EP3156651A1 - Dispositif d'augmentation de pression - Google Patents

Dispositif d'augmentation de pression Download PDF

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Publication number
EP3156651A1
EP3156651A1 EP15190110.5A EP15190110A EP3156651A1 EP 3156651 A1 EP3156651 A1 EP 3156651A1 EP 15190110 A EP15190110 A EP 15190110A EP 3156651 A1 EP3156651 A1 EP 3156651A1
Authority
EP
European Patent Office
Prior art keywords
pressure
control device
booster pump
increasing device
increasing
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
EP15190110.5A
Other languages
German (de)
English (en)
Other versions
EP3156651B1 (fr
Inventor
Torben Thorsager Dissing
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grundfos Management AS
Original Assignee
Grundfos Management AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grundfos Management AS filed Critical Grundfos Management AS
Priority to EP15190110.5A priority Critical patent/EP3156651B1/fr
Priority to US15/293,708 priority patent/US11326591B2/en
Priority to RU2016140465A priority patent/RU2658719C2/ru
Priority to CN201610902881.5A priority patent/CN106869249B/zh
Publication of EP3156651A1 publication Critical patent/EP3156651A1/fr
Application granted granted Critical
Publication of EP3156651B1 publication Critical patent/EP3156651B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/09—Component parts or accessories
    • 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
    • F04B49/02—Stopping, starting, unloading or idling control
    • 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
    • F04D15/0027—Varying behaviour or the very pump
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B5/00—Use of pumping plants or installations; Layouts thereof
    • E03B5/02—Use of pumping plants or installations; Layouts thereof arranged in buildings
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/04—Domestic or like local pipe systems
    • 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
    • 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
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/04—Pressure in the outlet chamber
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/05—Pressure after the pump outlet
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/06—Pressure in a (hydraulic) circuit

Definitions

  • the invention relates to a pressure-increasing device for increasing the pressure of a liquid flowing through a conduit.
  • Such pressure booster devices are used, for example, in the drinking water supply of buildings, when the pipeline pressure in a drinking water supply, for example, is not sufficiently high to convey the drinking water to the uppermost floors of a building.
  • Such pressure increasing means comprise one or more booster pumps which can be connected in parallel or in series and which are turned on when the pressure on the output side of the pressure booster pumps falls below a predetermined limit. Accordingly, the booster pumps are turned off when a desired target pressure is reached.
  • the pressure increasing device serves to increase the pressure of a liquid flowing through a conduit, for example drinking water in a drinking water conduit.
  • the pressure-increasing device has at least one booster pump. However, it is also possible to connect several pressure-increasing pumps in parallel and / or in series. If the term pressure booster pump is used below, this expressly also includes such arrangements of several pressure booster pumps.
  • the pressure increasing means further comprises a control means which controls the booster pump. For this purpose, there is at least one pressure sensor arranged on or on the output side of the booster pump, which is connected to the control device in such a way that pressure measured values detected by the pressure sensor are transmitted to the control device.
  • the control device is designed such that it controls the pressure-increasing pump in a start-stop mode at least in one operating region. That means the pump will be reached when reaching an upper one Pressure limit switched off and turned on when reaching a lower pressure limit. Thus, the pressure in the line on the output side of the pressure-increasing device is maintained between the upper and lower pressure limits.
  • the control device is designed such that it automatically adapts at least one pressure control parameter of the control device in this start-stop operation.
  • a pressure control parameter is a parameter on which the control of the booster pump is based by the control device, in particular a parameter which has an influence on the switch-on and switch-off times in the start-stop mode.
  • the automatic adaptation of this at least one pressure-control parameter is carried out according to the invention on the basis of the time advance of at least one pressure value detected by the pressure sensor.
  • a self-learning system is created which automatically adapts to the current conditions in the hydraulic system on the output side of the pressure-increasing device.
  • control means is arranged such that the adjustment takes place in such a way that the pressure difference between the upper and the lower pressure limit value is minimized without increasing the number of switch-on operations over a predetermined limit value.
  • This ensures that the running time of the booster pump in the start-stop operation is substantially not prolonged, but at the same time the comfort is improved by minimizing pressure fluctuations in the system. Thus, the comfort can be increased while energy efficiency.
  • the pressure-increasing device or its control device is designed such that the at least one pressure-control parameter, which is automatically adjusted, is the upper and / or lower pressure limit.
  • the pressure control parameter may be the difference between the upper and the lower pressure limit, ie a Hystrese span.
  • the adaptation of the pressure limits or their difference enables an automatic adjustment of the pressure increasing device to the subsequent hydraulic system or the conditions prevailing in the system by the pressure limits are adjusted so that the pressure difference is minimized during operation, without the number of power-on or to substantially increase the total on-duration of the booster pump. So a comfort gain is achieved.
  • an adaptation of the system to a tank volume of a buffer tank in the system is possible. With large volumes, it is possible to reduce the pressure difference, so that overall lower pressure fluctuations occur in the system.
  • the control device is designed such that the adjustment of the at least one pressure control parameter, for example, the upper and / or lower pressure limit, based on the temporal flow of the at least one detected pressure value in such evaluation periods, in which is given a constant flow in the line.
  • the at least one pressure control parameter for example, the upper and / or lower pressure limit
  • control device is designed such that it sets the Auwertzeitschreib in such periods in which in the start-stop operation, the pressure booster pump is turned on. That is, the temporal pressure curve, on the basis of which the adaptation of the pressure control parameter takes place, is preferably detected during the pressure increase by the pressure booster pump.
  • control device is designed so that the said evaluation periods are placed in periods in which a speed of the pressure booster pump is increased or decreased by the control device.
  • control device is preferably designed such that it monitors the pressure profile, that is the course of the pressure measured by the at least one pressure sensor in the system and makes an adjustment of at least one pressure control parameter only as long as the pressure profile in predefined Limits follows a desired pressure curve. If this is the case, it can be concluded from this that there are no changes in the stable operating state, which are due, for example, to the fact that tapping points are opened or closed. These influences should be excluded according to the invention as far as possible.
  • control device is designed such that it is suitable for adapting the at least a prediction error method (prediction error system identification method) is used for a pressure control parameter.
  • a prediction error method prediction error system identification method
  • the deviation from a predicted pressure value is considered, and an adjustment is made in such a manner that this deviation or error is minimized.
  • the controller preferably includes a prediction system for predicting a pressure value based on a predictive model.
  • the prediction system is designed so that the prediction takes place as a function of the speed of the booster pump. That is, the predictive system predicts an expected pressure value in the system in response to a current speed of the booster pump.
  • the prediction system adjusts at least one system parameter in the predictive model based on a predetermined algorithm. This achieves that the predictive model is adapted to the actual system and the prediction error is minimized or becomes smaller.
  • this system can also be used to detect changes in the hydraulic system, such as leaks. If larger changes of the at least one system parameter in the prediction model are required after a previously constant operation, this indicates a change in the system, for example leakage.
  • the control device can be designed so that, if it detects such a deviation, for example, indicates an error.
  • the prediction system is preferably adapted to use a predictive model which is an autoregressive model (ARX-model), in particular a first-order autoregressive model (ARX-model). Based on such a model, a prediction of the pressure values can be achieved in a simple manner. Further, in such a model, at least one system parameter used may be adjusted in the manner described above to minimize the prediction error.
  • ARX-model autoregressive model
  • ARX-model first-order autoregressive model
  • control device is designed such that the at least one pressure control parameter depending on the at least one system parameter in the prediction model, in particular based on a predetermined algorithm or a table, in particular a predetermined and stored in the control device Table is fixed.
  • the above-described pressure limit values can also be adapted as pressure-control parameters as a function of the system parameter in the predictive model, which is adapted in the manner described above.
  • the pressure control parameter which preferably has an influence on the on and / or off times of the booster pump in start-stop operation, is adjusted as a function of the at least one adapted system parameter, so that in addition to minimizing the prediction error in the previously described manner, the pressure difference between switching on and off of the booster pump can be minimized and so a comfort gain can be achieved.
  • the control device preferably has a pressure regulator, which regulates the pressure booster pump to a pressure setpoint.
  • the pressure regulator is supplied with the pressure setpoint as an input variable.
  • the pressure setpoint is preferably from the control device set based on a user-specified desired pressure value.
  • the at least one pressure control parameter may be a control parameter in the pressure regulator.
  • a pressure control parameter may be adjusted alone or in addition to other pressure control parameters in the manner described above based on the time history of the pressure value.
  • the pressure-increasing device is designed so that the output side of the booster pump, a check valve is arranged.
  • a check valve is advantageous to ensure when switched off booster pump that no backflow of the liquid occurs and the pressure on the output side of the booster pump, that is, the output side of the check valve is held. Furthermore, this check valve closes at low flow rates.
  • a speed change of the booster pump has no influence on the actual pressure measured by the pressure sensor downstream of the check valve.
  • the pressure sensor is preferably arranged downstream of the check valve. If the speed change no longer has an influence on the actual pressure, the actual pressure will no longer follow the predicted pressure value if the pressure setpoint that the pump attempts to adjust by the speed change decreases. From this, a low flow can be detected and the controller can switch the controller to the described start-stop mode. In this state, the described adaptation of the at least one pressure control parameter then takes place.
  • control device is preferably designed such that it controls the pressure booster pump in an operating range in which a low flow prevails in the described start-stop operation and in at least one other operating range, preferably a larger flow operating range, the pressure booster pump to reach regulates a desired pressure increase in their speed.
  • the limit for the start-stop operation may be in a known manner, for example in the off DE 38 24 293 A1 done known manner. In particular, as described above, this can be detected by the action of the check valve and by whether the actual pressure profile follows the predicted pressure curve within desired limits.
  • the booster pump is preferably in continuous operation and the pressure is adjusted by speed control or speed adjustment in the desired manner.
  • the booster pump is preferably an electronically controlled pump, in particular a regulated via a frequency converter pump, so that the speed can be changed arbitrarily.
  • the controller is preferably configured to detect the low flow area.
  • the control device can preferably have a flow detection model, which is designed to detect the operating range of low flow rate based on at least one pressure value detected by the pressure sensor and based on speed changes of the booster pump.
  • the pressure sensor is preferably arranged behind a check valve, as described above.
  • the flow detection model can detect the low flow range by the fact that with the check valve closed, which occurs at low flow, the measured pressure value no longer follows a change in the target pressure. The That is, the limit for the low-speed region in which to switch to the start-stop operation depends on the function of the check valve, and preferably on its bias.
  • Fig. 1 schematically shows a pressure increasing device in a drinking water supply line.
  • the pressure-increasing device has a pressure booster pump 2, to which the output side downstream of a check valve 4 is connected.
  • a buffer tank 6 On the output side of the check valve 4, a buffer tank 6 is arranged, which may be formed in a conventional manner as a storage tank with a membrane and a closed air volume arranged above.
  • a pressure sensor 8 is arranged, which detects the pressure P on the output side of the booster pump 2 and the output side of the check valve 4.
  • a valve 10 is shown schematically, which is to represent one or more consumers, for example, removal points and via which the flow in the line 5 is set on the output side of the check valve 4. It should be understood that instead of a valve 10, a branched network with a plurality of valves 10 may in practice be connected to the conduit 5.
  • a control device 12 which controls the pressure booster pump 2 or regulates.
  • the booster pump 2 is to be controlled by the controller 12 on the one hand and off to another but also in their speed.
  • the pressure booster pump 2 can be controlled via a speed controller, in particular a frequency converter.
  • the control device 12 is signal-connected to the pressure sensor 8 so that it receives the pressure values detected by the pressure sensor 8.
  • booster pump 2 instead of a single booster pump 2, a plurality of pressure booster pumps connected in parallel and / or in series could be used, which are controlled by the control device 12. If a booster pump 2 is described here, it is to be understood that this expressly also includes an arrangement of a plurality of booster pumps 2.
  • the booster pump 2 preferably runs in continuous operation and is regulated by the control device 12 as a function of the pressure value detected at the pressure sensor 8 in terms of its speed in order to achieve or maintain a set pressure value.
  • the check valve 4 closes and the speed control of the booster pump 2 no longer has any influence on a reduction in the pressure in the line 5.
  • a pressure control as described above, can no longer be performed.
  • the pressure increasing device switches to a start-stop operation in which the booster pump 2 is turned on when the pressure P in the line 5 falls below a lower pressure limit, and the booster pump 2 is turned off when the pressure P in the line 5 reaches an upper pressure limit. This switching on and off of the booster pump 2 is accomplished by the controller 12.
  • Fig. 2a and Fig. 2b is plotted in each case the upper diagram of the pressure P in the line 5 over the time t.
  • the lower diagram shows in each case over the time t the switch-on states of the booster pump 2.
  • Fig. 2a shows in the upper curve the pressure curve over time t for a small tank volume and in the lower curve the associated switch-on states.
  • the pressure booster pump 2 is in each case on reaching the upper pressure limit P 1 to the switch-off T A switched off.
  • the upper pressure limit P 1 is reduced to the pressure limit P 1 'and the lower pressure limit P 2 is increased to the lower pressure limit P 2 ', ie the Hystresespanne is reduced to P 1 '- P 2 '.
  • the pressure difference between switching off and on of the booster pump 2 decreases.
  • the time interval between the switch-off times T A and the switch-on times T E is also shortened again.
  • FIG. 7 which shows the pressure curve P over the time t, similar to the upper curve in FIG Fig. 2b .
  • a first operating state a there is a low flow with a small tank volume.
  • the actual pressure P fluctuates around the user-selected pressure P u in a relatively wide range.
  • the switching intervals are short.
  • the operating state b in Fig. 7 represents a low flow state with a larger tank volume.
  • the pressure fluctuations remain the same, however, the intervals between switching on and off the booster pump 2 extend.
  • the operating range c represents a low flow rate for a large tank volume after adjustment of the pressure Pressure limits P 1 and P 2 .
  • the switching intervals are shortened again.
  • the pressure fluctuation decreases by the desired value P u .
  • the operating range d corresponds to a high-flow operating range in which the booster pump 2 is no longer operated in start-stop operation but in constant operation with pressure control. There are essentially no pressure fluctuations in this operating range.
  • Fig. 3 shows in a diagram the sequence of the control or the pressure booster pump 2 by the control device 12.
  • the in Fig. 3 shown control components are integrated into the control device 12 and run there in corresponding modules. These are in particular software modules.
  • the physical system 14 and its influences on the control are in Fig. 3 indicated by the dashed line.
  • An essential component of the physical system 14 is a transfer function 16, which represents the hydraulic system or is formed by the hydraulic system and of which the conversion of the speed n of the pressure booster pump 2 in the pressure P in the line 5 depends.
  • a user-dependent transfer function 18 which represents the influence of the position of the valve 10.
  • the pressure P in the line 5 also changes. This is represented by the transfer function 18.
  • the speed n is the output of a pressure regulator 20, which is integrated in the control device 12.
  • the pressure regulator 20 is supplied with a target pressure Ps from which the actual pressure P at the subtractor 22 is subtracted.
  • the target pressure P S is calculated or output by a state control module 24.
  • the state control module 24 is supplied as input a desired by the user pressure P u .
  • the difference between the upper pressure limit P 1 and the lower pressure limit P 2 , ie a Hystresespanne P 1 - P 2 is determined in a parameter module 28. This is done on the basis of the parameters a 1 and b 1 determined in a prediction module 26.
  • a predictive model is used, which in the present example is a first-order autoregressive model (ARX model). Its parameters a 1 and b 1 are determined in a prediction module 26.
  • the prediction module 26 is supplied with the actual pressure P, the rotational speed n and a state value Z as inputs, the state value Z representing the operating region, namely a small flow operating region or a high flow operating region, wherein in the small flow operating region the start-stop Operation comes into use.
  • the control or control is adapted to the state of the physical system 14 by setting in the parameter module 28 the pressure control parameter in the form of the difference P 1 - P 2 of the pressure limits P 1 and P 2 is adjusted.
  • the difference of the pressure limits P 1 and P 2 is an example of a pressure-control parameter to be adjusted.
  • pressure control parameters can be adjusted in a corresponding manner, for example, parameters which are incorporated into the pressure control.
  • the actual pressure limits P 1 and P 2 are set by the state control module 24 based on the desired pressure P U , so that the desired pressure P U is preferably located in the middle of the hysteresis range P 1 -P 2 .
  • the control device 12 and in particular its state control module 24 have, in particular, an operating state recognition function in order to determine the region of small flow in which a start-stop operation is to take place. How this works is determined by Fig. 4 explained.
  • Fig. 1 the lower curve shows the speed n of the booster pump 2 over the time t.
  • the upper curve shows the pressure curve of the pressure P over the time t, wherein the solid line represents the actual measured pressure P at the pressure sensor 8 and the dashed line represents the desired pressure P S.
  • the middle diagram in Fig. 4 shows the flow rate Q over time t. In this case, the three diagrams shown represent a temporally parallel sequence.
  • the flow rate Q drops, so that the operating state changes from a state of high flow to the state of small flow or substantially without flow.
  • the actual pressure P first increases and, because of the pressure regulation carried out in the pressure regulator 20, drops back to the set pressure P S.
  • the detection is made whether a state of lower flow is given.
  • the target pressure P S and thus the rotational speed n is reduced and it is checked whether the actual pressure curve P follows the course of the target pressure P S. This is in Fig. 4 clearly not the case.
  • the system then switches to start-stop mode.
  • the booster pump 2 is turned on in this example.
  • the speed n and thus the pressure P increase.
  • the booster pump 2 is turned off.
  • the speed initially drops.
  • the pressure P then drops more slowly, as based on Fig. 2 was explained.
  • a 1 and b 1 represent two parameters.
  • ⁇ represents a step size parameter and e the prediction error.
  • the operation of the prediction error model for the adaptation of the predicted pressure Pp is based on Fig. 5 explained.
  • Fig. 5 In the upper diagram, the pressure plotted against the time t, the solid line showing the measured pressure P and the broken line the predicted pressure Pp.
  • the second graph shows the prediction error e versus the time t and the two lower curves represent the parameters a 1 and b 1 over the time t. It can be seen that initially the predicted pressure Pp deviates greatly from the actual pressure P.
  • a prediction error e based on which the parameters a 1 and b 1 are adjusted so as to coincide the predicted pressure Pp and the actual pressure P, that is, the prediction error e becomes substantially equal to zero.
  • this prediction error method is also used to adapt at least one pressure control parameter in the parameter module 28.
  • the pressure control parameter is the difference P 1 -P 2 of the pressure limits P 1 and P 2 .
  • the adaptation of these pressure limit values takes place in this embodiment on the basis of the parameter b 1 .
  • a table is stored, which for certain parameters b 1 pressure differences between the pressure limits P 1 and P 2 , ie pressure hysteresis spans defined.
  • pressure limits P 1 and P 2 could also be stored directly in the table, but it would additionally be necessary to supply the parameter module 28 with the desired pressure P U and to take this into account in the table.
  • a table from which the pressure difference P 1 - P 2 result can, for example, as in Fig. 6 look like this.
  • a pressure difference or a hysteresis margin of 0.1 bar is provided between the pressure limit values P 1 and P 2 , while in the case that the parameter b 1 is greater than or equal to 0.32 is, a pressure difference or hysteresis range of 0.5 bar is provided.
  • the table is configured in more detail in even more printing steps to allow a finer adjustment.
  • the described adaptation of the parameters a 1 and b 1 preferably takes place at operating points or in operating ranges of the pressure booster pump 2, in which a stable operating state, that is to say in particular a flow which is as constant as possible, is provided.
  • a stable operating state that is to say in particular a flow which is as constant as possible.
  • the control device 12 is preferably designed such that it recognizes these operating states. In particular, it recognizes a change in the flow rate due to the fact that in the operating ranges mentioned Pressure suddenly changes or the actually measured pressure P deviates from the target pressure P S.
  • the control device 12 may be configured such that, for example, whenever in the start-stop operation, the pressure booster pump 2 is turned on, a parameter adjustment of the parameters a 1 and b 1 is performed, provided that no changes in the pressure curve due to a change in the position of Valve is detected.
  • the table according to which the differential P 1 - P 2, the pressure limit values P 1 and P 2 is adjusted is predetermined so that the pressure difference or pressure hysteresis value P 1 as a function of the parameter b 1 - P 2 is determined so that the pressure difference is minimized without the number of turn-on operations of the booster pump 2 exceeds a certain limit.
  • the predetermined table Since the parameter b 1 is dependent on the course of the measured pressure P, in this way also the difference P 1 -P 2 of the pressure limit values P 1 and P 2 , which represents the pressure control parameter, based on the course of the measured pressure P adjusted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Computer Hardware Design (AREA)
  • Structural Engineering (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Fluid Pressure (AREA)
EP15190110.5A 2015-10-16 2015-10-16 Dispositif d'augmentation de pression Active EP3156651B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP15190110.5A EP3156651B1 (fr) 2015-10-16 2015-10-16 Dispositif d'augmentation de pression
US15/293,708 US11326591B2 (en) 2015-10-16 2016-10-14 Pressure boosting device
RU2016140465A RU2658719C2 (ru) 2015-10-16 2016-10-14 Повышающее давление устройство
CN201610902881.5A CN106869249B (zh) 2015-10-16 2016-10-17 增压装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15190110.5A EP3156651B1 (fr) 2015-10-16 2015-10-16 Dispositif d'augmentation de pression

Publications (2)

Publication Number Publication Date
EP3156651A1 true EP3156651A1 (fr) 2017-04-19
EP3156651B1 EP3156651B1 (fr) 2021-01-20

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EP15190110.5A Active EP3156651B1 (fr) 2015-10-16 2015-10-16 Dispositif d'augmentation de pression

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US (1) US11326591B2 (fr)
EP (1) EP3156651B1 (fr)
CN (1) CN106869249B (fr)
RU (1) RU2658719C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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DE102019213530A1 (de) * 2019-09-05 2021-03-11 Robert Bosch Gmbh Verfahren und Vorrichtung zum Betreiben eines Wasserverteilungssystems
DE102020105670A1 (de) 2020-03-03 2021-09-09 KSB SE & Co. KGaA Druckerhöhungsanlage zur Erhöhung des Versorgungsdrucks in der Wasserversorgung wenigstens einer Entnahmestelle oder eines hydraulischen Verbrauchers

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CN110454370B (zh) * 2019-08-19 2020-11-10 蘑菇物联技术（深圳）有限公司 一种动态优化空压站联控压力带的方法
DE102019134613B3 (de) * 2019-12-16 2021-03-18 Aventics Gmbh Ventilanordnung und Verfahren zur Druckregelung eines Fluids
US20220155117A1 (en) * 2020-11-16 2022-05-19 Sensia Llc System and method for quantitative verification of flow measurements
CN115030904A (zh) * 2022-06-30 2022-09-09 朱志海 一种压力控制式循环增压泵

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US7080792B2 (en) * 1999-01-21 2006-07-25 Sugino Machine Limited Liquid pressurizing device
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WO2020044231A1 (fr) * 2018-08-29 2020-03-05 Atlas Copco Airpower, Naamloze Vennootschap Compresseur ou pompe équipée d'une commande pour la régulation de la plage de travail et méthode de travail appliquée pour la régulation
BE1026577B1 (nl) * 2018-08-29 2020-03-30 Atlas Copco Airpower Nv Compressor of pomp voorzien van een sturing voor de regeling van een regelparameter en werkwijze voor de regeling daarbij toegepast
BE1026539B1 (nl) * 2018-08-29 2020-09-14 Atlas Copco Airpower Nv Compressor of pomp voorzien van een sturing voor de regeling van het werkingsgebied en werkwijze voor de regeling daarbij toegepast
US11976647B2 (en) 2018-08-29 2024-05-07 Atlas Copco Airpower Naamloze Vennootschap Compressor or pump equipped with a control for the regulation of the working range and working method applied for the regulation
DE102019213530A1 (de) * 2019-09-05 2021-03-11 Robert Bosch Gmbh Verfahren und Vorrichtung zum Betreiben eines Wasserverteilungssystems
DE102020105670A1 (de) 2020-03-03 2021-09-09 KSB SE & Co. KGaA Druckerhöhungsanlage zur Erhöhung des Versorgungsdrucks in der Wasserversorgung wenigstens einer Entnahmestelle oder eines hydraulischen Verbrauchers

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CN106869249A (zh) 2017-06-20
RU2658719C2 (ru) 2018-06-22
US11326591B2 (en) 2022-05-10
CN106869249B (zh) 2020-06-19
US20170107702A1 (en) 2017-04-20
EP3156651B1 (fr) 2021-01-20
RU2016140465A (ru) 2018-04-17

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