CN115653860A - Cathode pole shoe assembly of riveting divergent field ion thruster - Google Patents
Cathode pole shoe assembly of riveting divergent field ion thruster Download PDFInfo
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- CN115653860A CN115653860A CN202211314663.1A CN202211314663A CN115653860A CN 115653860 A CN115653860 A CN 115653860A CN 202211314663 A CN202211314663 A CN 202211314663A CN 115653860 A CN115653860 A CN 115653860A
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- pole shoe
- cathode pole
- baffle
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- ion thruster
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Abstract
The application relates to the technical field of aerospace propulsion, in particular to a cathode pole shoe assembly of a riveting divergent field ion thruster, which comprises a cathode pole shoe and a baffle plate, wherein: the cathode pole shoe and the baffle are different in material type; a clamping groove is arranged on the cathode pole shoe; the baffle is provided with a clamping jaw; the clamping jaw on the baffle is connected with the clamping groove on the cathode pole shoe through a rivet, and the baffle is fixed on the cathode pole shoe. On the basis of not changing the structural design scheme and material selection of the cathode pole shoe and the baffle, the connection fastening mode is improved by optimizing the technical scheme of the connection process, so that the reliable connection of heterogeneous refractory materials in a plasma environment under strong electromagnetic field coupling is realized, the technical risks of welding of the baffle and falling of the structure of the baffle caused by plasma sputtering are avoided, the long service life and high reliability of the cathode pole shoe assembly in rail application are ensured, and the engineering application of the divergent field ion thruster is effectively promoted.
Description
Technical Field
The application relates to the technical field of aerospace propulsion, in particular to a cathode pole shoe assembly of a riveting divergent field ion thruster.
Background
The cathode pole shoe and the baffle plate of the divergent field ion thruster are key parts of a discharge chamber of the thruster, the structural size and the material characteristics of the cathode pole shoe directly influence the magnetic circuit configuration and the magnetic field efficiency of the discharge chamber, and the structural size and the material characteristics of the baffle plate determine the transport channel of original electrons and the sputtering resistance under the plasma environment.
Based on different influence factors, differential scheme design and material selection are required to be respectively carried out on the cathode pole shoe and the baffle plate in the design process of the discharge chamber, so that the performance of the discharge chamber is optimized. According to the basic characteristics of the divergent field ion thruster, in order to realize the long service life, high performance and high reliability application of the thruster in a rail, the baffle plate must be firmly and reliably fastened in the cathode pole shoe, and in a plasma environment under strong electromagnetic field coupling, the reliable connection of heterogeneous materials becomes a problem which must be solved in the integrated manufacturing process of the thruster, and is also one of key technologies which must be overcome when the divergent field ion thruster is realized in the rail engineering application.
In the prior art, the conventional screw cannot be adopted for screwing due to the restriction of factors such as an operation space, the structural dimension of the thruster, satellite design and construction specifications and the like, and under the condition, the actual materials of the cathode pole shoe and the baffle are finally determined in a compromise mode by sacrificing part of performance and reliability level of the thruster on the basis of the scheme design. At the present stage, the cathode pole shoe and the baffle are made of alloy materials, special materials which can be welded with the cathode pole shoe and the baffle are selected to be made into transition parts, and finally the connection between the cathode pole shoe and the baffle is realized in a welding mode. However, long-term performance tests and service life tests show that the method for connecting the cathode pole shoe and the baffle plate by using the transition part in a welding mode has the major defects, mainly including obvious welding seam thermal stress, easy generation of cracks, low welding pass rate, poor sputtering resistance and serious limitation on the reliability and the service life of the discharge chamber.
Disclosure of Invention
The application provides a riveted divergent field ion thruster cathode pole shoe assembly, which realizes the reliable connection of heterogeneous refractory materials in a plasma environment under strong electromagnetic field coupling, and effectively promotes the engineering application of the divergent field ion thruster.
In order to achieve the above object, the present application provides a riveted divergent field ion thruster cathode pole shoe assembly comprising a cathode pole shoe and a baffle plate, wherein: the cathode pole shoe and the baffle are different in material type; a clamping groove is arranged on the cathode pole shoe; the baffle is provided with a clamping jaw; the clamping jaw on the baffle is connected with the clamping groove on the cathode pole shoe through a rivet, and the baffle is fixed on the cathode pole shoe.
Furthermore, the cathode pole shoe is made of alloy with high Curie temperature and high saturation magnetic induction intensity.
Further, the baffle is made of carbon fiber composite materials.
Furthermore, baffle and jack catch be integrated into one piece structure.
Furthermore, the structure size of the clamping jaw is the same as that of the clamping groove, and connecting holes corresponding to each other are formed in the jaw head of the clamping jaw and the clamping groove.
Furthermore, the rivet connects the claw head of the claw with the clamping groove through the connecting hole, and then the baffle is fixedly assembled on the cathode pole shoe.
Furthermore, the number of the clamping jaws and the number of the clamping grooves are all more than or equal to 3.
The invention provides a riveting divergent field ion thruster cathode pole shoe assembly which has the following beneficial effects:
on the basis of not changing the structural scheme design and material selection of the cathode pole shoe and the baffle, the connection fastening mode is improved by optimizing the technical scheme of the connection process, so that the reliable connection of heterogeneous refractory materials in a plasma environment under strong electromagnetic field coupling is realized, the technical risks of welding of the baffle caused by plasma sputtering and falling of the structure of the baffle are avoided, the long service life and high reliability of the cathode pole shoe assembly in rail application are ensured, and the engineering application of the divergent field ion thruster is effectively promoted.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is an overall schematic view of a riveted divergent field ion thruster cathode pole shoe assembly provided in accordance with an embodiment of the present application;
FIG. 2 is a schematic view of a cathode pole piece provided in accordance with an embodiment of the present application;
in the figure: 1-baffle, 2-cathode pole shoe, 3-claw, 4-neck, 5-rivet, 6-connecting hole.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1-2, the present application provides a riveted divergent field ion thruster cathode pole shoe assembly, comprising a cathode pole shoe 2 and a baffle plate 1, wherein: the cathode pole shoe 2 and the baffle plate 1 are different in material type; a clamping groove 4 is arranged on the cathode pole shoe 2; the baffle 1 is provided with a claw 3; the claw 3 on the baffle plate 1 is connected with the clamping groove 4 on the cathode pole shoe 2 through the rivet 5, and the baffle plate 1 is fixed on the cathode pole shoe 2.
Specifically, the riveting technical scheme based on the titanium rivet is adopted for the cathode pole shoe assembly of the riveting divergent field ion thruster provided by the embodiment of the application, reliable connection of different types of refractory materials can be achieved, and the problems that welding seams connected in the existing welding mode are obvious in thermal stress, easy to crack, low in welding pass rate, poor in sputtering resistance and seriously restricting reliability and service life of a discharge chamber are solved. In this application embodiment, cathode pole shoe 2 sets up in the below, and baffle 1 is fixed in cathode pole shoe 2's top, and cathode pole shoe 2 and baffle 1 are the refractory material of different grade type, and jack catch 3 of baffle 1 cooperates with draw-in groove 4 of cathode pole shoe 2, then connect fixedly through rivet 5, can be with the light fixing of baffle 1 on cathode pole shoe 2 like this, and is simple to use, and the installation is changed conveniently.
Furthermore, the cathode pole shoe 2 is made of an alloy with high Curie temperature and high saturation magnetic induction intensity. The material of the cathode pole shoe 2 is preferably 4J29 iron nickel cobalt glass-sealed alloy with high Curie temperature and high saturation magnetic induction intensity. The 4J29 Fe-Ni-Co glass sealing alloy has relatively stable thermal expansion coefficient in a wider working temperature range, so that the cathode pole shoe has good structural stability with other parts while providing a stable and reliable working magnetic field, and the condition that the cathode pole shoe does not have structural or functional failure in the processes of high-temperature and low-temperature start and long-term working of the thruster is ensured.
Further, the material of the baffle 1 is carbon fiber composite material. The baffle 1 is preferably made of a carbon fiber composite material with strong plasma sputtering resistance, good heat conduction capability, small thermal expansion coefficient, light weight and high structural strength. The baffle made of the carbon fiber composite material is subjected to the technical processes of fiber weaving, resin impregnation, carbonization densification, surface repair and the like in sequence, so that the structural strength and the appearance quality of the baffle can effectively meet the engineering application requirements.
Further, baffle 1 and jack catch 3 are integrated into one piece structure. Baffle 1 and jack catch 3 integrated into one piece are circular baffle 1 in the middle of, encircle circular baffle 1, according to actual demand and the quantity of jack catch 3, design the angle between the jack catch 3 to confirm the concrete position of jack catch 3. In addition, in order to ensure the structural strength between the baffle plate 1 and the clamping jaw 3, the baffle plate 1 made of the carbon fiber composite material specially weaves carbon fiber yarns for the clamping jaw 3 in the preparation process, so that the phenomenon that the yarns are broken between the baffle plate 1 and the clamping jaw 3 and the phenomena of slag falling, peeling and the like caused by the sputtering corrosion of plasma are avoided, and the generation of excess materials is avoided.
Furthermore, the structure size of the clamping jaw 3 is the same as that of the clamping groove 4, and the jaw head of the clamping jaw 3 and the inside of the clamping groove 4 are provided with connecting holes 6 which correspond to each other. The shape and size of the clamping jaw 3 are the same as those of the clamping groove 4, the clamping jaw 3 is mainly used for being assembled and connected with the clamping groove 4, connecting holes 6 are formed in the jaw head of the clamping jaw 3 and the clamping groove 4, and the connecting holes 6 at the two positions are in one-to-one correspondence and are aligned with each other. The number of the connecting holes 6 inside the claw heads and the clamping grooves 4 of the clamping jaws 3 can be adjusted according to the requirement of connection strength, and in order to ensure the structural strength and riveting reliability of the cathode pole shoe assembly, the number of the connecting holes 6 of a single claw head and a single clamping groove 4 is preferably more than or equal to 2.
Further, the rivet 5 connects the claw head of the claw 3 with the clamping groove 4 through the connecting hole 6, so that the baffle plate 1 is fixedly assembled on the cathode pole shoe 2. During assembly and fixation, the angle of the claw 3 of the baffle plate 1 is adjusted firstly, the claw 3 is clamped into the clamping groove 4 of the cathode pole shoe 2 in a specific azimuth angle assembly mode, it is ensured that the connecting hole 6 in the claw head of the claw 3 is aligned with the connecting hole 6 in the clamping groove 4, then the rivet 5 is aligned with the connecting hole 6, the rivet sequentially penetrates through the claw head and the clamping groove 4 of the claw 3, the claw 3 is fixed in the clamping groove 4, finally, the titanium rivet riveting tool is used for completing forming and correcting of the end head of the rivet 5, and the baffle plate 1 is fixedly assembled above the cathode pole shoe 2.
Furthermore, the number of the clamping jaws 3 and the number of the clamping grooves 4 are all more than or equal to 3. The clamping jaws 3 of the baffle 1 correspond to the clamping grooves 4 of the cathode pole shoe 2 one by one, the number and the structural form of the clamping jaws 3 of the baffle 1 can be adjusted according to the actual performance requirement of the thruster and the structural strength of the baffle 1, but in order to ensure the stability, the number of the clamping jaws 3 and the number of the clamping grooves 4 are preferably more than or equal to 3.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (7)
1. A riveted divergent field ion thruster cathode pole shoe assembly comprising a cathode pole shoe and a baffle, wherein:
the cathode pole shoe and the baffle are different in material type;
a clamping groove is formed in the cathode pole shoe;
the baffle is provided with a clamping jaw;
and the clamping jaw on the baffle is connected with the clamping groove on the cathode pole shoe through a rivet, so that the baffle is fixed on the cathode pole shoe.
2. The riveted divergent field ion thruster cathode pole shoe assembly according to claim 1, wherein the material of the cathode pole shoe is an alloy with high Curie temperature and high saturation magnetic induction.
3. The riveted divergent field ion thruster cathode pole shoe assembly of claim 2, wherein the material of the baffle is a carbon fiber composite material.
4. The riveted divergent field ion thruster cathode pole shoe assembly of claim 3, wherein the baffle plate and the jaws are of an integrally formed structure.
5. The riveted divergent field ion thruster cathode pole shoe assembly according to claim 4, wherein the structural size of the clamping jaw is the same as that of the clamping groove, and connecting holes corresponding to each other are formed in the head of the clamping jaw and the inside of the clamping groove.
6. The riveted divergent field ion thruster cathode pole shoe assembly according to claim 5, wherein a rivet connects the claw heads of the jaws with the clamping grooves through the connecting holes, so that the baffle plate is fixedly assembled on the cathode pole shoe.
7. The riveted divergent field ion thruster cathode pole shoe assembly according to claim 5, wherein the number of the clamping jaws and the clamping grooves is more than or equal to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211314663.1A CN115653860B (en) | 2022-10-25 | 2022-10-25 | Riveting diverges field ion thruster cathode pole shoe assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211314663.1A CN115653860B (en) | 2022-10-25 | 2022-10-25 | Riveting diverges field ion thruster cathode pole shoe assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115653860A true CN115653860A (en) | 2023-01-31 |
| CN115653860B CN115653860B (en) | 2023-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211314663.1A Active CN115653860B (en) | 2022-10-25 | 2022-10-25 | Riveting diverges field ion thruster cathode pole shoe assembly |
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| CN (1) | CN115653860B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1450389A2 (en) * | 2003-02-19 | 2004-08-25 | Gesellschaft für Schwerionenforschung mbH | Multimode ion source with a hollow cathode sputter ion source-like structure with radial ion extracion. |
| JP2007120424A (en) * | 2005-10-28 | 2007-05-17 | Mitsubishi Electric Corp | Hall thruster and aerospace vehicle |
| CN104269336A (en) * | 2014-09-04 | 2015-01-07 | 兰州空间技术物理研究所 | Ion thruster discharge chamber magnetic pole structure and design method thereof |
| 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 |
| CN106401891A (en) * | 2016-12-07 | 2017-02-15 | 兰州空间技术物理研究所 | Annular magnetic steel installation structure of ion thruster |
| CN106545480A (en) * | 2016-12-07 | 2017-03-29 | 兰州空间技术物理研究所 | A kind of ion thruster gate members of riveting and preparation method thereof |
| WO2022142776A1 (en) * | 2020-12-28 | 2022-07-07 | 上海空间推进研究所 | Magnetic pole structure for hall thruster |
| CN217239607U (en) * | 2022-03-04 | 2022-08-19 | 宁德时代新能源科技股份有限公司 | End cover assembly, battery monomer, battery and power consumption device |
-
2022
- 2022-10-25 CN CN202211314663.1A patent/CN115653860B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1450389A2 (en) * | 2003-02-19 | 2004-08-25 | Gesellschaft für Schwerionenforschung mbH | Multimode ion source with a hollow cathode sputter ion source-like structure with radial ion extracion. |
| JP2007120424A (en) * | 2005-10-28 | 2007-05-17 | Mitsubishi Electric Corp | Hall thruster and aerospace vehicle |
| CN104269336A (en) * | 2014-09-04 | 2015-01-07 | 兰州空间技术物理研究所 | Ion thruster discharge chamber magnetic pole structure and design method thereof |
| 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 |
| CN106401891A (en) * | 2016-12-07 | 2017-02-15 | 兰州空间技术物理研究所 | Annular magnetic steel installation structure of ion thruster |
| CN106545480A (en) * | 2016-12-07 | 2017-03-29 | 兰州空间技术物理研究所 | A kind of ion thruster gate members of riveting and preparation method thereof |
| WO2022142776A1 (en) * | 2020-12-28 | 2022-07-07 | 上海空间推进研究所 | Magnetic pole structure for hall thruster |
| CN217239607U (en) * | 2022-03-04 | 2022-08-19 | 宁德时代新能源科技股份有限公司 | End cover assembly, battery monomer, battery and power consumption device |
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| Publication number | Publication date |
|---|---|
| CN115653860B (en) | 2023-09-22 |
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