CN209961708U - Double viewing angle ray inspection equipment - Google Patents

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

Double viewing angle ray inspection equipment

technical field

The utility model relates to a double viewing angle ray detection device.

Background technique

X-ray imaging technology is a technology that uses a ray beam to irradiate an object and image by detecting the effect of the object on the ray. The commonly used rays include X-ray and γ-ray, among which X-ray imaging technology has the advantages of low radiation dose and sensitivity to light materials. , is widely used in the fields of cargo, vehicle safety inspection and so on. According to the classification of radiation sources, ray detection equipment is divided into X-ray detection equipment and γ-ray detection equipment, and according to the structure classification, it is divided into fixed detection equipment, mobile detection equipment, pass-through rapid detection equipment and aviation pallet detection equipment. According to national standards, radiation detection equipment for containers or vehicles usually includes the following parts: radiation source, radiation detection and imaging system, scanning device and control system, imaging display system, safety interlocking device and radiation protection facilities, detection principle of radiation detection equipment It uses the X-ray generated by the ray source to perform linear scanning and perspective on the container, and receives X-ray signals with different strengths through the detector array. These signals are converted into weak electrical signals by the ray detector, and the electrical signals are then passed through the acquisition circuit and After processing by the relevant signal processing system and image processing system, it is restored to a perspective image of the inspected container and displayed on the computer screen, from which the prohibited items or entrained items hidden in the container can be distinguished.

The Chinese patent with the authorization announcement number CN101470084B and the authorization announcement date of 2011.12.28 discloses a ray detection device. The ray detection device includes a boom structure, an accelerator cabin and an accelerator arranged in the accelerator cabin. The accelerator is a ray source and a boom. The structure is the mounting frame. The ray detector is installed on the boom structure. The boom structure includes a double-view collimator column, a main beam, a horizontal detector arm, a vertical detector arm, and a vertical detector arm column. The double-view collimation The detector column and the vertical detection arm column form an integral gantry structure with the main beam through bolts, and ray detectors are evenly arranged on the horizontal detector arm and the vertical detector arm. In order to ensure that the radiation does not leak, the detector on the detector arm needs to be The densest standard layout has many detectors, which causes the problem of high cost of ray detection equipment.

Utility model content

The purpose of the present utility model is to provide a dual-view ray detection device, so as to solve the problem of high cost of the ray detection device due to the large number of detectors required due to the uniform arrangement of the detectors in the current ray detection device.

In order to achieve the above purpose, the technical scheme of a dual-view ray detection device of the present invention is as follows: the ray detection device includes a ray source for emitting a ray surface, a dual-view collimator with dual collimator slits, and a mounting frame, The mounting frame includes a vertical detector arm column, a ray source side support, and a main beam whose two ends are respectively fixed to the vertical detector arm column and the upper end of the ray source side support. Two transverse detector arms are arranged below the main beam, and the vertical detector There are two vertical detector arms on the arm column, the horizontal detector arm and the vertical detector arm are in one-to-one correspondence and the corresponding horizontal detector arm and the vertical detector arm are in the same ray plane, and the horizontal detector arm and the vertical detector arm are in the same ray plane. There are multiple detectors on the detector arms. The detectors have a detection surface for detecting rays. The detectors on the same horizontal detector arm or vertical detector arm satisfy: the connection between the center of the detection surface and the emission point of the ray source The two sides that are perpendicular to the detection surface, and the adjacent detection surfaces are close to each other and extend perpendicular to the extending direction of the detector arm are on the same plane as the emission point of the ray source. The detector arm from the end close to the ray source to the end far from the ray source changes from dense to sparse, and the multiple detectors on the vertical detector arm change from dense to sparse from the end of the vertical detector arm close to the ray source to the end away from the ray source.

The beneficial effects of the present utility model: compared with the radiation detection equipment in the prior art, the line connecting the center of the detection surface and the emission point of the radiation source is perpendicular to the detection surface, and the adjacent detection surfaces are close to each other and perpendicular to the detector where they are located. The two sides extending in the extension direction of the arm and the emission point of the ray source are on the same plane, so as to ensure that there will be no ray leakage between adjacent detection surfaces, and the detection surfaces will not overlap. The multiple detectors on the detector arm change from dense to sparse from the end of the horizontal detector arm close to the ray source to the end far from the ray source, and the multiple detectors on the vertical detector arm from the end of the vertical detector arm close to the ray source To the end far from the ray source, the density becomes sparse, the number of detectors is less, and the cost of the ray detection equipment is reduced.

Further, the side support of the ray source includes a ray source cabin and a vertical column fixed on the top of the ray source cabin. In the ray source cabin, the side wall of the ray source cabin is provided with a ray outlet for ray emission at the fixed dual-view collimator, and the side support of the ray source is fixedly connected to the main beam through the vertical support, and there is no need to set up and install the ray independently. The ray source cabin of the source reduces the occupied space of the ray detection equipment and simplifies the structure of the ray detection equipment. Alignment, improve the installation efficiency of radiation detection equipment.

Further, the base of the ray source cabin and the bottom of the vertical detector arm column are provided with walking devices to facilitate the movement of the mounting frame.

Further, the vertical struts are arranged in the middle of the top of the ray source cabin, and the vertical struts and the ray source cabin are in an inverted T shape to ensure that the ray source cabin bears a balanced force and has good stability.

Further, the transverse detector arm is provided with a lifting lug, the lifting lug is provided with an adjustment long hole extending along the extension direction of the main beam, and the main beam is provided with a fixing bolt that passes through the adjustment long hole to fasten the transverse detector arm. , the position of the transverse detector arm can be adjusted by adjusting the position of the fixing bolt in the adjustment long hole. The adjustment of the probe arm is convenient, the structure is simple, and the processing is convenient.

Further, the installation structure of the dual-view collimator can be adjusted and assembled on the side wall of the ray source cabin to facilitate the installation of the dual-view collimator.

Description of drawings

1 is a schematic structural diagram of a specific embodiment of a dual-view ray detection device of the present invention;

Fig. 2 is the left side view of Fig. 1;

Fig. 3 is the structural representation of the horizontal detector arm in Fig. 2;

4 is a schematic diagram of the relative positions of the ray source and the ray source cabin according to the specific embodiment of the present invention;

5 is a schematic diagram of the installation spacing of the detectors according to the specific embodiment of the present invention;

6 is a simplified diagram of a top view of a specific embodiment of the dual-view ray detection device of the present invention;

In the figure: 1. Mounting frame; 11. Main beam; 12. Vertical detector arm column; 13. Radiation source side support; 131. Radiation source cabin; 132. Vertical pillar; 14. Horizontal detector arm; ear; 142. Adjusting long hole; 15. Vertical detector arm; 2. Double viewing angle collimator; 3. Radiation source; 4. Detector; 41. Detection surface; 5. Vehicle to be detected; 6. Ray.

Detailed ways

The embodiments of the present utility model will be further described below with reference to the accompanying drawings.

A specific embodiment of the dual-view ray detection device of the present invention, as shown in FIG. 1 to FIG. 6 , the dual-view ray detection device includes an installation frame 1 , a dual-view collimator 2 arranged on the installation frame 1 , and a dual-view collimator 2 for transmitting The ray source 3 on the ray exit surface, the dual-view collimator has two collimator slits, and the two collimator slits correspond to the two ray surfaces one-to-one, and the specific structure is the prior art, such as a dual-view collimator The collimator may be the collimator in the referenced documents of the background art, which will not be repeated here. As shown in FIG. 2 , the mounting frame 1 includes a vertical detector arm column 12 , a radiation source side support 13 , and a main beam 11 whose two ends are respectively fixed to the upper ends of the vertical detector arm column 12 and the radiation source side support 13 . The main beam 11 , The gantry structure formed by the vertical detector arm uprights 12 and the ray source side supports 13 fixed at both ends of the main beam 11, the mounting frame 1 has a detection channel for the vehicle 5 to be detected, and the main beam 11 and the vertical detector arm uprights 12. Each of them is provided with a plurality of detectors 4 corresponding to the same ray plane. The dual-view ray detection device in this embodiment has two ray planes, and the specific arrangement of the two ray planes is in the prior art. Refer to the layout form in the comparative document with the authorization bulletin number CN101470084B cited in the background art, No longer. In other embodiments, of course, the dual-view ray detection device may also be a single-view detection device, and in this case, the ray source only emits one ray plane.

As shown in FIG. 6 , the main beam 11 is provided with two horizontal detector arms 14 , and the radiation source side support 13 is provided with two vertical detector arms 15 , and the horizontal detector arms 14 and the vertical detector arms 15 are in one-to-one correspondence And the corresponding horizontal detector arm 14 and the vertical detector arm 15 are in the same ray plane, and the detector 4 is installed on the horizontal detector arm 14 and the vertical detector arm 15 . The structure of the detector 4 and the installation method of the detector 4 are all in the prior art, and will not be repeated here.

In order to simplify the structure of the dual-view ray detection equipment, the ray source side support 13 includes a ray source cabin 131 and a vertical pillar 132 fixed on the top of the ray source cabin 131. The top of the vertical pillar 132 is fixed on the right end of the main beam 11, and the ray source The side supports 13 are fixedly connected to the main beam 11 through the vertical struts 132 , and the horizontal cross-sectional area of the ray source cabin 131 is larger than the horizontal cross-sectional area of the vertical struts 132 . In this embodiment, the vertical support 132 is located in the middle of the ray source cabin 131 . The ray source cabin 131 extends in the front-rear direction and is in an inverted T shape with the vertical support 132 , that is, the vertical support 13 extends along the front-rear direction. The cross section is in an inverted T shape, and this arrangement can ensure the stability of the radiation source side support 13 . In other embodiments, under the condition of ensuring strength and usage requirements, the ray source side support can also be in other shapes, for example, a vertical support is fixed at one end of the ray source cabin, and the ray source side support is L-shaped at this time.

The ray source cabin 131 has a ray source installation structure for installing the ray source 3 and a dual-view collimator installation structure for installing the dual-view collimator 2. The dual-view collimator 2 is fixed in the ray source cabin 131 close to the vertical On the side wall of the detector arm column 12 and the side wall of the ray source cabin 131 , where the dual-view collimator 2 is fixed, a ray outlet for emitting rays toward the detector 4 is provided. Both the dual-view collimator 2 and the ray source 3 are arranged in the ray source cabin 131, and both use the ray source cabin 131 as the installation reference, which facilitates the alignment of the dual-view collimator 2 and the ray source 3 and improves the installation efficiency. In this embodiment, the dual-view collimator fixing structure includes an upper adjustment support and a lower adjustment support arranged on the side wall of the ray source cabin 131, and the two ends of the collimator are respectively installed on the upper adjustment support and the lower adjustment support The two adjustment supports are provided with adjustment bolts. By adjusting the adjustment bolts, the translation and rotation adjustment of the dual-view collimator can be realized, which is convenient for the installation of the dual-view collimator. In other embodiments, the installation structure of the dual-view collimator may be a screw or the like welded on the side wall of the ray source cabin, and the specific position adjustment method may also be adjusted by adjusting a screw rod or a telescopic rod. The ray source installation structure is a ray source installation bracket commonly used in the prior art, which will not be described in detail here.

In order to facilitate the movement of the mounting frame 1 , in this embodiment, as shown in FIG. 2 , the base of the ray source cabin 131 and the bottom of the vertical detector arm column 12 are provided with walking devices. The walking devices include rollers, which can be moved by the rollers during use. The mounting bracket 1 is convenient for the position adjustment and use of the dual-view ray detection equipment.

In order to facilitate the adjustment of the position of the detector 4, in this embodiment, the horizontal detector arm 14 is adjustable and assembled on the main beam 11, the horizontal detector arm 14 is provided with a horizontally extending lifting lug 141, and the lifting lug 141 is provided with an edge The adjustment long hole 142 extends in the extension direction of the main beam 11. The main beam 11 is provided with a fixing bolt that passes through the adjustment long hole 142 to fasten the transverse detector arm 14, and the transverse detector arm 14 is adjusted in the adjustment long hole 142 by the fixing bolt. position to achieve its position adjustment. In other embodiments, the relative positional relationship between the detector and the ray exit can also be guaranteed by the machining accuracy between the transverse detector arm and the main beam.

As shown in FIG. 4 and FIG. 5 , in this embodiment, the dual-view ray detection device is a side-illuminated type, and after the rays are emitted from the ray source 3 , the rays are fanned out in the vertical detection plane through the adjustment of the dual-view collimator 2 , but the overall mounting frame 1 is a square gantry structure. Therefore, the distance and angle between the detector 4 on the horizontal detector arm 14 and the vertical detector arm 15 and the ray source 3 are different everywhere. The arrangement of the detector 4 on the two detector arms is not uniform. As shown in Figures 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, wherein the distance between the detectors 4 close to the radiation source 3 is smaller than the distance between the detectors 4 far from the radiation source 3, and for the vertical detector arm 15, the distance between the upper detectors 4 is greater than the lower detectors 4 The distance between 4 ensures that the radiation is not leaked and the imaging quality is improved. The detector 4 has a detection surface 41 for detecting rays. Specifically, the connection line between the center of the detection surface 41 and the radiation source 3 is perpendicular to the detection surface 41, and the adjacent detection surfaces 41 are close to each other and extend perpendicular to the extending direction of the detector arm. The two sides of the ray source 3 are on the same plane as the emission point of the ray source 3 to ensure that the adjacent detection surfaces 41 do not overlap and no radiation leaks from between the two adjacent detection surfaces 41. Since the center of the detection surface 41 is connected to the ray source It is perpendicular to the detection surface, so the inclination angle of the detection surface 41 changes gradually with the change of the ray. FIG. 2 only shows the spacing layout of the detectors, not the actual angle change. Under this premise, the multiple detectors on the same horizontal detector arm 14 change from dense to sparse from the end of the horizontal detector arm 14 close to the ray source 3 to the end far from the ray source 3 . The plurality of detectors 4 are changed from dense to sparse from the end of the vertical detector arm 15 close to the ray source 3 to the end far from the ray source 3, so as to minimize the number of detectors as much as possible and reduce the cost of the ray detection equipment. The density of the detectors in this embodiment refers to the number of detectors installed per unit length of the detection arm, and the number of areas where the detectors are installed is relatively large.

In other embodiments, in addition to the combination of the ray source cabin and the vertical strut, the ray source side support in the mounting frame can also use the integral time column and the ray on the side of the column used in the reference documents cited in the background art. The structure of the source cabin. In other embodiments, according to the needs of use, the rollers may also be omitted. In this case, the movement of the radiation detection equipment requires a special transport vehicle.

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.

Images