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Contacting/non-contacting molten metal high temperature measuring apparatus and measuring method

A molten metal and measuring device technology, applied in measuring devices, radiation pyrometry, measuring heat, etc., can solve the problems of difficult automation, inability to measure temperature continuously or at high frequency, and high cost of temperature measurement, and achieve high measurement accuracy and realize Effect of automation and cost reduction

Inactive Publication Date: 2009-06-03
武钢集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are the following problems in the use of consumption-type fast thermocouples for temperature measurement: 1) The temperature measurement probe is disposable, and the temperature measurement cost is high; 2) The probe must be replaced after each measurement, which is difficult to automate; 3) Continuous or high-frequency measurement cannot be performed. temperature, it is impossible to know the trend of temperature change
However, the high-temperature radiation thermometer can only measure the surface temperature of the molten metal, but cannot measure the real internal temperature. In addition, the emissivity of the measured object must be known, which is not practical.

Method used

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  • Contacting/non-contacting molten metal high temperature measuring apparatus and measuring method
  • Contacting/non-contacting molten metal high temperature measuring apparatus and measuring method
  • Contacting/non-contacting molten metal high temperature measuring apparatus and measuring method

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Embodiment Construction

[0028] In practice, the present invention can be realized according to the following technical requirements.

[0029] Technical conditions of consumable fast thermocouple:

[0030]

[0031] The fast thermocouple is inserted into the molten steel to measure once every 5 minutes, and the measurement result is X 1 (t) See Table 1 and Table 2.

[0032] Specifications for radiation pyrometers:

[0033] name model Resolution error Operating temperature measure time radiation pyrometer TP90-1M ±1℃ ±0.5％ (1500-1700)℃ <1mS

[0034] The radiation pyrometer continuously measures the temperature of molten steel to obtain the trend curve of temperature change X 2 (t), the measurement results are shown in Table 1 and Table 2.

[0035] A / D converter: A / D converter is divided into 2 channels for X 1 (t) and X 2 (t) After the analog / digital conversion, input the AT89C52 microcontroller.

[0036] AT89C52 single-chip microcomputer: AT89C52 single-c...

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Abstract

This invention relates to a high temperature measuring method of contact / non- contact molten metal. Specifically the invention is a measuring device and measuring means, which aim at temperature of iron and molten steel, to use discrete temperature signal X1 (T) of asynchronism expending electro heat to continual modify continually varying temperature signal x2 ( T) of high temperature radiation thermometer. The invention includes expend type fast thermocouple, high temperature radiation thermometer, A / D data converter, single chip and output equipment. The described expend type fast thermocouple and high temperature radiation thermometer respectively connect with A / D data converter's input end; A / D data converter's output port connect with single chip; single chip respectively connect with keyboards, display unit and printer.

Description

technical field [0001] The invention relates to the technical field of high-temperature measurement of molten metals, in particular to a temperature signal X2(t) continuously changed by a high-temperature radiation thermometer using discrete temperature signals X1(t) of consumption thermocouples at different times for the temperature of molten iron and molten steel ) for continuous correction of measuring devices and measuring methods. Background technique [0002] The measurement of relevant molten metal (melt iron, molten steel temperature) before the present invention proposes has following several modes: A, extensively adopt consumption type fast thermocouple in the world, its measurement accuracy is high. However, there are the following problems in the use of consumption-type fast thermocouples for temperature measurement: 1) The temperature measurement probe is disposable, and the temperature measurement cost is high; 2) The probe must be replaced after each measureme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/00G01K7/02
Inventor 李午
Owner 武钢集团有限公司
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