EP0514677B1 - Ajusteur de déflexion pour pompes centrifuges - Google Patents

Ajusteur de déflexion pour pompes centrifuges Download PDF

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Publication number
EP0514677B1
EP0514677B1 EP92106894A EP92106894A EP0514677B1 EP 0514677 B1 EP0514677 B1 EP 0514677B1 EP 92106894 A EP92106894 A EP 92106894A EP 92106894 A EP92106894 A EP 92106894A EP 0514677 B1 EP0514677 B1 EP 0514677B1
Authority
EP
European Patent Office
Prior art keywords
guide vanes
housing
adjusting device
pin
bearing
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
EP92106894A
Other languages
German (de)
English (en)
Other versions
EP0514677A2 (fr
EP0514677A3 (en
Inventor
Ludwig Dipl.-Ing. Kiefer
Jörg Dipl.-Ing. Löw
Horst Dipl.-Ing. Lottermoser
Kurt Dipl.-Ing. Müller
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.)
Halberg Maschinenbau GmbH
Original Assignee
Halberg Maschinenbau 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6432358&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0514677(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Halberg Maschinenbau GmbH filed Critical Halberg Maschinenbau GmbH
Priority to AT92106894T priority Critical patent/ATE102297T1/de
Publication of EP0514677A2 publication Critical patent/EP0514677A2/fr
Publication of EP0514677A3 publication Critical patent/EP0514677A3/de
Application granted granted Critical
Publication of EP0514677B1 publication Critical patent/EP0514677B1/fr
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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • 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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/56—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/566—Fluid-guiding means, e.g. diffusers adjustable specially 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/466—Fluid-guiding means, e.g. diffusers adjustable especially adapted for liquid fluid 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
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/648—Mounting; Assembling; Disassembling of axial pumps especially adapted for liquid pumps

Definitions

  • each guide vane is overhung by a pin which is sealed through the housing of the flow channel containing the guide vanes and is rigidly supported in a bearing located outside the housing and is connected to an adjusting device.
  • This arrangement has the disadvantage that the blades are susceptible to vibration and the bearings, pins and seals have to be dimensioned very strongly and that large adjustment forces occur.
  • the bearings must be rigidly and precisely connected to the housing in the radial direction.
  • the guide vanes are not only supported with their outer end on the housing, but also at their central end on a hub which is fixedly arranged in the center of the channel and carries the bearing devices for the guide vane ends (GB-A-671607; GB-A146452 ; DE-A-2447891).
  • the two-sided mounting of the guide vanes is rarely encountered because this increases the problems associated with the assembly, disassembly and maintenance of the guide vanes.
  • known pumps it is usually necessary to disassemble the housing in order to gain access to the guide vanes and to be able to replace them.
  • the invention has for its object to provide a swirl controller for centrifugal pumps according to the preamble of claim 1, which allows easier assembly and disassembly of the guide vanes with limited storage effort.
  • the solution was found in the characterizing features of claim 1.
  • the guide vane bearing on the housing need neither absorb large forces nor be particularly aligned. This opens up the possibility of arranging them on a cover piece which closes an opening in the housing jacket which is appropriate to the cross-sectional size of the guide vane. This in turn creates the possibility of removing or installing the guide vane through the housing for maintenance purposes.
  • the arrangement of the bearing on the cover also increases the possibility of escape errors, which are neutralized in that at least the bearing provided on the housing for the guide vane pin (possibly including the associated seals) is designed to be escape-error-tolerant. The level of accuracy in the manufacture and assembly of the bearings and covers is considerably reduced.
  • Escape error tolerance is less critical on the hub-side bearing of the guide vanes, because on the one hand the tolerances caused by the cover construction are practically not expressed in misalignments, and on the other hand the hub-side bearing can generally be short and simple and is less sensitive to escape errors anyway.
  • the adjustment device can comprise a roller-mounted ring for the joint adjustment of the guide vanes.
  • a roller-mounted ring for the joint adjustment of the guide vanes.
  • an actuating gear with a continuous drive shaft is used in the adjusting device.
  • This has the advantage that a continuous drive shaft can be used if several swirl regulators are arranged one behind the other (for example for the different stages of a pump arrangement). This is in a particularly close relationship with the aforementioned features of the invention, because only through this the adjusting forces are reduced so much that the drive shaft can be made so thin that a continuous arrangement is advantageous and an extremely small drive motor is required.
  • the adjusting device comprises a self-locking actuating gear with a large transmission ratio. Not only the large gear ratio helps to reduce the Driving forces and thus the dimensions of the drive shaft, but also the self-locking property of the actuating gear, since no holding forces need to be absorbed by the drive shaft.
  • a transmission of the type of sliding wedge transmission is particularly advantageous.
  • the pump housing appearing in FIG. 1 contains two pump stages 1, each of which is preceded by swirl regulator 2.
  • the housing 3 contains a number of slot-shaped mounting openings 6, evenly distributed over the circumference, each of which is tightly closed by a cover 7. Their number and arrangement corresponds to the number and arrangement of guide vanes 8, which are provided essentially radially within the flow channel. Their size is sufficient for the assembly and disassembly of the blades.
  • the blades 8 At their center-near end, the blades 8 have a bearing journal 9 which is mounted in a bearing 10 formed in the hub 4.
  • the guide vanes 8 are rigidly connected to a guide vane pin 11, which is guided through a sealing and bearing arrangement 12, which is arranged tightly in the cover 7. It comprises a bearing 13 with spherical surfaces, a grease-filled sealing section on the medium side 14 and an atmosphere-side seal 15.
  • the sealing section 14 has a relatively large play in order to allow misalignment of the guide vane pin 11.
  • the bearing 13 is insensitive to misalignments.
  • the entire sealing and bearing device 12 and the pin 11 can be dimensioned relatively light because the guide vane is not overhung.
  • the adjusting device comprises an actuating lever 16 engaging the pin 11, which can be pivoted from an adjusting ring 17 via a link 18.
  • the adjusting ring 17, which is composed of two partial rings 19, 20, is rotatably mounted on the housing 3 by means of the rolling elements 21. It connects the control levers 16 of all guide vanes so that they are always adjusted simultaneously and by the same amounts.
  • the position of the adjusting ring 17 is determined via a link 22 from the position of a lever 23, which is the output member of an actuating gear 24, which is fastened to the housing 3 parallel to the axis and, in the exemplary embodiment, is formed by the sliding wedge gear mentioned above.
  • Its drive shaft 25 is continuous. This means that in a series arrangement of several swirl regulators, as indicated in FIG. 1, only one drive shaft train needs to be provided, because the output end 26 of the drive shaft of an upstream transmission 27 can be connected to the input end 28 of the downstream transmission 29.
  • the gearbox has a large transmission ratio (for example 1:85) and is self-locking, so that the drive shaft can be designed easily and can contain joint pieces without any significant effort.
  • the gears are filled with grease and sealed, so that the entire arrangement can be arranged below the liquid level if necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Claims (4)

  1. Dispositif de réglage de déflexion pour pompes centrifuges comportant un conduit d'écoulement inclus dans un carter et plusieurs aubes directrices (8) qui sont disposées en direction essentiellement radiale dans ce conduit et qui sont montées chacune sur le carter (3) par une extrémité et sur un moyeu fixe (4) par l'autre extrémité, ainsi qu'un dispositif de réglage pour les aubes directrices, caractérisé en ce que le point de montage du côté carter est situé sur une pièce formant bouchon (7) qui ferme une ouverture (6) dans le carter (3) correspondant aux dimensions en coupe transversale des aubes directrices (8), et est réalisé avec une tolérance aux défauts d'alignement.
  2. Dispositif de réglage de déflexion selon la revendication 1, caractérisé en ce que le dispositif de réglage comprend une couronne (17) montée sur roulement pour le réglage en commun des aubes directrices (8).
  3. Dispositif de réglage de déflexion selon la revendication 1 ou 2, caractérisé en ce que le dispositif de réglage comprend un jeu d'engrenages de positionnement (24) avec un arbre menant (25) qui le traverse de part en part.
  4. Dispositif de déflexion selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le dispositif de réglage comprend un jeu d'engrenages de positionnement à autoblocage (24) ayant un fort rapport de réduction.
EP92106894A 1991-05-24 1992-04-22 Ajusteur de déflexion pour pompes centrifuges Expired - Lifetime EP0514677B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT92106894T ATE102297T1 (de) 1991-05-24 1992-04-22 Drallregler fuer kreiselpumpen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4117025 1991-05-24
DE4117025A DE4117025A1 (de) 1991-05-24 1991-05-24 Drallregler fuer kreiselpumpen

Publications (3)

Publication Number Publication Date
EP0514677A2 EP0514677A2 (fr) 1992-11-25
EP0514677A3 EP0514677A3 (en) 1992-12-16
EP0514677B1 true EP0514677B1 (fr) 1994-03-02

Family

ID=6432358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92106894A Expired - Lifetime EP0514677B1 (fr) 1991-05-24 1992-04-22 Ajusteur de déflexion pour pompes centrifuges

Country Status (7)

Country Link
US (1) US5269649A (fr)
EP (1) EP0514677B1 (fr)
JP (1) JPH05149299A (fr)
KR (1) KR920021874A (fr)
AT (1) ATE102297T1 (fr)
DE (2) DE4117025A1 (fr)
ES (1) ES2051604T3 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6205779B1 (en) 1999-03-31 2001-03-27 Daimlerchrysler Corporation Integral hub driven gears
US6357228B1 (en) 1999-03-31 2002-03-19 Daimlerchrysler Corporation Sleeveless support of pump gear drive
EP1719887A1 (fr) * 2005-05-04 2006-11-08 ABB Turbo Systems AG Régulation de l'alimentation d'un moteur à combustion
US7530782B2 (en) * 2005-09-12 2009-05-12 Pratt & Whitney Canada Corp. Foreign object damage resistant vane assembly
US7413400B2 (en) * 2005-09-12 2008-08-19 Pratt & Whitney Canada Corp. Vane assembly with grommet
US7637718B2 (en) * 2005-09-12 2009-12-29 Pratt & Whitney Canada Corp. Vane assembly with outer grommets
US7628578B2 (en) 2005-09-12 2009-12-08 Pratt & Whitney Canada Corp. Vane assembly with improved vane roots
EP2370192A1 (fr) * 2008-11-27 2011-10-05 Basf Se Dispositif de séparation par distillation
US8696311B2 (en) 2011-03-29 2014-04-15 Pratt & Whitney Canada Corp. Apparatus and method for gas turbine engine vane retention
FR3019855B1 (fr) * 2014-04-14 2016-04-01 Airbus Operations Sas Ensemble propulsif d'aeronef comprenant une vanne d'air a debit variable
WO2016057205A1 (fr) * 2014-10-07 2016-04-14 Borgwarner Inc. Soupape de dérivation pour compresseur
CN105782122B (zh) * 2016-04-01 2018-02-27 江苏大学 一种用于自动调节轴流泵导叶叶片角度的调节器
CN105927588B (zh) * 2016-04-29 2019-09-13 沈阳透平机械股份有限公司 增压压缩机入口导叶调节装置及方法
CN114109843A (zh) * 2021-12-15 2022-03-01 合肥恒大江海泵业股份有限公司 一种前置导叶可调节的双向贯流泵
CN114483629B (zh) * 2022-01-13 2023-07-28 江苏海拓宾未来工业科技集团有限公司 一种多轴多级式氢燃料高速离心压缩机

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
GB146452A (en) * 1919-07-03 1921-10-03 Lewis Ferry Moody Improvements in rotary pumps of the substantially axial flow type
GB500965A (en) * 1937-08-18 1939-02-20 Aerex Ltd Improvements relating to screw impeller fans and pumps
US2500070A (en) * 1945-06-15 1950-03-07 Westinghouse Electric Corp Multistage, axial flow, gas compressor
US2606713A (en) * 1948-04-26 1952-08-12 Snecma Adjustable inlet device for compressors
GB671607A (en) * 1950-05-05 1952-05-07 Davidson & Co Ltd Improvements in or relating to multi-stage fans, pumps and the like
CH320875A (de) * 1954-03-12 1957-04-15 Escher Wyss Ag Regeleinrichtung für das Leitrad einer Wasserturbine oder Kreiselpumpe
US2854211A (en) * 1955-11-25 1958-09-30 Gen Electric Adjustable vane arrangement for fluid flow machinery
GB894826A (en) * 1958-03-26 1962-04-26 Bristol Siddeley Engines Ltd Improvements in or relating to adjustable pitch guide blades in axial-flow compressors
US3377799A (en) * 1966-01-03 1968-04-16 Gen Electric Mechanical integrators and control systems employing same
DE1926338A1 (de) * 1969-05-23 1970-12-17 Motoren Turbinen Union Vorrichtung zur Lagerung schwenkbarer Leitschaufeln von thermischen Turbomaschinen
FR2282550A1 (fr) * 1974-08-21 1976-03-19 Shur Lok International Sa Stator de compresseur a carter monobloc
DE2447891A1 (de) * 1974-10-08 1976-04-22 Sigma Lutin Schaufelgitter zur regelung der foerderhoehe von ein- oder mehrstufigen zentrifugal- oder reversierpumpen
US4531372A (en) * 1982-08-27 1985-07-30 Comptech, Incorporated Cryogenic pump having maximum aperture throttled part
DE3613857A1 (de) * 1986-04-24 1987-10-29 Kuehnle Kopp Kausch Ag Axialdrallregler fuer einen abgasturbolader fuer verbrennungsmotoren
FR2610673B1 (fr) * 1987-02-05 1991-03-15 Snecma Turboreacteur multiflux a couronne externe de redresseur de soufflante frettee sur le carter
US4734007A (en) * 1987-03-03 1988-03-29 Rolls-Royce Plc Fan casing and fan blade loading/unloading
GB2201732A (en) * 1987-03-03 1988-09-07 Rolls Royce Plc Fan casing and fan blade loading/unloading
DE4002548C3 (de) * 1990-01-29 1995-01-26 Kuehnle Kopp Kausch Ag Axialdrallregler für großvolumige Radialverdichter

Also Published As

Publication number Publication date
KR920021874A (ko) 1992-12-18
DE59200075D1 (de) 1994-04-07
ES2051604T3 (es) 1994-06-16
ATE102297T1 (de) 1994-03-15
JPH05149299A (ja) 1993-06-15
DE4117025A1 (de) 1992-11-26
EP0514677A2 (fr) 1992-11-25
EP0514677A3 (en) 1992-12-16
US5269649A (en) 1993-12-14

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