CN117231452A - Hall thruster with middle-arranged electron source and operation method thereof - Google Patents
Hall thruster with middle-arranged electron source and operation method thereof Download PDFInfo
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- CN117231452A CN117231452A CN202311481599.0A CN202311481599A CN117231452A CN 117231452 A CN117231452 A CN 117231452A CN 202311481599 A CN202311481599 A CN 202311481599A CN 117231452 A CN117231452 A CN 117231452A
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Abstract
The application discloses a Hall thruster with an electron source in the middle and an operation method thereof, and belongs to the field of thrusters. Comprising the following steps: the magnetic conduction bottom plate, the magnetic conduction shell, the inner magnetic assembly and the central copper column; an electron extracting material for emitting electrons at a high voltage; the extraction grid is used for extracting electrons emitted by the electron extraction material; an inner magnetic pole arranged on the central copper column, and an electron extraction material arranged on the inner magnetic pole; a gate insulator and an inner guard ring for maintaining electrical insulation between the extraction gate and the inner pole; the outer protection ring is used for forming a discharge channel in cooperation with the inner protection ring; a gas distributor for distributing neutral gas into the discharge channel; an anode insulating base for maintaining electrical insulation between the gas distributor and other components. The application has the beneficial effect of providing the Hall thruster arranged in the Hall thruster in the electron source.
Description
Technical Field
The application relates to the technical field of thrusters, in particular to a Hall thruster with an electron source arranged in the middle and an operation method thereof.
Background
As shown in fig. 16, which is a schematic diagram of the operation of the hall thruster, the inner magnetic pole, the inner magnetic element, the outer magnetic pole and the outer magnetic element generate a magnetic field in the radial direction downstream of the discharge channel. The anode applies a high potential to form an axial electric field within the discharge channel, thereby forming an orthogonal electromagnetic field downstream of the discharge channel. Some electrons generated by the electron source migrate into the discharge channel under the attraction of high potential of the anode and are restrained by the orthogonal electromagnetic field to do circumferential Hall drift, in the process, the electrons and neutral gas axially moving along the discharge channel are subjected to ionization collision to generate ions, and the ions are rapidly ejected out of the discharge channel to a speed of ten meters per second under the action of potential drop generated by the electrons and high voltage of the anode to form beam ions to generate thrust. Another portion of the electrons generated by the electron source migrate toward the beam under the attraction of the beam ion potential and are neutralized by Shu Liuli at a remote location where the potential is near zero.
Because the cathode is arranged outside the thruster body, the external electron source can cause asymmetry of the plume of the thruster and can influence the working performance of the Hall thruster to a certain extent, more Hall thrusters with medium and high power integrate the electron source into the center part of the Hall thruster in recent years, on one hand, the uniform distribution of electrons is realized, on the other hand, the energy loss of electrons crossing the magnetic interface is avoided, and the performance of the thruster is effectively improved.
The electron source center-setting technology of the Hall thruster has obvious defects based on the improvement of a plurality of performances of the thruster, and firstly, the center-setting electron source needs to occupy part of the volume of the inner magnetic pole of the Hall thruster, so that the inner magnetic pole design becomes difficult. Secondly, aiming at the middle-high power Hall thruster, the electron source is generally a hollow cathode electron source, the working temperature of the electron source is thousands of DEG C, the temperature of the shell is at least hundreds of DEG C, the internal magnetic pole and the internal excitation unit can be greatly influenced, and extremely high requirements are put on the internal heat insulation design. Therefore, the electron source center-set technology is generally only suitable for Hall thrusters with larger volume and power.
For a micro-power Hall thruster, if an intermediate electron source is required, only a field emission electron source can be used, but the field emission electron source has high requirements on grid voltage, and can reach thousands of volts generally, which presents a great challenge for the insulation of the thruster. On the other hand, the field emission electron source is forcedly integrated into the microminiature Hall thruster, so that the circuit complexity and the engineering quantity are greatly increased, the circuit design and the assembly design difficulty of the field emission electron source are far higher than those of the Hall thruster, and the engineering is irresistible. In summary, current microminiature hall thrusters are limited by volume, circuit, insulation and discharge voltage, and cannot effectively integrate an electron source into the thruster center, so that the centering of the electron source cannot be achieved.
Disclosure of Invention
The summary of the application is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. The summary of the application is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
To solve the technical problems mentioned in the background section above, some embodiments of the present application provide a hall thruster with an electron source disposed therein, including:
a magnetically conductive bottom plate;
the magnetic conduction shell is internally provided with a cavity and is connected with the magnetic conduction bottom plate;
an inner magnetic assembly positioned within the cavity;
the central copper column penetrates through the magnetic conduction bottom plate;
the mounting groove is formed on the central copper column and used for placing the inner magnetic assembly;
an electron extracting material for emitting electrons at a high voltage;
the extraction grid is used for extracting electrons emitted by the electron extraction material;
an inner magnetic pole arranged on the central copper column, and an electron extraction material arranged on the inner magnetic pole;
a gate insulator and an inner guard ring for maintaining electrical insulation between the extraction gate and the inner pole;
the outer protection ring is used for forming a discharge channel in cooperation with the inner protection ring;
a gas distributor for distributing neutral gas into the discharge channel;
an anode insulating base for maintaining electrical insulation between the gas distributor and other components.
The top of the inner magnetic pole is provided with a growth groove, and the electron extraction material is arranged in the growth groove.
The central copper column is of a multi-section structure, the upper part and the lower part of the central copper column are both fixed bolts, and the mounting groove is arranged in the middle of the central copper column; the inner magnetic pole is of a convex structure, and the upper part of the central copper column is in threaded connection with the inner magnetic pole.
The extraction grid is provided with an extraction grid hole and a grid bolt, the inner magnetic pole is provided with a grid mounting hole for positioning the grid bolt, and the position of the extraction grid hole is corresponding to the position of the growth groove.
The inner protection ring is provided with a first notch, an electron leading-out hole, a second notch and a third notch, a leading-out grid is arranged in the first notch, and a grid bolt is arranged in the second notch in a penetrating way; the third notch is used for positioning and installing an inner magnetic pole, and the upper end of the inner magnetic pole is arranged in the third notch in a penetrating way.
An inner boss for conducting a magnetic field in the radial direction is arranged on the magnetic conduction shell, and the inner boss is formed by extending the upper end of the magnetic conduction shell inwards in the radial direction.
The outer protection ring is arranged on the magnetic conductive shell, the top of the outer protection ring is provided with a ring boss formed by upward extension, and the ring boss is abutted with the inner boss.
The magnetic conduction bottom plate is provided with a first mounting hole, a second mounting hole, a third mounting hole and a fourth mounting hole, the lower part of the central copper column is penetrated in the first mounting hole and is in threaded connection with the first mounting hole, and the anode insulating seat is assembled on the magnetic conduction bottom plate through the third mounting hole; the outer side of the magnetic conductive shell is provided with a plurality of mounting bosses which are connected with the second mounting holes through screws; the fourth mounting hole is used for mounting external facilities.
The positions of the electron extraction holes are corresponding to the positions of the extraction grid holes and the growth grooves, and the diameters of the electron extraction holes are larger than those of the extraction grid holes and the growth grooves.
The grid insulation seat is sleeved on the grid bolt and is positioned in the second notch; the grid insulating seat is provided with a convex seat, and the convex seat is provided with a grid mounting hole for a grid bolt to pass through.
The application also discloses a Hall thruster operation method for the middle-arranged electron source, which comprises the following steps:
s1: one end of the positive electrode of the high-voltage power supply Ps is connected to a thruster gas distributor, and a switch K2 is temporarily opened;
s2: the extraction grid is connected with one end of a high-voltage power supply Ps after being connected with the VDC, and a switch K1 is temporarily turned on;
s3: connecting the negative end of the high-voltage power supply Ps to the shell of the thruster to complete all circuit connection;
s4: starting a high-voltage power supply Ps, adjusting VD to provide proper voltage for the extraction grid, and then starting K1;
s5: injecting a neutral gas into the gas distributor;
s6: starting K2, obtaining high potential on the gas distributor, igniting the thruster
The application has the beneficial effects that: the Hall thruster of the middle-set electron source is not required to greatly change the structure of the thruster.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application, are incorporated in and constitute a part of this specification. The drawings and their description are illustrative of the application and are not to be construed as unduly limiting the application.
In addition, the same or similar reference numerals denote the same or similar elements throughout the drawings. It should be understood that the figures are schematic and that elements and components are not necessarily drawn to scale.
In the drawings:
fig. 1 is a schematic structural view of the present application.
Fig. 2 is a schematic perspective view of the present application.
Fig. 3 is a schematic structural diagram of a magnetically conductive bottom plate in the present application.
Fig. 4 is a schematic structural view of the housing in the present application.
Fig. 5 is a schematic structural diagram of a central copper pillar according to the present application.
Fig. 6 is a schematic diagram of a structure of an extraction gate according to the present application.
Fig. 7 is a schematic diagram of the structure of the inner magnetic pole in the present application.
Fig. 8 is a schematic diagram of the structure of the inner magnetic pole in the present application.
Fig. 9 is a schematic diagram showing the cooperation between the inner guard ring and the extraction gate in the present application.
Fig. 10 is a schematic diagram of the structure of the inner protection ring in the present application.
FIG. 11 is a schematic diagram showing a structure of an inner protection ring according to the present application.
Fig. 12 is a schematic structural diagram of a gate insulating base in the present application.
Fig. 13 is a schematic structural view of an outer protection ring according to the present application.
FIG. 14 is a schematic diagram of the operation method of the present application.
FIG. 15 is a schematic diagram of a second embodiment of the method of operation of the present application.
Fig. 16 is a schematic diagram of the operation of a hall thruster in the prior art.
Detailed Description
Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.
It should be noted that, for convenience of description, only the portions related to the present application are shown in the drawings. Embodiments of the present disclosure and features of embodiments may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in this disclosure are merely used to distinguish between different devices, modules, or units and are not used to define an order or interdependence of functions performed by the devices, modules, or units.
It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those of ordinary skill in the art will appreciate that "one or more" is intended to be understood as "one or more" unless the context clearly indicates otherwise.
The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1-15, a hall thruster with an electron source in the middle comprises a magnetic conduction bottom plate 1, a magnetic conduction shell 2, an inner magnetic assembly 3, a central copper column 4, a mounting groove 41, an extraction grid 5, an electron extraction material 6, an inner magnetic pole 7, a grid insulation seat 8, an inner protection ring 9, an outer protection ring 10, a gas distributor 11 and an anode insulation seat 12. The magnetic conduction shell 2 is internally provided with a cavity, the upper part and the lower part are both provided with openings, the magnetic conduction shell 2 is connected with the magnetic conduction bottom plate 1, and the magnetic conduction shell 2 and the magnetic conduction bottom plate 1 form a cylindrical inner space to form a basic structure of the Hall thruster. The inner magnetic assembly 3 is the magnetic field of the Hall thruster, and the inner magnetic assembly 3 can be an electromagnetic excitation assembly or a permanent magnet excitation assembly. The inner magnetic assembly 3 is positioned in the cavity, and the central copper column 4 is arranged on the magnetic conduction bottom plate 1 in a penetrating way. A mounting groove 41 is formed on the central copper pillar 4 for placing the inner magnetic assembly 3. An electron extracting material 6 for emitting electrons at a high voltage; an extraction gate 5 for extracting electrons emitted from the electron extracting material 6; an inner magnetic pole 7 arranged on the central copper column 4, and an electron extraction material 6 arranged on the inner magnetic pole 7; a gate insulator 8 and an inner guard ring 9 for maintaining electrical insulation between the extraction gate 5 and the inner pole 7; an outer guard ring 10 for forming a discharge channel in cooperation with the inner guard ring 9; a gas distributor 11 for distributing neutral gas into the discharge channel; an anode insulating base 12 for maintaining electrical insulation between the gas distributor 11 and other components.
The magnetic conduction base plate 1, the magnetic conduction shell 2, the inner magnetic assembly 3, the central copper column 4, the inner magnetic pole 7, the inner protection ring 9, the outer protection ring 10, the anode gas distributor 11 and the anode insulating base 12 form a basic Hall thruster. The extraction grid 5, the electron extraction material 6, the inner magnetic pole 7, the grid insulating base 8 and the inner protection ring 9 form a field emission electron source assembly for providing electrons for discharge ionization and neutralization of the Hall thruster. The field emission electron source assembly is divided into four basic structures, namely a growth substrate, an electron extraction material, an extraction grid and an insulation structure, wherein the inner magnetic pole 7 plays the role of the extraction substrate, and the inner protection ring 9 and the grid insulation seat 8 jointly form the insulation structure. The field emission electron source component is integrated into the inner magnetic pole through an exquisite design, and simultaneously, the kilovolt working voltage of the thruster is connected in parallel to the grid electrode of the field emission electron source for leading out electrons without an additional high-voltage source. According to the application, through mechanical design and circuit design, the integrated middle-set of the electronic source is realized under the condition that the structure and the circuit complexity of the thruster are not greatly changed, the working performance of the Hall thruster can be effectively improved, and the symmetry of plume is ensured.
As shown in fig. 3, the magnetically conductive bottom plate 1 is provided with a first mounting hole 11, a second mounting hole 12, a third mounting hole 13 and a fourth mounting hole 14, the lower part of the central copper column 4 is penetrated in the first mounting hole 11 and is in threaded connection with the first mounting hole 11, the anode insulating base 12 is assembled on the magnetically conductive bottom plate 1 through the third mounting hole 13, and the fourth mounting hole 14 is used for mounting external facilities. Preferably, the angular interval between the second mounting hole 12 and the fourth mounting hole 14 on the magnetic conduction bottom plate 1 is 60 degrees, and six mounting holes are uniformly distributed in the circumferential direction of the magnetic conduction bottom plate 1. The number of the third mounting holes 13 is four, the angular interval is 90 degrees, and the third mounting holes are in the same phase with one of the second mounting holes 12 and the fourth mounting holes 14 and are uniformly distributed in the circumferential direction of the magnetic conduction bottom plate 1. Optionally, the diameter of the first mounting hole is slightly larger than and nearly equal to the diameter of the central copper post lower fixing bolt 43 for precise mounting positioning.
As shown in fig. 4, a plurality of mounting bosses 21, preferably 3, are provided on the outer side of the magnetic conductive housing 2, the angular intervals are 120 ° and uniformly distributed in the circumferential direction of the magnetic conductive housing 2, and the fourth mounting holes 14 are also preferably 3, and the mounting bosses 21 are connected to the second mounting holes 12 by screws. The magnetic conductive housing 2 is provided with an inner boss 22 for conducting a magnetic field in a radial direction, and the inner boss 22 is formed by extending the upper end of the magnetic conductive housing 2 inward in a radial direction.
As shown in fig. 5, the central copper pillar 4 has a multi-stage structure, the upper and lower parts of the central copper pillar 4 are fixing bolts 42, the mounting groove 41 is provided in the middle 41 of the central copper pillar 4, and the inside of the central copper pillar 4 is hollow to form a through hole 44 for the lead to pass through.
As shown in fig. 6, the extraction grid 5 has an extraction grid hole 51 and a grid bolt 52, and the position of the grid mounting hole 71 on the inner pole 7 is set corresponding to the grid bolt 52, and the position of the extraction grid hole 51 is set corresponding to the position of the growth groove 72. A high voltage is applied to the extraction gate 5 to extract electrons emitted from the electron extracting material 6 from the extraction gate holes 51, thereby forming free electrons. Preferably, the form of the extraction grid holes 51 can be an array square hole, a regular hexagon hole, a round hole or other forms.
As shown in fig. 7 and 8, the inner magnetic pole 7 has a convex structure, and the upper portion of the central copper pillar 4 is in threaded connection with the inner magnetic pole 7. The inner magnetic pole 7 is provided with a grid mounting hole 71, a growth groove 72, a lead hole 73 and an internal thread 74, the grid mounting hole 71 is used for positioning the grid bolt 52, the growth groove 72 is arranged at the top of the inner magnetic pole 7, and the electron extraction material 6 is arranged in the growth groove 72. Preferably, the electron extracting material 6 may be grown in a circumferential distribution as shown, an array distribution, or other distribution. The lead hole 73 is for guiding a high-voltage wire, and an internal thread 74 is provided at the lower portion of the inner magnetic pole 7, and is screwed with the central copper post 4 through the internal thread 74.
As shown in fig. 9 to 11, the inner protection ring 9 has a first notch 91, an electron extraction hole 92, a second notch 93, and a third notch 94, the extraction grid 5 is disposed in the first notch 91, and the grid bolt 52 is disposed in the second notch 93; the third notch 94 is used for positioning and installing the inner magnetic pole 7, and the upper end of the inner magnetic pole 7 is arranged in the third notch 94 in a penetrating way. Preferably, the positions of the electron extraction holes 92 are set corresponding to the positions of the extraction gate holes 51 and the growth grooves 72, and the diameters of the electron extraction holes 92 are larger than the diameters of the extraction gate holes 51 and the growth grooves 72.
The gate insulator 8 is sleeved on the gate bolt 52, and the gate insulator 8 is located in the second notch 93. As shown in fig. 12, the gate insulator 8 is provided with a boss 81, and the boss 81 is provided with a gate mounting hole 82 through which the gate bolt 52 passes. When assembled, the gate bolt 52 passes through the second slot 93 on the inner guard ring 9 and the gate mounting hole 82 on the gate insulator mount 8.
As shown in fig. 13, the outer protection ring 10 is provided on the magnetic conductive housing 2, and the top of the outer protection ring 10 has a ring boss 101 extending upward, and the ring boss 101 abuts against the inner boss 22. The outer side of the inner protection ring 9 forms the inner side of the discharge channel, the inner side of the outer protection ring 10 forms the outer side of the discharge channel, the ring boss 101 is used as a part of the outer side of the discharge channel, and the part wrapped by the inner protection ring 9 and the outer protection ring 10 is the discharge channel of the Hall thruster.
The gas distributor 11 also serves as a place where the high discharge voltage is applied, and attracts electrons from the outside or from the inside, and gives energy to the electrons, so that the electrons and the neutral gas are ion-collided to generate plasma. The anode insulator base 12 also enables an unknown positioning of the gas distributor 11, the base of the insulator base 12 being threaded for fixing the insulator post 12 to the magnetically permeable base plate 1.
Optionally, the materials of the magnetic conduction bottom plate 1, the magnetic conduction shell 2 and the inner magnetic pole 7 can be magnetic conduction materials, such as pure iron DT4, 1J22 and the like;
alternatively, the material of the central copper pillar 4 may be copper or others;
alternatively, the material of the extraction grid 5 may be stainless steel or others;
alternatively, the electron extracting material 6 may be carbon nanotubes or diamond or others;
alternatively, the material of the gate insulating base 8 may be ceramic, corundum, PEEK or others;
alternatively, the material of inner guard ring 9 and outer guard ring 10 may be ceramic or otherwise;
alternatively, the material of the gas distributor 11 may be stainless steel, molybdenum or others; the device can be an axial air outlet structure or any other air distributor;
alternatively, the material of the anode insulating base 12 may be ceramic, corundum, PEEK, polytetrafluoroethylene, or others.
The specific assembly method is as follows:
s1: first, the gate bolt 52 is passed through the gate mounting hole 71 and the second notch 93, and the main body portion of the lead-out gate 5 is sunk into the first notch 91 while the inner magnetic pole 7 is placed in the third notch 94;
s2: penetrating the grid insulating base 8 into the first notch 91 and the grid bolt 52, and fixing and locking by using nuts to complete the assembly of the field emission electron source assembly;
s3: fixedly connecting the field emission electron source assembly with the central copper column 4 through fixed threads on the inner magnetic pole 7, and further fixing the assembly on the magnetic conduction bottom plate 1;
s4: fixing the gate connection wire to the gate bolt 52 to form an electrical connection, and then connecting the wire to an external circuit through the wire lead hole 73 and the through hole 44 in sequence;
s5: positioning and mounting the gas distributor 11 and the anode insulating base 12 on the magnetic conduction bottom plate 1;
s6: mounting the magnetic conductive shell 2 on the magnetic conductive bottom plate 1;
s7: and (5) performing external circuit connection to complete assembly.
The specific operation method is as follows:
the following is a first embodiment of the operation method provided by the present application, as shown in fig. 14:
s1: one end of the positive electrode of the high-voltage power supply Ps is connected to the thruster gas distributor 11 to provide voltage for plasma discharge, the switch K2 is temporarily opened, and the anode enters a standby state;
s2: the extraction grid 5 is connected with one end of a high-voltage power supply Ps after being connected with the VDC, provides voltage for electron extraction, temporarily opens a switch K1, and enables the cathode to enter a standby state;
s3: connecting the negative end of the high-voltage power supply Ps to the shell of the thruster to complete all circuit connection;
s4: firstly, starting a high-voltage power supply Ps, setting the voltage as a normal ignition voltage, then adjusting VDC to provide a proper voltage for an extraction grid 5, then starting K1, operating a field emission cathode, and emitting free electrons outwards;
s5: neutral gas is injected into the gas distributor 11, and after the neutral gas is uniformly dispersed into the discharge channel, all preparation work before ignition is completed by the Hall thruster;
s6: and K2 is started, a high potential is obtained on the gas distributor 11, free electrons generated by the field emission electron source move into the discharge channel under the attraction of the high potential of the gas distributor 11 to participate in the ionization process, and the thruster is successfully ignited. Another portion of the electrons generated by the field emission electron source are attracted by the electric potential of the ion plume generated by the thruster and move downstream of the thruster to be neutralized with ions.
The following is a further embodiment of the method of operation provided by the present application, as shown in fig. 15:
this embodiment is substantially similar to embodiment 1, but with the VDC removed on an original basis and the extraction grid 5 connected directly to the gas distributor inside the thruster so that both are at the same voltage and the field emission electron source and anode are at the same voltage. That is, the supply of electrons and the ignition of the thruster start at the same time.
The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the application in the embodiments of the present disclosure is not limited to the specific combination of the above technical features, but encompasses other technical features formed by any combination of the above technical features or their equivalents without departing from the spirit of the application. Such as the above-described features, are mutually substituted with (but not limited to) the features having similar functions disclosed in the embodiments of the present disclosure.
Claims (10)
1. A hall thruster of a centrally located electron source, comprising:
a magnetically conductive bottom plate;
the magnetic conduction shell is internally provided with a cavity and is connected with the magnetic conduction bottom plate;
an inner magnetic assembly positioned within the cavity;
the central copper column penetrates through the magnetic conduction bottom plate;
the mounting groove is formed on the central copper column and used for placing the inner magnetic assembly;
an electron extracting material for emitting electrons at a high voltage;
the extraction grid is used for extracting electrons emitted by the electron extraction material;
an inner magnetic pole arranged on the central copper column, and an electron extraction material arranged on the inner magnetic pole;
a gate insulator and an inner guard ring for maintaining electrical insulation between the extraction gate and the inner pole;
the outer protection ring is used for forming a discharge channel in cooperation with the inner protection ring;
a gas distributor for distributing neutral gas into the discharge channel;
an anode insulating base for maintaining electrical insulation between the gas distributor and other components.
2. The hall thruster of the mid-set electron source of claim 1, wherein: the top of the inner magnetic pole is provided with a growth groove, and the electron extraction material is arranged in the growth groove.
3. The hall thruster of the mid-set electron source of claim 1, wherein: the central copper column is of a multi-section structure, the upper part and the lower part of the central copper column are both fixed bolts, and the mounting groove is formed in the middle of the central copper column; the inner magnetic pole is of a convex structure, and the upper part of the central copper column is in threaded connection with the inner magnetic pole.
4. The hall thruster of the mid-set electron source according to claim 2, wherein: the extraction grid is provided with an extraction grid hole and a grid bolt, the inner magnetic pole is provided with a grid mounting hole for positioning the grid bolt, and the position of the extraction grid hole is corresponding to the position of the growth groove.
5. The hall thruster of the mid-set electron source according to claim 4, wherein: the inner protection ring is provided with a first notch, an electron leading-out hole, a second notch and a third notch, a leading-out grid is arranged in the first notch, and a grid bolt is arranged in the second notch in a penetrating way; the third notch is used for positioning and installing an inner magnetic pole, and the upper end of the inner magnetic pole is arranged in the third notch in a penetrating way.
6. The hall thruster of the mid-set electron source of claim 1, wherein: an inner boss for conducting a magnetic field in the radial direction is arranged on the magnetic conduction shell, and the inner boss is formed by extending the upper end of the magnetic conduction shell inwards in the radial direction.
7. The hall thruster of the mid-set electron source according to claim 6, wherein: the outer protection ring is arranged on the magnetic conductive shell, the top of the outer protection ring is provided with a ring boss formed by upward extension, and the ring boss is abutted with the inner boss.
8. A hall thruster of a mid-set electron source according to claim 3, wherein: the magnetic conduction bottom plate is provided with a first mounting hole, a second mounting hole, a third mounting hole and a fourth mounting hole, the lower part of the central copper column is penetrated in the first mounting hole and is in threaded connection with the first mounting hole, and the anode insulating seat is assembled on the magnetic conduction bottom plate through the third mounting hole; the outer side of the magnetic conductive shell is provided with a plurality of mounting bosses which are connected with the second mounting holes through screws; the fourth mounting hole is used for mounting external facilities.
9. The hall thruster of the mid-set electron source according to claim 5, wherein: the positions of the electron extraction holes are arranged corresponding to the positions of the extraction grid holes and the growth grooves, and the diameters of the electron extraction holes are larger than those of the extraction grid holes and the growth grooves.
10. The method of operating a hall thruster of a centrally located electron source of claim 1, comprising the steps of:
s1: one end of the positive electrode of the high-voltage power supply Ps is connected to a thruster gas distributor, and a switch K2 is temporarily opened;
s2: the extraction grid is connected with one end of a high-voltage power supply Ps after being connected with the VDC, and a switch K1 is temporarily turned on;
s3: connecting the negative end of the high-voltage power supply Ps to the shell of the thruster to complete all circuit connection;
s4: starting a high-voltage power supply Ps, adjusting VD to provide proper voltage for the extraction grid, and then starting K1;
s5: injecting a neutral gas into the gas distributor;
s6: and starting K2, obtaining high potential on the gas distributor, and igniting the thruster.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117823378A (en) * | 2024-03-05 | 2024-04-05 | 国科大杭州高等研究院 | Cylindrical Hall thruster |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2493423A (en) * | 1944-05-29 | 1950-01-03 | Rca Corp | Electron discharge device of the magnetron type |
| US5646476A (en) * | 1994-12-30 | 1997-07-08 | Electric Propulsion Laboratory, Inc. | Channel ion source |
| US20090058305A1 (en) * | 2007-08-31 | 2009-03-05 | California Institute Of Technology | Compact high current rare-earth emitter hollow cathode for hall effect thrusters |
| CN105003409A (en) * | 2015-07-16 | 2015-10-28 | 兰州空间技术物理研究所 | Cathode center layout of Hall thruster |
| US20170284380A1 (en) * | 2016-03-30 | 2017-10-05 | California Institute Of Technology | Hall effect thruster electrical configuration |
| CN107725296A (en) * | 2017-09-01 | 2018-02-23 | 兰州空间技术物理研究所 | A kind of adjustable permanent magnetism hall thruster magnetic structure of magnetic induction intensity |
| CN107850055A (en) * | 2015-07-08 | 2018-03-27 | 赛峰航空器发动机 | Hall effect propeller available for High aititude |
| US20180226217A1 (en) * | 2017-02-03 | 2018-08-09 | Colorado State University Research Foundation | Hall current plasma source having a center-mounted cathode or a surface-mounted cathode |
| CN109441747A (en) * | 2018-11-02 | 2019-03-08 | 北京航空航天大学 | A kind of electric propulsion engine sparking mode |
| CN110439770A (en) * | 2019-07-24 | 2019-11-12 | 北京航空航天大学 | The anode layer hall thruster of Deep integrating hollow cathode |
| CN110894823A (en) * | 2019-12-09 | 2020-03-20 | 哈尔滨工业大学 | Anti-magnetic interference support applied to Hall thruster cluster |
| CN111140452A (en) * | 2019-12-26 | 2020-05-12 | 兰州空间技术物理研究所 | Multi-parameter online adjusting mechanism and method for Hall thruster performance optimization |
| US11540381B1 (en) * | 2019-07-19 | 2022-12-27 | United States Of America As Represented By The Administrator Of Nasa | High propellant throughput hall-effect thrusters |
| WO2023027679A1 (en) * | 2021-08-25 | 2023-03-02 | Частное Акционерное Общество "Фэд" | Stationary ion/plasma engine |
| CN116357537A (en) * | 2023-03-23 | 2023-06-30 | 北京理工大学 | Carbon nano tube field ionization thruster and thrust performance regulation and control method |
-
2023
- 2023-11-09 CN CN202311481599.0A patent/CN117231452B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2493423A (en) * | 1944-05-29 | 1950-01-03 | Rca Corp | Electron discharge device of the magnetron type |
| US5646476A (en) * | 1994-12-30 | 1997-07-08 | Electric Propulsion Laboratory, Inc. | Channel ion source |
| US20090058305A1 (en) * | 2007-08-31 | 2009-03-05 | California Institute Of Technology | Compact high current rare-earth emitter hollow cathode for hall effect thrusters |
| CN107850055A (en) * | 2015-07-08 | 2018-03-27 | 赛峰航空器发动机 | Hall effect propeller available for High aititude |
| CN105003409A (en) * | 2015-07-16 | 2015-10-28 | 兰州空间技术物理研究所 | Cathode center layout of Hall thruster |
| US20170284380A1 (en) * | 2016-03-30 | 2017-10-05 | California Institute Of Technology | Hall effect thruster electrical configuration |
| US20180226217A1 (en) * | 2017-02-03 | 2018-08-09 | Colorado State University Research Foundation | Hall current plasma source having a center-mounted cathode or a surface-mounted cathode |
| CN107725296A (en) * | 2017-09-01 | 2018-02-23 | 兰州空间技术物理研究所 | A kind of adjustable permanent magnetism hall thruster magnetic structure of magnetic induction intensity |
| CN109441747A (en) * | 2018-11-02 | 2019-03-08 | 北京航空航天大学 | A kind of electric propulsion engine sparking mode |
| US11540381B1 (en) * | 2019-07-19 | 2022-12-27 | United States Of America As Represented By The Administrator Of Nasa | High propellant throughput hall-effect thrusters |
| CN110439770A (en) * | 2019-07-24 | 2019-11-12 | 北京航空航天大学 | The anode layer hall thruster of Deep integrating hollow cathode |
| CN110894823A (en) * | 2019-12-09 | 2020-03-20 | 哈尔滨工业大学 | Anti-magnetic interference support applied to Hall thruster cluster |
| CN111140452A (en) * | 2019-12-26 | 2020-05-12 | 兰州空间技术物理研究所 | Multi-parameter online adjusting mechanism and method for Hall thruster performance optimization |
| WO2023027679A1 (en) * | 2021-08-25 | 2023-03-02 | Частное Акционерное Общество "Фэд" | Stationary ion/plasma engine |
| CN116357537A (en) * | 2023-03-23 | 2023-06-30 | 北京理工大学 | Carbon nano tube field ionization thruster and thrust performance regulation and control method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117823378A (en) * | 2024-03-05 | 2024-04-05 | 国科大杭州高等研究院 | Cylindrical Hall thruster |
| CN117823378B (en) * | 2024-03-05 | 2024-05-28 | 国科大杭州高等研究院 | Cylindrical Hall thruster |
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| CN117231452B (en) | 2024-02-13 |
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