SU933716A2 - Device for gas sampling from blast furnace - Google Patents

Description

(54) DEVICE FOR THE SELECTION OF SAMPLES OF GAS IN THE DOMAIN

FURNACES

The invention relates to ferrous metallurgy, in particular, to facilities for the selection of gas for analysis from shaft furnaces, of course, blast furnaces. A device for sampling ha per avt.Sv is known. M 681097, which is the closest to the invention according to the technical essence of ICE. A disadvantage of the known device is the following. In order to ensure sampling of a GB1 device with such a device, the probe’s end point is introduced at the first sampling point, over a distance of more than one meter, so that the reverse movement of the tip to this point will ensure that the cylindrical valve moves from one extreme position to the other and thus opens gas inlet. Moving the probe to the first gas sampling point and returning it back to this point causes additional energy costs, leads to an increase in gas sampling time and reduces the life of the probe, as the gas channel of the probe and the gas discharge part of the system clog after one or more the bore size is more than 5 mm, then large pieces of the charge are chioused through it. All this does not provide further operation of the probe. The purpose of the invention is to increase the operability and avoid clogging of gas-luar channels. This goal is achieved by the fact that gaseous channels with a ratio of width to length t, 0-0.008 and round channels with a diameter equal to the width of the grooves, located relative to each other in a staggered manner, are made on the cylindrical part of the tip in the gas sampling device. the hollow cap is made round channels with a slope of 15-60 to the axis of the tip in one or several rows. The choice of shapes and sizes of gas inlets is determined by different sizes of charge to exclude them aasoren,:

Selecting the angles of the axes gaaohfiemnyh holes 15 to Bo obuslavlivaets that great movement zotstsa in the shaft of the resistance to charge (reaction force) nagfavlevo opposite movement zovda and raaoigjaeMHbie apertures whose axes perpeshvkup SHL conical surface kroiki, aak5Ch1orivayuts particles charge With respect and length OTBqpc The rest of the tip 1, O-0, OO8 provides for the passage of gas and the purity of the charge grains.

The proposed technical solution provides reliable out-of-flight testing of the system for 1fold intermittently for a long time, energy consumption is reduced by eliminating the additional movement of the probes and their service life is increased.

On fng. 1 shows a probe, bypassing the VIEW} at 4 r r. 2 shows section A-A in FIG. I.

The call for OT6qpa 15306 gas includes a tip 1 with an aperture gas 2 and 3 connected to the cavity 4 of the tip. On the surface of the tip 1, there is an air damper 5, the ends of which are provided with shoulders 6 and 7. The tip of the tip is fixed with a cone-shaped lid 8 having a cavity 9 and a vent hole 10 and I. Zo p works as follows.

When inserting the probe to the center of the furnace shaft, installed on the surface of the lug 1, the cylindrical Valve 5 under the influence of the forces of the traces between the batch and the shoulders 6 and 7 shifts by the magnitude of the stroke fl of the valve and intersects the gas ports 2, thus the gas ports 3 from 1 v. - For 1H) and the tip of the probe to the first point of the gae through the bridge 3 and through the holes 10 "11 of the cone-shaped cover 8, it starts in cavities 4 and 9,

and then enters the cavity 4; the nozzles are transported to a gas collection and analysis point. This gas heating 2 is protected from being procured by the charge particles by a cylindrical valve 5. After the gas 0e is taken out of the first point, the tip of the call is transferred to another point by passing through the switch in the OFAT direction, to the laying of the furnace. In this case, the cylindrical 5 moves to another position, opening% and this row of openings 2, free from particles of the charge. The use of the invention makes it possible to reduce the energy consumption for the selection of 1 phob of gas, saving time on the gas and thereby increasing the service life of the calls from 1 to 4 months, i.e. 4 times.

Claims (1)

Invention Formula Device for the selection of fob gas in a blast furnace according to ed. St. Kf 681О97, characterized in that, in order to increase 1} efficiency 0 to avoid clogging of gas intake channels, gaseous channels / ratio w {fin to length 1, O-O, O08 and channels with a diameter equal to the grooves are made relative to each other in a checkerboard pattern (dke, and in a conical hollow 1f1) & e Round channels with an inclination of IS-eO to the tip axis in one or several rows are made. Sources of information, 1f8N tyee into account during the examination 1. USSR author's certificate M 681O97, cl. From 21 to 7/24, 1977.