CN201130252Y - Combined gamma counter - Google Patents
Combined gamma counter Download PDFInfo
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- CN201130252Y CN201130252Y CNU2007203053078U CN200720305307U CN201130252Y CN 201130252 Y CN201130252 Y CN 201130252Y CN U2007203053078 U CNU2007203053078 U CN U2007203053078U CN 200720305307 U CN200720305307 U CN 200720305307U CN 201130252 Y CN201130252 Y CN 201130252Y
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- gamma counter
- combined type
- vitriol chamber
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Abstract
The utility model discloses a combined type Gamma counter, belonging to the technical field of Gamma-ray detection analysis apparatuses, which comprises a casing and a plurality of scintillation detectors fixed inside the casing; wherein, the flashing detector comprises a photomultiplier tube socket, a photomultiplier tube fixed on the photomultiplier tube socket, and a well type sodium iodide scintillator fixed on the photomultiplier tube; the scintillation detectors are fixed in a honeycomb dark lead chamber; the honeycomb dark lead chamber is a hollow prism comprising a sleeve type plastic honeycomb ceramic, a sleeve type lead honeycomb ceramic on the plastic honeycomb ceramic, and an upper lead cover on the lead honeycomb ceramic; the scintillation detectors are fixed in the hollow prism. The combined type Gamma counter has the advantages: the number of the detectors increases or decreases according to an even combination from 4 to 12; the combined type Gamma counter can avoid volume reduce and weight reduce caused by the discharging of the voltage dividers of the detectors when used under wet condition.
Description
Technical field
The utility model belongs to a kind of gamma-ray detection analytical instrument, is specifically related to a kind of combined type gamma counter.
Background technology
The combined type gamma counter is a kind of gamma-ray detection analytical instrument that is combined as required by many scintillation detectors.Scintillation detector is nuclear radiation detector scintillator (for the element of ionising radiation sensitivity) is direct and that photosensitive device (photomultiplier) optically-coupled is formed.On using, the combined type gamma counter is mainly used in medical domain, and medical radiommunoassay is measured, and carries out non-invasi examination, the detection of various diseases; The development of radiommunoassay reagent, production; New drug development; (sensitivity can reach 10 to the measurement of trace biological substance gamma-rays mark
-12G/ml) etc.Because the importance of its application is defined as one of 22 indispensable clinical departments of " front three " level hospital by the Ministry of Public Health.
The structure of existing gamma counter is that several scintillation detectors that metal shell is housed are fixed in the metal cabinet, it is important although it is widely used, but technical feature as the indispensable means-γ radio-immunity counter of Measurement and analysis, existing gamma counter is not fully up to expectations, and there are the following problems for it:
1. detector quantity can not need carry out increase and decrease by sample size, and promptly detector quantity is fixed;
2. the technical indicator of gamma counter does not reach the primary standard (GB GB/T10255-1996 " γ radio-immunity counter " stipulates that it divides three grades, and one-level requires the highest, and three grades require minimum) in the GB.The key technical indexes is as shown in table 1 below among the GB GB/T 10255-1996 " γ radio-immunity counter ":
The key technical indexes in table 1. GB
3. gamma counter uses under wet environment, and the high-voltage bleeder of detector is easy to generate " discharge " influences its operate as normal;
4. volume is big, and heavy, promptly takes up room and waste material, moves, puts, installs very inconvenient.
Summary of the invention
The purpose of this utility model is to provide a kind of combined type gamma counter, the detector quantity of this counter is pressed even number combination increase and decrease in 4～12 scopes, in the time of can avoiding under wet environment, using, the phenomenon of the high-voltage bleeder of detector " discharge ", volume, weight reduce.
Realize the technical scheme of the utility model purpose: a kind of combined type gamma counter, it comprises shell and fixing several scintillation detectors in the enclosure, scintillation detector comprises the photomultiplier transit tube socket, be installed in the photomultiplier on the photomultiplier transit tube socket and be installed in well type sodium iodide scintillator on the photomultiplier, wherein, scintillation detector is fixed in the cellular vitriol chamber darkroom, and cellular vitriol chamber darkroom comprises telescopic plastic honeycomb body, is positioned at the telescopic plumbous honeycomb ceramics on the plastic honeycomb body and covers the hollow cylinder that the plumbous loam cake on plumbous honeycomb ceramics is formed; Scintillation detector is fixed in the hollow cylinder.
Be provided with beryllium molybdenum alloy tube between described honeycomb wall and the well type sodium iodide scintillator.
Be provided with rubber blanket between described beryllium molybdenum alloy tube and the plumbous loam cake.
Described vitriol chamber darkroom is fixed in the vitriol chamber shell, the vitriol chamber shell for by base, be fixed on side plate on the chassis side, cover the casing that the upper cover plate on side plate forms, several through holes distribute on the base position relative with cover plate, be provided with an inside in each through hole the cellular vitriol chamber darkroom of scintillation detector is housed, the through hole of upper cover plate communicates with the well die cavity of well type sodium iodide scintillator, and the detector signal cable in the photomultiplier transit tube socket is drawn out to outside the vitriol chamber shell.
Described base is provided with the plurality of rows threaded hole, and side plate can be fixed on base to inside and outside mobile back by screw thread on base.
Described photomultiplier transit tube socket bottom is provided with the epoxy encapsulation body.
Be provided with rubber sheet gasket between described photomultiplier transit tube socket and the base.
Be provided with spring between described photomultiplier transit tube socket and the rubber sheet gasket, electric multiplier tube base is installed in the spring.
Integral body can be processed in the cellular vitriol chamber darkroom that scintillation detector is equipped with in described four or six inside, can be processed into and be installed in the vitriol chamber shell the box-like gamma counter of composition 4,6,8,10 and 12 detector set of specifications after the cellular vitriol chamber that scintillation detector is housed whole inside makes up.The beneficial effects of the utility model are: adopt the cellular combined mechanical structure of 4+6, any increase and decrease of realization 4,6,8,10,12 5 kind of specification detecting device quantity physical construction, the combined type that is installed in realization 4,6,8,10,12 5 kind of specification detecting device combined type gamma counter in the vitriol chamber darkroom changes.Adopt the scintillation detector of no shell type to make up with cellular vitriol chamber, change is design, processing and the assembly work of a large amount of components of machine of bringing of this kind scintillation detector shell in the past, has saved a large amount of raw material metals.Other has cancelled shell, does not promptly have the cellular scintillation detector of shell, and the external diameter of scintillation detector is reduced, and causes cellular vitriol chamber to reduce thereupon, and weight and volume also obviously reduces thereupon.Reduce the problem of volume and weight when having realized developing skill the primary standard of index regulation in the GB GB/T 10255-1996 " γ radio-immunity counter " thus.By mould can epoxy resin, be cured the insulation insulation package, solve in the past the scintillation detector voltage divider and directly be welded on the photomultiplier transit tube socket or to be welded in the split printed board spacing too little, wet environment produces the problem of discharge down.The technical indicator of combined type gamma counter of the present utility model is as shown in table 2 below
Description of drawings
Fig. 1 is a kind of vertical view of combined type gamma counter;
Fig. 2 is that a kind of A-A of combined type gamma counter is to cut-open view;
Fig. 3 is processed into the cellular vitriol chamber darkroom that scintillation detector is equipped with in four whole inside;
Fig. 4 is processed into the cellular vitriol chamber darkroom that scintillation detector is equipped with in six whole inside.
Among the figure: 1. base; 2. screw; 3. side plate; 4. plastic honeycomb body; 5. spring; 6. epoxy encapsulation body; 7. photomultiplier transit tube socket; 8. photomultiplier; 9. plumbous honeycomb ceramics; 10. beryllium molybdenum alloy tube; 11. well type sodium iodide scintillator; 12. plumbous loam cake; 13. screw; 14. rubber blanket; 15. upper cover plate; 16. rubber sheet gasket; 17. detector signal cable.
Embodiment;
The utility model is described in further detail below in conjunction with drawings and Examples.
As depicted in figs. 1 and 2, a kind of combined type gamma counter, it comprises shell and fixing several scintillation detectors in the enclosure, scintillation detector comprises photomultiplier transit tube socket 7, be installed in the photomultiplier 8 on the photomultiplier transit tube socket 7 and be installed in well type sodium iodide scintillator 11 on the photomultiplier 8, wherein, scintillation detector is fixed in the cellular vitriol chamber darkroom, and cellular vitriol chamber darkroom comprises telescopic plastic honeycomb body 4, is placed on the telescopic plumbous honeycomb ceramics 9 on the plastic honeycomb body 4 and covers the hollow cylinder that the plumbous loam cake 12 on plumbous honeycomb ceramics 9 is formed; Scintillation detector is welded in the hollow cylinder.
Be provided with beryllium molybdenum alloy tube 10 between honeycomb ceramics 9 sidewalls and the well type sodium iodide scintillator 11.Be provided with rubber blanket 14 between beryllium molybdenum alloy tube 10 and the plumbous loam cake 12.The vitriol chamber darkroom is welded in the vitriol chamber shell, the vitriol chamber shell is for by base 1, be fixed on side plate 3 on base 1 side, cover the casing that the upper cover plate 15 on side plate 3 forms by screw 2, pass through screw 13 between side plate 3 and the upper cover plate 15, several through holes distribute on the relative position of base 1 and cover plate 15, be provided with an inside in each through hole the cellular vitriol chamber darkroom of scintillation detector is housed, the through hole of upper cover plate 15 communicates with the well die cavity of well type sodium iodide scintillator 11, and the detector signal cable 17 in the photomultiplier transit tube socket 7 is drawn out to outside the vitriol chamber shell.Base 1 is provided with the plurality of rows threaded hole, and side plate 3 can be fixed on base 1 to inside and outside mobile back by screw thread 2 on base 1.Photomultiplier transit tube socket 7 bottoms are provided with epoxy encapsulation body 6.Be provided with rubber sheet gasket 16 between photomultiplier transit tube socket 7 and the base 1.Be provided with spring 5 between photomultiplier transit tube socket 7 and the rubber sheet gasket 16, electric multiplier tube base 7 is installed in the spring 5.
As shown in Figure 3, be installed in the vitriol chamber shell after integral body is processed in the cellular vitriol chamber darkroom that scintillation detector is equipped with in four inside, form the box-like gamma counter of 4 detector set of specifications.As shown in Figure 4, be installed in the vitriol chamber shell after integral body is processed in the cellular vitriol chamber darkroom that scintillation detector is equipped with in six inside, form the box-like gamma counter of 6 detector set of specifications.
Four inside as shown in Figure 3 are equipped with are installed in the vitriol chamber shell after the cellular vitriol chamber darkroom combination of scintillation detector is equipped with in the cellular vitriol chamber darkroom of scintillation detector and six inside as shown in Figure 4, form the box-like gamma counter of 10 detector set of specifications.
Be installed in the vitriol chamber shell after two six inside as shown in Figure 4 being equipped with the cellular vitriol chamber darkroom combination of scintillation detector, form the box-like gamma counter of 12 detector set of specifications.。
The photomultiplier diameter of present embodiment
Base is not more than
On the area of a circle of such diameter, needing 13 resistors and 4 capacitors in the welding, its gap well imagine that for a short time moreover, bleeder circuit also will insert the high-voltage power supply of 700～1500v, under wet environment, can produce " discharge " phenomenon inevitably.Even adopt split printed board structure, because the diameter area does not increase, not only problem does not thoroughly solve, and has also increased the length of scintillation detector, causes volume to increase.And adopt mould can epoxy resin, be cured the problem that insulation insulation package way has thoroughly solved the detector discharge.
During the concrete a kind of combined type gamma counter that uses that the utility model provides, the test tube that serum is housed is placed in the well die cavity of well type sodium iodide scintillator 11, serum is carried out radiommunoassay.
Claims (9)
1. combined type gamma counter, it comprises shell and fixing several scintillation detectors in the enclosure, scintillation detector comprises photomultiplier transit tube socket (7), be installed in the photomultiplier (8) on the photomultiplier transit tube socket (7) and be installed in well type sodium iodide scintillator (11) on the photomultiplier (8), it is characterized in that: scintillation detector is fixed in the cellular vitriol chamber darkroom, and cellular vitriol chamber darkroom comprises telescopic plastic honeycomb body (4), be positioned at the telescopic plumbous honeycomb ceramics (9) on the plastic honeycomb body (4) and cover the hollow cylinder that the plumbous loam cake (12) on plumbous honeycomb ceramics (9) is formed; Scintillation detector is fixed in the hollow cylinder.
2. a kind of combined type gamma counter according to claim 1 is characterized in that: be provided with beryllium molybdenum alloy tube (10) between described honeycomb ceramics (9) sidewall and the well type sodium iodide scintillator (11).
3. a kind of combined type gamma counter according to claim 2 is characterized in that: be provided with rubber blanket (14) between described beryllium molybdenum alloy tube (10) and the plumbous loam cake (12).
4. a kind of combined type gamma counter according to claim 1, it is characterized in that: described vitriol chamber darkroom is fixed in the vitriol chamber shell, the vitriol chamber shell is by base (1), be fixed on the side plate (3) on base (1) side, cover the casing that the upper cover plate (15) on side plate (3) forms, several through holes distribute on base (1) position relative with cover plate (15), be provided with an inside in each through hole the cellular vitriol chamber darkroom of scintillation detector is housed, the through hole of upper cover plate (15) communicates with the well die cavity of well type sodium iodide scintillator (11), and the detector signal cable (17) in the photomultiplier transit tube socket (7) is drawn out to outside the vitriol chamber shell.
5. a kind of combined type gamma counter according to claim 4 is characterized in that: described base (1) is provided with the plurality of rows threaded hole, and side plate (3) can be gone up to inside and outside mobile back at base (1) and be fixed on base (1) by screw thread.
6. a kind of combined type gamma counter according to claim 1 is characterized in that: described photomultiplier transit tube socket (7) bottom is provided with epoxy encapsulation body (6).
7. according to claim 1 or 4 described a kind of combined type gamma counters, it is characterized in that: be provided with rubber sheet gasket (16) between described epoxy encapsulation body (6) and the base (1).
8. a kind of combined type gamma counter according to claim 7 is characterized in that: be provided with spring (5) between described photomultiplier transit tube socket (7) and the rubber sheet gasket (16), photomultiplier transit tube socket (7) is installed in the spring (5).
9. a kind of combined type gamma counter according to claim 4, it is characterized in that: integral body can be processed in the cellular vitriol chamber darkroom that scintillation detector is equipped with in described four or six inside, can be processed into and be installed in the vitriol chamber shell the box-like gamma counter of composition 4,6,8,10 and 12 detector set of specifications after the cellular vitriol chamber that scintillation detector is housed whole inside makes up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203053078U CN201130252Y (en) | 2007-11-30 | 2007-11-30 | Combined gamma counter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203053078U CN201130252Y (en) | 2007-11-30 | 2007-11-30 | Combined gamma counter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201130252Y true CN201130252Y (en) | 2008-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203053078U Expired - Lifetime CN201130252Y (en) | 2007-11-30 | 2007-11-30 | Combined gamma counter |
Country Status (1)
| Country | Link |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581788B (en) * | 2009-07-03 | 2012-02-22 | 中国原子能科学研究院 | Gas scintillation proportional counter |
| CN102365561A (en) * | 2009-04-01 | 2012-02-29 | 株式会社德山 | Radiographic image detector |
| CN103344983A (en) * | 2013-06-19 | 2013-10-09 | 田志恒 | System and method for monitoring leakage of nuclear reactor steam generator |
| CN105353403A (en) * | 2015-11-26 | 2016-02-24 | 天华化工机械及自动化研究设计院有限公司 | Fixing device for scintillator and multiplier tube of isotope gauge |
| CN107643412A (en) * | 2017-08-29 | 2018-01-30 | 天津派普大业仪器科技有限公司 | Micro-fluidic radio-immunity interpretoscope and its interpretation method |
-
2007
- 2007-11-30 CN CNU2007203053078U patent/CN201130252Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102365561A (en) * | 2009-04-01 | 2012-02-29 | 株式会社德山 | Radiographic image detector |
| CN101581788B (en) * | 2009-07-03 | 2012-02-22 | 中国原子能科学研究院 | Gas scintillation proportional counter |
| CN103344983A (en) * | 2013-06-19 | 2013-10-09 | 田志恒 | System and method for monitoring leakage of nuclear reactor steam generator |
| CN103344983B (en) * | 2013-06-19 | 2015-11-25 | 田志恒 | nuclear reactor steam generator leakage monitoring system and method |
| CN105353403A (en) * | 2015-11-26 | 2016-02-24 | 天华化工机械及自动化研究设计院有限公司 | Fixing device for scintillator and multiplier tube of isotope gauge |
| CN107643412A (en) * | 2017-08-29 | 2018-01-30 | 天津派普大业仪器科技有限公司 | Micro-fluidic radio-immunity interpretoscope and its interpretation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA NUCLEAR CONTROL SYSTEM ENGINEERING CO., LTD. Free format text: FORMER OWNER: CNNC (BEIJING) NUCLEAR INSTRUMENT FACTORY Effective date: 20150529 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150529 Address after: 100176 Hongda South Road, 3, Beijing economic and Technological Development Zone Patentee after: Center control systems engineering (CSE) company limited Address before: 100176 3 Hongda South Road, Yizhuang economic and Technological Development Zone, Beijing Patentee before: CNNC Beijing Nuclear Instrument Factory |
|
| CX01 | Expiry of patent term |
Granted publication date: 20081008 |