CN1334459A - Multi-source multi-direction ray source of single body - Google Patents
Multi-source multi-direction ray source of single body Download PDFInfo
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- CN1334459A CN1334459A CN 01123745 CN01123745A CN1334459A CN 1334459 A CN1334459 A CN 1334459A CN 01123745 CN01123745 CN 01123745 CN 01123745 A CN01123745 A CN 01123745A CN 1334459 A CN1334459 A CN 1334459A
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Abstract
An isotope ray source of the nondestructive tomographic detection system for large industrial object is disclosed. On the basis of single-body multi-source multi-direction ray source design, one or two radioactive isotopes with different energies are used to generate the rays in different directions. By means of one or more detector for receiving said rays, two or more transmission and scattered images at different angles can be obtained, resulting in a satisfactory 3D image.
Description
This multi-source multi-direction ray source of single body is to invent for the noninvasive imaging detection system of industrial objects such as various containers (comprising land transportation, sea-freight, aviation and train), card lorry, car and rocket means.
Large scale industry object noninvasive imaging detection system generally is to utilize the transmission of radiation imaging at present.As patent CN1142609A, US5903623 promptly be.Because the material layer that ray sees through is very thick, have only the main matter on the raypath just imaging to be played a leading role, testing result can only obtain unidirectional transmission image, it is unknown adding the shape of tested object internal objects and arranging, density also is unknown, and therefore only relying on unidirectional transmission image judges that the internal objects situation of tested object and kind obviously are very difficult.Utilize Compton scattering, can carry out fault imaging to object, as patent US5917880, US4884289, imaging is more clear, but all only gets specific fixed bed surface imaging, and it is relatively poor to detect dirigibility.And a kind of novel large object nondestructive tomographic imaging detection system that occurs recently, in conjunction with transmission of radiation and the characteristics that are scattering into picture, proposed that a kind of mode is flexible, imaging is clear, with less detector the arbitrary cross-section of large object is carried out the noninvasive imaging detection system, number of patent application is: 01201298.X.But this system can be with the radiographic source more than 1, the objective of the invention is to propose a kind ofly both can obtain two or more direction beams in monomer list source, also can the monomer double source obtains the method and apparatus of beam of the different-energy of two above directions.Receive by the detector more than two or two, thereby the transmission and the dispersion image of acquisition different angles promptly can obtain satisfied detection effect.
The present invention adopts the radioactive isotope of one or both different-energies to be installed on the plug formula source(-)holder, and this plug formula source(-)holder can make its static or rotation as required.Utilize the isotropy of isotope ray, by the rotation of combined type source switch in penetrating the source body, be equipped with that accurate variable-frequency motor drives and near the control of switch, reach the purpose (at most can reach 4 above directions, ray maximum angle can differ 180 °) at the same time or separately connected of beam at different directions.Characteristics of the present invention also are the source array switch and penetrate all to have designed corresponding collimating slit on the body of source.
Providing accompanying drawing below is illustrated:
Fig. 1 is the multidirectional radiographic source front view in single source.(can obtain the four direction beam).The plug formula source(-)holder of this invention is fixed, and the anglec of rotation of source switch is driven by variable-frequency motor and controls near switch.
Basic composition: 1. source switch motor 2. radiographic source bodies 3. radioactive isotope power supply cores 4. collimating slits
5. fill in formula source(-)holder 9. source switches
Fig. 2 is for being the multidirectional radiographic source (the A scope is 0～180 °) of A to two angles, in tungsten piece or the depleted uranium (circle among the figure) that increases shielding action arranged, can be also other shape of cylindricality, but guarantee to have enough shielding actions.
Fig. 3 be source switch at Fig. 2 position, be rotated counterclockwise angle A after, obtain one to front-right to the emission beam.
Fig. 4 be source switch at Fig. 2 position, after the angle A that turns clockwise, obtaining one is the beam of the direction emission of A to angle with front-right.
Fig. 5 be source switch at Fig. 2 position, turn clockwise
After, make and penetrate the source security mask, be off working state.
Fig. 6 is the multidirectional radiographic source front view of double source.(double source can obtain eight kinds of different beams of four direction).The plug formula source(-)holder of this invention is rotary, and the rotation of plug formula source(-)holder and source switch is controlled by variable-frequency motor with near switch respectively.
Basic composition: 1. source switch motor 2. radiographic source bodies 3. high-energy isotope source cores 4. slits
5. fill in formula source(-)holder 6. source(-)holder electroplax supports 7. source(-)holder motors 8. low-yield isotope source cores
9. source switch 10. shields depleted uraniums (size is enough thick)
Fig. 7 is the source switch off-position, and the tungsten piece or the depleted uranium (circle in the figure) that increase shielding action are arranged in the source switch and in the body of source, can be that cylindricality also can be other shape, but guarantee that shielding action is enough.
Fig. 8 be source switch at Fig. 7 position half-twist, can obtain the beam of four direction as shown in the figure.Wherein: both direction is the high energy source beam left, and both direction is the low energy sources beam to the right.When revolving the rotoplug type source(-)holder and rotate 180 ° again, obtain the low energy sources beam of both direction left, the high energy source beam of both direction to the right, stack up is equivalent to obtain 8 beams.
Fig. 9 changes the A angle for source switch clockwise at Fig. 7 position, can obtain two complete rightabout beams, and after revolving the rotoplug type source(-)holder and changeing 180 ° again, the height energy position of two kinds of beams is just in time opposite, is equivalent to obtain 4 beams.
Figure 10 is that source switch changes the A angle at Fig. 7 inverse position hour hands, and situation is equivalent to the situation of Fig. 9, also can obtain 4 beams.
Claims (8)
1. multi-source multi-direction ray source of single body that can be used for large object nondestructive tomographic imaging detection system, by radioactive isotope (
60Co,
137Cs or other long-lived isotopes) make ray source core, plug formula source(-)holder, combined type source switch, variable frequency drive motors, penetrate the source body and form near switch.It is characterized in that: the isotope radiographic source, by the rotation of multi-angle source array switch of band collimating slit, respectively with the ray that obtains one, two and four different directions simultaneously.Receive by the detector more than two or two, thereby the transmission and the dispersion image of acquisition different angles promptly can obtain satisfied detection effect.Adjacent beam angular range is 0 °～180 °.
2. the source body of penetrating according to claim 1 is characterized in that: one or both radioisotopic ray source cores are fixedly mounted on the plug formula source(-)holder, and it is employed or conductively-closed by the rotation of multi-angle source array switch.
3. plug formula source(-)holder according to claim 1, it is characterized in that: a kind ofly be used to install and fix the radioactive isotope radiographic source and (can put one, also can put two), its shape is as bottle stopper, installing/dismounting is also simple as bottle stopper, utilize steel to make overcoat, the inner ladder cylindrical body of doing shielding by lead, tungsten, depleted uranium etc.Can make it fix as required, also can drive, make its rotation by variable-frequency motor.
4. combined type source switch according to claim 1 is characterized in that: a kind of multi-angle tubular combined switch that has collimating slit relies on its different anglec of rotation and satisfies user's needs.It exposes shell is steel, and inner is that shielding materials such as lead, tungsten, depleted uranium combine.
5. the source body of penetrating according to claim 1, it is characterized in that: a kind of beam direction and number according to user's needs has matrix collimating slit, that can support as combined switch and other part, and it is to be composited by shielding material steel, tungsten, lead, depleted uranium etc.
6. variable frequency drive motors according to claim 1, it is characterized in that: priming speed is fast, can realize high precision stepless speed regulation, and speed adjustable range is big.
7. large scale industry object according to claim 1 refers to various containers (comprising land transportation, sea-freight, aviation and train), card lorry, car and rocket means etc.
8. detector according to claim 1 refers to adopt scintillator to add optical diode or photomultiplier, gases at high pressure ionization chamber, liquid sudden strain of a muscle, multiwire chamber etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011237457A CN1178058C (en) | 2001-07-31 | 2001-07-31 | Multi-source multi-direction ray source of single body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011237457A CN1178058C (en) | 2001-07-31 | 2001-07-31 | Multi-source multi-direction ray source of single body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1334459A true CN1334459A (en) | 2002-02-06 |
| CN1178058C CN1178058C (en) | 2004-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011237457A Expired - Fee Related CN1178058C (en) | 2001-07-31 | 2001-07-31 | Multi-source multi-direction ray source of single body |
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| CN (1) | CN1178058C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231254B (en) * | 2007-01-24 | 2010-08-11 | 清华大学 | Double source three-dimensional image forming method and system |
| CN104603603A (en) * | 2012-08-30 | 2015-05-06 | 韩国原子力研究院 | Radiation imaging device capable of matter-element information acquisition and image based selection |
| CN106153407A (en) * | 2015-04-02 | 2016-11-23 | 赵正芳 | A kind of gas sample detection equipment |
| CN111982936A (en) * | 2020-08-25 | 2020-11-24 | 绍兴市特种设备检测院 | X-ray automatic detection device for heat exchanger tube-tube plate welding seam |
-
2001
- 2001-07-31 CN CNB011237457A patent/CN1178058C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231254B (en) * | 2007-01-24 | 2010-08-11 | 清华大学 | Double source three-dimensional image forming method and system |
| CN104603603A (en) * | 2012-08-30 | 2015-05-06 | 韩国原子力研究院 | Radiation imaging device capable of matter-element information acquisition and image based selection |
| CN104603603B (en) * | 2012-08-30 | 2017-03-01 | 韩国原子力研究院 | Matter-element information and the radiation imaging apparatus of the selection based on image can be obtained |
| CN106153407A (en) * | 2015-04-02 | 2016-11-23 | 赵正芳 | A kind of gas sample detection equipment |
| CN111982936A (en) * | 2020-08-25 | 2020-11-24 | 绍兴市特种设备检测院 | X-ray automatic detection device for heat exchanger tube-tube plate welding seam |
| CN111982936B (en) * | 2020-08-25 | 2023-10-10 | 绍兴市特种设备检测院 | X-ray automatic detection device for heat exchanger tube-tube plate welding seam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1178058C (en) | 2004-12-01 |
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