CN215727799U - Device for measuring inclination angle and transillumination focal length of radiographic tube head - Google Patents
Device for measuring inclination angle and transillumination focal length of radiographic tube head Download PDFInfo
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- CN215727799U CN215727799U CN202121065637.0U CN202121065637U CN215727799U CN 215727799 U CN215727799 U CN 215727799U CN 202121065637 U CN202121065637 U CN 202121065637U CN 215727799 U CN215727799 U CN 215727799U
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Abstract
The utility model relates to the technical field of engineering measurement, in particular to a device for measuring the inclination angle and the transillumination focal length of a radiographic head, which comprises a plate body, a rod body and a fixing piece; the bottom of the plate body is a straight edge, a central point is arranged on the plate body close to the bottom, and an arc-shaped slot with the central point as a circle center is formed in the plate body; scale marks are arranged around the arc-shaped open groove; one end of the rod body is rotatably connected to the central point; the fixing piece is connected to the rod body and is detachably and fixedly connected with the arc-shaped open groove; according to the utility model, the bottom is a straight edge and matched with the annular groove, so that the plate body can form a structure similar to a 90-degree angle ruler, and an accurate angle can be formed by matching the rod body and the fixing piece; the problem of inaccurate inclination angle of double-wall single-image transillumination of the welding seam is solved, the radiographic inspection quality is ensured, and the qualification rate of the negative film can be greatly improved; the method is suitable for the ray transillumination modes of different angles such as double-arm single-shadow transillumination, small-diameter pipe weld fillet weld T-shaped weld and the like.
Description
Technical Field
The utility model relates to the technical field of engineering measurement, in particular to a device for measuring the inclination angle and the transillumination focal length of a radiographic head.
Background
Due to the reasons of structural welding method process requirements and the like, double-wall single-ray transillumination is carried out on a detection welding seam of a box beam, a small-diameter pipe and an angle butt joint T-shaped welding seam, and strict requirements are provided for the contrast ratio and the geometric unclear degree of the welding seam of a transillumination negative film under the requirement of a detection standard. The accuracy of adjusting the inclination angle and the transillumination focal length of the radiographic tube head is particularly important in work, and the prior art realizes the adjustment by two means.
In the first prior art, when a workpiece such as a transillumination box body, a pipe and the like which needs to measure a transillumination angle is subjected to transillumination, the transillumination angle generally cannot reach an accurate transillumination angle easily, and the transillumination angle is determined by the experience of a detector through visual observation;
however, the disadvantages of the first prior art include
1. The difference between the transillumination angle and the actually required angle is large, and the center positioning of the pipe head is inaccurate.
2. The radiographic film after transillumination hardly meets the standard requirements, and welding seam superposition or detection welding seam is easy to appear on the film.
3. The repeated shooting of the ray negative is easy to cause, the detection time is increased, and the ray radiation transillumination measurement of the detection personnel is increased.
The second prior art uses a box ruler to measure the transillumination focal length while aligning the tilt angle when determining the transillumination focal length.
However, the disadvantages of the second prior art include
1. The accurate transillumination focal length can be measured only when the inclination angle is correct, and the transillumination focal length can be greatly changed when the inclination angle is slightly changed.
2. The method has long operation time, is easy to generate the radiographic film with unqualified detection, and has low detection efficiency.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to provide a device for determining the inclination angle and the transillumination focal length of a radiographic head.
In order to solve the technical problems, the utility model adopts the technical scheme that:
the device for measuring the inclination angle and the transillumination focal length of the radiographic tube head comprises a plate body, a rod body and a fixing piece;
the bottom of the plate body is a straight edge, a central point is arranged on the plate body close to the bottom, and an arc-shaped slot with the central point as a circle center is formed in the plate body;
scale marks are arranged around the arc-shaped open groove;
one end of the rod body is rotatably connected to the central point;
the fixing piece is connected on the rod body and forms detachable fixed connection with the arc-shaped open groove.
The utility model has the beneficial effects that: the bottom is a straight edge and matched with the annular groove, so that the plate body can form a structure similar to a 90-degree angle ruler, and an accurate angle can be formed by matching the rod body and the fixing piece; the welding line detection through the structure is simple to operate, the negative plate meets the detection standard requirement, the problem that the inclination angle of double-wall single-image transillumination of the welding line is inaccurate is solved, the ray detection quality is ensured, and the qualification rate of the negative plate can be greatly improved; simple structure, convenient to use, great promotion efficiency is applicable to the ray transillumination mode of different angles such as both arms list shadow transillumination and path pipe welding seam fillet weld T type welding seam.
Drawings
FIG. 1 is a schematic structural diagram of a device for measuring the tilt angle and transillumination focal length of a tube head according to an embodiment of the present invention;
description of reference numerals: 1. a plate body; 11. a central point; 12. arc-shaped grooving; 2. a rod body; 3. a fixing member; 4. a flaw detector tube head; 5. and (5) detecting the workpiece.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, the device for measuring the inclination angle and the transillumination focal length of the radiographic tube head of the present invention comprises a plate body 1, a rod body 2 and a fixing member 3;
the bottom of the plate body 1 is a straight edge, a central point 11 is arranged on the plate body 1 close to the bottom, and an arc-shaped slot 12 taking the central point 11 as a circle center is formed in the plate body 1;
scale marks are arranged around the arc-shaped open slot 12;
one end of the rod body 2 is rotatably connected to the central point 11;
the fixing piece 3 is connected on the rod body 2 and is detachably and fixedly connected with the arc-shaped open slot 12.
From the above description, the beneficial effects of the present invention are: the bottom is a straight edge matched with the annular groove, so that the plate body 1 can form a structure similar to a 90-degree angle ruler, and an accurate angle can be formed by matching the rod body 2 with the fixing piece 3; the welding line detection through the structure is simple to operate, the negative plate meets the detection standard requirement, the problem that the inclination angle of double-wall single-image transillumination of the welding line is inaccurate is solved, the ray detection quality is ensured, and the qualification rate of the negative plate can be greatly improved; simple structure, convenient to use, great promotion efficiency is applicable to the ray transillumination mode of different angles such as both arms list shadow transillumination and path pipe welding seam fillet weld T type welding seam.
From the above description, the working process of the present invention is: when the welding seams of workpieces 5 to be detected, such as box girders, small-diameter pipes, angle butt joints, T-shaped interfaces and the like, are detected, a fixing piece 3 (a dovetail nut) is loosened according to the tube head inclination angle and transillumination minimum focal length required by technical standards, a rod body 2 (a telescopic rod) is rotated to enable the rod body 2 (the telescopic rod) to reach the scale position which is correspondingly displayed by the inclination angle specified by the technical standards and the scale mark of an arc-shaped groove 12, then the rod body 2 (the telescopic rod) is adjusted to be within the transillumination focal length range specified by the standards, the fixing piece 3 (the dovetail nut) is screwed down to enable the rod body 2 to be fixed on a plate body 1, the ray tube head inclination angle and the transillumination focal length specified by the standards are adjusted, the right-angle edge of the device is placed on the welding seam of the workpieces 5 to be transilluminated, the center of a tube head 4 of a flaw detector is moved to be aligned with the rod body 2 (the telescopic rod), thus, the inclination angle and the transillumination focal distance of the radiographic head can be quickly and accurately adjusted as shown in figure 1.
Further, the rod body 2 is a telescopic rod.
Furthermore, the rod body 2 is provided with scale marks.
As can be seen from the above description, the reading can be facilitated by the arrangement of the graduation marks.
Furthermore, one end of the rod body 2 is rotatably connected to the central point 11 through a connecting bolt.
Further, the fixing part 3 comprises a fixing bolt and a dovetail nut which are matched with each other, the rod body 2 is provided with a sliding groove, and the fixing bolt penetrates through the sliding groove to be matched with the arc-shaped groove 12 and the dovetail nut.
According to the dovetail nut, manual adjustment can be conveniently and fixedly achieved through the dovetail nut, and the working efficiency is improved.
Furthermore, one side of the plate body 1 is a straight edge perpendicular to the bottom, and the center point 11 is close to a right angle formed by the side and the bottom.
Example one
A device for measuring the inclination angle and the transillumination focal length of a radiographic tube head comprises a plate body, a rod body and a fixing piece;
the bottom of the plate body is a straight edge, a central point is arranged on the plate body close to the bottom, and an arc-shaped slot with the central point as a circle center is formed in the plate body;
scale marks are arranged around the arc-shaped open groove;
one end of the rod body is rotatably connected to the central point;
the fixing piece is connected on the rod body and forms detachable fixed connection with the arc-shaped open groove.
The rod body is a telescopic rod. And the rod body is provided with scale marks.
One end of the rod body is rotatably connected to the center point through a connecting bolt.
The mounting is including the fixing bolt and the forked tail nut of mutually supporting, the spout has been seted up to the body of rod, fixing bolt passes the spout and mutually supports with the forked tail nut with the arc fluting.
One side edge of the plate body is a straight edge vertical to the bottom, and the center point is close to a right angle formed by the side edge and the bottom.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (6)
1. A device for measuring the inclination angle and the transillumination focal length of a radiographic tube head is characterized by comprising a plate body, a rod body and a fixing piece;
the bottom of the plate body is a straight edge, a central point is arranged on the plate body close to the bottom, and an arc-shaped slot with the central point as a circle center is formed in the plate body;
scale marks are arranged around the arc-shaped open groove;
one end of the rod body is rotatably connected to the central point;
the fixing piece is connected on the rod body and forms detachable fixed connection with the arc-shaped open groove.
2. The device for measuring the inclination angle and the transillumination focal length of a radiographic head of claim 1, wherein the rod body is a telescopic rod.
3. The device for measuring the inclination angle and the transillumination focal length of the radiographic head of claim 2, wherein the rod body is provided with scale marks.
4. The device for measuring the inclination angle and the transillumination focal length of the radiographic head of claim 1, wherein one end of the rod body is rotatably connected to the center point through a connecting bolt.
5. The device for measuring the inclination angle and the transillumination focal length of the radiographic tube head according to claim 1, wherein the fixing member comprises a fixing bolt and a dovetail nut which are matched with each other, the rod body is provided with a sliding groove, and the fixing bolt penetrates through the sliding groove to be matched with the arc-shaped groove and the dovetail nut.
6. The device for measuring the inclination angle and the transillumination focal length of the radiographic head of claim 1, wherein one side edge of the plate body is a straight edge perpendicular to the bottom, and the center point is close to a right angle formed by the side edge and the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121065637.0U CN215727799U (en) | 2021-05-18 | 2021-05-18 | Device for measuring inclination angle and transillumination focal length of radiographic tube head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121065637.0U CN215727799U (en) | 2021-05-18 | 2021-05-18 | Device for measuring inclination angle and transillumination focal length of radiographic tube head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215727799U true CN215727799U (en) | 2022-02-01 |
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ID=80031792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121065637.0U Active CN215727799U (en) | 2021-05-18 | 2021-05-18 | Device for measuring inclination angle and transillumination focal length of radiographic tube head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215727799U (en) |
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2021
- 2021-05-18 CN CN202121065637.0U patent/CN215727799U/en active Active
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