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Pipeline Safety Early Warning System and Method

A safety warning system and pipeline technology, applied in pipeline systems, mechanical equipment, gas/liquid distribution and storage, etc., can solve problems such as false alarms, and achieve the effect of ensuring sampling frequency and accurate safety warnings

Active Publication Date: 2017-06-13
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem in the prior art that false alarms are likely to be generated when the pipeline safety warning is issued, the embodiment of the present invention provides a pipeline safety warning system and method

Method used

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  • Pipeline Safety Early Warning System and Method
  • Pipeline Safety Early Warning System and Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The embodiment of the present invention provides a pipeline safety early warning system, see figure 1 , the system includes: a pipeline safety early warning system, the system includes:

[0049] a first laser 101, configured to provide a first laser;

[0050] an optical fiber interferometer 102, configured to receive the first laser light and generate a first interference light wave and a second interference light wave;

[0051] A photoelectric conversion module 103, configured to convert the first interference light wave and the second interference light wave into a first electrical signal and a second electrical signal;

[0052] a first optical fiber 104 laid along the duct;

[0053] Pulse laser generating device 105, used to provide pulse laser;

[0054] A coupling module 106, configured to input the pulsed laser into the first optical fiber, and output the backward coherent Rayleigh scattered light generated when the pulsed laser is transmitted in the first optic...

Embodiment 2

[0059] The embodiment of the present invention provides a pipeline safety early warning system, see figure 2 , the system consists of:

[0060] a first laser 201, configured to provide a first laser;

[0061] an optical fiber interferometer 202, configured to receive the first laser light and generate a first interference light wave and a second interference light wave;

[0062] A photoelectric conversion module 203, configured to convert the first interference light wave and the second interference light wave into a first electrical signal and a second electrical signal;

[0063] A first optical fiber 204 laid along the duct;

[0064] Pulse laser generating device 205, used to provide pulse laser;

[0065] A coupling module 206, configured to input the pulsed laser into the first optical fiber, and output the backward coherent Rayleigh scattered light generated when the pulsed laser is transmitted in the first optical fiber;

[0066] A photodetector 207, configured to ph...

Embodiment 3

[0085] The embodiment of the present invention provides a pipeline safety early warning method, see Figure 5 , the method includes:

[0086] Step 301: Provide a first laser.

[0087] Step 302: Use a fiber optic interferometer to receive the first laser light, and generate a first interference light wave and a second interference light wave.

[0088] The fiber optic interferometer may be a Mach-Zehnder fiber optic interferometer.

[0089] Step 303: Convert the first interference light wave and the second interference light wave into a first electrical signal and a second electrical signal.

[0090] Step 304: Obtain a second mixed vibration signal sequence according to the first electrical signal and the second electrical signal.

[0091] Specifically, the second mixed vibration signal sequence can be obtained according to the first electrical signal and the second electrical signal by using the delay estimation technique, such as image 3 As shown, it is not repeated here....

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Abstract

The invention discloses a pipeline safety early warning system and method, belonging to the field of pipeline monitoring. The system includes: a first laser, an optical fiber interferometer, used to generate a first interference light wave and a second interference light wave; a photoelectric conversion module, used to convert the first interference light wave and the second interference light wave into a first electrical signal and a second electrical signal Two electrical signals; a first optical fiber; a pulsed laser generating device, used to provide pulsed laser light; a coupling module, used to input pulsed laser light into the first optical fiber, and output backward coherent Rayleigh scattered light; a photodetector, used for coherent The Rayleigh scattered light is photoelectrically converted to obtain a third electrical signal; the processing module is used to process the first electrical signal, the second electrical signal and the third electrical signal to obtain vibration signals generated by different vibration sources. So as to give an early warning to pipeline safety.

Description

technical field [0001] The invention relates to the field of pipeline monitoring, in particular to a pipeline safety early warning system and method. Background technique [0002] The fiber optic pipeline safety warning system is a vibration detection system based on fiber optic sensing. By detecting whether there are vibration events in pipeline accessories, it can quickly judge and accurately locate oil and gas leakage, nearby mechanical construction and man-made sabotage, etc., so as to ensure the safety of the pipeline. safe operation. [0003] The above system is realized by a two-way Mach-Zehnder interferometer with backhaul function. The two-way Mach-Zehnder interferometer is composed of two multiplexers and demultiplexers and optical fibers connected between the two multiplexers and demultiplexers, and one of them The multiplexer and demultiplexer are electrically connected to the processing module. The processing module realizes the location of the vibration event...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17D5/02
Inventor 张金权李香文焦书浩祁君刘素杰杨依光祝宝利于立成赵锋杨文明张海潮高强
Owner BC P INC CHINA NAT PETROLEUM CORP
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