Submarine pipeline suspended span vortex-induced vibration active monitoring system and method thereof

A vortex-induced vibration and monitoring system technology, which is applied to measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problems of reducing the service life of monitoring equipment, undetected, and energy waste, so as to reduce energy consumption and improve efficiency , the effect of shortening the time

Active Publication Date: 2016-02-10
CHINA NAT OFFSHORE OIL CORP +3
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Problems solved by technology

Based on passive vortex-induced vibration monitoring, if no vortex-induced vibration occurs, data transmission is also required, resulting in energy waste and reducing the service life of monitoring equipment
No relevant technical research has been found in China

Method used

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  • Submarine pipeline suspended span vortex-induced vibration active monitoring system and method thereof
  • Submarine pipeline suspended span vortex-induced vibration active monitoring system and method thereof
  • Submarine pipeline suspended span vortex-induced vibration active monitoring system and method thereof

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Embodiment 2

[0053] An active monitoring method for suspended vortex-induced vibration of submarine pipelines, see Figure 4 , the monitoring method includes the following steps:

[0054] 101: Determine whether the frequency of the X-axis acceleration data is twice the frequency of the Y-axis acceleration data. If yes, vortex-induced vibration occurs on the span 1, and go to step 102; if not, the vortex-induced vibration does not occur on the span 1, go to step 104 ;

[0055] 102: The underwater acoustic emission transducer 28 transmits the vortex-induced vibration frequency to the vortex-induced vibration monitoring center 4 through the underwater acoustic channel for early warning;

[0056] 103: The underwater acoustic receiving transducer 31 is always in the working state, the demodulator 35 and the decoder 36 receive the digital signal from the A / D converter 34, immediately perform demodulation and decoding, and display the vortex-induced vibration frequency information, end of proce...

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Abstract

The invention discloses a submarine pipeline suspended span vortex-induced vibration active monitoring system and a method thereof. A vortex-induced vibration monitoring device is used for obtaining and transmitting vortex-induced vibration information of a suspended span. When the frequency of X-axis acceleration data is two times of the frequency of Y-axis acceleration data, the suspended span generates vortex-induced vibration, and the vortex-induced vibration monitoring device transmits a vortex-induced vibration frequency to a vortex-induced vibration monitoring center through a water sound channel. A receiving and displaying device is used for receiving sound signals through the water sound channel, transmitting the sound signals into electric signals, processing the electric signals and displaying the frequency information of vortex-induced vibration. When the suspended span does not generate vortex-induced vibration, data transmission is not performed, and the vortex-induced vibration monitoring center keeps silent. According to the invention, the previous concept for passively monitoring the vortex-induced vibration of the suspended span is changed, data transmission is carried out only when the vortex-induced vibration is generated, the data transmission frequency is lowered, the energy consumption of the monitoring device is lowered, the time of determining the vortex-induced vibration is shortened, and the suspended span monitoring and managing efficiency is improved.

Description

technical field [0001] The invention relates to the field of submarine pipeline monitoring, in particular to an active monitoring system and method for suspended vortex-induced vibration of a submarine pipeline. Background technique [0002] Submarine pipelines are an important part of the offshore oil gathering and storage system, and play an important role in the development of offshore oil resources. They are known as the "lifeline" of offshore oil fields. Since the first submarine pipeline was laid in Galvestan, USA in 1936, submarine pipelines have been widely used in offshore oil and gas development worldwide. In 1985, my country laid the first submarine pipeline in Chengbei Oilfield. As of the end of 2013, my country's active submarine pipelines have exceeded 6,000 kilometers. However, due to the particularity of offshore oil gathering and transportation and the complexity of the marine environment, the safety and integrity of submarine pipelines encounter severe ch...

Claims

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Application Information

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IPC IPC(8): G01H17/00
Inventor 穆顷张建勇安振武申晓红李诚何轲曲杰刘晓东
Owner CHINA NAT OFFSHORE OIL CORP
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