Modularized heat source simulation device

Abstract

The application provides a modular simulation heat source device, comprising: a housing, the housing comprises a housing body and a housing cover plate, the housing body is provided with a plurality of storage cavities, and the housing cover plate is arranged on the housing body and is used for sealing the storage cavities; the protection assembly is arranged in the storage cavity; the core body is arranged in the protection assembly; the device has the beneficial effects that the structure of the device is basically consistent with a real plutonium-238 heat source, the surface temperature field and the heat flow path of the core body are basically consistent with a real isotope heat source, the device replaces the isotope heat source to test and verify the performance and parameters of key devices and parts of a system and test the output electrical performance of the system, the earlier research cost can be greatly reduced, and the test efficiency is improved. The research progress is accelerated.

Description

Technical Field

[0001] The present application belongs to the technical field of nuclear power equipment, and specifically relates to a modular simulated heat source device. Background Art

[0002] The radioactive thermophotovoltaic (RTPV) system has outstanding technical advantages such as high energy conversion rate, long life, strong anti-interference, wide power range, no moving parts, small size and light weight, and multi-task adaptation. It is one of the best solutions for the power supply system required in the field of deep space exploration and ocean exploration. The radioactive isotope heat source is designed as a modular structure, which is composed of multiple modules stacked together. In the process of developing the prototype of the radioactive thermophotovoltaic system, it is difficult to use the real heat source for research and testing due to the limitations of the radioactive heat source isotope material. Therefore, it is necessary to use an electric heating simulated heat source instead of a real heat source to carry out research work.

[0003] Patent document CN113677046A discloses an electric heating simulation heat source module and system, such as Figure 1 The electric heating simulation heat source module includes a heating component and a conductive component; the heating component includes a heat transfer housing and at least two heating units, both of which are spiral silicon carbide rods, and the two heating units are arranged side by side and at intervals in the heat transfer housing; the conductive component includes a power supply lead and a plurality of conductive screws; both ends of each heating unit are connected with conductive screws, the power supply lead is electrically connected to the conductive screws at both ends of each heating unit, and the power supply lead is used to be electrically connected to an external power source.

[0004] This type of simulated heat source has the following problems. First, most simulated heat sources are designed for temperature difference nuclear batteries, which adapt to the temperature range of 200℃ ~ 700℃. The temperature range of thermophotovoltaic nuclear battery heat sources is 1100℃ ~ 1400℃, so their structure and materials are difficult to adapt to high temperature areas. Second, the electrical connection screws, connecting plates and other structures designed inside the simulated heat source are quite different from the actual plutonium-238 heat source structure. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] In order to solve the above problems, the present application provides a modular simulated heat source device, comprising:

[0007] A shell, the shell comprising a shell body and a shell cover plate, the shell body is provided with a plurality of storage cavities, and the shell cover plate is arranged on the shell body for sealing the storage cavities;

[0008] A protection component, wherein the protection component is disposed in the storage cavity;

[0009] A core body, the core body being arranged inside the protective component;

[0010] A heating wire is arranged on the outer circumference of the core body, and two ends of the heating wire extend from two side surfaces of the shell.

[0011] Optionally, the protection component includes:

[0012] An inner shell, wherein the core is disposed in the inner shell;

[0013] An outer shell, wherein the inner shell is disposed inside the outer shell;

[0014] The inner shell is configured such that the two outer shells are arranged in the inner shell in opposite directions.

[0015] Optionally, the inner shell includes:

[0016] An inner shell, wherein the core is arranged in the inner shell;

[0017] An inner package cover plate is arranged on the inner package shell.

[0018] Optionally, the outer shell includes:

[0019] An outer shell, wherein the inner shell is disposed inside the outer shell;

[0020] An outer covering plate is arranged on the outer covering shell.

[0021] Optionally, the inner shell includes:

[0022] An inner shell, wherein the two outer shells are oppositely arranged in the inner shell;

[0023] An inner shell cover plate, the inner shell cover plate is arranged on the inner shell body;

[0024] When the inner shell is disposed in the storage cavity, the inner shell cover plate contacts the bottom of the storage cavity.

[0025] Optionally, a connecting pipe assembly is also included, and the connecting pipe assembly includes:

[0026] A first connecting pipe, the first connecting pipe is arranged between a side surface of the shell and a side surface of one of the two core bodies;

[0027] A second connecting pipe, the second connecting pipe is arranged between the other side surface of the shell and one side surface of the other of the two core bodies;

[0028] A third connecting pipe is arranged between the other side surfaces of the two core bodies.

[0029] Optionally, the heating wire is spirally arranged on the outer circumference of the core body through the first connecting tube, the second connecting tube and the third connecting tube.

[0030] Optionally, the pitch of the heating wire on the outer circumference of the core body is 1mm-2mm.

[0031] Optionally, the outer shell and the outer shell cover are provided with grooves, and the grooves are connected to the first connecting pipe and the second connecting pipe.

[0032] Optionally, there are two storage cavities, which are opened on the outer shell in opposite directions.

[0033] Beneficial Effects

[0034] A modular simulated heat source device provided in an embodiment of the present invention has the following beneficial effects: the structure of the device is basically consistent with the real plutonium-238 heat source, the core surface temperature field and the heat flow path are basically consistent with the real isotope heat source, and it can replace the isotope heat source to test and verify the performance and parameters of each key device and component of the system, as well as the output electrical performance of the test system, which can greatly reduce the cost of early research and speed up the research progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a cross-sectional structural diagram of a modular simulated heat source device of the present invention;

[0036] Figure 2 It is a structural diagram of the modular simulation heat source device of the present invention.

[0037] The reference numerals are:

[0038] 1. Outer shell; 11. Outer shell; 12. Outer shell cover; 2. Protective assembly; 21. Inner shell; 211. Inner shell; 212. Inner cover; 22. Outer shell; 221. Outer shell; 222. Outer cover; 23. Inner shell; 231. Inner shell; 232. Inner shell cover; 3. Core; 4. Heating wire; 5. First connecting tube; 6. Second connecting tube; 7. Third connecting tube; 8. Groove. DETAILED DESCRIPTION

[0039] In the description of the present application, 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" 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 invention 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 invention.

[0040] 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0043] See also Figure 1-2 As shown, according to an embodiment of the present application, a modular simulated heat source device is provided, comprising:

[0044] The housing 1 comprises a housing body 11 and a housing cover plate 12. The housing body 11 is provided with a plurality of storage cavities. The housing cover plate 12 is disposed on the housing body 11 and is used to seal the storage cavities.

[0045] A protection component 2, wherein the protection component 2 is disposed in the storage cavity;

[0046] A core 3, wherein the core 3 is disposed inside the protective component 2;

[0047] The heating wire 4 is arranged on the outer circumference of the core 3 , and two ends of the heating wire 4 extend from two side surfaces of the shell 1 .

[0048] The modular simulated heat source device provided in the embodiment of the present application includes a shell 1, a protective component 2, a core 3 and a heating wire 4. The shell 1 is the external structure of the entire device and plays a protective and supporting role. The shell 1 includes an outer shell 11 and an outer shell cover 12. A plurality of storage cavities are provided on the outer shell 11. These storage cavities provide installation space for the internal protective components 2, the core 3 and the heating wire 4. The outer shell 11 and the outer shell cover 12 can be made of high-strength materials, such as isotropic graphite, with good high temperature resistance and mechanical strength, and can maintain a stable structure under high temperature conditions. The outer shell cover 12 is arranged on the outer shell 11, and the storage cavity is sealed by a reliable connection method, such as screw fixing, to ensure the stability of the internal components and prevent the entry of external impurities. It can be understood that the screw material is also isotropic graphite. The protective component 2 is arranged in the storage cavity to provide further protection for the core 3, improve the safety and stability of the entire device, and protect the core 3 from external impact and leakage.

[0049] The core 3 is arranged inside the protective component 2 and is the core component of the simulated heat source. The core 3 can be made of high-performance materials such as cubic boron nitride, and has good high temperature resistance and thermal conductivity. A heating wire 4 is arranged on the outer circumference of the core 3, and the heating wire 4 can be made of materials such as molybdenum or tungsten, which has a high melting point and good electrical conductivity. The heating wire 4 is wound on the outer circumference of the core 3 in a specific manner, for example, a spiral winding method can be adopted to ensure uniform heating. The two ends of the heating wire 4 extend from the two sides of the outer shell 1 so as to be connected to an external power supply to achieve heating of the core 3.

[0050] It is understandable that when the external power supply is turned on, the heating wire 4 starts to heat up and transfers the heat to the core 3. The temperature of the core 3 rises under the action of the heating wire 4, simulating the heat output of the radioactive isotope heat source. The generated heat is transferred through the protective component 2 and the shell 1. The structure of this device is basically the same as the real plutonium-238 heat source. There are fewer connectors inside the shell 1. The heating wire 4 is spirally installed on the outside of the core 3 to simulate the heating of the radioactive source. The heating is uniform. The surface temperature field and heat flow path of the core 3 are basically the same as the real isotope heat source. The use of this device instead of the radioactive isotope heat source to test and verify the performance and parameters of each component in the device makes the research progress not limited by the radioactive heat source material, accelerates the research progress, and greatly reduces the research cost of the device.

[0051] The protection component 2 comprises:

[0052] An inner shell 21, wherein the core 3 is disposed inside the inner shell 21;

[0053] An outer shell 22, wherein the inner shell 21 is disposed inside the outer shell 22;

[0054] The inner shell 23 is composed of two outer shells 22 which are oppositely disposed in the inner shell 23 .

[0055] In this technical solution, the protective component 2 includes an inner shell 21, an outer shell 22 and an inner shell 23, providing multiple protections for the core 3. The inner shell 21, as the part in direct contact with the core 3, provides the first layer of protection for the core 3. The inner shell 21 can be made of a material with good thermal conductivity and high temperature resistance, such as boron nitride ceramics. The core 3 is tightly arranged in the inner shell 21, so that the heat generated by the core 3 during operation can be effectively transferred to the inner shell 21, and the inner shell 21 can also prevent the erosion of the core 3 by external impurities. The outer shell 22 is arranged outside the inner shell 21, providing a second layer of protection for the core 3. The outer shell 22 can be made of a material with good thermal conductivity and mechanical strength, such as isotropic graphite. At the same time, the outer shell 22 can also withstand a certain external pressure and impact, protecting the inner shell 21 and the core 3 from damage. The inner shell 23 is the outermost structure of the protective component 2, and the two outer shells 22 are reversely installed in the inner shell 23. To further improve the protection capability of the core 3 after installation, the inner shell 23 is installed in the storage cavity of the outer shell 1 to ensure that the protection component 2 can be securely installed in the outer shell 1 .

[0056] It can be understood that the device is made of cubic boron nitride ceramics by using the core 3 and the inner shell 21, and the outer shell 22, the inner shell 23 and the outer shell 1 are all made of isotropic graphite. By selecting the materials of the core, the inner shell, the outer shell, the inner shell and the outer shell, the device can be used in 10 -2 It can work stably for more than 500 hours in Pa vacuum and 1100℃~1400℃ environment.

[0057] The inner shell 21 comprises:

[0058] An inner shell 211, wherein the core 3 is disposed in the inner shell 211;

[0059] The inner package cover plate 212 is disposed on the inner package shell 211 .

[0060] The technical solution includes an inner shell 211 and an inner cover 212. The inner shell 211 is the part that directly accommodates the core 3, and the core 3 can be stably arranged inside the inner shell 211. When the core 3 is placed inside the inner shell 211, the inner cover 212 can seal the core 3 to protect the core 3. The core 3 and the inner shell 21 are both made of cubic boron nitride ceramic material. When the heating wire 4 is heated, the heat can be evenly transferred to the outer shell 22 and the inner shell 23 to achieve effective heat transfer.

[0061] The outer shell 22 includes:

[0062] An outer shell 221, wherein the inner shell 21 is disposed inside the outer shell 221;

[0063] The outer covering plate 222 is disposed on the outer casing 221 .

[0064] In this technical solution, the outer shell 22 includes an outer shell 221 and an outer cover 222. The outer shell 221 is used to store the inner shell 21. The outer cover 222 can seal the inner shell 21 inside the outer shell 221. The outer shell 22 is made of isotropic graphite, which has good thermal conductivity and mechanical properties. It can protect the core 3 while efficiently transferring heat.

[0065] The inner shell 23 comprises:

[0066] An inner shell 231, wherein the two outer shells 22 are oppositely disposed in the inner shell 231;

[0067] An inner shell cover plate 232, wherein the inner shell cover plate 232 is disposed on the inner shell 231;

[0068] When the inner shell 23 is disposed in the storage cavity, the inner shell cover plate 232 contacts the bottom of the storage cavity.

[0069] The inner shell 23 provided in the embodiment of the present application includes an inner shell 231 and an inner shell cover 232. When the outer shell 22 is placed inside the inner shell 231, the outer shell 22 is reversely installed inside the inner shell 231, that is, the two outer cover plates 222 are in contact with each other after installation, which not only realizes the protection of the outer shell 22, but also further strengthens the fixing ability of the core body 3. The outer shell 22 is then fixed by the inner shell cover 232, further improving the protection and fixing ability of the core body 3.

[0070] Also included is a connecting pipe assembly, the connecting pipe assembly comprising:

[0071] A first connecting pipe 5, the first connecting pipe 5 is arranged between a side surface of the shell 1 and a side surface of one of the two core bodies 3;

[0072] A second connecting pipe 6, the second connecting pipe 6 is arranged between the other side surface of the shell 1 and one side surface of the other of the two core bodies 3;

[0073] The third connecting pipe 7 is arranged between the other side surfaces of the two core bodies 3 .

[0074] In this technical solution, the connecting pipe assembly includes a first connecting pipe 5, a second connecting pipe 6 and a third connecting pipe 7. Through the arrangement of the first connecting pipe 5, the second connecting pipe 6 and the third connecting pipe 7, the two cores 3 can be connected in series using the same heating wire 4, making the structure of the simulated heat source device more compact and reducing the space occupied; the two cores 3 are connected in series using the same heating wire 4, which helps to achieve uniform distribution of heat between the two cores 3. Reducing other internal electrical connectors and being closer to the real internal structure of the plutonium-238 heat source can more accurately simulate the heat output characteristics of the real heat source, making the test results more reliable and reducing the probability of failure inside the heat source.

[0075] It can be understood that the first connecting tube 5, the second connecting tube 6 and the third connecting tube 7 are all corundum tubes, which have high temperature resistance and insulation properties, and can improve the safety of use.

[0076] The heating wire 4 is spirally arranged on the outer circumference of the core body 3 through the first connecting tube 5 , the second connecting tube 6 and the third connecting tube 7 .

[0077] The pitch of the heating wire 4 on the outer circumference of the core 3 is 1 mm-2 mm.

[0078] In this technical solution, the core 3 is a cylindrical structure, and an internal thread is provided on its outer circumference. The pitch of the internal thread is 1mm-2mm. The internal thread is used to wrap the heating wire 4, which avoids the random movement of the heating wire 4 during the installation process and ensures the position accuracy of the heating wire 4 on the core 3. By winding the heating wire 4 with the internal thread, the heating wire 4 can be evenly distributed on the outer circumference of the core 3. In this way, it can ensure that the core 3 heats more evenly during the heating process, and the heat generated by the core 3 during the working process can be more evenly conducted to the outside, thereby improving the stability and reliability of the simulated heat source device.

[0079] It can be understood that the pitch between the internal threads is 1.5 mm.

[0080] It can be understood that the heating wire 4 is made of materials such as molybdenum or tungsten, which have a high melting point and good electrical conductivity.

[0081] The outer shell 11 and the outer shell cover 12 are provided with a groove 8 , and the groove 8 is communicated with the first connecting pipe 5 and the second connecting pipe 6 .

[0082] In this technical solution, a groove 8 is provided on the outer shell 11 and the outer shell cover 12, and the groove 8 is connected to the first connecting tube 5 and the second connecting tube 6. The heating wire 4 is installed on the outer periphery of the core body 3 through the first connecting tube 5 and the second connecting tube 6 through the groove 8. Through the setting of the groove 8, the heating wire 4 can be stored, the movement of the heating wire 4 during use is reduced, and the stability of the heating wire 4 is improved.

[0083] There are two storage chambers, which are opened on the outer shell 11 in opposite directions.

[0084] In this technical solution, the number of storage cavities is two and they are arranged in opposite directions, making full use of the space inside the outer shell 11, making the structure of the entire modular simulated heat source device more compact. The two storage cavities opened in opposite directions help optimize heat distribution and balance, and can make heat distribution more uniform.

[0085] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A modular simulated heat source device, characterized in that: include: A housing (1), the housing (1) comprising an outer shell (11) and an outer shell cover (12), the outer shell (11) being provided with a plurality of storage cavities, the outer shell cover (12) being arranged on the outer shell (11) for sealing the storage cavities; A protection component (2), wherein the protection component (2) is arranged in the storage cavity; A core (3), wherein the core (3) is arranged inside the protective component (2); A heating wire (4), wherein the heating wire (4) is arranged on the outer circumference of the core (3), and two ends of the heating wire (4) extend out from two side surfaces of the outer shell (1).

2. The modular simulated heat source device according to claim 1, characterized in that: The protection component (2) comprises: An inner shell (21), wherein the core (3) is arranged in the inner shell (21); An outer shell (22), wherein the inner shell (21) is arranged inside the outer shell (22); An inner shell (23), wherein the two outer shells (22) are arranged in opposite directions inside the inner shell (23).

3. The modular simulated heat source device according to claim 2, characterized in that: The inner shell (21) comprises: An inner enclosure shell (211), wherein the core (3) is arranged in the inner enclosure shell (211); An inner package cover plate (212), wherein the inner package cover plate (212) is arranged on the inner package shell (211).

4. The modular simulated heat source device according to claim 3, characterized in that: The outer shell (22) comprises: An outer casing (221), wherein the inner casing (21) is arranged inside the outer casing (221); An outer covering plate (222), wherein the outer covering plate (222) is arranged on the outer covering shell (221).

5. The modular simulated heat source device according to claim 4, characterized in that: The inner shell (23) comprises: An inner shell (231), wherein the two outer shells (22) are arranged in opposite directions inside the inner shell (231); An inner shell cover plate (232), the inner shell cover plate (232) being arranged on the inner shell body (231); When the inner shell (23) is arranged in the storage cavity, the inner shell cover plate (232) is in contact with the bottom of the storage cavity.

6. The modular simulated heat source device according to claim 5, characterized in that: Also included is a connecting pipe assembly, the connecting pipe assembly comprising: A first connecting tube (5), the first connecting tube (5) being arranged between a side surface of the shell (1) and a side surface of one of the two core bodies (3); A second connecting pipe (6), the second connecting pipe (6) being arranged between the other side surface of the shell (1) and one side surface of the other of the two core bodies (3); A third connecting pipe (7), the third connecting pipe (7) being arranged between the other side surfaces of the two core bodies (3).

7. The modular simulated heat source device according to claim 6, characterized in that: The heating wire (4) is spirally arranged on the outer circumference of the core body (3) through the first connecting tube (5), the second connecting tube (6) and the third connecting tube (7).

8. The modular simulated heat source device according to claim 7, characterized in that: The pitch of the heating wire (4) on the outer circumference of the core (3) is 1 mm-2 mm.

9. The modular simulated heat source device according to claim 8, characterized in that: The outer shell (11) and the outer shell cover (12) are provided with a groove (8), and the groove (8) is communicated with the first connecting pipe (5) and the second connecting pipe (6).

10. The modular simulated heat source device according to claim 9, characterized in that: The number of the storage chambers is two, and they are opened on the outer shell (11) in opposite directions.

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