Fiber grating sensor calibration device based on liquid nitrogen conduction cooling

A fiber grating and conduction cooling technology, which is applied to measuring devices, instruments, scientific instruments, etc., can solve the problems of long heating and cooling time, expensive refrigerators, no unique design of sensors, etc., and achieve the effect of reducing heat leakage

Active Publication Date: 2019-12-13
BEIJING JIAOTONG UNIV
View PDF10 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the price of general refrigerators is relatively expensive, and it takes a long time to heat up and down, and there is no unique design for sensor laying

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fiber grating sensor calibration device based on liquid nitrogen conduction cooling
  • Fiber grating sensor calibration device based on liquid nitrogen conduction cooling
  • Fiber grating sensor calibration device based on liquid nitrogen conduction cooling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0038] Such as Figure 1 to Figure 3 As shown, the embodiment of the present invention provides a fiber grating sensor calibration device based on liquid nitrogen conduction cooling, which includes a liquid storage tank 1 , and a liquid storage tank cover 2 is arranged on the top of the liquid storage tank 1 . The liquid storage barrel 1 and the barrel cover 2 are sealed with epoxy resin, which can reduce the temperature exchange between the inside of the tank and the outside.

[0039] The liquid storage barrel 1 is provided with a heat insulating device, a temperature regulating barrel 3, a fiber grating sensor and a temperature reference sensor; Temperature barrel 3; an isolation tube 4 is provided inside the temperature adjustment barrel 3, and the lower end of the isolation tube 4 runs through the bottom of the temperature adjustment barrel 3 and communicates with the heat insulation device.

[0040] The heat insulation device includes a heat insulation barrel 8, the heat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a fiber grating sensor calibration device based on liquid nitrogen conduction cooling, and belongs to the technical field of sensor calibration devices. A liquid storage barrelcover is arranged at the top of a liquid storage barrel, a heat insulation device is arranged at the bottom of the liquid storage barrel, and a temperature regulating barrel is arranged above the heatinsulation device; an isolating tube is arranged in the temperature regulating barrel, and the lower end of the isolating tube penetrates through the bottom of the temperature regulating barrel and communicates with the insulating device; a fixing rod penetrates through the isolating tube and is movably inserted into the heat insulation device; a fiber grating sensor and a temperature reference sensor are arranged in the fixing rod; and a first pipeline and a second pipeline are arranged on the liquid storage barrel cover, and liquid nitrogen is added into the liquid storage barrel and the temperature regulating barrel respectively. The fiber grating sensor is calibrated in a liquid nitrogen conduction refrigeration mode, and the calibration of the fiber grating sensor in the temperaturerange of 77 to 293 K is realized; and the fiber grating sensor and the temperature reference sensor can be conveniently and safely laid into a temperature change device, the leakage heat is reduced through isolation, and the temperature of the sensor is easier to reach 77 K.

Description

technical field [0001] The invention relates to the technical field of sensor calibration devices, in particular to a fiber grating sensor calibration device based on liquid nitrogen conduction cooling. Background technique [0002] Due to its small size, light weight, anti-electromagnetic interference, and easy reuse, fiber grating sensors are considered to be sensor devices that can replace traditional electrical signal sensors in the field of high-temperature superconducting magnets. The application of fiber grating sensors in the field of superconductivity is mainly to measure temperature and strain. [0003] According to the principle of the sensor, when using the sensor for absolute temperature measurement, the sensor must be calibrated for temperature. Different from other types of fiber optic sensors, the fiber Bragg grating sensor is a sensor for wavelength demodulation. The broadband light source emits a beam of light, which passes through the transmission fiber a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/32G01K15/00
CPCG01K11/3206G01K15/002G01K15/005
Inventor 方进刘延超贾冬雨
Owner BEIJING JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap