DE334515C - Device to use electricity counters to make devices for registering the level of liquids or the change in position of parts, which change the electrical resistance of a circuit through their movement, independent of fluctuations in the mains voltage or the power source - Google Patents
Device to use electricity counters to make devices for registering the level of liquids or the change in position of parts, which change the electrical resistance of a circuit through their movement, independent of fluctuations in the mains voltage or the power sourceInfo
- Publication number
- DE334515C DE334515C DE1919334515D DE334515DD DE334515C DE 334515 C DE334515 C DE 334515C DE 1919334515 D DE1919334515 D DE 1919334515D DE 334515D D DE334515D D DE 334515DD DE 334515 C DE334515 C DE 334515C
- Authority
- DE
- Germany
- Prior art keywords
- change
- circuit
- mains voltage
- fluctuations
- independent
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
- G01F23/241—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid for discrete levels
- G01F23/243—Schematic arrangements of probes combined with measuring circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
- G01F23/18—Indicating, recording or alarm devices actuated electrically
-
- 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
- G01L9/0091—Transmitting or indicating the displacement of liquid mediums by electrical, electromechanical, magnetic or electromagnetic means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Flow Control (AREA)
Description
Einrichtung, um Vorrichtungen zur Registrierung des Höhenstandes von Flüssigkeiten oder der Lagenveränderung von Teilen, die durch ihre Bewegung den elektrischen Widerstand eines Stromkreises verändern, durch Elektrizitätszähler von den Schwankungen der Netzspannung oder der Stromquelle unabhängig zu machen. Es sind Vorrichtungen zur Registrierung des Höhenstandes von Flüssigkeiten bekannt, bei (lenen ein Widerstandskreis durch den Stand der Flüssigkeit verändert wird und in diesen Kreis zur Registrierung ein Elektrizitätszähler eingeschaltet ist. Beispielsweise ist zu einem Dampfrohr ein Nebenschluß gelegt, in welchem also der Dampfdruck proportional der im Hauptrohr strömenden Dampfmenge ist. Dieser Dampfdruck drückt auf eine Quecksilbersäule, diese schließt einen Stufenwiderstand mehr oder weniger kurz, und der Zähler im Widerstandskreis erhält also mehr oder weniger Strom, je nach der Dampfmenge, die verbraucht wird. Der Zähler registriert also den Dampfverbrauch.Device for devices for registering the height of Liquids or the change in the position of parts that cause the Change the electrical resistance of a circuit by means of an electricity meter to make it independent of the fluctuations in the mains voltage or the power source. Devices for registering the level of liquids are known, at (where a resistance circuit is changed by the level of the liquid and An electricity meter is switched on in this circuit for registration. For example there is a shunt connected to a steam pipe, in which the steam pressure is proportional is the amount of steam flowing in the main pipe. This vapor pressure presses on a column of mercury this more or less short-circuits a step resistor, and the counter im So resistance circuit receives more or less current, depending on the amount of steam that is consumed. The meter registers the steam consumption.
Diese Apparate werden gern an ein vorhandenes Leitungsnetz angeschlossen. Störend wirken dann die Spannungsschwankungen im Netz, die Fehler in die Angaben des Zählers hineinbringen, da naturgemäß die Widerstandsänderungen durch die steigende und fallende Quecksilbersäule von Stufe zu Stufe nur gering sein können.These devices are often connected to an existing line network. The voltage fluctuations in the network and the errors in the information then have a disruptive effect of the meter, since naturally the resistance changes due to the increasing and falling mercury from stage to stage can only be small.
Um den Apparat von den Spannungsschwankungen unabhängiger zu machen, hat man bisher in die Zuleitung zu jeder Widerstandsstufe einen Eisenwiderstand (Variator)-eingebaut. Da man beispielsweise 36 Widerstandsstufen hat, so brauchte man 36 Variatoren, die den Apparat erheblich verteuern.In order to make the apparatus more independent of the voltage fluctuations, So far you have an iron resistor in the supply line to each resistance level (Variator) -built-in. For example, since you have 36 resistance levels, so needed 36 variators, which make the device considerably more expensive.
Gemäß vorliegender Erfindung werden die Angaben des Elektrizitätszählers von den Spannungsschwankungen im Netz dadurch unabhängig gemacht, daß - der Zähler nicht durch einen Dauermagneten, sondern durch einen von der Netzspannung erregten Elektromagneten gebremst wird.According to the present invention, the data from the electricity meter made independent of the voltage fluctuations in the network that - the counter not by a permanent magnet, but by one excited by the mains voltage Electromagnet is braked.
In diesem Fälle ist das bremsende Moment DB -K#E2#u, wo K eine Konstante, E die Netzspannung und ic die Umdrehungszahl der Bremsscheibe ist.In this case the braking torque is DB -K # E2 # u, where K is a constant, E is the mains voltage and ic is the number of revolutions of the brake disc.
Das treibende Moment ist D-Kl-E#J, wo K, eine Konstante und J der Hauptstrom ist. Also ist K.E2#is=Ki.E#J oder Für einen bestimmten Widerstand W des Hauptstromkreises ist also d. h. bei einem bestimmten Widerstand W bleibt die Tourenzahl des Zählers konstant, gleichgültig, welchen Wert diie Netzspannung E hat.The driving moment is D-Kl-E # J, where K, is a constant and J is the main stream. So K.E2 # is = Ki.E # J or For a given resistance W of the main circuit is so ie with a certain resistance W the number of revolutions of the counter remains constant, regardless of the value of the mains voltage E.
Dieses gilt sowohl bei Gleichstrom-Wattstundenzählern wie auch für Wechselstrom-Induktionszähler, wenn die bremsenden Momente der Triebfelder gegen das treibende Moment derselben vernachlässigt werden können, wie das meist der Fall ist.This applies both to direct current watt-hour meters and to AC induction meter, if the braking moments of the drive fields counteract the driving force of the same can be neglected, as is usually the case is.
In der Zeichnung ist die Anordnung im Schema am Beispiel eines registrierenden Dampfmessers dargestellt.In the drawing, the arrangement in the scheme is based on the example of a registering Steam meter shown.
Eine Quecksilbersäule I in einem U-förmigen Rohr wird durch den Dampfdruck mehr oder weniger gehoben und schließt dabei einen Stufenwiderstand 2 mehr oder weniger kurz. Im Widerstandskreis ist ein Elektrizitätszähler 3, 4, 5 eingebaut, und zwar liegt der Hauptstromtriebkern 3 in Reihe mit dem Stufenwiderstand-->, zweckmäßig an den Sekundärklemmen eines Transformators 6, während der Spannungstriebkern 4 an der Netzspannung liegt. An der gleichen Netzspannung liegt erfindungsgemäß der Bremsmagnet 5 des Zählers.A column of mercury I in a U-shaped tube is created by the vapor pressure more or less raised and includes a step resistance 2 or more less short. An electricity meter 3, 4, 5 is built into the resistance circuit, namely, the main current drive core 3 is in series with the step resistance ->, expedient at the secondary terminals of a transformer 6, while the voltage drive core 4 is due to the mains voltage. According to the invention, the is at the same mains voltage Brake magnet 5 of the counter.
Da man bei dieser Anordnung ein Triebsystem 3, 4 und ein Bremssystem 5 hat, die beide von den elektrischen Verhältnissen abhängig-sind, so kann man natürlich den veränderlichen Widerstand statt in den Stromkreis des Triebsystems auch in den Stromkreis des Bremssystems, also in den Dämpfungskreis des Bremsmagneten 5 legen. Man erhält dann einen Elektrizitätszähler für konstanten Strom, bei dem das Bremsmoment durch den Höhenstand der Flüssigkeit verändert wird. Der Erfolg ist der gleiche.Since this arrangement has a drive system 3, 4 and a braking system 5, both of which are dependent on the electrical conditions, one can of course the variable resistance instead of in the circuit of the drive system also in the Place the circuit of the brake system, i.e. in the damping circuit of the brake magnet 5. An electricity meter for constant current is then obtained, with which the braking torque is changed by the level of the liquid. The success is the same.
Beide Momente, das treibende und das bremsende werden in gleichem Maße von den Schwankungen der Netzspannung oder Stromquelle beeinflußt, .die Zählerangaben sind also auch in diesem Fall von den Schwankungen der Netzspannung unabhängig.Both moments, the driving and the braking, become the same Dimensions influenced by fluctuations in the mains voltage or power source, .the meter information are therefore also independent of the fluctuations in the mains voltage in this case.
Das angegebene Prinzip ist nicht auf die Registrierung des Höhenstandes von Flüssigkeiten beschränkt, sondern kann beispielsweise für Dampfmesser mit Schwebekegel, bei denen der durchströmende Dampf einen Ventilkegel je nach der Dampfmenge mehr oder weniger hebt, oder bei irgendwelchen anderen Apparaten angewendet wird, bei denen durch Bewegung von Teilen elektrische Widerstände verändert werden.The stated principle is not based on the registration of the altitude limited by liquids, but can be used, for example, for steam meters with a floating cone, in which the steam flowing through a valve cone depending on the amount of steam more or less, or applied to any other apparatus to which electrical resistances are changed by moving parts.
Die Widerstandsänderung des Stromkreises braucht nicht durch Veränderung des Ohmschen Widerstands, sondern kann auch durch Veränderung des induktiven Widerstands oder der Kapazität geschehen, wie bereits bekannt ist.The change in resistance of the circuit does not need to be changed of the ohmic resistance, but can also be achieved by changing the inductive resistance or the capacity happen, as is already known.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE334515T | 1919-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE334515C true DE334515C (en) | 1921-08-27 |
Family
ID=6216871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1919334515D Expired DE334515C (en) | 1919-04-13 | 1919-04-13 | Device to use electricity counters to make devices for registering the level of liquids or the change in position of parts, which change the electrical resistance of a circuit through their movement, independent of fluctuations in the mains voltage or the power source |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE334515C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE745839C (en) * | 1940-03-31 | 1944-11-30 | Pressure measuring device |
-
1919
- 1919-04-13 DE DE1919334515D patent/DE334515C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE745839C (en) * | 1940-03-31 | 1944-11-30 | Pressure measuring device |
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