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liquid temperature measurement system

A liquid and temperature measurement technology, used in measurement devices, optical radiation measurement, radiation pyrometry, etc., can solve the problems of poor corrosion resistance of protective tubes, poor measurement accuracy of thermocouples, slow response, etc., to achieve accurate measurement, fast and accurate. Measure, overcome the effects of slow response

Active Publication Date: 2016-08-17
CHINA ACAD OF AEROSPACE AERODYNAMICS
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Problems solved by technology

[0004] The purpose of the present invention is to provide a measuring instrument with on-line temperature measurement, which can effectively solve the disadvantages of poor corrosion resistance of protective tubes, poor measurement accuracy of thermocouples, slow response, etc., and has fast response for 1 second temperature measurement, accurate measurement, and long service life. Long and other advantages

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Embodiment Construction

[0017] For the design of this project, see figure 1 It is planned to adopt the fusion of contact temperature measurement and non-contact temperature measurement, and the optical channel protected by air film, to collect the spectral signal of the measured object to know the temperature.

[0018] The system includes a composite ceramic protection tube 4, a one-way stop valve 7, a gas source controller 9, an optical measurement system (6, 10, 11), a spectral thermometer 12, a data recorder 13, and a large-screen display 14. Functions of main components: Composite ceramic protection tube 4 has properties such as corrosion resistance and wall thickness, and is used to protect metal optical blackbody cylinder 6 and prolong service life; metal optical blackbody cylinder 6 is used for the spectrum channel and gas film purge channel of the measured object; The gas film controller 7 is used for gas film generation and control; the one-way stop valve 7 is used for the one-way control of...

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Abstract

The invention provides a liquid temperature measurement system, comprising an optical measurement system, an air source controller, a spectral thermodetector, a data recorder and a large-screen display, wherein the optical measurement system comprises a metal optical cylinder, a measurement window and an optical lens; one end of the metal optical cylinder is used for being inserted into liquid of which the temperature needs to be measured; the other end of the metal optical cylinder is contacted with the optical lens through the measurement window; the air source controller is air-tightly communicated with an air hole formed in the middle segment of the metal optical cylinder by a control valve and is used for blowing the gas in the metal optical cylinder; the rear part of the optical measurement system is connected with the spectral thermodetector, the data recorder and the large-screen display, and is used for recording and displaying the measured data. According to the liquid temperature measurement system, the advantages of high accuracy of contact temperature measurement and high response of non-contact temperature measurement are integrated, so that the defect of low response speed caused by a thick wall of a protective tube in an existing on-line temperature measuring system can be compensated; meanwhile, the liquid temperature measurement system has the characteristics of high accuracy and high response.

Description

technical field [0001] The invention relates to a liquid temperature measurement system, in particular to a liquid temperature measurement system capable of online temperature measurement of high-temperature or corrosive liquids. Background technique [0002] The spectral thermometer is based on the theory of black body radiation (Planck's law: the radiation flux E emitted by a black body per unit area in the direction of the hemisphere is a function of wavelength and black body temperature), and adopts a comprehensive temperature measurement method. It is composed of two parts: a detection tube and a spectral pyrometer, which can be used to measure the actual temperature inside various high-temperature furnaces and melts, and is not affected by environmental pollution and target blackness coefficient. [0003] Due to the high corrosiveness of some metal liquids to be tested, temperature measurement is basically carried out with 1, using K-type armored thermocouples for inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/00G01J5/02
Inventor 蔡捷伟
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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