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RU2013137441A - METHOD FOR POWER OPTIMIZED PUMP OPERATED BY ELECTRIC MOTOR, AT LOW VOLUME COSTS - Google Patents

METHOD FOR POWER OPTIMIZED PUMP OPERATED BY ELECTRIC MOTOR, AT LOW VOLUME COSTS Download PDF

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Publication number
RU2013137441A
RU2013137441A RU2013137441/06A RU2013137441A RU2013137441A RU 2013137441 A RU2013137441 A RU 2013137441A RU 2013137441/06 A RU2013137441/06 A RU 2013137441/06A RU 2013137441 A RU2013137441 A RU 2013137441A RU 2013137441 A RU2013137441 A RU 2013137441A
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Russia
Prior art keywords
pressure value
volumetric flow
flow rate
pump
pressure
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RU2013137441/06A
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Russian (ru)
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RU2553630C2 (en
Inventor
Франк АЛЬБЕРС
Эдгар ГРОССЕ-ВЕСТХОФФ
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Вило Се
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Publication of RU2013137441A publication Critical patent/RU2013137441A/en
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Publication of RU2553630C2 publication Critical patent/RU2553630C2/en

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Classifications

    • 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
    • F04B49/20—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 by changing the driving speed
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/08—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • 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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • 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
    • F04B2205/09—Flow through the pump
    • 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
    • F04B2207/00—External parameters
    • F04B2207/04—Settings
    • F04B2207/041—Settings of flow
    • F04B2207/0411—Settings of flow maximum
    • 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
    • F04B2207/00—External parameters
    • F04B2207/04—Settings
    • F04B2207/041—Settings of flow
    • F04B2207/0412—Settings of flow minimum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1012—Arrangement or mounting of control or safety devices for water heating systems for central heating by regulating the speed of a pump

Landscapes

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

Abstract

1. Способ оптимизированной по мощности эксплуатации насоса, приводимого в действие электродвигателем, в гидравлической системе при очень малых объемных расходах (Q), причем заданный напор (H) насоса регулируется в зависимости от объемного расхода (Q) в соответствии с предварительно установленной характеристической кривой (К), отличающийся тем, что снижают заданный напор (Н) по отношению к предварительно установленной характеристической кривой (К), если объемный расход (Q) опускается ниже опорного значения (Q_ref), которое составляет максимально десятую часть, предпочтительно двадцатую часть максимального объемного расхода (Q_max) на характеристической кривой (К), причем снижение осуществляют, пока объемный расход (Q) лежит ниже опорного значения (Q_ref) объемного расхода и минимальное значение (H_min) напора еще не достигнуто.2. Способ по п. 1, отличающийся тем, что снижение осуществляют непрерывно.3. Способ по п. 1 или 2, отличающийся тем, что снижение осуществляют с постоянной скоростью снижения.4. Способ по п. 1, отличающийся тем, что насосом после достижения минимального значения напора управляют тактируемым образом, причем попеременно выполняют переключение между первым значением напора и вторым значением напора, которое лежит ниже первого значения напора.5. Способ по п. 4, отличающийся тем, что первое значение напора соответствует минимальному значению (H_min) напора.6. Способ по п. 4 или 5, отличающийся тем, что второе значение напора равно нулю.7. Способ по п. 4 или 5, отличающийся тем, что второе значение напора постепенно снижают.8. Способ по п. 4 или 5, отличающийся тем, что по меньшей мере в течение временного интервала, в котором нас1. A method for the power-optimised operation of a pump driven by an electric motor in a hydraulic system at very low volumetric flow rates (Q), wherein a specified pressure head (H) of the pump is controlled as a function of the volumetric flow rate (Q) in accordance with a pre-set characteristic curve (K), characterised in that the specified pressure head (H) is reduced in relation to the pre-set characteristic curve (K) if the volumetric flow rate (Q) falls below a reference value (Q_ref), which is at most one tenth, preferably one twentieth, of the maximum volumetric flow rate (Q_max) on the characteristic curve (K), wherein the reduction is carried out as long as the volumetric flow rate (Q) lies below the reference value (Q_ref) of the volumetric flow rate and the minimum value (H_min) of the pressure head has not yet been reached. 2. The method according to claim 1, characterised in that the reduction is carried out continuously. 3. The method according to claim 1 or 2, characterised in that the reduction is carried out at a constant rate of reduction. 4. The method according to claim 1, characterized in that after reaching the minimum pressure value, the pump is controlled in a clocked manner, and alternately switching is performed between the first pressure value and the second pressure value, which is lower than the first pressure value. 5. The method according to claim 4, characterized in that the first pressure value corresponds to the minimum pressure value (H_min). 6. The method according to claim 4 or 5, characterized in that the second pressure value is zero. 7. The method according to claim 4 or 5, characterized in that the second pressure value is gradually reduced. 8. The method according to claim 4 or 5, characterized in that at least during the time interval in which we

Claims (16)

1. Способ оптимизированной по мощности эксплуатации насоса, приводимого в действие электродвигателем, в гидравлической системе при очень малых объемных расходах (Q), причем заданный напор (H) насоса регулируется в зависимости от объемного расхода (Q) в соответствии с предварительно установленной характеристической кривой (К), отличающийся тем, что снижают заданный напор (Н) по отношению к предварительно установленной характеристической кривой (К), если объемный расход (Q) опускается ниже опорного значения (Q_ref), которое составляет максимально десятую часть, предпочтительно двадцатую часть максимального объемного расхода (Q_max) на характеристической кривой (К), причем снижение осуществляют, пока объемный расход (Q) лежит ниже опорного значения (Q_ref) объемного расхода и минимальное значение (H_min) напора еще не достигнуто. 1. A method of optimized operation power of a pump driven by an electric motor in a hydraulic system at very low volumetric flow rates (Q), moreover, the set pressure (H) of the pump is regulated depending on the volumetric flow rate (Q) in accordance with a preset characteristic curve K), characterized in that the predetermined head (H) is reduced with respect to the pre-set characteristic curve (K) if the volumetric flow (Q) falls below the reference value (Q_ref), which is maximally a tenth, preferably a twentieth, of the maximum volumetric flow rate (Q_max) on the characteristic curve (K), and reduction is carried out while the volumetric flow rate (Q) lies below the reference value (Q_ref) of the volumetric flow rate and the minimum value (H_min) of the head has not yet been reached. 2. Способ по п. 1, отличающийся тем, что снижение осуществляют непрерывно.2. The method according to p. 1, characterized in that the reduction is carried out continuously. 3. Способ по п. 1 или 2, отличающийся тем, что снижение осуществляют с постоянной скоростью снижения. 3. The method according to p. 1 or 2, characterized in that the reduction is carried out at a constant rate of decline. 4. Способ по п. 1, отличающийся тем, что насосом после достижения минимального значения напора управляют тактируемым образом, причем попеременно выполняют переключение между первым значением напора и вторым значением напора, которое лежит ниже первого значения напора. 4. The method according to p. 1, characterized in that the pump after reaching the minimum pressure value is controlled in a clockwise manner, and alternately switch between the first pressure value and the second pressure value, which lies below the first pressure value. 5. Способ по п. 4, отличающийся тем, что первое значение напора соответствует минимальному значению (H_min) напора. 5. The method according to p. 4, characterized in that the first pressure value corresponds to the minimum pressure value (H_min). 6. Способ по п. 4 или 5, отличающийся тем, что второе значение напора равно нулю.6. The method according to p. 4 or 5, characterized in that the second pressure value is zero. 7. Способ по п. 4 или 5, отличающийся тем, что второе значение напора постепенно снижают.7. The method according to p. 4 or 5, characterized in that the second pressure value is gradually reduced. 8. Способ по п. 4 или 5, отличающийся тем, что по меньшей мере в течение временного интервала, в котором насос работает с первым значением напора, проверяют, превышает ли или превысил объемный расход (Q) опорное значение (Q_ref) объемного расхода.8. The method according to p. 4 or 5, characterized in that at least during the time interval in which the pump operates with the first pressure value, check whether or not the volumetric flow rate (Q) exceeds the reference value (Q_ref) of the volumetric flow rate. 9. Способ по п. 4 или 5, отличающийся тем, что выполняют переключение между первым значением напора и вторым значением напора с равномерным тактом, причем насос на интервал от 10 до 120 секунд эксплуатируют со вторым значением напора.9. The method according to p. 4 or 5, characterized in that they switch between the first pressure value and the second pressure value with a uniform cycle, and the pump is operated with a second pressure value for an interval of 10 to 120 seconds. 10. Способ по п. 1, отличающийся тем, что заданный напор (Н) вновь повышают и переходят на регулирование по характеристической кривой (К), если объемный проток (Q) превышает или превысил опорное значение (Q_ref) объемного расхода.10. The method according to p. 1, characterized in that the predetermined pressure (H) is again increased and switched to regulation by the characteristic curve (K) if the volumetric duct (Q) exceeds or exceeds the reference value (Q_ref) of the volumetric flow rate. 11. Способ по п. 10, отличающийся тем, что непрерывно осуществляют повышение заданного напора (Н).11. The method according to p. 10, characterized in that the continuously increase the desired pressure (N). 12. Способ по п. 10 или 11, отличающийся тем, что скорость повышения больше, чем скорость снижения.12. The method according to p. 10 or 11, characterized in that the rate of increase is greater than the rate of decline. 13. Способ по п. 1 или 10, отличающийся тем, что характеристическая кривая (К) является переменной во времени.13. The method according to p. 1 or 10, characterized in that the characteristic curve (K) is variable in time. 14. Способ по п. 1, отличающийся тем, что его применяют для управления циркуляционным насосом системы отопления.14. The method according to p. 1, characterized in that it is used to control the circulation pump of the heating system. 15. Способ по п. 1, отличающийся тем, что снижение заданного напора насоса осуществляют путем уменьшения заданного значения15. The method according to p. 1, characterized in that the reduction of the set pressure of the pump is carried out by reducing the set value напора, непосредственно задаваемого насосу, или путем снижения характеристического заданного напора, определяющего характеристическую кривую.the pressure directly set to the pump, or by reducing the characteristic set pressure determining the characteristic curve. 16. Насос, приводимый в действие электродвигателем, с управляющей и регулирующей электроникой, который выполнен с возможностью осуществления способа по п. 1. 16. A pump driven by an electric motor, with control and regulation electronics, which is configured to implement the method according to claim 1.
RU2013137441/06A 2011-01-10 2012-01-02 Method for optimized output operation of the motor-driven pump at low volume flow rate RU2553630C2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102011008165.8 2011-01-10
DE102011008165A DE102011008165A1 (en) 2011-01-10 2011-01-10 Procedures for the performance-optimized operation of an electric motor-driven pump at low flow rates
PCT/EP2012/000001 WO2012095274A2 (en) 2011-01-10 2012-01-02 Method for operating a pump that is driven by an electric motor in a power-optimized manner in the event of low volumetric flow rates

Publications (2)

Publication Number Publication Date
RU2013137441A true RU2013137441A (en) 2015-02-20
RU2553630C2 RU2553630C2 (en) 2015-06-20

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EP (1) EP2663774B1 (en)
CN (1) CN103299076B (en)
DE (1) DE102011008165A1 (en)
RU (1) RU2553630C2 (en)
WO (1) WO2012095274A2 (en)

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Publication number Publication date
EP2663774A2 (en) 2013-11-20
CN103299076B (en) 2015-04-08
WO2012095274A2 (en) 2012-07-19
EP2663774B1 (en) 2016-03-30
WO2012095274A3 (en) 2013-05-02
CN103299076A (en) 2013-09-11
RU2553630C2 (en) 2015-06-20
DE102011008165A1 (en) 2012-07-12

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