A radiation-resistant tubular material shielding structure

Abstract

This application provides a radiation-resistant tubular material shielding structure, belonging to the field of fiber optic control technology. It includes: a skeleton assembly comprising multiple spaced-apart skeletons and a traction part passing through the skeletons, the traction part being used to move at least one skeleton, and the skeletons having pre-reserved areas for accommodating optical fibers; a tube body fitted onto the skeleton assembly, and capable of bending with the skeleton assembly; a shielding assembly comprising multiple spaced-apart shielding units on the tube body, the positions of the shielding units corresponding one-to-one with the positions of the skeletons, the shielding units being cylindrical, and the length of the cylindrical shielding unit being greater than or equal to the distance between two adjacent skeletons, with a gap between the shielding unit and the tube body; the shielding units are made of radiation-resistant material. This radiation-resistant tubular material shielding structure provides an effective radiation shielding effect while preserving the multi-degree-of-freedom controllable rotation of the optical fiber itself.

Description

Technical Field

[0001] This application relates to the field of fiber optic control technology, and more specifically, to a radiation-resistant tubular material shielding structure. Background Technology

[0002] Optical materials are susceptible to radiation damage in radiation environments. Radiation induces "color centers" in these materials, causing discoloration and degrading their optical performance, thus affecting the quality of acquired images. Optical materials are primarily affected by ionization damage and displacement damage in radiation environments. Ionization damage occurs when electromagnetic waves or charged particles excite electrons outside the atomic nucleus to the conduction band, forming electron-hole pairs. Displacement damage occurs when irradiated particles enter the optical material and collide with the atomic nuclei, causing nucleus displacement. Both types of damage can lead to the formation of "paramagnetic defects" or "Frenkel defects" within the material. The formation of these defects involves the breaking and rearrangement of chemical bonds. Different defects absorb different wavelengths of light, resulting in changes in optical transmittance and refractive index, thus affecting monitoring quality. Summary of the Invention

[0003] This application aims to provide a radiation-resistant tubular material shielding structure that retains the multi-degree-of-freedom controllable rotation of the optical fiber itself while achieving effective radiation shielding.

[0004] This application provides a radiation-resistant tubular material shielding structure, including:

[0005] A skeletal assembly includes a plurality of skeletal parts arranged at intervals and a traction part passing through the plurality of skeletal parts. The traction part is used to drive at least one of the skeletal parts to move. The plurality of skeletal parts are provided with a receiving area for arranging optical fibers.

[0006] A tube is fitted onto the bone assembly, and the tube is able to bend along with the bone assembly;

[0007] A shielding assembly is disposed on the tube body. The shielding assembly includes a plurality of shielding units arranged at intervals on the tube body. The positions of the shielding units correspond one-to-one with the positions of the bone parts. The length of the shielding unit is greater than or equal to the distance between two adjacent bone parts, and there is a gap between the shielding unit and the tube body. The shielding unit is made of radiation-resistant material.

[0008] Optionally, the shielding unit includes a fixing part and a shielding part, the fixing part is detachably connected to the tube body, one end of the shielding part is connected to the fixing part, and the other end extends in a direction away from the fixing part;

[0009] Wherein, the sum of the length of the fixing part and the length of the shielding part is greater than or equal to the distance between two adjacent bone parts.

[0010] Optionally, the diameter of the shielding portion gradually increases from the end closer to the fixing portion toward the end farther away from the fixing portion.

[0011] Optionally, the shielding portion of the shielding unit surrounds the fixing portion of the shielding unit adjacent to the shielding unit.

[0012] Optionally, the fixing part is connected to the tube body by an adhesive material.

[0013] Optionally, the shielding unit includes a first subunit and a second subunit, and the shielding unit is formed by splicing the first subunit and the second subunit;

[0014] The fixing part is connected to the tube body by a fixing strap sleeved on the outer periphery.

[0015] Optionally, the maximum rotation angle between the shielding units is 20°.

[0016] Optionally, the control structure further includes a shielding front cover disposed at one end of the tube body, and the shielding front cover is fixedly connected to the shielding unit near the end of the tube body.

[0017] Optionally, the pipe body is configured as a stainless steel corrugated pipe.

[0018] Optionally, the material of the shielding unit includes lead or tungsten.

[0019] Beneficial effects:

[0020] This application provides a radiation-resistant tubular material shielding structure. The control structure includes a skeleton assembly, a tube body, and a shielding assembly. The skeleton assembly includes multiple spaced-apart skeleton parts and a traction part for displacing the skeleton parts. The tube body is sleeved on the skeleton assembly and can bend along with the skeleton assembly. The shielding assembly is disposed on the tube body and includes multiple shielding units. The shielding units are cylindrical, and the length of the shielding unit is greater than or equal to the distance between two adjacent skeleton parts. In this way, the optical fiber is fixed to the skeleton parts, and the displacement of the skeleton parts by the traction part can cause the optical fiber to rotate. The shielding assembly can shield external radiation and protect the optical fiber. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram illustrating the working principle of optical fiber for image transmission in related technologies;

[0023] Figure 2 This is a schematic diagram of a radiation-resistant tubular material shielding structure according to an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the structure of two adjacent shielding units in a radiation-resistant tubular material shielding structure according to an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of a shielding unit including a first subunit and a second subunit in a radiation-resistant tubular material shielding structure according to an embodiment of this application;

[0026] Figure 5 This is a schematic diagram of a radiation-resistant tubular material shielding structure including a shielding front cover, according to an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 10, skeleton assembly; 11, skeleton part; 12, traction part; 20, tube body; 30, shielding unit; 31, fixing part; 32, shielding part; 40, shielding front cover; 50, receiving area; 60, fixing strap. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In related technologies, refer to Figure 1 As shown, when it is necessary to observe objects within the radiation area, optical fiber can be used for image transmission. However, some of the optical fiber will enter the radiation area, and the radiation within the radiation area will damage the optical fiber material, affecting the quality of image transmission.

[0030] In view of this, this application provides a radiation-resistant tubular material shielding structure, which aims to achieve effective radiation shielding while retaining the multi-degree-of-freedom controllable rotation of the optical fiber itself.

[0031] Reference Figure 2 As shown in the figure, an anti-radiation tubular material shielding structure disclosed in this application embodiment is provided. The control structure includes a skeleton component 10, a tube body 20, and a shielding component.

[0032] Specifically, the skeleton assembly 10 includes a plurality of spaced-apart skeleton parts 11 and traction parts 12 passing through the plurality of skeleton parts 11. The plurality of skeleton parts 11 are arranged along the length of the optical fiber, and the distance between any two adjacent skeleton parts 11 is equal. Each skeleton part 11 has multiple traction holes, and the positions of the traction holes on each skeleton part 11 are one-to-one, that is, the corresponding traction holes on each skeleton part 11 are in a straight line. Meanwhile, a receiving area 50 for accommodating the optical fiber is reserved on the skeleton part 11. In this embodiment, the receiving area 50 is located at the center of the skeleton part 11, that is, the skeleton part 11 itself is a hollow structure, and when fixing the optical fiber, it is only necessary to pass the optical fiber through the plurality of skeleton parts 11. The skeleton parts 11 can be made of radiation-resistant materials such as stainless steel or lead.

[0033] The traction unit 12 is used to displace at least one skeletal part 11. Specifically, the traction unit 12 includes multiple traction lines, each of which passes through a traction hole on one of the skeletal parts 11. In this embodiment, four sets of traction ropes are provided, and from the plan view of the skeletal part 11, the traction ropes are located at the top, bottom, left, and right positions of the skeletal part 11. It can be understood that the skeletal part 11 at the foremost point is fixedly connected to the traction rope. Thus, when any one of the traction ropes is pulled, the skeletal part 11 at the foremost point will be displaced in the corresponding direction under the traction force of the traction rope. The greater the displacement of the traction rope, the more skeletal parts 11 are displaced, and the greater the degree of bending of the optical fiber itself. Generally, an objective lens is provided at the foremost point of the optical fiber. The objective lens can be used to collect image information, and by bending the optical fiber, the objective lens can collect image information from different positions. In this embodiment, the traction rope can be made of stainless steel.

[0034] Reference Figure 2 As shown, the tube 20 is fitted onto the skeleton assembly 10. The tube 20 protects the skeleton assembly 10 from damage caused by potential splashes in the environment. It is understood that the tube 20 needs to be made of a material with a certain degree of flexibility so that it can bend along with the skeleton assembly 10. Furthermore, since the shielding component needs to be mounted on the tube 20, the tube 20 also needs to meet certain rigidity requirements. In this embodiment, the tube 20 can be made of stainless steel corrugated tubing; in other embodiments, the tube 20 can also be made of stainless steel braided tubing.

[0035] Reference Figure 2As shown, the shielding assembly includes multiple shielding units 30 spaced apart on the tube body 20. The number of shielding units 30 is equal to the number of bone parts 11, and the positions of the shielding units 30 correspond one-to-one with the positions of the bone parts 11. In this embodiment, the shielding units 30 enclose the tube body 20, and the length of each shielding unit 30 is greater than or equal to the distance between two adjacent bone parts 11, with a gap between the shielding units 30 and the tube body 20. The length of the shielding unit 30 can be understood as its dimension along the length of the tube body 20, and the distance between two adjacent bone parts 11 refers to the spacing between them when the bone parts 11 are not displaced. Furthermore, the shielding units 30 are made of radiation-resistant materials, such as lead or tungsten. Because the length of each shielding unit 30 is greater than or equal to the distance between the bone parts 11, multiple shielding units 30 can enclose the entire bone assembly 10, thereby achieving radiation shielding and protecting the internal optical fibers. Furthermore, since there is a gap between the shielding unit 30 and the tube 20, the shielding unit 30 will not affect the bending of the bone assembly 10 and the tube 20.

[0036] The radiation-resistant tubular material shielding structure provided in this application embodiment allows for end-cap rotation and fiber bending via the skeleton component 10. By designing the radiation shielding component, both mobility and the connection between the tubular radiation-sensitive material and other structures are protected against radiation. Therefore, based on material selection and structural design, not only is radiation resistance improved, but controllability of the end-cap is also achieved.

[0037] Reference Figure 2 As shown, in an optional embodiment, this application also provides a radiation-resistant tubular material shielding structure, in which the shielding unit 30 includes a fixing part 31 and a shielding part 32.

[0038] Specifically, in the embodiments of this application, the position of the fixing part 31 is the same as the position of the corresponding bone part 11, and the length of the fixing part 31 is equal to the length of the bone part 11, so that the fixing part 31 can surround part of the bone part 11.

[0039] The shielding part 32 is tubular in shape, with one end connected to the fixing part 31 and the other end extending away from the fixing part 31, so that the shielding part 32 becomes a structure in the shielding unit 30 that surrounds the positions between the bone parts 11.

[0040] It is understandable that the sum of the length of the fixing part 31 and the length of the shielding part 32 is greater than or equal to the distance between two adjacent bone parts 11. Since the length of the fixing part 31 is equal to the length of the bone part 11, the shielding part 32 needs to be greater than or equal to the distance between two adjacent bone parts 11.

[0041] Reference Figure 2 As shown, in one embodiment, the length of the fixing part 31 can be greater than or less than the length of the bone part 11, as long as the length of the final shielding unit 30 is greater than or equal to the distance between two adjacent bone parts 11. For example, if the length of the fixing part 31 is less than the length of the bone part 11, then the length of the shielding part 32 needs to be greater than the distance between two adjacent bone parts 11, so that the sum of the two lengths is at least equal to the distance between two adjacent bone parts 11.

[0042] Reference Figure 2 and Figure 3 As shown, in one embodiment, to minimize the impact on the bending of the tube 20 and the bone assembly 10, the shielding part 32 is designed in a frustum shape, meaning the diameter of the shielding part 32 gradually increases from the end closer to the fixing part 31 to the end farther away from the fixing part 31. Specifically, the diameter of the end of the shielding part 32 connected to the fixing part 31 is equal to the diameter of the fixing part 31, while the diameter of the other end of the shielding part 32 is much larger than the diameter of the fixing part 31. In this embodiment, the maximum rotation angle of the shielding unit 30 is 20°. At this angle, interference between adjacent shielding units 30 can be effectively reduced. It is understood that those skilled in the art can adjust the diameter of the shielding part 32 according to actual needs, thereby adjusting the maximum rotation angle of the shielding unit 30.

[0043] Meanwhile, since the shielding part 32 is set in a frustum shape, if the length of the shielding part 32 is insufficient when the tube 20 and the skeleton assembly 10 are bent, part of the tube 20 will be exposed to the radiation environment when bent. In order to reduce this situation, in this embodiment, the shielding part 32 of the shielding unit 30 surrounds the fixing part 31 of the shielding unit 30 adjacent to the shielding unit 30. That is, the length of the shielding part 32 is the sum of the distance between two adjacent skeleton parts 11 and the length of a single skeleton part 11. This can reduce the situation where the tube 20 is exposed when bent, thereby better shielding radiation.

[0044] Furthermore, the fixing part 31 can be detachably connected to the tube body 20.

[0045] For example, in one embodiment, the fixing part 31 can be connected to the tube body 20 by adhesive material. That is, the fixing part 31 is connected to the tube body 20 by adhesive. When disassembly is required, simply remove the adhesive material and directly remove the shielding unit 30.

[0046] For example, refer to Figure 4As shown, in one embodiment, the shielding unit 30 includes a first subunit and a second subunit. The shielding unit 30 is assembled from the first subunit and the second subunit, and the fixing part 31 is connected to the tube body 20 via a fixing strap 60 sleeved on its outer periphery. To connect the shielding unit 30 to the tube body 20, the first subunit and the second subunit are first assembled to form the fixing part 31, which then contacts the tube body 20. The fixing strap 60 is then sleeved on the outer periphery of the fixing part 31 and tightened to achieve a fixed connection between the shielding unit 30 and the tube body 20. When disassembly is required, the fixing strap 60 is removed, and then the shielding unit 30 is separated, thus separating the shielding unit 30 from the tube body 20. The fixing strap 60 can be made of stainless steel.

[0047] By making the fixing part 31 detachably connected to the tube body 20, the installation and removal of the shielding unit 30 are made more convenient, thereby improving the convenience of replacing and repairing the shielding unit 30.

[0048] Reference Figure 5 As shown, in an optional embodiment, this application also provides a radiation-resistant tubular material shielding structure, which further includes a shielding front cover 40.

[0049] Specifically, a shielding front cover 40 is located at one end of the tube body 20, which is also the end where the objective lens is located. The shielding front cover 40 seals the gap between the shielding unit 30 and the skeleton assembly 10 near the end of the tube body 20, and the shielding front cover 40 is fixedly connected to the shielding unit 30 near the end of the tube body 20. The shielding front cover 40 is connected to the tube body 20 by a top fixing screw, thus sealing the tube body 20. The shielding front cover 40 is connected to the shielding unit 30 by a side fixing screw. The shielding front cover 40 is also made of radiation-resistant material, which allows it to shield the exposed portion at the end of the tube body 20, thereby better blocking radiation and protecting the optical fiber. Simultaneously, the shielding front cover 40 also has a through-hole for the optical fiber to pass through.

[0050] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0051] It should also be noted that, in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. In the absence of further restrictions, an element defined by the phrase "includes a..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.

[0052] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand this application, and the content of this specification should not be construed as a limitation of this application. Furthermore, for those skilled in the art, there will be different forms of changes in the specific implementation methods and application scope based on this application. It is neither necessary nor possible to exhaustively list all implementation methods here, and obvious changes or modifications derived therefrom are still within the protection scope of this application.

Claims

1. A radiation-resistant tubular material shielding structure, characterized in that, include: A skeletal assembly includes a plurality of skeletal parts arranged at intervals and a traction part passing through the plurality of skeletal parts. The traction part is used to drive at least one of the skeletal parts to move. The plurality of skeletal parts are provided with a receiving area for arranging optical fibers. A tube is fitted onto the bone assembly, and the tube is able to bend along with the bone assembly; A shielding assembly is disposed on the tube body. The shielding assembly includes a plurality of shielding units arranged at intervals on the tube body. The positions of the shielding units correspond one-to-one with the positions of the skeletal parts. The length of the shielding unit is greater than or equal to the distance between two adjacent skeletal parts. The shielding unit is made of radiation-resistant material. The shielding unit includes a fixing part and a shielding part. The fixing part is detachably connected to the tube body. One end of the shielding part is connected to the fixing part, and the other end extends away from the fixing part. Wherein, the sum of the length of the fixing part and the length of the shielding part is greater than or equal to the distance between two adjacent bone parts, and there is a gap between the shielding part of the shielding unit and the tube body.

2. The radiation-resistant tubular material shielding structure according to claim 1, characterized in that: The diameter of the shielding part gradually increases from the end closer to the fixing part to the end farther away from the fixing part.

3. The radiation-resistant tubular material shielding structure according to claim 2, characterized in that: The shielding portion of the shielding unit surrounds the fixing portion of the shielding unit adjacent to the shielding unit.

4. The radiation-resistant tubular material shielding structure according to claim 1, characterized in that: The fixing part is connected to the tube body by adhesive material.

5. The radiation-resistant tubular material shielding structure according to claim 1, characterized in that: The shielding unit includes a first subunit and a second subunit, and the shielding unit is formed by splicing the first subunit and the second subunit. The fixing part is connected to the tube body by a fixing strap sleeved on the outer periphery.

6. The radiation-resistant tubular material shielding structure according to claim 1, characterized in that: The maximum rotation angle between the shielding units is 20°.

7. The radiation-resistant tubular material shielding structure according to any one of claims 1-6, characterized in that: The shielding structure also includes a shielding front cover disposed at one end of the tube body, the shielding front cover being fixedly connected to the shielding unit near the end of the tube body.

8. The radiation-resistant tubular material shielding structure according to any one of claims 1-6, characterized in that: The pipe body is made of stainless steel corrugated pipe.

9. The radiation-resistant tubular material shielding structure according to any one of claims 1-6, characterized in that: The material of the shielding unit includes lead or tungsten.

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