Device for converting nuclear energy into mechanical energy

Abstract

The nuclear energy-to-mechanical energy conversion device is characterized in that a cavity is formed in an outer shell and filled with a working medium, a rotating shaft vertically penetrates through the outer shell and is rotationally connected with the outer shell, a plurality of hollow pipe bodies are horizontally arranged in a circulating inner cavity of the outer shell, and the inlet ends of the hollow pipe bodies all extend to be connected with the outer wall of the rotating shaft; the outlet ends of the hollow pipe bodies face the inner wall of the outer shell and keep the same inclined included angle, turbines are coaxially and rotationally installed in circulating inner cavities of the hollow pipe bodies, and nuclear fuel ring layers are embedded in the pipe walls of the hollow pipe bodies. According to the device for converting the nuclear energy into the mechanical energy, coupling design is carried out through the process of obtaining heat energy through nuclear reaction and the process of converting the heat energy into the mechanical energy, large-scale, simple and efficient conversion from the nuclear energy to the mechanical energy is achieved on the basis that a working medium is adopted to absorb the nuclear energy for cyclic acting, and a large-scale and multipurpose nuclear energy application scene can be supported.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear energy conversion, and in particular relates to a device for converting nuclear energy into mechanical energy. Background Art

[0002] Since the discovery of nuclear fission and nuclear decay, humans have been continuously researching and improving the efficiency of nuclear energy utilization. After more than half a century of experience accumulation, humans have formed a development status quo of using nuclear reactors as the main source of nuclear energy in large-scale production activities using nuclear fission and nuclear decay energy.

[0003] For the nuclear reactors currently under construction and operation, as well as the nuclear reactors in the research and development stage that can be expected in the near to medium term, in various land-based, sea-based, and air-based scenarios, the nuclear reactors and external containment facilities are all in a static state, and different heat transfer media are used inside the nuclear reactor to transfer the heat of nuclear fission and nuclear decay to the outside of the nuclear reactor. The outside of the nuclear reactor is equipped with huge supporting facilities such as heat transfer and exchange, thermal energy to mechanical energy conversion, and mechanical energy to electrical energy conversion. The huge facilities and fixed installation methods greatly limit the use scenarios and energy utilization efficiency of nuclear energy. Summary of the invention

[0004] In view of the above problems, the present invention proposes a device for converting nuclear energy into mechanical energy, comprising: an outer shell, a rotating shaft, a hollow tube, and a turbine;

[0005] The outer shell has a cavity filled with a working medium, the rotating shaft vertically penetrates the outer shell and forms a rotational connection with the outer shell, a plurality of hollow tubes are horizontally arranged in the circulation cavity of the outer shell, the inlet ends of the hollow tubes are extended to connect with the outer wall of the rotating shaft, and the outlet ends of the hollow tubes are all facing the inner wall of the outer shell and maintain the same inclination angle;

[0006] A turbine is coaxially installed in the inner cavity of the hollow tube circulation, and a nuclear fuel layer is nested in the wall of the hollow tube. The nuclear fuel layer is used to heat the working medium in the inner cavity of the hollow tube circulation, so that the working medium expands to drive the turbine to rotate, and drives the working medium to be ejected from the inlet end of the hot hollow tube to the outlet end to drive the rotating shaft to rotate.

[0007] Furthermore, the conversion device also includes an inner shell, which is embedded in the cavity of the outer shell to form a circulating inner cavity and a circulating outer cavity. The inner shell is coaxially sleeved on the outside of the rotating shaft, and a plurality of outlets are opened on the side wall of the inner shell to form a sleeve with the outlet end of the hollow tube body, and inlets connecting the circulating inner cavity and the circulating outer cavity are opened at the upper and lower ends of the inner shell.

[0008] Furthermore, the hollow tube body includes a first pipe for communicating with the inner circulation cavity, a second pipe for communicating with the outer circulation cavity, and a guide wing;

[0009] The inlet end of the first pipe is connected to the outer wall of the rotating shaft through a connecting rod, and the pipe opening of the second pipe is equipped with a guide wing, and the guide wing maintains a predetermined inclined angle with the inner wall of the outer shell.

[0010] Furthermore, the length of the first pipeline is smaller than that of the second pipeline, and the inner walls of the first pipeline and the second pipeline both adopt an outward expansion structure, and the circulating inner cavity of the second pipeline is coaxially mounted with a turbine.

[0011] Furthermore, a compressor is coaxially installed in the first pipeline, and the compressor is transmission-connected to the turbine to obtain driving force.

[0012] Furthermore, the outer shell includes a straight tube portion and a dome portion connected to both ends of the straight tube portion, and the outlet ends of the plurality of hollow tubes are all facing the inner wall of the straight tube portion of the outer shell.

[0013] Furthermore, the plurality of hollow tubes are divided into a plurality of drive layers in the vertical direction, the drive layer comprises a plurality of drive components arranged in a circular array about the rotating shaft, and the drive component comprises a plurality of hollow tubes arranged in parallel.

[0014] Furthermore, the upper and lower ends of the rotating shaft are sleeved with sealing support blocks, and the sealing support blocks abut against the outer wall of the port through which the rotating shaft passes through the outer shell.

[0015] Furthermore, the upper and lower ends of the rotating shaft are both drivingly connected to the mechanical transmission assembly.

[0016] Furthermore, the outer shell is made of lead material.

[0017] Compared with the prior art, the embodiments of the present invention have at least the following advantages:

[0018] The nuclear energy to mechanical energy conversion device of the present invention obtains heat energy through nuclear reaction and is coupled with the heat energy to mechanical energy conversion process to realize energy transfer from nuclear fission and nuclear decay to the working fluid, working fluid discharge drives the rotating shaft to rotate to form mechanical energy, and the mechanical energy is transferred to the outside of the outer shell through the shaft body and converted into energy forms such as electrical energy. On the basis of using the working fluid to absorb nuclear energy for cyclic work, large-scale, simple and efficient nuclear energy to mechanical energy conversion is realized, and the acquisition of microscopic nuclear reaction energy and macroscopic mechanical energy is taken as an overall design to directly output usable energy, without relying on the huge energy conversion supporting facilities such as heat exchange and heat transfer, heat energy to mechanical energy conversion, and mechanical energy to electrical energy required for traditional large-scale nuclear energy applications. Its principle and design can support large-scale, multi-purpose nuclear energy application scenarios.

[0019] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in 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 A schematic side cross-sectional view of a device for converting nuclear energy into mechanical energy in an embodiment of the present invention is shown;

[0022] Figure 2 An enlarged schematic diagram of structure A in an embodiment of the present invention is shown;

[0023] Figure 3 A schematic top view of a cross-sectional view of a device for converting nuclear energy into mechanical energy according to an embodiment of the present invention is shown. Figure 1 ;

[0024] Figure 4 A schematic top view of a cross-sectional view of a device for converting nuclear energy into mechanical energy according to an embodiment of the present invention is shown. Figure 2 .

[0025] In the figure, 1-outer shell, 2-inner shell, 3-rotating shaft, 4-hollow tube, 5-turbine, 6-nuclear fuel ring, 7-circulation inner cavity, 8-circulation outer cavity, 9-first pipeline, 10-second pipeline, 11-guide wing, 12-compressor, 13-sealing support block, 14-mechanical transmission component, 15-connecting rod. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments 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.

[0027] The present invention provides a device for converting nuclear energy into mechanical energy. Figure 1 A schematic side cross-sectional view of a device for converting nuclear energy into mechanical energy in an embodiment of the present invention is shown. Figure 1 In the invention, the device for converting nuclear energy into mechanical energy comprises: an outer shell 1, a rotating shaft 3, a hollow tube 4, and a turbine 5;

[0028] The outer shell 1 has a cavity inside and is filled with a working medium. The rotating shaft 3 vertically penetrates the outer shell 1 and forms a rotational connection with the outer shell 1. A plurality of hollow tubes 4 are horizontally arranged in the circulation inner cavity 7 of the outer shell 1. The inlet ends of the hollow tubes 4 are all extended to be connected with the outer wall of the rotating shaft 3, and the outlet ends of the hollow tubes 4 are all facing the inner wall of the outer shell 1 and maintaining the same inclined angle.

[0029] A turbine 5 is coaxially mounted in the circulating inner cavity 7 of the hollow tube body 4, and a nuclear fuel ring layer 6 is nested in the tube wall of the hollow tube body 4. The nuclear fuel ring layer 6 is used to heat the working medium in the circulating inner cavity 7 of the hollow tube body 4, so that the working medium expands to drive the turbine 5 to rotate, and drives the working medium to be ejected from the inlet end to the outlet end of the hot hollow tube body 4 to drive the rotating shaft 3 to rotate.

[0030] During the actual use of the conversion device of the present application, the outer shell 1 is in a stationary state relative to the external nuclear facility, and is a pressure-bearing and heat-insulating boundary of the nuclear energy to mechanical energy conversion environment, and is a radioactive protection barrier; the outer shell 1 is filled with compressible working fluid, and when the nuclear fuel ring layer 6 is used for long-term heat supply, the working fluid in the circulating inner cavity 7 of the hollow tube body 4 is heated, so that the working fluid in the circulating inner cavity 7 of the hollow tube body 4 expands in volume during the heating process, thereby driving the working fluid to flow, and the working fluid flow direction is limited by the turbine 5, and the flow rate of the working fluid is accelerated at the same time. The working fluid enters from the inlet end of the hollow tube body 4 and is ejected from the outlet end of the hollow tube body 4, forming a complete working fluid circulation flow path; at the same time, on the basis of maintaining the same inclination angle between the outlet end of the hollow tube body 4 and the inner wall of the outer shell 1, the working fluid ejected from the outlet end will provide the hollow tube body 4 and the rotating shaft 3 with a torque in the opposite direction to the outlet end of the hollow tube body 4, thereby driving the rotating shaft 3 to rotate around the axis of the rotating shaft 3 as the center, thereby realizing the conversion of nuclear energy into mechanical energy.

[0031] The conversion device proposed in the present application is designed to couple the process of obtaining heat energy through nuclear reactions with the conversion process of heat energy into mechanical energy, so as to realize the energy transfer from nuclear fission and nuclear decay to the working fluid, the working fluid discharge drives the rotating shaft 3 to rotate to form mechanical energy, and the mechanical energy is transferred to the outside of the outer shell 1 through the rotating shaft 3 to be converted into electrical energy and other energy forms. On the basis of using the working fluid to absorb nuclear energy for cyclic work, large-scale, simple and efficient conversion of nuclear energy into mechanical energy is realized. Its principle and design can support large-scale, multi-purpose nuclear energy application scenarios, including land-based, sea-based, air-based, and deep space exploration and other scenarios, enriching the utilization scenarios.

[0032] This device rationally integrates microscopic nuclear reaction energy and macroscopic mechanical energy to achieve direct output of usable mechanical energy. It does not rely on the huge energy conversion supporting facilities such as heat exchange and heat transfer, thermal energy to mechanical energy conversion, and mechanical energy to electrical energy required for traditional large-scale nuclear energy applications, providing a flexible option for nuclear energy application scenarios.

[0033] refer to Figure 1The conversion device also includes an inner shell 2, which is built into the cavity of the outer shell 1, dividing the original single internal cavity of the outer shell 1 into a circulating inner cavity 7 and a circulating outer cavity 8 distributed inside and outside. The inner shell 2 is coaxially sleeved on the outside of the rotating shaft 3, and a plurality of outlets are provided on the side wall of the inner shell 2 to form a sleeve with the outlet end of the hollow tube 4, so that the inner shell 2, the rotating shaft 3, and the plurality of hollow tubes 4 form a whole. When the rotating shaft 3 and the plurality of hollow tubes 4 rotate synchronously, the inner shell 2 will be driven to rotate synchronously.

[0034] exist Figure 1 In the example shown, inlets connecting the circulating inner cavity 7 and the circulating outer cavity 8 are provided at the upper and lower ends of the inner shell 2, so that the working fluid enters the circulating inner cavity 7 from the upper and lower ends of the inner shell 2, and the working fluid in the circulating inner cavity 7 flows to the circulating outer cavity 8 through the hollow tube body 4, thereby forming a complete working fluid circulation path; by dividing the circulating inner cavity 7 and the circulating outer cavity 8, the working fluid flow direction is limited and the smoothness and stability of the working fluid flow are improved. The arrow in the figure indicates the flow direction of the working fluid.

[0035] Specifically, the hollow tube body 4 includes a first pipe 9 for connecting to the inner circulation cavity 7, a second pipe 10 for connecting to the outer circulation cavity 8, and a guide wing 11;

[0036] The inlet end of the first pipe 9 is connected to the outer wall of the rotating shaft 3 through a connecting rod 15, so that the inlet end of the first pipe 9 maintains a predetermined distance from the rotating shaft 3, providing a buffer space for the working fluid to enter from the inlet end of the first pipe 9. At the same time, the length of the connecting rod 15 determines the size of the distance between the inlet end of the first pipe 9 and the rotating shaft 3, and determines the size of the buffer space for buffering the working fluid at the inlet end of each first pipe 9;

[0037] Correspondingly, in Figure 1 In the example shown, guide wings 11 are connected to the pipe mouths of the second pipes 10, and the guide wings 11 limit the flow direction of the working fluid flowing out of the second pipe 10, and several guide wings 11 maintain the same inclination angle, so that the working fluid ejection angles of several hollow tube bodies 4 remain consistent, thereby ensuring that the force directions of the working fluid ejected from the several hollow tube bodies 4 remain consistent.

[0038] exist Figure 2In the example shown, the left side is a first pipe 9 connected to the circulation inner cavity 7, and the right side is a second pipe 10 connected to the circulation outer cavity 8. The tube walls of the first pipe 9 and the second pipe 10 are both embedded with the nuclear fuel ring layer 6. The length of the first pipe 9 is less than the length of the second pipe 10. The turbine 5 is coaxially installed in the circulation inner cavity 7 of the second pipe 10. For example, the length of the first pipe 9 is half the length of the second pipe 10. The working fluid is preheated initially through the shorter first pipe 9, and then the working fluid is heated in the longer second pipe 10, thereby reducing the temperature difference between the two sides of the turbine 5, protecting the turbine 5, and improving the service life of the turbine 5.

[0039] The inner walls of the first pipeline 9 and the second pipeline 10 both adopt an outward expansion structure, that is, the inner wall diameter at the connection between the first pipeline 9 and the second pipeline 10 is the smallest. The narrow pipe effect is achieved by first changing the diameter from large to small and then from small to large, thereby increasing the flow rate of the working medium entering the second pipeline 10.

[0040] Specifically, a compressor 12 is coaxially installed in the first pipeline 9, and a transmission connection is established between the turbine 5 and the compressor 12, so that when the turbine 5 rotates under the action of the expansion of the working fluid, the compressor 12 is synchronously driven to compress the volume of the working fluid entering from the inlet end of the first pipeline 9, thereby increasing the volume of the working fluid entering the first pipeline 9, and also synchronously increasing the volume of the working fluid entering the second pipeline 10 from the first pipeline 9. At the same time, under the action of the compressor 12, the working fluid is compressed in advance, so that the volume difference increased during the expansion process of the compressed working fluid in the second pipeline 10 is further increased, further increasing the rotation speed of the turbine 5 and the ejection force of the working fluid at the outlet end of the second pipeline 10, and the turbine 5 and the compressor 12 driven by the turbine 5 further drive the working fluid, thereby forming a positive cycle, so that the operating efficiency of the turbine 5 and the compressor 12 and the ejection force of the working fluid from the hollow tube body 4 are continuously superimposed.

[0041] It should be noted that, in this embodiment, there is no restriction on the specifications of the turbine 5 and the compressor 12. In actual use, turbines 5 and compressors 12 of different specifications can be used in combination according to needs to improve the working capacity of the working fluid pressurization, expansion and spraying, so as to adapt to different energy demand scenarios and improve the efficiency of supercharging and energy transfer.

[0042] Specifically, the outer shell 1 includes a straight cylinder portion and a dome portion connected to both ends of the straight cylinder portion. Correspondingly, a predetermined spacing is retained between each portion of the outer wall of the inner shell 2 and each portion of the inner wall of the outer shell 1. The overall structure of the inner shell 2 is similar to that of the outer shell 1. The inner shell 2 also includes a straight cylinder portion and a dome portion connected to both ends of the straight cylinder portion. An outlet is opened on the side wall of the straight cylinder portion of the inner shell 2, and a hollow tube body 4 is installed in the outlet so that the outlet ends of several hollow tube bodies 4 are all facing the inner wall of the straight cylinder portion of the outer shell 1, which is convenient for unifying the spacing between the outlet ends of the hollow tube bodies 4 and the inner wall of the outer shell 1, and is convenient for uniformly limiting the reverse thrust generated by each hollow tube body 4 after the working medium is ejected on the basis of maintaining the same inclination angle at the outlet ends of the hollow tube bodies 4.

[0043] Specifically, the plurality of hollow tubes 4 are divided into a plurality of driving layers in the vertical direction. The driving layer includes a plurality of driving components arranged in a circular array about the rotating shaft 3 . The driving components include a plurality of hollow tubes 4 arranged in parallel.

[0044] exist Figure 1 In the example shown, corresponding to the height of the straight tube part of the outer shell 1, a plurality of hollow tube bodies 4 are divided into four driving layers in the vertical direction, and a reasonable contrast is formed with the inner wall of the straight tube part of the outer shell 1 by setting up four driving layers; each driving layer is composed of four driving components arranged in a circular array, and each driving component is formed by two hollow tube bodies 4 arranged in parallel, so as to realize the injection operation from four directions, and on the basis of the double hollow tube bodies 4, ensure the injection force of the working fluid in each direction.

[0045] refer to Figure 3 and Figure 4 , based on the 90-degree angle between adjacent drive components, there are many arrangements, including Figure 3 In the example shown, the orientation of several drive components is vertical to the inner wall of the outer shell 1, including Figure 4 In the example shown, the directions of the plurality of drive components form an angle of 45° with the inner wall of the outer shell 1. Of course, in actual use, the angles between the directions of the plurality of drive components and the inner wall of the outer shell 1 can be adjusted according to actual needs.

[0046] Although the arrangement of several hollow tubes 4 is exemplified above, the present invention is not limited thereto, and the angle between the orientation of the drive assembly and the inner wall of the outer shell 1 and the number of hollow tubes 4 can be arranged in a variety of ways. Each drive layer can also be composed of 3, 5, 8, etc. drive assemblies, and similarly each drive assembly can also be composed of 3, 4, 5, etc. hollow tubes 4. Those skilled in the art can comprehensively consider the connection principle of the present invention and the actual application situation, as long as the principle of the present invention can be realized.

[0047] Specifically, the upper and lower ends of the rotating shaft 3 are both sleeved with sealing support blocks 13, which abut against the outer wall of the port through which the rotating shaft 3 passes through the outer shell 1. The sealing support block 13 blocks the outer wall of the port through which the rotating shaft 3 passes through the outer shell 1, thereby preventing the working fluid inside the outer shell 1 from leaking out.

[0048] In addition, in the specific use of the conversion device of the present application, the rotating shaft 3 as the mechanical energy output component can be directly connected to the mechanical transmission component 14 at the upper and lower ends of the rotating shaft 3, such as using excitation power generation or speed change mechanism to directly output electrical energy, mechanical energy or other forms of energy to the outside.

[0049] Meanwhile, the outer shell 1 is made of lead material. It should be noted that the outer shell 1 may also be made of other nuclear radiation resistant materials, including concrete, metal fiber, etc., to facilitate the flexible movement and use of the device.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of multiple components or the interaction relationship of multiple components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] 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 substitutions for some of the technical features therein; and these modifications or substitutions 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 invention.

Claims

1. A device for converting nuclear energy into mechanical energy, characterized in that: include: An outer shell (1), a rotating shaft (3), a hollow tube (4), and a turbine (5); The outer shell (1) has a cavity inside and is filled with a working medium. The rotating shaft (3) vertically penetrates the outer shell (1) and is rotatably connected to the outer shell (1). A plurality of hollow tubes (4) are horizontally arranged in the circulation inner cavity (7) of the outer shell (1). The inlet ends of the hollow tubes (4) are all extended to be connected to the outer wall of the rotating shaft (3), and the outlet ends of the hollow tubes (4) are all facing the inner wall of the outer shell (1) and maintain the same inclined angle. The circulating inner cavity (7) of the hollow tube (4) is coaxially rotatably mounted with a turbine (5), and a nuclear fuel ring layer (6) is nested in the tube wall of the hollow tube (4). The nuclear fuel ring layer (6) is used to heat the working medium in the circulating inner cavity (7) of the hollow tube (4), so that the working medium expands to drive the turbine (5) to rotate, thereby driving the working medium to be ejected from the inlet end to the outlet end of the hot hollow tube (4) to drive the rotating shaft (3) to rotate.

2. The device for converting nuclear energy into mechanical energy according to claim 1, characterized in that: The conversion device further comprises an inner shell (2), the inner shell (2) being built into the cavity of the outer shell (1) to form a circulation inner cavity (7) and a circulation outer cavity (8), the inner shell (2) being coaxially sleeved on the outer side of the rotating shaft (3), a plurality of outlets being sleeved with the outlet end of the hollow tube (4) being provided on the side wall of the inner shell (2), and inlets being connected to the circulation inner cavity (7) and the circulation outer cavity (8) being provided at the upper and lower ends of the inner shell (2).

3. The device for converting nuclear energy into mechanical energy according to claim 2, characterized in that: The hollow tube body (4) comprises a first pipe (9) for communicating with the inner circulation cavity (7), a second pipe (10) for communicating with the outer circulation cavity (8), and a guide wing (11); The inlet end of the first pipe (9) is connected to the outer wall of the rotating shaft (3) via a connecting rod (15), and a guide wing (11) is installed at the pipe mouth of the second pipe (10), and the guide wing (11) maintains a predetermined inclined angle with the inner wall of the outer shell (1).

4. The device for converting nuclear energy into mechanical energy according to claim 3, characterized in that: The length of the first pipeline (9) is shorter than that of the second pipeline (10), and the inner walls of the first pipeline (9) and the second pipeline (10) both adopt an outward expansion structure, and the circulating inner cavity (7) of the second pipeline (10) is coaxially rotatably mounted with the turbine (5).

5. The device for converting nuclear energy into mechanical energy according to claim 3, characterized in that: A compressor (12) is coaxially mounted in the first pipe (9) for rotation, and the compressor (12) is drivingly connected to the turbine (5) to obtain driving force.

6. The device for converting nuclear energy into mechanical energy according to claim 1, characterized in that: The outer shell (1) comprises a straight cylindrical portion and a dome portion connected to both ends of the straight cylindrical portion, and the outlet ends of the plurality of hollow tubes (4) are all facing the inner wall of the straight cylindrical portion of the outer shell (1).

7. The device for converting nuclear energy into mechanical energy according to claim 6, characterized in that: The plurality of hollow tubes (4) are divided into a plurality of drive layers in the vertical direction. The drive layer comprises a plurality of drive components arranged in a circular array about the rotating shaft (3). The drive component comprises a plurality of hollow tubes (4) arranged in parallel.

8. The device for converting nuclear energy into mechanical energy according to claim 1, characterized in that: The upper and lower ends of the rotating shaft (3) are sleeved with sealing support blocks (13), and the sealing support blocks (13) abut against the outer wall of the port through which the rotating shaft (3) passes through the outer shell (1).

9. The device for converting nuclear energy into mechanical energy according to claim 8, characterized in that: The upper and lower ends of the rotating shaft (3) are both drivingly connected to a mechanical transmission assembly (14).

10. The device for converting nuclear energy into mechanical energy according to any one of claims 1 to 9, characterized in that: The outer shell (1) is made of lead material.

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