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A distributed water temperature measuring device in a pipeline

A measuring device and distributed technology, applied in the direction of measuring devices, measuring heat, thermometers, etc., can solve the problems of increasing complexity and achieve the effect of small optical fiber

Active Publication Date: 2020-12-08
NANJING INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the thermistor or thermocouple used in the traditional temperature measurement system needs to be waterproofed when used in water, which increases the complexity

Method used

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  • A distributed water temperature measuring device in a pipeline
  • A distributed water temperature measuring device in a pipeline
  • A distributed water temperature measuring device in a pipeline

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Embodiment Construction

[0018] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, a distributed water temperature measurement device in a pipeline of the present invention includes a light source, a coupler, an OTDR and several temperature sensors; the light source is used to emit light signals; the coupler is used to receive and transmit light signals; the The temperature sensor is distributed in the pipeline, and the temperature sensor is an optical fiber structure with a gap. When the optical signal transmitted in the optical fiber structure passes through the plane gap, the change of the water temperature in the gap changes the light intensity of the transmitted light. The change of the light intensity is used to It is used to detect the change of water temperature; the OTDR is used to detect the different light intensities reflected by the temperature sensor as the temperature changes, ...

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Abstract

The invention discloses a distributed water temperature measuring device in a pipeline, which includes a light source, a coupler, an OTDR and several temperature sensors; the light source is used to emit light signals; the coupler is used to receive and transmit light signals; the temperature sensors are distributed in the pipeline, and the temperature The sensor is an optical fiber structure with a gap. When the optical signal transmitted in the optical fiber structure passes through the plane gap, the change of water temperature in the gap changes the light intensity of the transmitted light, and the change of light intensity is used to detect the change of water temperature; OTDR is used to detect the temperature The different light intensities reflected by the sensor as the temperature changes, and at the same time form a graph of the relationship between distance and light intensity to reflect changes in water temperature. The invention uses optical fiber to transmit optical signals in water, avoiding the high-demand waterproof treatment of electronic equipment underwater; the optical fiber is small in size, and can also be applied in small-sized pipelines (such as ground heating water pipelines), without affecting the liquid in the pipeline flow rate.

Description

technical field [0001] The invention belongs to the technical field of water temperature measurement in pipelines, and in particular relates to a distributed water temperature measurement device in pipelines. Background technique [0002] With the advancement of the demand for energy saving and environmental protection, for example, in the central heating of urban and rural households, or the water cooling circulation system of power plants, accurate grasp of the change of water temperature in the pipeline can more effectively monitor the temperature in real time. However, the thermistor or thermocouple used in the traditional temperature measurement system needs to be waterproofed when used in water, which increases the complexity. [0003] The optical fiber sensor can use optical fiber as a sensitive device, and characterize the change of temperature according to the change of light transmitted in the optical fiber. Because the optical fiber is made of quartz, its perform...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/32
CPCG01K11/32
Inventor 魏峘张健赵静覃翠余辉龙何睿清
Owner NANJING INST OF TECH
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