EP0535365B1 - Pompe centrifuge - Google Patents

Pompe centrifuge Download PDF

Info

Publication number
EP0535365B1
EP0535365B1 EP92114535A EP92114535A EP0535365B1 EP 0535365 B1 EP0535365 B1 EP 0535365B1 EP 92114535 A EP92114535 A EP 92114535A EP 92114535 A EP92114535 A EP 92114535A EP 0535365 B1 EP0535365 B1 EP 0535365B1
Authority
EP
European Patent Office
Prior art keywords
housing
pump
centrifugal pump
fan wheel
shaft
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
EP92114535A
Other languages
German (de)
English (en)
Other versions
EP0535365A1 (fr
Inventor
Hauke Dipl.-Ing. Kuhrt
Hermann Dipl.-Ing. Müller
Wilfried Dr.-Ing. Lehmann
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.)
Sihi GmbH and Co KG
Original Assignee
Sihi GmbH and Co KG
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 Sihi GmbH and Co KG filed Critical Sihi GmbH and Co KG
Publication of EP0535365A1 publication Critical patent/EP0535365A1/fr
Application granted granted Critical
Publication of EP0535365B1 publication Critical patent/EP0535365B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/5893—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps heat insulation or conduction

Definitions

  • the invention relates to a centrifugal pump, in particular for conveying hot media, with a pump housing, a shaft emerging from the pump housing, a shaft seal, the housing of which is connected to the pump housing, with a fan wheel fastened to the shaft and with a region of the fan wheel and perforated fender covering axially adjoining areas on both sides.
  • the life of the shaft seal depends on the temperature. In addition to design features that inhibit the heat flow from the pump to the seal, it is therefore known (FR-A 22 20 723) to cool the seal housing by means of an air flow that is generated by a fan arranged on the shaft. This is surrounded by a mudguard that is broken through to allow heat and air to be exchanged. For example, it can contain longitudinal slots. Since the seal usually lets leakage liquid through, at least after a certain amount of wear, there is a risk that the leakage liquid will reach the fan wheel and be thrown off by it with a considerable range.
  • a mudguard which is generally designed to be closed and only for the passage of a pipeline and for access to it a vent screw is broken. So that sufficient cross sections remain for the inflow and outflow of air, it can only extend over a limited axial area and therefore limits the design freedom.
  • the invention is based on the prior art mentioned in the first place and aims to prevent the leakage liquid from splashing on in a simple manner. It achieves this through the features of claim 1.
  • the function of the fan wheel is not affected because the inflow to and from the fan wheel is mainly influenced by the conditions on one or the other axial side of the fan wheel. In any case, this applies if, according to the invention, the ratio of the outer diameter of the fan wheel to the fender diameter is less than 0.8, preferably also less than 0.6.
  • the share of the open area of the fender in its perforated areas should be at least 60%. This applies at least when the mudguard connects more or less closely to the housing parts located on the pump and drive side.
  • the shaft is expediently surrounded by an elongated cooling housing at a short distance between the pump housing and the seal housing. It has been shown that its known effect can be increased if between the interior of the seal housing and a throttle is arranged in the adjoining interior of the cooling housing.
  • thermal insulation is arranged between a wall delimiting the pump interior on the drive side and a wall that closes off the pump housing on the drive side and carries the seal housing (directly or indirectly via the cooling housing).
  • This thermal insulation can be formed by a cavity which is preferably filled with air or with the medium to be pumped.
  • a relatively large blade angle of the fan wheel has proven to be expedient, namely an angle on the outer diameter of the fan wheel between the blades and the circumferential direction between 20 and 40 degrees.
  • the wall parts 5 and 6 form a seat for a bearing bush 8 which receives the pump shaft 9.
  • the wall 6 of the pump housing cover 3 is integrally connected to the elongated cooling housing 10, which surrounds the shaft 9 at a short distance and carries the sealing housing 11 at its end, which contains the suitable sealing means 12, for example shaft sealing rings.
  • the bearing bush 8 prevents the free circulation of the medium from the pump interior 4 to the cooling housing 10.
  • a throttle 13 prevents the circulation of the medium enclosed in the cooling housing 10 to the interior of the seal housing 11. Both reduce the heat transport.
  • the bearing bush 8 which bridges the gap between the walls 5 and 6, consists of poorly heat-conducting material (for example coal or ceramic) and / or has a small cross-section, insofar as it consists of good heat-conducting material, to thereby reduce the heat transfer from the wall 5 to the cooling housing 10.
  • the shaft 9 merges into a coupling sleeve 14 which is mounted in a bearing housing 16 by means of a roller bearing 15 which, together with a flange 17, is supported by means of ribs 18 by a flange 19 which is connected to the pump housing cover 3 is.
  • the fan wheel 20 which is designed as an axial fan, sits on the shaft 9 between the seal housing 11 and the coupling sleeve 14. As shown at 21, its wings are twisted at their outer circumference by an unusually strong angle with respect to the circumferential direction, which is between 20 and 40 degrees.
  • a cylindrical mudguard 24 supported by the ribs 18, which connects to the flanges 17 and 19 without or with only a small distance and preferably extends over the entire circumference, but at least over its top and side regions. As shown at 22, the entire surface is perforated with the exception of the region 23, which corresponds to the axial extent of the fan wheel 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Claims (7)

  1. Pompe centrifuge, en particulier pour le transport de fluides chauds, comportant un carter de pompe (1), un arbre (9) qui sort du carter de pompe, une garniture étanche d'arbre (12) dont le boîtier (11) est raccordé au carter de pompe (1), ainsi qu'une roue de ventilateur (20) qui est fixée sur l'arbre (9) et une tôle perforée de protection (24) qui recouvre la région de la roue de ventilateur et les régions qui lui font suite en direction axiale des deux côtés, caractérisée en ce que la tôle de protection (24) a une surface ajourée dans une proportion d'au moins 60% et est réalisée sous forme non perforée dans la région (23) de l'étendue axiale de la roue de ventilateur (20).
  2. Pompe centrifuge selon la revendication 1, caractérisée en ce que la tôle de protection (24) joint d'un côté le carter de pompe (1) ou une bride (19) raccordée à celui-ci et, de l'autre côté, un carter de moteur ou de palier (16) ou une bride (17) raccordée à celui-ci.
  3. Pompe centrifuge selon la revendication 1 ou 2, caractérisée en ce que le rapport du diamètre extérieur DL de la roue de ventilateur au diamètre DS de la tôle de protection est inférieur à 0,8, de préférence inférieur à 0,6.
  4. Pompe centrifuge selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'il est disposé, entre le carter de pompe (1) et le boîtier de garniture étanche (11), un carter de refroidissement (10) de forme allongée, qui entoure l'arbre (9) à faible distance.
  5. Pompe centrifuge selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'un étranglement (13) est disposé entre la cavité du boîtier de garniture étanche (11) et la cavité, qui lui fait suite, du carter de pompe ou du carter de refroidissement (10).
  6. Pompe centrifuge selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'une isolation thermique (7) est disposée entre une paroi (5), qui limite du côté de l'entraînement la cavité (4) de la pompe, et une paroi (6) qui ferme du côté de l'entraînement le carter de pompe et qui porte le boîtier de garniture étanche (11).
  7. Pompe centrifuge selon l'une quelconque des revendications 1 à 6, caractérisée en ce que les ailettes (21) de la roue de ventilateur (20), au niveau de son diamètre extérieur, forment avec la direction circonférentielle un angle compris entre 20 et 40°.
EP92114535A 1991-09-09 1992-08-26 Pompe centrifuge Expired - Lifetime EP0535365B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9111161U 1991-09-09
DE9111161U DE9111161U1 (de) 1991-09-09 1991-09-09 Kreiselpumpe

Publications (2)

Publication Number Publication Date
EP0535365A1 EP0535365A1 (fr) 1993-04-07
EP0535365B1 true EP0535365B1 (fr) 1995-10-25

Family

ID=6871059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92114535A Expired - Lifetime EP0535365B1 (fr) 1991-09-09 1992-08-26 Pompe centrifuge

Country Status (6)

Country Link
EP (1) EP0535365B1 (fr)
AT (1) ATE129547T1 (fr)
DE (2) DE9111161U1 (fr)
DK (1) DK0535365T3 (fr)
ES (1) ES2079757T3 (fr)
GR (1) GR3018394T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29503806U1 (de) * 1995-03-06 1996-07-04 Sihi GmbH & Co KG, 25524 Itzehoe Pumpe zur Förderung heißer Medien
DE10013152A1 (de) * 2000-03-17 2001-09-20 Ksb Ag Dichtungsgehäuse
CN103267020A (zh) * 2013-04-24 2013-08-28 欧技工业设备（江苏）有限公司 高温熔盐泵
CN103644137A (zh) * 2013-12-04 2014-03-19 江苏大学 一种外壁面带冷却水套的热水循环泵悬架体

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884482A (en) * 1973-03-08 1975-05-20 Borg Warner Cooled seal cartridge
DE2630513C2 (de) * 1976-07-07 1985-11-28 Allweiler Ag, 7760 Radolfzell Kühleinrichtung für ein Pumpenaggregat
US4632643A (en) * 1985-02-14 1986-12-30 Nielsen Axel L Sump pump

Also Published As

Publication number Publication date
GR3018394T3 (en) 1996-03-31
DK0535365T3 (da) 1996-02-12
DE59204123D1 (de) 1995-11-30
DE9111161U1 (de) 1993-01-14
ATE129547T1 (de) 1995-11-15
EP0535365A1 (fr) 1993-04-07
ES2079757T3 (es) 1996-01-16

Similar Documents

Publication Publication Date Title
DE2827364A1 (de) Gleitring-dichtung
DE1528862A1 (de) Abwasserpumpe od.dgl.
DE2400325A1 (de) Mit oeleinspritzung arbeitender kreiselkompressor
DE2331966A1 (de) Naehmaschine
DE602004003738T2 (de) Wasserpumpe für Dieselmotor mit Öldichtung
EP0535365B1 (fr) Pompe centrifuge
DE1571759B2 (de) Gaswaescher
DE3427565A1 (de) Durch einen elektromotor angetriebenes radialgeblaese
DE3701562C2 (de) Kreiselpumpe mit Spaltrohrmotor
DE102020003928A1 (de) Pumpenanordnung mit temperierbarem Gehäuseteil
DE2341233A1 (de) Motorgeblaese fuer staubsauger
DE3107959A1 (de) Wirbelschichtapparatur
DE8816440U1 (de) Mehrstufiger Seitenkanalverdichter
EP0074514B1 (fr) Arrangement d'un dispositif de refroidissement et d'un moteur avec un ventilateur fixé sur son arbre, notamment pour une installation à compresseur à vis
DE1116797B (de) Gehaeuse fuer elektrische Maschinen mit Doppelkuehlmantel
DE19548471C1 (de) Umwälzpumpenaggregat
DE4039712A1 (de) Umfangsfluss-fluessigkeitspumpe
DE4330648C2 (de) Radialpumpe
EP0191377B1 (fr) Carter avec un roulement pour un arbre horizontal
EP0457970A1 (fr) Appareil de cuisson à vapeur
DE2238103A1 (de) Zentrifugalschaufelrad
EP0995906A1 (fr) Pompe centrifuge double entrainée par un moteur
DE3306571C2 (fr)
DE477753C (de) Stopfbuechse mit Sperrfluessigkeit fuer Dampfturbinen
DE2100345A1 (de) Pumpen- und Spaltrohrrnotoraggregat

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 19930217

17Q First examination report despatched

Effective date: 19940304

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

REF Corresponds to:

Ref document number: 129547

Country of ref document: AT

Date of ref document: 19951115

Kind code of ref document: T

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: 65835

REF Corresponds to:

Ref document number: 59204123

Country of ref document: DE

Date of ref document: 19951130

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: TROESCH SCHEIDEGGER WERNER AG

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2079757

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed

Owner name: UFFICIO TECNICO ING. A. MANNUCCI

ET Fr: translation filed
REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960130

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3018394

SC4A Pt: translation is available

Free format text: 951222 AVAILABILITY OF NATIONAL TRANSLATION

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: MC

Payment date: 20090820

Year of fee payment: 18

Ref country code: FR

Payment date: 20090819

Year of fee payment: 18

Ref country code: ES

Payment date: 20090821

Year of fee payment: 18

Ref country code: DK

Payment date: 20090821

Year of fee payment: 18

Ref country code: IE

Payment date: 20090821

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20090821

Year of fee payment: 18

Ref country code: PT

Payment date: 20090820

Year of fee payment: 18

Ref country code: NL

Payment date: 20090820

Year of fee payment: 18

Ref country code: LU

Payment date: 20090824

Year of fee payment: 18

Ref country code: GB

Payment date: 20090821

Year of fee payment: 18

Ref country code: CH

Payment date: 20090824

Year of fee payment: 18

Ref country code: AT

Payment date: 20090820

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20091027

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20090821

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090825

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 20090825

Year of fee payment: 18

BERE Be: lapsed

Owner name: *SIHI G.M.B.H. & CO. K.G.

Effective date: 20100831

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20110228

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20110301

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

EUG Se: european patent has lapsed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100826

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100831

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110502

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110301

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100826

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100826

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110228

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59204123

Country of ref document: DE

Effective date: 20110301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110302

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100831

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100831

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110301

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100826

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100831

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100826

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20111019

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100827

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100826

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100827