Electric propulsion anode gas distributor

Abstract

The present application provides an electric propulsion anode gas distributor, which includes an orifice plate installation and an orifice plate group. An air inlet pipe and a conductive column are connected to one side of the orifice plate installation, the air inlet pipe is used to input the initial gas working medium, and the conductive column is used to connect an external power supply; the other side of the orifice plate installation is sequentially connected to an n-stage orifice plate group, where n is a natural number; the orifice plate group includes an orifice slot plate and a throttle plate, the air inlet pipe is connected to the orifice slot plate through the orifice plate installation, the orifice slot plate is used to form a channel and a cavity with the throttle plate, and the throttle plate is used to form a pore with the orifice slot plate; the channel, the cavity and the pore are used to form a three-dimensional flow channel, and the three-dimensional flow channel is used to equalize the flow of the input gas working medium. The present application can make the gas working medium evenly distributed at the outlet to achieve the purpose of equal flow; it can reduce the flow rate of the gas working medium, prolong the residence time of the gas in the electric propulsion channel, and thus improve the ionization efficiency of the electric propulsion.

Description

Technical Field

[0001] The present application belongs to the field of electric propulsion, and specifically relates to an electric propulsion anode gas distributor. Background Art

[0002] Electric propulsion technology has been increasingly widely used in aerospace activities due to its advantages of high specific impulse, long life, and small size. With the development of micro-satellites in recent years, small electric thrusters have gradually developed. The miniaturization of electric thrusters has reduced the size of the discharge channel, which has brought difficulties to the design of the anode gas distributor.

[0003] Traditional gas distributors rely on multi-stage buffer chambers and throttle holes between buffer chambers to achieve flow uniformity. Therefore, if the degree of gas homogenization is to be improved, on the one hand, more buffer chambers must be set up, but the increase in the number of buffer chambers will inevitably increase the axial height and weight of the structure; on the other hand, as many throttle holes as possible must be arranged on the partition, and the diameter of the throttle holes must be as small as possible. However, this requirement will bring certain difficulties to processing and is more likely to cause deposition blockage. In addition, traditional gas distributors cannot effectively reduce the flow rate of the gas working medium. Summary of the invention

[0004] In order to at least overcome the problems existing in the related art to some extent, the present application provides an electric propulsion anode gas distributor.

[0005] According to an embodiment of the present application, the present application provides an electric propulsion anode gas distributor, which includes a mounting orifice plate and an orifice plate group, an air intake pipe and a conductive column are connected to one side surface of the mounting orifice plate, the air intake pipe is used to input an initial gas working medium, and the conductive column is used to connect an external power supply;

[0006] The other side of the mounting hole plate is connected in sequence with an n-stage hole plate group, where n is a natural number;

[0007] The orifice plate group includes an orifice plate and a throttle plate. The air inlet pipe is connected to the orifice plate through the mounting orifice plate. The orifice plate is used to form a channel and a cavity with the throttle plate, and the throttle plate is used to form a hole with the orifice plate; the channel, cavity and hole are used to form a three-dimensional flow channel, and the three-dimensional flow channel is used to evenly distribute the input gas working medium.

[0008] In the above-mentioned electric propulsion anode gas distributor, the parts where the mounting hole plate, the hole slot plate and the throttle plate cooperate with each other adopt an annular structure of the same shape, and the mounting hole plate, the hole slot plate and the throttle plate are welded together.

[0009] In the above-mentioned electric propulsion anode gas distributor, the hole slot plate in the hole plate group of the nth stage is provided with 2 n - 1A hollow unit; the hollow unit includes a middle through hole, a first slit, a first end through hole, a second slit and a second end through hole, the middle through hole is connected with the first end through hole through the first slit, and is connected with the second end through hole through the second slit.

[0010] Further, when n is 1, the other side of the mounting orifice plate is connected to a primary orifice plate group, and a hollow unit is arranged on the orifice plate in the orifice plate group, and the length of the hollow unit is half of the circumference of the orifice plate.

[0011] Furthermore, when n is a natural number greater than 1, the other side of the mounting hole plate is connected to two or more hole plate groups, and a hollow unit is arranged on the hole slot plate in the first hole plate group connected to the mounting hole plate, and the length of the hollow unit is half of the circumference of the hole slot plate; the 2 holes on the hole slot plate in the nth hole plate group are connected to the mounting hole plate. n-1 The hollow units are evenly spaced along the circumference of the hole slot plate.

[0012] Furthermore, when n is 5, the other side of the mounting orifice plate is sequentially connected with a five-stage orifice plate group, in the first-stage orifice plate group, one hollow unit is arranged on the orifice slot plate, and two throttling holes are arranged on the throttling plate; in the second-stage orifice plate group, two hollow units are arranged on the orifice slot plate, and four throttling holes are arranged on the throttling plate; in the third-stage orifice plate group, four hollow units are arranged on the orifice slot plate, and eight throttling holes are arranged on the throttling plate; in the fourth-stage orifice plate group, eight hollow units are arranged on the orifice slot plate, and 16 throttling holes are arranged on the throttling plate; in the fifth-stage orifice plate group, 16 hollow units are arranged on the orifice slot plate, and 32 throttling holes are arranged on the throttling plate; the 32 throttling holes provide 32 outlets for the gas working medium.

[0013] Furthermore, the throttle plate in the orifice plate group of the nth stage is provided with 2 n The throttle holes are evenly spaced on the throttle plate along the circumference of the throttle plate.

[0014] Furthermore, the throttling holes on the throttling plates in the orifice plate group at the same level are respectively connected to the first end through hole and the second end through hole on the orifice slot plate, and the middle through hole on the orifice slot plate is covered by the throttling plate;

[0015] The throttling holes on the throttling plates in the orifice plate groups of adjacent stages are respectively connected to the middle through holes on the orifice slot plates.

[0016] Furthermore, the size of the throttling hole is 50 μm to 150 μm.

[0017] Furthermore, the mounting hole plate, the hole slot plate and the throttle plate are all processed by machining or laser etching technology.

[0018] According to the above-mentioned specific implementation methods of the present application, it can be known that there are at least the following beneficial effects: the electric propulsion anode gas distributor provided in the present application utilizes an installation orifice plate and an orifice plate group to set up a three-dimensional flow channel, and the gas working medium is continuously diverted in the three-dimensional flow channel so that the gas working medium is evenly distributed at the outlet, thereby achieving the purpose of uniform flow.

[0019] By setting a series of holes, channels and cavities in series in the orifice plate and the throttle plate, the flow rate of the gas working medium can be reduced, the residence time of the gas in the electric propulsion channel can be prolonged, thereby improving the ionization efficiency of the electric propulsion, and at the same time, the homogenization degree of the gas can be improved.

[0020] It should be understood that the above general description and the following specific embodiments are only exemplary and illustrative and do not limit the scope of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The attached drawings below are part of the specification of the present application, which illustrate embodiments of the present application. The attached drawings together with the description of the specification are used to explain the principles of the present application.

[0022] Figure 1 A schematic diagram of the overall structure of an electric propulsion anode gas distributor provided for a specific implementation of the present application.

[0023] Figure 2 A cross-sectional view of an electric propulsion anode gas distributor provided for a specific embodiment of the present application.

[0024] Figure 3 An exploded view of an electric propulsion anode gas distributor provided for a specific embodiment of the present application.

[0025] Figure 4 One of the structural schematic diagrams of a basic fluid unit in an electric propulsion anode gas distributor provided in a specific embodiment of the present application.

[0026] Figure 5 A schematic structural diagram of a fluid unit network in an electric propulsion anode gas distributor provided for a specific embodiment of the present application.

[0027] Figure 6 A schematic structural diagram of the fluid domain in an electric propulsion anode gas distributor provided for a specific embodiment of the present application.

[0028] Figure 7 The second structural schematic diagram of the basic fluid unit in an electric propulsion anode gas distributor provided for a specific implementation of the present application.

[0029] Description of Reference Numerals

[0030] 1. Mounting hole plate; 11. First through hole; 12. Second through hole;

[0031] 2. Orifice plate group;

[0032] 21. hole slot plate; 22. throttle plate; 221. throttle hole;

[0033] 23, hollow unit; 231, middle through hole; 232, first slit; 233, first end through hole; 234, second slit; 235, second end through hole;

[0034] 3. Intake pipe;

[0035] 4. Conductive column. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clearly understood, the spirit of the contents disclosed in the present application will be clearly explained with the accompanying drawings and detailed descriptions below. After understanding the embodiments of the contents of the present application, any technician in the relevant technical field can change and modify them according to the techniques taught by the contents of the present application without departing from the spirit and scope of the contents of the present application.

[0037] The exemplary embodiments and descriptions of the present application are used to explain the present application, but are not intended to limit the present application. In addition, elements / components with the same or similar reference numerals used in the drawings and embodiments are used to represent the same or similar parts.

[0038] The terms “first”, “second”, etc. used in this document do not particularly refer to an order or sequence, nor are they used to limit this application. They are only used to distinguish elements or operations described with the same technical terms.

[0039] The words “include,” “including,” “have,” “contain,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0040] As used herein, "and / or" includes any or all combinations of the items described.

[0041] As used herein, “plurality” includes “two” and “more than two”; as used herein, “plurality groups” includes “two groups” and “more than two groups”.

[0042] Certain terms used to describe the present application are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art regarding the description of the present application.

[0043] like Figure 1 and Figure 2As shown, the electric propulsion anode gas distributor provided in the embodiment of the present application includes a mounting orifice plate 1 and a orifice plate group 2, wherein a first through hole 11 and a second through hole 12 are opened on one side surface of the mounting orifice plate 1, and the mounting orifice plate 1 is connected to the intake pipe 3 through the first through hole 11, and the intake pipe 3 is the inlet channel of the initial gas working medium; the mounting orifice plate 1 is connected to the conductive column 4 through the second through hole 12, and the conductive column 4 is the power distribution interface.

[0044] The other side of the installation orifice plate 1 is connected in sequence to an n-stage orifice plate group 2, where n is a natural number.

[0045] Among them, Figure 3 As shown, each stage of the orifice plate group 2 includes a hole slot plate 21 and a throttle plate 22. The hole slot plate 21 is used to form a channel and a cavity with the throttle plate 22, and the throttle plate 22 is used to form a hole channel with the hole slot plate 21; the channel, the cavity and the hole channel are used to form a three-dimensional flow channel to continuously divert the gas working medium entering the electric propulsion anode gas distributor to achieve the purpose of equal flow.

[0046] The hole slot plate 21 in the nth level hole plate group 2 is provided with 2 n-1 Each hollow unit 23 includes a middle through hole 231, a first slit 232, a first end through hole 233, a second slit 234 and a second end through hole 235, wherein the middle through hole 231 is connected with the first end through hole 233 through the first slit 232 and is connected with the second end through hole 235 through the second slit 234.

[0047] The throttle plate 22 in the nth stage orifice plate group 2 is provided with 2 n The throttle holes 221 are evenly spaced in the circumferential direction on the throttle plate 22 .

[0048] The first through hole 11 on the mounting orifice plate 1 is connected to the middle through hole 231 on the orifice slot plate 21 in the first orifice plate group 2. The throttle hole 221 on the throttle plate 22 in the same orifice plate group 2 is connected to the first end through hole 233 and the second end through hole 235 on the orifice slot plate 21 respectively; the middle through hole 231 on the orifice slot plate 21 is covered by the throttle plate 22. The throttle holes 221 on the throttle plates 22 in the adjacent orifice plate groups 2 are connected to the middle through holes 231 on the orifice slot plates 21 respectively. In the direction away from the mounting orifice plate 1, the throttle hole 221 on the throttle plate 22 in the outermost orifice plate group 2 is used to provide an outlet for the gas working medium.

[0049] The installation orifice plate 1 and the n-stage orifice plate group 2 are connected in sequence, and the installation orifice plate 1, the orifice plate 21 and the throttle plate 22 form an internal flow channel. The flow of the gas working medium in the flow channel can be simplified as follows: Figure 4 The basic fluid unit shown in FIG. Each basic fluid unit includes a unit inlet, two channels, two cavities and two holes, wherein the hole is the unit inlet of the next level basic fluid unit.

[0050] The two channels are denoted as channel I and channel II, the two cavities are denoted as cavity I and cavity II, and the two holes are denoted as hole I and hole II. Then the gas working medium flows in the basic fluid unit in the direction of the arrow in hole I←cavity I←channel I←unit inlet→channel II→cavity II→hole II.

[0051] The multi-stage orifice plate group 2 can realize the flow splitting and series connection of multi-stage basic fluid units. Figure 5 As shown, multiple levels of basic fluid units can form a fluid unit network.

[0052] According to the fluid unit network, n-level basic fluid units can provide 2 n In a single basic fluid unit, the structures of unit inlet→channel I→cavity I→pore I and unit inlet→channel II→cavity II→pore II are symmetrical, and the flow state of the gas working medium is the same, providing a basis for achieving uniform flow of the gas working medium.

[0053] Each basic fluid unit finally forms Figure 6 The complete fluid domain shown in the figure, wherein the installation orifice plate 1 and the orifice plate 21 and the throttle plate 22 in the first-stage orifice plate group 2 form a first-stage fluid domain, the throttle plate 22 in the first-stage orifice plate group 2 and the orifice plate 21 and the throttle plate 22 in the second-stage orifice plate group 2 form a second-stage fluid domain, the throttle plate 22 in the second-stage orifice plate group 2 and the orifice plate 21 and the throttle plate 22 in the third-stage orifice plate group 2 form a third-stage fluid domain, and so on, the throttle plate 22 in the n-1th-stage orifice plate group 2 and the orifice plate 21 and the throttle plate 22 in the nth-stage orifice plate group 2 form an nth-stage fluid domain. The gas working medium is evenly divided into 2 by the nth-stage fluid domain. n to achieve the purpose of current sharing.

[0054] The a in the basic fluid unit ab represents the level number of the fluid domain, and b represents the sequence number of the basic fluid unit in the a-level fluid domain. Figure 5 As shown, the basic fluid unit 3-2 represents the second basic fluid unit in the third-level fluid domain.

[0055] The flow process of the gas working medium in the flow channel can be regarded as the process of the gas working medium flowing from the inlet to the outlet through a series of resistive elements (i.e., pores and channels) and capacitive elements (i.e., cavities) connected in series. Under the action of the resistive elements and capacitive elements, the purpose of reducing the flow rate of the gas working medium is achieved.

[0056] In a specific embodiment, when n is 1, the other side of the installation orifice plate 1 is connected to a first-level orifice plate group 2, and a hollow unit 23 is provided on the hole slot plate 21 in the orifice plate group 2. The length of the hollow unit 23 is half the circumference of the entire hole slot plate 21. The throttle plate 22 in the orifice plate group 2 is provided with two throttle holes 221, and the two throttle holes 221 are evenly spaced on the throttle plate 22.

[0057] The first through hole 11 on the mounting orifice plate 1 is connected to the middle through hole 231 on the orifice slot plate 21 in the orifice plate group 2. The throttle hole 221 on the throttle plate 22 in the orifice plate group 2 is respectively connected to the first end through hole 233 and the second end through hole 235 on the orifice slot plate 21; the middle through hole 231 on the orifice slot plate 21 is covered by the throttle plate 22.

[0058] In another specific embodiment, when n is a natural number greater than 1, at least two levels of orifice plate groups 2 are connected to the other side of the installation orifice plate 1. Among them, the hole slot plate 21 in the first level orifice plate group 2 is provided with a hollow unit 23, and the throttle plate 22 is provided with two throttling holes 221; the hole slot plate 21 in the second level orifice plate group 2 is provided with two 1 A hollow unit 23 is provided on the throttle plate 22. 2 The third stage orifice plate group 2 is provided with 2 2 A hollow unit 23 is provided on the throttle plate 22. 3 The throttling holes 221 are arranged on the hole plate 21 in the nth-stage hole plate group 2. n-1 A hollow unit 23 is provided on the throttle plate 22. n A throttle hole 221.

[0059] For the hollow units 23 on the orifice plate 21 in the first-stage orifice plate group 2, the length of the hollow units 23 is half the circumference of the entire orifice plate 21; for the hollow units 23 on the orifice plates 21 in the remaining stages of the orifice plate group 2, the hollow units 23 are evenly spaced on the orifice plate 21. The throttle holes 221 on the throttle plate 22 in each stage of the orifice plate group 2 are evenly spaced on the throttle plate 22 along the circumference of the throttle plate 22.

[0060] The first through hole 11 on the mounting orifice plate 1 is connected to the middle through hole 231 on the orifice slot plate 21 in the first-stage orifice plate group 2. The throttle hole 221 on the throttle plate 22 in the same-stage orifice plate group 2 is respectively connected to the first end through hole 233 and the second end through hole 235 on the orifice slot plate 21; the middle through hole 231 on the orifice slot plate 21 is covered by the throttle plate 22.

[0061] The throttle holes 221 on the throttle plates 22 in the orifice plate groups 2 of adjacent stages are respectively connected to the middle through holes 231 on the orifice plate 21 .

[0062] In a specific embodiment, Figure 3 As shown, the other side of the mounting orifice plate 1 is connected in sequence to a 5-stage orifice plate group 2 .

[0063] In the first-stage orifice plate group 2, a hollow unit 23 is provided on the orifice plate 21, and two throttling holes 221 are provided on the throttle plate 22;

[0064] In the second-stage orifice plate group 2, two hollow units 23 are provided on the orifice plate 21, and four throttling holes 221 are provided on the throttle plate 22;

[0065] In the third-stage orifice plate group 2, four hollow units 23 are provided on the orifice plate 21, and eight throttling holes 221 are provided on the throttle plate 22;

[0066] In the fourth-stage orifice plate group 2, eight hollow units 23 are provided on the orifice plate 21, and 16 throttling holes 221 are provided on the throttle plate 22;

[0067] In the fifth-stage orifice plate group 2, 16 hollow units 23 are arranged on the orifice plate 21, and 32 throttling holes 221 are arranged on the throttling plate 22. The 32 throttling holes 221 provide 32 outlets for the gas working medium to achieve the purpose of uniform flow.

[0068] In a specific embodiment, the mounting orifice plate 1 and the orifice plate group 2 can be welded together by diffusion welding. The parts of the mounting orifice plate 1, the orifice slot plate 21 and the throttle plate 22 that cooperate with each other adopt an annular structure of the same shape, and the inner diameter and outer diameter of each annular structure are equal.

[0069] In a specific embodiment, the mounting hole plate 1, the hole slot plate 21 and the throttle plate 22 are all processed by machining or laser etching. To ensure that each hole slot plate 21 and the throttle plate 22 can evenly distribute the flow, it is necessary to ensure that the machining accuracy of the mounting hole plate 1, the hole slot plate 21 and the throttle plate 22 meets ±1%. Among them, the size of the throttle hole 221 on the throttle plate 22 is 50μm to 150μm. The machining accuracy has a great influence on the flow resistance of the electric propulsion anode gas distributor, and the laser etching process is preferably used.

[0070] like Figure 7 As shown in the figure, for the basic fluid unit, the gas state parameters at the outlet of the electric propulsion anode gas distributor can be obtained by iterative calculation of the following formula. The state parameters can be used to check whether the designed electric propulsion anode gas distributor meets the engineering requirements.

[0071] Among them, the mathematical characteristic model of the fluid unit is:

[0072] (1) Traffic relationship:

[0073] Q 11=Q'21+Q'22=Q 21 +Q 22 ,

[0074] Q' 21 =Q' 22 =Q 21 =Q 22 ,

[0075] Among them, Q 11 Indicates the mass flow rate of the gas working fluid at the inlet; Q' 21 represents the mass flow rate of the gas working medium in channel I; Q' 22 It represents the mass flow rate of gas working medium in channel II; Q 21 It represents the mass flow rate of the gas working medium at the pore I (i.e. the mass flow rate of the gas working medium at the next level entrance); Q 22 It represents the mass flow rate of the gas working medium at the pore II (i.e. the mass flow rate of the gas working medium at the next level entrance);

[0076] (2) The channel can be regarded as laminar flow, and the pressure relationship before and after channel I is:

[0077]

[0078] Among them, P 11 represents the pressure before channel I (i.e. the inlet pressure of the basic fluid unit); P 21 represents the pressure after channel I (i.e. the pressure of the gas working medium in cavity I); T 11 represents the absolute temperature in channel I; D g represents the equivalent width of channel I; l g represents the equivalent length of channel I; T 11 represents the absolute temperature of channel I; μ represents the viscosity coefficient of the gas working fluid; ρ represents the density of the gas working fluid; R represents the gas constant.

[0079] (3) The pressure at the unit inlet is:

[0080]

[0081] Among them, V 11 It represents the volume of the unit inlet; T0 represents the absolute temperature upstream of the unit inlet; Q0 represents the mass flow rate upstream of the unit inlet.

[0082] (4) The pressure of cavity I is:

[0083]

[0084] Among them, V 21 Represents the volume of cavity I.

[0085] (5) The flow of the gas working medium in channel I can be expressed as:

[0086]

[0087]

[0088]

[0089] Among them, C d represents the flow coefficient; A represents the pore cross-sectional area; k represents the gas adiabatic index; T 21 Indicates the upstream absolute temperature; C d Indicates the flow coefficient; P 21 represents the pressure upstream of the pore; P3 represents the pressure downstream of the pore; P cr Indicates the critical pressure ratio.

[0090] Different from the solution of using multi-stage buffer chamber to achieve flow balance in the prior art, the electric propulsion anode gas distributor provided in the embodiment of the present application sets a three-dimensional flow channel through a multilayer plate, and continuously divides the gas working medium in the three-dimensional flow channel so that the gas working medium is evenly distributed at the outlet, thereby achieving the purpose of flow balance. By setting a series of resistive elements (i.e., pores and channels) and capacitive elements (i.e., cavities) in series, the flow rate of the gas working medium is reduced, the residence time of the gas in the electric propulsion channel is prolonged, and the ionization efficiency of the electric propulsion is improved, and the degree of gas homogenization can also be improved.

[0091] The above description is only an illustrative specific implementation manner of the present application. Without departing from the concept and principle of the present application, any equivalent changes and modifications made by any technician in the field should fall within the scope of protection of the present application.

Claims

1. An electric propulsion anode gas distributor, characterized in that: It includes a mounting hole plate and a hole plate group, one side of the mounting hole plate is connected with an air inlet pipe and a conductive column, the air inlet pipe is used to input the initial gas working medium, and the conductive column is used to connect an external power supply; The other side of the mounting hole plate is connected in sequence with an n-stage hole plate group, where n is a natural number; The orifice plate group includes an orifice plate and a throttle plate, the air inlet pipe is connected to the orifice plate through the mounting orifice plate, the orifice plate is used to form a channel and a cavity with the throttle plate, and the throttle plate is used to form a hole channel with the orifice plate; the channel, cavity and hole channel are used to form a three-dimensional flow channel, and the three-dimensional flow channel is used to evenly flow the input gas working medium; The hole slot plate in the orifice plate group of the nth level is provided with 2 n-1 a hollow unit; the hollow unit comprises a middle through hole, a first slit, a first end through hole, a second slit and a second end through hole, the middle through hole is connected with the first end through hole through the first slit, and is connected with the second end through hole through the second slit; The throttle plate in the orifice plate group of the nth stage is provided with 2 n throttle holes, each of the throttle holes is evenly spaced on the throttle plate along the circumference of the throttle plate; The throttling holes on the throttling plates in the orifice plate group at the same level are respectively connected to the first end through holes and the second end through holes on the orifice slot plate, and the middle through holes on the orifice slot plate are covered by the throttling plates; The throttling holes on the throttling plates in the orifice plate groups of adjacent stages are respectively connected to the middle through holes on the orifice slot plates.

2. The electric propulsion anode gas distributor according to claim 1, characterized in that: The parts of the mounting hole plate, the hole slot plate and the throttle plate that match each other adopt an annular structure with the same shape, and the mounting hole plate, the hole slot plate and the throttle plate are welded together.

3. The electric propulsion anode gas distributor according to claim 1, characterized in that: When n is 1, the other side of the mounting orifice plate is connected to a primary orifice plate group, and a hollow unit is arranged on the orifice plate in the orifice plate group, and the length of the hollow unit is half of the circumference of the orifice plate.

4. The electric propulsion anode gas distributor according to claim 1, characterized in that: When n is a natural number greater than 1, the other side of the mounting hole plate is connected to two or more hole plate groups, and a hollow unit is arranged on the hole slot plate in the first hole plate group connected to the mounting hole plate, and the length of the hollow unit is half of the circumference of the hole slot plate; the 2 n-1 The hollow units are evenly spaced along the circumference of the hole slot plate.

5. The electric propulsion anode gas distributor according to claim 4, characterized in that: When n is 5, the other side of the mounting orifice plate is sequentially connected with five-stage orifice plate groups, wherein in the first-stage orifice plate group, one hollow unit is arranged on the orifice slot plate, and two throttling holes are arranged on the throttling plate; in the second-stage orifice plate group, two hollow units are arranged on the orifice slot plate, and four throttling holes are arranged on the throttling plate; in the third-stage orifice plate group, four hollow units are arranged on the orifice slot plate, and eight throttling holes are arranged on the throttling plate; in the fourth-stage orifice plate group, eight hollow units are arranged on the orifice slot plate, and 16 throttling holes are arranged on the throttling plate; in the fifth-stage orifice plate group, 16 hollow units are arranged on the orifice slot plate, and 32 throttling holes are arranged on the throttling plate; the 32 throttling holes provide 32 outlets for the gas working medium.

6. The electric propulsion anode gas distributor according to claim 1, characterized in that: The size of the throttling hole is 50 μm to 150 μm.

7. The electric propulsion anode gas distributor according to claim 1, characterized in that: The mounting hole plate, the hole slot plate and the throttle plate are all processed by machining or laser etching technology.

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