CN115653860B - Riveting diverges field ion thruster cathode pole shoe assembly - Google Patents
Riveting diverges field ion thruster cathode pole shoe assembly Download PDFInfo
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- CN115653860B CN115653860B CN202211314663.1A CN202211314663A CN115653860B CN 115653860 B CN115653860 B CN 115653860B CN 202211314663 A CN202211314663 A CN 202211314663A CN 115653860 B CN115653860 B CN 115653860B
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Abstract
The application relates to the technical field of aerospace propulsion, in particular to a riveting divergent field ion thruster cathode pole shoe assembly, which comprises a cathode pole shoe and a baffle plate, wherein: the cathode pole shoe and the baffle are different in material type; the cathode pole shoe is provided with a clamping groove; the baffle is provided with a claw; the clamping jaw on the baffle plate is connected with the clamping groove on the cathode pole shoe through the rivet, and the baffle plate is fixed on the cathode pole shoe. On the basis of not changing the structural design scheme of the cathode pole shoe and the baffle plate and the material selection, the application improves the connection fastening mode by optimizing the technical scheme of the connection process, realizes the reliable connection of the heterogeneous refractory materials in the plasma environment under the coupling of strong electromagnetic fields, eliminates the technical risks of welding the baffle plate and falling off of the structure thereof caused by plasma sputtering, ensures the long service life and high reliability of the on-orbit application of the cathode pole shoe assembly, and effectively promotes the engineering application of the divergent field ion thruster.
Description
Technical Field
The application relates to the technical field of aerospace propulsion, in particular to a cathode pole shoe assembly of a riveted divergent field ion thruster.
Background
The cathode pole shoe and the baffle plate of the divergent field ion thruster are key parts of a thruster discharge chamber, the structural size and the material characteristic 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 characteristic of the baffle plate determine the transport channel of original electrons and the sputtering resistance in a plasma environment.
Based on different influencing factors, the design and material selection of the scheme for differentiating the cathode pole shoe and the baffle plate are needed in the design process of the discharge chamber, so that the optimization of the performance of the discharge chamber is realized. According to the basic characteristics of the divergent field ion thruster, in order to realize long service life, high performance and high reliability of the on-orbit application of the thruster, the baffle plate must be firmly and reliably fastened in the cathode pole shoe, and in the plasma environment under the coupling of strong electromagnetic field, 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 in the on-orbit engineering application of the divergent field ion thruster.
In the prior art, the conventional screw cannot be used for screwing under the restriction of factors such as operation space, self structural dimension, satellite design and construction specification, and the like, under the condition, the design is generally based on the scheme, and the actual materials of the cathode pole shoe and the baffle are finally determined by sacrificing part of performance and reliability level of the thruster. At present, alloy materials are adopted for the cathode pole shoe and the baffle, special materials which can be welded with the cathode pole shoe material and the baffle material are selected to be made into transition parts, and finally, the connection of the cathode pole shoe and the baffle is realized in a welding mode. However, long-term performance tests and life tests show that the method for realizing the connection of the cathode pole shoe and the baffle plate by utilizing the transition part in a welding mode has great defects, and the method is mainly characterized in that the thermal stress of a welding line is obvious, cracks are easy to generate, the welding qualification rate is low, the sputtering resistance is poor, and the reliability and the service life of a discharge chamber are seriously restricted.
Disclosure of Invention
The application provides a cathode pole shoe component of a riveted divergent field ion thruster, which realizes the reliable connection of heterogeneous refractory materials in a plasma environment under the coupling of a strong electromagnetic field 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 dispersion 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; the cathode pole shoe is provided with a clamping groove; the baffle is provided with a claw; the clamping jaw on the baffle plate is connected with the clamping groove on the cathode pole shoe through the rivet, and the baffle plate is fixed on the cathode pole shoe.
Further, the cathode pole shoe is made of alloy with high Curie temperature and high saturation induction intensity.
Further, the material of the baffle is carbon fiber composite material.
Further, the baffle and the clamping jaw are of an integrated structure.
Further, the structure size of the claw is the same as that of the clamping groove, and the claw head of the claw and the inside of the clamping groove are provided with connecting holes corresponding to each other.
Further, the rivet is used for connecting the claw heads of the claws with the clamping grooves through the connecting holes, and then the baffle plate is fixedly assembled on the cathode pole shoe.
Furthermore, the number of the clamping claws and the clamping grooves is more than or equal to 3.
The cathode pole shoe assembly of the riveting dispersion field ion thruster provided by the application 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 plate, the application improves the connection fastening mode by optimizing the technical scheme of the connection process, realizes the reliable connection of the heterogeneous refractory materials in the plasma environment under the coupling of strong electromagnetic fields, eliminates the technical risks of welding the baffle plate and falling off of the structure thereof caused by plasma sputtering, ensures the long service life and high reliability of the on-orbit application of the cathode pole shoe assembly, and effectively promotes the engineering application of the divergent field ion 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 the drawings:
FIG. 1 is an overall schematic of a riveted diffusion field ion thruster cathode pole shoe assembly provided in accordance with an embodiment of the present application;
FIG. 2 is a schematic illustration 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-clamping groove, 5-rivet and 6-connecting hole.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. 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 the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present application and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present application will be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1-2, the present application provides a riveted fringing field ion thruster cathode pole shoe assembly comprising a cathode pole shoe 2 and a baffle 1, wherein: the cathode pole shoe 2 and the baffle plate 1 are different in material type; the cathode pole shoe 2 is provided with a clamping groove 4; the baffle 1 is provided with a claw 3; the clamping jaw 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 titanium rivets is adopted for the cathode pole shoe assembly of the riveting dispersion field ion thruster, so that reliable connection of different refractory materials can be realized, and the problems that the welding seam connected by the existing welding mode is obvious in thermal stress, easy to crack, low in welding qualification rate, poor in sputtering resistance and severely limited in reliability and service life of a discharge chamber are solved. In the embodiment of the application, the cathode pole shoe 2 is arranged below, the baffle plate 1 is fixed above the cathode pole shoe 2, the cathode pole shoe 2 and the baffle plate 1 are made of different refractory materials, the claw 3 of the baffle plate 1 is matched with the clamping groove 4 of the cathode pole shoe 2, and then the baffle plate 1 is connected and fixed through the rivet 5, so that the baffle plate 1 can be easily fixed on the cathode pole shoe 2, the use is simple, and the installation and the replacement are convenient.
Further, the cathode pole piece 2 is made of an alloy with high Curie temperature and high saturation induction. The material of the cathode pole shoe 2 is preferably 4J29 iron-nickel-cobalt glass seal alloy with high Curie temperature and high saturation induction intensity. The 4J29 iron-nickel-cobalt glass seal 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 cathode pole shoe is ensured not to have structural or functional failure in the high-temperature and low-temperature starting and long-term working processes of the thruster.
Further, the material of the baffle plate 1 is carbon fiber composite material. The material of the baffle plate 1 is preferably 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 plate made of the carbon fiber composite material is subjected to the technological 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 plate can effectively meet engineering application requirements.
Further, the baffle 1 and the claw 3 are of an integrated structure. Baffle 1 and jack catch 3 integrated into one piece, the centre is circular baffle 1, encircles circular baffle 1, according to actual demand and the quantity of jack catch 3, designs 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 carries out weaving of carbon fiber wires on the clamping jaw 3 in the preparation process, ensures that no wire breakage exists between the baffle plate 1 and the clamping jaw 3, and avoids phenomena such as slag falling, peeling and the like caused by sputtering corrosion of plasma, thereby avoiding the generation of excessive materials.
Further, the structural size of the claw 3 is the same as that of the clamping groove 4, and connecting holes 6 corresponding to each other are formed in the claw heads of the claw 3 and the inside of the clamping groove 4. The shape and the size of the clamping claw 3 are the same as those of the clamping groove 4, the clamping claw is mainly used for being assembled and connected with the clamping groove 4, the claw heads of the clamping claw 3 and the inside of the clamping groove 4 are respectively provided with a connecting hole 6, 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 claw heads of the claw 3 and the connecting holes 6 in the clamping groove 4 can be adjusted according to the requirement of the connecting strength, and in order to ensure the structural strength and the riveting reliability of the cathode pole shoe assembly, the number of the connecting holes 6 of the single claw heads and the 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, and then the baffle plate 1 is fixedly assembled on the cathode pole piece 2. When the assembly is fixed, the angle of the claw 3 of the baffle plate 1 is firstly adjusted, the claw 3 is assembled and clamped into the clamping groove 4 of the cathode pole shoe 2 in a specific azimuth angle, the mutual alignment of the connecting hole 6 on the claw head of the claw 3 and the connecting hole 6 in the clamping groove 4 is ensured, then the rivet 5 is aligned with the connecting hole 6, the claw head of the claw 3 and the clamping groove 4 sequentially penetrate, the claw 3 is fixed in the clamping groove 4, finally the forming and correction of the end head of the rivet 5 are completed by utilizing a titanium rivet riveting tool, and the baffle plate 1 is fixedly assembled above the cathode pole shoe 2.
Furthermore, the number of the clamping claws 3 and the clamping grooves 4 is more than or equal to 3. The clamping claws 3 of the baffle plate 1 are in one-to-one correspondence with the clamping grooves 4 of the cathode pole shoes 2, the number and the structural form of the clamping claws 3 of the baffle plate 1 can be adjusted according to the actual performance requirement of the thruster and the structural strength of the baffle plate 1, but in order to ensure stability, the number of the clamping claws 3 and the clamping grooves 4 is preferably more than or equal to 3.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (2)
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;
the cathode pole shoe is provided with a clamping groove;
the baffle is provided with a claw;
the clamping jaw on the baffle plate is connected with the clamping groove on the cathode pole shoe through a rivet, and the baffle plate is fixed on the cathode pole shoe;
the cathode pole shoe is made of alloy with high Curie temperature and high saturation induction intensity;
the baffle is made of carbon fiber composite material;
the baffle and the clamping jaw are of an integrated structure;
the structure size of the clamping claw is the same as that of the clamping groove, and connecting holes corresponding to each other are formed in the claw head of the clamping claw and the inside of the clamping groove;
the rivet is used for connecting the claw heads of the claws with the clamping grooves through the connecting holes, and then the baffle plate is fixedly assembled on the cathode pole shoe.
2. The riveted, dispersed field ion thruster cathode pole shoe assembly of claim 1, wherein the number of the jaws and the number of the clamping grooves are equal to or greater than 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 CN115653860A (en) | 2023-01-31 |
| CN115653860B true CN115653860B (en) | 2023-09-22 |
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| 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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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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| CN115653860A (en) | 2023-01-31 |
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