CN202494652U - Transmission source collimation shield - Google Patents
Transmission source collimation shield Download PDFInfo
- Publication number
- CN202494652U CN202494652U CN2012200940437U CN201220094043U CN202494652U CN 202494652 U CN202494652 U CN 202494652U CN 2012200940437 U CN2012200940437 U CN 2012200940437U CN 201220094043 U CN201220094043 U CN 201220094043U CN 202494652 U CN202494652 U CN 202494652U
- Authority
- CN
- China
- Prior art keywords
- transmission source
- shield
- chamber
- stored
- shielding device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 62
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 229910000863 Ferronickel Inorganic materials 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical group [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- 239000010937 tungsten Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000004587 chromatography analysis Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000002901 radioactive waste Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The utility model discloses a transmission source collimation shield which comprises a transmission source storage chamber, a collimator, a shield and a stepping motor. The transmission source storage chamber is arranged in the shield and provided with a transmission hole, and capable of rotating in the shield under the driving of the stepping motor. In a rotating process, the distance between the transmission hole and a collimation hole of the collimator can be positioned. The transmission source collimation shield is simple in structure, good in stability and accurate in positioning.
Description
Technical field
The utility model relates to the radiation detection technology field, particularly a kind of transmission source collimation shielding device that is used for chromatography gamma scanning and measuring apparatus.
Background technology
Before to radioactive waste and waste disposal and disposal; Need carry out the detection of radioactive nuclide and content to these radioactive wastes and refuse; At present; More common checkout equipment is chromatography gamma scanister (TGS) and segmentation gamma scanister (SGS), and transmission source collimation shielding device is part and parcel in these two types of measurement mechanisms.The plain device of retaining of the transmission source collimation shielding device that uses in this type of device both at home and abroad is the baffle-type structure, and some controls the opening and closing of transmission source through the electric mode of the on/off of electromagnet this structure, and some is the opening and closing of controlling transmission source with the motor mode.No matter adopt the sort of mode, these collimations shielding device less stable, the time regular meeting baffle plate occurs and open situation not in place, cause the failure of an experiment.
Summary of the invention
The utility model has overcome deficiency of the prior art, and the transmission source collimation shielding device of a kind of simple in structure, good stability, accurate positioning is provided.
In order to solve the problems of the technologies described above, the utility model is realized through following technical scheme:
A kind of transmission source collimation shielding device; Comprise that transmission source stores chamber, collimating apparatus, shield and stepper motor; Transmission source is stored the chamber and is arranged in the shield, and transmission source is stored the chamber and had beam orifice, and key is; Transmission source store the chamber can be in shield rotation under the driving of stepper motor, in rotary course, can realize the location between the collimating aperture of beam orifice and collimating apparatus.
The utility model is all right:
Described transmission source is stored the right cylinder that the chamber is a tungsten ferronickel material, and its center is a stainless steel metal axle, and an end of metal shaft stretches out a segment length, and gear is installed above that, and metal shaft is installed on the shield.
Described collimating apparatus is the right cylinder that tungsten ferronickel material is processed, and axle has collimating aperture therein.
Described stepper motor adopts belt to be connected with the metal shaft that transmission source is stored the chamber.
The diameter of described collimating aperture is 4 millimeters.
Described shield is the lead shield body.
Compared with prior art, the beneficial effect of the utility model is:
(1) adopting transmission source to store the chamber in the device rotates under the drive of stepper motor; Under Stepping Motor Control, can make the accurate positioning function of the collimating aperture of beam orifice and collimating apparatus; Realize the open and close of transmission source, the angle location of transmission source; The stability of device is provided, has avoided opening situation not in place and taken place.
The accurate location of (2) adopting stepper motor accurately to realize the collimating aperture of beam orifice and collimating apparatus, the line quantity that better controlled is come out from collimating apparatus is fit to the measurement of different densities matrix sample.
(3) position coder on the motor feeds back the pulse number that motor moves at any time, and accurately the grasp source stores the angle of chamber rotation, guarantees the normal operation of experiment.
Description of drawings
The structural representation of Fig. 1 transmission source collimation shielding device
1 collimating apparatus, 2 transmission source are stored chamber, 3 transmission source, 4 stepper motors, 5 shields, 6 collimating apertures, 7 beam orifices
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As shown in Figure 1; A kind of transmission source collimation shielding device; Comprise that transmission source stores chamber 2, collimating apparatus 1, shield 5 and stepper motor 4, transmission source is stored chamber 2 and is arranged in the shield 5, and transmission source is stored chamber 2 and had beam orifice 7; Transmission source store chamber 2 can be in shield 5 rotation under the driving of stepper motor 4, in rotary course, can realize the location between the collimating aperture 6 of beam orifice 7 and collimating apparatus 1.The right cylinder that collimating apparatus 1 is processed for tungsten ferronickel material, axle has the collimating aperture 6 of 4 millimeters of diameters therein.Transmission source is stored the right cylinder that process for tungsten ferronickel material chamber 2; Its center is a stainless steel metal axle, and an end of axle stretches out a segment length, and a gear is installed above that; Gear is arranged on outside the shield 5, and transmission source is stored chamber 2 and can under the support of metal shaft, be rotated.Be connected with belt between the metal shaft that transmission source is stored chamber 2 and the stepper motor 4, motor rotates and drives transmission source and store chamber 2 and rotate, and realizes the open and close of transmission source 3 and the angle location of transmission source 3.
Transmission source is stored chamber 2 and is shield 5 with collimating apparatus 1 outside, and shield 5 is the lead shield body, is used for shielding gamma rays.Transmission source 3 is installed in the center, side that transmission source is stored chamber 2, gamma rays directive sample from beam orifice 7 of transmission source 3 emissions, and it is vertical each other with collimating apparatus 1 central shaft that transmission source is stored chamber 2.
During measurement, control program sends instruction, and drive stepping motor 4 is rotated; Motor drives transmission source through belt and stores chamber 2 rotations; After arriving assigned address, the motor stop motion, transmission source 3 is passed through sample through the gamma rays that beam orifice 7 sends through behind the collimating aperture 6 of collimating apparatus 1; By the detector collection, accomplish the measurement of sample.When stopping to measure, control program sends instruction, and stop motion after stepper motor 4 drives transmission source and stores chamber 2 and rotate 180 ° arrives screening-off position.
Sample for different matrix density; In order to guarantee that spectrometer can obtain suitable data, this device stores the beam orifice 7 of chamber 2 through the adjustment transmission source and the angle of collimating aperture 6 realizes, promptly when sample density is big; The adjustment transmission source is stored the angle of beam orifice 7 rotations of chamber 2; Making the transmission source 3 and the angle of collimating aperture 6 is 0 °, maximum through the gamma rays bundle number of collimating aperture 6, when sample density hour; Make transmission source 3 and collimating aperture 6 at an angle, through the corresponding minimizing of gamma rays bundle number of collimating aperture 6.Therefore, be applicable to the large-scale sample measurement of matrix density.Installation site scrambler on the stepper motor 4; Can obtain the actual pulse number (angle of rotation) that moves of motor at any time; This angle and the angle that presets are compared, can confirm the angle that whether motor really rotates to needs, guarantee that each experiment can both accomplish smoothly.
Claims (6)
1. a transmission source collimation shields device; Comprise that transmission source stores chamber, collimating apparatus, shield and stepper motor; Transmission source is stored the chamber and is arranged in the shield, and transmission source is stored the chamber and had beam orifice, it is characterized in that; Transmission source store the chamber can be in shield rotation under the driving of stepper motor, in rotary course, can realize the location between the collimating aperture of beam orifice and collimating apparatus.
2. a kind of transmission source collimation shielding device according to claim 1 is characterized in that described transmission source is stored the right cylinder that the chamber is a tungsten ferronickel material; Its center is a stainless steel metal axle; One end of metal shaft stretches out a segment length, and gear is installed above that, and metal shaft is installed on the shield.
3. a kind of transmission source collimation shielding device according to claim 1 is characterized in that described collimating apparatus is the right cylinder that tungsten ferronickel material is processed, and axle has collimating aperture therein.
4. a kind of transmission source collimation shielding device according to claim 1 is characterized in that described stepper motor adopts belt to be connected with the metal shaft that transmission source is stored the chamber.
5. a kind of transmission source collimation shielding device according to claim 3 is characterized in that the diameter of described collimating aperture is 4 millimeters.
6. a kind of transmission source collimation shielding device according to claim 1 is characterized in that described shield is the lead shield body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200940437U CN202494652U (en) | 2012-03-14 | 2012-03-14 | Transmission source collimation shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200940437U CN202494652U (en) | 2012-03-14 | 2012-03-14 | Transmission source collimation shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202494652U true CN202494652U (en) | 2012-10-17 |
Family
ID=47000877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200940437U Expired - Lifetime CN202494652U (en) | 2012-03-14 | 2012-03-14 | Transmission source collimation shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202494652U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103901052A (en) * | 2014-03-19 | 2014-07-02 | 中国原子能科学研究院 | SGS (Segmented Gamma-ray Scanner) and TGS (Tomographic Gamma Scanning) combined measurement device and optimization method of collimator |
| CN106597516A (en) * | 2017-01-04 | 2017-04-26 | 中国原子能科学研究院 | Design method of non-destructive measurement system for radioactive material with wide dynamic range |
| CN111722260A (en) * | 2020-06-24 | 2020-09-29 | 上海交通大学 | Transmission source storage and adjustment device |
-
2012
- 2012-03-14 CN CN2012200940437U patent/CN202494652U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103901052A (en) * | 2014-03-19 | 2014-07-02 | 中国原子能科学研究院 | SGS (Segmented Gamma-ray Scanner) and TGS (Tomographic Gamma Scanning) combined measurement device and optimization method of collimator |
| CN106597516A (en) * | 2017-01-04 | 2017-04-26 | 中国原子能科学研究院 | Design method of non-destructive measurement system for radioactive material with wide dynamic range |
| CN111722260A (en) * | 2020-06-24 | 2020-09-29 | 上海交通大学 | Transmission source storage and adjustment device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |
|
| CX01 | Expiry of patent term |