Radiation-proof tubular material shielding structure

Abstract

The invention provides an anti-radiation tubular material shielding structure, and belongs to the technical field of optical fiber control, and the structure comprises a skeleton assembly which comprises a plurality of skeleton parts which are arranged at intervals and a traction part which is disposed on the plurality of skeleton parts in a penetrating manner, the traction part is used for driving at least one skeleton part to move, and the plurality of skeleton parts are provided with accommodation areas for arranging optical fibers in a reserved manner; the skeleton assembly is sleeved with the tube body, and the tube body can be bent along with the skeleton assembly; the shielding assembly comprises a plurality of shielding units arranged on the tube body at intervals, the positions of the shielding units correspond to the positions of the skeleton parts one to one, the shielding units are arranged to be cylindrical, the length of the cylindrical shielding units is larger than or equal to the distance between the two adjacent skeleton parts, and gaps are formed between the shielding units and the tube body; and the shielding unit is made of an anti-radiation material. According to the radiation-proof tubular material shielding structure provided by the invention, effective radiation shielding can be realized while multi-degree-of-freedom controllable rotation of the optical fiber can be retained.

Description

Technical Field

[0001] The present application relates to the field of optical fiber control technology, and in particular to a radiation-resistant tubular material shielding structure. Background Art

[0002] Optical materials are susceptible to radiation damage in a radiation environment. Radiation induces "color center" defects in materials, which causes coloring of optical materials (glass, optical fiber), deterioration of optical performance, and affects the quality of collected images. Optical materials are mainly affected by ionization damage and displacement damage in a radiation environment. The mechanism of ionization damage is that electromagnetic waves or charged particles excite electrons outside the nucleus to the conduction band to form electron-hole pairs. Displacement damage is that irradiated particles enter the interior of the optical material and collide with the atomic nuclei of the material, causing the nucleus to shift. The influence of the two types of damage will cause "paramagnetic defects" or "Frankel defects" to form inside the material. The process of defect formation is also the process of chemical bond breaking and rearrangement. Different defects will absorb different light bands, resulting in changes in optical transmittance and refractive index, affecting the monitoring quality. Summary of the invention

[0003] The present application aims to provide a radiation-resistant tubular material shielding structure, aiming to achieve effective radiation shielding while retaining the multi-degree-of-freedom controllable rotation of the optical fiber itself.

[0004] The embodiment of the present application provides a radiation-resistant tubular material shielding structure, comprising: A skeleton assembly, comprising a plurality of skeleton parts arranged at intervals and a traction part penetrating through the plurality of skeleton parts, the traction part being used to drive at least one of the skeleton parts to move, and a receiving area for arranging optical fibers being reserved on the plurality of skeleton parts; A tube body, which is sleeved on the bone component and can bend along with the bone component; A shielding assembly is arranged 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 to the positions of the skeleton parts, the length of the shielding unit is greater than or equal to the distance between two adjacent skeleton parts, and there is a gap between the shielding unit and the tube body; the shielding unit is made of anti-radiation material.

[0005] Optionally, the shielding unit comprises a fixing portion and a shielding portion, the fixing portion is detachably connected to the tube body, one end of the shielding portion is connected to the fixing portion, and the other end extends in a direction away from the fixing portion; Wherein, the sum of the length of the fixing portion and the length of the shielding portion is greater than or equal to the distance between two adjacent skeleton portions.

[0006] Optionally, the diameter of the shielding portion gradually increases from an end close to the fixing portion toward an end away from the fixing portion.

[0007] Optionally, the shielding portion of the shielding unit surrounds a fixing portion of a shielding unit adjacent to the shielding unit.

[0008] Optionally, the fixing portion is connected to the tube body via a glue material.

[0009] 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; The fixing part is connected to the tube body through a fixing belt sleeved on the outer circumference.

[0010] Optionally, the maximum rotation angle between the shielding units is 20°.

[0011] Optionally, the control structure further includes a shielding front cover arranged at one end of the tube body, and the shielding front cover is fixedly connected to the shielding unit close to the end of the tube body.

[0012] Optionally, the tube body is configured as a stainless steel corrugated tube.

[0013] Optionally, the material of the shielding unit includes lead or tungsten.

[0014] Beneficial effects: The present application provides a radiation-resistant tubular material shielding structure, which includes a skeleton component, a tube body and a shielding component, wherein the skeleton component includes a plurality of skeleton parts arranged at intervals and a traction part for pulling the skeleton parts to displace, the tube body is sleeved on the skeleton component, and the tube body can bend following the skeleton component, the shielding component is arranged on the tube body, the shielding component includes a plurality of shielding units, the shielding units are cylindrical, and the length of the shielding units is greater than or equal to the distance between two adjacent skeleton parts; in this way, the optical fiber is fixed on the skeleton part, and the traction part is used to drive the skeleton part to displace so that the optical fiber can rotate, and the shielding component can shield external radiation to protect the optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 It is a schematic diagram of the working principle of the image transmission optical fiber in the related technology; Figure 2is a schematic diagram of a radiation-resistant tubular material shielding structure proposed in one embodiment of the present application; Figure 3 It is a structural schematic diagram of two adjacent shielding units in a radiation-resistant tubular material shielding structure proposed in one embodiment of the present application; Figure 4 It is a structural schematic diagram of a shielding unit including a first subunit and a second subunit in a radiation-resistant tubular material shielding structure proposed in an embodiment of the present application; Figure 5 It is a schematic diagram of a radiation-resistant tubular material shielding structure including a shielding front cover proposed in one embodiment of the present application.

[0017] Explanation of the reference numerals: 10, skeleton component; 11, skeleton part; 12, traction part; 20, tube body; 30, shielding unit; 31, fixing part; 32, shielding part; 40, shielding front cover; 50, accommodating area; 60, fixing belt. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] In the related art, refer to Figure 1 As shown, when it is necessary to observe objects in the radiation area, optical fiber can be used to transmit the image, so that part of the optical fiber will enter the radiation area, but the radiation in the radiation area will damage the optical fiber material and affect the quality of image transmission.

[0020] In view of this, the present 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.

[0021] Reference Figure 2 As shown, a radiation-resistant tubular material shielding structure disclosed in an embodiment of the present application is shown. The control structure includes a skeletal component 10, a tubular body 20 and a shielding component.

[0022] Specifically, the skeleton component 10 includes a plurality of skeleton parts 11 arranged at intervals and a traction part 12 passing through the plurality of skeleton parts 11. The plurality of skeleton parts 11 are arranged along the length direction of the optical fiber, and the distance between any two adjacent skeleton parts 11 is equal. A plurality of traction holes are provided on each skeleton part 11, and the positions of the traction holes on each skeleton part 11 are one-to-one corresponding, that is, the corresponding traction holes on each skeleton part 11 are in a straight line. At the same time, a receiving area 50 for arranging the optical fiber is reserved on the skeleton part 11. In the embodiment of the present application, 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. When fixing the optical fiber, it is only necessary to pass the optical fiber through the plurality of skeleton parts 11. The skeleton part 11 can be made of radiation-resistant materials such as stainless steel or lead.

[0023] The traction part 12 is used to drive at least one skeleton part 11 to displace. Specifically, the traction part 12 includes a plurality of traction lines, each of which is respectively inserted into a plurality of skeleton parts 11 through a traction hole on each skeleton part 11. In the embodiment of the present application, a total of four groups of traction ropes are provided, and from the plane view of the skeleton part 11, the traction ropes are respectively located at the upper, lower, left and right positions of the skeleton part 11. It can be understood that the skeleton part 11 located at the front end is in a fixed connection relationship with the traction rope. In this way, when any one of the traction ropes is pulled, the skeleton part 11 located at the front end will be displaced in the corresponding direction under the traction force of the traction rope, and the greater the displacement of the traction rope, the more the number of skeleton parts 11 located therein will be, and the greater the bending degree of the optical fiber itself will be. Generally, an objective lens is provided at the front end of the optical fiber, and the objective lens can be used to collect image information, and the objective lens can collect image information at different positions by bending the optical fiber. In the embodiment of the present application, the material of the traction rope can be selected from stainless steel.

[0024] Reference Figure 2 As shown, the tube body 20 is sleeved on the skeletal component 10, and the tube body 20 can protect the skeletal component 10 to prevent splashes that may exist in the environment from damaging the skeletal component 10 or the optical fiber. It is understandable that the tube body 20 needs to be made of a material with a certain flexibility so that the tube body 20 can bend with the skeletal component 10. In addition, since the shielding component needs to be set on the tube body 20, the tube body 20 also needs to meet a certain rigidity. In the embodiment of the present application, the tube body 20 can be made of a stainless steel corrugated tube; in other embodiments, the tube body 20 can also be made of a stainless steel braided tube.

[0025] Reference Figure 2As shown, the shielding assembly includes a plurality of shielding units 30 arranged at intervals on the tube body 20, the number of the shielding units 30 is equal to the number of the skeleton parts 11, and the positions of the shielding units 30 correspond to the positions of the skeleton parts 11. At the same time, in the embodiment of the present application, the shielding unit 30 surrounds the tube body 20, and the length of the shielding unit 30 is greater than or equal to the distance between two adjacent skeleton parts 11, and there is a gap between the shielding unit 30 and the tube body 20. The length of the shielding unit 30 can be understood as the size of the shielding unit 30 in the length direction of the tube body 20, and the distance between two adjacent skeleton parts 11 refers to the distance between the skeleton parts 11 when no displacement occurs. And the shielding unit 30 is made of radiation-resistant material, such as lead or tungsten. In this way, since the length of the shielding unit 30 is greater than or equal to the distance between the skeleton parts 11, multiple shielding units 30 can surround the entire skeleton assembly 10, thereby shielding radiation and protecting the internal optical fiber. Furthermore, since there is a gap between the shielding unit 30 and the tube body 20 , the shielding unit 30 will not affect the bending of the skeleton component 10 and the tube body 20 .

[0026] Through the above-mentioned radiation-resistant tubular material shielding structure provided in the embodiment of the present application, the rotation of the end and the bending of the optical fiber can be realized by using the skeleton component 10. By designing the radiation shielding component, while ensuring the mobility, it also provides radiation shielding protection for the connection end of the tubular radiation-sensitive material and other structures. Therefore, based on material selection and structural design, not only can the radiation resistance be improved, but also the controllability of the end can be achieved.

[0027] Reference Figure 2 As shown, in an optional embodiment, the embodiment of the present application further provides a radiation-resistant tubular material shielding structure, in which the shielding unit 30 includes a fixing portion 31 and a shielding portion 32 .

[0028] Specifically, in the embodiment of the present application, the position of the fixing portion 31 is the same as the position of the corresponding skeleton portion 11 , and the length of the fixing portion 31 is equal to the length of the skeleton portion 11 , so that the fixing portion 31 can partially surround the skeleton portion 11 .

[0029] The shielding part 32 is tubular as a whole, and one end of the shielding part 32 is connected to the fixing part 31 , and the other end extends in a direction away from the fixing part 31 , so that the shielding part 32 becomes a structure surrounding the position between the skeleton parts 11 in the shielding unit 30 .

[0030] It is understandable that the sum of the length of the fixing portion 31 and the length of the shielding portion 32 is greater than or equal to the distance between two adjacent skeleton portions 11. Since the length of the fixing portion 31 is equal to the length of the skeleton portion 11, the shielding portion 32 needs to be greater than or equal to the distance between two adjacent skeleton portions 11.

[0031] Reference Figure 2 As shown, in one embodiment, the length of the fixing portion 31 may be greater than or less than the length of the skeleton portion 11, as long as the length of the final shielding unit 30 is greater than or equal to the distance between two adjacent skeleton portions 11. Exemplarily, if the length of the fixing portion 31 is less than the length of the skeleton portion 11, the length of the shielding portion 32 needs to be greater than the distance between two adjacent skeleton portions 11, so that the sum of the lengths of the two can be at least equal to the distance between two adjacent skeleton portions 11.

[0032] Reference Figure 2 and Figure 3 As shown, in one embodiment, in order to minimize the influence on the bending of the tube body 20 and the skeletal component 10, the shielding portion 32 is designed to be truncated cone-shaped, that is, the diameter of the shielding portion 32 gradually increases from the end close to the fixing portion 31 to the end away from the fixing portion 31. Among them, the diameter of the end of the shielding portion 32 connected to the fixing portion 31 is equal to the diameter of the fixing portion 31, and the diameter of the other end of the shielding portion 32 is much larger than the diameter of the fixing portion 31. In this embodiment, the maximum rotation angle of the shielding unit 30 is 20°, at which angle, the interference between two adjacent shielding units 30 can be well reduced. It can be understood that those skilled in the art can adjust the diameter of the shielding portion 32 according to actual needs, thereby adjusting the maximum rotation angle of the shielding unit 30.

[0033] At the same time, since the shielding portion 32 is configured to be truncated into a cone shape, when the tube body 20 and the skeletal component 10 are bent, if the length of the shielding portion 32 is not enough, part of the tube body 20 will be exposed to the radiation environment when bending. In order to reduce this situation, in an embodiment of the present application, the shielding portion 32 of the shielding unit 30 will surround the fixed portion 31 of the shielding unit 30 adjacent to the shielding unit 30, that is, the length of the shielding portion 32 is the distance between two adjacent skeletal portions 11 plus the sum of the lengths of a single skeletal portion 11, so that the exposure of the tube body 20 when bending can be reduced, thereby better shielding radiation.

[0034] Furthermore, the fixing portion 31 may be detachably connected to the tube body 20 .

[0035] For example, in one embodiment, the fixing portion 31 can be connected to the tube body 20 by adhesive. That is, the fixing portion 31 is connected to the tube body 20 by gluing, and when disassembly is required, only the adhesive needs to be removed, and the shielding unit 30 can be directly disassembled.

[0036] For example, refer to Figure 4As shown, in one embodiment, the shielding unit 30 includes a first subunit and a second subunit, and the shielding unit 30 is formed by splicing the first subunit and the second subunit, and the fixing portion 31 is connected to the tube body 20 through a fixing belt 60 sleeved on the outer periphery. When the shielding unit 30 is connected to the tube body 20, the first subunit and the second subunit are first assembled to form a fixing portion 31 in contact with the tube body 20, and then the fixing belt 60 is sleeved on the outer periphery of the fixing portion 31 and tightened to achieve a fixed connection between the shielding unit 30 and the tube body 20. When disassembly is required, the fixing belt 60 is released, and then the shielding unit 30 is separated, and the shielding unit 30 is separated from the tube body 20. The material of the fixing belt 60 can be stainless steel.

[0037] By making the fixing portion 31 detachably connected to the tube body 20 , the installation and removal of the shielding unit 30 are more convenient, thereby improving the convenience when replacing and repairing the shielding unit 30 .

[0038] Reference Figure 5 As shown, in an optional embodiment, the embodiment of the present application further provides a radiation-resistant tubular material shielding structure, and the control structure also includes a shielding front cover 40.

[0039] Specifically, the shielding front cover 40 is arranged at one end of the tube body 20, which is also the end where the objective lens is located. The shielding front cover 40 closes the gap between the shielding unit 30 near the end of the tube body 20 and the skeleton component 10, 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 through the fixing screws on the top and closes the tube body 20. The shielding front cover 40 is connected to the shielding unit 30 through the fixing screws on the side. The shielding front cover 40 is also made of radiation-resistant material, so that the shielding front cover 40 can be used to shield the exposed part of the end of the tube body 20, so as to better block radiation and protect the optical fiber. At the same time, a through hole for the optical fiber to pass through is also reserved on the shielding front cover 40.

[0040] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0041] It should also be noted that, in this article, the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, 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 that there is any such actual relationship or order between these entities or operations, nor can they be understood as indicating or implying relative importance. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. Without more restrictions, an element defined by the phrase "comprising a ..." does not exclude the existence of other identical elements in the process, method, article or terminal device comprising the element.

[0042] The technical solution provided by the present application is described in detail above. The principle and implementation method of the present application are described in this article using specific examples. The description of the above embodiments is only used to help understand the present application, and the content of this specification should not be understood as limiting the present application. At the same time, for those of ordinary skill in the art, according to the present application, there will be different forms of changes in the specific implementation methods and application scopes. It is not necessary and impossible to list all the implementation methods here, and the obvious changes or modifications derived therefrom are still within the scope of protection of the present application.

Claims

1. A radiation-resistant tubular material shielding structure, characterized in that: include: A skeleton assembly, comprising a plurality of skeleton parts arranged at intervals and a traction part penetrating through the plurality of skeleton parts, the traction part being used to drive at least one of the skeleton parts to move, and a receiving area for arranging optical fibers being reserved on the plurality of skeleton parts; A tube body, which is sleeved on the bone component and can bend along with the bone component; A shielding assembly is arranged 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 to the positions of the skeleton parts, the length of the shielding unit is greater than or equal to the distance between two adjacent skeleton parts, and there is a gap between the shielding unit and the tube body; the shielding unit is made of anti-radiation material.

2. The radiation-resistant tubular material shielding structure according to claim 1, characterized in that: The shielding unit comprises a fixing portion and a shielding portion, wherein the fixing portion is detachably connected to the tube body, one end of the shielding portion is connected to the fixing portion, and the other end extends in a direction away from the fixing portion; Wherein, the sum of the length of the fixing portion and the length of the shielding portion is greater than or equal to the distance between two adjacent skeleton portions.

3. The radiation-resistant tubular material shielding structure according to claim 2, characterized in that: The diameter of the shielding portion gradually increases from an end close to the fixing portion toward an end far away from the fixing portion.

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

5. The radiation-resistant tubular material shielding structure according to claim 2, characterized in that: The fixing part is connected to the tube body through a glue material.

6. The radiation-resistant tubular material shielding structure according to claim 2, characterized in that: The shielding unit comprises 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 through a fixing belt sleeved on the outer circumference.

7. The radiation-resistant tubular material shielding structure according to claim 2, characterized in that: The maximum rotation angle between the shielding units is 20°.

8. The radiation-resistant tubular material shielding structure according to any one of claims 1 to 7, characterized in that: The control structure further comprises a shielding front cover arranged at one end of the tube body, and the shielding front cover is fixedly connected to the shielding unit close to the end of the tube body.

9. The radiation-resistant tubular material shielding structure according to any one of claims 1 to 7, characterized in that: The tube body is configured as a stainless steel corrugated tube.

10. The radiation-resistant tubular material shielding structure according to any one of claims 1 to 7, characterized in that: The material of the shielding unit includes lead or tungsten.

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