EP0844396A1 - Procédé de contrÔle d'une installation d'air comprimé avec plusieurs compresseurs - Google Patents

Procédé de contrÔle d'une installation d'air comprimé avec plusieurs compresseurs Download PDF

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Publication number
EP0844396A1
EP0844396A1 EP97120357A EP97120357A EP0844396A1 EP 0844396 A1 EP0844396 A1 EP 0844396A1 EP 97120357 A EP97120357 A EP 97120357A EP 97120357 A EP97120357 A EP 97120357A EP 0844396 A1 EP0844396 A1 EP 0844396A1
Authority
EP
European Patent Office
Prior art keywords
compressed air
compressors
pressure
volume
compressor
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.)
Withdrawn
Application number
EP97120357A
Other languages
German (de)
English (en)
Inventor
Rafael Dr. Weisz
Wolf Zolldann
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.)
Compair Mahle GmbH
Original Assignee
Compair Mahle GmbH
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 Compair Mahle GmbH filed Critical Compair Mahle GmbH
Publication of EP0844396A1 publication Critical patent/EP0844396A1/fr
Withdrawn legal-status Critical Current

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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
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/022—Stopping, starting, unloading or idling control by means of pressure
    • 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
    • F04B2205/063—Pressure in a (hydraulic) circuit in a reservoir linked to the pump outlet

Definitions

  • the invention relates to a method for controlling the operation one of which is driven in particular by an electric motor, compressed air station existing after several compressors Preamble of claim 1.
  • a control shows a basic solution for this the characterizing features of claim 1.
  • the invention is based on the following ideas.
  • the compressor station when it is in operation, should be in the compressed air network to be fed by it each for compressed air the consumer within one by one upper and one lower pressure limit as narrow a pressure range as possible provide.
  • the compressed air supply should be controlled so that initially with excess until is promoted to reach the upper pressure limit. After A correction should be made when the upper pressure limit is reached take place with the lowest possible pressure drop promoted until the lower pressure limit is reached becomes. If the lower pressure limit is reached, then again with a small excess of compressed air until the upper one is reached Pressure limit are promoted. In this way, that is due to a small surplus or a lack of funding
  • the compressed air is conveyed on the generated compressed air operated alternately between the two pressure limits. Through a flat course of an increase or decrease in pressure there should be a low switching frequency between the pressure limits the compressor drives can be reached.
  • the compressed air consumption can be determined relatively easily by detecting the pressure change per time. All that is required for this is a pressure sensor within the compressed air network, and a plurality of compressed air sensors can also be provided to avoid special influences. A practically continuous determination can be achieved by determining the compressed air changes in, for example, 2 to 5 second intervals. It is also possible to average the pressure change values over several time intervals.
  • the Pressure measurement is carried out at regular short intervals, while for the calculation of pressure development only at the beginning and end of one of several measuring intervals composite period values are used. In this way, the measurement can be smoothed on the one hand and on the other hand a measurement as close as possible to a control limit be performed.
  • the compressed air consumption is determined using an equation in which a quantity of the volume V N of the compressed air network is formed and this volume is different when the network changes (e.g. only a sub-area of the compressed air network is ready for operation), it can be advantageous to calculate the compressed air network volume as variable size in the tax process to be recorded and evaluated. This can be achieved by evaluating changes in the compressed air flow rate, each with the same consumption, several times in succession using the equation given above. In this way, the actual compressed air network volume can be taken into account using a simple computer program.
  • the absolute pressure in the compressed air network reaches a predetermined one Limit value, this always results in a pressure change signal generated.
  • the size of the pressure change signal depends on the existing signal generation Excess or shortage of compressed air.
  • the compressor station uses a computer, the value for the determined Compressed air surplus or bad demand in the operating system the compressor station an operating circuit of the individual Compressor selected, i.e. individual compressors switched on or off (partial load switching also possible) ), where a when the upper pressure limit is reached as little as possible promotion of deficit and when reached of the lower pressure limit, the lowest possible excess compressed air delivery delivered by the compressor station becomes.
  • the selection of the compressors to be switched on and off can be done via a given program. In any case can the individual compressors according to predetermined priorities commissioned, shutdown, at idle or Part load operation can be switched.
  • Electric motor-driven compressors in which a design-related run-on time after a last switch-on has not yet expired, usually not switched off, unless replacement compressors are ready for operation same performance data available in the compressor station stand.
  • it can be a circuit program provided for the operating circuit of the compressor station be at which when the lower pressure limit is reached, at a change signal is generated with the same power as the Available compressors each connected one becomes. This makes the switching frequency for everyone single compressor lower and there is a possibility to avoid design-related stopping times of the compressors.
  • the individual compressors can also be useful be the pressure change values over several determination periods to average in each case and only the average consider.
  • a compressor station with several individual compressors can each have several compressors with the same output to be available.
  • the same performance of individual compressors can also result from the fact that individual or all compressors can be operated with different load conditions can.
  • operational use can be more efficient or compressor with the same output in the given operating system of the compressor according to given Priorities are selected. For example, basically of compressors with the same performance the one to be put into operation first, the one longest downtime.
  • the priority can also provide that, for example, always first idle operated compressors on conveyor operation be switched before the compressor starts from standstill will.
  • the control according to the invention also makes it possible to depending on the given operating circuit system depending on the running time of a compressor Assignment of individual or equivalent services switch switched compressor. Thereby there will be an even load on all compressors Total operating time reached.
  • the control according to the invention also enables by evaluating the between the upper and lower Pressure changes measured pressure changes a so-called Trend calculation for the likely pressure curve carry out, which avoids unnecessary follow-up times can.
  • the trend calculations can be done in a way take place as in DE 32 37 251 C for the control of a Single compressor are specified.
  • a compressed air compressor station consists of a total of 1 6 compressors K1 to K6. These compressors can be used in promote a compressed air network consisting of pipes R and a Compressed air tank B exists. On the compressed air tank a pressure change measuring device PJ is installed, which forwards its measured values to a controller S.
  • the Control S connects the individual compressors K1 to K6 a predetermined program in such a way that in the invention Conveyed to the compressed air network R, B becomes.
  • the pressure within the compressed air network R, B is in each case between the pressure values P min. and P max. controlled by appropriate operating circuits of the compressors K1 to K6 in the compressor station.
  • the pressure curve between the individual pressure limit values which are denoted by A, B, C, E, G and I, is only influenced by changes in compressed air consumption with respect to changes in gradient. Such changes in the slope of the compressed air curve can be seen at points D, F and H.
  • the compressed air consumption increases, as a result of which the pressure curve with an increased tendency from point I to the lower pressure limit value P min. is approaching. Due to the increased compressed air consumption measured before point I, the control S performs an operating switchover in the compressor station and the compressors K2, K3, K4 and K5 are simultaneously switched to conveying mode.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
EP97120357A 1996-11-23 1997-11-20 Procédé de contrÔle d'une installation d'air comprimé avec plusieurs compresseurs Withdrawn EP0844396A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996148589 DE19648589A1 (de) 1996-11-23 1996-11-23 Verfahren zum Steuern des Betriebes einer aus mehreren Verdichtern bestehenden Druckluft-Verdichterstation
DE19648589 1996-11-23

Publications (1)

Publication Number Publication Date
EP0844396A1 true EP0844396A1 (fr) 1998-05-27

Family

ID=7812592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97120357A Withdrawn EP0844396A1 (fr) 1996-11-23 1997-11-20 Procédé de contrÔle d'une installation d'air comprimé avec plusieurs compresseurs

Country Status (2)

Country Link
EP (1) EP0844396A1 (fr)
DE (1) DE19648589A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1014042A5 (fr) * 2000-09-20 2003-03-04 Hitachi Ltd Systeme de compresseurs vis et son procede de fonctionnement.
DE10013098C2 (de) * 1999-04-14 2003-06-26 Hitachi Ltd Anlage zur Erzeugung von Druckluft
CN112412763A (zh) * 2020-10-09 2021-02-26 蘑菇物联技术（深圳）有限公司 一种云端控制的空压机协同作业方法、及其相关设备
CN114352511A (zh) * 2021-12-28 2022-04-15 南京尚爱机械制造有限公司 一种在空压机多机运行中减少空压机空载的方法
CN114635844A (zh) * 2022-05-20 2022-06-17 蘑菇物联技术（深圳）有限公司 用于控制空压站中的空压机的方法、设备和介质

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1083478B (de) * 1954-03-12 1960-06-15 Ernst August Hagenah Dr Regelung fuer Verdichteranlagen
DE2412296A1 (fr) * 1974-03-14 1975-08-28
DE3237251A1 (de) 1982-10-08 1984-04-12 Mahle Gmbh, 7000 Stuttgart Verfahren zur steuerung des betriebs eines verdichters
DE3500636A1 (de) * 1984-01-11 1985-07-18 Hitachi, Ltd., Tokio/Tokyo Verfahren zur steuerung des betriebes einer anzahl von kompressoren
US4951475A (en) * 1979-07-31 1990-08-28 Altech Controls Corp. Method and apparatus for controlling capacity of a multiple-stage cooling system
DE9200407U1 (de) * 1992-01-15 1993-05-27 Mtc Mikrotec GmbH Gesellschaft für Mikrocomputer Engineering, 7000 Stuttgart Kompressoranlage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE448490B (sv) * 1985-06-28 1987-02-23 Atlas Copco Ab Forfarande for reglering av trycket hos komprimerat medium levererat av en kompressoranleggning
DE4211191C2 (de) * 1992-04-03 1997-09-04 Mahle Gmbh Verfahren zur Steuerung des elektromotorischen Antriebs eines Verdichters

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1083478B (de) * 1954-03-12 1960-06-15 Ernst August Hagenah Dr Regelung fuer Verdichteranlagen
DE2412296A1 (fr) * 1974-03-14 1975-08-28
US4951475A (en) * 1979-07-31 1990-08-28 Altech Controls Corp. Method and apparatus for controlling capacity of a multiple-stage cooling system
DE3237251A1 (de) 1982-10-08 1984-04-12 Mahle Gmbh, 7000 Stuttgart Verfahren zur steuerung des betriebs eines verdichters
DE3500636A1 (de) * 1984-01-11 1985-07-18 Hitachi, Ltd., Tokio/Tokyo Verfahren zur steuerung des betriebes einer anzahl von kompressoren
DE9200407U1 (de) * 1992-01-15 1993-05-27 Mtc Mikrotec GmbH Gesellschaft für Mikrocomputer Engineering, 7000 Stuttgart Kompressoranlage

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10013098C2 (de) * 1999-04-14 2003-06-26 Hitachi Ltd Anlage zur Erzeugung von Druckluft
BE1014042A5 (fr) * 2000-09-20 2003-03-04 Hitachi Ltd Systeme de compresseurs vis et son procede de fonctionnement.
CN112412763A (zh) * 2020-10-09 2021-02-26 蘑菇物联技术（深圳）有限公司 一种云端控制的空压机协同作业方法、及其相关设备
CN114352511A (zh) * 2021-12-28 2022-04-15 南京尚爱机械制造有限公司 一种在空压机多机运行中减少空压机空载的方法
CN114352511B (zh) * 2021-12-28 2024-02-23 南京尚爱机械制造有限公司 一种在空压机多机运行中减少空压机空载的方法
CN114635844A (zh) * 2022-05-20 2022-06-17 蘑菇物联技术（深圳）有限公司 用于控制空压站中的空压机的方法、设备和介质
CN114635844B (zh) * 2022-05-20 2022-07-15 蘑菇物联技术（深圳）有限公司 用于控制空压站中的空压机的方法、设备和介质

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Publication number Publication date
DE19648589A1 (de) 1998-05-28

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