KR19980062011U - Hot Wind Damage Detection Device of Furnace - Google Patents

Abstract

The present invention relates to a hot wind damage damage detection device of the furnace, in particular in the hot wind damage damage detection device of the furnace, the other end is installed so as to be immersed in the tundish drain pipe 24 while the other end is connected to the top of the hot wind furnace 20 , A curved pipe portion 28-3, a rising pipe 28-1, and a falling pipe 28-2 are formed at the stop portion, and drainage is connected to the controller 60 at the lower side of the curved pipe portion 28-3. A cooling water discharge pipe 28 in which the pressure switch 42 is installed; A reducer tube 29 having a lower end coupled to an upper side of the curved pipe part 28-3 and having an automatic side 33 opened and closed by the controller 60; While the upper end of the reducer tube 29 is connected to the lower air vent automatic valve 35 is opened and closed by the controller 60 on the upper side, and the sight glass 30-1 is formed on the side of the bubble collection A tank 30; A tank installed inside the bubble collecting tank 30 and having a level detector 36, 37, 38 and an instrumentation level transmitter 39 connected to the calculator 40, the detector 50, and the controller 60. A level detecting tube 41; Hot air damage damage detection device of the blast furnace characterized in that it consists of a drain pipe 34 is installed in the lower portion of the bubble collecting tank 30, the automatic valve 34-1 is opened and closed by the controller 60 is installed. It is about.

Description

Hot Wind Damage Detection Device of Furnace

The present invention relates to a hot wind damage damage detection device of the furnace, in particular, by accurately measuring and analyzing the amount of bubbles generated in the cooling water drainage pipes of the deformed body, toilet seat, and the liquid coolant passes through The present invention relates to a hot wind damage detection device of a furnace capable of measuring whether the hot wind damage is damaged.

In general, in the hot blast furnace equipment of the furnace, the hot air of the high pressure (4.0 ㎏ / ㎠) and the high temperature (1200 ℃) of the hot blast furnace as shown in Figure 1 through the hot blast side 20 of the large valve furnace 13 As it is supplied to the company, the molten iron is produced.

In this case, as shown in FIG. 2, a cooling water flow path is formed in each portion in order to prevent damage to the equipment due to overheating. (22, 6) and body (23, 7) is composed of three places.

However, the hot wind furnace 20 through which high pressure and high temperature hot air passes through generates local cracks and damages due to continuous opening and closing operation and other disturbance factors, and the hot wind passing through the inside of the hot air passage damages the hot wind furnace. It enters into the water flowing along the cooling water flow path in a bubble state, and vibrates and impacts the inner circumferential surface of the flow path. Therefore, damage occurs on the inner circumferential surface of the cooling water flow path. The internal fire retardant of the hot air tube will be fatally damaged.

Therefore, in order to prevent such a problem, conventionally, during the regular repair, the hot air valve 20 is removed for a long time, and precision diagnosis is performed, or it is installed in a curved part of an expensive tower type drain pipe of the hot air pipe drain lines 5, 6, and 7. The air vent valves (5-1, 6-1, 7-1) are completely closed and the drainage pipe 24 shuts off the flow of the drainage so that the drainage pipe is submerged in the water. Judgment was made to determine whether the hot air deflection is damaged.

However, such a conventional method is difficult to determine the exact damage site because it is measured by the amount of bubbles generated by the naked eye, which causes a problem in the facility management can not be made a concrete repair plan.

In addition, in the tundish drainage pipe 24 installed in the height area, safety problems such as falling when a worker directly measures the amount of air bubbles are caused.

The present invention precisely measures and analyzes the amount of bubbles generated in the cooling water drainage pipes through which the coolant passes, the hot air in the furnace to measure the damage of the hot air. The object is to provide a stool damage detection device.

1 is a schematic view showing a hot air supply facility of the furnace;

Figure 2 is a schematic diagram showing a conventional hot air damage damage detection device;

Figure 3 is a schematic diagram showing a hot wind damage damage detection device of the furnace according to the present invention,

Figure 4 is a flow chart showing the operation sequence of the hot wind damage damage detection device of the furnace according to the present invention.

Explanation of symbols used in the main part of the drawing

5: variant cooling water drainage pipe 6: toilet seat cooling water drainage pipe 7: displacement cooling water drainage pipe 10: blower fan 11: heat storage chamber 12: combustion chamber 13: furnace 20: hot air flow 21: variable cooling water supply pipe 22: toilet seat cooling water supply pipe 23: Refrigerant cooling water supply pipe 24: tundish drain pipe 25: common drain pipe 27: air vent 28: cooling water discharge pipe 29: reducer pipe 30: bubble collection tank 31: connection flange 32: bypass line 33: automatic valve 34: drain pipe 35: air Vent automatic side 36,37.38: Level detector 39: Instrument level transmitter 40: Calculator 41: Tank level detector 42: Drain pressure switch 50: Detector 60: Controller

In order to achieve the above object, the present invention, in the hot wind damage damage detection device of the furnace, one end is connected to the upper portion of the hot air flow while the other end is installed in the tundish drain pipe, the bent portion, the rising pipe, the down pipe It is formed, and the cooling water discharge pipe is installed in the drain pressure switch is connected to the controller on the lower side of the curved pipe; A reducer tube having a lower end coupled to an upper side of the curved tube part, and having an automatic side opened and closed by the controller; An air vent automatic valve which is opened and closed by the controller at an upper portion thereof while the upper end of the reducer tube is connected to a lower portion thereof, and a bubble collecting tank having a sight glass vertically formed at a side thereof; A tank level detector tube installed to be in communication with the bubble collection tank and installed with a level detector connected to a calculator, a detector and a controller and an instrumentation level transmitter; It is provided in the bottom of the bubble collecting tank and provides a hot wind damage damage detection device of the furnace characterized in that it is composed of a drain pipe is installed automatic valve opening and closing by the controller.

The configuration of the present invention will be described with reference to the drawings.

Figure 3 is a schematic diagram showing a hot wind damage damage detection device of the furnace according to the present invention, Figure 4 is a flow chart showing the operation sequence of the hot wind damage damage detection device of the furnace according to the present invention.

The lower end is connected to the upper portion of the hot air deflection 20, the cooling water drainage pipe 28 for discharging by integrating and discharging the cooling water supplied from the deformed body, the toilet seat and the refrigerating coolant supply pipes 21, 22 and 23 in order to maximize air bubbles at the lower end. An approximately C-shaped curved pipe portion 28-3 is formed.

A drainage pressure switch 42 controlled by the controller 60 is provided below the curved portion 28-3, and the upper portion of the curved portion has a substantially U-shaped elevated tower drainage riser 28-1 and a high price. The tower down pipe 28-2 is connected.

In addition, an air vent automatic valve 27 connected to the controller 60 is installed at the connection portion of the high tower drainage riser 28-1 and the high tower lowering pipe 28-2 to which the upper end is connected to form an approximately U-shape. It is.

Meanwhile, the lower end of the reducer pipe 29 is coupled to the upper side of the curved portion 28-3 of the cooling water discharge pipe 28 so as to maintain the airtightness by the connection flange 31, and by the controller 60. The reducer pipe 29 in which the controlled automatic valve 33 is installed is connected to the lower end of the bubble collecting tank 30 at an upper end thereof.

At this time, the bypass line 32 is connected to the upper and lower ends of the reducer pipe 29 for manual operation in case of an emergency occurrence in which the automatic valve 33 is not operated. 32-1) are installed.

In addition, the bubble collection tank 30 installed on the upper portion of the reducer pipe 29 is vertically installed at the center of the front and rear sides, and the sight glass 30-1 for bubble generation state observation is vertically installed on the controller 60. An air vent automatic valve 35 is installed to be controlled by the air vent.

In addition, on the right side of the bubble collecting tank 30, a tank level detection tube 41 which is internally connected to the upper and lower ends of the tank is installed vertically, and an instrumentation level transmitter connected to the upper and lower ends of the tank level detection tube 41 is provided. Numeral 39 detects the pressure generated by the bubble generation unit in which the bubble is generated and the pressure caused by the head difference, and transmits the generated electric and instrumentation level detection signals to the calculator 40.

At this time, the tank level detection pipe 41 is provided with upper, middle, and lower level detectors 36, 37, 38 so as to measure the level of water in the tank. The level detection signal is received by the detector 50 via the calculator 40.

On the other hand, the bubble collecting tank 30 is provided with a drain pipe 34 on one side of the lower side, and an automatic valve 34-1 controlled by the controller 60 in the drain pipe 34 for discharging the residual water in the bubble collecting tank. Is installed.

Hereinafter will be described the operation of the present invention.

When the sequence start button of the controller 60 is pressed, the drainage flow valve 33 is closed and the air vent automatic valve 35 and the drain drain automatic valve 34-1 are opened, and the bubble collection tank 30 is opened. Drain the residual water inside.

When the complete level of residual water in the bubble collection tank 30 is detected by the lower level detector 38, a series of processes for measuring the bubble generation amount are started.

That is, the drain pressure switch 42 installed at the lower end of the cooling water drain pipe 28 while the drain oil flow valve 33, the drain drain automatic valve 34-1, and the air vent 35 is closed detects the set pressure. do.

And while the drainage oil flow 33 is opened, the drainage and bubbles in the reducer pipe 29 rises and flows into the bubble collecting tank 30, and the bubbles in the reducer pipe are introduced into the bubble collecting tank 30 while the water flows into the bubble collecting tank 30. Due to the difference in specific gravity, the bubble layer is formed in the upper portion of the tank.

In addition, as the bubble layer in the bubble collection tank 30 becomes thicker, the water level in the bubble collection tank is lowered, and the water level is detected by the level detectors 36, 37, and 38, and is detected by the detector 40 through the calculator 40. Are sent to 50).

On the other hand, the instrumentation level transmitter 39, which is installed to measure an accurate amount of bubble generation, detects the pressure caused by the bubble generation part and the water head difference in which the bubble is generated, and the electric and instrumentation level detection signal generated at this time is a calculator. It is sent to (40) and appears as a numerical value on the control panel.

In the controller 60, a timer is built in to control a series of processes, and when an increase change starts over a predetermined value, an alarm is sent to the central cab.

The present invention accurately measures and analyzes the amount of bubbles generated in the coolant drainage pipes of the deformed body, toilet seat, and deformed body through which the coolant passes, and can measure the damage of hot air. It provides the effect that productivity can be promoted.

Claims (1)

In the hot wind damage detection device of the furnace, One end is connected to the upper portion of the hot air stream 20, the other end is installed so as to be immersed in the tundish drain pipe 24, the curved portion 28-3, the rising pipe 28-1, the downcoming pipe 28- 2) is formed, and the cooling water discharge pipe 28, the drain pressure switch 42 is connected to the controller 60 in the lower side of the curved pipe portion 28-3; A reducer tube 29 having a lower end coupled to an upper side of the curved pipe part 28-3 and having an automatic side 33 opened and closed by the controller 60; While the upper end of the reducer tube 29 is connected to the lower air vent automatic valve 35 is opened and closed by the controller 60 on the upper side, and the sight glass 30-1 is formed on the side of the bubble collection A tank 30; A tank installed inside the bubble collecting tank 30 and having a level detector 36, 37, 38 and an instrumentation level transmitter 39 connected to the calculator 40, the detector 50, and the controller 60. A level detecting tube 41; Hot air damage damage detection device of the blast furnace characterized in that it consists of a drain pipe 34 is installed in the lower portion of the bubble collecting tank 30, the automatic valve 34-1 is opened and closed by the controller 60 is installed. .