KR200185440Y1 - Pre-heating device for nozzle - Google Patents

Abstract

The present invention relates to a device for preheating a tundish deposition nozzle, which is a continuous casting facility, and more specifically, a burner automatic ignition device is installed to prevent ignition of workers by automating ignition, and to divide the burner body and the burner part. The present invention relates to an immersion nozzle preheating device that improves workability and burner efficiency by extending the exchange cycle due to premature wear and making it easy to adjust burner preheat height and angle.

Description

Preheating device of tundish immersion nozzle

1 is a block diagram of a conventional tundish deposition nozzle preheat burner.

2 is an overall configuration diagram of a safety burner for preheating the tundish immersion nozzle according to the present invention.

3 is a detailed view of the burner section in this issue.

Figure 4 is a detailed view of the burner adjustment stand of the subject innovation.

5 is a detailed plan view of the control panel of the present invention.

6 is a detailed view of the valve control stand of the present invention.

Figure 7 is a state of use of the tundish deposition nozzle preheating safety burner according to the present invention.

* Explanation of symbols for main parts of the drawings

A: Burner part B: Burner adjusting stand part

C: Control panel D: Valve adjustment stand

10: Steel protective box 11a, 11b: City gas and compressed air piping

12a, 12b: Valve operation piping 13a, 13b: Shut-off valve

14a, 14b: Automatic valve 15a, 15b: Manual valve

16a, 16b: flow control valve 20a, 20b: piping

30a, 30b: flexible hose 40: burner body

41a, 41b: Branch 42: Cancer

43: connection flange 44: flame prevention plate

45: crater connector 46: crater section

47: city gas supply pipe 48: gas diffusion pipe

50: Panel 51a, 51b: Ignition and fire extinguishing switch

52a, 52b: relay 53: ignition transformer

60: spark plug 61: piping

62: flexible tube 64: wire protective tube

65a, 65b: Support 66: Wire

70: moving cart 71: wheels

72: cylindrical support 73: ring

74: pin 75: rotation ring

76: assembly device 77: fixed part

78: tightening unit 79: tightening bolt

The present invention relates to the preheating device of the deposition nozzle used in every casting in the continuous casting facility tundish, in particular, to improve the automatic ignition gas burner to form an automatic ignition device, and also to automate ignition and burner body and fireball By separating the parts, only the crater part can be replaced quickly, and the burner stand is intended to prevent the safety accident and burner efficiency caused by using the gas burner by attaching the moving wheel and the burner height and angle adjusting device.

Conventionally, in the continuous casting operation as shown in FIG. 1, the immersion nozzle 80 used for casting molten steel in a tundish into a mold is a refractory manufactured by a compression molding method, while contacting with hot molten steel during casting. In order to prevent the refractory cracks and cutting accidents and clogging of the immersion nozzles 80, the immersion nozzle preheating burner 110 is used to preheat it to about 800 ° C. or more before casting. The burner 110 burns an ignition ignition to the burner section 111 of the burner 110, and then another worker opens the city gas manual valve 130 and ignites the burner, as well as causing a burn accident. Since the 110 and the crater 111 are integrated, the burner 110 must be replaced early due to the wear of the crater 111. In addition, the burner stand 120 supporting the burner 110 is a fixed type, which makes it difficult and cumbersome when adjusting the preheating position of the burner 110, and the angle of the burner 110 cannot be adjusted so that the preheat flame is released into the atmosphere. There has been a case.

The present invention was devised to solve the above-mentioned conventional problems, and its purpose is to prevent gas explosion accidents caused by manual operation and improve gas burner function to greatly extend burner efficiency and service life. It is to provide a preheating device for the deposition nozzle.

The present invention for achieving the above object will be described in detail with reference to the accompanying drawings.

2 is an overall configuration of the immersion nozzle preheat burner of the present invention, the configuration is a burner portion (A) with a spark plug 60, burner adjustment stand portion (B) for burner transport and adjustment, and the electric device It consists of a control panel (C) for controlling the, and the valve adjustment stand (D) for controlling the supplied city gas and compressed air as an automatic or manual valve (alve).

In addition, the supply of the city gas and the compressed air through the valve adjustment stand (D) is the supply pipe (41a, 41b) of the burner portion (A) as the branch pipe (20a, 20b) and flexible hoses (30a, 30b), respectively. Is supplied to the ignition wire 66 connected from the control panel C to the burner spark plug 60 by the pipe 61, the flexible tube 62, and the wire protection tube 64 of the burner A. It is protected and connected.

3 is a detailed view of the burner part A of FIG. 2, the burner body 40 having the spark plug 60 built therein and a fireball part 46 installed in front of the burner body 40, and the lower part of the burner body 40. There is a large category of cancer (42).

The arm 42 connected to the burner body 40 is made of a pipe and has a city gas supply pipe 47 built therein, connected to the gas diffusion pipe 48 attached to the inside of the burner body 40, and compressed air. The branch pipe (41b) is supplied is penetrated with the burner body 40 through the arm (42).

In addition, the wire protection tube 64 is connected to the spark plug 60 is coupled to the arm 42 as the support (65a, 65b).

In addition, the burner body 40 and the crater portion 46 and the crater connector 45 connected to each other are cylindrical and fit the inner and outer diameters for quick exchange when the crater 46 wears, and the crater connector 45 and the burner body. The flame arrestor 44 is fitted between the connecting flanges 43 of the 40 to be coupled as a bolt.

4 is a detailed view of the burner stand part B of FIG. 2 of the present invention, and the cylindrical support 72 is mounted on the moving cart 70 having four wheels 71 attached to the bottom thereof, and the burner vertical adjustment ring 73 is fitted. It is fixed as a pin (74), the upper portion of the rotary ring 75 is fitted with an assembling device (76) capable of fixing the burner arm (42). The assembly device 76 of the arm 42 is divided into a fixing part 77 and a fastening part 78 so as to simplify the replacement of the burner, tightening the arm 42 by bolts, and adjusting the burner angle to 45 °. It is then fixed as a tightening bolt (79).

5 is a detailed view of the control panel (C) of FIG. 2 of the present invention, and the ignition transformer 53 and the plurality of relays 52a and 52b are attached to the inside of the panel 50, and the ignition switch 51a and the fire extinguishing device are attached to the outside. The switch 51b is assembled.

FIG. 6 is a detailed view of the valve adjusting stand D of the second design of the present invention, and the steel protection box 10 includes valves for manually and automatically controlling supplied city gas and compressed air. . The supplied city gas pipe 11a is connected to the valve operating valve pipe 12a, and the shutoff valve 13a is attached after the connected valve operating valve pipe 12a. After the shutoff valve 13a, the pipe is divided into an automatic valve 14a branch and a manual valve 15a branch so that the manual valve 15a can be opened and used when the automatic valve 14a is abnormal. The flow rate control valve 17a is attached. After the flow control valve, the pipe 18a is coupled with the pipe 20a connected to the burner. In addition, the compressed air pipe 18a to be supplied is coupled to the pipe 20a connected to the burner. The supplied compressed air pipe 11b is connected to the valve operating valve pipe 12b configured in the same manner as the city gas valve and is supplied to the burner.

7 is a state diagram of the use of the tundish 90 immersion nozzle 80 preheating apparatus according to the present invention is inserted into the pre-heating unit of the burner into the immersion nozzle discharge port 81 prepared.

In the present invention configured as described above, the operator adjusts the burner stand portion B one hour before the start of the casting operation, and inserts the burner crater portion 46 about 10 mm into the immersion nozzle discharge port 81, and then attaches to the panel 50. When the switch 51a is called, the relays 52a and 52b open the city gas solenoid valve 14a and the compressed air solenoid valve 14b in the operating valve operating valve to supply the city gas and the compressed air and simultaneously supply the ignition transformer 53 ) Is supplied with power.

When power is supplied to the ignition transformer 53 and a high voltage current is generated, a positive pole flows through the ignition plug 60 and the wire 68 through the ignition cable 66 connected to the ignition transformer terminal 54, and the burner body ( 40) In the negative electrode plate 49 attached to the inner gas diffusion tube 48, a negative electrode flows to generate an intense spark between the positive electrode wire 68 and the negative electrode plate 49 so that the burner is automatically ignited.

When the burner is automatically ignited, the flow control valves 17a and 17b attached to the city gas and the compressed air pipe are adjusted to be a standard flame to preheat the deposition nozzle.

In addition, burner fire extinguishing is carried out by blocking the city gas and the compressed air solenoid valves 14a and 14b of the valve operating valve by pressing the fire extinguishing switch 51b attached to the panel 50.

By automating burner ignition and extinguishing by the present invention as described above, it is possible to prevent burns caused by gas explosions that have occurred in large amounts during manual ignition in the past, and burners may be burned early due to burner crater wear. By splitting the burner body and the crater part, which has to be replaced, it is possible to save a lot of expenses by quickly replacing only the crater part when the crater part wears.

In addition, it is a useful design that can improve the workability and burner efficiency by adjusting the transfer of the burner stand.

Claims (1)

In forming the preheating apparatus of the tundish immersion nozzle, which is a continuous casting facility, the crater section 46 and the crater connector 45 connected to the burner body 40 are cylindrical, so that they can be quickly replaced during wear of the crater section 46. Burner part A, which is fitted with an outer diameter, and fitted with a flame prevention plate 44 between the crater connector 45 and the connection flange 43 of the burner body 40 and is connected as a bolt, and four wheels ( A cylindrical support 72 is erected on the moving trolley 70 to which 71 is attached, and the burner upper and lower adjustment ring 73 is fitted to be fixed as a pin 74, and the burner arm 42 can be fixed to the upper portion thereof. The burner adjustment stand part B in which the rotary ring 75 with the assembling device 76 is fitted, and the ignition transformer 53 and the plurality of relays 52a and 52b are attached to the inside of the panel 50. The control panel (C) in which the ignition switch (51a) and the fire extinguishing switch (51b) are assembled to the outside, and the inside of the steel protective box (10) Starting with the city gas and compressed air exhaust plates 11a and 11b, the valve operation valves 12a and 12b, the shutoff valves 13a and 13b, the automatic valves 14a and 14b, and the manual valve 15a ( 15b), a preheating device of a tundish immersion nozzle, characterized in that the configuration consisting of the valve adjustment stand (D) by sequentially installing the flow control valve (16a) (16b).