DE10005388A1 - Piston engine controlling process, involving measuring differential pressure in induction phase and opening induction valve at set differential pressure - Google Patents

Piston engine controlling process, involving measuring differential pressure in induction phase and opening induction valve at set differential pressure

Info

Publication number
DE10005388A1
DE10005388A1 DE2000105388 DE10005388A DE10005388A1 DE 10005388 A1 DE10005388 A1 DE 10005388A1 DE 2000105388 DE2000105388 DE 2000105388 DE 10005388 A DE10005388 A DE 10005388A DE 10005388 A1 DE10005388 A1 DE 10005388A1
Authority
DE
Germany
Prior art keywords
closing member
pressure
valve
differential pressure
suction
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Withdrawn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
DE2000105388
Other languages
German (de)
Inventor
Peter Rausch
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.)
Compart Compressor Technology GmbH
Original Assignee
Compart Compressor Technology 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 Compart Compressor Technology GmbH filed Critical Compart Compressor Technology GmbH
Priority to DE2000105388 priority Critical patent/DE10005388A1/en
Priority to EP01909560A priority patent/EP1165943A1/en
Priority to PCT/DE2001/000426 priority patent/WO2001059266A1/en
Publication of DE10005388A1 publication Critical patent/DE10005388A1/en
Withdrawn legal-status Critical Current

Links

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
    • F04B49/22—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 means of valves
    • F04B49/24—Bypassing
    • F04B49/243—Bypassing by keeping open the inlet valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
    • F01L7/06—Rotary or oscillatory slide valve-gear or valve arrangements with disc type 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/08—Actuation of distribution members
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/102—Adaptations or arrangements of distribution members the members being disc 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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/02—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated
    • F04B7/0266—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated the inlet and discharge means being separate members
    • 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
    • F04B2201/00—Pump parameters
    • F04B2201/06—Valve parameters
    • F04B2201/0601—Opening times
    • 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
    • F04B2205/02—Pressure in the inlet 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
    • F04B2205/03—Pressure in the compression 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
    • F04B2205/04—Pressure in the outlet chamber

Abstract

The controlling process involves measuring the differential pressure between the stroke induction pressure and the internal pressure in the cylinder. The induction valve is opened when the differential pressure reaches a preset valve and closed when it falls back to the same preset value.

Description

In Kolbenkompressoren werden überwiegend selbsttätig arbeitende, durch Druck­ differenzen gesteuerte Ventile eingesetzt.Piston compressors are mostly self-operated, due to pressure Difference-controlled valves are used.

Hauptbestandteile dieser Ventile sind grundsätzlich Ventilsitz und Fänger, ein oder mehrere Schließorgane, üblicherweise eine Platte oder Ringe, sowie Dämpfer- und Federorgane.The main components of these valves are basically the valve seat and catcher, one or several locking elements, usually a plate or rings, and damper and Spring organs.

Diese nicht unerhebliche Anzahl von Teilen werden bei jedem Zyklus des Kolbens in eine Hubbewegung versetzt, und je nach Hub der Schließorgane sowie des Mediums dyna­ misch stark belastet, was zu Beeinschränkungen der Standzeiten durch Brüche der Schließ-, Dämpfer und Federorgane führt.This not inconsiderable number of parts is divided into one during each cycle of the piston Stroke movement offset, and depending on the stroke of the closing elements and the medium dyna heavily mixed, which leads to restrictions in service life due to breaks in the Closing, damper and spring organs leads.

Weiterhin muß die Auslegung der Federorgane optimal auf einen Arbeitspunkt abgestimmt sein, was aber bei Änderungen des Prozesses, oder durch Drehzahlregelung zu Anpassungsproblemen führt, da es keine Möglichkeit zur Beeinflussung der Feder­ kräfte in den Ventilen gibt.Furthermore, the design of the spring elements must be optimal on one working point be coordinated, but what about changes in the process, or by speed control leads to adjustment problems since there is no way to influence the spring forces in the valves there.

Darüber hinaus werden die Ventile bei der Liefermengenregelung durch Staudruck oder Rückströmung über einen Abhebegreifer stark belastet.In addition, the valves are used to regulate the delivery quantity due to back pressure or reverse flow heavily loaded with a lifting gripper.

Nachteilig ist immer die große Anzahl der bewegten Elemente und deren Anfälligkeit sowie die durch den Hub des Ventils begrenzten Öffnungsquerschnitte.A disadvantage is always the large number of moving elements and their vulnerability as well the opening cross-sections limited by the stroke of the valve.

Zum Stand der Technik ist eine Vorrichtung und Verfahren nach EP 0 694 693 B1 bekannt, wobei aber das Ventil nur zur Liefermengenregelung über eine Hubbewegung auf einen Abhebegreifer beeinflußt wird.A device and method according to EP 0 694 693 B1 is known from the prior art, but with the valve only for delivery quantity control via a stroke movement on one Lifting hook is affected.

Der Erfindung liegt damit die Aufgabe zugrunde, eine Vorrichtung und Verfahren zur Regelung eines Arbeitsventils zu schaffen, sowie die Beeinflußung der Liefermenge so zu verbessern, daß die erwähnten Nachteile vermieden werden.The invention is therefore based on the object of a device and method for To create regulation of a work valve, as well as influencing the delivery quantity improve that the disadvantages mentioned are avoided.

Weiterhin kann das Ventil unabhängig von Prozeß- und Drehzahländerungen betrieben werden, da es keine nachteiligen Beeinflußungen durch Schließ-, Feder- und Dämpferele­ mente gibt.Furthermore, the valve can be operated independently of process and speed changes be, since there are no adverse influences by closing, spring and damper elements there are.

Erfindungsgemäß wird diese Aufgabe durch eine Vorrichtung mit den Merkmalen des Hauptanspruchs gelöst.According to the invention, this object is achieved by a device with the features of Main claim solved.

Die Erfindung betrifft eine Vorrichtung mit einem in Drehrichtung auf ein Schließ­ organ eines Ventils wirkenden Antriebsorgans, das über eine Einrichtung zur Steuerung der periodischen Drehbewegung des Schließorgans periodisch mit einem Druckmedium beaufschlagbar und entlastbar und/oder elektrisch betätigt ist, sowie ein Verfahren zur Regelung der Arbeitsventile.The invention relates to a device with a closing in the direction of rotation organ of a valve-acting drive element, which has a device for control the periodic rotary movement of the closing element periodically with a pressure medium acted upon and relieved and / or electrically operated, and a method for Regulation of the working valves.

Das Arbeitsventil beinhaltet nur ein Schließorgan was drehbar angeordnet ist, und deshalb keiner Hubbewegung bedarf.The working valve contains only one closing element which is rotatably arranged, and therefore no lifting movement is required.

Dadurch ist es im Gegensatz zu EP 0 694 693 B1 möglich, die Liefermenge nicht nur durch Rückströmung zu beeinflussen, sondern bereits den Ansaugvorgang zu unterbrechen, um somit den Volumenstrom zu bestimmen.In contrast to EP 0 694 693 B1, this makes it possible not only to deliver the quantity delivered Influence backflow, but already to interrupt the suction process  thus to determine the volume flow.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus nachfolgender Beschrei­ bung eines bevorzugten Ausführungsbeispieles anhand der beigefügten Zeichnungen. Dabei zeigt:Further features and advantages of the invention result from the following description Exercise of a preferred embodiment with reference to the accompanying drawings. It shows:

Fig. I eine schematische Ausführung der erfindungsgemäßen Vorrichtung Fig. I shows a schematic embodiment of the device according to the invention

Fig. II ein p-V Diagramm mit den Druckverläufen zur Erfassung der Differenzdrücke zwischen Stufensaug- und Zylinderinnendruck, sowie Stufenend- und Zylinder­ innendruck. Fig. II is a pV diagram with the pressure curves for detecting the differential pressures between the suction pressure and the internal cylinder pressure, as well as the final pressure and cylinder pressure.

Über die Druckerfassungseinheit (8) werden die Zylinderinnen- und Stufensaug-/ Stufenenddrücke durch Sensoren erfaßt. Der Kontroller (7) koordiniert den Arbeitszeit­ punkt des Ventils (1) und über die Steuereinheit (4) wird das Antriebsorgan (3) mittels Druckmittelquelle (5) und/oder Stromquelle (6) betätigt. Dadurch wird im Arbeitsventil (1) das Schließorgan (2) in eine Drehbewegung versetzt und öffnet oder schließt zum erforderlichen Zeitpunkt. Durch Änderung des Prozesses oder Drehhzahländerung des Verdichters wird die Erfassung der neuen Arbeitspunkte automatisch auf die Arbeits­ ventile übertragen.The cylinder internal and stage suction / stage end pressures are detected by sensors via the pressure detection unit ( 8 ). The controller ( 7 ) coordinates the working time of the valve ( 1 ) and the control unit ( 4 ) actuates the drive element ( 3 ) by means of a pressure medium source ( 5 ) and / or current source ( 6 ). As a result, the closing element ( 2 ) is rotated in the working valve ( 1 ) and opens or closes at the required time. By changing the process or changing the speed of the compressor, the acquisition of the new operating points is automatically transferred to the working valves.

Zur Liefermengenregelung wird das Saugventil (1) der erforderlichen Liefermenge entsprechend, früher geschlossen (Ansaugregelung) und somit die Zylinderfüllung unterbrochen. Desweiteren kann das Saugventil (1) nach Durchfahren des Kolbens über den unteren Totpunkt offengehalten werden, wodurch der Teil des Gases in die Sauglei­ tung zurückgeschoben wird, der nicht der erforderlichen Liefermenge entspricht (Rückströmregelung).To regulate the delivery quantity, the suction valve ( 1 ) is closed earlier (intake regulation) in accordance with the required delivery quantity, thus interrupting the cylinder filling. Furthermore, the suction valve ( 1 ) can be kept open after passing the piston past the bottom dead center, whereby the part of the gas is pushed back into the suction line that does not correspond to the required delivery quantity (backflow control).

In Fig. II Bild 1 ist der Druckverlauf für den Vollastbereich aufgezeichnet, wobei die Zahlen 1-4 die Zeitpunkte angeben, wo die Druckdifferenzen zu Null werden.In Fig. II image 1 of the pressure curve is recorded for the full-load range, wherein the numbers indicate the time points 1-4, where the pressure differentials become zero.

In Fig. II Bild 2 ist der Druckverlauf für den Teillastbereich aufgezeichnet, wobei das Volumen reduziert dargestellt ist. In Fig. II image 2 of the pressure curve is recorded for the partial load range, wherein the volume is shown reduced.

BezugszeichenlisteReference list

Aus Out

Fig.Fig.

I:
I:

11

Schnitt durch ein Arbeitsventil komplett (Vorderansicht)
Section through a working valve completely (front view)

22

Schließorgan
Locking device

33rd

Antriebsorgan
Drive member

44

Steuereinheit
Control unit

55

Druckmittelquelle
Pressure medium source

66

Stromquelle
Power source

77

Zentraleinheit
Central unit

88th

Druckerfassung
Pressure detection

99

Andruckstück
Pressure piece

1010th

Ventildeckel
Valve cover

Claims (5)

1. Vorrichtung mit zumindest einem in Drehrichtung auf ein Schließorgan (2) eines Ventils (1) einer Kolbenmaschine, insbesondere eines Kompressors oder einer Vakuumpumpe, wirkenden Antriebsorgans (3), das über eine Einrichtung (4) zur Steuerung der periodischen Drehbewegung des Schließorganes (2) periodisch mit einem Druckmedium be- und entlastbar und/oder elektrisch betätigt ist, dadurch gekennzeich­ net, daß das Antriebsorgan (3) periodisch schritt- und/oder schwenkweise über eine Steuereinheit (4) mittels einer vorgeschalteten Druckmittelquelle (5) und/oder Strom­ quelle (6) betätigt, eine Drehbewegung auf das Schließorgan (2) ausführt.1. Device with at least one drive member ( 3 ) acting in the direction of rotation on a closing member ( 2 ) of a valve ( 1 ) of a piston machine, in particular a compressor or a vacuum pump, which has a device ( 4 ) for controlling the periodic rotary movement of the closing member ( 2 ) periodically loaded and unloaded with a pressure medium and / or electrically actuated, characterized in that the drive member ( 3 ) periodically in steps and / or swiveling via a control unit ( 4 ) by means of an upstream pressure medium source ( 5 ) and / or Power source ( 6 ) actuated, performs a rotary movement on the closing member ( 2 ). 2. Verfahren zur Erfassung der Öffnungs- und/oder Schließzeitpunkte des Saug- und/oder Druckventils dadurch gekennzeichnet, daß durch Differenzdruckmessung des Stufensaugdruckes zum Zylinderinnendruck sowie des Stufenenddruckes zum Zylinder­ innendruck die Zeitpunkte ermittelt werden, bei denen die Druckdifferenzen gleich null sind.2. Method for detecting the opening and / or closing times of the suction and / or pressure valve, characterized in that by measuring the differential pressure of the Step suction pressure to the cylinder internal pressure as well as the step end pressure to the cylinder the times at which the pressure differences are equal to zero are determined are. 3. Verfahren nach Anspruch 1 zur Ansaugregelung eines Kolbenverdichters durch Schließen zumindest eines Saugventils (1) über zumindest einen Teilbereich des Ansaughubes mittels Drehbewegung des Schließorgans (2) dadurch gekennzeichnet, daß am Ende des jeweils periodisch offengehaltenen Teilbereiches durch Drehbewegung des Schließorgans (2) der Ansaugprozeß unterbrochen wird.3. The method according to claim 1 for suction control of a piston compressor by closing at least one suction valve ( 1 ) over at least a portion of the intake stroke by means of rotary movement of the closing member ( 2 ), characterized in that at the end of the periodically kept open portion by rotating the closing member ( 2 ) Intake process is interrupted. 4. Verfahren nach Anspruch 1 zur Rückströmregelung eines Kolbenverdichters durch Offenhalten zumindest eines Saugventils (1) über zumindest einen Teilbereich des Verdichtungshubes mittels Drehbewegung des Schließorgans (2) dadurch gekennzeich­ net, daß am Ende des jeweils periodisch offengehaltenen Teilbereiches durch Drehbewe­ gung des Schließorgans (2) der Verdichtungsprozeß eingeleitet wird.4. The method according to claim 1 for backflow control of a piston compressor by keeping open at least one suction valve ( 1 ) over at least a portion of the compression stroke by means of rotary movement of the closing member ( 2 ), characterized in that at the end of the periodically kept open portion by rotary movement of the closing member ( 2nd ) the compression process is initiated. 5. Arbeitsventil (1) mit einem drehbaren Schließorgan (2) dadurch gekennzeich­ net, daß das Schließorgan (2) durch eine Vorrichtung nach Anspruch 1 bewegt, und durch Verfahren nach Anspruch 2, 3 und 4 geregelt wird.5. Working valve ( 1 ) with a rotatable closing member ( 2 ) characterized in that the closing member ( 2 ) is moved by a device according to claim 1, and is regulated by methods according to claim 2, 3 and 4.
DE2000105388 2000-02-07 2000-02-07 Piston engine controlling process, involving measuring differential pressure in induction phase and opening induction valve at set differential pressure Withdrawn DE10005388A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE2000105388 DE10005388A1 (en) 2000-02-07 2000-02-07 Piston engine controlling process, involving measuring differential pressure in induction phase and opening induction valve at set differential pressure
EP01909560A EP1165943A1 (en) 2000-02-07 2001-02-03 Rotary valve
PCT/DE2001/000426 WO2001059266A1 (en) 2000-02-07 2001-02-03 Device and method for controlling a piston engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2000105388 DE10005388A1 (en) 2000-02-07 2000-02-07 Piston engine controlling process, involving measuring differential pressure in induction phase and opening induction valve at set differential pressure

Publications (1)

Publication Number Publication Date
DE10005388A1 true DE10005388A1 (en) 2001-09-20

Family

ID=7630131

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2000105388 Withdrawn DE10005388A1 (en) 2000-02-07 2000-02-07 Piston engine controlling process, involving measuring differential pressure in induction phase and opening induction valve at set differential pressure

Country Status (3)

Country Link
EP (1) EP1165943A1 (en)
DE (1) DE10005388A1 (en)
WO (1) WO2001059266A1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
US7331767B2 (en) 2002-09-19 2008-02-19 Hoerbiger Kompressortechnik Services Gmbh Method of stepless capacity control of a reciprocating piston compressor and piston compressor with such control

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US8740183B2 (en) 2007-10-18 2014-06-03 Burckhardt Compression Ag Actively controlled valve and method for operating an actively controlled valve
US10697445B2 (en) 2017-03-27 2020-06-30 Burckhardt Compression Ag Valve closure for a piston compressor valve and method for operating the valve closure
EP3601799B1 (en) 2017-03-27 2023-01-11 Burckhardt Compression AG Piston compressor valve and method for operating same
KR102638478B1 (en) 2017-07-10 2024-02-19 부르크하르트 콤프레션 아게 Method and apparatus for expanding gas with a reciprocating piston machine
CN115847759A (en) * 2023-03-02 2023-03-28 河南君源塑业有限公司 PVC board hot melt extrusion moulding device of convenient online adjustment panel thickness

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DE3400970A1 (en) * 1984-01-13 1984-08-02 Kurt 6052 Mühlheim Schirock Electronic valve controller having a pulse transmitter for four-stroke internal-combustion engines
DE4002856A1 (en) * 1990-02-01 1991-08-08 Bayerische Motoren Werke Ag Valve for IC engine - has variable-timing hydraulic control with inner and outer rotatable sleeves

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7331767B2 (en) 2002-09-19 2008-02-19 Hoerbiger Kompressortechnik Services Gmbh Method of stepless capacity control of a reciprocating piston compressor and piston compressor with such control

Also Published As

Publication number Publication date
EP1165943A1 (en) 2002-01-02
WO2001059266A1 (en) 2001-08-16

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