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Computer inspecting method for installing quality of thermocouple on cast wall

An off-line detection and thermocouple technology, applied in the direction of measuring heat, using electrical devices, measuring devices, etc., can solve problems such as poor installation, difficult constant control of heat source heat, uneven mold temperature, etc., to improve work efficiency and heat source Stable and controllable effect

Inactive Publication Date: 2007-11-28
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of these methods is that it is impossible to judge those thermocouples whose head part deviates from the required installation position due to oil pollution, solder joints, etc. This is because it is difficult to ensure that the mold is fully heated by the method of water vapor heating the mold as a whole. The overall temperature is uniform. It is difficult to judge whether the temperature difference detected by the thermocouple is caused by poor installation or uneven mold temperature.
For gas welding flame baking heating, because the heat of the heat source is difficult to control constantly, similar problems will also occur

Method used

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  • Computer inspecting method for installing quality of thermocouple on cast wall
  • Computer inspecting method for installing quality of thermocouple on cast wall
  • Computer inspecting method for installing quality of thermocouple on cast wall

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Embodiment 1

[0045] There was a steel leakage accident in the production of a steelmaking plant. According to the analysis, after the thermocouples were installed on the crystallizer, the installation quality of the thermocouples was not checked, so some thermocouples caused the forecasting system to input wrong temperature data. False alarms are generated, resulting in accidents. Therefore, it is determined to use the technology of the present invention to detect the installation quality of thermocouples, to ensure that the thermocouples can collect accurate temperature data, and to ensure the normal operation of the forecasting system. The specific steps are as follows:

[0046] Step 1: Understand the condition of the detected object

[0047] The average temperature of the cast steel is 1540°C. The molten steel is poured from the upper part of the mold mold, and the billet is pulled out from the lower part. The mold consists of two wide faces and two narrow faces, with a total of four m...

Embodiment 2

[0059] When a factory inspects the casting aluminum ingots, the temperature of the mold wall is inaccurate, and errors often occur. According to the analysis, after the thermocouple is installed on the mold, the method used to detect the installation quality of the thermocouple is to heat the mold wall with an arc welding flame to eliminate the broken couple, and process the temperature data during the casting process. The temperature field was predicted, and an error occurred. The analysis also believes that the method of arc welding flame heating only excludes broken couples, and some other thermocouples with unqualified installation quality are not excluded. It is these thermocouples that input wrong temperature data into the computer, which leads to the failure of temperature field prediction. Therefore, it is determined to use the technology of the present invention to detect the installation quality of the thermocouple, to ensure that the thermocouple collects accurate t...

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Abstract

A method for judging erection quality of thermocouple on mould wall with computer includes inserting thermocouple in mould wall, fixing, collecting temperature, local heating and quality judging. It is featured as working out 'control temperature zone' by setting couple head in 1-2 mm to erection hole bottom, cutting out top and bottom temperature control line from vertical axis of temperature rising and time setion of 4-15 miniute from horizontal axis, judging that thermocouple in the 'zone' is on specification in erection and otherwise not; using electric heater for heating and all the work is done by computer completely.

Description

technical field [0001] The invention relates to a judging technology for detecting the installation quality of a thermocouple with a dynamic temperature signal, which belongs to the field of temperature measurement. Background technique [0002] In the field of industrial production, such as continuous casting, in order to obtain the temperature information of the casting process, a plurality of thermocouple installation holes are processed on the outer wall of the mold in advance, and then the thermocouple is inserted into each hole and fastened in it. During the casting process, the temperature signal is collected at the same time, and the accident and quality are automatically monitored. If there is oil in the hole, the coupler wire is broken, or the device fastening the thermocouple in the hole fails, the temperature collected by the thermocouple will be inaccurate, false alarms will be generated, and the smooth progress of the production process will be seriously distur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K15/00G01K7/02G01K1/14
Inventor 姚曼赵江涛王旭东
Owner DALIAN UNIV OF TECH