Nuclear radiation detector composed of scintillation fiber

Abstract

A nuclear radiation detector composed of scintillation optical fibers comprises an aviation plug, a circuit shell and a measuring tank, and is characterized in that the aviation plug is arranged at the top of the circuit shell; the measuring tank is arranged on the bottom surface of the circuit shell, and a flickering optical fiber bundle is arranged in the measuring tank; a photomultiplier tube seat and a photomultiplier tube are arranged in the circuit shell; the photomultiplier tube seat is arranged above the photomultiplier tube in a sleeving manner; the photomultiplier is connected with the scintillation optical fiber bundle, and the photomultiplier is located above the scintillation optical fiber bundle; the end parts of the scintillation optical fiber bundles are distributed in an array expanding manner; according to the utility model, the optical fiber bundle array is adopted for detection, and water flow can flow into gaps of the optical fiber bundle array, so that the detection area is larger, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detectors, in particular to a nuclear radiation detector composed of scintillating optical fibers. Background Technique

[0002] Scintillation detectors have developed rapidly and are the most widely used nuclear detectors in recent years. One of its core structures is the sensitive probe. The existing scintillation detectors have a small contact area and poor uniformity for liquid detection, thus affecting the detection efficiency. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a nuclear radiation detector composed of scintillating optical fibers, which can effectively solve the problems raised in the above background technique.

[0004] To solve the above problems, the technical solution adopted by the utility model is: a nuclear radiation detector composed of scintillating optical fibers, including an aviation plug, a circuit housing and a measuring tank. It is characterized in that the aviation plug is arranged on the top of the circuit housing; the measuring tank is arranged on the bottom surface of the circuit housing, and a scintillating optical fiber bundle is arranged inside the measuring tank; a photomultiplier tube socket and a photomultiplier tube are arranged inside the circuit housing; the photomultiplier tube socket is sleeved above the photomultiplier tube; the photomultiplier tube is connected with the scintillating optical fiber bundle, and the photomultiplier tube is located above the scintillating optical fiber bundle; the ends of the scintillating optical fiber bundle are distributed outward in an array.

[0005] As a further preferred scheme of the utility model, a tube housing cover is arranged on the top of the circuit housing; the aviation plug is located on the top surface of the tube housing cover; a buffer spring is arranged above the photomultiplier tube socket and connected with the tube housing cover; an aperture stop is arranged between the circuit housing and the tube housing cover.

[0006] As a further preferred scheme of the utility model, the tube housing cover is provided with a circle of shell cover pressing rings.

[0007] As a further preferred scheme of the utility model, the scintillating optical fiber bundle is sleeved with a fiber fixing lower ring; the upper part of the measuring tank is provided with a fiber fixing upper ring; the fiber fixing upper ring is threadedly connected with the fiber fixing lower ring, and a waterproof rubber ring is arranged between the fiber fixing upper ring and the fiber fixing lower ring.

[0008] As a further preferred scheme of the utility model, a water inlet hole and an overflow hole are arranged above the side wall of the measuring tank; a drain hole is arranged at the bottom of the measuring tank.

[0009] Compared with the prior art, the utility model provides a nuclear radiation detector composed of scintillating optical fibers, which has the following beneficial effects:

[0010] This utility model uses a fiber optic bundle array for detection. Water can flow into the gaps of the fiber optic array bundle, so the detection area is larger, thereby improving the detection efficiency. Description of the Drawings

[0011] Figure 1 Schematic structural diagram of this utility model;

[0012] Figure 2 Schematic diagram of the disassembled structure of this utility model;

[0013] Figure 3 Schematic cross-sectional view of the structure of this utility model;

[0014] Among them: 1. Aviation plug; 2. Circuit housing; 3. Overflow hole; 4. Water inlet hole; 5. Measuring tank; 6. Drain hole; 7. Light shielding ring; 8. Buffer spring; 9. Shell cover pressing ring; 10. Photomultiplier tube socket; 11. Tube shell cover; 12. Photomultiplier tube; 13. Upper fiber optic fixing ring; 14. Waterproof rubber ring; 15. Lower fiber optic fixing ring; 16. Scintillating fiber optic bundle. Specific Embodiments

[0015] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of this utility model, then such directional indications are only used to explain the relative positional relationship and movement conditions among components in a specific posture. If this specific posture changes, then such directional indications will also change accordingly.

[0016] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of this utility model, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features.

[0017] In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution where A and B are satisfied simultaneously.

[0018] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by this utility model.

[0019] Refer to Figures 1-3, the present utility model provides a nuclear radiation detector composed of scintillating optical fibers, including an aviation plug 1, a circuit housing 2, and a measuring tank 5. It is characterized in that the aviation plug 1 is arranged on the top of the circuit housing 2; the measuring tank 5 is arranged on the bottom surface of the circuit housing 2, and a scintillating optical fiber bundle 16 is arranged inside the measuring tank 5; a photomultiplier tube socket 10 and a photomultiplier tube 12 are arranged inside the circuit housing 2; the photomultiplier tube socket 10 is sleeved above the photomultiplier tube 12; the photomultiplier tube 12 is connected to the scintillating optical fiber bundle 16, and the photomultiplier tube 12 is located above the scintillating optical fiber bundle 16; the ends of the scintillating optical fiber bundle 16 are distributed outward in an array.

[0020] As a further preferred solution of the present utility model, a tube housing cover 11 is arranged on the top of the circuit housing 2; the aviation plug 1 is located on the top surface of the tube housing cover 11; a buffer spring 8 is arranged above the photomultiplier tube socket 10 and connected to the tube housing cover 11; a light-shielding ring 7 is arranged between the circuit housing 2 and the tube housing cover 11.

[0021] As a further preferred solution of the present utility model, the tube housing cover 11 is provided with a circle of shell cover pressing rings 9.

[0022] As a further preferred solution of the present utility model, the scintillating optical fiber bundle 16 is sleeved with a fiber fixing lower ring 15; an upper fiber fixing ring 13 is arranged on the upper part of the measuring tank 5; the upper fiber fixing ring 13 is threadedly connected to the fiber fixing lower ring 15, and a waterproof rubber ring 14 is arranged between the upper fiber fixing ring 13 and the fiber fixing lower ring 15 to prevent water flow from entering the inside of the circuit housing 2.

[0023] As a further preferred solution of the present utility model, a water inlet hole 4 and an overflow hole 3 are arranged above the side wall of the measuring tank 5 to facilitate the introduction of water flow for measurement; a drain hole 6 is arranged at the bottom of the measuring tank 5 to facilitate the pouring out of the water flow after the measurement is completed.

[0024] As a specific embodiment of the present utility model: After putting the scintillating optical fiber bundle 16 into the fiber fixing lower ring 15, screw on the upper fiber fixing ring 13, then put it into the measuring tank 5 and screw on the circuit housing 2 to compress the waterproof rubber ring 14 to achieve the waterproof effect. Evenly apply optical silicone grease on the end window surface of the photomultiplier tube 12, insert it into the photomultiplier tube socket 10, and then put the whole circuit board part into the circuit housing 2. After being clamped by the tube housing cover 11, screw on the shell cover pressing ring 9 and at the same time compress the light-shielding ring 7 to achieve the light-shielding effect. The ends of the optical fiber bundle 16 are distributed outward in an array, and array detection is adopted, so that the water flow can flow into the gaps of the optical fiber array bundle, so the detection area is larger.

[0025] As required, the above-described installation, setting, provision, or connection methods include, but are not limited to, installation, setting, or connection by means such as screws, riveting, welding, or socketing and fixing, and the installation, setting, or connection method is selected according to the working scenario requirements.

[0026] The above is only the preferred embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A nuclear radiation detector composed of scintillating optical fibers, comprising an aviation plug (1), a circuit housing (2) and a measuring tank (5), characterized in that, The aviation plug (1) is arranged on the top of the circuit housing (2); the measuring tank (5) is arranged on the bottom surface of the circuit housing (2), and a scintillating fiber bundle (16) is arranged inside the measuring tank (5); a photomultiplier tube socket (10) and a photomultiplier tube (12) are arranged inside the circuit housing (2); the photomultiplier tube socket (10) is sleeved above the photomultiplier tube (12); the photomultiplier tube (12) is connected to the scintillating fiber bundle (16), and the photomultiplier tube (12) is located above the scintillating fiber bundle (16); the end of the scintillating fiber bundle (16) is distributed in an arrayed and outwardly expanding manner.

2. The nuclear radiation detector composed of scintillating optical fibers according to claim 1, characterized in that A tube housing cover (11) is arranged on the top of the circuit housing (2); the aviation plug (1) is located on the top surface of the tube housing cover (11); a buffer spring (8) is arranged above the photomultiplier tube socket (10) and connected to the tube housing cover (11); a light-shielding ring (7) is arranged between the circuit housing (2) and the tube housing cover (11).

3. The nuclear radiation detector composed of scintillating optical fibers according to claim 2, characterized in that, The tube housing cover (11) is provided with a circle of shell cover pressing rings (9).

4. The nuclear radiation detector composed of scintillating optical fibers according to claim 1, characterized in that, The scintillating fiber bundle (16) is sleeved with a fiber fixing lower ring (15); a fiber fixing upper ring (13) is arranged at the upper part of the measuring tank (5); the fiber fixing upper ring (13) is threadedly connected to the fiber fixing lower ring (15), and a waterproof rubber ring (14) is arranged between the fiber fixing upper ring (13) and the fiber fixing lower ring (15).

5. The nuclear radiation detector composed of scintillating optical fibers according to claim 4, characterized in that, A water inlet hole (4) and an overflow hole (3) are arranged above the side wall of the measuring tank (5); a drain hole (6) is arranged at the bottom of the measuring tank (5).

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