KR200441704Y1 - Auto pre-heating apparatus to close for tap hole of furnace - Google Patents

Abstract

The present invention relates to a closure device for the outlet of a blast furnace, and in particular, the mud, the outlet closure material, which is filled in the inside of the outlet closure device installed to close the outlet at the time when the discharge of the molten iron from the outlet is completed at an appropriate temperature. The present invention relates to an automatic preheating device for closure of the outlet of a blast furnace, which enables more stable and effective outlet closure by preheating and keeping warm.

The present invention can accommodate the mud material 14 for closing the exit port therein and can be extruded to the exit port side using the piston 9 as well as a cylindrical body for accommodating the mud material 14 ( In 1), the automatic closing device for the outlet of the outlet of the furnace provided with the circulation water flow path 8 so that the fluid flows, wherein the circulation water flow path 8 is inside the rear portion 110 of the fuselage 1. While the body 111 and the outer body 112 are installed, the first partition wall 113 is spaced at regular intervals between the inner body 111 and the outer body 112 so that fluid flows zigzag in the longitudinal direction of the body. Of course, a plurality of the front portion 120 of the conical shape of the fuselage 1 is provided with an inner fuselage 121 and an outer fuselage 122, the inner fuselage 121 and the outer fuselage 122 The second partition wall 123 is fixed so that fluid flows zigzag in the longitudinal direction of the body 1 between While a plurality of intervals are installed, the fluid supplied to the rear portion 110 of the body 1 flows in the longitudinal direction zigzag in the longitudinal direction of the body 1 of the rear portion 110 and then moves in the circumferential direction. After supplying to the front portion 120 of the) and flowing the front portion 120 of the body 1 in a zigzag in the longitudinal direction and the fluid is supplied again to the rear portion 110 of the body 1, the first fluid flows in It is discharged right next to the place where the fluid is discharged to the rear portion 110 of the body 1 is characterized in that it is circulated.

Fuselage, bulkhead, inner fuselage, outer fuselage

Description

AUTO PRE-HEATING APPARATUS TO CLOSE FOR TAP HOLE OF FURNACE}

1 is a longitudinal cross-sectional view of a mudgun body according to an embodiment of the present invention,

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a cross-sectional view taken along line B-B of FIG.

4 is a channel development view of the mudgun fuselage,

5 is a schematic view showing the entire device configuration of the present invention,

Figure 6 is an external view showing a general exit closing device equipped with an automatic preheating device for the exit of the conventional furnace,

7 is a schematic view showing a state of closing the exit port by the conventional exit door closing device,

8 is a cross-sectional view schematically showing the distal end of the closing device having a closing material automatic preheating device for the exit of the conventional furnace;

9 is a cross-sectional view taken along the line C-C of FIG.

FIG. 10 is a cross-sectional view taken along the line D-D of FIG. 8.

<Description of the symbols for the main parts of the drawings>

1: fuselage 2: closing material inlet

3: temperature sensor 4: press-fitting surface of outlet

5: exit port 8: circulation water flow path

14 mud material 110 rear portion

111: inner fuselage 112: outer fuselage

113: first partition wall 120 front portion

121: inner fuselage 122: outer fuselage

123: second bulkhead 200: fluid supply equipment

210: mud gun feed tank 220: steam line

230: steb heat exchanger 240: temperature control device

250: overflow collector 261, 262, 263, 264: fluid supply line

270: Ring Main Tish

The present invention relates to a closure device for the outlet of the blast furnace, and more specifically, to the mud, which is a outlet closure material filled in the inside of the outlet closure device installed to close the outlet at the time when the discharge of the molten iron is completed. The present invention relates to an automatic preheating device for closure of the outlet of a furnace, in which a outlet flow path is installed to allow a more stable and effective outlet closure by preheating and keeping warm at an appropriate temperature.

In general, the automatic preheating device for the outlet of the furnace is a closure of the outlet installed to close the outlet at the time when the discharge of the vessel is completed, which is a vessel outlet having a function to discharge the melt in the furnace to the outside of the furnace. By preheating and warming the mud, which is the outlet closure material filled in the inside of the apparatus, to a proper temperature, the outlet closure can be more stable and effective.

Conventionally, the automatic exit preheating device of the exit opening has been devised by the present inventor and proposed by Utility Model Publication No. 1998-025571, as shown in FIGS. 6 to 8, the exit opening formed in the furnace 7 ( 5) A packing material for closing the filling material, that is, the mud material 14 through the lid 2, and the tapping port for making the tapping-out pressing surface 4 in close contact with the tapping outlet side using the piston 9 to extrude. In the closing device, the body 1 for accommodating the mud material 14 is provided with a circulation water flow path 8 for circulating cooling water, high temperature water, or high temperature steam, and the body 1 has an internal By installing a preheat temperature sensor (3) capable of sensing the temperature of the mud material (14) to the flow of cooling water, hot water, or hot steam in the circulation water flow path (8) in accordance with the detected temperature It is.

9 and 10, the circulation water flow path 8 is provided at the upper half as shown in FIG. 9 at the front side, and is formed at both the upper and lower half as shown in FIG. 10 at the rear side. .

Of course, the preheating or cooling water circulation water is drained through the drain pipe 10 as shown in FIG.

Therefore, the outlet squeezing surface 4 is brought into close contact with the outlet of the outlet 5 so that the piston 9 is pushed out to close the bar. At this time, the circulating water flow path 8 is formed at the outer surface of the outlet closing device. The preheat temperature sensor 3 selects and distributes the high temperature circulating water 11, the cooling water 12, and the high temperature steam 13 to preheat and warm the mud material at an appropriate temperature, or when necessary. Cooling allows for more stable and effective exit closure.

However, this automatic closing device for the exit port is how the circulation water flow path 8 can be installed in the front and rear parts of the fuselage 1 and how the hot water is in the front and rear parts of the fuselage 1. There is a flaw that is difficult to apply because it is unknown whether it is supplied and circulated.

The present invention was devised to solve the above-mentioned shortcomings, and the circulation water flow path is zigzag in the axial direction at the rear part and the front part of the fuselage, so that the circulation water flow path becomes long and the heat exchange efficiency of the fluid is very high. It is a first object to provide an automatic preheating device for the exit of a blast furnace to become high.

In addition, the present invention provides an automatic pre-heating device for closing the exit of the smelting furnace in which the installation of the circulating water flow path in the rear part and the front part of the fuselage is zigzag in the axial direction to facilitate the work. There is a second purpose.

In addition, the present invention has a third object to provide a closing material automatic preheating device for the outlet of the blast furnace to facilitate the supply of steam, hot water and cooling water to the fuselage.

The automatic closing device for the outlet of the blast furnace according to the present invention for achieving the above object, the mud material for closing the outlet can be accommodated therein and extruded to the outlet using the piston. The cylindrical body for accommodating the mud material is provided with a circulating water flow path for the fluid to flow, wherein the circulating water flow path is provided with an inner body and an outer body at a rear portion of the body, and In addition, a plurality of partition walls are installed at regular intervals so that fluid flows in a zigzag direction in the longitudinal direction of the fuselage, and the front portion formed in the conical shape of the fuselage is provided with an inner fuselage and an outer fuselage. A plurality of partition walls are installed at regular intervals so that fluid flows zigzag in the longitudinal direction of the fuselage. The fluid supplied to the rear part of the fuselage flows zigzag in the longitudinal direction and moves circumferentially, and then is supplied to the front part of the fuselage and flows zigzag in front of the fuselage to supply the fluid to the rear part of the fuselage again. Afterwards, the first fluid is discharged to the side immediately after the inflow and the fluid is discharged to the rear part of the fuselage to circulate.

The automatic closing device for the outlet of the blast furnace according to the present invention, the central shaft in accordance with the installation position of the water supply and drain holes in the rear portion where the partition valve of the circulation water flow path is installed in the fuselage and the water supply and drain holes in the front portion The fluid supplied to the circulation water flow path formed by the inner body, the outer body and the partition wall through the water supply hole in the rear portion is circulated in a zigzag and circulated in the circumferential direction and drained to the drain hole. The fluid supplied to the supply hole of the circulation water flow path formed by the fuselage, the outer fuselage and the partition wall is circulated in a zigzag and circulated in the circumferential direction and drained into the drain hole, while the fluid drained into the drain hole flows into the inlet hole and then It is characterized in that the drain is circulated to the drain hole formed next to.

The automatic closing device for the outlet of the blast furnace according to the present invention is characterized in that the circulation water flow path is installed over 270 ° to the upper part of the front part of the fuselage for efficient preheating.

The automatic closing device for the outlet of the blast furnace according to the present invention is a cylindrical shape for accommodating the mud material to accommodate the mud material as well as to receive the mud material for closing the outlet inside, and to extrude to the outlet side by using a piston. The body is provided with a circulating water flow path for the fluid to flow, and is provided with a fluid supply facility for supplying the fluid to the body, the outer surface is kept warm and the steam to be heated by the steam supplied inside A mud gun feed tank equipped with a heater, a steam line connected to a steam heater of the mud gun feed tank to supply steam, a steb heat exchanger connected to the mud gun feed tank to perform heat exchange, and the mud gun A temperature control device connected to a water supply tank to control a temperature by supplying cooling water, and an overflow in the mud gun water supply tank The overflow collecting part for collecting the coolant to be collected, the fluid supply line connected to the mud gun feed tank by piping, and the fluid supply line are provided with ring mains for controlling the water supply temperature. It features.

The automatic closing device for the outlet of the blast furnace according to the present invention is characterized in that the steam supply valve is installed to inject steam for urgent preheating into the body of the fluid supply line.

Automatic closing device for the outlet of the blast furnace according to the present invention, the fluid supply line is characterized in that the air supply valve which is a flush air line for maintenance and winter ice prevention.

Hereinafter, with reference to the accompanying drawings will be described in detail the automatic preheating device for the exit port of the furnace according to an embodiment of the present invention.

1 is a longitudinal cross-sectional view of the mud gun body according to an embodiment of the present invention, Figure 2 is a cross-sectional view taken along the line A-A of Figure 1, Figure 3 is a cross-sectional view taken along the line B-B, Figure 4 is a 5 is a schematic view showing the entire device configuration of the present invention, and the description thereof will be omitted while attaching the same reference numerals to the same parts as FIGS. 6 to 10 illustrating the prior art.

Automatic material preheating device for the tap opening of the present invention, the mud material 14 for closing the tap opening 5 can be accommodated therein and extruded to the tap opening side using the piston 9, as well as the mud. The cylindrical body 1 for accommodating the ash 14 is formed with a circulation water flow path 8 for circulating cooling water, high temperature water, or hot steam, and the mud material 14 therein is formed in the body 1. By installing a preheat temperature sensor (3) capable of sensing the temperature is to flow any one of the cooling water, hot water, or hot steam in the circulation water flow path (8) according to the detected temperature.

The circulation water flow path 8, which is a main part of the present invention, as shown in FIGS. 1 and 2, is provided with an inner body 111 and an outer body 112 at a rear portion 110 of the body 1. In addition, between the inner body 111 and the outer body 112, a plurality of first partition wall 113 is installed at regular intervals so that fluid flows zigzag in the longitudinal direction of the body, of course, the body (1) Conical shape of the front portion 120 is provided with the inner body 121 and the outer body 122, and between the inner body 121 and the outer body 122 in the longitudinal direction of the body (1) A plurality of second bulkheads 123 are installed at regular intervals so that the fluid flows in a zigzag, while the fluid supplied to the rear portion 110 of the body 1 lengths the body 1 of the rear portion 110. Flows in a zigzag direction and moves in the circumferential direction, and then is supplied to the front part 120 of the body 1 to lengthen the front part 120 of the body 1. After the fluid flows zigzag to the rear part 110 of the fuselage 1 again, the fluid is discharged to the side of the rear part 110 of the fuselage 1 after the fluid is discharged to the side immediately after the first fluid is introduced. It is characterized by being circulated by.

And water supply holes 114a and 114b of the rear portion 110 in which the first and second partitions 113 and 123 of the circulation water flow path 8 are provided with a connection valve of a fluid (not shown) installed in the body 1. And according to the installation position of the drain holes (114c, 114d) and the water supply hole (124a) and the drain hole (124b) of the front portion 120 is a matter of course.

Therefore, the circulation water flow path 8 is provided by the first and second partition walls 113 and 123 in a zigzag direction in the axial (center) direction in the rear portion 110 and the front portion 120 of the body 1. The circulating water flow path 8 becomes long, and the heat exchange efficiency of the fluid becomes very high.

In addition, the circulating water flow path 8 in the rear portion 110 and the front portion 120 of the body 1 is zigzag in the axial (center) direction to the first and second partitions 113 and 123. Installation is the easiest.

In addition, the fluid supplied to the circulation water flow path 8 formed by the inner body 111, the outer body 112, and the first partition wall 113 through the water supply hole 114a of the rear part 110 is zigzag. Circulating in the circumferential direction while being circulated and drained to the drain hole 114b, the circulation water flow path 8 formed by the inner body 121, the outer body 122 and the second partition wall 123 of the front portion 120 The fluid supplied to the supply hole 124a of the gas is circulated in a zigzag and circulated in the circumferential direction and drained to the drain hole 124b.

Thereafter, the fluid drained into the drain hole 124b is introduced into the inlet hole 114c and then drained and circulated to the drain hole 114d formed next to the water supply hole 114a.

In addition, the rear portion 110 and the front portion 120 may be assembled by dividing the length in the axial direction as needed.

When explaining the automatic closing device for the outlet of the blast furnace according to the present invention, having a cylindrical body (1) capable of filling the closure, the closing material inlet (2) is formed on the rear side of the upper In order to detect the preheating temperature of the closing material so that the closing material can close the exit port and be preheated to an optimal temperature at which the operation of the device can be made smoothly, a temperature sensor 3 for controlling the preheating temperature is mounted inside the fuselage. A tapping port pressing surface 4, which is pressed against the tap opening 5 and penetrates the lead 7 formed inside the furnace so that the closure material does not flow out, is formed at the tip.

In addition, the exit opening device is operated to allow the exit port pressing surface 4 to be pressed into the exit port 5 formed so as to penetrate the inside of the furnace and the edible 7 constructed as shown in FIG. It shows the state blocked by the ash (14), and the molten iron in the bottom 6 of the furnace is discharged to the outside through the flow path connected to the outlet 5 and the outlet closing device is operated when the discharge is completed. The pressing surface 4 is brought into close contact with the precursor, and the closing member 14, which is properly preheated inside the fuselage 1, is forcibly extruded with the piston 9 so that the closing member 14 opens the exit port 5 and the flow path. By reaching the inside of the furnace (6) through to block the external discharge of the molten iron.

In addition, as shown in Figure 1, a cross-sectional view schematically showing the distal end portion of the closing device having an automatic preheating device for the outlet of the blast furnace according to the present invention, which is introduced into the fuselage 1 through the closing material inlet (2) The closure material 14 is preheated by the heat conduction of the high temperature preheating water sent through a separate supply pipe not shown to the circulation water flow path 8 properly disposed outside the fuselage, and the closure material 14 due to excessive preheating. In order to prevent the hardening plasticity of the circulating water by the preheating temperature sensor (3) installed in the body (1) to allow the automatic control of hot water or cooling water.

In addition, it is preferable to allow rapid preheating by high temperature steam in consideration of the emergency operation state in which emergency preheating must be completed in a short time due to a change in operating conditions, which can be easily carried out even if it is not explained by those skilled in the art. There will be.

Meanwhile, as shown in FIG. 1, the outlet closing device is installed at a location close to the high temperature radiant heat emitted from the molten metal discharged from the blast furnace, and thus is sufficient to protect the device from the radiant heat. A method must be devised to prevent deterioration of the equipment and equipment, and as a means of this, when the closing device is in operation to close the outlet 5, that is, in the state shown in FIG. Since the equipment is exposed to the water, the cooling water is circulated to prevent deterioration of the equipment. On the contrary, when the operation is in the standby state, that is, the state shown in FIG. Preheat (14) evenly enough.

In this way, the preheating or cooling water circulating water may be drained and recovered through the drain pipe 10 to be reused as needed to minimize waste of resources.

FIG. 2 is a cross-sectional view taken along the line A-A of FIG. 1, in which the circulation passage 8 is installed in the body 1 in the circumferential direction to enable uniform preheating of the closed material, and also to enhance the cooling function, thereby increasing the piston inside the body. (9) It is to be structured to contribute to the extension of the surface of the equipment by completely protecting the accessories such as from high heat and preventing the deterioration of the equipment.

3 is a cross-sectional view taken along the line B-B of Figure 1, to avoid the problems caused by the molten iron without installing the circulation water flow path 8 in the lower side which is in contact with the molten iron discharged from the blast furnace temperature is high. That is, it is characterized in that the circulating water flow path (8) is provided over 270 ° for efficient preheating on the front portion 120 of the body (1).

In addition, by changing the material of the mud gun and the like, in some cases, the circulation water flow path 8 may be provided over the front part 120 of the fuselage 1 by 360 °.

On the other hand, the automatic material preheating device for the outlet of the furnace of the present invention requires a fluid supply facility 200 for supplying fluid to the fuselage 1, as shown in FIG. In addition, the inside of the mud gun water supply tank 210 and the steam heater 211 in which the steam heater 211 is installed so as to be heated by the steam supplied therein is connected to the steam heater 211 of the mud gun water supply tank 210 A steam line 220 to be supplied, a stave heat exchanger 230 connected to the mud gun water supply tank 210 to perform heat exchange, and a mud gun water supply tank 210 to cool the water The temperature control device 240 to control the temperature by supplying, to the overflow collecting unit 250 to collect the coolant overflowed from the mud gun feed tank 210, and to the mud gun feed tank 210 Each fluid connected to the pipe The supply lines 261, 262, 263, 264 and the fluid supply line are provided with a ring main T / C for controlling the water supply temperature.

Here, the fluid supply lines 261, 262, 263, 264 are insulated, and steam supply valves 261a, 262a, 263a, 264a are installed therein to inject steam for urgent preheating into the fuselage 1.

In addition, the fluid supply lines (261, 262, 263, 264) are provided with air supply valves (261b, 262b, 263b, 264b), which are flush air lines, for maintenance and winter freezing prevention. In addition, the air supply valve (261b, 262b, 263b, 264b) is preferably provided with a manual valve.

In addition, it is preferable to provide a passive valve so as to cut off the hot water at a position close to the body (1).

Therefore, steam and hot water and cooling water are supplied through the fluid supply lines 261, 262, 263 and 264 of the fluid supply facility 200 to preheat and warm the mud material inside the fuselage 1 to an appropriate temperature, or to cool if necessary. A stable and effective exit closure is possible.

As described above, according to the automatic closing device for the outlet of the blast furnace of the present invention, the circulating water flow path is provided by the zigzag partition wall in the axial direction at the rear part and the front part of the fuselage, so that the circulating water flow path becomes long and the heat exchange of the fluid occurs. The efficiency is very high.

According to the automatic material preheating device for the outlet of the furnace of the present invention, the installation of the circulation water flow path in the rear part and the front part of the fuselage has the effect that it is most easily installed by the zig-zag partition wall in the axial direction. .

According to the automatic closing device for the outlet of the furnace of the present invention, there is an effect that it is easy to supply steam, hot water and cooling water to the fuselage.

An embodiment of the present invention described above and illustrated in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

Claims (8)

The mud material 14 for closing the exit port can be accommodated therein and extruded to the exit port side using the piston 9 as well as the cylindrical body 1 for accommodating the mud material 14 has a fluid. In the closing material automatic preheating device for the exit port of the furnace provided with the circulation water flow path (8), The circulation water flow path (8) is provided with an inner body (111) and an outer body (112) at a rear portion (110) of the body (1); A plurality of first first partitions 113 are formed at regular intervals between the inner fuselage 111 and the outer fuselage 112 so that fluid flows in a zigzag direction along the longitudinal direction of the fuselage 1; An inner body 121 and an outer body 122 are provided in the front portion 120 having a conical shape of the body 1, and between the inner body 121 and the outer body 122, the body ( A plurality of second second partition wall 123 is provided at regular intervals so that the fluid flows zigzag along the longitudinal direction of 1); After the fluid supplied to the rear portion 110 of the body 1 flows between the first first partition 113 and the second second partition 123, the rear of the body 1 After re-supplied to the unit 110, the automatic closing device for the exit port of the furnace characterized in that it has a circulation process discharged through the rear portion 110 of the fuselage (1). delete The method of claim 1, Automatic preheating device for the exit port of the furnace, characterized in that the circulation water flow path (8) is provided over 270 ° for efficient preheating in the upper portion of the front part (120) of the fuselage (1). The mud material 14 for closing the exit port can be accommodated therein and extruded to the exit port side using the piston 9 as well as the cylindrical body 1 for accommodating the mud material 14 has a fluid. In the closing material automatic preheating device for the exit port of the furnace provided with the circulation water flow path (8), A fluid supply facility 200 is further provided to supply fluid to the body 1, The fluid supply facility 200 is a mud gun water supply tank 210 having a steam heater 211 and the mud gun water supply tank to insulate the outer surface and to be heated by the steam supplied therein A steam line 220 connected to the steam heater 211 of the 210 to supply steam, a stave heat exchanger 230 connected to the mud gun feed tank 210 to perform heat exchange; The temperature control device 240 is connected to the mud gun water supply tank 210 to control the temperature by supplying the cooling water, and the overflow collecting unit configured to collect the coolant overflowed from the mud gun water supply tank 210. 250, each of the fluid supply lines 261, 262, 263, 264 connected to the mud gun feed tank 210 by pipes, and the fluid supply line include ring mains 270 for controlling the water supply temperature. A blast furnace comprising C) Mechanism for automatic re-closing of chulseon preheating device. The method of claim 4, wherein Automatic closing of the outlet port of the furnace, characterized in that the steam supply valve (261a, 262a, 263a, 264a) is installed in the fluid supply line (261, 262, 263, 264) to inject steam for urgent preheating into the body (1). Preheater. The method of claim 4, wherein The fluid supply line (261, 262, 263, 264) automatic preheating device for the outlet of the furnace, characterized in that the air supply valve (261b, 262b, 263b, 264b) is a flush air line for maintenance and winter ice prevention. delete The method according to claim 4 to 6, Automatic preheating device for the exit port of the furnace, characterized in that the circulation water flow path (8) is provided over 270 ° for efficient preheating in the upper portion of the front part (120) of the fuselage (1).

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