SU16685A1 - Modification of the open-hearth furnace with air cooling of the roof and heads - Google Patents

Description

In patent No. 5092, it is assumed to produce outside air in a marthenic furnace of the cooled vault and annivers by external air by means of fans, with regulation of the amount of air supplied to various parts of the furnace.

In the proposed modification of the above invention, in addition to the existing air cooling of the roof and heads, water cooling is used by means of metal open in the top and bottom of the masonry, in which a water funnel is injected into the pipe, which is discharged under the drawers pipes. . In FIG. 1 shows a longitudinal section of a furnace with air and water 1) BS (right side) cooling; FIG. 2 is a view of three projections of metal boxes for water cooling; FIG. 3-cross-section of the furnace; FIG. 4- section of the furnace zo to air (upper half) and gas (lower half) channels; FIG. o-view, in three projections of a modified box for water cooling: right to project a side view of the box; left - view from above; the right part of the average projection is a view along the axis of the furnace; left - a section along the line 1t on zr. four.

The cooling air is moving (Fig. 1}

along the furnace roof from its middle towards the heads, and also sucked from below (but can also be pumped from above) into chambers 5 and 15 and removed through pipes 4 and fans 3 cooling the arch of the smelting space, arches of the furnace heads and walls inside, cameras o and 1st. On the right side of FIG. 1, a picture of a water-cooled head cooling, applied in addition to air cooling. For the purpose of its implementation, metal boxes 6 (riveted from sheets or readings), shown separately in Figs. 2 in three projects. For durability, the boxes are provided with transverse partitions 8. In each box there is a pipe 7 (Fig. 1, 2 and: 3), supplying cooling water that was sprayed through the holes 10 splashed onto the inside walls of the box and thus cooling them. Downward water enters the funnel 9, equipped with a drain pipe. The cooling air is sucked into the box 6 from below, as shown by the arrows in FIG. 1, while its amount is regulated by closing the lower part of the box with a special valve, leaving a sufficient opening for water flow. This will allow almost the entire mass of cooling air to pass.

vaults for cooling them, whereas the vertical walls of the heads will be cooled with water by means of boxes 6, for supplying water to which the pipe 7 serves. The form of the boxes may be liquid, h; i see in fig. 2. So, in FIG. 5 shows the shape of the cooling box, exactly corresponding to the shape of the cooling chambers 5 between the channels of the heads. The lower part of the box has a rectangular cross-section abed (Fig. 4), and the top is a more folded section of aefb (Fig. 4), which corresponds to the upper extended part of the box 17 (Fig. 5). The crate is provided with baffles 8 for durability. In addition to the main part of crate 6, there are two more pipes 16 that open into the upper part of crate 17 and serve to cool the walls of chambers 15 (Fig. 4) between the vertical parts of the air channels and the inclined parts gas. Water is sprayed onto the walls of the crate, as in FIG. 2, and flows down the walls to &, to its central part 6 (Fig. 5), and along the walls of the nozzles 16 into a common funnel 9 (Fig. 1). With the box shown in FIG. 5, part of the arches of the gas channels inside the chambers 5 is overlapped by chin 6, for which purpose the corresponding machine tools are curved (in part 17) exactly along the radii of the arches. If it is impossible to install separate standing gas and air channels 11.11 (due to the tightness of their location caused by the system of gas-air windows of the furnace), boxes 6 allow for the installation of cooling after-tubes 12 (Fig. 1, 2 and 3), 11 for wall cooling. - arches between the air and gas channels in the horizontal direction. For this purpose, horizontal chambers 11 (Figs. 1 and 4) are left in the marked places of the masonry, into which the tubes 12, which have plug-in funnels 13 in their upper parts, are screwed in (opening) into the chutes 6. The cooling water through tubes 18 supplied with taps 14 through funnels 13 into tubes 12 and, flowing through them into boxes 6, cools the walls of the masonry c. horizontal chambers 11 (Fig. 1 and 4). At the same time, the space between the tubes 12 and the walls of the chambers C, into which these tubes are inserted, can be filled with fine refractory material or its dough; water pressure in the tubes does not exceed atmospheric. Stopping the flow of water from the tubes 18. Using taps 14 in the funnel 13, you can. get only one air cooling of the tubes 12, since the air is sucked in by the fans 3 into each tube 1. Any tube 12 can be turned out of the box 6 and replaced with a new one. The tubes 12 are cooled simultaneously with both water and sucked air. If there are boxes 6 shown in FIG. 5, where a part of the arches of the gas channels inside the chambers 5 are cooled by the walls of the boxes, it is enough to have less 4 pipes 12, group them in the front part of the boxes closer to the furnace's melting space. The amount of water poured into the tubes 12 (through the funnels 13) may not be large, but sufficient to wet the inner walls of the tubes. On the lower and left projections of FIG. 2 shows only part of the tubes 12, the rest are unscrewed. Instead of tubes 12, nozzles 12 can be used, with a cross section of their exact corresponding.-Sections of chambers 11 (Fig. 1) and attached on both sides to the box 6 in a slightly inclined position (for water flow). Consequently, boxes 6 will have two tubes 12 each, instead of tubes 12, arranged in the same way as tubes 12 (Figs. 1, 2 and 3). These nozzles will resemble nozzles 16 (fig, o), only their arrangement will be horizontal and the movement of cooling water and its action will be the same as in boxes 6 (or tubes 12), i.e. without overpressure above atmospheric (and with intake air). The presence of tubes (patrbkov) 12 will improve the cooling of the furnace heads with the constrained dislocation of the gas-air channels.

The subject of the patent.

A modification of the air-cooled open-hearth furnace furnace and heads described in patent No. 5092, characterized in that, in order to water the gopovks, besides the existing air, in the masonry of the heads, there are metal open up and down holes inside which are cooled by water injected boxes 6, for supplying water to which the pipes 7 serve, and for diverting the water-funnel 9 located under the boxes 6.