SU1183547A1 - Tuyere tip - Google Patents

Description

The invention relates to ferrous metallurgy, in particular to devices for purging melts with oxidizing gases.

The purpose of the invention is the intensification of 5 cooling zones of the nozzles with the end surface of the tip by destroying the reverse flow of water.

Figure 1 shows the tip of the tuyere, a longitudinal section; figure 2 - section A-A in figure 1; on fig.Z - section bb in figure 1.

The tip consists of a housing 1, nozzles 2, a fitting 3, a separator 4, which forms a channel 5 of water with the housing 1. Water in the channel 5 enters through the pipe 6 and the holes 7 of the separator 4.

Tubes 8 are fixed on the separator in front of the nozzles; the output sections 20 of which are located in channel 5 are oriented tangentially and parallel to the vertical planes passing through the axes of the nozzles and the axis of the nozzle. The outlet sections of the tubes may coincide with the indicated planes. The length of the tubes is chosen so that their lower parts come into contact with the inner end surface of the tip, and the upper ones are on a sub-face with a separator.

The direction of the output sections of the tubes tangentially tangential to a circle passing through the axes of the outlet orifices and parallel to the vertical planes passing through the nozzle axes and the tip axis will eliminate backflows of water, increase its speed in the area of the nozzles with the end surface of the tip in the interstock.

When the total area of the outlet sections of the tubes is less than 0.3, the total area of the holes on the separator is not: an effective destruction of the return flows due to insufficient water flow in the outflowing jets. If the total cross-sectional area of the tubes is more than 0.5 of the total area of the holes in the separator, the water consumption in stagnant zones behind the nozzles decreases, which adversely affects the tip durability.

The tip is cooled as follows.

Water flows into the channel between nozzle 3 and separator 4. Part of its flow through pipe 6 enters channel 5 and, passing the inter-nozzle cavity, spreads from the center of the tip to the periphery into the gaps between nozzles 2. The rest of the water goes through holes 7 and tube 8 to the junction zone of the nozzles 2 with the end surface of the body 1 of the tip, cooling its most heat-stressed areas. At the initial part of the cylindrical gap between the housing 1 and the separator 4, the flows are mixed and discharged from the tip.

The application of the proposed tip will increase its durability compared to the known due to the intensification of cooling zones of nozzles joints with the end surface of the tip from the side of the incoming flow of water, without deteriorating the cooling of the remaining parts of the tuyere.

1183547

Aa

Φι / g.Z.

four

Claims (2)

1. TURN TURN, comprising a housing, a separator with holes on the front and cylindrical parts and channels for supplying and discharging cooling water, characterized in that, in order to intensify the cooling of the junction zones of nozzles with the end surface of the tip, it is provided placed on the separator in the water discharge channel tangentially oriented water nozzles. 2. The tip according to claim 1, characterized in that the total area of the output sections of the nozzles is equal to 0.30.5 of the total area of the holes on the separator. Phage. one one 1 183547 2