DE567036C - Slip knife - Google Patents

Slip knife

Info

Publication number
DE567036C
DE567036C DE1930567036D DE567036DD DE567036C DE 567036 C DE567036 C DE 567036C DE 1930567036 D DE1930567036 D DE 1930567036D DE 567036D D DE567036D D DE 567036DD DE 567036 C DE567036 C DE 567036C
Authority
DE
Germany
Prior art keywords
generator
temperature
power generator
coil
cross
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
DE1930567036D
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.)
ABB Training Center GmbH and Co KG
Original Assignee
Hartmann and Braun 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 Hartmann and Braun AG filed Critical Hartmann and Braun AG
Application granted granted Critical
Publication of DE567036C publication Critical patent/DE567036C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42Devices characterised by the use of electric or magnetic means
    • G01P3/56Devices characterised by the use of electric or magnetic means for comparing two speeds
    • G01P3/58Devices characterised by the use of electric or magnetic means for comparing two speeds by measuring or comparing amplitudes of generated currents or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
  • Synchronous Machinery (AREA)

Description

Schlupfmesser Es ist bekannt, Tourenzahlen dadurch zu messen. daß man mit der betreffenden Achse einen Stromerzeuger kuppelt und dessen Strom mißt. Da das Anzeigeinstrument des Stromes an beliebiger Stelle stehen kann, so kann man die Tourenzahl zweier Achsen mittels zweier Ablesegeräte an ein und derselben Stelle ablesen oder registrieren. Aus dies--n Messungen kann man durch Vergleich die Differenz oder das Verhältnis der Tourenzahl bestimmen.Slip meter It is known to use it to measure numbers of revolutions. that a power generator is coupled to the axis in question and its current is measured. Since the display instrument of the current can be at any point, one can the number of revolutions of two axles using two reading devices at one and the same point read or register. The difference can be obtained from these - n measurements by comparing them or determine the ratio of the number of tours.

Es tritt aber öfter der Fall auf, daß man die gegenseitigen Beziehungen zweier Tourenzahlen nicht erst durch Vergleich zweier Ablestingen oder Kurven ermitteln. sondern unmittelbar ablesen oder registrieren will.But it often happens that one has mutual relations Do not first determine two numbers of revolutions by comparing two readings or curves. but wants to read or register immediately.

In diesem Falle ist es bekannt, die Differenz oder das Verhältnis der beiden Tourenzahlen dadur,7h zu messen. daß man die Ströme der beider. Stromerzeuger auf ein gemeinsames Instrument wirken läßt.In this case it is known the difference or the ratio of the two tour numbers dadur to measure 7h. that one is the currents of both. Power generator can work on a common instrument.

Soll das Verhältnis der beiden Tourenzahlen gemessen werden, so leitet man die Ströme der beiden Stromerzeuger je einer Spule eines Quotientenmessers, z. B. eins Iireuzspulohmmeters, zu. Die letztere Anordnung versagt dann, wenn das Tourenzahlverhältnis allzusehr schwankt, insbesondere, wenn das Tourenzahlverhältnis auch dann noch gemessen werden soll, wenn eine der Achsen stillsteht.If the ratio of the two numbers of revolutions is to be measured, then conducts the currents of the two power generators each one coil of a quotient meter, z. B. one Iireuzspulohmmeters, too. The latter arrangement fails if that The number of revolutions ratio fluctuates too much, especially when the number of revolutions ratio should also be measured when one of the axes is at a standstill.

Erfindungsgemäß trifft man in diesem Falle eine Anordnung, bei welcher jeder Stromerzeuger nicht nur die zugehörige Spule des Kreuzspulinstruments speist, sondern durch entsprechende Schaltungsverzweigungen auch einen Beitrag zu dem die andere Spule durchfließenden Strom liefert. Man kann hierbei von einer N ebenschluß- oder von einer Serienschaltung der Kreuzspule ausgehen, entsprechend den Abb. i und a. Aus diesen sieht man ohne weiteres, daß keine der Kreuzspulen s,, s_ stromlos wird, auch dann nicht, wenn nur einer der beiden Stromerzeuger Spannung liefert. Es ist ferner leicht zu übersehen, daß eine prozentuale gleiche Steigerung der Tourenzahl der beiden Stromerzeuger in allen Teilen des Schemas, also auch in den beiden Spulen s, und s., den Strom in gleicher Weise steigert. so daß das Verhältnis der beiden Spulenströme, welches durch das Kreuzspulinstrument angezeigt wird. eine eindeutige Funktion des Verhältnisses der Tourenzahlen ist, vorausgesetzt nur, daß die von den Stromerzeugern erzeugte Spannung proportional der Tourenzahl ist.According to the invention one meets in this case an arrangement in which each generator not only feeds the associated coil of the cross-coil instrument, but also make a contribution to the the through corresponding circuit branches supplies current flowing through the other coil. You can use a shunt or proceed from a series connection of the cheese, as shown in Fig. i and a. From these it can be seen without further ado that none of the cross-wound coils s ,, s_ are de-energized not even if only one of the two power generators is supplying voltage. It is also easy to overlook that an equal percentage increase in the number of tours of the two power generators in all parts of the scheme, including in the two coils s, and s., increases the current in the same way. so that the relationship of the two Coil currents displayed by the cross-coil instrument. a definite one Function of the ratio of the number of trips, provided only that the The voltage generated by the generators is proportional to the number of revolutions.

Befinden sich die mit den beiden Achsen gekuppelten Stromerzeuger auf sehr verschiedenen Temperaturen, so könnten Fehler in der Messung entstehen durch die verschiedenen Widerstandsänderungen der Wicklungen der Stromerzeuger. Diese können unschädlich gemacht werden, entweder durch entsprechend große zugeschaltete temperaturunabhängige Widerstände oder durch solche mit negativem Temperaturkoeffizienten durch eine der bei Meßinstrumenten üblichen Kunstschaltungen oder aber dadurch, daß man jedem Stromerzeuger einen Kupferwiderstand vorschaltet,welchergleich seinemeigenenKupferwi@derstand ist, und diesen Kupferwiderstand neben dem anderen Induktor anbringt, so da13 jeder Stromerzeugerwiderstand sich aus zwei Hälften zusammensetzt, deren eine die Temperatur des einen Stromerzeugers, die andere die Temperatur des anderen Stromerzeugers hat. Diese Zusatzwiderstände kann man auch aus einem anderen Material als Kupfer machen und ihnen eine andere Größe als die angegebene geben, wenn man nur die Größe dieser Widerstände so wählt, daß die Temperaturänderung eines Stromerzeugers und des zu der anderen Maschine gehörenden Zusatzwiderstandes die Größe beider Spulenströme im gleichen Verhältnis ändert.Are the power generators coupled to the two axles at very different temperatures, errors in the measurement could occur due to the various changes in resistance of the windings of the power generators. These can be made harmless, either by switching on appropriately large ones temperature-independent resistors or those with a negative temperature coefficient through one of the art circuits common with measuring instruments or through that he each generator is connected to a copper resistor, which is the same its own copper resistor, and this copper resistor next to the other Attaches an inductor so that each generator resistor is composed of two halves, one of which is the temperature of one generator, the other the temperature of the other generator. These additional resistors can also be obtained from another Make material than copper and give them a different size than the specified one, if one chooses only the size of these resistances so that the temperature change of a Power generator and the additional resistor belonging to the other machine The size of both coil currents changes in the same ratio.

Claims (1)

PATENTANSPRÜCHE: i. Einrichtung zumVergleich der Drehzahlen zweier Wellen, bei der jede der Wellen mit einem Gleich- oder Wechselstromerzeuger gekuppelt ist und diese gemeinsam auf ein Kreuzspulenohmmeter einwirken, dadurch gekennzeichnet, daß die Spulen des Ohmmeters untereinander und mit den Stromerzeugern über einen oder mehrere Widerstände so verbunden sind, daß auch bei Stillstand eines Stromerzeugers in beiden Spulen des Kreu,zspulsystems ein Strom fließt. a. Einrichtung nach Anspruch i, dadurch gekennzeichnet, daß zur Ausschaltung von Einflüssen der Temperatur auf die Stromerzeuger jedem Stromerzeuger ein temperaturabhängiger Widerstand zugeschaltet ist, welcher auf der Temperatur des anderen Stromerzeugers gehalten wird, und daß diese zugeschalteten Widerstände so abgeglichen sind, daß auch bei Änderungen der Temperatur des einen oder anderen Stromerzeugers und des bei ihm befindlichen Zusatzwiderstandes die Anzeige des Instruments nicht verändert wird.PATENT CLAIMS: i. Device for comparing the speeds of two Shafts in which each of the shafts is coupled to a direct or alternating current generator and these act together on a cross-coil ohmmeter, characterized in that that the coils of the ohmmeter with each other and with the power generators via a or several resistors are connected so that even when a power generator is at a standstill A current flows in both coils of the cross-coil system. a. Device according to claim i, characterized in that to eliminate the effects of temperature on the power generator switched a temperature-dependent resistor to each power generator is which is kept at the temperature of the other generator, and that these connected resistors are adjusted so that even with changes in the Temperature of one or the other power generator and the additional resistor located there the display of the instrument is not changed.
DE1930567036D 1930-11-21 1930-11-21 Slip knife Expired DE567036C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE567036T 1930-11-21

Publications (1)

Publication Number Publication Date
DE567036C true DE567036C (en) 1932-12-27

Family

ID=6567724

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930567036D Expired DE567036C (en) 1930-11-21 1930-11-21 Slip knife

Country Status (1)

Country Link
DE (1) DE567036C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE743445C (en) * 1939-03-12 1943-12-27 Siemens Ag Device for measuring and monitoring the percentage draft and the twists per unit length of the spun material in spinning and roving machines
DE759754C (en) * 1940-08-01 1953-05-04 Siemens Schuckertwerke A G Display or control device operating as a function of the difference between two speeds
DE933173C (en) * 1950-10-14 1955-09-22 Siemens Ag Test device, especially for electric traction vehicles, to display the rotary movement of a shaft
DE1055264B (en) * 1952-03-13 1959-04-16 Licentia Gmbh Device for measuring the ratio of the differential speed of two shafts to the speed of one of the two shafts
DE1099402B (en) * 1956-06-11 1961-02-09 Licentia Gmbh Arrangement for measuring the relative crank angle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE743445C (en) * 1939-03-12 1943-12-27 Siemens Ag Device for measuring and monitoring the percentage draft and the twists per unit length of the spun material in spinning and roving machines
DE759754C (en) * 1940-08-01 1953-05-04 Siemens Schuckertwerke A G Display or control device operating as a function of the difference between two speeds
DE933173C (en) * 1950-10-14 1955-09-22 Siemens Ag Test device, especially for electric traction vehicles, to display the rotary movement of a shaft
DE1055264B (en) * 1952-03-13 1959-04-16 Licentia Gmbh Device for measuring the ratio of the differential speed of two shafts to the speed of one of the two shafts
DE1099402B (en) * 1956-06-11 1961-02-09 Licentia Gmbh Arrangement for measuring the relative crank angle

Similar Documents

Publication Publication Date Title
DE567036C (en) Slip knife
CH198449A (en) Method and electrical measuring device for measuring alternating current quantities.
DE630173C (en) Device for measuring the inclination of bodies
DE455077C (en) Arrangement for displaying or registering the product of two variable measurement values
DE421481C (en) Device for determining or limiting the temperature of windings in electrical machines and apparatus
DE69201904T2 (en)  Device for controlling a cross-coil instrument.
DE718305C (en) Device for determining the path components of a ship
DE609736C (en) Device for temperature measurement with the aid of a resistance thermometer fed with alternating current
DE558393C (en) Device for displaying and controlling the ratio of measured quantities
DE656466C (en) Adjustable inductive resistance as a transmitter for the remote transmission of measured values
DE640601C (en) Device for determining the degree of acidity according to the compensation method
DE701209C (en) Bridge measuring circuit for immediate display of the relative humidity or the temperature difference
DE549150C (en) Arrangement to compensate the operating voltage fluctuations with ohmmeters
DE507147C (en) Device for determining small changes in resistance with a Wheatstone bridge circuit and a cross-coil instrument
DE415532C (en) Arrangement for measuring the phase and translation error of transformers, preferably instrument transformers
DE665186C (en) Device for testing voltage converters for their translation and angle errors by comparing them with normal converters, in which an auxiliary voltage is switched on, which is variable in terms of size and phase
DE398070C (en) Device for determining one of the three alternating current quantities: active power, reactive power and power factor or phase shift from the other two
DE491418C (en) Resistance measuring device based on the differential wattmeter principle
DE475071C (en) Method for the electrical summation of variable measured quantities
DE608104C (en) Device for checking the phase equality between current and voltage on a line element consisting of two opposing parts of a double line
DE520004C (en) Device for determining small changes in resistance with a Wheatstone bridge circuit and a cross-coil instrument
DE715155C (en) Arrangement for temperature compensation of electrical quotient meters
DE413069C (en) Electrical measuring device
DE592060C (en) Deflection measuring device for displaying the product or the quotient of electrical measured quantities using measuring mechanisms, the deflection of which is proportional to the logarithm of the supplied measured quantity
DE547453C (en) Device for measuring electrical resistances by means of a cross-coil device