Optical sensing detection device and method for fluid medium interface

An optical fiber sensing and fluid medium technology, applied in the field of instrumentation and optical fiber sensing, can solve the problems of the measured medium being easily corroded by salt water crystallization, unable to meet the long-term reliable operation, pollution, etc., to achieve high reliability and reduce system costs , the effect of broad application prospects

Inactive Publication Date: 2012-08-29
DALIAN UNIV OF TECH
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the brine in the salt chamber is very corrosive to general optical materials and metal materials, the optical method of measuring the refractive index or spectrum and the electrical method of measuring the ...

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
  • Optical sensing detection device and method for fluid medium interface
  • Optical sensing detection device and method for fluid medium interface
  • Optical sensing detection device and method for fluid medium interface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Specific embodiments of the present invention will be described in detail below in conjunction with technical solutions and accompanying drawings.

[0020] Under the control of the computer 1, the adjustable constant current power supply 3 provides heating current for the electric heating device 10 in the sensing basic unit 8 through the heating current transmission wire 5 in the stainless steel tube hard armor photoelectric composite cable 6 in the form of square wave output, and at the same time the optical fiber The sensor demodulator 2 continuously transmits the optical signal of wavelength scanning to the temperature measuring optical fiber 4, and receives the spectral signal reflected by the fiber Bragg grating temperature sensor 11 in the sensing basic unit 8, and calculates each The temperature value of the fiber Bragg grating temperature sensor 11. Since each fiber Bragg grating temperature sensor 11 has its own wavelength channel, by using wavelength division ...

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

PropertyMeasurementUnit
Outer diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Login to view more

Abstract

An optical sensing detection device and method for fluid medium interface belong to the field of optical fiber sensing technology. The device comprises a medium interface sensor, a ground survey instrument and an armored optic/electric composite cable, and is characterized in that the medium interface sensor comprises sensing basic units which are serially connected, wherein each sensing basic unit comprises an electric heater and an optical fiber temperature measuring device which are encapsulated integrally; 1 to 2 metal wires and 1 optical fiber are included in the optic/electric composite cable; the ground survey instrument comprises an optical fiber sensing demodulation instrument, a constant-current power supply and a computer, the constant-current power supply provides heating current to the electric heater in a square wave form, meanwhile the optical fiber sensing demodulation instrument is used for reading the temperature value of the optical fiber temperature measuring device continuously, and the medium species and interface positions at the periphery of an electrical heating body are identified according to differences of characteristic parameters of temperature-time curves in different media. The optical sensing detection device has the effects and benefits of high reliability, corrosion and pollution resistance, zero maintenance and long service life, and is particularly suitable for detecting oil-water surface of in underground salt cavern made cavity.

Description

technical field [0001] The invention belongs to the technical field of instrumentation and optical fiber sensing, and relates to an optical fiber sensing device and method for fluid medium interface based on optical fiber multi-point temperature measurement, in particular to the detection of oil-water interface in underground salt cavern cavity construction and other underground oil and gas Detection of oil-water and gas-liquid interfaces in wells. Background technique [0002] The underground storage of oil and natural gas is one of the important ways to ensure the current and future national energy security. Underground salt cavern storage is a new energy storage technology developed in recent years. Underground salt caverns are usually a kind of storage space with a specific shape formed by manual control. In the process of salt cavern construction, it is necessary to control the shape of the roof of the cavern by adjusting the height of the interface between diesel oil ...

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
IPC IPC(8): G01N25/20
Inventor 于清旭周新磊彭伟
Owner DALIAN UNIV OF TECH
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