A connection structure for satellite through-cabin waveguide

Abstract

The invention discloses a connection structure of a satellite through-cabin waveguide, and relates to the field of satellite payload design. The connection structure comprises a satellite cabin plate, which is provided with a through-cabin notch; a through-cabin flange, which is covered at the through-cabin notch position and fixedly connected to the satellite cabin plate, and is provided with a connection hole; an in-cabin waveguide component, which is connected to the through-cabin flange; and an out-cabin waveguide component, which is connected to the in-cabin waveguide component through the connection hole. The connection structure can compensate the rigidity of the cabin plate, improve the overall rigidity of the cabin plate, reduce the rigidity loss of the cabin plate caused by the through-cabin notch, block the installation error of some components in the cabin of the through-cabin waveguide, and effectively ensure the accuracy of the through-cabin waveguide docking with out-cabin equipment such as antennas after leaving the cabin.

Description

Technical Field

[0001] The invention provides a connection structure of a satellite through-cabin waveguide, belonging to the field of satellite payload design. Background Art

[0002] With the rapid development of high-throughput communication satellites, the application of single or a few gateway stations to manage multiple user beams is becoming more and more popular. Therefore, in the transmission link of the payload system, traveling wave tube amplifiers are used extensively. After the signal is amplified, it is uploaded to the transmitting antenna through isolators, switching switches, output multiplexers / filters, etc., and radiated to the ground user area by the antenna. Due to the system characteristics of this type of transponder, when laying out the satellite payload cabin, a large number of waveguides are connected between the output filter / multiplexer and the transmitting antenna, and all of them need to be connected from the inside of the payload cabin, through the satellite cabin board and the antenna feed port.

[0003] Taking the Asia-Pacific 6D satellite as an example, the satellite transponder consists of 8 gateway stations (including backups), managing 90 user beams, and a total of 54 traveling wave tube amplifiers are configured for the forward and return transmission links. The traveling wave tube amplifiers, switching switches, output filters / multiplexers and other equipment are all arranged in the payload cabin. The number of waveguides connecting the output filter / multiplexer and the transmitting antenna feed reaches 106, all of which need to pass through the satellite floor from inside the payload cabin to connect to the antenna feed.

[0004] In traditional designs, when a waveguide passes through a hatch, only a rectangular or circular notch is opened at the corresponding position of the cabin plate to meet the space for the waveguide to pass through the cabin. Except for meeting the waveguide installation requirements, no other processing is performed. This is based on the fact that there is ample space in traditional satellite layouts and the number of cabin-penetrating waveguides is extremely small (generally not more than 10). A fixed bracket designed nearby before and after the waveguide passes through the cabin can meet the installation positioning and support requirements for the cabin part of the cabin-penetrating waveguide, without the need for special processing. However, for high-throughput multi-beam satellites, a large number of waveguides pass through the cabin. Even if the waveguides are grouped and designed centrally, one or more large-sized notches need to be set on the cabin board (the number and position of the notches depend on the layout design). The setting of large-sized notches will reduce the rigidity of the cabin board, greatly reducing the mechanical resistance of the entire satellite. At the same time, the layout space of high-throughput satellites is generally very tight, and it is almost impossible to support the cabin-penetrating waveguide by designing waveguide fixing brackets near before and after the cabin penetration. In addition, due to the segmented installation of the cabin-penetrating waveguide (the cabin part is installed first, and the cabin-outside part is installed after the cabin is closed), the cabin-inside waveguide has no effective positioning when installed at the cabin exit position, and is in a suspended state at one end. After the cabin is closed, the cabin body forms a closed space, the cabin waveguide cannot be adjusted, and the installation error cannot be eliminated. After the cabin is closed, the installation errors of the inner and outer waveguides are accumulated to the antenna docking interface, and there is a great risk of docking with the antenna. Therefore, for multi-waveguide cabin penetrations similar to high-throughput satellites, special design is required.

[0005] From the existing public data, there is no application description identical with the present invention in China. Summary of the invention

[0006] The technical problem solved by the present invention is: to overcome the shortcomings of the prior art and provide a connection structure for satellite cabin-penetrating waveguides, so as to solve the problems of cabin-penetrating waveguide support, cabin-part installation and positioning, and cabin-penetrating notches to reduce cabin plate stiffness that cannot be solved by traditional design schemes in the design of waveguide penetration in a satellite payload cabin, especially a plurality of waveguide penetrations.

[0007] Through the design of the cabin penetration flange and the special waveguide flange, the waveguide penetration requirements can be met while solving the problem of large-size cabin penetration notches reducing cabin plate rigidity and waveguide support and installation positioning. It has been verified in flight and on-orbit on multiple communication satellites such as the Asia-Pacific 6D, and has a good structure. It has important technical value and broad application prospects in subsequent high-throughput satellites.

[0008] The technical solution of the present invention is:

[0009] A connection structure of a satellite through-cabin waveguide, comprising:

[0010] The satellite cabin panel is provided with a through-cabin notch and a connecting hole; the through-cabin flange is covered at the through-cabin notch and fixedly connected to the satellite cabin panel, and the through-cabin flange is provided with a connecting hole and a notch; the in-cabin waveguide component is connected to the through-cabin flange through a specially designed flange; the out-cabin waveguide component is connected to the in-cabin waveguide component through the connecting hole.

[0011] The in-cabin waveguide assembly comprises a special flange and an in-cabin section waveguide tube. The special flange and the in-cabin section waveguide tube are welded to form the in-cabin waveguide assembly, and the in-cabin waveguide assembly is connected to the through-cabin flange via the special flange.

[0012] The outboard waveguide assembly includes a standard flange and an outboard waveguide tube section. The standard flange and the outboard waveguide tube section are welded to form an outboard waveguide assembly, and the standard flange is connected to a special flange to complete the docking of the outboard and inboard waveguide assemblies.

[0013] The through-tank flange is designed with a cabin plate connection hole, a special flange connection hole, and a notch;

[0014] The satellite cabin plate is designed with flange connection holes;

[0015] The cabin plate connecting hole cooperates with the flange connecting hole to fix the through-cabin flange to the through-cabin notch of the satellite cabin plate. The special flange connecting hole is used to connect the in-cabin waveguide component, and the out-cabin waveguide component passes through the notch to connect with the special flange connecting hole; the connected in-cabin waveguide component and out-cabin waveguide component constitute a through-cabin waveguide.

[0016] The single-side size of the penetration notch is 5-10 mm larger than the outer envelope size of all the penetration waveguides, and the center position of the penetration notch is consistent with the center of the waveguide group penetrating the cabin at this location;

[0017] The flange connection holes are threaded holes; the flange connection holes are located away from other equipment on the cabin and shall not interfere with other equipment on the satellite; the spacing between adjacent flange connection holes is not greater than 200 mm, and the relative position accuracy is better than ±0.1 mm.

[0018] The special flange of the in-cabin waveguide includes a flange body and connecting ears; the size of the flange body is consistent with that of the standard flange; the number of connecting ears on a single special flange is not less than 2, and the connecting ears are connected to the opposite sides of the flange body, and the size is as small as possible under the premise of meeting the installation space and ensuring reliable connection;

[0019] Each connecting ear is provided with a first mounting hole for connecting the through-cabin flange, the first mounting hole is a plain hole, and the first mounting hole is used to cooperate with the special flange connection hole;

[0020] A second mounting hole for connecting to the standard flange of the waveguide outside the cabin is provided on the flange body. The second mounting hole is a threaded hole. The second mounting hole is used to connect to the standard flange, and the relative position accuracy is better than ±0.1mm.

[0021] The standard flange is provided with a third mounting hole, the third mounting hole is a light hole, the relative position accuracy of the third mounting hole is not greater than ±0.1, and the third mounting hole cooperates with the second mounting hole.

[0022] The through-cabin flange is a flat plate structure, the single-side size of the through-cabin flange is 20-30 mm larger than the outer envelope size of all through-cabin waveguides, the thickness is not less than 3 mm, and the flatness is better than 0.1 mm / 100 mm×100 mm; the through-cabin flange can be designed with optional reinforcement ribs;

[0023] The relative position of the cabin plate connection hole on the through-cabin flange coincides with the flange connection hole on the satellite cabin plate, and is required to be a light hole that matches the connection hole, with a relative position accuracy better than ±0.1mm;

[0024] The special flange connection hole designed on the penetration flange has a relative position that coincides with the first mounting hole of the special flange after being installed on the satellite. The special flange connection hole matches the first mounting hole on the special flange, and the position accuracy is better than ±0.1mm;

[0025] The size of the notch on the through-cabin flange is larger than the size of the standard flange on the outboard waveguide assembly (one side is required to be larger than 1.5 mm), and at the same time, it is required to be smaller than the size of the special flange in the connection direction with the special flange (at least smaller than 3+R mm, R is the aperture of the first mounting hole).

[0026] The in-cabin waveguide assembly adopts a layered design, and the layering rules are as follows:

[0027] a) The number of floors shall not exceed 7;

[0028] b) The satellite is a hexahedral structure, including opposite south and north plates, opposite ground plates and back plates, and opposite east and west plates. Satellite cabin plate 1 is the ground plate, and the highest waveguide is no more than 300 mm away from the south plate and / or north plate;

[0029] c) For waveguides of different specifications, the interlayer spacing between the upper and lower waveguides follows the following rules:

[0030] The minimum spacing between the waveguide components inside the upper and lower cabins and between the waveguide components outside the upper and lower cabins is greater than 5mm;

[0031] d) For the same layer of waveguide, the distance between the outer walls of the waveguide tubes must be ≥15mm.

[0032] The installation of the in-cabin waveguide assembly and the out-cabin waveguide assembly shall comply with the following principles:

[0033] Fix the through-cabin flange on the satellite cabin plate;

[0034] First install the waveguide assembly inside the cabin and fix it on the through-cabin flange. After closing the cabin, install the waveguide assembly outside the cabin.

[0035] When installing the waveguide components inside the cabin and outside the cabin, the installation order should be from bottom to top, that is, the lower layer of waveguide should be installed first, and then installed layer by layer.

[0036] In summary, this application at least includes the following beneficial technical effects:

[0037] 1. The through-cabin flange is generally an integrally machined structural part (generally, for example, aluminum alloy), which is fixedly connected to the satellite cabin panel (such as screw connection) to form an integral structure with the satellite cabin panel, thereby compensating the stiffness of the satellite cabin panel, improving the overall stiffness of the satellite cabin panel, and reducing the stiffness loss of the satellite cabin panel caused by the through-cabin notch.

[0038] 2. A special waveguide flange is designed, which also has two mechanical interfaces, which are respectively connected to the through-cabin flange and the extracabin waveguide assembly, so that the through-cabin waveguide is fixed to the satellite cabin plate through the through-cabin flange to form a stable structure. There is no need to design a special waveguide flange connection bracket to support the through-cabin waveguide, which saves the weight caused by the design of the bracket and saves space.

[0039] 3. The existence of the through-cabin flange is equivalent to providing an installation reference for the installation of the waveguide assembly in the cabin before the cabin is closed. The waveguide assembly in the cabin is no longer in a suspended state at one end before the cabin is closed. By connecting and installing with the through-cabin flange, the installation error of the waveguide assembly in the cabin can be blocked from extending outside the cabin, effectively ensuring the accuracy of the connection between the waveguide assembly and the antenna and other external equipment after leaving the cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The schematic diagram of the structure of the in-cabin waveguide assembly is formed by welding the in-cabin waveguide and the special waveguide flange;

[0041] Figure 2 The schematic diagram of the structure of the outboard waveguide assembly is formed by welding the outboard waveguide and the outboard standard flange;

[0042] Figure 3 This is a schematic diagram of the through-cabin flange being assembled on the satellite cabin panel (from the perspective inside the cabin);

[0043] Figure 4 This is a schematic diagram of the through-cabin flange being assembled on the satellite cabin panel (from outside the cabin);

[0044] Figure 5 Schematic diagram of the through-cabin waveguide cabin components installed on the through-cabin flange (single waveguide cabin perspective);

[0045] Figure 6 Schematic diagram of the installation of the through-cabin waveguide cabin components on the through-cabin flange (view from inside the cabin with multiple waveguides);

[0046] Figure 7 Schematic diagram of the installation of the through-cabin waveguide cabin components on the through-cabin flange (multiple waveguides from the outside of the cabin);

[0047] Figure 8 This is a schematic diagram of the installation of the through-cabin waveguide extravehicular components (from the perspective of a single waveguide outside the cabin);

[0048] Fig. 9 This is a schematic diagram of the installation of the through-cabin waveguide extravehicular components (multiple waveguides from the perspective of the cabin outside);

[0049] Fig.10 This is a schematic diagram of the through-tank flange design;

[0050] Fig.11 Several example structures of special flanges are shown below.

[0051] Explanation of the reference numerals: 1. Satellite cabin panel; 11. Cabin notch; 12. Flange connection hole; 2. Cabin flange; 21. Cabin panel connection hole; 22. Special flange connection hole; 23. Notch; 3. Cabin waveguide assembly; 31. Special flange; 311. Flange body; 312. Second mounting hole; 313. Connecting ear; 314. First mounting hole; 32. Cabin section waveguide tube; 4. Cabin extra-cabin waveguide assembly; 41. Standard flange; 411. Third mounting hole; 42. Cabin extra-cabin section waveguide tube. DETAILED DESCRIPTION

[0052] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0053] Taking the high-throughput large-scale communication model APSTAR-6D satellite as an example, its waveguide through-cabin design is mainly implemented in the following ways:

[0054] The present application embodiment discloses a connection structure of a satellite through-cabin waveguide, such as Figure 1 , Figure 2 and Figure 3 As shown, the connection structure includes a satellite cabin panel 1 with a through-cabin notch 11, a through-cabin flange 2 connected to the satellite cabin panel 1, an in-cabin waveguide component 3 connected to the through-cabin flange 2, and an out-cabin waveguide component 4 connected to the in-cabin waveguide component 3. The through-cabin flange 2 is covered at the position of the through-cabin notch 11 of the satellite cabin panel 1. The through-cabin flange 2 is provided with a cabin panel connecting hole 21, and the out-cabin waveguide component 4 is connected to the in-cabin waveguide component 3 through the cabin panel connecting hole 21.

[0055] like Figure 1 , Figure 2 As shown, the in-cabin waveguide assembly 3 includes a special flange 31 and an in-cabin waveguide section 32, and the two ends of the special flange 31 are respectively connected to the through-cabin flange 2 and the in-cabin waveguide section 32. The out-cabin waveguide assembly 4 includes a standard flange 41 and an out-cabin waveguide section 42, and the two ends of the standard flange 41 are respectively connected to the special flange 31 and the out-cabin waveguide section 42. The in-cabin waveguide section 32 and the in-cabin waveguide section 32 are connected to form the through-cabin flange 2.

[0056] The size of the cabin-penetrating gap 11 depends on the outer envelope size of all cabin-penetrating waveguides passing through the cabin from there. All cabin-penetrating waveguides are all cabin-penetrating waveguides passing through one cabin-penetrating gap. It is required that the single-side size of the cabin-penetrating gap 11 is 5 to 10 mm larger than the outer envelope size of all cabin-penetrating waveguides, and the center position of the cabin-penetrating gap 11 is consistent with the center of the cabin-penetrating waveguide group here.

[0057] Design reference for penetration flange 2 Fig.10 , design the installation interface connected with the satellite cabin panel 1, the cabin waveguide component 3 and the cabin waveguide component 4. At the same time, based on the mechanical analysis of the whole satellite, determine the thickness of the cabin flange 2, and optimize the structural design of the cabin flange 2 while considering the weight cost.

[0058] The through-cabin flange 2 is generally a flat plate structure. The single-side size of the through-cabin flange 2 is 20~30mm larger than the outer envelope size of all through-cabin waveguides, the thickness is not less than 3mm, and the flatness is better than 0.1mm / 100mm×100mm. According to the results of the mechanical analysis of the whole satellite, the through-cabin flange 2 can be appropriately designed with reinforcing ribs. When designing the through-cabin flange 2, two mechanical interfaces must be designed, namely, the cabin plate connection hole 21 and the special flange connection hole 22. The outer cabin plate mounting hole 21 is used to fix the through-cabin flange 2 on the satellite cabin plate 1. The satellite cabin plate 1 is provided with a flange connection hole 12, and the cabin plate mounting hole 21 cooperates with the flange connection hole 12; the inner special flange connection hole 22 needs to provide an installation interface for the special flange 31 of the in-cabin waveguide component 3. The through-cabin flange 2 is also provided with a notch 23. The out-cabin waveguide component 4 passes through the notch 23 to connect with the in-cabin waveguide component 3. The notch 23 is reserved for the installation space of the out-cabin standard flange of the out-cabin waveguide component 4.

[0059] The specifications of flange connection hole 12 are consistent with the industry standard for onboard equipment installation holes. This flange connection hole 12 is required to be a threaded hole. The position is required to avoid other equipment on the cabin and must not interfere with other equipment on the satellite. At the same time, the spacing between adjacent flange connection holes 12 is not greater than 200mm, and the relative position accuracy is better than ±0.1mm. The relative position of cabin connection hole 21 coincides with the connection hole 12 on the satellite cabin 1. It is required to be a light hole, and the specifications match the cabin connection hole 21. The relative position accuracy is better than ±0.1mm. The relative position of the special flange connection hole 22 after installation on the satellite coincides with the first installation hole 314. The specifications of the connection hole 22 match the first installation hole 314, and the position accuracy is better than ±0.1mm. The size of the notch 23 is required to be larger than the size of the standard flange 41 (one side is required to be larger than 1.5mm), and at the same time, it is required to be smaller than the size of the special flange 31 in the connection direction with the special flange 31 (at least smaller than 3+Rmm, R is the aperture of the first mounting hole 314), that is: it is necessary to ensure the docking installation space between the extra-cabin waveguide component 4 and the intra-cabin waveguide component 3, and to ensure that the intra-cabin waveguide component 3 can be reliably fixed on the through-cabin flange 2.

[0060] Fig.10 The figure shows a through-cabin flange 2 used at a certain place of the satellite. Through 20 φ4.5mm cabin plate mounting holes 21 evenly distributed around the through-cabin flange 2, the satellite cabin plate 1 is provided with flange connecting holes 12. The connecting screws connect the satellite cabin plate 1 with the satellite cabin plate 1 through the cabin plate mounting holes 21 and the flange connecting holes 12 to complete the installation of the through-cabin flange 2; the waveguide through-cabin is completed through 15 small windows in the middle of the flange, and is connected to the through-cabin waveguide flange (specially designed) through 4 M3 mounting holes on both sides of the small windows. The through-cabin flange 2 can support 5x5, a total of 25 through-cabin waveguides.

[0061] Special flange 31 design, reference Fig.11The types are not limited to those listed in the figure, but in order to ensure that the supporting effect of the waveguide meets the mechanical requirements, the connection point between the special waveguide flange and the through-cabin flange 2 must be designed based on the mechanical analysis results to meet the waveguide support conditions.

[0062] Fig.11 The figure shows several special flanges designed for cabin penetration and commonly used in high-throughput satellites. The connection with the cabin penetration flange 2 is completed through the φ3.2mm mounting holes on the outside, the in-cabin part of the cabin penetration waveguide is positioned and installed, and the in-cabin part of the cabin penetration waveguide is connected to the waveguide flange (ordinary flange, no special design required) outside the cabin through the M3 mounting holes on the inside (there are 6 holes in each place in the figure) to complete the docking of the waveguides inside and outside the cabin.

[0063] When designing the special waveguide flange outside the cabin, two mechanical interfaces must also be designed on it, which are connected to the through-cabin flange 2 and the waveguide assembly outside the cabin 4 respectively. The special flange 31 includes a flange body 311 and a connecting ear 313. The size of the flange body 311 is consistent with the standard flange 41, which is generally derived from industry standards. The number of connecting ears 313 on a single flange body 311 is not less than 2, and the connecting ears 313 are connected to the opposite sides of the flange body 311. The number and position of the above connecting ears ensure the reliability of the connection. The size of the connecting ear 313 is as small as possible while meeting the installation space of the connecting screws and ensuring reliable connection. The connecting ear 313 is provided with a first mounting hole 314 for connecting the through-cabin flange 2. The first mounting hole 314 is a light hole. The aperture size depends on the specification of the connecting screws selected for the through-cabin waveguide docking flange, and the relative position accuracy is generally better than ±0.1mm. The flange body 311 is provided with a second mounting hole 312 for connecting the standard flange 41. The second mounting hole 312 is a threaded hole. The first mounting hole 314 is located on the side of the second mounting hole 312 away from the center of the flange body 311. The standard flange 41 is provided with a third mounting hole 411. The third mounting hole 411 is a light hole. The number of the second mounting holes 312 is consistent with the number of the third mounting holes 411 and they are directly opposite. The thread specification matches the third mounting hole 411. The relative position accuracy of the second mounting hole 312 and the third mounting hole 411 is not greater than ±0.1mm. Among them, the first mounting hole 314 on the outside is used to fix the in-cabin waveguide assembly 3 on the through-cabin flange 2; the second mounting hole 312 on the inside is used to connect the standard flange 41. The size of the standard flange and the specification of the third mounting hole 411 are consistent with the industry standard. The special flange connection holes 22 are arranged in multiple rows, each row includes multiple special flange connection holes 22, and the connection ears 313 are located between the special flange connection holes 22 in different rows. Each row of special flange connection holes 22 is arranged in multiple layers. The spacing between two adjacent layers of special flange connection holes 22 ensures that the installation of different layers of the outer section waveguide 42 and the inner section waveguide 32 does not interfere with each other, and at the same time makes the through-cabin gap 11 smaller. By setting the structure of the special flange 31 and the corresponding distribution setting of the special flange connection holes 22, the through-cabin gap 11 can be made smaller.

[0064] The in-cabin waveguide component 3 adopts a layered design, and the layering rules are as follows:

[0065] a) The number of floors shall not exceed 7;

[0066] b) The distance between the highest waveguide and the cabin board is not more than 300mm;

[0067] c) For waveguides of different specifications, the interlayer spacing between the upper and lower waveguides follows the following rules:

[0068] BJ120 / BZ120 / BJ140 requires ≥35mm

[0069] BJ180 / BJ260 requires ≥30mm

[0070] BJ320 and QV band waveguide requirements ≥ 25mm

[0071] d) For the same layer of waveguide, the distance between the outer walls of the waveguide tubes must be ≥15mm

[0072] like Figure 3-Figure 9 As shown, the entire installation process of the satellite through-cabin waveguide connection structure includes:

[0073] Waveguide grouping: There are 54 traveling wave tube amplifiers in the forward return transmission segment link, which are respectively arranged in four areas of the north and south boards of the satellite (i.e. northeast, southeast, northwest, and southwest). The corresponding output multiplexers / filters are also arranged in the corresponding areas. Therefore, according to the position of the multiplexer, its output waveguides totaling 106 channels are divided into four groups, and each group is designed with a cabin penetration position, totaling four.

[0074] The position of the cabin penetration is determined; the determination of the cabin penetration position takes into account the position of the multiplexer output port and the operability of the final assembly. At the same time, its installation position on the cabin board should not affect the installation and operation of single-machine equipment, waveguide cables, etc. on both sides of the cabin board.

[0075] Selection of the interval between waveguide layers; taking the BJ120 waveguide as an example, the interval between two adjacent layers of waveguides should be greater than 35mm to ensure that the installation of waveguides of different layers does not interfere with each other. At the same time, on the premise of meeting the installation requirements, the interval between waveguides of different layers should be minimized, the size of the cabin notch should be compressed, and the size of the cabin notch 11 should be reduced.

[0076] The in-cabin waveguide 32 is welded to the special flange 31 to form an in-cabin waveguide assembly 3; the out-cabin waveguide 42 is welded to the out-cabin standard flange to form an out-cabin waveguide assembly 4;

[0077] According to the design position, a through-cabin notch 11 is set at the corresponding position of the satellite cabin panel 1. The size of the through-cabin notch 11 depends on the number of through-cabin waveguides, the waveguide specifications and the size of the through-cabin flange 2. Threaded holes are pre-buried around the through-cabin notch 11 of the satellite cabin panel 1 as mounting holes for the through-cabin flange 2.

[0078] Install the through-cabin flange 2 on the satellite cabin panel 1 (such as Figure 3 and Figure 4 shown);

[0079] Install the in-cabin waveguide assembly 3 (a welded assembly formed by the in-cabin section waveguide 32 and the special flange 31). One end of the in-cabin waveguide assembly 3 is connected to the in-cabin equipment (such as output filter / multiplexer, etc.), and the other end is fixed to the through-cabin flange 2 (such as Figure 5 and Figure 6 shown);

[0080] After the satellite is assembled, the outboard waveguide assembly 4 (welded assembly formed by outboard waveguide 42 and standard flange 41) is installed. One end of the outboard waveguide assembly 4 is connected to the antenna (or other outboard equipment) interface, and the other end is connected to the special flange 31 (such as Figure 7 , Figure 8 and Fig. 9 as shown).

[0081] Specifically, the satellite is a nearly hexahedral structure, including opposite south and north plates, opposite floor plates and back floors, and opposite east and west plates. The satellite cabin plate 1 of the present application is the floor plate, and the through-cabin flange 2 is connected to the floor plate. The south plate, the north plate, the opposite plate, and the back floor are connected to form a cylindrical structure, and the cabin is closed by connecting the opposite east and west plates to the cylindrical structure, and the antenna and the like are connected to the east and west plates.

[0082] Although the present invention is disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the claims of the present invention.

Claims

1. A satellite through-cabin waveguide connection structure, characterized in that: It comprises a satellite cabin plate (1), a cabin penetration flange (2), an in-cabin waveguide component (3), and an out-cabin waveguide component (4); A through-cabin notch (11) is designed on the satellite cabin panel (1); a through-cabin flange (2) is arranged at the position of the through-cabin notch (11) and is fixedly connected to the satellite cabin panel (1); an in-cabin waveguide component (3) is fixed on the through-cabin flange (2); and an out-cabin waveguide component (4) is fixed to the in-cabin waveguide component (3); The through-cabin flange (2) is designed with a cabin plate connection hole (21), a special flange connection hole (22), and a notch (23); The satellite cabin panel (1) is designed with a flange connection hole (12); The cabin panel connection hole (21) cooperates with the flange connection hole (12) to fix the cabin penetration flange (2) to the cabin penetration notch (11) of the satellite cabin panel (1); the special flange connection hole (22) is used to connect the cabin interior waveguide component (3); the cabin exterior waveguide component (4) passes through the notch (23) and is connected to the special flange connection hole (22); the connected cabin interior waveguide component (3) and cabin exterior waveguide component (4) constitute a cabin penetration waveguide; The in-cabin waveguide assembly (3) is formed by welding a special flange (31) and an in-cabin waveguide tube (32); the special flange (31) is connected to a special flange connection hole (22) of the through-cabin flange (2), thereby completing the installation and positioning of the in-cabin waveguide assembly (3); The special flange (31) comprises a flange body (311) and a connecting ear (313); the size of the flange body (311) is consistent with that of the standard flange (41); the number of connecting ears (313) on a single special flange (31) is not less than 2, and the connecting ears (313) are located on two opposite sides of the flange body (311); each connecting ear (313) is provided with a first mounting hole (314) for connecting to the through-cabin flange (2), and the first mounting hole (314) is used to cooperate with the special flange connecting hole (22); the flange body (311) is provided with a second mounting hole (312) for connecting to the standard flange (41) of the outboard waveguide section, and the second mounting hole (312) is used to connect to the standard flange (41).

2. A satellite through-cabin waveguide connection structure according to claim 1, characterized in that: The outboard waveguide component (4) is formed by welding a standard flange (41) and an outboard waveguide tube (42); the standard flange (41) is connected to a special flange (31) of the inboard waveguide component (3) to complete the docking of the inboard waveguide component (3) and the outboard waveguide component (4).

3. The connection structure of a satellite through-cabin waveguide according to claim 1, characterized in that: The single-side size of the cabin penetration notch (11) is 5-10 mm larger than the outer envelope size of all cabin penetration waveguides, and the center position of the cabin penetration notch (11) is consistent with the center of the waveguide group penetrating the cabin at this location; The flange connection hole (12) is a threaded hole; the position of the flange connection hole (12) avoids other equipment on the cabin and shall not interfere with other equipment on the satellite; the spacing between adjacent flange connection holes (12) is no more than 200 mm, and the relative position accuracy is better than ±0.1 mm.

4. The connection structure of a satellite through-cabin waveguide according to claim 1, characterized in that: The size of the connecting ear (313) is as small as possible while satisfying the installation space and ensuring reliable connection; The first mounting hole (314) is a light hole; The second mounting hole (312) is a threaded hole, and the relative position accuracy between the second mounting hole (312) and the standard flange (41) is better than ±0.1 mm.

5. The connection structure of a satellite through-cabin waveguide according to claim 2, characterized in that: The standard flange (41) is provided with a third mounting hole (411), the third mounting hole (411) is a light hole, the relative position accuracy of the third mounting hole (411) is not greater than ±0.1, and the third mounting hole (411) matches the second mounting hole (312).

6. The satellite through-cabin waveguide connection structure according to claim 1, characterized in that: The through-cabin flange (2) is a flat plate structure, the single-side dimension of the through-cabin flange (2) is 20-30 mm larger than the outer envelope dimension of all through-cabin waveguides, the thickness is not less than 3 mm, and the flatness is better than 0.1 mm / 100 mm×100 mm; the through-cabin flange (2) may be optionally designed with reinforcing ribs; The cabin panel connection hole (21) is overlapped with the flange connection hole (12) at the satellite cabin panel (1), and is required to be a light hole, matching the connection hole (12), and the relative position accuracy is better than ±0.1 mm; The relative position of the special flange connection hole (22) after being installed on the star coincides with the first installation hole (314) of the special flange (31), and the special flange connection hole (22) matches the first installation hole (314) on the special flange (31), with a position accuracy better than ±0.1 mm; The size of the notch (23) is larger than the size of the standard flange (41) on the outboard waveguide assembly (4); the single-side size of the notch (23) is greater than or equal to the single-side size of the standard flange (41) + 1.5 mm; in the connection direction with the special flange (31), the size of the notch (23) is smaller than the size of the special flange (31), and is at least 3 + R mm smaller, where R is the aperture of the first mounting hole (314).

7. The connection structure of a satellite through-cabin waveguide according to claim 1, characterized in that: The in-cabin waveguide component (3) adopts a layered design, and the layering rules are as follows: a) The number of floors shall not exceed 7; b) The satellite is a hexahedral structure, including opposite south and north plates, opposite ground plates and back plates, and opposite east and west plates. The satellite cabin plate (1) is the ground plate, and the highest waveguide is no more than 300 mm away from the south plate and / or the north plate. c) For waveguides of different specifications, the interlayer spacing between the upper and lower waveguides follows the following rules: The minimum spacing between the upper and lower layers of the in-cabin waveguide components (3) and between the upper and lower layers of the out-cabin waveguide components (4) is greater than 5 mm; d) For the same layer of waveguide, the distance between the outer walls of the waveguide tubes must be ≥15mm.

8. The satellite through-cabin waveguide connection structure according to claim 1, characterized in that: The installation of the in-cabin waveguide component (3) and the out-cabin waveguide component (4) follows the following principles: Fixing the through-cabin flange (2) on the satellite cabin plate (1); First, install the in-cabin waveguide assembly (3) and fix it on the through-cabin flange (2). After closing the cabin, install the out-cabin waveguide assembly (4); When installing the in-cabin waveguide assembly (3) and the out-cabin waveguide assembly (4), both follow the installation order from bottom to top, that is, first install the lower layer waveguide, and then install layer by layer.

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