AT338915B - STAND FOR ELECTRIC MACHINERY - Google Patents
STAND FOR ELECTRIC MACHINERYInfo
- Publication number
- AT338915B AT338915B AT120275A AT120275A AT338915B AT 338915 B AT338915 B AT 338915B AT 120275 A AT120275 A AT 120275A AT 120275 A AT120275 A AT 120275A AT 338915 B AT338915 B AT 338915B
- Authority
- AT
- Austria
- Prior art keywords
- pressure
- stand
- slot
- stator
- fingers
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/42—Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Description
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Die Erfindung bezieht sich auf Ständer für elektrische Maschinen, mit einem aus Blechen geschichteten Kern, der mittels zweier, je an einer Ständerstirnseite angeordneter Druckplatten aus magnetisierbarem Stahl zusammengehalten ist, die mit in Achsrichtung offenen, im wesentlichen radial verlaufenden Nuten und mit in diesen befestigten Druckfingern aus unmagnetisierbarem Stahl versehen sind.
Ziel der Erfindung ist ein Ständer dieses Aufbaues, bei dem die zu der Ständerstirnseite senkrechte Abmessung der aus jeweils einer Druckplatte und den an ihr befestigten Druckfingern bestehenden Einheiten die
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herstellbar sind.
Zur Erreichung dieses Zieles sind erfindungsgemäss die Nuten als durchgehende Schlitze ausgebildet und die in je einen Schlitz eingesetzten, stabförmigen Druckfinger an die Druckplatte im Bereich des Schlitzes angeschweisst. Die Herstellung von Schlitzen ist einfacher als die von Nuten, bei welchen darauf geachtet werden muss, dass sämtliche Nutensohlen in einer gemeinsamen Ebene liegen. Bei Druckplatten mit Schlitzen und in
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manchen Maschinen um 100 bis 120 mm ; was zu einer merklichen Verringerung des Kupfergewichtes und der Kupferverluste führt, die nicht mit Nachteilen verbunden ist.
Die Erfindung ist im folgenden an Hand einer beispielsweisen Ausführungsform näher erläutert, die in den Zeichnungen veranschaulicht ist. In den Zeichnungen zeigt Fig. 1 einen Teil eines erfindungsgemässen Ständers in
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Druckeinrichtungen sind die Ständerbleche aneinandergepresst. Diese Druckeinrichtungen, die an den beiden Stirnseiten des Ständers angeordnet sind, bestehen je aus einer Druckplatte --5-- und aus an dieser befestigten Druckfingern--6--. In den aus üblichem magnetisierbarem Stahl hergestellten Druckplatten sind in bezug auf die Ständerachse radiale Schlitze --7-- ausgebildet, und in jedem Schlitz ist ein Druckfinger --6-- aus unmagnetisierbarem Stahl eingesetzt. Platten und Finger sind im Bereich des Schlitzes miteinander verschweisst.
An den beiden Ständerstirnseiten einander gegenüberliegender Druckplatten sind mittels Gewindestangen--8-und Muttern--9--zusammengespannt. In den Druckplatten sind ferner Gewindebohrungen vorgesehen, in die Justierschrauben --9-- eingeschraubt sind. Diese gegen einen festen Teil des Ständer-oder Maschinengestelles abstützbaren Schrauben ermöglichen eine Ausrichtung der Druckplatten gegenüber dem Kern.
Die einzelnen Druckfinger sind in denselben Abständen ausgeteilt wie die Zähne des Kernes, von welchen
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und untereinander gleichen Druckfinger dient unmagnetisierbarer Flachstahl, der einfach zerschnitten wird. Die üblichen Toleranzen und die Oberflächenbeschaffenheit der stabförmigen Abschnitte erlauben deren Verwendung als Druckfinger ohne irgendwelche Bearbeitung. Auch die saubere Durchführung der notwendigen Schweissverbindungen stösst auf keine Schwierigkeiten. Von dem Abstand der Druckplatten von dem zusammengepressten Eisenkern hängt die Erwärmung der Platten ab. Dieser Abstand ist davon bestimmt, wie weit die Schmalseiten der hochkant gestellten Druckfingerstäbe über die Plattenseite vorstehen, die dem Kern
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schmal sein können, so dass der Verbrauch von teurem unmagnetisierbarem Stahl weitestgehend herabgesetzt ist.
Aus diesem Grund und vor allem wegen des geringen Arbeitsaufwandes bei ihrer Herstellung erweisen sich erfindungsgemässe Ständer als sehr wirtschaftlich.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
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The invention relates to stator for electrical machines, with a core layered from sheet metal, which is held together by means of two pressure plates made of magnetizable steel, each arranged on a stator end face, with essentially radial grooves that are open in the axial direction and with pressure fingers fastened in them are made of non-magnetizable steel.
The aim of the invention is a stand of this structure, in which the dimension perpendicular to the stand face of the units consisting of a pressure plate and the pressure fingers attached to it
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can be produced.
To achieve this goal, according to the invention, the grooves are designed as continuous slots and the rod-shaped pressure fingers inserted into each slot are welded to the pressure plate in the area of the slot. The production of slots is easier than that of grooves, in which it must be ensured that all the groove bottoms are in a common plane. For printing plates with slots and in
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some machines by 100 to 120 mm; which leads to a noticeable reduction in the copper weight and the copper losses, which are not associated with disadvantages.
The invention is explained in more detail below using an exemplary embodiment which is illustrated in the drawings. In the drawings, FIG. 1 shows part of a stand according to the invention in FIG
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The stator plates are pressed together with pressure devices. These pressure devices, which are arranged on the two end faces of the stand, each consist of a pressure plate --5-- and pressure fingers - 6-- attached to it. In the pressure plates made of conventional magnetizable steel, radial slots --7-- are formed in relation to the stator axis, and a pressure finger --6-- made of non-magnetizable steel is inserted in each slot. The plates and fingers are welded together in the area of the slot.
On the two stand end faces of opposite pressure plates are clamped together by means of threaded rods - 8 - and nuts - 9. There are also threaded holes in the pressure plates, into which adjusting screws --9-- are screwed. These screws, which can be supported against a fixed part of the stand or machine frame, enable the pressure plates to be aligned with respect to the core.
The individual pressure fingers are distributed at the same intervals as the teeth of the core, from which
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and the same pressure finger is used for non-magnetizable flat steel that is simply cut up. The usual tolerances and the surface properties of the rod-shaped sections allow them to be used as pressure fingers without any processing. Even the clean execution of the necessary welded connections does not encounter any difficulties. The heating of the plates depends on the distance between the pressure plates and the pressed iron core. This distance is determined by how far the narrow sides of the pressure finger rods placed on edge protrude beyond the side of the plate, which is the core
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can be narrow, so that the consumption of expensive, non-magnetizable steel is largely reduced.
For this reason, and above all because of the low amount of work involved in their manufacture, stands according to the invention have proven to be very economical.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT120275A AT338915B (en) | 1975-02-18 | 1975-02-18 | STAND FOR ELECTRIC MACHINERY |
FR7509166A FR2305879A1 (en) | 1975-02-18 | 1975-03-24 | Stator with end plate and finger assembly of reduced height - has nonmagnetic steel pressure fingers located in grooves |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT120275A AT338915B (en) | 1975-02-18 | 1975-02-18 | STAND FOR ELECTRIC MACHINERY |
FR7509166A FR2305879A1 (en) | 1975-02-18 | 1975-03-24 | Stator with end plate and finger assembly of reduced height - has nonmagnetic steel pressure fingers located in grooves |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA120275A ATA120275A (en) | 1977-01-15 |
AT338915B true AT338915B (en) | 1977-09-26 |
Family
ID=34827836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT120275A AT338915B (en) | 1975-02-18 | 1975-02-18 | STAND FOR ELECTRIC MACHINERY |
Country Status (2)
Country | Link |
---|---|
AT (1) | AT338915B (en) |
FR (1) | FR2305879A1 (en) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2513450A1 (en) * | 1981-09-24 | 1983-03-25 | Alsthom Atlantique | FULLY MAGNETIC CIRCUIT STATOR WITH CLAMPING FINGERS FOR A ROTATING DYNAMOELECTRIC MACHINE, IN PARTICULAR OF A BULB IMMERING TYPE |
SE9602079D0 (en) | 1996-05-29 | 1996-05-29 | Asea Brown Boveri | Rotating electric machines with magnetic circuit for high voltage and a method for manufacturing the same |
UA44857C2 (en) | 1996-05-29 | 2002-03-15 | Абб Аб | ELECTROMAGNETIC DEVICE (option), high-voltage electric power SET, power grid, method of controlling the electric field in the electromagnetic DEVICES, a method of manufacturing a magnetic circuit for electrical machines rotating CABLE FOR DEVICES FORMATION in electromagnetic winding generating a magnetic field |
AU718707B2 (en) | 1996-05-29 | 2000-04-20 | Abb Ab | Insulated conductor for high-voltage windings and a method of manufacturing the same |
WO1997045937A1 (en) * | 1996-05-29 | 1997-12-04 | Asea Brown Boveri Ab | A device in the stator of a rotating electric machine |
SE510192C2 (en) | 1996-05-29 | 1999-04-26 | Asea Brown Boveri | Procedure and switching arrangements to reduce problems with three-tier currents that may occur in alternator and motor operation of AC machines connected to three-phase distribution or transmission networks |
ATE250817T1 (en) | 1996-05-29 | 2003-10-15 | Abb Ab | CONDUCTOR FOR HIGH VOLTAGE WINDINGS AND ROTATING ELECTRICAL MACHINE HAVING SUCH A CONDUCTOR |
SE509072C2 (en) | 1996-11-04 | 1998-11-30 | Asea Brown Boveri | Anode, anodizing process, anodized wire and use of such wire in an electrical device |
SE515843C2 (en) | 1996-11-04 | 2001-10-15 | Abb Ab | Axial cooling of rotor |
SE512917C2 (en) | 1996-11-04 | 2000-06-05 | Abb Ab | Method, apparatus and cable guide for winding an electric machine |
SE510422C2 (en) | 1996-11-04 | 1999-05-25 | Asea Brown Boveri | Magnetic sheet metal core for electric machines |
SE9704423D0 (en) | 1997-02-03 | 1997-11-28 | Asea Brown Boveri | Rotary electric machine with flushing support |
SE508544C2 (en) | 1997-02-03 | 1998-10-12 | Asea Brown Boveri | Method and apparatus for mounting a stator winding consisting of a cable. |
SE9704421D0 (en) | 1997-02-03 | 1997-11-28 | Asea Brown Boveri | Series compensation of electric alternator |
SE9704427D0 (en) | 1997-02-03 | 1997-11-28 | Asea Brown Boveri | Fastening device for electric rotary machines |
SE9704431D0 (en) | 1997-02-03 | 1997-11-28 | Asea Brown Boveri | Power control of synchronous machine |
SE508543C2 (en) | 1997-02-03 | 1998-10-12 | Asea Brown Boveri | Coiling |
SE9704422D0 (en) | 1997-02-03 | 1997-11-28 | Asea Brown Boveri | End plate |
BR9815420A (en) | 1997-11-28 | 2001-07-17 | Abb Ab | Method and device for controlling the magnetic flux with an auxiliary winding on a rotating high voltage alternating current machine |
GB2331867A (en) | 1997-11-28 | 1999-06-02 | Asea Brown Boveri | Power cable termination |
US6801421B1 (en) | 1998-09-29 | 2004-10-05 | Abb Ab | Switchable flux control for high power static electromagnetic devices |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE315881C (en) * | ||||
GB240971A (en) * | 1924-08-07 | 1925-10-15 | Jan Arthur Kuyser | Improvements relating to dynamo-electric machines |
-
1975
- 1975-02-18 AT AT120275A patent/AT338915B/en not_active IP Right Cessation
- 1975-03-24 FR FR7509166A patent/FR2305879A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
ATA120275A (en) | 1977-01-15 |
FR2305879A1 (en) | 1976-10-22 |
FR2305879B1 (en) | 1978-02-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee | ||
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |