An experimental device for ion electric propulsion impurity gas induced beam current fluctuation

Abstract

The application relates to an experimental device for ion electric propulsion impurity gas induced beam current flicker, comprising an ion electric propulsion system, a high-pressure valve, a control angle valve, a gas mixing chamber, a gas temporary storage room, a gas temporary storage room capacity control piston, a gas pressure gauge, a hydraulic system, a solenoid valve, a pressure reducing valve, a control computer and a high-pressure gas cylinder. The experimental device for ion electric propulsion impurity gas induced beam current flicker disclosed by the application realizes the generation of impurity gas with different components and different mixing ratios by using the method of accurate mixing of multiple component gases and multiple valve combination control, provides an engineering feasible experimental device for simulating the ion electric propulsion beam current flicker induced by different impurity gases and the influence characteristics, overcomes the technical short board of the experimental research on the influence of the ion electric propulsion material outgassing, dirt volatilization and other impurity gases on the beam current flicker, and provides a research basis for formulating an ion electric propulsion non-intended beam current flicker suppression strategy.

Description

Technical Field

[0001] This invention relates to the field of aerospace electric propulsion technology, and more specifically, to an experimental apparatus for ion electric propulsion impurity gas-induced beam scintillation. Background Technology

[0002] Ion electric propulsion, an advanced aerospace propulsion technology, utilizes space electrical energy to ionize propellant, generating high-density plasma. A high-voltage grid system then extracts, accelerates, and ejects these ions to produce thrust. During long-term operation, processes such as gas escaping from different materials in a vacuum environment and the volatilization of contaminants on material surfaces can cause changes in the local gas pressure and composition at the ion electric propulsion grid. This lowers the breakdown threshold voltage under low vacuum pressure, inducing beam scintillation, which can severely damage or even fail the grid. This restricts the improvement of the reliability and lifespan of ion electric propulsion products and limits their widespread application. Current technologies lack ground-based experimental devices for beam scintillation induced by impurity gases, leading to insufficient understanding of the characteristics of this phenomenon. Summary of the Invention

[0003] This application provides an experimental apparatus for ion-electrically propelled impurity gas-induced beam scintillation. To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general description, nor is it intended to identify key / important components or to describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the detailed description that follows.

[0004] This application provides an experimental apparatus for inducing beam scintillation using ion-electric propulsion impurity gas. The apparatus includes: an ion-electric propulsion system, a high-pressure valve, a control angle valve, a gas mixing chamber, a gas storage chamber, a gas storage chamber capacity control piston, a gas pressure gauge, a hydraulic system, a solenoid valve, a pressure reducing valve, a control computer, and a high-pressure gas cylinder.

[0005] One end of the gas mixing chamber is connected to the ion electric propulsion system, and the other end is connected to the gas storage chamber. The high-pressure valve is installed on the pipeline connected to the ion electric propulsion system.

[0006] The control angle valve is installed on the gas mixing chamber;

[0007] The gas pressure gauge is installed on one side of the gas storage chamber, and the gas storage chamber capacity control piston is installed inside the gas storage chamber;

[0008] The hydraulic rod of the hydraulic system is connected to and placed parallel to the capacity control piston of the gas storage chamber.

[0009] The gas storage chamber is connected to the high-pressure gas cylinder, and the solenoid valve and the pressure reducing valve are sequentially installed on the connecting pipeline.

[0010] One end of the control computer is connected to the solenoid valve, and the other end is connected to the hydraulic system.

[0011] According to a preferred embodiment, the gas storage chamber is cylindrical, and the gas capacity in the gas storage chamber is adjusted by controlling the position of the gas storage chamber capacity control piston in the gas storage chamber.

[0012] According to a preferred embodiment, the gas mixing chamber is spherical, and the gas mixing chamber is provided with a gas outlet and a gas injection port.

[0013] According to a preferred embodiment, the control angle valve includes a gas injection control angle valve and a gas discharge control angle valve, which are respectively disposed at the gas injection and discharge ports on the gas mixing chamber, and are used to control the injection and discharge of gas respectively.

[0014] According to a preferred embodiment, the pipeline connecting the components is a stainless steel pipeline, the diameter of the stainless steel pipeline does not exceed 4mm, and the air pressure does not exceed 1MPa.

[0015] According to a preferred embodiment, the system further includes a vacuum chamber, within which the ion electric propulsion system is disposed.

[0016] According to a preferred embodiment, the gas injection control angle valve, the gas storage chamber, the gas storage chamber capacity control piston, the gas pressure gauge, the hydraulic system, the solenoid valve, the pressure reducing valve, the control computer, and the high-pressure gas cylinder together constitute a gas injection system. Multiple gas injection systems can be set up to meet the needs of mixing gases of different components.

[0017] The technical solutions provided in this application embodiment may include the following beneficial effects:

[0018] In this embodiment, the experimental apparatus for inducing beam scintillation with impurity gas in ion electric propulsion includes: an ion electric propulsion system, a high-pressure valve, a control angle valve, a gas mixing chamber, a gas storage chamber, a gas storage chamber capacity control piston, a gas pressure gauge, a hydraulic system, a solenoid valve, a pressure reducing valve, a control computer, and a high-pressure gas cylinder. Specifically: one end of the gas mixing chamber is connected to the ion electric propulsion system, and the other end is connected to the gas storage chamber; the high-pressure valve is installed on the pipeline connected to the ion electric propulsion system; the control angle valve is installed on the gas mixing chamber; the gas pressure gauge is installed on one side of the gas storage chamber, and the gas storage chamber capacity control piston is installed inside the gas storage chamber; the hydraulic rod of the hydraulic system is connected to and parallel to the gas storage chamber capacity control piston; the gas storage chamber is connected to the high-pressure gas cylinder, and the solenoid valve and the pressure reducing valve are sequentially installed on the connecting pipeline; one end of the control computer is connected to the solenoid valve, and the other end is connected to the hydraulic system. This application describes an experimental device for ion electric propulsion beam scintillation induced by impurity gases. Utilizing precise mixing of multiple component gases and a combination of valves for control, it generates impurity gases with different components and mixing ratios. This provides an engineering-feasible experimental device for simulating the scintillation induction and influence characteristics of different impurity gases on ion electric propulsion beams. It solves the experimental challenge of simulating the influence of various components and contents of gases on ion electric propulsion beam scintillation on the ground, overcoming the long-standing technical shortcomings in experimental research on the influence of impurity gases such as effluent from ion electric propulsion materials and volatilization of contaminants on beam scintillation. It provides a research foundation for formulating strategies to suppress unintended beam scintillation in ion electric propulsion, further improving the reliability of ion electric propulsion in my country. The device is simple and easy to operate, and can work independently without affecting the ion electric propulsion test system itself or the normal extraction of the ion electric propulsion beam. The experimental results have extremely high reliability, enhancing the persuasiveness of the results and providing a direct analytical means for improving the reliability of ion electric propulsion.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0021] Figure 1 This is a schematic diagram of the structure of an experimental device for ion electric propulsion impurity gas-induced beam scintillation provided in an embodiment of this application.

[0022] Reference numerals: 1-Ion electric propulsion system; 2-High-pressure valve; 3-Gas discharge control angle valve; 4-Gas mixing chamber; 5-Gas storage chamber; 6-Gas storage chamber capacity control piston; 7-Gas pressure gauge; 8-Hydraulic system; 9-Control computer; 10-Solenoid valve; 11-Pressure reducing valve; 12-High-pressure gas cylinder; 13-Gas injection control angle valve. Detailed Implementation

[0023] The following description and accompanying drawings fully illustrate specific embodiments of the invention to enable those skilled in the art to practice them.

[0024] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of systems and methods consistent with some aspects of the invention as detailed in the appended claims.

[0026] In the description of this invention, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0027] The following will be combined with the appendix Figure 1 This application provides a detailed description of an experimental apparatus for ion electric propulsion impurity gas-induced beam scintillation, as provided in the embodiments of this application.

[0028] This application provides an experimental device for beam scintillation induced by impurity gas in ion electric propulsion, in order to solve the problems of difficulty in conducting beam scintillation experiments induced by mixed gases with different components and mixing ratios in existing ion electric propulsion ground systems, difficulty in mastering the characteristics of beam scintillation induced by impurity gases with different components, and inadequate protective measures against beam scintillation induced by impurity gases.

[0029] Please see Figure 1This is a schematic diagram of the structure of an experimental apparatus for inducing beam scintillation by ion electric propulsion impurity gas, provided in an embodiment of this application. Figure 1 As shown in the embodiments of this application, an experimental apparatus for inducing beam scintillation by impurity gas in ion electric propulsion may include: an ion electric propulsion system (1), a high-pressure valve (2), a control angle valve, a gas mixing chamber (4), a gas storage chamber (5), a gas storage chamber capacity control piston (6), a gas pressure gauge (7), a hydraulic system (8), a solenoid valve (10), a pressure reducing valve (11), a control computer (9), and a high-pressure gas cylinder (12), wherein:

[0030] One end of the gas mixing chamber (4) is connected to the ion electric propulsion system (1), and the other end is connected to the gas storage chamber (5). A high-pressure valve (2) is installed on the pipeline connected to the ion electric propulsion system (1).

[0031] The control angle valve is installed on the gas mixing chamber (4);

[0032] A gas pressure gauge (7) is installed on one side of the gas storage chamber (5), and a gas storage chamber capacity control piston (6) is installed inside the gas storage chamber (5).

[0033] The hydraulic rod of the hydraulic system (8) is connected to the gas storage chamber capacity control piston (6) and placed in parallel.

[0034] The gas storage chamber (5) is connected to the high-pressure gas cylinder (12), and a solenoid valve (10) and a pressure reducing valve (11) are installed in sequence on the connecting pipeline;

[0035] One end of the control computer (9) is connected to the solenoid valve (10), and the other end is connected to the hydraulic system (8).

[0036] Specifically, in this embodiment, the ion electric propulsion system (1) is installed in the vacuum chamber for experimental testing, the high-pressure valve (2) is used to control the supply and discharge of impurity gas, the gas pressure gauge (7) is used to monitor the gas pressure in the gas storage chamber (5), the solenoid valve (10) is used to store gas in the gas storage chamber (5), the pressure reducing valve (11) is used to unload the gas pressure, and the high-pressure gas cylinder (12) is used to store the gas source; the gas storage chamber (5) is cylindrical, and the hydraulic system (8) is controlled by the control computer (9) to adjust the position of the gas storage chamber capacity control piston (6) inside the gas storage chamber (5), thereby autonomously changing the gas capacity in the gas storage chamber (5) and realizing different Precise mixing of components and gases with different mixing ratios; the gas mixing chamber (4) is spherical, and has one gas outlet and multiple gas injection ports. The gas injection and exhaust ports are symmetrically distributed on the wall of the gas mixing chamber (4), which can improve the uniformity of gas mixing and the pressure resistance of the gas mixing chamber (4); the injection pipeline is welded to the gas mixing chamber (4), and the control angle valve is set on the gas mixing chamber (4); the control angle valve includes a gas injection control angle valve (13) and a gas exhaust control angle valve (3). The gas injection control angle valve (13) and the gas exhaust control angle valve (3) are respectively set on the gas injection and exhaust ports of the gas mixing chamber (4), respectively Used to control the injection and discharge of gas, it can freely and flexibly control the components of the gas mixture; the gas storage chamber (5) isolates the gas source pipeline from the gas mixing chamber (4) through the gas injection control angle valve (13) and the solenoid valve (10), maintaining the purity of the gas source; the control computer (9) provides real-time intelligent control of the gas pressure gauge (7), hydraulic system (8), and solenoid valve (10), and dynamically and accurately regulates the three to ensure the accuracy of the gas capacity inside the gas storage chamber (5); the pipelines connecting the components are stainless steel pipelines, with a diameter not exceeding 4mm and a gas pressure not exceeding 1MPa; the high-pressure valve (2) is connected to the vacuum chamber on one side and to the gas mixing chamber on the other side. (4) The system is divided into two independent systems. The two systems can be used together without interfering with each other or connected by a high-pressure valve (2). The gas injection control angle valve (13), gas storage chamber (5), gas storage chamber capacity control piston (6), gas pressure gauge (7), hydraulic system (8), solenoid valve (10), pressure reducing valve (11), control computer (9) and high-pressure gas cylinder (12) together constitute the gas injection system. In this embodiment, at least one gas injection system is set up. When only one gas injection system is set up, the type of impurity gas can only be one. Therefore, multiple gas injection systems can be set up to meet the needs of mixing different component gases.In this embodiment, the gas storage chamber (5), the gas mixing chamber (4), and the vacuum chamber can be connected by opening the gas injection control valve (13), the gas discharge control valve (3), and the high-pressure valve (2). Then, the excess gas in the gas mixing chamber (4) is completely evacuated using a ground-based vacuum pumping system, providing a purer environment for mixing different gas components. This device has the capability to conduct experimental research on the impact of high-precision impurity gas composition control on induced beam scintillation.

[0037] During the experiment, when the ion electric propulsion system (1) was operating in steady state, different gases that met the experimental conditions were filled into the gas storage chamber (5). Then, the gas injection control valve (13) was opened one by one. After all the gases were fully mixed, the gas discharge control valve (3) and the high-pressure valve (2) were opened to spray the mixed gas around the ion electric propulsion system (1). Using an additional beam scintillation monitoring device, the influence characteristics and evolution law of impurity gas on the beam scintillation of ion electric propulsion were observed and recorded.

[0038] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0039] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. An experimental apparatus for ion-electrically propelled impurity gas-induced beam scintillation, characterized in that, include: The system includes an ion electric propulsion system, high-pressure valves, control angle valves, a gas mixing chamber, a gas storage chamber, a gas storage chamber capacity control piston, a gas pressure gauge, a hydraulic system, solenoid valves, pressure reducing valves, a control computer, and high-pressure gas cylinders, among which: One end of the gas mixing chamber is connected to the ion electric propulsion system, and the other end is connected to the gas storage chamber. The high-pressure valve is installed on the pipeline connected to the ion electric propulsion system. The control angle valve is installed on the gas mixing chamber; The control angle valve includes a gas injection control angle valve and a gas discharge control angle valve. The gas injection control angle valve and the gas discharge control angle valve are respectively installed at the gas injection and discharge ports on the gas mixing chamber, and are used to control the injection and discharge of gas respectively. The gas pressure gauge is installed on one side of the gas storage chamber, and the gas storage chamber capacity control piston is installed inside the gas storage chamber; The hydraulic rod of the hydraulic system is connected to and placed parallel to the capacity control piston of the gas storage chamber. The gas storage chamber is connected to the high-pressure gas cylinder, and the solenoid valve and the pressure reducing valve are sequentially installed on the connecting pipeline. One end of the control computer is connected to the solenoid valve, and the other end is connected to the hydraulic system; The gas injection control angle valve, the gas storage chamber, the gas storage chamber capacity control piston, the gas pressure gauge, the hydraulic system, the solenoid valve, the pressure reducing valve, the control computer, and the high-pressure gas cylinder together constitute a gas injection system. Multiple gas injection systems are provided to meet the needs of mixing gases of different components.

2. The experimental apparatus for ion electric propulsion impurity gas-induced beam scintillation according to claim 1, characterized in that, The gas storage chamber is cylindrical, and the gas volume in the gas storage chamber is adjusted by controlling the position of the piston in the gas storage chamber.

3. The experimental apparatus for beam scintillation induced by ion electric propulsion impurity gas according to claim 1, characterized in that, The gas mixing chamber is spherical, and it is provided with a gas outlet and a gas injection port.

4. The experimental apparatus for ion electric propulsion impurity gas-induced beam scintillation according to claim 1, characterized in that, The pipes connecting the various components are stainless steel pipes, with a diameter not exceeding 4mm and a gas pressure not exceeding 1MPa.

5. The experimental apparatus for ion electric propulsion impurity gas-induced beam scintillation according to claim 1, characterized in that, It also includes a vacuum chamber, within which the ion electric propulsion system is housed.

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