Lens mounting structure of experimental space observation window

Abstract

The invention relates to the technical field of experimental equipment, in particular to a lens mounting structure of an experimental space observation window. The lens mounting structure comprises a first flange plate and a second flange plate, a first center hole is formed in the first flange plate, and a circle of first threaded blind holes and a circle of first threaded holes are sequentially formed in the outer side of the first center hole from inside to outside. A second center hole is formed in the second flange plate, and a circle of second threaded holes are formed in the outer side of the second center hole. The first center hole and the second center hole are stepped holes, the diameter of the second flange plate is smaller than that of the first flange plate, and when the second flange plate and the first flange plate are coaxially attached, the second threaded hole and the first threaded blind hole are in coaxial butt joint, and the third section hole and the first section hole are in butt joint to form a containing groove for a lens. The orthographic projection of the second flange plate is located on the inner side of the circle of first threaded holes. According to the structure, the lens can be mounted firstly, then the lens mounting structure is mounted on an experimental space, and the lens is convenient to mount, fix and replace.

Description

Technical Field

[0001] The invention relates to the technical field of experimental equipment, and in particular to a lens mounting structure of an experimental space observation window. Background Art

[0002] With the rapid development of science and technology, countries are vigorously developing hypersonic aircraft, and developing different types of propellants, aircraft thermal insulation and plasma technologies to avoid electromagnetic and infrared detection. Such aircraft have their own strategic significance.

[0003] When an aircraft is flying at high speed, the boundary of the aircraft will interact with the atmosphere, forming a strong bow shock wave around the head, causing the aircraft head to generate heat due to friction with the atmosphere. At the same time, due to the viscous dissipation effect and the strong compression of the shock wave, the surrounding atmosphere will heat up rapidly, which will cause a heating effect on the surface of the aircraft head, causing the surface material to heat up rapidly, resulting in ablation and plasma generation; in the near-space environment, the infrared characteristics of the aircraft trail are one of the main directions of detection. Due to the different propellants, there will be certain differences in the strength of its infrared characteristics. The experimental measurement of the infrared characteristics of the trail cloud is a key link in the research. All the accompanying effects caused by high-speed flight or the optoelectronic characteristics of the aircraft in the thin atmosphere need to be simulated by ground simulation experimental equipment to verify the reliability and accuracy of the theory.

[0004] Although wind tunnels, vacuum tanks and other closed tanks or boxes have been proposed to simulate specific environments, since the windows (lenses) used in general observation windows can only transmit visible light or part of the electromagnetic frequency band, different tests require the replacement of different windows (lenses). Summary of the invention

[0005] The purpose of the present invention is to provide a lens mounting structure for an experimental space observation window, which is convenient for mounting, fixing and replacing the lens.

[0006] In order to achieve the above-mentioned object, in a first aspect, the present invention provides a lens mounting structure for an experimental space observation window, comprising:

[0007] A first flange is provided with a first center hole and a plurality of first threaded holes penetrating the first flange, the plurality of first threaded holes are arranged around the first center hole, the first flange is further provided with a plurality of first threaded blind holes, the plurality of first threaded blind holes are arranged around the first center hole and are located between the first center holes of the first threaded holes, the first center hole is a stepped hole, divided into a first section hole and a second section hole, the diameter of the first section hole is larger than the diameter of the second section hole, and the first section hole and the first threaded blind holes are located on the same side of the first flange;

[0008] The second flange is provided with a second center hole and a plurality of second threaded holes penetrating the second flange, the plurality of second threaded holes are arranged around the second center hole, the second center hole is a stepped hole, and is divided into a third section hole and a fourth section hole, and the diameter of the third section hole is greater than the diameter of the fourth section hole;

[0009] The diameter of the second flange is smaller than that of the first flange. When the second flange is coaxially pressed against the first flange, the second threaded hole is coaxially connected with the first threaded blind hole, and the third section hole is connected with the first section hole to form a receiving groove for placing the lens. The orthographic projection of the second flange is located on the inner side of a circle of the first threaded holes.

[0010] Optionally, a first sealing ring is provided at the bottom of the first section hole, and a second sealing ring is provided at the bottom of the third section hole.

[0011] Optionally, a third sealing ring is provided on the fitting surfaces of the first flange and the second flange.

[0012] Optionally, a plurality of second threaded blind holes are provided on a side of the second flange away from the first flange for installing a mounting device for instruments and equipment.

[0013] Optionally, the number of the second threaded blind holes is three and they are distributed in a triangle.

[0014] Optionally, the number of the second threaded blind holes is four and they are distributed in a rectangular shape.

[0015] Optionally, the thickness of the first flange and the second flange are both greater than the thickness of the lens.

[0016] The above technical solution of the present invention has the following advantages:

[0017] The lens mounting structure of the experimental space observation window provided by the present invention comprises a first flange and a second flange. The first flange is provided with a first center hole, and a circle of first threaded blind holes and a circle of first threaded holes are sequentially arranged from the inside to the outside of the first center hole. The second flange is provided with a second center hole, and a circle of second threaded holes is provided on the outside of the second center hole. The first center hole and the second center hole are both stepped holes. The diameter of the second flange is smaller than the diameter of the first flange. When the second flange is coaxially attached to the first flange, the second threaded hole is coaxially docked with the first threaded blind hole, and the third section of the hole is docked with the first section of the hole to form a receiving groove for the lens. The orthographic projection of the second flange is located on the inner side of the circle of the first threaded holes. The structure can install the lens first and then install the lens mounting structure on the experimental space, which is convenient for installation, fixation and replacement of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings of the present invention are provided for illustrative purposes only, and the proportions and quantities of the components in the drawings may not necessarily be consistent with the actual products.

[0019] Figure 1 is a front view schematic diagram of a first flange in an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A schematic diagram of the middle AA section of the first flange;

[0021] Figure 3 yes Figure 1 A schematic rear view of the first flange;

[0022] Figure 4 is a front view schematic diagram of a second flange in an embodiment of the present invention;

[0023] Figure 5 yes Figure 4 A rear view schematic diagram of the second flange;

[0024] Figure 6 is a cross-sectional schematic diagram of a first flange and a second flange in a docking state according to an embodiment of the present invention;

[0025] Figure 7 yes Figure 6 A cross-sectional schematic diagram of a first flange and a second flange in a docking state with a lens installed;

[0026] Figure 8 It is a structural schematic diagram of a lens mounting structure of an experimental space observation window installed in an experimental space in an embodiment of the present invention.

[0027] In the figure:

[0028] 1: First flange;

[0029] 11: first center hole;

[0030] 111: first section hole;

[0031] 112: second hole;

[0032] 12: first threaded hole;

[0033] 13: first threaded blind hole;

[0034] 14: first sealing ring;

[0035] 2: Second flange;

[0036] 21: second center hole;

[0037] 211: The third hole;

[0038] 212: Fourth section hole;

[0039] 22: second threaded hole;

[0040] 23: second sealing ring;

[0041] 24: second threaded blind hole;

[0042] 3: Lens;

[0043] 4: Experimental space. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] like Figure 1 to Figure 7 As shown, the lens mounting structure of the experimental space observation window provided by the embodiment of the present invention includes a first flange 1 and a second flange 2.

[0046] See also Figure 1 to Figure 3 As shown, the first flange 1 is provided with a first center hole 11 penetrating the first flange 1 and a plurality of first threaded holes 12, the plurality of first threaded holes 12 are arranged around the first center hole 11, and a circle of first threaded holes 12 is coaxial with the first center hole 11. The first flange 1 is also provided with a plurality of first threaded blind holes 13, the plurality of first threaded blind holes 13 are arranged around the first center hole 11, and are located between the first center holes 11 of the first threaded holes 12, that is, a circle of first threaded blind holes 13 is located inside a circle of first threaded holes 12, and a circle of first threaded blind holes 13 is coaxial with the first center hole 11. The first center hole 11 is a stepped hole, which is divided into a first section hole 111 and a second section hole 112 in the axial direction, the diameter of the first section hole 111 is larger than the diameter of the second section hole 112, and the first section hole 111 and the first threaded blind holes 13 are located on the same side of the first flange 1.

[0047] See also Figure 4 and Figure 5 As shown, the second flange 2 is provided with a second center hole 21 penetrating the second flange 2 and a plurality of second threaded holes 22. The plurality of second threaded holes 22 are arranged around the second center hole 21. The second center hole 21 is a stepped hole, which is divided into a third hole section 211 and a fourth hole section 212 in the axial direction. The diameter of the third hole section 211 is greater than the diameter of the fourth hole section 212.

[0048] See also Figure 6 and Figure 7As shown, the diameter of the second flange 2 is smaller than that of the first flange 1. When the second flange 2 is coaxially pressed against the first flange 1, the second threaded hole 22 is coaxially connected with the first threaded blind hole 13, and the third section hole 211 is connected with the first section hole 111 to form a receiving groove for placing the lens 3. The orthographic projection of the second flange 2 is located on the inner side of a circle of the first threaded holes 12, that is, the second flange 2 will not block the first threaded holes 12 after installation.

[0049] See also Figure 7 and Figure 8 As shown, when in use, the lens 3 is placed in the first section hole 111 of the first flange 1, the second flange 2 is covered on the first flange 1, the second flange 2 is coaxially close to the first flange 1, the third section hole 211 is connected to the first section hole 111 to form a receiving groove for the lens 3, the second threaded hole 22 is coaxially connected to the first threaded blind hole 13, and the two are locked and fixed with screws. During the locking process, it is necessary to ensure that the screws are tightened step by step to prevent the lens 3 from breaking due to uneven force. Then the assembled first flange 1 and the second flange 2 are installed on the experimental space 4. Specifically, the first threaded hole 12 on the first flange 1 is aligned with the screw hole on the experimental space 4, and the screws are tightened and fixed to achieve the installation of the lens. This structure can install the lens first and then install the lens installation structure on the experimental space 4, which is convenient for installation, fixing and replacement of the lens. In addition, even for lenses of different sizes, the sizes of the first center hole and the second center hole of different sizes can be changed to match the installation of lenses of different sizes while ensuring that the position of the first threaded hole 12 remains unchanged.

[0050] For some examples, see Figure 1 , Figure 2 and Figure 4 As shown, a first sealing ring 14 is provided at the bottom of the first hole 111, and a second sealing ring 23 is provided at the bottom of the third hole 211. The diameter of the first sealing ring 14 is slightly smaller than the lens 3 and is coaxial with the second hole 112. Similarly, the diameter of the second sealing ring 23 is slightly smaller than the lens 3 and is coaxial with the fourth hole 212 to improve the sealing performance.

[0051] In order to further improve the sealing performance, in one example, a third sealing ring (not shown in the figure) is provided on the fitting surfaces of the first flange 1 and the second flange 2 .

[0052] In the experiment, the corresponding instruments will be set up outside the experimental observation window. In order to facilitate the installation of instruments and equipment, in some examples, see Figure 5 As shown in the adapter 8, a plurality of second threaded blind holes 24 are provided on the side of the second flange 2 away from the first flange 1 for installing the mounting device of the instrument. When installing the instrument, the lens in the lens mounting structure will not be affected, the lens will not be broken due to uneven force, and the installation of the mounting device of the instrument is convenient.

[0053] In order to provide a more stable connection for the erection device, in one example, the number of the second threaded blind holes 24 is three and they are distributed in a triangular shape. In another example, the number of the second threaded blind holes 24 is four and they are distributed in a rectangular shape.

[0054] In order to prevent the first flange 1 and the second flange 2 from being deformed, thereby improving the experimental test accuracy, preferably, the thickness of the first flange 1 and the second flange 2 is greater than the thickness of the lens 3 .

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that not every embodiment contains only one independent technical solution. In the absence of a conflict of solutions, the various technical features mentioned in each embodiment can be combined in any manner to form other implementation methods that can be understood by those skilled in the art.

[0056] In addition, without departing from the scope of the present invention, the technical solutions described in the aforementioned embodiments may be modified, or some of the technical features may be replaced by equivalents, without causing the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lens mounting structure for an experimental space observation window, characterized in that: include: A first flange is provided with a first center hole and a plurality of first threaded holes penetrating the first flange, the plurality of first threaded holes are arranged around the first center hole, the first flange is further provided with a plurality of first threaded blind holes, the plurality of first threaded blind holes are arranged around the first center hole and are located between the first center holes of the first threaded holes, the first center hole is a stepped hole, divided into a first section hole and a second section hole, the diameter of the first section hole is larger than the diameter of the second section hole, and the first section hole and the first threaded blind hole are located on the same side of the first flange; A second flange is provided with a second center hole and a plurality of second threaded holes penetrating the second flange, the plurality of second threaded holes are arranged around the second center hole, the second center hole is a stepped hole, and is divided into a third section hole and a fourth section hole, and the diameter of the third section hole is greater than the diameter of the fourth section hole; The diameter of the second flange is smaller than that of the first flange. When the second flange is coaxially and tightly attached to the first flange, the second threaded hole is coaxially connected to the first threaded blind hole, and the third section hole is connected to the first section hole to form a receiving groove for placing a lens, and the orthographic projection of the second flange is located on the inner side of a circle of first threaded holes.

2. The lens mounting structure according to claim 1, characterized in that: A first sealing ring is provided at the bottom of the first section hole, and a second sealing ring is provided at the bottom of the third section hole.

3. The lens mounting structure according to claim 1, characterized in that: A third sealing ring is provided on the mating surfaces of the first flange and the second flange.

4. The lens mounting structure according to claim 1, characterized in that: A plurality of second threaded blind holes are provided on a side of the second flange away from the first flange for installing a mounting device for instruments and equipment.

5. The lens mounting structure according to claim 4, characterized in that: The number of the second threaded blind holes is three and they are distributed in a triangle shape.

6. The lens mounting structure according to claim 4, characterized in that: The number of the second threaded blind holes is four and they are distributed in a rectangular shape.

7. The lens mounting structure according to claim 1, characterized in that: The thickness of the first flange and the second flange are both greater than the thickness of the lens.

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