KR20000012278U - Vacuum Tank Inner Remover - Google Patents

Abstract

The present invention relates to a vacuum chamber inner wall removing device that can easily remove the now grown and attached to the inside of the vacuum chamber as oxygen injected in the vortex form.

The present invention, in the vacuum tank consisting of the upper tank 110, the lower tank 120 and the immersion tube 130 eroded in the molten steel (8) of the ladle 140, the oxygen on the inner surface of the upper tank 110 A plurality of air perforations 11 formed on the body and the air sharing passages 12 formed in the body so as to eject the front and fixed by arranging in a row from the top to the bottom, and a plurality of connectors 30 which communicate with the rear end of the air sharing passages 12 are mounted. And an oxygen pipe 40 for supplying oxygen, and the flexible hose 50 connected to the oxygen pipe 40 is provided with a flow control valve 60, a pressure control valve 70, and an oxygen shutoff valve 80. The present invention provides a vacuum chamber inner removing device.

The present invention builds the internal smoke that forms the inner wall of the upper tank together with the pore smoke that oxygen is blown in, so that it is not attached to the inside of the vacuum tank to prevent growth. And to prevent partial erosion to provide a vacuum chamber inner now removal device that can prevent large equipment accidents.

Description

Vacuum Tank Inner Remover

The present invention relates to a vacuum chamber inner wall removing device that can easily remove the now grown and attached to the inside of the vacuum chamber as oxygen injected in the vortex form.

In general, the vacuum tank 100 provided in the steelmaking facilities of the steel mill is, as shown in Figure 4, the upper pipe 110, the lower tank 120 and the deposition pipe deposited on the molten steel (8) of the ladle 140 ( 130, the ladle 140 is raised and lowered by the ladle lifting device (9).

As the now 4 is attached to and grows on the inner surface of the upper bath 110 of the vacuum chamber 100, when the now 4 becomes large in size, the worker is formed on the upper surface of the upper bath 120. The oxygen pipe 2 was melted and removed by inserting an oxygen pipe 2 to which oxygen was supplied through the now-removal hole 6 and supplying oxygen to the now 4 side.

However, such a conventional removal operation takes a lot of time, there is a risk of falling of the worker climbed on the vacuum chamber 100 located in the height, as the removal operation is elapsed as shown in Figure 4 The inner wall of the upper tank 110 composed of the inner edge 111, the permanent field 112, the heat insulating material 13, and the outer shell 114 is eroded, and a groove is dug to seal the airtight between the inner edge 11 Could not hold a hole in the outer surface of the upper tank 110 of the vacuum chamber (100).

At this time, the molten steel (8) through the hole formed at the time of removal now causes an accident that leaks to the outside, the risk of a safety accident is very high, reducing the number of times of use of the vacuum tank 100, as well as reducing the work productivity, The exchange cycle of the vacuum chamber 100 is faster, there is a problem that increases the manufacturing cost.

Accordingly, the present invention is to solve such a conventional problem, the object of which is to build a pore follicle in which oxygen is blown together with the internal follicle constituting the inner wall of the upper vessel so that it is now attached to the inside of the vacuum vessel to prevent growth. The present invention aims to provide a vacuum chamber internal removal device that can prevent premature wear of the vacuum chamber, increase the replacement cycle, improve work productivity, and prevent partial erosion to prevent large-scale equipment accidents.

1 is a detailed view showing a vacuum chamber inner now removing device according to the present invention,

Figure 2 is an installation state showing a vacuum chamber inner now removing device according to the present invention,

3 is a plan sectional view showing a vacuum chamber inner now removing apparatus according to the present invention,

Figure 4 is a conventional working state to remove the now attached to the inside of the general vacuum chamber,

5 is a longitudinal cross-sectional view showing the structure of the edge of a typical vacuum chamber.

Explanation of symbols on the main parts of the drawings

4 ......... now 8 ......... molten metal

11 ....... Gigi and 12 ........

12a ... pore 30 ........ End Connection

40 ....... Oxygen Pipe 50 ........ Flexible Hose

60 ....... Flow control valve 70 ........ Pressure control valve

80 ....... Oxygen barrier side 100 ....... Vacuum tank

110 ....... upper jaw 120 ....... lower jaw

The present invention as a technical configuration for achieving the above object,

In the vacuum tank consisting of a submerged tube eroded in the molten steel of the upper tank, the lower tank and ladle,

Arrange and fix a plurality of air perforations formed in the body of the upper tank in order to inject oxygen forward to the inner surface of the upper tank from the top to the bottom, and install a plurality of connectors connected to the rear end of the air sharing furnace to supply oxygen. By providing an oxygen pipe 40, the flexible hose connected to the oxygen pipe is provided with a vacuum chamber inner now removing device, characterized in that it comprises a flow control valve, a pressure control valve and an oxygen blocking valve.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a detailed view showing a vacuum chamber inner now removing device according to the present invention, Figure 2 is a state diagram showing the vacuum chamber inner now removing device according to the present invention, Figure 3 is a vacuum chamber inside according to the present invention It is a plan sectional view showing the removal device now.

Vacuum chamber inner now removing device 1 according to the present invention, as shown in Figures 1 to 3, is now easily attached to the inner surface of the upper tank constituting the vacuum chamber 100 without damaging the inner edge 111 As it can be removed, the device 1 is composed of a pore edge 11 is fixed shaft and the same as the inner edge 111 and the oxygen pipe 40 for supplying oxygen to the pore edge 10 side.

As shown in Figure 1, the pore edge 11 is lower from the top to the left and right on both sides of the inner surface of the upper jaw 110 is mainly attached to the now (4) like the inner edge 111 is built inside the outer shell It is arranged in a plurality in a row, the body of the pore and the 11 is formed in a whirlwind shape in which the injection angle of the porous air-sharing passage 12 gradually increases toward the tip so as to inject the oxygen supplied from the rear end forward in a whirlwind manner. The air sharing path 12 is composed of a plurality of pores (12a).

In addition, the front surface of the pores 11 and the molten now is not attached, is provided with a concave cross-sectional shape inwardly to fall to the bottom, the air sharing passage 12 exposed to the front of the pores 11 and now It is preferable to form a part protruding to the tip to prevent clogging by.

In addition, each hole perforated in the outer surface of the outer shell 114 at the rear end of the air sharing passage 12 of each of the pores and the fixed joints 11 and the inner edge 111 to form the inner surface of the upper jaw (110). The connector 30 inserted through the 20 is screwed to communicate, and the hole 20 into which the plurality of connectors 30 are inserted is welded to seal the gap with the connector 30 so that airtightness is maintained.

In addition, the oxygen pipe 40 is a hollow pipe-type pipe member in which a plurality of the connecting holes 30 for supplying oxygen to each of the pores and the air 11 formed on the left and right sides of the inner surface of the upper tank 110 is formed, The inlet side has a flow control valve 60 for adjusting the flow rate of the oxygen supplied through the oxygen supply line, a pressure control valve 70 for adjusting the pressure of the supplied oxygen and the oxygen blocking side 80 for opening and closing the flow of oxygen Equipped with a flexible hose (50) having a.

Referring to the operation and effects of the vacuum chamber inner now removing device according to the present invention having the configuration as described above are as follows.

In the case where the molten steel is attached to the inner surface of the upper tank 110, in particular, the inner side of the vacuum tank 100, the oxygen blocking side 80 of the flexible hose 50 connected to the oxygen supply line is opened. The proper pressure is adjusted by the pressure regulating valve 70, and is blown into the oxygen pipe 40 at a flow rate determined by the flow regulating valve 60.

Subsequently, the oxygen supplied into the oxygen pipe 40 communicates with the rear end of the air sharing passage 12 of the pore smoke 11 through the holes 20 formed in the outer shell 114 of the upper tank 110. ) Is blown to the pore edge 12 side. The oxygen injected forward through the air sharing passage 12 of the pore smoke 11 is melted as the oxygen (4) attached to the front surface of the pore smoke 11 as the oxygen, and now melted from the top to the bottom To be removed away. This now removing operation takes place at the same time in the pores and the stationary fixed 11 respectively on the left and right sides of the inner surface of the upper tank (110).

At this time, since the front surface of the pores and the 11 is provided in a concave shape inward, the molten now is not directly in contact with the discharge port of the air sharing passage 12 exposed to the front can be prevented, the air sharing passage ( 12) since the plurality of pores 12a are formed in a whirlwind form in the inner body of the pore smoke 11, oxygen injected into the air sharing passage 12 is injected forward while forming a vortex-type oxygen flow. It can shorten the working time of melting and removing the dust attached to the inner surface.

In addition, since the molten iron 4 is melted by the oxygen injected from the air-sharing passage 12 of the pore smoke 11, there is no place to support the inner surface of the upper tank 110. Dropped to the bottom and dissolved in molten steel. When all of these removal operations are completed now, the oxygen shutoff side 80 is closed to stop the oxygen supply.

According to the present invention as described above, by injecting oxygen to the air-sharing passage 12 side of the air-pore and 11 to be built on the left and right sides of the inner surface of the upper tank 110 of the vacuum tank 110, by spraying in the form of vortex, Since it can be easily and quickly removed by melting the old now (4), it is possible to prevent the safety accident falling from the height of the worker and the leakage of molten steel through the hole as in the prior art, and to prevent the erosion with the bottom edge, so that the vacuum tank ( Practical effect can be obtained by increasing the number of times of use).

Claims (2)

In the vacuum tank consisting of the upper tank 110, the lower tank 120 and the immersion tube 130 eroded in the molten steel (8) of the ladle 140, The air sharing passage 12 formed in the body to the air to the front of the upper tank 110, the plurality of air permeation 11 formed in a row arranged in a row from the top to the fixed shaft, the air sharing passage 12 Equipped with a plurality of connectors 30 in communication with the rear end is provided with an oxygen pipe 40 for supplying oxygen, the flexible hose 50 is connected to the oxygen pipe 40 flow control valve 60, pressure control valve A vacuum chamber inner now removing device, characterized in that it comprises a 70 and the oxygen blocking side (80). The method of claim 1, wherein the pore edge 11 is formed in a whirlwind shape in which the spray angle is gradually increased toward the tip of the plurality of pores 12a, the front side is not attached to the molten now, so as to fall to the bottom A vacuum chamber inner now removing device characterized by having a concave cross-sectional shape.