Light leakage prevention device of detector

Abstract

The utility model relates to the technical field of detector light leakage prevention, and discloses a detector light leakage prevention device which comprises a detection assembly, the detection assembly comprises a mounting pipe, and a base is arranged at the bottom of the mounting pipe; the scintillation crystal is arranged at the top of the base; according to the light leakage prevention device for the detector, the scintillation crystal is placed on the inner side of the mounting tube, then the photomultiplier tube is mounted at the top of the scintillation crystal, the mounting seat is arranged at the top of the photomultiplier tube, and the mounting seat is mounted at the bottom of the pressing plate, so that the cover body and the base are respectively arranged at the top and the bottom of the mounting tube for sealing; according to the utility model, the cover body is arranged on the mounting base, so that a good light leakage prevention effect is achieved, the mounting base, the cover body and the mounting tube are all made of polyethylene materials, light shielding of the scintillation crystal enables rays of the scintillation crystal to be hardly lost, light leakage of the scintillation crystal is avoided, assembly, debugging and maintenance are very convenient, and the performance of the nuclear radiation detector is also greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detector light leakage prevention, in particular to a detector light leakage prevention device. Background Art

[0002] A nuclear radiation detector is a device that detects nuclear radiation by exploiting the ionization, luminescence, or physical or chemical changes induced by nuclear radiation in gases, liquids, or solids. Numerous types of nuclear radiation detectors exist for various applications, each operating in a different way. The information provided by these detectors can directly or indirectly determine parameters such as the type, energy, intensity, or nuclear lifetime of the radiation.

[0003] According to the description of patent application number "CN201922177349.3 Array-type nuclear radiation detector based on GAGG scintillator", "the GAGG scintillator array and the photoelectric conversion device array are coupled one-to-one, each channel is read out separately, there is no crosstalk or light leakage between each other, and they can be read out and displayed separately or superimposed together for display, while meeting the measurement requirements in low-dose rate and high-dose rate environments."

[0004] According to the above patent, existing photoelectric nuclear radiation detectors will have light leakage. Most photoelectric detectors use scintillation crystals for operation. The light leakage of scintillation crystals has a great impact on the performance of nuclear radiation detectors, and will also affect the values detected by Houhu. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the shortcomings of the existing technology, the utility model provides a detector anti-light leakage device, which has the advantage of preventing nuclear radiation detectors from leaking light, and solves the problem of light leakage in existing nuclear radiation detectors, which affects the detection values.

[0007] (2) Technical solution

[0008] To achieve the above purpose, the present invention provides the following technical solutions: a detector anti-light leakage device, comprising a detection component, the detection component comprising

[0009] A mounting tube, wherein a base is provided at the bottom of the mounting tube;

[0010] a scintillation crystal, disposed on top of the base;

[0011] a photomultiplier tube, disposed on top of the scintillation crystal;

[0012] A mounting base, arranged on the top of the photomultiplier tube;

[0013] A pressing plate, arranged on the top of the pressing plate;

[0014] The cover is arranged on the top of the mounting tube.

[0015] Preferably, an auxiliary component is provided inside the mounting tube, and the auxiliary component includes

[0016] The spring is arranged on opposite surfaces of the cover and the pressure plate.

[0017] Preferably, screw rods are symmetrically provided at the bottom of the pressing plate, and one end of the screw rods passes through the bottom of the pressing plate and is inserted into the inner side of the cover body.

[0018] Preferably, the base is connected to the mounting pipe via bolts.

[0019] Preferably, a rubber pad is provided on the inner side wall of the base.

[0020] Preferably, a docking groove is provided on the inner bottom of the base.

[0021] Preferably, a sealing gasket is provided on the top of the inner side wall of the mounting tube.

[0022] Preferably, the cover body and the mounting pipe are connected by bolts.

[0023] (3) Beneficial effects

[0024] Compared with the prior art, the present invention provides a detector light leakage prevention device with the following beneficial effects:

[0025] The detector light leakage prevention device is constructed by placing a scintillation crystal inside a mounting tube and then mounting a photomultiplier tube on top of the scintillation crystal. A mounting base is provided on the top of the photomultiplier tube, and the mounting base is mounted on the bottom of a pressure plate. In this way, a cover and a base are respectively provided at the top and bottom of the mounting tube for sealing, thereby achieving a good light leakage prevention effect. Moreover, the mounting base, the cover and the mounting tube are all made of polyethylene material, so that the scintillation crystal is shielded from light and the scintillation crystal radiation is almost not lost, thereby ensuring that the scintillation crystal does not leak light and making assembly, commissioning and maintenance very convenient, thereby greatly improving the performance of the nuclear radiation detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the utility model;

[0027] Figure 2 It is a structural schematic diagram of the top of the base in the utility model.

[0028] In the picture:

[0029] 1. Detection assembly; 11. Mounting tube; 12. Base; 13. Scintillator crystal; 131. Photomultiplier tube; 14. Mounting base; 15. Press plate; 16. Cover;

[0030] 2. Auxiliary components; 21. Spring; 22. Screw; 23. Rubber pad; 24. Docking groove; 25. Sealing gasket. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1

[0033] A detector light leakage prevention device, comprising a detection component 1, the detection component 1 comprising

[0034] A mounting tube 11, wherein a base 12 is provided at the bottom of the mounting tube 11;

[0035] A scintillation crystal 13 is disposed on the top of the base 12;

[0036] A photomultiplier tube 131 is disposed on top of the scintillation crystal 13;

[0037] A mounting base 14 is provided on the top of the photomultiplier tube 131;

[0038] a pressing plate 15 , provided on the top of the pressing plate 15 ;

[0039] The cover 16 is disposed on the top of the mounting tube 11 .

[0040] See Figure 1-2 By placing the scintillation crystal 13 on the inner side of the mounting tube 11 and then installing the photomultiplier tube 131 on the top of the scintillation crystal 13, a mounting base 14 is provided on the top of the photomultiplier tube 131, and the mounting base 14 is installed on the bottom of the pressure plate 15. In this way, by respectively providing a cover 16 and a base 12 at the top and bottom of the mounting tube 11 for sealing, a good light leakage prevention effect is achieved. Moreover, whether it is the mounting base 14, the cover 16 or the mounting tube 11, they are all made of polyethylene material. In this way, the scintillation crystal is shielded from light and the scintillation crystal rays are almost not lost, which not only ensures that the scintillation crystal does not leak light, but also makes assembly, debugging and maintenance very convenient, and greatly improves the performance of the nuclear radiation detector.

[0041] Example 2

[0042] An auxiliary component 2 is added on the basis of the first embodiment.

[0043] An auxiliary component 2 is provided inside the mounting tube 11, and the auxiliary component 2 includes a spring 21, which is provided on opposite surfaces of the cover body 16 and the pressure plate 15. Screws 22 are symmetrically provided at the bottom of the pressure plate 15, and one end of the screw 22 passes through the bottom of the pressure plate 15 and is inserted into the inner side of the cover body 16. The base 12 is connected to the mounting tube 11 by bolts, and a rubber pad 23 is provided on the inner side wall of the base 12. A docking groove 24 is provided on the inner bottom of the base 12. A sealing gasket 25 is provided on the top of the inner side wall of the mounting tube 11, and the cover body 16 is connected to the mounting tube 11 with bolts.

[0044] See Figure 1-2 By symmetrically arranging springs 21 on the opposite surfaces of the cover body 16 and the pressure plate 15, the scintillation crystal 13 can be squeezed and limited. By symmetrically arranging screws 22 at the bottom of the pressure plate 15, the degree of compression of the scintillation crystal 13 inside the mounting tube 11 can be adjusted. By bolting the base 12 to the mounting tube 11, it is convenient to disassemble the base 12 for replacement and maintenance later. By arranging a rubber pad 23 on the inner side wall of the base 12, the base 12 and the mounting tube 11 can be docked more stably. By opening a docking groove 24 at the inner bottom of the base 12, the bottom of the mounting tube 11 can be inserted into the inner side of the docking groove 24 for easy fixation. By arranging a sealing gasket 25 on the top of the inner side wall of the mounting tube 11, it can further prevent light leakage. By bolting the cover body 16 to the mounting tube 11, it is convenient to disassemble the cover body 16 for maintenance of internal parts later.

[0045] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detector light leakage prevention device, characterized in that: The detection component (1) includes A mounting tube (11), wherein a base (12) is provided at the bottom of the mounting tube (11); a scintillation crystal (13), arranged on the top of the base (12); A photomultiplier tube (131) is arranged on top of the scintillation crystal (13); A mounting base (14) is arranged on the top of the photomultiplier tube (131); A pressing plate (15) is provided on the top of the pressing plate (15); A cover body (16) is arranged on the top of the mounting tube (11).

2. The detector light leakage prevention device according to claim 1, characterized in that: An auxiliary component (2) is provided inside the installation tube (11), and the auxiliary component (2) includes A spring (21) is provided on opposite surfaces of the cover (16) and the pressure plate (15).

3. The detector light leakage prevention device according to claim 2, characterized in that: A screw rod (22) is symmetrically provided at the bottom of the pressing plate (15), and one end of the screw rod (22) passes through the bottom of the pressing plate (15) and is inserted into the inner side of the cover body (16).

4. The detector light leakage prevention device according to claim 3, characterized in that: The base (12) is connected to the mounting pipe (11) via bolts.

5. The detector light leakage prevention device according to claim 4, characterized in that: The inner side wall of the base (12) is provided with a rubber pad (23).

6. The detector light leakage prevention device according to claim 5, characterized in that: A docking groove (24) is provided on the inner bottom of the base (12).

7. The detector light leakage prevention device according to claim 6, characterized in that: A sealing gasket (25) is provided on the top of the inner side wall of the mounting tube (11).

8. The detector light leakage prevention device according to claim 7, characterized in that: The cover body (16) is connected to the mounting pipe (11) by bolts.

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