CN207336403U - Tomoscan check device - Google Patents

Abstract

The utility model discloses a kind of tomoscan check device, for carrying out safety inspection to container, including：Fixing bracket, for as installing matrix, including fixed part；Rotary support, has penetrating sense channel, and rotary support can be arranged to rotation support bracket fastened fixed part, and the rotation axis and sense channel of rotary support are coaxial；Radiation source device, is arranged at rotary support, for providing the detection ray with 90 degree to 135 degree scanning ranges；Detector array, including multiple detectors, annular arrangement is in rotary support centered on the rotation axis of rotary support for multiple detectors, and the ray of each detector in multiple detectors receives window and is directed at the emission center of radiation source device；Driving mechanism, for driving rotary support rotation on fixing bracket.

Description

Tomoscan check device

Technical field

The utility model belongs to safety inspection technical field, more particularly to a kind of tomoscan check device.

Background technology

Container check system can check the suspicious item in container by way of radiant image, available for customs etc. The safety inspection of unit.Existing container radiation image-forming detecting system can only all provide the perspective view of one to two fixed-directions Picture, and direction cannot change；Projected when needing both direction, it is necessary to which two sets of radiographic sources and detector, cause cost significantly Increase.And container CT (Computed Tomography) check device can provide 3-D view, and material knowledge can be carried out Not, so as to substantially reducing false drop rate.But current container CT (Computed Tomography) check device body The problem of product and quality are huge.

Utility model content

The utility model embodiment provides a kind of tomoscan check device, can have less volume.

First aspect, there is provided a kind of tomoscan check device, for carrying out safety inspection to container, including：It is fixed Stent, for as installing matrix, including fixed part；Rotary support, have a penetrating sense channel, and rotary support can rotation Support bracket fastened fixed part is arranged at, the rotation axis and sense channel of rotary support are coaxial；Radiation source device, is arranged at revolution branch Frame, for providing the detection ray with 90 degree to 135 degree scanning ranges；Detector array, including multiple detectors, multiple spies Surveying device, annular arrangement is in rotary support centered on the rotation axis of rotary support, and each detector in multiple detectors is penetrated Line receives the emission center that window is directed at radiation source device；Driving mechanism, for drive rotary support on fixing bracket from Turn.

In the first possible implementation, the arrangement scope that detector array is listed on rotary support is more than or equal to revolution The half circumference of stent.

With reference to above-mentioned possible implementation, in second of possible implementation, driving mechanism is direct driving motor, bag Inner stator and outer rotor are included, inner stator includes penetrating inner cavity, and inner cavity and the sense channel of rotary support are coaxial, and inner stator is fixed In fixing bracket, outer rotor can be rotated around inner stator, and rotary support is coaxially coupled to outer rotor.

With reference to above-mentioned possible implementation, in the third possible implementation, inner stator is connected to by end face Support bracket fastened fixed part, and/or, rotary support is connected to the end face of outer rotor.

With reference to above-mentioned possible implementation, in the 4th kind of possible implementation, support bracket fastened fixed part is ring Shape, diameter are identical with the diameter of inner stator.

With reference to above-mentioned possible implementation, in the 5th kind of possible implementation, radiation source device includes：Ray Source, ray is detected for providing；Shield, has chamber and the opening with chamber, and radiographic source is contained in chamber, opening Pass through for the ray for radiographic source；Radiographic source drives, for driving radiographic source in the indoor first position of chamber and the second place Between move；Wherein, opening can be directed at when radiographic source is located at first position, opening is deviateed during positioned at the second place.

With reference to above-mentioned possible implementation, in the 6th kind of possible implementation, shield further includes shield door, should Shield door can close opening.

With reference to above-mentioned possible implementation, in the 7th kind of possible implementation, opening is in slit-shaped, so as to pass through The ray of opening radiation forms scanning plane.

With reference to above-mentioned possible implementation, in the 8th kind of possible implementation, the subtended angle of opening is at 90 degree to 135 Between degree.

With reference to above-mentioned possible implementation, in the 9th kind of possible implementation, radiographic source is isotope radiographic source.

With reference to above-mentioned possible implementation, in the tenth kind of possible implementation, radiographic source 60Co, 137Cs, One of which in 192Ir, 75Se.

The tomoscan check device that the utility model embodiment provides, radiation source device have larger ray subtended angle, Therefore the scanning range of ray can be increased so that the diameter of rotary support is reduced.

Using direct drive type outer rotor motor, transmission mechanism is eliminated, the matter of the tomoscan check device further reduced Amount and volume.

Brief description of the drawings

, below will be in the utility model embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Required attached drawing is briefly described, it should be apparent that, drawings described below is only the one of the utility model A little embodiments, for those of ordinary skill in the art, without creative efforts, can also be according to these Attached drawing obtains other attached drawings.

Fig. 1 is the axonometric drawing of the tomoscan check device provided according to the utility model one embodiment；

Fig. 2 is the front view of the tomoscan check device shown in Fig. 1；

Fig. 3 is the left view of the tomoscan check device shown in Fig. 2.

Fig. 4 is the front view of radiation source device in Fig. 1；

Fig. 5 is the top view of radiation source device in Fig. 4；

Fig. 6 is the A-A sectional views of Fig. 4.

Embodiment

It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model Apply example, those of ordinary skill in the art's all other embodiments obtained without creative efforts, all belong to In the scope of the utility model protection.

In the following detailed description, it is proposed that many details, in order to provide the comprehensive understanding to the utility model. But it will be apparent to those skilled in the art that the utility model can be in these details be not required Implement in the case of some details.The description to embodiment is used for the purpose of carrying by showing the example of the utility model below For being better understood to the utility model.

It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the application can phase Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

The utility model embodiment provides a kind of tomoscan check device, using radiography to container into Row Tomography, the safety check operation available for places such as customs.

Referring to figs. 1 to Fig. 3, Fig. 1 is the axis of the tomoscan check device provided according to the utility model one embodiment Mapping, Fig. 2 are the front view of the tomoscan check device shown in Fig. 1, and Fig. 3 is the tomoscan check device shown in Fig. 2 Left view.The transmission device for transmitting thing to be detected is also shown in Fig. 1.

As shown in Figure 1 to Figure 3, tomoscan check device includes fixing bracket 100, rotary support 200, radiation source device 300th, detector array 400 and driving mechanism.Fixing bracket 100 is used to be used as installing matrix, including fixed part 110.Revolution branch Frame 200 has penetrating sense channel 210, and rotary support 200 can be arranged to rotation the fixed part 110 of fixing bracket 100, returns Rotation axis and the sense channel 210 for turning stent 200 are coaxial.Radiation source device 300 is arranged at rotary support 200, for providing tool There is the detection ray of 90 degree to 135 degree scanning ranges.Detector array 400 includes detector 410, detector 420 and detector Multiple detectors such as 430, multiple detectors centered on the rotation axis of rotary support 200 annular arrangement in rotary support 200, and The ray of each detector in multiple detectors receives the emission center that window is directed at radiation source device 300.Driving mechanism For driving the rotation on fixing bracket 100 of rotary support 200.Detector array 400 is used to receive to be sent out by radiation source device 300 The ray gone out, radiation source device 300 have larger angle of radiation, therefore when radiation source device 300 is arranged on rotary support 200 Ring on when, ray can cover most of section of sense channel 210, it is not necessary to will radiation source device 300 bias to revolution The outside of stent 200, can reduce device the space occupied.

Further, since radiation source device 300 has larger angle of radiation, when rotary support 200 sets less diameter Also most of section of ray covering sense channel 210 can be made so that the diameter of whole rotary support 200 can be smaller, so that Bring the mitigation of weight, and the reduction of required driving force.

Fixing bracket 100 includes 110 two parts of base and fixed part.Base is used to form stable support, fixed part 110 For connecting and fixing the other structures in tomoscan check device.In the present embodiment, fixed part 110 is cyclic structure, ring The outer circumferential surface of shape structure is connected on base, and the space in ring is used to pass through for thing to be detected.When tomoscan check device position When operating position, the cyclic structure of fixed part 110 is located in perpendicular, i.e. the axis of cyclic structure is parallel to horizontal plane.

In the present embodiment, driving mechanism is direct driving motor 500.Direct driving motor 500 includes inner stator and outer rotor, outer rotor It is sheathed on inner stator outer circumference surface, can be rotated around inner stator.Inner stator includes penetrating inner cavity, inner cavity and rotary support Sense channel is coaxial.The intracavity diameter of inner stator is suitable with the internal diameter of the cyclic structure of fixed part 110, while and rotary support 200 210 internal diameter of sense channel is suitable, is passed through for thing to be detected.

In the present embodiment, direct driving motor 500 be not only provide power component, while also as transmission parts connection and Driving rotary support 200 rotates.Specifically, inner stator is fixed on the fixed part 110 of fixing bracket 100 by its end face, is returned On the end face for turning the outer rotor that stent 200 is then fixed on direct driving motor 500.Directly driven when outer rotor is rotated around inner stator Rotary support 200 rotates.

Extra transmission mechanism is not required to drive rotary support 200 in direct driving motor 500, motor can provide in itself it is larger simultaneously And the torque stablized.

In the present embodiment, rotary support 200 is circular ring structure, its ring inner cavity is used to pass through an end face for thing to be detected It is fixed on the end face of the outer rotor of direct driving motor 500, another end face is used to install fixed detector array 400.This implementation In example, a diameter of three meters of rotary support 200.

Detector array 400 includes multiple detectors, for receiving the ray of radiation source device 300.In the present embodiment, visit Surveying device array 400 includes multiple detectors, and arrangement scope of the detector array 400 on rotary support 200 is more than or equal to revolution The half circumference of stent 200 so that radiation range is capable of the ring inner section of envelope rotary support substantially.

Detector is visited for the high-pressure aerated ionization chamber detector of single or multiple lift, scintillation array detector or semiconductor array Survey device or planar array detector, detector cells position arrange that the ray of detector connects centered on the centre of gyration of rotary support Center of the window towards radiographic source is received, i.e., detector window is perpendicular to ray.Such as, ray receives window in detector 430 431 is vertical with the ray that radiation source device 300 is sent.Radiation source device 300 and the array centre position of detector array 400 For detector 420 apart from farthest, size is slightly larger than the diameter of ring support, and remaining detector cells and source be apart from more and more nearer, The detector distance source at edge is nearest.

Transmitted intensity is inversely proportional with square distance, thus between radiation source device 300, detector array 400 distance contracting It is small to bring detector signal to increase.For example, a kind of design, the distance of radiation source device to detector is 3500, and according to this Utility model embodiment, detector 420 are 3000 with radiating the distance between source device 300；Detector 410 and detector 430 With radiation source device 300 apart from smaller.Therefore, compared with a kind of above-mentioned design, using same radiographic source, transmitted intensity The ratio between be 3500 × 3500/3000 × 3000=1.44, increase 44%.And detector 410 and detector 430 and radiation source device 300 distance is 1830, and the ratio between transmitted intensity is 3500 × 3500/1830 × 1830=3.87, and transmitted intensity is then former design 3.87 times.

Fig. 4 is the front view of radiation source device in Fig. 1, and Fig. 5 is the top view of radiation source device in Fig. 4, and Fig. 6 is Fig. 4's A-A sectional views.

Beam exposure apparatus includes the radiographic source 320 in shield 310 and the chamber being arranged inside shield 310, screen The opening 311 having on body 310 with chamber is covered, the ray radiated by opening 311 forms scanning plane, and radiation exposure Device makes radiographic source 320 be moved relative to the opening 311 by moving mechanism so that the beam exposure apparatus is configured to For：It is aligned by radiographic source 320 or deviates opening 311 and realizes being turned on or off (i.e. outwards for beam exposure apparatus shutter Transmitting detection ray stops transmitting detection ray).

One embodiment according to the present utility model, specifically, shield 310 is using the material system with shielding properties Into it is with preferable shield effectiveness and higher intensity.Such as：Lead, tungsten, metal or tungsten alloy, uranium 238 etc. can be passed through High desnity metal or alloy are made.The oval sphere structure of its main body, is mountable to the beam exposure apparatus of sense channel In mounting base, inside has the chamber for accommodating radiographic source 320, and the opening 311 set on shield 310 is according to actual irradiation Need to select to open up for round hole or in slit-shaped openings, exemplarily, as shown in Figure 1 or 2, can be in shield Opening 311 is directly opened up in 310 main bodys, certainly opening 311 position can according to the location determination of radiographic source in chamber 320, As long as it disclosure satisfy that radiographic source 320 has the first position that can be directed at opening 311 or deviates the second place of opening 311 i.e. Can.

Since the opening 311 of the utility model embodiment is opened in oval-shaped ball structure, when opening 311 is slit-shaped When, it selects to open up angle maximizing on shield 310.So that beam exposure apparatus is ensureing good shield effectiveness While can have larger subtended angle, that is, wider swept area is presented.Therefore can be arranged to as close to detection object, Reduce the space shared by whole detection device.In certain embodiments, when opening 311 is slit-shaped, and because itself has foot Enough thickness, can also use 311 collimater as beam exposure apparatus of opening, for drawing detection ray and to detecting ray Carry out shapes and sizes constraint, be collimated into ray with radiographic source 320 for vertex, whole detection object can be related to Larger sectorial area, can not only so ensure that the ray that radiographic source 320 provides does not repeat, is not hollow and without dead angle, Detection ray can again be strictly aligned with corresponding detector (not shown), improves the detection image matter of detection efficiency and presentation Amount, is detected so as to more accurately measuring targets.

The ray that shield 310 can prevent from launching in chamber is chamber from the other parts leakage in addition to opening 311 Good shielding space is provided and prevents ray leakage.Certainly, the structure of above-mentioned shield 310 is not limited to this, to ensure Its thickness is uniformly distributed and is easily installed, and the shield 310 in the present embodiment uses elliptical shape ball body structure, in other embodiments In its can also be square, cylinder or other shell structures, as long as its thickness disclosure satisfy that shielding needs.

Embodiment according to the present utility model, radiographic source 320 are installed in chamber by mounting portion, therefore above-mentioned shield Chamber inside 310 is configured accordingly according to the shape of 320 mounting portion of radiographic source.According to radiographic source 320 and opening 311 each other Mated condition form first position and the second place.And above-mentioned moving mechanism can then make radiographic source 320 relative to opening 311 Moved between the first position and the second position.

Certainly, the utility model is not limited for the type of radiographic source 320, and embodiment according to the present utility model, is penetrated Line source 320 for example can be：X-ray source or gamma ray projector.Wherein x-ray source includes X-ray machine and electron accelerator；Gamma-rays Source includes isotope radiographic source, specifically, can include：⁶⁰Co、¹³⁷Cs、¹⁹²Ir、⁷⁵Se, it is preferred to use⁶⁰Co, its energy is high, can Coordinating the relatively large angle that opening 311 provides, measuring targets are more accurately scanned to form stronger sectoring face Detection.

In an alternative embodiment, shield further includes shield door, which can close opening.Shield door can be tool There is the plate body to match with shield contour shape, so as to be slided on shield surface to cover opening.Or by opening The partly shielding effect body of side is arranged to split type and can be moved on the width in the gap of opening, so as to fulfill gap Closure and opening.

To more fully understand how the radiographic source irradiation unit of the utility model realizes the opening and closing of shutter, below will Exemplarily several beam exposure apparatus in the utility model embodiment are illustrated according to Fig. 6.

Fig. 6 is referred to, one embodiment according to the present utility model, specifically, moving mechanism are connected with radiographic source 320, Radiographic source 320 is driven to carry out straight reciprocating motion, to realize that its opposed open is in first position or the second place.Specifically Ground, as shown in the figure, to ensure stationarity and security of the radiographic source 320 in straight reciprocating motion, the chamber of shield is The cylindrical hole set perpendicular to opening 311, radiographic source 320 are slidably mounted at chamber by the mounting rod 321 that both ends connect In room, and to ensure that ray will not be leaked from through hole, mounting rod 321 is made of shielding material.Exemplarily, by 320 involucrum both ends of radiographic source set recessed socket part and the convex jointing part of mounting rod 321 to be connected, and certain radiographic source 320 can also lead to Other connection modes are crossed with mounting rod 321 to coordinate.

Above-mentioned moving mechanism is cylinder 330, and cylinder 330 is connected transmission with mounting rod 321, or passes through connecting rod and installation Bar 321 coordinates transmission indirectly, and certain the utility model is not limited the connection mode between cylinder 330 and mounting rod 321, only It can realize and removably be fixedly connected each other.Control cylinder 330 starts, and driving mounting rod 321 is in the chamber Straight reciprocating motion is carried out along its axial direction, you can is realized that radiographic source 320 moves, is cut between the first position and the second position Change.In certain embodiments, the cross section of mounting rod 321 can also be square, rectangle or other shapes, if its with Chamber, which coordinates, can realize straight reciprocating motion.

And moving mechanism can also be hydraulic cylinder either electric pushrod or electromagnet, certain hydraulic cylinder and electric pushrod Similar with cylinder 330 to the drive form of 320 mounting rod 321 of radiographic source, so it will not be repeated.Certain the utility model is for above-mentioned Moving mechanism is not limited, as long as being capable of providing drive force mounting rod 321 carries out straight reciprocating motion, realizes radiographic source 320 can be aligned or deviate opening.In other examples, other motor drive mechanisms can also be used as radiographic source 320 driving mechanism, such as indirect type of drive can also be used, exemplarily, motor driven gear and tooth can be passed through Bar structure provides the driving force of linear motion for mounting rod 321, wherein, rack is connected with mounting rod 321, and motor passes through sliding tooth Wheel rotates, and realizes that the rack engaged with gear carries out straight reciprocating motion, so as to drive mounting rod 321 to carry out linear reciprocation fortune It is dynamic.For another example driving mechanism can also use motor driving feed screw nut movement, so as to fulfill connected mounting rod 321 Radiographic source 320 is driven to carry out straight reciprocating motion.It is not necessarily intended to provide driving force by motor in certain above-mentioned driving mechanism, at it It is also an option that other can provide the mechanism of power or be substituted by manual operation in his embodiment, wherein, motor can be direct Driving can also connect retarder and be driven.

By the straight reciprocating motion of radiographic source 320 in the chamber, realize in first position alignment opening 311 or the The opening and closing of the control shutter of opening 311 are deviateed in two positions, due to small, the quality of radiographic source 320 and mounting rod 321 Gently, make the beam exposure apparatus of the utility model individually fast by being set outside device compared in conventional beam exposure apparatus Door be turned on or off structure, the opening and closing speed of shutter can be effectively improved, at the same avoid conventional shutter opening or The impact force that person's closing structure is brought in itself to device, so as to extend the service life of beam exposure apparatus.And due to shutter Opening speed it is fast, radiation subtended angle can control, therefore exemplarily, can be in driver and passenger when being detected to vehicle When driving vehicle enters sense channel, shutter opening is quickly controlled, to the car body in addition to driver's cabin and belongings progress After rapid irradiance, you can vehicle is sailed out of sense channel, dragging system can be saved, simplify the structure and section of security detection equipment Cost-saving.

The above, is only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to In this, any one skilled in the art can readily occur in various in the technical scope that the utility model discloses Equivalent modifications or substitutions, these modifications or substitutions should be covered within the scope of the utility model.Therefore, this practicality New protection domain should be subject to scope of the claims.

Claims (11)

1. A kind of 1. tomoscan check device, for carrying out safety inspection to container, it is characterised in that including：

   Fixing bracket, for as installing matrix, including fixed part；

   Rotary support, has penetrating sense channel, and the rotary support can be arranged to rotation the support bracket fastened fixation Portion, the rotation axis of the rotary support and the sense channel are coaxial；

   Radiation source device, is arranged at the rotary support, for providing the detection ray with 90 degree to 135 degree scanning ranges；

   Detector array, including multiple detectors, the multiple detector are annular centered on the rotation axis of the rotary support The rotary support is arranged in, and the ray of each detector in the multiple detector receives window and is directed at the ray The emission center of source device；

   Driving mechanism, for driving rotary support rotation on the fixing bracket.
2. 2. tomoscan check device according to claim 1, it is characterised in that the detector array is listed in the revolution Arrangement scope on stent is more than or equal to the half circumference of the rotary support.
3. 3. tomoscan check device according to claim 1 or 2, it is characterised in that the driving mechanism drives electricity to be straight Machine, including inner stator and outer rotor, the inner stator include penetrating inner cavity, and the inner cavity and the detection of the rotary support are led to Road is coaxial, and the inner stator is fixed on the fixing bracket, and the outer rotor can be rotated around the inner stator, the revolution branch Frame is coaxially coupled to the outer rotor.
4. 4. tomoscan check device according to claim 3, it is characterised in that the inner stator is connected to by end face The support bracket fastened fixed part, and/or, the rotary support is connected to the end face of the outer rotor.
5. 5. tomoscan check device according to claim 3, it is characterised in that the support bracket fastened fixed part is ring Shape, diameter are identical with the diameter of the inner stator.
6. 6. tomoscan check device according to claim 1, it is characterised in that the radiation source device includes：

   Radiographic source, ray is detected for providing；

   Shield, has chamber and the opening with the chamber, and the radiographic source is contained in the chamber, the opening Pass through for the ray for the radiographic source；

   Radiographic source drives, for driving the radiographic source to be moved between the indoor first position of the chamber and the second place；

   Wherein, the opening can be directed at when the radiographic source is located at the first position, positioned at second place when deviates institute State opening.
7. 7. tomoscan check device according to claim 6, it is characterised in that the shield further includes shield door, The shield door can close the opening.
8. 8. tomoscan check device according to claim 7, it is characterised in that the opening is in slit-shaped, so that logical The ray for crossing the opening radiation forms scanning plane.
9. 9. the tomoscan check device according to any one of claim 6 to 8, it is characterised in that of the opening Angle is between 90 degree to 135 degree.
10. 10. the tomoscan check device according to any one of claim 6 to 8, it is characterised in that the radiographic source is Isotope radiographic source.
11. 11. the tomoscan check device according to any one of claim 6 to 8, it is characterised in that the radiographic source is One of which in 60Co, 137Cs, 192Ir, 75Se.