CN104198507B - Shield the shutter device and ray scanning imaging system of ray - Google Patents
Shield the shutter device and ray scanning imaging system of ray Download PDFInfo
- Publication number
- CN104198507B CN104198507B CN201410473037.6A CN201410473037A CN104198507B CN 104198507 B CN104198507 B CN 104198507B CN 201410473037 A CN201410473037 A CN 201410473037A CN 104198507 B CN104198507 B CN 104198507B
- Authority
- CN
- China
- Prior art keywords
- shutter
- ray
- baffle
- radiographic source
- protection body
- 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.)
- Active
Links
Abstract
The present invention provides a kind of shutter device and ray scanning imaging system for shielding ray,Including the ray emitter with shutter,Secondary collimator,Detector and control system,The ray emitter includes radiographic source,The radiographic source outer wrapping radiographic source protection body,And the collimater being tightly connected with radiographic source protection body,The radiographic source protection body has radiation exit,The collimater has the collimating channel with radiation exit UNICOM,The collimating channel and extraneous UNICOM,The collimater carries out coupling collimation to the ray that radiographic source is projected,Shutter is set in the collimater,Whole collimating channel can be closed or opened by the shutter,Present invention is particularly suitable for online quick security check equipment,Radiation source shutter is closed and stops ray,Automatic conversion scans " emittance ",Vehicle head part is scanned with low energy rays,Tested box portion is scanned with high-energy rays.Driver by testing equipment is protected, while providing clear, complete scan image rapidly.
Description
Technical field
Patent of the present invention is related to a kind of safety detection radiation imaging apparatus, especially a kind of shutter with shielding ray
The safety detection radiation imaging apparatus of device.
Background technology
In life, many places are required for being equipped with large-scale rays safety detection apparatus, such as customs, airport, frontier defense, prison, harbour, postal service
Row bag, transport and logistics goods yard etc. have the large radiation imaging device of online lossless safety inspection mostly.Online lossless safety
The radiography of inspection is the sigmatron or gamma-rays launched by x-ray apparatus or radiographic source in non-contacting situation
Under penetrate tested article, so as to obtain the fluoroscopy images of inspected object.The large radiation imaging device of early stage is all in owner
Member starts to scan goods again after withdrawing.In order to improve safety check efficiency, the development of safety check technology in addition, each rays safety detection apparatus manufacturer
Start production driver driving lorry and directly pass through formula rays safety detection apparatus, i.e. " gate-type " container car or van rays safety detection apparatus.This
The advantage of kind equipment is detection efficiency high, and driver need not get off " avoidance ".But problem is driver as directly from radiographic source and detection
Pass through between device, significantly dose, and driver can be subject to pass through more than once daily, wound is had to human body
Evil.Therefore " headstock avoidance " method is mostly used at present, that is, judges that driver's cabin is scanned by principal ray Shu Houzai " opening beam ", carry out
IMAQ.
" headstock avoidance " typically has automatic and fixed both of which." avoiding pattern automatically " is sentenced by various photoelectric sensors
" avoidance " is implemented in gap between other headstock (driver's cabin) and tested casing, i.e., after headstock (driver's cabin) by rear by measuring tank
Body is scanned by principal ray Shu Shizai " opening beam ", to ensure driver's health.But because various countries' production and the vehicle five for using spend eight
Door, some headstocks and container spacing be more than 2 meters, only tens centimetres of some headstocks and container spacing.In headstock (driver's cabin) and tested
Between casing, the also debris such as cable, blast pipe, and live speed cannot also determine, often judge inaccurate.Therefore now mostly
Using " fixed avoidance pattern ".It is manually set " maximum is avoided " headstock (driver's cabin) length (such as 3.5 for not opening beam
Rice), then " opening beam " scanning.But when such as running into less headstock (driver's cabin) length (such as 2.5 meters), and headstock (driver's cabin) and quilt
Measuring tank body spacing again very little (tens centimetres) when, will the tested casing (front end) of " drain sweep " part, cause safety check " dead angle ".Again
Need the certain hour roentgen dose X is increased to ideal value because radiographic source " going out beam " arrives stabilization afterwards, also cause that front end is tested
Casing causes penetration power inadequate because ray energy is unstable.When scanning every time is just had no time to attend to when energy is unstable in addition
Real-time " calibration " of detector, can cause image " background " not " clean " and influence picture quality, above two pattern all may
Cause scan image front end defect or unintelligible (when particularly speed is very fast and cannot determine).Therefore scanning is needed to obtain
Simultaneously, can farthest protect again particularly needs the driver of multipass gate-type rays safety detection apparatus to whole, clear goods image everyday,
Not raying and the influence of scattered dose, become current problem demanding prompt solution.
Actual all kinds of radiographic sources, particularly accelerator class, can be that follow procedure presets the energy that (adjust automatically) goes out beam
Amount, for example, first scan this part low to penetration power requirement of headstock (driver's cabin), then scanned with high-energy ray with low energy ray
This part high to penetration power requirement of railway carriage (body).But the time of " the energy switching " of existing all kinds of radiographic sources is all more long, extremely
Less more than the several seconds, institute cannot be applied in actually detected equipment in this way.
The content of the invention
To solve the above problems, the present invention provides shutter device and the side of a kind of shielding ray with quick acting
Method, " energy switching " is made it possible by the method for " quick stop ", and ray energy is constant when opening beam scanning, but penetrates headstock
Ray dose of radiation has been reduced to the degree that human body can receive in short term through stop during (driver's cabin) part, and to tested
Ray dose of radiation meets the requirement of safety check high penetrating power and definition again in goods (casing) partial routine, while provide again
Completely, clearly scan image, overcomes existing safety check hidden danger.
To achieve the above object, the present invention is adopted the following technical scheme that：
A kind of shutter device for shielding ray, including the protection of radiographic source 101, the outer wrapping radiographic source of the radiographic source 101
Body 102 and the collimater 103 being tightly connected with radiographic source protection body 102, wherein, the radiographic source protection body 102 has to be penetrated
Line outlet 1021, the collimater 103 has the collimating channel 1031 with the UNICOM of radiation exit 1021, the collimating channel 1031
With extraneous UNICOM, the collimater 103 carries out coupling collimation to the ray that radiographic source 101 is projected, and is set in the collimater 103
Whole collimating channel 1031 can rapidly be closed or opened by shutter 106, the shutter 106.
Wherein, including drive shutter 106 driver element 105 and support protection shutter 106 shutter protective stent 104.
Wherein, the radiation exit 1021 is rectangular, and the collimater 103 includes being fixed on the radiographic source protection body
The first baffle 1032 of the both sides of rectangle radiation exit 1021, second baffle 1033 on 102 outer walls, the first baffle 1032,
The shape of two baffle plate 1033 is identical and is placed in parallel each other, at a distance of formation between the first baffle 1032, second baffle 1033
Collimating channel 1031, the first baffle 1032, the upper end of second baffle 1033, lower end are by connecting third baffle the 1034, the 4th
Baffle plate 1035 is sealed.
Wherein, the shutter protective stent 104 is fixed on the baffle plate outer wall of the position of baffle plate setting shutter 106, described fast
Door 106 is the sliding block 1061 that can block whole collimating channel 1031, and the inside of the shutter protective stent 104 sets and supplies sliding block 1061
The chute 1062 of slip, the chute 1062 is intersecting and final with the collimating channel 1031 with being extended in its baffle plate that connects
With another baffle plate overlap joint, the driver element 105 for driving sliding block 1061 to slide is set on the shutter protective stent 104.
Wherein, the shutter protective stent 104 includes that the middle part of the first baffle 1032 is set with semi-cylindrical inner chamber
The first shutter protection body 2041, the second baffle 1032 is symmetrical arranged and the identical of the first shutter protection body 2,041
Two shutter protection bodies 2042, the shutter 106 is the cylindrical blocks 205 that can be rotated around own axes, and first shutter is prevented
Staggered relatively formation accommodates the cylindrical blocks 205 for the semi-cylindrical inner chamber of the shutter protection body 2042 of watch box 2041 and second
Circular cylindrical cavity, at a distance of formation and collimating channel between the first shutter protection body 2041, the second shutter protection body 2042
The passage 2043 that 1031 Internal peripheries are engaged, the inside of the cylindrical blocks 205 sets and matches with the Internal periphery of the passage 2043
The endoporus 2051 of conjunction, the cylindrical blocks 205 are placed in the circular cylindrical cavity and can be rotated around own axes, the endoporus
2051st, passage 2043, collimating channel 1031 can UNICOM's collimating channels for being collimated to ray of composition, the shutter protective stent
104 upper ends or lower end set the driver element 105 for driving the rotation of cylindrical blocks 205.
Wherein, the shutter 106 is formed by stacking by the different steel plate of at least two pieces thickness or stereotype, the steel plate of different-thickness
Can be combined with stereotype.
Wherein, the driver element 105 is the hydraulic cylinder or electromagnet of offer linear driving force.
Wherein, the driver element 105 is to provide the hydraulic motor of rotary driving force, air motor, stepper motor or watch
Take motor.
A kind of ray scanning imaging system, including the ray emitter with shutter 106, also include：
Secondary collimator 304, is placed in the ray emitter front, and the ray to being projected by the ray generator enters
Row is collimated for second；
Detector 306, be spaced with the secondary collimator 304 it is staggered relatively, the detector 306 and described two grades collimation
Thing to be checked is formed between device 304 by area, the detector 306 receives ray signal and converted and transmitted；
And control system 307, switch and the action of each part are controlled for judging the presence or absence of thing to be checked, during detection.
The beneficial effects of the present invention are：
(1) present invention is closed by radiation source shutter and stops big portion (or whole) flying spot, automatic conversion scanning " radiation
Energy ", headstock (driver's cabin) part is scanned with low energy (dosage), and tested box portion is scanned with high-energy (dosage).Can
Protective action is played to the driver by testing equipment, while providing clear, complete vehicle image rapidly again.It is particularly suitable for using
Online quick large-scale rays safety detection apparatus in the container car to there is personnel to drive, van and with closing space vehicle.
(2) if it is desired to while reducing driver's dose of radiation, check whether headstock keeps contraband, it is desirable to obtain headstock
Scan image, can enable ray to penetrate, but penetrate the mistake of block by changing sliding block, the quantity of cylindrical blocks or thickness
Ray dose of radiation is reduced human body acceptable scope in journey, meanwhile, the beam line dosage that goes out of reduction is stilld provide
Complete scan image.
(3) radiographic source, without frequently opening, closing, can be normally open, by the opening of shutter, close to realize protection
Driver simultaneously controls to produce the time of image, extends the service life of radiographic source, further, since radiographic source " goes out in advance
Beam ", roentgen dose X has reached ideal value when starting scanning, and " calibration " and view data accurate acquisition for detector are created
Good condition, picture quality can be higher.
Brief description of the drawings
Fig. 1 is ray scanning imaging system front schematic view of the present invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the front view of the portable shutter of the embodiment of the present invention 1；
Fig. 4 is the top view of the portable shutter working condition of the embodiment of the present invention 1；
Fig. 5 is another working condition top views of Fig. 4；
Fig. 6 is the front view of the rotary shutter of the embodiment of the present invention 2；
Fig. 7 is the top view of the rotary shutter working condition of the embodiment of the present invention 2；
Fig. 8 is another working condition top views of Fig. 7；
Fig. 9 is the rotary shutter sliding block cross section structure schematic diagram of the embodiment of the present invention 2；
Figure 10 is the portable shutter sliding block cross section structure schematic diagram of the embodiment of the present invention 1.
Label in figure：301- ray emitter 304- secondary collimators 305- thing 306- detectors 307- controls to be checked
System 101- radiographic source 102- radiographic source protection body 103- collimater 104- shutter protective stent 105- driver elements 106-
The third baffle -1,034 of -1032 second baffle of shutter 1021- radiation exit 1031- collimating channels first baffles -1033
1061- sliding block 1062- chutes 2041- the first shutter protection body 2042- the second shutter protection bodies 205- of four baffle plate -1035
Cylindrical blocks 2051- endoporus 2043- passages.
Specific embodiment
Following examples are only clearly to illustrate example of the present invention, and not to embodiments of the present invention
Limit.For those of ordinary skill in the field, other multi-forms can also be made on the basis of the following description
Change or variation, and these belong to the obvious change or change still in guarantor of the invention that spirit of the invention drawn
Among shield scope.
The ray scanning imaging system of the shutter device with shielding ray that the present invention is provided, it is to avoid ray radiation is produced
Raw harm, while quickly obtaining complete object image to be checked, improves safety check efficiency.
As shown in Figure 1 and Figure 2, ray scanning imaging system structure provided in an embodiment of the present invention, including it is fast with radiographic source
The ray emitter 301 of door gear, is placed in the secondary collimator 304 in the front of the ray emitter 301, two grades of collimations
304 pairs of rays projected by the ray generator 301 of device carry out second collimation；Ray after secondary collimator 304
It is also staggered relatively including being spaced with the secondary collimator 304 with the radiation field size that can cover the whole short transverse of thing to be checked 305
Detector 306, thing to be checked is formed between the detector 306 and the secondary collimator 304 by area, as shown in Figure 1, Figure 2 institute
Show thing to be checked 305 for vehicle, when driver driving vehicle passes through area by thing to be checked, the optical diode-sudden strain of a muscle in the detector 306
Bright crystal assembly is received through after ray of the inspected object with detection information, produces photon signal, and telecommunications is changed into through optical diode
Number, by automated imaging after image acquisition units and graphics processing unit；Also include control system 307, the control system 307
The trigger switch of the detection thing to be checked of system front end installation is included in, when detected vehicle 305 is by quick inspection system, is touched
Hair PLC control system, the triggering of ray emitter 301 is opened, and radiographic source radiates X-ray or γ to go out beam dose progressive manner
Ray, reaches by very short time and normally goes out Shu Shuiping, during this period shutter close, when driver and driver's cabin are radiated by ray
Scope, while ray is reached when normally going out Shu Shuiping, the control shutter of control system 307 is opened, and scanning vehicle body provides complete clear
Scan image.
Following examples are the explanation to radiation source shutter device concrete structure.
Embodiment 1
As shown in Fig. 3, Fig. 4, Fig. 5, the structure of the radiation source shutter device that the embodiment of the present invention 1 is provided, including radiographic source
101st, the outer wrapping radiographic source protection body 102 of the radiographic source 101 and the collimater being tightly connected with radiographic source protection body 102
103, the radiographic source protection body 102 has radiation exit 1021, and the collimater 103 has and the UNICOM of radiation exit 1021
Collimating channel 1031, the collimating channel 1031 enters with extraneous UNICOM, the collimater 103 to the ray that radiographic source 101 is projected
Row coupling collimation, sets shutter 106 in the collimater 103, whole collimating channel 1031 can be closed or beaten by the shutter 106
Open.
Wherein, the radiation exit 1021 is rectangular, and the wall of radiographic source protection body 102 has certain thickness, the square
The height of shape radiation exit 1021 gradually increases from inside to outside on the thickness direction of radiographic source protection body 102, the collimater
103 first baffles 1032, second for including being fixed on the both sides of rectangle radiation exit 1021 on the outer wall of radiographic source protection body 102
Baffle plate 1033, the first baffle 1032, the shape of second baffle 1033 are identical and are placed in parallel each other, the first baffle
1032nd, between second baffle 1033 at a distance of formed collimating channel 1031, the first baffle 1032, the upper end of second baffle 1033,
Lower end is sealed by connecting third baffle 1034, fourth gear plate 1035, the first baffle 1032, second baffle 1033,
The collimating channel 1031 that third baffle 1034, fourth gear plate 1035 are surrounded is along the inwall incline direction of the radiation exit 1021
Continue to extend and amplify.
Wherein, also including driving the driver element 105 of the motion of shutter 106 and the shutter of support protection shutter 106 to protect branch
Frame 104.The shutter protective stent 104 is fixed on first baffle 1032 and sets on the baffle plate outer wall of the position of shutter 106, described fast
Door 106 is the sliding block 1061 that can block whole collimating channel 1031, and the inside of the shutter protective stent 104 sets and supplies sliding block 1061
The chute 1062 of slip, the chute 1062 is extending through first baffle 1032, through after the collimating channel 1031, finally
Overlapped with second baffle 1033, the driver element 105 for driving sliding block 1061 to slide, institute are set on the shutter protective stent 104
Driver element 105 is stated to provide hydraulic cylinder, the electromagnet of linear driving force, the sliding block 1061 drives in driver element 105
Under in chute 1062 slidable adjustment ray go out beam amount, or alignment straight channel 1031 is opened or closed operation completely, pass
Ray is stopped when closing, plays protective action, the unimpeded completion alignment procedure of collimating channel 1031, the driving are made during opening
The controlled system 307 of unit 105 is controlled, and control system 307 detects object location to be checked and sends corresponding control signal, real work
When, as shown in figure 4, when driver driving vehicle passes through area by thing to be checked, control system 307 is detected and sending signal opening signal
The divergent-ray of source 101, while the alignment straight channel 1031 of sliding block 1061 is closed, stops ray, and ray reaches and normally goes out Shu Shui
Flat to need certain hour, interior driver can drive vehicle safety by ray radiation areas during this period, as shown in figure 5, working as driver
And driver's cabin is by the way that after ray radiation scope, while ray is reached when normally going out Shu Shuiping, sliding block is protected in the control of control system 307
1061 open collimating channel 1031, the ray scanning vehicle body of sufficient dosage is provided complete clearly scan image, the cunning
The distance of the movement of block 1061 only needs 10-20mm, shutter opening time about 0.1s, protects driver not radiated by ray to greatest extent
Influence, while also ensure that the complete display of scan image.
Embodiment 2
As shown in Fig. 6, Fig. 7, Fig. 8, the structure of the radiation source shutter device that the embodiment of the present invention 2 is provided, including radiographic source
101st, the outer wrapping radiographic source protection body 102 of the radiographic source 101 and the collimater being tightly connected with radiographic source protection body 102
103, the radiographic source protection body 102 has radiation exit 1021, and the collimater 103 has and the UNICOM of radiation exit 1021
Collimating channel 1031, the collimating channel 1031 enters with extraneous UNICOM, the collimater 103 to the ray that radiographic source 101 is projected
Row coupling collimation, sets shutter 106 in the collimater 103, whole collimating channel 1031 can be closed or beaten by the shutter 106
Open.
Wherein, the radiation exit 1021 is rectangular, and the wall of radiographic source protection body 102 has certain thickness, the square
The height of shape radiation exit 1021 gradually increases from inside to outside on the thickness direction of radiographic source protection body 102, the collimater
103 first baffles 1032, second for including being fixed on the both sides of rectangle radiation exit 1021 on the outer wall of radiographic source protection body 102
Baffle plate 1033, the first baffle 1032, the shape of second baffle 1033 are identical and are placed in parallel each other, the first baffle
1032nd, between second baffle 1033 at a distance of formed collimating channel 1031, the first baffle 1032, the upper end of second baffle 1033,
Lower end is sealed by connecting third baffle 1034, fourth gear plate 1035, the first baffle 1032, second baffle 1033,
The collimating channel 1031 that third baffle 1034, fourth gear plate 1035 are surrounded be the inwall incline direction of the radiation exit 1021 after
Renew and stretch and amplification.
Wherein, the shutter protective stent 104 includes that the middle part of the first baffle 1032 is set with semi-cylindrical inner chamber
The first shutter protection body 2041, the second baffle 1032 is symmetrical arranged and the identical of the first shutter protection body 2,041
Two shutter protection bodies 2042, the shutter 106 is the cylindrical blocks 205 that can be rotated around own axes, and first shutter is prevented
Staggered relatively formation accommodates the cylindrical blocks 205 for the semi-cylindrical inner chamber of the shutter protection body 2042 of watch box 2041 and second
Circular cylindrical cavity, at a distance of formation and collimating channel between the first shutter protection body 2041, the second shutter protection body 2042
The passage 2043 that 1031 Internal peripheries are engaged, the inside of the cylindrical blocks 205 sets and matches with the Internal periphery of the passage 2043
The endoporus 2051 of conjunction, the cylindrical blocks 205 are placed in the circular cylindrical cavity and can be rotated around own axes, when the circle
Cylindricality block 205 is rotated to certain angle, makes the endoporus 2051, passage 2043 and the both sides of shutter protective stent 104
During 1031 UNICOM of collimating channel, the endoporus 2051, passage 2043 and collimating channel 1031 constitute the standard collimated to ray
Straight channel, the upper end of shutter protective stent 104 or lower end set the driver element for driving the rotation of cylindrical blocks 205
105, the driver element 105 is hydraulic motor, air motor, stepper motor, the servomotor for providing rotary driving force, described
Cylindrical blocks 205 rotate regulation ray and go out beam amount under the driving of driver element 105 in circular cylindrical cavity, or alignment leads directly to
Road 1031 is opened or closed operation completely, and ray is stopped, plays protective action, and the driver element 104 is controlled
System processed 307 is controlled, and control system 307 detects object location to be checked and sends corresponding control signal, during real work, such as Fig. 7 institutes
Show, when driver driving vehicle passes through area by thing to be checked, the detection of control system 307 is simultaneously launched in sending signal opening signal source 101
Ray, while the rotation of cylindrical blocks 205 makes endoporus 2051 not connected with passage 2043, alignment straight channel 1031 is closed,
Stop ray, ray reaches and normally go out Shu Shuiping and need certain hour, and interior driver can drive vehicle safety by penetrating during this period
Beta radiation region, as shown in figure 8, when driver and driver's cabin are by after ray radiation scope, while ray reaches normally goes out Shu Shui
Usually, the control of control system 307 cylindrical blocks 205 rotation makes endoporus 2051 and the UNICOM of passage 2043, so that and collimating channel
1031 UNICOMs, make the ray scanning vehicle body of sufficient dosage provide complete clearly scan image, and the cylindrical blocks 205 rotate
Angle only needs 15-30 °, and shutter opening time about 0.1s protects driver not by ray radiation effect, while also protecting to greatest extent
The complete display of scan image is demonstrate,proved.
Additionally, in the ray scanning imaging system embodiment of present invention offer, radiographic source 101 is without frequently opening, closing,
Can be normally open, by the opening of shutter 302, close to realize protecting driver and control to produce the time of image, extension
The service life of radiographic source 101, when tested vehicle enters sense channel, radiographic source begins to " going out beam ", but now shutter
Shutter in device is to close, and beam can be by most or all " stops ", and the dosage of detection ray is extremely low, but still can be into
Picture.After after headstock (driver's cabin) safety radiographic source principal ray beam, shutter device shutter is automatically opened up immediately, it is clear to scan
Image, due to " the going out beam in advance " of radiographic source, ray has reached ideal value during scanning, " calibration " for detector and accurate
Collection creates good condition, and picture quality can be higher.
Meanwhile, in the radiation source shutter device embodiment that the present invention is provided, it is desirable to while reducing driver's dose of radiation, no
Wish the casing front end of the tested goods of missing inspection, moreover it is possible to check whether headstock (driver's cabin) part keeps contraband, it is desirable to obtained
Whole vehicle scan image, can by changing the thickness of the sliding block 1061, cylindrical blocks 205, or as shown in Figure 9, Figure 10,
The sliding block 1061, cylindrical blocks 205 are made and are made up of at least 2 pieces or the different steel plate of polylith thickness or stereotype superposition,
The steel plate of different-thickness can be combined with stereotype, make block thickness adjustable；Due to all kinds of accelerators (Betatron electronic inductions
Accelerator and LINAC linear accelerators etc.) energy and go out that beam dose rate is different, therefore in shutter device shutter block it is folded
Add thickness difference, is suitable for different rays safety detection apparatus demands.Shutter device can be preselected for different types of radiographic source
The block number of middle opening or the block of selection different-thickness (material), block major part and go out beam line, make what driver was subject to radiate
Dosage is substantially reduced, but can carry out vehicle complete scan to headstock (driver's cabin) and box portion.Adjustment block, selection is used
Different superposition thickness, stops most of ray (such as 90%), and dosage suffered by driver is less than 10% when not stopping (about
10uSV).Annual suffered dosage is 3600uSV (equivalent 3.6mSV) to the maximum, meets international hygiene level of protection basic demand.
If the whole superposition thickness provided in selection use device, just stop most rays (such as 99%) driver suffered every time
There was only about below 1uSV to dosage, such as daily by 3 times, it is only 1080uSV (equivalent that annual suffered dosage is maximum
1.08mSV), it is significantly less than international hygiene level of protection.
The use of radiation source shutter device, ray energy is constant when making out beam scanning, but penetrates headstock (driver's cabin) part
During ray dose of radiation be reduced to the degree that human body can receive in short term through stopping, and to being tested goods (casing) portion
Ray dose of radiation meets the requirement of safety check high penetrating power and definition again during point, while provide completely, clearly again
Scan image, overcomes existing safety check hidden danger.
Claims (5)
1. a kind of shutter device for shielding ray, including radiographic source (101), the radiographic source (101) outer wrapping radiographic source are anti-
Watch box (102) and the collimater (103) being tightly connected with radiographic source protection body (102), it is characterised in that the radiographic source
Protection body (102) leads to radiation exit (1021), the collimater (103) with the collimation with radiation exit (1021) UNICOM
Road (1031), the collimating channel (1031) and extraneous UNICOM, the ray that the collimater (103) is projected to radiographic source (101)
Carry out setting shutter (106) in coupling collimation, the collimater (103), the shutter (106) can be by whole collimating channel
(1031) it is rapid to close or open；
Including driving the driver element (105) of shutter (106) and the shutter protective stent (104) of support protection shutter (106)；
The radiation exit (1021) is rectangular, and the collimater (103) is including being fixed on the radiographic source protection body (102) outward
The first baffle (1032) of rectangle radiation exit (1021) both sides, second baffle (1033) on wall, the first baffle (1032),
Second baffle (1033) shape is identical and is placed in parallel each other, between the first baffle (1032), second baffle (1033)
At a distance of collimating channel (1031) is formed, the first baffle (1032), second baffle (1033) upper end, lower end are by connection the 3rd
Baffle plate (1034), fourth gear plate (1035) are sealed；
The shutter protective stent (104) is fixed on the baffle plate outer wall of baffle plate setting shutter (106) position, the shutter
(106) for the sliding block (1061) of whole collimating channel (1031) can be blocked, set for sliding inside the shutter protective stent (104)
The chute (1062) that block (1061) is slided, the chute (1062) extends to and the collimating channel in the baffle plate that connects with it
(1031) intersect and finally with another baffle plate overlap, on the shutter protective stent (104) set drive sliding block (1061) slide
Driver element (105).
2. as described in claim 1 shielding ray shutter device, it is characterised in that the shutter protective stent
(104) the first shutter protection body (2041) with semi-cylindrical inner chamber, institute are set including the first baffle (1032) middle part
State second baffle (1033) be symmetrical arranged with the first shutter protection body (2041) identical the second shutter protection body (2042),
The shutter (106) is the cylindrical blocks (205) that can be rotated around own axes, the first shutter protection body (2041) and the
The semi-cylindrical inner chamber of two shutter protection bodies (2042) is staggered relatively to form the cylindrical cavity for accommodating the cylindrical blocks (205)
Body, at a distance of formation and collimating channel (1031) between the first shutter protection body (2041), the second shutter protection body (2042)
The passage (2043) that Internal periphery is engaged, is set and the passage (2043) Internal periphery phase inside the cylindrical blocks (205)
The endoporus (2051) of cooperation, the cylindrical blocks (205) are placed in the circular cylindrical cavity and can be rotated around own axes, institute
State endoporus (2051), passage (2043), collimating channel (1031) can UNICOM's collimating channel for being collimated to ray of composition, it is described
Shutter protective stent (104) upper end or lower end set the driver element (105) for driving cylindrical blocks (205) rotation.
3. the shutter device of ray is shielded as claimed in claim 1 or 2, it is characterised in that the shutter (106) is by extremely
The different steel plate of few more than two pieces thickness or stereotype are formed by stacking, and the steel plate of different-thickness can arbitrarily set with stereotype and combine.
4. the shutter device of the shielding ray as described in claim 1, it is characterised in that the driver element (105) is to carry
For the hydraulic cylinder or electromagnet of linear driving force.
5. the shutter device of the shielding ray as described in claim 2, it is characterised in that the driver element (105) is to carry
Hydraulic motor, air motor, stepper motor or servomotor for rotary driving force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410473037.6A CN104198507B (en) | 2014-09-16 | 2014-09-16 | Shield the shutter device and ray scanning imaging system of ray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410473037.6A CN104198507B (en) | 2014-09-16 | 2014-09-16 | Shield the shutter device and ray scanning imaging system of ray |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104198507A CN104198507A (en) | 2014-12-10 |
| CN104198507B true CN104198507B (en) | 2017-06-16 |
Family
ID=52083832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410473037.6A Active CN104198507B (en) | 2014-09-16 | 2014-09-16 | Shield the shutter device and ray scanning imaging system of ray |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104198507B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2543753B (en) | 2015-10-21 | 2020-07-29 | Smiths Heimann Sas | Vehicle cabin inspection system and method |
| CN107361779B (en) * | 2016-05-13 | 2023-04-11 | 通用电气公司 | Interface for gantry and component |
| CN106370676B (en) * | 2016-08-30 | 2023-11-14 | 北京华力兴科技发展有限责任公司 | Accelerator shielding container with alignment mechanism and container/vehicle inspection equipment |
| CN106908459B (en) * | 2017-04-06 | 2024-04-05 | 北京华力兴科技发展有限责任公司 | X-ray emitter mounting cabin and vehicle detection device |
| CN107861146A (en) * | 2017-12-26 | 2018-03-30 | 同方威视技术股份有限公司 | The twilight sunset test device of scintillator |
| CN110459338A (en) * | 2018-05-08 | 2019-11-15 | 清华大学 | Screened room, radiation source device and vehicle safety detection system |
| CN110389387A (en) * | 2019-06-06 | 2019-10-29 | 上琛安防科技（上海）有限公司 | Intelligent X-ray security detection equipment collimation, radiographic source and detection acquisition system |
| CN113049614B (en) | 2019-12-11 | 2022-11-08 | 同方威视技术股份有限公司 | Adjusting and positioning device and method for ray source assembly and radiation scanning imaging equipment |
| CN111781652B (en) * | 2020-06-30 | 2023-08-18 | 上海瑞示电子科技有限公司 | Ray shielding device, ray source and ray inspection equipment |
| CN113884513B (en) * | 2021-08-19 | 2024-01-30 | 浙江华视智检科技有限公司 | Security check machine and cargo detection method |
| CN114019571A (en) * | 2021-09-29 | 2022-02-08 | 浙江华视智检科技有限公司 | Security inspection equipment and ray light path correction method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1160557C (en) * | 2001-09-03 | 2004-08-04 | 北京埃索特核电子机械有限公司 | Equipment of cobalt 60 gamma ray source-cesium iodide or cadmium tungstate detector for checking container |
| CN1173170C (en) * | 2002-09-23 | 2004-10-27 | 清华大学 | Gamma-ray radiation source device for container inspecting system |
| US7352844B1 (en) * | 2004-01-30 | 2008-04-01 | Science Applications International Corporation | Method and system for automatically scanning and imaging the contents of a moving target |
| CN1779445A (en) * | 2004-11-26 | 2006-05-31 | 清华同方威视技术股份有限公司 | Shutter structure of open and closed radioactive imaging checking system on train |
| CN202676632U (en) * | 2012-03-19 | 2013-01-16 | 北京埃索特核电子机械有限公司 | Inspection device for fresh agricultural product transport vehicles |
| CN102768219B (en) * | 2012-07-26 | 2014-07-30 | 清华大学 | Combined nondestructive testing method and combined nondestructive testing system |
| CN203203944U (en) * | 2013-04-27 | 2013-09-18 | 北京曼德克环境科技有限公司 | Green channel vehicle detection meter adopting X-ray backscatter and transmission combined detection |
| CN203799027U (en) * | 2014-04-15 | 2014-08-27 | 北京曼德克环境科技有限公司 | Cobalt-60 gamma ray transmission type green channel vehicle detector |
| CN204142659U (en) * | 2014-09-16 | 2015-02-04 | 北京一体通探测技术有限公司 | The shutter device of shielding ray and ray scanning imaging system |
-
2014
- 2014-09-16 CN CN201410473037.6A patent/CN104198507B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104198507A (en) | 2014-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104198507B (en) | Shield the shutter device and ray scanning imaging system of ray | |
| US11852775B2 (en) | High-speed security inspection system | |
| US7399976B2 (en) | Method and equipment for discriminating materials by employing fast neutron and continuous spectral x-ray | |
| US9348040B2 (en) | Adaptive scanning in an imaging system | |
| US7335887B1 (en) | System and method for target inspection using discrete photon counting and neutron detection | |
| US8254517B2 (en) | CT scanning and contraband detection | |
| JP6054938B2 (en) | X-ray fluoroscopic imaging system | |
| CN102834738A (en) | Cargo and vehicle inspection system | |
| CN105379425A (en) | Portable security inspection system | |
| CN104221093B (en) | Rotating gantry and particle beam therapy device | |
| KR20150022899A (en) | Methods and systems for time-of-flight neutron interrogation for material descrimination | |
| EP2748628A1 (en) | Covert surveillance using multi-modality sensing | |
| CN204142659U (en) | The shutter device of shielding ray and ray scanning imaging system | |
| CN103630947B (en) | Back scattering human body security check system and the scan method thereof of radioactive substance can be monitored | |
| CN207689689U (en) | Radiation checking system | |
| CN207263941U (en) | Radiation appliance and radiation checking system | |
| CN107490805A (en) | Radiation appliance and radiation checking system | |
| KR102284602B1 (en) | A security inspection device using neutron ray and x-ray | |
| RU2612734C2 (en) | Installation for dry enrichment of kimberlite ore by method of labelled neutrons | |
| US10809415B2 (en) | Imaging device for use in vehicle security check and method therefor | |
| CN206741002U (en) | The detection means of bus luggage compartment | |
| CN209387897U (en) | A kind of ring road vehicle safety inspection equipment | |
| CN212675197U (en) | Double-source double-visual-angle passenger car rapid inspection device | |
| WO2023125286A1 (en) | Multi-ray source inspection device and inspection method | |
| CN103995299A (en) | X-ray beam control device in green channel detection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |