KR101002240B1 - Water jacket structure of nozzle of ladle heating burner - Google Patents

Abstract

The present invention relates to a water jacket structure of a nozzle for a ladle heating burner in which a cooling water circulation structure of a water jacket formed on a nozzle for a ladle heating burner is improved.

In the water jacket structure of the nozzle for ladle heating burner according to the present invention, the cooling water inflow passage Pi connected to the cooling water inlet 65 has a longitudinal direction of the nozzle by the first vertical wall 51 and the second vertical wall 52. The upper and lower ends of the first vertical wall 51 are connected to the upper circular part 61 and the lower circular part 62, respectively, and the upper end of the second vertical wall 52 is the upper circular part 61. The lower end of the second vertical wall 52 is connected to the first lower horizontal wall 53, and the lower end of the cooling water inflow passage Pi is connected to the first lower horizontal passage P1. 1 A plurality of horizontal passages P2, P3, P4, and P5 are formed by the plurality of horizontal walls 54, 55, and 56 formed on the lower horizontal wall 53, and are supplied to the cooling water inflow passage Pi. Cooling water flows from the lower side to the upper side in a zigzag manner along the horizontal passages P1, P2, P3, P4 and P5 formed by the horizontal walls P1, P2, P3, P4 and P5, and through the outlet 66.It is characterized in that the discharge.

Description

Water jacket structure of nozzle for ladle heating burner {WATER JACKET STRUCTURE OF NOZZLE OF LADLE HEATING BURNER}

The present invention relates to a water jacket structure of a nozzle for ladle heating burners, and more particularly, to a water jacket structure of a nozzle for ladle heating burners having an improved cooling water circulation structure.

Referring to Figure 1, Figure 1 is a schematic diagram showing the shape of the casting ladle and the burner generally used in steel mills. In general, the ladle 1 is provided with a burner 3 is installed in the ladle cover (2) to be covered on the top, the coke oven gas supplied to the fuel supply pipe 4 of the burner and the air supplied to the air supply pipe (5). The flame is formed, and the flame is radiated into the ladle by the nozzle 6.

Referring to FIG. 2, the nozzles 6 have flange portions 9 and 10 coupled to the ladle cover at the upper end of the outer circumferential surface 7, and the flame discharge portion of the burner is mounted to the upper mounting hole 10. The flame ejected from the flame discharge portion of the burner is radiated into the ladle through the injection hole 10, and a water jacket 11 for cooling water circulation is formed between the outer circumferential surface 7 and the inner circumferential surface 8.

Referring to FIG. 3, in the water jacket 11, the coolant inlet 12 and the outlet 13 are separated by the partition 14, and a channel is formed in the first vertical guide wall 15 and the second vertical. A guide wall 16 is formed, and a third vertical guide wall 17 is disposed between the first vertical guide wall 15 and the second vertical guide wall 16.

In this case, upper ends of the first and second vertical guide walls 15 and 16 are connected to the upper surface 20 of the nozzle, and lower ends of the first and second vertical guide walls 15 and 16 are lower surfaces of the nozzle. Lower passages 18 and 19 spaced apart from the 21 and flowing coolant are formed, and a lower end of the third vertical guide wall 17 is connected to the lower surface 21 of the nozzle, and the third vertical guide wall 21. ) Is spaced apart from the upper surface 20 of the nozzle, the upper passage 23 through which the coolant flows.

As shown in FIG. 3, the coolant flowing through the coolant inlet 12 is cooled by the water jacket 11 having the water channel as described above to cool the nozzle while flowing up and down in a zigzag manner, and the outlet hole 13 Is discharged through).

Conventional ladle heating burner nozzle having the water channel as described above has a problem that the residue 25 contained in the coolant is accumulated in the lower passages 18 and 19 of the water jacket to interfere with the flow of the coolant or to block the flow of the coolant. there was.

Accordingly, an object of the present invention is a guide wall for guiding the flow of the coolant is formed horizontally in the circumferential direction, so that the coolant flows in a zigzag manner, the ladle heating burner for preventing the accumulation of debris at the bottom of the water channel It is to provide a water jacket structure of the nozzle.

In the water jacket structure of the nozzle for ladle heating burner according to the present invention for achieving the above object, the cooling water inlet passage connected to the cooling water inlet is formed in the longitudinal direction of the nozzle by the first vertical wall and the second vertical wall, Upper and lower ends of the first vertical wall are respectively connected to the upper and lower circular parts, upper ends of the second vertical walls are connected to the upper circular parts, and lower ends of the second vertical walls are connected to the first lower horizontal wall. The lower end of the cooling water inflow passage is connected to the first lower horizontal passage, and the plurality of horizontal passages are formed by the plurality of horizontal walls formed on the upper portion of the first lower horizontal wall to supply the cooling water to the cooling water inflow passage. It flows from the bottom to the top in a zigzag manner left and right along the horizontal passage formed by the horizontal wall, characterized in that discharged through the outlet.

As a result, the water jacket structure of the nozzle for ladle heating burner according to the present invention has the effect of preventing the accumulation of debris at the lower end of the waterway, since the cooling water flows in a zigzag manner.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

4 and 5, in the water jacket structure of the nozzle for ladle heating burner according to the present invention, the cooling water inflow passage Pi connected to the cooling water inlet 65 has a first vertical wall 51 and a second vertical wall. And formed in the longitudinal direction of the nozzle, the upper and lower ends of the first vertical wall 51 are connected to the upper circular portion 61 and the lower circular portion 62, respectively, and the second vertical wall 52 The upper end of is connected to the upper circular portion 61, the lower end of the second vertical wall 52 is connected to the first lower horizontal wall 53, the lower end of the cooling water inlet passage Pi is the first lower horizontal passage A plurality of horizontal passages P2, P3, P4, and P5 are formed by the plurality of horizontal walls 54, 55, and 56 connected to P1 and formed on the first lower horizontal wall 53. The cooling water supplied to the cooling water inflow passage Pi is upper and lower zigzag along the horizontal passages P1, P2, P3, P4 and P5 formed by the horizontal walls P1, P2, P3, P4 and P5. in It flows out and is discharged through the discharge port 66.

In detail, the plurality of horizontal walls 54, 55, and 56 may include second to fourth horizontal walls, and the other end of the first horizontal wall 53 may be spaced apart from the first vertical wall 51. For example, the first water passage P1 and the second horizontal passage P2 are transmitted, one end of the second horizontal wall 54 is connected to the first vertical wall 51, and the second horizontal wall 54 is closed. The other end is spaced apart from the second vertical wall so that the second horizontal passage P2 and the third horizontal passage P3 communicate. In the same manner, one end of the third horizontal wall 55 is connected to the second vertical wall 52, and the other end of the third horizontal wall 55 is spaced apart from the first vertical wall 51. The horizontal passage P3 and the fourth horizontal passage P4 communicate with each other, and the fourth horizontal wall 56 is spaced apart from the second vertical wall 52, so that the fourth horizontal passage P4 and the fifth horizontal passage ( P5 is communicated, and the other end of the fourth horizontal wall 56 is connected to the third vertical wall 57 so that the coolant of the fifth horizontal passage P5 is discharged to the outside through the discharge port 66.

The water jacket structure of the nozzle for ladle heating burner according to the present invention configured as described above allows the coolant to flow from the lower end to the upper end in a zigzag manner to prevent the accumulation of scale in the passage through which the coolant flows. The flow of cooling water can be prevented from being blocked or blocked.

1 is a side view schematically showing an example in which a ladle heating burner is mounted on a ladle cover of a general ladle;

Figure 2 is a side cross-sectional view showing a nozzle for a conventional ladle heating burner.

3 is an exploded view showing the water jacket of the nozzle shown in FIG.

Figure 4 is a perspective view showing a water jacket structure of the nozzle for ladle heating burner according to the present invention

5 is a development view showing the water jacket structure of the nozzle for ladle heating burner according to the present invention

Claims (1)

A cooling water inflow passage Pi connected to the cooling water inlet 65 is formed in the longitudinal direction of the nozzle by the first vertical wall 51 and the second vertical wall 52, and the upper end of the first vertical wall 51 and The lower end is connected to the upper circular part 61 and the lower circular part 62, respectively, and the upper end of the second vertical wall 52 is connected to the upper circular part 61, and the lower end of the second vertical wall 52. It is connected to the first lower horizontal wall 53, the lower end of the cooling water inflow passage (Pi) is connected to the first lower horizontal passage (P1), a plurality of formed on the first lower horizontal wall (53) A plurality of horizontal passages P2, P3, P4, and P5 are formed by the horizontal walls 54, 55, 56, and the coolant supplied to the cooling water inflow passage Pi is provided with the horizontal walls P1, P2, P3, P4, War of the nozzle for a ladle heating burner characterized in that flows from the bottom to the upper side in a zigzag manner along the horizontal passages (P1, P2, P3, P4, P5) formed by P5, and is discharged through the discharge port (66). Jackets structure.

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