Special-shaped high-temperature heat pipe type heat dredging protection device and manufacturing method thereof
By decomposing the high-temperature heat pipe-type heat-conducting protective device into multiple irregularly shaped heat pipe unit devices and adopting a specific structural design, the problems of high manufacturing difficulty, low yield and poor adaptability in the existing technology are solved, realizing efficient heat transfer and low-cost processing, and adapting to complex heat flow changes.
Patent Information
- Application Number
- CN202511934424.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-20
- Publication Date
- 2026-02-06
AI Technical Summary
Existing heat transfer systems for hypersonic vehicles suffer from high manufacturing difficulty, low yield, poor adaptability, and high cost. They also struggle to achieve rapid and efficient heat transfer across multiple degrees of freedom, and the need to conceal the filling structure in the overall design impacts processing efficiency and cost.
The high-temperature heat pipe thermal protection device is decomposed into multiple irregular high-temperature heat pipe unit devices. Each device is independent and welded through the connecting surface. It is equipped with a filling structure and an alkali metal working fluid suction structure. Multi-layer composite wire mesh and capillary grooves are used to provide capillary force. Process holes are reserved during welding to maintain pressure stability and adapt to the aerodynamic shape of the aircraft.
It improves the reliability and adaptability of the device, reduces the difficulty and cost of processing, increases the yield and processing efficiency, extends the service life, simplifies the structure and adapts to complex heat flow changes.
Smart Images
Figure CN121469847A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of high-temperature heat conduction and protection technology, and particularly relates to a non-standard high-temperature heat pipe heat conduction and protection device and its manufacturing method. Background Technology
[0002] During hypersonic vehicle launch, components such as rudders, wing leading edges, and stagnation point structures face severe aerodynamic and thermal environments, requiring thermal protection measures for safe operation. As hypersonic vehicles evolve towards miniaturization, high lift-to-drag ratio, high maneuverability, long endurance, and high reusability, higher demands are placed on their aerodynamic and thermal protection: 1) further reducing the mass of thermal protection structures; 2) achieving long-duration hypersonic maneuvering within the atmosphere; 3) maintaining a high lift-to-drag ratio aerodynamic shape, etc. Traditional heat-absorbing / radiative and ablation-type thermal protection structures are ill-suited to the new requirements of hypersonic vehicles. High-temperature heat transfer thermal protection is a novel type of heat protection. It primarily utilizes a high-temperature liquid working fluid that evaporates and undergoes a phase change in the aerodynamically heated nose region of the wing, absorbing heat. Then, under the influence of the vapor pressure difference within the tube, the heat is transferred to the rear region where it condenses and releases heat. This heat is then conducted to the large, low-temperature area on the leeward side of the aircraft, radiating into the atmosphere. The condensed high-temperature liquid working fluid, under the capillary force provided by the wick within the tube, flows back to the nose region, creating a cycle of working fluid flow and heat migration. This continuously transfers the aerodynamic heat absorbed by the nose to the large rear region, reducing the nose temperature and bringing the entire structure closer to isothermal conditions, thus reducing structural thermal stress. Compared to traditional ablation thermal protection, heat transfer thermal protection does not alter the aerodynamic shape of the aircraft surface and can be reused repeatedly. However, the state equation relating temperature, pressure, and density in the alkali metal working fluids used in existing heat-conducting systems, while enabling rapid heat transfer in one direction and achieving high-temperature heat conduction characteristics, makes it difficult to achieve rapid and efficient heat transfer across multiple degrees of freedom within the overall structure, resulting in poor adaptability. Furthermore, existing heat-conducting systems are monolithic structures operating under high temperature and negative pressure. To ensure the aerodynamic shape and heat transfer effect, complex support structures to maintain rigidity and complex working fluid suction structures are required internally, leading to extremely high processing difficulty, high costs, low yield, and low manufacturing efficiency. Moreover, since there is only one filling port, any defect or carelessness during manufacturing can cause the entire device to fail or even be scrapped. Additionally, to maintain the aerodynamic shape of the aircraft surface, the filling structure needs to be hidden or supplemented with other auxiliary structures, increasing sealing difficulty, processing costs, and reducing processing efficiency. Summary of the Invention
[0003] In view of this, the present invention aims to provide a non-standard high-temperature heat pipe thermal protection device and its manufacturing method, so as to reduce manufacturing difficulty, increase yield, and improve processing efficiency.
[0004] To achieve the above objectives, the technical solution created by this invention is implemented as follows: The first aspect of this invention provides a non-standard high-temperature heat pipe-type heat-conducting and heat-protecting device, comprising: Multiple irregularly shaped high-temperature heat pipe unit devices are welded together through connecting surfaces to form an irregularly shaped high-temperature heat pipe type heat conduction and protection device. The irregularly shaped high-temperature heat pipe type heat conduction and protection device has a preset shape. The irregularly shaped high-temperature heat pipe unit device is equipped with a filling structure; The irregular high-temperature heat pipe unit device has a closed cavity inside, which is filled with an alkali metal working medium for cooling and heat dissipation. The closed cavity also has an alkali metal working medium suction structure to draw the alkali metal working medium to the hot end side of the irregular high-temperature heat pipe type heat conduction and protection device.
[0005] Furthermore, the length of each irregularly shaped high-temperature heat pipe unit is less than or equal to 1000 mm, the width is less than or equal to 100 mm, and the height is less than or equal to 100 mm.
[0006] Furthermore, the filling structure includes a filling port and a blind plug. The connection surface of the irregular high-temperature heat pipe unit device is provided with a filling port and / or a blind plug, and the filling port and blind plug on the opposite connection surface of two adjacent irregular high-temperature heat pipe unit devices are respectively matched to ensure that the filling structure does not affect the preset shape of the irregular high-temperature heat pipe type heat conduction and protection device.
[0007] Furthermore, each irregularly shaped high-temperature heat pipe unit device includes a hot end and a cold end, with a height difference between the hot end and the cold end, so that the alkali metal working medium in the closed cavity can move to the hot end side under the action of gravity; when multiple irregularly shaped high-temperature heat pipe unit devices are welded through the connecting surface, process holes are reserved on the welding surface.
[0008] Furthermore, the alkali metal working fluid suction structure is a multi-layer composite wire mesh and / or capillary grooves. The multi-layer composite wire mesh and / or capillary grooves can provide capillary force to move the alkali metal working fluid back to the hot end side of the irregular high-temperature heat pipe type thermal conductive protection device.
[0009] Furthermore, the multi-layer composite wire mesh material is the same as that of the irregular high-temperature heat pipe unit device, the mesh size is 100#~400#, and the number of wire mesh layers in the multi-layer composite wire mesh is 2 to 10 layers.
[0010] Another aspect of this invention provides a method for manufacturing an irregularly shaped high-temperature heat pipe-type thermal conductive protective device, used to manufacture the irregularly shaped high-temperature heat pipe-type thermal conductive protective device mentioned in the first aspect, comprising: Processing multiple irregularly shaped high-temperature heat pipe unit devices; Multiple irregularly shaped high-temperature heat pipe unit devices are welded and combined to form an irregularly shaped high-temperature heat pipe type heat conduction and protection device with a preset shape. Adaptive heat transfer performance testing of irregularly shaped high-temperature heat pipe thermal protection devices; An auxiliary structure is added to the irregular high-temperature heat pipe thermal protection device that has passed the adaptive heat transfer performance test.
[0011] Furthermore, the fabrication of multiple irregularly shaped high-temperature heat pipe unit devices includes: Process irregularly shaped caps, and set an alkali metal working fluid suction structure on the irregularly shaped caps to form an alkali metal working fluid suction structure irregularly shaped cap; The cavity is processed, and an alkali metal working fluid suction structure is set on the cavity to form an alkali metal working fluid suction structure cavity; The shaped cover and cavity of the alkali metal working fluid suction structure are welded together to form the housing of the shaped high-temperature heat pipe unit device, and flaw detection is performed to ensure that it meets the predetermined requirements. The shell of the irregular high-temperature heat pipe unit device is degassed under high temperature and vacuum, filled with alkali metal working fluid, sealed and formed, and pretreated to make the alkali metal working fluid uniformly adhere to the alkali metal working fluid suction structure, or to make the alkali metal working fluid in a preset position, thus forming the irregular high-temperature heat pipe unit device to be tested. Adaptive heat transfer performance testing is performed on the irregular high-temperature heat pipe unit device to be tested. If the test is qualified, the processing of a single irregular high-temperature heat pipe unit device is completed. Repeat the above steps until the fabrication of multiple irregularly shaped high-temperature heat pipe unit devices is completed.
[0012] Furthermore, multiple irregularly shaped high-temperature heat pipe unit devices are welded and combined to form an irregularly shaped high-temperature heat pipe type heat conduction and protection device, including: Grind the edges of multiple irregularly shaped high-temperature heat pipe unit devices to be welded, and then connect the multiple irregularly shaped high-temperature heat pipe unit devices by welding to form a shape, leaving process holes during welding; Multiple irregularly shaped high-temperature heat pipe unit devices that have been welded together are subjected to high-temperature calibration and cooling to form an irregularly shaped high-temperature heat pipe type heat conduction and protection device with a preset shape.
[0013] Furthermore, adaptive heat transfer performance testing includes: The test device is cold-started; Multi-angle steady-state heat transfer performance testing, heat transfer performance testing under vibration environment, and high-temperature large heat transfer performance testing.
[0014] Compared with the prior art, the present invention can achieve the following beneficial effects: The irregularly shaped high-temperature heat pipe type thermal protection device provided by this invention comprises multiple independent irregularly shaped high-temperature heat pipe unit devices. Even if a single irregularly shaped high-temperature heat pipe unit device fails, the other irregularly shaped high-temperature heat pipe unit devices can still provide thermal protection, greatly improving the reliability of the irregularly shaped high-temperature heat pipe type thermal protection device. Simultaneously, this invention decomposes the overall irregularly shaped high-temperature heat pipe type thermal protection device into multiple small-sized irregularly shaped high-temperature heat pipe unit devices. Each irregularly shaped high-temperature heat pipe unit device does not require complex support structures, and there is no need to hide the filling structure or add other auxiliary structures. Furthermore, the small size and simple structure of each irregularly shaped high-temperature heat pipe unit device ensures high processing accuracy. Although the number of processed parts increases, the processing steps are all existing conventional operations, reducing processing difficulty, simplifying the processing technology, improving overall processing efficiency, reducing overall processing costs, and significantly increasing the yield rate while reducing sealing difficulty.
[0015] This invention limits the size of each irregularly shaped high-temperature heat pipe unit device. Since the closed cavity of each irregularly shaped high-temperature heat pipe unit device is within a predetermined range, it is easier to make the alkali metal working fluid evenly distributed, ensuring that the suction capacity of the alkali metal working fluid suction structure is within the normal range, and the start-up response is rapid. Even when faced with complex and ever-changing external heat flow changes, such as changes in the heated position of the high-temperature heat pipe type heat conduction and heat protection device, it can start up quickly and respond in real time, with strong adaptability, which greatly improves the heat protection performance and extends the service life of the device.
[0016] The irregular high-temperature heat pipe thermal protection device provided by this invention, because the filling port and the blind plug are respectively matched and adapted, does not affect the overall shape of the irregular high-temperature heat pipe thermal protection device. It does not require subsequent concealment of the filling structure or addition of other auxiliary structures. Therefore, the irregular high-temperature heat pipe thermal protection device of this invention is more adaptable to the aerodynamic shape of the aircraft without affecting flight performance. It can realize the integrated structure and function configuration, simplify the structure, and reduce weight. At the same time, it simplifies the processing technology, reduces the sealing difficulty, reduces processing costs, and improves processing efficiency.
[0017] In this invention, the hot and cold ends of each irregularly shaped high-temperature heat pipe unit device have a height difference of inclination, so that the alkali metal working medium in the closed cavity can move to the hot end side under the action of gravity. This can ensure that there is a sufficient amount of alkali metal working medium in the hot end under normal conditions, so that the irregularly shaped high-temperature heat pipe type heat conduction and protection device can cope with the impact of high temperature and large heat flow.
[0018] This invention, by reserving process holes, ensures that the gap is always open to the outside, maintaining a constant pressure at the gap. This completely eliminates the additional stress that changes in air pressure at the gap would cause to the irregularly shaped high-temperature heat pipe thermal protection device, further extending its service life. Attached Figure Description
[0019] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 A schematic diagram of a non-standard high-temperature heat pipe-type heat-conducting and heat-protecting device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram from another angle of an embodiment of the present invention for a non-standard high-temperature heat pipe-type heat-conducting and heat-protecting device; Figure 3 A side view schematic diagram of a non-standard high-temperature heat pipe type heat conduction and protection device provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the first irregular high-temperature heat pipe unit provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the second irregular high-temperature heat pipe unit provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the third irregular high-temperature heat pipe unit provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the fourth irregular high-temperature heat pipe unit provided in an embodiment of the present invention; Figure 8 This is a structural schematic diagram of the fourth irregular high-temperature heat pipe unit provided in an embodiment of the present invention from another angle; Figure 9 This is a schematic diagram of the structure of the fifth irregular high-temperature heat pipe unit provided in an embodiment of the present invention.
[0020] Explanation of reference numerals in the attached drawings: First irregular high-temperature heat pipe unit 1, first filling port 101, second irregular high-temperature heat pipe unit 2, second filling port 201, first blind plug 202, third irregular high-temperature heat pipe unit 3, third filling port 301, second blind plug 302, fourth irregular high-temperature heat pipe unit 4, fourth filling port 401, third blind plug 402, fifth blind plug 403, fifth irregular high-temperature heat pipe unit 5, fifth filling port 501, fourth blind plug 502, first process hole 6, second process hole 7, third process hole 8, fourth process hole 9. Detailed Implementation
[0021] Analysis revealed that the existing thermal protection systems using alkali metal working fluids exhibit a state equation relationship between temperature, pressure, and density. However, due to the suction limit of the wire mesh structure, while rapid heat transfer in one direction is possible to achieve high-temperature thermal conduction and heat transfer characteristics, it is difficult to achieve rapid and efficient heat transfer across multiple degrees of freedom within the overall structure, resulting in poor adaptability. Furthermore, the existing thermal protection systems are monolithic structures operating under high temperature and negative pressure conditions. To ensure the aerodynamic shape and heat transfer effect, complex support structures to maintain rigidity and complex working fluid suction structures are required internally, which is extremely difficult, costly, and results in low yield and manufacturing efficiency. Moreover, since there is only one filling port, any defect can render the entire device unusable. Additionally, to maintain the aerodynamic shape of the aircraft surface, the filling structure needs to be hidden or supplemented with other auxiliary structures, increasing sealing difficulty, processing costs, and reducing processing efficiency.
[0022] To overcome the shortcomings of existing heat protection systems, embodiments of the present invention employ specific structural designs and processing methods to adapt to the development requirements of heat protection systems.
[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not constitute a limitation thereof.
[0024] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.
[0025] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.
[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0027] The invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0028] like Figures 1-9 As shown, this invention provides a non-standard high-temperature heat pipe thermal protection device, comprising: a first non-standard high-temperature heat pipe unit 1, a second non-standard high-temperature heat pipe unit 2, a third non-standard high-temperature heat pipe unit 3, a fourth non-standard high-temperature heat pipe unit 4, and a fifth non-standard high-temperature heat pipe unit 5. These units are welded together via connecting surfaces to form the non-standard high-temperature heat pipe thermal protection device, which has a predetermined shape. In some embodiments, the predetermined shape is the shape of an aircraft's rudder structure. If a single integrated non-standard high-temperature heat pipe thermal protection device is used, the entire device will fail to provide thermal protection if it fails for various reasons, resulting in a high risk of failure. This invention, because the irregularly shaped high-temperature heat pipe thermal protection device comprises multiple independent irregularly shaped high-temperature heat pipe unit devices, ensures that even if a single irregularly shaped high-temperature heat pipe unit device fails, the others can still provide thermal protection, significantly improving the reliability of the irregularly shaped high-temperature heat pipe thermal protection device. Furthermore, this invention decomposes the overall irregularly shaped high-temperature heat pipe thermal protection device into multiple small-sized irregularly shaped high-temperature heat pipe unit devices. Because the structure can withstand external heating and force loads, the internal support structure of each irregularly shaped high-temperature heat pipe unit device is simple, requiring no complex support structures, or even any additional support structures. Subsequent concealment of the filling structure or addition of other auxiliary structures is also unnecessary. Moreover, the small size and simple structure of each irregularly shaped high-temperature heat pipe unit device ensures high processing accuracy, and the processing steps are all existing conventional operations, reducing processing difficulty, simplifying the processing technology, greatly improving the yield rate, and simultaneously reducing sealing difficulty and processing costs.
[0029] The first irregular high-temperature heat pipe unit 1, the second irregular high-temperature heat pipe unit 2, the third irregular high-temperature heat pipe unit 3, the fourth irregular high-temperature heat pipe unit 4, and the fifth irregular high-temperature heat pipe unit 5 are all equipped with a filling structure.
[0030] The first irregular-shaped high-temperature heat pipe unit 1, the second irregular-shaped high-temperature heat pipe unit 2, the third irregular-shaped high-temperature heat pipe unit 3, the fourth irregular-shaped high-temperature heat pipe unit 4, and the fifth irregular-shaped high-temperature heat pipe unit 5 all have enclosed cavities filled with alkali metal working fluid. Each enclosed cavity also has an alkali metal working fluid suction structure to draw the alkali metal working fluid to the hot end side of the irregular-shaped high-temperature heat pipe type thermal conductive protection device. Specifically, the hot end side refers to the side of the irregular-shaped high-temperature heat pipe type thermal conductive protection device that is heated by the external environment.
[0031] In some embodiments, the alkali metal working medium is an element or an alloy, such as sodium, potassium, sodium-potassium alloy, cesium-potassium alloy, etc.
[0032] In some embodiments, the dimensions of the first irregular-shaped high-temperature heat pipe unit 1, the second irregular-shaped high-temperature heat pipe unit 2, the third irregular-shaped high-temperature heat pipe unit 3, the fourth irregular-shaped high-temperature heat pipe unit 4, and the fifth irregular-shaped high-temperature heat pipe unit 5 all satisfy the following: length less than or equal to 1000 mm, width less than or equal to 100 mm, and height less than or equal to 100 mm. Because the enclosed cavity in large high-temperature heat pipe-type thermal protection devices is large, the distribution of the alkali metal working fluid is easily uneven, and the start-up response is slow. Especially when facing complex and variable external heat flow conditions, it is easy for the heated end side to fail to receive wetting and cooling from the alkali metal working fluid, resulting in dry burning. This leads to poor adaptability and affects the service life of the device. The present invention limits the size of each irregular high-temperature heat pipe unit device. Since the closed cavity of each irregular high-temperature heat pipe unit device is within a predetermined range, it is easier to make the alkali metal working fluid evenly distributed, ensuring that the suction capacity of the alkali metal working fluid suction structure is within the normal range, and the start-up response is rapid. Even when faced with complex and ever-changing external heat flow changes, such as changes in the heated position of the high-temperature heat pipe type heat conduction and heat protection device, it can start up quickly and respond in real time, with strong adaptability, which greatly improves the heat protection performance and extends the service life of the device.
[0033] In some embodiments, the filling structure includes a filling port and a blind plug. Specifically, the first irregular high-temperature heat pipe unit 1 is provided with a first filling port 101, the second irregular high-temperature heat pipe unit 2 is provided with a second filling port 201 and a first blind plug 202, the third irregular high-temperature heat pipe unit 3 is provided with a third filling port 301 and a second blind plug 302, the fourth irregular high-temperature heat pipe unit 4 is provided with a fourth filling port 401, a third blind plug 402 and a fifth blind plug 403, and the fifth irregular high-temperature heat pipe unit 5 is provided with a fifth filling port 501 and a fourth blind plug 502. Furthermore, the first filling port 101 and the first blind plug 202 are correspondingly adapted, the second filling port 201 and the second blind plug 302 are correspondingly adapted, the third filling port 301 and the third blind plug 402 are correspondingly adapted, the fourth filling port 401 and the fourth blind plug 502 are correspondingly adapted, and the fifth filling port 501 and the fifth blind plug 403 are correspondingly adapted, so that the filling structure does not affect the preset shape of the irregular high-temperature heat pipe type thermal conductive protection device. In this invention, since the filling port and the blind plug are each correspondingly adapted, the overall shape of the irregular high-temperature heat pipe type thermal conductive protection device is not affected. There is no need to hide the filling structure or add other auxiliary structures. Therefore, the irregular high-temperature heat pipe type thermal conductive protection device of this invention is more adaptable to the aerodynamic shape of the aircraft without affecting flight performance. It can achieve an integrated structural and functional configuration, simplifying the structure and reducing weight; at the same time, it simplifies the processing technology, reduces the sealing difficulty, reduces processing costs, and improves processing efficiency.
[0034] In some embodiments, the first irregular-shaped high-temperature heat pipe unit 1, the second irregular-shaped high-temperature heat pipe unit 2, the third irregular-shaped high-temperature heat pipe unit 3, the fourth irregular-shaped high-temperature heat pipe unit 4, and the fifth irregular-shaped high-temperature heat pipe unit 5 all include a hot end and a cold end, and there is an inclination height difference between the hot end and the cold end, so that the alkali metal working medium in the closed cavity can move to the hot end side under the action of gravity, ensuring that there is a sufficient amount of alkali metal working medium in the hot end under normal conditions, so that the irregular-shaped high-temperature heat pipe type heat conduction and protection device can cope with the impact of high temperature and large heat flow. When the first irregular-shaped high-temperature heat pipe unit 1, the second irregular-shaped high-temperature heat pipe unit 2, the third irregular-shaped high-temperature heat pipe unit 3, the fourth irregular-shaped high-temperature heat pipe unit 4, and the fifth irregular-shaped high-temperature heat pipe unit 5 are welded through the connecting surface, the welding surface is reserved with a first process hole 6, a second process hole 7, a third process hole 8, and a fourth process hole 9. When two irregularly shaped high-temperature heat pipe unit devices are welded together, a gap inevitably exists between the weld seams because welding is only performed at the edges of the connection surfaces. Air is trapped in this gap. The applicant discovered that if no process holes are pre-drilled during welding, the air in the gap expands when heated, increasing the air pressure, and contracts when cooled, decreasing the air pressure. This pressure variation causes the device to bear additional stress, easily leading to damage and affecting its lifespan. This invention addresses this by pre-drilling process holes, ensuring the gap remains open to the outside environment. When heated, the air in the gap releases pressure through the process holes, and when cooled and contracted at low temperatures, outside air flows in through the process holes, maintaining a constant pressure. This completely eliminates the additional stress caused by pressure variations in the air in the gap, further extending the device's lifespan.
[0035] In some embodiments, the alkali metal working fluid suction structure is a multilayer composite wire mesh and / or capillary grooves. The multilayer composite wire mesh and / or capillary grooves can provide capillary force to move the alkali metal working fluid back to the hot end side of the irregular high-temperature heat pipe type heat conduction and protection device. That is, the alkali metal working fluid in the closed cavity of the first irregular high-temperature heat pipe unit 1, the second irregular high-temperature heat pipe unit 2, the third irregular high-temperature heat pipe unit 3, the fourth irregular high-temperature heat pipe unit 4, and the fifth irregular high-temperature heat pipe unit 5 is moved back to the hot end side of the first irregular high-temperature heat pipe unit 1, the second irregular high-temperature heat pipe unit 2, the third irregular high-temperature heat pipe unit 3, the fourth irregular high-temperature heat pipe unit 4, and the fifth irregular high-temperature heat pipe unit 5 under the action of capillary force.
[0036] In some embodiments, the multilayer composite wire mesh material is the same as that of the irregular high-temperature heat pipe unit device, the mesh size is 100-400 mesh, and the number of wire mesh layers in the multilayer composite wire mesh is 2-10 layers, preferably 5 layers.
[0037] This invention provides a method for manufacturing a non-standard high-temperature heat pipe type thermal conductive protective device, comprising: processing multiple non-standard high-temperature heat pipe unit devices; welding and assembling the multiple non-standard high-temperature heat pipe unit devices to form a non-standard high-temperature heat pipe type thermal conductive protective device with a preset shape; performing adaptive heat transfer performance testing on the non-standard high-temperature heat pipe type thermal conductive protective device; and adding auxiliary structures to the non-standard high-temperature heat pipe type thermal conductive protective device that meets the requirements of the adaptive heat transfer performance test. This invention decomposes a large non-standard high-temperature heat pipe type thermal conductive protective device into multiple small-sized non-standard high-temperature heat pipe unit devices. Each non-standard high-temperature heat pipe unit device does not require complex support structures, and there is no need to hide the filling structure or add other auxiliary structures. Furthermore, the small size and simple structure of each non-standard high-temperature heat pipe unit device ensures high processing accuracy. Although the number of processed parts increases, the processing steps are all existing conventional operations, reducing processing difficulty, simplifying the processing technology, improving overall processing efficiency, reducing overall processing cost, and significantly increasing the yield rate while reducing sealing difficulty.
[0038] In some embodiments, fabricating multiple irregularly shaped high-temperature heat pipe unit devices includes: Process the first irregular-shaped cap, and set the alkali metal working fluid suction structure on the first irregular-shaped cap to form the first alkali metal working fluid suction structure irregular-shaped cap; Process the first cavity, and set an alkali metal working fluid suction structure on the first cavity to form the first alkali metal working fluid suction structure cavity; The first alkali metal working fluid suction structure shaped cover and the first alkali metal working fluid suction structure cavity are welded to form the shell of the first shaped high temperature heat pipe unit 1. Specifically, the shell is made of metal and is subjected to flaw detection to ensure that it meets the predetermined requirements. The shell of the first irregular high-temperature heat pipe unit 1 is degassed under high temperature and vacuum, filled with alkali metal working fluid, sealed and formed, and pretreated to make the alkali metal working fluid uniformly adhere to the alkali metal working fluid suction structure, or to make the alkali metal working fluid in a preset position, thus forming the first irregular high-temperature heat pipe unit to be tested. Adaptive heat transfer performance testing was performed on the first irregular high-temperature heat pipe unit to be tested. If the test was qualified, the processing of the first irregular high-temperature heat pipe unit 1 was completed. Repeat the above operations to complete the processing of the second irregular high-temperature heat pipe unit 2, the third irregular high-temperature heat pipe unit 3, the fourth irregular high-temperature heat pipe unit 4, and the fifth irregular high-temperature heat pipe unit 5.
[0039] In some embodiments, multiple irregularly shaped high-temperature heat pipe unit devices are welded together to form an irregularly shaped high-temperature heat pipe type heat conduction and protection device, including: Grind the edges of the first irregular high-temperature heat pipe unit 1, the second irregular high-temperature heat pipe unit 2, the third irregular high-temperature heat pipe unit 3, the fourth irregular high-temperature heat pipe unit 4, and the fifth irregular high-temperature heat pipe unit 5 to be welded together. During welding, ensure that the filling port and the blind plug are properly matched and leave the first process hole 6, the second process hole 7, the third process hole 8, and the fourth process hole 9. The first irregular high-temperature heat pipe unit 1, the second irregular high-temperature heat pipe unit 2, the third irregular high-temperature heat pipe unit 3, the fourth irregular high-temperature heat pipe unit 4, and the fifth irregular high-temperature heat pipe unit 5, which are welded together, are subjected to high-temperature correction and cooling to form irregular high-temperature heat pipe type heat conduction and protection devices with a preset shape.
[0040] In some embodiments, adaptive heat transfer performance testing includes: The test device is cold-started; Multi-angle steady-state heat transfer performance testing, heat transfer performance testing under vibration environment, and high-temperature large heat transfer performance testing.
[0041] To facilitate understanding, the following explanations are provided for the testing of cold start-up of the test piece, steady-state heat transfer performance testing in multiple directions, heat transfer performance testing under vibration, and high-temperature, high-heat-flow heat transfer performance testing: Cold start of the test device (DDT) refers to the testing of the heat transfer performance of the DDT starting from room temperature.
[0042] Multi-angle steady-state heat transfer performance testing refers to testing the steady-state heat transfer performance of the high-temperature heat pipe unit device under test from various angles, including top and bottom, left and right, and front and back.
[0043] Vibration environment heat transfer performance testing refers to placing the high-temperature heat pipe unit device or irregularly shaped high-temperature heat pipe thermal conductive protection device under vibration environment to test its high-temperature heat transfer performance. For example, the high-temperature heat pipe unit device under test is placed in an environment with an oscillation angle of 10°~60° and an oscillation frequency of 0.1Hz~1.0Hz to test its high-temperature heat transfer performance.
[0044] High-temperature, high-heat-flow heat transfer performance testing refers to testing the heat transfer performance based on actual hot surface flow, with temperatures around 1500℃ or even exceeding 2000℃ and heat flux densities of 1.0-10.0 MW / ㎡.
[0045] It should be understood that the various forms of processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this invention disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this invention can be achieved, and this is not limited herein.
[0046] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.
Claims
1. A non-standard high-temperature heat pipe-type thermal protection device, characterized in that, include: Multiple irregularly shaped high-temperature heat pipe unit devices are welded together through connecting surfaces to form the irregularly shaped high-temperature heat pipe type heat conduction and protection device, which has a predetermined shape. The irregular high-temperature heat pipe unit device is provided with a filling structure; The irregular high-temperature heat pipe unit device has a closed cavity inside, which is filled with an alkali metal working medium. The closed cavity also has an alkali metal working medium suction structure to draw the alkali metal working medium to the hot end side of the irregular high-temperature heat pipe thermal protection device.
2. The irregular high-temperature heat pipe type heat conduction and protection device according to claim 1, characterized in that, Each of the aforementioned irregular high-temperature heat pipe unit devices has a length of less than or equal to 1000 mm, a width of less than or equal to 100 mm, and a height of less than or equal to 100 mm.
3. The irregular high-temperature heat pipe type heat conduction and protection device according to claim 1, characterized in that, The filling structure includes a filling port and a blind plug. The connection surface of the irregular high-temperature heat pipe unit device is provided with a filling port and / or a blind plug. The filling port and blind plug on the opposite connection surfaces of two adjacent irregular high-temperature heat pipe unit devices are respectively matched to ensure that the filling structure does not affect the preset shape of the irregular high-temperature heat pipe thermal protection device.
4. The irregular high-temperature heat pipe type heat conduction and protection device according to claim 1, characterized in that, Each of the aforementioned irregular high-temperature heat pipe unit devices includes a hot end and a cold end, with a height difference between the hot end and the cold end, so that the alkali metal working fluid in the enclosed cavity can move to the hot end side under the action of gravity; when multiple irregular high-temperature heat pipe unit devices are welded through the connecting surface, process holes are reserved on the welding surface.
5. The irregular high-temperature heat pipe type heat-conducting and heat-protecting device according to claim 1 or 4, characterized in that, The alkali metal working fluid suction structure is a multi-layer composite wire mesh and / or capillary grooves. The multi-layer composite wire mesh and / or capillary grooves can provide capillary force to move the alkali metal working fluid back to the hot end side of the irregular high-temperature heat pipe type thermal conductive protection device.
6. The irregular high-temperature heat pipe type heat conduction and thermal protection device according to claim 5, characterized in that, The multi-layer composite wire mesh is made of the same material as the irregular high-temperature heat pipe unit device, and the mesh size is 100-400 mesh. The number of wire mesh layers in the multi-layer composite wire mesh is 2-10 layers.
7. A method for manufacturing an irregularly shaped high-temperature heat pipe-type thermal conductive protective device, characterized in that, For manufacturing the irregular high-temperature heat pipe type thermal conductive protection device as described in any one of claims 1 to 6, comprising: Processing multiple irregularly shaped high-temperature heat pipe unit devices; Multiple irregularly shaped high-temperature heat pipe unit devices are welded and combined to form an irregularly shaped high-temperature heat pipe type heat conduction and protection device with a preset shape. Adaptive heat transfer performance testing of irregularly shaped high-temperature heat pipe thermal protection devices; An auxiliary structure is added to the irregular high-temperature heat pipe thermal protection device that has passed the adaptive heat transfer performance test.
8. The method for manufacturing a non-standard high-temperature heat pipe type thermal protection device according to claim 7, characterized in that, The fabrication of multiple irregularly shaped high-temperature heat pipe unit devices includes: Process an irregularly shaped cap, and set an alkali metal working fluid suction structure on the irregularly shaped cap to form an alkali metal working fluid suction structure irregularly shaped cap; A processing cavity is provided, and an alkali metal working fluid suction structure is provided on the cavity to form an alkali metal working fluid suction structure cavity; The shaped cover and cavity of the alkali metal working fluid suction structure are welded together to form the housing of the shaped high-temperature heat pipe unit device, and flaw detection is performed to ensure that it meets the predetermined requirements. The shell of the irregular high-temperature heat pipe unit device is degassed under high temperature and vacuum, filled with alkali metal working fluid, sealed and formed, and pretreated to make the alkali metal working fluid uniformly adhere to the alkali metal working fluid suction structure, or to make the alkali metal working fluid in a preset position, forming the irregular high-temperature heat pipe unit device to be tested. Adaptive heat transfer performance testing is performed on the irregular high-temperature heat pipe unit device to be tested. If the test is qualified, the processing of a single irregular high-temperature heat pipe unit device is completed. Repeat the above steps until the fabrication of multiple irregularly shaped high-temperature heat pipe unit devices is completed.
9. The method for manufacturing a non-standard high-temperature heat pipe type thermal protection device according to claim 7, characterized in that, Multiple irregularly shaped high-temperature heat pipe unit devices are welded and combined to form an irregularly shaped high-temperature heat pipe type heat conduction and protection device, including: Grind the edges of multiple irregularly shaped high-temperature heat pipe unit devices to be welded, and then connect the multiple irregularly shaped high-temperature heat pipe unit devices by welding to form a shape, leaving process holes during welding; Multiple irregularly shaped high-temperature heat pipe unit devices that have been welded together are subjected to high-temperature calibration and cooling to form an irregularly shaped high-temperature heat pipe type heat conduction and protection device with a preset shape.
10. The method for manufacturing a non-standard high-temperature heat pipe type thermal protection device according to claim 7 or 8, characterized in that, The adaptive heat transfer performance detection includes: The test device is cold-started; Multi-angle steady-state heat transfer performance testing, heat transfer performance testing under vibration environment, and high-temperature large heat transfer performance testing.