Cable anti-radiation performance testing device for nuclear power station
By using a cobalt source irradiation chamber and cable base to conduct long-term radiation tests on cables in a nuclear power plant cable radiation resistance performance testing device, the problem of cable radiation resistance performance testing was solved, ensuring the safety of nuclear power plants and reducing cable costs.
Patent Information
- Application Number
- CN202422903004.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing technologies cannot effectively test the radiation resistance of cables, which makes it impossible to guarantee the reliability and safety of nuclear power plants and increases the cost of cable manufacturing.
A radiation resistance test device for cables used in nuclear power plants was designed, including an irradiation chamber, a lifting source box, and a cable base. The cable is subjected to a continuous long-term radiation test through the cobalt source irradiation chamber to simulate nuclear radiation and high temperature and high pressure environmental conditions.
This enabled the testing of the cable's resistance to radiation, ensuring the reliability and safety of the nuclear power plant while reducing the cable's manufacturing cost.
Smart Images
Figure CN223692220U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a cable anti-radiation performance testing device. BACKGROUND
[0002] It is known in the cable production field that, in order to ensure the reliability and safety of nuclear power stations and other nuclear application sites,
[0003] the cables used in these sites must be able to withstand nuclear radiation and extreme environmental conditions such as high temperature and high pressure. Therefore, the cables used in nuclear power stations and other nuclear application sites must be tested to verify their anti-radiation performance.
[0004] So far, there has been no report in publications about using radiation to continuously irradiate cables to test their anti-radiation performance. Due to the inability to use radiation to continuously irradiate cables to test their anti-radiation performance, it is difficult to ensure the reliability and safety of nuclear power stations and other nuclear application sites. In order to meet the requirement that cables can withstand nuclear radiation and extreme environmental conditions such as high temperature and high pressure, the cables must be modified during manufacturing. This will increase manufacturing costs. SUMMARY
[0005] The utility model solves the problem of providing a nuclear power station cable anti-radiation performance testing device. Using the utility model not only ensures the reliability and safety of nuclear power stations, but also reduces the manufacturing cost of cables used in nuclear power stations.
[0006] The above problems solved by the utility model are realized by the following technical solutions:
[0007] The nuclear power station cable anti-radiation performance testing device of the utility model comprises an irradiation chamber, a top frame in the irradiation chamber, and a source carrier box connected below the top frame. The source carrier box is a lifting type source carrier box, which is flat and has a source rod inside. There are at least two rows of object carrier boxes on both sides of the source carrier box for accommodating irradiated objects. There is a space between the source carrier box and the object carrier boxes on both sides, and between the two adjacent rows of object carrier boxes. The cross section of the object carrier box is rectangular, and the upper end is movably connected to the top frame, and the lower end has a space with the ground. The feature is that there is a cable seat in the space below the two rows of object carrier boxes adjacent to the source carrier box. The cable seat is a long slot with a length that matches the horizontal length of the corresponding row of object carrier boxes, and a cable is installed inside.
[0008] Motors are connected to the top frame on both sides corresponding to the source carrier box. The output shaft of the motor and the two ends of the source carrier box have steel wires, one end of the steel wire is connected and wound around the output shaft of the motor, and the other end is connected to the upper end of the source carrier box.
[0009] The further improved scheme of the utility model discloses that the lower side of the top frame corresponding to each column of the object carrying box has guide rails, the guide rails are parallel to each other, the cross sections of the guide rails are all rectangular, the lower wall center of the guide rails all has a through groove longitudinally penetrating the total length, the guide rails all have rolling mechanisms twice as many as the object carrying boxes, the rolling mechanisms all contain two rollers and an axle, the wheel faces of the two rollers are parallel to each other, the two rollers are respectively located on the lower wall of the guide rail on both sides of the through groove, the centers of the two rollers are movably connected to both ends of the corresponding axle, the axially middle part of the axle has a hanger, the upper end of the hanger is connected with the corresponding axle, the lower end of the hanger penetrates the corresponding through groove and extends below the guide rail and is connected with the upper end of the corresponding object carrying box of the corresponding column.
[0010] The box wall adjacent to the object carrying box is a grid-shaped box wall.
[0011] The further improved scheme of the utility model discloses that the further improved scheme of the utility model is that the irradiation chamber has a water pool below, the water pool has a pool cover, the pool cover has a long hole, the long hole corresponds to the object carrying box, the width and the length of the long hole are respectively adapted to the thickness and the transverse length of the object carrying box, so that the object carrying box can pass through the long hole and enter the water pool in the non-working state.
[0012] From the above scheme, it can be seen that the cable seat is arranged in the space between the two columns of the object carrying boxes adjacent to the object carrying box, the cable seat is a long groove, the length of the long groove is adapted to the transverse length of the corresponding column of the object carrying box, and the cable is arranged in the long groove. Through the transformation of the existing cobalt source irradiation chamber, the cable is laid beside the object carrying box containing the cobalt source rod, so that the cable can be continuously and long-time irradiated by the rays, the cable can withstand the extreme environmental conditions such as nuclear radiation, high temperature and high pressure, the cable does not need to be transformed in the manufacturing process, the reliability and safety of the nuclear power station can be ensured, and the manufacturing cost of the cable used in the nuclear power station can be reduced. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 is a structural schematic view of the cable anti-radiation performance test device for nuclear power stations of the utility model;
[0014] Figure 2 is Figure 1 A-A sectional view schematic view of the utility model;
[0015] Figure 3 is Figure 1 I point enlarged schematic view of the utility model; DETAILED DESCRIPTION
[0016] The utility model will be further explained in detail in combination with the drawings:
[0017] As Figure 1 and Figure 2As shown, the cable anti-radiation performance testing device for nuclear power station comprises an irradiation chamber 3. The irradiation chamber 3 is a cobalt source irradiation chamber, and a top frame 10 is arranged in the irradiation chamber 3. A source loading box 9 is arranged at the middle of the lower surface of the top frame 10. The source loading box 9 is a lifting type source loading box, which is flat, and a cobalt source rod arranged vertically is arranged in the source loading box 9. Two rows of object loading boxes 4 for containing irradiated objects are arranged on the two side surfaces of the source loading box 9. A space is left between the source loading box 9 and the object loading boxes 4 on the two sides thereof, and between the two rows of object loading boxes 4 adjacent to each other. The cross section of the object loading box 4 is rectangular, the upper end of the object loading box 4 is connected to the top frame 10, and a space is left between the lower end of the object loading box 4 and the ground. A cable seat 12 is arranged in the space below the two rows of object loading boxes 4 adjacent to the source loading box 9, the cable seat 12 is a long groove, the length of the cable seat 12 is the same as the horizontal length of the corresponding row of object loading boxes 4, and a cable 11 is arranged in the cable seat 12. In this way, the materials in the object loading boxes 4 on the two sides of the source loading box 9 are irradiated normally, and the cable 11 in the cable seat 12 is also irradiated. Moreover, the materials in the object loading boxes 4 can be irradiated for a short period of time according to needs, and the cable 11 in the cable seat 12 can be continuously irradiated for a long period of time, and the two cables 11 in the cable seat 12 are regularly replaced during the continuous long period of time of irradiation, so that the two cables 11 in the cable seat 12 can be uniformly irradiated. If the cable 11 irradiated for a long period of time does not have problems, it means that the cable 11 passes the anti-radiation performance test and has the performance of resisting nuclear radiation and extreme environmental conditions such as high temperature and high pressure.
[0018] See Figure 3 In order to facilitate the connection between the upper ends of the four rows of object loading boxes 4 and the top frame 10, guide rails 6 are arranged on the lower side surfaces of the top frame 10 corresponding to the four rows of object loading boxes 4. The guide rails are parallel to each other, and they are all rectangular tubes with rectangular cross sections, and a through groove 15 extending through the entire length is arranged in the center of the lower wall of each guide rail. A plurality of rolling mechanisms are arranged in the guide rails. Each rolling mechanism comprises two rollers 14 and an axle 13. The two rollers 14 are parallel to each other, that is, the two rollers 14 are concentric, and they are arranged on the lower wall of the guide rail 6 on the two sides of the through groove 15, and the centers of the two rollers 14 are rotatably connected to the two ends of the corresponding axle 13. A hanger 5 is arranged in the axial middle of the axle 13. The upper end of the hanger 5 is connected to the corresponding axle 13, and the lower end of the hanger 5 extends below the guide rail 6 after passing through the corresponding through groove 15, and is connected to the upper end of the corresponding row of object loading boxes 4. Among them, there are two rolling mechanisms between each object loading box 4 and the guide rail 6. In this way, each object loading box 4 can be moved along the guide rail 6 under the drive of the two rolling mechanisms.
[0019] In order to realize the lifting of the carrier source box 9, a motor 8 is installed on the top frame 10 corresponding to the two ends of the upper edge of the carrier source box 9. The output shaft of the two motors 8 is provided with a steel wire rope 7 corresponding to the two ends of the upper edge of the carrier source box 9. One end of the steel wire rope 7 is connected and wound on the output shaft of the motor 8, and the other end is connected to the corresponding end of the upper edge of the carrier source box 9.
[0020] See Figure 2 In order to improve the irradiation effect on the material in the carrier box 4, the box wall adjacent to the carrier source box 9 is a grid-shaped box wall.
[0021] In addition, a water tank 1 is arranged under the irradiation chamber 3, and a tank cover 2 is arranged on the water tank 1. A long hole 16 is processed on the tank cover 2, and the width and length of the long hole 16 are adapted to the thickness and transverse length of the carrier source box 9 respectively, so that the carrier source box 9 can pass through the long hole 16 and be lifted.
[0022] In operation, the rotation of the output shaft of the motor 8 can drive the carrier source box 9 to rise above the tank cover 2. When not in operation, the rotation of the output shaft of the motor 8 can drive the carrier source box 9 to descend and pass through the long hole 16 on the tank cover 2 and descend into the water tank 1.
Claims
1. A cable radiation resistance testing device for nuclear power plants, comprising an irradiation chamber (3), a top frame (10) is arranged in the irradiation chamber (3), and a source box (9) is connected below the top frame (10); the source box (9) is a lifting type source box, which is flat, and a source rod is arranged in the source box (9); at least two rows of object boxes (4) for accommodating irradiated objects are arranged on the two side surfaces of the source box (9); there is a spacing between the source box (9) and the object boxes (4) on the two sides of the source box (9), and there is a spacing between the two adjacent rows of object boxes (4); the cross section of the object box (4) is rectangular, the upper end of the object box (4) is movably connected with the top frame (10), and the lower end of the object box (4) is spaced apart from the ground; characterized in that: The space between the two rows of the object boxes (4) adjacent to the source box (9) is provided with a cable seat (12), which is a long slot with a length matching the lateral length of the corresponding row of the object boxes (4) and contains cables (11) therein. 2. The device for testing radiation resistance of a cable for nuclear power plants according to claim 1, characterized in that: The top frame (10) corresponding to the source box (9) is connected with a motor (8) on each side; the output shaft of the motor (8) is connected with the two ends of the upper edge of the source box (9) through a steel wire rope (7), one end of which is connected with and wound around the output shaft of the motor (8) and the other end of which is connected with the upper end of the source box (9).
3. The device for testing radiation resistance of a nuclear power plant cable according to claim 1, characterized in that: The bottom side of the top frame (10) corresponding to each row of the object boxes (4) is provided with a guide rail (6); the guide rails (6) are parallel to each other and have a rectangular cross section, and the center of the lower wall of each of the guide rails (6) is provided with a through slot (15) extending along the total length thereof; the guide rail (6) contains a rolling mechanism twice as many as the number of the object boxes, which includes two rollers (14) and an axle (13); the two rollers (14) have parallel wheel surfaces and are respectively arranged on the lower wall of the guide rail (6) on both sides of the through slot (15), and the center of each of the rollers (14) is movably connected to the two ends of the corresponding axle (13); the axle (13) is provided with a hanger rod (5) in the middle of the axial direction thereof, the upper end of the hanger rod (5) is connected with the corresponding axle (13), and the lower end of the hanger rod (5) extends out below the guide rail (6) after passing through the corresponding through slot (15) and is connected with the upper end of the corresponding object box (4) of the corresponding row.
4. The radiation resistance test apparatus for nuclear power plant cables as recited in claim 1, characterized by: The wall of the object box (4) adjacent to the source box (9) is a grid-shaped wall.
5. The nuclear power plant cable radiation resistance test apparatus according to any one of claims 1 to 4, characterized by: The irradiation chamber (3) is provided with a water pool (1) below the ground, and the water pool (1) is provided with a pool cover (2); the pool cover (2) is provided with a long hole corresponding to the source box (9), and the width and length of the long hole are matched with the thickness and lateral length of the source box (9) respectively, so that the source box (9) can pass through the long hole and enter the water pool in a non-working state.