A tool for in-dwelling wall permeation detection

Abstract

This utility model relates to the field of pipeline inspection technology and discloses a fixture for pipeline inner wall penetration testing. It includes a support base and a cylindrical support frame. Multiple sets of high-definition cameras and LED light strips are evenly spaced along the circumference of the outer surface of the cylindrical support frame. The high-definition cameras and LED light strips are arranged in a circular array. A drive motor is fixedly installed on one side inside the support base, and a drive screw is fixedly connected to the transmission end of the drive motor. This fixture for pipeline inner wall penetration testing, through the circular array formed by the intersecting distribution of high-definition cameras and LED light strips, combined with the autofocus function of the industrial-grade camera, can achieve 360° image acquisition of the pipeline inner wall without blind spots. The high color rendering index LED light strips provide uniform illumination, effectively eliminating shadow interference and making defect features clearer in the image, significantly shortening manual interpretation time and efficiently completing the inspection work.

Description

Technical Field

[0001] This utility model relates to the field of pipeline inspection technology, specifically a tooling for detecting the penetration of the inner wall of a pipeline. Background Technology

[0002] In industrial production and municipal engineering, the quality of pipelines directly affects the safe operation and service life of the system. Defects such as cracks and pores on the inner wall of pipelines are one of the important causes of pipeline leaks, ruptures and other accidents. Penetrant testing is a commonly used non-destructive testing method that can effectively detect surface opening defects on the inner wall of pipelines.

[0003] The existing patent document CN213516926U discloses a tooling for pipe inner wall penetration detection. This utility model tooling has a simple structure, low cost, and convenient operation. It can uniformly spray the agents for pipe inner wall penetration, cleaning, and imaging, and the time required to complete the spraying is short, which improves efficiency. The amount of agent required for spraying is reduced, the cost is significantly reduced, and the agent can be recycled for reuse.

[0004] However, existing tools used for pipeline internal wall penetration testing generally adopt manual inspection methods, and the problem of detection accuracy is becoming increasingly prominent. Due to the limitations of human eye physiological resolution and the limited observation angle inside narrow pipelines, inspectors find it difficult to capture tiny defects in the pipeline internal wall, making it easy to miss hidden dangers such as minute cracks and holes in critical parts, which is difficult to meet the high-precision inspection requirements of modern industry for pipeline safety. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a tooling for pipe inner wall penetration testing, in order to solve the problem mentioned in the background art that the existing tooling for pipe inner wall penetration testing is poor in accuracy due to manual testing.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a tooling for pipe inner wall penetration detection, including a support base and a cylindrical support frame, wherein multiple sets of high-definition cameras and LED light strips are evenly spaced along the circumferential direction on the outer surface of the cylindrical support frame, and the high-definition cameras and LED light strips are intersected to form a ring array.

[0009] As a further improvement to the above solution, a drive motor is fixedly installed on one side inside the support base, and a drive screw is fixedly connected to the transmission end of the drive motor. The end of the drive screw away from the drive motor is connected to the support base through a bearing.

[0010] As a further improvement to the above solution, the outer surface of the drive screw is connected to a moving block by a thread, and the moving block is slidably engaged with the support base.

[0011] As a further improvement to the above solution, a connecting rod is vertically fixed to the side of the movable block near the cylindrical support frame. The connecting rod is made of high-strength aluminum alloy, and the other end of the connecting rod is connected to the cylindrical support frame.

[0012] As a further improvement to the above solution, four electric push rods are evenly distributed along the circumferential direction in the middle of the inner wall of the cylindrical support frame. The transmission end of the outer end of the electric push rod extends to the outside through the through hole opened in the wall of the cylindrical support frame and is fixedly connected to the telescopic rod.

[0013] As a further improvement to the above solution, a mounting block is fixedly connected to the end of the telescopic rod away from the electric push rod. A support pulley is connected inside the mounting block through a bearing. The support pulley is a polyurethane-coated wheel.

[0014] As a further improvement to the above solution, an annular spray pipe is fixedly installed on the outer surface of the cylindrical support frame away from the connecting rod by a clamp structure. Several nozzles are evenly distributed along the circumference of the annular spray pipe, and a flexible hose is connected to one side of the annular spray pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This tooling for pipe wall penetration testing uses a ring array formed by a high-definition camera and LED light strips, combined with the autofocus function of an industrial-grade camera, to achieve 360° image acquisition of the pipe wall without blind spots. The high color rendering index LED light strips provide uniform illumination, effectively eliminating shadow interference, making the defect features clearer in the image, greatly shortening the manual interpretation time, and efficiently completing the inspection work.

[0017] 2. This fixture for pipe internal wall penetration testing features four evenly distributed electric push rods that drive the support pulleys to extend and retract radially via telescopic rods. It can automatically adjust to adapt to the testing needs of pipes of different specifications. The support pulleys are made of polyurethane-coated material, which, thanks to its excellent frictional properties, not only provides stable and reliable support for the fixture, effectively resisting external interference such as fluid impact and vibration inside the pipe and ensuring the fixture's position remains fixed during testing, but also allows for flexible contact with the pipe's inner wall, avoiding scratches and abrasions caused by traditional rigid supports. This ensures testing efficiency while maximizing the protection of the pipe's structural integrity. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the cylindrical support frame of this utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the supporting pulley of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the support base of this utility model.

[0022] In the diagram: 1. Support base; 2. Cylindrical support frame; 3. High-definition camera; 4. LED light strip; 5. Drive motor; 6. Drive screw; 7. Moving block; 8. Connecting rod; 9. Electric push rod; 10. Telescopic rod; 11. Mounting block; 12. Support pulley; 13. Annular spray pipe; 14. Sprayer head; 15. Hose. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a tooling for pipe inner wall penetration detection, including a support base 1 and a cylindrical support frame 2. Multiple sets of high-definition cameras 3 and LED light strips 4 are evenly spaced along the circumference on the outer surface of the cylindrical support frame 2. The high-definition cameras 3 and LED light strips 4 are intersected to form a ring array.

[0025] The LED light strip 4 (using a model with a high color rendering index (CRI≥90)) provides ample and uniform illumination, eliminating shadows in the inspection area. The high-definition camera 3 is an industrial-grade fixed-focus / autofocus model that acquires images of the inner wall of the pipe in real time and transmits the data to an external terminal (not shown in the figure). Since the high-definition camera 3 and the LED light strip 4 are arranged in a ring array, they can achieve 360° imaging of the inner wall of the pipe without blind spots, ensuring that even minor defects can be clearly presented in the acquired images. After the inspection is completed, the electric push rod 9 is controlled to retract, causing the support pulley 12 to disengage from the inner wall of the pipe, so that the tooling can be removed from the pipe, completing one inspection process.

[0026] A drive motor 5 is fixedly installed on one side inside the support base 1. A drive screw 6 is fixedly connected to the transmission end of the drive motor 5. The end of the drive screw 6 away from the drive motor 5 is connected to the support base 1 through a bearing. A moving block 7 is threadedly connected to the outer surface of the drive screw 6. The moving block 7 slides with the support base 1. A connecting rod 8 is vertically fixedly connected to the side of the moving block 7 near the cylindrical support frame 2. The connecting rod 8 is made of high-strength aluminum alloy. The other end of the connecting rod 8 is connected to the cylindrical support frame 2. Four electric push rods 9 are evenly distributed along the circumference in the middle of the inner wall of the cylindrical support frame 2. The transmission end of the electric push rod 9 extends outward through the through hole opened in the wall of the cylindrical support frame 2 and is fixedly connected to the telescopic rod 10. The end of the telescopic rod 10 away from the electric push rod 9 is fixedly connected to the mounting block 11. The mounting block 11 is connected to the support pulley 12 through the bearing. The support pulley 12 is a polyurethane coated wheel. The end of the outer surface of the cylindrical support frame 2 away from the connecting rod 8 is fixedly installed with the annular spray pipe 13 through the clamp structure. Several nozzles 14 are evenly distributed along the circumference on the annular spray pipe 13. A hose 15 is connected to one side of the annular spray pipe 13.

[0027] In use, first place the fixture at the pipe end. Then, activate the four electric push rods 9 on the inner wall of the cylindrical support frame 2 via the control equipment. The electric push rods 9 drive the telescopic rod 10 to extend radially, causing the support pulley 12 (polyurethane-coated wheel) to tightly fit against the inner wall of the pipe. At this time, the support pulley 12 stably supports the fixture using high friction, and automatically adjusts the support radius according to the inner diameter of the pipe to ensure the fixture remains centered and stable within the pipe. Subsequently, connect the drive pump of the external test reagent storage tank through the hose 15, allowing the test reagent to flow into the annular spray pipe 13 via the hose 15, and then be evenly sprayed by the nozzle 14. On the inner wall of the pipe, the nozzle 14 adopts a fan-shaped atomization design, which can ensure that the reagent fully and evenly covers the inner wall of the pipe, completing the preliminary preparation for penetration testing. After the reagent has fully penetrated the defects in the inner wall of the pipe, the drive motor 5 inside the support base 1 is started. The drive motor 5 drives the drive screw 6 to rotate. Through the threaded transmission, the moving block 7 slides axially in the support base 1, and then pulls the cylindrical support frame 2 to move smoothly in the pipe through the connecting rod 8. After the test is completed, the electric push rod 9 is controlled to retract, so that the support pulley 12 is disengaged from the inner wall of the pipe, and the tooling can be removed from the pipe, completing one test process.

[0028] Working Principle: In use, the fixture is first placed at the pipe end. The control device activates the four electric push rods 9 on the inner wall of the cylindrical support frame 2. The electric push rods 9 drive the telescopic rod 10 to extend radially, causing the support pulleys 12 (polyurethane-coated wheels) to tightly adhere to the inner wall of the pipe. At this time, the support pulleys 12 stably support the fixture using high friction, and simultaneously adjust the support radius automatically according to the pipe's inner diameter, ensuring the fixture remains centered and stable within the pipe. Subsequently, the drive pump of the external test reagent storage tank is connected via the hose 15, allowing the test reagent to flow through the hose 15 into the annular spray pipe 13, and then be evenly sprayed onto the inner wall of the pipe by the nozzle 14. The nozzle 14 adopts a fan-shaped atomization design, ensuring that the reagent fully and evenly covers the inner wall of the pipe, completing the preliminary preparation for penetration testing. After the reagent has fully penetrated the defects in the inner wall of the pipe, the drive motor 5 inside the support base 1 is activated. The drive motor 5 drives the drive screw 6 to rotate. Through threaded transmission, the moving block 7 slides axially within the support base 1, and then pulls the cylindrical support frame 2 to move smoothly inside the pipe through the connecting rod 8. During this process, the LED light strip 4 (using a model with a high color rendering index (CRI≥90)) provides sufficient and uniform illumination to eliminate shadows in the inspection area. The high-definition camera 3 adopts an industrial-grade fixed-focus / auto-focus model to collect images of the inner wall of the pipe in real time and transmit the data to an external terminal (not shown in the figure). Since the high-definition camera 3 and the LED light strip 4 are arranged in a ring array, they can achieve 360° no-dead-angle shooting of the inner wall of the pipe, ensuring that even minor defects can be clearly presented in the collected images. After the inspection is completed, the electric push rod 9 is controlled to retract, so that the support pulley 12 is disengaged from the inner wall of the pipe, and the tooling can be removed from the pipe, completing one inspection process.

[0029] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A tooling for pipe inner wall penetration testing, comprising a support base (1) and a cylindrical support frame (2), characterized in that: The outer surface of the cylindrical support frame (2) is uniformly spaced with multiple sets of high-definition cameras (3) and LED light strips (4) along the circumferential direction. The high-definition cameras (3) and LED light strips (4) are intersected to form a ring array.

2. The tooling for pipe inner wall penetration testing according to claim 1, characterized in that: A drive motor (5) is fixedly installed on one side inside the support base (1). A drive screw (6) is fixedly connected to the transmission end of the drive motor (5). The end of the drive screw (6) away from the drive motor (5) is connected to the support base (1) through a bearing.

3. The tooling for pipe inner wall penetration testing according to claim 2, characterized in that: The outer surface of the drive screw (6) is connected to a moving block (7) by a thread, and the moving block (7) slides with the support base (1).

4. The tooling for pipe inner wall penetration testing according to claim 3, characterized in that: The movable block (7) is vertically fixed to a connecting rod (8) on the side near the cylindrical support frame (2). The connecting rod (8) is made of high-strength aluminum alloy, and the other end of the connecting rod (8) is connected to the cylindrical support frame (2).

5. The tooling for pipe inner wall penetration testing according to claim 1, characterized in that: Four electric push rods (9) are evenly distributed along the circumferential direction in the middle of the inner wall of the cylindrical support frame (2). The transmission end of the electric push rod (9) extends to the outside through the through hole opened on the wall of the cylindrical support frame (2) and is fixedly connected to the telescopic rod (10).

6. The tooling for pipe inner wall penetration testing according to claim 5, characterized in that: The telescopic rod (10) is fixedly connected to a mounting block (11) at the end away from the electric push rod (9). The mounting block (11) is connected to a support pulley (12) through a bearing. The support pulley (12) is a polyurethane coated wheel.

7. The tooling for pipe inner wall penetration testing according to claim 1, characterized in that: The cylindrical support frame (2) has an annular spray pipe (13) fixedly installed on one end of its outer surface away from the connecting rod (8) by a clamp structure. Several nozzles (14) are evenly distributed along the circumference of the annular spray pipe (13). A hose (15) is connected to one side of the annular spray pipe (13).

Images