X-ray detection device for large-diameter pipeline
By installing a linear array detector and a movable X-ray source structure inside a large-diameter pipe, single-wall imaging is achieved, solving the problems of overlapping defect images and large measurement errors in traditional detection and improving detection accuracy.
Patent Information
- Application Number
- CN202422893016.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-11-26
AI Technical Summary
In traditional X-ray inspection of large-diameter pipes, X-rays penetrate the double pipe walls in a straight line, resulting in overlapping defect images and large measurement errors, making accurate detection difficult.
A linear array detector is placed inside the pipe, combined with a movable X-ray source and detector structure, to achieve single-wall imaging, and omnidirectional scanning is performed by rotating the pipe.
This avoids overlapping defect images, improves the accuracy of defect size measurement, and reduces measurement errors.
Smart Images
Figure CN223565604U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to X -ray pipeline nondestructive testing field relates to a big pipe diameter pipeline X -ray detection device for big pipe diameter pipeline through X -ray defect detection. BACKGROUND
[0002] Big pipe diameter pipeline is usually used for conveying liquid, gas, petroleum, chemicals and the like, and its quality and safety are crucial to industrial production and environmental safety. The big pipe diameter flaw detection device can help detect and evaluate defects, corrosion, cracks and other problems inside the pipeline to ensure its integrity and reliability.
[0003] At present, for the traditional X -ray detection scheme of big pipe diameter pipeline, the pipeline is arranged between the X -ray machine and the flat panel detector, the X -ray machine emits X -ray as a ray source, the X -ray penetrates the double -walled pipe, and is projected on the flat panel detector, the flat panel detector converts the X -ray into an electrical signal, and then forms an image.
[0004] The traditional X -ray detection method of big pipe diameter has the following shortcomings:
[0005] (1 Since the X -ray is emitted along a straight line to penetrate the double -walled pipe, the defect A and the defect B may coincide, which may cause the projection of the pipe wall to overlap, the defect image to coincide, and the defect size to be inaccurate.
[0006] (2 Since the same ray source detects the double -walled pipe of big pipe diameter at the same time, the pipe diameter is large, which causes the imaging magnification ratio of different positions of the pipe to be different, and the size error to be large. INVENTION CONTENTS
[0007] In view of the problems in the prior art, the purpose of the utility model is to provide a big pipe diameter pipeline X -ray detection device.
[0008] The utility model discloses a linear array detector is arranged in the pipeline, and single -walled imaging is carried out. The linear array detector is used as an X -ray receiver in pipeline detection imaging. The main structure of the utility model: the parallel structure that the ray source and the detector can move up and down, and the structure that the detected pipeline moves on two axes and rotates on a single axis.
[0009] The technical scheme of the present application is:
[0010] A big pipe diameter pipeline X -ray detection device, characterized in that it comprises a ray source support structure 1, a ray source 2, a detection platform 3, a translation table 4, a rotary table 5, a detector support structure 6 and a detector 8.
[0011] The ray source support structure 1 and the detector support structure 6 are respectively arranged at two ends of the detection platform 3.
[0012] The translation platform 4 is arranged on the detection platform 3 and can move in a horizontal direction.
[0013] The rotary table 5 is arranged on the translation platform 4 and is used for placing and rotating the pipeline 7 to be detected.
[0014] The ray source support structure 1 is used for supporting the ray source 2 and adjusting the position of the ray source 2 so that the center of the ray source 2 corresponds to the center of the detector 8.
[0015] The ray source 2 is used for emitting X rays to scan the pipeline 7 to be detected.
[0016] The translation platform 4 is used for moving the rotary table 5 and the pipeline 7 to be detected on the rotary table 5 to a required position.
[0017] The detector support structure 6 is used for supporting the detector 8 and adjusting the position of the detector 8; when the pipeline 7 to be detected is scanned and detected, the detector 8 is located inside the pipeline 7 to be detected.
[0018] The detector 8 is used for receiving the X rays penetrating through the pipeline 7 to be detected and converting the X rays into images to obtain a detection image of the pipeline 7 to be detected.
[0019] Further, the detection platform 3 is provided with a guide rail, and the bottom of the translation platform 4 is provided with a groove matched with the guide rail.
[0020] Further, the top end of the detector 8 is connected with the detector support structure 6.
[0021] Further, the sidewall of the ray source support structure 1 is provided with a guide rail used for connecting the ray source 2 and used for adjusting the position of the ray source 2.
[0022] Further, the sidewall of the detector support structure 6 is provided with a guide rail used for connecting the detector 8 and used for adjusting the position of the detector 8.
[0023] Further, the detector 8 is a linear array detector.
[0024] Further, the translation platform 4 is provided with a guide rail used for connecting the rotary table 5 and used for adjusting the position of the rotary table 5 in a horizontal direction.
[0025] The advantages of the utility model are as follows:
[0026] (1) X rays penetrate through a single wall and are directly projected into a linear array detector, so that the defect imaging overlap condition in double-wall detection is avoided, and the defect size is more accurate.
[0027] (2) Avoid the case of large amplification ratio difference caused by large pipe diameter, reduce the size error of measurement. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 is the schematic diagram of the present scheme.
[0029] Figure 2 is the imaging effect schematic diagram of the present scheme.
[0030] Figure 3 is the specific structural diagram of the present scheme.
[0031] Figure 4 is the detection flowchart of the present scheme.
[0032] The drawings show that: 1 is a ray source support structure, 2 is a ray source, 3 is a detection platform, 4 is a translation table, 5 is a rotary table, 6 is a detector support structure, 7 is a pipe to be detected, 8 is a linear array detector. DETAILED DESCRIPTION
[0033] The present utility model will be further described in detail below in combination with the drawings, and the examples are only used to explain the present utility model, and are not used to limit the scope of the present utility model.
[0034] The present scheme adopts a linear array detector as a receiving ray end, places the linear array detector inside the pipe, the ray source emits X rays, the X rays penetrate the single-wall pipeline, the linear array detector receives and converts into electrical signals for imaging, and the pipeline is rotated to complete scanning detection of the entire pipeline, and the scheme principle schematic diagram is as shown in Figure 1 The imaging effect schematic diagram is as shown in Figure 2 .
[0035] The specific structure of the large-diameter pipeline X-ray detection device of the present scheme is as shown in Figure 3 , which comprises a ray source support structure 1, which mainly provides support for the ray source, so that the ray source can move up and down, and ensures that the center of the ray source is consistent with the center line of the linear array detector; a ray source 2 emits X rays; a detection platform 3 provides a platform for the entire detection mechanism, which is generally a marble platform, which can ensure the detection accuracy; a translation table 4 drives the rotary table 5 and the pipe to be detected 7 to move to a proper position; a rotary table 5 can drive the pipe to be detected to rotate 360°. The detector support structure 6 provides support for the linear array detector, so that the detector can move up and down, and ensures that the center line of the detector corresponds to the center of the ray source; a linear array detector 8 receives X rays and converts them into images.
[0036] The detection process is as shown in Figure 4 .
[0037] Although the specific embodiments of the utility model are disclosed for the purpose of illustration, the purpose is to help understand the content of the utility model and to implement it, the person skilled in the art can understand that: without departing from the spirit and scope of the utility model and the appended claims, various substitutions, changes and modifications are possible. Therefore, the utility model should not be limited to the disclosed content of the best embodiment, and the scope of the utility model claimed is the scope defined by the claims.
Claims
1. A large pipe diameter pipeline X-ray inspection apparatus, characterized by, The ray source support structure (1), the detector support structure (6) are respectively arranged at two ends of the detection platform (3); The translation table (4) is arranged on the detection platform (3) and can move in the horizontal direction; The rotary table (5) is arranged on the translation table (4) and is used for placing and rotating the pipeline (7) to be detected; The ray source support structure (1) is used for supporting the ray source (2) and adjusting the position of the ray source (2) so that the center of the ray source (2) corresponds to the center of the detector (8); The ray source (2) is used for emitting X-rays to scan the pipeline (7) to be detected; The translation table (4) is used for moving the rotary table (5) and the pipeline (7) to be detected to the required position; The detector support structure (6) is used for supporting the detector (8) and adjusting the position of the detector (8); when the pipeline (7) to be detected is scanned and detected, the detector (8) is located in the pipeline (7) to be detected; The detector (8) is used for receiving X-rays transmitted through the pipeline (7) to be detected and converting the X-rays into images to obtain the detection image of the pipeline (7) to be detected. The detection platform (3) is provided with a guide rail, and the bottom of the translation table (4) is provided with a groove matched with the guide rail.
2. The large-bore pipe x-ray inspection apparatus of claim 1, wherein, The top end of the detector (8) is connected with the detector support structure (6).
3. The large-bore pipe x-ray inspection apparatus of claim 2, wherein, The side wall of the ray source support structure (1) is provided with a guide rail for connecting the ray source (2) and adjusting the position of the ray source (2).
4. The large-bore pipe X-ray inspection apparatus according to claim 1 or 2 or 3, characterized by, The side wall of the detector support structure (6) is provided with a guide rail for connecting the detector (8) and adjusting the position of the detector (8).
5. The large-bore pipe x-ray inspection apparatus according to claim 1 or 2 or 3, characterized by, The detector (8) is a linear array detector.
6. The large-bore pipe x-ray inspection apparatus according to claim 1 or 2 or 3, characterized by, The translation table (4) is provided with a guide rail for connecting the rotary table (5) and adjusting the position of the rotary table (5) in the horizontal direction.
7. The large-bore pipe x-ray inspection apparatus of claim 1, wherein, The translation table (4) is provided with a guide rail for connecting the rotary table (5) and adjusting the position of the rotary table (5) in the horizontal direction.