The gas distribution piston system is a long cantilever structure, the rod needs to pass through the entire power piston, one end of the gas distribution piston rod is the gas distribution piston head, and the other end needs to be fixed with the gas distribution piston plate spring. Due to the machining precision and assembly precision, it is difficult to ensure the coaxiality of the piston and the cylinder, which causes the gas distribution piston head and the gas distribution piston rod to contact the cylinder, increasing the running friction. Moreover, due to the requirement of mutual cooperation between the gas distribution piston rod and the power piston, the friction of the gas distribution piston rod will also affect the operation of the power piston.

[0004] 2) For the power piston system, on the one hand, it is affected by the wear of the gas distribution piston rod, and on the other hand, the permanent magnet connected to the piston is subjected to a large radial force away from the balance position due to the lack of machining and assembly precision in the radial direction, causing the power piston to contact the cylinder, increasing the running damping.

[0005] In order to reduce the wear of the piston, the existing conventional solutions usually include the following:

[0006] The first one is to use double plate springs to support, and plate springs are used to provide radial support at both ends of the gas distribution piston rod. The disadvantage of this scheme is that the existing traditional flexible plate spring structure is limited by material, mechanical design and immature manufacturing process, which limits the axial, radial stiffness, natural frequency, displacement stroke and effective operation times of the plate spring, and there is a fatigue life problem.

[0007] The second kind is a scheme of coupling support of a gas bearing and a plate spring. The gas bearing mainly provides radial support, and the plate spring mainly provides axial support. The scheme has the disadvantages that the gas bearing load needs to provide sufficient gas pressure, and the high-pressure gas in the generator working cavity is usually intercepted as the gas supply source in the gas bearing cavity, thus reducing the efficiency of the generator to a certain extent. In addition, the throttle hole of the gas bearing is easy to be blocked, which reduces the actual load capacity of the gas bearing and the support effect of the piston.

[0008] In summary, the existing technical schemes have defects and cannot meet the requirements of the space energy system on the long service life and high reliability of the Stirling generator. Practical new type content

[0009] The utility model provides a generator support structure and generator to solve the short life of the existing technology adopts double plate spring support to reduce the piston wear and the low efficiency and poor support effect of the defect that adopts the coupling support of gas bearing and plate spring.

[0010] The utility model provides a generator support structure, which comprises:

[0011] A cylinder body is arranged inside the power piston and has a plurality of first assembly grooves formed in the circumferential direction at both axial ends of the cylinder body;

[0012] A first magnetic member is arranged in the first assembly groove;

[0013] A shaft sleeve is arranged on the valve piston rod and inside the cylinder body, and a plurality of second assembly grooves are formed in the circumferential direction at both ends of the shaft sleeve;

[0014] A second magnetic member is arranged in the second assembly groove, and the second magnetic member and the first magnetic member can generate a magnetic force to make the valve piston rod coaxial with the cylinder body.

[0015] According to the generator support structure provided by the utility model, the polarities of the surfaces of the first magnetic member and the second magnetic member that are close to each other are the same;

[0016] When the valve piston rod is coaxial with the cylinder body, the magnetic force generated between the first magnetic member and the second magnetic member is counteracted and is in a force balance state;

[0017] When the valve piston rod deviates from the axis of the cylinder body, the magnetic force generated between the first magnetic member and the second magnetic member drives the valve piston rod to move towards the axis of the cylinder body.

[0018] The first magnetic member is magnetized on the outer side, and the second magnetic member is magnetized on the inner side.

[0019] The first magnetic members form a ring arrangement structure, the second magnetic members form a ring arrangement structure, and the positions of the second magnetic members on the ring arrangement structure correspond to the positions of the first magnetic members on the ring arrangement structure one by one.

[0020] The first magnetic member and the second magnetic member each include a magnet.

[0021] The utility model also provides a generator, include: the utility model provides a generator support structure.

[0022] The utility model provides a generator, still include:

[0023] A valve plate spring is arranged on the outer side of the cylinder body.

[0024] A valve rod is connected to one end of the valve plate spring.

[0025] A power piston is arranged on the outer side of the cylinder body.

[0026] The utility model provides a generator, still include:

[0027] A first compression ring is arranged on one end of the shaft sleeve, and the valve rod and the shaft sleeve are fastened and connected through the first compression ring by a fastener.

[0028] A second compression ring is arranged on one end of the cylinder body, and the cylinder body and the power piston are fastened and connected through the second compression ring by a fastener.

[0029] An installation groove is formed on the end of the power piston away from the second compression ring, and the cylinder body is arranged in the installation groove and abuts against the end of the installation groove.

[0030] The utility model provides a generator, still include: a valve head is arranged on the other end of the valve rod.

[0031] The utility model provides a generator, still include: a shell, a cooler, a regenerator, a heater, a shell and a linear motor arranged in the shell, and the linear motor is connected with the power piston.

[0032] The shell is internally formed with an expansion cavity near one end of the gas distribution piston head, the cooler, the regenerator and the heater are arranged near the gas distribution piston head, a compression cavity is formed between the power piston, the shell and the gas distribution piston head, and a buffer cavity is formed between the linear motor and the shell.

[0033] The utility model provides a kind of generator support structure, it includes: cylinder, first magnetic piece, shaft sleeve and second magnetic piece.Cylinder is placed in the inside of power piston, and multiple first assembly grooves are formed with in the axial both ends of cylinder along circumference;First magnetic piece is located in first assembly groove;Shaft sleeve is sleeved on gas distribution piston rod and placed in the inside of cylinder, and multiple second assembly grooves are formed with in the both ends of shaft sleeve along circumference;Second magnetic piece is located in second assembly groove, and magnetic force action between second magnetic piece and first magnetic piece can be generated, to make gas distribution piston rod and cylinder coaxial.The utility model provides a kind of generator support structure, by being provided with assembly groove in the both ends of cylinder and shaft sleeve, and using the magnetic force action between first magnetic piece and second magnetic piece, the coaxial of cylinder and shaft sleeve is guaranteed;The utility model is substantially a passive type magnetic bearing support structure, with simple structure, the advantage that support effect is good, can effectively solve the radial support problem of gas distribution piston of free piston stirling generator, avoid the wear of gas distribution piston and power piston, improve the stability and life of generator.

[0034] Further, the utility model provides a kind of generator, because it includes the generator support structure in the above-mentioned embodiment of the utility model, therefore, has same advantage as above. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical scheme in the utility model or prior art, the following will be to the drawing needed to be used in embodiment or prior art description a simple introduction, obviously, the drawing in the following description is some embodiments of the utility model, for those skilled in the art, without creative labor, can also obtain other drawings according to these drawings.

[0036] Fig. 1 It is the internal structure schematic view of the generator support structure provided in one of the embodiments of the utility model.

[0037] Fig. 2 It is the sectional view of the generator support structure provided in one of the embodiments of the utility model.

[0038] Fig. 3 It is the structure schematic view of the generator provided in one of the embodiments of the utility model.

[0039] REFERENCE NUMERALS

[0040] 1, cooler; 2, regenerator; 3, heater; 4, shell; 5, expansion cavity; 6, valve piston assembly; 6-1, valve piston head; 6-2, valve piston rod; 7, compression cavity; 8, buffer cavity; 9, linear motor; 10, power piston; 11, valve piston plate spring; 12, shaft sleeve; 13, second magnetic member; 14, cylinder; 15, first magnetic member; 16, second compression ring; 17, first compression ring. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] In the description of the present embodiments, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present embodiments and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present embodiments.

[0043] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present embodiments, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0044] In the present embodiments, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection", "fixation" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present embodiments can be understood according to the specific circumstances.

[0045] In the embodiments of the utility model, unless there is explicit provision and limitation, the first feature is "on" or "under" the second feature, which can be direct contact of the first and second features, or indirect contact of the first and second features through an intermediate medium. Moreover, the first feature can be above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature can be below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is lower than that of the second feature.

[0046] The utility model discloses a kind of generator support structures. The generator support structure includes: cylinder body 14, first magnetic piece 15, shaft sleeve 12 and second magnetic piece 13. Figs. 1-3 A kind of generator support structure is described in the utility model. The generator support structure includes: cylinder body 14, first magnetic piece 15, shaft sleeve 12 and second magnetic piece 13.

[0047] Wherein, cylinder body 14 is placed in the inside of power piston 10, and a plurality of first assembly grooves are formed in the circumferential direction at the axial two ends of cylinder body 14;First magnetic piece 15 is arranged in the first assembly groove;Shaft sleeve 12 is arranged on the valve piston rod 6-2 and is placed in the inside of cylinder body 14, and a plurality of second assembly grooves are formed in the circumferential direction at the two ends of shaft sleeve 12;Second magnetic piece 13 is arranged in the second assembly groove, and the magnetic force can be generated between second magnetic piece 13 and first magnetic piece 15 to make the valve piston rod 6-2 coaxial with cylinder body 14.

[0048] Specifically, cylinder body 14 generally adopts cylinder structure, which is placed in the inside of power piston 10 and fixed with power piston 10. Cylinder body 14 is formed with a plurality of first assembly grooves at the axial two ends, and the plurality of first assembly grooves are distributed in a ring shape. A plurality of first magnetic pieces 15 are also correspondingly arranged, and are installed in the first assembly grooves one by one. There is a gap between cylinder body 14 and shaft sleeve 12 in the axial direction, so as to adjust the coaxiality of valve piston rod 6-2 and cylinder body 14 through the magnetic force action between first magnetic piece 15 and second magnetic piece 13.

[0049] Valve piston assembly 6 includes valve piston rod 6-2 and valve piston head 6-1, one end of valve piston rod 6-2 is connected with valve piston plate spring 11, and the other end is connected with valve piston head 6-1. Shaft sleeve 12 is integrally sleeved on the outside of valve piston rod 6-2 and fixed with valve piston rod 6-2. A plurality of second assembly grooves are formed at the axial two ends of shaft sleeve 12, and the plurality of second assembly grooves are distributed in a ring shape and one-to-one correspond to the positions of the first assembly grooves. A plurality of second magnetic pieces 13 are also correspondingly arranged, and are installed in the second assembly grooves one by one. The magnetic force action of magnetic attraction or magnetic repulsion is generated between second magnetic piece 13 and first magnetic piece 15, so as to ensure the coaxiality of valve piston rod 6-2 and cylinder body 14.

[0050] It can be understood that when the valve piston rod 6-2 is coaxial with the cylinder body 14, the first magnetic member 15 and the second magnetic member 13 are also coaxial, and the two are in a force balance state, and the interaction force between the two is cancelled out, so that the valve piston rod 6-2 and the cylinder body 14 remain coaxial. If the valve 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 valve piston rod 6-2 to move towards the axis direction of the cylinder body 14, and ultimately achieving the coaxial of the valve piston rod 6-2 and the cylinder body 14, thereby avoiding wear.

[0051] In addition, the cylinder body 14 and the shaft sleeve 12 are both provided with the assembly groove structure, and the magnetic members are filled in the corresponding assembly grooves, so that the two ends of the cylinder body 14 and the shaft sleeve 12 can guarantee coaxial, and it is a bearing double support structure, which guarantees that the cylinder body 14 and the shaft sleeve 12 are coaxially arranged as a whole through the two-point-one-line principle.

[0052] The above-mentioned generator support structure is particularly suitable for a free piston Stirling generator.

[0053] The generator support structure provided by the utility model, through setting the assembly grooves at the two ends of the cylinder body 14 and the shaft sleeve 12 and utilizing the magnetic force action between the first magnetic member 15 and the second magnetic member 13, guarantees the coaxial of the cylinder body 14 and the shaft sleeve 12, and the utility model is essentially a passive magnetic bearing support structure, has the advantages of simple structure and good support effect, can effectively solve the radial support problem of the valve piston of the free piston Stirling generator, avoids the wear of the valve piston and the power piston 10, and improves the stability and service life of the generator.

[0054] In one of the embodiments of the utility model, the polarity of the mutually close surfaces of the first magnetic member 15 and the second magnetic member 13 is same. And when the valve piston rod 6-2 is coaxial with the cylinder body 14, the magnetic force generated between the first magnetic member 15 and the second magnetic member 13 is counteracted and is in a force balance state; when the valve piston rod 6-2 deviates from the axis of the cylinder body 14, the magnetic force is generated between the first magnetic member 15 and the second magnetic member 13 and drives the valve piston rod 6-2 to move towards the axis direction of the cylinder body 14. In the embodiment, due to the nested structure of the shaft sleeve 12 and the cylinder body 14, the first assembly groove and the second assembly groove are also nested structures, therefore, the plurality of first magnetic members 15 and the plurality of second magnetic members 13 also correspondingly form a ring-shaped nested structure. When the valve piston rod 6-2 is coaxial with the cylinder body 14, the repulsion force formed between the first magnetic member 15 and the second magnetic member 13 is counteracted and there is no force between the shaft sleeve 12 and the cylinder body 14; when the valve piston rod 6-2 deviates from the axis of the cylinder body 14, the interval between the first magnetic member 15 and the second magnetic member 13 on one side is reduced and the interval on the other side is increased, and the repulsion force generated on the side with smaller interval is larger, which drives the shaft sleeve 12 to move radially towards the axis direction of the cylinder body 14, the shaft sleeve 12 is reset and finally the shaft sleeve 12 is coaxial with the cylinder body 14.

[0055] In one of the embodiments of the utility model, the first magnetic member 15 is magnetized on the outside and the second magnetic member 13 is magnetized on the inside. In the 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 of the mutually close surfaces of the first magnetic member 15 and the second magnetic member 13 is same, thereby the repulsion force is generated between the first magnetic member 15 and the second magnetic member 13. And when the first magnetic member 15 and the second magnetic member 13 are close to each other, the repulsion force increases, on the contrary, when they are far away from each other, the repulsion force decreases; therefore, in the ring-shaped structure formed by the plurality of first magnetic members 15 and the plurality of second magnetic members 13, the radial balance of the shaft sleeve 12 can be maintained and the shaft sleeve 12 is guaranteed to be coaxial with the cylinder body 14.

[0056] In one of the embodiments of the utility model, multiple first magnetic members 15 form a ring arrangement structure, multiple second magnetic members 13 form a ring arrangement structure, and the positions of the second magnetic members 13 on the ring arrangement structure correspond to the positions of the first magnetic members 15 on the ring arrangement structure one by one. In this embodiment, multiple first magnetic members 15 are arranged along the circumference to form a ring structure, multiple second magnetic members 13 are arranged along the circumference to form a ring structure, and the positions of each first magnetic member 15 and each second magnetic member 13 on the corresponding ring structure correspond to each other, that is, the angle of each first magnetic member 15 in the ring structure is the same as the angle of the corresponding second magnetic member 13 in the ring structure, so 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 first assembly groove and the second assembly groove are provided in the same number, and the first magnetic member 15 and the second magnetic member 13 are provided in the same number; 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.

[0057] In one of the embodiments of the utility model, the first magnetic member 15 and the second magnetic member 13 both comprise a magnet. Specifically, the first magnetic member 15 and the second magnetic member 13 are both permanent magnets, preferably ferrite magnets, aluminum-nickel-cobalt magnets, samarium-cobalt magnets or neodymium-iron-boron magnets, etc., which can be selected according to the use environment of the generator.

[0058] As shown in Fig. 3 The utility model also provides a generator. The generator comprises the generator support structure in the above-mentioned embodiments of the utility model.

[0059] Specifically, the generator provided by the utility model is a free-piston Stirling generator, which adopts the generator support structure in the above-mentioned embodiments of the utility model and adopts passive magnetic bearing support technology, so that the radial support problem of the gas distribution piston of the free-piston Stirling generator can be effectively solved, the wear of the gas distribution piston and the power piston 10 is avoided, and the stability and service life of the generator are improved.

[0060] The generator provided by the utility model comprises the generator support structure in the above-mentioned embodiments of the utility model, so it has the same advantages as above.

[0061] In one of the embodiments of the utility model, the generator further comprises a gas distribution piston plate 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 with the gas distribution piston plate spring 11; and the power piston 10 is arranged outside the cylinder body 14.

[0062] In one of the embodiments of the utility model, the generator further comprises: a valve piston head 6-1 arranged at the other end of the valve piston rod 6-2. Specifically, the valve piston head 6-1 and the valve piston rod 6-2 form a valve piston assembly 6. One end of the valve piston rod 6-2 is connected with the valve piston plate spring 11, and the other end is connected with the valve piston head 6-1.

[0063] In one of the embodiments of the utility model, the generator further comprises: a first compression ring 17 and a second compression ring 16. The first compression ring 17 is arranged at one end of the shaft sleeve 12 and fastens the valve piston rod 6-2 and the shaft sleeve 12 by the first compression ring 17 and fasteners; the second compression ring 16 is arranged at one end of the cylinder body 14 and fastens the cylinder body 14 and the power piston 10 by the second compression ring 16 and fasteners. One end of the power piston 10 away from the second compression ring 16 is formed with a mounting groove, and the cylinder body 14 is arranged in the mounting groove and abuts against the end of the mounting groove. Specifically, the fastening connection of the valve piston rod 6-2 and the shaft sleeve 12 is realized by the first compression ring 17 and the fasteners, and the fastening connection of the cylinder body 14 and the power piston 10 is realized by the second compression ring 16 and the fasteners. Moreover, the mounting groove is formed at one end of the power piston 10 away from the second compression ring 16. In the cylinder body 14 assembly process, the cylinder body 14 is first pushed to the mounting groove and in place, and then the cylinder body 14 and the power piston 10 are fastened by the second compression ring 16.

[0064] In one of the embodiments of the utility model, the generator further comprises: a shell 4, a cooler 1, a regenerator 2, a heater 3, the shell 4 and a linear motor 9 arranged inside the shell 4, and the linear motor 9 is connected with the power piston 10. One end of the shell 4 close to the valve piston head 6-1 is formed with an expansion cavity 5, the cooler 1, the regenerator 2 and the heater 3 are arranged close to the valve piston head 6-1, a compression cavity 7 is formed between the power piston 10, the shell 4 and the valve piston head 6-1, and a buffer cavity 8 is formed between the linear motor 9 and the shell 4.

[0065] In summary, the structure in the above-mentioned embodiments provides a free piston Stirling generator, which has a passive permanent magnet bearing support structure, adopts passive magnetic bearing support technology, can effectively solve the radial support problem of the valve piston of the free piston Stirling generator, avoids the wear of the valve piston and the power piston 10, and improves the stability and service life of the generator. When the generator operates, the shaft sleeve 12 and the second magnetic part 13 reciprocate with the valve piston assembly 6, and the cylinder body 14 and the first magnetic part 15 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 needs to meet that the second magnetic part 13 does not exceed the corresponding range of the first magnetic part 15 within the stroke of the two pistons (i.e. the valve piston and the power piston 10).

[0066] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place or can be distributed to multiple units. Part or all of the modules can be selected to achieve the purpose of the embodiment scheme according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0067] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions 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 solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A generator support structure, characterized by, The application relates to a cylinder (14) arranged inside a power piston (10), a plurality of first assembly grooves are formed in the cylinder (14) in the circumferential direction at the axial two ends of the cylinder (14); a first magnetic member (15) is arranged in the first assembly groove; a shaft sleeve (12) is sleeved on a valve piston rod (6-2) and arranged inside the cylinder (14), a plurality of second assembly grooves are formed in the shaft sleeve (12) in the circumferential direction at the two ends of the shaft sleeve (12); a second magnetic member (13) is arranged in the second assembly groove, and the second magnetic member (13) and the first magnetic member (15) can generate a magnetic force to make the valve piston rod (6-2) coaxial with the cylinder (14). 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. When the valve piston rod (6-2) is coaxial with the cylinder (14), the magnetic force generated between the first magnetic member (15) and the second magnetic member (13) is counteracted and is in a force balance state. When the valve piston rod (6-2) deviates from the axis of the cylinder (14), the magnetic force generated between the first magnetic member (15) and the second magnetic member (13) drives the valve piston rod (6-2) to move towards the axis of the cylinder (14). 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).

2. The generator support structure of claim 1, wherein, The first magnetic members (15) are arranged in a ring shape, the second magnetic members (13) are arranged in a ring shape, and the positions of the second magnetic members (13) in the ring shape correspond to the positions of the first magnetic members (15) in the ring shape. The first magnetic member (15) and the second magnetic member (13) both comprise a magnet. The application further relates to a generator support structure.

3. The generator support structure of claim 2, wherein, The application further relates to a valve piston plate spring (11), a valve piston rod (6-2) connected to the valve piston plate spring (11) at one end, and a power piston (10) arranged outside the cylinder (14).

4. The generator support structure of claim 1, wherein, The application further relates to a first compression ring (17) arranged at one end of the shaft sleeve (12) and used to fasten the valve piston rod (6-2) and the shaft sleeve (12) through the first compression ring (17) by means of a fastener; a second compression ring (16) arranged at one end of the cylinder (14) and used to fasten the cylinder (14) and the power piston (10) through the second compression ring (16) by means of a fastener; and an installation groove formed at one end of the power piston (10) away from the second compression ring (16), the cylinder (14) is arranged in the installation groove and abuts against the end of the installation groove at the other end.

5. The generator support structure of any one of claims 1 to 4, wherein, The application further relates to a valve piston head (6-1) arranged at the other end of the valve piston rod (6-2).

6. An electric generator characterized by The application further relates to a shell (4), a cooler (1), a regenerator (2), a heater (3), the shell (4) and a linear motor (9) arranged inside the shell (4), and the linear motor (9) is connected to the power piston (10). ​ 7. The electric generator of claim 6, wherein, ​ ​ ​ ​ 8. The electric generator of claim 7, wherein, ​ ​ ​ ​ 9. The electric generator of claim 7, wherein, ​ ​ 10. The electric generator of claim 9, wherein, ​ ​ The expansion cavity (5) is formed in the shell (4) near one end of the gas distribution piston head (6-1), the cooler (1), the regenerator (2) and the heater (3) are arranged near the gas distribution piston head (6-1), the compression cavity (7) is formed between the power piston (10), the shell (4) and the gas distribution piston head (6-1), and the buffer cavity (8) is formed between the linear motor (9) and the shell (4).

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