CN2591645Y - Gamma radioactive safe testing device - Google Patents
Gamma radioactive safe testing device Download PDFInfo
- Publication number
- CN2591645Y CN2591645Y CN 02289591 CN02289591U CN2591645Y CN 2591645 Y CN2591645 Y CN 2591645Y CN 02289591 CN02289591 CN 02289591 CN 02289591 U CN02289591 U CN 02289591U CN 2591645 Y CN2591645 Y CN 2591645Y
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- gamma
- safety detection
- detection device
- gamma activity
- activity safety
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Abstract
The utility model relates to a gamma radioactive safety detecting device, which belongs to the technical field of monitoring radioactivity, which mainly directionally baffles a NaI (Tl) scintillator for measuring gamma radioactivity so that only gamma radioactivity within the range of a certain solid angle at one side of the scintillator can be detected. In order to be applied to detecting gamma radioactive safety for public security departments at some public place of airports, stations, etc., a plurality of gamma radioactive probes are arranged in two side door pillars in a doorframe shape, and therefore, the gamma radioactive safety detecting device has better effects of orientation and concealment.
Description
One technical field
The utility model belongs to the radioactivity monitoring technical field, is specifically related to a kind of gamma activity safety detection device.
Two background technologies
For strengthening the public safety of machine poplar, station and some important venues and facilities, domestic have unit once to carry out the gamma activity intensity monitoring by NaI (T1) measurement mechanism is installed on these local security check passages, in time to detect passenger or its luggage and articles that illegally carry the gamma activity material privately rapidly, ensure public safety.This device is owing to lack specific shielding and just right buried body, thus the orientation effect that influence detects and the hidden effect of monitoring device.
Three summary of the invention
NaI (T1) gamma-ray measurement device generally partly is made up of probe and two of electronics equipments, probe partly comprises NaI (T1) scintillator and photomultiplier, the scintillation crystal of garden cylindricality (specification that 50 * 50 millimeters of 75 * 75 millimeters of φ or φ are often arranged) is quick to the γ photon Turin in certain energy and the distance range in 360 ° of solid angle scopes, therefore, if NaI (T1) scintillator of probe is not made baffle, when examining measurement device then and give the alarm to the gamma activity of certain intensity, the public security officer still is difficult to rapidly, find illegally to carry the suspicious people or the thing of radiomaterial exactly.The objective of the invention is to develop a kind of gamma activity pick-up unit, this device can confirm that the gamma activity of measuring is from people or thing through security check passage, and manages to be equipped with this device more hidden, is difficult for being found.
Embodiment of the present utility model is as follows:
A kind of gamma activity safety detection device comprises the probe be made up of NaI (T1) scintillator 1 and photomultiplier 2 partly, the electronics equipment of being made up of prime amplifier, main amplifier, differentiation device and the little processing of data etc. 3, and main frame 4 compositions.Wherein, outside NaI (T1) scintillator 1, be with a cask flask 5, this cask flask 5 is people, thing porch one side on the escape way of detected place, it is the gap of one 90 ° of radians, like this, except being detected by device through the people of Security Inspection Office, gamma activity that thing carries, the radioactivity conductively-closed jar 5 on other direction has masked.
This device is equipped with 2～4 cover probes, and reasonable disposition is in the support of making the doorframe shape respectively, and cable is drawn from support, receives and lays on the nigh main frame 4.
NaI (T1) scintillator 1 outer cask flask 5 can be made with lead, tungsten or depleted uranium, and the thickness of jar is 12mm.
To size is the scintillator 1 of 50 * 50 millimeters of φ, each probe from the ultimate range of people to be measured, logistics in half meter.
This device is to the gamma-rays sensitivity of energy at 50keV～3MeV, and its minimum sensibility reciprocal is to 8 microcuries
137The Cs radioactive source can be reported to the police.
Differentiation threshold in the electronics equipment 3 can be according to the horizontal adjustment of place to be measured background radioactivity.
The microprocessing unit that main frame 4 is made up of single-chip microcomputer 89C52, display and keyboard are formed, and the parameters such as channel number of alarm threshold value (generally getting the sample-out count value doubly greater than 2-3) and each probe are imported by keyboard in advance.
The advantage of this utility model is: the directional effect of detection is good, and the pick-up unit configuration is hidden, and product is checked and accepted on probation for relevant department.
Four description of drawings Fig. 1 gamma activity safety detection device principle schematic Fig. 2 gamma activity safety detection device NaI (T1) scintillator cask flask structural representation Fig. 3 safety door type gamma activity safety detection device configuration schematic diagram Fig. 4 channel-style gamma activity safety detection device configuration schematic diagram
Five embodiments
Embodiment 1
Fig. 3 is a safety door type gamma activity pick-up unit of making the doorframe shape, 4 gamma detectors are placed in correspondence position in the door pillar of both sides respectively, when the stream of people passes through from doorframe, no matter radioactive source conceals what position of the root of Dahurian angelica at human body, 4 probes all can measure radioactivity, the electric signal that this radioactivity produces is after the electronics equipment data processing unit is handled, deliver to main frame 4 by cable, display goes the rounds to demonstrate the radioactive intensity values that different probes record, when this value surpasses the alarm threshold value that is preset in the main frame 4, then report to the police.
Fig. 4 is a channel-style gamma activity pick-up unit of making the article of checking luggage, when the luggage and articles on the travelling belt pass through pick-up unit, is placed in 2 gamma ray probes in the travelling belt two side columns, carries out gamma activity simultaneously and measures.Like this, cooperate the dangerous goods X ray transmission detector that is placed on the passage, finish safety detection luggage and articles.
Claims (9)
1. gamma activity safety detection device, comprise the probe part of forming by NaI (T1) scintillator (1) and photomultiplier (2), form by electronics equipment (3) and main frame (4) that prime amplifier, main amplifier, differentiation device and data microprocessor etc. are formed; It is characterized in that being with a gamma ray shielding jar (5) outside NaI (T1) scintillator (1), gamma ray shielding jar (5) is people, thing porch on the security check passage of detected place, is the gap of-90 ° of radians.
2. gamma activity safety detection device according to claim 1, it is characterized in that: the probe of 2-4 the safety check apparatus except that main frame (4) and electronics equipment are partly, reasonable disposition is in the stent strut of making the doorframe shape, the tie cable line is drawn from support, receives and lays nigh main frame (4).
3. gamma activity safety detection device according to claim 1 is characterized in that: the available lead of cask flask (5), tungsten or depleted uranium are made.
4. according to claim 1 or 3 described gamma activity safety detection devices, it is characterized in that: the thickness of cask flask (5) is 12 millimeters.
5. gamma activity safety detection device according to claim 1 and 2 is characterized in that: to size is NaI (T1) scintillator (1) of 50 * 50 millimeters of φ, and the probe that is configured in the door pillar is less than half meter from the ultimate range of people to be measured, logistics.
6. gamma activity safety detection device according to claim 1 and 2 is characterized in that: pick-up unit is 50keV-3MeV to gamma-ray energy response scope.
7. gamma activity safety detection device according to claim 1 and 2 is characterized in that: pick-up unit to gamma-ray minimum sensibility reciprocal for to 8 microcuries
137The Cs radioactive source can be reported to the police.
8. gamma activity safety detection device according to claim 1 is characterized in that: the differentiation threshold of the differentiation device in the electronics equipment (3) is adjustable.
9. gamma activity safety detection device according to claim 1 is characterized in that: microprocessing unit, display and keyboard that main frame (4) is made up of single-chip microcomputer 89C52 are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02289591 CN2591645Y (en) | 2002-11-27 | 2002-11-27 | Gamma radioactive safe testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02289591 CN2591645Y (en) | 2002-11-27 | 2002-11-27 | Gamma radioactive safe testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2591645Y true CN2591645Y (en) | 2003-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02289591 Expired - Lifetime CN2591645Y (en) | 2002-11-27 | 2002-11-27 | Gamma radioactive safe testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2591645Y (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009000154A1 (en) * | 2007-06-21 | 2008-12-31 | Tsinghua University | Gamma ray detector |
| WO2009155779A1 (en) * | 2008-06-27 | 2009-12-30 | 同方威视技术股份有限公司 | Safety check portal |
| WO2009155737A1 (en) * | 2008-06-27 | 2009-12-30 | 同方威视技术股份有限公司 | Safety check portal for checking a narcotic/explosive and a nuclear/radioactive substance |
| CN101839129A (en) * | 2009-10-29 | 2010-09-22 | 中国石油化工股份有限公司 | Isotope well-to-well liquid flow propelling automatic monitor |
| CN102183778A (en) * | 2011-05-04 | 2011-09-14 | 深圳市贝斯达医疗器械有限公司 | Flashing probe |
| CN101634712B (en) * | 2009-09-02 | 2012-02-08 | 西北核技术研究所 | Pulse gamma radiation detector with low direct-radiation background |
| CN102540270A (en) * | 2011-12-14 | 2012-07-04 | 上海新漫传感技术研究发展有限公司 | Device for monitoring and identifying radioactive substances |
| CN102590851A (en) * | 2012-01-11 | 2012-07-18 | 上海新漫传感技术研究发展有限公司 | Radioactive monitoring system for pedestrians and baggage |
| CN102879797A (en) * | 2012-10-09 | 2013-01-16 | 贝谷科技股份有限公司 | Food and water radioactivity detection instrument |
| CN102944753A (en) * | 2012-11-12 | 2013-02-27 | 中国航天科技集团公司第五研究院第五一〇研究所 | Detection method of space high-energetic electrons and protons |
| CN103257365A (en) * | 2013-06-04 | 2013-08-21 | 安徽启路达光电科技有限公司 | Movable type safety inspection device based on X-ray |
| CN103344983A (en) * | 2013-06-19 | 2013-10-09 | 田志恒 | System and method for monitoring leakage of nuclear reactor steam generator |
| CN104076385A (en) * | 2014-07-04 | 2014-10-01 | 中国科学院高能物理研究所 | Gamma ray radiation quantity detection device and detection method thereof |
| CN104730563A (en) * | 2013-12-24 | 2015-06-24 | 上海新漫传感技术研究发展有限公司 | Passage type personnel radioactivity monitor |
| CN109799525A (en) * | 2019-03-20 | 2019-05-24 | 西南科技大学 | Multifunctional marine radioactive pollution dosage rate detection method and device |
| CN112596094A (en) * | 2020-12-04 | 2021-04-02 | 中广核久源（成都）科技有限公司 | Conveyer belt type radioactivity rapid detection device |
-
2002
- 2002-11-27 CN CN 02289591 patent/CN2591645Y/en not_active Expired - Lifetime
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009000154A1 (en) * | 2007-06-21 | 2008-12-31 | Tsinghua University | Gamma ray detector |
| WO2009155779A1 (en) * | 2008-06-27 | 2009-12-30 | 同方威视技术股份有限公司 | Safety check portal |
| WO2009155737A1 (en) * | 2008-06-27 | 2009-12-30 | 同方威视技术股份有限公司 | Safety check portal for checking a narcotic/explosive and a nuclear/radioactive substance |
| US8129691B2 (en) | 2008-06-27 | 2012-03-06 | Nuctech Company Limited | Security inspection door |
| CN101634712B (en) * | 2009-09-02 | 2012-02-08 | 西北核技术研究所 | Pulse gamma radiation detector with low direct-radiation background |
| CN101839129A (en) * | 2009-10-29 | 2010-09-22 | 中国石油化工股份有限公司 | Isotope well-to-well liquid flow propelling automatic monitor |
| CN101839129B (en) * | 2009-10-29 | 2013-05-01 | 中国石油化工股份有限公司 | Isotope well-to-well liquid flow propelling automatic monitor |
| CN102183778A (en) * | 2011-05-04 | 2011-09-14 | 深圳市贝斯达医疗器械有限公司 | Flashing probe |
| CN102540270A (en) * | 2011-12-14 | 2012-07-04 | 上海新漫传感技术研究发展有限公司 | Device for monitoring and identifying radioactive substances |
| CN102590851A (en) * | 2012-01-11 | 2012-07-18 | 上海新漫传感技术研究发展有限公司 | Radioactive monitoring system for pedestrians and baggage |
| CN102879797B (en) * | 2012-10-09 | 2014-08-13 | 贝谷科技股份有限公司 | Food and water radioactivity detection instrument |
| CN102879797A (en) * | 2012-10-09 | 2013-01-16 | 贝谷科技股份有限公司 | Food and water radioactivity detection instrument |
| CN102944753A (en) * | 2012-11-12 | 2013-02-27 | 中国航天科技集团公司第五研究院第五一〇研究所 | Detection method of space high-energetic electrons and protons |
| CN103257365A (en) * | 2013-06-04 | 2013-08-21 | 安徽启路达光电科技有限公司 | Movable type safety inspection device based on X-ray |
| CN103257365B (en) * | 2013-06-04 | 2015-08-12 | 安徽启路达光电科技有限公司 | A kind of portable safety check apparatus based on X ray |
| 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 |
| CN104730563A (en) * | 2013-12-24 | 2015-06-24 | 上海新漫传感技术研究发展有限公司 | Passage type personnel radioactivity monitor |
| CN104076385A (en) * | 2014-07-04 | 2014-10-01 | 中国科学院高能物理研究所 | Gamma ray radiation quantity detection device and detection method thereof |
| CN109799525A (en) * | 2019-03-20 | 2019-05-24 | 西南科技大学 | Multifunctional marine radioactive pollution dosage rate detection method and device |
| CN109799525B (en) * | 2019-03-20 | 2020-09-18 | 西南科技大学 | Multifunctional marine radioactive pollution dosage rate detection method and device |
| CN112596094A (en) * | 2020-12-04 | 2021-04-02 | 中广核久源（成都）科技有限公司 | Conveyer belt type radioactivity rapid detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121127 Granted publication date: 20031210 |