EP1180600A2 - Measurement and control procedure for the instantaneous flow of a centrifugal pump - Google Patents
Measurement and control procedure for the instantaneous flow of a centrifugal pump 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
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
Die Erfindung bezieht sich auf ein 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.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.
Diese Art der Fördermengenermittlung ist grundsätzlich aus der US 4 821 580 bekannt. Bei der dort gelehrten Einrichtung werden Messungen des Druckes in dem Bereich vor der Saugleitung einer Kreiselpumpe und in deren Druckleitung vorgenommen. In einem Rechner werden die erfaßten Drücke gespeichert und gegebenenfalls zusammen mit anderen Eingaben für die Feststellung bestimmter Daten, beispielsweise der Fördermenge, ausgewertet. Die hier angewandte Art der Messung ist vergleichbar mit einer Ermittlung der Pumpenkennlinie auf einem Prüfstand. Nachteilig der Umstand, daß der Einfluß des Pumpengehäuses in die Messung mit einfließt und sich dadurch eine instabile oder flache Kennlinie ergibt. Diese führt wegen fehlender Eindeutigkeit zu Ungenauigkeiten in der Fördermengenbestimmung.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. A disadvantage of the fact that the influence of the pump housing in the Measurement flows in and this results in an unstable or flat characteristic. Due to the lack of uniqueness, this leads to inaccuracies in the Flow Determination.
Eine andere Art der Fördermengenermittlung ist aus der US 5 129 264 bekannt. Dort wird eine Differenzdruckmessung zwischen dem Eingang und dem Ausgang des Druckstutzens der Kreiselpumpe vorgenommen. Genutzt wird hier der Umstand, daß sich der Druck des fließenden Mediums mit dem Querschnitt des Strömungsweges verändert, wobei die gemessenen Drücke einen Rückschluß auf die jeweilige Fördermenge zulassen. Somit wird der ermittelte Wert zusammen mit einer Strömungskonstanten in einer Auswertelogik zur Bestimmung der aktuellen Durchflußmenge herangezogen. Die in der US 5 129 264 konkret gelehrte Ausführung bedarf aber auch noch eines gewissen Aufwandes, da der Druckstutzen zur Anbringung einer Vielzahl von Meßstellen durchbohrt werden muß. Weil aber die Strecke zwischen den Meßpunkten relativ kurz ist und die Querschnittsänderungen klein sind, ergeben sich große Ungenauigkeiten bei der Bestimmung der Fördermenge.Another type of delivery quantity determination is known from US Pat. No. 5,129,264. There is a differential pressure measurement between the inlet and the outlet the pressure connection of the centrifugal pump. The is used here The fact that the pressure of the flowing medium with the cross section of the Flow path changed, the measured pressures a conclusion allow the respective flow rate. The determined value is thus together with a flow constant in an evaluation logic to determine the current Flow rate used. The specifically taught in US 5,129,264 Execution also requires a certain amount of effort, since the Pressure ports for attaching a variety of measuring points are pierced got to. But because the distance between the measuring points is relatively short and the Cross-sectional changes are small, there are large inaccuracies in the Determination of the delivery rate.
Aus der EP 0 641 997 B1 ist eine vergleichbare Einrichtung bekannt, bei der
allerdings der notwendige Aufwand dadurch verringert wurde, daß lediglich zwei
Druckmeßstellen notwendig sind, die bei Verwendung eines Spiralgehäuses
vorteilhafterweise an dessen Sporn anzuordnen sind. Allerdings hat auch diese
Ausführung den Nachteil, daß der Einfluß des Pumpengehäuses in die Messung
einfließt, so daß bei einem instabilen oder flachen Verlauf der Pumpenkennlinie
die jeweilige Fördermenge nicht eindeutig oder nur ungenau zu ermitteln ist.A comparable device is known from
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art und eine dieses Verfahren nutzende Vorrichtung zu schaffen, die bei Erfüllung der grundsätzlichen Voraussetzung eines geringen Aufwandes eine auch bei instabilen oder flachen Pumpenkennlinien genaue Ermittlung der Fördermenge erbringen.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.
Die gestellte Aufgabe wird dadurch gelöst, daß zur Bestimmung der Fördermenge der von Einflüssen des Pumpengehäuses und etwaiger Leiteinrichtungen nicht beeinträchtigte Druckaufbau des Laufrades herangezogen wird.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.
Die erfindungsgemäße Lösung nutzt den Umstand, daß das Laufrad im Vergleich zu einem Pumpengehäuse oder einer Leiteinrichtung nur geringe Verluste verursacht. Es kommt also nicht zu einer die Messung beeinträchtigenden Ausbildung einer instabil verlaufenden Kennlinie.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.
Es empfiehlt sich, den Druckaufbau des Laufrades an einem auf der Pumpendruckseite in der Nähe des Laufradaustrittes und vor dem Eintritt in strömungsleitende Elemente gelegenen Meßpunkt zu erfassen. Zweckmäßigerweise wird ein solcher Meßpunkt im druckseitigen Radseitenraum der Kreiselpumpe angeordnet. It is advisable to build up the pressure of the impeller on one of the Pump pressure side near the impeller outlet and before entering flow-measuring elements to be located measuring point. Such a measuring point is expediently located in the pressure-side wheel side space the centrifugal pump arranged.
Bei konstantem saugseitigen Anlagendruck, wie er z.B. in einem geschlossenen Kreislauf gegeben ist, genügt es, wenn in einer Ursprungsmessung die sich bei verschiedenen Fördermengen einstellenden Drücke am Laufrad gemessen und einer Auswerteeinrichtung zur Verfügung gestellt werden. Der Einfluß der Strömungsgeschwindigkeit kann hierbei vernachlässigt werden.With constant suction-side system pressure, e.g. in a closed Circulation is given, it is sufficient if in an original measurement the different pressures on the impeller and be made available to an evaluation device. The influence of Flow velocity can be neglected here.
In einer offenen Anlage, also beispielsweise in einem System zur Entleerung eines Tanks, verändert sich der saugseitige Anlagendruck mit der Entnahme. Daher muß bei einer Bestimmung der Fördermenge dieser Druck jeweils berücksichtigt werden. Dies kann mit Hilfe bekannter Anlagendaten oder mittels eines auf der Pumpensaugseite angeordneten Drucksensors geschehen.In an open system, for example in a system for emptying a Tanks, 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.
Eine zur Durchführung des erfindungsgemäßen Verfahrens in einem geschlossenen Kreislauf geeignete Vorrichtung kann mit Hilfe eines im druckseitigen Radseitenraum der Kreiselpumpe angeordneten Drucksensors, welcher mit einer Auswerteeinrichtung zur Bestimmung der Fördermenge verbunden ist, verwirklicht werden.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.
Bei einer offenen Anlage sollten jeweils ein auf der Pumpensaugseite und im druckseitigen Radseitenraum angeordneter Drucksensor mit der Auswerteeinrichtung verbunden sein.In an open system, one on the pump suction side and one in the pressure-side wheel side space arranged pressure sensor with the Evaluation device to be connected.
Das erfindungsgemäße Verfahren arbeitet zuverlässig und mit guter Genauigkeit, da der im druckseitigen Radseitenraum gemessene statische Druck annähernd eine stetig fallende Gerade über den gesamten Fördermengenverlauf ergibt. Es ist somit ein eindeutiger Zusammenhang zwischen dem gemessenen Druck und der Fördermenge gegeben.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.
Das erfindungsgemäße Verfahren bedarf nur eines vergleichsweise geringen Aufwandes für die Bestimmung der Fördermenge. Dennoch zeichnet es sich gegenüber den bekannten Verfahren durch eine höhere Genauigkeit aus. Dies gilt sowohl gegenüber der aufwendigen Differenzdruckmessung in sich ändernden Querschnitten als auch gegenüber den anderen geschilderten Verfahren, da sich durch eine Eliminierung von Hauptverluststrecken kein instabiler Verlauf der Kennlinie ergibt.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.
Die Erfindung wird anhand eines Ausführungsbeispiels näher erläutert. Die Zeichnung zeigt in
- 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.
- Fig.1
- a meridian section through a centrifugal pump and through parts of a system in which the inventive method is used;
- Fig. 2
- the characteristics of two centrifugal pumps and the associated pressure profiles of the respective impellers.
Das Gehäuse 1 der in der Fig. 1 dargestellten Kreiselpumpe besitzt einen Einlaß 2
und einen Auslaß 3. Ein auf einer Welle 4 befestigtes Laufrad 5 ist in dem
Gehäuse 1 angeordnet.The housing 1 of the centrifugal pump shown in FIG. 1 has an
Im druckseitigen Radseitenraum 6 des Gehäuses 1 ist ein Drucksensor 7
vorgesehen, der über eine Leitung 8 mit einem Auswertegerät 9 verbunden ist. Ein
weiterer - gestrichelt dargestellter - Drucksensor 10 ist vor dem Einlaß 2 des
Gehäuses 1 angeordnet. Über eine - ebenfalls gestrichelt dargestellte - Leitung
11 ist der Drucksensor 10 mit dem Auswertegerät 9 verbunden. Der Drucksensor
10 ist in einer Rohrleitung 12 angeordnet, welche zu einem - hier nicht
dargestellten - Tank führt. Es handelt sich hier also um ein offenes System.A
Während des Laufs der Kreiselpumpe wird die in dem Tank befindliche Flüssigkeit
über den Auslaß 3 zu einer - nicht dargestellten - Mündung gefördert. Da der
abnehmende Flüssigkeitsspiegel im Tank zu einer entsprechenden fortgesetzten
Druckabsenkung vor dem Einlaß 2 der Kreiselpumpe führt, muß die durch das
Laufrad 5 verursachte Druckerhöhung durch eine Differenzdruckbildung der Werte
der Sensoren 7 und 10 ermittelt werden. Eine den verschiedenen Fördermengen
zuzuordnende Druckerhöhung des Laufrades 5 wird in einer Ursprungsmessung
ermittelt und in dem Auswertegerät 9 gespeichert. Die gespeicherten
Informationen werden bei der Bestimmung der Fördermenge herangezogen. During the run of the centrifugal pump, the liquid in the tank
promoted via the
In einem geschlossenen Kreislauf kann auf die laufende Feststellung des vor dem Einlauf der Kreiselpumpe herrschenden Druckes verzichtet werden, da dieser sich während des Betriebes nur unwesentlich verändert. Hier genügt es, den Druck einmal zu bestimmen, um ihn dann dem Auswertegerät dauerhaft zur Verfügung zu stellen.In a closed cycle, the current finding of the before the Inlet of the centrifugal pump prevailing pressure, since this is only slightly changed during operation. The pressure is enough here to be determined once in order to then be permanently available to the evaluation device to deliver.
Aus der Fig. 2 ist der Zusammenhang zwischen der Fördermenge und dem
Druckaufbau der Pumpe und des Laufrades zu ersehen. Den Kennlinien der Fig. 2
liegen Kreiselpumpen mit einem Laufrad zweier unterschiedlicher
Abdrehdurchmesser zugrunde. So beziehen sich die Kennlinien 13 und 14 auf das
erste Laufrad und die Kennlinien 15 und 16 auf das zweite Laufrad.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
Die Kennlinien 13 und 15 sind Pumpenkennlinien, welche durch eine Differenzdruckmessung
zwischen Saug- und Druckstutzen der Kreiselpumpen ermittelt
wurden. Die Kennlinien 13 und 15 weisen einen instabilen Verlauf auf und sind
daher für die Ermittlung der Fördermenge ungeeignet.The
Die Kennlinien 14 und 16 sind Laufradkennlinien, welche durch einen
Druckaufnehmer 7 ermittelt wurden. Ihr Verlauf ist eindeutig stabil. Daher sind
diese Kennlinien für eine genaue Ermittlung der Fördermenge geeignet.The
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CY20101100697T CY1110707T1 (en) | 2000-08-16 | 2010-07-26 | METHOD AND DEVICE FOR DETERMINING THE CENTRAL PUMP PROVIDER |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10039917A DE10039917A1 (en) | 2000-08-16 | 2000-08-16 | Method and device for determining the delivery rate of a centrifugal pump |
DE10039917 | 2000-08-16 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1180600A2 true EP1180600A2 (en) | 2002-02-20 |
EP1180600A3 EP1180600A3 (en) | 2006-12-13 |
EP1180600B1 EP1180600B1 (en) | 2010-04-28 |
Family
ID=7652547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01117988A Expired - Lifetime EP1180600B1 (en) | 2000-08-16 | 2001-07-25 | Measurement and control procedure for the instantaneous flow of a centrifugal pump |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1180600B1 (en) |
AT (1) | ATE466194T1 (en) |
CY (1) | CY1110707T1 (en) |
DE (2) | DE10039917A1 (en) |
DK (1) | DK1180600T3 (en) |
ES (1) | ES2342819T3 (en) |
PT (1) | PT1180600E (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104114873A (en) * | 2012-02-08 | 2014-10-22 | 格兰富控股联合股份公司 | Pump housing |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10359726A1 (en) * | 2003-12-19 | 2005-07-14 | Ksb Aktiengesellschaft | quantity measurement |
DE102009022107A1 (en) * | 2009-05-20 | 2010-11-25 | Ksb Ag | Method and device for determining the operating point of a work machine |
DE102014006556B3 (en) * | 2014-05-06 | 2015-02-19 | Thomas Magnete Gmbh | Pump unit with electric motor |
DE102015215466A1 (en) * | 2015-08-13 | 2017-02-16 | Ksb Aktiengesellschaft | Adjustment of the flow rate of a consumer |
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 (en) | 1993-09-06 | 1998-01-14 | KSB Aktiengesellschaft | Centrifugal pump casing with throughput gauge |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1009927B (en) * | 1954-02-06 | 1957-06-06 | Demag Ag | Method for determining and obtaining the operating point of the best efficiency in a flow machine with flow of the conveying means through a spiral |
DE19544173C1 (en) * | 1995-11-14 | 1997-06-05 | Grundfos As | Housing for a centrifugal pump |
DE19851523C1 (en) * | 1998-11-09 | 2000-05-18 | Gauting Gmbh Apparatebau | Fan for compressible delivery medium has arrangement for deriving volume flow from pressure, temperature and rotor speed measurement values |
-
2000
- 2000-08-16 DE DE10039917A patent/DE10039917A1/en not_active Withdrawn
-
2001
- 2001-07-25 PT PT01117988T patent/PT1180600E/en unknown
- 2001-07-25 DE DE50115457T patent/DE50115457D1/en not_active Expired - Lifetime
- 2001-07-25 EP EP01117988A patent/EP1180600B1/en not_active Expired - Lifetime
- 2001-07-25 DK DK01117988.4T patent/DK1180600T3/en active
- 2001-07-25 ES ES01117988T patent/ES2342819T3/en not_active Expired - Lifetime
- 2001-07-25 AT AT01117988T patent/ATE466194T1/en active
-
2010
- 2010-07-26 CY CY20101100697T patent/CY1110707T1/en 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 (en) | 1993-09-06 | 1998-01-14 | KSB Aktiengesellschaft | Centrifugal pump casing with throughput gauge |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104114873A (en) * | 2012-02-08 | 2014-10-22 | 格兰富控股联合股份公司 | Pump housing |
CN104114873B (en) * | 2012-02-08 | 2016-08-17 | 格兰富控股联合股份公司 | Pump case |
Also Published As
Publication number | Publication date |
---|---|
DE10039917A1 (en) | 2002-02-28 |
CY1110707T1 (en) | 2015-06-10 |
ATE466194T1 (en) | 2010-05-15 |
DE50115457D1 (en) | 2010-06-10 |
EP1180600A3 (en) | 2006-12-13 |
ES2342819T3 (en) | 2010-07-15 |
EP1180600B1 (en) | 2010-04-28 |
DK1180600T3 (en) | 2010-08-16 |
PT1180600E (en) | 2010-07-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AT516622B1 (en) | System for measuring time-resolved flow processes of fluids | |
DE3882966T2 (en) | IMPROVED FLOW METER WITH PRESSURE MEASUREMENT. | |
EP0300201B1 (en) | Device for hemodialysis and hemofiltration | |
EP0122604B1 (en) | Apparatus for regulating ultrafiltration rate | |
DE69209366T2 (en) | Hemodiafiltration treatment device | |
EP1491222B1 (en) | Device for extracorporal blood treatment with equipment for checking a sterile filter and associated method | |
EP1893951B1 (en) | Magnetically inductive flowmeter | |
EP2070458B1 (en) | Method for detecting a flow in a coffee machine and coffee machine to implement the method | |
DE102014119212A1 (en) | Measuring arrangement and method for measuring the density of flowable media | |
EP1180600A2 (en) | Measurement and control procedure for the instantaneous flow of a centrifugal pump | |
WO2005064167A1 (en) | Quantitative measurement | |
EP3012014A1 (en) | Liquid treatment system | |
EP3350567A1 (en) | Method and measurement device for determining the compressibility of a flowing fluid | |
DE2745609C2 (en) | Device for measuring flowing media, in particular for determining the amount of a liquid flowing under pressure in a line system | |
EP0641997A1 (en) | Centrifugal pump casing with throughput gauge | |
DE19529331C2 (en) | Volume counter | |
DE102017115429A1 (en) | Methods and apparatus for calibrating a pump for blood treatment | |
EP3382352B1 (en) | Oval wheel flow meter, method of flow measurement and metering system | |
EP3350444B1 (en) | Bidirectionally flow-impinged device for measuring flow processes of fluids | |
AT522714B1 (en) | System for measuring time-resolved flow processes of media and a method for determining a thermal expansion coefficient with such a system | |
DE2504402C2 (en) | Device for measuring the flow rate of a liquid | |
EP3394441A1 (en) | Blood treatment device comprising a dosing line having a diaphragm pump and having a valve and method for dosing | |
DE19719067C2 (en) | Device for continuous concentration determination and concentration control of sample solutions | |
DE1766008C (en) | Measuring and warning device for an artificial kidney | |
DE8906275U1 (en) | Flowmeter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
17P | Request for examination filed |
Effective date: 20070612 |
|
AKX | Designation fees paid |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
17Q | First examination report despatched |
Effective date: 20071119 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REF | Corresponds to: |
Ref document number: 50115457 Country of ref document: DE Date of ref document: 20100610 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: SC4A Free format text: AVAILABILITY OF NATIONAL TRANSLATION Effective date: 20100624 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2342819 Country of ref document: ES Kind code of ref document: T3 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: T3 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
REG | Reference to a national code |
Ref country code: GR Ref legal event code: EP Ref document number: 20100401719 Country of ref document: GR |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20110131 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 15 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 16 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 20170706 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CY Payment date: 20170706 Year of fee payment: 17 Ref country code: GR Payment date: 20170728 Year of fee payment: 17 Ref country code: FI Payment date: 20170725 Year of fee payment: 17 Ref country code: CH Payment date: 20170724 Year of fee payment: 17 Ref country code: MC Payment date: 20170728 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IE Payment date: 20170721 Year of fee payment: 17 Ref country code: AT Payment date: 20170727 Year of fee payment: 17 Ref country code: PT Payment date: 20170712 Year of fee payment: 17 Ref country code: BE Payment date: 20170720 Year of fee payment: 17 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 50115457 Country of ref document: DE Owner name: KSB SE CO. KGAA, DE Free format text: FORMER OWNER: KSB AG, 67227 FRANKENTHAL, DE Ref country code: DE Ref legal event code: R081 Ref document number: 50115457 Country of ref document: DE Owner name: KSB SE & CO. KGAA, DE Free format text: FORMER OWNER: KSB AG, 67227 FRANKENTHAL, DE |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 18 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 466194 Country of ref document: AT Kind code of ref document: T Effective date: 20180725 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180725 Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180731 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20180731 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180731 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180725 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180731 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180725 Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180725 Ref country code: CY Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180725 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190125 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180731 Ref country code: GR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190207 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20190725 Year of fee payment: 19 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20190723 Year of fee payment: 19 Ref country code: ES Payment date: 20190808 Year of fee payment: 19 Ref country code: TR Payment date: 20190723 Year of fee payment: 19 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20200723 Year of fee payment: 20 Ref country code: DK Payment date: 20200717 Year of fee payment: 20 Ref country code: FR Payment date: 20200717 Year of fee payment: 20 Ref country code: GB Payment date: 20200722 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20200731 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MM Effective date: 20200801 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200801 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200726 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 50115457 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: EUP Expiry date: 20210725 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 Expiry date: 20210724 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20210724 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20211203 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200726 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200725 |