EP2831418B1 - Système et procédé pour surveiller et commander la cavitation dans des pompes volumétriques - Google Patents

Système et procédé pour surveiller et commander la cavitation dans des pompes volumétriques Download PDF

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Publication number
EP2831418B1
EP2831418B1 EP12872798.9A EP12872798A EP2831418B1 EP 2831418 B1 EP2831418 B1 EP 2831418B1 EP 12872798 A EP12872798 A EP 12872798A EP 2831418 B1 EP2831418 B1 EP 2831418B1
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Prior art keywords
pump
cavitation
ratio
severity
application based
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EP12872798.9A
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German (de)
English (en)
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EP2831418A4 (fr
EP2831418A2 (fr
Inventor
Dan YIN
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Circor Pumps North America LLC
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Circor Pumps North America LLC
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/08—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/28—Safety arrangements; Monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/80—Diagnostics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/86—Detection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/90—Remote control, e.g. wireless, via LAN, by radio, or by a wired connection from a central computer

Definitions

  • the disclosure is generally related to the field of monitoring systems for machinery, and more particularly to an improved system and method for monitoring pump cavitation and for controlling pump operation based on such monitoring.
  • the condition of rotating machinery is often determined using visual inspection techniques performed by experienced operators. Failure modes such as cracking, leaking, corrosion, etc. can often be detected by visual inspection before failure is likely.
  • the use of such manual condition monitoring allows maintenance to be scheduled, or other actions to be taken, to avoid the consequences of failure before the failure occurs. Intervention in the early stages of deterioration is usually much more cost effective than undertaking repairs subsequent to failure.
  • Patent publications US 5 601 414 A showing a control logic for sensing abnormal pressure conditions by a pressure sensing device and for modifying pump operation based thereon
  • US 6 663 349 B1 showing a pump control system making use of a cavitation system of a cavitation detection component
  • US 2002/123856 A1 showing a cavitation monitoring system with a user alert functionality
  • WO 2009/024769 A2 showing a system for improving efficiency of a pump by controlling operation of the pump provide information useful for understanding the invention.
  • a system for monitoring and controlling a positive displacement pump according to claim 1.
  • pressure is developed from the inlet or suction port of the pump to the outlet or discharge port in stage-to-stage increments.
  • Each stage is defined as a moving-thread closure or isolated volume formed by the meshing of pump rotors between the inlet and outlet ends of the pump.
  • Pressure is developed along the moving-thread closures as liquid progresses through the pump.
  • the number of closures is usually proportional to the desired level of outlet pressure delivered, i.e., the greater the pressure, the greater the number of closures necessary.
  • the closures enable the pump to develop an internal pressure gradient of progressively increasing pressure increments.
  • a rotary axial-screw pump can be used to pump a broad range of fluids, from high-viscosity liquids to relatively light fuels or water/oil emulsions.
  • Cavitation usually occurs when the pressure of a fluid drops below its vapor pressure, allowing gas to escape from the fluid.
  • the pump exerts increasing pressure on a gaseous liquid, unstable stage pressures result, leading to collapse of the gas bubbles in the pump's delivery stage.
  • FIGS. 1 and 2 an intelligent cavitation monitoring system 1 mounted to an exemplary pump 2, which in this embodiment is a screw-pump.
  • the system 1 includes a plurality of pressure sensors mounted at appropriate locations throughout the pump 2. These sensors include a suction pressure transducer 4, an interstage pressure transducer 6, and a discharge pressure transducer 8.
  • the suction and discharge pressure sensors 4, 8 are separated by a distance " L " while the suction and interstage pressure sensors 4, 6 are separated by a distance " Li ".
  • the suction pressure sensor 4 can provide a signal representative of the suction pressure " Ps " to the system 1
  • the interstage pressure sensor can provide a signal representative of an interstage pressure " Pi " to the system 1
  • the discharge pressure sensor can provide a signal representative of the discharge pressure " Pd " to the system 1.
  • the system 1 in turn, can employ these signals to determine whether an undesirable cavitation condition exists in the pump 2.
  • FIG. 3 shows the system 1 including a controller 28 coupled to the pressure sensors 4, 6, 8 via a communications link 30.
  • the sensors 4, 6, 8 may send signals to controller 28 representative of pressure conditions at multiple locations within the pump 2, as previously noted.
  • the controller 28 may have a processor 32 executing instructions for determining, from the received signals, whether the one or more operating conditions of the pump 2 are within normal or desired limits.
  • a non-volatile memory 34 may be associated with the processor 32 for storing program instructions and/or for storing data received from the sensors.
  • a display 36 may be coupled to the controller 28 for providing local and/or remote display of information relating to the condition of the pump 2.
  • An input device 38 such as a keyboard, may be coupled to the controller 28 to allow a user to interact with the system 1.
  • the communications link 30 is illustrated as being a hard wired connection. It will be appreciated, however, that the communications link 30 can be any of a variety of wireless or hard-wired connections.
  • the communication link 30 can be a Wi-Fi link, a Bluetooth link, PSTN (Public Switched Telephone Network), a cellular network such as, for example, a GSM (Global System for Mobile Communications) network for SMS and packet voice communication, General Packet Radio Service (GPRS) network for packet data and voice communication, or a wired data network such as, for example, Ethernet/Internet for TCP/IP, VOIP communication, etc.
  • PSTN Public Switched Telephone Network
  • GSM Global System for Mobile Communications
  • GPRS General Packet Radio Service
  • Communications to and from the controller can be via an integrated server that enables remote access to the controller 28 via the Internet.
  • data and/or alarms can be transferred thru one or more of e-mail, Internet, Ethernet, RS-232/422/485, CANopen, DeviceNet, Profitbus, RF radio, Telephone land line, cellular network and satellite networks.
  • the sensors coupled to the pump 2 can be used to measure a wide variety of operational characteristics of the pump. These sensors can output signals to the controller 28 representative of those characteristics, and the controller 28 can process the signals and present outputs to a user.
  • the output information can be stored locally and/or remotely. This information can be used to track and analyze operational characteristics of the pump over time.
  • the suction, interstage, and discharge pressure sensors 4, 6, 8 may provide signals to the controller 28 that the controller can use to determine if an undesirable cavitation condition exists at one or more locations within the pump 2.
  • the discharge pressure Pd , interstage pressure Pi and suction pressure Ps will indicate a certain desired pressure gradient at any given time. If, however, the pump experiences undesired cavitation, the desired pressure gradient will not be able to be maintained.
  • the interstage pressure Pi may decrease.
  • the interstage pressure Pi will not only decrease, it will also fluctuate.
  • FIG. 2 shows the relative locations of the sensors 4, 6, 8 in relation to an exemplary positive displacement screw pump 2
  • FIG. 4 shows where suction, interstage and discharge pressure sensors 4, 6, 8 may be positioned in an exemplary positive displacement gear pump 2A.
  • the interstage pressure sensor 6 may again be located at L i distance from the location of the suction pressure sensor 4, while the distance between the suction pressure sensor 4 and the discharge pressure sensor 8 may be L .
  • the previously described ratio R again applies as a ratio indicating a severity level of cavitation in the pump 2A.
  • Similar arrangements in other positive displacement pumps can be used such as progressive cavity pumps, (i.e., rotary vane pumps, internal gear pumps, external gear pumps, vane, geared screw pumps).
  • R T 0.5 or 50%.
  • an actual cavitation severity level R a P i ⁇ P s P d ⁇ P s
  • This simplified relationship only utilizes two pressure measuring components, one for measuring discharge pressure ( Pd ), and the other is used for measuring interstage pressure ( Pi ).
  • the disclosed system 1 enables a user to input an application based cavitation severity level R u , which is smaller than system's target level R T .
  • the actual cavitation severity level R a is then compared to the application based cavitation severity level R u , and if R a is determined to be lower than the defined R u level, the system identifies the cavitation level as being at an unacceptable level for the application.
  • the lower the R u value the more severe the cavitation a pump is allowed to experience.
  • R u may be selected to be a value that corresponds to a cavitation level that involves no obvious noises and/or vibration.
  • the system 1 acquires the pressure signals from the sensors 4, 6, 8 and converts them to digital values for further computation.
  • the actual system's cavitation severity ratio R a can then be calculated according to formula (3) or (4).
  • multiple samples may be obtained for a given sampling cycle to obtain an average reading to make sure the value is stable and substantially free of the effects of pressure fluctuation caused by gear teeth or screw ridges.
  • the value R a can then be compared with target level R T as well as the user input cavitation severity level R u .
  • the speed of the pump 2 may be automatically adjusted based on this comparison.
  • pump speed 2 may be automatically increased or decreased based on the calculated actual severity level R a .
  • R a is equal to, or within a predetermined range of, the user's application based severity level R u , then a current operation condition of the pump can be maintained. In some embodiments, this range may be about 5%. This is because even if the severity level indicates that the pump 2 is cavitating, the level of cavitation has been determined by the user to be acceptable for the particular application.
  • the speed of the pump 2 may be increased until R a is equal to, or within a predetermined range of, the user's application based level R u .
  • the speed of the pump may be decreased until R a is equal to, or within a predetermined range of, the user's application based level R u . In some embodiments, this range may be about 5%.
  • the user may also choose to change pump speed or to stop the pump 2 based on R u , R T and the calculated value for R a .
  • the user may configure the system 1 so that the pump is stopped whenever R a is less than application based level R u .
  • Other predetermined stop levels may also be used.
  • an absolute lower limit of the cavitation severity level R L can be defined in order to prevent the pump from cavitation damage.
  • R L may be defined to correspond to a cavitation level at which noise and/or vibration may cause damage to the pump.
  • the application based severity level R u will typically be between R L and R T . As such, whenever calculated actual severity level R a is below R L , the pump will be stopped to prevent further damage.
  • the system 1 may store a plurality of historical actual level R a values in memory 34.
  • a standard deviation R STD of these historical levels can be calculated to determine if changes in the historical levels exceed a certain amount R B .
  • This value R B can be used as an indicator that gas bubbles are passing through the pump 2.
  • the value of R B can be user adjustable based on the particular application. In use, if a calculated standard deviation R STD exceeds the predetermined value for R B , the user can choose from a variety of action, increasing pump speed, deceasing pump speed, or stopping the pump.
  • R a and other system information can also be sent out for external use, controls, and/or making other decisions.
  • this information can be used to increase or decrease pump flow rate, or to prompt a user to modify R a or another system parameter.
  • This data can also be used for long term operational and maintenance trending purposes, which can be used to predict and/or optimize maintenance schedules. The data can also be used to identify fluid characteristic changes or process changes that may be causing the pump to cavitate.
  • FIG. 5 shows an embodiment of the system 1 that facilitates remote access of measured and/or calculated parameters.
  • the system 1 includes pump 2 with a plurality of sensors coupled to a controller 28 via a plurality of individual communications links 30.
  • the controller 28 includes a local display 36 and keyboard 38.
  • the display and keyboard are combined into a touch screen format, which can include one or more "hard” keys, as well as one or more "soft” keys.
  • the controller 28 of this embodiment is coupled to a modem 40 which enables a remote computer 42 to access the controller 28.
  • the remote computer 42 may be used to display identical information to that displayed locally at the controller 28.
  • the modem 40 may enable the controller 28 to promulgate e-mail, text messages, and pager signals to alert a user about the condition of the pump 2 being monitored. In some embodiments, one or more aspect of the operation of the pump 2 may also be controlled via the remote computer 42.
  • FIG. 6 illustrates an exemplary logic flow describing a method for monitoring cavitation in a positive displacement pump 2 and for controlling pump operation based on such monitoring.
  • the method begins at step 100.
  • a plurality of samples of discharge pressure are obtained, and an average discharge pressure Pd value is determined.
  • the number of samples, or sampling rate can be determined based on the number teeth (or number of screw ridges) (T) of the pump screw(s) or gears, and an actual operating speed (V) (rpm) of the pump.
  • the sampling rate is selected to be larger than the frequency of pulses caused by the passing teeth (or screw ridges), which in one embodiment is calculated according to the formula: T*V/60 (Hz).
  • a plurality of samples of interstage pressure are obtained, and an average interstage pressure value Pi is determined.
  • a plurality of samples of suction pressure are obtained, and an average suction pressure value Ps is determined.
  • an actual cavitation severity level R a is determined. In one embodiment, R a is determined according to formula (3) or (4).
  • a target cavitation severity level R T is determined. In one embodiment, R T is determined according to formula (2).
  • stored values of an application cavitation severity level R u and a cavitation severity low limit R L are read from memory. In one embodiment, R u and R L are input by a user depending upon a particular application of the pump.
  • control whenever the actual cavitation severity level R a drops below the application based cavitation severity level R u , the system will change the pump speed, and will then determine whether the cavitation condition improves (i.e., whether R a raises above R u ). Often, the pump speed will be reduced in order to improve the pump operation.
  • the system When control is not enabled, the system will simply generate alarms when the actual cavitation severity level R a drops below the application based cavitation severity level R u . If control is not enabled, then at step 180, the sampled and calculated values from steps 110-150 are stored in memory and are sent through communication ports for alarm notification purposes. The method then returns to step 110.
  • step 190 a determination is made as to whether R a is less than R L . If R a is less than R L , then at step 200 the pump 2 is stopped. The method then proceeds to step 180, where the sampled and calculated values from steps 110-150 are stored in memory and are sent through communication ports. The method then returns to step 110. If, however, at step 190 it is determined that R a is not less than R L , then at step 210 a determination is made as to whether R a is less than R u . If R a is less than R u , then at step 220, pump operating speed is decreased.
  • the rate of the speed reduction can be predetermined and/or adjustable by the user, and at the next iteration of the control loop, the system will repeat the evaluation.
  • the value of R a is stored in memory, and a number "N" of most recently stored values of R a are read from memory.
  • the number "N” is determined according to the formula: T*V/60, where "T” is the number of pump screw teeth or ridges, and "V” is the operating speed of the pump in RPM.
  • a standard deviation of the read values of R a is calculated to determine Rstd .
  • a stored value of bubble and gas standard level R B is read from memory.
  • the value of R B is input by a user depending upon a particular application of the pump.
  • a determination is made as to whether R STD is greater than R B . If it is determined that R STD is not greater than R B , then the method proceeds to step 180, where the sampled and calculated values from steps 110-150, and 230-250 are stored in memory and are also sent through communication ports. The method then returns to step 110. If, however, at step 260 it is determined that R STD is not greater than R B , then at step 270 air or gas bubbles are determined to be passing through the pump, and an operational characteristic of the pump is automatically adjusted. The operational characteristic can include changing pump speed or stopping the pump.
  • step 180 the sampled and calculated values from steps 110-150, and 230-250 are stored in memory and are also sent through communication ports.
  • the method then returns to step 110. If, at step 210, it is determined that Ra is not less than R u , then at step 280, pump operating speed is increased. The method then proceeds to step 230 in the manner previously described.
  • Some embodiments of the disclosed device may be implemented, for example, using a storage medium, a computer-readable medium or an article of manufacture which may store an instruction or a set of instructions that, if executed by a machine, may cause the machine to perform a method and/or operations in accordance with embodiments of the disclosure.
  • a machine may include, for example, any suitable processing platform, computing platform, computing device, processing device, computing system, processing system, computer, processor, or the like, and may be implemented using any suitable combination of hardware and/or software.
  • the computer-readable medium or article may include, for example, any suitable type of memory unit, memory device, memory article, memory medium, storage device, storage article, storage medium and/or storage unit, for example, memory (including non-transitory memory), removable or non-removable media, erasable or non-erasable media, writeable or re-writeable media, digital or analog media, hard disk, floppy disk, Compact Disk Read Only Memory (CD-ROM), Compact Disk Recordable (CD-R), Compact Disk Rewriteable (CD-RW), optical disk, magnetic media, magneto-optical media, removable memory cards or disks, various types of Digital Versatile Disk (DVD), a tape, a cassette, or the like.
  • memory including non-transitory memory
  • removable or non-removable media erasable or non-erasable media, writeable or re-writeable media, digital or analog media
  • hard disk floppy disk
  • CD-ROM Compact Disk Read Only Memory
  • CD-R Compact Disk Recordable
  • the instructions may include any suitable type of code, such as source code, compiled code, interpreted code, executable code, static code, dynamic code, encrypted code, and the like, implemented using any suitable high-level, low-level, object-oriented, visual, compiled and/or interpreted programming language.

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

Claims (14)

  1. Système (1) pour la surveillance et la commande d'une pompe volumétrique (2) comprenant :
    une pluralité de capteurs de pression montés sur la pompe volumétrique, la pluralité de capteurs de pression (4, 6, 8) comprenant au moins des premier (4), deuxième (6) et troisième capteurs de pression (8), dans lequel le premier capteur de pression (4) est séparé du deuxième capteur de pression (6) d'une première distance (Li) et le premier capteur de pression (4) est séparé du troisième capteur de pression (6) d'une seconde distance (L) ; et
    un dispositif de commande (28) pour la réception de signaux d'entrée (Ps, Pi, Pd) de la pluralité de capteurs de pression (4, 6, 8), et pour le traitement desdits signaux d'entrée (Ps, Pi, Pd) afin d'obtenir un rapport de sévérité de cavitation, le rapport de sévérité de cavitation comprenant un rapport de la différence entre une pression interétage mesurée de la pompe (2) et une pression d'aspiration mesurée de la pompe (2) et la différence entre une pression de décharge mesurée de la pompe (2) et une pression d'aspiration mesurée de la pompe (2) ;
    le dispositif de commande (28) étant caractérisé en ce qu'il est
    en outre configuré pour ajuster une vitesse opérationnelle de la pompe (2) sur la base d'une comparaison du rapport de sévérité de cavitation avec un niveau de sévérité basé sur l'application prédéfini et un niveau de sévérité de cavitation cible, le niveau de sévérité basé sur l'application étant réglé par un utilisateur et le niveau de sévérité de cavitation cible étant basé sur un rapport entre la première distance (Li) et la seconde distance (L).
  2. Système (1) selon la revendication 1, dans lequel lorsque le rapport de sévérité de cavitation est dans une plage prédéterminée du niveau de sévérité basé sur l'application, une vitesse opérationnelle actuelle de la pompe (2) est maintenue.
  3. Système (1) selon la revendication 1, dans lequel lorsque le rapport de sévérité de cavitation est supérieur au niveau de sévérité basé sur l'application, une vitesse de la pompe (2) est augmentée jusqu'à ce que le rapport de sévérité de cavitation soit dans une plage prédéterminée du niveau de sévérité basé sur l'application.
  4. Système (1) selon la revendication 1, dans lequel lorsque le rapport de sévérité de cavitation est inférieur au niveau de sévérité basé sur l'application, une vitesse de la pompe (2) est diminuée jusqu'à ce que le rapport de sévérité de cavitation soit dans une plage prédéterminée du niveau de sévérité basé sur l'application.
  5. Système (1) selon la revendication 1, dans lequel lorsque le rapport de sévérité de cavitation est inférieur à une limite de niveau de sévérité basé sur l'application, la pompe est arrêtée.
  6. Système (1) selon la revendication 1, dans lequel le rapport de sévérité de cavitation Ra est obtenu selon la formule : R a = P i − P s P d − P s
    Figure imgb0007
     où Pi est la pression interétage mesurée de la pompe, Ps est la pression d'aspiration mesurée de la pompe, et Pd est la pression de décharge mesurée de la pompe.
  7. Système (1) selon la revendication 1, le dispositif de commande (28) étant en outre configuré pour stocker une pluralité de valeurs discrètes de rapport de sévérité de cavitation dans le temps, et pour obtenir une déviation standard de la pluralité de valeurs discrètes pour déterminer si un changement dans la pluralité de valeurs discrètes excède une limite prédéterminée.
  8. Système (1) selon la revendication 7, dans lequel lorsque le changement dans la pluralité de valeurs discrètes excède la limite prédéterminée, le dispositif de commande (28) est configuré pour fournir une indication à un utilisateur sur la présence de bulles de gaz dans la cavité de pompe.
  9. Système (1) selon la revendication 8, dans lequel en réponse à l'indication, le dispositif de commande (28) est configuré pour recevoir une entrée utilisateur afin de changer une condition opérationnelle de la pompe (2).
  10. Procédé de surveillance et de commande d'une pompe volumétrique (2), comprenant :
    l'obtention d'une pluralité de signaux (Ps, Pi, Pd) représentatifs de pressions à une pluralité d'emplacements dans la pompe volumétrique (2) ;
    le traitement de la pluralité de signaux (Ps, Pi, Pd) pour obtenir un rapport de sévérité de cavitation, le rapport de sévérité de cavitation comprenant un rapport de la différence entre une pression interétage mesurée de la pompe (2) et une pression d'aspiration mesurée de la pompe (2) et la différence entre une pression de décharge mesurée de la pompe (2) et une pression d'aspiration mesurée de la pompe (2) ; et étant caractérisé en ce que
    l'ajustement d'une vitesse opérationnelle de la pompe volumétrique (2) est basé sur une comparaison du rapport de sévérité de cavitation à un niveau de sévérité basé sur l'application et un niveau de sévérité de cavitation cible, le niveau de sévérité basé sur l'application étant réglé par un utilisateur et le niveau de sévérité de cavitation cible étant basé sur un rapport de distances entre la pluralité d'emplacements.
  11. Procédé selon la revendication 10, comprenant en outre le maintien d'une vitesse opérationnelle actuelle de la pompe (2) lorsque le rapport de sévérité de cavitation est dans une plage prédéterminée du niveau de sévérité basé sur l'application.
  12. Procédé selon la revendication 10, dans lequel lorsque le rapport de sévérité de cavitation est supérieur au niveau de sévérité basé sur l'application, le procédé comprend l'augmentation d'une vitesse de la pompe (2) jusqu'à ce que le rapport de sévérité de cavitation soit dans une plage prédéterminée du niveau de sévérité basé sur l'application.
  13. Procédé selon la revendication 10, dans lequel lorsque le rapport de sévérité de cavitation est inférieur au niveau de sévérité basé sur l'application, le procédé comprend la diminution d'une vitesse de la pompe (2) jusqu'à ce que le rapport de sévérité de cavitation soit dans une plage prédéterminée du niveau de sévérité basé sur l'application.
  14. Procédé selon la revendication 10, dans lequel lorsque le rapport de sévérité de cavitation est inférieur à une limite de sévérité basée sur l'application, le procédé comprend l'arrêt de la pompe (2).
EP12872798.9A 2012-03-28 2012-03-28 Système et procédé pour surveiller et commander la cavitation dans des pompes volumétriques Active EP2831418B1 (fr)

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PCT/US2012/030893 WO2013147761A2 (fr) 2012-03-28 2012-03-28 Système et procédé pour surveiller et commander la cavitation dans des pompes volumétriques

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EP2831418A2 EP2831418A2 (fr) 2015-02-04
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JP (1) JP5999739B2 (fr)
CN (1) CN104321529B (fr)
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TWI624596B (zh) * 2017-03-15 2018-05-21 亞台富士精機股份有限公司 可被遠端監控的幫浦機台及幫浦監控系統
JP6909119B2 (ja) * 2017-09-14 2021-07-28 Ｋｙｂ株式会社 ベーンポンプ
JP6947152B2 (ja) * 2018-12-07 2021-10-13 横河電機株式会社 検知装置、検知方法、及び検知プログラム
DE102019128602B3 (de) * 2019-10-23 2021-02-11 Leistritz Pumpen Gmbh Schraubenspindelpumpe

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016898A (en) * 1975-05-27 1977-04-12 Sperry Rand Corporation Means for suppressing cavitation in a high pressure relief valve
FR2535408A1 (fr) * 1982-10-28 1984-05-04 Snecma Dispositif et procede de detection de la garde a la cavitation d'une pompe volumetrique
JP3033342B2 (ja) * 1992-05-22 2000-04-17 横河電機株式会社 キャビテーション現象検出装置
US5601414A (en) * 1995-09-25 1997-02-11 Imo Industries, Inc. Interstage liquid/gas phase detector
US6954713B2 (en) * 2001-03-01 2005-10-11 Fisher-Rosemount Systems, Inc. Cavitation detection in a process plant
US6663349B1 (en) * 2001-03-02 2003-12-16 Reliance Electric Technologies, Llc System and method for controlling pump cavitation and blockage
US6655922B1 (en) * 2001-08-10 2003-12-02 Rockwell Automation Technologies, Inc. System and method for detecting and diagnosing pump cavitation
CN200940608Y (zh) * 2006-08-28 2007-08-29 上海阿波罗机械制造有限公司 智能保护监控卧式双吸泵
US20090053072A1 (en) 2007-08-21 2009-02-26 Justin Borgstadt Integrated "One Pump" Control of Pumping Equipment
ATE522710T1 (de) * 2007-11-30 2011-09-15 Perkins Engines Co Ltd Kühlpumpenkavitationsschutzsystem

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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WO2013147761A3 (fr) 2014-05-01
ES2827448T3 (es) 2021-05-21
CN104321529A (zh) 2015-01-28
CN104321529B (zh) 2016-12-07
WO2013147761A2 (fr) 2013-10-03
EP2831418A4 (fr) 2015-12-30
EP2831418A2 (fr) 2015-02-04
JP5999739B2 (ja) 2016-09-28
JP2015520819A (ja) 2015-07-23

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