Method of measuring temperature of object to be measured, dust temperature and dust concentration

A technology for measuring objects and dust, applied in radiation pyrometry, measuring devices, optical radiation measurement, etc. Effect

Active Publication Date: 2018-07-31
MITSUBISHI UBE CEMENT CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the radiation thermometer has the following problems: when there is dust between the object to be heated as the measurement object and the observer, the attenuation of the radiated light caused by the dust and the influence of the radiated light from the dust itself make it impossible to accurately measure the temperature of the heated object. object temperature
The dichroic thermometer known as a non-contact thermometer is a thermometer that calculates the temperature from the ratio of the radiance luminance of two wavelengths, and the dichromatic thermometer can ignore radiant light caused by dust that does not change the radiance luminance ratio. The effect of attenuation, but the effect of radiant light from dust that changes the radiance luminance ratio cannot be ignored
[0004] Of course, the above-mentioned problems related to temperature measurement in a furnace with a high dust concentration can also occur in other firing furnaces other than cement firing furnaces.

Method used

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  • Method of measuring temperature of object to be measured, dust temperature and dust concentration
  • Method of measuring temperature of object to be measured, dust temperature and dust concentration
  • Method of measuring temperature of object to be measured, dust temperature and dust concentration

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no. 1 Embodiment approach ＞

[0047] First, the measurement method of the present invention will be described by taking the case where the number of the above-mentioned objects is one as an example.

[0048]

[0049] In the measurement method of the first embodiment, if figure 1 As shown, the temperature and the like of the object to be measured 50 present in the container 10 are measured using the first radiance meter 21 and the second radiance meter 22 installed outside the container 10 containing the object to be measured 50 . The first radiance luminance meter 21 measures radiance through a space in which dust exists, with the radiance meter facing the object 50 so that the object 50 exists on the optical axis. On the other hand, the second radiance luminance meter 22 faces the object 51 with the radiance luminance meter facing the object 51 in such a manner that an object 51 having a temperature different from that of the object 50 to be measured exists on the optical axis. Space to measure radianc...

no. 2 Embodiment approach ＞

[0111] Next, the measurement method of the present invention will be described by taking the case where the number of the above-mentioned objects is two as an example.

[0112]

[0113] In this second embodiment, if image 3 As shown, the number of objects 51 is set to 2, and as the second radiance meter 22, two second radiance meters 22a, 22b are used, and the above-mentioned 1st embodiment is similarly measured respectively. Radiance.

[0114] The first radiance luminance meter 21 is directed toward the object 50 so that the object 50 to be measured exists on the optical axis, and the radiance luminance is measured across a space where dust exists. On the other hand, as for the second radiance meters 22a and 22b, the second radiance meters 22 are respectively directed toward The above-mentioned objects 51a and 51b were respectively measured for radiation luminance through a space where dust exists. In addition, for the same reason as that described in the above-mentione...

Embodiment 1

[0159] Such as figure 2 As shown, the radiant luminance of the clinker 50 a present at the outlet-side end of the kiln shell 11 a is measured by the first radiance meter 21 , and the radiance of the object 51 is measured by the second radiance meter 22 . Furthermore, in this embodiment, the black body cavity located outside the outer periphery of the outlet of the kiln shell 11 a and provided on the inner wall of the kiln cover 12 is taken as the object 51 . In addition, the distance between the measurement position of the object 51 and the measurement position of the object to be measured (frit 50a) was 100 cm, and the distance between the first radiation thermometer 21 and the second radiation thermometer 22 was 30 cm. Here, the measurement position refers to the intersection point of the optical axis of the radiance meter and the object 51 or the object to be measured (frit 50a).

[0160] Here, let the measurement wavelength be the wavelength λ 1 =0.65μm, wavelength λ 2...

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Abstract

Provided is a method wherein a first radiance meter (21) is pointed toward an object to be measured and measures radiance with at least two wavelengths through a space in which dust exists and each ofa number of second radiance meters (22) equal to that of one or more objects (51) having a temperature differing from that of the object to be measured (50) is pointed toward the objects and measuresthe radiance with at least two wavelengths through the space, and the temperature of the object to be measured (50), the temperature of the dust and the concentration of the dust are measured from the radiance measured via the first radiance meter (21) and the second radiance meter (22).

Description

technical field [0001] The present invention relates to a method for measuring the temperature of an object to be measured in an atmosphere where dust exists, for example, an object to be heated in a high-temperature state in a furnace such as a rotary kiln equipped with cement manufacturing equipment in the presence of dust. Furthermore, this international application claims priority based on Japanese Patent Application No. 182656 (Japanese Patent Application No. 2015-182656) filed on September 16, 2015, and the entire content of Japanese Patent Application No. 2015-182656 is incorporated into this international application . Background technique [0002] Generally, in a continuous process furnace with a high dust concentration such as a rotary kiln in a cement manufacturing facility, the temperature of the object to be heated is measured using a radiation thermometer capable of measuring temperature in a non-contact manner. This radiation thermometer is also widely used i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/60F27B7/10F27B7/42G01J5/00G01J5/10
CPCF27B7/10F27B7/42F27D21/0014F27B7/20F27D2019/0003F27D2019/0006G01J5/0044G01J5/602G01J2005/066G01J5/0846G01J5/08021G01J5/80G01D21/02G01J5/10G01J5/60G01N15/0205G01J5/0018G01J2005/607G01J5/802
Inventor 岛裕和高田佳明
Owner MITSUBISHI UBE CEMENT CORP
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