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WO2006019352A1 - Procede et dispositif de fonctionnement d'une station de pompage - Google Patents

Procede et dispositif de fonctionnement d'une station de pompage Download PDF

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Publication number
WO2006019352A1
WO2006019352A1 PCT/SE2005/001212 SE2005001212W WO2006019352A1 WO 2006019352 A1 WO2006019352 A1 WO 2006019352A1 SE 2005001212 W SE2005001212 W SE 2005001212W WO 2006019352 A1 WO2006019352 A1 WO 2006019352A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
flow
level
measure
behaviour
Prior art date
Application number
PCT/SE2005/001212
Other languages
English (en)
Inventor
Gert Hallgren
Original Assignee
Itt Manufacturing Enterprises Inc.
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 Itt Manufacturing Enterprises Inc. filed Critical Itt Manufacturing Enterprises Inc.
Publication of WO2006019352A1 publication Critical patent/WO2006019352A1/fr

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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
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • 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
    • 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
    • F04D15/02—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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D29/00—Simultaneous control of electric and non-electric variables
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0676—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources
    • G05D7/0682—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources using a plurality of flow sources

Definitions

  • the present invention relates to control systems and methods for pumping sewage or waste water in a pump station
  • One or more pumps are used to compensate for inflows and disturbances caused by events external to the station or system, and these pumps are selectively activated or ran and controlled to maintain the state of the system within it's predetermined range.
  • sewage water is led into a basin from, for example, sewage systems, roadway drains, etc.
  • One or more pumps are arranged to pump water from the basin in order to maintain the level within predetermined limits.
  • the pumps are arranged in a parallel orientation.
  • Sensors are arranged to measure operating parameters such as the pump power and /or the water level.
  • the sensors and pump motors are connected to a control system of the pump station, which includes means for starting and stopping the motors in response to operating conditions.
  • the control system comprises alarms, displays, logic circuitry, and disk drives and/or semiconductor memory for storing data and programs.
  • the system can include communication means for communicating by means of, for example, radio or telemetry, information, such as parameters that characterize operating conditions of the station, with a monitoring system.
  • information such as parameters that characterize operating conditions of the station
  • the information may comprise data or calculated parameters that characterize the operating conditions of the pump station, alarms and desired changes of the program controlling the station or the system.
  • control systems and methods used in pumping stations are commonly focused on maintaining desired operating conditions reliably, but without specifically addressing operating efficiency.
  • the pump speed has a significant impact on the overall energy consumption of the system. Therefore, a number of methods for selecting the pump speed or pumps to be activated have been developed.
  • pump speed is generally regulated so as to maintain a specified level (with a level span to enable regulation), which is an non-effective running pattern of a pump with respect to the energy consumption.
  • one object of the present invention is to provide a method and a system for operating a pump station in an efficient way with respect to energy consumption.
  • pump speed is defined as the numbers of revolutions per time unit of the pump.
  • a method for operating at least one pump of a pump station having at least one variable- speed pump comprises the steps of: sensing a plurality of operating parameters of the pump station; determining a pump behaviour of the pump by utilizing the operating parameters; and operating the pump according a running pattern selected on basis of the calculated pump behaviour and/ or the sensed operating parameters.
  • a system for operating at least one pump of a pump station having at least one variable- speed pump comprising sensing means arranged to sense a plurality of operating parameters of the pump station/ system; processing means in communication with said sensing means, which processing means is arranged to determine a pump behaviour of the pump by utilizing said operating parameters; and control means in communication with the processing means, which control means is arranged to operate the pump according to a running pattern selected on basis of the calculated flow and/ or power behaviour.
  • a computer program product loadable into a memory of a digital computer device, including software code portions for performing the method of according to the first aspect of the present invention when said computer program product is run on said computer device.
  • the present invention is based on the insight of utilizing operation parameters present within a system for operating a pump station including at least one variable-speed pump in an adaptive manner in order to improve or optimize the sewage handling and/or the operation of the pump or the pumps.
  • a running pattern can be selected on basis of the calculated flow and power behaviour that entails a significant improvement regarding the energy consumption of the pump or the pumps, allows for a compensating of flow peaks, and provides for an efficient anti-clogging handling of the pump or the pumps or the pump configuration.
  • a measure of the flow of the pump, Q(n), is determined as a function of the speed of the pump, where Q is a measure of the flow and n the pump speed, i.e. the number of revolutions per time unit, and a measure of the power of the pump, P(n), is determined as a function of the speed of the pump, where P is a measure of the power and n the number of revolutions per time unit, by utilizing the sensed operating parameters.
  • a running pattern of the pump or the pumps can be selected that uses the sewage water volume as a buffer, thereby damping inflow variations.
  • abnormal deviations in the operation of the pump or the pumps with regard to power behaviour or flow behaviour can be used in order to detect the build up of clogging at an early stage.
  • an automatic cleaning procedure is initiated at detection of abnormal deviations in the operation of the pump or the pumps with regard to power behaviour or flow behaviour in order to remove a clogging item.
  • the methods according to the present invention are suitable to realize or implement as a computer program or a computer readable medium, preferably within the contents of a control means or a processing means of a pump station or system.
  • Fig. 1 schematically shows a system at a pumping station in which the method according to the present invention may be implemented
  • Fig. 2 schematically shows a sewage water basin at a pumping station
  • Fig. 3 shows a flow diagram of the general principles of the method according to the present invention
  • Fig. 4 shows a flow diagram of an embodiment of a sequence for deterrnining the flow and power equation of a pump in accordance with the present invention
  • Fig. 5a shows a normalized diagram of the specific energy, the power behaviour, and the flow behaviour of a pump of a pump station as a function of the relative speed of the pump;
  • Fig. 5b shows a normalized diagram of the specific energy, the power behaviour, and the flow behaviour of a pump of another pump station with a higher geodetic head as a function of the relative speed of the pump;
  • Fig. 6 shows a flow diagram of an embodiment of a detection function for detecting clogging of the pump
  • Fig. 7 shows a flow diagram of another embodiment of a detection function for detecting clogging of the pump.
  • the system 10 of Fig. 1 includes at least one variable-speed pump 12.
  • the pump 12 is a vailable frequency drive controlled pump (VFD pump), for pumping a liquid, for example, sewage water at a pumping station.
  • VFD pump vailable frequency drive controlled pump
  • the system to be discussed herein is directed to a lift station for pumping sewage water or waste water from a wet well or a basin, but is not intended to be limited thereto, and indeed the principles herein are applicable to any fluid pumping system.
  • the system is also adaptable for use with more than one pump.
  • the system 10 comprises control means 14, which controls or drives the pump 12 to, for example, increase or decrease the speed in order to pump a larger or a smaller amount of water, respectively.
  • the control means is a variable frequency drive unit.
  • the control means 14 is, in turn, controlled by processing means 16, which includes storage means 18.
  • the storage means 18 may include a random access memory (RAM) and/ or a non- volatile memory such as read-only memory (ROM).
  • RAM random access memory
  • ROM read-only memory
  • storage means may include various types of physical devices for temporary and/ or persistent storage of data which includes solid state, magnetic, optical and combination devices.
  • the storage means may be implemented using one or more physical devices such as DRAM, PROMS, EPROMS, EEPROMS, flash memory, and the like.
  • the system includes a number of sensing means 30, 32, 34, and 36 arranged for sensing different operating parameters of the pump or pumps 12 and/or the pump station 10.
  • the system includes level sensing means 30 for sensing the level of liquid in the well or basin (see Fig. 2), means for sensing the speed of the pump 32, power sensing means 34 for sensing the power input of the pump.
  • the system may also include inflow and/ or outflow sensing means 36 is arranged to sense the inflow of liquid to the basin 40.
  • inflow and/ or outflow sensing means 36 is arranged to sense the inflow of liquid to the basin 40.
  • means for sensing the speed of the pump 32 and current sensing means 34 can either be integrated in the pump 12 or can be external sensors connected to the puinp.
  • the processing means 16 is arranged in communication with the sensing means 30, 32, 34, and optionally 36, either directly or via the control means 14, in order to obtain input signals from each sensing means 30, 32, 34, and 36.
  • the processing means 16 may be arranged in communication with an operator unit 22 including a keyboard 24, which allows the operator to input, for example, control commands, and a display or screen 26 for presenting information related operation of the pump or the pumps, for example, time history of the operating parameters, or status information of the pump or the pumps. Accordingly, the operator can monitor the operation of the pump of the pumps as well as different operating parameters associated to the operation thereof via the display 26.
  • the display is a touch sensitive screen and in this case a number of soft-keys can be arranged on the screen in order to present different commands at different presented interfaces on the display 26.
  • the operator unit may comprise storage means (not shown), which, in turn, may include a random access memory (RAM) and/ or a non-volatile memory such as read-only memory (ROM).
  • storage means may include various types of physical devices for temporary and/ or persistent storage of data which includes solid state, magnetic, optical and combination devices.
  • the storage means may be implemented using one or more physical devices such as DRAM, PROMS, EPROMS, EEPROMS, flash memory, and the like.
  • a sewage water basin at a pumping station in which a system, such as the system described above can be employed, in which the method according to the present invention may be implemented will be described.
  • This may, for example, be a VDF controlled sewage system in a municipal lift station for pumping waste water from a wet well.
  • the pump 12 or the pumps is (are) arranged at the well or basing 40 to pump or lift the sewage water 41 from the basin 40 to, for example, a subsequent basin or well via a pump inlet pipe 43 and a pump outlet pipe 44. Sewage water is fed into the basin 40 via an inlet 42. Often, the inflow of sewage water have a predictable daily, weekly, and seasonal variation, but it is not however always the case as the inflow may be affected by, for example, weather conditions.
  • Level sensing means 30 is arranged to sense the level of the sewage water 41 in the basin 40, which level sensing means also is connected to the processing means 16.
  • inflow and/ or outflow sensing means 36 may also be connected to the processing means 16.
  • a plurality of operating parameters of the pump or the pumps and the pump station are constantly monitored and sensed by means of a number of sensing means at step 60.
  • sensing means include i.a. level sensing means 30 for sensing the level of liquid in the well or basin, means for sensing the speed of the pump 32, current sensing means 34 for sensing the current input of the pump, and, optionally, inflow and/ or outflow sensing means 36 for sensing the inflow of liquid to the basin.
  • a number of operating parameters associated with the operation of a certain pump or indicating the effect of the operation of the pump on the pump station, for example, on the level of the sewage water 41 in the basin 40 are obtained, in particular, the level of the liquid in the basin; the speed of the pump; and the current consumption of the pump at this certain speed.
  • a set of operating parameters is obtained for each pump and each allowed pump configuration.
  • the sensed and/ or monitored parameters can be stored directly in a storage means of, for example, the processing means 16 for subsequent processing or they can be presented for an operator on the display 26 of the operator unit 22.
  • the obtained operating parameters are processed in the processing means 16 in order to determine a flow behaviour Q(n), as a function of the speed of said pump, where Q is the flow and n is the speed of the pump or, in case there are more than one pump, each pump, and a power behaviour P(n), as a function of the speed of said pump, where P is the power and n the speed of the pump or, in case there are more than one pump, each pump, which will be described in detail below.
  • the flow behaviour and power behaviour of the pump or of each pump is stored.
  • the operating parameter is stored and they can either be stored in this step or prior to the processing of the parameters.
  • the pump or, in case the are more than one pump each pump is operated according a running pattern selected on basis of said calculated pump behaviour and/ or the sensed operating parameters, which will be described in more detail below.
  • This may include: - optimizing due to clog free running of the pump, i.e. pump a given inflow of sewage water while minimizing disturbances by detecting, at an early stage, detecting abnormal deviations indicating clogging of the pump and perform automatic cleaning of clogging items; and/ or - optimizing the operation of the pump due to minimized flow variation,
  • the running pattern may include - optimizing due to clog free running of the pump, i.e. pump a given inflow of sewage water while minimizing disturbances by detecting, at an early stage, detecting abnormal deviations indicating clogging of the pump and perform automatic cleaning of clogging items; and/or optimizing the operation of the pump due to specific energy, i.e. pump at given inflow of sewage water at lowest possible energy consumption of the pump or in other words select a running pattern that creates low specific energy.
  • optimizing with respect to clog free running can be combined with either optimizing the operation of the pump due to specific energy or optimizing the operation of the pump due to minimized flow variations.
  • a maximum or start level of the sewage water in the basin is set or determined, below which level regulation is carried out. This level should be set high up in the basin in order to provide as low geodetic height as possible. Preferably, a lowest level is also set or determined.
  • the level of sewage water is allowed to reach the predetermined maximum level and the pump is ran at a first speed of a set of different speeds so that the level of sewage water sinks.
  • the first speed is the maximum speed.
  • the operation of the pump is interrupted at step 74.
  • a measure of the input power of the pump is measured, Pi n .
  • the level of the sewage water is allowed to rise (to the predetermined maximum level or during a reasonable long period of time) so that a stable measure of the inflow to the basin, Qj n , has been obtained for the first speed of the set of different speeds.
  • the outflow of the basin for the first speeed of the set of different speeds is determined according to:
  • step 80 it is checked whether the outflow;, Qout, has been determined for all different speeds of the set of different speeds. If no, the above mentioned steps 70 to 78 are repeated for each remaining speed of the set.
  • the set may comprise the maximum speed, 90 % of the maximum speed, and 80 % the maximum speed. It should however be noted that the pumping action of the pump must have an observable influence of the level of the sewage water at each speed.
  • a flow equation and a power equation for the pump are determined at step 82 according to the following:
  • a measure of the specific energy for the pump is determined according to the following:
  • a window of different speeds of the pump is calculated by identifying the minimum value of the specific energy E(n) determined by means of equation (4), i.e. a pattern of speed versus level as well as start and stop levels is determined.
  • E(n) the specific energy determined by means of equation (4)
  • a pattern of speed versus level as well as start and stop levels is determined.
  • Ti time intervals
  • a weighted floating mean value is employed.
  • Figs. 5a and 5b exemplifying diagrams illustrating the specific energy for two different pumps of a pump station as a function of the relative speed of the pumps will be described.
  • the curves shown are normalized and the specific energy is indicated with unbroken lines, the power with dashed lines, and the flow with dotted lines.
  • Fig. 5a the specific energy, the power, and the flow of a pump of a first pump of a pump station is shown, and the optimal speed, as discussed above, is where the specific energy has a miriimum value, indicated by reference 90. From this an optimal running pattern can be obtained as will be shown hereinafter.
  • Fig. 5a exemplifying diagrams illustrating the specific energy for two different pumps of a pump station as a function of the relative speed of the pumps will be described.
  • the curves shown are normalized and the specific energy is indicated with unbroken lines, the power with dashed lines, and the flow with dotted lines.
  • Fig. 5a the specific energy, the power
  • the specific energy as a function of the numbers of revolutions or the relative speed of a second pump is illustrated. As can be seen, there is no minimum value of the specific energy and a lower speed entails a higher specific energy. In this case, it is more efficient to operate the pump according to an on-off regulation.
  • the pumping of the sewage water is optimized due to the specific energy by means of the calculated or determined equations (2)-(4).
  • the start level is set to the maximum level and the stop level to a level where a highest possible outflow and no inflow gives an acceptable running time, for example about 2 minutes, or the minimum level, whichever event that occurs first.
  • VFD regulation Vehicle Frequency Drive
  • a minimur ⁇ value of the speed and a start value of the speed are set.
  • the minimum value of the speed may be set to the optimal speed as determined above since the specific energy curve shows a sharper slope towards lower speed than towards higher.
  • the start value of the speed may be a value between the maximum and optimal speed.
  • the sewage water should be pumped so that a major or at least large amount of water is pumped as efficient as possible. That is, a major part of the sewage water volume should be pumped at the speed in the window of speed as discussed above with reference to Fig. 5a
  • the pumping of the sewage water is optimized due to an even flow of sewage water by means of the calculated or determined equations (2)-(4).
  • the start level is set to the maximum level and the stop level to a level where a highest possible outflow and no inflow gives an acceptable running time, for example about 2 minutes, or the minimum level, whichever event that occurs first.
  • the volume of sewage water (and possible parts of the pipe system) may be used a buffer, which provides a larger difference between high and low levels.
  • the minimum speed is lower than the optimal speed, for example, a number of revolutions per time unit, nmin, where
  • n ma ⁇ is the maximum speed of the pump, i.e. the maximum number of revolutions per time unit. Further, nmin is modified with a factor according to the following:
  • nmm nmin(l+0. l*((n m a ⁇ -nopt)/n max )) (6)
  • nmin, n op t are the minimum number of revolutions per time unit and the optimal number of revolutions per time unit (i.e. the speed at the minimum specific energy), respectively.
  • the start level of the sewage water is about 10 percent above the minimum level (at minimum speed).
  • the interval can be divided up and equations for one pump at maximum speed and one VDF regulated pump have to be determined.
  • the single pump value of the nmin can be utilized for several pumps and nn ⁇ in and n B ax levels in sequence with a small overlap with a start level of about 10 percent above the maximum level of the pump operated at n max .
  • a number of pumps can be VFD regulated in parallel, which in principle similar to operating one large pump. It should be noted that the regulation cannot be performed using a nearly fixed level of sewage water in the basin because the sewage water is not utilized as a buffer.
  • the calculated or determined equation (3) is used in a detection function for detecting clogging of the pump, which function now will be described with reference to Fig. 6.
  • the measure of input power i.e. produced by means of equation (3), is used as indicating parameter according to the following:
  • x is set to a value greater than 1 and more preferably greater than the natural variations but smaller than what is defined by the engine protection, for example, to a value of 1.05-1.9, and more preferably to a value of 1.1-1.5.
  • the actual measured input power of the pump is monitored using the current sensing means 34, which, for example, can be made on a constant basis or at defined intervals, and the signal indicating the input power of the pump is communicated to the processing means 16.
  • the processing means 16 it is checked whether the measured input power of the pump, P ac tuai, exceeds the known relation between input power and speed, P(n), times the predetermined margin factor, x, i.e. whether the relation (7) is met or not. If no, the system returns to normal operation at step 103. On the other hand, if yes, an automatic cleaning procedure of the pump is initiated at step 104. Thereafter, at step 106, it is again checked whether the relation (7) is met.
  • step 108 it is checked whether too many attempts to clean the pump has been performed. This is a predetermined number of attempts, which may be a pre-programmed number or a number selected by the operator. If it is determined that the predetermined number of attempts not have been exceeded, the system returns to step 104 and the automatic cleaning procedure is maintained. If yes, the system proceeds to step 112 and an alarm function is initiated by the processing means 16. The operator can be notified of this event by means of an alarm indication or message on the display 26 of the operator unit 22. According to alternative embodiment, a timer times out after a predetermined period of time of running the automatic cleaning procedure and the operator is notified of the event by means of, for example, a message on the display 26.
  • the operator is informed of that the automatic cleaning procedure not has had the desired effect, i.e. the automatic cleaning was not efficient enough for removing the clogging of the pump.
  • the operator can then take further measures for removing the clogging, for example, stop the operation of the pump and perform a manual cleaning of the pump.
  • the operator is notified by means of an alarm function, for example, a light twinkling red.
  • the system returns to normal operation at step 103.
  • step 106 if Pactuai ⁇ x*P(n), the system proceeds to step 110 and the automatic cleaning procedure is stopped. Finally, at step 103, the system returns to normal operation.
  • the calculated or determined equation (2) is used in a detection function for detecting clogging of the pump, which detection function will be described with reference to Fig. 7.
  • the flow equation, i.e. equation (2) is used as indicating parameter in accordance with the following:
  • y is a predetermined margin factor between 1.5 and 2
  • Q(n) is equation (2) determined above.
  • y is set to a value greater than 1 and more preferably set to a value greater than the natural variations, for example, to a value of 1.3-2.2, and more preferably to a value of 1.5-2.
  • the detection procedure is initiated and the level of the sewage water 41 in the basin 43 is pumped down from an initial level to the predetermined minimum level, which minimum level may differ as discussed above. This may be performed at appropriate intervals, for example, after a predetermined number of operational hours. In certain cases, the regulation scheme may be such that this occurs without this minimum level is reached anyway.
  • step 122 the change of level is measured (as a measure of the net flow) and communicated to the processing means 16.
  • pump is stopped and the inflow is measured using the change of level in the same way as described above with reference to Fig. 3 and communicated to the processing means 16.
  • step 126 the actual flow Qactuai is then determined as the sum of the measured difference between the measured net flow and inflow in the processing means 16.
  • step 128 it is checked whether the determined actual flow, Qactuai, is lower than the known relation between flow and speed, Q(n), divided with the predetermined margin factor y, i.e. whether the relation (8) is met or not. If no, the system returns to normal operation at step 129.
  • step 132 an automatic cleaning procedure of the pump is initiated at step 132. Thereafter, at step 134, it is again checked whether the relation (8) is met. If yes, the system proceeds to step 138 where it is checked whether too may attempts to clean the pump has been performed. This is a predetermined number of attempts, which may be a pre-programmed number or a number selected by the operator. If it is determined that the predetermined number of attempts not have been exceeded, the system returns to step 132 and the automatic cleaning procedure is maintained. On the other hand, if yes, the system proceeds to step 140 and an alarm function is initiated by the processing means 16. The operator can be notified of this event by means of an alarm indication or message on the display 26 of the operator unit 22.
  • a timer times out after a predetermined period of time of running the automatic cleaning procedure and the operator is notified of the event by means of, for example, a message on the display 26.
  • the operator is informed of that the automatic cleaning procedure not has had the desired effect, i.e. the automatic cleaning was not efficient enough for removing the clogging of the pump.
  • the operator can then take further measures for removing the clogging, for example, stop the operation of the pump and perform a manual cleaning of the pump.
  • the operator is notified by means of an alarm function, for example, a light twinkling red. Subsequently, the system returns to normal operation at step 129.
  • step 134 the system proceeds to step 136 and the automatic cleaning procedure is stopped and the time flag is reset, i.e. the predetermined period of time start again. Finally, at step 129, the system returns to normal operation.

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

Abstract

L'invention porte sur des systèmes de contrôle et des procédés permettant d'améliorer la manipulation des eaux usées dans une station de pompage équipée d'au moins une pompe à vitesse variable, et d'augmenter l'efficacité totale de la pompe ou des pompes de la station. Ce procédé consiste à détecter une pluralité de paramètres de fonctionnement de la station de pompage ; à déterminer un comportement de pompe de la pompe au moyen des paramètres de fonctionnement ; et à faire fonctionner la pompe selon un modèle de fonctionnement choisi en fonction du modèle de pompe calculé et/ou des paramètres de fonctionnement détectés. L'invention porte aussi sur un système de fonctionnement de la pompe en fonction du modèle de fonctionnement. Elle se rapporte aussi à un programme informatique pouvant être chargé dans une mémoire d'un ordinateur numérique comprenant des parties de code logiciel afin de mettre en oeuvre ledit procédé.
PCT/SE2005/001212 2004-08-19 2005-08-16 Procede et dispositif de fonctionnement d'une station de pompage WO2006019352A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0402043-4 2004-08-19
SE0402043A SE0402043L (sv) 2004-08-19 2004-08-19 Metod och anordning för att driva av en pumpstation

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WO2006019352A1 true WO2006019352A1 (fr) 2006-02-23

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2008229836A1 (en) * 2008-01-21 2009-08-06 Multitrode Pty Ltd Pump Control Method
WO2009059793A3 (fr) * 2007-11-09 2009-10-01 Wilo Se Dispositif et procédé de régulation d'un flux de liquide
CN103047122A (zh) * 2012-12-27 2013-04-17 江苏科技大学 一种污水泵站水泵控制装置及其控制方法
GB2512084A (en) * 2013-03-19 2014-09-24 Control Tech Ltd Pump control
EP2796724A1 (fr) * 2013-04-24 2014-10-29 Wilo Se Fonctionnement optimisé d'une pompe à vitesse variable dans une station de pompage des eaux usées
WO2014181237A1 (fr) * 2013-05-07 2014-11-13 Xylem Ip Management S.À R.L. Procédé pour commander une partie d'une station de pompage
CN104712539A (zh) * 2013-12-16 2015-06-17 施耐德东芝换流器欧洲公司 节省液泵装备的电能消耗的控制过程
CN106121983A (zh) * 2016-07-20 2016-11-16 常州液压成套设备厂有限公司 集成式泵站
CN106651640A (zh) * 2016-10-13 2017-05-10 国网河南省电力公司电力科学研究院 一种基于火电厂给水泵运行特性的节能评价方法
CN110366805A (zh) * 2017-02-27 2019-10-22 赛莱默欧洲有限公司 用于控制连接到泵网络的泵的方法
EP2088401B1 (fr) * 2008-02-08 2020-06-03 Multitrode Pty Ltd. Procédé pour déterminer le débit d'une pompe
EP3701152B1 (fr) 2017-10-25 2024-09-25 Suez International Procédé et dispositif de maintien en condition opérationnelle d'un système de pompage

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US4370098A (en) * 1980-10-20 1983-01-25 Esco Manufacturing Company Method and apparatus for monitoring and controlling on line dynamic operating conditions
US4843575A (en) * 1982-10-21 1989-06-27 Crane Harold E Interactive dynamic real-time management system
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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009059793A3 (fr) * 2007-11-09 2009-10-01 Wilo Se Dispositif et procédé de régulation d'un flux de liquide
US20100268389A1 (en) * 2007-11-09 2010-10-21 Wilo Se System and method for regulating a flow of liquid
AU2008229836B2 (en) * 2008-01-21 2009-10-08 Multitrode Pty Ltd Pump Control Method
AU2008229836A1 (en) * 2008-01-21 2009-08-06 Multitrode Pty Ltd Pump Control Method
EP2088401B1 (fr) * 2008-02-08 2020-06-03 Multitrode Pty Ltd. Procédé pour déterminer le débit d'une pompe
CN103047122A (zh) * 2012-12-27 2013-04-17 江苏科技大学 一种污水泵站水泵控制装置及其控制方法
GB2512084A (en) * 2013-03-19 2014-09-24 Control Tech Ltd Pump control
EP2796724A1 (fr) * 2013-04-24 2014-10-29 Wilo Se Fonctionnement optimisé d'une pompe à vitesse variable dans une station de pompage des eaux usées
WO2014181237A1 (fr) * 2013-05-07 2014-11-13 Xylem Ip Management S.À R.L. Procédé pour commander une partie d'une station de pompage
CN104712539A (zh) * 2013-12-16 2015-06-17 施耐德东芝换流器欧洲公司 节省液泵装备的电能消耗的控制过程
FR3014961A1 (fr) * 2013-12-16 2015-06-19 Schneider Toshiba Inverter Procede de commande pour minimiser la consommation d'energie electrique d'un equipement de pompage
JP2015121218A (ja) * 2013-12-16 2015-07-02 シュネーデル、トウシバ、インベーター、ヨーロッパ、ソシエテ、パル、アクション、セプリフエＳｃｈｎｅｉｄｅｒ Ｔｏｓｈｉｂａ Ｉｎｖｅｒｔｅｒ Ｅｕｒｏｐｅ Ｓａｓ ポンプ装置の消費電気エネルギを低減する制御プロセス
EP2884110A1 (fr) * 2013-12-16 2015-06-17 Schneider Toshiba Inverter Europe SAS Procédé de commande pour minimiser la consommation d'énergie électrique d'un équipement de pompage
CN106121983A (zh) * 2016-07-20 2016-11-16 常州液压成套设备厂有限公司 集成式泵站
CN106651640A (zh) * 2016-10-13 2017-05-10 国网河南省电力公司电力科学研究院 一种基于火电厂给水泵运行特性的节能评价方法
CN106651640B (zh) * 2016-10-13 2020-06-02 国网河南省电力公司电力科学研究院 一种基于火电厂给水泵运行特性的节能评价方法
CN110366805A (zh) * 2017-02-27 2019-10-22 赛莱默欧洲有限公司 用于控制连接到泵网络的泵的方法
EP3701152B1 (fr) 2017-10-25 2024-09-25 Suez International Procédé et dispositif de maintien en condition opérationnelle d'un système de pompage

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