Electromagnetic induction heating device for single-side cook-off test of solid engine
The electromagnetic induction heating device realizes fast, uniform and precise heating of a solid engine on one side, solving the problems of slow heating speed, poor temperature uniformity and low control accuracy in traditional heating methods, and improving the test efficiency and safety.
Patent Information
- Application Number
- CN202510551199.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2025-07-25
Smart Images
Figure CN120369335A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of solid rocket motor safety tests, and particularly relates to an electromagnetic induction heating device for unilateral cook-off tests of solid rocket motors. Background Art
[0002] In the research and development and safety performance evaluation process of solid rocket motors, the unilateral cook-off test is a crucial test item. This test aims to simulate the response characteristics of a solid rocket motor when it is locally subjected to high temperatures during actual use or specific scenarios, and plays an irreplaceable role in evaluating the safety, reliability, and thermal protection performance of the motor.
[0003] Currently, traditional heating methods mainly include resistance wire heating and gas heating, etc. Resistance wire heating has problems such as slow heating speed and poor temperature uniformity, making it difficult to reach the high temperature required for the test in a short time, and it is also difficult to form a uniform temperature distribution on the unilateral surface of the solid rocket motor, affecting the accuracy and reliability of the test results. Although gas heating can provide a relatively high temperature, it has disadvantages such as complex equipment, high operation risks, environmental pollution, etc. At the same time, the temperature control accuracy during gas heating is relatively low, and it cannot meet the requirements for precise control of test conditions. Summary of the Invention
[0004] The purpose of the present invention is to solve the technical problems of slow heating speed, poor temperature uniformity, and low temperature control accuracy existing in the heating devices for unilateral cook-off tests of existing solid rocket motors, and to provide an electromagnetic induction heating device for unilateral cook-off tests of solid rocket motors.
[0005] To achieve the above purpose, the technical solution provided by the present invention is as follows:
[0006] There is provided an electromagnetic induction heating device for unilateral cook-off tests of solid rocket motors, including an electromagnetic heating component, a heat insulation protection shell, a tooling bracket, and a high-frequency power control system electrically connected to the electromagnetic heating component; the electromagnetic heating component includes a heating body and an electromagnetic induction heating coil. One side of the heating body is used to be close to the shell of the heating area of the solid rocket motor, and the electromagnetic induction heating coil is arranged on the other side. The heating body can generate induced current and heat under the alternating magnetic field generated by the electromagnetic induction heating coil; one end of the heat insulation protection shell has an opening for buckling on the shell of the heating area of the solid rocket motor and forming a closed space with the shell of the heating area of the solid rocket motor, and the electromagnetic heating component is located in the closed space; the tooling bracket is fixedly connected to the heat insulation protection shell and the electromagnetic heating component for fixing the heat insulation protection shell and the electromagnetic heating component; the high-frequency power control system is used to obtain the real-time temperature of the shell of the heating area of the solid rocket motor to adjust the high-frequency alternating current output to the electromagnetic induction heating coil.
[0007] Further, the shell of the solid engine heating area includes multiple sub-heating areas; multiple groups of electromagnetic heating components are provided and correspond to the sub-heating areas one by one. The electromagnetic induction heating coils in each electromagnetic heating component are respectively electrically connected to the high-frequency power control system.
[0008] Further, the size of the heating body matches that of the shell of the solid engine heating area.
[0009] Further, the high-frequency power control system includes a high-frequency power supply, a temperature sensor, and a power controller; the high-frequency power supply is electrically connected to the electromagnetic induction heating coil, the temperature sensor is installed around the heating area inside the heat insulation protection shell, and the power controller is respectively electrically connected to the high-frequency power supply and the temperature sensor. The power controller adjusts the output power of the high-frequency power supply according to the real-time temperature collected by the sensor.
[0010] Further, the heat insulation protection shell includes a protection fence. One end of the protection fence facing away from the solid engine shell has a protection back plate, and one end of the protection fence close to the solid engine shell fits with the solid engine outer shell.
[0011] Further, the heat insulation protection shell further includes a protection partition located inside the heat insulation protection shell, and the protection partition is used to isolate each sub-heating area from the adjacent sub-heating areas.
[0012] Further, the protection fence, the protection back plate, and the protection partition are all composed of composite heat insulation plates. The composite heat insulation plates sequentially include a high-temperature resistant ceramic fiber heat insulation layer, an aerogel heat insulation layer, and a metal protection layer from the inside to the outside.
[0013] Further, the electromagnetic induction heating coil adopts a structure of a hollow tube embedded with a water cooling channel.
[0014] The advantages of the present invention are as follows:
[0015] 1. The electromagnetic induction heating device designed by the present invention can, compared with the traditional resistance wire heating and gas heating methods, raise the temperature of the single side surface of the solid engine to the high temperature required for the test within a short time, greatly shortening the test cycle and improving the test efficiency. Through the tooling bracket, the heating body is fixed at the optimal heating distance close to the shell of the solid engine heating area, so that the heat generated by the electromagnetic heating component can be evenly transferred to the heating area. The high-frequency power control system can timely control the heating temperature of the electromagnetic heating component based on the temperature of the solid engine heating area, enabling the temperature of the heating area to approach the preset temperature and improving the temperature control accuracy of the single side bake and burn test of the solid engine.
[0016] 2. The heat insulation protection shell designed by the present invention can block the heat generated by the electromagnetic heating component from diffusing to the surrounding environment, effectively reducing the heat diffusion, improving the heating efficiency, and preventing the components in the non-heating area of the solid engine from being damaged by the high temperature generated during the heating process. Description of the Drawings
[0017] Through the following description with reference to the drawings, the features and advantages of the present invention will become more readily understandable. The drawings are not drawn to scale, and some features are enlarged or reduced to show details of specific components. In the drawings:
[0018] Figure 1 is a schematic structural diagram of the electromagnetic induction heating device for the single-sided bake and burn test of the solid engine of the present invention;
[0019] Figure 2 is an exploded view of the electromagnetic induction heating device for the single-sided bake and burn test of the solid engine of the present invention;
[0020] Figure 3 is a schematic structural diagram of the electromagnetic heating assembly of the present invention;
[0021] Figure 4 is a schematic structural diagram of the heat insulation protective shell of the present invention;
[0022] In the figure: 1 - electromagnetic heating assembly; 11 - heating body; 12 - electromagnetic induction heating coil; 2 - heat insulation protective shell; 21 - protective fence; 22 - protective backboard; 23 - protective partition; 3 - tooling bracket; 4 - high-frequency power control system; 41 - temperature sensor; 42 - power controller; 43 - real-time temperature curve display screen; 5 - solid engine. Detailed Description of the Embodiment
[0023] The present invention will be described in detail below with reference to the accompanying drawings by means of exemplary embodiments of the present invention. It should be noted that the following detailed description of the present invention is for illustrative purposes only and does not limit the present invention.
[0024] This embodiment provides an electromagnetic induction heating device for the single-sided bake and burn test of a solid engine, as Figure 1 shown, including an electromagnetic heating assembly 1, a heat insulation protective shell 2, a tooling bracket 3, and a high-frequency power control system 4.
[0025] As Figure 2 , 3 shown, the electromagnetic heating assembly 1 includes a heating body 11 and an electromagnetic induction heating coil 12. One side of the heating body 11 is used to be close to the shell of the heating area of the solid engine 5, and the electromagnetic induction heating coil 12 is arranged on the other side. The heating body 11 can generate induced current to heat under the alternating magnetic field generated by the electromagnetic induction heating coil 12.
[0026] The shape and size of the heating body 11 are precisely designed to be in imitation of the outer contour of the solid engine 5 and match the shell of the heating area of the solid engine 5. The winding method of the electromagnetic induction heating coil 12 is as Figure 3As shown in the figure, specifically, the size of the heating element 11, the number of turns and wire diameter of the electromagnetic induction heating coil 12 are designed according to the size of the solid rocket motor 5, the heating power requirement and the output characteristics of the high-frequency power supply. Through the combination of appropriate number of turns and wire diameter of the electromagnetic induction heating coil 12, a uniform magnetic field distribution on the surface of the heating element 11 is achieved, so that the heating element 11 generates heat evenly; the profiling design of the heating element 11 makes the installation distance between the heating element 11 and the surface of the solid rocket motor 5 uniform and at the optimal heating distance; the heating element 11 and the electromagnetic induction heating coil 12 together ensure efficient and uniform heating of one side surface of the solid rocket motor 5. At the same time, there is no mechanical connection between the electromagnetic heating assembly 1 and the shell of the solid rocket motor 5, and the position can be adjusted at any time and flexibly, so that different solid rocket motors 5 can be heated; it can also avoid direct damage in case of explosion of the motor.
[0027] The heating element 11 can be made of iron alloy to achieve heating of the heating area below 600 °C; the heating element 11 can also be made of copper alloy to achieve heating of the heating area between 600 °C and 1000 °C; the heating element 11 can also be made of a more heat-resistant graphite material to achieve heating of the heating area above 1000 °C. The electromagnetic induction heating coil 12 is made of high-conductivity copper material, with optimized number of turns and wire diameter, and can form a uniform magnetic field distribution on the surface of the heating element 11, so as to achieve a uniform heating effect.
[0028] As Figure 2 、 4 shown in the figure, one end of the heat insulation and protection shell 2 has an opening for buckling on the shell of the heating area of the solid rocket motor 5 and forming a closed space with the shell of the heating area of the solid rocket motor 5. The electromagnetic heating assembly 1 is located in the closed space. It isolates the heat flow between the electromagnetic heating assembly 1 and the surrounding environment, as well as between the electromagnetic heating assembly 1 and the non-heating area of the solid rocket motor 5, reduces heat loss, improves heating efficiency, and prevents the high temperature generated during heating from damaging the surrounding equipment, ensuring the safety of the test.
[0029] As Figure 1 、 2 shown in the figure, the tooling bracket 3 is fixedly connected to the heat insulation and protection shell 2 and the electromagnetic heating assembly 1 for fixing the heat insulation and protection shell 2 and the electromagnetic heating assembly 1; one end of the tooling bracket 3 is placed on the platform to ensure stability during the test and facilitate the installation and debugging of the heating device. At the same time, the tooling bracket 3 can also be of a telescopic structure to adapt to various working conditions.
[0030] As Figure 1 、 2 shown in the figure, the high-frequency power supply control system 4 is electrically connected to the electromagnetic heating assembly 1, and the high-frequency power supply control system 4 is used to obtain the real-time temperature of the heating area to adjust the high-frequency alternating current output to the electromagnetic induction heating coil 12.
[0031] As Figure 3 shown, the shell of the heating zone of the solid motor 5 includes multiple sub-heating zones; there are multiple groups of electromagnetic heating components 1, which correspond to the sub-heating zones one by one. The electromagnetic induction heating coils 12 in each electromagnetic heating component 1 are respectively electrically connected to the high-frequency power control system 4. The high-frequency power control system 4 can independently control the heating temperature of different sub-heating zones, compensate for the heating of unevenly heated parts, further improve the temperature uniformity, make the actual heating temperature highly coincide with the preset temperature curve, meet the harsh requirements of the temperature control accuracy for the single-sided baking combustion test of the solid motor 5, and provide a reliable guarantee for the in-depth study of the performance of the solid motor 5 under different temperature conditions.
[0032] The electromagnetic heating component 1 adopts a grouped design + independent temperature control, and can adapt to solid motors 5 of various different shapes and sizes. Facing different test requirements and different parts of the solid motor 5, the electromagnetic induction heating coils 12 in a specific sub-heating zone can be flexibly turned on or off, and the heating power and time of different sub-heating zones can be adjusted to achieve the effect of adjusting the temperature of the sub-heating zone, effectively making up for the uneven heating problem or special temperature requirements caused by the irregular shape or material property differences of the solid motor 5. For example, for the complex structure or key parts of the engine, the heating can be focused on to improve the test pertinence and efficiency, greatly expanding the applicable range of the electromagnetic induction heating device.
[0033] As Figure 1 、 2 shown, the high-frequency power control system 4 includes a high-frequency power supply, a temperature sensor 41, a power controller 42, and a real-time temperature curve display screen 43 for displaying the temperature curve; the high-frequency power supply is electrically connected to the electromagnetic induction heating coil 12. The sensor selects a thermocouple or a thermistor with high precision and fast response speed, which can accurately capture the temperature change on the single-sided surface of the solid motor 5. The temperature sensor 41 is installed around the heating zone in the heat insulation protection shell 2 and can collect the temperature data during the heating process in real time. The power controller 42 is respectively electrically connected to the high-frequency power supply and the temperature sensor 41. The temperature data collected by the temperature sensor 41 is transmitted to the power controller 42. The power controller 42 adjusts the output power of the high-frequency power supply according to the real-time temperature collected by the sensor to precisely control the heating temperature, and controls the deviation between the actual heating temperature and the preset temperature curve within a very small range, meeting the strict requirements of the test for temperature control accuracy. For multiple sub-heating zones, multiple temperature sensors 41 are set to collect temperature data respectively, and the heating temperature of different sub-heating zones is controlled by the high-frequency power supply to achieve precise control of the heating temperature.
[0034] As Figure 4As shown in the figure, the heat insulation protective shell 2 includes a protective enclosure panel 21. On the side of the protective enclosure panel 21 facing away from the shell of the solid rocket motor 5, there is a protective back panel 22. The side of the protective enclosure panel 21 close to the shell of the solid rocket motor 5 is attached to the outer shell of the solid rocket motor 5 to reduce the heat dissipation from the heating area to the non-heating area. The protective enclosure panel 21 and the protective back panel 22 together isolate the heat generated by the electromagnetic heating component 1 from spreading to the surrounding environment, improve the heating efficiency, and protect the safety of the surrounding equipment.
[0035] As Figure 4 shown in the figure, the heat insulation protective shell 2 further includes a protective partition 23 located inside the heat insulation protective shell 2. The protective partition 23 is used to isolate each sub-heating area from the adjacent sub-heating area. It can adjust more accurately based on the temperature of a single sub-heating area, reduce the temperature influence between two adjacent sub-heating areas, and achieve more precise temperature control of different parts of the solid rocket motor 5.
[0036] The protective enclosure panel 21, the protective back panel 22, and the protective partition 23 are all made of composite heat insulation plates. The composite heat insulation plate sequentially includes a high-temperature resistant ceramic fiber heat insulation layer, an aerogel heat insulation layer, and a metal protective layer from the inside to the outside. The high-temperature resistant ceramic fiber heat insulation layer has good high-temperature resistance and heat insulation performance, and can effectively block the heat transfer to the surrounding environment; the aerogel heat insulation layer has an extremely low thermal conductivity, further improving the heat insulation effect; the metal protective layer can be made of materials such as aluminum alloy or stainless steel, and the metal protective layer plays a role in protecting the internal heat insulation material and preventing heat radiation. Concentrate the heat in each sub-heating area and accurately control the temperature requirements of the single-sided regional difference of the solid rocket motor 5.
[0037] The electromagnetic induction heating coil 12 adopts a structure with a hollow tube embedded with a water cooling channel, which can avoid overheating itself, and the cooling method can be water cooling or oil cooling.
[0038] The principle of the electromagnetic induction heating device designed in this embodiment is based on the electromagnetic induction phenomenon. It does not need to transfer heat from the outside through heat conduction, so the heating speed is extremely fast. Compared with the traditional resistance wire heating and gas heating methods, the electromagnetic induction heating device of the present invention can raise the temperature of the single-side surface of the solid motor 5 to the high temperature required for the test within a short time, greatly shortening the test cycle and improving the test efficiency. At the same time, using electric energy as the energy source, compared with the gas heating method, it does not generate combustion waste gas, is pollution-free to the environment, and has a high heating efficiency and less energy consumption, meeting the development requirements of energy conservation and environmental protection. The temperature control during the test only needs to be carried out remotely through the high-frequency power supply control system 4, ensuring the safety of the test participants. The design of the heat insulation protective shell 2 effectively reduces heat dissipation, lowers the temperature of the surrounding environment, and avoids damage to the surrounding equipment caused by high temperature. In addition, the stability design of the tooling bracket 3 ensures the safe fixation of the electromagnetic induction heating device during the test, further improving the safety of the test. The electromagnetic induction heating device for the single-side bake and burn test of the solid motor 5 of the present invention can achieve rapid, uniform and precise heating of the single side of the solid motor 5, meet the requirements of the single-side bake and burn test of the solid motor 5, and provide strong technical support for the research and development and performance evaluation of the solid motor 5.
[0039] Finally, it should be noted that the features mentioned and / or shown in the above description of the exemplary embodiments of the present invention can be combined in the same or similar manner into one or more other embodiments, combined with the features in other embodiments or replace the corresponding features in other embodiments. The technical solutions obtained by such combination or replacement should also be regarded as being included within the protection scope of the present invention.
Claims
1. An electromagnetic induction heating device for a single-sided baking and burning test of a solid rocket motor, characterized in that, include: An electromagnetic heating assembly (1) comprises a heating body (11) and an electromagnetic induction heating coil (12), wherein one side of the heating body (11) is used to be close to the heating zone shell of the solid engine (5), and the other side is provided with the electromagnetic induction heating coil (12), and the heating body (11) can generate induced current to generate heat under the alternating magnetic field generated by the electromagnetic induction heating coil (12); A heat-insulating protective shell (2) having an opening at one end, which is used to be buckled onto the shell of the heating zone of the solid engine (5) and to form a closed space with the shell of the heating zone of the solid engine (5), wherein the electromagnetic heating component (1) is located in the closed space; A tool support (3), the tool support (3) being fixedly connected to the heat-insulating protective shell (2) and the electromagnetic heating component (1), and being used to fix the heat-insulating protective shell (2) and the electromagnetic heating component (1); and a high-frequency power supply control system (4) electrically connected to the electromagnetic heating component (1), wherein the high-frequency power supply control system (4) is used to obtain the real-time temperature of the shell of the heating zone of the solid engine (5) so as to adjust the high-frequency alternating current output to the electromagnetic induction heating coil (12).
2. The electromagnetic induction heating device for the single-sided baking combustion test of the solid rocket motor according to claim 1, wherein, The heating zone shell of the solid engine (5) comprises a plurality of sub-heating zones; The electromagnetic heating components (1) are provided with a plurality of groups corresponding to the sub-heating zones one by one, and the electromagnetic induction heating coils (12) in each of the electromagnetic heating components (1) are respectively electrically connected to the high-frequency power supply control system (4).
3. The electromagnetic induction heating device for the unilateral cook-off test of a solid rocket motor according to claim 2, wherein The size of the heating body (11) matches the shell of the heating zone of the solid engine (5).
4. The electromagnetic induction heating device for the single-sided baking ignition test of a solid rocket motor according to claim 1 or 2, characterized in that, The high-frequency power supply control system (4) comprises a high-frequency power supply, a temperature sensor (41) and a power controller (42); The high-frequency power supply is electrically connected to the electromagnetic induction heating coil (12); the temperature sensor (41) is installed around the heating area in the heat-insulating protective shell (2); the power controller (42) is electrically connected to the high-frequency power supply and the temperature sensor (41), respectively; and the power controller (42) adjusts the output power of the high-frequency power supply according to the real-time temperature collected by the sensor.
5. The electromagnetic induction heating device for the single-sided baking and burning test of a solid rocket motor according to claim 1 or 2, characterized in that, The heat-insulating protective shell (2) comprises a protective panel (21), the end of the protective panel (21) facing away from the casing of the solid engine (5) having a protective back plate (22), and the end of the protective panel (21) close to the casing of the solid engine (5) is in contact with the outer shell of the solid engine (5).
6. The electromagnetic induction heating device for the single-sided baking and firing test of a solid motor according to claim 5, characterized in that, The heat-insulating protective shell (2) further comprises a protective baffle (23) located inside the heat-insulating protective shell (2), wherein the protective baffle (23) is used to isolate each of the sub-heating zones from the adjacent sub-heating zones.
7. The electromagnetic induction heating device for the single-sided baking and firing test of a solid motor according to claim 6, characterized in that, The protective enclosure (21), the protective back plate (22) and the protective partition (23) are all made of composite insulation boards, and the composite insulation board comprises, from the inside to the outside, a high-temperature resistant ceramic fiber insulation layer, an aerogel insulation layer and a metal protective layer.
8. The electromagnetic induction heating device for the unilateral bake and burn test of a solid motor according to claim 1, wherein The electromagnetic induction heating coil (12) adopts a hollow tube embedded with a water cooling channel structure.