Radiation resistance testing device for rubber sealing ring
By designing a modular rubber seal ring radiation resistance testing device, the problem of rubber seal ring performance degradation under radiation was solved, achieving safe, flexible, and low-cost testing adaptability, suitable for various radiation sources and seal ring sizes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-04-10
AI Technical Summary
Rubber seals degrade in performance under prolonged high-dose radiation, resulting in a shortened service life. Existing technologies lack effective testing equipment for radiation resistance performance.
Design a modular rubber sealing ring radiation resistance testing device, including a platform, main frame, radiation source placement point, circular track and radiation source placement channel. It adopts a telescopic track, electric push rod and linear motor, and is equipped with a shielding cover and PLC control system to adapt to sealing rings of different sizes and radiation sources, thereby reducing the radiation impact.
It enables a widely applicable, safe and reliable radiation resistance test for rubber seals, reduces maintenance costs, is applicable to different types of radiation sources, and reduces the impact of radiation on personnel and the environment.
Smart Images
Figure CN121830447A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of radioactive material transport equipment, in particular to a radiation resistance performance test device for rubber sealing ring. BACKGROUND
[0002] In order to ensure the safety of radioactive material transport activities, the regulatory authorities and IAEA have put forward requirements for the containment performance of radioactive material transport containers.
[0003] The containment performance of the radioactive material transport container is a very key safety performance index of the container itself, which can ensure that the radioactive nuclides contained in the transport container cannot be leaked to the environment in large quantities under various transport conditions (normal transport conditions, normal transport conditions, transport accident conditions), so as to ensure the safety of workers and the public.
[0004] After the radioactive material transport container is loaded with contents, the containment boundary often needs to work in a radiation environment, and the containment boundary usually uses a sealing ring to ensure its sealing performance. Common sealing rings are rubber sealing rings and metal sealing rings. Among them, the performance of the rubber sealing ring may decrease under the working conditions of long time and high radiation dose rate, so it is usually directly scrapped and replaced after a specified number of uses. SUMMARY
[0005] In view of the shortcomings of the prior art, the present application provides a radiation resistance performance test device for rubber sealing ring, which only partially solves the problems existing in the prior art.
[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a radiation resistance performance test device for rubber sealing ring is provided, which comprises: a table plate and a main frame, the table plate is arranged on the main frame; a radioactive source placement point, a circular track and a radioactive source placement channel are arranged on the table plate; wherein, The circular track comprises a radius adjusting mechanism, the radius adjusting mechanism comprises a telescopic track and a plurality of electric push rods and linear motors symmetrically arranged with the circular point of the circular track as the starting point, the linear motor drives the electric push rod to move; the telescopic track comprises an inner track and an outer track, the inner track is telescopically arranged in the groove of the outer track, a clamping hole is arranged on the outer track, and correspondingly, a clamping point is arranged on the inner track, the clamping point can be clamped in the clamping hole; the top of the electric push rod abuts against the inner wall of the circular track; The radioactive source placement point is arranged at the center point position of the table plate, and the radioactive source placement point is at the original point position of the circular track; The radioactive source placement channel is internally connected to the radioactive source placement point, and the radioactive source is pushed into the radioactive source placement point position through the radioactive source placement channel; the radioactive source placement channel is externally connected to the radioactive source storage device.
[0007] As a preferred technical scheme, the radiation level mark sticker is arranged on one or more electric push rods, and the content information of the radiation level mark sticker includes position information from an origin, radiation source type information, radioactivity information, and radiation level information at the corresponding position.
[0008] As a preferred technical scheme, the radiation source type information includes three types, including Cs-137, Co-60, and I-192.
[0009] As a preferred technical scheme, a plurality of linear motors are fixed to the table plate, and the linear motors are connected to the electric push rods; the plurality of linear motors are distributed around the origin of the circular track, and the end portions of the plurality of linear motors enclose a circle.
[0010] As a preferred technical scheme, a first circular ring-shaped support is further arranged at the center position of the table plate, and the first circular ring-shaped support is used to support and fix the plurality of linear motors; the first circular ring-shaped support extends outwardly, is connected to a second circular ring-shaped support, and the second circular ring-shaped support is used to support the circular track; the circle, the first circular ring-shaped support, and the second circular ring-shaped support are concentric circles.
[0011] As a preferred technical scheme, the center of the first circular ring-shaped support is used as a radiation source placement point and is connected to a radiation source placement channel.
[0012] As a preferred technical scheme, the radiation source storage device is provided with a push-out door and a push-in door, the push-in door corresponds to the position of the push-out door; the device further includes a push rod, the push rod can enter the push-in door, push the radiation source placed in the radiation source storage device out of the push-out door, pass through the push-out door, enter the radiation source placement channel, and reach the radiation source placement point; the push rod can pass through the push-in door and the push-out door in reverse.
[0013] As a preferred technical scheme, the device further includes a shielding cover, the shielding cover is provided with an extension portion that extends outwardly to the push-out door, the radiation source placement channel extends outwardly, and is connected to the push-out door of the radiation source storage device.
[0014] As a preferred technical scheme, the shielding cover is made of lead glass material, and the shielding cover is a detachable or movable structure.
[0015] As a preferred technical scheme, the device further includes a PLC control system, which is used to control the movement of the linear motors to drive the electric push rods, and further adjust the radius of the circular track to meet the fixation of rubber sealing rings of different radii.
[0016] Compared with the prior art, the technical scheme of the present application has the following beneficial effects: (1) The modular design is adopted, the application range is wide, and the device is suitable for different types of radiation sources and is convenient for test development. (2) The shielding cover is designed by itself, and can be used with mobile radiation sources such as mobile flaw detectors, so that the flexibility is high, the influence on personnel and environment is small, and the test can be carried out in a non-radiation working place; (3) The device structure is adjustable, and is suitable for different size specifications, so that the application range is wide; (4) The application mainly relates to a mechanical structure, and is safe, reliable, convenient to use, complete in function and low in maintenance cost. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 A structure top view schematic diagram of a radiation resistance performance test device for a rubber sealing ring is provided in the application; Figure 2 A structure side view schematic diagram of a radiation resistance performance test device for a rubber sealing ring is provided in the application; Figure 3 A structure schematic diagram of a circular track is provided in the application; Figure 4 A structure schematic diagram of a push rod is provided in the application; Figure 5 A schematic diagram of a radiation level mark sticker is provided in the application.
[0018] The drawings are as follows: a table plate 1, a main body frame 2, a radioactive source placement point 3, a circular track 4, an inner track 41, a clamping point 411, an outer track 42, a clamping hole 421, a linear motor 5, an electric push rod 6, a first circular ring support 7, a second circular ring support 8, an opening 81, a radioactive source storage device 9, a push-out door 91, a push-in door 92, a radioactive source putting channel 10, a shielding cover 11, an extension part 111, a radioactive source 12, a push rod 13, a control panel 14 and a radiation level mark sticker 15. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.
[0020] Please refer to Figures 1-5 The application provides a radiation resistance performance test device for a rubber sealing ring, which comprises a table plate 1 and a main body frame 2, the table plate 1 is arranged on the main body frame 2, and the table plate 1 is provided with a radioactive source placement point 3, a circular track 4 and a radioactive source putting channel 10. For example Figure 1As shown, the circular track 4 includes a radius adjustment mechanism, which includes a telescopic track and multiple electric push rods 6 symmetrically arranged with the circular point of the circular track 4 as the starting point, and a linear motor 5. The linear motor 5 drives the electric push rods 6 to move.
[0021] like Figure 3 As shown, the telescopic track includes an inner track 41 and an outer track 42. The inner track 41 is telescopically mounted in a groove in the outer track 42. The outer track 42 has a locking hole 421, and correspondingly, the inner track 41 has a locking point 411, which can engage with the locking hole 421. The top of the electric push rod 6 abuts against the inner wall of the circular track 4. To ensure even force distribution, eight small linear motors 5 can be used to drive eight electric push rods 6, distributed as shown in the diagram. Figure 1 As shown. The inner track 41 and the outer track 42 are made of elastic material, which is easy to deform with the expansion and contraction of the track.
[0022] The radiation source placement point 3 is located at the center of the platform 1, which is the origin of the circular track 4.
[0023] The radioactive source placement channel 10 is internally connected to the radioactive source placement point 3. The radioactive source 12 is pushed into the position of the radioactive source placement point 3 through the radioactive source placement channel 10. The radioactive source placement channel 10 is externally connected to the radioactive source storage device 9.
[0024] Preferred, such as Figure 5 As shown, one or more electric actuators 6 are equipped with radiation level markers 15. The information on the radiation level markers 15 includes: position information from the origin, radiation source type information, radioactivity information, and radiation level information at the corresponding position. For example: "30cm position - radionuclide 60Co - radioactivity 100Ci - radiation level at the corresponding position is 100Gy / h".
[0025] Preferably, the 12 types of radioactive sources include three of the more common ones: Cs-137, Co-60, and I-192.
[0026] Preferably, multiple linear motors 5 are fixed to the platform 1, and the linear motors 5 are connected to electric push rods 6; the multiple linear motors 5 are distributed around the origin of the circular track 4, and the ends of the multiple linear motors 5 form a circle.
[0027] Preferred, such as Figure 1As shown, a first annular support 7 is also provided at the center of the platform 1. The first annular support 7 is used to support and fix multiple linear motors 5. The first annular support 7 extends outward and connects to a second annular support 8, which is used to support the circular track 4. The circle, the first annular support 7, and the second annular support 8 are concentric circles. The minimum diameter and the maximum diameter of the second annular support 8 can accommodate the circular track 4 after it is contracted and extended. The second annular support 8 is designed as a groove, and an opening 81 is provided in the circle that connects to the first annular support 7 for the electric push rod 6 to pass through.
[0028] Preferably, the center of the first annular support 7 is used as the radiation source placement point 3, which connects to the radiation source insertion channel 10. Placing the radiation source 12 at the center ensures uniform radiation from the rubber sealing ring, resulting in more accurate experimental data.
[0029] Preferably, the radioactive source storage device 9 is provided with an ejection door 91 and an insertion door 92, with the insertion door 92 corresponding to the position of the ejection door 91; it also includes a push rod 13, which can enter the insertion door 92 to push the radioactive source 12 into the radioactive source storage device 9, and push the radioactive source 12, which has been pre-placed in the radioactive source storage device 9, out to the ejection door 91, through the ejection door 91, into the radioactive source placement channel 10, until it is pushed to the position of the radioactive source placement point 3; the push rod 13 can be pushed backward through the ejection door 91 and the insertion door 92.
[0030] Combined with appendix Figure 2 In conjunction with the above description, it can be concluded that, due to the setting of the annular support, the electric push rod 6 and the radiation source placement channel 10 are located on different levels.
[0031] Preferred, such as Figure 2 As shown, it also includes a shielding cover 11, which has an extension 111 that extends outward to the push-out door 91. The radiation source insertion channel 10 extends outward and is connected to the push-out door 91 of the radiation source storage device 9.
[0032] Preferably, the shield 11 is made of lead glass material, and the shield 11 is a detachable or movable structure.
[0033] Preferably, the device also includes a PLC control system for controlling the linear motor 5 to drive the electric push rod 6, thereby adjusting the radius of the circular track 4 to accommodate rubber sealing rings of different radii. The advancing distance of the linear motor 5 is set in the control panel 14 according to the different radii of the rubber sealing rings to be measured. The control panel 14 is shown in the figure as being mounted on the main frame. Preferably, the control panel 14 can also be connected to the outside of the device, minimizing the risk of radiation exposure to the operator throughout the process.
[0034] Example The rubber sealing ring radiation resistance performance test is carried out by using the above test device, including the following steps: Step 1, adjust the circular track 4 to the minimum radius, place it in the second circular support 8, and pre-place the rubber sealing ring on the periphery of the circular track 4.
[0035] Step 2, measure the radius of the rubber sealing ring, input the radius in the control panel 14, calculate the push-out distance of the linear motor 5, start the linear motor 5, and the 8 linear motors 5 move synchronously. After the electric push rod 6 abuts against the circular track 4, it drives the inner track 41 to move relative to the outer track 42 until the linear motor 5 stops moving. The clamping point 411 of the inner track 41 is clamped into the clamping hole 421 of the outer track 42, and the rubber sealing ring is relatively stationary with the circular track 4.
[0036] Step 3, cover the shielding cover 11, and push the radioactive source 12 from the radioactive source storage device 9 into the radioactive source placement point 3.
[0037] Step 4, calculate the radiation resistance performance of the rubber sealing ring.
[0038] The calculation method uses the air specific energy release rate formula to calculate the radiation resistance performance of the rubber sealing ring: (1) : air specific energy release rate, Gy / s; : activity of radioactive source 12, Bq; : specific energy release rate constant; : distance between point source and calculation point, m.
[0039] The calculated air specific energy release rate is in units of Gy / s, which can be converted to Gy / h.
[0040] The above information is obtained by reading the content information on the radiation level label 15.
[0041] It should be clear to those skilled in the art that the main purpose of the present application is to provide a test device, and the related values in the calculation formula are all determined values. The calculation method in this patent is used to reference the radiation level (dose rate) at a specified position to determine the test conditions of the irradiation test. The main purpose is to design a device that can be used for irradiation test. The device has labels calculated by the formula, which can be used to confirm that the radiation level of the test object is known when the test is performed at different labels.
[0042] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.
Claims
1. A device for testing the radiation resistance of a rubber seal ring, characterized by The utility model relates to a kind of radioactive source storage device, including: Platform and main body frame, the platform is set on the main body frame;The platform is equipped with radioactive source placement point, circular track and radioactive source put into passageway;Wherein, The circular track includes radius adjusting mechanism, the radius adjusting mechanism includes telescopic track and multiple electric push rods and linear motor symmetrically arranged with the circular point of the circular track as starting point, the linear motor drives the electric push rod to move;The telescopic track includes inner track and outer track, the inner track is telescopic and is arranged in the recess of outer track, the outer track is equipped with clamping hole, and correspondingly, the inner track is equipped with clamping point, and the clamping point can be clamped in the clamping hole;The top of the electric push rod abuts the inner wall of the circular track; The radioactive source placement point is arranged at the center point position of the platform, and the radioactive source placement point is the original point position of the circular track; The radioactive source put into passageway is internally connected to the radioactive source placement point, and the radioactive source is pushed into the radioactive source placement point position through the radioactive source put into passageway;The radioactive source put into passageway is externally connected to radioactive source storage device.
2. The device for testing the radiation resistance of a rubber seal ring according to claim 1, wherein Wherein, One or more of the electric push rod is equipped with radiation level mark, and the content information on the radiation level mark includes: position information from the original point, radioactive source type information, radioactivity information and radiation level information at the corresponding position.
3. The device for testing the radiation resistance of a rubber seal ring according to claim 2, wherein The radioactive source type information includes three kinds, including Cs-137, Co-60 and I-192.
4. The device for testing the radiation resistance of a rubber seal ring according to claim 1, wherein Multiple linear motors are fixed to the platform, and the linear motor is connected to the electric push rod;Multiple linear motors are distributed around the original point of the circular track, and the end of multiple linear motors is enclosed to form a circle.
5. The device for testing the radiation resistance of a rubber seal ring according to claim 4, wherein The center position of the platform is also provided with a first circular ring support, and the first circular ring support is used for supporting and fixing multiple linear motors;The first circular ring support extends outwardly, connects a second circular ring support, and the second circular ring support is used for supporting the circular track. The circle, the first circular ring support and the second circular ring support are concentric circles.
6. The device for testing the radiation resistance of a rubber seal ring according to claim 5, wherein The center of the first circular ring support is used as the radioactive source placement point, and is connected to the radioactive source put into passageway.
7. The device for testing the radiation resistance of a rubber seal ring according to claim 1, wherein The radioactive source storage device is provided with a push-out door and a push-in door, and the push-in door corresponds to the position of the push-out door;It also includes a push rod, the push rod can enter the push-in door, push the radioactive source placed in the radioactive source storage device out of the push-out door, pass through the push-out door, enter the radioactive source put into passageway, and push to the radioactive source placement point position;The push rod can pass through the push-out door and the push-in door in reverse.
8. The device for testing the radiation resistance of a rubber seal ring according to claim 7, wherein It also includes a shielding cover, the shielding cover is provided with an extension part, which extends outwardly to the push-out door, and the radioactive source put into passageway extends outwardly and connects to the push-out door of the radioactive source storage device.
9. The device for testing the radiation resistance of a rubber seal ring according to claim 8, wherein The shielding cover is made of lead glass material, and the shielding cover is a detachable or movable structure.
10. The device for testing the radiation resistance of a rubber seal ring according to any one of claims 1 to 9, characterized in that, Also include PLC control system, for controlling the linear motor drive the electric push rod movement, in turn adjust the radius size of the circular track adjustment, meet the different radius of the rubber sealing ring fixed.