Inner hole automatic crawling scanning nondestructive flaw detection device

Abstract

The utility model discloses an inner hole automatic crawling scanning nondestructive flaw detection device, which relates to the field of pipeline inner hole detection, and comprises a detection ring for detecting a pipeline inner hole, the detection ring is annularly arranged, the inner side of the detection ring is provided with a feeding inner cavity for an oil film to pass through, one side of the detection ring is provided with a material scraping ring, and the other side of the detection ring is provided with a feeding inner cavity for the oil film to pass through. The inner side of the feeding inner cavity is fixedly provided with a turning ring, the end of the turning ring is fixedly connected with the end of a scraping ring, and the inner side, away from the turning ring, of the feeding inner cavity is fixedly provided with a feeding isolation ring. The detection positions of the first ultrasonic detection ring and the second ultrasonic detection ring are subjected to ultrasonic detection, so that the situation that too many and too thick oil films affect the detection result is prevented, and the detection positions are prevented from entering the oil films during ultrasonic detection through the feeding isolation ring.

Description

Technical Field

[0001] This utility model relates to the field of pipeline internal hole inspection, and in particular to an automatic crawling scanning non-destructive testing device for internal holes. Background Technology

[0002] Pipelines, as crucial equipment for transporting flowing media, are widely used in industries such as petroleum, chemical, and electrical engineering, resulting in a large number of pipelines in service. However, potential manufacturing defects and the effects of erosion by the flowing media, environmental corrosion, and external forces during service can easily lead to complex and diverse failures, causing serious economic losses and even severe safety accidents. If the problem can be identified early and appropriate measures taken, accidents can be avoided. Pipeline failure modes include localized corrosion, overall corrosion, large-scale damage corrosion, sulfide stress corrosion, stress corrosion cracking, and mechanical damage. Therefore, it is necessary to propose an automatic crawling scanning non-destructive testing device for internal boreholes to address these issues. Utility Model Content

[0003] The purpose of this invention is to provide an automatic crawling scanning non-destructive testing device for internal holes to solve the problem of oil film affecting ultrasonic judgment.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic crawling scanning non-destructive testing device for inner bores, comprising a detection ring for detecting the inner bore of a pipe, the detection ring being arranged in a ring shape, a feeding cavity for oil film passage being opened on the inner side of the detection ring, a scraping ring being provided on one side of the detection ring, a turning ring being fixedly provided on the inner side of the feeding cavity, and the end of the turning ring being fixedly connected to the end of the scraping ring.

[0005] A feeding isolation ring is fixedly provided on the inner side of the feeding cavity away from the turning ring, and the outer sides of both the feeding isolation ring and the scraping ring are in contact with the inner wall of the pipe bore.

[0006] The detection ring is fixedly provided with a first ultrasonic detection ring at the end corresponding to the scraper ring, and a second ultrasonic detection ring is fixedly provided on the outside of the detection ring.

[0007] Preferably, a plurality of telescopic shells are fixedly provided on the outer side of the detection ring, a telescopic groove is provided at one end of the telescopic shell, a telescopic leg is movably provided on the inner side of the telescopic groove, a power block is fixedly provided at the end of the telescopic leg, and a rubber wheel is rotatably provided on the power block.

[0008] Preferably, both the feeding isolation ring and the scraping ring are arranged in a trumpet shape.

[0009] Preferably, a drive motor is fixedly mounted on one end of the power block, and the output shaft of the drive motor is fixedly connected to the end of the rubber wheel.

[0010] Preferably, the rubber wheel is provided with multiple anti-slip strips on its outer side.

[0011] Preferably, the end of the telescopic leg is fixedly connected to the inner wall of the telescopic shell by a spring, the cross-section of the telescopic shell is concave, and the cross-section of the telescopic leg is convex.

[0012] Preferably, a controller is fixedly mounted on the outer side of the detection ring.

[0013] Preferably, a controller is fixedly provided on the outside of the detection ring, and the controller is communicatively connected to the first ultrasonic detection ring, the second ultrasonic detection ring and the drive motor.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. By setting up a scraping ring, the inner wall of the pipe can be automatically cleaned when the detection ring detects the inner wall of the pipe. Ultrasonic detection is performed on the detection positions of the first ultrasonic detection ring and the second ultrasonic detection ring to prevent excessive or thick oil film from affecting the detection results. The feeding isolation ring prevents the detection position from entering the oil film during ultrasonic detection.

[0016] 2. By setting up the scraper ring and the inner feeding cavity, the oil film accumulated in front of the detection ring can be effectively transferred to the rear of the detection ring when the detection ring moves forward, preventing the oil film from accumulating too much and generating greater resistance, which facilitates the movement of the detection ring. Furthermore, when the oil film needs to be pushed out, it is only necessary to block the inner feeding cavity, which is highly practical. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the automatic crawling scanning non-destructive testing device for internal holes of this utility model.

[0018] Figure 2 This is a schematic diagram showing the disassembled structure of the scraping ring and the feeding isolation ring of this utility model.

[0019] Figure 3 This is a cross-sectional structural diagram of the scraping ring and the feeding isolation ring of this utility model.

[0020] In the diagram: 1. Detector ring; 2. Controller; 3. First ultrasonic detection ring; 4. Second ultrasonic detection ring; 5. Feeding cavity; 6. Scraper ring; 7. Turning ring; 8. Feeding isolation ring; 9. Telescopic shell; 10. Telescopic leg; 11. Power block; 12. Drive motor. Detailed Implementation

[0021] This utility model provides, for example Figure 1 - Figure 3The illustrated automatic crawling scanning non-destructive testing device for internal bores includes a detection ring 1 for detecting the internal bore of a pipe. The detection ring 1 is annular, and an inner feeding cavity 5 for oil film passage is opened on the inner side of the detection ring 1. The conventional detection robot is set in an annular shape to facilitate the passage of oil film. Oil film will be generated inside the pipe. The presence of oil film will change the propagation path and reflection characteristics of ultrasonic waves, thereby affecting the accuracy and precision of the detection. This effect is more significant when the oil film thickness is uneven or there are multiple media. Therefore, it is necessary to remove the oil film for detection. A first ultrasonic detection ring 3 is fixedly installed at the end of the detection ring 1 corresponding to the scraping ring 6. A second ultrasonic detection ring 4 is fixedly installed on the outer side of the detection ring 1. The first ultrasonic detection ring 3 and the second ultrasonic detection ring 4 are existing technologies and are mainly used to emit ultrasonic waves to collect on-site information. They will not be described in detail here. A controller 2 is fixedly installed on the outer side of the detection ring 1. The controller 2 is mainly used to control the detection ring 1, the first ultrasonic detection ring 3, and the second ultrasonic detection ring 4. The controller 2 sends the collected signals to an external host computer.

[0022] A controller 2 is fixedly installed on the outside of the detection ring 1. The controller 2 is communicatively connected to the first ultrasonic detection ring 3, the second ultrasonic detection ring 4, and the drive motor 12.

[0023] A scraper ring 6 is provided on one side of the detection ring 1, and a turning ring 7 is fixedly provided on the inner side of the feeding cavity 5. The end of the turning ring 7 is fixedly connected to the end of the scraper ring 6. A feeding isolation ring 8 is fixedly provided on the inner side of the feeding cavity 5 away from the turning ring 7. Both the feeding isolation ring 8 and the scraper ring 6 are arranged in a trumpet shape to facilitate the passage of oil film. The outer sides of both the feeding isolation ring 8 and the scraper ring 6 are in contact with the inner wall of the pipe bore.

[0024] By setting the scraper ring 6, the inner wall of the pipe can be automatically cleaned when the detection ring 1 detects the inner wall of the pipe. Ultrasonic detection is performed on the detection positions of the first ultrasonic detection ring 3 and the second ultrasonic detection ring 4 to prevent the oil film from being too thick or affecting the detection results. The feeding isolation ring 8 prevents the detection position from entering the oil film during ultrasonic detection.

[0025] By using the scraper ring 6 and the feeding cavity 5, the oil film accumulated in front of the detector ring 1 can be effectively transferred to the rear of the detector ring 1 when the detector ring 1 moves forward, preventing the oil film from accumulating too much and generating greater resistance, which facilitates the movement of the detector ring 1. Furthermore, when the oil film needs to be pushed out, it is only necessary to block the feeding cavity 5, which is highly practical.

[0026] Multiple telescopic shells 9 are fixedly provided on the outer side of the detection ring 1. One end of the telescopic shell 9 is provided with a telescopic groove. A telescopic leg 10 is movably provided inside the telescopic groove. A power block 11 is fixedly provided at the end of the telescopic leg 10. A rubber wheel is rotatably provided on the power block 11. Multiple anti-slip strips are fixedly provided on the outer side of the rubber wheel. The rubber wheel and the outer anti-slip strips are existing technologies to prevent the rubber wheel from slipping. They will not be described in detail here.

[0027] One end of the power block 11 is fixedly equipped with a drive motor 12, which is a servo motor and is existing technology, so it will not be described in detail here. The output shaft of the drive motor 12 is fixedly connected to the end of the rubber wheel. When the drive motor 12 is turned on, the rubber wheel is driven to rotate, so that the detection ring 1 moves forward to perform pipeline detection. The end of the telescopic leg 10 is fixedly connected to the inner wall of the telescopic shell 9 by a spring. The cross-section of the telescopic shell 9 is concave, and the cross-section of the telescopic leg 10 is convex. The design of the telescopic shell 10 and the telescopic leg 9 ensures the pressure of the rubber wheel contacting the inner wall of the pipeline, which facilitates the movement of the detection ring 1. The drive motor 12 is also controlled by the controller 2.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the application. Various changes and modifications can be made without departing from the spirit and scope of this application, and all such changes and modifications fall within the scope of the claims. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. An automatic crawling scanning non-destructive testing device for internal bores, comprising a probe ring (1) for detecting the internal bore of a pipe, characterized in that: The detection ring (1) is arranged in a ring shape. The inner side of the detection ring (1) is provided with a feeding cavity (5) for the oil film to pass through. A scraping ring (6) is provided on one side of the detection ring (1). A turning ring (7) is fixedly provided on the inner side of the feeding cavity (5). The end of the turning ring (7) is fixedly connected to the end of the scraping ring (6). The inner side of the feeding cavity (5) away from the turning ring (7) is fixedly provided with a feeding isolation ring (8), and the outer sides of the feeding isolation ring (8) and the scraping ring (6) are in contact with the inner wall of the pipe hole. The detection ring (1) is fixedly provided with a first ultrasonic detection ring (3) at the end corresponding to the scraper ring (6), and a second ultrasonic detection ring (4) is fixedly provided on the outside of the detection ring (1). A telescopic leg (10) is fixedly provided on the outside of the detection ring (1), and a power block (11) is fixedly provided at the end of the telescopic leg (10), and a drive motor (12) is fixedly provided at one end of the power block (11).

2. The automatic crawling scanning non-destructive testing device for internal holes according to claim 1, characterized in that: Multiple telescopic shells (9) are fixedly provided on the outer side of the detection ring (1). One end of the telescopic shell (9) is provided with a telescopic groove. A telescopic leg (10) is movably provided on the inner side of the telescopic groove. A power block (11) is fixedly provided at the end of the telescopic leg (10). A rubber wheel is rotatably provided on the power block (11).

3. The automatic crawling scanning non-destructive testing device for internal holes according to claim 1, characterized in that: Both the feeding isolation ring (8) and the scraping ring (6) are arranged in a trumpet shape.

4. The automatic crawling scanning non-destructive testing device for internal holes according to claim 2, characterized in that: The output shaft of the drive motor (12) is fixedly connected to the end of the rubber wheel.

5. The automatic crawling scanning non-destructive testing device for internal holes according to claim 2, characterized in that: Multiple anti-slip strips are fixedly installed on the outer side of the rubber wheel.

6. The automatic crawling scanning non-destructive testing device for internal holes according to claim 2, characterized in that: The end of the telescopic leg (10) is fixedly connected to the inner wall of the telescopic shell (9) by a spring. The cross-section of the telescopic shell (9) is concave, and the cross-section of the telescopic leg (10) is convex.

7. The automatic crawling scanning non-destructive testing device for internal holes according to claim 1, characterized in that: A controller (2) is fixedly provided on the outside of the detection ring (1). The controller (2) is communicatively connected to the first ultrasonic detection ring (3), the second ultrasonic detection ring (4), and the drive motor (12).

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