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1. WO1980000424 - INSTALLATION FOR FLARING TUBES BY ELECTRO-IMPULSION

Publication Number WO/1980/000424
Publication Date 20.03.1980
International Application No. PCT/SU1979/000067
International Filing Date 21.08.1979
IPC
B21D 26/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
26Shaping without cutting otherwise than by using rigid devices or tools or yieldable or resilient pads, e.g. shaping by applying fluid pressure or magnetic forces
02by applying fluid pressure
06by shock waves
12initiated by spark discharge
B21D 39/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
39Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
06of tubes in openings, e.g. rolling-in
CPC
B21D 26/12
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
26Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
02by applying fluid pressure
06by shock waves
12initiated by spark discharge
B21D 39/066
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
39Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating
06of tubes in openings, e.g. rolling-in
066using explosives
Applicants
Inventors
Priority Data
265439622.08.1978SU
Publication Language Russian (RU)
Filing Language Russian (RU)
Designated States
Title
(EN) INSTALLATION FOR FLARING TUBES BY ELECTRO-IMPULSION
(FR) INSTALLATION D"EVASEMENT DES TUBES PAR ELECTRO-IMPULSION
Abstract
(EN)
An installation for flaring tubes by electro-impulsion comprises a bed (1), vertical (2) and horizontal (10) guides, means for power supply to electroexplosive cartridges (3), a generator (5) of current impulses and a control system (17). The means for supplying power to the electroexplosive cartridges (3) represents in itself a multielectrode system, which provides for flaring out a plurality of tubes with a single current impulse. For conveniently adjusting the spark gap between the electrodes (4) these are mounted on hinged protective screens (7) so that they may be angularly displaced and secured. The installation is provided with mechanisms (24), (11), (18) for rotation of a bundle (38) of the tubes, for vertical displacement of the power supply means to the electroexplosive cartridges (3) and for horizontal displacement of the vertical guide (2), those mechanisms comprising pitch setting elements, connected, through the control system (17), to the generator (5) of current impulses. On the signal by the said elements, after a programmed displacement of the power supply means and/or after a rotation of the bundle (38) of tubes, the generator (5) gives a current impulse to the electroexplosive cartridges (3). The presence of the elements, setting the pitch of displacement of the power supply means permits, without complicated readjustments, to flare tubes with their butt-ends assembled in rows, circles and spirals.
(FR)
Une installation d"evasement de tubes par electro-impulsion comprend un lit (1), un guide vertical (2) et des guides horizontaux (10), des moyens d"alimentation de puissance a des cartouches electro-explosives (3), un generateur (5) d"impulsion de courant et un systeme de commande (17). Les moyens d"alimentation de puissance aux cartouches electro-explosives (3) forment un systeme a multi-electrodes qui effectue l"evasement d"une pluralite de tubes avec une seule impulsion de courant. Pour regler convenablement l"ouverture d"etincelles entre les electrodes (4), elles sont montees sur des ecrans protecteurs articules (7) de sorte qu"elles peuvent etre deplacees et fixees angulairement. L"installation comprend des mecanismes (24, 11, 18) pour faire tourner un faisceau (38) de tubes, pour assurer le deplacement vertical des moyens d"alimentation de puissance vers les cartouches electro-explosives (3) et pour assurer le deplacement horizontal du guide vertical (2), ces mecanismes comprenant des elements de reglage d"elevation, relies par l"intermediaire du systeme de commande (17) au generateur (5) d"impulsion de courant. Suite a un signal produit par ces elements, apres un deplacement programme des moyens d"alimentation de puissance et/ou apres rotation du faisceau (38) de tubes, le generateur (5) envoie une impulsion de courant aux cartouches electro-explosives (3). La presence des elements qui ajustent la hauteur du deplacement des moyens d"alimentation de puissance permet sans reglage complique d"evaser les tubes avec leurs extremites assemblees a la fois en rangees, cercles et spirales.
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