SU1343567A1 - Electrode assembly with gas-dynamic device for electrode sealing - Google Patents

Abstract

The invention relates to electrical engineering. The aim of the invention is to improve the reliability of the device. The gas-dynamic chamber is equipped with an outlet nozzle 13, has a variable cross-section and is formed by two concentric shells 4 and 5, of which is internally perforated in the lower part, with the holes in the air collector at an angle to the electrode. 3 il. gv figure 1

Description

one

The invention relates to electrothermal and can be used in the design of gas-dynamic devices for sealing electrodes of electric furnaces.

The purpose of the invention is to increase the efficiency of the seal.

. 1 shows the electrode assembly, section; in fig. 2 - the same, top view; in fig. 3 - connection of water and air collectors with sealing shells.

Structurally, the gas-dynamic seal is a body, the lower base of which is the water 1 and air 2 collectors, the upper base being the water collector 3, mounted obliquely to

thirty

electrode axis. The lower 1 and 2 and upper 20 suction of the furnace through the pipe 14. The cooling-3 bases are connected by an inner shell 4, perforated in the lower part around the perimeter and an outer shaped shell 5, the melody shells 4 and 5 form an annular channel 25 in the axial section variable cross section consisting of three parts of a diffuser 6, a mixing tube 7 and a confuser 8,

The lower water collector 1 has a supply pipe 9 and is connected to the upper collector 3 by a pipe 10. The upper water collector 3 has a discharge pipe 11. The air collector 2 is connected to the workshop pneumatic system by a pipe 12, has a hole 13 in whole perimeter, playing the role of nozzles directed at an angle of 25-45 to the axis of the electrode and feeding compressed air to the mixing tube 7. Insert the indicated annular channel ends with a pipe 14 with a flange 15 for venting the gas-air mixture to the gas outlet of the furnace.

Installation of air collector nozzles at an angle of 25-45

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40

the fact that at the corners.

due to less than 25 and

45

the supplying water from the workshop line is supplied to the device through pipe 9, then through the lower collector 1 goes in both directions, then through pipe 10 enters the upper collector 3. Pass through collector 3, the water goes to drain through pipe 11. Thus, the air collector 2 is cooled and the lower and upper parts of the outer 5 and inner 4 shells.

In comparison with the known, the proposed device allows to increase the sealing efficiency, i.e. practically exclude the access of furnace gases to the shop atmosphere. The effectiveness of compaction is enhanced by the design of the gas-dynamic chamber, which allows the use of the ejection effect. In addition, the proposed device removes gases j generated during the smelting process j and thus prevents pollution of the surrounding atmosphere.

Claims (1)

Invention Formula An electrode assembly with a gas-dynamic device for sealing the electrode, comprising a gas-dynamic chamber enclosing the electrode, with a large outlet 4B, suction efficiency, and. consequently, the compaction also drops sharply due to the impact of the compressed air with shells. The upper base is an I-Q spigot, formed by two But the camera is tilted to the axis of the electrode in order to reduce losses to local resistance. The inclination of the upper base goes down from the side of the branch pipe at an angle. The gas-dynamic device works as follows. Compressed air from the shop system enters the pipe 12, then 43567 - 2 the collector 2 is fed to both sides around the body, from which through the holes 13, evenly spaced around the perimeter of the collector 2, enters the mixing tube 6 (ring), where the flow rate increases dramatically and the pressure drops below atmospheric, i.e. an ejection effect occurs. 10 Furnace gases from the annular gap of the electrode - hole in the roof rush through the perforations in the inner shell 4 to the low pressure region, i.e. In channels 5, 6 and 8 of variable cross section, through the gap electrode - the inner shell 4, atmospheric air is drawn in from the workshop, thereby preventing gases from escaping into the workshop and allowing gas to escape. the suction of the furnace through the pipe 14. Cooling the supplying water from the workshop line is supplied to the device through pipe 9, then through the lower collector 1 goes in both directions, then through pipe 10 enters the upper collector 3. Pass through collector 3, the water goes to drain through pipe 11. Thus, the air collector 2 is cooled and the lower and upper parts of the outer 5 and inner 4 shells. In comparison with the known, the proposed device allows to increase the sealing efficiency, i.e. practically exclude the access of furnace gases to the shop atmosphere. The effectiveness of compaction is enhanced by the design of the gas-dynamic chamber, which allows the use of the ejection effect. In addition, the proposed device removes gases j generated during the smelting process j and thus prevents pollution of the surrounding atmosphere. Invention Formula An electrode unit with a gas-dynamic device for sealing the electrode, containing a gas-dynamic chamber enclosing the electrode with a tap of concentric shells connected from above by a water collector, the inner shell is perforated in the lower part, and the outer shell gg is bottom-fitted with water and air collectors attached to it nozzles, characterized in that, in order to increase the efficiency of compaction, the gas-dynamic 31343567 the camera is made in the form of an annular clone to the axis of the electrode. airless collector eg at an angle to the axis of the electro the ejector, the upper collector serves as the upper base and is set obliquely to the axis of the electrode. and the air manifold nozzles are directed upwards at an angle to the axis of the electrode. FIG. g / 4 tmosfern1i Cfnam & m VOS Ovens & (