WO2005031284A2 - Anordnung zur füllstandsmessung in einem mit einem peilrohr ausgestatteten tank - Google Patents
Anordnung zur füllstandsmessung in einem mit einem peilrohr ausgestatteten tank Download PDFInfo
- Publication number
- WO2005031284A2 WO2005031284A2 PCT/EP2004/010525 EP2004010525W WO2005031284A2 WO 2005031284 A2 WO2005031284 A2 WO 2005031284A2 EP 2004010525 W EP2004010525 W EP 2004010525W WO 2005031284 A2 WO2005031284 A2 WO 2005031284A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tank
- sounding
- arrangement
- arrangement according
- medium
- Prior art date
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
- G01F23/284—Electromagnetic waves
Definitions
- the invention relates to an arrangement for measuring a fill level of a medium in a tank equipped with a dip tube.
- Such arrangements are known, for example, from tank systems, where a dip tube open to the medium is provided in the tank for mechanical bearing of the fill level of the medium in the tank.
- a solder or something similar on a rope or a dipstick in the sighting tube is let down into the medium up to a defined contact point and then the covering of the soldering device with the medium is determined. Knowing the geometry of the tank interior, the desired level can be obtained in volume units or as a percentage.
- the dipstick usually extends deep into the tank and into the medium, but ends above the tank bottom.
- the above-described tanks with a dip tube are also known from ships in which the fill level of the medium is to be measured in a fuel, ballast or utility or cargo tank under the special conditions at sea.
- Level measurements in tanks of ships are already carried out with level measuring devices that work with microwave signals. The advantage of such measurements is that they are not dependent on the density or the temperature of the medium and not on a pressure in the tank.
- the invention has for its object to provide an arrangement which allows the level of a medium with a small DK value in the lower region of a level gauge to reliably in a tank equipped with a level gauge and by means of a level measuring device that works with microwave signals determine.
- This object is achieved by an arrangement for measuring a fill level of a medium in a tank equipped with a dip tube by means of a fill level measuring device which works with microwave signals, the
- Arrangement comprises a deflection device for deflecting the microwave signals in an end region of the sighting tube.
- the deflection device comprises a deflection plate.
- the deflection device is arranged at a predetermined angle to a longitudinal axis of the direction finder tube.
- the deflection device is an angled sheet.
- the fill level measuring device comprises a horn antenna which projects into the sighting tube.
- Yet another embodiment of the arrangement according to the invention has a Y-adapter for a soldering device in the sighting tube, a support for the soldering device which is permeable to microwaves being fitted in the region of the deflection device.
- Deflection device which is arranged in the lower region of the sighting pipe and / or between the end of the sighting pipe and the tank bottom, ensures that level measurements with microwave signals provide reliable results, even if the DK value of the medium to be measured in the tank is small.
- Another advantage of the invention is the possibility of combining the deflection device with a support for mechanical direction finders or solders, which is permeable to the microwave signals. This is important in such tank systems, where in addition to the level measurement with microwaves, value is also placed on the possibility of a mechanical level measurement.
- the invention is therefore particularly suitable for ships and in particular for tanks there, which are often filled with various media.
- Ship tanks in particular are often equipped with the dip tubes described.
- microwave level gauges can be easily attached to the dip tubes.
- a suitable Y-adapter which is installed underneath such a level measuring device, a side, lockable opening and access to the dipstick is made possible, so that even when installed Microwave level measuring device the possibility of a mechanical bearing measurement for level determination is retained.
- Figure 1 is a perspective view of an arrangement according to the invention for measuring a level of a medium in a tank equipped with a dip tube.
- FIG. 2 shows a detail of the arrangement according to FIG. 1 marked with “X” in FIG. 1;
- FIG. 3 shows a perspective illustration of a first exemplary embodiment of a deflection unit of the arrangement according to the invention for measuring a fill level on an enlarged scale
- FIG. 4 shows a perspective illustration of a second exemplary embodiment of a deflection unit of the arrangement according to the invention for measuring a fill level on an enlarged scale
- FIG. 5 shows a perspective illustration of a third exemplary embodiment of a deflection unit of the arrangement according to the invention for measuring a fill level on an enlarged scale.
- FIG. 1 shows an embodiment of an arrangement 10 for measuring a fill level according to the invention.
- This arrangement 10 comprises a dip tube 12, at the upper end 14 of which an adapter 16 is attached, on which a fill level measuring device 18 is attached.
- this is a level measuring device that works with microwave measurement signals.
- the dip tube 12 projects into a tank 50, for example a ship tank, which is illustrated here by a tank cap 52 and a tank bottom 54.
- the tank 50 is approximately half full with a medium 58, for example a liquid medium with a low DK value, e.g. Petrol, oil or LPG filled.
- a gas phase 60 is located above the medium 58.
- the dip tube is to be attached to the tank cap 52 in a soft manner.
- a Y-adapter 20 is provided below the adapter 16 for the fill-level measuring device 18 and enables a lockable access to the inside of the leveling tube 12. It is thus possible to introduce a mechanical direction finder, for example a solder or a probe, into the direction finder pipe 12 through the Y adapter 20 to determine the level of the medium 58, even when the level gauge 18 is installed.
- a deflection device preferably a deflection plate 24, is attached to the lower end 22 of the sighting tube 12.
- This baffle 24 undesired interference signals, which otherwise superimpose the useful signals recorded at the fill level measuring device 18, are prevented according to the invention or at least weakened to such an extent that the useful signals for determining the fill level can be clearly identified.
- the lower end 22 of the gauge tube 12, which is open for the medium 58, and the deflection device are marked as detail X in FIG. 1 and shown in more detail in FIG. 2.
- the path of the microwave signals used for level measurement is illustrated in FIG. 1 by a double arrow 56.
- the level measurement with microwave signals is sufficiently well known to the person skilled in the art, so that it is not discussed further here.
- Fig. 2 shows the dip tube 12 and its lower end 22 and the
- Baffle plate 24 which is mounted on the bottom by means of a clamp 30, a retaining web 25 (see FIG. 5) that is not visible due to the selected representation, which is mounted on the outside of the clamp 30, between the dip tube 12 and the clamp 30 or inside the dip tube 12 , Other attachments of the baffle 24 are of course not excluded.
- the baffle plate 24 is aligned with the longitudinal axis of the sighting tube 12 at a predetermined angle, for example 45 °.
- the baffle plate 24 is appropriately dimensioned so that it covers the cross section of the dip tube 12.
- Fig. 3 is a more detailed illustration of the lower end 22 of the dip tube 12, the baffle 24 and a slightly modified clamp 30 compared to the one shown in Fig. 2.
- a perforated pad 32 made of a material which is transparent to microwaves, preferably a suitable dielectric Material is inserted into the lower end 22 of the leveling tube 12 and on the one hand allows the medium 58 (see FIG. 1) to penetrate into the leveling tube 12 and, on the other hand, forms a support or barrier for a mechanical direction finder device which is inserted into the direction finder pipe 12 via the Y adapter 20 (see FIG. 1).
- the baffle plate 24, as already described, is either attached directly to the support 32 by means of its retaining web 25 and is clamped together with this in the leveling tube 12 by the clamp.
- the retaining web 25 can, however, also be fastened directly on the outside or inside of the clamp 30 and can thus be mounted together with it on or on the dip tube 12. Another possibility is to place the retaining web 25 between the dip tube 12 and the clamp 30 when the clamp 30 is applied and to fix it by tightening the clamp 30.
- FIG. 4 shows another embodiment of a deflection device according to the invention with a bend plate 26 which is angled in itself.
- the perforated support 32 made of a material which is permeable to microwaves is inserted into the lower end 22 of the dip tube 12.
- the angled baffle plate 26 is fastened by means of two brackets 28 attached to each side, preferably - and as shown in FIG. 4 - slightly angled sheet metal strips, which are clamped into the clamp 30.
- the advantage of this angled baffle 26 over the baffle 24 of FIGS. 2 and 3 is that it takes up less space under the lower end 22 with the same coverage of the cross section of the lower end 22 of the dip tube 12.
- FIG. 5 shows yet another embodiment of the deflection device according to the invention and the support for mechanical direction finders.
- a window 34 that is permeable to microwaves is provided in a sleeve 36.
- the baffle 24 known from FIGS. 2 and 3 is attached to the sleeve 36 via its retaining web 25 and is together with the Sleeve 36 and the window 34 placed on the dip tube 12 and fastened there.
- the window 34 is preferably made of a suitable dielectric material and is also perforated and thus allows the medium 58 (see FIG. 1) to penetrate into the dip tube 12, where its fill level can be measured.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Level Indicators Using A Float (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/572,800 US20070186645A1 (en) | 2003-09-23 | 2004-09-20 | Arrangement for fill level measurement in a tank equipped with a sounding tube |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10344259.6 | 2003-09-23 | ||
DE10344259A DE10344259A1 (de) | 2003-09-23 | 2003-09-23 | Anordnung zur Füllstandmessung in einem mit einem Peilrohr ausgestatteten Tank |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005031284A2 true WO2005031284A2 (de) | 2005-04-07 |
WO2005031284A3 WO2005031284A3 (de) | 2005-06-23 |
Family
ID=34384244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/010525 WO2005031284A2 (de) | 2003-09-23 | 2004-09-20 | Anordnung zur füllstandsmessung in einem mit einem peilrohr ausgestatteten tank |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070186645A1 (de) |
KR (1) | KR100798962B1 (de) |
DE (1) | DE10344259A1 (de) |
WO (1) | WO2005031284A2 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1764591A3 (de) * | 2005-09-14 | 2007-04-11 | Siemens Aktiengesellschaft | Vorrichtung zur Messung von Füllständen in einem Kraftstoffbehälter |
EP2647971A1 (de) * | 2012-04-04 | 2013-10-09 | VEGA Grieshaber KG | Füllstandmessgerät und Adapter mit Reflektor |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005053813B4 (de) * | 2005-11-11 | 2017-03-30 | Volkswagen Ag | Einrichtung zur Messung des Motorölpegels in der Ölwanne einer Brennkraftmaschine mit einem Ölpeilstab |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4503433A (en) * | 1980-12-12 | 1985-03-05 | U.S. Philips Corporation | Range measurement by means of frequency modulated continuous wave radar |
WO2001029523A1 (en) * | 1999-10-21 | 2001-04-26 | Saab Marine Electronics Ab | Apparatus for measuring the level in a container |
US6538598B1 (en) * | 2000-01-26 | 2003-03-25 | Ohmart Vega Corporation | Apparatus and method for liquid level measurement in a sounding tube |
WO2004068081A1 (en) * | 2003-01-29 | 2004-08-12 | Saab Rosemount Tank Radar Ab | Bottom reflector for a radar-based level gauge |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3906794A (en) * | 1973-09-12 | 1975-09-23 | Albert Shotmeyer | Device to indicate the contents in an underground liquid containing tank |
DE4419462C2 (de) * | 1994-06-05 | 1999-12-09 | Krohne Messtechnik Kg | Berührungsloser Füllstandsmesser |
CA2182836C (en) * | 1996-08-07 | 2000-07-25 | Milltronics Ltd. | Probe for use in time domain reflectometry |
AU6756198A (en) * | 1996-10-07 | 1998-06-22 | Berwind Corporation | Material interface level sensing |
DE29709926U1 (de) * | 1997-06-08 | 1997-08-21 | Sailer, Josef, 87474 Buchenberg | System zum Erfassen von Füllständen |
US5943908A (en) * | 1997-09-08 | 1999-08-31 | Teleflex Incorporated | Probe for sensing fluid level |
US6292131B1 (en) * | 2000-01-26 | 2001-09-18 | Ohmart - Vega, Inc. | Apparatus and method for liquid level measurement and content purity measurement in a sounding tube |
US6337655B1 (en) * | 2000-01-26 | 2002-01-08 | Ohmart Vega Corporation | Apparatus and method for liquid level measurement in a sounding tube |
US6353407B1 (en) * | 2001-03-22 | 2002-03-05 | The United States Of America As Represented By The Secretary Of The Navy | Radar tank level indicating system for measurement of water content in shipboard tank involving identification of fuel-water interface |
US6795015B2 (en) * | 2003-01-29 | 2004-09-21 | Saab Rosemount Tank Radar Ab | Bottom reflector for a radar-based level gauge |
-
2003
- 2003-09-23 DE DE10344259A patent/DE10344259A1/de not_active Withdrawn
-
2004
- 2004-09-20 KR KR1020067005618A patent/KR100798962B1/ko not_active IP Right Cessation
- 2004-09-20 WO PCT/EP2004/010525 patent/WO2005031284A2/de active Application Filing
- 2004-09-20 US US10/572,800 patent/US20070186645A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4503433A (en) * | 1980-12-12 | 1985-03-05 | U.S. Philips Corporation | Range measurement by means of frequency modulated continuous wave radar |
WO2001029523A1 (en) * | 1999-10-21 | 2001-04-26 | Saab Marine Electronics Ab | Apparatus for measuring the level in a container |
US6538598B1 (en) * | 2000-01-26 | 2003-03-25 | Ohmart Vega Corporation | Apparatus and method for liquid level measurement in a sounding tube |
WO2004068081A1 (en) * | 2003-01-29 | 2004-08-12 | Saab Rosemount Tank Radar Ab | Bottom reflector for a radar-based level gauge |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1764591A3 (de) * | 2005-09-14 | 2007-04-11 | Siemens Aktiengesellschaft | Vorrichtung zur Messung von Füllständen in einem Kraftstoffbehälter |
EP2647971A1 (de) * | 2012-04-04 | 2013-10-09 | VEGA Grieshaber KG | Füllstandmessgerät und Adapter mit Reflektor |
Also Published As
Publication number | Publication date |
---|---|
KR20060082869A (ko) | 2006-07-19 |
WO2005031284A3 (de) | 2005-06-23 |
DE10344259A1 (de) | 2005-05-12 |
KR100798962B1 (ko) | 2008-01-28 |
US20070186645A1 (en) | 2007-08-16 |
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