GB348940A - - Google Patents
Info
- Publication number
- GB348940A GB348940A GB19876/30A GB1987630A GB348940A GB 348940 A GB348940 A GB 348940A GB 19876/30 A GB19876/30 A GB 19876/30A GB 1987630 A GB1987630 A GB 1987630A GB 348940 A GB348940 A GB 348940A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oscillations
- tongue
- container
- boiler
- frequency meter
- 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
- G01F23/28—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 the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
- G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Vibration Prevention Devices (AREA)
Abstract
348,940. Feedwater regulators for steam boilers. I. G. FARBENINDUSTRIE AKT.-GES, Frankfort-on- Main, Germany. June 30, 1930, No. 19876. Convention date, June 28, 1929. [Class 123 (ii).] The water level in a boiler is regulated by utilizing oscillations of the boiler, or an auxiliary container, which vary in frequency according to the level. In Fig. 1 a boiler 1 is connected elastically by tubes 2, 3 to an auxiliary container 4. The oscillations of the container 4, either produced by impulse or by the vibrations which usually occur in a boiler house, are indicated by a tongue frequency meter 5 and serve as a measure of the liquid level. The boiler 1 may be elastically supported, and the container 4 omitted. The oscillations of the container may be produced by impulses or blows either by hand or mechanically, or by an oscillation exciter which is adjusted to synchronize with the natural oscillations, e.g. by a tuned electric circuit. The oscillation exciter may have one or more constant frequencies, in which case the amplitudes of the forced oscillations developed vary according to the liquid level. The indications of the tongue frequency meter 5 may be transmitted to a distance by light rays, or by electrical means on the principle of the telephone. In another modification, Fig. 2, in which the liquid level is required to be kept at a level indicated by the tongue 7 of a frequency meter, selenium cells 9, 10 are exposed to light rays which are directed by the frequency meter 5. At least two adjacent tongues oscillate at the same time, the maximum amplitude passing from the tongue 7 to the tongues 6 or 8 according to the level variations. Light is directed to the cell 9 or 10 according to whether tongue 6 or tongue 8 possesses the greater amplitude, and each change in the balance of the Wheatstone bridge actuates a relay 12 which may control a feed pump. The change in the number of revolutions of the pump may act on a frequency meter 13, which may act on the cells 9, 10 in a direction to restore the balance. In another method for producing electrical oscillations from the oscillations of the container, the latter may influence electrical capacities or inductances in a circuit, and thermionic valves may be employed to actuate regulating apparatus at a distance.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE348940T | 1929-06-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB348940A true GB348940A (en) | 1931-05-21 |
Family
ID=31895239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB19876/30A Expired GB348940A (en) | 1929-06-28 | 1930-06-30 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB348940A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2466809A (en) * | 1944-05-15 | 1949-04-12 | Ranco Inc | Pressure measuring apparatus |
US2943476A (en) * | 1955-08-08 | 1960-07-05 | Simmonds Aerocessories Ltd | Liquid densitometers |
FR2522140A1 (en) * | 1982-02-23 | 1983-08-26 | Wiederaufarbeitung Von Kernbre | METHOD AND DEVICE FOR MEASURING LIQUID LEVEL IN CONTAINERS |
GB2146770A (en) * | 1983-09-17 | 1985-04-24 | David Henry Cornick | Device for determining liquid volume |
-
1930
- 1930-06-30 GB GB19876/30A patent/GB348940A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2466809A (en) * | 1944-05-15 | 1949-04-12 | Ranco Inc | Pressure measuring apparatus |
US2943476A (en) * | 1955-08-08 | 1960-07-05 | Simmonds Aerocessories Ltd | Liquid densitometers |
FR2522140A1 (en) * | 1982-02-23 | 1983-08-26 | Wiederaufarbeitung Von Kernbre | METHOD AND DEVICE FOR MEASURING LIQUID LEVEL IN CONTAINERS |
US4531405A (en) * | 1982-02-23 | 1985-07-30 | Deutsche Gesellschaft Fur Wiederaufarbeitung Von Kernbrennstoffen Mbh | Method and device for measuring the level of a fluid inside of a container |
GB2146770A (en) * | 1983-09-17 | 1985-04-24 | David Henry Cornick | Device for determining liquid volume |
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