EP1180600A2 - Verfahren und Vorrichtung zur Ermittlung der Fördermenge einer Kreiselpumpe - Google Patents
Verfahren und Vorrichtung zur Ermittlung der Fördermenge einer Kreiselpumpe Download PDFInfo
- Publication number
- EP1180600A2 EP1180600A2 EP01117988A EP01117988A EP1180600A2 EP 1180600 A2 EP1180600 A2 EP 1180600A2 EP 01117988 A EP01117988 A EP 01117988A EP 01117988 A EP01117988 A EP 01117988A EP 1180600 A2 EP1180600 A2 EP 1180600A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- impeller
- pump
- centrifugal pump
- delivery
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 17
- 238000005259 measurement Methods 0.000 title claims description 11
- 238000009530 blood pressure measurement Methods 0.000 claims abstract description 6
- 238000011156 evaluation Methods 0.000 claims description 14
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
Definitions
- the invention relates to a method for determining by an impeller delivered volume of a centrifugal pump integrated in a conveyor system, wherein pressure measurements made within the conveyor system by a Evaluation logic in each case corresponding, determined in an original measurement Production quantities can be assigned.
- This type of delivery quantity determination is basically from US 4,821,580 known.
- the device taught there measures the pressure in the area in front of the suction line of a centrifugal pump and in its pressure line performed.
- the pressures recorded are stored in a computer and possibly together with other inputs for the determination of certain Data, such as the delivery rate, evaluated.
- the kind used here the measurement is comparable to determining the pump characteristic on a Test bench.
- the invention has for its object a method of the aforementioned Kind and to create a device using this method, which when fulfilled the basic requirement of low effort also one unstable or flat pump characteristics, accurate determination of the delivery rate provide.
- the task is solved in that for determining the delivery rate that of influences of the pump housing and any control devices Impaired pressure build-up of the impeller is used.
- the solution according to the invention takes advantage of the fact that the impeller in comparison only slight losses to a pump housing or a control device caused. So there is no interference with the measurement Formation of an unstable characteristic.
- the suction-side system pressure changes with the removal. Therefore this pressure must be taken into account when determining the delivery rate become. This can be done using known system data or using one on the Pump suction side arranged pressure sensor happen.
- One for carrying out the method according to the invention in one closed circuit suitable device can with the help of an pressure side wheel side space of the centrifugal pump arranged pressure sensor, which with an evaluation device for determining the delivery rate connected, can be realized.
- the method according to the invention works reliably and with good accuracy, since the static pressure measured in the pressure-side wheel side space is approximately results in a steadily falling straight line across the entire flow rate. It is thus a clear connection between the measured pressure and the Delivery rate given.
- the method according to the invention requires only a comparatively small one Effort for determining the delivery rate. Still, it stands out compared to the known methods by a higher accuracy. this applies both changing compared to the complex differential pressure measurement Cross-sections as well as compared to the other methods described, since due to the elimination of main loss paths, no unstable course of the Characteristic results.
- the housing 1 of the centrifugal pump shown in FIG. 1 has an inlet 2 and an outlet 3.
- An impeller 5 attached to a shaft 4 is in the Housing 1 arranged.
- a pressure sensor 7 is located in the pressure-side wheel side space 6 of the housing 1 provided, which is connected via a line 8 to an evaluation device 9.
- a pressure sensor 10 is in front of the inlet 2 of the Housing 1 arranged. Via a line - also shown in dashed lines 11, the pressure sensor 10 is connected to the evaluation device 9.
- the pressure sensor 10 is arranged in a pipeline 12, which to one - not here illustrated - tank leads. So this is an open system.
- the liquid in the tank promoted via the outlet 3 to a - not shown - mouth. Since the decreasing liquid levels in the tank to a corresponding continued Pressure reduction in front of the inlet 2 of the centrifugal pump must be through the Impeller 5 causes pressure increase due to a differential pressure formation of the values of sensors 7 and 10 are determined.
- One of the different flow rates attributable pressure increase of the impeller 5 is in an original measurement determined and stored in the evaluation device 9. The saved Information is used to determine the delivery rate.
- FIG. 2 shows the relationship between the delivery rate and the Pressure build-up of the pump and the impeller can be seen.
- the characteristic curves of FIG. 2 are centrifugal pumps with an impeller of two different ones Calibration diameter. So the characteristics 13 and 14 refer to the first impeller and the characteristic curves 15 and 16 on the second impeller.
- the characteristic curves 13 and 15 are pump characteristic curves, which are determined by a differential pressure measurement determined between the suction and pressure ports of the centrifugal pumps were.
- the characteristic curves 13 and 15 have an unstable course and are therefore unsuitable for determining the delivery rate.
- the characteristic curves 14 and 16 are impeller characteristic curves which are represented by a Pressure transducers 7 were determined. Their course is clearly stable. Therefore are these characteristics are suitable for a precise determination of the delivery rate.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Centrifugal Separators (AREA)
Abstract
Description
- Fig.1
- einen Meridianschnitt durch eine Kreiselpumpe und durch Teile einer Anlage, bei denen das erfindungsgemäße Verfahren benutzt wird;
- Fig. 2
- die Kennlinien zweier Kreiselpumpen und die zugehörigen Druckverläufe der jeweiligen Laufräder.
Claims (7)
- Verfahren zur Ermittlung der durch ein Laufrad erbrachten Fördermenge einer in ein Fördersystem integrierten Kreiselpumpe, wobei innerhalb des Fördersystems vorgenommene Druckmessungen durch eine Auswertelogik jeweils entsprechenden, in einer Ursprungsmessung festgestellten Fördermengen zugeordnet werden, dadurch gekennzeichnet, daß zur Bestimmung der Fördermenge der von Einflüssen des Pumpengehäuses (1) und etwaiger Leiteinrichtungen nicht beeinträchtigte Druckaufbau des Laufrades (5) herangezogen wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Druckaufbau des Laufrades (5) an einem auf der Pumpendruckseite in der Nähe des Laufradaustrittes und vor dem Eintritt in strömungsleitende Elemente gelegenen Meßpunkt (7) erfaßt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Druckaufbau des Laufrades (5) an einem im druckseitigen Radseitenraum (6) der Kreiselpumpe gelegenen Meßpunkt (7) erfaßt wird.
- Verfahren nach einem der Ansprüche 1 bis 3 zur Durchführung bei einer Anlage mit konstantem saugseitigen Anlagendruck, dadurch gekennzeichnet, daß in einer Ursprungsmessung die sich bei verschiedenen Fördermengen einstellenden Drücke am Laufrad (5) gemessen und einer Auswerteeinrichtung (9) zur Verfügung gestellt werden.
- Verfahren nach einem der Ansprüche 1 bis 3 zur Durchführung bei einer Anlage mit veränderlichem saugseitigen Anlagendruck, dadurch gekennzeichnet, daß in einer Ursprungsmessung die sich bei verschiedenen Fördermengen einstellenden Drücke am Laufrad (5) gemessen werden und einer Auswerteeinrichtung (9) zur Verfügung gestellt werden, während der saugseitige Anlagendruck aus den Anlagedaten entnommen oder mittels eines Sensors (10) gemessen wird.
- Vorrichtung zur Durchführung eines Verfahrens gemäß einem der Ansprüche 1 bis 4, gekennzeichnet durch einen im druckseitigen Radseitenraum (6) der Kreiselpumpe angeordneten Drucksensor (7), welcher mit einer Auswerteeinrichtung (9) zur Bestimmung der Fördermenge verbunden ist.
- Vorrichtung zur Durchführung eines Verfahrens gemäß einem der Ansprüche 1 bis 3 und 5, gekennzeichnet durch jeweils einen auf der Saugseite und im druckseitigen Radseitenraum (6) der Kreiselpumpe angeordneten Drucksensor (10, 7), welche mit einer Auswerteeinrichtung (9) zur Bestimmung der Fördermenge verbunden sind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CY20101100697T CY1110707T1 (el) | 2000-08-16 | 2010-07-26 | Μεθοδος και διαταξη προσδιορισμου της παροχης φυγοκεντρης αντλιας |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10039917A DE10039917A1 (de) | 2000-08-16 | 2000-08-16 | Verfahren und Vorrichtung zur Ermittlung der Fördermenge einer Kreiselpumpe |
| DE10039917 | 2000-08-16 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1180600A2 true EP1180600A2 (de) | 2002-02-20 |
| EP1180600A3 EP1180600A3 (de) | 2006-12-13 |
| EP1180600B1 EP1180600B1 (de) | 2010-04-28 |
Family
ID=7652547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01117988A Expired - Lifetime EP1180600B1 (de) | 2000-08-16 | 2001-07-25 | Verfahren und Vorrichtung zur Ermittlung der Fördermenge einer Kreiselpumpe |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1180600B1 (de) |
| AT (1) | ATE466194T1 (de) |
| CY (1) | CY1110707T1 (de) |
| DE (2) | DE10039917A1 (de) |
| DK (1) | DK1180600T3 (de) |
| ES (1) | ES2342819T3 (de) |
| PT (1) | PT1180600E (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104114873A (zh) * | 2012-02-08 | 2014-10-22 | 格兰富控股联合股份公司 | 泵壳体 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10359726A1 (de) * | 2003-12-19 | 2005-07-14 | Ksb Aktiengesellschaft | Mengenmessung |
| DE102009022107A1 (de) * | 2009-05-20 | 2010-11-25 | Ksb Ag | Verfahren und Vorrichtung zur Betriebspunktbestimmung einer Arbeitsmaschine |
| DE102014006556B3 (de) * | 2014-05-06 | 2015-02-19 | Thomas Magnete Gmbh | Pumpenaggregat mit Elektromotor |
| DE102015215466A1 (de) * | 2015-08-13 | 2017-02-16 | Ksb Aktiengesellschaft | Einstellung des Förderstroms eines Verbrauchers |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4821580A (en) | 1988-01-27 | 1989-04-18 | Jorritsma Johannes N | Method and apparatus for calculating flow rates through a pumping station |
| US5129264A (en) | 1990-12-07 | 1992-07-14 | Goulds Pumps, Incorporated | Centrifugal pump with flow measurement |
| EP0641997B1 (de) | 1993-09-06 | 1998-01-14 | KSB Aktiengesellschaft | Kreiselpumpengehäuse mit Fördermengenmesseinrichtung |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1009927B (de) * | 1954-02-06 | 1957-06-06 | Demag Ag | Verfahren zur Bestimmung und Erlangung des Betriebspunktes besten Wirkungsgrades bei einer Stroemungs-Arbeitsmaschine mit Abstroemung des Foerdermittels durch eine Spirale |
| DE19544173C1 (de) * | 1995-11-14 | 1997-06-05 | Grundfos As | Gehäuse für eine Kreiselpumpe |
| DE19851523C1 (de) * | 1998-11-09 | 2000-05-18 | Gauting Gmbh Apparatebau | Gebläse |
-
2000
- 2000-08-16 DE DE10039917A patent/DE10039917A1/de not_active Withdrawn
-
2001
- 2001-07-25 PT PT01117988T patent/PT1180600E/pt unknown
- 2001-07-25 ES ES01117988T patent/ES2342819T3/es not_active Expired - Lifetime
- 2001-07-25 EP EP01117988A patent/EP1180600B1/de not_active Expired - Lifetime
- 2001-07-25 AT AT01117988T patent/ATE466194T1/de active
- 2001-07-25 DE DE50115457T patent/DE50115457D1/de not_active Expired - Lifetime
- 2001-07-25 DK DK01117988.4T patent/DK1180600T3/da active
-
2010
- 2010-07-26 CY CY20101100697T patent/CY1110707T1/el unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4821580A (en) | 1988-01-27 | 1989-04-18 | Jorritsma Johannes N | Method and apparatus for calculating flow rates through a pumping station |
| US5129264A (en) | 1990-12-07 | 1992-07-14 | Goulds Pumps, Incorporated | Centrifugal pump with flow measurement |
| EP0641997B1 (de) | 1993-09-06 | 1998-01-14 | KSB Aktiengesellschaft | Kreiselpumpengehäuse mit Fördermengenmesseinrichtung |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104114873A (zh) * | 2012-02-08 | 2014-10-22 | 格兰富控股联合股份公司 | 泵壳体 |
| CN104114873B (zh) * | 2012-02-08 | 2016-08-17 | 格兰富控股联合股份公司 | 泵壳体 |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2342819T3 (es) | 2010-07-15 |
| DE50115457D1 (de) | 2010-06-10 |
| EP1180600A3 (de) | 2006-12-13 |
| CY1110707T1 (el) | 2015-06-10 |
| DK1180600T3 (da) | 2010-08-16 |
| PT1180600E (pt) | 2010-07-01 |
| ATE466194T1 (de) | 2010-05-15 |
| DE10039917A1 (de) | 2002-02-28 |
| EP1180600B1 (de) | 2010-04-28 |
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