CN219827049U - Grid thermal deformation prevention ion thruster - Google Patents
Grid thermal deformation prevention ion thruster Download PDFInfo
- Publication number
- CN219827049U CN219827049U CN202321251851.4U CN202321251851U CN219827049U CN 219827049 U CN219827049 U CN 219827049U CN 202321251851 U CN202321251851 U CN 202321251851U CN 219827049 U CN219827049 U CN 219827049U
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- Prior art keywords
- grid
- mounting sleeve
- accelerating
- screen
- ion thruster
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- 230000002265 prevention Effects 0.000 title claims abstract description 13
- 238000009434 installation Methods 0.000 claims abstract description 15
- 230000001133 acceleration Effects 0.000 claims abstract description 5
- 230000008646 thermal stress Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000008642 heat stress Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
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Abstract
The utility model discloses a grid thermal deformation prevention ion thruster, which comprises an ionization chamber, a grid bracket, a screen grid system, a second mounting sleeve, an acceleration grid system, a first mounting sleeve and a flange plate which are connected together in sequence through bolts; the screen grid system comprises a screen grid and a second snap ring, and a plurality of radially arranged second sliding grooves are uniformly arranged on the second snap ring; the screen grid is provided with a plurality of second buckling columns, and the second buckling columns are positioned at the near center end of the second sliding groove during installation; the accelerating grid system comprises an accelerating grid and a first snap ring arranged on the periphery of the accelerating grid, and a plurality of first sliding grooves which are radially arranged are uniformly formed in the first snap ring; be provided with a plurality of first buckle posts on the bars of accelerating, and first buckle post is located the nearly heart end of first spout when installing. The utility model has the advantages of simple structure and high stability, and can effectively prevent the grid from thermal deformation and improve the performance of the thruster.
Description
Technical Field
The utility model relates to the technical field of aerospace electric propulsion, in particular to a grid thermal deformation prevention ion thruster.
Background
The grid system deforms under the action of thermal stress, the grid in a non-working state is called a cold grid, and the grid deformed in a working state is called a hot grid. The difference of flow field parameters inside and outside the discharge cavity can cause thermal stress to be born by the screen grid and the accelerating grid, the generated deformation can also have great difference, and the distance between the screen grid and the accelerating grid is changed, so that the electric field position of the grid is changed, and the working state, the performance parameters and the service life of the ion thruster are further influenced.
The current gate structure design adopted by the gate assembly shows that: although the requirements of various performance indexes of the thruster can be met, the problems of uncontrollable change of the thermal state spacing of the grid, grid deformation, grid hole corrosion deformation and the like exist before and after working. The problems are light, so that the beam is led out, the performance of the thruster is reduced, and the grid is ignited and short-circuited to directly cause the failure of the thruster. Therefore, the thermal deformation of the control grid and the stability of the spacing between the control grid are key problems for ensuring the long-acting operation of the ion thruster.
Therefore, there is a need for a grid heat distortion prevention ion thruster.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a grid thermal deformation prevention ion thruster so as to solve the problem that grid thermal deformation can be caused by the difference of flow field parameters inside and outside a discharge cavity.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows.
The ion thruster comprises an ionization chamber, a grid bracket, a screen grid system, a second installation sleeve, an acceleration grid system, a first installation sleeve and a flange plate which are sequentially connected together through bolts; the screen grid system comprises a screen grid and a second clamping ring arranged on the periphery of the screen grid, and a plurality of radially arranged second sliding grooves are uniformly arranged on the second clamping ring; the screen grid is provided with a plurality of second buckling columns which are used for being assembled in the second sliding groove, and the second buckling columns are positioned at the near center end of the second sliding groove during installation; the accelerating grid system comprises an accelerating grid and a first clamping ring arranged on the periphery of the accelerating grid, and a plurality of first sliding grooves which are radially arranged are uniformly formed in the first clamping ring; the accelerating grid is provided with a plurality of first buckling columns which are used for being assembled in the first sliding groove, and the first buckling columns are located at the near center end of the first sliding groove during installation.
Further optimizing technical scheme, first buckle post, second buckle post all are provided with eight.
According to the further optimized technical scheme, the length of the first sliding groove is smaller than that of the second sliding groove.
According to the further optimized technical scheme, the thickness of the first mounting sleeve is larger than that of the second mounting sleeve.
Further optimizing technical scheme, the grid support is including being ring-shaped ring body and perpendicular setting in the fender wall of ring periphery, and the high sum that equals second snap ring, second installation cover, first snap ring, first installation cover and ring flange of fender wall.
Further optimizing technical scheme, eight evenly set up and corresponding bolt holes that set up have all been seted up on ionization chamber, grid support, second snap ring, second installation cover, first snap ring, first installation cover and the ring flange to the bolt passes and fixes.
By adopting the technical scheme, the utility model has the following technical progress.
According to the grid thermal deformation prevention ion thruster provided by the utility model, the buckling columns and the sliding grooves are arranged, and the stress is released in the reserved space in the sliding grooves, so that the axial thermal deformation generated during the thermal deformation of the grid is effectively reduced, the axial thermal deformation of a grid assembly can be reduced, the stable grid spacing is maintained, and the performance of the thruster is further stabilized. The utility model has the advantages of simple structure and high stability, and can effectively prevent the grid from thermal deformation and improve the performance of the thruster.
Drawings
FIG. 1 is an exploded view of the present utility model;
FIG. 2 is a perspective view of the present utility model;
FIG. 3 is a schematic view of the structure of the middle screen and the second snap ring of the present utility model;
FIG. 4 is a schematic view of a second chute according to the present utility model;
fig. 5 is a schematic structural view of the middle acceleration gate and the first snap ring of the present utility model.
Wherein: 1. flange plate, 2, first installation cover, 3, acceleration bars, 31, first buckle post, 4, first snap ring, 41, first spout, 5, second installation cover, 6, screen bars, 61, second buckle post, 7, second snap ring, 71, second spout, 8, grid support, 9, ionization chamber.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the specific embodiments.
The ion thruster for preventing the grid from thermal deformation comprises a flange plate 1, a first mounting sleeve 2, an accelerating grid 3, a first clamping ring 4, a second mounting sleeve 5, a screen 6, a second clamping ring 7, a grid support 8 and an ionization chamber 9, wherein the first mounting sleeve is provided with a first clamping ring and a second clamping ring. The accelerating grid 3 is provided with a first buckling column 31; the first snap ring 4 is provided with a first chute 41; a second buckling column 61 is arranged on the screen 6; the second snap ring 7 is provided with a second slide groove 71.
The ionization chamber 9, the grid support 8, the screen grid system, the second mounting sleeve 5, the accelerating grid 3 system, the first mounting sleeve 2 and the flange plate 1 are connected together in sequence through bolts. The grid support 8 comprises a ring body in a ring shape and a blocking wall vertically arranged on the periphery of the ring, wherein the height of the blocking wall is equal to the sum of the thicknesses of the second snap ring, the second mounting sleeve 5, the first snap ring, the first mounting sleeve 2 and the flange plate 1. The second snap ring, the second mounting sleeve 5, the first snap ring, the first mounting sleeve 2 and the flange 1 are located in a groove formed between the retaining wall and the ring body. Eight bolt holes which are uniformly arranged and have the same positions are formed in the ionization chamber 9, the grid support 8, the second snap ring, the second mounting sleeve 5, the first snap ring, the first mounting sleeve 2 and the flange plate 1, so that bolts can pass through and are fixed in sequence.
The screen system comprises a screen 6 and a second snap ring 7 arranged on the periphery of the screen 6, wherein eight second sliding grooves 71 which are arranged radially are uniformly arranged on the second snap ring 7. Eight second snap posts 61 are provided on the screen 6 for fitting into the second slide slots 71. The second sliding grooves 71 are in one-to-one correspondence with the second buckling columns 61, and the second buckling columns 61 are located at the proximal ends of the second sliding grooves 71 during installation.
The accelerating grid 3 system comprises an accelerating grid 3 and a first snap ring 4 arranged on the periphery of the accelerating grid 3, wherein eight first sliding grooves 41 which are arranged in the radial direction are uniformly arranged on the first snap ring 4. The accelerating grid 3 is provided with first buckling columns 31 which are used for being assembled in the first sliding grooves 41, the first buckling columns 31 are in one-to-one correspondence with the first sliding grooves 41, and the first buckling columns 31 are located at the proximal ends of the first sliding grooves 41 during installation.
The thermal stress and deformation of the screen grid 6 and the accelerating grid 3 are different due to the difference of flow field parameters inside and outside the discharge cavity, so that the length of the first chute 41 is smaller than that of the second chute 71; the thickness of the screen grating is smaller than that of the accelerating grating, so that the thickness of the first mounting sleeve 2 is larger than that of the second mounting sleeve 5; the spacing between the screen 6 and the accelerator 3 remains unchanged, thereby improving the stability and lifetime of the gate system.
When the utility model is actually used, the grid system body can deform under the action of heat stress; when the accelerating grid 3 is stretched during deformation, the first buckling columns 31 can be radially stretched in the reserved space of the first sliding groove 41, and further the first buckling columns 31 are prevented from being deformed axially. When the screen 6 is radially stretched, the second fastening post 61 can be stretched in the reserved space of the second chute 71, so that the second fastening post 61 is prevented from being deformed axially.
Claims (6)
1. A grid thermal deformation prevention ion thruster is characterized in that: the device comprises an ionization chamber (9), a grid support (8), a screen grid system, a second mounting sleeve (5), an acceleration grid system, a first mounting sleeve (2) and a flange plate (1) which are connected together in sequence through bolts; the screen grid system comprises a screen grid (6) and a second clamping ring (7) arranged on the periphery of the screen grid (6), and a plurality of second sliding grooves (71) which are radially arranged are uniformly formed in the second clamping ring (7); the screen grid (6) is provided with a plurality of second buckling columns (61) which are used for being assembled in the second sliding groove (71), and the second buckling columns (61) are positioned at the near-center end of the second sliding groove (71) during installation; the accelerating grid system comprises an accelerating grid (3) and a first clamping ring (4) arranged on the periphery of the accelerating grid (3), wherein a plurality of first sliding grooves (41) which are radially arranged are uniformly formed in the first clamping ring (4); the accelerating grid (3) is provided with a plurality of first buckling columns (31) which are used for being assembled in the first sliding groove (41), and the first buckling columns (31) are positioned at the near-center end of the first sliding groove (41) during installation.
2. The grid heat distortion prevention ion thruster of claim 1, wherein: eight first buckling columns (31) and eight second buckling columns (61) are arranged.
3. The grid heat distortion prevention ion thruster of claim 2, wherein: the length of the first sliding groove (41) is smaller than that of the second sliding groove (71).
4. A gate thermal deformation prevention ion thruster according to claim 3, wherein: the thickness of the first mounting sleeve (2) is larger than that of the second mounting sleeve (5).
5. The grid heat distortion prevention ion thruster of claim 4, wherein: the grid support (8) comprises a ring body which is in a ring shape and a retaining wall which is vertically arranged on the periphery of the ring, and the height of the retaining wall is equal to the sum of the thicknesses of the second snap ring, the second mounting sleeve (5), the first snap ring, the first mounting sleeve (2) and the flange plate (1).
6. The grid heat distortion prevention ion thruster of claim 5, wherein: eight bolt holes which are uniformly arranged and correspondingly arranged are formed in the ionization chamber (9), the grid support (8), the second clamping ring, the second mounting sleeve (5), the first clamping ring, the first mounting sleeve (2) and the flange plate (1), so that bolts can pass through and are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321251851.4U CN219827049U (en) | 2023-05-23 | 2023-05-23 | Grid thermal deformation prevention ion thruster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321251851.4U CN219827049U (en) | 2023-05-23 | 2023-05-23 | Grid thermal deformation prevention ion thruster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219827049U true CN219827049U (en) | 2023-10-13 |
Family
ID=88280681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321251851.4U Active CN219827049U (en) | 2023-05-23 | 2023-05-23 | Grid thermal deformation prevention ion thruster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219827049U (en) |
-
2023
- 2023-05-23 CN CN202321251851.4U patent/CN219827049U/en active Active
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