[go: up one dir, main page]

DE390811C - Electric welding or heating machine for three-phase networks with two secondary heating points - Google Patents

Electric welding or heating machine for three-phase networks with two secondary heating points

Info

Publication number
DE390811C
DE390811C DEM73990D DEM0073990D DE390811C DE 390811 C DE390811 C DE 390811C DE M73990 D DEM73990 D DE M73990D DE M0073990 D DEM0073990 D DE M0073990D DE 390811 C DE390811 C DE 390811C
Authority
DE
Germany
Prior art keywords
heating
phase
electric welding
points
phase networks
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEM73990D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MASCHB ANSTALT MOLL AKT GES
Original Assignee
MASCHB ANSTALT MOLL AKT GES
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MASCHB ANSTALT MOLL AKT GES filed Critical MASCHB ANSTALT MOLL AKT GES
Priority to DEM73990D priority Critical patent/DE390811C/en
Application granted granted Critical
Publication of DE390811C publication Critical patent/DE390811C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00Resistance welding; Severing by resistance heating
    • B23K11/24Electric supply or control circuits therefor
    • B23K11/241Electric supplies
    • B23K11/243Multiple welding installations fed by one source

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Induction Heating (AREA)

Description

Der direkte Anschluß von elektrischen Schweiß- bzw. Erhitzmaschinen an ein Drehstromnetz, gibt zu erheblichen Störungen Anlaß, weil die einzelnen Phasen sehr ungleich und dazu noch stoßweise belastet werden. Es sind deshalb schon von verschiedener Seite Vorschläge gemacht worden, mit Hilfe von Dreiphasentransformatoren, durch die drei Erhitzungsstellen gleichzeitig gespeist werden, eine gleichmäßige Verteilung der Belastung auf die drei Phasen herbeizuführen.The direct connection of electrical welding or heating machines to a three-phase network, gives rise to considerable disturbances because the individual phases are very unequal and are also loaded in spurts. It is therefore from different sides Proposals have been made, with the help of three-phase transformers, through the three Heating points are fed at the same time, an even distribution of the load to bring about the three phases.

Weiterhin bekannt sind elektrische Schweißmaschinen mit primärseitigem Anschluß von zwei Arbeitsstellen ^an ein Drehstromnetz unter Benutzung der Scottschen Schaltung.Also known are electrical welding machines with a primary-side connection of two jobs ^ on a three-phase network using Scott's circuit.

Während jedoch bei den bekannten Einrichtungen die sekundärseitige Belastung vollkommen gleichmäßig ist, wird gemäß der Erfindung besonderer Nachdruck auf die vollständige Unabhängigkeit der sekundären Erhitzufligsstellen voneinander gelegt, so daß man beispielsweise in der Lage ist, durch entsprechende Einstellung der Spannungsstufen auf einer Erhrtzungsstelle schwache Bolzen zu erhitzen, während man gleichzeitig auf der anderen Erhitzungsstelle stärkere Bolzen erhitzen kann.However, while in the known devices, the secondary-side load is complete is uniform, according to the invention particular emphasis is placed on the complete Independence of the secondary heating points from one another, so that you are able, for example, by setting the voltage levels accordingly to heat weak bolts on a hot spot while simultaneously on the other heating point can heat stronger bolts.

Auf der Zeichnung ist die neue Anordnung schematisch dargestellt. P1 und P2 sind die beiden Primärspulen der EinphasentransformatorenT! und T2, die in- der Weise an das Drehstromnetz angeschlossen sind, däß die Phase W unter Vermittlung des Reguiierorgans R1 an dem einen Polende der Primärspule-P1 anliegt. Das zweite Ende dieser Primärspule führt zur Mitte oder einem geeigneten anderen Punkte der Priniärspule P2. Das eine freie Ende der Primärspule P2 liegt unter Vermittlung des Regulierorgans R2 an der Phase V an, wähf end das zweite Ende von P2 unter Vermittlung des, Regulierorgans R2 an die Phase U angeschlossen ist. Die Sekund'ärspulen S1 und S2 sind in bekannter Weise den Primärspulen P1 und P2 zugeordnet; sie versorgen die beiden Erhitzungsstellen I und II.The new arrangement is shown schematically in the drawing. P 1 and P 2 are the two primary coils of the single-phase transformers T! and T 2 , which are connected to the three-phase network in such a way that phase W is applied to one pole end of the primary coil P 1 through the intermediary of the regulator R 1. The second end of this primary coil leads to the center or another suitable point of the primary coil P 2 . One free end of the primary coil P 2 is connected to the phase V through the intermediary of the regulating element R 2 , while the second end of P 2 is connected to the phase U through the intermediary of the regulating element R 2. The secondary coils S 1 and S 2 are assigned to the primary coils P 1 and P 2 in a known manner; they supply the two heating points I and II.

Die Anordnung kann unter Umständen vereinfacht werden, nämlich dann, wenn normalerweise eine Arbeitsstelle eine höhere Schweißspannung zugeführt erhalten soll als die andere. In diesem Falle braucht nur in eine Phase der Primärwicklung ein Regulierwiderstand bzw. eine regelbare Drosselspule eingebaut zu werden, der zur Verminderung der Erhitzvoreilung an der einen Arbeitsstelle genügt. In der Schaltung nach der Zeichnung würde dann also etwa' nur die Phase W unter Vermittlung eines Regulierorgans an die Primärspule P1 angeschlossen zu sein brauchen, während die Phasen V und U direkt an den Polenden ,der Primärspule Ρ, anliegen. Bei einfachster Handhabung würde dann eine genaue Abgleichung der Erhitzungs- bzw. der Schweißdauer der beiden Arbeitsstücke erreicht werden'.The arrangement can be simplified under certain circumstances, namely when normally one job is to receive a higher welding voltage than the other. In this case, a regulating resistor or an adjustable choke coil only needs to be installed in one phase of the primary winding, which is sufficient to reduce the heating advance at one job. In the circuit according to the drawing, only the phase W would then need to be connected to the primary coil P 1 through the intermediary of a regulating element, while the phases V and U are applied directly to the pole ends, the primary coil Ρ. With the simplest handling, an exact comparison of the heating or welding duration of the two workpieces would then be achieved '.

Claims (2)

Patent-Ansprache:Patent address: i. Elektrische Schweiße bzw. Erhitzmaschine für Drehstromnetze mit zwei •sekundären Erhitzungsstellen, dadurch gekennzeichnet, daß die nach der Scottschen Schaltung in Stern verbundenen Primär- as wicklungen in jeder Phase einen Regulierwiderstand bzw. eine regelbare Drosselspule besitzen, mit denen Hilfe die den einzelnen Arbeitsstellen zugeführten Spannungen unabhängig voneinander reguliert werden können.i. Electric welding or heating machine for three-phase networks with two • secondary heating points, characterized by that the primary as connected in a star according to Scott's circuit windings in each phase a regulating resistor or an adjustable choke coil own, with which the help of the voltages supplied to the individual jobs can be regulated independently of each other. 2. Abänderung der elektrischettSchweißibzw. Erhitzmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die nach der Scottschen Schaltung in Stern verbündenen Primärwindungen und in einer Phase einen Regulierwiderstand bzw: eine regelbare Drosselspule besitzen.2. Modification of the electric welding or welding. Heating machine according to claim 1, characterized in that the Scott's circuit in star connected primary windings and in one phase have a regulating resistor or an adjustable choke coil. Jr/Jr / /WWWVW^y/ WWWVW ^ y
DEM73990D 1921-06-05 1921-06-05 Electric welding or heating machine for three-phase networks with two secondary heating points Expired DE390811C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM73990D DE390811C (en) 1921-06-05 1921-06-05 Electric welding or heating machine for three-phase networks with two secondary heating points

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM73990D DE390811C (en) 1921-06-05 1921-06-05 Electric welding or heating machine for three-phase networks with two secondary heating points

Publications (1)

Publication Number Publication Date
DE390811C true DE390811C (en) 1924-02-29

Family

ID=7315391

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM73990D Expired DE390811C (en) 1921-06-05 1921-06-05 Electric welding or heating machine for three-phase networks with two secondary heating points

Country Status (1)

Country Link
DE (1) DE390811C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1101105B (en) * 1952-11-17 1961-03-02 Schloemann Ag Arrangement for electroinductive heating of a die of a closed-die forging press

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1101105B (en) * 1952-11-17 1961-03-02 Schloemann Ag Arrangement for electroinductive heating of a die of a closed-die forging press

Similar Documents

Publication Publication Date Title
DE390811C (en) Electric welding or heating machine for three-phase networks with two secondary heating points
DE932319C (en) Arrangement for voltage regulation of synchronous generators
DE720061C (en) Arrangement for voltage regulation of synchronous machines with the help of a rectifier
DE609632C (en) Arrangement for supplying commutatorless AC motors using grid-controlled discharge vessels from an AC network
DE674671C (en) Device for improving the commutation of direct current series motors fed by a single-phase rectifier
DE972769C (en) Arrangement to improve the voltage stability of synchronous machines or synchronized asynchronous machines
DE604985C (en) Arrangement for voltage regulation in three-phase networks
DE750983C (en) Device for automatic voltage regulation of single or multi-phase alternators
DE639147C (en) Arrangement for grid control in AC-fed converting devices with vapor or gas discharge vessels, especially converters
DE644406C (en) Arrangement to achieve a series connection characteristic in valve-controlled motors in synchronous machine design
DE340712C (en) Process for regulating the direct current voltage in metal vapor rectifier systems with anode currents that are interlinked in a transformer
DE1038175B (en) Arrangement for voltage regulation, in particular for keeping the voltage of synchronous machines constant
DE709629C (en) Arrangement for the operation of rectifiers, whose grid circles receive a phase-variable control AC voltage
DE736515C (en) A special X-ray apparatus powered by a generator, preferably driven by a gasoline engine
DE333900C (en) Arrangement to avoid or reduce the series choke coil in the direct current circuit of a frequency doubler at rest
DE1149097B (en) Synchronous generator with self-excitation
DE745273C (en) Regenerative braking circuit for AC vehicles with exciter generator and field control
DE946641C (en) Arrangement for parallel operation of self-regulating synchronous generators
DE625816C (en) Device for supplying direct current motors with adjustable voltage from an alternating current network
DE679010C (en) Arrangement to improve the power factor in regenerative braking of single-phase alternating current collector machines
DE336472C (en) Group connection of alternating current commutator machines
DE941675C (en) Device for controlling the speed of an electric motor
DE933767C (en) Switching arrangement for stabilizing electromechanical controllers
DE460222C (en) Arrangement for feeding a self-inductance from an alternating current source with a current that is wholly or almost in phase with the voltage of the alternating current source
DE587210C (en) Device for limiting the surge short-circuit current of large synchronous generators