SU1044646A1 - Convector ring for hood furnace - Google Patents

Abstract

1. CONVECTOR RING FOR THE COLLAR OVEN, including two parallel supporting discs of the four-way, stiffening ribs, spaced radially between the disks and forming channels extending to the periphery of the mine, in order to improve the organization of the movement of the heating medium a convector ring, in each channel, two plates are installed on its entire width, adjacent to opposite disks and laid parallel to each other with a gap between them and at an acute angle § to the supporting disks, n and this plate, the length in a direction perpendicular (X their planes overlap each other.

Description

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2. The ring according to claim 1, about a hl and u-waves in two adjacent channels prileash e e with the fact that the corresponding opposite to the reference

along the course of the heating plate | discs.

1044646

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The invention relates to metallurgy and mechanical engineering and ms ket to be used in the heat treatment of rolls of sheet metal from ferrous and non-ferrous metals and alloys in coppack heating furnaces.

The known design of convection rings of bell-type furnaces for annealing coils, which consists of two disks with holes and spiral channels, 1 is brazovannyh parabolic curved partitions. Copea discs are made in the depths of each spiral channel of Cl 3

The disadvantage of this design is a significant aerodynamic drag of the scab, which causes an excess of electric power to drive the precursors of the heating medium circulation.

Closest to the proposed technical entity is a convector ring for a coppack furnace, which includes two parallel supporting discs with holes, stiffening ribs placed radially between the discs and forming channels C 23 expanding to the periphery of the disc.

A disadvantage of the known construction is the low heat transfer from the heating medium circulating in the underfurniture space of the furnace to the ends of the roll. This is due to the fact that the known ring n ensures efficient circulation of the medium in the channels.

The purpose of the invention is to improve the organization of the movement of the heating medium in the convector tube.

A permanent goal is achieved by: then in a convector ring for a bell furnace, including two parallel pore disks with holes, stiffeners placed radially between the suits and forming channels extending to the periphery of the disk for passage of the heating medium, in each channel for its entire width set by two

the plates lie adjacent to the opposite discs and are parallel to each other with a gap between them and a sharp angle to the supporting discs, with the plates along the length perpendicular to their plane. cos m, cross each other.

Corresponding along the movement of the heating medium plates in two with sedentary channels adjacent to the opposite

. support disks.

FIG. 1 shows a convective hoof in the plan, a general view, in FIG. 2, section A-A in FIG. one; in fig. 3 cross-vector ring with support sites in the plan; in fig. 4 shows a section BB in FIG. 3

The convector ring of two parallel supporting discs 1 and 2 with holes 3 (in Figs. 3 and 4, the discs are replaced by

the individual support points) contain stiffening ribs 4, forming in plan the sectors 5 and the channels for the passage of protective gas formed by the plates 6-9. Plates 6 and 7, as well as 8 and 9

are opposed parallel to each other with a gap 10 between them and overlap in length. The plates of two adjacent sectors (Figs. 2 and 4) are located at opposite angles, i.e. Corresponding to the course of the heating, the plate medium in two channels

| Adjacent to the opposite support discs. (Rolls of metal located on both sides of the convective ring are shown by dot-and-dash lines and are indicated by positions 11 and 12. The path of the heating medium is shown by arrows in Figs. 2 and 4).

The convector ring works as follows. A stove oven fan (not shown) along an axial channel formed by the openings of the coils / creates a negative protective gas heating

environment. At the same time, heated gas flows through convector rings from the periphery of the coils to their axis. Due to the plates installed in a certain way, the gas travels along a 1. -shaped trajectory, and in the channel formed by plates 6 and 7, at the beginning of a hot gas, the end of the coil is first. 12, and then the roll of the il il. The channel formed by plastids 8 and 9 is first washed by the end of the roll 11 a 3, then the end of the roll 12, which ensures that the ends of the rolls are more uniform along the entire circumference. The overlap of the plates and their attachment to the stiffeners contribute to the washing of the entire surface of the mountaineers of both rolls that are in contact with the surface ridge. In order to improve the heating of the rolls, the support surfaces can be removed from individual elements (Fig. 3 and 4) or, if there is no danger of seeing the edges of the roll (thick metal), the support surfaces can be formed by a combination of end faces of the stiffeners connected plates. The proposed convector ring design provides for the movement of the heating medium along the Z-shaped TpaeKfopini, while the gas path in contact with the ends of the rolls is approximately doubled. Such an organization of the movement of the heating medium makes it possible to increase the uniformity of the heating of the ends of the rolls of the metal being processed, which ultimately will increase the efficiency of the work. .12

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Claims (2)

1. CONVECTOR RING FOR A CAP FURNACE, comprising two parallel supporting disks with holes ·, stiffeners located radially between the disks and forming channels expanding to the periphery of the disk for the passage of the heating medium, characterized in that, in order to improve the organization of movement of the heating medium in the convector ring, each channel over its entire width is equipped with two plates adjacent to opposite disks and located parallel to each other with a gap between each other and at an acute angle to the supporting disks, while the plates. § along the length in the direction perpendicular to their planes overlap each other. 2. A ring according to claim. ^ Characterized in that the plates corresponding in the direction of movement of the heating medium in two adjacent channels adhere to opposite supporting | disks.