EP1132624B1 - Pump casing with separate sealing unit - Google Patents

Pump casing with separate sealing unit Download PDF

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Publication number
EP1132624B1
EP1132624B1 EP00105018A EP00105018A EP1132624B1 EP 1132624 B1 EP1132624 B1 EP 1132624B1 EP 00105018 A EP00105018 A EP 00105018A EP 00105018 A EP00105018 A EP 00105018A EP 1132624 B1 EP1132624 B1 EP 1132624B1
Authority
EP
European Patent Office
Prior art keywords
housing
seal
pump
cover
sealing
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.)
Expired - Lifetime
Application number
EP00105018A
Other languages
German (de)
French (fr)
Other versions
EP1132624A1 (en
Inventor
Jörg Freese
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.)
Sterling Fluid Systems Germany GmbH
Original Assignee
Sterling Fluid Systems Germany 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 Sterling Fluid Systems Germany GmbH filed Critical Sterling Fluid Systems Germany GmbH
Priority to ES00105018T priority Critical patent/ES2250037T3/en
Priority to DK00105018T priority patent/DK1132624T3/en
Priority to DE50011375T priority patent/DE50011375D1/en
Priority to AT00105018T priority patent/ATE307296T1/en
Priority to EP00105018A priority patent/EP1132624B1/en
Publication of EP1132624A1 publication Critical patent/EP1132624A1/en
Application granted granted Critical
Publication of EP1132624B1 publication Critical patent/EP1132624B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/106—Shaft sealings especially adapted for liquid pumps
    • 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
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
    • F04D29/128—Shaft sealings using sealing-rings especially adapted for liquid pumps with special means for adducting cooling or sealing fluid
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

  • the invention relates to a pump according to the preamble of the claim 1.
  • the housing of centrifugal pumps usually consist of a or more housing parts that make up the work space or work spaces enclose on the circumference, as well as a lid, through the pump shaft is guided sealed in the housing. Because there are different types of gaskets, the different ones Requirements for the shape of the housing cover it is customary for any one related to one Pump type for sealing type to use a special housing cover provided.
  • the invention is based on the object, a pump of the above constructively simplify this type.
  • the invention provides for this purpose that the lid and the seal housing to be operated with a locking medium Seal contain aligned holes for the barrier medium supply, in the opposite circumferential surfaces the passage opening and the sealing housing therein lead.
  • the aforementioned peripheral surfaces are as mating surfaces engineered and located within the static seal.
  • the invention has recognized on the one hand that due to the aligned Holes in the lid and the seal housing one with Barrier medium to be operated seal the hole in the lid regardless of whether the barrier medium-needy Seal type is used or not.
  • the cover hole is aligned with the corresponding Bore of the seal housing; in the other case, the Dekkelbohrung through the closed executed seal housing blocked.
  • the housing of the pump comprises on the one hand a main housing part 1, the foot 2, the suction nozzle 3 and the discharge nozzle 4 forms, and on the other hand, a housing cover 5, the Main body part 1 on the drive side closes.
  • a bearing housing 6 the two Includes bearing 7 for the shaft 8, which through the lid 5 in the housing is guided and there carries the impeller 9.
  • the housing cover 5 includes a Passage opening 10 which is closed by the seal housing 11 is that in turn holds the seal 12.
  • the Seal housing 11 is in the area of the end faces 13 with bolted to the housing cover 5 and by a suitable sealed static seal.
  • the seal 12 as Mechanical seal 12a formed.
  • FIG. 2 is a Stuffing box packing 12b, which in a chamber of the corresponding Seal housing 11 b axially compressed by means of glasses 14 becomes. It is intended for operation with barrier fluid, through a bore 15 the pump chamber near the pressure side is removed and via a bore 16 in the seal housing 11b, which is aligned with the bore 15, in the packing area arrives. The transition from the bore 15 to the bore 16 takes place in the region of the gap 17 between each other Peripheral surfaces of the seal housing 11b and the housing cover 5 instead, by choosing appropriate dimensional tolerances so close is the loss that takes place Barrier fluid is negligible.
  • the seal is also a with Bulk liquid operated packing seal 12c.
  • the barrier liquid supplied from the outside.
  • the supply channel generally provided exclusively in the seal housing In the example of Fig. 3, the supply via a Bore 18 in the corresponding seal housing 11c.
  • the in the housing cover 5 located hole 15, in the execution as shown in FIG. 2 for the supply of sealing fluid from within The pump is shut off in this case by on the closed circumference of the seal housing 11c opens.
  • matching housing cover 5 used. Only the seals and seal housing are formed differently.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The pump has an installation opening(10) for a seal housing(11) in the cover for the pump casing, and for each seal(12a) from a group of predetermined seals a seal housing is fitted in the installation opening and with the cover provides static sealing. At least one of the predetermined seals is supplied with sealing medium and the cover and seal housing have aligning holes for feed thereof. The opposite lying circumferential faces of the installation opening and seal housing are constructed as seat engaging surfaces.

Description

Die Erfindung betrifft eine Pumpe gemäß Oberbegriff des Anspruchs 1.The invention relates to a pump according to the preamble of the claim 1.

Die Gehäuse von Kreiselpumpen bestehen in der Regel aus einem oder mehreren Gehäuseteilen, die den Arbeitsraum oder die Arbeitsräume am Umfang umschließen, sowie einem Deckel, durch den die Pumpenwelle abgedichtet in das Gehäuse geführt ist. Da es unterschiedliche Typen von Dichtungen gibt, die unterschiedliche Anforderungen an die Gestalt des Gehäusedeckels stellen, ist es üblich, für jede im Zusammenhang mit einer Pumpentype zur verwendende Dichtungstype einen besonderen Gehäusedeckel vorzusehen.The housing of centrifugal pumps usually consist of a or more housing parts that make up the work space or work spaces enclose on the circumference, as well as a lid, through the pump shaft is guided sealed in the housing. Because there are different types of gaskets, the different ones Requirements for the shape of the housing cover it is customary for any one related to one Pump type for sealing type to use a special housing cover provided.

Aus dem Bericht "Teilevielfalt als Kostenverursacher am Beispiel von Standardkreiselpumpen für Serienfertigung" von H. Timcke, in: Industriepumpen - Kompressoren Juni 1998, S. 84-93, ist es bekannt, für eine Packungsstopfbuchse und eine Gleitringdichtung neben dem Gehäusedeckel jeweils ein spezifisches Dichtungsgehäuse vozusehen. Der Gehäusedeckel ist für beide Dichtungsvarianten derselbe. Es ist daher nicht erforderlich, mit Rücksicht auf die unterschiedlichen Dichtungstypen mehrere Deckelformen vorrätig zu halten, wodurch der Aufwand sowohl für die Herstellung als auch die Lagerhaltung der Deckel verringert wird. From the report "variety of parts as cost causer by the example of standard centrifugal pumps for series production "by H. Timcke, in: Industrial Pumps - Compressors June 1998, p. 84-93, It is known for a packing gland and a Mechanical seal next to the cover each a specific Voucher housing. The housing cover is for both seal variants the same. It is therefore not necessary with regard to the different types of gaskets to keep several lid shapes in stock, eliminating the hassle both for the production and the storage of Lid is reduced.

Der Erfindung liegt die Aufgabe zugrunde, eine Pumpe der eingangs genannten Art konstruktiv zu vereinfachen.The invention is based on the object, a pump of the above constructively simplify this type.

Die Erfindung sieht zu diesem Zweck vor, daß der Deckel sowie das Dichtungsgehäuse einer mit Sperrmedium zu betreibenden Dichtung fluchtende Bohrungen für die Sperrmediumszufuhr enthalten, die in den einander gegenüberliegenden Umfangsflächen der Durchtrittsöffnung und des darin liegenden Dichtungsgehäuses münden. Die genannten Umfangsflächen sind als Paßflächen ausgeführt und innerhalb der statischen Dichtung gelegen.The invention provides for this purpose that the lid and the seal housing to be operated with a locking medium Seal contain aligned holes for the barrier medium supply, in the opposite circumferential surfaces the passage opening and the sealing housing therein lead. The aforementioned peripheral surfaces are as mating surfaces engineered and located within the static seal.

Die Erfindung hat einerseits erkannt, daß infolge der fluchtenden Bohrungen im Deckel und dem Dichtungsgehäuse einer mit Sperrmedium zu betreibenden Dichtung die Bohrung im Deckel ohne Rücksicht darauf vorhanden sein kann, ob die sperrmediumsbedürftige Dichtungstype verwendet wird oder nicht. Im einen Fall fluchtet die Deckelbohrung mit der entsprechenden Bohrung des Dichtungsgehäuses; im anderen Fall wird die Dekkelbohrung durch das geschlossen ausgeführte Dichtungsgehäuse versperrt.The invention has recognized on the one hand that due to the aligned Holes in the lid and the seal housing one with Barrier medium to be operated seal the hole in the lid regardless of whether the barrier medium-needy Seal type is used or not. In one Case, the cover hole is aligned with the corresponding Bore of the seal housing; in the other case, the Dekkelbohrung through the closed executed seal housing blocked.

Es ist möglich, bei einer gegebenen Pumpe nachträglich die Dichtung gegen einen anderen Typ samt Dichtungsgehäuse auszuwechseln, ohne daß auch der Pumpendeckel ausgewechselt wird. Dieser braucht in der Regel nicht einmal gelöst zu werden.It is possible for a given pump subsequently the Replacing the seal with another type, including the seal housing, without also the pump cover is replaced. This usually does not even need to be solved.

Um zu vermeiden, daß die Übergangsstelle von der Deckelbohrung zur Bohrung des Dichtungsgehäuses mit einer Dichtung versehen werden muß, ist es nach der Erfindung andererseits vorgesehen , daß die fluchtenden Bohrungen in den einander gegenüberliegenden Umfangsflächen der Montageöffnung und des Dichtungsgehäuses münden, wobei diese Umfangsflächen als Paßflächen ausgebildet sind. Die Ausführung als Paßflächen bedeutet, daß ihre Abmessungen jeweils in einem engen Toleranzbereich einander angenähert sind, so daß ein zwischen ihnen möglicherweise verbleibender Spalt so gering ist, daß die dadurch stattfindenden Sperrmediumsverluste vernachlässigbar sind. Es versteht sich, daß in diesem Fall die genannten Umfangsflächen innerhalb der statischen Dichtung gelegen sind, die das Dichtungsgehäuse gegenüber dem Gehäusedeckel abdichtet, so daß etwaige Leckverluste in der Pumpe verbleiben und nicht nach außen gelangen.To avoid that the transition point of the cover hole for drilling the seal housing with a seal must be provided, it is according to the invention on the other provided that the aligned holes in each other opposite peripheral surfaces of the mounting hole and the Seal housing open, these peripheral surfaces as mating surfaces are formed. The design as mating surfaces means that their dimensions each within a narrow tolerance range so that one is between them possibly remaining gap is so small that the thereby occurring blocking medium losses negligible are. It is understood that in this case the said peripheral surfaces located within the static seal, which seals the seal housing against the housing cover, so that any leakage in the pump remain and do not get outside.

Die Erfindung wird im folgenden näher unter Bezugnahme auf die Zeichnung erläutert, die vorteilhafte Ausführungsbeispiele veranschaulicht. Es zeigen:

Fig. 1
einen Längsschnitt durch eine Pumpe und
Fig. 2 und 3
Teilschnitte derselben Pumpe mit unterschiedlichen Wellendichtungen.
The invention will be explained in more detail below with reference to the drawing, which illustrates advantageous embodiments. Show it:
Fig. 1
a longitudinal section through a pump and
FIGS. 2 and 3
Partial sections of the same pump with different shaft seals.

Das Gehäuse der Pumpe umfaßt einerseits einen Hauptgehäuseteil 1, der den Fuß 2, den Saugstutzen 3 und den Druckstutzen 4 bildet, und andererseits einen Gehäusedeckel 5, der den Hauptgehäuseteil 1 auf der Antriebsseite schließt. An das Pumpengehäuse schließt sich ein Lagergehäuse 6 an, das zwei Lager 7 für die Welle 8 enthält, die durch den Deckel 5 in das Gehäuse geführt ist und dort das Flügelrad 9 trägt. Für den Durchtritt der Welle 8 enthält der Gehäusedeckel 5 eine Durchtrittsöffnung 10, die durch das Dichtungsgehäuse 11 geschlossen ist, das seinerseits die Dichtung 12 hält. Das Dichtungsgehäuse 11 ist im Bereich der Stirnflächen 13 mit dem Gehäusedeckel 5 verschraubt und durch eine geeignete statische Dichtung abgedichtet.The housing of the pump comprises on the one hand a main housing part 1, the foot 2, the suction nozzle 3 and the discharge nozzle 4 forms, and on the other hand, a housing cover 5, the Main body part 1 on the drive side closes. To the Pump housing is followed by a bearing housing 6, the two Includes bearing 7 for the shaft 8, which through the lid 5 in the housing is guided and there carries the impeller 9. For the passage of the shaft 8, the housing cover 5 includes a Passage opening 10 which is closed by the seal housing 11 is that in turn holds the seal 12. The Seal housing 11 is in the area of the end faces 13 with bolted to the housing cover 5 and by a suitable sealed static seal.

Im Ausführungsbeispiel gemäß Fig. 1 ist die Dichtung 12 als Gleitringdichtung 12a ausgebildet.In the embodiment of FIG. 1, the seal 12 as Mechanical seal 12a formed.

Im Ausführungsbeispiel gemäß Fig. 2 handelt es sich um eine Stopfbuchspackung 12b, die in einer Kammer des entsprechenden Dichtungsgehäuses 11b mittels einer Brille 14 axial komprimiert wird. Sie ist zum Betrieb mit Sperrflüssigkeit vorgesehen, die durch eine Bohrung 15 dem Pumpenraum nahe der Druckseite entnommen wird und über eine Bohrung 16 im Dichtungsgehäuse 11b, die mit der Bohrung 15 fluchtet, in den Packungsbereich gelangt. Der Übergang von der Bohrung 15 zur Bohrung 16 findet im Bereich des Spalts 17 zwischen einander gegenüberstehenden Umfangsflächen des Dichtungsgehäuses 11b und des Gehäusedeckels 5 statt, der durch Wahl geeigneter Maßtoleranzen so eng ist, daß der dadurch stattfindende Verlust an Sperrflüssigkeit vernachlässigbar ist.In the embodiment of FIG. 2 is a Stuffing box packing 12b, which in a chamber of the corresponding Seal housing 11 b axially compressed by means of glasses 14 becomes. It is intended for operation with barrier fluid, through a bore 15 the pump chamber near the pressure side is removed and via a bore 16 in the seal housing 11b, which is aligned with the bore 15, in the packing area arrives. The transition from the bore 15 to the bore 16 takes place in the region of the gap 17 between each other Peripheral surfaces of the seal housing 11b and the housing cover 5 instead, by choosing appropriate dimensional tolerances so close is the loss that takes place Barrier fluid is negligible.

Im Beispiel gemäß Fig. 3 ist die Dichtung ebenfalls eine mit Sperrflüssigkeit betriebene Packungsdichtung 12c. Im Unterschied zur Ausführung gemäß Fig. 2 wird die Sperrflüssigkeit von außen zugeführt. In diesem Fall kann der Zuführungskanal im allgemeinen ausschließlich im Dichtungsgehäuse vorgesehen werden.Im Beispiel der Fig. 3 erfolgt die Zufuhr über eine Bohrung 18 im entsprechenden Dichtungsgehäuse 11c. Die im Gehäusedeckel 5 befindliche Bohrung 15, die in der Ausführung gemäß Fig. 2 für die Zuführung von Sperrflüssigkeit von innerhalb der Pumpe dient, ist in diesem Falle abgesperrt, indem sie auf den geschlossenen Umfang des Dichtungsgehäuses 11c mündet.In the example of FIG. 3, the seal is also a with Bulk liquid operated packing seal 12c. In difference for the execution of FIG. 2, the barrier liquid supplied from the outside. In this case, the supply channel generally provided exclusively in the seal housing In the example of Fig. 3, the supply via a Bore 18 in the corresponding seal housing 11c. The in the housing cover 5 located hole 15, in the execution as shown in FIG. 2 for the supply of sealing fluid from within The pump is shut off in this case by on the closed circumference of the seal housing 11c opens.

In alle drei Fällen werden übereinstimmend ausgebildete Gehäusedeckel 5 verwendet. Lediglich die Dichtungen und Dichtungsgehäuse sind unterschiedlich ausgebildet.In all three cases, matching housing cover 5 used. Only the seals and seal housing are formed differently.

Claims (1)

  1. Pump with a pump shaft (8) and a pump housing (1, 5) which comprises a housing cover (5) which includes an installation aperture with a static seal for a sealing housing which forms a through-opening for the shaft and which is set up for a seal (12a, 12b, 12c) comprising a group of allotted seals (12a, 12b, 12c), at least one of which is to be operated with a sealing medium, characterised in that the cover (5) and the sealing housing (11b) of a seal (12b) to be operated with sealing medium include aligned bores (15, 16) for the supply of sealing medium, which bores discharge into the mutually opposing circumferential surfaces of the mounting aperture (10) and of the sealing housing (11b) disposed therein, wherein said circumferential surfaces are in the form of mating surfaces and are situated inside the static seal.
EP00105018A 2000-03-09 2000-03-09 Pump casing with separate sealing unit Expired - Lifetime EP1132624B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES00105018T ES2250037T3 (en) 2000-03-09 2000-03-09 PUMP HOUSING WITH INDEPENDENT CLOSURE UNIT.
DK00105018T DK1132624T3 (en) 2000-03-09 2000-03-09 Pump housing with separate sealing unit
DE50011375T DE50011375D1 (en) 2000-03-09 2000-03-09 Pump housing with separate sealing unit
AT00105018T ATE307296T1 (en) 2000-03-09 2000-03-09 PUMP HOUSING WITH SEPARATE SEAL UNIT
EP00105018A EP1132624B1 (en) 2000-03-09 2000-03-09 Pump casing with separate sealing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00105018A EP1132624B1 (en) 2000-03-09 2000-03-09 Pump casing with separate sealing unit

Publications (2)

Publication Number Publication Date
EP1132624A1 EP1132624A1 (en) 2001-09-12
EP1132624B1 true EP1132624B1 (en) 2005-10-19

Family

ID=8168069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00105018A Expired - Lifetime EP1132624B1 (en) 2000-03-09 2000-03-09 Pump casing with separate sealing unit

Country Status (5)

Country Link
EP (1) EP1132624B1 (en)
AT (1) ATE307296T1 (en)
DE (1) DE50011375D1 (en)
DK (1) DK1132624T3 (en)
ES (1) ES2250037T3 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS588869A (en) * 1981-07-10 1983-01-19 Hitachi Ltd Water sealing device in feed water pump for boiler
SE466925B (en) * 1990-09-03 1992-04-27 Flygt Ab Itt TAETNINGSANORDNING
GB2329432A (en) * 1997-04-18 1999-03-24 Thomas Wilson Ramsay Seal for pump shaft with adjustable barrier fluid pressure

Also Published As

Publication number Publication date
DE50011375D1 (en) 2006-03-02
ES2250037T3 (en) 2006-04-16
EP1132624A1 (en) 2001-09-12
ATE307296T1 (en) 2005-11-15
DK1132624T3 (en) 2006-02-06

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