DE102012221953A1 - Internally-geared machine, particularly internal gear pump, has high-pressure region that is connected with low pressure region via compensation channel by using hydraulic compensating current flows, from which cross-flow is branched off - Google Patents
Internally-geared machine, particularly internal gear pump, has high-pressure region that is connected with low pressure region via compensation channel by using hydraulic compensating current flows, from which cross-flow is branched off Download PDFInfo
- Publication number
- DE102012221953A1 DE102012221953A1 DE201210221953 DE102012221953A DE102012221953A1 DE 102012221953 A1 DE102012221953 A1 DE 102012221953A1 DE 201210221953 DE201210221953 DE 201210221953 DE 102012221953 A DE102012221953 A DE 102012221953A DE 102012221953 A1 DE102012221953 A1 DE 102012221953A1
- Authority
- DE
- Germany
- Prior art keywords
- compensation
- pressure
- internal gear
- pressure region
- cross
- 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.)
- Pending
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Classifications
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/101—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with a crescent-shaped filler element, located between the inner and outer intermeshing members
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0007—Radial sealings for working fluid
- F04C15/0019—Radial sealing elements specially adapted for intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/086—Carter
-
- 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
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/16—Wear
- F04C2270/165—Controlled or regulated
-
- 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
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/52—Conditions after a throttle
-
- 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
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/58—Valve parameters
- F04C2270/585—Controlled or regulated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Innenzahnradmaschine, insbesondere Innenzahnradpumpe, mit einem Gehäuse, mit einem um eine erste Zahnradachse drehbaren außenverzahnten Ritzel, mit einem um eine zweite Zahnradachse drehbaren, mit dem Ritzel kämmenden innenverzahnten Hohlrad, das mit dem Ritzel einen sichelförmigen Arbeitsraum einschließt, mit einem annähernd halbsichelförmigen, in dem Arbeitsraum zwischen Ritzel und Hohlrad angeordneten Füllstück, dessen spitzes Ende sich auf einer ersten Seite einer durch die beiden Zahnradachsen aufgespannten Mittelebene befindet und das den sichelförmigen Arbeitsraum in einen mit einem Niederdruckanschluß verbundenen Niederdruckbereich und einen mit einem Hochdruckanschluß verbundenen Hochdruckbereich unterteilt, wobei das Füllstück zweiteilig ausgebildet ist und aus einem mit seiner Innenseite an den Zahnkranz des Ritzels gedrückten Segmentträger sowie einem an den Zahnköpfen des Hohlrads anliegenden Dichtsegment besteht und wobei zwischen dem Segmentträger und dem Dichtsegment eine gegenüber dem Arbeitsraum abgedichtete Kompensationskammer gebildet ist, die von einem gegenüber dem Druck des Hochdruckbereichs geringeren hydraulischen Kompensationsdruck beaufschlagt ist, mit einem Anschlagstift, an dem das Füllstück mit seinem breiten Ende anliegt. The invention relates to an internal gear machine, in particular internal gear pump, with a housing having a rotatable about a first gear axis externally toothed pinion, with a rotatable about a second gear axis, meshing with the pinion internally toothed ring gear, which includes a crescent-shaped working space with the pinion with an approximately semi-crescent, arranged in the working space between pinion and ring gear filler whose tip end is located on a first side of a spanned by the two gear axes center plane and dividing the crescent-shaped working space in a low pressure connected to a low-pressure port and a high pressure connected to a high pressure port wherein the filler is formed in two parts and consists of a pressed with its inside to the sprocket of the pinion segment carrier and a voltage applied to the tooth tips of the ring gear sealing segment and wob egg between the segment carrier and the sealing segment a sealed against the working space compensation chamber is formed, which is acted upon by a relation to the pressure of the high pressure area lower hydraulic compensation pressure, with a stop pin against which the filler with its wide end.
Bei einer derartigen Innenzahnradmaschine ist es bekannt, am Dichtsegment des Füllstücks eine Ausfräsung vorzusehen, durch die die Kompensationskammer mit einem Druckbereich des Hohlrades verbunden ist, in dem etwa der halbe Betriebsdruck herrscht. Durch diesen Kompensationsdruck wird das Dichtsegment dichtend gegen das Hohlrad gepreßt. Aufgrund von Leckagen fließ aus der Kompensationskammer im Inneren des Füllstücks Druckfluid ab. Der Kompensationsdruck in der Kompensationskammer ändert sich in Abhängigkeit von der Größe der Leckagen. Diese Leckagen sind von Verschleiß, Temperatur und Drehzahl der Innenzahnradmaschine anhängig, so daß der Kompensationsdruck nicht konstant ist. In such an internal gear machine, it is known to provide a cutout on the sealing segment of the filling piece, by means of which the compensation chamber is connected to a pressure region of the ring gear in which approximately half the operating pressure prevails. By this compensation pressure, the sealing segment is pressed sealingly against the ring gear. Due to leaks flow from the compensation chamber inside the filler pressure fluid from. The compensation pressure in the compensation chamber changes depending on the size of the leakages. These leaks are dependent on wear, temperature and speed of the internal gear machine, so that the compensation pressure is not constant.
Aufgabe der Erfindung ist es eine Innenzahnradmaschine der eingangs genannten Art zu schaffen, bei der unter allen Betriebsbedingungen der Kompensationsdruck in einem annähernd konstanten Verhältnis zum Betriebsdruck am Hochdruckanschluß steht. The object of the invention is to provide an internal gear machine of the type mentioned, in which under all operating conditions of the compensation pressure is in an approximately constant ratio to the operating pressure at the high pressure port.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Hochdruckbereich mit dem Niederdruckbereich durch einen Kompensationskanal verbunden ist, durch den ein hydraulischer Kompensationsstrom fließt, von dem ein Querstrom abzweigbar und zur Kompensationskammer leitbar ist und die Kompensationskammer mit diesem Kompensationsdruck beaufschlagt. This object is achieved in that the high-pressure region is connected to the low-pressure region through a compensation channel through which flows a hydraulic compensation current from which a cross-flow branchable and can be conducted to the compensation chamber and the compensation chamber subjected to this compensation pressure.
Dabei können in dem Kompensationskanal mindestens zwei Drosseln in Reihe angeordnet sein, wobei der Druck im Kompensationskanal zwischen zweien dieser Drosseln als Querstrom zur Kompensationskammer geleitet wird und als Kompensationsdruck die Kompensationskammer beaufschlagt. In this case, at least two throttles can be arranged in series in the compensation channel, wherein the pressure in the compensation channel between two of these throttles is passed as a cross-flow to the compensation chamber and acts as a compensation pressure to the compensation chamber.
Durch die Auslegung der Drosseln beträgt vorzugsweise das Volumen des Kompensationsstroms ein Mehrfaches des Volumens insbesondere annähernd das 3-fache bis 6-fache des Volumens des Querstroms um das annähernd konstante Verhältnis des Kompensationsdruckes zum Betriebsdruck am Hochdruckanschluß zu erreichen. Due to the design of the throttles is preferably the volume of the compensation current is a multiple of the volume in particular approximately 3 times to 6 times the volume of the cross flow to achieve the approximately constant ratio of the compensation pressure to the operating pressure at the high pressure port.
In einer anderen Ausgestaltung können in dem Kompensationskanal mindestens zwei Drosseln in Reihe angeordnet sein, wobei der Querstrom in Strömungsrichtung vor den Drosseln von dem Kompensationskanal abzweigt und über einen Druckregler zur Kompensationskammer geleitet wird und als Kompensationsdruck die Kompensationskammer beaufschlagt. In another embodiment, at least two throttles may be arranged in series in the compensation channel, wherein the transverse flow branches off in the flow direction upstream of the throttles of the compensation channel and is passed via a pressure regulator to the compensation chamber and acts as a compensation pressure to the compensation chamber.
Dadurch kann der Kompensationsstrom kleiner gewählt werden, wodurch der volumetrische Wirkungsgrad der Innenzahnradmaschine steigt. As a result, the compensation current can be made smaller, whereby the volumetric efficiency of the internal gear increases.
Vorzugsweise ist dabei der Druckregler ein Differenzdruckregler, der gegensinnig von dem Auslaßdruck des Differenzdruckreglers und dem Druck im Kompensationskanal zwischen zweien der Drosseln beaufschlagt ist. Preferably, the pressure regulator is a differential pressure regulator, which is acted upon in opposite directions by the outlet pressure of the differential pressure regulator and the pressure in the compensation channel between two of the throttles.
Um beispielsweise Fertigungstoleranzen ausgleichen zu können kann der Kompensationsdruck einstellbar sein, wozu wenigstens eine der Drosseln eine einstellbare Drossel ist. For example, to compensate for manufacturing tolerances, the compensation pressure can be adjusted, for which purpose at least one of the throttles is an adjustable throttle.
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher beschrieben. Es zeigen Embodiments of the invention are illustrated in the drawings and will be described in more detail below. Show it
Die in den
Der Zahnkranz des Ritzels
Das Hohlrad
Dieser Freiraum
An um 90 Grad zueinander versetzten Stellen münden in die Pumpenkammer
Das Hohlrad
Im Betrieb wird das Ritzel
Für einen hohen Wirkungsgrad der Innenzahnradpumpe ist zwischen dem Füllstück
Der Segmentträger
Der Segmentträger
Bei dem Ausführungsbeispiel der
Bei dem Ausführungsbeispiel der
Der Differenzdruckregler
Bei beiden Ausführungsbeispielen ist es möglich die erste Drossel
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1 1
- Mittelteil midsection
- 2 2
- Pumpenkammer pump chamber
- 3 3
- Antriebswelle drive shaft
- 4 4
- Ritzel pinion
- 5 5
- Zahnradachse gear axis
- 6 6
- Hohlrad ring gear
- 7 7
- Zahnradachse gear axis
- 8 8th
- Mittelebene midplane
- 9 9
- Freiraum free space
- 10 10
- Füllstück filling
- 11 11
- Abflachung flattening
- 12 12
- Anschlagstift stop pin
- 13 13
- NiederdruckanschlußLow pressure connection
- 14 14
- HochdruckanschlußHigh-pressure connection
- 15 15
- Fluiddurchlässe fluid passages
- 16 16
- Segmentträger segment carrier
- 17 17
- Dichtsegment sealing segment
- 18 18
- gestufte Bohrung stepped bore
- 19 19
- Stabfeder bar spring
- 20 20
- Blattfedern leaf springs
- 21 21
- Nut groove
- 22 22
- Nut groove
- 23 23
- Dichtrolle seal roller
- 24 24
- Kompensationskammer compensation chamber
- 25 25
- Kompensationskanal compensation channel
- 25’ 25 '
- Kompensationskanal compensation channel
- 26 26
- erste Drossel first throttle
- 26’ 26 '
- erste Drossel first throttle
- 27 27
- zweite Drossel second throttle
- 27’ 27 '
- zweite Drossel second throttle
- 28 28
- Querstromkanal Cross-flow channel
- 28’ 28 '
- Querstromkanal Cross-flow channel
- 29 29
- Differenzdruckregler Differential pressure regulator
- 30 30
- erste Steuerleitung first control line
- 31 31
- zweite Steuerleitungsecond control line
Claims (7)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210221953 DE102012221953A1 (en) | 2012-11-30 | 2012-11-30 | Internally-geared machine, particularly internal gear pump, has high-pressure region that is connected with low pressure region via compensation channel by using hydraulic compensating current flows, from which cross-flow is branched off |
CN201310629998.7A CN103850930B (en) | 2012-11-30 | 2013-12-02 | Internal gear machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210221953 DE102012221953A1 (en) | 2012-11-30 | 2012-11-30 | Internally-geared machine, particularly internal gear pump, has high-pressure region that is connected with low pressure region via compensation channel by using hydraulic compensating current flows, from which cross-flow is branched off |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102012221953A1 true DE102012221953A1 (en) | 2014-06-05 |
Family
ID=50725956
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201210221953 Pending DE102012221953A1 (en) | 2012-11-30 | 2012-11-30 | Internally-geared machine, particularly internal gear pump, has high-pressure region that is connected with low pressure region via compensation channel by using hydraulic compensating current flows, from which cross-flow is branched off |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN103850930B (en) |
DE (1) | DE102012221953A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016199061A3 (en) * | 2015-06-11 | 2017-02-02 | Turla S.R.L. | Stretching machine for non-ferrous metal profiles |
CN107676255A (en) * | 2017-10-20 | 2018-02-09 | 南京蒙福液压机械有限公司 | One kind has pressure compensated crescent gear pump |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3824041A (en) * | 1972-08-01 | 1974-07-16 | C Rystrom | Positive displacement liquid pump |
DE2760463C2 (en) * | 1976-07-27 | 1990-05-31 | Otto Sion Wallis Ch Eckerle | |
DE202011052114U1 (en) * | 2011-11-28 | 2012-02-28 | Eckerle Industrie-Elektronik Gmbh | Internal gear pump |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3907465A (en) * | 1974-08-29 | 1975-09-23 | Hydraulic Products Inc | Hydraulic power translating device |
CN1412439A (en) * | 2002-09-28 | 2003-04-23 | 宁波华液机器制造有限公司 | Internal gear pump |
CN201129295Y (en) * | 2007-08-17 | 2008-10-08 | 宁波高新协力机电液有限公司 | High pressure gear ring pump internal tooth ring static pressure unloading device |
CN100491729C (en) * | 2007-10-31 | 2009-05-27 | 宁波华液电液控制工程股份有限公司 | Inner gearing pump |
CN201437773U (en) * | 2009-05-07 | 2010-04-14 | 宁波威克斯液压有限公司 | Plug-in master and auxiliary vane pump |
-
2012
- 2012-11-30 DE DE201210221953 patent/DE102012221953A1/en active Pending
-
2013
- 2013-12-02 CN CN201310629998.7A patent/CN103850930B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3824041A (en) * | 1972-08-01 | 1974-07-16 | C Rystrom | Positive displacement liquid pump |
DE2760463C2 (en) * | 1976-07-27 | 1990-05-31 | Otto Sion Wallis Ch Eckerle | |
DE202011052114U1 (en) * | 2011-11-28 | 2012-02-28 | Eckerle Industrie-Elektronik Gmbh | Internal gear pump |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016199061A3 (en) * | 2015-06-11 | 2017-02-02 | Turla S.R.L. | Stretching machine for non-ferrous metal profiles |
CN107676255A (en) * | 2017-10-20 | 2018-02-09 | 南京蒙福液压机械有限公司 | One kind has pressure compensated crescent gear pump |
Also Published As
Publication number | Publication date |
---|---|
CN103850930B (en) | 2018-12-11 |
CN103850930A (en) | 2014-06-11 |
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