EP0692631A1 - Sleeve floating over the plunger of a high-pressure pump - Google Patents

Sleeve floating over the plunger of a high-pressure pump Download PDF

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Publication number
EP0692631A1
EP0692631A1 EP95106973A EP95106973A EP0692631A1 EP 0692631 A1 EP0692631 A1 EP 0692631A1 EP 95106973 A EP95106973 A EP 95106973A EP 95106973 A EP95106973 A EP 95106973A EP 0692631 A1 EP0692631 A1 EP 0692631A1
Authority
EP
European Patent Office
Prior art keywords
winding
sleeve
plunger
wire
steel
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Withdrawn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
EP95106973A
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German (de)
French (fr)
Inventor
Hermann Frye-Hammelmann
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.)
Paul Hammelmann Maschinenfabrik GmbH
Original Assignee
Paul Hammelmann Maschinenfabrik 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 Paul Hammelmann Maschinenfabrik GmbH filed Critical Paul Hammelmann Maschinenfabrik GmbH
Publication of EP0692631A1 publication Critical patent/EP0692631A1/en
Withdrawn legal-status Critical Current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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders

Definitions

  • the invention relates to a sleeve for a high-pressure plunger pump, preferably in the working range above 1,000 bar, the sleeve being floating on the plunger and delimiting the working space of the high-pressure plunger pump with the end face of the plunger.
  • a sleeve of this type is known (EP 0 464 165), in the cylindrical bore of which a sliding bush is arranged, in which the plunger moves back and forth.
  • the sleeve Since the sleeve, which is supported at the end facing the pump head on an insert body, limits the working area of the pump with the end face of the plunger and is enclosed by the suction space, the sleeve is subjected to changing loads during the suction and pressure stroke, which in particular in pumps, working in the high pressure or high pressure range, limit the life of the sleeve
  • the invention has for its object to design a sleeve of the type mentioned so that it can be exposed to the highest internal pressures in pump operation with changing pressure loads and manufactured inexpensively.
  • a sleeve which has a winding core provided with a continuous central bore and at the front ends with flange disks, in the winding space of which a prestressed wire made of metal, plastic or a fiber material is arranged in the winding space delimited by the flange disks.
  • the life of the sleeve can be increased considerably in that the pretension of the winding is equal to the working pressure acting in the interior of the sleeve during operation of the pump or greater than this working pressure.
  • the winding core can be made of ceramic, bronze or steel.
  • the high-pressure plunger pump shown in FIG. 1 essentially consists of a pump housing 1, a pump head 3 connected to the pump housing by screws 2, a suction valve 5 arranged coaxially to the cylinder axis 4 and a pressure valve 6, and a sleeve 8 floating on the plunger 7.
  • This sleeve has a winding core 9 and flange disks 10 and 12 arranged on the end faces.
  • the winding core 9 is provided with a continuous, central bore 13.
  • a winding 14 of a prestressed wire made of metal, plastic or a fiber material is arranged in the winding space delimited by the winding core and by the flange disks.
  • the bias of the winding 14 is equal to the working pressure acting in the interior of the sleeve 8 during operation of the high-pressure plunger pump or greater than this working pressure.
  • the winding core 9 of the sleeve can be made of ceramic, bronze or steel.
  • the winding wire 15 can be made of steel or carbon fibers.
  • the winding wire 15 made of steel can be a spring steel wire and have a diameter of 0.4 mm and a strength of 2,750 to 3,050 N / mm2.
  • the winding 14 is composed of several wire layers. For example, four to ten wire layers are provided.
  • the sleeve 8 is supported on the end facing the pump head 3 on an abutment surface 16 of an insert body 17. This abutting surface delimits a butt joint with the end face of the sleeve 8, which is overlapped by a sealing sleeve 18 inserted into the flow channel delimited by the sleeve 8 and the insert body 17.
  • the pump head 3 consists of the parts 19, 20, which are interconnected by screws 21.
  • a separation plane 22 extending at right angles to the cylinder axis 4 is provided between the parts 19, 20.
  • the part 20 of the pump head facing the housing 1 has a bearing surface 23 for an annular flange 24 of the insert body 17.
  • the insert body 17 is provided with suction channels, which extend from a valve seat surface of the plate-shaped suction valve body 5 to the lower boundary surface of the ring flange 24 and open into an annular channel 26 delimited by the insert body 17 and the part of the pump head 3 facing the housing 1.
  • a leakage channel 27 extends from the contact surface of the ring flange 24 to the suction chamber 28.
  • a negative pressure is generated in the cylindrical working chamber of the pump, so that the pumped medium can flow from the suction chamber 28 through the suction channels 25 into the working chamber of the pump when the suction valve body 5 is lifted off.
  • the suction valve body closes the suction channels 25 under spring action.
  • the conveyed medium flows through the channel 29 to the pressure valve 6, lifts the valve body 30 from the valve seat and reaches the channel 31 leading to the consumer.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

The floating sleeve (8) is supported by the plunger (7) of the high pressure pump, cooperating with the end face of the plunger for defining the pump working space. The sleeve has a winding core (9) with opposing end flanges defining a winding space, receiving a tensioned metal wire, plastics, or fibre winding (14) and a central bore in which the plunger is fitted. Pref. the tensioning of the winding is equal or greater than the pressure within the inner space of the sleeve when the high pressure pump is in operation. The winding core is pref. made of ceramics, bronze, or steel. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Hülse für eine Hochdruckplungerpumpe, vorzugsweise im Arbeitsbereich oberhalb 1.000 bar, wobei die Hülse auf dem Plunger schwimmend gelagert ist und mit der Stirnfläche des Plungers den Arbeitsraum der Hochdruckplungerpumpe begrenzt.The invention relates to a sleeve for a high-pressure plunger pump, preferably in the working range above 1,000 bar, the sleeve being floating on the plunger and delimiting the working space of the high-pressure plunger pump with the end face of the plunger.

Es ist eine Hülse dieser Art bekannt (EP 0 464 165), in deren zylindrischer Bohrung eine Gleitbuchse angeordnet ist, in der sich der Plunger hin und her bewegt.A sleeve of this type is known (EP 0 464 165), in the cylindrical bore of which a sliding bush is arranged, in which the plunger moves back and forth.

Da die Hülse, die sich an der dem Pumpenkopf zugewandten Ende an einem Einsatzkörper abstützt, mit der Stirnfläche des Plungers den Arbeitsraum der Pumpe begrenzt und vom Saugraum umschlossen ist, wird die Hülse beim Saug- und Druckhub wechselnden Belastungen unterworfen, die insbesondere bei Pumpen, die im Hochdruck- bzw. im Höchstdruckbereich arbeiten, die Lebensdauer der Hülse begrenzen.Since the sleeve, which is supported at the end facing the pump head on an insert body, limits the working area of the pump with the end face of the plunger and is enclosed by the suction space, the sleeve is subjected to changing loads during the suction and pressure stroke, which in particular in pumps, working in the high pressure or high pressure range, limit the life of the sleeve

Der Erfindung liegt die Aufgabe zugrunde, eine Hülse der eingangs genannten Art so zu gestalten, daß sie im Pumpenbetrieb bei wechselnden Druckbelastungen höchsten Innendrücken ausgesetzt und preisgünstig gefertigt werden kann.The invention has for its object to design a sleeve of the type mentioned so that it can be exposed to the highest internal pressures in pump operation with changing pressure loads and manufactured inexpensively.

Diese Aufgabe wird erfindungsgemäß durch eine Hülse gelöst, die einen mit einer durchgehenen mittigen Bohrung und an den Stirnenden mit Flanschscheiben versehenen Wickelkern aufweist, in dessen durch die Flanschscheiben stirnseitig begrenzten Wickelraum eine Wicklung eines vorgespannten Drahtes aus Metall, Kunststoff oder aus einem Fasermaterial angeordnet ist.This object is achieved according to the invention by a sleeve which has a winding core provided with a continuous central bore and at the front ends with flange disks, in the winding space of which a prestressed wire made of metal, plastic or a fiber material is arranged in the winding space delimited by the flange disks.

Die Lebensdauer der Hülse kann dadurch erheblich gesteigert werden, daß die Vorspannung der Wicklung gleich dem im Innenraum der Hülse im Betrieb der Pumpe wirkenden Arbeitsdruck oder größer als dieser Arbeitsdruck ist.The life of the sleeve can be increased considerably in that the pretension of the winding is equal to the working pressure acting in the interior of the sleeve during operation of the pump or greater than this working pressure.

Der Wickelkern kann aus Keramik, Bronze oder Stahl gefertigt sein.The winding core can be made of ceramic, bronze or steel.

Weitere Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further embodiments of the invention result from the subclaims.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgenden beschrieben.An embodiment of the invention is shown in the drawings and is described below.

Es zeigen:

Fig. 1
eine Hochdruckplungerpumpe im Längsschnitt`
Fig. 2
die Hülse nach der Fig. 1 in vergrößertem Maßstab und
Fig. 3
eine Teilvergrößerung, und zwar des Bereiches III, aus der Fig. 2.
Show it:
Fig. 1
a high-pressure plunger pump in longitudinal section`
Fig. 2
the sleeve of FIG. 1 on an enlarged scale and
Fig. 3
a partial enlargement of area III from FIG. 2.

Die in der Fig. 1 dargestellte Hochdruckplungerpumpe besteht im wesentlichen aus einem Pumpengehäuse 1, einem mit dem Pumpengehäuse durch Schrauben 2 verbundenen Pumpenkopf 3, einem koaxial zur Zylinderachse 4 angeordneten Saugventil 5 und einem Druckventil 6 sowie einer schwimmend auf dem Plunger 7 gelagerten Hülse 8. Diese Hülse weist einen Wickelkern 9 und an den Stirnseiten angeordnete Flanschscheiben 10 und 12 auf. Der Wickelkern 9 ist mit einer durchgehenden, mittigen Bohrung 13 versehen. In dem durch den Wickelkern und durch die Flanschscheiben begrenzten Wickelraum ist eine Wicklung 14 eines vorgespannten Drahtes aus Metall, Kunststoff oder einem Fasermaterial angeordnet.The high-pressure plunger pump shown in FIG. 1 essentially consists of a pump housing 1, a pump head 3 connected to the pump housing by screws 2, a suction valve 5 arranged coaxially to the cylinder axis 4 and a pressure valve 6, and a sleeve 8 floating on the plunger 7. This sleeve has a winding core 9 and flange disks 10 and 12 arranged on the end faces. The winding core 9 is provided with a continuous, central bore 13. A winding 14 of a prestressed wire made of metal, plastic or a fiber material is arranged in the winding space delimited by the winding core and by the flange disks.

Die Vorspannung der Wicklung 14 ist gleich dem im Innenraum der Hülse 8 im Betrieb der Hochdruckplungerpumpe wirkenden Arbeitsdruck oder größer als dieser Arbeitsdruck.The bias of the winding 14 is equal to the working pressure acting in the interior of the sleeve 8 during operation of the high-pressure plunger pump or greater than this working pressure.

Der Wickelkern 9 der Hülse kann aus Keramik, Bronze oder aus Stahl gefertigt werden.The winding core 9 of the sleeve can be made of ceramic, bronze or steel.

Der Wickeldraht 15 kann aus Stahl oder aus Kohlefasern bestehen.The winding wire 15 can be made of steel or carbon fibers.

Der aus Stahl gefertigte Wickeldraht 15 kann ein Federstahldraht sein und einen Durchmesser von 0,4 mm sowie eine Festigkeit von 2.750 bis 3.050 N/mm² aufweisen.The winding wire 15 made of steel can be a spring steel wire and have a diameter of 0.4 mm and a strength of 2,750 to 3,050 N / mm².

Die Wicklung 14 setzt sich aus mehreren Drahtlagen zusammen. Es können z.B. vier bis zehn Drahtlagen vorgesehen werden.The winding 14 is composed of several wire layers. For example, four to ten wire layers are provided.

Die Hülse 8 stützt sich an dem dem Pumpenkopf 3 zugewandten Ende an einer Stoßfläche 16 eines Einsatzkörpers 17 ab. Diese Stoßfläche begrenzt mit der Stirnfläche der Hülse 8 eine Stoßfuge, die durch eine in den von der Hülse 8 und dem Einsatzkörper 17 begrenzten Strömungskanal eingesetzte Dichtungshülse 18 überlappt wird.The sleeve 8 is supported on the end facing the pump head 3 on an abutment surface 16 of an insert body 17. This abutting surface delimits a butt joint with the end face of the sleeve 8, which is overlapped by a sealing sleeve 18 inserted into the flow channel delimited by the sleeve 8 and the insert body 17.

Aus der Fig. 1 ergibt sich, daß der Pumpenkopf 3 aus den Teilen 19,20 besteht, die untereinander durch Schrauben 21 verbunden sind. Zwischen den Teilen 19,20 ist eine rechtwinklig zur Zylinderachse 4 sich erstreckende Trennungsebene 22 vorgesehen. Der dem Gehäuse 1 zugewandte Teil 20 des Pumpenkopfes weist eine Auflagefläche 23 für einen Ringflansch 24 des Einsatzkörpers 17 auf. Der Einsatzkörper 17 ist mit Saugkanälen versehen, die sich von einer Ventilsitzfläche des plattenförmigen Saugventilkörpers 5 bis zur unteren Begrenzungsfläche des Ringflansches 24 erstrecken und in einen durch den Einsatzkörper 17 und dem dem Gehäuse 1 zugewandten Teil des Pumpenkopfes 3 begrenzten Ringkanal 26 einmünden.From Fig. 1 it follows that the pump head 3 consists of the parts 19, 20, which are interconnected by screws 21. A separation plane 22 extending at right angles to the cylinder axis 4 is provided between the parts 19, 20. The part 20 of the pump head facing the housing 1 has a bearing surface 23 for an annular flange 24 of the insert body 17. The insert body 17 is provided with suction channels, which extend from a valve seat surface of the plate-shaped suction valve body 5 to the lower boundary surface of the ring flange 24 and open into an annular channel 26 delimited by the insert body 17 and the part of the pump head 3 facing the housing 1.

Von der Auflagefläche des Ringflansches 24 erstreckt sich ein Leckagekanal 27 zum Saugraum 28.A leakage channel 27 extends from the contact surface of the ring flange 24 to the suction chamber 28.

Beim Saughub des Plungers 7 wird im zylindrischen Arbeitsraum der Pumpe ein Unterdruck erzeugt, so daß das Fördermedium aus dem Saugraum 28 durch die Saugkanäle 25 bei abgehobenem Saugventilkörper 5 in den Arbeitsraum der Pumpe strömen kann. Beim Druckhub verschließt der Saugventilkörper unter Federwirkung die Saugkanäle 25. Das Fördermedium strömt durch den Kanal 29 zum Druckventil 6, hebt den Ventilkörper 30 vom Ventilsitz ab und gelangt in den zum Verbraucher führenden Kanal 31.During the suction stroke of the plunger 7, a negative pressure is generated in the cylindrical working chamber of the pump, so that the pumped medium can flow from the suction chamber 28 through the suction channels 25 into the working chamber of the pump when the suction valve body 5 is lifted off. During the pressure stroke, the suction valve body closes the suction channels 25 under spring action. The conveyed medium flows through the channel 29 to the pressure valve 6, lifts the valve body 30 from the valve seat and reaches the channel 31 leading to the consumer.

BezugszeichenReference numerals

11
PumpengehäusePump housing
22nd
Schraubescrew
33rd
PumpenkopfPump head
44th
ZylinderachseCylinder axis
55
SaugventilSuction valve
66
DruckventilPressure valve
77
PlungerPlunger
88th
HülseSleeve
99
WickelkernWinding core
1010th
FlanschscheibeFlange washer
1111
1212th
FlanschscheibeFlange washer
1313
Bohrungdrilling
1414
WicklungWinding
1515
WickeldrahtWinding wire
1616
StoßflächeButt surface
1717th
EinsatzkörperInsert body
1818th
DichtungshülseSealing sleeve
1919th
Teilpart
2020th
Teilpart
2121
Schraubescrew
2222
TrennungsebeneSeparation level
2323
AuflageflächeContact surface
2424th
RingflanschRing flange
2525th
SaugkanalSuction channel
2626
RingkanalRing channel
2727
LeckagekanalLeakage channel
2828
SaugraumSuction chamber
2929
Kanalchannel
3030th
VentilkörperValve body
3131
Kanalchannel

Claims (6)

Hülse für eine Hochdruckplungerpumpe, vorzugsweise im Arbeitsbereich oberhalb 1.000 bar, wobei die Hülse auf dem Plunger schwimmend gelagert ist und mit der Stirnfläche des Plungers den Arbeitsraum der Hochdruckplungerpumpe begrenzt, gekennzeichnet durch einen mit einer durchgehenden mittigen Bohrung (13) und an den Stirnenden mit Flanschscheiben (10,12) versehenen Wickelkern (9), in dessen durch die Flanschscheiben stirnseitig begrenzten Wickelraum eine Wicklung (14) eines vorgespannten Drahtes aus Metall, Kunststoff oder aus einem Fasermaterial angeordnet ist.Sleeve for a high-pressure plunger pump, preferably in the working range above 1,000 bar, the sleeve being floating on the plunger and delimiting the working space of the high-pressure plunger pump with the end face of the plunger, characterized by a continuous central bore (13) and flange flanges at the ends (10,12) provided winding core (9), in the winding space delimited by the flange disks a winding (14) of a prestressed wire made of metal, plastic or a fiber material is arranged. Hülse nach Anspruch 1, dadurch gekennzeichnet, daß die Vorspannung der Wicklung (14) größer/gleich dem im Innenraum der Hülse (8) im Betrieb der Hochdruckplungerpumpe wirkenden Arbeitsdruck ist.Sleeve according to claim 1, characterized in that the pretension of the winding (14) is greater than / equal to the working pressure acting in the interior of the sleeve (8) when the high pressure plunger pump is operating. Hülse nach Anspruch 1, dadurch gekennzeichnet, daß der Wickelkern (9) aus Keramik, Bronze oder Stahl gefertigt ist.Sleeve according to claim 1, characterized in that the winding core (9) is made of ceramic, bronze or steel. Hülse nach Anspruch 1, dadurch gekennzeichnet, daß der Wickeldraht (15) aus Stahl oder Kohlefasern besteht.Sleeve according to claim 1, characterized in that the winding wire (15) consists of steel or carbon fibers. Hülse nach Anspruch 4, dadurch gekennzeichnet, daß der aus Stahl gefertigte Wickeldraht (15) ein Federstahldraht ist und einen Durchmesser von 0,4 mm sowie eine Festigkeit von 2.750 bis 3.050 N/mm² aufweist.Sleeve according to claim 4, characterized in that the winding wire (15) made of steel is a spring steel wire and has a diameter of 0.4 mm and a strength of 2,750 to 3,050 N / mm². Hülse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Wicklung (14) sich aus vier bis zehn Drahtlagen zusammensetzt.Sleeve according to one of the preceding claims, characterized in that the winding (14) is composed of four to ten wire layers.
EP95106973A 1994-07-12 1995-05-09 Sleeve floating over the plunger of a high-pressure pump Withdrawn EP0692631A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944424445 DE4424445A1 (en) 1994-07-12 1994-07-12 Sleeve floating on the plunger of a high pressure plunger pump
DE4424445 1994-07-12

Publications (1)

Publication Number Publication Date
EP0692631A1 true EP0692631A1 (en) 1996-01-17

Family

ID=6522871

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95106973A Withdrawn EP0692631A1 (en) 1994-07-12 1995-05-09 Sleeve floating over the plunger of a high-pressure pump

Country Status (3)

Country Link
EP (1) EP0692631A1 (en)
AU (1) AU2164595A (en)
DE (1) DE4424445A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2358569A1 (en) * 1976-07-12 1978-02-10 Hammelmann Paul High pressure plunger pump - has piston positioned on side of hollow plunger bore facing away from gas chamber
WO1991010830A1 (en) * 1990-01-18 1991-07-25 Paul Hammelmann Maschinenfabrik Gmbh Ultrahigh pressure plunger pump

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1130947B (en) * 1980-03-10 1986-06-18 De Dionigi Manlio IMPROVEMENTS TO ALTERNATIVE ELECTROMAGNETIC PUMPS IN PARTICULAR FOR NON-VISCOUS FLUIDS
DD254862A3 (en) * 1981-10-26 1988-03-16 Hanno Wenske COMPRESSION CHAMBER AND SEALING FOR HIGH PRESSURE GENERATORS
DE4038613C3 (en) * 1990-12-04 1998-09-17 Woma Maasberg Co Gmbh W Multi-cylinder high pressure plunger pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2358569A1 (en) * 1976-07-12 1978-02-10 Hammelmann Paul High pressure plunger pump - has piston positioned on side of hollow plunger bore facing away from gas chamber
WO1991010830A1 (en) * 1990-01-18 1991-07-25 Paul Hammelmann Maschinenfabrik Gmbh Ultrahigh pressure plunger pump
EP0464165A1 (en) * 1990-01-18 1992-01-08 Paul Hammelman Maschinenfabrik Ultrahigh pressure plunger pump.

Also Published As

Publication number Publication date
DE4424445A1 (en) 1996-01-18
AU2164595A (en) 1996-01-25

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