CN214427625U - Novel electronic counting detector - Google Patents
Novel electronic counting detector Download PDFInfo
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- CN214427625U CN214427625U CN202023303420.7U CN202023303420U CN214427625U CN 214427625 U CN214427625 U CN 214427625U CN 202023303420 U CN202023303420 U CN 202023303420U CN 214427625 U CN214427625 U CN 214427625U
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- shielding
- focusing lens
- light guide
- scintillator
- shielding pipe
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Abstract
The utility model relates to a novel electron count detector, including scintillator, focusing lens, light guide clamping ring, silicon photomultiplier, signal acquisition unit, shielding pipe, shielding layer and signal processing unit, shielding layer and focusing lens are located inside shielding pipe one side, and the scintillator is located the shielding pipe between shielding layer and the focusing lens, and one side and shielding layer coupling, and the opposite side is coupled with focusing lens, light guide clamping ring is located the shielding pipe front end that focusing lens kept away from scintillator one side, and silicon photomultiplier welded fastening is on the signal acquisition unit, the signal acquisition unit is located the shielding pipe rear end that light guide clamping ring one side was kept away from to silicon photomultiplier, and the signal processing unit is located the shielding pipe outside to pass the shielding pipe through the cable and link to each other with the signal acquisition unit. Compared with the prior art, the utility model the advantage lies in: the electronic current signal can be detected quickly and accurately, the design cost is low, and the working efficiency is high.
Description
Technical Field
The utility model relates to a radioactivity detection sample thief technical field, in particular to novel electron count detector.
Background
An electronic counting detector is an instrument which converts radiation energy into optical energy and then converts the optical energy into electric energy for measurement, and generally comprises a scintillator and a photoelectric device, wherein nuclear radiation particles interact with the scintillator, the scintillator converts the energy deposited in the radiation particles into visible light or near visible light (called scintillation light) to be radiated, and the photoelectric detector detects the scintillation light and converts the scintillation light into an electric signal to be output, so that the nuclear radiation detection is finally realized. The existing electronic counting detector mainly collects weak light signals through a photomultiplier tube, and is high in design cost. The precision and sensitivity of a general detector using a silicon photomultiplier are not high enough, the stability is not good enough, and the resolution ratio is low, so that the working efficiency of an electronic counting detector is not high.
SUMMERY OF THE UTILITY MODEL
Not enough to the above among the prior art, the utility model provides a novel electronic counting detector, its is rational in infrastructure, and is with low costs, and the accuracy is high.
In order to achieve the above object, the utility model adopts the following technical scheme: a novel electronic counting detector comprises a scintillator, a focusing lens, a light guide pressing ring, a silicon photomultiplier, a signal acquisition unit, a shielding tube front end, a shielding tube rear end, a shielding layer, a sealing ring and a signal processing unit, wherein the shielding tube front end and the shielding tube rear end are connected through threads, the shielding layer and the focusing lens are fixed inside one side, away from the shielding tube rear end, of the shielding tube front end through the sealing ring in a sealing manner, the scintillator is positioned in the shielding tube front end between the shielding layer and the focusing lens, one side of the scintillator is coupled with the shielding layer, the other side of the scintillator is coupled with the focusing lens, the light guide pressing ring is positioned inside the shielding tube front end, away from one side of the scintillator, of the focusing lens, the light guide pressing ring is connected with the inner wall of the shielding tube front end through threads, the silicon photomultiplier is welded and fixed on the signal acquisition unit and faces the light guide pressing ring, the signal acquisition unit is positioned in the shielding tube rear end, away from one side of the light guide pressing ring, of the silicon photomultiplier, and the signal processing unit is positioned outside the rear end of the shielding pipe and is connected with the signal acquisition unit through a cable.
As an improvement: the shielding layer is made of glass or mica, an aluminized reflecting layer is arranged on a plane on one side, away from the scintillator, of the shielding layer, and the aluminized reflecting layer is of a completely light-tight structure.
As an improvement: the light guide pressing ring is of an annular structure or a conical structure, and a chromium plating reflecting layer is arranged on the surface of the light guide pressing ring.
As an improvement: the focusing lens is of a plano-convex focusing lens structure, the convex surface faces the rear end of the shielding tube, and the shielding layer, the scintillator and the focusing lens are coupled through optical silicone grease.
Compared with the prior art, the utility model the advantage lies in:
1. the utility model collects weak signals through the silicon photomultiplier, replaces the photomultiplier, and has low design cost and strong operation stability;
2. the shielding layer of the utility model adopts aluminized quartz glass, thus solving the problems that the shielding layer is easy to pollute and deform to influence the measurement accuracy;
3. the utility model adopts the converging light guide design of the focusing lens and the chrome-plated light guide aperture, thereby greatly improving the effective convergence of light signals and improving the lower detection limit and accuracy of the detector;
4. the utility model discloses simple structure, the practicality is strong.
Drawings
Fig. 1 is a schematic structural view of an annular photoconductive clamping ring of a novel electronic counting detector of the present invention;
fig. 2 is a schematic structural view of a tapered photoconductive clamping ring of the novel electronic counting detector of the present invention;
reference symbol comparison table:
11-scintillator, 12-focusing lens, 13-photoconductive pressing ring, 14-silicon photomultiplier, 15-signal acquisition unit, 16-shielding tube front end, 17-shielding tube rear end, 18-shielding layer, 19, sealing ring and 20-signal processing unit.
Detailed Description
The following describes the present invention with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, a novel electron counting detector comprises a scintillator 11, a focusing lens 12, a light guide pressing ring 13, a silicon photomultiplier 14, a signal acquisition unit 15, a shielding tube front end 16, a shielding tube rear end 17, a shielding layer 18, a sealing ring 19 and a signal processing unit 20, wherein the shielding tube front end 16 and the shielding tube rear end 17 are connected through a screw thread, the shielding layer 18 and the focusing lens 12 are fixed in the shielding tube front end 16 through the sealing ring 19 in a sealing manner, far from the shielding tube rear end 17, the scintillator 11 is positioned in the shielding tube front end 16 between the shielding layer 18 and the focusing lens 12, one side of the scintillator is coupled with the shielding layer 18, the other side of the scintillator is coupled with the focusing lens 12, the light guide pressing ring 13 is positioned in the shielding tube front end 16, far from the scintillator 11, the light guide pressing ring 13 is connected with the inner wall of the shielding tube front end 16 through a screw thread, the silicon photomultiplier 14 is fixed on the signal acquisition unit 15 in a welding mode, the direction of the silicon photomultiplier faces the light guide pressing ring 13, the signal acquisition unit 15 is located in the shielding tube rear end 17 of the silicon photomultiplier 14 on the side far away from the light guide pressing ring 13 and is fixed on the end face of the light guide pressing ring 13 in a crimping mode through threaded connection of the shielding tube front end 16 and the shielding tube rear end 17, and the signal processing unit 20 is located outside the shielding tube rear end 17 and is connected with the signal acquisition unit 15 through a cable.
The shielding layer 18 is made of glass or mica, an aluminized reflecting layer is arranged on a plane of the shielding layer 18 far away from the scintillator 11, and the aluminized reflecting layer is of a completely light-tight structure, so that the effects of shading and reflecting convergence are realized.
The optical guide pressing ring 13 is of an annular structure (as shown in fig. 1) or a conical structure (as shown in fig. 2), and the surface of the optical guide pressing ring 13 is provided with a chromium coating, so that the surface is highly reflective, and the reflection and convergence effect on optical signals is realized.
The focusing lens 12 is a plano-convex focusing lens structure, the convex surface faces the rear end 17 of the shielding tube, and the shielding layer 18, the scintillator 11 and the focusing lens 12 are coupled through optical silicone grease.
In the present invention, one end of the scintillator 11 is coupled to the shielding layer 18, and the other end is coupled to the focusing lens 12. The focusing lens 12 and the light guide clamping ring 13 allow more light to be transmitted to the photosensitive surface of the silicon photomultiplier 14. One end of the rear end 17 of the shielding pipe is provided with an opening for passing a wire, and the signal acquisition unit 15 is connected with the signal processing unit 20 through a cable. After the signal is collected and shaped, the signal is finally output through the signal processing unit 20.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. The utility model provides a novel electron count detector, includes scintillator (11), focusing lens (12), light guide clamping ring (13), silicon photomultiplier (14), signal acquisition unit (15), shielding pipe front end (16), shielding pipe rear end (17), shielding layer (18), sealing washer (19) and signal processing unit (20), its characterized in that: shielding pipe front end (16) and shielding pipe rear end (17) pass through threaded connection, shielding layer (18) and focusing lens (12) are fixed in shielding pipe front end (16) through sealing washer (19) seal and are kept away from inside shielding pipe rear end (17) one side, scintillator (11) are located shielding pipe front end (16) between shielding layer (18) and focusing lens (12), and one side and shielding layer (18) coupling, and the opposite side is coupled with focusing lens (12), light guide clamping ring (13) are located focusing lens (12) and keep away from inside shielding pipe front end (16) of scintillator (11) one side, light guide clamping ring (13) are connected with shielding pipe front end (16) inner wall screw thread through the screw thread, silicon photomultiplier (14) welded fastening is on signal acquisition unit (15) to direction light guide clamping ring (13), signal acquisition unit (15) are located silicon photomultiplier (14) and keep away from the shielding pipe of clamping ring (13) one side The rear end (17) is internally fixed on the end surface of the optical guide pressing ring (13) through the threaded connection and crimping of the front end (16) and the rear end (17) of the shielding tube, and the signal processing unit (20) is positioned outside the rear end (17) of the shielding tube and is connected with the signal acquisition unit (15) through a cable.
2. A novel electronic count detector as claimed in claim 1, wherein: the shielding layer (18) is made of glass or mica, an aluminized reflecting layer is arranged on a plane on one side, away from the scintillator (11), of the shielding layer (18), and the aluminized reflecting layer is of a completely light-tight structure.
3. A novel electronic count detector as claimed in claim 1, wherein: the light guide pressing ring (13) is of an annular structure or a conical structure, and a chromium plating reflecting layer is arranged on the surface of the light guide pressing ring (13).
4. A novel electronic count detector as claimed in claim 1, wherein: focusing lens (12) are plano-convex focusing lens structure, and the convex surface is towards shielding pipe rear end (17), shielding layer (18), scintillator (11) and focusing lens (12) couple through optics silicone grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023303420.7U CN214427625U (en) | 2020-12-31 | 2020-12-31 | Novel electronic counting detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023303420.7U CN214427625U (en) | 2020-12-31 | 2020-12-31 | Novel electronic counting detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214427625U true CN214427625U (en) | 2021-10-19 |
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ID=78054380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023303420.7U Active CN214427625U (en) | 2020-12-31 | 2020-12-31 | Novel electronic counting detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214427625U (en) |
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2020
- 2020-12-31 CN CN202023303420.7U patent/CN214427625U/en active Active
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