SU1239497A1 - Electric resistor furnace arch - Google Patents

Description

The invention relates to the field of electrothermal, and more particularly to a device for the arch of an electric resistance furnace with V-shaped heating elements.

The purpose of the invention is to reduce the material intensity of the vault.

Figure 1 shows the electric furnace arch, a vertical section; FIG. 2 shows a section A-A in FIG. 1 in FIG. 3-5 - style- nozzles of various designs.

The electrical resistance log contains a metal casing 1 with lining 2 from a refractory layer: 3 and a thermal insulation layer 4. In the fittings 5 placed in the thermal insulation layer 4 of lining 2, heating elements 6 of a V-shaped molybdenum disilicide are installed using clamps 7.

Holders 8 are mounted on the nozzle-shaped nozzles 5. Supporting elements 9 for the holders 8 are mounted on a metal casing 1. Holders 8 can be made in the form of beams 10. In the shaped nozzles 5, holes 11 can be made for the holders 8 or transverse cuts 12 A gap 13 is provided between the nozzle 5 and the refractory layer 3 of the lining 2, filled with a fibrous thermal insulation material with high elasticity, such as heat insulation wool.

The nozzle 5 can be made with the holder 14 in the form of a T-shaped extension.: The fitting nozzle is mounted

in the following way.

The nozzle 5 is inserted into the corresponding sockets in the lining 2 of the resistance electric furnace so that the holder 8 lies on

supporting element 9. The shape-nozzle weight 5 by a V-shaped heating element 6 is transferred from molybdenum disilicide to a metal casing 1, as a result of which the refractory portion of the roof is unloaded. The expansion of the roof lining when the furnace is heated is compensated for by the presence. gap 13, filled with insulating material, which also relieves the arch from loads.

In the proposed technical solution, the release of the body from the impact of weight of the nozzles entails the possibility of making the lining of lightweight refractory and thermal insulation materials with lower thermal conductivity and reducing the thickness of the lining layers, which reduces the material intensity of the body,

electric furnace productivity increases and electrical losses are reduced. In addition, there is no need to install refractory support bricks in the furnace working space.

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Compiled by S.Prkova Editor N.Tupitsa Tehred O.Gortvay Proofreader E.Sirohman

Order 3383/38 Circulation 561 Subscription VNIIPI USSR State Committee

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

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

Claims (2)

1. RESULTS OF THE RESISTANCE ELECTRIC FURNACE, containing a metal casing with a lining and placed in the last shaped nozzle with heating elements installed in them **. m V-shaped, characterized in that, in order to reduce the material consumption of the arch, it is equipped with holders mounted on shaped nozzles, and supporting elements. under them, mounted on the casing. 2. The body according to claim 1, characterized in that the holders are made in the form of beams, and the shaped nozzles have openings for the passage of the holders. g A ~ Ί —I ⁴ Phag. G <„SU„ „1239497 1 1239497