EP3508730A1 - Procédé de réglage d'une installation d'augmentation de la pression - Google Patents

Procédé de réglage d'une installation d'augmentation de la pression Download PDF

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Publication number
EP3508730A1
EP3508730A1 EP18020478.6A EP18020478A EP3508730A1 EP 3508730 A1 EP3508730 A1 EP 3508730A1 EP 18020478 A EP18020478 A EP 18020478A EP 3508730 A1 EP3508730 A1 EP 3508730A1
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EP
European Patent Office
Prior art keywords
pressure
value
control electronics
maximum
building
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Granted
Application number
EP18020478.6A
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German (de)
English (en)
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EP3508730B1 (fr
Inventor
Daniel BÜNING
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Wilo SE
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Wilo SE
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Priority to EP18020478.6A priority Critical patent/EP3508730B1/fr
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0077—Safety measures
    • 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
    • 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

Definitions

  • the invention relates to a method for setting a proportional pressure control curve in the control electronics of a pressure booster for supplying a hydraulic network in a building with a number of tapping points.
  • the invention further relates to a pressure booster for carrying out the method.
  • Pressure increase systems are pumping stations with one or more parallel pump units and are mainly used in drinking water supply. They increase the pressure of the drinking water provided by a supplier and thus convey it via a pipeline system to all removal points, such as taps, toilets, or showers. It must be ensured that sufficient pressure is always present at each sampling point so that the drinking water flows out of the sampling point.
  • the actual pressure at the consumer is usually not known, so that the pumping station is always chosen so oversized and exaggerated high, that even with unfavorable system conditions, for example, simultaneously opened tapping points, the worst-supplied tapping point is always adequately supplied.
  • This method allows the setting of a suitable pressure control curve on the pressure booster without requiring any user to know the pressure losses in the hydraulic network.
  • Three system values for the setting are already sufficient. These are easy to determine, so the process is very user-friendly.
  • the first plant value is the nominal flow that is to be present at the highest extraction point located in the building when a water is withdrawn.
  • a building is understood to mean a building which comprises one or more covered rooms, can be entered and serves the purpose of keeping people, animals or the storage of objects.
  • the rooms do not necessarily have to be closed on all sides.
  • the building can have any number of floors and extend in height or in depth.
  • the use of the building for private, public or industrial purposes is arbitrary.
  • the building may include a residential building, an apartment building, an office building, a skyscraper, a public Facility such as a school, a library, a hospital, a gym, etc.
  • the building can also be part of a complex of buildings, such as an airport or an exhibition center.
  • the hydraulic network may extend horizontally and / or vertically. It can span the entire building or only part of the building. In the latter case, for example, not all rooms have tapping points but only some rooms. Further, in the case of a multi-level building, the hydraulic network may extend only over some of the floors, i. not across all floors. In addition, the hydraulic network can also extend over two or more buildings, as is the case for example with housing complexes comprising several houses, or with row houses.
  • unfavorable removal point that removal point of the network can be considered until the achievement of a conveyed medium from the pressure booster considered the largest pressure losses.
  • the most unfavorable removal point may be that withdrawal point which is highest in the building or furthest away from the push-pull system.
  • the volume flow value (Q 100% ) preferably forms a factory-set default value whose confirmation or change the control electronics expects.
  • the volume flow value therefore does not have to be specified by the user. Rather, the control electronics in turn suggests the volume flow value, which is formed by the factory set and stored default value. The user can accept or change this default value and thus specify accordingly.
  • the first asset value on the part of the user requires neither knowledge of the pressure booster system nor knowledge of the hydraulic network.
  • the change of the default value for the volume flow value can advantageously be limited by the control electronics to a certain range of change in order to avoid that the user sets a meaningless value by the change.
  • the default value corresponds to the flow rate at maximum hydraulic power of the pressure booster.
  • the default value is thus based on the characteristic curve field of the pressure increase system in the HQ diagram on the maximum pump curve. This ensures that along the pressure control curve the entire performance of the pressure booster can be exploited.
  • the volume flow value (Q 100% ) can form a user-definable input value, the input of which the control electronics expects. This allows an individual adaptation of the pressure increase system according to the user's request.
  • the default value can be displayed to the user as a suggestion or reference value by the control electronics.
  • the second asset value is the geodetic height.
  • the geodetic height refers to the difference in height between the pressure booster and the highest extraction point.
  • the height value (H geo ) forms an input value to be preset directly by a user whose input the control electronics expects.
  • This height value is a size that can be easily determined on the building.
  • the height value (H geo ) is determined from another information that indicates a user of the control electronics.
  • H geo is determined from another information that indicates a user of the control electronics.
  • the height value can be determined from a building height specified by the user whose input the control electronics expect. This then calculates the height value, for example from the assumption that the pressure booster system is installed in the basement and the highest extraction point is on the top floor.
  • the building height as Altitude value for the geodetic height can be assumed, since the extent to which the building height must be increased due to the installation of the pressure booster in the basement, corresponds approximately to the extent to which the building height must be reduced due to the position of the highest removal point on the upper floor.
  • the user can manually change the ascertained altitude value.
  • the height value (H geo ) can be determined from a floor number specified by the user.
  • the control electronics per floor with a fixed floor height such as 3m can be expected.
  • the floor height can be specified in addition, the input of the control electronics expected.
  • the height value is determined from the number of floors and the floor level.
  • the pressure value (p FL ) form a factory default value whose confirmation or change expected the control electronics.
  • This pressure value can be, for example, between 1bar and 3bar.
  • the pressure value does not have to be specified by the user. Rather, the control electronics in turn proposes the pressure value, which is formed by the factory set and stored default value. The user can accept or change this default value and thus specify accordingly.
  • the third asset value on the part of the user neither knowledge of the pressure booster system nor knowledge of the hydraulic network is required.
  • the change of the preset value for the pressure value can be advantageously limited by the control electronics to a certain range of change in order to avoid that the user sets a meaningless value by the change.
  • the user specifies the pressure value freely.
  • the pressure value can form a user-definable input value whose input the control electronics expects. This allows an individual adaptation of the pressure increase system according to the Desire of the user.
  • the default value can be displayed to the user as a suggestion or reference value by the control electronics.
  • the maximum pressure forms the highest point of the pressure control curve to be set, which is thus likewise established. As a result, thus the entire pressure control curve is fixed and can be adjusted by the control electronics.
  • a trend function in the sense of the present invention describes the dependence of the maximum pressure loss ( ⁇ p loss, max ) on the volume flow (Q) according to a root function.
  • a trend function can be determined empirically, for example by means of a standard-compliant pipe sizing and the pressure loss calculation according to generally known references in a hydraulic network, by means of which the system characteristic curve can be determined. This way, each pipe sizing can be assigned a specific trend function. If the pipe dimensioning corresponds to a specific design standard, a particular trend function can thus also be assigned to this particular design standard.
  • the trend functions for different pipe dimensions or different design standards differ in particular only by their slope, which can be described by a factor.
  • the trend function can advantageously describe the dependence of the maximum pressure loss ( ⁇ p loss, max ) on the volume flow (Q) according to a root function whose slope is defined by a selectable design factor (k A ).
  • the design factor determines the slope of the trend function, so that only a single trend function needs to be stored in the control electronics. This can be done as a value table or as a function.
  • a predefined mean value of the design factor (k A ) can be used to determine the trend function and to calculate the maximum pressure loss.
  • control electronics expected the specification of the building age of the building and then selects the design factor (k A ) from a number of stored design factors based on the user entered building age.
  • the corresponding trend function the slope of which is defined by the selected design factor (k A ), is then used to calculate the maximum pressure loss.
  • the age of the building is also an easily determinable quantity for which the user has neither technical knowledge of the characteristics of the pressure booster system nor knowledge of the hydraulic network of the building needed. It can thus be set in a simple manner and with few input variables for the building or the hydraulic network energetically good proportional pressure control curve in the pressure booster system, the control electronics of the pressure booster does this themselves.
  • the invention also relates to a pressure booster for supplying a hydraulic network in a building with a number of extraction points, comprising at least one pump unit and this regulating electronic control, wherein the control electronics is set up to carry out the inventive method.
  • the inventive method can be stored, for example in the form of a software-based settings assistant in the control electronics, which thus facilitates the adjustment of the pressure control curve at the pressure booster.
  • the maximum volume flow is the maximum volume flow on the pressure control curve. In practice, the volume flow can go beyond this, the pressure control curve then goes over into a plateau, wherein a constant pressure is predetermined and the maximum pump curve forms the limit.
  • the flow pressure is the static overpressure of a flowing medium, which must be present at the most unfavorable sampling point in a tapping process, so that the required amount of water can flow out. Also in the case of the flow pressure, it is possible to use a default value which is proposed to the user, since at a removal point usually at least 1 bar, preferably 2 bar flow pressure p FL, should be applied in order to obtain an adequate flow. Again, the user only needs to confirm this proposed default value to the control electronics.
  • the geodetic height here corresponds to the difference in height between the pressure booster and the highest extraction point and can thus be easily determined by the user.
  • the geodesic height is 24m.
  • the maximum pressure p Q100% results from a mere conversion of the geodetic altitude value H geo into a pressure value, addition of the flow pressure value p FL and addition of a maximum pressure loss ⁇ p loss, max .
  • the numerical values given by way of example result in a maximum pressure p Q100% of 5.15 bar (H geo / 10.21 + p FL + ⁇ p loss, max ).
  • the calculation of the maximum pressure loss ⁇ p loss, max is based on Fig. 3 illustrated.
  • the trend functions T1 to T5 differ here only in their slope, which is described by a design factor k A.
  • the slope of the trend function depends on the hydraulic network of the building, which operates the pressure booster, for example on the pipe diameter.
  • the trend functions T1, T2, T4 and T5 are empirically determined on the basis of the pipe sizing of hydraulic systems according to various design standards 1, 2, 3 and 4 and generally known pressure loss calculation according to the literature.
  • the DIN 1988 can be used, which describes the technical rules for new drinking water installations and indicates the associated, correct selection of the pipe diameter.
  • This design standard has been amended several times over the past decades and the pipe diameters specified therein have been adapted, so that during the validity of a specific design standard, a specific pipe diameter was also valid. Due to the empirical determination of a particular trend function from one or more specific pipe diameters, any design standard for pipe diameters is assigned a specific trend function that can be used to calculate the maximum pressure loss.
  • the DIN EN 806 can be used.
  • a suitable trend function can be determined over the building age in order to determine the maximum pressure losses more accurately than by means of the representative mean trend function T3.
  • the control electronics expected an input of the building age. Accordingly, the building age can be specified by the user.
  • the control electronics selects one of the trend functions according to the entered building age.
  • all trend functions can be stored in the control electronics, for example in the form of a value table or in the form of a mathematical function.
  • the design factor k A can be used, with each building age being assigned a design factor k A and selected by the user after the building age has been entered. Then only one trend function, for example the mean trend function T3, has to be stored in the control electronics, which is then simply multiplied by the design factor k A.
  • a height factor k E to be multiplied by the trend function can be taken into account, which is the greater, the higher the geodetic height is.
  • this height factor may for example be 1, increase linearly above the limit value, for example be 2 at 125 m, so that the slope is doubled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Control Of Fluid Pressure (AREA)
EP18020478.6A 2018-10-01 2018-10-01 Procédé de réglage d'une installation d'augmentation de la pression Active EP3508730B1 (fr)

Priority Applications (1)

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EP18020478.6A EP3508730B1 (fr) 2018-10-01 2018-10-01 Procédé de réglage d'une installation d'augmentation de la pression

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EP18020478.6A EP3508730B1 (fr) 2018-10-01 2018-10-01 Procédé de réglage d'une installation d'augmentation de la pression

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EP3508730A1 true EP3508730A1 (fr) 2019-07-10
EP3508730B1 EP3508730B1 (fr) 2022-05-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116339175A (zh) * 2023-05-30 2023-06-27 合肥荣叙科技有限公司 基于大数据分析的供水泵房自控系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2476907A1 (fr) * 2011-01-14 2012-07-18 Grundfos Management a/s Système et procédé de contrôle de la pression dans un réseau
EP2915926A2 (fr) * 2014-02-05 2015-09-09 Wilo Se Procédé de détermination de la caractéristique de système d'un réseau de distribution
EP3026352A1 (fr) * 2014-11-14 2016-06-01 PAW GmbH & Co. KG Procede de regulation hydraulique de plusieurs circuits de chauffe sur nourrices de distribution
WO2017178115A1 (fr) * 2016-04-15 2017-10-19 Wilo Se Ensemble pompe centrifuge et procédé de réglage de son fonctionnement
EP3366925A1 (fr) * 2017-02-23 2018-08-29 Wilo Se Procédé de réglage fonctionnel d'un groupe motopompe ainsi que l'agencement d'un groupe motopompe et d'une électronique destiné à la mise en oeuvre dudit procédé

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2476907A1 (fr) * 2011-01-14 2012-07-18 Grundfos Management a/s Système et procédé de contrôle de la pression dans un réseau
EP2915926A2 (fr) * 2014-02-05 2015-09-09 Wilo Se Procédé de détermination de la caractéristique de système d'un réseau de distribution
EP3026352A1 (fr) * 2014-11-14 2016-06-01 PAW GmbH & Co. KG Procede de regulation hydraulique de plusieurs circuits de chauffe sur nourrices de distribution
WO2017178115A1 (fr) * 2016-04-15 2017-10-19 Wilo Se Ensemble pompe centrifuge et procédé de réglage de son fonctionnement
EP3366925A1 (fr) * 2017-02-23 2018-08-29 Wilo Se Procédé de réglage fonctionnel d'un groupe motopompe ainsi que l'agencement d'un groupe motopompe et d'une électronique destiné à la mise en oeuvre dudit procédé

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116339175A (zh) * 2023-05-30 2023-06-27 合肥荣叙科技有限公司 基于大数据分析的供水泵房自控系统
CN116339175B (zh) * 2023-05-30 2023-07-25 合肥荣叙科技有限公司 基于大数据分析的供水泵房自控系统

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