Corrosion monitoring device and method for pipeline integrity

Abstract

The invention provides a corrosion monitoring device and method for pipeline integrity, the device comprises a battery mounting seat and a monitoring integrated framework, the battery mounting seat and the monitoring integrated framework are connected through a universal adjusting device, the two ends of the battery mounting seat are provided with driving leather cups, and a power supply module is mounted in the battery mounting seat; a monitoring system is installed in the monitoring integrated framework and used for conducting corrosion monitoring on pipeline integrity, mileage counting devices are installed at the two ends of the monitoring integrated framework, and a mileage counting device is installed at the end, close to the monitoring integrated framework, of the battery installation base. An ultralow-frequency sound wave emitter is installed at the end, away from the monitoring integrated framework, of the battery installation base, and the ultralow-frequency sound wave emitter and the monitoring system are both electrically connected with the power supply module. The universal adjusting device is arranged between the battery mounting seat and the monitoring integrated framework, so that angle adjustment between the battery mounting seat and the monitoring integrated framework is realized, and the device can smoothly and flexibly move in a pipeline.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline monitoring, and in particular relates to a corrosion monitoring device and method for pipeline integrity. Background Art

[0002] By the end of 2017, the total mileage of long-distance oil and gas pipelines in China has reached nearly 180,000 kilometers. According to the plan and the current construction speed, the total mileage of pipelines will soon exceed 200,000 kilometers. Among them, the earliest laid oil and gas pipelines have been in service for more than 50 years. As the use time of pipelines increases, due to long-term burial and external environment, the anti-corrosion layer of the pipelines may be damaged, causing safety hazards. Once the pipeline is corroded, it may cause oil and gas leakage, fire or even explosion, causing significant economic losses, environmental pollution and loss of life.

[0003] Corrosion monitoring can be used to measure the internal corrosion conditions of pipelines and equipment. It can measure the internal corrosion of equipment when the equipment is operating normally. The accuracy of the corrosion monitoring results affects the staff's judgment on the integrity of the oil and gas pipeline.

[0004] The patent number of the announcement issued by the State Intellectual Property Office on January 28, 2022 is CN 215674259 U, and the patent name is "A real-time monitoring device for pipeline integrity". The monitoring device includes a cleaning unit, a data acquisition unit, a communication unit and an analysis and management unit. The communication unit is connected to the cleaning unit, the data acquisition unit and the analysis and management unit respectively. The cleaning unit is provided with a multi-stage cleaning component, and the data acquisition unit is provided with an internal detection component; the multi-stage cleaning component includes a foam pipe cleaner and a straight disc pipe cleaner, and the foam pipe cleaner and the straight disc pipe cleaner are respectively provided with a first positioning end and a first wireless communication end. After cleaning the impurities in the pipeline through the multi-stage cleaning component, the internal monitoring of the pipeline is carried out, which can ensure the smooth operation of the internal detection component and avoid the occurrence of jamming. The internal detection component transmits the monitoring data to the analysis and management unit in real time, and repairs the pipelines that need to be repaired in time, thereby realizing real-time monitoring of pipeline integrity. However, the data acquisition, communication and analysis accuracy and efficiency of the device are low, the monitoring speed is slow, and it cannot pass through the bend smoothly, and its application is limited. Summary of the invention

[0005] The purpose of the present invention is to provide a corrosion monitoring device for pipeline integrity to overcome the above technical problems existing in the prior art.

[0006] Another object of the present invention is to provide a corrosion monitoring method for pipeline integrity, which can improve the monitoring speed and facilitate the use of staff when comprehensively scanning and monitoring the oil and gas pipelines.

[0007] To this end, the technical solution provided by the present invention is as follows: A corrosion monitoring device for pipeline integrity comprises a battery mounting seat and a monitoring integrated skeleton, wherein the battery mounting seat and the monitoring integrated skeleton are connected via a universal adjustment device, drive leather cups are provided at both ends of the battery mounting seat, a power supply module is installed in the battery mounting seat, a monitoring system is installed in the monitoring integrated skeleton, the monitoring system is used for corrosion monitoring of pipeline integrity, mileage counting devices are installed at both ends of the monitoring integrated skeleton, the mileage counting device is installed at one end of the battery mounting seat close to the monitoring integrated skeleton, and an ultra-low frequency sound wave transmitter is installed at one end of the battery mounting seat away from the monitoring integrated skeleton, and the ultra-low frequency sound wave transmitter and the monitoring system are both electrically connected to the power supply module.

[0008] The universal adjustment device includes a fixing seat, a connecting rod and a connecting ball. The fixing seat is provided with a hemispherical accommodating hole. The connecting ball is arranged in the hemispherical accommodating hole. The connecting ball is fixedly connected to the connecting rod. The fixing seat is fixedly connected to the battery mounting seat. The connecting rod is connected to the monitoring integrated skeleton.

[0009] The universal adjustment device includes a connecting seat, a ball seat, a universal head and a guide rod. The connecting seat is threadedly connected to the ball seat, one end of the spherical part of the universal head is arranged in the ball seat, and the other end of the universal head ball is threadedly connected to the guide rod. There is a gap between the ball seat and the guide rod, the connecting seat is fixedly connected to the battery mounting seat, and the guide rod is connected to the monitoring integrated skeleton.

[0010] The mileage counting device includes a mileage counting wheel and a fixed frame, the fixed frame is rotatably connected to a support rod through a rotating shaft, the other end of the support rod is connected to a mounting frame, the mileage counting wheel is mounted on the mounting frame, a cross plate is provided on the fixed frame, support springs are installed on both the front and rear sides between the cross plate and the support rod, and a limit block is provided on one side of the fixed frame.

[0011] The monitoring system comprises a power conversion module, a switching module, a processor, an ultrasonic signal real-time processing module, an ultrasonic signal receiving module and a data storage module, wherein the power supply module is electrically connected to the switching module, the switching module is electrically connected to the processor via the power conversion module, and the ultrasonic signal real-time processing module, the ultrasonic signal receiving module and the data storage module are all electrically connected to the processor; The ultrasonic signal receiving module is used to collect and receive echo signals in the pipeline; the ultrasonic signal real-time processing module is used to amplify and filter ultrasonic weak echo signals; the data storage module is used to record the data transmitted by the ultrasonic signal real-time processing module in real time and export offline data. By measuring the reflection time of the echo, the lift-off value and the pipeline wall thickness value can be obtained to monitor the corrosion of the pipeline integrity; the power conversion module includes a high-voltage power module and a low-voltage power module, which are used to provide the required voltage.

[0012] The fixing seat is provided with a limit plate, and the limit plate is used to limit the connecting ball. The inner wall of the limit plate is rotatably connected to a plurality of balls, and the balls are in contact with the outer wall of the connecting ball. A positioning block is fixedly provided on one side of the limit plate, and a positioning slot cooperating with the positioning block is opened on the fixing seat.

[0013] An anti-collision bracket is installed at one end of the battery mounting seat, and the low-frequency sound wave transmitter is arranged in the anti-collision bracket.

[0014] A supporting leather cup is also arranged at the front of one end of the battery mounting seat away from the monitoring integrated skeleton, and the supporting leather cup is arranged between the ultra-low frequency sound wave transmitter and the driving leather cup.

[0015] A pipeline integrity corrosion monitoring method includes placing a pipeline integrity corrosion monitoring device into a pipeline. During the operation of the pipeline, a mileage counting device is closely attached to the inner wall of the pipeline, and an ultra-low frequency sound wave is emitted by an ultra-low frequency sound wave transmitter. The entire device is powered by a power supply module, an ultrasonic signal receiving module collects and receives echo signals in the pipeline, an ultrasonic signal real-time processing module amplifies and filters ultrasonic weak echo signals, a data storage module performs high-speed real-time recording of data transmitted by the ultrasonic signal real-time processing module, and offline data export. By measuring the reflection time of the echo, a lift-off value and a pipeline wall thickness value can be obtained, so as to monitor the corrosion of the pipeline integrity.

[0016] When passing through a curved pipeline, the angle between the battery mounting seat and the monitoring integrated skeleton is adjusted through the universal adjustment device, so that the corrosion monitoring device for pipeline integrity can move flexibly in the pipeline.

[0017] The beneficial effects of the present invention are: The pipeline integrity corrosion monitoring device provided by the present invention emits ultra-low frequency sound waves through an ultra-low frequency sound wave transmitter, an ultrasonic signal receiving module collects and receives echo signals in the pipeline, an ultrasonic signal real-time processing module amplifies and filters ultrasonic weak echo signals, and then a data storage module performs high-speed real-time recording of data transmitted by the ultrasonic signal real-time processing module and exports offline data. By measuring the reflection time of the echo, the lift-off value and the pipeline wall thickness value can be obtained, and the pipeline integrity is monitored for corrosion. When the oil and gas pipelines are comprehensively scanned and monitored, the monitoring speed can be improved, and it is convenient for the staff to use.

[0018] The monitoring device achieves angle adjustment between the battery mounting seat and the monitoring integrated frame by arranging a universal adjustment device between the battery mounting seat and the monitoring integrated frame, which helps the device to move smoothly and flexibly in the pipeline.

[0019] The mileage counting device of the present invention fixes the mileage counting wheel by the thrust of the support spring on the support rod and the limiting of the support rod by the limit block. When the pipeline is deformed, pressure is applied to the mileage counting wheel to compress the support spring, thereby ensuring good contact with the inner wall of the pipeline at all times. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of an implementation method of the present invention; Figure 2 It is a schematic structural diagram of an implementation scheme of a mileage counting device of the present invention; Figure 3 is a cross-sectional view of a first embodiment of the universal adjustment device of the present invention; Figure 4 It is a schematic diagram of a first embodiment of the universal adjustment device of the present invention; Figure 5 is a cross-sectional view of a second embodiment of the universal adjustment device of the present invention; Figure 6 It is a principle block diagram of the monitoring system of the present invention.

[0021] In the figure: 1. Battery mounting seat; 2. Driving leather cup; 3. Support leather cup; 4. Ultra-low frequency sound wave transmitter; 5. Anti-collision bracket; 6. Mileage counting device; 7. Fixed seat; 8. Connecting rod; 9. Monitoring integrated skeleton; 10. Limit block; 11. Fixed frame; 12. Cross plate; 13. Support spring; 14. Hemispherical receiving hole; 15. Connecting ball; 16. Limit plate; 17. Positioning slot; 18. Positioning plug; 19. Ball; 20. Power supply module; 21. Adapter module; 22. High-voltage power supply module; 23. Low-voltage power supply module; 24. Ultrasonic signal real-time processing module; 25. Processor; 26. Ultrasonic signal receiving module; 27. Data storage module; 28. Mileage counting wheel; 29. ​​Mounting frame; 30. Support rod; 31. Connecting seat; 32. Ball seat; 33. Universal head; 34. Guide rod. DETAILED DESCRIPTION

[0022] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0023] The exemplary embodiments of the present invention are now described with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely and to fully convey the scope of the present invention to those skilled in the art. The terms used in the exemplary embodiments shown in the accompanying drawings are not intended to limit the present invention. In the accompanying drawings, the same units / elements are marked with the same reference numerals.

[0024] Unless otherwise specified, the terms (including technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is understood that the terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings.

[0025] Example 1 This embodiment provides a corrosion monitoring device for pipeline integrity, such as Figure 1 As shown, it includes a battery mounting seat and a monitoring integrated skeleton 9, the battery mounting seat and the monitoring integrated skeleton 9 are connected by a universal adjustment device, driving leather cups 2 are provided at both ends of the battery mounting seat, a power supply module 20 is installed in the battery mounting seat, a monitoring system is installed in the monitoring integrated skeleton 9, and the monitoring system is used to perform corrosion monitoring on the integrity of the pipeline, mileage counting devices 6 are installed at both ends of the monitoring integrated skeleton 9, the mileage counting device 6 is installed at one end of the battery mounting seat close to the monitoring integrated skeleton 9, and an ultra-low frequency sound wave transmitter 4 is installed at one end of the battery mounting seat away from the monitoring integrated skeleton 9, and the ultra-low frequency sound wave transmitter 4 and the monitoring system are electrically connected to the power supply module 20.

[0026] The ultra-low frequency acoustic wave transmitter 4 and the monitoring system are powered by the power supply module 20, and the driving leather cup 2 is used to convert the pipeline power (such as oil, water) into the forward power of the device, so that the monitoring device can carry out in-pipeline monitoring at a reasonable moving speed.

[0027] The pipeline integrity corrosion monitoring device provided by the present invention realizes angle adjustment between the battery mounting seat and the monitoring integrated skeleton 9 by setting a universal adjustment device between the battery mounting seat and the monitoring integrated skeleton 9, which helps the device to move smoothly and flexibly in the pipeline.

[0028] Example 2 Based on Example 1, this example provides a corrosion monitoring device for pipeline integrity, such as Figure 3 and Figure 4 As shown, the universal adjustment device includes a fixing seat 7, a connecting rod 8 and a connecting ball 15. The fixing seat 7 is provided with a hemispherical accommodating hole 14. The connecting ball 15 is arranged in the hemispherical accommodating hole 14. The connecting ball 15 is fixedly connected to the connecting rod 8. The fixing seat 7 is fixedly connected to the battery mounting seat. The connecting rod 8 is connected to the monitoring integrated skeleton 9.

[0029] Since the connecting ball 15 can be flexibly rotated in the hemispherical receiving hole 14, it is convenient to adjust the angle between the battery mounting seat and the monitoring integrated skeleton 9, which helps the device to move smoothly and flexibly in the pipeline.

[0030] Example 3 On the basis of Example 1, this embodiment provides a corrosion monitoring device for pipeline integrity, wherein the universal adjustment device includes a connecting seat 31, a ball seat 32, a universal head 33 and a guide rod 34, wherein the connecting seat 31 is threadedly connected to the ball seat 32, one end of the spherical part of the universal head 33 is arranged in the ball seat 32, and the other end of the ball of the universal head 33 is threadedly connected to the guide rod 34, and there is a gap between the ball seat 32 and the guide rod 34, the connecting seat 31 is fixedly connected to the battery mounting seat, and the guide rod 34 is connected to the monitoring integrated skeleton 9.

[0031] like Figure 5 As shown, one end of the universal head 33 is cylindrical, and the other end of the universal head 33 is a sphere, the radius of the sphere is larger than the cylindrical shape, and the inner diameter of the ball seat 32 is smaller than the outer diameter of the sphere. During installation, the cylindrical shape of the universal head 33 is first passed through the ball seat 32 and then connected to the guide rod 34. Since the inner diameter of the ball seat 32 is smaller than the outer diameter of the sphere, the universal head 33 is stuck in the ball seat 32, and then the connecting seat 31 is installed and connected with the ball seat 32.

[0032] When passing through a certain curvature of the oil pipe, the connecting seat 31 rotates around the ball of the universal head 33, so that it can pass smoothly. Since there is a gap between the ball seat 32 and the guide rod 34, the connecting seat 31 drives the ball seat 32 to rotate at the same time, so that the device passes through the curved pipe.

[0033] Example 4 Based on Example 1, this example provides a corrosion monitoring device for pipeline integrity, such as Figure 2 As shown, the mileage counting device 6 includes a mileage counting wheel 28 and a fixed frame 11, the fixed frame 11 is rotatably connected to a support rod 30 through a rotating shaft, the other end of the support rod 30 is connected to a mounting frame 29, the mileage counting wheel 28 is mounted on the mounting frame 29, a cross plate 12 is provided on the fixed frame 11, support springs 13 are installed on both the front and rear sides between the cross plate 12 and the support rod 30, and a limit block 10 is provided on one side of the fixed frame 11.

[0034] The mileage counting wheel 28 is fixed by the thrust support of the support spring 13 on the support rod 30 and the limiting block 10 on the support rod 30. When the pipeline is deformed, pressure is applied to the mileage counting wheel 28 to compress the support spring 13, thereby ensuring good contact with the inner wall of the pipeline at all times.

[0035] Example 5 Based on Example 1, this example provides a corrosion monitoring device for pipeline integrity, such as Figure 6As shown, the monitoring system includes a power conversion module, a switching module 21, a processor 25, an ultrasonic signal real-time processing module 24, an ultrasonic signal receiving module 26 and a data storage module 27, the power supply module 20 is electrically connected to the switching module 21, the switching module 21 is electrically connected to the processor 25 through the power conversion module, and the ultrasonic signal real-time processing module 24, the ultrasonic signal receiving module 26 and the data storage module 27 are all electrically connected to the processor 25; The ultrasonic signal receiving module 26 is used to collect and receive echo signals in the pipeline; the ultrasonic signal real-time processing module 24 is used to amplify and filter ultrasonic weak echo signals; the data storage module 27 is used to record the data transmitted by the ultrasonic signal real-time processing module 24 in real time and export offline data. By measuring the reflection time of the echo, the lift-off value and the pipeline wall thickness value can be obtained to monitor the corrosion of the pipeline integrity; the power conversion module includes a high-voltage power module 22 and a low-voltage power module 23, which are used to provide the required voltage.

[0036] The present invention emits ultra-low frequency sound waves through the ultra-low frequency sound wave transmitter 4, the ultrasonic signal receiving module 26 collects and receives the echo signal in the pipeline, the ultrasonic signal real-time processing module 24 amplifies and filters the ultrasonic weak echo signal, and then the data storage module 27 records the data transmitted by the ultrasonic signal real-time processing module 24 in high-speed real-time and exports the offline data. By measuring the reflection time of the echo, the lift-off value and the pipeline wall thickness value can be obtained, and the corrosion monitoring of the pipeline integrity is carried out. When the oil and gas pipelines are comprehensively scanned and monitored, the monitoring speed can be improved, which is convenient for the staff to use.

[0037] Example 6 On the basis of Example 2, this embodiment provides a corrosion monitoring device for pipeline integrity, wherein a limit plate 16 is provided on the fixed seat 7, and the limit plate 16 is used to limit the connecting ball 15. A plurality of balls 19 are rotatably connected to the inner wall of the limit plate 16, and the balls 19 are in contact with the outer wall of the connecting ball 15. A positioning block 18 is fixedly provided on one side of the limit plate 16, and a positioning slot 17 cooperating with the positioning block 18 is opened on the fixed seat 7.

[0038] like Figure 3 As shown, the positioning block 18 on the limit plate 16 is inserted into the positioning slot 17 of the fixing seat 7, and then the limit plate 16 is installed on the right end of the fixing seat 7 by bolts. The connecting ball 15 is limited by the limit plate 16, and a plurality of balls 19 are rotatably connected to the inner wall of the limit plate 16, so as to reduce the rotational friction of the connecting ball 15.

[0039] Example 7 On the basis of Example 1, this example provides a corrosion monitoring device for pipeline integrity, wherein an anti-collision bracket 5 is installed at one end of the battery mounting seat, and the low-frequency sound wave transmitter is arranged in the anti-collision bracket 5.

[0040] like Figure 1 As shown, the anti-collision bracket 5 is used to protect the ultra-low frequency sound wave transmitter 4.

[0041] A supporting leather cup 3 is also installed at the front of one end of the battery mounting seat away from the monitoring integrated skeleton 9 , and the supporting leather cup 3 is arranged between the ultra-low frequency sound wave transmitter 4 and the driving leather cup 2 .

[0042] The supporting leather cup 3 can play a role in cleaning the pipeline.

[0043] Example 8 The present embodiment provides a corrosion monitoring method for pipeline integrity. A corrosion monitoring device for pipeline integrity is placed in the pipeline. During the operation of the pipeline, the mileage counting device 6 is close to the inner wall of the pipe, and ultra-low frequency sound waves are emitted by the ultra-low frequency sound wave transmitter 4. The power supply module 20 powers the entire device. The ultrasonic signal receiving module 26 collects and receives echo signals in the pipeline. The ultrasonic signal real-time processing module 24 amplifies and filters the ultrasonic weak echo signals. The data storage module 27 performs high-speed real-time recording of the data transmitted by the ultrasonic signal real-time processing module 24 and exports the offline data. By measuring the reflection time of the echo, the lift-off value and the pipeline wall thickness value can be obtained to monitor the corrosion of the pipeline integrity.

[0044] When passing through a curved pipeline, the angle between the battery mounting seat and the monitoring integrated skeleton 9 is adjusted by a universal adjustment device, so that the corrosion monitoring device for pipeline integrity can move flexibly in the pipeline.

[0045] The above examples are merely illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. All designs that are the same or similar to the present invention fall within the protection scope of the present invention.

Claims

1. A corrosion monitoring device for pipeline integrity, characterized in that: It includes a battery mounting seat and a monitoring integrated skeleton, which are connected by a universal adjustment device, drive leather cups are provided at both ends of the battery mounting seat, a power supply module is installed in the battery mounting seat, a monitoring system is installed in the monitoring integrated skeleton, and the monitoring system is used for corrosion monitoring of pipeline integrity, mileage counting devices are installed at both ends of the monitoring integrated skeleton, the mileage counting device is installed at one end of the battery mounting seat close to the monitoring integrated skeleton, and an ultra-low frequency sound wave transmitter is installed at one end of the battery mounting seat away from the monitoring integrated skeleton, and the ultra-low frequency sound wave transmitter and the monitoring system are electrically connected to the power supply module.

2. A pipeline integrity corrosion monitoring device according to claim 1, characterized in that: The universal adjustment device includes a fixing seat, a connecting rod and a connecting ball. The fixing seat is provided with a hemispherical accommodating hole. The connecting ball is arranged in the hemispherical accommodating hole. The connecting ball is fixedly connected to the connecting rod. The fixing seat is fixedly connected to the battery mounting seat. The connecting rod is connected to the monitoring integrated skeleton.

3. A corrosion monitoring device for pipeline integrity according to claim 1, characterized in that: The universal adjustment device includes a connecting seat, a ball seat, a universal head and a guide rod. The connecting seat is threadedly connected to the ball seat, one end of the spherical part of the universal head is arranged in the ball seat, and the other end of the universal head ball is threadedly connected to the guide rod. There is a gap between the ball seat and the guide rod, the connecting seat is fixedly connected to the battery mounting seat, and the guide rod is connected to the monitoring integrated skeleton.

4. A pipeline integrity corrosion monitoring device according to claim 1, characterized in that: The mileage counting device includes a mileage counting wheel and a fixed frame, the fixed frame is rotatably connected to a support rod through a rotating shaft, the other end of the support rod is connected to a mounting frame, the mileage counting wheel is mounted on the mounting frame, a cross plate is provided on the fixed frame, support springs are installed on both the front and rear sides between the cross plate and the support rod, and a limit block is provided on one side of the fixed frame.

5. A pipeline integrity corrosion monitoring device according to claim 1, characterized in that: The monitoring system comprises a power conversion module, a switching module, a processor, an ultrasonic signal real-time processing module, an ultrasonic signal receiving module and a data storage module, wherein the power supply module is electrically connected to the switching module, the switching module is electrically connected to the processor via the power conversion module, and the ultrasonic signal real-time processing module, the ultrasonic signal receiving module and the data storage module are all electrically connected to the processor; The ultrasonic signal receiving module is used to collect and receive echo signals in the pipeline; the ultrasonic signal real-time processing module is used to amplify and filter ultrasonic weak echo signals; the data storage module is used to record the data transmitted by the ultrasonic signal real-time processing module in real time and export offline data. By measuring the reflection time of the echo, the lift-off value and the pipeline wall thickness value can be obtained to monitor the corrosion of the pipeline integrity; the power conversion module includes a high-voltage power module and a low-voltage power module, which are used to provide the required voltage.

6. A pipeline integrity corrosion monitoring device according to claim 2, characterized in that: The fixing seat is provided with a limit plate, and the limit plate is used to limit the connecting ball. The inner wall of the limit plate is rotatably connected to a plurality of balls, and the balls are in contact with the outer wall of the connecting ball. A positioning block is fixedly provided on one side of the limit plate, and a positioning slot cooperating with the positioning block is opened on the fixing seat.

7. A pipeline integrity corrosion monitoring device according to any one of claims 1 to 6, characterized in that: An anti-collision bracket is installed at one end of the battery mounting seat, and the low-frequency sound wave transmitter is arranged in the anti-collision bracket.

8. A pipeline integrity corrosion monitoring device according to any one of claims 1 to 6, characterized in that: A supporting leather cup is also arranged at the front of one end of the battery mounting seat away from the monitoring integrated skeleton, and the supporting leather cup is arranged between the ultra-low frequency sound wave transmitter and the driving leather cup.

9. A method for monitoring corrosion of pipeline integrity, characterized in that: The pipeline integrity corrosion monitoring device described in any one of claims 1 to 6 is placed in a pipeline. During the operation of the pipeline, the mileage counting device is close to the inner wall of the pipe, and the ultra-low frequency sound wave is emitted by the ultra-low frequency sound wave transmitter. The power supply module powers the entire device, and the ultrasonic signal receiving module collects and receives the echo signal in the pipeline. The ultrasonic signal real-time processing module amplifies and filters the ultrasonic weak echo signal. The data storage module records the data transmitted by the ultrasonic signal real-time processing module at high speed in real time and exports the offline data. By measuring the reflection time of the echo, the lift-off value and the pipeline wall thickness value can be obtained to monitor the corrosion of the pipeline integrity.

10. A pipeline integrity corrosion monitoring method according to claim 9, characterized in that: When passing through a curved pipeline, the angle between the battery mounting seat and the monitoring integrated skeleton is adjusted through the universal adjustment device, so that the corrosion monitoring device for pipeline integrity can move flexibly in the pipeline.

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