CN209961708U - Double-visual-angle ray detection equipment - Google Patents
Double-visual-angle ray detection equipment Download PDFInfo
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- CN209961708U CN209961708U CN201920758319.9U CN201920758319U CN209961708U CN 209961708 U CN209961708 U CN 209961708U CN 201920758319 U CN201920758319 U CN 201920758319U CN 209961708 U CN209961708 U CN 209961708U
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Abstract
The utility model relates to a double-view ray detection equipment. The double-visual-angle ray detection equipment comprises a ray source for emitting a ray surface, a double-visual-angle collimator with double collimator seams and a mounting rack, wherein the mounting rack comprises a vertical detector arm stand column, a ray source side support and a main beam, a transverse detector arm is arranged below the main beam, two vertical detector arms are arranged on the vertical detector arm stand column, the connecting line between the center of a detection surface and the emission point of the ray source is perpendicular to the detection surface, two edges, close to each other, of adjacent detection surfaces and perpendicular to the extension direction of the detector arm at the position are located on the same plane with the emission point of the ray source, a plurality of detectors on the transverse detector arm are thinned by means of density change from one end, close to the ray source, of the transverse detector arm to one end, far away from the ray source, of the plurality of detectors on the vertical detector arm are thinned by means of density. The utility model discloses a double vision angle ray detection equipment's detector quantity is less, reduces ray detection equipment's cost.
Description
Technical Field
The utility model relates to a double-view ray detection equipment.
Background
The radiographic imaging technology is a technology for irradiating an object with a beam and imaging by detecting the effect of the object on rays, and commonly used rays include X rays and gamma rays, wherein the X-ray imaging technology has the advantages of low radiation dose, sensitivity to light materials and the like, and is widely applied to the fields of safety inspection of goods, vehicles and the like. The ray detection equipment is classified into X ray detection equipment and gamma ray detection equipment according to radiation source, and classified into fixed detection equipment, movable detection equipment, through type rapid detection equipment and aviation tray type detection equipment according to structure. According to the national standards, a radiation detection device for containers or vehicles generally comprises the following parts: the detection principle of the ray detection equipment is that X rays generated by the ray source are utilized to carry out linear scanning perspective on the container, X ray signals with different strengths are received by a detector array and are converted into weak electric signals through a ray detector, the electric signals are processed by an acquisition circuit and a related signal processing system and an image processing system and then are restored into perspective images of the container to be detected and are displayed on a computer screen, and forbidden articles or entrained articles hidden in the container can be distinguished from the images.
Chinese patent with publication number CN101470084B and publication number 2011.12.28 discloses a radiation detection device, which includes an arm support structure, an accelerator cabin and an accelerator disposed in the accelerator cabin, the accelerator is a radiation source, the arm support structure is a mounting rack, a radiation detector is mounted on the arm support structure, the arm support structure includes a dual-view collimator column, a main beam, a lateral detector arm, a vertical detector arm, and a vertical detector arm column, the dual-view collimator column and the vertical detector arm column form an integral gantry structure with the main beam through bolts, the lateral detector arm and the vertical detector arm are uniformly provided with radiation detectors, in order to ensure that the radiation is not leaked, the detectors on the detector arm need to be arranged in the most dense standard, the detectors are arranged more, and the cost of the radiation detection device is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a double-view ray detection equipment to solve present ray detection equipment because the detector that the detector evenly arranged and cause needs the problem that the ray detection equipment is with high costs of leading to in large quantity.
In order to achieve the above object, the utility model relates to a double-view ray detection equipment's technical scheme does: ray detection equipment is including the ray source that is used for launching the ray face, double-view collimator and the mounting bracket that has double collimator seam, the mounting bracket is including erecting detector arm stand, the ray source side supports, both ends respectively with erect the fixed girder in the upper end that detector arm stand and ray source side supported, the girder below is equipped with two horizontal detector arms, be equipped with two perpendicular detector arms on erecting the detector arm stand, horizontal detector arm and perpendicular detector arm one-to-one and corresponding horizontal detector arm and perpendicular detector arm are in same ray face, all be equipped with a plurality of detectors on horizontal detector arm and the perpendicular detector arm, the detector has the detection face of surveying the ray, detector on same horizontal detector arm or the perpendicular detector arm satisfies: the line of the center of the detection surface and the emission point of the ray source is perpendicular to the detection surface, two edges which are close to each other and extend perpendicular to the extending direction of the detector arm at the position on the adjacent detection surfaces are positioned on the same plane with the emission point of the ray source, the plurality of detectors on the transverse detector arm are distributed from one end, close to the ray source, of the transverse detector arm to one end, far away from the ray source, of the transverse detector arm, and the plurality of detectors on the vertical detector arm are distributed from one end, close to the ray source, of the vertical detector arm to one end, far away from the ray source, of the.
The utility model has the advantages that: compare with the ray detection equipment among the prior art, survey the face of line perpendicular to detection of the emission point of face center and ray source, and be close to each other on the adjacent detection face and be in the coplanar with the emission point of ray source on two limits that perpendicular to place detector arm extending direction extends, guarantee not have the ray between the adjacent detection face and reveal, and the detection face can not overlap, the utility model discloses a plurality of detectors on the horizontal detector arm of double-vision angle ray detection equipment are dredged by the one end that the horizontal detector arm is close to the ray source to the one end of keeping away from the ray source by close change, and a plurality of detectors of amount are dredged by close change to the one end of keeping away from the ray source by the one end that the vertical detector arm is close to the ray source on the vertical detector arm, and detector quantity is less, reduces ray detection equipment.
Furthermore, the ray source side supports and includes the radiation source cabin and fixes the vertical pillar at radiation source cabin top, and two visual angle collimators are fixed on the lateral wall that the radiation source cabin is close to vertical detector arm stand, and the radiation source sets up in the radiation source cabin, is equipped with the ray export that supplies the ray to penetrate in fixed two visual angle collimators on the radiation source cabin lateral wall, the ray source side supports through vertical pillar and girder fixed connection, does not need the radiation source cabin of independent setting installation radiation source, has reduced ray detection equipment's occupation space, has simplified ray detection equipment's structure, and ray source and two visual angle collimators all use the radiation source cabin as the installation benchmark, make things convenient for the alignment of ray source and two visual angle collimators, improve ray detection equipment's installation effectiveness.
Furthermore, the base of the radiation source cabin and the bottom of the vertical detector arm stand column are respectively provided with a traveling device, so that the mounting frame can be conveniently moved.
Furthermore, vertical pillar sets up the intermediate position at the radiation source cabin top, and vertical pillar is the shape of falling T with the radiation source cabin, guarantees radiation source cabin atress balance, and stability is good.
Furthermore, a lifting lug is arranged on the transverse detector arm, an adjusting long hole extending along the extension direction of the main beam is formed in the lifting lug, a fixing bolt penetrating through the adjusting long hole and fastening the transverse detector arm is arranged on the main beam, and the position of the transverse detector arm is adjusted by adjusting the position of the fixing bolt in the adjusting long hole. The adjustment of conveniently surveying horizontal detector arm and simple structure, convenient processing.
Furthermore, the double-visual-angle collimator mounting structure is adjustably assembled on the side wall of the radiation source cabin, so that the double-visual-angle collimator is conveniently mounted.
Drawings
Fig. 1 is a schematic structural diagram of a specific embodiment of the dual-view ray detection apparatus of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic diagram of the construction of the cross-detector arm of FIG. 2;
FIG. 4 is a schematic diagram of the relative positions of the radiation source and the radiation source chamber according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of detector mounting spacing according to an embodiment of the present invention;
FIG. 6 is a simplified diagram of a top view of an embodiment of the dual view ray detection apparatus of the present invention;
in the figure: 1. a mounting frame; 11. a main beam; 12. erecting a detector arm column; 13. a source-side support; 131. a radiation source cabin; 132. a vertical pillar; 14. a cross detector arm; 141. lifting lugs; 142. adjusting the long hole; 15. a vertical detector arm; 2. a dual view collimator; 3. a radiation source; 4. a detector; 41. detecting a surface; 5. a vehicle to be detected; 6. and (4) rays.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
The utility model discloses a specific embodiment of double-visual angle ray detection equipment, as shown in fig. 1 to fig. 6, double-visual angle ray detection equipment includes mounting bracket 1, set up double-visual angle collimator 2 on mounting bracket 1 and be used for launching ray face's ray source 3, double-visual angle collimator has two collimator seams, two collimator seams and two ray face one-to-ones, concrete structure is prior art, for example a double-visual angle collimator can be the collimator in the background art citation contrast file, this no longer gives unnecessary details. As shown in fig. 2, the mounting rack 1 includes a vertical detector arm column 12, a radiation source side support 13, and a main beam 11 having two ends fixed to the upper ends of the vertical detector arm column 12 and the radiation source side support 13, respectively, the main beam 11, and a gantry structure formed by the vertical detector arm column 12 and the radiation source side support 13 fixed to the two ends of the main beam 11, the mounting rack 1 has a detection channel through which a vehicle 5 to be detected passes, and the main beam 11 and the vertical detector arm column 12 are both provided with a plurality of detectors 4 corresponding to the same radiation plane. Two ray surfaces of the dual-view ray detection device in this embodiment are provided, and the two ray surfaces are specifically arranged in the prior art, and the arrangement form in the comparison document with the authorization notice number CN101470084B cited in the background art may be referred to, and is not described again. In other embodiments, of course, the dual-view ray detection device may also be a single-view ray detection device, in which case the ray source emits only one ray plane.
As shown in fig. 6, two horizontal detector arms 14 are arranged on the main beam 11, two vertical detector arms 15 are arranged on the radiation source side support 13, the horizontal detector arms 14 and the vertical detector arms 15 are in one-to-one correspondence, the corresponding horizontal detector arms 14 and the corresponding vertical detector arms 15 are located in the same radiation plane, and the detector 4 is installed on the horizontal detector arms 14 and the vertical detector arms 15. The structure of the detector 4 and the installation manner of the detector 4 are the prior art, and are not described herein again.
In order to simplify the structure of the dual-view ray detection device, the ray source side support 13 includes a ray source compartment 131 and a vertical strut 132 fixed to the top of the ray source compartment 131, the top of the vertical strut 132 is fixed to the right end of the main beam 11, the ray source side support 13 is fixedly connected to the main beam 11 through the vertical strut 132, and the horizontal cross-sectional area of the ray source compartment 131 is larger than the horizontal cross-sectional area of the vertical strut 132. The vertical strut 132 in this embodiment is located in the middle of the radiation source chamber 131, and the radiation source chamber 131 extends in the front-back direction and is in an inverted T shape with the vertical strut 132, that is, the vertical cross section of the radiation source side support 13 extending in the front-back direction is in an inverted T shape, so that the arrangement can ensure the stability of the radiation source side support 13. In other embodiments, the source side support may have other shapes, such as a vertical pillar fixed to an end of the source chamber, and the source side support may have an L-shape, while ensuring strength and use requirements.
The ray source cabin 131 is internally provided with a ray source mounting structure for mounting the ray source 3 and a double-visual angle collimator mounting structure for mounting the double-visual angle collimator 2, the double-visual angle collimator 2 is fixed on the side wall of the ray source cabin 131 close to the vertical detector arm upright post 12, and a ray outlet for emitting rays towards the detector 4 is arranged at the position where the double-visual angle collimator 2 is fixed on the side wall of the ray source cabin 131. The double-visual-angle collimator 2 and the radiation source 3 are both arranged in the radiation source cabin 131, the radiation source cabin 131 is used as an installation reference, the double-visual-angle collimator 2 and the radiation source 3 are aligned conveniently, and the installation efficiency is improved. The double-visual angle collimator fixing structure comprises an upper adjusting support and a lower adjusting support which are arranged on the side wall of the ray source cabin 131, the two ends of the collimator are respectively installed on the upper adjusting support and the lower adjusting support, adjusting bolts are arranged on the two adjusting supports, and translation and rotation adjustment of the double-visual angle collimator can be achieved by adjusting the adjusting bolts, so that the double-visual angle collimator is convenient to install. In other embodiments, the dual-view collimator mounting structure may be a screw welded to the sidewall of the radiation source cabin, or the like, and the specific position adjustment mode may also be adjustment by an adjusting screw or a telescopic rod. The radiation source mounting structure is a radiation source mounting bracket commonly used in the prior art, and is not described in detail herein.
In order to facilitate the movement of the mounting frame 1, in this embodiment, as shown in fig. 2, the base of the radiation source cabin 131 and the bottom of the vertical detector arm column 12 are both provided with a traveling device, the traveling device includes a roller, and the mounting frame 1 can be moved by the roller during use, so that the position adjustment and the use of the dual-view ray detection apparatus are facilitated.
In order to adjust the position of the detector 4 conveniently, in this embodiment, the horizontal detector arm 14 is adjustably assembled on the main beam 11, a horizontally extending lifting lug 141 is arranged on the horizontal detector arm 14, an adjusting long hole 142 extending along the extending direction of the main beam 11 is arranged on the lifting lug 141, a fixing bolt penetrating through the adjusting long hole 142 and fastening the horizontal detector arm 14 is arranged on the main beam 11, and the position of the horizontal detector arm 14 is adjusted by adjusting the position of the fixing bolt in the adjusting long hole 142. In other embodiments, the relative position relationship between the detector and the ray exit can also be ensured by the machining precision between the transverse detector arm and the main beam.
In the present embodiment, as shown in fig. 4 and 5, the dual-view ray inspection apparatus is of a side-illuminated type, and after the rays are emitted from the ray source 3, the rays are fanned out in a vertical inspection plane through the adjustment of the dual-view collimator 2, but the mounting frame 1 is of a rectangular gantry structure as a whole, so that distances and angles between the detectors 4 on the horizontal detector arm 14 and the vertical detector arm 15 and the ray source 3 are different everywhere, in the present embodiment, the arrangement of the detectors 4 on the two detector arms is not uniform, as shown in fig. 3 to 5, a plurality of detectors 4 are arranged on the horizontal detector arm 14 and the vertical detector arm 15, for the horizontal detector arm 14, the distance between the detectors 4 close to the ray source 3 is smaller than the distance between the detectors 4 far from the ray source 3, and for the vertical detector arm 15, the distance between the upper detectors 4 is larger than the distance between the lower detectors 4, the imaging quality is improved while the ray leakage is avoided. The detector 4 has a detection surface 41 for detecting rays, specifically, a connection line between the center of the detection surface 41 and the radiation source 3 is perpendicular to the detection surface 41, and two sides of the adjacent detection surfaces 41, which are close to each other and extend perpendicular to the extending direction of the detector arm, are located on the same plane as the emission point of the radiation source 3, so as to ensure that the adjacent detection surfaces 41 do not overlap and no rays leak from between the adjacent two detection surfaces 41, because the connection line between the center of the detection surface 41 and the radiation source is perpendicular to the detection surface, the inclination angle of the detection surface 41 gradually changes along with the change of the rays, and only the pitch layout of the detector is displayed in fig. 2, not the actual angle change. On the premise, a plurality of detectors on the same transverse detector arm 14 are changed from dense to sparse from one end, close to the ray source 3, of the transverse detector arm 14 to one end, far away from the ray source 3, of the transverse detector arm 14, and a plurality of detectors 4 on the same vertical detector arm 15 are changed from dense to sparse from one end, close to the ray source 3, of the vertical detector arm 15 to one end, far away from the ray source 3, so that the number of the detectors is minimized as much as possible, and the cost of ray detection equipment is reduced. The density of the detectors in this embodiment means the number of detectors mounted per unit length of the detection arm, and the number of regions where the detectors are mounted densely is large.
In other embodiments, besides the scheme of combining the radiation source cabin and the vertical strut, the radiation source side support in the mounting rack may also adopt the structure of the integral vertical column and the radiation source cabin on one side of the vertical column, which is adopted in the reference cited in the background art. In other embodiments, the rollers may be omitted as needed, and a special transport vehicle is required for moving the radiation detection device.
Claims (6)
1. Double-visual angle ray detection equipment, including the ray source that is used for launching the ray face, double-visual angle collimater and mounting bracket that have double collimator seam, the mounting bracket is including erecting detector arm stand, ray source side support, both ends respectively with erect the fixed girder in the upper end that detector arm stand and ray source side supported, the girder below is equipped with two horizontal detector arms, be equipped with two perpendicular detector arms on erecting the detector arm stand, horizontal detector arm and perpendicular detector arm one-to-one and corresponding horizontal detector arm and perpendicular detector arm are in same ray face, all be equipped with a plurality of detectors on horizontal detector arm and the perpendicular detector arm, the detector has the detection face of surveying the ray, its characterized in that: the detectors on the same horizontal detector arm or vertical detector arm meet: the line of the center of the detection surface and the emission point of the ray source is perpendicular to the detection surface, two edges which are close to each other and extend perpendicular to the extending direction of the detector arm at the position on the adjacent detection surfaces are positioned on the same plane with the emission point of the ray source, the plurality of detectors on the transverse detector arm are distributed from one end, close to the ray source, of the transverse detector arm to one end, far away from the ray source, of the transverse detector arm, and the plurality of detectors on the vertical detector arm are distributed from one end, close to the ray source, of the vertical detector arm to one end, far away from the ray source, of the.
2. The dual view ray detection apparatus of claim 1, wherein: the radiation source side support comprises a radiation source cabin and a vertical strut fixed at the top of the radiation source cabin, the double-view collimator is fixed on the side wall, close to the vertical detector arm stand column, of the radiation source cabin, the radiation source is arranged in the radiation source cabin, a radiation outlet for emitting radiation is arranged at the position, close to the vertical detector arm stand column, of the radiation source cabin, a radiation outlet for emitting the radiation is formed in the position, close to the fixed double-view collimator, of the side wall of the radiation source cabin, and the radiation.
3. The dual view ray detection apparatus of claim 2, wherein: and the base of the radiation source cabin and the bottom of the vertical column of the vertical detector arm are both provided with a walking device.
4. The dual view ray detection apparatus of claim 2 or 3, wherein: the vertical strut is arranged in the middle of the top of the radiation source cabin, and the vertical strut and the radiation source cabin are in an inverted T shape.
5. The dual view ray detection apparatus of claim 1, 2 or 3, wherein: the horizontal detector arm is provided with a lifting lug, the lifting lug is provided with an adjusting long hole extending along the extension direction of the main beam, the main beam is provided with a fixing bolt which penetrates through the adjusting long hole to fasten the horizontal detector arm, and the position of the horizontal detector arm is adjusted by adjusting the position of the fixing bolt in the adjusting long hole.
6. The dual view ray detection apparatus of claim 1, 2 or 3, wherein: the double-view collimator is adjustably assembled on the side wall of the radiation source cabin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821739151 | 2018-10-25 | ||
| CN2018217391519 | 2018-10-25 |
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| CN209961708U true CN209961708U (en) | 2020-01-17 |
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| CN201920758319.9U Active CN209961708U (en) | 2018-10-25 | 2019-05-24 | Double-visual-angle ray detection equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023125131A1 (en) * | 2021-12-30 | 2023-07-06 | 同方威视科技（北京）有限公司 | Radiation inspection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023125131A1 (en) * | 2021-12-30 | 2023-07-06 | 同方威视科技（北京）有限公司 | Radiation inspection system |
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