CN2493944Y - High-sensitivity game ray point detector - Google Patents
High-sensitivity game ray point detector Download PDFInfo
- Publication number
- CN2493944Y CN2493944Y CN 01262568 CN01262568U CN2493944Y CN 2493944 Y CN2493944 Y CN 2493944Y CN 01262568 CN01262568 CN 01262568 CN 01262568 U CN01262568 U CN 01262568U CN 2493944 Y CN2493944 Y CN 2493944Y
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- CN
- China
- Prior art keywords
- crystal
- nai
- window
- double
- sensitivity
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- Expired - Fee Related
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Abstract
A high-sensitivity Gamma ray point detecting device is a PTA plant high-sensitivity Gamma ray detector, an electromagnetic shielding layer is alongside provided with a NaI(TL) crystal and a NaI(TL) double-window crystal, an optical coupling is arranged between the NaI(TL) crystal and the NaI(TL) double-window crystal, the other side of the NaI(TL) double-window crystal is provided with a photomultiplier, a shield locates on the external side of the NaI(TL) crystal and the NaI(TL) double-window crystal, one side of the shield is provided with a window. The shield comprises a shield body and a top cover, the top cover and the shield body is linked by a bolt, the electromagnetic shielding layer is made of permalloy.
Description
One, technical field
The utility model is a kind of PTA device high sensitivity r ray point probe, belongs to the special-purpose detector technology of PTA device field.
Two, background technology
It is the point probe that 0.5～2.7 μ Sv/h gamma-rays (hard ray) produces 300 pulses (cps) that former PTA device adopts sensitivity.Use this type of detection system to carry out the gamma-rays level-sensing device of level gauging in conjunction with the cobalt rod, the source of penetrating is generally 5.26 (this is the economical Design index) tenure of use.
Three, summary of the invention
1. goal of the invention
Goal of the invention of the present utility model provides a kind of high sensitivity gamma-rays point sniffer of highly sensitive, long service life.
2. technical scheme
High sensitivity gamma-rays point sniffer of the present utility model is made up of shell, crystal and photomultiplier, in electro-magnetic screen layer, be provided with NaI (TL) crystal, NaI (TL) double window crystal side by side, between NaI (TL) crystal and NaI (TL) double window crystal, be provided with the optocoupler mixture, opposite side at NaI (TL) double window crystal is provided with photomultiplier, radome is positioned at the outside of NaI (TL) crystal and NaI (TL) double window crystal, is provided with a window in a side of radome.Radome is made up of cover body and loam cake, and loam cake is connected with screw with cover body.Electro-magnetic screen layer by glass not alloy make.
3. technique effect
High sensitivity gamma-rays point probe of the present utility model adds special double window 50 * 50～102 NaI (TL) crystal on the basis of former gamma detector 50 * 50NaI (TL) crystal, increased effective detection volume.Sensitivity is that 0.2～0.25 μ Sv/h gamma-rays (hard ray) produces 300 pulses (cps).Adopt this detection system can be under the situation that cobalt rod activity is equal to former detection system comparison, the source of penetrating extends to 10.5～22 years by 5.26 tenure of use.Be used for the source radiation activity of penetrating that industrial x-ray level-sensing device design aspect can reduce a times at least, reduce on-the-spot ray contamination significantly.
Four, description of drawings
Fig. 1 is a general structure synoptic diagram of the present utility model.Radome 1, cover body 11, loam cake 12, window 111, crystal 2, optocoupler mixture 3, double window crystal 4, electro-magnetic screen layer 5, photomultiplier 6, support 7 are wherein arranged.
Five, embodiment
Electro-magnetic screen layer 5 be one with the glass hollow cylindrical housing made of alloy not, be provided with 50 * 50 NaI (TL) crystal 2 at this electro-magnetic screen layer Inner Front End, be provided with a special NaI (TL) double window crystal 4 on the next door of this crystal, its size is 50 * 50～102, between two crystal, be provided with optocoupler mixture 3, opposite side at NaI (TL) double window crystal is provided with photomultiplier 6, and the electro-magnetic screen layer that NaI (TL) crystal and NaI (TL) double window crystal and photomultiplier tube will be housed then is installed in the front end in the support 7.Be provided with a radome 1 in the support at the position that NaI (TL) crystal and NaI (TL) double window crystal the are housed outside, this radome is made up of cover body 11 and loam cake 12, has a window 111 in a side of cover body, as the detection window.Just can realize the utility model according to the above.
Claims (3)
1. high sensitivity r ray point sniffer, by shell, NaI (TL) crystal, photomultiplier is formed, it is characterized in that in electro-magnetic screen layer (5), being provided with side by side NaI (TL) crystal (2), NaI (TL) double window crystal (4), between NaI (TL) crystal (2) and NaI (TL) double window crystal (4), be provided with optocoupler mixture (3), opposite side at NaI (TL) double window crystal (4) is provided with photomultiplier (6), radome (1) is positioned at the outside of NaI (TL) crystal (2) and NaI (TL) double window crystal (4), is provided with a window (111) in a side of radome (1).
2. high sensitivity r ray point sniffer according to claim 1 is characterized in that radome (1) is made up of cover body (11) and loam cake (12), and loam cake (12) is connected with screw with cover body (11).
3. high sensitivity r ray point sniffer according to claim 1 and 2, it is characterized in that electro-magnetic screen layer (5) by glass not alloy make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01262568 CN2493944Y (en) | 2001-09-06 | 2001-09-06 | High-sensitivity game ray point detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01262568 CN2493944Y (en) | 2001-09-06 | 2001-09-06 | High-sensitivity game ray point detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2493944Y true CN2493944Y (en) | 2002-05-29 |
Family
ID=33670288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01262568 Expired - Fee Related CN2493944Y (en) | 2001-09-06 | 2001-09-06 | High-sensitivity game ray point detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2493944Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007051396A1 (en) * | 2005-11-04 | 2007-05-10 | Hong Jiang | A molten steel level measuring instrument with a long scintillator |
| CN101957226A (en) * | 2010-09-29 | 2011-01-26 | 上海辉博自动化仪表有限公司 | Passive nuclear material level measurement device |
| CN102625907A (en) * | 2009-08-17 | 2012-08-01 | 松下电器产业株式会社 | Infrared sensor |
| CN103344983A (en) * | 2013-06-19 | 2013-10-09 | 田志恒 | System and method for monitoring leakage of nuclear reactor steam generator |
| CN103424761A (en) * | 2013-07-29 | 2013-12-04 | 中国原子能科学研究院 | Nuclear energy level service life measuring device |
| CN103472545A (en) * | 2013-09-09 | 2013-12-25 | 南京华东电子光电科技有限责任公司 | Optical coupling method of photoelectric detector |
| CN104390677A (en) * | 2014-11-08 | 2015-03-04 | 胡桂标 | Background radiation correction measurement method and system of passive nuclear material level gauge |
-
2001
- 2001-09-06 CN CN 01262568 patent/CN2493944Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007051396A1 (en) * | 2005-11-04 | 2007-05-10 | Hong Jiang | A molten steel level measuring instrument with a long scintillator |
| CN102625907A (en) * | 2009-08-17 | 2012-08-01 | 松下电器产业株式会社 | Infrared sensor |
| CN102625907B (en) * | 2009-08-17 | 2014-09-03 | 松下电器产业株式会社 | Infrared sensor |
| CN101957226A (en) * | 2010-09-29 | 2011-01-26 | 上海辉博自动化仪表有限公司 | Passive nuclear material level measurement device |
| CN101957226B (en) * | 2010-09-29 | 2012-09-19 | 上海辉博自动化仪表有限公司 | Passive nuclear material level measurement device |
| 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 |
| CN103424761B (en) * | 2013-07-29 | 2015-06-17 | 中国原子能科学研究院 | Nuclear energy level service life measuring device |
| CN103424761A (en) * | 2013-07-29 | 2013-12-04 | 中国原子能科学研究院 | Nuclear energy level service life measuring device |
| CN103472545A (en) * | 2013-09-09 | 2013-12-25 | 南京华东电子光电科技有限责任公司 | Optical coupling method of photoelectric detector |
| CN103472545B (en) * | 2013-09-09 | 2015-05-20 | 南京华东电子光电科技有限责任公司 | Optical coupling method of photoelectric detector |
| CN104390677A (en) * | 2014-11-08 | 2015-03-04 | 胡桂标 | Background radiation correction measurement method and system of passive nuclear material level gauge |
| CN104390677B (en) * | 2014-11-08 | 2018-03-13 | 胡桂标 | The background radiation amendment measuring method and its system of passive nuclear level sensing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SINOPEC YANGZI PETROCHEMICAL CO. Free format text: FORMER NAME OR ADDRESS: YANGZI PETROCHEMICAL CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: No. 777, Xinhua Road, Dachang District, Jiangsu, Nanjing Province, 210048 Patentee after: Sinopec Yangzi Petrochemical Company Ltd. Address before: No. 777, Xinhua Road, Dachang District, Jiangsu, Nanjing Province, 210048 Patentee before: Yangtze Petrochemical Industry Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020529 Termination date: 20100906 |