EP0155581A2 - End cover for a turbo machine - Google Patents

End cover for a turbo machine Download PDF

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Publication number
EP0155581A2
EP0155581A2 EP85102392A EP85102392A EP0155581A2 EP 0155581 A2 EP0155581 A2 EP 0155581A2 EP 85102392 A EP85102392 A EP 85102392A EP 85102392 A EP85102392 A EP 85102392A EP 0155581 A2 EP0155581 A2 EP 0155581A2
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EP
European Patent Office
Prior art keywords
housing
cover
teeth
pressure cover
pressure
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.)
Granted
Application number
EP85102392A
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German (de)
French (fr)
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EP0155581B1 (en
EP0155581A3 (en
Inventor
Stephen Medgyesy
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Sulzer AG
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Sulzer AG
Gebrueder Sulzer AG
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Publication date
Application filed by Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of EP0155581A2 publication Critical patent/EP0155581A2/en
Publication of EP0155581A3 publication Critical patent/EP0155581A3/en
Application granted granted Critical
Publication of EP0155581B1 publication Critical patent/EP0155581B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F01D25/26—Double casings; Measures against temperature strain in casings
    • F01D25/265—Vertically split casings; Clamping arrangements therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • F04D1/063—Multi-stage pumps of the vertically split casing type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/086—Sealings especially adapted for liquid pumps

Definitions

  • the invention relates to a pot housing for a turbomachine, which is closed at the end with a pressure cover, elastic sealing elements sealing the interior of the pump in the separating gap between the housing and cover from the environment; Pot housings of the type mentioned are preferably used in high-pressure pumps and compressors as well as turbines with axial and radial blading.
  • the housing or pressure covers which usually seal such pump housings from the drive end, are provided with a flange and fastened to the housing with the help of large expansion screws - and possibly nuts.
  • Elastic flat seals or O-rings which are arranged between the cover and the housing, serve as sealing elements for sealing the pump pressure to the outside (CH-PS 562 405).
  • the object of the invention is therefore to provide a simple, light and space-saving construction for the cover and housing, in which the seals can be replaced without removing the cover.
  • the end of the pot housing receiving the pressure cover has a radially inwardly projecting toothing in its opening for the insertion of the pump and the pressure cover corresponding in diameter to the inside width of the housing toothing has a radially outwardly directed toothing, whereby the arrangement of the teeth in the circumferential direction and their dimensions enable the cover to be inserted into the housing, and in addition that a flange ring enclosing the pressure cover is fastened on the end face of the housing with the interposition of elastic sealing elements; the sealing elements, which each form a radial and an axial seal in the example shown, consist, for example, of elastomeric O-rings or metallic C-rings, as well as flange or spiral seals of a known type.
  • axial through bores in the housing toothing for the disassembly of the housing and cover enable the teeth of the pressure cover and housing, which are resting on one another and possibly firmly connected to one another, to be separated from one another by means of a hydraulic pressure medium before they are rotated against one another to open them.
  • the pot housing 1 (FIG. 1) accommodates a stage housing 5 and the stator 6 of the last stage. It is closed to the right in FIG. 1 by a housing or pressure cover 7, into which a pressure compensation line 8 opens.
  • a relief bushing 9 surrounding the relief piston 4 is accommodated in the inner cavity of the pressure cover 7 near the shaft, and a mechanical seal 10 is shown schematically.
  • the edge of the inner cavity 11 of the housing 1 is provided with a toothing projecting radially inwards, the teeth 12 of which are evenly distributed over the circumference and are arranged at a distance from one another.
  • Every second tooth 12 is provided with a bore 13 located eccentrically in it; As already mentioned, this serves to connect a pressure line of a hydraulic system (not shown), with the aid of which the teeth 12 are lifted from the teeth 14 (FIG.
  • the teeth 14 are distributed radially outward and projecting on the outer circumference of the pressure cover, the diameter of which corresponds to the inside width of the housing teeth.
  • the shape and position of the teeth 12 and 14 are matched to one another such that the teeth 14 of the pressure cover 7 between the teeth 12 are inserted into the housing and after loosening the pressure cover 7 from the stator 5, 6 by a rotation - in the present example by / 8 - are fixed behind them.
  • Through bores 15 are also provided in the teeth 14, through which screw bolts 16 (FIG. 1) reach when an assembly of rotor 2, 3, 4, stator 5, 6, 9 and pressure cover 7 results in an insertion unit.
  • screw bolts 16 FIG. 1
  • these are screwed into tabs 17 provided with threaded holes 18 on the stator 6 of the last stage.
  • these screws 16 are loosened before the teeth 12 and 14 are brought into engagement with one another by the aforementioned rotation after the insertion of the unit.
  • a positioning pin 25 which (FIG. 2) engages in a bore 24 / in the housing end face and the correct position for the flange ring 21 relative to the housing 1 ensures; the adjustment of the pressure cover 7 relative to the flange ring 21 is then carried out by an adjusting wedge 26 which is inserted into corresponding recesses in these two elements.

Abstract

Der Druckdeckel (7) hat eine radial nach aussen gerichtete Verzahnung (14); eine entsprechende Gegenverzahnung (12) ragt in den Innenhohlraum (11) des Gehäuses (1). Zum Verschliessen des Gehäuses (1) wird der Deckel (7) in das Gehäuse (1) eingeschoben und um einen Winkel verdreht, wodurch die Verzahnungen (12, 14) miteinander in Eingriff gebracht werden. Die Dichtelemente (20) werden erst nach dam Einschub des Druckdeckels (7) eingesetzt und durch einen auf dem Gehäuse (1) besfestigten separaten Flanschring (21) gehalten. Die einfache Konstrucktion erfordert für Deckel (7) und Gehäuse (1) kleinere Abmessungen als bisher; darüberhinaus sind die Dichtelemente (20) ersetzbar, ohne dass der Deckel (7) gelöst werden muss.The pressure cover (7) has a toothing (14) directed radially outwards; a corresponding counter toothing (12) protrudes into the inner cavity (11) of the housing (1). To close the housing (1), the cover (7) is pushed into the housing (1) and rotated through an angle, as a result of which the toothings (12, 14) are brought into engagement with one another. The sealing elements (20) are only inserted after the pressure cover (7) has been pushed in and are held by a separate flange ring (21) secured to the housing (1). The simple design requires smaller dimensions for the cover (7) and housing (1) than before; moreover, the sealing elements (20) can be replaced without having to loosen the cover (7).

Description

Die Erfindung betrifft ein Topfgehäuse für eine Turbomaschine, das stirnseitig mit einem Druckdeckel verschlossen ist, wobei elastische Dichtelemente den Innenraum der Pumpe im Trennspalt zwischen Gehäuse und Deckel gegen die Umgebung abdichten; Topfgehäuse der genannten Art werden vorzugsweise bei Hochdruckpumpen und -kompressoren sowie Turbinen mit axialer und radialer Beschaufelung eingesetzt.The invention relates to a pot housing for a turbomachine, which is closed at the end with a pressure cover, elastic sealing elements sealing the interior of the pump in the separating gap between the housing and cover from the environment; Pot housings of the type mentioned are preferably used in high-pressure pumps and compressors as well as turbines with axial and radial blading.

Bei einer Art bekannter Konstruktionen sind die Gehäuse- bzw. Druckdeckel, die derartige Pumpengehäuse meist vom Antrieb her stirnseitig abschliessen, mit einem Flansch versehen und mit Hilfe von grossen Dehnschrauben - und unter Umständen Muttern - am Gehäuse befestigt. Als Dichtelemente für die Abdichtung des Pumpendruckes gegen aussen dienen dabei elastische Flachdichtungen oder O-Ringe, die zwischen dem Deckel und dem Gehäuse angeordnet sind (CH-PS 562 405). Diese Konstruktionen erfordern für die Aufnahme der Dehnschrauben ausladende Flansche am Gehäusedeckel und entsprechend ein relativ grosses Gehäuse; für eine Auswechslung der Dichtungen ist darüberhinaus eine Demontage des ganzen Deckels erforderlich.In one type of known construction, the housing or pressure covers, which usually seal such pump housings from the drive end, are provided with a flange and fastened to the housing with the help of large expansion screws - and possibly nuts. Elastic flat seals or O-rings, which are arranged between the cover and the housing, serve as sealing elements for sealing the pump pressure to the outside (CH-PS 562 405). These constructions require flanges on the housing cover to protrude the expansion screws and, accordingly, a relatively large housing; To replace the seals, the entire cover must also be removed.

(Hitachi Review, Vo. 30 (1981), No. 6, Seite 6, Fig. 2) Bei anderen Konstruktionen/wird der mit radialen O-Ringen ausgestattete Gehäusedeckel in Achsrichtung in das Gehäuse eingeschoben und durch in Umfangsrichtung geteilte Scherringe gehalten. Diese Scherringe werden ihrerseits durch eine am Gehäuse befestigte Halterung fixiert, die auch mit dem Gehäusedeckel verschraubt ist. Diese Konstruktion ist sehr kompliziert und erfordert - beispielsweise zur Auswechslung der O-Ringe - einen erheblichen Aufwand für die Demontage und Remontage. Darüberhinaus sind die radialen O-Ringe beim Einschieben des Gehäusedeckels in das Gehäuse einer erheblichen Gefahr der Beschädigung ausgesetzt.(Hitachi Review, Vo. 30 (1981), No. 6, page 6, Fig. 2) In other constructions / the housing cover equipped with radial O-rings is pushed into the housing in the axial direction and held by shear rings divided in the circumferential direction. These shear rings are in turn fixed by a bracket attached to the housing, which is also screwed to the housing cover. This construction is very complicated and requires - for example, for the end changing the O-rings - considerable effort for disassembly and reassembly. In addition, the radial O-rings are exposed to a considerable risk of damage when the housing cover is pushed into the housing.

Aufgabe der Erfindung ist es daher, eine einfache, leichte und platzsparende Konstruktion für Deckel und Gehäuse zu schaffen, bei der ein Ersetzen der Dichtungen ohne Demontage des Deckels möglich ist.The object of the invention is therefore to provide a simple, light and space-saving construction for the cover and housing, in which the seals can be replaced without removing the cover.

Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass die den Druckdeckel aufnehmende Stirnseite des Topfgehäuses in ihrer Oeffnung für den Einschub der Pumpe eine radial nach innen ragende Verzahnung und der in seinem Durchmesser der lichten Weite der Gehäuseverzahnung entsprechende Druckdeckel eine radial nach aussen gerichtete Verzahnung tragen, wobei die Anordnung der Zähne in Umfangsrichtung und ihre Abmessungen ein Einführen des Deckels in das Gehäuse ermöglichen, und dass ferner auf der Stirnseite des Gehäuses unter Zwischenlage elastischen Dichtelementen ein den Druckdeckel umschliessender Flanschring befestigt ist; die Dichtelemente, die in dem gezeigten Beispiel je eine radiale und eine axiale Dichtung bilden, bestehen bei spielsweise aus elastomeren O-Ringen oder metallischen C-Ringen, sowie Flansch- oder Spiraldichtungen bekannter Bauart.This object is achieved according to the invention in that the end of the pot housing receiving the pressure cover has a radially inwardly projecting toothing in its opening for the insertion of the pump and the pressure cover corresponding in diameter to the inside width of the housing toothing has a radially outwardly directed toothing, whereby the arrangement of the teeth in the circumferential direction and their dimensions enable the cover to be inserted into the housing, and in addition that a flange ring enclosing the pressure cover is fastened on the end face of the housing with the interposition of elastic sealing elements; the sealing elements, which each form a radial and an axial seal in the example shown, consist, for example, of elastomeric O-rings or metallic C-rings, as well as flange or spiral seals of a known type.

Bei der neuen Konstruktion, bei der die Zähne des Gehäuses und diejenigen des Deckels durch eine Drehung des Druckdeckels "zur Deckung gebracht" werden, wird der hydraulische Druck durch diese Zahnverbindung aufgenommen; die Abdichtung des Pumpendruckes erfolgt durch radiale und axiale O-Ringe, die erst nach dem Einschub der aus Rotor, Stator und Gehäusedeckel bestehenden Einschubeinheit und nach der vorstehend erwähnten Drehung des Deckels montiert und von einem Flanschring gehalten werden. Zum einen können daher bei der neuen Konstruktion ausladende Flansche und grosse Dehnschrauben entfallen, wodurch der Druckdeckel und das Gehäuse kleiner als bisher ausgeführt werden können. Zum anderen ist die Gefahr einer Beschädigung der Dichtringe praktisch ausgeschaltet. Darüberhinaus erfordert ein Einsetzen der Dichtung bei Leckagen keinen Ausbau des Gehäusedeckels mehr.In the new design, in which the teeth of the housing and those of the cover are "brought into register" by rotating the pressure cover, the hydraulic pressure is absorbed by this tooth connection; the pump pressure is sealed by radial and axial O-rings, which are mounted and held by a flange ring only after the slide-in unit consisting of rotor, stator and housing cover has been inserted and after the aforementioned rotation of the cover. On the one hand, with the new design, protruding flanges and large expansion bolts can be omitted, which means that the pressure cover and the housing can be made smaller than before. On the other hand, the risk of damage to the sealing rings is practically eliminated. In addition, inserting the seal in the event of leakage no longer requires removal of the housing cover.

Werden mindestens einzelne Zähne des Druckdeckels mit axialen Durchgangsbohrungen versehen, so kann man mit Hilfe von durch diese Bohrungen hindurch im Stator der Pumpe verschraubte Bolzen den Zusammenbau von Rotor, Stator und Druckdeckel zu einer Einschubeinheit erleichtern.If at least individual teeth of the pressure cover are provided with axial through bores, bolts which are screwed through these bores in the stator of the pump can facilitate the assembly of the rotor, stator and pressure cover to form a slide-in unit.

Weiterhin ermöglichen axiale Durchgangsbohrungen in der Gehäuseverzahnung für die Demontage von Gehäuse und Deckel die aufeinander aufliegenden und gegebenenfalls fest miteinander verbundenen Zähne von Druckdeckel und Gehäuse mittels eines hydraulischen Druckmittels voneinander zu lösen, ehe sie zum Oeffnen gegeneinander verdreht-werden.Furthermore, axial through bores in the housing toothing for the disassembly of the housing and cover enable the teeth of the pressure cover and housing, which are resting on one another and possibly firmly connected to one another, to be separated from one another by means of a hydraulic pressure medium before they are rotated against one another to open them.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels im Zusammenhang mit der Zeichnung näher erläutert.

  • Fig. 1 zeigt in schematischer Darstellung als Schnitt in einer Meridianebene im Bereich des Gehäuse-oder Druckdeckels einen Ausschnitt aus dem im wesentlichen zylindrischen Topfgehäuse einer Hochdruck-Kreiselpumpe;
  • Fig. 2 ist eine Aufsicht auf das Zylindergehäuse der Fig. 1 von rechts bei ausgebauter Einschubeinheit;
  • Fig. 3 stellt in Gegenrichtung zu Fig. 2 eine Aufsicht auf den Druckdeckel von links bei "abgenommenem" Leit- und Laufrad dar.
The invention is explained in more detail below using an exemplary embodiment in conjunction with the drawing.
  • 1 shows a schematic representation as a section in a meridian plane in the area of the housing or pressure cover, a section of the essentially cylindrical pot housing of a high-pressure centrifugal pump;
  • FIG. 2 is a top view of the cylinder housing of FIG. 1 from the right with the withdrawable unit removed;
  • Fig. 3 represents in the opposite direction to Fig. 2 is a plan view of the pressure cover from the left with "removed" idler and impeller.

Das Topfgehäuse 1 (Fig. l) nimmt neben der Welle 2, auf der eines der Laufräder 3 und ein Druckentlastungskolben 4 befestigt sind, ein Stufengehäuse 5 und das Leitrad 6 der letzten Stufe auf. Es ist in Fig. 1 nach rechts durch einen Gehäuse- oder Druckdeckel 7 abgeschlossen, in den ein Druckausgleichsleitung 8 einmündet. Im wellennahen Innenhohlraum des Druckdeckels 7 ist eine den Entlastungskolben 4 umgebende Entlastungsbuchse 9 untergebracht sowie eine Gleitringdichtung 10 schematisch wiedergegeben.In addition to the shaft 2, on which one of the impellers 3 and a pressure relief piston 4 are fastened, the pot housing 1 (FIG. 1) accommodates a stage housing 5 and the stator 6 of the last stage. It is closed to the right in FIG. 1 by a housing or pressure cover 7, into which a pressure compensation line 8 opens. A relief bushing 9 surrounding the relief piston 4 is accommodated in the inner cavity of the pressure cover 7 near the shaft, and a mechanical seal 10 is shown schematically.

Wie Fig. 2 zeigt, ist im Bereich des offenen Gehäuseendes der Rand des Innenhohlraums 11 des Gehäuses 1 mit einer radial nach innen ragenden Verzahnung versehen, deren Zähne 12 gleichmässig auf dem Umfang verteilt und in Abstand zueinander angeordnet sind. Jeder zweite Zahn 12 ist mit einer in ihm exzentrisch gelegenen Bohrung 13 versehen; diese dient, wie bereits erwähnt, zum Anschluss einer Druckleitung eines nicht dargestellten hydraulischen Systems,mit dessen Hilfe die Zähne 12 von den im montierten Zustand dahinterliegenden Zähnen 14 (Fig. 3) des Druckdeckels 7 bei einer Demontage abgehoben werden, wofür, wie aus Fig. 1 ersichtlich, zwischen dem Deckel 7 und dem Stufengehäuse 5 bzw. dem Leitrad 6 ein axiales Spiel vorhanden ist, das bei der Montage wirksam wird und ein Drehen des Druckdeckels 7 im Topfgehäuse ohne axiale Kräfte und ohne axialer Verschiebungen bei diesem Drehen erlaubt.As shown in FIG. 2, in the region of the open housing end, the edge of the inner cavity 11 of the housing 1 is provided with a toothing projecting radially inwards, the teeth 12 of which are evenly distributed over the circumference and are arranged at a distance from one another. Every second tooth 12 is provided with a bore 13 located eccentrically in it; As already mentioned, this serves to connect a pressure line of a hydraulic system (not shown), with the aid of which the teeth 12 are lifted from the teeth 14 (FIG. 3) of the pressure cover 7 behind them in the assembled state during disassembly, for which, as shown in FIG 1 can be seen, there is an axial play between the cover 7 and the stage housing 5 or the stator 6, which becomes effective during assembly and allows the pressure cover 7 to be rotated in the pot housing without axial forces and without axial displacements during this rotation.

Die Zähne 14-sind radial nach aussen vorstehend auf dem äusseren Umfang des Druckdeckels verteilt, der in seinem Durchmesser der lichten Weite der Gehäuseverzahnung entspricht. Form und Lage der Zähne 12 und 14 sind so aufeinander abgestimmt, dass die Zähne 14 des Druckdeckels 7 zwischen den Zähnen 12 hindurch in das Gehäuse eingeführt werden und nach Lösen des Druckdeckels 7 vom Stator 5, 6 durch eine Drehung - im vorliegenden Beispiel um /8 - hinter diesen fixiert werden.The teeth 14 are distributed radially outward and projecting on the outer circumference of the pressure cover, the diameter of which corresponds to the inside width of the housing teeth. The shape and position of the teeth 12 and 14 are matched to one another such that the teeth 14 of the pressure cover 7 between the teeth 12 are inserted into the housing and after loosening the pressure cover 7 from the stator 5, 6 by a rotation - in the present example by / 8 - are fixed behind them.

In den Zähnen 14 sind ebenfalls durchgehende Bohrungen 15 vorgesehen, durch die beim Zusammenfügen von Rotor 2, 3, 4, Stator 5, 6, 9 und Druckdeckel 7 zu einer Einschubeinheit Schraubenbolzen 16 (Fig. l) hindurch-greifen. Diese werden zur Fixierung des Deckels 7 in der Einschubeinheit in mit Gewindebohrungen 18 versehene Laschen 17 am Leitrad 6 der letzten Stufe eingeschraubt. Selbstverständlich werden diese Schrauben 16 gelöst, bevor nach dem Einschub der Einheit die Zähne 12 und 14 durch die erwähnte Drehung miteinander in Eingriff gebracht werden.Through bores 15 are also provided in the teeth 14, through which screw bolts 16 (FIG. 1) reach when an assembly of rotor 2, 3, 4, stator 5, 6, 9 and pressure cover 7 results in an insertion unit. To fix the cover 7 in the insertion unit, these are screwed into tabs 17 provided with threaded holes 18 on the stator 6 of the last stage. Of course, these screws 16 are loosened before the teeth 12 and 14 are brought into engagement with one another by the aforementioned rotation after the insertion of the unit.

Zur axialen und radialen Abdichtung des Innenhohlraumes 11 - und sind in den Umfang des Druckdeckels 7/in die Stirnfläche des Gehäuses 1 je eine Ringnut 19 eingelassen, in die als elastisches Dichtelement je ein O-Ring 20 eingelegt ist. diesem Die mit / zusammenwirkenden Dichtflächen werden gebildet durch einen den Spalt zwischen dem Gehäuse 1 und dem Druckdeckel 7 verschliessenden Flanschring 21, der auf das Gehäuse 1 aufgesetzt und mit Schrauben 22 befestigt ist, die in Gewindebohrungen 23 eingreifen.For the axial and radial sealing of the inner cavity 11 - and an annular groove 19 are embedded in the circumference of the pressure cover 7 / in the end face of the housing 1, in each of which an O-ring 20 is inserted as an elastic sealing element. The sealing surfaces cooperating with / are formed by a flange ring 21 which closes the gap between the housing 1 and the pressure cover 7, which is placed on the housing 1 and fastened with screws 22 which engage in threaded bores 23.

Die richtige nach jeder Demontage und Montage wieder gleiche Positionierung des Druckdeckels 7 gegenüber dem Gehäuse 1 wird gewährleistet durch einen Positionierstift 25, der (Fig. 2) in eine Bohrung 24/in der Gehäusestirnfläche eingreift und für den Flanschring 21 die richtige Lage gegenüber dem Gehäuse 1 sicherstellt; die Justierung des Druckdeckels 7 gegenüber dem Flanschring 21 erfolgt dann durch einen Justierkeil 26, der in entsprechende Ausnehmungen dieser beiden Elemente eingelegt ist.The correct positioning of the pressure cover 7 relative to the housing 1 after each disassembly and assembly is ensured by a positioning pin 25 which (FIG. 2) engages in a bore 24 / in the housing end face and the correct position for the flange ring 21 relative to the housing 1 ensures; the adjustment of the pressure cover 7 relative to the flange ring 21 is then carried out by an adjusting wedge 26 which is inserted into corresponding recesses in these two elements.

Claims (4)

1. Topfgehäuse für eine Turbomaschine, das stirnseitig mit einem Druckdeckel verschlossen ist, wobei Dichtelemente den Innenraum der Pumpe im Trennspalt zwischen Gehäuse und Deckel gegen die Umgebung abdichten, dadurch gekennzeichnet, dass die den Druckdeckel (7) aufnehmende Stirnseite des Topfgehäuses (1) in ihrer Oeffnung (11) für den Einschub der Pumpe eine radial nach innen ragende Verzahnung (12) und der in seinem Durchmesser der lichten Weite der Gehäuseverzahnung (12) entsprechende Druckdeckel (7) eine radial nach aussen gerichtete Verzahnung (14) tragen, wobei die Anordnung der Zähne (12, 14) in Umfangsrichtung und ihre Abmessungen ein Einführen des Deckels (7) in das Gehäuse (1) ermöglichen, und dass ferner auf der Stirnseite des Gehäuses (1) unter Zwischenlage von elastischen Dichtelementen (20) ein den Druckdeckel (7) umschliessender Flanschring. (21) befestigt ist.1. pot housing for a turbomachine, which is closed at the end with a pressure cover, sealing elements sealing the interior of the pump in the separating gap between the housing and cover from the environment, characterized in that the end face of the pot housing (1) receiving the pressure cover (7) in its opening (11) has a radially inwardly projecting teeth (12) and (7) carry for the insertion of the pump in its diameter to the inside width of the housing toothing jerk lid corresponding D (12) has a radially outwardly directed teeth (14) where the arrangement of the teeth (12, 14) in the circumferential direction and their dimensions enable insertion of the cover (7) into the housing (1), and that further on the front side of the housing (1) with the interposition of elastic sealing elements (20) Flange ring enclosing pressure cover (7). (21) is attached. 2. Topfgehäuse nach Anspruch 1, dadurch gekennzeichnet, dass mindestens einzelne Zähne (14) des Druckdeckels (7) axial durchbohrt sind. 2nd Pot housing according to claim 1, characterized in that at least individual teeth (14) of the pressure cover (7) are axially pierced. 3. Topfgehäuse nach Anspruch 2, dadurch gekennzeichnet, dass der Druckdeckel (7) für die Montage mit Hilfe von durch die Bohrungen (15) seiner Zähne (14) geführten Schraubenbolzen (16) mit dem Stator (5, 6) der Pumpe zu einer Einschubeinheit vereinigt ist. 3rd Pot housing according to claim 2, characterized in that the pressure cover (7) combines with the stator (5, 6) of the pump to form a plug-in unit for assembly by means of screw bolts (16) guided through the bores (15) of its teeth (14) is. 4. Topfgehäuse nach Anspruch 1, dadurch gekennzeichnet, dass mindestens einzelne Zähne (12) der Gehäuseverzahnung axial durchbohrt sind.4. T opfgehäuse according to claim 1, characterized in that at least individual teeth (12) of the housing teeth are perforated axially.
EP85102392A 1984-03-19 1985-03-04 End cover for a turbo machine Expired - Lifetime EP0155581B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1370/84 1984-03-19
CH1370/84A CH662865A5 (en) 1984-03-19 1984-03-19 POT HOUSING FOR A CENTRIFUGAL PUMP.

Publications (3)

Publication Number Publication Date
EP0155581A2 true EP0155581A2 (en) 1985-09-25
EP0155581A3 EP0155581A3 (en) 1987-05-27
EP0155581B1 EP0155581B1 (en) 1991-05-08

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ID=4208826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85102392A Expired - Lifetime EP0155581B1 (en) 1984-03-19 1985-03-04 End cover for a turbo machine

Country Status (8)

Country Link
US (1) US4701103A (en)
EP (1) EP0155581B1 (en)
JP (1) JPS60212697A (en)
BR (1) BR8501195A (en)
CH (1) CH662865A5 (en)
DE (2) DE3410931C1 (en)
MX (1) MX161037A (en)
NO (1) NO158073C (en)

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* Cited by examiner, † Cited by third party
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WO2014095843A1 (en) * 2012-12-17 2014-06-26 Siemens Aktiengesellschaft Compact backup seal for a turbomachine housing
DE102013208357B3 (en) * 2013-05-07 2014-07-03 Siemens Aktiengesellschaft Arrangement with a seal

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932836A (en) * 1988-06-10 1990-06-12 Bw/Ip International, Inc. Pump with heat exchanger
DE4230715A1 (en) * 1992-09-14 1994-03-17 Klein Schanzlin & Becker Ag Relief water return
US5503490A (en) * 1994-05-13 1996-04-02 United Technologies Corporation Thermal load relief ring for engine case
US5807086A (en) * 1996-08-16 1998-09-15 The Duriron Company, Inc. Seal chamber splash guard

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE503860C (en) * 1930-07-30 I G Farbenindustrie Akt Ges Boiler lock
DE516079C (en) * 1931-01-17 Maffei Schwartzkopff Werke G M Multi-stage centrifugal pump
DE963523C (en) * 1953-09-01 1957-05-09 Siemens Ag Double-shell turbine
US2818193A (en) * 1954-10-26 1957-12-31 Griscom Russell Co Head closure construction for heat exchangers
DE1959087A1 (en) * 1969-11-25 1971-05-27 Hanning Elektro Werke Housing for motor pumps
FR2187078A5 (en) * 1972-05-26 1974-01-11 Nuovo Pignone Spa
CH562405A5 (en) * 1973-02-14 1975-05-30 Sulzer Ag Multi-or- single-stage centrifugal pump - has device driven by pump shaft for additional pressure intensification of part flow
DE2936645B1 (en) * 1979-09-07 1981-02-12 Sulzer Ag Centrifugal pump

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1128474A (en) * 1913-12-31 1915-02-16 Randolph N Martz Hose-coupling.
US1873621A (en) * 1929-10-17 1932-08-23 American Cast Iron Pipe Co Pipe joint
US1947743A (en) * 1931-12-18 1934-02-20 Walter G Schoeneck Coupling connection for ensilage conduits
US1962400A (en) * 1932-03-04 1934-06-12 Mcwane Cast Iron Pipe Company Pipe joint
US2296710A (en) * 1938-04-23 1942-09-22 Westinghouse Electric & Mfg Co High pressure sealing head
US2376566A (en) * 1944-04-01 1945-05-22 George V Woodling Closure means for cylinders
US2647768A (en) * 1949-05-19 1953-08-04 Cleveland Brass Mfg Company Tank fill connection
FR1568956A (en) * 1968-03-04 1969-05-30
BE755137A (en) * 1970-04-07 1971-02-01 Lummus Nederland N V DEVICE FOR SEALING A METAL PRESSURE VESSEL, ESPECIALLY OF A HEAT EXCHANGER END BOX
FR2094402A5 (en) * 1970-06-19 1972-02-04 Sedelem
US3934752A (en) * 1974-01-17 1976-01-27 Carrier Corporation End wall closure apparatus
US3874814A (en) * 1974-04-05 1975-04-01 Carrier Corp Closure key apparatus
JPS5783697A (en) * 1980-11-12 1982-05-25 Hitachi Ltd Barrel type casing
US4347945A (en) * 1981-05-05 1982-09-07 Borg-Warner Corporation Pump closure fastening means

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE503860C (en) * 1930-07-30 I G Farbenindustrie Akt Ges Boiler lock
DE516079C (en) * 1931-01-17 Maffei Schwartzkopff Werke G M Multi-stage centrifugal pump
DE963523C (en) * 1953-09-01 1957-05-09 Siemens Ag Double-shell turbine
US2818193A (en) * 1954-10-26 1957-12-31 Griscom Russell Co Head closure construction for heat exchangers
DE1959087A1 (en) * 1969-11-25 1971-05-27 Hanning Elektro Werke Housing for motor pumps
FR2187078A5 (en) * 1972-05-26 1974-01-11 Nuovo Pignone Spa
CH562405A5 (en) * 1973-02-14 1975-05-30 Sulzer Ag Multi-or- single-stage centrifugal pump - has device driven by pump shaft for additional pressure intensification of part flow
DE2936645B1 (en) * 1979-09-07 1981-02-12 Sulzer Ag Centrifugal pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014095843A1 (en) * 2012-12-17 2014-06-26 Siemens Aktiengesellschaft Compact backup seal for a turbomachine housing
DE102013208357B3 (en) * 2013-05-07 2014-07-03 Siemens Aktiengesellschaft Arrangement with a seal
WO2014180650A1 (en) 2013-05-07 2014-11-13 Siemens Aktiengesellschaft Arrangement having a seal

Also Published As

Publication number Publication date
NO158073B (en) 1988-03-28
JPH0442560B2 (en) 1992-07-13
DE3410931C1 (en) 1985-09-26
DE3582741D1 (en) 1991-06-13
EP0155581B1 (en) 1991-05-08
CH662865A5 (en) 1987-10-30
US4701103A (en) 1987-10-20
MX161037A (en) 1990-07-12
JPS60212697A (en) 1985-10-24
EP0155581A3 (en) 1987-05-27
BR8501195A (en) 1985-11-12
NO158073C (en) 1988-07-06
NO851075L (en) 1985-09-20

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