CN104637564A - Attenuation type automatic multi-range gamma irradiation device - Google Patents
Attenuation type automatic multi-range gamma irradiation device Download PDFInfo
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- CN104637564A CN104637564A CN201310556422.2A CN201310556422A CN104637564A CN 104637564 A CN104637564 A CN 104637564A CN 201310556422 A CN201310556422 A CN 201310556422A CN 104637564 A CN104637564 A CN 104637564A
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- attenuator
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- multirange
- type automatic
- attenuation
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K5/00—Irradiation devices
- G21K5/04—Irradiation devices with beam-forming means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention belongs to the ionizing radiation quantity and radiation monitoring instrument calibration and verification technique and particularly relates to an attenuation type automatic multi-range gamma irradiation device. The attenuation type automatic multi-range gamma irradiation device comprises a source storage device on a stand. A radiation stop is formed in the source storage device and is further formed behind an automatic multi-range selector. The automatic multi-range selector comprises a plurality parallel attenuation slices different in thickness. The attenuation slices are connected with a pneumatic attenuation slice control mechanism which is connected with an industrial control computer or a manual controller. The attenuation type automatic multi-range gamma irradiation device has the advantages that calibration and testing of X, gamma dose (rate) instruments is achieved within the wide range, defects generated by the way of manually selecting the attenuation slices are overcome, and device reliability and radiation safety is accordingly improved.
Description
Technical field
The invention belongs to ionising radiation metering, radiation monitoring instrument calibrating and measuring technology, be specifically related to a kind of attenuation type automatic multirange gamma-radiation device.
Background technology
Common γ reference radiation irradiation unit by different activity radioactive source, source of bank savings device, change source apparatus, track, chassis etc. and form.By selecting the radioactive source of different activity, the distance changing radioactive source and be calibrated between instrument, can obtain the Reference radiation field of Different Dose Rates level.Fabricating yard needed for this kind of device is comparatively large, needs one group of radioactive source of different activity, needs to change source apparatus, need the even running of track, chassis and accurately locate, and the composition of package unit, structure and control system are more complicated.In addition, consider the impact of Scattering Factors, regulate the scope of radiation field dose rate level very limited by change radioactive source and the distance be calibrated between instrument, the radiation field of wide-range is provided, many different activity radioactive sources must be adopted, in today that radioactive source supervision is extremely strict, many management and safety problem will certainly be caused.The application of damped method can overcome more above-mentioned problems preferably, and not only radioactive source quantity greatly reduces, and eliminates and changes source apparatus, also decreases to the requirement of track positioning system.But manual mode selects attenuator combination to regulate the mode of Reference radiation field dose rate level, not only wastes time and energy, and also often there will be the mistake that some combinations are selected, also can produce certain impact to the repeatability of Reference radiation field in addition.
Summary of the invention
The object of the present invention is to provide a kind of attenuation type automatic multirange gamma-radiation device, the attenuator can automatically selected by a group is combined, and when single radioactive source, realizes automatically regulating of Reference radiation field dose rate level on a large scale.
Technical scheme of the present invention is as follows: a kind of attenuation type automatic multirange gamma-radiation device, comprise the source of bank savings device be arranged on support, described source of bank savings device is provided with irradiation diaphragm, automatic multirange selector switch is provided with in described irradiation diaphragm front, described automatic multirange selector switch comprises multiple attenuator with different-thickness arranged in parallel, each attenuator is connected with attenuator pneumatic control mechanism respectively, and attenuator pneumatic control mechanism connects industrial control computer or manual controller.
Further, attenuation type as above automatic multirange gamma-radiation device, wherein, below described source of bank savings device, be provided with source jacking gear, source jacking gear is connected with radioactive source; Described source jacking gear is source elevating control cylinder.
Further, attenuation type as above automatic multirange gamma-radiation device, wherein, described attenuator pneumatic control mechanism comprises the cylinder be connected with each attenuator respectively, and cylinder provides source of the gas by air compressor, and is connected with pilot relay.
Further, attenuation type as above automatic multirange gamma-radiation device, wherein, described attenuator is plumbous attenuator.
Beneficial effect of the present invention is as follows: attenuation type provided by the present invention automatic multirange gamma-radiation device, automatic multirange selector switch is adopted automatically to select the combination of attenuator, can within the scope of very wide dose rate, obtain the Reference radiation field of one group of Different Dose Rates level, without the need to the mobile position being calibrated instrument, just can realize the calibrating and measuring of X, γ dosage (rate) instrument within the scope of wide-range quickly and easily, overcome some drawbacks that manual mode selects attenuator, the reliability of device and radsafe be corresponding raising also.This device also can be arranged on transport vehicle platform, provides the field calibration ability of radiation protection dosage instrument.
Accompanying drawing explanation
Fig. 1 is the structural representation of attenuation type automatic multirange gamma-radiation device.
Embodiment
Below in conjunction with accompanying drawing and implementation process, the present invention is described in detail.
As shown in Figure 1, attenuation type automatic multirange gamma-radiation device comprises setting source of bank savings device 1 over the mount 10, and described source of bank savings device 1 is provided with and irradiates diaphragm 2, and radioactive source 9 is placed in source of bank savings device 1.Automatic multirange selector switch is provided with in described irradiation diaphragm 2 front, described automatic multirange selector switch comprises multiple attenuator 3,4,5,6 with different-thickness arranged in parallel, each attenuator 3,4,5,6 is connected with attenuator pneumatic control mechanism respectively, and attenuator pneumatic control mechanism connects industrial control computer or manual controller.Attenuator pneumatic control mechanism comprises the cylinder 8 be connected with each attenuator 3,4,5,6 respectively by web member 7, and cylinder provides source of the gas by air compressor, and is connected with pilot relay.Below described source of bank savings device 1, be provided with source jacking gear (source elevating control cylinder 11), source jacking gear is connected with radioactive source 9, for controlling the lifting of radioactive source.
The kind of radioactive source and activity select the dose rate scope of main energy range, dose rate scope and the calibration Reference radiation field of considering instrument to be calibrated; The Main Function of source of bank savings device realizes the good shielding to radioactive source, guarantees the safety of operating personnel; Source jacking gear is for realizing the conversion of radioactive source at storage location and irradiation position; Automatic multirange selector switch is mainly used in automatic selection and the setting of attenuator combination; Controller is for realizing the automatic control of whole device.
Installing space needed for attenuation type automatic multirange gamma-radiation device is less, only needs the radioactive source that an activity is maximum, in particular cases even can omit tracks positioned system at some.By automatically loading the plumbous attenuator of different-thickness, obtain the Reference radiation field of Different Dose Rates level.Due to compact conformation, can be arranged on vehicle transport platform, the field calibration detection capability of all kinds of dose monitoring instrument is provided.
The simple course of work of attenuation type automatic multirange gamma-radiation device: initial position, radioactive source storage is in source of bank savings device, and plumbous attenuator falls after rise and puts in place, blocks and irradiates hole.First the dose rate level for the Reference radiation field for calibrated meter is determined; Then select different plumbous attenuator combinations, unwanted plumbous attenuator is risen, leaves the beam visual field irradiated hole and formed; Finally radioactive source is raised up to irradiation position, starts irradiation and be calibrated instrument.After irradiation terminates, controller controls radioactive source and drops to storage location, and plumbous attenuator is all rolled back initial position.
Automatic multirange selector switch is made up of the attenuator of one group of different-thickness, source of the gas and corresponding pneumatic control mechanism.Operating personnel select the combination of different attenuator by controller or computing machine, and the quantity of plumbous attenuator can according to radioactive source activity, determine for the control ability of the dose rate variation range that reaches and atmospheric control.The size of plumbous attenuator is determined by the bore size of perforation hole and the installation site of plumbous attenuator, and in order to reduce the weight of plumbous attenuator, installation site is as far as possible near perforation hole.In the present embodiment, the thickness of plumbous attenuator 3,4,5,6 meets the designing requirement of to decay to the dose rate for loading radioactive source radiation field 2 times, 4 times, 10 times, 100 times or higher multiple, by selecting different attenuator combinations, realize 0 times-8000 times or higher decay of Reference radiation field dose rate, obtain the Reference radiation field of Different Dose Rates level, the range of more than 4 that are calibrated instrument can be covered, substantially can meet the needs of the calibrating and measuring of various types of radiation protection dosage instrument.
In the elevating control of radioactive source and automatically multirange selector switch, plumbous attenuator is selected and lifting has all been come by cylinder.Cylinder provides source of the gas by air compressor, by pilot relay, realizes the control to cylinder, for easy to use, all selects to exchange to control.The invention also achieves the double design function of control and Non-follow control automatically in addition, control system adopts industrial control computer and manual controller respectively, forms two-way independently control channel.By the conversion of automatic and manual operation switch, realize the conversion of control and Non-follow control automatically.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technology thereof, then the present invention is also intended to comprise these change and modification.
Claims (5)
1. an attenuation type automatic multirange gamma-radiation device, comprise the source of bank savings device (1) be arranged on support (10), described source of bank savings device (1) is provided with and irradiates diaphragm (2), it is characterized in that: be provided with automatic multirange selector switch in described irradiation diaphragm (2) front, described automatic multirange selector switch comprises multiple attenuator (3 with different-thickness arranged in parallel, 4, 5, 6), each attenuator (3, 4, 5, 6) be connected with attenuator pneumatic control mechanism respectively, attenuator pneumatic control mechanism connects industrial control computer or manual controller.
2. attenuation type automatic multirange gamma-radiation device as claimed in claim 1, is characterized in that: be provided with source jacking gear in described source of bank savings device (1) below, source jacking gear is connected with radioactive source (9).
3. attenuation type automatic multirange gamma-radiation device as claimed in claim 2, is characterized in that: described source jacking gear is source elevating control cylinder (11).
4. attenuation type automatic multirange gamma-radiation device as claimed in claim 1 or 2, it is characterized in that: described attenuator pneumatic control mechanism comprises the cylinder (8) be connected with each attenuator (3,4,5,6) respectively, cylinder provides source of the gas by air compressor, and is connected with pilot relay.
5. attenuation type automatic multirange gamma-radiation device as claimed in claim 1, is characterized in that: described attenuator (3,4,5,6) is plumbous attenuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310556422.2A CN104637564A (en) | 2013-11-11 | 2013-11-11 | Attenuation type automatic multi-range gamma irradiation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310556422.2A CN104637564A (en) | 2013-11-11 | 2013-11-11 | Attenuation type automatic multi-range gamma irradiation device |
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| CN104637564A true CN104637564A (en) | 2015-05-20 |
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| CN201310556422.2A Pending CN104637564A (en) | 2013-11-11 | 2013-11-11 | Attenuation type automatic multi-range gamma irradiation device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108572386A (en) * | 2017-03-07 | 2018-09-25 | 中国辐射防护研究院 | Device and its calibration method for the calibration of nuclear facilities liquid effluent γ monitors |
| CN108572388A (en) * | 2017-03-07 | 2018-09-25 | 中国辐射防护研究院 | A kind of device and method for the calibration of nuclear facilities liquid effluent γ monitors |
| CN113238279A (en) * | 2021-05-10 | 2021-08-10 | 中国辐射防护研究院 | Radiation device capable of generating single pulse gamma ray |
| CN114442140A (en) * | 2022-01-04 | 2022-05-06 | 成都理工大学 | Variable radiation field multipurpose irradiation calibration device and use method |
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| US5221842A (en) * | 1991-10-11 | 1993-06-22 | J. L. Shepherd & Assoc | Self-contained calibrators/irradiators for personal dosimeters |
| CN201955473U (en) * | 2010-12-16 | 2011-08-31 | 中国核动力研究设计院 | Multi-source gamma calibration device |
| CN103135119A (en) * | 2011-12-01 | 2013-06-05 | 中国辐射防护研究院 | Portable multi-range reference radiation device |
| CN103278838A (en) * | 2013-05-24 | 2013-09-04 | 四川中测辐射科技有限公司 | Protection level gamma ray air kerma standard device |
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2013
- 2013-11-11 CN CN201310556422.2A patent/CN104637564A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5221842A (en) * | 1991-10-11 | 1993-06-22 | J. L. Shepherd & Assoc | Self-contained calibrators/irradiators for personal dosimeters |
| CN201955473U (en) * | 2010-12-16 | 2011-08-31 | 中国核动力研究设计院 | Multi-source gamma calibration device |
| CN103135119A (en) * | 2011-12-01 | 2013-06-05 | 中国辐射防护研究院 | Portable multi-range reference radiation device |
| CN103278838A (en) * | 2013-05-24 | 2013-09-04 | 四川中测辐射科技有限公司 | Protection level gamma ray air kerma standard device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108572386A (en) * | 2017-03-07 | 2018-09-25 | 中国辐射防护研究院 | Device and its calibration method for the calibration of nuclear facilities liquid effluent γ monitors |
| CN108572388A (en) * | 2017-03-07 | 2018-09-25 | 中国辐射防护研究院 | A kind of device and method for the calibration of nuclear facilities liquid effluent γ monitors |
| CN108572386B (en) * | 2017-03-07 | 2022-04-19 | 中国辐射防护研究院 | Device and method for calibrating nuclear facility liquid effluent gamma monitor |
| CN108572388B (en) * | 2017-03-07 | 2022-04-19 | 中国辐射防护研究院 | Device and method for calibrating nuclear facility liquid effluent gamma monitor |
| CN113238279A (en) * | 2021-05-10 | 2021-08-10 | 中国辐射防护研究院 | Radiation device capable of generating single pulse gamma ray |
| CN113238279B (en) * | 2021-05-10 | 2023-05-12 | 中国辐射防护研究院 | Radiation device capable of generating single pulse gamma rays |
| CN114442140A (en) * | 2022-01-04 | 2022-05-06 | 成都理工大学 | Variable radiation field multipurpose irradiation calibration device and use method |
| CN114442140B (en) * | 2022-01-04 | 2022-10-14 | 成都理工大学 | Variable radiation field multipurpose irradiation calibration device and use method |
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Application publication date: 20150520 |