Sensitive optical cable for long distance oil-gas pipeline safety detection

A technology for oil and gas pipelines and safety detection. It is applied in the direction of using optical devices to transmit sensing components, measuring devices, and fluid tightness testing. It can solve the problems that optical cables cannot detect and effectively detect pressure and vibration signals.

Inactive Publication Date: 2005-03-02
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The optical cable of this structure cannot detect the magnitude of pressure and vibration signals near the pipeline caused by pipeline leakage (related to the leakage intensity), nor can it detect external events that may endanger the safety of the pipeline (such as: crustal subsidence, excessive pressure, near the pipeline) Large-scale mechanical construction and man-made damage, etc.) for effective detection

Method used

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  • Sensitive optical cable for long distance oil-gas pipeline safety detection
  • Sensitive optical cable for long distance oil-gas pipeline safety detection
  • Sensitive optical cable for long distance oil-gas pipeline safety detection

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Embodiment Construction

[0016] see figure 1 , figure 2 with image 3 The sensor optical cable for safety detection of the oil and gas pipeline includes a rubber rope 140, and the center diameter on the inner diameter of the rubber rope 140 has a first round hole 114 and a second round hole 155 eccentrically arranged with the rubber rope 140; the first round hole 114 A tight sleeve 120 and a bundle of high-strength aramid yarns 113 for providing tensile strength placed in parallel with the tight sleeve 120 are installed inside, and a sensing optical fiber 110 is housed in the central circular hole 123 of the tight sleeve 120; There is a loose tube 153 and another bundle of high-strength aramid yarn 152 for providing tensile strength in the second circular hole 155, and there are multiple optical fibers 151 for communication between pipeline control stations in the loose tube 153; One side of the second circular hole 155 of the rubber rope 140 is provided with a layer of mesh cloth 131 larger than 1...

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Abstract

The invention discloses a sensing optical fiber for testing safety of long-distance oil-and-gas pipeline, including a rubber rope with first and second circular holes eccentricly installed on two sides of its central diameter, tight bush whose elastic modulus changes periodically with sensing optical fiber in it and a beam of tension resistance yarn placed paralleled with it are installed in the first circular hole, loose bush wherein are several optical fiber used to communicate to communicate and another beam of tension resistance placed paralleled with it are installed in the second circular hole. Besides the second circular hole is a layer of net cloth layer than 1/2 of rubber rope circumference and it is spirally wraped and fixed fixed by metal wire, having the same diameter with rubber rope and circumference of the diameter is packed successively by spiral metal wire mental wire and outer layer. Pipeline leaking and outer incident which may do harm to pipeline safety are accurately positioned through measurement to deflection light power of sensing optical fiber in sensing optical fiber along the pipeline.

Description

technical field [0001] The invention belongs to the technical field of signal detection and analysis, and relates to a structural design of a sensing optical cable, in particular to a sensing optical cable for safety detection of oil and gas pipelines. Background technique [0002] At present, there are many detection methods for oil and gas pipeline leakage, mainly including in-pipe detection methods based on magnetic flux, eddy current, camera and other pitching technologies, also known as pipeline crawlers; external detection based on pipeline pressure, temperature, flow, vibration and other operating parameters Methods, including flow difference, pressure difference, negative pressure wave and sound wave method. The advantage of the in-pipe detection method is high positioning accuracy, but the disadvantage is that it cannot be detected online, and it is prone to accidents such as blockage and outage, and has strict requirements on the pipeline. The advantage of the ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/353G01M3/00
Inventor 蒋庄德王延年赵玉龙
Owner XI AN JIAOTONG UNIV
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