CN218156140U

CN218156140U - Beam inclination indicator

Info

Publication number: CN218156140U
Application number: CN202222284603.1U
Authority: CN
Inventors: 陈乐�
Original assignee: Shanghai Special Equipment Supervision and Inspection Technology Institute
Current assignee: Shanghai Special Equipment Supervision and Inspection Technology Institute
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2022-12-27
Anticipated expiration: 2032-08-30

Abstract

The utility model discloses a beam inclination angle indicator, which is characterized by comprising a bearing plate and an indicator body, wherein the indicator body is arranged in the bearing plate and comprises a central cylinder and a plurality of groups of concentric rings taking the center of the central cylinder as the circle center; and spaces are arranged between the central cylinder and the adjacent circular rings and between the two adjacent circular rings. The utility model discloses can effectively survey bundle of rays that the ray machine launches and play bundle window or throw the inclination scope between the perpendicular, the loading board can effectively fix and protect the indicator, prevents to use wearing and tearing production measuring error for a long time.

Description

Beam inclination indicator

Technical Field

The utility model relates to a bundle of rays inclination indicator, especially one kind is used for measuring whether perpendicular or the inclination of bundle of rays is at the indicator of regulation within range when ray detection, belongs to ray detection technical field.

Background

In the ray detection, a ray beam penetrates through a workpiece to carry internal information of the workpiece to reach an imaging device for imaging, and whether related defects exist in the workpiece can be identified. The vertical projection of ray beams is ensured, the detection rate of specific defects is improved, and the structural form is reflected truly; when double-wall double-shadow transillumination is carried out, the actual position of a ray central beam needs to be known so as to set a reasonable eccentricity; due to manufacturing deviation or use influence of the ray machine, the central beam is often not completely vertical to the beam outlet window, and the imaging quality is influenced by the shift of the transillumination field caused by too large inclination angle. Aiming at the defects of the prior art, a beam inclination angle indicator is needed to be designed to know or measure the inclination angle between a beam emitted by a ray machine and a window or a projection vertical plane.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: in the radiation detection, it is determined whether the radiation beam is vertical or the inclination angle is within a predetermined range.

In order to solve the technical problem, the technical scheme of the utility model is to provide a bundle of rays inclination indicator, which is characterized in that the indicator comprises a bearing plate and an indicator body, wherein the indicator body is arranged in the bearing plate and comprises a central cylinder and a plurality of groups of concentric rings which take the center of the central cylinder as the circle center; and spaces are arranged between the central cylinder and the adjacent circular rings and between the two adjacent circular rings.

Preferably, the distance between the central cylinder and the adjacent circular rings and the distance between the two adjacent circular rings are sequentially increased by 2 times from inside to outside.

Preferably, the bearing plate is of a cuboid structure; the height of the bearing plate is higher than that of the central cylinder and each ring; the length and width of the bearing plate are larger than the diameter of the outermost ring.

Preferably, the indicator further comprises a mark, wherein the mark comprises a horizontal side mark and a vertical side mark, and the mark is respectively arranged in the horizontal direction and the vertical direction of the depression surface of the indicator.

Preferably, the mark is formed by a type commonly used for ray detection.

Preferably, the distance between the mark and the bottom surface of the bearing plate is set to be within 2 mm.

Preferably, the mark comprises a slash and numerical values positioned in front of and behind the slash; the numerical value before the slash represents the distance between the central cylinder and each concentric ring from inside to outside, and the numerical value after the slash represents the height of the central cylinder and each concentric ring.

Preferably, the height of the central cylinder is the same as the height of each ring.

Preferably, the carrier plate is made of a transparent material and has a low absorption coefficient for rays.

Preferably, the central cylinder and the circular ring are both made of carbon steel.

The utility model discloses an indicator body constitutes for specific interval, the series of concentric circles of height, and the indicator loading board is used for fixed and protection indicator body.

The utility model discloses an indicator is arranged in formation of image in the ray transillumination field, if the bundle of rays has certain inclination, adjacent concentric circles is because the high projected of self blocks, then can't distinguish adjacent ring interval in the ray image of acquisition. The range of the beam inclination angle can be finally indicated according to the distinguished concentric ring grades.

The utility model discloses following beneficial effect has: this a bundle of rays inclination's indicator for during ray detection, the bundle of rays that can effectively survey the ray machine and play bundle of windows or throw the inclination angle scope between the perpendicular, the loading board can effectively fix and protect the indicator, prevents to use for a long time that wearing and tearing produce measuring error.

Drawings

FIG. 1 is a perspective view of a beam tilt indicator;

FIG. 2 is a side view of a beam tilt indicator;

FIG. 3 is a top view of a beam tilt indicator;

FIG. 4 is a schematic view of an indicator image during vertical transillumination of a ray bundle;

FIG. 5 is a schematic view of an indicator image during small-angle oblique transillumination of a ray bundle;

FIG. 6 is a schematic diagram of the indicator image during the large-angle oblique transillumination of the ray bundle.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

The utility model provides a bundle of rays inclination indicator, as shown in the figure, it includes loading board 1, indicator body 2, sign 3. The indicator body 2 is completely sealed within the carrier plate 1.

The indicator body 2 is composed of a central cylinder 2-1 and 5 groups of concentric rings (namely a first ring 2-2, a second ring 2-3, a third ring 2-4, a fourth ring 2-5 and a fifth ring 2-6) taking the center of the central cylinder 2-1 as the center of a circle, more than 5 groups of concentric rings can be arranged according to actual requirements, the material of the central cylinder 2-1 and the material of the rings are carbon steel, and the center of the bearing plate 1 is taken as the center.

The size of the central cylinder 2-1 is set to be 10 x 10mm. The height of the 5 sets of concentric rings can be any value, but the height affects the range of the angle of inclination that can be distinguished, the higher the height, the narrower the range of the angle, therefore, the design can be 5-20mm, in this embodiment, 10mm is taken as an example for design. The thickness in the horizontal direction is set to 1-2mm (in this embodiment, set to 2 mm), and 5 groups of gaps formed by the central cylinder 2-1 and the adjacent rings are respectively set to 0.5mm from inside to outside (considering the influence of the processing precision, smaller gaps cannot be achieved, and after the gaps are increased, the range of the indication angle is larger, and here series of numerical values should be fixed), 1mm, 2mm, 4mm, and 8mm. If bundle of rays slope transillumination extremely the utility model discloses an indicator because the existence of ring self height, then can't complete discernment corresponding concentric circles interval in the indicator image of projection to on the ray receiving device. The number of the concentric ring groups can be increased outside the outermost ring (i.e. the fifth ring 2-6 in this embodiment) according to actual requirements, and the distance is multiplied by 2 (i.e. between two adjacent distances, the distance of the outer ring is twice as long as the distance of the inner ring).

The carrier plate 1 is made of a transparent material with a low absorption coefficient for radiation, and is used for fixing the indicator body 2 and the mark 3 and preventing the indicator body and the mark from being worn. The shape of loading board 1 is the stand that the cross-section is the square, and the height is 15mm (here height should match with concentric ring self height value in last section, guarantees to seal the concentric ring), and the length and width adds 20mm for the diameter of outer lane ring (considering to be closed the ring, consequently, outer lane ring diameter adds 20 mm).

The mark 3 consists of a horizontal side mark 3-2 and a vertical side mark 3-1, and is formed by common type characters for ray detection, and the horizontal and vertical directions of the overlooking surface of the indicator are respectively arranged, so that a complete direction or half of marks in each direction can be identified during oblique transillumination imaging. Sign 3 sets up to within 2mm with 1 bottom surface interval of loading board, sign projection to ring image area when preventing to incline transillumination formation of image.

The 5-digit numerical value in front of the identification slash represents the distance between the central cylinder 2-1 and each concentric ring from inside to outside, and the numerical value behind the slash represents the height of each indicator (namely the height of the central cylinder 2-1 and each concentric ring).

The utility model discloses the specific operation does:

in the use, at first will the utility model discloses an indicator is arranged in between ray apparatus and the image device, hugs closely the image device and places, and keeps indicator and image device and ray apparatus to go out the beam window perpendicularly, the central cylinder 2-1 and the coincidence of beam window central line of indicator. And starting the ray machine and setting proper transillumination parameters to obtain a film or a digital image containing an indicator image. If the distance between the central cylinder 2-1 and the adjacent circular rings in the image and the distance between the adjacent circular rings can be clearly identified, as shown in fig. 4, the inclination angle of the ray bundle is 0 degree; if the circle interval of the inner side of the circle in the image can not be distinguished in a whole circle, the ray bundle inclines for a certain angle, and the numerical value of the inclination angle is determined according to the interval which can not be identified in the whole circle. Wherein 5 interclass apart from interior to exterior inclination angle scope that can distinguish respectively do:

0～2.86°(tan ^-1 (0.5/10))，

0～5.71°(tan ^-1 (1/10))，

0～11.31°(tan ^-1 (2/10))，

0～21.80°(tan ^-1 (4/10))，

0～38.66°(tan ^-1 (8/10))。

for example, as shown in fig. 5, if the two groups of inner pitches cannot be distinguished in a whole circle, the corresponding inclination angle is 5.71-11.31 degrees, and the inclination angle is increased; as shown in fig. 6, if all the pitches cannot be distinguished in a full circle, the corresponding inclination angle is larger than 38.66 °. In addition, the number of the ring groups can be increased or the distance between the rings can be adjusted to meet different detection requirements.

Claims

1. A beam inclination indicator is characterized by comprising a bearing plate (1) and an indicator body (2), wherein the indicator body (2) is arranged in the bearing plate (1), and the indicator body (2) comprises a central cylinder (2-1) and a plurality of groups of concentric rings which take the center of the central cylinder (2-1) as the center of a circle; and spaces are arranged between the central cylinder (2-1) and the adjacent circular rings and between the two adjacent circular rings.

2. A beam inclination indicator according to claim 1, characterized in that the distance between the central cylinder (2-1) and its adjacent rings and between two adjacent rings increases by a factor of 2 from inside to outside.

3. A beam inclination indicator according to claim 1, characterized in that the carrier plate (1) is of rectangular parallelepiped construction; the height of the bearing plate (1) is higher than that of the central cylinder (2-1) and each circular ring; the length and the width of the bearing plate (1) are all larger than the diameter of the outermost ring.

4. The beam tilt indicator of claim 1, further comprising marks (3), wherein the marks (3) are composed of horizontal side marks (3-2) and vertical side marks (3-1), and are respectively disposed in both horizontal and vertical directions of a plane of elevation of the indicator.

5. A beam inclination indicator according to claim 4, characterized in that said marking (3) is constituted by a type commonly used in radiology.

6. A beam inclination indicator according to claim 4, characterized in that the distance between the marking (3) and the bottom surface of the carrier plate (1) is set to be within 2 mm.

7. A beam inclination indicator according to claim 4, characterized in that said markers (3) comprise a stroke and values located before and after the stroke; the numerical value before the slash represents the distance between the central cylinder (2-1) and each concentric ring from inside to outside, and the numerical value after the slash represents the self height of the central cylinder (2-1) and each concentric ring.

8. A beam inclination indicator according to claim 1, characterized in that the central cylinder (2-1) and the rings have the same height.

9. A beam inclination indicator according to claim 1, characterized in that the carrier plate (1) is made of a transparent material with a low absorption coefficient for radiation.

10. The inclination indicator of a bundle of rays according to claim 1, characterized in that the central cylinder (2-1) and the circular ring are made of carbon steel.