KR20110091356A - Detector of stave for furnace and lookout system of stave using by it - Google Patents

Abstract

The blast furnace stave detecting device according to the present invention includes a plurality of temperature sensors installed to be wound on the outer circumferential surface of the coolant pipe of the stave installed inside the blast furnace, and the temperature of the coolant pipe of the stave measured by the temperature sensor. It is provided with a damage detection unit for determining the abnormality of the stave and the cooling water pipe based on the information.
The blast furnace stave detection device and the stave monitoring system according to the present invention detects the temperature of the coolant flowing in the coolant pipeline of each stave and the gas flowing into the coolant pipeline to determine whether there is an abnormality in the stave and the coolant pipeline. There is an advantage that can detect the presence of abnormality accurately.
In addition, since the temperature sensor is installed in the cooling water pipe of each stave, it is possible to sort out the stave in which the break occurred more accurately.

Description

Blast furnace detection device and stave monitoring system using the same {Detector of stave for furnace and lookout system of stave using by it}

The present invention relates to a blast furnace stave detection device and a stave monitoring system using the same, and to measure the temperature of the coolant flowing in the coolant pipeline and the gas flowing into the coolant pipeline to detect the abnormality of the stave and the coolant pipeline The present invention relates to an eve sensing device and a stave monitoring system using the same.

In general, in the operation of blast furnaces, iron ore and coke, which are raw materials, are charged in order to manufacture molten iron, and high temperature hot air is blown through a hot air outlet, and coke is combusted to induce a reduction melting reaction. The molten iron and slag are produced using this high temperature reduction melting reaction.

At this time, the inner wall of the blast furnace is damaged by embrittlement caused by corrosion and thermal stress caused by molten iron. In order to prevent such damage, it is most efficient to cool the inner wall of the blast furnace. One method for cooling the inner wall of the blast furnace is to cool the inner wall of the blast furnace by circulating water in the stave.

However, the friction and high temperatures of the charges caused by the continuous operation of the blast furnace will cause the stave to wear or crack. As the stave wears or cracks, coolant circulating in the stave flows into the blast furnace. The inflow of coolant into the blast furnace lowers the temperature of the blast furnace below the set temperature and causes fluctuations in fuel costs and instability of the furnace.

Therefore, there is a need for a stave sensing device that accurately determines whether there is an abnormality in the stave and the cooling water pipe of the stave.

The present invention has been made to improve the above problems, the blast furnace for detecting the presence of abnormality of the stave and the cooling water pipeline by detecting the temperature of the cooling water flowing in the cooling water pipe of each stave, the gas flowing into the cooling water pipe It is an object of the present invention to provide a stave sensing device and a stave monitoring system using the same.

The blast furnace stave detection apparatus according to the present invention for achieving the above object is a plurality of temperature sensing sensors installed to be wound around the outer circumferential surface of the cooling water pipe of the stave installed inside the blast furnace, and the temperature measured by the sensor A breakage detection unit is provided to determine whether there is an abnormality of the stave and the cooling water pipe based on temperature information along the longitudinal direction of the cooling water pipe of the stave.

On the other hand, the stave monitoring system according to the present invention is a plurality of temperature sensors installed to be wound around the outer circumferential surface of each cooling water pipe of the plurality of staves installed inside the blast furnace, and the measurement of the stave measured through the temperature sensor When the abnormality of the stave and the coolant pipe through the first stage detection unit and the failure detection unit provided with a damage detector for determining the abnormality of the stave and the coolant pipe on the basis of the temperature information of the cooling water pipe, A pump for controlling a cooling water pump for pumping the cooling water in the cooling water pipe to adjust the water pressure of the cooling water in the cooling water pipe lower than the pressure inside the blast furnace so that the gas inside the blast furnace through the abnormal occurrence portion of the cooling water pipe. A control unit and the gas introduced into the cooling water pipe to install the gas flowing into the cooling water pipe. Underground it is provided with second and stearyl eve sensing unit, wherein the first and second screening to screen the stacking eve an abnormality is generated on the basis of the information provided by stacking eve detection section parts additional gas generation detection provided.

The blast furnace stave detection device and the stave monitoring system according to the present invention detects the temperature of the coolant flowing in the coolant pipeline of each stave and the gas flowing into the coolant pipeline to determine whether there is an abnormality in the stave and the coolant pipeline. There is an advantage that can detect the presence of abnormality accurately.

In addition, since the temperature sensor is installed in the cooling water pipe of each stave, it is possible to sort out the stave in which the break occurred more accurately.

1 is a cross-sectional view of the blast furnace stave detection apparatus according to the present invention,
2 is a cross-sectional view of a stave monitoring system according to the present invention.

Hereinafter, the blast furnace stave sensing device 10 according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in more detail.

1 shows a blast furnace stave sensing device 10 according to the present invention.

Referring to the drawings, the blast furnace stave detection device 10 is a plurality of temperature sensor 20 installed on the outer circumferential surface of the cooling water pipe of the stave installed inside the blast furnace, and the temperature information measured through the temperature sensor 20 On the basis of this is provided with a failure detection unit 30 for determining the presence of abnormality of the stave and the cooling water pipe.

The temperature sensor 20 is a linear temperature sensor to easily measure the temperature information along the longitudinal direction of the cooling water pipe, and is preferably installed to be wound a plurality of times along the outer circumferential surface of the cooling water pipe.

The temperature sensor 20 is installed in each of the inlet side cooling water pipe into which the coolant flows into the stave and the outlet side cooling water pipe through which the coolant is discharged from the inside of the stave to discharge the coolant and the outside of the stave into the stave. Measure the temperature of the cooling water.

The failure detection unit 30 is connected to the temperature sensor, and determines whether there is an abnormality of the stave and the coolant pipe based on temperature information along the longitudinal direction of the coolant pipe measured through the temperature sensor.

Although not shown in the drawing, the damage detection unit 30 includes a database unit in which temperature information when the stave is normal is stored, and compares the temperature information stored in the database unit with temperature information measured during operation of the blast furnace. Determine if there is an abnormality in the cooling water pipe.

Meanwhile, FIG. 2 shows a stave detection system 100 according to the present invention.

Referring to the drawings, the stave detection system 100 is a first stage detection unit 200 for detecting the temperature of the coolant flowing into the coolant pipe of each stave, and the second to detect the gas flowing into the coolant pipe A stave detector 300 and a sorting unit 400 for selecting a stave in which an abnormality is generated based on information provided through the first and second stave detectors 300 is provided.

The first stave detector 200 includes a plurality of temperature sensors 210 installed to be wound on the outer circumferential surface of each cooling water pipe of the plurality of staves provided inside the blast furnace a plurality of times, and through the temperature sensors 20. The breakage detecting unit 220 determines whether there is an abnormality in the stave and the cooling water pipe based on the measured temperature information of the cooling water pipe of the stave.

The temperature sensor 210 is a linear temperature sensor that can easily measure the temperature information along the longitudinal direction of the cooling water pipe, and is preferably installed to be wound multiple times along the outer circumferential surface of the cooling water pipe.

The temperature sensor 210 is installed in each of the inlet side cooling water pipe into which the coolant flows into the stave and the outlet side cooling water pipe through which the coolant is discharged from the inside of the stave to discharge into the stave coolant and the outside of the stave. Measure the temperature of the cooling water.

The second stay detection unit 300 includes a pump control unit 310 for adjusting the pressure of the cooling water, and a gas detection unit 320 for measuring the gas introduced into the cooling water pipe.

When the pump control unit 310 detects an abnormality of the stave and the coolant pipeline through the first stave detector 200, the hydraulic pressure of the coolant may be introduced into the coolant pipeline so that the gas inside the blast furnace may flow through the abnormal occurrence portion of the coolant pipeline. Control the coolant pump to pump the coolant into the coolant pipeline so that the pressure is lower than the pressure inside the blast furnace.

In the stave monitoring system 100 according to the present invention configured as described above, since the temperature sensor is installed in the cooling water pipe of each stave, it is possible to more accurately sort the stave in which the damage has occurred.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

10: blast furnace stay detection device
20: temperature sensor
30: damage detection unit
100: stave surveillance system

Claims (2)

A plurality of temperature sensors installed to be wound on the outer circumferential surface of the cooling water pipe of the stave provided inside the blast furnace a plurality of times;
And a breakage detector configured to determine whether there is an abnormality between the stave and the coolant pipe based on temperature information of the coolant pipe of the stave measured by the temperature sensors.
The stave and the plurality of temperature sensing sensors installed so as to be wound on the outer circumferential surface of each cooling water pipe of the plurality of staves provided in the blast furnace, and the temperature information of the cooling water pipe of the stave measured by the temperature detection sensors and A first stave detector having a breakage detector configured to determine an abnormality of the cooling water pipe;
When the abnormality of the stave and the cooling water pipe is detected through the first stave detector, the pressure of the cooling water is introduced into the cooling water pipe so that the gas inside the blast furnace flows through the abnormal occurrence portion of the cooling water pipe. The second stage detection is provided with a pump control unit for controlling the cooling water pump for pumping the cooling water in the cooling water pipe to be adjusted to be lower than the pressure of the gas generator, and a gas generation detecting unit installed in the cooling water pipe to detect the gas introduced into the cooling water pipe Wealth;
And a sorting unit for selecting a stave in which an abnormality is generated based on the information provided through the first and second stave detectors.

Images