SU1255835A1 - Cooled element of oven walls - Google Patents

Description

The invention relates to metallurgy, in particular to the construction of a cooled element of the walls of an electric arc furnace.

The purpose of the invention is to increase reliability during operation.

Figure 1 shows the element, a vertical section; Fig. 2 is a wall panel consisting of several elements, a vertical section; fig.Z - wall panel from the working volume of the furnace.

The cooled element is made of pipe 1 or a narrow duct, the upper 2 and lower 3 parts of which are bent. The element is sealed and filled with a working cooler 4. In the upper part 2 pipes of the system 5 are placed secondary. chill For convenience of assembly and replacement of panels, the upper 2 and lower 3 parts of the element can be welded into the collectors 6 and 7. The upper 2 and lower 3 parts of the element are connected by an additional pipe 8. The secondary cooling system 5 is connected to running water, i.e. has an entrance 9 and an exit 10.

The wall panel of the furnace is manufactured as follows.

Separate measuring tubes are bent at the ends, and welded into the upper and lower tubular or box-shaped manifolds 6 and 7. In the upper section of the sheath 6 are installed the tubes of the secondary cooling system 5. The bottom of the upper collector 6 is connected to the top of the lower collector 7 by an additional pipe 8. Then the cooled element is filled with coolant, a collar. and all c (single pipes with collectors and the collectors themselves are sealed, for example, by welding. Secondary system 5

cooling is connected to running water, i.e. has an inlet 9 and an outlet 10 cooler.

The proposed cooled element of the walls works as follows

 After installing the element on the stove; The secondary cooling system 5 is connected to the water supply and the water drain. When the mixture is heated in a furnace, the heat flux falls on the heat-absorbing

pipe surface 1. The water in pipes 1 is heated and boils with a significant heat flux. Steam rises, enters collector 6, condenses on cold surface

the secondary cooling system 5 and through the pipeline 8 flows down to the lower manifold 7. Then everything repeats. The proposed design of the cooled element of the furnace walls allows the manifolds and connecting pipes 8 to be carried to the cold zone. This allows the removal of weak points, welding in the cold zone. The connection of the upper and lower collectors additional tubes made in

cold zone, eliminates the formation of steam plugs and burnout of the main working tubes. All this increases the reliability of the cooled element when

its operation.

The effect of using the proposed design can be obtained, as by saving material for the manufacture of the most cooled

element, and by reducing. furnace downtime associated with the replacement of elements that are out of order. This is especially important on large-capacity high-power furnaces.

V

Yu

FIG. 2

Editor N. Bobkova

Compiled by L.Magayumova

Tehred I. Veres Proofreader M.Samborska

Order 4808/39 Circulation 561 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

fig.Z

Claims (1)

COOLED ELEMENT OF FURNACE WALLS, the inner cavity of which is filled with a working cooler and equipped with a secondary cooling system located in its upper part, characterized in that * in order to increase reliability during operation,. it is equipped with a pipeline connecting the upper and lower parts of the internal cavity to each other. <e SU ,, 1255835 i <12 '