Source rod for ray detection

Abstract

The utility model relates to the technical field of ray detection, in particular to a source rod for ray detection, which comprises a detection rod main body, a heat exchange tube port is arranged on the outer wall of the detection rod main body and penetrates to the inner wall of the heat exchange tube port, and a source discharge mechanism is mounted and connected on one side of the detection rod main body far away from the heat exchange tube port. The outer wall of the detection rod main body is fixedly connected with a detection mechanism, and the detection mechanism penetrates into the source discharge mechanism. Through mutual cooperation between the detection mechanism and internal parts of the source discharge mechanism, connection and fixation between the detection rod main body and the sealing lead box can be completed, and sealing isolation of the spherical radioactive source from the sealing lead box can be conveniently removed; the spherical radioactive source directly rolls into the detection rod main body from the sealing lead box, so that a worker can conveniently and directly insert the detection rod main body into the port of the heat exchange tube for detection, direct contact between the worker and the spherical radioactive source is reduced, and the spherical radioactive source is prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of ray detection, in particular to a source rod for ray detection. Background Art

[0002] Radiographic testing is a common nondestructive testing technology for specialized equipment, used for boilers, pressure vessels, and pressure piping. Radiographic testing can penetrate objects impermeable to visible light and, while doing so, undergoes complex physical and chemical reactions with the material. This can ionize atoms, cause certain substances to fluoresce, and even induce photochemical reactions. If a defect exists in a localized area of ​​a workpiece, it will alter the object's attenuation of the radiation, causing changes in the intensity of the transmitted radiation. Consequently, by employing specific testing methods, such as using film to detect the intensity of the transmitted radiation, it is possible to determine the presence, location, and size of defects in the workpiece. Consequently, radiographic testing is widely used in pipeline and welding testing technologies.

[0003] When performing radiographic inspection of the girth weld seam between the stainless steel shell-side tube sheet and the cone in the steam generation system, there is a certain distance between the girth weld seam and the end of the tube-side heat exchange tube. The radioactive source needs to be removed from the lead box by workers wearing thick radiation clothing and placed in the tube-side heat exchange tube. Manual handling of the radioactive source can easily lead to the source failing to reach the designated location and causing it to fall off, thus causing the radioactive source to radiate to surrounding workers and affect their health.

[0004] Therefore, it is necessary for us to propose a source rod for ray detection to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a source rod for ray detection, which can complete the connection and fixation between the detection rod body and the sealed lead box through the mutual cooperation between the detection mechanism and the internal parts of the radiation source mechanism, and facilitate the spherical radioactive source to release the sealing isolation from the sealed lead box and directly roll from the sealed lead box to the inside of the detection rod body, so that the staff can directly insert the detection rod body into the port of the heat exchange tube for detection, reduce the direct contact between the staff and the spherical radioactive source, thereby avoiding the spherical radioactive source from falling off, and solve the problem in the prior art that the radioactive source cannot reach the designated position when manually taking the radioactive source, thereby causing the source to fall off, thereby causing the radioactive source to radiate to the surrounding staff and affecting the workers' physical safety.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a source rod for radiation detection, comprising a detection rod body, the outer wall of the detection rod body being provided with a heat exchange tube port and penetrating to the inner wall of the heat exchange tube port, a source mechanism being installed and connected on the side of the detection rod body away from the heat exchange tube port, a detection mechanism being connected and fixed to the outer wall of the detection rod body and penetrating to the interior of the source mechanism.

[0007] Preferably, the radiation source mechanism includes a sealed lead box, which is located on the side of the detection rod main body away from the heat exchange tube port, and the sealed lead box is slidably connected to a plurality of sliding blocks on the side close to the detection rod main body, and penetrates into the interior of the sealed lead box, the top end of the sliding block is connected and fixed to a limiting plate, and is slidably connected to the interior of the sealed lead box, one side of the limiting plate is connected and fixed to a contraction spring, the inner wall of the sealed lead box is slidably connected to an isolation plate, the top and bottom ends of the isolation plate are respectively connected and fixed to support blocks, and are slidably connected to the interior of the sealed lead box, and are located on one side of the sliding block, the top end of the support block is connected and fixed to a telescopic spring, the inner wall of the sealed lead box is rollingly connected to a spherical radiation source, and is located on the side of the isolation plate away from the detection rod main body.

[0008] Preferably, the detection mechanism includes a detection end, which is installed and fixed on the side of the detection rod body that passes through the inner wall of the heat exchange tube port, the inner wall of the detection rod body is provided with an inclined movable groove, and is located on one side of the detection end, the side of the detection rod body close to the sealed lead box is fixed with a mounting bolt, and passes through the interior of the sealed lead box, the outer wall of the side of the detection rod body close to the source mechanism is sleeved and fixed with a hexagonal barrier, and fits with the outer wall of the sliding block, the inner wall of the sealed lead box is installed and connected with a rubber soft plate, and fits with the outer wall of the mounting bolt, and is located on the side of the isolation plate away from the spherical radiation source.

[0009] Preferably, the inner wall of the sealed lead box is provided with a sliding groove matching the sliding block, the inner wall of the sealed lead box is provided with a limiting groove matching the limiting plate, and the contact surfaces of the sliding block and the support block are both provided with tapered surfaces.

[0010] Preferably, the inner wall of the sealed lead box is provided with a partition groove matching the isolation plate, the interior of the sealed lead box is provided with a placement groove matching the spherical radioactive source, and one side of the sealed lead box is provided with a threaded groove matching the mounting bolt.

[0011] Preferably, a socket matching the detection rod body is opened on one side of the heat exchange tube port, the movable groove is diffusely distributed at a certain angle on the inner wall of the detection rod body, and the aperture close to the detection end is larger than the aperture at the connection between the mounting bolt and the sealing lead box.

[0012] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0013] 1. The detection rod body and the sealed lead box are brought close to each other and connected to each other through the mounting bolts and the threaded groove on the sealed lead box. At the same time, the rubber soft plate in the sealed lead box seals and clamps the mounting bolts and the sealed lead box to complete the connection between the detection rod body of the sealed lead box, so that the hexagonal barrier contacts the sliding block on one side of the sealed lead box, and the sliding block drives the top limit plate to squeeze the contraction spring to move, so that the sliding block moves to squeeze the support block, so that the support block is forced to squeeze the telescopic spring to move, and the support block moves to drive the isolation plate to move, so that the isolation plate moves and opens, thereby releasing the sealed isolation of the spherical radioactive source in the sealed lead box. The installation connection between the detection rod body and the sealed lead box is completed, and the sealed isolation of the spherical radioactive source is released;

[0014] 2. After completing the installation and connection between the detection rod body and the sealed lead box, insert the detection rod body into the inner wall of the heat exchange tube port through the jack on the heat exchange tube port. At the same time, the detection rod body shakes to drive the spherical radioactive source to move out of the sealed lead box and move to the inner wall of the detection rod body. The spherical radioactive source rolls to the side of the detection end through the moving groove on the inner wall of the detection rod body, and the detection rod body drives the detection end to move to a suitable position on the inner wall of the heat exchange tube port to complete the detection of the inner wall of the heat exchange tube port. This can reduce the direct contact of the staff with the spherical radioactive source and avoid the risk of the spherical radioactive source falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the sealed lead box and the detection rod body of the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the detection rod body of the present utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the sealed lead box of the present utility model.

[0020] Description of reference numerals:

[0021] 1. Detection rod body; 2. Heat exchange tube port; 3. Source mechanism; 301. Sealed lead box; 302. Sliding block; 303. Limiting plate; 304. Contraction spring; 305. Isolation plate; 306. Support block; 307. Telescopic spring; 308. Spherical radioactive source; 4. Detection mechanism; 401. Detection end; 402. Moving slot; 403. Mounting bolt; 404. Hexagonal barrier; 405. Rubber soft board. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] The utility model provides Figure 1-4 The illustrated source rod for radiation detection includes a detection rod body 1. The outer wall of the detection rod body 1 is provided with a heat exchange tube port 2, which extends through the inner wall of the heat exchange tube port 2. A radiation source mechanism 3 is installed and connected to the side of the detection rod body 1 away from the heat exchange tube port 2. A detection mechanism 4 is connected and fixed to the outer wall of the detection rod body 1, which extends through the interior of the radiation source mechanism 3. Through the mutual cooperation between the detection mechanism 4 and the internal parts of the radiation source mechanism 3, the connection and fixation between the detection rod body 1 and the sealed lead box 301 can be completed, and the spherical radiation source 308 can be easily released from the sealed lead box 301 and rolled directly from the sealed lead box 301 into the interior of the detection rod body 1. This makes it convenient for workers to directly insert the detection rod body 1 into the heat exchange tube port 2 for detection, reducing direct contact between workers and the spherical radiation source 308, thereby preventing the spherical radiation source 308 from falling off.

[0024] Refer to the instruction manual Figure 1-4 The source mechanism 3 includes a sealed lead box 301, which is located on the side of the detection rod body 1 away from the heat exchange tube port 2. The side of the sealed lead box 301 close to the detection rod body 1 is slidably connected with multiple sliding blocks 302, and penetrates into the interior of the sealed lead box 301. The top of the sliding block 302 is connected and fixed with a limit plate 303, and is slidably connected to the interior of the sealed lead box 301. One side of the limit plate 303 is connected and fixed with a contraction spring 304. The inner wall of the sealed lead box 301 is slidably connected with an isolation plate 305. The isolation plate 305 The top and bottom ends are respectively connected and fixed with support blocks 306, and are slidably connected to the inside of the sealed lead box 301 and are located on one side of the sliding block 302. The top of the support block 306 is connected and fixed with a telescopic spring 307. The inner wall of the sealed lead box 301 is rollingly connected with a spherical radioactive source 308, and is located on the side of the isolation plate 305 away from the detection rod body 1. After the sealed lead box 301 is connected and fixed to the detection rod body 1, it is convenient to release the sealed isolation of the spherical radioactive source 308, thereby facilitating the spherical radioactive source 308 to roll into the detection rod body 1.

[0025] Refer to the instruction manual Figure 1-4 The detection mechanism 4 includes a detection end 401, which is installed and fixed on the side of the detection rod body 1 that passes through the inner wall of the heat exchange tube port 2. The inner wall of the detection rod body 1 is provided with an inclined moving groove 402, which is located on one side of the detection end 401. A mounting bolt 403 is installed and fixed on the side of the detection rod body 1 close to the sealed lead box 301 and passes through the interior of the sealed lead box 301. A hexagonal barrier 404 is fixed on the outer wall of the side of the detection rod body 1 close to the source mechanism 3 and fits with the outer wall of the sliding block 302. A rubber soft plate 405 is installed and connected to the inner wall of the sealed lead box 301, which fits with the outer wall of the mounting bolt 403 and is located on the side of the isolation plate 305 away from the spherical radioactive source 308. Through the mutual cooperation between the internal parts of the detection mechanism 4, it is convenient to drive the sealed lead box 301 and the detection rod body 1 to be installed and fixed to each other, and to facilitate the spherical radioactive source 308 to roll to the side of the detection end 401 in the detection rod body 1.

[0026] Refer to the instruction manual Figure 1-4 The inner wall of the sealed lead box 301 is provided with a sliding groove that matches the sliding block 302, and the inner wall of the sealed lead box 301 is provided with a limiting groove that matches the limiting plate 303. The contact surfaces of the sliding block 302 and the support block 306 are both provided with conical surfaces. Through the contact surfaces of the sliding block 302 and the support block 306 are both provided with conical surfaces, the white jade sliding block 302 is subjected to force to squeeze the support block 306.

[0027] Refer to the instruction manual Figure 1-4 The inner wall of the sealed lead box 301 is provided with a partition groove that matches the isolation plate 305, and the interior of the sealed lead box 301 is provided with a placement groove that matches the spherical radioactive source 308. A threaded groove that matches the mounting bolt 403 is provided on one side of the sealed lead box 301. The partition groove that matches the isolation plate 305 is provided on the inner wall of the sealed lead box 301, so that the isolation plate 305 can isolate and seal the spherical radioactive source 308 inside the sealed lead box 301.

[0028] Refer to the instruction manual Figure 1-4 A socket matching the detection rod body 1 is provided on one side of the heat exchange tube port 2, and the movable groove 402 is diffusely distributed at a certain angle on the inner wall of the detection rod body 1, and the aperture on the side close to the detection end 401 is larger than the aperture at the connection between the mounting bolt 403 and the sealing lead box 301. The movable groove 402 is diffusely distributed at a certain angle on the inner wall of the detection rod body 1, and the aperture on the side close to the detection end 401 is larger than the aperture at the connection between the mounting bolt 403 and the sealing lead box 301, so that the spherical radioactive source 308 can be moved out of the sealing lead box 301 and roll to the side of the detection end 401 through the movable groove 402.

[0029] This utility works as follows:

[0030] Refer to the instruction manual Figure 1-4 , by bringing the detection rod body 1 and the sealed lead box 301 close to each other, and connecting them with the threaded groove on the sealed lead box 301 through the mounting bolt 403, and at the same time, the rubber soft plate 405 in the sealed lead box 301 seals and clamps the mounting bolt 403 and the sealed lead box 301, completing the connection between the sealed lead box 301 and the detection rod body 1, so that the hexagonal barrier 404 contacts the sliding block 302 on one side of the sealed lead box 301, and the sliding block 302 drives the top limit plate 303 to squeeze the contraction spring 304 to contract and move, so that the sliding block 302 moves to squeeze the support block 306, so that the support block 306 is forced to squeeze the telescopic spring 307 to contract and move, and the support block 306 moves to drive the isolation plate 305 to move, so that the isolation plate 305 moves and opens, releasing the sealed isolation of the spherical radioactive source 308 in the sealed lead box 301, and the installation connection between the detection rod body 1 and the sealed lead box 301 is completed, and the sealed isolation of the spherical radioactive source 308 is released;

[0031] Refer to the instruction manual Figure 1-4 After completing the installation and connection between the detection rod body 1 and the sealed lead box 301, the detection rod body 1 is inserted into the inner wall of the heat exchange tube port 2 through the jack on the heat exchange tube port 2. At the same time, the detection rod body 1 is shaken to drive the spherical radioactive source 308 to move out of the sealed lead box 301 and move to the inner wall of the detection rod body 1, so that the spherical radioactive source 308 rolls to the side of the detection end 401 through the movable groove 402 on the inner wall of the detection rod body 1, and the detection rod body 1 drives the detection end 401 to move to a suitable position on the inner wall of the heat exchange tube port 2, completing the detection of the inner wall of the heat exchange tube port 2, thereby reducing the direct contact of the staff with the spherical radioactive source 308 and avoiding the risk of the spherical radioactive source 308 falling off.

[0032] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A source rod for ray detection, comprising a detection rod body (1), characterized in that: The outer wall of the detection rod body (1) is provided with a heat exchange tube port (2) and penetrates to the inner wall of the heat exchange tube port (2); a source release mechanism (3) is installed and connected to the side of the detection rod body (1) away from the heat exchange tube port (2); and a detection mechanism (4) is connected and fixed to the outer wall of the detection rod body (1) and penetrates to the interior of the source release mechanism (3).

2. The source rod for radiation detection according to claim 1, characterized in that: The source release mechanism (3) includes a sealed lead box (301), the sealed lead box (301) is located on a side of the detection rod body (1) away from the heat exchange tube port (2), the sealed lead box (301) is slidably connected to a plurality of sliding blocks (302) on a side close to the detection rod body (1), and penetrates into the interior of the sealed lead box (301), the top end of the sliding block (302) is connected and fixed to a limiting plate (303), and is slidably connected to the interior of the sealed lead box (301), and one side of the limiting plate (303) is connected and fixed to a contraction spring (304), the inner wall of the sealed lead box (301) is slidably connected to an isolation plate (305), the top and bottom ends of the isolation plate (305) are respectively connected and fixed with support blocks (306), and are slidably connected to the inside of the sealed lead box (301), and are located on one side of the sliding block (302), the top end of the support block (306) is connected and fixed with a telescopic spring (307), the inner wall of the sealed lead box (301) is rollingly connected to a spherical radioactive source (308), and is located on the side of the isolation plate (305) away from the detection rod body (1).

3. The source rod for radiation detection according to claim 2, characterized in that: The detection mechanism (4) includes a detection end (401), which is fixed to the side of the detection rod body (1) that passes through the inner wall of the heat exchange tube port (2). The inner wall of the detection rod body (1) is provided with an inclined moving groove (402) located on one side of the detection end (401). A mounting bolt (403) is fixed to the side of the detection rod body (1) close to the sealed lead box (301) and passes through the interior of the sealed lead box (301). A hexagonal barrier (404) is sleeved and fixed to the outer wall of the detection rod body (1) close to the radiation source mechanism (3), and is in contact with the outer wall of the sliding block (302). A rubber soft plate (405) is installed and connected to the inner wall of the sealed lead box (301), and is in contact with the outer wall of the mounting bolt (403) and is located on the side of the isolation plate (305) away from the spherical radiation source (308).

4. The source rod for radiation detection according to claim 2, characterized in that: The inner wall of the sealed lead box (301) is provided with a sliding groove matching the sliding block (302), the inner wall of the sealed lead box (301) is provided with a limiting groove matching the limiting plate (303), and the contact surfaces of the sliding block (302) and the supporting block (306) are both provided with tapered surfaces.

5. The source rod for radiation detection according to claim 3, characterized in that: The inner wall of the sealed lead box (301) is provided with a partition groove matching the isolation plate (305), the interior of the sealed lead box (301) is provided with a placement groove matching the spherical radioactive source (308), and one side of the sealed lead box (301) is provided with a threaded groove matching the mounting bolt (403).

6. The source rod for radiation detection according to claim 3, characterized in that: A socket matching the detection rod body (1) is provided on one side of the heat exchange tube port (2); the movable groove (402) is diffusely distributed at a certain angle on the inner wall of the detection rod body (1); and the aperture on the side close to the detection end (401) is larger than the aperture at the connection between the mounting bolt (403) and the sealing lead box (301).

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