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High-temperature continuous measurement method and apparatus

A technology of measuring device and measuring method, which is applied in the direction of measuring device, radiation pyrometry, optical radiation measurement, etc., and can solve the problems of polluting the measuring optical path, failing to measure, and reducing the accuracy of temperature measurement, etc.

Inactive Publication Date: 2010-08-04
FOCUSED PHOTONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are also shortcomings. Some materials used in temperature measuring tubes will produce reactive gases or volatile substances in high temperature environments, such as temperature measuring tubes made of alumina, graphite, silicon and other materials. In high temperature environments, silicon and oxygen react to form carbon dioxide. Silicon, while carbon and silicon dioxide react chemically at high temperature to form silicon monoxide and silicon carbide volatiles; graphite materials will also develop, and binders such as resin or pitch are usually used in the process of sintering to manufacture temperature measuring tubes , and these substances are also volatile at high temperatures; these volatile substances or reaction gases slowly accumulate inside the single-layer tube, and the single-layer tube used cannot shield these volatile substances and reaction gases. The gas will pollute the measurement optical path, reduce the transmittance of the measurement light, or even block the measurement optical path, which will significantly reduce the temperature measurement accuracy and even cause the measurement to be impossible.

Method used

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  • High-temperature continuous measurement method and apparatus

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Such as figure 2 , Figure 4 As shown, a high-temperature continuous measurement device is used in continuous temperature measurement of molten steel 48 in a continuous casting tundish 47, and the measurement device includes a temperature measuring tube 30, a thermometer and a purging device. One end of the temperature measuring tube 30 is open and the other end is closed, made of Al 2 o 3 , C, Si and a binder, the binder usually uses a resin. The temperature measuring instrument is composed of a temperature measuring probe 43 and a signal analyzer 44 . The temperature-measuring tube 30 is connected to the temperature-measuring probe 43 with a tapered connector 42 .

[0035] The purging device includes a purging gas source 45 , a flow control device 46 and a dedicated pipe 20 . The purge gas source 45 is connected to the temperature measuring probe 43, and this connection method is in the prior art, and will not be described in detail here. The purging gas source...

Embodiment 2

[0042]A high-temperature continuous measuring device, which is used in the continuous temperature measurement of molten steel 48 in the continuous casting tundish 47, is different from the measuring device in embodiment 1, such as Figure 5 As shown, an exhaust hole is provided on the connecting piece 42 , and the purge gas source 45 communicates with the hole 31 through a flow control device 46 .

[0043] This embodiment also discloses a high temperature continuous measurement method, comprising the following steps:

[0044] Provide the above-mentioned temperature measuring tube 30 and special tube 20;

[0045] Connect the open end of the temperature measuring tube 30 with the thermometer; start the purge device, and the purge gas provided by the purge gas source 45 enters the temperature measuring tube 30 and the dedicated The gap 23 between the tubes 20, and flows toward the closed end of the temperature measuring tube 30, flows to the bottom of the temperature measuring t...

Embodiment 3

[0048] A high-temperature continuous measurement device, which is used in the continuous measurement of the temperature of molten steel in the continuous casting tundish, is different from the measurement device in Example 1: as Figure 6 , Figure 9 As shown, the special pipe 20 and the connecting piece 42 are installed on the connecting device 24, and the connecting device 24 is installed in the notch at the upper end of the temperature measuring tube 30, and several grooves 33 are provided as exhaust ports. The special tube 20 is no longer coaxial with the temperature measuring tube 30 , but has a certain deviation, but the light radiation emitted from the bottom of the temperature measuring tube 30 can pass through the inside of the special tube 20 . Argon in the inert gas was used as the purge gas in this embodiment.

[0049] This embodiment also discloses a high temperature continuous measurement method, comprising the following steps:

[0050] Provide the above-mentio...

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Abstract

The present invention discloses a high temperature continuous measurement method, which includes the steps that the present invention provides a temperature measurement tube, one end of which is enclosed, and the other end is opened; a special-purpose tube is arranged in the temperature measurement tube, and the two ends of the special-purpose tube are all opened; the opening end of the temperature measurement tube is connected with a temperature measurement apparatus; the sweeping gas provided by a sweeping gas source enters and flows towards the closed end of the temperature measurement tube, then flows towards the opening end of the temperature measurement tube, and gets discharged from the temperature measurement tube, the sweeping gas flows along the interior of the special-purpose tube into the closed end of the temperature measurement tube or flows out towards the opening end; the closed end of the temperature measurement tube is inserted into a measured high temperature environment, the temperature measurement tube senses the measured high temperature and emits out optical radiation; the sweeping gas sweeps the measurement optical path in the temperature measurement tube in the flowing process; the temperature measurement apparatus analyzes the optical radiation emitted out from the end of the temperature measurement tube inserted in the measured high temperature environment, thus obtaining the temperature in the measured high temperature environment. The present invention also discloses a high temperature continuous measurement device used for realizing the method.

Description

technical field [0001] The invention relates to temperature measurement, in particular to a high-temperature continuous measurement method and device. Background technique [0002] In the production process of metallurgy and glass, etc., realizing the measurement of the temperature of high-temperature gas, molten metal, glass, etc. is of great significance to adjust the production process, reduce energy consumption, and improve quality. [0003] Chinese patent CN2004200913647 discloses a temperature measuring device for measuring the temperature of high-temperature liquid, such as figure 1 As shown, a temperature measuring tube 11 and a peeping tube 10 are included. One end of the temperature measuring tube 11 is open and the other end is closed; the peeping tube 10 is installed on the connecting device 8 and inserted into the connecting hole 9 on the temperature measuring tube 11, both ends of which are open, and one end is connected to the temperature sensor connected. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/28G01J5/02
Inventor 王健张艳辉
Owner FOCUSED PHOTONICS