FI112273B - Förfarande för reglering av matningsmängden hos en pump - Google Patents

Förfarande för reglering av matningsmängden hos en pump Download PDF

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Publication number
FI112273B
FI112273B FI20001643A FI20001643A FI112273B FI 112273 B FI112273 B FI 112273B FI 20001643 A FI20001643 A FI 20001643A FI 20001643 A FI20001643 A FI 20001643A FI 112273 B FI112273 B FI 112273B
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FI
Finland
Prior art keywords
power
motor
pressure
pump
temperature
Prior art date
Application number
FI20001643A
Other languages
English (en)
Finnish (fi)
Other versions
FI20001643A (sv
FI20001643A0 (sv
Inventor
Eik Sefeldt Moeller
Original Assignee
Danfoss Drives 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 Danfoss Drives As filed Critical Danfoss Drives As
Publication of FI20001643A0 publication Critical patent/FI20001643A0/sv
Publication of FI20001643A publication Critical patent/FI20001643A/sv
Application granted granted Critical
Publication of FI112273B publication Critical patent/FI112273B/sv

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Classifications

    • 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
    • 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
    • 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
    • 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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
    • G05D16/2066—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using controlling means acting on the pressure source
    • 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
    • F04B2203/0205—Temperature
    • 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
    • F04B2203/0208—Power
    • 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
    • F04B2203/0209—Rotational 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
    • F04B2205/00—Fluid parameters
    • F04B2205/05—Pressure after the pump outlet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/923—Specific feedback condition or device
    • Y10S388/934—Thermal condition

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Computer Hardware Design (AREA)
  • Fluid Mechanics (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Claims (5)

1. I »
1. Förfarande för regiering av matningsmängden (H; Q) i en pump som drivs med en med växelström avreglerbar frekvens, i synnerhet med en elektrisk motor som drivs via en ffekvensomvandlare, sä att som matningsmängdens nuvärde mäts 5 motoms matningskapacitet (P) och det regleras genom att jämföra det med ett bör-värde (Pson), kännetecknat av att da den i motom rädande temperaturen (T) föränd-ras beaktas motsvarande kompensationsvariabel (ΔΡ; ΔΗ; AR) vid regiering för att korrigera matningskapaciteten (P).
2. Förfarande enligt patentkrav 1, kännetecknat av att kompensationsvariabeln 10 (ΔΡ) hämtas beroende (figur 4) pä motortemperaturen frän en lagrad tabell innehäl- lande matningskapacitetens motorrelaterade förändrings- och temperaturvärden.
3. Förfarande enligt patentkrav 1, kännetecknat av att empiriskt uppställs och lagras en tabell, som innehäller förändringen av (ΔΗ) av pumpens tryck vid motoms olika matningskapaciteter (P) vid det ögonblick da motom när sin funktionstempe- 15 ratur, och att i tabellen hämtas tryckets förändring beroende pä matningskapacitetens (P) nuvärde (Pjst) för att fä kompensationsvariabeln under regleringen (figur 5).
4. Förfarande enligt patentkrav 1, kännetecknat av att pä kompensationsvariabeln (AR) och frekvensens styrvariabel (f) beräknas nuvärdet (na) för ett approxima- : ·. tivt varvtal, som används för att hämta börvärdet (Psoii) för matningskapaciteten som * · 20 relaterar tili tryckets börvärde (Hsoii) i den lagrade, empiriskt uppställda tabellen, "'! som innefattar värden (figur 6) beträffande motoms matningskapacitet (P) och varv tal (n).
5. Förfarande för regiering av matningsmängden (H; Q) i en pump som drivs :1 “: med en med växelström avreglerbar frekvens, i synnerhet med hjälp av en elektrisk 25 motor driven via en frekvensomvandlare, sä att för matningsmängdens nuvärde : v. mäts motoms matningskapacitet (P) och det regleras genom att jämföra det med , börvärdet (Pson), kännetecknat av att värdena beträffande motoms matningskapaci- ' I tet (P) och varvtal (n) uppställs empiriskt vid det förhandsinställda börvärdet (Hson) « j för tiycket och lagras som en tabell, och att under driften hämtas ett värde för mat- \30 ningskapaciteten (P) beträffande motorns varvtal (n; na) som uppmätts eller beräk-nats approximativt som börvärde (PS0n) för regiering av matningskapaciteten. >
FI20001643A 1999-07-12 2000-07-11 Förfarande för reglering av matningsmängden hos en pump FI112273B (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19931961 1999-07-12
DE19931961A DE19931961A1 (de) 1999-07-12 1999-07-12 Verfahren zur Regelung einer Fördergröße einer Pumpe

Publications (3)

Publication Number Publication Date
FI20001643A0 FI20001643A0 (sv) 2000-07-11
FI20001643A FI20001643A (sv) 2001-01-13
FI112273B true FI112273B (sv) 2003-11-14

Family

ID=7914161

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20001643A FI112273B (sv) 1999-07-12 2000-07-11 Förfarande för reglering av matningsmängden hos en pump

Country Status (5)

Country Link
US (1) US6354805B1 (sv)
CN (1) CN1179134C (sv)
DE (1) DE19931961A1 (sv)
FI (1) FI112273B (sv)
GB (1) GB2352533B (sv)

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Also Published As

Publication number Publication date
CN1280253A (zh) 2001-01-17
DE19931961A1 (de) 2001-02-01
CN1179134C (zh) 2004-12-08
FI20001643A (sv) 2001-01-13
FI20001643A0 (sv) 2000-07-11
GB0017061D0 (en) 2000-08-30
GB2352533A (en) 2001-01-31
US6354805B1 (en) 2002-03-12
GB2352533B (en) 2003-09-10

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