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Detection method of thickness of non-metallic coating on inner wall of small-diameter long-distance pipeline

A non-metallic coating and thickness detection technology, applied in the direction of electric/magnetic thickness measurement, pipe components, special pipes, etc., can solve the problems of battery energy limitation, inability to detect long-distance pipelines, etc., achieve high data processing accuracy and reduce data The effect of communication distance and ease of promotion and use

Active Publication Date: 2021-05-07
TECHN MONITORING CENT OF CHANGQING PETROLEUM EXPLORATION BUREAU
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of the existing detection technologies are suitable for the detection of coatings on the inner wall of large pipes, and there are very few detections of coatings on small pipes. Moreover, the small diameter detection robot is limited by the battery energy, and the stroke is less than 800m. detection

Method used

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  • Detection method of thickness of non-metallic coating on inner wall of small-diameter long-distance pipeline
  • Detection method of thickness of non-metallic coating on inner wall of small-diameter long-distance pipeline
  • Detection method of thickness of non-metallic coating on inner wall of small-diameter long-distance pipeline

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Embodiment Construction

[0078] Such as figure 1 , figure 2 , Figure 8 to Figure 11 As shown, the method for detecting the thickness of the non-metallic coating on the inner wall of a small-diameter long-distance pipeline of the present invention uses a small-diameter long-distance pipeline inner wall non-metallic coating thickness detection system to detect the thickness of the small-diameter pipeline 63, and the small-diameter long-distance pipeline The non-metallic coating thickness detection system on the inner wall includes a first measuring vehicle 1, a second measuring vehicle 2, a first signal processing vehicle 3, a second signal processing vehicle 4, The third measuring car 5, the power conversion car 6, the battery car 7 and the electromagnetic positioning car 8, the two adjacent car bodies are connected by a hose 9, and the end of the electromagnetic positioning car 8 away from the battery car 7 is provided with a mileage measuring mechanism 10. A flange 64 is installed on the input po...

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Abstract

The invention discloses a method for detecting the thickness of a non-metallic coating on the inner wall of a small-caliber long-distance pipeline, comprising steps: 1. System installation; Collection; 4. Tracking the position of the vehicle body; 5. Obtaining the thickness of the non-metallic coating at each cross-sectional position on the inner wall of the small-diameter pipe; 6. Taking out the vehicle body to check for obstacles. The signal processing car of the present invention is placed between the three measuring cars, reducing the signal transmission length and signal interference, using the mileage measuring mechanism to record the traveling mileage of the car body, and the electromagnetic positioning car is arranged at the end to avoid the normal walking of the car body and the measurement of the car body during measurement. In order to avoid the interference of body sampling signal, an external high-pressure air source is used to push the one-shaped car body, and the location where the car body is jammed is found by the electromagnetic positioning vehicle, and the excavation and removal equipment is verified. Non-metallic coating thickness determines the thickness of the non-metallic coating on the cross-section, the measurement is reliable and valid.

Description

technical field [0001] The invention belongs to the technical field of coating thickness measurement on the inner wall of a small-diameter pipeline, and in particular relates to a method for detecting the thickness of a non-metallic coating on the inner wall of a small-diameter long-distance pipeline. Background technique [0002] Pipeline anticorrosion technology is a protection technology to prevent pipelines from being corroded by transport media (oil, natural gas, etc.). Most of the oil and gas being transported are corrosive, and the inner wall of the pipeline will be corroded if exposed to these corrosive media for a long time. Once the pipe wall is corroded too thin, it will not be able to withstand pressure, or even be corroded and perforated, resulting in oil and gas leakage, not only interrupting transportation, but also polluting the environment, even causing fire, and causing damage to people and property. Because most of the current transmission pipelines are m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/06G01B11/06F16L55/32F16L101/30
CPCF16L55/32F16L2101/30G01B7/105G01B11/0616
Inventor 陈安德梁桂海李振国周学军刘峰李岩胡同建秦峰李波郭煜锴
Owner TECHN MONITORING CENT OF CHANGQING PETROLEUM EXPLORATION BUREAU
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