Breakout warning method

A technology of breakout and alarm information, which is applied in the field of iron and steel metallurgical continuous casting, can solve problems such as late alarm, unsuitable for high casting speed production requirements, and long alarm judgment period of the breakout prediction system, so as to achieve the effect of improving sensitivity

Active Publication Date: 2018-06-01
BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a steel breakout early warning method, which solves the problem that the steel breakout prediction system in the prior art has a long alarm judgment period and late alarm, resulting in steel breakout accidents, which is

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Embodiment 1

[0028] An early warning method for steel breakout is provided in the embodiment of the present invention, please refer to figure 1 , the method is applicable to a large slab continuous casting machine, wherein the large slab continuous casting machine includes a crystallizer, and a first row of thermocouples and a second row of thermocouples are arranged on the copper plate of the crystallizer, wherein the first A row of thermocouples has a first distance from the upper mouth of the crystallizer; a second row of thermocouples has a second distance from the upper mouth of the crystallizer, wherein the first distance is smaller than the second distance, wherein the The methods described include:

[0029] Step 110: Determine whether the temperature rise of the first row of thermocouples exceeds the set alarm reference value for N1 consecutive times of temperature rise of the first row of thermocouples.

[0030] Step 120: When the temperature rise of the first row of thermocouple...

Embodiment 2

[0061] Based on the same inventive concept as that of a steel breakout early warning method in the foregoing embodiments, the present invention also provides a steel breakout early warning device, such as figure 2 shown, including:

[0062] Data acquisition communication module 4, described data acquisition communication module 4 completes the data uploading and downloading of data storage module and basic automatic control system 1 through Ethernet;

[0063] Data storage module 5, described data storage module 5 comprises system database 8 and real-time database 9; Wherein, described system database 8 stores thermocouple equipment parameter, drawing speed setting parameter, collection frequency setting parameter, steel type definition, steel Corresponding vertical propagation breakout prediction parameters, steel type corresponding horizontal propagation breakout prediction parameters; the real-time database 9 stores the temperature of the first row of thermocouples and the ...

Embodiment 3

[0070] image 3 It is a kind of steel breakout early warning method in the embodiment of the present invention, and described method comprises:

[0071]A domestic steel mill provided a double-strand high-efficiency large slab continuous casting machine. The length of the mold is 900mm. Six rows of thermocouples are embedded in the copper plate of the mold. There are 108 thermocouples installed in 6 rows and 9 columns on the wide surface of the outer arc and inner arc respectively. For thermocouples, 24 thermocouples in 6 rows and 2 columns are installed on the left and right narrow sides, 132 thermocouples in total. The thermocouple row spacing is 111mm and the column spacing is 185mm. The installation position of the first row of thermocouples on the copper plate is 172.5mm away from the copper plate opening of the crystallizer, and about 72.5mm away from the meniscus during normal production.

[0072] The set logical judgment counting values ​​are as follows: N1=3, N2=1, N...

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Abstract

The invention provides a breakout warning method applicable to large slab continuous casters. The breakout warning method comprises: judging whether the rise amplitude of a first row of thermocouplesexceeds a set warning reference value of temperature rise for the first row of thermocouples continuously N1 times, and judging whether rise slope of the first row of thermocouples exceeds a set warning reference value of temperature rise slope for the first row of thermocouples continuously N3 times; if the rise slope of the first row of thermocouples exceeds the set warning reference value of temperature rise slope for the first row of thermocouples continuously N3 times, acquiring light breakout warning information, wherein both N1 and N3 are positive integers. The technical problem is solved that since a breakout warning system of the prior art has long warning judging cycle and provides delayed warnings, breakout accidents still occur and the production requirement for high drawing speed is not met.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy continuous casting, in particular to an early warning method for steel breakout. Background technique [0002] Since the rise of high-speed continuous casting technology in Japan in the 1970s, high-efficiency continuous casting technology has become an important direction for the development of modern continuous casting production. Among them, high casting speed is the main technology, and with the increase of casting speed, the shell thickness at the exit of the crystallizer becomes thinner, which easily leads to breakout accidents. [0003] However, in the process of implementing the technical solutions in the embodiments of the present application, the inventors of the present application found that the above-mentioned prior art has at least the following technical problems: [0004] The steel breakout forecasting system in the prior art has a long alarm judgment cycle, and t...

Claims

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Application Information

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IPC IPC(8): B22D11/14B22D11/16
CPCB22D11/148B22D11/16
Inventor 孙丹钱宏智廖慧闫小柏杨伟强邱成国
Owner BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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