EP1564411A1 - Procédé de detection des erreurs de fonctionnement d'une unité de pompage - Google Patents

Procédé de detection des erreurs de fonctionnement d'une unité de pompage Download PDF

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Publication number
EP1564411A1
EP1564411A1 EP04002979A EP04002979A EP1564411A1 EP 1564411 A1 EP1564411 A1 EP 1564411A1 EP 04002979 A EP04002979 A EP 04002979A EP 04002979 A EP04002979 A EP 04002979A EP 1564411 A1 EP1564411 A1 EP 1564411A1
Authority
EP
European Patent Office
Prior art keywords
pump
error
motor
hydraulic
determined
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
Application number
EP04002979A
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German (de)
English (en)
Other versions
EP1564411B2 (fr
EP1564411B1 (fr
Inventor
Carsten Kallesoe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grundfos AS
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Grundfos AS
Priority date (The priority date 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 date listed.)
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34684659&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1564411(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Grundfos AS filed Critical Grundfos AS
Priority to EP04002979.5A priority Critical patent/EP1564411B2/fr
Priority to AT04002979T priority patent/ATE389807T1/de
Priority to DE502004006565T priority patent/DE502004006565D1/de
Priority to CN200580008075.3A priority patent/CN1938520B/zh
Priority to US10/597,892 priority patent/US8070457B2/en
Priority to PCT/EP2005/001193 priority patent/WO2005078287A1/fr
Publication of EP1564411A1 publication Critical patent/EP1564411A1/fr
Publication of EP1564411B1 publication Critical patent/EP1564411B1/fr
Application granted granted Critical
Priority to US13/284,049 priority patent/US8353676B2/en
Publication of EP1564411B2 publication Critical patent/EP1564411B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0245—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the pump
    • 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
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
    • F04D15/0236—Lack of liquid level being detected by analysing the parameters of the electric drive, e.g. current or power consumption

Definitions

  • the invention relates to a method for detecting errors during operation a pump unit, in particular a centrifugal pump unit according to the specified in the preamble of claim 1
  • a centrifugal pump unit according to the specified in the preamble of claim 1
  • the invention is based on the object Method for detecting errors during operation of a pump set to create, which is executable with the lowest possible sensor and an apparatus for carrying out the method.
  • the basic idea of the present invention is based on the rule anyway available or at least little expensive ascertainable electrical quantities of the motor and at least one in usually to be determined by sensors variable hydraulic Size of the pump for the electric motor and the hydraulic-mechanical Pump to capture characteristic data and this if necessary, evaluate according to mathematical linkage. In the simplest Form this is done by comparison with predetermined values, where both the comparison and the result automatically by means of electronic Data processing is performed, which thus determines whether an error in Operation of the pump is present or not.
  • the inventive method for detecting errors during operation a pump unit thus provides, at least two of the electrical Performance of the engine determining sizes and at least one to detect variable hydraulic size of the pump, these detected or to derive derived values from given values and to determine if there is an error or not. all of this takes place automatically by electronic data processing.
  • the invention Method requires a minimum of sensors and can in modern, typically frequency converter controlled pumps, which in any case have digital data processing, as a rule be implemented by software. It is particularly advantageous that the variables determining the electric power of the motor, namely typically the voltage applied to the motor and the motor feeding power, anyway within the frequency converter electronics are available, allowing for the detection of a hydraulic Size, e.g. the pressure only a pressure sensor is required in the Incidentally, in modern pumps also often to standard equipment counts. The default values required for comparison can in digital form in corresponding memory chips of the Engine electronics are stored.
  • the two electrical quantities of the motor which determine the electric power of the motor, preferably the voltage applied to the motor and the current which feeds the motor, achieve at least one Comparative value are mathematically linked and on the other hand, the at least one variable hydraulic size of the pump and another determining the performance of the pump mechanical or hydraulic variable to obtain at least one further comparison value are mathematically linked, then determined based on the result of the mathematical operation by comparison with predetermined values whether or not there is an error.
  • the mathematical combination is carried out for the motor-side data by appropriate for the electrical and / or magnetic relationships in the engine determining equations whereas equations are used for the pump, which describe the hydraulic and / or mechanical system.
  • the values resulting from the respective links are compared either directly or with predetermined values stored in the memory electronics, after which the electronic data processing automatically determines whether an error exists or not.
  • the error magnitude is calculated as a deviation between a quantity derived from the engine model, e.g. B. T e or ⁇ and a corresponding from the mechanical-hydraulic model resulting size determined.
  • the method according to claim 2 has the advantage over that according to claim 1 that less storage space is required for the predetermined values, but this method requires more computing capacity of the data processing system.
  • hydraulic variable is advantageous from the pump generated pressure or differential pressure used, since this size aggregate can be detected and the provision of such Pressure sensor for numerous pump designs today to stand the technology counts.
  • Alternatively, or in addition to detecting the pressure may be as hydraulic Size advantageously also used by the pumped amount become.
  • the detection of the flow rate can also on the aggregate side, and there are also little time-consuming and Long-term stable measuring systems available.
  • an electrical motor model and for the mathematical combination of the mechanical-hydraulic pump size, a mechanical-hydraulic pump / motor model is used for the mathematical link for determining the electrical power of the motor variables.
  • the electric motor model it is preferable to use one defined by the equations (1) to (5) or (6) to (9) or (10) to (14).
  • Equations (1) to (5) represent an electric dynamic motor model for an asynchronous motor.
  • V s Z s ( s )
  • I s ⁇ ⁇ s - s ⁇ s
  • Equations (6) to (9) also represent an electric static motor model for an asynchronous motor.
  • L s di sd dt -R s i sd + z p wL s ⁇ rq + v sd
  • Equations (10) to (14) represent an electric dynamic engine model for a permanent magnet motor.
  • Claim 9 defines by way of example, in which way mathematical links be made to determine whether an error exists or not.
  • Basic idea of this concrete procedure consists, on the one hand with the help of the engine model, this is due to the electrical quantities on the motor shaft resulting Engine torque and the speed to determine, the latter can also be measured.
  • equations (16) and / or (17) is a relationship between pressure and flow rate on the one hand or between power / torque and flow rate. It is then advantageously checked with equation (15), whether with Help the engine model calculated sizes with those using the Pump model after insertion of the measured hydraulic size calculated sizes or not, with a lack of Match an error is registered. So it's compared, whether the resulting from the electric motor model drive sizes with those from the hydraulic-mechanical pump model match the resulting drive sizes or not. If this is the case, the pump set operates without errors, otherwise there is an error which may be further specified can.
  • a tolerance band by variance of at least one of the variables a h0 to a h2 , a t0 to a t2 , B and J in order to register an error only if this too is relevant to the operation.
  • two hydraulic variables can preferably be determined by measuring and the determined values are compared with predetermined values to determine the type of error, wherein in each case the predetermined values define an area in three-dimensional space and It is determined whether or not the determined quantities lie on these areas (r * 1 to r * 4 ) and, based on the combination of the values, the type of error is determined on the basis of predetermined limit value combinations.
  • the type of error can then be determined, for example, from the following table: Error type defect size r 1 , r 1 * r 2 , r 2 * r 3 , r 3 * r 4 , r 4 * comparison area Increased friction due to mechanical defects 1 0 1 1
  • the surfaces formed in the three-dimensional space on the basis of predetermined values are typically space-curved surfaces whose values have previously been determined by the factory based on the respective aggregate or aggregate type and stored in the digital data memory on the aggregate side.
  • the aforementioned comparison surfaces r * 1 to r * 4 are arranged in a three-dimensional space which at r * 1 from the torque, the flow and the rotor speed, at r * 2 from the head, the flow rate and the rotor speed, for r * 3 are formed from the torque, the delivery head and the rotor speed and for r * 4 from the torque, the delivery head and the flow rate.
  • the variables defined in the table by the comparison surfaces r * 1 to r * 4 indicate the respective operating state, wherein the number 0 means that the respective value lies within the area defined by the predetermined values and 1 outside.
  • the error combination defined in the table due to increased friction due to mechanical defects can mean bearing damage or an otherwise caused increased frictional resistance between the rotating parts and the stationary parts of the aggregate.
  • the error combination indicated under the generic term reduced delivery / missing pressure can be caused for example by errors or wear on the pump impeller or an obstacle in the pump inlet or outlet.
  • defect in the intake / missing flow error combination can be caused for example by defect of the ring seal at the suction of the pump.
  • each of the error quantities r 1 to r 4 represents a distance to the corresponding areas r * 1 to r * 4 .
  • the error quantities do not necessarily correspond to the areas r * 1 to r * 4 .
  • the error quantities r 1 to r 4 correspond to the equations (19) to (22) and correspond to the areas r * 1 to r * 4 in FIGS. 7 to 10.
  • the invention provides that upon determination of a fault, the pump unit is controlled at a different speed, then based on the resulting measurement results closer to the detected error to be able to narrow down.
  • the mechanical-hydraulic pump / motor model comprises not only the pump set itself, but also beyond at least parts of the hydraulic system acted upon by the pump, so that errors of this hydraulic system can be determined.
  • a centrifugal pump unit there are funds for detecting two for the engine power-determining electrical Sizes and means for detecting at least one variable provide hydraulic size of the pump and an electronic Evaluation device, which indicates a fault condition of the pump unit determined on the basis of the recorded quantities.
  • an electronic Evaluation device which indicates a fault condition of the pump unit determined on the basis of the recorded quantities.
  • So here is a sensor for detecting the voltage applied to the motor supply voltage and the supply current and to detect the pressure applied by the pump, preferably differential pressure and to provide the delivery rate or the speed.
  • an evaluation device which in the form of digital data processing, e.g. a microprocessor may be formed in the the inventive method is implemented by software.
  • centrifugal pumps as is the case with the mechanical-hydraulic pump model results.
  • Such pumps can be, for example, industrial pumps, Submersible pumps for sewage or water supply as well Heating circulation pumps be.
  • Particularly advantageous is a diagnostic system according to the invention in canned pumps, as early by Error detection the looping through of the can and thus exit of conveying fluid, for. B. in the living area, preventively prevented becomes.
  • Verdrängerpumpen Symposium must the mechanical-hydraulic pump model according to the adapted to different physical contexts. The same applies to the use of other engine types for the electrical Motor model.
  • means are provided according to the invention by at least to generate and transmit an error message to an am Pump unit or elsewhere arranged display element, be it in the form of one or more indicator lights or a display with alphanumeric display.
  • the transmission can be wireless, for example via infrared or radio but also wired, preferably in digital form.
  • the inventive method is shown in a simplified form with reference to FIG. 1.
  • the variable electrical power-determining variables flow, in particular the voltage V abc and the current i abc -
  • the product of these quantities defines the electrical power absorbed by the engine.
  • the torque T e on the shaft of the motor and the rotational speed ⁇ derivable from the engine as they result arithmetically on the basis of the engine model.
  • These power-dependent electrical variables of the motor are linked to the determined mechanical delivery height H (pressure) in a pump model 2, for example according to equations (16) and (17), in which case the result is compared with predetermined operating values determined on the basis of defined operating points. If these input variables agree with the specified values, the pump set operates without errors. On the other hand, if the difference is greater than a predetermined amount, then an error signal r is generated which signals a malfunction of the pump.
  • the system is structured as shown in detail in Fig. 3.
  • an electric motor model is provided whose input variables are V abc and i abc and which is based, for example, on a static motor model according to equations (6) to (9), as is well known and illustrated with reference to FIG. 5.
  • the output variable of this static engine model is the engine torque T e , which in turn flows via the equation (15) input into the mechanical part of the pump model 3 a.
  • the hydraulic part of the pump model 3b is defined by equations (16) and (17), via which the hydraulic part of the plant 4 is coupled.
  • the hydraulic part of the plant is defined by the equation (18) and shown schematically in Fig. 4, in which P in the pressure inlet of the pump, Hp the differential pressure of the pump, Q the flow rate, P out the pressure at the consumer end of the Plant and V 1 represent the flow losses within the pump.
  • Z out is the static pressure level at the consumer end of the system and Z in the pump inlet.
  • Fig. 3 thus illustrates the relationships between engine model, mechanical part of the pump model, hydraulic part of the pump model and hydraulic part of the system. While in the hydraulic parts of the pump model 3b and the hydraulic part of the system head and flow on and go, go into the hydraulic part of the pump model 3b, the rotational speed ⁇ r , which also enters the engine model 1. The torque determined from the hydraulic part of the pump model 3b in turn enters the mechanical part of the pump model 3a for determining the rotational speed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Electric Motors In General (AREA)
  • Fluid-Pressure Circuits (AREA)
EP04002979.5A 2004-02-11 2004-02-11 Procédé de détection des erreurs de fonctionnement d'une unité de pompage Expired - Lifetime EP1564411B2 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP04002979.5A EP1564411B2 (fr) 2004-02-11 2004-02-11 Procédé de détection des erreurs de fonctionnement d'une unité de pompage
AT04002979T ATE389807T1 (de) 2004-02-11 2004-02-11 Verfahren zur ermittlung von fehlern beim betrieb eines pumpenaggregates
DE502004006565T DE502004006565D1 (de) 2004-02-11 2004-02-11 Verfahren zur Ermittlung von Fehlern beim Betrieb eines Pumpenaggregates
US10/597,892 US8070457B2 (en) 2004-02-11 2005-02-05 Method for determining faults during the operation of a pump unit
CN200580008075.3A CN1938520B (zh) 2004-02-11 2005-02-05 用于确定泵单元运行时的故障的方法
PCT/EP2005/001193 WO2005078287A1 (fr) 2004-02-11 2005-02-05 Procede de determination d'anomalies lors du fonctionnement d'un groupe de pompage
US13/284,049 US8353676B2 (en) 2004-02-11 2011-10-28 Method for determining faults during the operation of a pump unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04002979.5A EP1564411B2 (fr) 2004-02-11 2004-02-11 Procédé de détection des erreurs de fonctionnement d'une unité de pompage

Publications (3)

Publication Number Publication Date
EP1564411A1 true EP1564411A1 (fr) 2005-08-17
EP1564411B1 EP1564411B1 (fr) 2008-03-19
EP1564411B2 EP1564411B2 (fr) 2015-08-05

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ID=34684659

Family Applications (1)

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EP04002979.5A Expired - Lifetime EP1564411B2 (fr) 2004-02-11 2004-02-11 Procédé de détection des erreurs de fonctionnement d'une unité de pompage

Country Status (6)

Country Link
US (2) US8070457B2 (fr)
EP (1) EP1564411B2 (fr)
CN (1) CN1938520B (fr)
AT (1) ATE389807T1 (fr)
DE (1) DE502004006565D1 (fr)
WO (1) WO2005078287A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008119932A1 (fr) * 2007-03-29 2008-10-09 Retroflo Limited Détection du blocage d'une pompe de puisard
EP2039939A1 (fr) 2007-09-20 2009-03-25 Grundfos Management A/S Procédé de surveillance d'un dispositif de transformation d'énergie
WO2010094606A3 (fr) * 2009-02-17 2011-01-13 Human Med Ag Équipement et procédé de transport d'un liquide dans un but médical
EP1914428A3 (fr) * 2006-10-13 2015-09-09 Regal Beloit America, Inc. Contrôleur pour moteur et procédé de contrôle du moteur
DE102013211345B4 (de) 2013-06-18 2022-12-01 Robert Bosch Gmbh Verfahren zur Zustandsüberwachung an Verdrängereinheiten
DE102022113913A1 (de) 2022-06-02 2023-12-07 Liebherr-Aerospace Lindenberg Gmbh Vorrichtung und Verfahren zur Zustandsüberwachung einer Elektromotorpumpe

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US9689396B2 (en) * 2011-11-01 2017-06-27 Regal Beloit America, Inc. Entrapment detection for variable speed pump system using load coefficient
AU2013204013B2 (en) 2013-03-15 2015-09-10 Franklin Electric Company, Inc. System and method for operating a pump
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DE102013109411A1 (de) * 2013-08-29 2015-03-05 Prominent Gmbh Verfahren zur Bestimmung von hydraulischen Parametern
US9230208B2 (en) 2013-12-18 2016-01-05 International Business Machines Corporation Haptic-based artificial neural network training
CN106066621A (zh) * 2016-07-27 2016-11-02 霍州煤电集团有限责任公司 一种煤矿中央泵房水泵的预判维护及远程控制方法
US11286917B2 (en) 2016-10-21 2022-03-29 Franklin Electric Co., Inc. Motor drive system and method
EP4365453A3 (fr) * 2016-12-30 2024-07-10 Grundfos Holding A/S Procédé de fonctionnement d'un groupe motopompe à commande électronique
USD880670S1 (en) 2018-02-28 2020-04-07 S. C. Johnson & Son, Inc. Overcap
USD872847S1 (en) 2018-02-28 2020-01-14 S. C. Johnson & Son, Inc. Dispenser
USD881365S1 (en) 2018-02-28 2020-04-14 S. C. Johnson & Son, Inc. Dispenser
USD872245S1 (en) 2018-02-28 2020-01-07 S. C. Johnson & Son, Inc. Dispenser
KR102103146B1 (ko) * 2018-03-14 2020-04-22 (주)아이티공간 구동부의 정밀 예지 보전방법
KR102103151B1 (ko) * 2018-03-14 2020-04-22 (주)아이티공간 구동부의 정밀 예지 보전방법
USD852938S1 (en) 2018-05-07 2019-07-02 S. C. Johnson & Son, Inc. Dispenser
USD853548S1 (en) 2018-05-07 2019-07-09 S. C. Johnson & Son, Inc. Dispenser
EP3567256A1 (fr) * 2018-05-11 2019-11-13 Grundfos Holding A/S Module de surveillance et procédé permettant d'identifier un scénario de fonctionnement dans une station de pompage des eaux usées
CN111089819B (zh) * 2019-12-17 2023-05-02 重庆南方数控设备股份有限公司 基于血流变仪的泵工作状态预判检测的血液检测方法
US11454225B2 (en) 2020-04-29 2022-09-27 Halliburton Energy Services, Inc. Single motor-driven dual pump detachment monitoring algorithm
RU2743866C1 (ru) * 2020-06-30 2021-03-01 Федеральное государственное бюджетное образовательное учреждение высшего образования "Омский государственный технический университет" (ОмГТУ) Способ определения давления центробежного насоса с асинхронным электроприводом
EP4019779A1 (fr) 2020-12-23 2022-06-29 Grundfos Holding A/S Système et procédé de surveillance de pompe pour associer un état de fonctionnement actuel d'un système de pompe à un ou plusieurs scénarios de panne
CN112983844B (zh) * 2021-03-01 2021-10-08 合肥恒大江海泵业股份有限公司 一种潜水电泵监测控制系统
CN114876782B (zh) * 2022-05-13 2024-03-12 三一汽车制造有限公司 液压泵故障检测方法、装置及作业机械

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1914428A3 (fr) * 2006-10-13 2015-09-09 Regal Beloit America, Inc. Contrôleur pour moteur et procédé de contrôle du moteur
WO2008119932A1 (fr) * 2007-03-29 2008-10-09 Retroflo Limited Détection du blocage d'une pompe de puisard
EP2039939A1 (fr) 2007-09-20 2009-03-25 Grundfos Management A/S Procédé de surveillance d'un dispositif de transformation d'énergie
WO2009039934A1 (fr) * 2007-09-20 2009-04-02 Grundfos Management A/S Procédé de surveillance d'un système de conversion d'énergie
JP2010539380A (ja) * 2007-09-20 2010-12-16 グルンドフォス マネージメント アー／エス エネルギー変換装置を監視する方法
CN101802413B (zh) * 2007-09-20 2014-07-30 格伦德福斯管理联合股份公司 用于监测能量转换装置的方法
EP2039939B1 (fr) 2007-09-20 2017-08-09 Grundfos Management A/S Procédé de surveillance d'un dispositif de transformation d'énergie
WO2010094606A3 (fr) * 2009-02-17 2011-01-13 Human Med Ag Équipement et procédé de transport d'un liquide dans un but médical
DE102013211345B4 (de) 2013-06-18 2022-12-01 Robert Bosch Gmbh Verfahren zur Zustandsüberwachung an Verdrängereinheiten
DE102022113913A1 (de) 2022-06-02 2023-12-07 Liebherr-Aerospace Lindenberg Gmbh Vorrichtung und Verfahren zur Zustandsüberwachung einer Elektromotorpumpe

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EP1564411B2 (fr) 2015-08-05
US8070457B2 (en) 2011-12-06
CN1938520B (zh) 2011-07-20
US20120101788A1 (en) 2012-04-26
EP1564411B1 (fr) 2008-03-19
ATE389807T1 (de) 2008-04-15
US20080240931A1 (en) 2008-10-02
WO2005078287A1 (fr) 2005-08-25
CN1938520A (zh) 2007-03-28
DE502004006565D1 (de) 2008-04-30
US8353676B2 (en) 2013-01-15

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