Hydrazine-free propelling system and satellite

Abstract

The invention discloses an anhydrous hydrazine propulsion system and a satellite, and relates to the field of satellite propulsion control, a control module in the system controls anhydrous hydrazine to flow to an electromagnetic valve after controlling the temperature of a catalyst to reach a preset reaction temperature through a first temperature control module when the system is in a working state; the control module is used for controlling opening and closing of the electromagnetic valve according to the target thrust so as to adjust the flow speed and flow of the anhydrous hydrazine, so that the anhydrous hydrazine flows into the second storage module to react with the catalyst to generate fuel gas, and the acceleration module is used for accelerating the fuel gas and then spraying the fuel gas, so that the sprayed gas generates thrust to reach the target thrust. According to the scheme, sufficient and efficient reaction of the catalyst and the anhydrous hydrazine is guaranteed through catalyst temperature control, thrust requirements required by different working conditions are met through opening and closing control over the electromagnetic valve according to target thrust, gas generated through reaction of the catalyst and the anhydrous hydrazine is essentially high-temperature and high-pressure gas, and then the gas is sprayed out after being treated by the acceleration module; sufficient thrust can be doubly ensured to be generated so as to flexibly adapt to various working condition requirements.

Description

Technical Field

[0001] The present invention relates to the field of satellite propulsion control technology, and in particular to an anhydrous hydrazine propulsion system and a satellite. Background Art

[0002] The propulsion system is an important power source for satellites. The thrust generated by the propulsion system can realize the satellite's orbit transfer, orbit maintenance, and attitude control. At present, the propulsion system used in satellites is mainly an electric propulsion system, which generates ions by ionizing propellants, such as xenon, and ejects these ions at high speed to generate thrust. However, in actual applications, the thrust generated by this method is relatively small and is not suitable for tasks that require large thrust, such as rapid orbit transfer. Therefore, how to provide an effective propulsion system to provide the thrust required during satellite operation is a problem that needs to be solved urgently. Summary of the invention

[0003] In view of this, the present invention provides an anhydrous hydrazine propulsion system and a satellite, which can ensure the generation of sufficient thrust, thereby meeting the thrust requirements required under different working conditions and facilitating practical applications.

[0004] In order to solve the above technical problems, the present application provides an anhydrous hydrazine propulsion system, comprising a first storage module, a solenoid valve, a second storage module, a first temperature control module, an acceleration module and a control module;

[0005] The first storage module, the solenoid valve, the second storage module and the acceleration module are connected in sequence, the first temperature control module is connected to the control module and the second storage module respectively, and the control module is also connected to the first storage module, the solenoid valve and the acceleration module;

[0006] The control module is used for controlling the temperature of the catalyst stored in the second storage module to reach a preset reaction temperature through the first temperature control module when the anhydrous hydrazine propulsion system is in a working state, controlling the anhydrous hydrazine stored in the first storage module as a propellant to flow to the solenoid valve, and controlling the opening and closing of the solenoid valve according to the target thrust to adjust the flow rate and flow rate of the anhydrous hydrazine, so that the anhydrous hydrazine flows through the solenoid valve to the second storage module to react with the catalyst to generate combustion gas, and then controlling the acceleration module to accelerate the combustion gas and then eject it, wherein the thrust generated by the ejected gas is the same as the target thrust.

[0007] Furthermore, it also includes a second temperature control module connected to the first storage module and the control module respectively;

[0008] The control module is also used to control the temperature of the anhydrous hydrazine stored in the first storage module to be no less than a preset minimum storage temperature through the second temperature control module when the anhydrous hydrazine propulsion system is in a standby state.

[0009] Furthermore, it also includes an injection module;

[0010] The input end of the injection module is connected to the output end of the solenoid valve through a first pipeline, the injection end extends into the second storage module through an opening on the second storage module, and the control end is connected to the control module, and is used to inject the anhydrous hydrazine input through the first pipeline into the second storage module according to a first control signal sent by the control module according to an injection rule corresponding to the first control signal, so that the anhydrous hydrazine reacts with the catalyst to generate fuel gas.

[0011] Furthermore, it also includes a third temperature control module connected to the acceleration module and the control module respectively;

[0012] The control module is also used to preheat the acceleration module through the third temperature control module before controlling the anhydrous hydrazine stored in the first storage module to flow to the solenoid valve, so that the temperature of each component in the acceleration module reaches a preset starting temperature.

[0013] Furthermore, the first storage module includes a self-locking switch module and a storage component for storing the anhydrous hydrazine;

[0014] The input end of the self-locking switch module is connected to the liquid outflow end of the storage component, the output end is connected to the input end of the solenoid valve through a second pipe, and the control end is connected to the control module, and is used to turn on and off according to a second control signal sent by the control module; wherein the first air pressure in the storage component is greater than the second air pressure in the second pipe.

[0015] Furthermore, the first storage module also includes a filtering module;

[0016] The input end of the filter module is connected to the liquid outflow end of the storage component, and the output end is connected to the input end of the self-locking switch module, and is used to filter the impurities in the anhydrous hydrazine.

[0017] Furthermore, it also includes a first pressure detection module and a second pressure detection module;

[0018] The first pressure detection module is connected to the storage component and the control module respectively, and is used to detect the first air pressure in the storage component;

[0019] The second pressure detection module is connected to the second pipeline and the control module respectively, and is used to detect the second air pressure in the second pipeline;

[0020] The control module is also used to determine whether the anhydrous hydrazine is supplied normally according to the first air pressure and the second air pressure.

[0021] Furthermore, it also includes a gas adding and discharging switch connected to the control module and the storage component respectively;

[0022] The gas adding and discharging switch is used to be turned on and off according to a third control signal sent by the control module, so as to inject compressed gas into the storage component or exhaust the air in the storage component when turned on.

[0023] Furthermore, it also includes a liquid adding and discharging switch connected to the control module and the storage component respectively;

[0024] The liquid adding and discharging switch is used to be turned on and off according to a fourth control signal sent by the control module, so that when turned on, anhydrous hydrazine for propellant replenishment is injected into the storage component or the remaining anhydrous hydrazine in the storage component is emptied.

[0025] In order to solve the above technical problems, the present invention also provides a satellite, comprising the anhydrous hydrazine propulsion system as described above.

[0026] The present application provides an anhydrous hydrazine propulsion system and a satellite, the system comprising a first storage module, a solenoid valve, a second storage module, a first temperature control module, an acceleration module and a control module, wherein the control module is used to control the anhydrous hydrazine stored in the first storage module as a propellant to flow to the solenoid valve after the temperature of the catalyst stored in the second storage module reaches a preset reaction temperature through the first temperature control module when the anhydrous hydrazine propulsion system is in a working state, and to control the opening and closing of the solenoid valve according to a target thrust to adjust the flow rate and flow rate of the anhydrous hydrazine, so that the anhydrous hydrazine flows through the solenoid valve to the second storage module to react with the catalyst to generate combustion gas, and then controls the acceleration module to accelerate the combustion gas and then eject it, so that the ejected gas generates thrust to reach the required target thrust. It can be seen that in this scheme, the control of the catalyst temperature is conducive to ensuring that the subsequent catalyst and anhydrous hydrazine can react fully and efficiently. The solenoid valve is opened and closed according to the target thrust to adjust the flow rate and flow of anhydrous hydrazine. The control of the acceleration module is further combined to make the final ejected gas the same as the target thrust, which is conducive to meeting the thrust requirements required under different working conditions. The fuel gas generated by the reaction of the catalyst and anhydrous hydrazine is essentially a high-temperature and high-pressure fuel gas, which is then processed by the acceleration module and ejected, which can double ensure the generation of sufficient thrust to flexibly adapt to various working conditions and facilitate practical applications.

[0027] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] Figure 1 A schematic diagram of the structure of an anhydrous hydrazine propulsion system provided by the present invention;

[0030] Figure 2 A schematic structural diagram of another anhydrous hydrazine propulsion system provided by the present invention. DETAILED DESCRIPTION

[0031] The core of the present invention is to provide an anhydrous hydrazine propulsion system and a satellite, which can ensure the generation of sufficient thrust, facilitate meeting the thrust requirements required under different working conditions, and facilitate practical applications.

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0033] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0034] Please refer to Figure 1 , Figure 1 A schematic structural diagram of an anhydrous hydrazine propulsion system provided by the present invention.

[0035] The anhydrous hydrazine propulsion system includes a first storage module 1, a solenoid valve 2, a second storage module 3, a first temperature control module 5, an acceleration module 4 and a control module 6;

[0036] The first storage module 1, the solenoid valve 2, the second storage module 3 and the acceleration module 4 are connected in sequence, the first temperature control module 5 is connected to the control module 6 and the second storage module 3 respectively, and the control module 6 is also connected to the first storage module 1, the solenoid valve 2 and the acceleration module 4;

[0037] The control module 6 is used to control the temperature of the catalyst stored in the second storage module 3 to reach a preset reaction temperature through the first temperature control module 5 when the anhydrous hydrazine propulsion system is in a working state, control the anhydrous hydrazine stored in the first storage module 1 as a propellant to flow to the solenoid valve 2, and control the opening and closing of the solenoid valve 2 according to the target thrust to adjust the flow rate and flow rate of the anhydrous hydrazine, so that the anhydrous hydrazine flows through the solenoid valve 2 to the second storage module 3 to react with the catalyst to generate combustion gas, and then control the acceleration module 4 to accelerate the combustion gas and then eject it, wherein the thrust generated by the ejected gas is the same as the target thrust.

[0038] In this embodiment, it should be noted that the second storage module 3 here can be a storage component 12 storing a catalyst, such as a catalyst bed; the first temperature control module 5 can include a first temperature acquisition module and a first heater, the first temperature acquisition module is used to collect the temperature of the catalyst and feed it back to the control module 6, and the first heater is used to heat the second storage module 3 according to the fifth control signal sent by the control module 6 to increase the temperature of the catalyst stored therein, so that when the system is in a working state and the required thrust is to be generated, the temperature of the catalyst is first increased to a preset reaction temperature, and then the solenoid valve 2 is controlled to open, so as to ensure that the catalyst has good activity, which is conducive to ensuring that the subsequent catalyst and anhydrous hydrazine can react fully, quickly and efficiently to ensure the reaction effect. It should be noted that the reaction between anhydrous hydrazine and the catalyst here is a strongly exothermic reaction, which can produce high-temperature and high-pressure gas; more specifically, the preset reaction temperature here can be 160 degrees Celsius, which is not particularly limited here, and can be set according to the temperature range of the catalyst to maintain the best activity; the first temperature acquisition module here can be a temperature sensor, or a temperature detection circuit designed based on a thermistor, which is not particularly limited here.

[0039] Specifically, the target thrust here is determined according to the thrust demand of the satellite under the current working condition, and then the opening and closing of the electromagnetic valve 2 is controlled according to the target thrust to adjust the flow rate and flow of the anhydrous hydrazine. More specifically, the opening and closing control of the electromagnetic valve 2 here includes controlling the opening and closing of the electromagnetic valve 2, the frequency of opening and closing, and the opening degree of the valve when opening, so as to reliably adjust the flow rate and flow of the anhydrous hydrazine, so that the flow of the anhydrous hydrazine can meet the target thrust demand and help ensure the safety and reliability of the entire system. The anhydrous hydrazine flows through the electromagnetic valve 2 to the second storage module 3 to react with the high-temperature catalyst, and the reaction will produce high-temperature and high-pressure combustion gas and enter the acceleration module 4.

[0040] Further, the acceleration module 4 may include a thrust chamber and a nozzle. After the high-temperature and high-pressure gas enters the thrust chamber, it expands in the thrust chamber. The control module 6 controls the nozzle according to the target thrust to achieve accelerated ejection of the gas (specifically, the flow rate of the gas entering the nozzle can be controlled, or the size of the opening of the throat of the nozzle for passing the gas can be adjusted, that is, the size of the opening of the narrowest part of the first convergent and then divergent nozzle can be adjusted). The ejected gas will produce an equal and opposite reaction force on the satellite. This reaction force is the thrust that propels the satellite to control the orbit, and the thrust is the same as the target thrust. In addition, the direction of the nozzle of the nozzle can also be adjusted to adjust the direction of the thrust generated, which is not particularly limited here.

[0041] It is understandable that the specific placement relationship between the modules in the satellite is not particularly limited here, and can be flexibly adjusted according to actual needs on the basis of satisfying the above structural settings; Figure 1 Due to the limitation of the picture display focus and in order to avoid confusion in the connection lines, the control module is illustrated in the form of a circle plus a figure mark.

[0042] In summary, the present application provides an anhydrous hydrazine propulsion system, which helps to ensure that the subsequent catalyst and anhydrous hydrazine can react fully and efficiently by controlling the catalyst temperature. The opening of the solenoid valve 2 is controlled according to the target thrust to adjust the flow rate and flow of the anhydrous hydrazine, and the acceleration module 4 is controlled so that the final ejected gas is the same as the target thrust, which helps to meet the thrust requirements required under different working conditions. The fuel gas generated by the reaction of the catalyst and anhydrous hydrazine is essentially a high-temperature and high-pressure fuel gas, which is then processed by the acceleration module 4 and then ejected, which can double ensure the generation of sufficient thrust to flexibly adapt to various working conditions and facilitate practical applications.

[0043] Based on the above embodiments:

[0044] In some embodiments, it further includes a second temperature control module connected to the first storage module 1 and the control module 6 respectively;

[0045] The control module 6 is also used to control the temperature of the anhydrous hydrazine stored in the first storage module 1 to be not less than a preset minimum storage temperature through the second temperature control module when the anhydrous hydrazine propulsion system is in a standby state.

[0046] In this embodiment, considering that in space, especially in certain low-temperature environments where satellites operate, the propellant may freeze due to reaching its freezing point, in order to ensure the long-term on-orbit operation of the anhydrous hydrazine propulsion system, the above-mentioned method can ensure that even when the system is in standby mode, the anhydrous hydrazine will not freeze and affect subsequent normal operation.

[0047] Specifically, the second temperature control module here may include a second temperature acquisition module and a second heater. The second temperature acquisition module is used to collect the temperature of the stored anhydrous hydrazine and feed it back to the control module 6. The acquisition method can be real-time acquisition, or acquisition according to a preset sampling period, which is not particularly limited here; the second heater is used to heat the stored anhydrous hydrazine according to the sixth control signal sent by the control module 6 to ensure that the temperature of the stored anhydrous hydrazine is not less than the preset minimum storage temperature, so as to ensure the normal flow of anhydrous hydrazine and the normal startup and operation of the entire system when the system needs to work. In addition, the preset minimum storage temperature here includes but is not limited to 5 degrees Celsius, which can be determined specifically according to the freezing point of anhydrous hydrazine.

[0048] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of another anhydrous hydrazine propulsion system provided by the present invention, wherein, due to the focus of the picture display and in order to avoid confusion in the connection, the control module is illustrated in the form of a circle plus a figure mark, and the connection between the second storage module 3 and the first temperature control module 5 and the acceleration module 4 is temporarily omitted.

[0049] In some embodiments, it also includes a spray module 7;

[0050] The input end of the injection module 7 is connected to the output end of the solenoid valve 2 through the first pipeline, the injection end extends into the second storage module 3 through the opening on the second storage module 3, and the control end is connected to the control module 6, and is used to inject the anhydrous hydrazine input through the first pipeline into the second storage module 3 according to the injection rule corresponding to the first control signal sent by the control module 6, so that the anhydrous hydrazine reacts with the catalyst to generate fuel gas.

[0051] In this embodiment, the injection module 7 here can be an injector. Through the design of the injection module 7, anhydrous hydrazine can be injected into the second storage module 3 according to a preset injection rule. Specifically, the injection rule includes but is not limited to uniform injection, so that the anhydrous hydrazine and the catalyst can be fully mixed and contacted, which is beneficial to the reaction of the two and helps to improve the reaction efficiency.

[0052] In some embodiments, it further includes a third temperature control module connected to the acceleration module 4 and the control module 6 respectively;

[0053] The control module 6 is also used to preheat the acceleration module 4 through the third temperature control module before controlling the anhydrous hydrazine stored in the first storage module 1 to flow to the solenoid valve 2, so that the temperature of each component in the acceleration module 4 reaches a preset starting temperature.

[0054] In this embodiment, considering that the fuel gas generated by the reaction is high-temperature and high-pressure fuel gas, in order to avoid damage to the components in the acceleration module 4 due to excessive temperature difference at the beginning of the operation, the acceleration module 4 can be preheated by the third temperature control module. Specifically, the preset starting temperature can be set according to actual application requirements; the components in the acceleration module 4 participating in the preheating here may include a thrust chamber and a nozzle.

[0055] More specifically, the third temperature control module may include a third temperature acquisition module and a third heater. The third temperature acquisition module is used to collect the temperature of each device in the acceleration module 4 and feed it back to the control module 6. The third heater is used to heat each device according to the seventh control signal sent by the control module 6 to achieve preheating, so as to avoid damage to the device due to excessive temperature difference.

[0056] In some embodiments, the first storage module 1 includes a self-locking switch module 11 and a storage component 12 for storing anhydrous hydrazine;

[0057] The input end of the self-locking switch module 11 is connected to the liquid outflow end of the storage component 12, the output end is connected to the input end of the solenoid valve 2 through the second pipeline, and the control end is connected to the control module 6, which is used to turn on and off according to the second control signal sent by the control module 6; wherein the first air pressure in the storage component 12 is greater than the second air pressure in the second pipeline.

[0058] In this embodiment, the self-locking switch module 11 can prevent the anhydrous hydrazine from flowing out when it is turned off, preventing the anhydrous hydrazine from accidentally flowing into the pipeline and damaging the components in each module of the system; because the first air pressure in the storage component 12 is greater than the second air pressure in the second pipeline, under the drive of the pressure difference, when the self-locking switch module 11 is turned on, the anhydrous hydrazine can smoothly flow through the second pipeline to the solenoid valve 2. More specifically, the self-locking switch module 11 here can be a self-locking valve, and the control module 6 can more accurately control the flow rate and flow of the anhydrous hydrazine by controlling the opening degree of the self-locking valve and the frequency of opening and closing.

[0059] It should also be noted that the first pipeline and the second pipeline can also be preheated to ensure that anhydrous hydrazine passes through the pipeline smoothly at the beginning of the system operation, and the flow is not affected by the cold pipeline. In addition, the storage component 12 here can be a storage tank.

[0060] In some embodiments, the first storage module further includes a filtering module 13;

[0061] The input end of the filter module 13 is connected to the liquid outflow end of the storage component 12, and the output end is connected to the input end of the self-locking switch module 11, and is used to filter the impurities in the anhydrous hydrazine.

[0062] In this embodiment, considering that anhydrous hydrazine may contain some impurities, a filtering module 13 is provided to filter the impurities in the anhydrous hydrazine so that only pure anhydrous hydrazine can be output to the self-locking switch module 11, so as to prevent the impurities from damaging the self-locking switch module 11 and the solenoid valve 2 and other precision components, thereby affecting the control accuracy. More specifically, the filtering module 13 here can be a filter.

[0063] In some embodiments, it further includes a first pressure detection module and a second pressure detection module;

[0064] The first pressure detection module is connected to the storage component 12 and the control module 6 respectively, and is used to detect the first air pressure in the storage component 12;

[0065] The second pressure detection module is connected to the second pipeline and the control module 6 respectively, and is used to detect the second air pressure in the second pipeline;

[0066] The control module 6 is further used to determine whether anhydrous hydrazine is supplied normally according to the first air pressure and the second air pressure.

[0067] In this embodiment, the first pressure detection module here may be a first pressure sensor, and the second pressure detection module may be a second pressure sensor; according to the first air pressure and the second air pressure, it can be determined whether the anhydrous hydrazine is supplied normally. For example, when the first air pressure is within the first preset allowable floating range and the second air pressure is within the second preset allowable floating range, it is determined that the anhydrous hydrazine is supplied normally. Otherwise, there may be leakage, or the pressure difference may be insufficient, so that the anhydrous hydrazine cannot flow smoothly, and other abnormal conditions.

[0068] It can be seen that the above settings are conducive to reliable monitoring of pressure, so as to timely detect pressure out of control and avoid damage to the pipeline or components in each module, which is beneficial to practical application.

[0069] In some embodiments, it also includes a gas addition and exhaust switch connected to the control module 6 and the storage component 12 respectively;

[0070] The gas adding and discharging switch is used to be turned on and off according to the third control signal sent by the control module 6 , so as to inject the compressed gas into the storage component 12 or exhaust the air in the storage component 12 when turned on.

[0071] In this embodiment, the gas addition and exhaust switch is set so that when the gas addition and exhaust switch is turned off, it is conducive to sealing the storage component 12, ensuring the first air pressure inside it and avoiding gas leakage; when it is turned on, it is conducive to injecting compressed gas into the storage component 12 to increase the air pressure inside the storage component 12 to a preset air pressure value, or, in the satellite assembly, maintenance, and repair stages, the air inside the storage component 12 is emptied to ensure safe operation. Specifically, the gas addition and exhaust switch here can be a gas addition and exhaust valve.

[0072] In some embodiments, it also includes a liquid adding and discharging switch connected to the control module 6 and the storage component 12 respectively;

[0073] The liquid adding and discharging switch is used to be turned on and off according to the fourth control signal sent by the control module 6, so as to inject anhydrous hydrazine for propellant replenishment into the storage component 12 or drain the remaining anhydrous hydrazine in the storage component 12 when turned on.

[0074] In this embodiment, the liquid adding and discharging switch can be turned on when the remaining anhydrous hydrazine is insufficient and needs to be replenished, so that new anhydrous hydrazine can be replenished and injected into the storage component 12, and then turned off after the replenishment is completed; or, during the satellite assembly, maintenance, and overhaul stages, the remaining anhydrous hydrazine in the storage component 12 can be discharged into the corresponding storage container by turning on the liquid adding and discharging switch, and then turned off after the emptying is completed.

[0075] The present invention also provides a satellite, comprising the anhydrous hydrazine propulsion system as described above.

[0076] For an introduction to the satellite provided in this application, please refer to the above-mentioned embodiment of the anhydrous hydrazine propulsion system, which will not be repeated here.

[0077] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts refer to the method part description. 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 that there is any such actual relationship or order between these entities or operations. Moreover, the term "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements that are not clearly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the sentence "including one" do not exclude the existence of other identical elements in the process, method, article or equipment including the elements.

[0078] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An anhydrous hydrazine propulsion system, characterized in that: It includes a first storage module, a solenoid valve, a second storage module, a first temperature control module, an acceleration module and a control module; The first storage module, the solenoid valve, the second storage module and the acceleration module are connected in sequence, the first temperature control module is connected to the control module and the second storage module respectively, and the control module is also connected to the first storage module, the solenoid valve and the acceleration module; The control module is used for controlling the temperature of the catalyst stored in the second storage module to reach a preset reaction temperature through the first temperature control module when the anhydrous hydrazine propulsion system is in a working state, controlling the anhydrous hydrazine stored in the first storage module as a propellant to flow to the solenoid valve, and controlling the opening and closing of the solenoid valve according to the target thrust to adjust the flow rate and flow rate of the anhydrous hydrazine, so that the anhydrous hydrazine flows through the solenoid valve to the second storage module to react with the catalyst to generate combustion gas, and then controlling the acceleration module to accelerate the combustion gas and then eject it, wherein the thrust generated by the ejected gas is the same as the target thrust.

2. The anhydrous hydrazine propulsion system according to claim 1, characterized in that: It also includes a second temperature control module connected to the first storage module and the control module respectively; The control module is also used to control the temperature of the anhydrous hydrazine stored in the first storage module to be no less than a preset minimum storage temperature through the second temperature control module when the anhydrous hydrazine propulsion system is in a standby state.

3. The anhydrous hydrazine propulsion system according to claim 1, characterized in that: Also included is an injection module; The input end of the injection module is connected to the output end of the solenoid valve through a first pipeline, the injection end extends into the second storage module through an opening on the second storage module, and the control end is connected to the control module, and is used to inject the anhydrous hydrazine input through the first pipeline into the second storage module according to a first control signal sent by the control module according to an injection rule corresponding to the first control signal, so that the anhydrous hydrazine reacts with the catalyst to generate fuel gas.

4. The anhydrous hydrazine propulsion system according to claim 1, characterized in that: It also includes a third temperature control module connected to the acceleration module and the control module respectively; The control module is also used to preheat the acceleration module through the third temperature control module before controlling the anhydrous hydrazine stored in the first storage module to flow to the solenoid valve, so that the temperature of each component in the acceleration module reaches a preset starting temperature.

5. The anhydrous hydrazine propulsion system according to any one of claims 1 to 4, characterized in that: The first storage module includes a self-locking switch module and a storage component for storing the anhydrous hydrazine; The input end of the self-locking switch module is connected to the liquid outflow end of the storage component, the output end is connected to the input end of the solenoid valve through a second pipe, and the control end is connected to the control module, and is used to turn on and off according to a second control signal sent by the control module; wherein the first air pressure in the storage component is greater than the second air pressure in the second pipe.

6. The anhydrous hydrazine propulsion system according to claim 5, characterized in that: The first storage module also includes a filtering module; The input end of the filter module is connected to the liquid outflow end of the storage component, and the output end is connected to the input end of the self-locking switch module, and is used to filter the impurities in the anhydrous hydrazine.

7. The anhydrous hydrazine propulsion system according to claim 5, characterized in that: Also includes a first pressure detection module and a second pressure detection module; The first pressure detection module is connected to the storage component and the control module respectively, and is used to detect the first air pressure in the storage component; The second pressure detection module is connected to the second pipeline and the control module respectively, and is used to detect the second air pressure in the second pipeline; The control module is also used to determine whether the anhydrous hydrazine is supplied normally according to the first air pressure and the second air pressure.

8. The anhydrous hydrazine propulsion system according to claim 5, characterized in that: It also includes a gas adding and discharging switch connected to the control module and the storage component respectively; The gas adding and discharging switch is used to be turned on and off according to a third control signal sent by the control module, so as to inject compressed gas into the storage component or exhaust the air in the storage component when turned on.

9. The anhydrous hydrazine propulsion system according to claim 5, characterized in that: It also includes a liquid adding and discharging switch connected to the control module and the storage component respectively; The liquid adding and discharging switch is used to be turned on and off according to a fourth control signal sent by the control module, so that when turned on, anhydrous hydrazine for propellant replenishment is injected into the storage component or the remaining anhydrous hydrazine in the storage component is emptied.

10. A satellite, characterized in that: Comprising the anhydrous hydrazine propulsion system according to any one of claims 1 to 9.

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