EP1477678A2 - Störungsfrüherkennung an Pumpenventilen - Google Patents
Störungsfrüherkennung an Pumpenventilen Download PDFInfo
- Publication number
- EP1477678A2 EP1477678A2 EP04011109A EP04011109A EP1477678A2 EP 1477678 A2 EP1477678 A2 EP 1477678A2 EP 04011109 A EP04011109 A EP 04011109A EP 04011109 A EP04011109 A EP 04011109A EP 1477678 A2 EP1477678 A2 EP 1477678A2
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- EP
- European Patent Office
- Prior art keywords
- pump
- valve
- generated
- valves
- signal level
- 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
- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 230000001960 triggered effect Effects 0.000 claims abstract description 3
- 230000005236 sound signal Effects 0.000 claims description 9
- 238000012935 Averaging Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000001133 acceleration Effects 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 230000002950 deficient Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000013589 supplement Substances 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
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
Definitions
- the invention relates to a method for monitoring and automatic early fault detection the valves, in particular the suction and / or pressure valves, an oscillating positive displacement pump, in particular a diaphragm metering pump, according to the preamble of claim 1.
- the invention also relates to a device for carrying out this method Device according to the preamble of claim 14.
- suction and pressure valves are subject to constant wear and tear has a negative effect on the delivery rate of the pump and on its dosing accuracy.
- valves fail prematurely. This causes unwanted due to the then necessary immediate business interruption Consequential damages.
- the invention is therefore based on the object to eliminate the described Disadvantages of providing a method and a device by means of which it is possible to monitor the valves of a pump of the generic type in such a way that results in an automatic fault early detection of the valves, so that valve damage can be detected in time and an interruption of the Pump can be planned.
- the invention also provides one created for carrying out this method Device before whose features are listed in claim 14.
- the method according to the invention is based on the essential idea that from a leaking valve due to the backflow of the conveying fluid in the closed Valve condition generated increased operating noise as a measure of the Leakage of the valve to use.
- the generated effective signal level continuously monitored and with one of the operating noise the reference valve level formed with the valve intact valve, wherein at a predetermined level deviation due to an increase in level Operating noise a fault early detection indicator is triggered.
- the invention thus makes advantageous advantage of the effect that at intact pump a certain background noise can be seen. Join this at the same time some discrete typical single sounds. These have different Causes, such as the meshing in the reduction gear on the pump engine or the opening and closing noises of the valves.
- valves have become leaky due to the backflow of the delivery fluid in the closed valve state increased typical operating noise. This increased operating noise depends on the return flow the delivery fluid and are inventively as a measure of the leakage of the Valve used.
- the in the oscillating displacement pumps, especially in the speech standing diaphragm dosing pumps, used for applying suction and Pressure valves are usually either ball valves or plate valves or Cone valves that can be spring loaded or pressure controlled.
- These demands placed on these valves in that they are just at the right time open and close and that they are tight in the foreseeable time have to be.
- the damage that may occur to such valves is expressed either in a notch leakage generated by one or more notches on the valve seat, where a local damage occurs, or from a one-dimensional damage generating surface leakage.
- the sealing edge of the valve seat is not punctually by one or more notches, but over the entire circumference damaged. In both cases, increased flow noise occurs at the valve seat on what u.a. by the coincidence of the occurring cavitation bubbles explain.
- the operating noise generated by the pump and thus also that of the valves measured as structure-borne noise may be in the embodiment of Invention by means of a structure-borne sound sensor or a microphone, in particular but by means of a vibration acceleration sensor, preferably works on the piezoelectric compression principle and an integrated May have charge amplifier.
- the generated structure-borne noise at the pump head in particular at a central location thereof.
- the generated structure-borne sound at or near the valve in question measure up.
- This may be the suction and / or pressure valve, but in addition also the provided on the pump body further hydraulic valves, the leak supplement or the removal of excess hydraulic fluid serve.
- the invention provides various possibilities. So it is in Embodiment of the invention possible with the operating noise of the pump intact valves formed reference signal level over a predetermined period to mediate. Also, the increased operating noise of the pump with leaky valves formed RMS signal level over a predetermined Period to be averaged.
- a trigger signal for use which leads to a defined Time of the pump stroke cycle is generated. This can e.g. in the suction stroke end position of the piston.
- the trigger signal must advantageously no meet very high accuracy requirements. For example, an accuracy from +/- 5 ° crank angle. This is for monitoring the suction valve in a defined period of time, the generated structure-borne sound signal during the displacement phase (Pressure stroke) detected and compared. In contrast, for the Monitoring the pressure valve the corresponding period in the intake phase (Suction stroke).
- the defined period can only be used for monitoring purposes, for example of the pressure valve extend over a range of 90 - 160 ° of the crank angle, while for the monitoring of the suction valve such a defined Period sufficient, extending over a range of 270 - 340 ° of the crank angle extends.
- the generation of the trigger signal can according to the invention in various ways carried out, for example by means of a contactor mounted on the pump engine, by means of a corresponding scanning of the piston rod, by means of the detection a characteristic signal in the generated structure-borne sound signal, for example due to the game envelope in the engine, and also on the basis of other characteristic signals, e.g. the measured pressure in the airspace of the hydraulic storage room or in the engine.
- the reference signal level is expediently taken to be the reference value. which is associated with an intact valve.
- This reference value can be up be detected in different ways, for example, by measuring integrity Condition of the valve under operating conditions, by selecting from predefined values, e.g. from a matrix with defined values for different ones Valve designs and operating conditions, from a map determination, i.e. a computational determination from valve data and operating data, such as delivery pressure, Fluid, etc., and the like.
- the mean are formed from a number of pump strokes.
- This will be the automatic Early disturbance detection method according to the invention insensitive to short-term disturbances. This can e.g. be useful if contaminated fluids be metered by the pump in question. By fluid particles between Valve seat and valve closing body are inadvertently pinched, it comes at individual pump strokes to a fluid backflow, but because only temporarily and temporarily, not yet displayed as a fault should.
- a further embodiment of the method according to the invention may consist in that of a number of pump strokes before their further signal processing a certain number of pump strokes with extreme values or not plausible values.
- the signal values of 100 pump strokes can be detected, with three pump strokes with the highest as well with the lowest individual values sorted out.
- the average value is formed from the remaining 94 values.
- valve internals these are in particular fittings on the valve seat, the purpose of which is due to the leakage backflow to be excited to vibrate, to amplify the structure-borne sound signal to reach.
- the inventively provided device for carrying out the described Method is provided with a connected to a pump component Measuring device, which by a leaking valve due to the backflow the delivery fluid in the closed valve state generated increased operating noise monitored and measures as RMS signal level, and with a with the Measuring device connected comparison device, which the RMS signal level with an operating noise of the pump with intact valves formed Reference signal level compares and at a predetermined level deviation or change generates a fault message as early fault detection.
- the measuring device has at least one sensor for detection of the structure-borne noise generated by the operating noise of the pump.
- This structure-borne sound sensor can be a vibration acceleration sensor, preferably be piezoelectric.
- the measuring device either on the pump head, in particular at a central point thereof, be connected.
- the measuring device directly on or near the pump valves, i.e. the suction and pressure valve and the other hydraulic valves, provided.
- the structure-borne sound signal generated by suitable fittings are reinforced in the valve seat.
- a Vibration device provided, which is provided at or near the valve seat is.
- Such a vibrating device may consist of at least one obliquely in the Valve built-in wing or consist of a membrane sheet metal ring, the is installed in the valve seat.
- a measuring device 5 is provided, which at a central Place the pump cover 6 is connected and that of a leaking valve 3 or 4 due to the backflow of the conveying fluid in the closed valve state monitored increased operating noise as well as RMS signal level measures.
- the measuring device 5 is for measuring each generated by the operating noise Structure-borne sound and has a corresponding sensor. This is a piezoelectric working in the illustrated embodiment Vibration acceleration sensor.
- a comparison device 7 which of the measuring device 5 supplied via a signal line 8 RMS signal level with a from the operating noise of the pump with intact valves 3 and 4 formed Reference signal level compares and at a predetermined level deviation or change generates a fault message as early fault detection.
- FIGS. 2a-2e the various diagrams show the characteristics of the diaphragm metering pump 1 according to FIG Fig. 2a shows the piston travel over time.
- FIG. 2 b shows the pressure curve in the hydraulic chamber 9 of the pump 1, where clearly the characteristic course of the performed by the piston 10 Pressure stroke and the suction stroke of the membrane 11 (see Fig. 1) can be seen.
- Fig. 2c the course of the designed by a pump 1 with intact valves 3 and 4 generated operating noise, as a structure-borne noise signal is measured, typically, with the course shown in Fig. 2c represents the reference signal level. This reproduces typical noise peaks, during the pressure stroke and suction stroke performed by the pump piston 10 be generated.
- Fig. 2d shows the structure-borne sound profile of a pump 1 with defective Suction valve 3, which is typically performed during the piston 10 from Druckhubes appears in appearance, since in this case the suction valve 3 due to the occurred Leakage does not close exactly and thus an undesirable Leakage flow into the intake pipe permits.
- FIG. 2e shows the structure-borne sound signal in a pump 1 Defective pressure valve 4. This results, as shown, during the suction stroke of Piston 10, since here the leaking pressure valve 4 is no longer reliable closes and an undesirable backflow in the form of a leakage flow in the fluid space 12 of the pump 1 allows.
- FIGS. 3a and 3b show the level profile of the measured structure-borne sound signal in averaged form, wherein in Fig. 3a, the averaging period during several Pump strokes, i. so several times during the print stroke and the Suction stroke, is shown and the early fault detection due to a increased detected RMS signal level.
- Fig. 3b shows the Waveform at an averaging period that is only a fraction the pump stroke cycle, in the case shown, only a specific one Time of the suction stroke, extends.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Examining Or Testing Airtightness (AREA)
- Details Of Reciprocating Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Fluid-Pressure Circuits (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Description
- daß Undichtigkeiten sowohl am Saugventil als auch am Druckventil genau unterschieden werden können,
- daß die Empfindlichkeit der Messung sehr hoch ist und
- daß störende Schallquellen, z.B. solche aus dem Antriebssystem, leicht ausgefiltert werden können, indem beispielsweise das Zeitfenster, innerhalb dessen die Messung erfolgte, entsprechend groß oder klein definiert wird.
- Fig. 1
- schematisch im Schnitt die Anwendung des Verfahrens sowie der Vorrichtung gemäß der Erfindung bei einer Membrandosierpumpe sowie bei einer Kolbenpumpe;
- Fig. 2a
- im Diagramm den Kolbenweg der Pumpe über der Zeit,
- Fig. 2b
- im Diagramm den zeitlichen Verlauf des Druckhubs sowie des Saughubs der Membrandosierpumpe;
- Fig. 2c
- den als Körperschallsignal gemessenen Referenzsignalpegel eines intakten Pumpenventils sowohl beim Druckhub als auch beim Saughub,
- Fig. 2d
- den Effektivsignalpegel bei einem defekten Saugventil und
- Fig. 2e
- bei einem defekten Druckventil;
- Fig. 3a
- den Referenzsignalpegel sowie den Effektivsignalpegel in zeitlicher Mittelung über mehrere Pumpenhübe und
- Fig. 3b
- in zeitlich begrenzter Mittelung, d.h. in einem definierten Zeitfenster innerhalb des Hubzyklus.
Claims (21)
- Verfahren zur Überwachung und zur automatischen Störungsfrüherkennung der Ventile, insbesondere der Saug- und/oder Druckventile, einer oszillierenden Verdrängerpumpe, insbesondere einer Membrandosierpumpe,
dadurch gekennzeichnet, daß das von einem undichten Ventil aufgrund der Rückströmung des Förderfluids im geschlossenen Ventilzustand erzeugte erhöhte Betriebsgeräusch als Maß für die Undichtigkeit des Ventils verwendet wird, indem der erzeugte Effektivsignalpegel kontinuierlich überwacht und mit einem vom Betriebsgeräusch der Pumpe mit intakten Ventilen gebildeten Referenzsignalpegel verglichen wird, wobei bei einer vorbestimmten Pegelabweichung bzw. -veränderung aufgrund eines erhöhten Betriebsgeräusches eine Störungsfrüherkennungsanzeige ausgelöst wird. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das erzeugte Betriebsgeräusch der Pumpe und damit auch dasjenige der Ventile als Körperschall gemessen wird.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß der erzeugte Körperschall mittels wenigstens eines Körperschallsensors oder Mikrophons gemessen wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der erzeugte Körperschall mittels wenigstens eines Schwingungsbeschleunigungssensors gemessen wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der erzeugte Körperschall am Pumpenkopf, insbesondere an einer zentralen Stelle hiervon, gemessen wird.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der erzeugte Körperschall an oder nahe dem bzw. den Ventilen gemessen wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der vom Betriebsgeräusch der Pumpe mit intakten Ventilen gebildete Referenzsignalpegel über einen vorbestimmten Zeitraum gemittelt wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß auch der vom erhöhten Betriebsgeräusch der Pumpe mit undicht gewordenem Ventil bzw. Ventilen gebildete Effektivsignalpegel über einen vorbestimmten Zeitraum gemittelt wird.
- Verfahren nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß als vorbestimmter Mittelungszeitraum derjenige während mehrerer Pumpenhübe verwendet wird.
- Verfahren nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß als vorbestimmter Mittelungszeitraum derjenige während eines Bruchteils des Pumpenhubzyklus verwendet wird.
- Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß zur Bildung des Mittelwertes des jeweiligen Signalpegels ein Triggersignal zu einem definierten Zeitpunkt während des Pumpenhubzyklus verwendet wird.
- Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß das Triggersignal mittels eines am Pumpentriebwerk angebauten Kontaktgebers (13) erzeugt wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das vom jeweiligen Ventil erzeugte Körperschallsignal mittels Ventileinbauten verstärkt wird.
- Vorrichtung zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche,
gekennzeichnet durch
eine an ein Pumpenbauteil angeschlossene Meßeinrichtung (5), welche das von einem undichten Ventil (3 bzw. 4) aufgrund der Rückströmung des Förderfluids im geschlossenen Ventilzustand erzeugte erhöhte Betriebsgeräusch überwacht und als Effektivsignalpegel mißt, und
eine mit der Meßeinrichtung (5) verbundene Vergleichseinrichtung (7), welche den Effektivsignalpegel mit einem vom Betriebsgeräusch der Pumpe mit intaktem Ventil (3 bzw. 4) gebildeten Referenzsignalpegel vergleicht und bei einer vorbestimmten Pegelabweichung bzw. -veränderung eine Störmeldung als Störungsfrüherkennung erzeugt. - Vorrichtung nach Anspruch 14, dadurch gekennzeichnet, daß die Meßeinrichtung (5) wenigstens einen Sensor zur Erfassung des vom Betriebsgeräusch der Pumpe (1 bzw. 2) erzeugten Körperschalls aufweist.
- Vorrichtung nach Anspruch 15, dadurch gekennzeichnet, daß der Körperschallsensor ein Schwingungsbeschleunigungssensor (5) ist.
- Vorrichtung nach einem der Ansprüche 14 - 16, dadurch gekennzeichnet, daß die Meßeinrichtung (5) am Pumpenkopf (6), insbesondere an einer zentralen Stelle hiervon, angeschlossen ist.
- Vorrichtung nach einem der Ansprüche 14 - 16, dadurch gekennzeichnet, daß die Meßeinrichtung (5) an oder nahe den Pumpenventilen (3, 4) vorgesehen ist.
- Vorrichtung nach einem der Ansprüche 14 - 18, dadurch gekennzeichnet, daß das zu überwachende Pumpenventil (3, 4) zur Verstärkung des erzeugten Körperschallsignals eine Schwingungseinrichtung aufweist, die an oder nahe dem Ventilsitz vorgesehen ist.
- Vorrichtung nach Anspruch 19, dadurch gekennzeichnet, daß die Schwingungseinrichtung aus wenigstens einem schräg in das Ventil (3 bzw. 4) eingebauten Flügel besteht.
- Vorrichtung nach Anspruch 19, dadurch gekennzeichnet, daß die Schwingungseinrichtung ein Membranblechring ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10322220A DE10322220C5 (de) | 2003-05-16 | 2003-05-16 | Störungsfrüherkennung an Pumpenventilen |
DE10322220 | 2003-05-16 |
Publications (4)
Publication Number | Publication Date |
---|---|
EP1477678A2 true EP1477678A2 (de) | 2004-11-17 |
EP1477678A3 EP1477678A3 (de) | 2005-06-29 |
EP1477678B1 EP1477678B1 (de) | 2007-02-21 |
EP1477678B2 EP1477678B2 (de) | 2017-04-19 |
Family
ID=32946466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04011109.8A Expired - Lifetime EP1477678B2 (de) | 2003-05-16 | 2004-05-10 | Störungsfrüherkennung an Pumpenventilen |
Country Status (4)
Country | Link |
---|---|
US (1) | US7069183B2 (de) |
EP (1) | EP1477678B2 (de) |
AT (1) | ATE354730T1 (de) |
DE (2) | DE10322220C5 (de) |
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DE102010034798A1 (de) | 2009-09-02 | 2011-03-03 | Schaeffler Technologies Gmbh & Co. Kg | Ventilüberwachung an Pumpen mit mindestens zwei Zylindern |
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Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4965513A (en) * | 1986-09-30 | 1990-10-23 | Martin Marietta Energy Systems, Inc. | Motor current signature analysis method for diagnosing motor operated devices |
US4896101A (en) * | 1986-12-03 | 1990-01-23 | Cobb Harold R W | Method for monitoring, recording, and evaluating valve operating trends |
US5000664A (en) * | 1989-06-07 | 1991-03-19 | Abbott Laboratories | Apparatus and method to test for valve leakage in a pump assembly |
US5439355A (en) * | 1993-11-03 | 1995-08-08 | Abbott Laboratories | Method and apparatus to test for valve leakage in a pump assembly |
GB2314412B (en) * | 1996-06-19 | 2000-07-26 | Richard Czaja | Method of monitoring pump performance |
JPH11117875A (ja) * | 1997-10-14 | 1999-04-27 | Tokyo Gas Co Ltd | 音響によるコンプレッサの監視装置 |
DE19924377B4 (de) * | 1999-05-27 | 2004-12-02 | Siemens Ag | Diagnosesystem für ein von einem Stellungsregler über einen Antrieb betätigbares Ventil |
DE19947570B4 (de) * | 1999-10-02 | 2016-07-14 | MARIDIS Maritime Diagnose & Service GmbH | Verfahren zum Erkennen von Undichtigkeiten an Kolbenmaschinen während des laufenden Betriebes |
JP2002041143A (ja) * | 2000-07-31 | 2002-02-08 | Chiyoda Corp | 動作部の異常診断方法及び圧縮機のバルブ異常診断方法 |
US6731216B2 (en) * | 2002-05-20 | 2004-05-04 | B. Braun Medical, Inc. | Proper tubing installation testing method and apparatus for a peristaltic pump |
-
2003
- 2003-05-16 DE DE10322220A patent/DE10322220C5/de not_active Expired - Lifetime
-
2004
- 2004-05-10 AT AT04011109T patent/ATE354730T1/de not_active IP Right Cessation
- 2004-05-10 DE DE502004002932T patent/DE502004002932D1/de not_active Expired - Lifetime
- 2004-05-10 EP EP04011109.8A patent/EP1477678B2/de not_active Expired - Lifetime
- 2004-05-14 US US10/845,170 patent/US7069183B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
None |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007099057A2 (de) * | 2006-02-28 | 2007-09-07 | Auma Riester Gmbh+Co. Kg | Verfahren und vorrichtung zur überwachung, diagnose oder justage eines stellglieds zur betätigung einer armatur |
WO2007099057A3 (de) * | 2006-02-28 | 2007-11-15 | Auma Riester Gmbh & Co Kg | Verfahren und vorrichtung zur überwachung, diagnose oder justage eines stellglieds zur betätigung einer armatur |
DE102006055747A1 (de) * | 2006-11-25 | 2008-05-29 | Abb Ag | Verfahren und Anordnung zur Diagnose eines Stellorgans |
US8122905B2 (en) | 2006-11-25 | 2012-02-28 | Abb Ag | Method and arrangement for diagnosis of a final control element |
DE102006055747B4 (de) | 2006-11-25 | 2021-08-26 | Abb Ag | Verfahren und Anordnung zur Diagnose eines Stellorgans |
DE102010034798A1 (de) | 2009-09-02 | 2011-03-03 | Schaeffler Technologies Gmbh & Co. Kg | Ventilüberwachung an Pumpen mit mindestens zwei Zylindern |
DE102010034800A1 (de) | 2009-09-02 | 2011-03-24 | Schaeffler Technologies Gmbh & Co. Kg | Ventilüberwachung an Pumpen mit mindestens zwei Zylindern |
CN104895714A (zh) * | 2015-03-12 | 2015-09-09 | 肖光生 | 汽油缸内直喷 |
CN105822537A (zh) * | 2016-04-12 | 2016-08-03 | 齐轩 | 一种隔膜泵橡胶隔膜的疲劳试验装置 |
CN108661891A (zh) * | 2018-05-09 | 2018-10-16 | 浙江工业大学 | 一种低成本隔膜计量泵隔膜破损泄漏检测方法 |
CN108661891B (zh) * | 2018-05-09 | 2019-07-30 | 浙江工业大学 | 一种低成本隔膜计量泵隔膜破损泄漏检测方法 |
Also Published As
Publication number | Publication date |
---|---|
DE502004002932D1 (de) | 2007-04-05 |
US7069183B2 (en) | 2006-06-27 |
ATE354730T1 (de) | 2007-03-15 |
US20040226346A1 (en) | 2004-11-18 |
EP1477678B2 (de) | 2017-04-19 |
EP1477678A3 (de) | 2005-06-29 |
EP1477678B1 (de) | 2007-02-21 |
DE10322220C5 (de) | 2010-10-14 |
DE10322220B3 (de) | 2004-10-07 |
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