FI98093C - Apparatus for measuring fluid flow - Google Patents
Apparatus for measuring fluid flow Download PDFInfo
- Publication number
- FI98093C FI98093C FI952363A FI952363A FI98093C FI 98093 C FI98093 C FI 98093C FI 952363 A FI952363 A FI 952363A FI 952363 A FI952363 A FI 952363A FI 98093 C FI98093 C FI 98093C
- Authority
- FI
- Finland
- Prior art keywords
- measuring
- vessel
- pipe
- tube
- liquid
- 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
- G01F23/14—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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/52—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring the height of the fluid level due to the lifting power of the fluid flow
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Description
9809398093
LAITTEISTO NESTEVIRTAUKSEN MITTAAMISEKSIAPPARATUS FOR MEASURING FLUID FLOW
Keksinnön kohteena on patenttivaatimuksen 1 johdanto-osan 5 mukainen laitteisto.The invention relates to an apparatus according to the preamble of claim 1.
Tunnetaan ratkaisu, jossa kanavaan on järjestetty pato, jonka aiheuttama nestepinnan nousu mitataan. Pinnankorkeus on verrannollinen virtaamaan matemaattisen kaavan tai kalibrointimit-10 tauksilla saadun käyrän mukaan. Haluttaessa mitata osittain täynnä olevaa putkea täytyy tunnetulle mittarille järjestää pitkä vaakasuora putkiosuus, jotta saavutetaan tarkka mittaustulos .A solution is known in which a dam is arranged in the channel, the rise of the liquid level caused by which is measured. The surface height is proportional to the flow according to a mathematical formula or a curve obtained with calibration measures. If it is desired to measure a partially filled pipe, a long horizontal pipe section must be provided for the known meter in order to achieve an accurate measurement result.
15 Tämän keksinnön tarkoituksena on aikaansaada täysin uudenlainen laitteisto, jossa pystysuoraan tai vinoon putkeen kytketty virtausmittaus antaa tarkan tuloksen riippumatta laitteen päällä olevasta pudotuskorkeudesta.The object of the present invention is to provide a completely new type of apparatus in which a flow measurement connected to a vertical or oblique tube gives an accurate result regardless of the drop height on top of the apparatus.
20 Keksintö perustuu ajatukseen, jossa putkeen on asennettu säiliö, jonka sisällä on patovirtausmittaus.The invention is based on the idea in which a tank with a dam flow measurement is installed in the pipe.
Täsmällisemmin määriteltynä keksinnölle on tunnusomaista se, mitä on mainittu patenttivaatimuksissa.More specifically, the invention is characterized by what is stated in the claims.
2525
Keksinnöllä on lukuisia merkittäviä etuja. Laitteiston avulla saavutetaan tarkka ja hyvin toistettava virtausmittaus esimerkiksi paperikoneen viira- ja puristinosan poistoränneistä. Laitteisto voidaan helposti asentaa ilman suuria muutoksia 30 putkistoissa. Edullisimmin tarvitsee ainoastaan poistaa mittarin pituinen osa putkesta ja liittää mittari poistetun osan tilalle. Nopealla asennuksella minimoituu prosessin seisonta-aika.The invention has numerous significant advantages. The equipment achieves an accurate and well-reproducible flow measurement of, for example, the outlet troughs of the wire and press section of a paper machine. The equipment can be easily installed without major changes to the 30 piping. Most preferably, all you need to do is remove the length of the meter from the tube and replace the meter with the removed part. Fast installation minimizes process downtime.
2 980932 98093
Seuraavassa keksintöä selostetaan viittaamalla oheiseen kuvioon, joka esittää leikattuna ja yksinkertaistettuna erästä keksinnön mukaista laitteistoa.In the following, the invention will be described with reference to the accompanying figure, which shows a section and a simplified view of an apparatus according to the invention.
5 Laitteisto käsittää rungon 12, jonka yläosaan on liitetty tuloputki 8 ja alaosaan poistoputki 11. Rungon sisäpuolella olevaan kammioon on järjestetty seinämä 2, johon on muodostettu aukko 1. Seinämä 2 muodostaa ns. patoastian, johon neste johdetaan tuloputkesta 8. Laitteisto perustuu ns. pato-menetelmään, 10 jossa vedenpinta patoastiassa nousee kun sinne johdettu vesimäärä lisääntyy. Veden pinnankorkeutta mitataan mittaelimellä 3, esimerkiksi paine-erolähettimellä. Kammioon virtaava neste nostaa astiassa painetta. Lisäksi putkessa saattaa olla alipainetta. Tämä johtaa virheelliseen mittaustulokseen. Virhe 15 eliminoidaan paineen kompensointiputkeila 4, jolla nestepatsaan päällä vaikuttava paine johdetaan lähettimen 3 negatiiviselle puolelle. Nesteen kondensoitumisen estämiseksi ja mahdollisten kompensointiputkeen joutuvien roiskeiden vaikutusten vähentämiseksi on järjestetty poistoputki 5 lähettimestä patoastian 20 alapuolelle.The apparatus comprises a body 12, to the upper part of which an inlet pipe 8 is connected and to the lower part an outlet pipe 11. A wall 2 is arranged in the chamber inside the body, in which an opening 1 is formed. a dam vessel to which the liquid is led from the inlet pipe 8. The apparatus is based on a so-called to the dam method, 10 in which the water level in the dam vessel rises as the amount of water introduced therein increases. The water level is measured by a measuring element 3, for example a differential pressure transmitter. The liquid flowing into the chamber increases the pressure in the vessel. In addition, there may be a vacuum in the pipe. This results in an incorrect measurement result. The error 15 is eliminated by means of a pressure compensation pipe 4, by means of which the pressure acting on the liquid column is conducted to the negative side of the transmitter 3. In order to prevent condensation of the liquid and to reduce the effects of possible splashes on the compensation pipe, an outlet pipe 5 is arranged from the transmitter below the dam vessel 20.
Patoastiasta sen alaosasta on järjestetty yhde 6 mittaelimeen 3. Neste liikkuu myös mittayhteen 6 suuntaisesti. Tämä dynaaminen paine on sitä suurempi mitä suurempi pudotuskorkeus on 25 laitteen päällä. Tämä virhetekijä on eliminoitu järjestämällä patoastiaan levy 7 yhteen 6 suuaukon läheisyyteen sen eteen.A connection 6 is arranged from the lower part of the dam vessel to the measuring element 3. The liquid also moves in the direction of the measuring connection 6. This dynamic pressure is higher the higher the drop height on the top of the device. This error factor is eliminated by arranging the plate 7 in the dam vessel in the vicinity of the 6 orifices in front of it.
Patoastiaan tuloputkesta 8 saapuvan nesteen virtausnopeutta on pienennetty järjestämällä tuloputkeen supistus 9 ja/tai järjes-30 tämällä putkeen 8 ainakin yksi sopivimmin poikittaissuuntainen hidastuslevy 10.The flow rate of the liquid entering the dam vessel from the inlet pipe 8 is reduced by providing a constriction 9 in the inlet pipe and / or by arranging in the pipe 8 at least one preferably transverse deceleration plate 10.
98093 398093 3
Patoastiaan on lisäksi edullisesti järjestetty ainakin yksi levy 14, joka ohjaa virtauksen siten, että se on hallittu astian sisällä.In addition, the dam vessel is preferably provided with at least one plate 14 which directs the flow so that it is controlled inside the vessel.
5 Keksintö toimii seuraavasti: Tuloputkessa johdetaan nestettä laitteeseen. Virtausnopeutta hidastetaan levyillä 10 ja supistuksella 9. Hidastuksen jälkeen neste joutuu patoastiaan, jossa on tarkasti kalibroitu pato, jonka muodostamaa pinnankorkeutta mitataan mittaelimellä kuten paine-erolähettimellä 3. Padon 10 jälkeen neste johdetaan poistoputkeen 11. Patoastiassa muodostuva yli- tai alipaine kompensoidaan lähettimen 3 negatiiviselta puolelta kammion yläosaan järjestetyn putken 4 avulla. Tähän putkeen 4 mahdollisesti muodostuva neste johdetaan laitteen poistopuolelle, sopivimmin poistoputkeen 11 siten, ettei se 15 häiritse mittaelimen 3 toimintaa edullisesti putken 5 välityksellä. Tämä on edullisesti toteutettu siten, että putken 4 osa tai erillinen yhdysputki 13 on järjestetty lähettimeen 3 siten, että siinä on pieni kaato poispäin lähettimestä.The invention works as follows: A liquid is introduced into the device in the inlet pipe. The flow rate is decelerated by plates 10 and shrinkage 9. After deceleration, the liquid enters a dam vessel with a precisely calibrated dam, the level of which is measured by a measuring device such as a differential pressure transmitter 3. After the dam 10 by means of a tube 4 arranged at the top of the chamber. Any liquid formed in this pipe 4 is led to the outlet side of the device, preferably to the outlet pipe 11, so that it does not interfere with the operation of the measuring element 3, preferably via the pipe 5. This is preferably implemented in such a way that a part of the pipe 4 or a separate connecting pipe 13 is arranged in the transmitter 3 so that it has a small drop away from the transmitter.
20 Patoastian sisällä liikkuva neste ei häiritse lähettimen toimintaa, koska yhteen 6 eteen on järjestetty estolevy 7.The liquid moving inside the dam vessel does not interfere with the operation of the transmitter, because a blocking plate 7 is arranged in front of one of the 6.
Keksinnön mukainen mittalaite soveltuu erityisesti paperiteollisuuden, erityisesti paperikoneen puristin- ja viiraosan 25 vesimäärien mittaukseen.The measuring device according to the invention is particularly suitable for measuring the water volumes of the paper industry, in particular of the press and wire section 25 of a paper machine.
Alan ammattimiehelle on selvää, ettei keksintö ole rajoitettu edellä esitettyihin sovellutusmuotoihin, vaan sitä voidaan vaihdella oheisten patenttivaatimusten puitteissa.It will be clear to a person skilled in the art that the invention is not limited to the embodiments described above, but can be varied within the scope of the appended claims.
3030
Claims (9)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI952363A FI98093C (en) | 1995-05-15 | 1995-05-15 | Apparatus for measuring fluid flow |
PCT/FI1996/000268 WO1996036851A1 (en) | 1995-05-15 | 1996-05-13 | Apparatus for the measurement of liquid flow |
AU56513/96A AU5651396A (en) | 1995-05-15 | 1996-05-13 | Apparatus for the measurement of liquid flow |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI952363 | 1995-05-15 | ||
FI952363A FI98093C (en) | 1995-05-15 | 1995-05-15 | Apparatus for measuring fluid flow |
Publications (3)
Publication Number | Publication Date |
---|---|
FI952363A0 FI952363A0 (en) | 1995-05-15 |
FI98093B FI98093B (en) | 1996-12-31 |
FI98093C true FI98093C (en) | 1997-04-10 |
Family
ID=8543421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI952363A FI98093C (en) | 1995-05-15 | 1995-05-15 | Apparatus for measuring fluid flow |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU5651396A (en) |
FI (1) | FI98093C (en) |
WO (1) | WO1996036851A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5875675A (en) * | 1997-09-24 | 1999-03-02 | Ecopump Oy | Apparatus for the measurement of liquid flow |
DE102005048053A1 (en) * | 2005-10-07 | 2007-04-12 | Voith Patent Gmbh | Measuring device, in particular for measuring dewatering quantities of paper machines |
FI127472B (en) * | 2017-02-02 | 2018-06-29 | Runtech Systems Oy | Device to measure dewatering at various objects in a paper machine wet end, and method for carrying out this |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE318123B (en) * | 1967-12-21 | 1969-12-01 | Gambro Ab | |
DE1806654A1 (en) * | 1968-11-02 | 1970-05-21 | Gerdts Gustav F Kg | Device for measuring the flow rate of fluids under pressure |
DE2447261A1 (en) * | 1974-10-03 | 1976-04-08 | Reuschenbach Hermann | Flowmeter determining volumetric flow of liquids by pressure chamber - is used especially to measure milk flow in dairy installations |
DE3740603A1 (en) * | 1987-12-01 | 1989-06-15 | Eckardt Ag | Device for measuring the volume flow of a liquid flowing out of or into an open container |
DE4133542A1 (en) * | 1991-10-10 | 1993-04-15 | Manfred Husslein | Stationary measurement device for monitoring internal combustion engine fuel consumption - has vertical measurement tube with e.g. differential pressure transducer at lower end |
-
1995
- 1995-05-15 FI FI952363A patent/FI98093C/en not_active IP Right Cessation
-
1996
- 1996-05-13 WO PCT/FI1996/000268 patent/WO1996036851A1/en active Application Filing
- 1996-05-13 AU AU56513/96A patent/AU5651396A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
WO1996036851A1 (en) | 1996-11-21 |
FI98093B (en) | 1996-12-31 |
AU5651396A (en) | 1996-11-29 |
FI952363A0 (en) | 1995-05-15 |
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Date | Code | Title | Description |
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FG | Patent granted |
Owner name: ECOPUMP OY |
|
BB | Publication of examined application | ||
MA | Patent expired |