Solid-liquid fuel mixed supply system for rocket engine

Abstract

The invention discloses a solid-liquid fuel mixed supply system for a rocket engine, and belongs to the field of rocket engines. A solid-liquid fuel mixed supply system for a rocket engine comprises a fuel supply unit, a combustion control unit and a safety protection unit. The problems that in the prior art, the mixing efficiency is low and the mixing effect is poor are solved, limitation of a single supply mode is avoided through the extrusion type liquid oxidizing agent supply mode and the pumping pressure type liquid oxidizing agent supply mode, the internal structure of the fuel grain is arranged and preheated, and the multi-stage mixing combustion chamber is adopted; the mixing efficiency and the combustion uniformity can be improved, the combustion control unit can adjust the combustion state in time by monitoring the pressure, the temperature and the liquid oxidizing agent supply amount in the combustion chamber in real time, and the safety protection unit can adjust the combustion state in time by monitoring potential dangerous conditions such as fuel leakage, fire disasters and explosions in real time. Supply of fuel and an oxidizing agent can be cut off rapidly under the abnormal condition, and accidents are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of rocket engines, and particularly to a solid-liquid fuel hybrid supply system for a rocket engine. Background Art

[0002] Solid rocket engines have a simple structure and a fast response speed, but have a low specific impulse, are difficult to adjust thrust and re-ignite, and have poor safety. Liquid rocket engines have a high specific impulse and adjustable thrust, but are complex in structure and high in cost. To overcome these limitations, solid-liquid hybrid rocket engines have emerged.

[0003] Solid-liquid hybrid rocket engines combine the advantages of solid and liquid rocket engines and adopt a propellant combination of solid fuel and liquid oxidizer. Such engines have a relatively high theoretical specific impulse, a relatively simple structure, and only one oxidizer supply pipeline, reducing the complexity of the system. By controlling the opening of the oxidizer supply valve, thrust adjustment can be achieved, and at the same time, the ability of repeated ignition is available.

[0004] However, in practical applications, solid-liquid hybrid rocket engines may have problems of low mixing efficiency and poor mixing effect between liquid oxidizer and solid fuel; therefore, they do not meet the existing requirements, and for this reason, we propose a solid-liquid fuel hybrid supply system for a rocket engine. Summary of the Invention

[0005] The purpose of the present invention is to provide a solid-liquid fuel hybrid supply system for a rocket engine. By optimizing the fuel grain structure, adopting a multi-stage mixing combustion chamber, a flexible oxidizer supply method, and precise combustion control and safety protection measures, the performance and reliability of the solid-liquid hybrid rocket engine are comprehensively improved, and the problems raised in the above background art are solved.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A solid-liquid fuel hybrid supply system for a rocket engine, the system includes a fuel supply unit, a combustion control unit, and a safety protection unit;

[0007] The fuel supply unit is configured to adopt two supply methods, namely, an extrusion type and a pump pressure type, to inject liquid oxidizer onto the surface of the fuel grain in the combustion chamber, and the combustion chamber is designed as a multi-stage mixing combustion chamber;

[0008] The combustion control unit is configured to monitor the combustion state in the combustion chamber in real time and adjust the pressure, temperature, and supply amount of liquid oxidizer in the combustion chamber according to the monitoring data;

[0009] The safety protection unit is configured to monitor the potential dangerous situations of fuel leakage, fire, and explosion in real time and issue an alarm signal in time. Once an abnormal situation is detected, the supply of fuel and oxidizer is quickly cut off.

[0010] Furthermore, multiple spiral channels or honeycomb-shaped holes are arranged inside the fuel grain to increase the contact area between the fuel and the liquid oxidizer.

[0011] Furthermore, before the liquid oxidizer is injected into the combustion chamber, the fuel grain in the combustion chamber is preheated to a suitable temperature range through preheating treatment, where the preheating temperature is between 250°C and 350°C.

[0012] Furthermore, the liquid oxidizer adopts two supply methods, namely the extrusion type and the pump pressure type, and is switched according to the working state of the rocket engine. The extrusion type supply pressurizes the oxidizer tank through high-pressure gas to make the liquid oxidizer quickly enter the combustion chamber, and the pump pressure type supply transports the liquid oxidizer to the combustion chamber with stable pressure and flow rate through a turbopump.

[0013] Furthermore, the multi-stage mixing combustion chamber is divided into a primary combustion chamber and a secondary combustion chamber. The primary combustion chamber is used for the preliminary mixing and combustion of the liquid oxidizer, and the secondary combustion chamber uses a vortex generator to strengthen the mixing effect of the fuel and the liquid oxidizer.

[0014] Furthermore, the combustion control unit includes:

[0015] A data monitoring module configured to deploy a variety of sensors to monitor the parameters of the pressure, temperature, and liquid oxidizer supply amount in the combustion chamber in real time, and obtain the monitoring data on the combustion state of the combustion chamber. Among them, the sensors include a pressure sensor, a temperature sensor, and a fuel flow sensor;

[0016] A data analysis module configured to compare and analyze the actual measured values of the monitoring data with the preset target values. Once the analysis result shows an abnormality, a control instruction is sent to the combustion adjustment module;

[0017] A combustion adjustment module configured to automatically adjust the pressure, temperature, and liquid oxidizer supply amount in the combustion chamber based on the control instruction issued by the data analysis module by using a PID controller.

[0018] Furthermore, the data analysis module includes:

[0019] A target value setting module configured to preset the target values of the pressure, temperature, and liquid oxidizer supply amount in the combustion chamber according to the design parameters of the combustion chamber, the fuel characteristics, and the performance requirements of the engine;

[0020] A deviation analysis module configured to compare and analyze the actual measured values of the pressure, temperature, and liquid oxidizer supply amount monitored in real time with the preset target values to determine whether the actual measured values of each parameter are within the allowable range of the target values;

[0021] Anomaly diagnosis module, configured to generate corresponding control instructions and issue them once it is found that the actual measured value of a certain parameter exceeds the allowable range of the target value based on the analysis result of the deviation analysis module.

[0022] Further, generating corresponding control instructions specifically includes:

[0023] If the pressure exceeds the allowable range of the target value, immediately generate a control instruction for pressure adjustment;

[0024] If the temperature exceeds the allowable range of the target value, immediately generate a control instruction for temperature adjustment;

[0025] If the supply amount of liquid oxidant exceeds the allowable range of the target value, immediately generate a control instruction for adjusting the supply amount of liquid oxidant.

[0026] Further, the combustion adjustment module includes:

[0027] An automatic adjustment module, configured to design independent PID controllers for the three controlled parameters of the pressure, temperature, and supply amount of liquid oxidant in the combustion chamber respectively. The PID controller automatically adjusts the pressure, temperature, and supply amount of liquid oxidant in the combustion chamber according to the deviation between the target value and the actual measured value;

[0028] An execution feedback module, configured to feedback the adjustment operation and the combustion state of the combustion chamber after adjustment to the staff at the monitoring end after the automatic adjustment module executes the adjustment.

[0029] Further, the safety protection unit includes:

[0030] A fault detection module, configured to deploy a variety of sensors to monitor potential dangerous situations such as fuel leakage, fire, and explosion in real time, and issue an alarm signal in a timely manner when an anomaly is detected;

[0031] An emergency protection module, configured to quickly cut off the supply of fuel and liquid oxidant when the fault detection module detects an anomaly, and at the same time set up multiple protection mechanisms, including safety valves, explosion-proof devices, and fire extinguishing systems, to take timely measures in case of abnormal situations.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] 1. The fuel supply unit of the present invention adopts two supply methods, namely, the extrusion type and the pump pressure type, to inject liquid oxidant onto the surface of the fuel grain in the combustion chamber, avoiding the limitations of a single supply method under different working conditions. By arranging multiple spiral channels or honeycomb holes inside the fuel grain, the contact area between the fuel and the liquid oxidant can be increased, thereby improving the mixing efficiency. Before the liquid oxidant is injected into the combustion chamber, the fuel grain is preheated to avoid incomplete or unstable combustion caused by too low temperature. The multi-stage mixing combustion chamber with a primary combustion chamber and a secondary combustion chamber can further improve the mixing efficiency and the uniformity of combustion.

[0034] 2. The combustion control unit of the present invention generates control instructions once abnormal conditions are detected by real-time monitoring of the pressure, temperature and liquid oxidant supply in the combustion chamber, and automatically adjusts the above parameters by using a PID controller, so as to timely adjust the combustion state and avoid problems such as unstable combustion or flameout. The safety protection unit monitors potential dangerous situations such as fuel leakage, fire and explosion in real time, and quickly issues an alarm signal when an abnormality is detected, and can quickly cut off the supply of fuel and oxidant under abnormal conditions, and at the same time start a multiple protection mechanism to effectively avoid the occurrence of accidents. Description of the Drawings

[0035] Figure 1 It is the overall structure diagram of the solid-liquid fuel hybrid supply system for a rocket engine of the present invention. Detailed Embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] In order to solve the technical problems that in the actual application of existing solid-liquid hybrid rocket engines, there may be low mixing efficiency and poor mixing effect between liquid oxidant and solid fuel, please refer to Figure 1 , the following technical solutions are provided in this embodiment:

[0038] A solid-liquid fuel hybrid supply system for a rocket engine, the system includes a fuel supply unit, a combustion control unit and a safety protection unit;

[0039] The fuel supply unit is configured to adopt two supply methods, namely, the extrusion type and the pump pressure type, to inject liquid oxidant onto the surface of the fuel grain in the combustion chamber, and the combustion chamber is designed as a multi-stage mixing combustion chamber;

[0040] The combustion control unit is configured to monitor the combustion state in the combustion chamber in real time and adjust the pressure, temperature, and supply amount of liquid oxidant in the combustion chamber according to the monitoring data;

[0041] The safety protection unit is configured to monitor the potential dangerous situations of fuel leakage, fire, and explosion in real time, issue an alarm signal in a timely manner, and quickly cut off the supply of fuel and oxidant once an abnormal situation is detected.

[0042] The technical effects of the above are as follows: The fuel supply unit adopts two supply methods, namely the extrusion type and the pump pressure type. This combination increases the redundancy of the system. Even if one supply method fails, the other can still continue to work, ensuring that the liquid oxidant can be continuously and stably injected into the combustion chamber, improving the reliability of the system under complex working conditions. And through the multi-stage mixing combustion chamber, the liquid oxidant can contact the surface of the solid fuel grain more evenly, making the mixing of fuel and oxidant more sufficient. The combustion control unit can monitor the combustion state in the combustion chamber in real time and accurately adjust the pressure, temperature, and supply amount of liquid oxidant in the combustion chamber according to the monitoring data, which can ensure that the combustion process is always in the best state and avoid thrust loss caused by incomplete combustion or excessive combustion. The safety protection unit monitors potential dangerous situations such as fuel leakage, fire, and explosion in real time and issues an alarm signal in a timely manner. Through the active monitoring and early warning mechanism, it can quickly remind the operator to take measures at the initial stage of the danger and reduce the probability of accidents.

[0043] The fuel grain is provided with multiple spiral channels or honeycomb holes inside to increase the contact area between the fuel and the liquid oxidant.

[0044] The technical effects of the above are as follows: The design of the spiral channels or honeycomb holes significantly increases the contact area between the fuel and the liquid oxidant, enabling the liquid oxidant to penetrate more evenly into the fuel grain, promoting the combustion reaction of the fuel, thereby improving the combustion efficiency. And this evenly distributed liquid oxidant can ensure the stability of the combustion process and avoid problems such as local incomplete combustion or excessive combustion.

[0045] Before the liquid oxidant is injected into the combustion chamber, the fuel grain in the combustion chamber is preheated to a suitable temperature range through the preheating treatment, where the preheating temperature is between 250°C and 350°C.

[0046] The technical effects of the above content are as follows: The fuel grain is preheated. When the preheated fuel grain comes into contact with the liquid oxidizer, the combustion reaction rate increases, the energy can be released more rapidly, the combustion efficiency is improved, and the preheating treatment makes the fuel grain burn more evenly during the whole combustion process, reducing the temperature and pressure fluctuations in the combustion chamber and improving the stability of the combustion process. Based on the preheating treatment, the combustion efficiency can be significantly improved and the combustion stability can be enhanced.

[0047] The liquid oxidizer adopts two supply methods, namely the extrusion type and the pump pressure type, and is switched according to the working state of the rocket engine. The extrusion type supply pressurizes the oxidizer storage tank through high-pressure gas to quickly introduce the liquid oxidizer into the combustion chamber. The pump pressure type supply transports the liquid oxidizer to the combustion chamber with a stable pressure and flow rate through a turbopump.

[0048] The technical effects of the above content are as follows: The extrusion type supply can quickly transport a large amount of oxidizer in a short time to ensure sufficient oxidizer supply in the combustion chamber and avoid incomplete combustion caused by insufficient oxidizer. The pump pressure type supply realizes stable flow and pressure control through a turbopump to ensure more uniform mixing of the oxidizer and the fuel, thereby improving the combustion efficiency. The extrusion type supply can quickly transport the oxidizer when the rocket engine starts, enabling the rocket engine to quickly reach the working state. When rapid thrust adjustment is required, switching to the extrusion type supply can quickly change the flow rate of the liquid oxidizer, thereby achieving rapid thrust change and improving the dynamic response performance of the rocket engine. The adoption of the two supply methods increases the redundancy of the system and significantly improves the adaptability, combustion efficiency, reliability, and safety of the rocket engine.

[0049] The multi-stage mixing combustion chamber is divided into a primary combustion chamber and a secondary combustion chamber. The primary combustion chamber is used for the preliminary mixing and combustion of the liquid oxidizer, and the secondary combustion chamber uses a vortex generator to enhance the mixing effect of the fuel and the liquid oxidizer.

[0050] The technical effects of the above content are as follows: The primary combustion chamber is responsible for the preliminary mixing and combustion of the liquid oxidizer, which can quickly start the combustion process and provide basic combustion stability. The secondary combustion chamber further enhances the mixing effect of the fuel and the liquid oxidizer through a vortex generator, making the combustion more complete. The design of the multi-stage mixing combustion chamber significantly improves the combustion efficiency, reduces pollutant emissions, improves the performance of the combustion chamber, and enhances the reliability of the system through staged mixing and combustion, optimizing fuel distribution, and enhancing the mixing effect.

[0051] The combustion control unit includes:

[0052] The data monitoring module is configured to deploy multiple sensors to monitor in real time the parameters of the pressure, temperature, and liquid oxidant supply in the combustion chamber, and obtain the monitoring data on the combustion state of the combustion chamber. Among them, the sensors include a pressure sensor, a temperature sensor, and a fuel flow sensor;

[0053] The data analysis module is configured to compare and analyze the actual measured values of the monitoring data with the preset target values. Once the analysis result shows an abnormality, a control instruction is sent to the combustion adjustment module;

[0054] The combustion adjustment module is configured to automatically adjust the pressure, temperature, and liquid oxidant supply in the combustion chamber by using a PID controller based on the control instruction issued by the data analysis module.

[0055] The technical effects of the above content are as follows: The data monitoring module can timely obtain accurate information on the combustion state by deploying multiple sensors to monitor in real time the parameters such as the pressure, temperature, and liquid oxidant supply in the combustion chamber. The data analysis module compares and analyzes the actual measured values of these monitoring data with the preset target values. The data analysis module can quickly identify abnormal changes in the combustion state and timely send a control instruction to the combustion adjustment module. The combustion adjustment module uses a PID controller to achieve fast and accurate parameter adjustment, effectively suppressing fluctuations during the combustion process, maintaining stable combustion in the combustion chamber, and ensuring that the combustion process is always in the best state.

[0056] In summary, the combustion control unit realizes precise control of the combustion process through real-time monitoring, data analysis, and automatic adjustment, and can significantly improve the combustion efficiency and enhance the combustion stability.

[0057] The data analysis module includes:

[0058] The target value setting module is configured to preset the target values of the pressure, temperature, and liquid oxidant supply in the combustion chamber according to the design parameters of the combustion chamber, the fuel characteristics, and the performance requirements of the engine;

[0059] The deviation analysis module is configured to compare and analyze the actual measured values of the pressure, temperature, and liquid oxidant supply monitored in real time with the preset target values, and judge whether the actual measured values of each parameter are within the allowable range of the target value;

[0060] The abnormality diagnosis module is configured to generate and send a corresponding control instruction once it is found based on the analysis result of the deviation analysis module that the actual measured value of a certain parameter exceeds the allowable range of the target value. Specifically:

[0061] If the pressure exceeds the allowable range of the target value, immediately generate a control instruction for pressure adjustment;

[0062] If the temperature exceeds the allowable range of the target value, a control instruction for temperature adjustment is generated immediately;

[0063] If the supply amount of liquid oxidizer exceeds the allowable range of the target value, a control instruction for adjusting the supply amount of liquid oxidizer is generated immediately.

[0064] The technical effects of the above content are as follows: The target value setting module pre-sets the target value according to the design parameters of the combustion chamber, fuel characteristics, and engine performance requirements, ensuring that the parameter control of the combustion process has clear guidance and adaptability, providing a basis for optimizing the combustion efficiency. The deviation analysis module can compare and analyze the monitored actual measurement values with the pre-set target values in real time to determine whether each parameter is within the allowable range. Once a deviation is found, the abnormal diagnosis module immediately generates corresponding control instructions to achieve rapid adjustment of the combustion process. Through the real-time feedback and adjustment mechanism, it can ensure that the combustion process is always in the best state, reduce the situation of incomplete combustion or excessive combustion, thereby improving the combustion efficiency. The abnormal diagnosis module can quickly identify parameter abnormalities and generate corresponding control instructions. The data analysis module realizes precise monitoring and adjustment of the combustion process through functions such as target value setting, deviation analysis, and abnormal diagnosis, and can significantly improve the combustion efficiency, enhance the combustion stability and safety, and improve the performance and reliability of the rocket engine.

[0065] The combustion adjustment module includes:

[0066] The automatic adjustment module is configured to design independent PID controllers for the three controlled parameters of the pressure, temperature, and supply amount of liquid oxidizer in the combustion chamber. The PID controller automatically adjusts the pressure, temperature, and supply amount of liquid oxidizer in the combustion chamber according to the deviation between the target value and the actual measurement value;

[0067] The execution feedback module is configured to, after the automatic adjustment module executes the adjustment, feedback the adjustment operation and the combustion state of the combustion chamber after adjustment to the staff at the monitoring end.

[0068] The technical effects of the above content are as follows: The automatic adjustment module designs independent PID controllers for the three controlled parameters of the pressure, temperature, and supply amount of liquid oxidizer in the combustion chamber. The independent control method can accurately adjust according to the characteristics of each parameter, avoiding mutual interference between parameters. The PID controller automatically adjusts the corresponding parameter according to the deviation between the target value and the actual measurement value. The dynamic adjustment mechanism can effectively respond to various changes in the combustion process, ensuring the stability and efficiency of the combustion process. The execution feedback module, after the automatic adjustment module executes the adjustment, feedbacks the adjustment operation and the combustion state of the combustion chamber after adjustment to the staff at the monitoring end. The real-time feedback mechanism enables the staff to timely understand the changes in the combustion process and perform rapid intervention when necessary, further enhancing the safety of the system.

[0069] Safety protection unit, including:

[0070] Fault detection module, configured to deploy multiple sensors to monitor potential dangerous situations of fuel leakage, fire and explosion in real time, and when an abnormality is detected, promptly send an alarm signal;

[0071] Emergency protection module, configured to quickly cut off the supply of fuel and liquid oxidant when the fault detection module detects an abnormality, and at the same time set up multiple protection mechanisms, including safety valves, explosion-proof devices, and fire extinguishing systems, and take timely measures in case of abnormal situations.

[0072] The technical effects of the above are as follows: The fault detection module can monitor potential dangerous situations of fuel leakage, fire and explosion in real time by deploying multiple sensors, and when an abnormality is detected, immediately send an alarm signal, which can quickly remind the operator to take measures at the initial stage of danger and avoid the occurrence of accidents. When the emergency protection module detects an abnormality, it can quickly cut off the supply of fuel and liquid oxidant, effectively prevent the further deterioration of dangerous situations, reduce the fuel leakage amount, and reduce the risks of fire and explosion. At the same time, multiple safety protection mechanisms are set up to ensure that measures can be quickly taken in case of abnormalities to prevent the occurrence and expansion of accidents. By promptly cutting off the fuel supply and activating multiple protection mechanisms, the safety protection unit can effectively reduce the probability of accidents and the losses caused by accidents, and can also maximize the protection of equipment safety even in extreme cases.

[0073] Working principle: The fuel supply unit adopts two supply methods, extrusion type and pump pressure type, to ensure that the liquid oxidant can be continuously and stably injected into the combustion chamber. And through the multi-stage mixing combustion chamber, the liquid oxidant can contact the surface of the solid fuel grain more evenly, which can improve the mixing efficiency and combustion uniformity. The combustion control unit can monitor the combustion state in the combustion chamber in real time and accurately adjust the pressure, temperature and the supply amount of the liquid oxidant in the combustion chamber according to the monitoring data, which can ensure that the combustion process is always in the best state. The safety protection unit monitors potential dangerous situations such as fuel leakage, fire and explosion in real time and promptly sends an alarm signal, so as to quickly remind the operator to take measures at the initial stage of danger and reduce the probability of accidents.

[0074] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0075] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A solid-liquid fuel mixing supply system for a rocket engine, characterized in that: The system includes a fuel supply unit, a combustion control unit and a safety protection unit; The fuel supply unit is configured to use two supply modes, namely, extrusion type and pump pressure type, to spray the liquid oxidant into the surface of the fuel charge in the combustion chamber, and the combustion chamber is designed as a multi-stage mixing combustion chamber; The combustion control unit is configured to monitor the combustion state in the combustion chamber in real time and adjust the pressure, temperature and supply amount of the liquid oxidant in the combustion chamber according to the monitoring data; The safety protection unit is configured to monitor potential dangerous situations of fuel leakage, fire and explosion in real time, and issue alarm signals in time, and quickly cut off the supply of fuel and oxidant once an abnormal situation is detected.

2. A solid-liquid fuel mixed supply system for a rocket engine according to claim 1, characterized in that: The fuel charge is provided with a plurality of spiral channels or honeycomb holes inside to increase the contact area between the fuel and the liquid oxidant.

3. A solid-liquid fuel mixed supply system for a rocket engine according to claim 1, characterized in that: Before the liquid oxidant is injected into the combustion chamber, the fuel pellets in the combustion chamber are preheated to a suitable temperature range, wherein the preheating temperature is between 250°C and 350°C.

4. A solid-liquid fuel mixed supply system for a rocket engine according to claim 1, characterized in that: The liquid oxidizer is supplied in two ways: extrusion and pump pressure, and the supply is switched according to the working state of the rocket engine. The extrusion supply pressurizes the oxidizer tank through high-pressure gas to allow the liquid oxidizer to quickly enter the combustion chamber. The pump pressure supply delivers the liquid oxidizer to the combustion chamber at a stable pressure and flow rate through a turbopump.

5. A solid-liquid fuel mixed supply system for a rocket engine according to claim 1, characterized in that: The multi-stage mixing combustion chamber is divided into a primary combustion chamber and a secondary combustion chamber. The primary combustion chamber is used for preliminary mixing and combustion of the liquid oxidant, and the secondary combustion chamber uses a vortex generator to enhance the mixing effect of the fuel and the liquid oxidant.

6. A solid-liquid fuel mixed supply system for a rocket engine according to claim 1, characterized in that: The combustion control unit comprises: A data monitoring module is configured to deploy a variety of sensors to monitor the parameters of pressure, temperature and liquid oxidant supply in the combustion chamber in real time, and obtain monitoring data on the combustion state of the combustion chamber, wherein the sensors include a pressure sensor, a temperature sensor and a fuel flow sensor; The data analysis module is configured to compare and analyze the actual measured value of the monitoring data with the preset target value, and once the analysis result is abnormal, a control instruction is issued to the combustion adjustment module; The combustion adjustment module is configured to automatically adjust the pressure, temperature and liquid oxidant supply in the combustion chamber using a PID controller based on the control instructions issued by the data analysis module.

7. A solid-liquid fuel mixed supply system for a rocket engine according to claim 6, characterized in that: The data analysis module comprises: a target value setting module configured to pre-set target values ​​of pressure, temperature and liquid oxidant supply in the combustion chamber according to design parameters of the combustion chamber, fuel characteristics and performance requirements of the engine; A deviation analysis module is configured to compare and analyze the actual measured values ​​of the pressure, temperature and liquid oxidant supply monitored in real time with the preset target values ​​to determine whether the actual measured values ​​of each parameter are within the allowable range of the target value; The abnormality diagnosis module is configured to generate and issue a corresponding control instruction based on the analysis result of the deviation analysis module once it is found that the actual measurement value of a certain parameter exceeds the allowable range of the target value.

8. A solid-liquid fuel mixed supply system for a rocket engine according to claim 6, characterized in that: Generate corresponding control instructions, specifically: If the pressure exceeds the permissible range of the target value, a control instruction for pressure adjustment is immediately generated; If the temperature exceeds the allowable range of the target value, a control instruction for temperature adjustment is immediately generated; If the liquid oxidant supply amount exceeds the allowable range of the target value, a control instruction for adjusting the liquid oxidant supply amount is immediately generated.

9. A solid-liquid fuel mixed supply system for a rocket engine according to claim 6, characterized in that: The combustion adjustment module comprises: The automatic adjustment module is configured to design independent PID controllers for the three controlled parameters of pressure, temperature and liquid oxidant supply in the combustion chamber, respectively, and the PID controller automatically adjusts the pressure, temperature and liquid oxidant supply in the combustion chamber according to the deviation between the target value and the actual measured value; The execution feedback module is configured to feed back the adjustment operation and the combustion state of the combustion chamber after the adjustment is performed by the automatic adjustment module to the staff at the monitoring end.

10. A solid-liquid fuel mixed supply system for a rocket engine according to claim 1, characterized in that: The safety protection unit comprises: A fault detection module is configured to deploy a variety of sensors to monitor potential dangerous situations such as fuel leakage, fire and explosion in real time, and to issue an alarm signal in a timely manner when an abnormality is detected; The emergency protection module is configured to quickly cut off the supply of fuel and liquid oxidizer when the fault detection module detects an abnormality, and to set up multiple protection mechanisms, including safety valves, explosion-proof devices, and fire-extinguishing systems, so that timely measures can be taken when abnormal situations occur.

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