US1199086A - Induction-transformer. - Google Patents

Induction-transformer. Download PDF

Info

Publication number
US1199086A
US1199086A US83411214A US1914834112A US1199086A US 1199086 A US1199086 A US 1199086A US 83411214 A US83411214 A US 83411214A US 1914834112 A US1914834112 A US 1914834112A US 1199086 A US1199086 A US 1199086A
Authority
US
United States
Prior art keywords
rotor
induction
coupling
axle
transformer
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 - Lifetime
Application number
US83411214A
Inventor
Julius Laufer
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.)
Siemens Schuckertwerke AG
Original Assignee
Siemens Schuckertwerke AG
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 Siemens Schuckertwerke AG filed Critical Siemens Schuckertwerke AG
Priority to US83411214A priority Critical patent/US1199086A/en
Application granted granted Critical
Publication of US1199086A publication Critical patent/US1199086A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/007—Transmitting or indicating the displacement of flexible diaphragms using variations in inductance

Definitions

  • My present invention relates to induction transformers, that is to transformers of the induction motor type, which consist of a fixed member or stator and a rotary member or rotor, and which are adjusted by the relative position of the stator and rotor for changing the relative phase values of the of the members of the induction transformer.
  • This rush of current is furthermore fully brought to action by reason of the small reactance of the induction transformer.
  • the rotor of the transformer therefore an exceedingly large torque will be exerted so that the apparatus will have the tendency to act as an induction motor and to rotate with great force, which may cause either the rotor body to become loose, or a distortion or breaking of the rather long and thin rotor axle or other injuries to the adjusting mechanism for the rotor.
  • the object of my invention consists in providing means for protecting an induction transformer against such injuries in that free rotation of the rotor will be enabled in case a certain limit of torque is surpassed.
  • the rotor is coupled with the adjusting mechanism, for instance by means of a slip coupling, which is so adjusted that the friction between the two halves of the coupling will be overcome in case of a torque which is exceeding a permissible value.
  • the location of the coupling between the rotor body and the looking or adjusting means it is unessential whether for instance the coupling is arranged between the rotor axle and the axle of the adjusting mechanism, or whether the rotor body is constructed to be rotatable upon the axle and a yielding coupling provided therebetween.
  • the construction may be also made in such a manner that the coupling will be disengaged in case of the torque assuming an impermissible value.
  • This disengaging is preferably accomplished electrically in dependence from the rotor current, and if the rotor body will be loosely mounted on the axle, this disengaging may be done by means of bolts which are electromagnetically actuated from the rotor windings, said bolts being normally in engagement with the axle and coming out of engagement in case of a rush of current.
  • Figure l is an elevation of an induction transformer comprising a slip-coupling according to my present invention
  • Fig. 2 shows a modified device for uncoupling the rotor from its axle by means of shear bolts
  • Fig. 3 represents a similar device for electro-magnetically disengaging the rotor.
  • a is the stator of the induction transformer, b the rotor of the same, 0 the slip rings, (Z the axle which is carried through the bearing a mounted at the upper and a similar bearing at the lower end of the stator.
  • the aforementioned slip-coupling is indicated at g.
  • the adjusting device for adjusting the rotor in different angular positions is indicated by a worm gear h, 2', which may be operated by a crank or hand wheel or in any other desired manner.
  • the coupling device which may be substituted for the slip-coupling, comprises essentially a bolt j which is passed through a borehole in the hub of the rotor body 7) and the axle (Z, said bolt j being so dimensioned that it will be shorn off at a definite torque between the axle (Z and the rotor body 7), thus permitting free rotation of the rotor body.
  • the electro-magnetic means for dis en aging the coupling between the rotor and its axle, as shown in Fig. 3 consist of a pin or bolt 70 passing through a hole in the hub of the rotor and normally engaging the same with its axle, which pin or bolt is drawn out by the solenoid Z which may be connected to the rotor windings. 7,
  • an induction transformer the combination of a stator and a rotor, an adjusting mechanism for adjusting the position of said rotor, and a slip-coupling adapted to disengage said rotor from said adj usting mechanism, if the torque exerted by said rotor surpasses a certain maximum value.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Ac Motors In General (AREA)

Description

J. LAUFER.
INDUCTION TRANSFORMER.
APPLICATION FILED APR. 24, 1914.
1,199,086. Patented Sept. 26,1916.
UNITED STATES PATENT OFFTCE.
JULIUS LAUFER, Ol BERLIN, GERMANY, ASSIGNOR TO SIEMENS-SGHUCKERTWERKE, G. M. B. 1-1., 01? SIEMENSSTADT, NEAR BERLIN, GERMANY, A. CORPORATION OF GERMANY.
INDUCTION-TRANSFORMER.
Specification of Letters Patent.
Patented Sept. 26, 1916.
To all whom it may concern:
Be it known that I, JULIUS LAUFER, a German citizen, and resident of Berlin, Germany, have invented certain new and useful Improvements in Induction-Transformers, of which the following is a specification.
My present invention relates to induction transformers, that is to transformers of the induction motor type, which consist of a fixed member or stator and a rotary member or rotor, and which are adjusted by the relative position of the stator and rotor for changing the relative phase values of the of the members of the induction transformer. This rush of current is furthermore fully brought to action by reason of the small reactance of the induction transformer. Upon the rotor of the transformer therefore an exceedingly large torque will be exerted so that the apparatus will have the tendency to act as an induction motor and to rotate with great force, which may cause either the rotor body to become loose, or a distortion or breaking of the rather long and thin rotor axle or other injuries to the adjusting mechanism for the rotor.
The object of my invention consists in providing means for protecting an induction transformer against such injuries in that free rotation of the rotor will be enabled in case a certain limit of torque is surpassed. For this purpose the rotor is coupled with the adjusting mechanism, for instance by means of a slip coupling, which is so adjusted that the friction between the two halves of the coupling will be overcome in case of a torque which is exceeding a permissible value. As regards the location of the coupling between the rotor body and the looking or adjusting means it is unessential whether for instance the coupling is arranged between the rotor axle and the axle of the adjusting mechanism, or whether the rotor body is constructed to be rotatable upon the axle and a yielding coupling provided therebetween. The construction may be also made in such a manner that the coupling will be disengaged in case of the torque assuming an impermissible value. This disengaging is preferably accomplished electrically in dependence from the rotor current, and if the rotor body will be loosely mounted on the axle, this disengaging may be done by means of bolts which are electromagnetically actuated from the rotor windings, said bolts being normally in engagement with the axle and coming out of engagement in case of a rush of current.
In the accompanying drawing I have shown an example of a construction accord ing to my present invention.
Figure l is an elevation of an induction transformer comprising a slip-coupling according to my present invention, Fig. 2 shows a modified device for uncoupling the rotor from its axle by means of shear bolts and Fig. 3 represents a similar device for electro-magnetically disengaging the rotor.
a is the stator of the induction transformer, b the rotor of the same, 0 the slip rings, (Z the axle which is carried through the bearing a mounted at the upper and a similar bearing at the lower end of the stator. The aforementioned slip-coupling is indicated at g. The adjusting device for adjusting the rotor in different angular positions is indicated by a worm gear h, 2', which may be operated by a crank or hand wheel or in any other desired manner. In Fig. 2 the coupling device which may be substituted for the slip-coupling, comprises essentially a bolt j which is passed through a borehole in the hub of the rotor body 7) and the axle (Z, said bolt j being so dimensioned that it will be shorn off at a definite torque between the axle (Z and the rotor body 7), thus permitting free rotation of the rotor body. The electro-magnetic means for dis en aging the coupling between the rotor and its axle, as shown in Fig. 3 consist of a pin or bolt 70 passing through a hole in the hub of the rotor and normally engaging the same with its axle, which pin or bolt is drawn out by the solenoid Z which may be connected to the rotor windings. 7,
Having thus described my invention I claim as new and desire to secure by Letters Patent of the United States 1. In an induction transformer the combination of a stator and a rotor, an adjusting mechanism for adjusting the position of said rotor relatively to said stator, and coupling means intermediate between said adjusting mechanism and said rotor, said coupling means being adapted to mechanically disengage said rotor from said adjusting mechanism, if the torque exerted by said rotor surpasses a certain maximum value.
2. In an induction transformer the combination of a stator and a rotor, an adjusting mechanism for adjusting the position of said rotor, and a slip-coupling adapted to disengage said rotor from said adj usting mechanism, if the torque exerted by said rotor surpasses a certain maximum value.
In witness whereof I have hereunto set my signature in the presence of two subscribing witnesses.
JULIUS LAUFER. Witnesses WVoLnnMAn HAUPT, HENRY H Asrnn.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.
US83411214A 1914-04-24 1914-04-24 Induction-transformer. Expired - Lifetime US1199086A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US83411214A US1199086A (en) 1914-04-24 1914-04-24 Induction-transformer.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83411214A US1199086A (en) 1914-04-24 1914-04-24 Induction-transformer.

Publications (1)

Publication Number Publication Date
US1199086A true US1199086A (en) 1916-09-26

Family

ID=3267029

Family Applications (1)

Application Number Title Priority Date Filing Date
US83411214A Expired - Lifetime US1199086A (en) 1914-04-24 1914-04-24 Induction-transformer.

Country Status (1)

Country Link
US (1) US1199086A (en)

Similar Documents

Publication Publication Date Title
US1199086A (en) Induction-transformer.
GB2026110A (en) Electromagnetically releasable spring-actuated brake
US1716553A (en) Transformer
US1212476A (en) Dynamo.
US736461A (en) Electric motor and brake.
US953219A (en) Electric motor.
US1134739A (en) Electric-motor brake.
US729414A (en) Field-magnet structure.
US1159238A (en) Brake.
US943503A (en) Dynamo-electric machine.
US1082225A (en) Speed-governing mechanism.
US1279778A (en) Compound band-brake.
US1207861A (en) Elevator-brake.
US503420A (en) Clutch for electric motors
US1030934A (en) Driven-shaft governor.
US197832A (en) Improvement in pendulum-clocks
US750940A (en) Alternating-current motor
KR870011812A (en) Motor-Transformer Couplings
US516843A (en) Electrical hoisting apparatus
US1731350A (en) Split rotor construction
US1266303A (en) Electromagnetic power-transmitting apparatus.
US1204471A (en) Wheel-brake.
US115436A (en) Said constable
US1003600A (en) Regulation of dynamo-electric machinery.
US1285809A (en) Electric motor and transmission system for locomotives and other purposes.