A supergravity environment fire prevention and control system and a fire extinguishing method

Abstract

This invention relates to the field of spacecraft fire prevention technology, and discloses a fire prevention and control system and extinguishing method for hypergravity environments. The system includes: a cabin with an external accelerometer and internal smoke detectors, temperature sensors, and flame image detectors; and an extinguishing system housed within the cabin and electrically connected to a controller. The controller controls the extinguishing system to extinguish fires and / or trigger alarms based on detection data from the accelerometer, smoke detector, temperature sensor, and flame image detector. This invention couples the accelerometer to the extinguishing system, allowing the controller to control the extinguishing system based on the hypergravity multiple of the cabin, particularly adjusting the spray pressure of the air curtain nozzles and jet nozzles. This enables the extinguishing system to adapt to hypergravity environments, solving the technical problems of inaccurate initial fire detection, delayed response, and low extinguishing efficiency in hypergravity environments.

Description

Technical Field

[0001] This invention relates to the field of spacecraft fire prevention technology, and in particular to a fire prevention and control system and fire extinguishing method for hypergravity environments. Background Technology

[0002] In recent years, my country's space program has achieved leapfrog development, steadily completing the initial leap from low Earth orbit to deep space exploration. However, the smooth progress of space missions highly depends on safety assurance technologies in extreme environments. Among these, fire prevention and control, as a key safety barrier in the on-orbit operation and deep space exploration of spacecraft, has become increasingly technically challenging and important as exploration missions deepen.

[0003] During space exploration, spacecraft not only endure a hypergravity environment of 6-8g during launch, but also face sustained hypergravity conditions of 1.14-2.5g when exploring "massive" planets such as Jupiter and Saturn. In a hypergravity environment, fluid motion is significantly enhanced, combustion and heat / mass transfer rates are greatly increased, flame disturbance is amplified, and the combustion and smoke particle movement patterns deviate from those of a normal gravitational field. Therefore, conventional fire prevention systems suffer from inaccurate initial fire detection (including missed and false alarms) and delayed response times in fire suppression. Simultaneously, the hypergravity field also affects the diffusion and effectiveness of extinguishing agents, leading to a significant decrease in fire suppression efficiency and increasing the likelihood of incomplete extinguishing of open flames and rapid reignition after extinguishing, further exacerbating fire risks.

[0004] In view of this, how to provide an aviation fire prevention and control system and fire extinguishing method that overcomes the defects of inaccurate initial fire detection, delayed response and low fire extinguishing efficiency in hypergravity environment is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a fire prevention and control system and fire extinguishing method for hypergravity environments to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides a fire prevention and control system for hypergravity environments, comprising: The cabin has an external accelerometer and an internal smoke detector, temperature sensor, and flame image detector. The accelerometer is used to detect the hypergravity multiple of the cabin, the smoke detector is used to detect the concentration of smoke particles inside the cabin, the temperature sensor is used to detect the cabin temperature, and the flame image detector is used to acquire open flame images and determine the fire location and flame area. The fire extinguishing system is installed inside the cabin and electrically connected to the controller. The controller controls the fire extinguishing system to extinguish fires and / or trigger alarms based on the detection data from the acceleration sensor, smoke detector, temperature sensor, and flame image detector.

[0007] Furthermore, the fire extinguishing system includes an air curtain mechanism, which includes: The air duct is arranged in a ring below the top surface of the cabin. The air duct is connected to the air curtain inlet pipe, which is used to deliver carbon dioxide to the air duct. Multiple air curtain nozzles are provided on the lower surface of the air duct, and the air curtain nozzles are electrically connected to the controller.

[0008] Furthermore, the fire extinguishing system also includes a flame-retardant barrier mechanism, which comprises: The guide rail is arranged in a ring on the inner wall of the cabin, with a cavity defined inside and a guide groove at the bottom that communicates with the cavity; A rotating shaft is rotatably disposed within a cavity. A flexible flame-retardant composite material layer is wound around the rotating shaft, and the inner end of the flexible flame-retardant composite material layer is connected to the rotating shaft. The rotating shaft is driven to rotate by a drive mechanism, which is electrically connected to a controller. The high-density counterweight assembly has the outer end of the flexible flame-retardant composite material layer extending downward from the guide groove and connected to the high-density counterweight assembly. When the shaft rotates in the forward direction, the high-density counterweight assembly moves the flexible flame-retardant composite material layer downward by gravity and covers the lower surface of the inner side wall of the cabin. When the shaft rotates in the reverse direction, the high-density counterweight assembly and the flexible flame-retardant composite material layer move upward until the high-density counterweight assembly approaches the guide groove.

[0009] Furthermore, the fire extinguishing system also includes a directional jet mechanism, which comprises: The fire extinguishing agent storage chamber has a jet nozzle connected to its bottom and a jet air inlet pipe connected to its top. The jet air inlet pipe is used to deliver carbon dioxide to the fire extinguishing agent storage chamber. The fire extinguishing agent is stored in the fire extinguishing agent storage chamber. The fire extinguishing agent is mixed with carbon dioxide and then sprayed out from the jet nozzle. The jet nozzle has a parallel jet mode and a dispersed jet mode. The jet nozzle is electrically connected to the controller, which controls the opening and closing of the jet nozzle and the switching between the parallel jet mode and the dispersed jet mode.

[0010] Furthermore, a transverse support frame is provided on the inner wall of the cabin, and the smoke detector and temperature sensor can be installed at any position inside the transverse slide rail.

[0011] This invention also provides a method for extinguishing fires in hypergravity environments, utilizing a hypergravity environment fire prevention and control system, comprising the following steps: The system uses an accelerometer to detect the hypergravity of the cabin, a smoke detector to detect the concentration of smoke particles inside the cabin, a temperature sensor to detect the cabin temperature, and a flame image detector to acquire images of open flames and determine the location and area of ​​the fire. The controller obtains the temperature rise rate based on the cabin temperature, and classifies the fire level into warning, initial, and development stages based on the temperature rise rate, cabin temperature, open flame status, and smoke particle concentration. The controller controls the air curtain nozzles, rotating shaft, and jet nozzles according to the hypergravity of the cabin and the fire level.

[0012] Furthermore, the basis for classifying fire levels is as follows: Warning period: Temperature rise rate > 5℃ / s, no open flame, cabin temperature greater than preset temperature and / or smoke particle concentration greater than preset smoke particle concentration; Initial stage: There is an open flame, the flame area is less than or equal to the preset flame area, the cabin temperature is greater than the preset temperature and / or the smoke particle concentration is greater than the preset smoke particle concentration; Development stage: There is an open flame, the flame area is larger than the preset flame area, the cabin temperature is greater than the preset temperature and / or the smoke particle concentration is greater than the preset smoke particle concentration.

[0013] Furthermore, it also includes an alarm system that connects to the controller and can issue different alarm signals according to different fire levels.

[0014] Furthermore, during the warning period, the controller executes fire extinguishing mode one, controlling the opening of the air curtain nozzles based on the cabin's hypergravity multiple; the greater the hypergravity multiple, the higher the spray pressure of the air curtain nozzles. In the initial stage, the controller executes fire extinguishing mode two. Under the premise of fire extinguishing mode one, the controller controls the rotating shaft to rotate in the forward direction. The high-density counterweight component relies on gravity to drive the flexible flame-retardant composite material layer downward and cover the lower surface of the cabin's inner sidewall. At the same time, the controller opens the jet nozzles to launch carbon dioxide and extinguishing agent into the cabin in a parallel jet pattern. The greater the hypergravity multiple, the higher the spray pressure of the jet nozzles. During the development stage, the controller executes fire extinguishing mode three. Under the premise of fire extinguishing mode two, the controller controls the jet nozzles to launch carbon dioxide and extinguishing agent into the cabin in a dispersed jet pattern.

[0015] Furthermore, when it is detected that there is no open flame inside the cabin, the cabin temperature is lower than the preset temperature, and the smoke particle concentration is lower than the preset smoke particle concentration and maintained for a preset time, it is determined that the fire is extinguished, the air curtain nozzle and the jet nozzle are closed, and the rotating shaft is rotated in the opposite direction to move the high specific gravity counterweight component and the flexible flame-retardant composite material layer upward until the high specific gravity counterweight component approaches the guide groove.

[0016] The present invention discloses the following technical effects: 1. This invention couples an acceleration sensor with a fire extinguishing system. The controller can control the fire extinguishing system based on the hypergravity multiple of the cabin, especially adjusting the spray pressure of the air curtain nozzle and the jet nozzle, so that the fire extinguishing system can adapt to the hypergravity environment and avoid the technical problems of inaccurate initial fire detection, delayed response and low fire extinguishing efficiency in hypergravity environment.

[0017] 2. This invention comprises a "three-level synergistic" fire extinguishing system, namely an air curtain mechanism, a flame-retardant barrier mechanism, and a directional jet mechanism. The fire extinguishing system is coupled with multiple sensors, such as acceleration sensors and temperature sensors, enabling early warning, precise classification, and fire source location in hypergravity environments. Furthermore, the "three-level synergistic" fire extinguishing system achieves a fire prevention and control effect of "flow field isolation - physical isolation - precise fire extinguishing." The jet nozzles can switch between different spray modes according to the fire level, and both the air curtain nozzle pressure and the jet nozzle pressure can be adaptively adjusted according to the hypergravity factor, effectively solving the problems of poor extinguishing agent diffusion and low fire extinguishing efficiency in hypergravity environments, enabling rapid and thorough extinguishing of open flames.

[0018] 3. This invention continuously monitors after the open flame is extinguished. When it detects that there is no open flame inside the chamber, the chamber temperature is lower than the preset temperature, and the smoke particle concentration is lower than the preset smoke particle concentration and maintained for a preset time, it determines that the fire is extinguished, thus avoiding the problem of open flame reignition.

[0019] 4. This invention is not only applicable to aerospace hypergravity scenarios such as spacecraft cabins and aerospace centrifuge simulation platforms, but can also be widely applied to industrial hypergravity equipment such as hypergravity test devices and rotating bed reactors. It has strong engineering application value and promotion prospects, and can provide key technical support for fire safety protection in various hypergravity special environments. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the present invention installed on a spacecraft hypergravity simulation test device; Figure 3 This is a schematic diagram of a flame-retardant barrier mechanism; Figure 4 This is a schematic diagram of an air curtain mechanism; Figure 5 This is a schematic diagram of a directional jet mechanism; The components include: 1. Centrifuge body; 2. Chamber; 3. Rotating arm; 4. Basket; 5. Counterweight; 6. Accelerometer; 7. Smoke detector; 8. Temperature sensor; 9. Flame image detector; 10. Lateral support frame; 11. Controller; 12. Air duct; 13. Air curtain nozzle; 14. Air curtain inlet pipe; 15. Guide rail; 16. Rotating shaft; 17. Flexible flame-retardant composite material layer; 18. High specific gravity counterweight assembly; 19. Extinguishing agent storage chamber; 20. Jet inlet pipe; 21. Jet nozzle. Detailed Implementation

[0022] Among the existing technologies retrieved: Patents CN121477651A (A Method and System for Intelligent Prevention and Control and Operation and Maintenance Optimization of Fires in Power Supply Networks), CN116153011A (A Fire Monitoring Method and Device), CN119129462A (A Method for Evaluating the Smoke-Blocking Performance of an Air Curtain in a Bifurcation Tunnel), and CN120437522A (A Water Curtain and Flame-Retardant Curtain Synergistic Smoke-Blocking and Heat-Insulating Device and Fire Prevention Method) all focus on fire prevention and control under constant gravity environments, and their inventions involve fire prevention and control systems and related evaluation methods. Patent CN116153011A focuses on determining the location of a fire by acquiring and identifying images of the target location using a camera. CN121477651A focuses on real-time acquisition of temperature, humidity, and smoke concentration data to obtain initial fire signals and perform response and optimization evaluation. CN119129462A focuses on methods for evaluating the smoke-blocking performance of air curtains. CN120437522A focuses on the research of a smoke-blocking and heat-insulating device that combines water curtain and flame-retardant curtain, as well as corresponding fire prevention and control methods, which uses intelligent linkage control of detectors to block the spread of fire.

[0023] As can be seen from the above, the existing technologies all study fire prevention and control methods under normal gravity environments, and do not involve fire prevention and control in special hypergravity environments, which cannot meet the actual needs of extreme fields such as aerospace.

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Those skilled in the art will understand that the term "comprising" as used in this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements present. Furthermore, "connected" or "coupled" as used herein can include wireless connections or wireless coupling. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0026] like Figures 1 to 5 As shown, in order to make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1 This invention provides a fire prevention and control system for hypergravity environments, comprising: The cabin 2 has an external accelerometer 6 and an internal smoke detector 7, temperature sensor 8, and flame image detector 9. The accelerometer 6 is used to detect the hypergravity multiple of the cabin 2, the smoke detector 7 is used to detect the concentration of smoke particles inside the cabin 2, the temperature sensor 8 is used to detect the temperature of the cabin 2, and the flame image detector 9 is used to acquire open flame images and determine the fire location and flame area. The fire extinguishing system is installed inside the cabin 2 and electrically connected to the controller 11. The controller 11 controls the fire extinguishing system to extinguish fire and / or alarm based on the detection data of the acceleration sensor 6, the smoke detector 7, the temperature sensor 8 and the flame image detector 9. This embodiment applies to a spacecraft hypergravity simulation test device. Specifically, the test device includes a centrifuge body 1, a rotating arm 3 located at the rotating end of the centrifuge body 1, and two baskets 4 located at both ends of the rotating arm 3. A counterweight 5 is arranged on one basket 4, and the cabin 2 and fire extinguishing system disclosed in this embodiment are installed on the other basket 4. Hypergravity environments with different hypergravity ratios can be simulated by rotating the centrifuge body 1. An acceleration sensor 6 can also be arranged on the basket 4 to detect the hypergravity ratio at a sampling frequency of not less than 10Hz.

[0028] In this embodiment, the fire extinguishing system includes an air curtain mechanism, which includes: The air duct 12 is arranged in a ring below the top surface of the cabin 2. The air duct 12 is connected to the air curtain inlet pipe 14, which is used to deliver carbon dioxide to the air duct 12. Multiple air curtain nozzles 13 are provided on the lower surface of the air duct 12. The air curtain nozzles 13 are electrically connected to the controller 11.

[0029] In this embodiment, the fire extinguishing system further includes a flame-retardant barrier mechanism, which includes: The guide rail 15 is arranged in a ring on the inner wall of the cabin 2, and a cavity is defined inside it, and a guide groove communicating with the cavity is defined at the bottom. A rotating shaft 16 is rotatably disposed in a cavity. A flexible flame-retardant composite material layer 17 is wound around the rotating shaft 16, and the inner end of the flexible flame-retardant composite material layer 17 is connected to the rotating shaft 16. The rotating shaft 16 is driven to rotate by a drive mechanism, and the drive mechanism is electrically connected to the controller 11. The outer end of the high-density counterweight component 18 and the flexible flame-retardant composite material layer 17 extends downward from the guide groove and is connected to the high-density counterweight component 18. When the rotating shaft 16 rotates in the forward direction, the high-density counterweight component 18 drives the flexible flame-retardant composite material layer 17 to move downward by gravity and cover the lower section surface of the inner wall of the cabin 2. When the rotating shaft 16 rotates in the reverse direction, the high-density counterweight component 18 and the flexible flame-retardant composite material layer 17 move upward until the high-density counterweight component 18 approaches the guide groove.

[0030] When the flexible flame-retardant composite material layer 17 covers the lower section of the inner wall of the cabin 2, it can block the flame and prevent the flame from spreading upward along the inner surface of the cabin 2.

[0031] In this embodiment, the fire extinguishing system further includes a directional jet mechanism, which includes: The fire extinguishing agent storage chamber 19 has a jet nozzle 21 connected to its bottom and a jet air inlet pipe 20 connected to its top. The jet air inlet pipe 20 is used to deliver carbon dioxide to the fire extinguishing agent storage chamber 19. The fire extinguishing agent storage chamber 19 stores fire extinguishing agent. The fire extinguishing agent is mixed with carbon dioxide and then sprayed out from the jet nozzle 21. The jet nozzle 21 has a parallel jet mode and a dispersed jet mode. The jet nozzle 21 is electrically connected to the controller 11, and the controller 11 controls the opening and closing of the jet nozzle 21 and the switching between the parallel jet mode and the dispersed jet mode. In this embodiment, the jet nozzle 21 can adjust the jet angle. The specific jet angle can be adjusted by the controller 11. The jet angle adjustment structure of the jet nozzle 21 can adopt existing technology, which will not be described in detail here.

[0032] In this embodiment, a pressure regulator (or other pressure-regulating mechanism) is provided in both the jet nozzle 21 and the air curtain nozzle 13. The controller 11 is connected to the pressure regulator, and the controller 11 controls the pressure regulator to adjust the pressure of the jet nozzle 21 and the air curtain nozzle 13.

[0033] In this embodiment, a transverse support frame 10 is provided on the inner wall of the cabin 2, and the smoke detector 7 and temperature sensor 8 can be installed at any position inside the transverse slide rail.

[0034] This invention also provides a method for extinguishing fires in hypergravity environments, utilizing a hypergravity environment fire prevention and control system, comprising the following steps: The acceleration sensor 6 detects the hypergravity multiple of the cabin 2, the smoke detector 7 detects the smoke particle concentration inside the cabin 2, the temperature sensor 8 detects the temperature of the cabin 2, and the flame image detector 9 collects open flame images and determines the fire location and flame area. The controller 11 obtains the temperature rise rate based on the temperature of the cabin 2, and classifies the fire level into warning period, initial stage and development stage based on the temperature rise rate, cabin 2 temperature, open flame status and smoke particle concentration. The controller 11 controls the air curtain nozzle 13, the rotating shaft 16 and the jet nozzle 21 respectively according to the hypergravity multiple of the cabin 2 and the fire level.

[0035] In this embodiment, the fire level classification is based on: Warning period: Temperature rise rate > 5℃ / s, no open flame, temperature of cabin 2 is greater than preset temperature and / or smoke particle concentration is greater than preset smoke particle concentration; Initial stage: There is an open flame, the flame area is less than or equal to the preset flame area, the temperature of compartment 2 is greater than the preset temperature and / or the smoke particle concentration is greater than the preset smoke particle concentration; Development stage: There is an open flame, the flame area is larger than the preset flame area, the temperature of cabin 2 is greater than the preset temperature and / or the smoke particle concentration is greater than the preset smoke particle concentration.

[0036] In this embodiment, an alarm is also included, which is connected to the controller 11 and can issue different alarm signals according to different fire levels.

[0037] In this embodiment, during the warning period, the controller 11 executes fire extinguishing mode one, controlling the opening of the air curtain nozzle 13 according to the hypergravity multiple of the cabin 2. The greater the hypergravity multiple, the higher the spray pressure of the air curtain nozzle 13. In the initial stage, the controller 11 executes fire extinguishing mode two. Under the premise of fire extinguishing mode one, the controller 11 controls the rotating shaft 16 to rotate in the forward direction. The high specific gravity counterweight component 18 relies on gravity to drive the flexible flame-retardant composite material layer 17 to move downward and cover the lower surface of the inner wall of the cabin 2. At the same time, the controller 11 opens the jet nozzle 21 to emit carbon dioxide and fire extinguishing agent into the cabin 2 in a parallel jet pattern. The greater the hypergravity multiple, the higher the spray pressure of the jet nozzle 21. During the development period, the controller 11 executes fire extinguishing mode three. Under the premise of fire extinguishing mode two, the controller 11 controls the jet nozzle 21 to emit carbon dioxide and fire extinguishing agent into the cabin 2 in a dispersed jet pattern.

[0038] It should be noted that in the initial stage, when the flames are relatively concentrated and the flame image detector 9 has already acquired images of the open flames and determined the location of the fire, the jet nozzle 21 can be adjusted to an angle corresponding to the fire location. Then, carbon dioxide and extinguishing agent can be sprayed onto the flames in a parallel jet pattern, allowing for precise and rapid extinguishing of the open flames. In the development stage, when the flames have spread, using a dispersed jet pattern helps to expand the coverage area of ​​the extinguishing agent, effectively suppressing further spread of the fire and extinguishing it.

[0039] In this embodiment, when it is detected that there is no open flame in the cabin 2, the temperature of the cabin 2 is lower than the preset temperature, the smoke particle concentration is lower than the preset smoke particle concentration and is maintained for a preset time, it is determined that the fire is extinguished, the air curtain nozzle 13 and the jet nozzle 21 are closed, and the rotating shaft 16 is rotated in the opposite direction to move the high specific gravity counterweight component 18 and the flexible flame-retardant composite material layer 17 upward until the high specific gravity counterweight component 18 approaches the guide groove.

[0040] In this embodiment, the controller 11 is equipped with image processing software that can perform image processing operations such as filtering, noise reduction, and magnification. It also stores a flame area model, so it can determine the flame area based on the open flame image collected by the flame image detector 9.

[0041] Example 2 The difference between this embodiment and Embodiment 1 is that the cabin 2 is coupled to an industrial high-gravity rotating bed.

[0042] 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," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A fire prevention and control system for hypergravity environments, characterized in that, include: The cabin (2) has an external accelerometer (6), an internal smoke detector (7), a temperature sensor (8), and a flame image detector (9). The accelerometer (6) is used to detect the hypergravity multiple of the cabin (2), the smoke detector (7) is used to detect the concentration of smoke particles inside the cabin (2), the temperature sensor (8) is used to detect the temperature of the cabin (2), and the flame image detector (9) is used to collect open flame images and determine the fire location and flame area. The fire extinguishing system is installed inside the cabin (2) and electrically connected to the controller (11). The controller (11) controls the fire extinguishing system to extinguish fire and / or alarm based on the detection data of the acceleration sensor (6), smoke detector (7), temperature sensor (8) and flame image detector (9).

2. The fire prevention and control system for hypergravity environments according to claim 1, characterized in that, The fire extinguishing system includes an air curtain mechanism, which includes: An air duct (12) is arranged in a ring below the top surface of the cabin (2). The air duct (12) is connected to the air curtain inlet pipe (14). The air curtain inlet pipe (14) is used to deliver carbon dioxide to the air duct (12). Multiple air curtain nozzles (13) are provided on the lower surface of the air duct (12). The air curtain nozzles (13) are electrically connected to the controller (11).

3. A fire prevention and control system for hypergravity environments according to claim 2, characterized in that, The fire extinguishing system further includes a flame-retardant barrier mechanism, which comprises: The guide rail (15) is arranged in a ring on the inner wall of the cabin (2), with a cavity defined inside and a guide groove communicating with the cavity at the bottom. A rotating shaft (16) is rotatably disposed in a cavity. A flexible flame-retardant composite material layer (17) is wound around the rotating shaft (16) and the inner end of the flexible flame-retardant composite material layer (17) is connected to the rotating shaft (16). The rotating shaft (16) is driven to rotate by a drive mechanism, and the drive mechanism is electrically connected to the controller (11). The high-density counterweight assembly (18) has the outer end of the flexible flame-retardant composite material layer (17) extending downward from the guide groove and connected to the high-density counterweight assembly (18). When the rotating shaft (16) rotates in the forward direction, the high-density counterweight assembly (18) moves the flexible flame-retardant composite material layer (17) downward by gravity and covers the lower surface of the inner wall of the cabin (2). When the rotating shaft (16) rotates in the reverse direction, the high-density counterweight assembly (18) and the flexible flame-retardant composite material layer (17) move upward until the high-density counterweight assembly (18) approaches the guide groove.

4. A fire prevention and control system for hypergravity environments according to claim 3, characterized in that, The fire extinguishing system further includes a directional jet mechanism, which comprises: The fire extinguishing agent storage chamber (19) has a jet nozzle (21) connected to its bottom and a jet air inlet pipe (20) connected to its top. The jet air inlet pipe (20) is used to deliver carbon dioxide to the fire extinguishing agent storage chamber (19). The fire extinguishing agent is stored in the fire extinguishing agent storage chamber (19). The fire extinguishing agent is mixed with carbon dioxide and then sprayed out from the jet nozzle (21). The jet nozzle (21) has a parallel jet mode and a dispersed jet mode. The jet nozzle (21) is electrically connected to the controller (11). The controller (11) controls the opening and closing of the jet nozzle (21) and the switching between the parallel jet mode and the dispersed jet mode.

5. A fire prevention and control system for hypergravity environments according to claim 4, characterized in that, A transverse support frame (10) is provided on the inner wall of the cabin (2), and the smoke detector (7) and temperature sensor (8) can be installed at any position inside the transverse slide rail.

6. A method for extinguishing fires in hypergravity environments, characterized in that, The application of the hypergravity environment fire prevention and control system according to claim 4 or 5 includes the following steps: The acceleration sensor (6) detects the hypergravity multiple of the cabin (2), the smoke detector (7) detects the smoke particle concentration in the cabin (2), the temperature sensor (8) is used to detect the temperature of the cabin (2), and the flame image detector (9) is used to collect open flame images and determine the fire location and flame area. The controller (11) obtains the temperature rise rate according to the temperature of the cabin (2), and divides the fire level into warning period, initial stage and development stage according to the temperature rise rate, cabin (2) temperature, open flame status and smoke particle concentration. The controller (11) controls the air curtain nozzle (13), the rotating shaft (16) and the jet nozzle (21) respectively according to the hypergravity multiple of the cabin (2) and the fire level.

7. A method for extinguishing fires in a hypergravity environment according to claim 6, characterized in that, The basis for classifying fire severity levels is: Warning period: Temperature rise rate > 5℃ / s, no open flame, cabin (2) temperature greater than preset temperature and / or smoke particle concentration greater than preset smoke particle concentration; Initial stage: There is an open flame, the flame area is less than or equal to the preset flame area, the temperature of the cabin (2) is greater than the preset temperature and / or the smoke particle concentration is greater than the preset smoke particle concentration; Development stage: There is an open flame, the flame area is greater than the preset flame area, the temperature of the cabin (2) is greater than the preset temperature and / or the smoke particle concentration is greater than the preset smoke particle concentration.

8. A method for extinguishing fires in a hypergravity environment according to claim 7, characterized in that, It also includes an alarm, which is connected to the controller (11) and can issue different alarm signals according to different fire levels.

9. A method for extinguishing fires in a hypergravity environment according to claim 7, characterized in that, During the warning period, the controller (11) executes fire extinguishing mode one, controlling the air curtain nozzle (13) to open according to the hypergravity multiple of the cabin (2). The greater the hypergravity multiple, the higher the spray pressure of the air curtain nozzle (13). In the initial stage, the controller (11) executes fire extinguishing mode two. Under the premise of fire extinguishing mode one, the controller (11) controls the rotating shaft (16) to rotate in the forward direction. The high specific gravity counterweight component (18) relies on gravity to drive the flexible flame-retardant composite material layer (17) to move downward and cover the cabin. The lower section of the inner wall of the cabin (2) is simultaneously opened by the controller (11) to launch carbon dioxide and extinguishing agent into the cabin (2) in a parallel jet pattern. The greater the supergravity multiple, the higher the spray pressure of the jet nozzle (21). During the development period, the controller (11) executes the third fire extinguishing mode. Under the premise of the second fire extinguishing mode, the controller (11) controls the jet nozzle (21) to launch carbon dioxide and extinguishing agent into the cabin (2) in a dispersed jet pattern.

10. A method for extinguishing fires in a hypergravity environment according to claim 7, characterized in that, When it is detected that there is no open flame in the cabin (2), the temperature of the cabin (2) is lower than the preset temperature, the smoke particle concentration is lower than the preset smoke particle concentration and is maintained for a preset time, it is determined that the fire is extinguished, the air curtain nozzle (13) and the jet nozzle (21) are closed, and the rotating shaft (16) is rotated in the opposite direction to move the high specific gravity counterweight component (18) and the flexible flame retardant composite material layer (17) upward until the high specific gravity counterweight component (18) approaches the guide groove.

Images