Device for detecting the inner wall of a pipe

Abstract

This disclosure relates to a detection device for the inner wall of a pipeline, comprising a rotating assembly and a moving assembly. The rotating assembly is convexly connected to the moving assembly to drive the moving assembly to rotate. The moving assembly includes a first driving member and a moving member, which is convexly connected to the first driving member and capable of reciprocating movement. A laser rangefinder sensor is mounted on the moving member, and the laser rangefinder sensor is equipped with a converter for uploading sensor data to a mobile device. Through the above technical solution, the detection device for the inner wall of a pipeline provided by this disclosure helps to improve the measurement efficiency and accuracy of the pipeline inner wall, provides more comprehensive measurements, and reduces safety hazards.

Description

Technical Field

[0001] This disclosure relates to the field of pipeline inspection technology, and more specifically, to an inspection device for the inner wall of a pipeline. Background Technology

[0002] In modern industry and infrastructure construction, pipelines serve as vital carriers for transporting fluids (such as water, oil, and gas), and their safe operation is of paramount importance. In pipeline engineering construction, maintenance, and inspection, accurately obtaining relevant parameters of the pipeline's internal structure (such as inner diameter, inner wall smoothness, cracks, and damage) is a key aspect of ensuring the safe and stable operation of pipelines.

[0003] Traditional methods of manually measuring the inner wall of pipelines have several limitations. First, manual measurement is inefficient, requiring personnel to perform measurements section by section and point by point. This is particularly time-consuming and labor-intensive for long-distance or large-diameter pipelines, significantly impacting project progress. Second, manual measurement suffers from low accuracy. The results are heavily influenced by the operator's technique, experience, and the precision of the measuring tools, failing to meet the high-precision requirements of modern engineering. Third, operations in complex environments or hazardous pipelines pose significant safety threats to personnel. For example, in pipelines operating under high temperature, high pressure, or toxic / hazardous gas conditions, manual measurement could lead to injuries or fatalities. Furthermore, manual measurement makes it difficult to effectively monitor pipeline cracks and damage, and the limited measurement locations mean that some potential engineering hazards may go undetected, affecting the safe operation of the pipeline. Utility Model Content

[0004] The purpose of this disclosure is to provide a detection device for the inner wall of a pipe, which improves the measurement efficiency and accuracy of the inner wall of the pipe, provides a more comprehensive measurement, and reduces safety hazards.

[0005] To achieve the above objectives, this disclosure provides a detection device for the inner wall of a pipe, including a rotating assembly and a moving assembly. The rotating assembly is convexly connected to the moving assembly to drive the moving assembly to rotate. The moving assembly includes a first driving member and a moving member. The moving member is convexly connected to the first driving member and is capable of reciprocating movement. The moving member is equipped with a laser ranging sensor, and the laser ranging sensor is equipped with a converter for uploading sensor data to a mobile device.

[0006] Optionally, the moving component further includes a base, a lead screw, and a nut threadedly engaged with the lead screw. The first driving member is mounted on the base and is connected to the lead screw via a transmission. The base is provided with a guide rail, the moving member is slidably engaged with the guide rail, and the moving member is connected to the nut so that the moving member moves with the nut.

[0007] Optionally, the rotating assembly includes a second driving member, both the first and second driving members are motors, and the first and second driving members are connected by a first coupling.

[0008] Optionally, an electrical slip ring is fitted on the lead screw, and the detection device for the inner wall of the pipe further includes a driver, which is electrically connected to the mobile device. The wires of the first driver and the second driver pass through the electrical slip ring and are then electrically connected to the driver.

[0009] Optionally, the moving component, the electrical slip ring, the first driving component, and the second driving component are arranged sequentially along the axial direction of the lead screw.

[0010] Optionally, the converter is a TTL converter.

[0011] Optionally, a flange is fitted onto the lead screw, and the first driving component is mounted on the base via the flange.

[0012] Optionally, the laser rangefinder is detachably mounted to the moving part via threaded fasteners.

[0013] Through the above technical solution, in the pipeline inner wall detection device provided in this disclosure, the rotating component drives the moving component to rotate, while the moving part in the moving component reciprocates, enabling the laser rangefinder sensor to quickly and comprehensively scan and detect the pipeline inner wall. Compared with traditional manual measurement methods, this significantly shortens the detection time and improves detection efficiency. Furthermore, the laser rangefinder sensor used in this application can accurately measure the distance between the pipeline inner wall and the sensor. Combined with the precise motion control of the moving and rotating components, accurate parameters of various points on the pipeline inner wall can be obtained, avoiding the errors and uncertainties of manual measurement. It also overcomes the limitations of traditional manual measurement's single-position limitation, enabling timely detection of engineering hazards such as cracks and damage on the pipeline inner wall, ensuring the safe operation of the pipeline.

[0014] Furthermore, the detection device for the inner wall of pipelines provided in this disclosure does not require manual entry into complex environments or dangerous pipelines to perform measurement operations. Operators can remotely control the detection device and obtain detection data using a converter from outside the pipeline via mobile devices, effectively ensuring personnel safety and avoiding safety accidents that may be caused by manual measurement.

[0015] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the detection device for the inner wall of a pipe provided in an embodiment of this disclosure; Figure 2 This is a schematic diagram of the cooperation between the detection device for the inner wall of a pipe and the pipe provided in the embodiments of this disclosure; Figure 3 This is a cross-sectional view of the pipe and the detection device for the inner wall of the pipe provided in the embodiments of this disclosure; Figure 4 This is a cross-sectional view of a device for detecting the inner wall of a pipe provided in an embodiment of this disclosure.

[0017] Explanation of reference numerals in the attached drawings: 1. Rotating assembly; 10. Pipe to be tested; 11. Second driving component; 2. Moving assembly; 21. First driving component; 22. Moving component; 23. Base; 24. Lead screw; 25. Nut; 26. Guide rail; 27. Flange; 3. Laser rangefinder sensor; 4. First coupling; 5. Electric slip ring; 6. Second coupling. Detailed Implementation

[0018] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0019] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" are used relative to the contour of the corresponding component itself. Furthermore, the terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not have sequential or importance implications. In the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements. The above definitions are for explanation and illustration only and should not be construed as limiting this disclosure.

[0020] According to exemplary embodiments of this disclosure, reference is made to Figures 1 to 4 As shown, a detection device for the inner wall of a pipe is provided, including a rotating component 1 and a moving component 2. The rotating component 1 is convexly connected to the moving component 2 to drive the moving component 2 to rotate. The moving component 2 includes a first driving member 21 and a moving member 22. The moving member 22 is convexly connected to the first driving member 21 and can reciprocate. The moving member 22 is provided with a laser rangefinder 3, and the laser rangefinder 3 is provided with a converter for uploading sensor data to a mobile device.

[0021] Through the above technical solution, in the detection device for the inner wall of a pipeline provided in this disclosure, the rotating component 1 drives the moving component 2 to rotate, while the moving part 22 in the moving component 2 reciprocates, enabling the laser rangefinder 3 to quickly and comprehensively scan and detect the inner wall of the pipeline 10 under test. Compared with the traditional manual measurement method, this greatly shortens the detection time and improves the detection efficiency. In addition, the laser rangefinder 3 used in this application can accurately measure the distance between the inner wall of the pipeline 10 under test and the sensor. Combined with the precise motion control of the moving component 2 and the rotating component 1, accurate parameters of each point on the inner wall of the pipeline 10 under test can be obtained, avoiding the errors and uncertainties of manual measurement, and overcoming the limitations of the single position of traditional manual measurement. It can promptly detect engineering hazards such as cracks and damage on the inner wall of the pipeline 10 under test, ensuring the safe operation of the pipeline 10 under test.

[0022] Furthermore, the detection device for the inner wall of a pipeline provided in this disclosure does not require manual entry into complex environments or dangerous pipelines 10 to perform measurement operations. Operators can remotely control the detection device and acquire detection data using a converter from outside the pipeline 10, effectively ensuring the safety of personnel and avoiding safety accidents that may be caused by manual measurement.

[0023] In this disclosure, the mobile device can be a tablet or a portable computer. The sampling rate and measurement parameters can be easily set and adjusted via the mobile device. The data collected by the laser rangefinder 3 can be uploaded to the mobile device in real time via a converter, facilitating the analysis of the measurement results. In this way, this application is applicable to measurement scenarios of different types and working conditions of the pipeline 10 under test, possessing strong versatility and adaptability, and capable of meeting diverse measurement needs.

[0024] In the specific embodiments provided in this disclosure, the converter is a TTL converter. TTL converters have advantages such as high data transmission speed, strong anti-interference capability, and low cost. In this pipe inner wall detection device, the TTL converter can convert the analog or digital signals collected by the laser rangefinder 3 into a signal format suitable for transmission and processing on mobile devices, ensuring the accuracy and stability of the data during transmission. Furthermore, through the TTL converter, operators can quickly and accurately acquire detection data of the inner wall of the pipe 10 under test, improving detection efficiency and data processing capabilities.

[0025] In the specific embodiments provided in this disclosure, reference is made to Figures 1 to 4As shown, the movable component 2 may also include a base 23, a lead screw 24, and a nut 25 threadedly engaged with the lead screw 24. A first driving member 21 is mounted on the base 23 and is connected to the lead screw 24 in a transmission manner. A guide rail 26 is provided on the base 23. The movable member 22 is slidably engaged with the guide rail 26 and is connected to the nut 25 so that the movable member 22 moves with the nut 25.

[0026] In the above technical solution, since the nut 25 is threadedly engaged with the lead screw 24, the rotation of the lead screw 24 is converted into linear motion of the nut 25 along the axis of the lead screw 24. The guide rail 26 provided on the base 23 provides guidance for the movement of the moving part 22. The moving part 22 is slidably connected to the guide rail 26 and is also connected to the nut 25. In this way, the linear motion of the nut 25 can drive the moving part 22 to make stable reciprocating movement on the guide rail 26. Thus, through the cooperation of the lead screw 24, the nut 25, the first driving part 21 and the guide rail 26, the moving distance and speed of the moving part 22 can be precisely controlled, thereby improving the accuracy and stability of the laser rangefinder sensor 3 in measuring the inner wall parameters of the pipe 10 under test.

[0027] In this disclosure, reference is made to Figure 3 and Figure 4 As shown, the first driving member 21 and the lead screw 24 can be connected by the second coupling 6; the moving member 22 can be a slider, and the moving member 22 is sleeved on the lead screw 24.

[0028] In the specific embodiments provided in this disclosure, reference is made to Figures 1 to 4 As shown, the rotating assembly 1 may include a second driving component 11. Both the first driving component 21 and the second driving component 11 are motors, and the first driving component 21 and the second driving component 11 are connected by a first coupling 4. The first coupling 4 can effectively transmit torque, ensuring the stability of power transmission between the rotating assembly 1 and the moving assembly 2. It can also compensate for certain angular deviations and axial displacements between the two shafts, improving the reliability and adaptability of the transmission system. In actual operation, the second driving component 11 drives the first driving component 21 to rotate through the first coupling 4, thereby realizing the rotation of the moving assembly 2, enabling the laser rangefinder 3 to perform omnidirectional scanning and detection of the inner wall of the pipe 10 to be measured.

[0029] In this disclosure, both the first driving component 21 and the second driving component 11 can be stepper motors, and the first coupling 4 can be a rigid flange coupling. This disclosure does not impose any specific restrictions on this.

[0030] In the specific embodiments provided in this disclosure, reference is made to Figure 3 and Figure 4As shown, an electrical slip ring 5 can be fitted onto the lead screw 24. The detection device for the inner wall of the pipe also includes a driver, which is electrically connected to the moving device. The wires of the first driving member 21 and the second driving member 11 pass through the electrical slip ring 5 and are then electrically connected to the driver. Here, the function of the electrical slip ring 5 is to ensure the stability of the wire connection during the rotation of the lead screw 24, thereby achieving continuous transmission of electrical signals and power between the rotating and stationary components. When the moving component 2 rotates under the drive of the rotating component 1, the lead screw 24 also rotates accordingly. Without the electrical slip ring 5, the wires would become tangled and pulled due to the rotation of the lead screw 24, leading to unstable circuit connections or even damage. Through the electrical slip ring 5, the first driving member 21 and the second driving member 11 can continuously and stably obtain electrical energy and control signals from the driver, ensuring the normal operation of the detection device.

[0031] In the specific embodiments provided in this disclosure, reference is made to Figure 1 , Figure 3 and Figure 4 As shown, the moving part 22, the electric slip ring 5, the first driving part 21, and the second driving part 11 can be arranged sequentially along the axis of the lead screw 24. This layout makes the entire detection device more compact, reduces the space occupied by the device, and facilitates installation and operation within the limited space inside the pipe 10 to be tested. At the same time, it facilitates the connection and wiring between the components, improving the assembly efficiency and reliability of the device.

[0032] In the specific embodiments provided in this disclosure, reference is made to Figures 1 to 4 As shown, a flange 27 can be fitted onto the lead screw 24, and the first driving component 21 is mounted on the base 23 via the flange 27. In the above technical solution, mounting holes can be opened on the side and bottom of the flange 27, so that the flange 27 can be connected to the first driving component 21 and the base 23 respectively. This allows the first driving component 21 to be mounted on the base 23 via the flange 27, ensuring the connection strength and stability between the first driving component 21 and the base 23, and preventing the first driving component 21 from loosening or shifting during operation. Simultaneously, the use of the flange 27 facilitates the disassembly and maintenance of the first driving component 21. When the first driving component 21 malfunctions, the operator can quickly remove the first driving component 21 for inspection or replacement by disassembling the flange 27, improving the maintenance convenience of the testing device.

[0033] In the specific embodiments provided in this disclosure, reference is made to Figure 1As shown, the laser rangefinder sensor 3 can be detachably mounted to the moving part 22 using threaded fasteners. This configuration allows operators to easily remove the laser rangefinder sensor 3 by unscrewing the threaded fasteners and performing the necessary operations when the laser rangefinder sensor 3 malfunctions or requires calibration or replacement, using simple tools such as a screwdriver. The detachable mounting method also facilitates upgrades and maintenance of the laser rangefinder sensor 3, improving the versatility and scalability of the detection device.

[0034] Reference Figures 1 to 4 As shown in the figure, the method of using the inspection device for the inner wall of a pipe provided in this disclosure is detailed below: Before testing, the testing device, originally intended for the inner wall of the pipe, is placed near one end of the lead screw 24 and inserted into the pipe 10 under test through the opening at one end until it reaches the desired position. Then, the operator sends a control command to the driver via a mobile device (such as a tablet). The driver activates the second drive component 11, which in turn drives the first drive component 21 to rotate via the first coupling 4, thereby causing the moving component 2 to rotate. Simultaneously, the driver controls the first drive component 21 to rotate, which in turn drives the lead screw 24. The rotation of the lead screw 24 is converted into the reciprocating movement of the moving component 22 via the nut 25. During the reciprocating movement of the moving component 22 and the rotation of the rotating component 1, the laser ranging sensor 3 continuously emits a laser beam to measure the distance between the inner wall of the pipe 10 under test and the sensor. The measurement data is then uploaded to the tablet via a TTL converter. The operator can view the testing data in real time on the tablet and generate a testing report for the inner wall of the pipe 10 under test.

[0035] If multiple measurements are required, repeat the above steps. During each measurement, you can adjust the measurement parameters via mobile device according to the actual situation, such as changing the sampling rate and motor speed, to adapt to different measurement scenarios and obtain more comprehensive and accurate measurement data.

[0036] It should be noted that this application can adjust some components according to the type of pipeline 10 to be tested. For example, when the pipeline 10 to be tested is a natural gas transmission pipeline, according to the detection requirements of natural gas transmission pipelines, the second drive component 11 and the first drive component 21 can be selected as explosion-proof servo motors to ensure safe operation in a flammable and explosive natural gas environment. The lead screw 24 and nut 25 are made of wear-resistant materials to improve their reliability during long-term use. The laser rangefinder 3 is selected as a high-precision laser rangefinder 3 model LDM301. This sensor has high anti-interference ability and can work stably in complex electromagnetic environments. It can more accurately detect small defects on the inner wall of the natural gas transmission pipeline. After the detection device completes the scanning detection of the inner wall of the pipeline 10 to be tested, it transmits the detection data to the mobile device. The operator analyzes and processes the data to determine whether there are cracks, corrosion and other problems on the inner wall of the pipeline 10 to be tested, and formulates corresponding maintenance and repair measures based on the analysis results.

[0037] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0039] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A detection device for the inner wall of a pipe, characterized in that, It includes a rotating component (1) and a moving component (2). The rotating component (1) is connected to the moving component (2) to drive the moving component (2) to rotate. The moving component (2) includes a first driving member (21) and a moving member (22). The moving member (22) is connected to the first driving member (21) and can reciprocate. The moving member (22) is provided with a laser ranging sensor (3). The laser ranging sensor (3) is provided with a converter that uploads sensor data to a mobile device.

2. The detection device for the inner wall of a pipeline according to claim 1, characterized in that, The moving component (2) further includes a base (23), a lead screw (24), and a nut (25) threadedly engaged with the lead screw (24). The first driving member (21) is mounted on the base (23) and is connected to the lead screw (24) in a transmission manner. The base (23) is provided with a guide rail (26). The moving member (22) is slidably engaged with the guide rail (26) and is connected to the nut (25) so that the moving member (22) moves with the nut (25).

3. The detection device for the inner wall of a pipeline according to claim 2, characterized in that, The rotating assembly (1) includes a second driving member (11), both the first driving member (21) and the second driving member (11) are motors, and the first driving member (21) and the second driving member (11) are connected by a first coupling (4).

4. The detection device for the inner wall of a pipeline according to claim 3, characterized in that, An electrical slip ring (5) is fitted on the lead screw (24). The detection device for the inner wall of the pipe also includes a driver. The driver is electrically connected to the mobile device. The wires of the first driver (21) and the second driver (11) pass through the electrical slip ring (5) and are then electrically connected to the driver.

5. The detection device for the inner wall of a pipeline according to claim 4, characterized in that, The moving part (22), the electrical slip ring (5), the first driving part (21) and the second driving part (11) are arranged sequentially along the axial direction of the lead screw (24).

6. The detection device for the inner wall of a pipeline according to any one of claims 1 to 5, characterized in that, The converter is a TTL converter.

7. The detection device for the inner wall of a pipeline according to claim 2, characterized in that, A flange (27) is fitted onto the lead screw (24), and the first drive member (21) is mounted on the base (23) through the flange (27).

8. The detection device for the inner wall of a pipeline according to claim 1, characterized in that, The laser rangefinder (3) is detachably mounted to the movable part (22) by means of threaded fasteners.

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