Distributed optical fiber temperature measuring device and temperature measuring method for normal temperature conveying pipeline

A distributed optical fiber and transmission pipeline technology, applied in the field of temperature sensing, can solve the problems of increased safety risks of power cables, increased energy consumption, and lack of intrinsic safety of optical fiber sensors, etc., to achieve fast and accurate leak detection, prolong service life, Reduce the effect of false positives

Inactive Publication Date: 2018-12-07
青岛汇安谷科技发展有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, there are many problems with this method. First, it increases energy consumption, and the passive advantages of optical fiber sensin

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  • Distributed optical fiber temperature measuring device and temperature measuring method for normal temperature conveying pipeline
  • Distributed optical fiber temperature measuring device and temperature measuring method for normal temperature conveying pipeline

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[0021] Such as figure 1 As shown, a distributed optical fiber temperature measurement device for a normal temperature transmission pipeline includes a transmission pipeline 2 for conveying normal temperature medium, and a temperature sensing optical cable 3 and a heating pack 4 laid in parallel with the transmission pipeline 2 and located under the transmission pipeline. The conveying pipe 2, the temperature-sensitive optical cable 3, and the heating pack 4 are sealed in the outer pipe 1 of the enclosed space. The temperature-sensitive optical cable is connected to the DTS host, and the heating pack 4 is a passive heat source. The outer pipe 1 is sheathed or C-shaped embedding to wrap the conveying pipe 2, the temperature-sensitive optical cable 3 and the heating pack 4. The heating pack 4 is covered with a desiccant. The main components of the heating pack are quicklime, calcium carbonate, iron powder, aluminum powder, magnesium powder, charcoal, and salt. It has a lower price ...

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Abstract

The invention relates to a distributed optical fiber temperature measuring device for a normal temperature conveying pipeline. The device comprises a conveying pipeline, a temperature sensing opticalcable, a heater and an outer pipeline; the conveying pipeline is used for conveying a normal temperature medium; the temperature sensing optical cable and the heater are laid in parallel with the conveying pipeline and are located below the conveying pipeline; the outer pipeline is used for sealing the conveying pipeline, the temperature sensing optical cable and the heater in a closed space; thetemperature sensing optical cable is connected with a DTS host; and the heater is a passive heat source. According to the distributed optical fiber temperature measuring device for the normal temperature conveying pipeline of the invention, the external pipeline can accumulate liquid, and the heater can perform quick heating, and therefore, faster and more accurate leak detection can be realized,and the possibility of false alarms can be greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of temperature sensing, and in particular relates to a distributed optical fiber temperature measuring device and a temperature measuring method for normal temperature transmission pipelines. Background technique [0002] As a new type of sensor, distributed optical fiber sensing technology has inherent advantages such as large capacity, long distance, high precision, and anti-interference, and has developed rapidly in recent years. Among them, the distributed optical fiber temperature sensing system (DTS) is the most successful representative of commercialization. It is based on the temperature sensitive effect (temperature difference) to realize the distributed monitoring of linear assets (such as cables, tunnels, pipelines). , High-temperature liquid leakage and high-pressure gas leakage and other application scenarios play a role. [0003] However, for pipelines transported at room temperature, because ...

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Application Information

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IPC IPC(8): G01K11/32G01K1/08
CPCG01K11/32
Inventor 刘永利魏茂安徐成山姚彬
Owner 青岛汇安谷科技发展有限公司
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