EP3449132A1 - Procédé de détection d'un état de fonctionnement anormal d'un groupe de pompage - Google Patents

Procédé de détection d'un état de fonctionnement anormal d'un groupe de pompage

Info

Publication number
EP3449132A1
EP3449132A1 EP18719751.2A EP18719751A EP3449132A1 EP 3449132 A1 EP3449132 A1 EP 3449132A1 EP 18719751 A EP18719751 A EP 18719751A EP 3449132 A1 EP3449132 A1 EP 3449132A1
Authority
EP
European Patent Office
Prior art keywords
pump unit
speed
pump
abnormal operating
signal
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
EP18719751.2A
Other languages
German (de)
English (en)
Other versions
EP3449132B1 (fr
Inventor
Jens Olav FIEDLER
Tilman Philip SANDERS
Martin Kiel
Martin Oettmeier
Benedikt Meier
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.)
Wilo SE
Original Assignee
Wilo SE
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.)
Filing date
Publication date
Application filed by Wilo SE filed Critical Wilo SE
Publication of EP3449132A1 publication Critical patent/EP3449132A1/fr
Application granted granted Critical
Publication of EP3449132B1 publication Critical patent/EP3449132B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • 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
    • 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
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
    • 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
    • F04D15/0077—Safety measures
    • 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
    • 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
    • F04B2201/00—Pump parameters
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/1201—Rotational speed of the axis
    • 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
    • F04B2201/00—Pump parameters
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/1202—Torque on the axis
    • 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
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0201—Current

Definitions

  • the present invention relates to a method for detecting an abnormal operating state of a device operated at a predeterminable speed
  • Variable speed pump unit for fluid delivery for fluid delivery.
  • Abnormal operating conditions occur again and again in pump sets and can lead to damage or even total failure of the pump set.
  • Examples of abnormal operating conditions are dry running, cavitation on the impeller or bearing wear, bearing damage.
  • sealing elements such. B. mechanical seals used, the leakage of the fluid from the pump or at
  • the sealing surfaces of the sealing elements are friction surfaces which are lubricated by the conveyed medium. In the case of dry running these friction surfaces are no longer or not sufficiently lubricated and can wear out very quickly. Early detection of dry running can prevent this.
  • Power consumption of the pump set depends on the speed and the flow rate. Dry running generally results in lower power at the same speed than in the case of a filled one
  • Cavitation is the phenomenon that occurs during operation of the
  • Excitation signal to calculate an evaluation signal and to determine whether an abnormal operating condition exists.
  • the method may be software-implemented in electronics of the pump. Thus, neither a sensor external to the pump electronics nor additional hardware is required. Furthermore, the method can be used reliably over the entire speed range, since it has a very good suppression of measurement noise. It is therefore not limited to a certain speed range contrary to the methods of the prior art.
  • the pump unit may be an electric motor operated centrifugal pump, such as a heating pump in a heating system or a
  • Coolant pump in a cooling system may be a
  • modulating in the sense of the invention is generally to be understood as a change, however, the type, height and speed of the excitation signal is not limited in any way
  • control of the pump set under This term is also to be understood as a regulation, since a regulation only contains a controller with a feedback of a specific size.
  • the detection of an abnormal operating state can take place, for example, by comparing the evaluation signal with a decision threshold.
  • An abnormal operating state can then be concluded if the evaluation signal deviates from a normal range (permissible range in operation).
  • the decision threshold may form a boundary of this normal range, for example a minimum curve or a maximum curve of the normal range, or a distance to this range, in order to avoid false detections.
  • it must therefore be checked whether the evaluation signal lies above or below the decision threshold.
  • the decision threshold is thus dependent on the abnormal one
  • a particular decision threshold is associated with a particular abnormal operating condition.
  • a first abnormal operating condition can be obtained by comparing the
  • Evaluation signal with a first decision threshold and a second abnormal operating state can be determined by comparing the evaluation signal with another, second decision threshold. Similarly, there may be a third or further decision threshold (s).
  • the decision threshold defines an upper limit or a lower limit of the allowable normal range. If, for example, it defines a lower limit in the case of the first abnormal operating state, it may be based on this first abnormal operating state are closed when the evaluation signal is below the first decision threshold.
  • the decision threshold may in the simplest case be one
  • the decision threshold may alternatively be defined by a curve, preferably a straight line, which is a mathematical
  • the decision threshold is a function of the speed, it is achieved that it can be set in accordance with the speed dependency of the normal or fault mode, so that the decision against
  • the decision threshold also called the threshold curve
  • the evaluation signal can be formed from the integral of the product of the system response and a periodic function of the same or a multiple of the frequency of the excitation signal over a predetermined integration period. It should be noted at this point that integral formation within the meaning of the invention is also to be understood as a summation of values which results in the numerical implementation of the method
  • the evaluation signal may preferably be based on the following
  • Integration period T X (t) is the system response, S (t) is the periodic function, ki is a positive integer and ⁇ is the frequency of the excitation signal.
  • the periodic function may be a sine function.
  • a cosine function a combination of a sine function and a cosine function, a combination of several sine functions or cosine functions, or a combination of a plurality of sine functions and cosine functions may also be used as a periodic function
  • the manipulated variable applied to the excitation signal is a
  • Target speed or setpoint torque of the pump set i. a
  • the method according to the invention can be implemented particularly simply because the speed or the torque is often a controlled variable in a pump unit, i. a variable whose height is given by a setpoint.
  • Speed or torque controls are known per se in pump units. The control of the pump set then tries to regulate the setpoint. The periodic excitation of the desired speed or the desired torque is a simple measure to achieve a modulation of the size. Ultimately, this is the output from the drive motor
  • the manipulated variable may be a current of the pump unit.
  • This is especially suitable for pump sets a suitable control variable whose electric drive motor is controlled by a vector control such as the field-oriented control (FOR).
  • FOR field-oriented control
  • Motor models here are formed current components id and iq, which define the rotating with the frequency of the stator field current pointer.
  • id-current the field can be influenced, with the iq-current the torque.
  • modulating the current a modulation of the rotational speed or of the torque can consequently be achieved indirectly.
  • the hydraulic variable to be modulated may suitably be the delivery head H or the differential pressure ⁇ generated by the pump unit. Because the
  • the mechanical variable used is preferably the torque output by the pump unit or the actual speed.
  • An electrical quantity as the system response can be, for example, the electrical power P e i picked up by the electric motor of the pump unit or the current. The change of at least one of these variables due to the modulation of the hydraulic variable is considered according to the invention as a system response.
  • the target speed can be modulated and the resulting electrical power consumption can be evaluated.
  • the delivered power consumption instead of the delivered
  • Torque or the actual speed can be used for evaluation. And instead of the excitation of the target speed, the target torque can be excited and the resulting actual speed, the torque output or the electrical power consumption are evaluated.
  • the periodic excitation signal may ideally be a sinusoidal signal or a sinusoidal-containing signal. The latter can also be, for example, a triangular or sawtooth signal.
  • the excitation signal corresponds to a weighting factor of the periodic function, which is used for the formation of the evaluation signal. The weighting factor determines the amplitude of the modulation of the manipulated variable.
  • the frequency of the excitation signal can be between 0.1 Hz and 100 Hz, preferably between 0.5 Hz and 10 Hz. It should be noted that the frequency is to be selected depending on the hydraulic system in which the pump unit is operated , Thus, the frequency due to the inertia of the rotor, the impeller and the pumped liquid upwards limits. In addition, the excitation frequency and speed controller of the
  • the speed controller may not adjust the modulated setpoint speed fast enough. In this special case, however, the
  • the disadvantage of too low a frequency is that the response time of the calculation of the evaluation signal increases in accordance with the period, so that the process takes longer. If the frequency is too low, furthermore, the system response may be weak, so that the information about the abnormal operating state is only weakly present in the evaluation signal. That's why the frequency is too low, furthermore, the system response may be weak, so that the information about the abnormal operating state is only weakly present in the evaluation signal. That's why the
  • Excitation frequency should not be too small, for example, not less than 0.1 Hz.
  • the amplitude of the excitation signal may preferably be less than 25% of the
  • Be speed setpoint It can in particular between 0.1% and 25% of
  • Speed setpoint At a setpoint speed of, for example, 2000 rpm, it is thus possible to use a speed fluctuation of ⁇ 2 rpm to ⁇ 500 rpm.
  • This integration period T may be at least one period or a multiple of the period of the excitation signal.
  • the calculation of the evaluation signal or the integration during the modulation of the hydraulic variable, in particular the target rotational speed can be performed.
  • the calculation thus does not take place until the modulation has ended. This prevents that only the decaying system response is analyzed.
  • the calculation of the evaluation signal or the integration begins only after a certain period of time, for example after one or a few periods of the excitation signal have elapsed. This ensures that the analysis of the system response takes place temporally only when the system consisting of the pump unit and connected pipelines has settled. Transient effects thus do not affect the evaluation of the system response.
  • the method according to the invention is carried out continuously during operation of the pump unit. As a result, changes in the operating state can be detected immediately. Alternatively, the method can be executed at suitable times, at intervals, in particular regularly.
  • the method according to the invention can be started by a trigger during pump operation.
  • a trigger may be, for example, that another method for detecting an abnormal operating condition, as is known in the art and may be implemented in an electronics of the pump in parallel with the method according to the invention, recognizes just such an abnormal operating condition. This one
  • the method according to the invention can be activated during operation of the pump unit, if the use of a method known in the prior art for detecting an abnormal
  • Operating state detects an abnormal operating condition. If an abnormal operating state is detected with the method according to the invention, an error signal can be output, for example visually, acoustically or as an electronic message, so that a user or service technician or a connected system (eg heating system or building management system) is informed about the abnormal operating state. This can then
  • the pump set may be shut down to prevent further or worse damage to the pump set or other components of the system.
  • the detection of the mechanical and / or electrical quantity as a system response to the modulation can be done either at discrete times or continuously.
  • the system response then exists as a series of values so that multiplication by the periodic function and integration of the product thus obtained can be done at any time.
  • the pump unit may be, for example, a heating pump, coolant pump or a drinking water pump. Preferably, it is in the
  • Figure 1 diagram with a dry-running curve, a wet-run curve and an intermediate decision threshold according to the prior art
  • FIG. 3 System for applying the method according to the invention
  • FIG. 4 Structure picture of cooperating functional units for the execution of the
  • Figure 5 Diagram with measured wet and dry running operations
  • Figure 1 shows a diagram that illustrates the mode of action of a method for determining a dry run according to the prior art in a pump unit during operation.
  • the diagram shows the hydraulic power P_hydr above the actual speed njst.
  • a measured in normal, wet-running operating case curve 11 and a measured in the abnormal, dry-running operating curve 9 are shown. It is clear that the wet run curve 11 relative to the dry-running curve 9 at the same speed indicates a higher performance.
  • the power output of the pump set is therefore always lower in the case of dry running, at least if it is not
  • a curve is drawn approximately centrally between the two curves 9, 11, which forms a decision threshold 10. It serves as a reference for the decision as to whether or not there is dry running with regard to the current speed and the currently available power. This determination can be made by comparison with the decision threshold 10. If the power is below the decision threshold 10, close to dry running.
  • the electric power Pei is determined and
  • Dry run detection used. This method provides reliable detection of dry running at higher speeds. However, since the wet-running curve 1 and the dry-running curve 9 are very close to each other at low speeds, is a reliable
  • the method of hydraulic determination of an abnormal operating condition described below exploits the dynamic behavior of the system, which is formed by pump unit 1 and connected pipelines and is analyzed by a targeted excitation.
  • FIG. 3 A model of the system in which a variant of the method according to the invention can be applied is shown in FIG. 3 as a block diagram. There, a variable speed centrifugal pump unit 1 is shown, with a
  • Pipe system 5 is connected respectively involved in this.
  • the system may for example be a heating system, the pump unit 1 corresponding to a heating pump.
  • the piping system 5 is then formed by the leading to the radiators or heating circuits and leading from these to a central heating source lines.
  • a heating source lines For example, as liquid, water can circulate in the pipelines 5 which is driven by the pump unit 1.
  • the pump unit 1 consists of a pump unit 2, which forms the hydraulic part of the unit 1, an electric motor drive unit 3, which forms the electro-mechanical part of the unit 1, and a control electronics 4 for controlling and / or regulating the drive unit.
  • the drive unit 3 consists of an electromagnetic part 3a and a mechanical part 3b.
  • the control electronics 4 comprises, on the one hand, hardware 4b and, on the other hand, software 4a.
  • the hardware 4b also includes power electronics, such as a frequency converter, in order to set a specific rotational speed on the drive unit.
  • the control electronics 4 is a solid speed no predetermined. Although this is shown here as coming from outside the control electronics 4, for example by manual specification, it can alternatively also by a characteristic control or a dynamic, needs-based adjustment of the operating point of
  • Drive unit 3 calculates the control electronics 4, or their software 4a, a voltage U of the power electronics 4b is specified so that the drive unit 3, a corresponding electrical power Pei, is available.
  • the electromagnetic part 3a of the drive unit 3 which describes the stator, rotor and their electromagnetic coupling, generates a mechanical torque Mist from the current Ui. This accelerates the rotor and leads to a corresponding speed nist of the drive unit 3, which is included in the mechanical part 3b of the model of the drive unit 3. With the rotational speed s m t is now the seated on the rotor shaft of the hydraulic pump impeller part 2 of the
  • the pump unit 1 driven.
  • the pump unit 1 thereby generates a differential pressure between suction and pressure side and a delivery height H, which generates a more or less large volume flow Q in the piping system 5 depending on the pipe resistance.
  • a hydraulic torque M d can be defined, which counteracts the engine torque crap as a braking torque.
  • FIG. 1 The basic sequence of the method according to the invention is shown in FIG. The process is carried out in the intended operation of the pump set, i. when the pump unit 1 is connected to a pipe power system 5 and operated at any desired speed no.
  • step S1 Starting from the specification of the setpoint speed no in step S1, this includes
  • step S3 Determination of the system response, for example by measurement, step S3; - Calculation of an evaluation signal due to the system response, step SA and
  • the method may also be used to detect other errors in the pump set or in the overall system, in which case the determined evaluation signal is also outside a normal range, which is a corresponding decision threshold is limited.
  • the excitation of the system takes place in that a manipulated variable, here the stationary nominal speed no, is modulated with an excitation signal fA (t), so that the new target speed nsoii to be set by the pump electronics 4 is the sum of the previously specified nominal speed no and the excitation signal fA (t) gives:
  • the excitation of the speed is here purely sinusoidal, but other modulations are conceivable.
  • the amplitude ni is between 0.1% and 25% of the setpoint speed no and may be set at the factory and fixed, for example to 1%.
  • the excitation frequency f or ⁇ should be calculated so that the speed controller of the
  • Rate of change of the speed can be sufficiently fast following. In this case, then no correction of the controller parameters, eg the Proportional gain, be made.
  • a frequency f of 1 Hz is used.
  • Evaluate pump set especially if the actual speed of the modulated setpoint speed can follow. If the actual speed can not follow the target speed, it is advisable to evaluate two or more sizes, e.g. a mechanical quantity such as the actual speed, and an electrical quantity like that of the engine
  • the recorded electrical power P e i is used as the system response X (t) to the speed modulation. This can be measured or directly from the measured current and the measured or calculated
  • the torque or the absorbed current can be used as a system response.
  • the determination of the system response may be done by sampling at discrete times or continuously such that the system response X (t) is present as a discrete or continuous series of measurements. This is covered by step S3 of FIG. For the sake of simplicity, only the case of the continuous series will be dealt with here.
  • the evaluation signal l (t) is first determined. This is done by first multiplying the system response X (t) by a periodic function S (t), ie by constructing the product of the system response X (t) and this periodic function S (t).
  • the time to is consequently in the past and does not represent the present at the time t.
  • the integration of the integral can go from t-T to t. To the present t do not agree with the integration variables
  • Evaluation signal is in normal operation above a normal range downwardly bounding minimum curve 15a. At the top, the normal range is limited by a maximum curve 15b. A dry run is present as soon as the
  • Evaluation signal l (t) is below the minimum curve 15a. This is examined in step S5 on the basis of decision threshold 10. It makes sense for the decision threshold 10 to maintain a distance to the minimum curve 15a
  • step S8 If, for example, in the case of dry running, the value of the evaluation signal l (t) is above the decision threshold 10, then there is no dry run, see no branch and step S8.
  • the method may then continue at the time the system is initiated, step S2. Alternatively, the method may be terminated and reactivated at a later time, such as timed or triggered by another trigger.
  • the signal l (t) in this case is below another minimum curve or above a maximum curve.
  • step S6 If, for example, in the case of dry running, the value of the evaluation signal l (t) is below the decision threshold 0, then there is an abnormal operating state, see Yes branch and step S6. An error message can then be output, step S7, for example as an optical or acoustic signal on
  • Fig. 4 These functional units comprise a modulation unit 12, the drive motor 3, a
  • System response determination unit 13 the dry run detection 14 and the reaction unit 4a 'may also be part of the pump electronics 4, in particular their software. But it could also be partially formed by hardware components.
  • the system response determination unit 13 may include a sensor to determine the electrical power consumption, and / or the reaction unit 4a 'may include a switch to the pump unit
  • the modulation unit 12 is supplied to the speed setpoint no.
  • Modulation unit 12 generates the periodic excitation signal fA (t) in the form of a sinusoidal signal m sin (red) and adds this to the desired speed value no, so that a new desired speed value no + ni-sin (cat ) output from modulation unit 12.
  • the sinusoidal signal S (t) sin (cot) is output separately from the modulation unit 12 from the excitation signal fA (t) and the
  • System response determination unit 13 is provided.
  • the excitation signal fA (t) can also be output directly.
  • the new speed setpoint no + ni-sin (cot) is set in the drive motor 3 by means of the power electronics 4b, not shown in FIG.
  • the path of this signal is not differentiated here. It corresponds to the usual way in the speed setpoint specification of an electric motor.
  • the speed setting of the drive motor 3 has a specific
  • the calculated evaluation signal l (to), l (t) becomes
  • Reaction unit 4a which responds with a predetermined measure to the detected dry run, for example, displays the error signal, forwards to a higher-level control or control technology and / or shuts off the drive motor 3.
  • a higher-level control eg. B. a

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Abstract

L'invention concerne un procédé de détection d'un état de fonctionnement anormal d'un groupe de pompage (1) à régulation de la vitesse de rotation qui fonctionne à une vitesse de rotation (n 0) pouvant être prédéfinie. Une grandeur de commande (nsoll) du groupe de pompage (1) est ici soumise à un signal d'excitation (fA(t)) périodique ayant une fréquence (f) définie de manière à moduler une grandeur hydraulique (H, Δρ) du groupe de pompage (1). Un signal d'interprétation (l(t0), l(t)) est ensuite calculé à partir d'une grandeur mécanique et/ou électrique (Pel) du groupe de pompage (1) en tant que réponse du système (X(t)) au signal d'excitation (fA(t)). La présence d'un état de fonctionnement anormal est déterminée à partir dudit signal d'interprétation. L'invention concerne en outre une électronique de pompe destinée à commander et/ou à réguler la vitesse de rotation de consigne d'un groupe de pompage (1), laquelle est conçue pour mettre en œuvre le procédé, ainsi qu'un groupe de pompage équipé d'une telle électronique de pompe.
EP18719751.2A 2017-04-28 2018-03-27 Procédé de détection d'un état de fonctionnement anormal d'un groupe de pompage Active EP3449132B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017004097.4A DE102017004097A1 (de) 2017-04-28 2017-04-28 Verfahren zur Detektion eines abnormalen Betriebszustands eines Pumpenaggregats
PCT/EP2018/000120 WO2018197033A1 (fr) 2017-04-28 2018-03-27 Procédé de détection d'un état de fonctionnement anormal d'un groupe de pompage

Publications (2)

Publication Number Publication Date
EP3449132A1 true EP3449132A1 (fr) 2019-03-06
EP3449132B1 EP3449132B1 (fr) 2023-08-16

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EP18719751.2A Active EP3449132B1 (fr) 2017-04-28 2018-03-27 Procédé de détection d'un état de fonctionnement anormal d'un groupe de pompage

Country Status (4)

Country Link
EP (1) EP3449132B1 (fr)
CN (1) CN110192036B (fr)
DE (1) DE102017004097A1 (fr)
WO (1) WO2018197033A1 (fr)

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CN117846949A (zh) * 2020-07-17 2024-04-09 安徽威灵汽车部件有限公司 电子水泵的干转检测方法、装置、电子设备及存储介质
CN114382703B (zh) * 2022-01-12 2024-02-02 江苏徐工工程机械研究院有限公司 排涝机器人的控制方法和排涝机器人
DE102022113913A1 (de) 2022-06-02 2023-12-07 Liebherr-Aerospace Lindenberg Gmbh Vorrichtung und Verfahren zur Zustandsüberwachung einer Elektromotorpumpe
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CN110192036B (zh) 2021-07-06
DE102017004097A1 (de) 2018-10-31
CN110192036A (zh) 2019-08-30
WO2018197033A1 (fr) 2018-11-01

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