Functional compound type lightweight supporting structure of soft X-ray optical system

Abstract

The invention provides a functional composite lightweight supporting structure of a soft X-ray optical system, which comprises a bearing cylinder, an outer shielding unit and an inner shielding unit, and is characterized in that the outer shielding unit is coupled to the outer side of the bearing cylinder, and the inner shielding unit is coupled to the inner side of the bearing cylinder; the upper end of the bearing cylinder is provided with a lens unit, and the lower end is provided with a detector unit. The soft X-ray optical system supporting structure solves the problems that in the prior art, a soft X-ray optical system supporting structure is heavy in weight, not high in mechanical property and poor in temperature uniformity, stray light of the soft X-ray optical system supporting structure enters a camera, and influences of space high-capacity particles and electrons on a detector are shielded. And 3, how to improve the optical, mechanical and thermal function fusion and integration level of the soft X-ray optical system supporting structure.

Description

Technical Field

[0001] This invention relates to the technical field of soft X-ray optical instruments, and more particularly to a functional composite lightweight support structure for a soft X-ray optical system. Background Technology

[0002] Soft X-ray astronomy is an important component of astronomy. Scientists can gain in-depth understanding of the evolution and transformation of high-energy celestial bodies in the universe by analyzing soft X-ray information, thereby achieving the goal of exploring the mysteries of celestial bodies. As a space optical remote sensing instrument, lightweight, high rigidity, high thermal conductivity, and homogenization have always been technical challenges in structural design. In addition, due to the inherent characteristics of soft X-rays, soft X-ray optical instruments are highly sensitive to stray light and charged particles, requiring shielding treatment through structure. Using multiple structures to independently achieve the above functions, with each structure superimposed on the others, increases structural complexity and weight, reduces structural mechanical performance, and also increases the cost of instrument development.

[0003] Therefore, how to solve the problems of heavy weight, low mechanical performance, and poor temperature uniformity of the support structure of soft X-ray optical systems, as well as how to suppress stray light from entering the camera and shield the detector from the influence of high-energy particles and electrons in the space, have become technical problems that need to be solved.

[0004] In addition, how to improve the integration and fusion of optical, mechanical, and thermal functions of soft X-ray optical systems has become a technical problem that needs to be solved. Summary of the Invention

[0005] The purpose of this invention is to provide a functional, lightweight, composite support structure for soft X-ray optical systems, mainly addressing the following problems in the prior art: 1. How to solve the problems of heavy weight, low mechanical performance, and poor temperature uniformity of soft X-ray optical system support structures; 2. How to solve the problems of stray light entering the camera interior and the influence of high-energy particles and electrons on the detector in the shielding space; 3. How to improve the integration and fusion of optical, mechanical, and thermal functions in the soft X-ray optical system support structure.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a functional composite lightweight support structure for a soft X-ray optical system, characterized in that: the functional composite lightweight support structure for a soft X-ray optical system includes a load-bearing cylinder, an outer shielding unit, and an inner shielding unit, the outer shielding unit being coupled to the outside of the load-bearing cylinder, and the inner shielding unit being coupled to the inside of the load-bearing cylinder; a lens unit is installed at the upper end of the load-bearing cylinder, and a detector unit is installed at the lower end of the load-bearing cylinder.

[0007] Furthermore, the functional composite lightweight support structure is used to support and control the relative position of the detector unit and the lens unit. According to the requirements of the lens unit, the relative position tolerance must be controlled within 0.01mm and the angle must be controlled within 1′. The load-bearing cylinder is designed into a cylindrical shape using resin-based carbon fiber composite material and encloses the area between the lens unit and the detector unit.

[0008] Furthermore, a first titanium alloy metal part is attached to the upper end of the load-bearing cylinder, and a first interface for mounting the lens unit is machined on the first titanium alloy metal part;

[0009] A second titanium alloy metal part is attached to the lower end of the load-bearing cylinder, and a second interface for installing the detector unit is machined on the second titanium alloy metal part.

[0010] Furthermore, the outer shielding unit is made of copper; the thickness of the outer shielding unit is determined by the amount of heavy ion shielding in space; the outer shielding unit is bonded to the load-bearing cylinder with silicone rubber.

[0011] Furthermore, the inner shielding unit is made of graphite sheet; the thickness of the inner shielding unit is determined by the amount of electrons that need to be absorbed when entering the camera; the inner shielding unit is bonded to the load-bearing cylinder with silicone rubber.

[0012] Furthermore, after the load-bearing cylinder is formed, it undergoes vacuum degassing treatment; the degassing temperature, vacuum pressure, and degassing time are determined by the maximum temperature that the matrix resin of the carbon fiber composite material used can withstand and the amount of condensable volatiles controlled.

[0013] Furthermore, after the load-bearing cylinder and the outer shielding unit are coupled and bonded, a vacuum degassing process is performed; the degassing temperature, vacuum pressure, and degassing time are determined by the maximum temperature that the silicone rubber used can withstand and the amount of condensable volatiles controlled.

[0014] Furthermore, after the load-bearing cylinder and the inner shielding unit are coupled and bonded, a vacuum degassing process is performed; the degassing temperature, vacuum pressure, and degassing time are determined by the maximum temperature that the silicone rubber used can withstand and the amount of condensable volatiles controlled.

[0015] Furthermore, the outer shielding unit, inner shielding unit, first titanium alloy metal part, second titanium alloy metal part, first interface and second interface are all electrically conductive and bonded to the load-bearing cylinder; the functional composite lightweight support structure of the soft X-ray optical system also includes a grounding pile interface for installing a conductive cable connected to the satellite, and the grounding pile interface is a threaded hole machined on the first titanium alloy metal part.

[0016] In view of the above technical features, the present invention has the following beneficial effects:

[0017] 1. This invention discloses a functional composite lightweight support structure for a soft X-ray optical system. The load-bearing cylinder is made of resin-based carbon fiber composite material, which is lightweight and has high rigidity, thus reducing the weight of the functional composite lightweight support structure for the soft X-ray optical system. The load-bearing cylinder configuration effectively suppresses stray light from entering the camera interior from the region between the lens unit and the detector unit. The load-bearing cylinder made of resin-based carbon fiber composite material can also absorb low-energy electrons, reducing the impact on detector electronic noise.

[0018] 2. The present invention provides a functional composite lightweight support structure for a soft X-ray optical system, wherein a first titanium alloy metal part and a second titanium alloy metal part with good machinability are bonded to a load-bearing cylinder, which is beneficial to ensuring the installation accuracy and relative position of the lens and detector components.

[0019] 3. The present invention provides a functional composite lightweight support structure for a soft X-ray optical system. A copper outer shielding unit is bonded to the load-bearing cylinder, improving the overall rigidity and mechanical properties of the cylinder. Copper has excellent thermal conductivity, improving the temperature uniformity of the load-bearing cylinder and helping to ensure the relative positional accuracy of the lens unit and detector unit.

[0020] 4. The present invention provides a functional composite lightweight support structure for a soft X-ray optical system. The inner shielding unit is made of graphite sheet to absorb electrons entering the camera and reduce the influence of detector electronic noise. Furthermore, the high thermal conductivity of the graphite sheet improves the temperature uniformity of the functional composite lightweight support structure for the soft X-ray optical system, which is beneficial for ensuring the relative positional accuracy of the lens unit and the detector unit.

[0021] 5. The functional composite lightweight support structure of the soft X-ray optical system of the present invention, wherein the load-bearing cylinder and the outer shielding unit are coupled and bonded together before vacuum degassing, and the load-bearing cylinder and the outer shielding unit are coupled and bonded together before vacuum degassing, can reduce the impact of vacuum degassing of silicone rubber on the optical mirror surface after coupling.

[0022] 6. The present invention provides a functional composite lightweight support structure for a soft X-ray optical system. Because copper and graphite sheets have good conductivity, the load-bearing cylinder made of resin-based carbon fiber composite material, the outer shielding unit made of copper, and the inner shielding unit made of graphite sheets all reduce the resistance of the functional composite lightweight support structure for the soft X-ray optical system, thus avoiding electrostatic discharge problems caused by static accumulation in the structure.

[0023] 7. The present invention provides a functional composite lightweight support structure for a soft X-ray optical system. In addition to providing support and positioning functions for the lens unit and detector unit of the soft X-ray optical system, it integrates stray light suppression, charged particle shielding, structural mechanical enhancement, and temperature homogenization systems into the structure. Through the functional design system of the support structure, it meets various requirements of optics, thermal control, and structure, which corresponds to the description of "functional composite" in the "functional composite lightweight support structure for a soft X-ray optical system". Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a functional composite lightweight support structure for a soft X-ray optical system in specific embodiment 1.

[0025] Figure 2 This is a schematic diagram of the load-bearing cylinder in specific embodiment 1.

[0026] Figure 3 This is a schematic diagram of the connection between the load-bearing cylinder, the first titanium alloy metal part, and the second titanium alloy metal part in specific embodiment 1.

[0027] Figure 4 This is a schematic diagram of the inner shielding unit in specific embodiment 1.

[0028] Figure 5 This is a schematic diagram of the structure of the outer shielding unit in specific embodiment 1.

[0029] Figure 6 This is a schematic diagram showing the installation positions of the lens unit and detector unit in specific embodiment 1.

[0030] In the diagram: 1. Load-bearing cylinder; 2. Outer shielding unit; 3. Inner shielding unit; 4. First titanium alloy metal component; 5. First interface; 6. Second titanium alloy metal component; 7. Second interface; 8. Grounding stake interface; 9. Lens unit; 10. Detector unit. Detailed Implementation

[0031] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0032] See Figures 1 to 6Specific Embodiment 1 provides a functional composite lightweight support structure for a soft X-ray optical system, including a support cylinder 1, an outer shielding unit 2, and an inner shielding unit 3. The outer shielding unit 2 is coupled to the outside of the support cylinder 1, and the inner shielding unit 3 is coupled to the inside of the support cylinder 1. A lens unit 9 is installed at the upper end of the support cylinder 1, and a detector unit 10 is installed at the lower end of the support cylinder 1. The functional composite lightweight support structure is used to support and control the relative position of the detector unit 10 and the lens unit 9. Here, the "functional composite lightweight support structure" refers to the composite support structure jointly formed by the support cylinder 1, the outer shielding unit 2, the inner shielding unit 3, the first titanium alloy metal part 4, and the second titanium alloy metal part 6. To ensure the optical performance of the lens, the relative position tolerance of the lens unit 9 must be controlled within 0.01 mm, and the angle must be controlled within 1′. The load-bearing cylinder 1 is made of resin-based carbon fiber composite material and designed in a cylindrical shape, enclosing the area between the lens unit 9 and the detector unit 10. The resin-based carbon fiber composite material can absorb low-energy electrons, reducing the impact on the detector signal, i.e., reducing electronic interference. The load-bearing cylinder 1 also has the characteristics of being lightweight and having high rigidity, which helps to reduce the weight of the structure.

[0033] The load-bearing cylinder 1 also serves as a component of the light shield of the soft X-ray optical system (i.e., as a stray light suppression structure), blocking or shielding stray light from entering the camera.

[0034] A first titanium alloy metal part 4 is attached to the upper end of the support cylinder 1, and a first interface 5 for mounting the lens unit 9 is machined on the first titanium alloy metal part 4; a second titanium alloy metal part 6 is attached to the lower end of the support cylinder 1, and a second interface 7 for mounting the detector unit 10 is machined on the second titanium alloy metal part 6. The first titanium alloy metal part 4 and the second titanium alloy metal part 6 have good machinability, ensuring the dimensional and geometric tolerance accuracy of the upper and lower end faces of the functional composite lightweight support structure, and enabling high-precision installation and positioning of the lens unit 9 and the detector unit 10.

[0035] The outer shielding unit 2 is made of copper, which can absorb charged heavy ions in space. Copper has high thermal conductivity. The thickness of the outer shielding unit 2 is determined by the amount of heavy ion shielding in space. The outer shielding unit 2 is bonded to the load-bearing cylinder 1 with silicone rubber, which realizes the coupling between the outer shielding unit 2 and the load-bearing cylinder 1. This not only absorbs heavy ions but also improves the overall rigidity of the load-bearing cylinder 1 and enhances its mechanical properties.

[0036] The inner shielding unit 3 is made of graphite sheet, which absorbs electrons entering the camera. Graphite sheet has high thermal conductivity. The thickness of the inner shielding unit 3 is determined by the amount of electrons that need to be absorbed when entering the camera. The inner shielding unit 3 is bonded to the load-bearing cylinder 1 with silicone rubber.

[0037] The outer shielding unit 2 and the inner shielding unit 3 have high thermal conductivity, which improves the temperature uniformity of the load-bearing cylinder 1 and helps to ensure the relative positional accuracy of the lens unit 9 and the detector unit 10.

[0038] After the load-bearing cylinder 1 is formed, it undergoes vacuum degassing to remove moisture and volatile small-molecule materials, thus preventing structural changes or the deposition of moisture and volatile small-molecule materials on the lens before camera integration, which could affect lens sharpness. The degassing temperature, vacuum pressure, and degassing time are determined by the maximum temperature that the matrix resin used in the resin-based carbon fiber composite material can withstand and the amount of condensable volatiles to be controlled.

[0039] After the load-bearing cylinder 1 and the outer shielding unit 2 are coupled and bonded together, a vacuum degassing process is performed to reduce the impact of vacuum degassing of the silicone rubber after coupling on the optical system. The degassing temperature, vacuum pressure, and degassing time are determined by the maximum temperature that the silicone rubber used can withstand and the amount of condensable volatiles controlled.

[0040] After the load-bearing cylinder 1 and the inner shielding unit 3 are coupled and bonded together, a vacuum degassing process is performed to reduce the impact of vacuum degassing of the silicone rubber after coupling on the optical system. The degassing temperature, vacuum pressure, and degassing time are determined by the maximum temperature that the silicone rubber used can withstand and the amount of condensable volatiles controlled.

[0041] The outer shielding unit 2, inner shielding unit 3, first titanium alloy metal part 4, second titanium alloy metal part 6, first interface 5 and second interface 7, which are bonded to the load-bearing cylinder 1, are all electrically conductive. If other commonly used metal parts are used on the load-bearing cylinder 1, these metal parts are also electrically conductive with the outer shielding unit 2, inner shielding unit 3, first titanium alloy metal part 4, second titanium alloy metal part 6, first interface 5 and second interface 7. Combined with the grounding pile interface 8, the static electricity accumulation of the structure itself is reduced.

[0042] The functional composite lightweight support structure of the soft X-ray optical system also includes a grounding stake interface 8, which is connected to the satellite's grounding power via a wire to reduce static electricity accumulation within the structure itself. The grounding stake interface 8 is a threaded hole machined into the first titanium alloy metal part 4.

[0043] In this embodiment 1, a functional composite lightweight support structure for a soft X-ray optical system employs a structure in which a lens unit 9 is mounted on the upper end of a support cylinder 1, and a detector unit 10 is mounted on the lower end of the support cylinder 1. An external shielding unit 3 and an internal shielding unit 2 are coupled to the outer and inner sides of the support cylinder 1, respectively. The support cylinder 1, as the main body of the support structure, is made of resin-based carbon fiber composite material and designed in the shape of a support cylinder 1. As a component of the light shield of the soft X-ray optical system, it blocks stray light from entering the camera, reducing the weight of the support component while absorbing low-energy electrons, thus reducing the background noise of the detector.

[0044] Both the upper and lower ends of the load-bearing cylinder 1 are fitted with high-performance titanium alloy metal parts (i.e., the first titanium alloy metal part 4 and the second titanium alloy metal part 6). The corresponding titanium alloy metal parts are provided with interfaces (i.e., the first interface 5 and the second interface 7) for mounting the flexible X-ray lens assembly (i.e., the lens unit 9) and the detector assembly (i.e., the detector unit 10). The relative position and installation accuracy of the lens unit and the detector unit are ensured by precision machining.

[0045] The outer shielding unit 2 is made of copper and is bonded to the load-bearing cylinder 1 with silicone rubber. Its thickness is determined according to the amount of heavy ion shielding in space, which greatly improves the overall rigidity and mechanical properties of the load-bearing cylinder 1, and also improves the temperature uniformity of the load-bearing cylinder 1, thereby ensuring the relative positional accuracy of the lens and detector unit.

[0046] The inner shielding unit 3 is made of graphite sheet and is glued to the load-bearing cylinder 1. Its thickness is determined by the amount of electrons that need to be absorbed before entering the camera. This reduces the impact of electrons entering the camera on the detector unit 10 to a certain extent, and greatly improves the temperature uniformity of the support structure, thereby further ensuring the relative positional accuracy of the lens and the detector unit.

[0047] After the carbon fiber load-bearing cylinder 1 is formed and after the load-bearing cylinder 1 is coupled and bonded to the inner and outer shielding units 2, vacuum degassing is performed on each of them. This further enhances the stability of the overall structure and reduces the impact of vacuum degassing of the silicone rubber after coupling on the optical system.

[0048] A grounding pile interface 8 was designed to connect to the wire. Together with the load-bearing cylinder 1, inner shielding unit 3, and outer shielding unit 2 made of resin-based carbon fiber composite material, the cumulative electrostatic potential energy of the structure was reduced by more than 98%.

[0049] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A functional composite lightweight support structure for a soft X-ray optical system, characterized in that: The functional composite lightweight support structure of the soft X-ray optical system includes a load-bearing cylinder (1), an outer shielding unit (2) and an inner shielding unit (3). The outer shielding unit (2) is coupled to the outside of the load-bearing cylinder (1), and the inner shielding unit (3) is coupled to the inside of the load-bearing cylinder (1). A detector unit (10) is installed at the lower end of the load-bearing cylinder (1), and a lens unit (9) is installed at the upper end of the load-bearing cylinder (1).

2. The functional composite lightweight support structure for a soft X-ray optical system according to claim 1, characterized in that: The functional composite lightweight support structure is used to support and control the relative position of the detector unit (10) and the lens unit (9). According to the requirements of the lens unit (9), the relative position tolerance must be controlled within 0.01mm and the angle must be controlled within 1′. The load-bearing cylinder (1) is designed into a cylindrical shape using resin-based carbon fiber composite material and encloses the area between the lens unit (9) and the detector unit (10).

3. The functional composite lightweight support structure for a soft X-ray optical system according to claim 1, characterized in that: The first titanium alloy metal part (4) is attached to the upper end of the load-bearing cylinder (1), and the first interface (5) for mounting the lens unit is machined on the first titanium alloy metal part (4). The lower end of the load-bearing cylinder (1) is attached to the second titanium alloy metal part (6), and the second interface (7) for installing the detector unit is machined on the second titanium alloy metal part (6).

4. The functional composite lightweight support structure for a soft X-ray optical system according to claim 1, characterized in that: The outer shielding unit (2) is made of copper; the thickness of the outer shielding unit (2) is determined by the amount of heavy ion shielding in space; the outer shielding unit (2) is bonded to the load-bearing cylinder (1) by silicone rubber.

5. The functional composite lightweight support structure for a soft X-ray optical system according to claim 1, characterized in that: The inner shielding unit (3) is made of graphite sheet; the thickness of the inner shielding unit (3) is determined by the amount of electrons that need to be absorbed when entering the camera; the inner shielding unit (3) is bonded to the load-bearing cylinder (1) by silicone rubber.

6. The functional composite lightweight support structure for a soft X-ray optical system according to claim 2, characterized in that: After the load-bearing cylinder (1) is formed, it is subjected to vacuum degassing treatment; the degassing temperature, vacuum pressure and degassing time are determined by the maximum temperature that the matrix resin used in the resin-based carbon fiber composite material can withstand and the amount of condensable volatiles controlled.

7. The functional composite lightweight support structure for a soft X-ray optical system according to claim 4, characterized in that: After the load-bearing cylinder (1) and the outer shielding unit (2) are coupled and pasted together, vacuum degassing is then performed.

8. The functional composite lightweight support structure for a soft X-ray optical system according to claim 5, characterized in that: After the load-bearing cylinder (1) and the inner shielding unit (3) are coupled and pasted together, vacuum degassing is then performed.

9. The functional composite lightweight support structure for a soft X-ray optical system according to claim 1, characterized in that: The outer shielding unit (2), inner shielding unit (3), first titanium alloy metal part (4), second titanium alloy metal part (6), first interface (5) and second interface (7) bonded to the load-bearing cylinder are all electrically conductive; the functional composite lightweight support structure of the soft X-ray optical system also includes a grounding pile interface (8), which is a threaded hole machined on the first titanium alloy metal part (4).

Images