KR200417055Y1 - Monitoring device for the wind hole of a blast furance - Google Patents

Abstract

The present invention relates to a furnace tuyere monitoring device, the housing is fixed to one end connected to the end of the tuyere of the furnace; An optical unit positioned inside the housing and for splitting light emitted from the air vents; An optical unit support for supporting the optical unit in the housing; A light transmission window disposed in line with the connection part so that a part of the branched light is transmitted; Imaging means mounted in the housing to photograph the remainder of the branched light; And a clamp mounted adjacent to the connection part and including a clamp fixing the tuyere and the housing. According to the present invention, since the combustion state inside the tuyere can be observed simultaneously with the naked eye and the imaging device, not only can the accuracy of observation be increased, but also the tuyere observation window can be connected to the housing using a clamp attached to the housing. Not only is this easy, it is also possible to easily adjust the optical axis change occurring when the housing is detached or attached, and a cooling device for protecting the imaging device from the furnace can be used conveniently and stably.

Furnace, blowhole, monitoring device, half mirror, clamp.

Description

Monitoring device for the wind hole of a blast furance}

1 is a front view schematically showing a conventional furnace melting hole monitoring apparatus.

2 is a perspective view schematically showing an example of the furnace wind tunnel monitoring apparatus according to the present invention.

3 is a cutaway view schematically showing the embodiment shown in FIG. 2.

4 is a cross-sectional view illustrating a connection relationship between a housing and an optical unit support in the embodiment illustrated in FIG. 2.

<Explanation of symbols for main parts of the drawings>

100: housing, 102: connection portion,

104: flange, 106: clamp,

110: cover, 118: imaging device,

120: light transmitting portion, 122: color filter,

124: floodlight, 130: half mirror,

132: UV filter, 134: optical unit support,

136: up and down adjustment pinhole, 138: left and right adjustment pinhole,

142: photosensitive filter 150: boss,

152: slide pin, 164: lamp.

The present invention relates to a furnace vent monitoring device, and more particularly, to a monitoring apparatus for observing the combustion state inside the furnace by mounting in the furnace vent.

In general, blast furnace operation is to produce molten iron by supplying hot air through a tuyere as a heat source for melt reduction after charging the fuel and raw materials weighed in the raw material process in the blast furnace. Referring to FIG. 1, in the operation process, air blower units 20 (34 are installed in the circumferential direction in the case of a large blast furnace) are installed at the lower side of the furnace, and the blower pipe 21 of the air blower unit 20 is installed. Hot air is uniformly supplied to the inside of the furnace through the. However, if the combustion condition of the pulverized coal is deteriorated due to various reasons, the pulverized coal may accumulate in the furnace, and the ventilation of the tufts may be deteriorated, and in the worst case, the pulverized coal may block the tufts. 22), the pulverized coal combustion state and the falling light of the furnace are monitored and the worker judges whether there is any abnormality.

In other words, the furnace operator can observe the combustion state of iron ore at the tip of the tuyere, that is, the brightness, to predict the high and low heat, and to check whether the attachment of the furnace wall blocks the tip of the tuyeres that supply wind. In addition, it is possible to check the cooling water leakage state of the tuyere. In addition, the operator can check the pulverized coal combustion state and the falling light state through the observation window and monitor the combustion situation inside the furnace.

However, as described above, the furnace operator may be poisoned by residual gas around the tuyeres, that is, gases produced while producing molten iron in the furnace in the process of directly inspecting the situation inside the furnace. You may be exposed to safety accidents. In addition, there is a problem that the efficient management and optimal operation of the facility is difficult due to the difference in the judgment criteria of the operator.

In order to solve the above problems, a number of published patent publications, such as Korean 2001-0063896, install an annular rail in the upper circumferential direction of the blast furnace, and move the camera to the front end of the bulge to periodically monitor through the observation window. The method of checking the inside of the blast furnace using the optical sensor and optical sensor is described above.However, this method has a general purpose, continuity, reliability, and precise adjustment according to the field application of new technology. There have been many problems.

However, it is difficult to accurately stop the position of the camera on the front end observation window of the tuyere, and after maintaining the tuyere, it is difficult to acquire the internal image of the tuyere in a certain direction and size due to the slight change of the angle of the observation window or the shaking of the camera. There was a very difficult point, and there was a problem in reliability by using a photoelectric sensor or an acoustic wave measuring sensor. Therefore, the operator has to monitor the screen all the time, and also has the disadvantage that the observation of the observation target and the visual observation at the same time with the naked eye at the field.

The present invention has been devised to overcome the disadvantages of the prior art as described above, not only can be easily mounted on the vent of the furnace, but also by the naked eye and the camera at the same time to check the combustion state in the furnace furnace Providing is a technical challenge.

The present invention also makes it a technical problem to provide a furnace flue opening monitoring device that can improve the durability by protecting the device from the high temperature transmitted from the tuyere.

In addition, the present invention makes it easy to adjust the angle of the optical unit mounted inside the device, it is a technical problem to provide a furnace vent opening device for easy maintenance and repair.

The present invention in order to achieve the above technical problem, the housing is fixed to one end connected to the end of the tuyere of the furnace; An optical unit positioned inside the housing and for splitting light emitted from the air vents; An optical unit support for supporting the optical unit in the housing; A light transmission window disposed in line with the connection part so that a part of the branched light is transmitted; Imaging means mounted in the housing to photograph the remainder of the branched light; A cooling apparatus for protecting an imaging device from the high temperature transmitted from the tuyere, and is provided adjacent to the connecting portion, and provides a furnace tuyere monitoring apparatus comprising a clamp for fixing the housing to the tuyere observation window.

More preferably, a color filter is mounted on the light transmission window, and a photosensitive filter is mounted on the front end of the imaging device.

In addition, a cooling element and a heat sink may be attached to the outside of the imaging means.

The optical unit may use a half mirror.

Preferably, the optical unit support is installed to be movable in the housing, and the outer side of the housing is preferably formed with a pin hole in communication with the optical unit support.

In addition, it is preferable that a lamp for instructing a power supply state to the imaging means is mounted to the housing.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the furnace wind tunnel monitoring apparatus according to the present invention.

Referring to Figure 2, an embodiment of the tuyere monitoring apparatus according to the present invention is shown. The housing 100 of the embodiment has a shape similar to that of a camcorder as a whole, and is made of a material such as aluminum for weight reduction. An optical unit, which will be described later, is embedded inside the cylindrical portion located above the housing 100, and an imaging device is embedded inside the rectangular parallelepiped portion located below.

At one end of the cylindrical portion of the housing 100, a connecting portion 102 is coupled to the housing 100 by a clamp 106, the flange 104 is formed on the outside of the connecting portion 102, the flange ( The clamp 106 is caught at the end of the 104 to be fixed. Meanwhile, as shown in FIG. 3, the connection part 102 has a screw thread formed therein so as to be screwed to the tuyere observation window 22. Therefore, the connection part 102 is first fixed by screwing the tuyere observation window 22, and then the housing 100 is coupled through the clamp 106.

A cover 110 for protecting an imaging device embedded therein is mounted under the housing 100. The cover 110 has a hollow box shape and is formed to surround the outer side of the lower portion of the housing 100, and is detachably inserted into the lower outer side of the housing 100 as it slides. In addition, the bottom of the cover 110 has an extension portion 112 so that the central portion can be opened. In addition, the side of the cover 110 is formed with a plurality of slit grooves 111 communicated with the outside so that the gas such as air injected into the housing 100 for cooling can be discharged to the outside.

The lower plate 114 of the housing 100 is coupled to the extension part 112 of the cover, and a pair of supports 116 for fixing the imaging device between the lower plate 114 and the cylindrical part. ) Is located, the support 116 also functions as a heat sink for radiating heat transferred to the imaging device.

Here, a method of cooling the image capturing apparatus by inserting the thermoelectric element 117 between the image capturing apparatus and the heat sink is also applicable.

At the end of the housing 100, which is opposed to the cylindrical connecting portion 102, a light transmitting part 120 capable of visually checking the inside of the tuyere is mounted, and a color filter 122 is provided inside the light transmitting part 120. ) And floodlight 124 is mounted. The coloring filter 122 serves to easily observe when the naked eye is exposed to the strong light.

A half mirror 130 as an optical unit is inclined 45 degrees between the connecting portion 102 and the light transmitting portion 120. The half mirror 130 serves to branch the light radiated from the tuyere and transmit the light to the light projector 120 and the imaging device 118, respectively. Here, the half mirror 130 is not directly mounted to the housing 100, but is fixedly installed in the cylindrical optical unit support 134, and the optical unit support 134 is spaced apart from an inner wall of the housing 100. It is positioned so that it can move with a predetermined play. This will be described later with reference to FIG. 4.

The front surface of the optical unit support 134 is equipped with a UV filter 132 to block harmful light transmitted from the air vents. A light transmission port 140 communicating between the half mirror 130 and the imaging device 118 is formed inside the housing 100, and is transmitted to the image pickup means at one side of the light transmission hole 140. In order to reduce the amount of light, the photosensitive filter 142 is mounted to smooth the image of the imaging device 118.

One side of the housing 100 is equipped with an air injection nozzle 160 for cooling the inside of the housing 100, the air injection nozzle 160 and the air inlet 162 attached to one side of the housing 100 and Connected. In addition, a lamp 164 is installed on the lower plate 114 of the housing 100 so as to turn on when power is supplied to the imaging device 118 so as to know a power supply situation.

Referring to FIG. 4, the connection relationship between the optical unit support 134 and the housing 100 will be described. 4 is a diagram illustrating two cross-sections overlapping each other in order to facilitate understanding, and a pair of left and right adjustment pinholes 138 and one vertical adjustment pinhole 136 are formed outside the housing 100. . Each of the pinholes 136 and 138 penetrates through the housing 100 to the outer surface of the optical unit support 134, and a thread is formed therein. Therefore, the adjustment screw is inserted into the pinholes 136 and 138 so that the end of the screw contacts the outer surface of the optical unit support 134, and then checks the bias of the image that is actually transmitted. It is to be able to adjust the angle of the half mirror 100 by moving forward and retracting the screw on the other side.

On the other hand, in the adjustment of the vertical direction, the boss 150 is formed in the lower portion of the optical unit support 134, the slide pin 152 through the elastic spring inside the boss 150, the optical unit support. It is configured to be in contact with the bottom of the 134, so that the elastic force that pushes the optical unit support 134 upward. Therefore, it is possible to adjust the position of the up and down direction by using one screw inserted into the vertical adjustment pinhole 136. In other words, when the screw is advanced, the optical unit support 134 moves downward to overcome the elastic force of the elastic spring. When the screw is retracted, the optical unit support 134 is moved upward by the elastic force of the elastic spring. . Of course, the embodiment of applying the boss and the slide pin in the pinhole for adjusting the left and right can also be considered.

According to the present invention having the above-described configuration, the combustion state inside the tuyere can be observed simultaneously with the naked eye and the imaging device, so that the accuracy of the observation can be increased, and the heat shield filter is installed to more effectively prevent the device from heat. It can protect and can provide a softer image by reducing the light transmitted to the image pickup device.

In addition, the clamp can be used to connect the observation hole to the housing, so it is easy to mount, and the change of the optical axis that occurs when the housing is removed or attached can be easily adjusted, and a cooling device to protect the imaging device from the furnace. It can be used conveniently and stably.

In addition, by including a separate cover to protect the imaging device to be able to adjust or repair the imaging device without removing the housing, it is possible to provide an effect of greatly improving the ease of use.

Claims (7)

A housing having one end fixed to a connection portion mounted at an end portion of the tuyere observation window of the furnace; An optical unit positioned inside the housing and for splitting light emitted from the air vents; An optical unit support for supporting the optical unit in the housing; A light transmission window disposed in line with the connection part so that a part of the branched light is transmitted; Imaging means mounted in the housing to photograph the remainder of the branched light; And Furnace windshield monitoring apparatus is mounted adjacent to the flange of the connection portion, the clamp for fixing the tuyere and the housing. The method of claim 1, Furnace windshield monitoring apparatus characterized in that the heat sink is attached to the outside of the housing imaging device. The method of claim 2, Furnace windshield monitoring apparatus characterized in that the heat sink further comprises a thermoelectric element. The method of claim 1, Furnace windshield monitoring apparatus characterized in that the photosensitive filter for reducing the amount of light transmitted to the imaging means is mounted. The method of claim 1, And the optical unit is a half mirror. The method of claim 1, And the optical unit support is installed to be movable within the housing, and a pinhole communicating with the optical unit support is formed outside the housing. The method of claim 1, And a lamp for displaying a power supply state to the imaging device in the housing.

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