CS257703B1 - Method of obtaining non-ferrous metals by burning turbine rotors - Google Patents

Abstract

The solution concerns the separation of non-ferrous metals, copper conductors and bronze peripheral rods from the steel parts of discarded rotors of turbogenerators using autogenous cutting instead of mechanical disassembly. After removing the hoops and the overhanging peripheral rod, the protrusions and peripheral rods are gradually blasted and removed using perpendicular and longitudinal or oblique cuts, and the protrusion and peripheral rods are removed from the resulting continuous cavity after an oblique cut under the conductor. This exposes the conductor, blasts it in the central and peripheral parts of the rotor and removes it, after which the entire cycle of oblique cuts and gradual stripping, blasting and removal of the conductor is repeated. It is expected to be used where discarded rotors are dismantled for scrapping, for example in the energy industry, repair shops and scrap metal organizations.

Description

BACKGROUND OF THE INVENTION The present invention relates to a process for obtaining non-ferrous metals by sequentially burning an autogenous rotor of a turbine generator.

Until now, non-ferrous metals are obtained from discarded turbine generator rotors, ie copper conductor and bronze perimeter rods, by classical dismantling of perimeter rods and conductors from rotor grooves. The disadvantage of this method of separating non-ferrous metals from the steel part of the rotor is the laborious dismantling, which is carried out by qualified personnel by special techniques.

This is associated with high dismantling costs.

These disadvantages are substantially mitigated by the method of obtaining non-ferrous metals by gradually burning the rotors of the turbo-generators free of the hoops of the overhanging peripheral bars according to the invention.

It is based on the fact that the overhanging peripheral rod is disassembled in a section not fitted with a conductor, and then it is detonated in perpendicular, longitudinal or oblique cuts and releases the burnouts of the projections and the peripheral rods. In this way, an enlarged continuous cavity is formed, from which a protrusion and peripheral rods are then removed after oblique cutting under the conductor.

Then, the exposed conductor is gradually detonated in the central and peripheral portions of the rotor.

This expands the running cavity, whereupon the whole cycle of oblique cuts under the conductor is repeated. In doing so, they gradually expose, detonate and remove parts of the conductor. In the cavities not fitted with the conductor, the protrusions are fired successively by an oblique cut and together they are removed with the peripheral rods and subsequent cyclic cuts are fired, exposed and removed with the protrusions of the conductor and the peripheral rods of the other half of the rotor. The protrusions can be detonated from the formed continuous cavities by oblique cut to the lower corner of the peripheral rod and taken together with the peripheral rods.

The advantage of the method of obtaining non-ferrous metals by gradual burning of the rotors of the turbo-generators according to the invention is in less labor, using less skilled workers and in substantially faster completion of the task.

In order to illustrate the progress of the work more clearly and to clarify the individual terms, drawings are drawn of sections of the rotor in cross-section, where in Fig. 1 an extended continuous cavity formed by an autogenous section with the cut stillage and peripheral rods is drawn. Fig. 2 shows the formation of an expanded continuous cavity again in the cavity of an unpopulated conductor with a stillage and a peripheral rod.

Giant. 3 shows the projection of the projection and a cross-section of the projection under the conductor to its extension. Fig. 4 is a sectional view of a protuberance with cut shapes and peripheral rods removed.

£ rotor body without antimagnetic rim end faces of a copper conductor 2 has at its periphery a continuous cavity 10 unpopulated conductor, separated from each other protrusions 2. Continuous cavities 9 fitted conductor 2 are covered with bronze circumferential rods 2 ^{and the} continuous cavity 10 of the conductor 2 antimagnetickými unoccupied peripheral rods 11 In the case of non-ferrous metals with successive perpendicular and longitudinal or oblique autogenous cuts 6, the stillage 6 of the protrusions 2 and the peripheral rods 11 are inserted to form an expanded continuous cavity 4. Copper wire 2 is removed in stages after autogenic oblique slices £ protrusions 2 below conductor 2 · continuous ^from the enlarged cavity is then £ £ circumferential rods are removed from the rotor body the inclined autogenous £ £ sectional protrusions 2 extending along the bottom corner of the peripheral rods £. The protrusions 2 and the conductor 2 of the peripheral rod 3, 11 of the second half of the rotor 6 are separated and removed by means of autogenous cuts 6.

The method can be carried out, for example, by an oxy-acetylene or oxy-propane firing device by first removing the axial fans and the antimagnetic hoops of the copper conductor ends to secure the rotor circumferential rods from being released from the turbine generator rotor. by autogenous firing. The peripheral rod abutting to the non-conducting cavity is then removed, then the perpendicular and longitudinal or oblique cuts of the autogenous incisor are gradually detonated, released and removed, and the burnouts of the protuberances and peripheral rods are formed, thereby forming a continuous cavity. A protrusion and circumferential bars are removed from this continuous cavity after an oblique cut under the conductor, thereby exposing the conductor. This is gradually detonated in the middle and peripheral parts and gradually removed from the rotor.

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The through cavity is thereby widened, whereupon the cycle of stripping and removing the conductor, the protrusions and the peripheral rods is repeated up to the central full part of the rotor. In the cavities of the second half of the rotor not fitted with the conductors, the protrusions are fired gradually by oblique cut and are removed simultaneously with the peripheral rods, after which the cycles of firing and removal of the protrusions, the conductor and the peripheral rods are repeated on the second half. After the formation of the expanded continuous cavities, subsequent protruding cuts are fired at the lower corner of the peripheral rod and the protrusions and the peripheral rods are removed.

The process of obtaining non-ferrous metals by gradual burning of the rotors of the turbine generators according to the invention can be used in all rotor decommissioning organizations, for example in steam power stations, generator repair companies or scrap metal management organizations.

Claims (2)

SUBJECT OF THE INVENTION A method for obtaining non-ferrous metals by successive firing of turbine generators rotated from the hoops of overhanging peripheral rods, characterized in that the overhanging peripheral rod is disassembled in a section not fitted with a conductor, and then an expanded continuous cavity is formed from which the protrusion and circumferential bars are removed from the oblique cut below the wire, then the exposed conductor is gradually detonated in the central and peripheral portions of the rotor, thereby expanding the continuous cavity and repeating the entire oblique cut cycle. are gradually exposed by detaching and removing portions of the conductor, and in cavities not fitted with the conductor, the protrusions are fired gradually by oblique cut and are removed together with the peripheral rods. Method according to claim 1, characterized in that protrusions are fired from the formed continuous cavity with an oblique cut to the lower corner of the peripheral rod and taken together with the peripheral rods.