DE3442389A1 - Device for testing the strength of a bundle of laminations - Google Patents

Device for testing the strength of a bundle of laminations

Info

Publication number
DE3442389A1
DE3442389A1 DE19843442389 DE3442389A DE3442389A1 DE 3442389 A1 DE3442389 A1 DE 3442389A1 DE 19843442389 DE19843442389 DE 19843442389 DE 3442389 A DE3442389 A DE 3442389A DE 3442389 A1 DE3442389 A1 DE 3442389A1
Authority
DE
Germany
Prior art keywords
laminations
bolt
rotor
way valve
strength
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.)
Ceased
Application number
DE19843442389
Other languages
German (de)
Inventor
Konrad Passail Brunnader
Franz Ing. Weiz Gschanes
Gerald Ing. Sinabelkirchen Hammerschmid
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.)
Andritz Hydro GmbH Austria
Original Assignee
Andritz Hydro GmbH Austria
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 Andritz Hydro GmbH Austria filed Critical Andritz Hydro GmbH Austria
Publication of DE3442389A1 publication Critical patent/DE3442389A1/en
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

Hitherto, it was only possible to test the strength of bundles of laminations after the rotor had been taken out. With the present invention, it is possible to make a quality assessment of the degree of compression of the bundle of laminations with the rotor installed. This device is furthermore of very simple construction and is introduced into the air gap of the machine, whereupon the measuring jaws are used to grip behind the bundles of laminations via the radial gaps. The testing device comprises a rotor (4) in which a pin (5) is arranged. Both the tube (4) and the pin (5) have measuring jaws (6, 7) which grip behind the bundles (2) of laminations. The pin (5) is moved via a two-way valve (8) by means of a double-acting piston (9). A travel dial gauge (10) is provided for the movement of the piston (9). A pressure-measuring device (12) is inserted in the feed line (11) leading to the two-way valve (8). <IMAGE>

Description

"Einrichtung zur Prüfung der Blechpaketfestigkeit""Device for testing the laminated core strength"

Die Erfindung betrifft eine Einrichtung zur Prüfung der Blechpaketfestigkeit, insbesondere von Statoren von großen rotierenden Maschinen bei eingebauten Rotor.The invention relates to a device for testing the strength of the laminated core, especially of stators of large rotating machines with built-in rotors.

Bisher war es nur möglich die Festigkeit der Blechpakete zu prüfen, wenn der Rotor ausgebaut war.Up to now it was only possible to check the strength of the laminated cores, when the rotor was removed.

Aufgabe der Erfindung ist es daher, ei ne Einrichtung zu schaffen mit der bei eingebauten Läufer die Festigkeit der einzelnen Blechpakete sicher -getestet bzw.The object of the invention is therefore to create a device with the built-in rotor, the strength of the individual laminations safely tested respectively.

gemessen werden kann.can be measured.

Die eingangs zitierte Einrichtung ist erfindungsgemäß dadurch gekennzeichnet, daß in einem Rohr ein Bolzen angeordnet ist, wobei sowohl das Rohr als auch der Bolzen Meßbackerln an ihren Enden aufweisen, die die Statorpakete hintergreifen und daß dieser Bolzen über ein Zweiwegventil hydraulisch oder pneumatisch über einen doppelwirkenden Kolben in beide Richtungen bewegbar ist, und daß eine Weg-Meßuhr für die Bewegung des Bolzens vorgesehen ist.The device cited at the beginning is characterized according to the invention that a bolt is arranged in a tube, both the tube and the Have bolts Meßbackerln at their ends, which engage behind the stator packs and that this bolt via a two-way valve hydraulically or pneumatically via a double-acting piston is movable in both directions, and that a distance dial gauge intended for the movement of the bolt.

Mit dieser Einrichtung gemäß der Erfindung ist es erstmals möglich bei eingebauten Rotor eine Qualitätsfeststellung über die Blechpaketpressung abzugeben.With this device according to the invention it is possible for the first time to issue a quality assessment via the laminated core pressing when the rotor is installed.

Darüberhinaus weist diese Einrichtung einen überaus einfachen Aufbau auf und wird in den Maschinenluftspalt eingeführt, wonach dann mit den Meßbackerln die Blechpakete über die radialen Spalte hintergriffen werden.In addition, this device has an extremely simple structure on and is introduced into the machine air gap, after which then with the Messbackerln the laminated stacks are gripped from behind via the radial gaps.

Gemäß einer Ausgestaltung der Erfindung ist in der hydraulischen oder pneumatischen Zuleitung zum Zweiwegventil ein Druckmeßgerät eingeschleift.According to one embodiment of the invention is in the hydraulic or A pressure gauge is looped into the pneumatic supply line to the two-way valve.

Über dieses Druckmeßgerät kann der Druckanstieg bei der Überprüfung abgelesen werden.The pressure increase during the check can be monitored via this pressure measuring device can be read.

Die Funktionsweise dieser erfindungsgemaßen Einrichtung wird nachstehend beschrieben.The mode of operation of this device according to the invention is described below described.

Das mit dem Meßbackerl versehene Rohr bzw.' Bolzenende wird in den Luftspalt zwischen Rotor und Stator eingeführt. Mit den Meßbackerln wird in die radialen Schlitze eingegriffen und entsprechend der Stellung des Zweiwegventils eine pressende oder eine auseinanderdrückende Bewegung ausgeführt. Der achsiale Weg der Meßbackerln zueinander wird nach dem Druckanstieg auf einer Meßuhr abgelesen und die dazu aufgewendete Kraft auf einem Druckmeßgerät.The tube or ' The end of the bolt is inserted into the Air gap introduced between rotor and stator. With the Messbackerln is in the radial slots engaged and corresponding to the position of the two-way valve a pushing or a pushing apart movement performed. The axial The distance between the measuring jaws is read on a dial gauge after the pressure increase and the force applied to it on a pressure gauge.

Die Länge vom Rohr bzw. Bolzen ist so bemessen, daß man die erfindungsgemäße Einrichtung mindestens bis zur Rotormitte einschieben und die Meßgeräte außerhalb des Wickelkopfes ablesen kann. Durchgehende Messungen huber die Statorlänge sind aber auch möglich.The length of the tube or bolt is dimensioned so that one of the invention Insert the device at least to the center of the rotor and the measuring devices outside of the winding head can be read. Continuous measurements over the stator length are but also possible.

An Hand eines in der Zeichnung dargestellten Ausführungsbeispieles wird die Erfindung näher erläutert.On the basis of an embodiment shown in the drawing the invention is explained in more detail.

In den zwischen Läufer 1 und den Blechpaketen 2 befindlichen Luftspalt 3 wird die Prüfeinrichtung eingeführt. Diese Prüfeinrichtung besteht aus einem Rohr 4 in dem ein Bolzen 5 angeordnet ist. Sowohl das Rohr 4 als auch der Bolzen 5 weisen Meßbackerl 6, 7 auf, die die Blechpakete 2 hintergreifen. Der Bolzen 5 wird über ein Zweiwegventil 8 hydraulisch oder pneumatisch od. dgl. über einen doppelwirkenden Kolben 9 bewegt. Für die Bewegung des Kolbens 9 ist eine Weg-Meßuhr 10 vorgesehen.In the air gap between the rotor 1 and the laminated cores 2 3 the test facility is introduced. This test device consists of a pipe 4 in which a bolt 5 is arranged. Both the tube 4 and the bolt 5 have Messbackerl 6, 7, which engage the laminated core 2 from behind. The bolt 5 is over a two-way valve 8 hydraulic or pneumatic or the like. Via a double-acting Piston 9 moves. For the movement of the piston 9, a dial gauge 10 is provided.

In die hydraulische oder pneumatische Zuleitung 11 zum Zweiwegventil 8 ist ein Druckmeßgerät 12 eingeschleift.In the hydraulic or pneumatic supply line 11 to the two-way valve 8, a pressure measuring device 12 is looped in.

- Leerseite -- blank page -

Claims (2)

Patentansprüche 1. Einrichtung zur Prüfung der Blechpaketfestigkeit, insbesondere von Statoren von großen rotierenden Maschinen bei eingebauten Rotor, dadurch gekennzeichnet, daß in einem Rohr (4) ein Bolzen (5) angeordnet ist, wobei sowohl das Rohr (4) als auch der Bolzen (5) Meßbackerln (6, 7) an ihren Enden aufweisen, die die Statorpakete (2) hintergreifen und daß dieser Bolzen (5) über ein Zweiwegventil (8) hydraulisch oder pneumatisch über einen doppelwirkenden Kolben (9) in beide Richtungen bewegbar ist, und daß eine Weg-Meßuhr (10) für die Bewegung des Bolzens (5) vorgesehen ist. Claims 1. Device for testing the strength of the laminated core, especially of stators of large rotating machines with built-in rotor, characterized in that a bolt (5) is arranged in a tube (4), wherein both the tube (4) and the bolt (5) have measuring jaws (6, 7) at their ends, which engage behind the stator packs (2) and that this bolt (5) has a two-way valve (8) hydraulically or pneumatically via a double-acting piston (9) in both Directions is movable, and that a distance dial indicator (10) for the movement of the bolt (5) is provided. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß in der hydraulischen oder pneumatischen Zuleitung (11) zum Zweiwegventil (8) ein Druckmeßgerät (12) eingeschleift ist.2. Device according to claim 1, characterized in that in the hydraulic or pneumatic supply line (11) to the two-way valve (8) a pressure measuring device (12) is looped in.
DE19843442389 1983-12-12 1984-11-20 Device for testing the strength of a bundle of laminations Ceased DE3442389A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT430983A AT379716B (en) 1983-12-12 1983-12-12 USE OF A STRENGTH TEST DEVICE

Publications (1)

Publication Number Publication Date
DE3442389A1 true DE3442389A1 (en) 1985-06-20

Family

ID=3562318

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843442389 Ceased DE3442389A1 (en) 1983-12-12 1984-11-20 Device for testing the strength of a bundle of laminations

Country Status (4)

Country Link
AT (1) AT379716B (en)
CH (1) CH669692A5 (en)
DE (1) DE3442389A1 (en)
SE (1) SE8405930L (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647979A1 (en) * 1989-05-30 1990-12-07 Electricite De France Process and device for constricting the magnetic circuit of a rotating electric machine
FR2725850A1 (en) * 1994-10-13 1996-04-19 Electricite De France Appts. for measuring compression of stack of laminations of stator of alternator
US5524474A (en) * 1994-11-08 1996-06-11 Hydro-Quebec Method and apparatus for quantitatively evaluating the stator wedge tightness of an electric alternator
US6794884B2 (en) 2002-05-10 2004-09-21 General Electric Company Method and system for evaluating core stack pressure
WO2004106912A1 (en) * 2003-05-21 2004-12-09 General Electric Company Method and system for evaluating core stack pressure
EP1876690A1 (en) * 2006-07-03 2008-01-09 Siemens Aktiengesellschaft Pressing device for checking a stack of laminations

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2238349A1 (en) * 1972-08-04 1974-02-14 Carl Scheneck Maschinenfabrik HYDRAULICALLY DRIVEN RESONANCE TESTING MACHINE
FR2242900A6 (en) * 1973-08-30 1975-03-28 Onera (Off Nat Aerospatiale) Material resistance testing appts. - test sample forms part of chain subjected to tensile forces

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2238349A1 (en) * 1972-08-04 1974-02-14 Carl Scheneck Maschinenfabrik HYDRAULICALLY DRIVEN RESONANCE TESTING MACHINE
FR2242900A6 (en) * 1973-08-30 1975-03-28 Onera (Off Nat Aerospatiale) Material resistance testing appts. - test sample forms part of chain subjected to tensile forces

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647979A1 (en) * 1989-05-30 1990-12-07 Electricite De France Process and device for constricting the magnetic circuit of a rotating electric machine
FR2725850A1 (en) * 1994-10-13 1996-04-19 Electricite De France Appts. for measuring compression of stack of laminations of stator of alternator
US5524474A (en) * 1994-11-08 1996-06-11 Hydro-Quebec Method and apparatus for quantitatively evaluating the stator wedge tightness of an electric alternator
US6794884B2 (en) 2002-05-10 2004-09-21 General Electric Company Method and system for evaluating core stack pressure
WO2004106912A1 (en) * 2003-05-21 2004-12-09 General Electric Company Method and system for evaluating core stack pressure
EP1876690A1 (en) * 2006-07-03 2008-01-09 Siemens Aktiengesellschaft Pressing device for checking a stack of laminations

Also Published As

Publication number Publication date
ATA430983A (en) 1985-06-15
CH669692A5 (en) 1989-03-31
SE8405930L (en) 1985-06-13
AT379716B (en) 1986-02-25
SE8405930D0 (en) 1984-11-23

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8131 Rejection