Inner detection system for submarine pipelines and detection method thereof

A detection system, a technology for submarine pipelines, applied in pipeline systems, mechanical equipment, gas/liquid distribution and storage, etc., can solve the problems of complex, difficult and high cost detection tasks, and achieve the ability to ensure climbing and passing through risers , low cost and low power consumption

Active Publication Date: 2013-08-14
TIANJIN UNIV
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This will lead to the problems of complex detectio

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  • Inner detection system for submarine pipelines and detection method thereof
  • Inner detection system for submarine pipelines and detection method thereof
  • Inner detection system for submarine pipelines and detection method thereof

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[0045] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0046] In order to solve the above problems, there is an urgent need for a practical in-pipeline detection system that is more targeted, more reliable, and more convenient to implement, so as to carry out shorter cycle and higher frequency detection of submarine pipelines, so as to grasp the submarine pipelines in time. Leakage, drift, deformation, damage and other abnormal states, and early defects such as small leaks are found at the first time, and repair measures are taken as soon as possible to prevent problems before they occur.

[0047] An internal inspection system for subsea pipelines, such as figure 1 As shown, it includes: a support frame 2, an electronic sealing chamber 1 is arranged inside the support frame 2, and an annularly di...

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Abstract

The invention discloses an inner detection system for submarine pipelines and a detection method thereof. The inner detection system comprises an electronic sealed cabin arranged in a supporting frame. The supporting frame is provided with a supporting roller array, an odometer wheel, a pressure sensor, a temperature sensor and a sound sensor, wherein the supporting roller array, the odometer wheel, the pressure sensor, the temperature sensor and the sound sensor are distributed in an annular mode. The detection method includes: the inner detection system is connected to an upper computer to download signals collected by the sensors, and filtering and noise reduction processing is performed on the signals; traveling mileage of the inner detection system and included angles of the axis of the inner detection system and a local geomagnetic field and local gravitational acceleration are calculated at any time t, and a direction vector of the axis of the inner detection system is obtained through the included angles; the position of the inner detection system at any time is obtained; and whether leakage exists is judged through comparison of processed sound signals, pressure signals and temperature signals, and leakage rate is estimated. The inner detection system for submarine pipelines and the detection method of the inner detection system achieve detection of little leakage, improve detection accuracy, reduce detection difficulty and cost, and shorten detection period.

Description

technical field [0001] The invention relates to the field of pipeline internal detection, in particular to an internal detection system and a detection method for submarine pipelines. Background technique [0002] While submarine oil and gas pipelines play a very important role in the national economy, shocking pipeline leakage accidents often occur, and with the increase in the number of submarine pipelines, it will become more and more serious. However, many serious submarine pipeline leakage accidents gradually develop from undetectable tiny leaks or inconspicuous early defects. If it is possible to conduct regular inspections and safety assessments of abnormal states such as drifting, bending, exposure, or suspension of submarine pipelines, and timely discover small leaks caused by corrosion, aging, cracks, and deformation, take remedial measures as soon as possible to eliminate potential risks to pipeline operation. Potential safety hazards can effectively prevent the ...

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Application Information

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IPC IPC(8): F17D5/02F17D5/06
Inventor 靳世久黄新敬陈世利李健李一博
Owner TIANJIN UNIV
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