EP0299280B1 - Verstellvorrichtung eines Verdichters - Google Patents

Verstellvorrichtung eines Verdichters Download PDF

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Publication number
EP0299280B1
EP0299280B1 EP88110360A EP88110360A EP0299280B1 EP 0299280 B1 EP0299280 B1 EP 0299280B1 EP 88110360 A EP88110360 A EP 88110360A EP 88110360 A EP88110360 A EP 88110360A EP 0299280 B1 EP0299280 B1 EP 0299280B1
Authority
EP
European Patent Office
Prior art keywords
cranks
crank
adjusting device
coupling links
pivot pins
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
EP88110360A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0299280A1 (de
Inventor
Stephan Hotz
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.)
Howden Turbo GmbH
Original Assignee
Siemens Turbomachinery Equipment GmbH
Kuehnle Kopp and Kausch AG
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 Siemens Turbomachinery Equipment GmbH, Kuehnle Kopp and Kausch AG filed Critical Siemens Turbomachinery Equipment GmbH
Publication of EP0299280A1 publication Critical patent/EP0299280A1/de
Application granted granted Critical
Publication of EP0299280B1 publication Critical patent/EP0299280B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
    • F01D17/165—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes for radial flow, i.e. the vanes turning around axes which are essentially parallel to the rotor centre line
    • 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
    • F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet

Definitions

  • the invention relates to an adjusting device of a radial compressor according to the features specified in the preamble of claim 1.
  • Such an adjustment device for a radial compressor is known from EP-A-43 017, the guide vanes of which can be adjusted together.
  • the pivots are rotatably connected to cranks, which are designed as one-armed levers and are arranged in a radial plane.
  • the individual cranks are connected to coupling elements which contain an adjusting ring arranged concentrically to the longitudinal axis of the radial compressor.
  • the cranks each contain an elongated hole in which a bolt, which is connected to the adjusting ring, engages.
  • the coupling links are adjustable in length, whereby a not inconsiderable space requirement and manufacturing effort are required.
  • the invention has for its object to develop the adjustment device in such a way that a functionally reliable adjustment of the guide vanes is made possible with little design effort.
  • the adjustment device should require a small construction volume and allow easy installation in confined spaces on the outlet side. The jamming or even blocking of the adjusting device or the guide vanes should be reliably avoided, a high level of functional reliability being ensured under all operating conditions, in particular taking thermal stresses and manufacturing tolerances into account.
  • the adjustment device should not require any additional construction volume for the radial compressor, but should advantageously be able to be arranged on the outlet side in the area of the diffuser in an existing annular space. Complex components and their storage in relation to the housing should be avoided as far as possible.
  • the proposed adjustment device is characterized by a simple construction and ensures an extremely space-saving construction.
  • the space available in the area of the diffuser of the radial compressor can be used in a surprisingly simple way for the arrangement and reception of the proposed cranks and coupling elements.
  • Instead of a complex and large control ring only relatively small coupling links are provided for mutual coupling of the cranks that are adjacent in the circumferential direction. Cranks that are adjacent in the circumferential direction are alternately connected to one another via the outer coupling member, which is articulated on the outer crank arms of the crank pairs formed in this way, and via the second coupling member articulated on the respective inner crank arms.
  • cranks are non-rotatably connected to the respective trunnion, a releasable, adjustable connection being provided according to the invention for the purpose of adjusting the guide vanes.
  • a releasable, adjustable connection being provided according to the invention for the purpose of adjusting the guide vanes.
  • cranks corresponding to one another or their crank arms of the respective crank pairs are pivoted by the same angle with respect to the axial plane running through the respective pivot, depending on the respective adjustment angle of the guide vanes.
  • the cranks, which are aligned in parallel, and the coupling links are easily connected to one another by means of bolts.
  • the inner crank arm and the outer crank arm can have the same crank length. All cranks are designed in the same way, but are arranged alternately on the guide vanes, which are rotated by 180 degrees.
  • the first and second coupling links are also designed to match, and the coupling links are also articulated to the respective crank by means of correspondingly configured bolts.
  • the adjustment device therefore basically contains only three differently designed components, namely two-armed cranks, coupling links and bolts, which results in not insignificant cost advantages in production. Even with very large radial compressors, whose impellers have a diameter of have a few meters, the proposed adjustment device can be produced at low cost, and a comparatively simple assembly is also ensured.
  • the two-armed cranks are connected in a rotationally fixed manner to the respective pivot pin by means of a frictional connection.
  • the adjustment device can be installed during installation without first having to pay attention to the respective angular position of the pivot pins and guide vanes. Then the angular position of the rotating blades can be set exactly and the frictional connection to the adjustment device or the two-armed crank can be established.
  • a conical press fit with two conical, interlocking and braced sleeves has proven to be particularly useful.
  • the housing of the radial compressor has sleeve-shaped projections directed towards the annular space, through which the pivots mentioned are carried out.
  • the coupling links all lay in a common radial plane, which lies in front of the radial plane with the cranks.
  • the coupling links like the cranks, are formed in one piece, with all coupling links, namely both the outer and the inner coupling links, being of identical design.
  • FIG. 1 schematically shows a tell, specifically in a quadrant, of the adjusting device for guide vanes 2, which are arranged at a distance from one another in a ring around a longitudinal axis 4 at a pitch angle 6.
  • the guide vanes 2 shown here in dashed lines for the sake of clarity are pivotably arranged in a housing of a radial compressor by means of pivot pins 8.
  • a two-armed crank 10 is rotatably connected to each of the pivots 8.
  • the cranks 10 each have an outer crank arm 12 directed outwards in the radial direction and an inner crank arm 14 directed inwards. Between the axis 16 of the outer crank arm 12 and the axis 18 of the inner crank arm 14 there is an angle 20 which is the same size as the pitch angle 6.
  • cranks 16 and 18 each run through the pivot pin 8 and through bolts 22, via which the mutual articulation of adjacent cranks takes place by means of a first coupling element 24 or a second coupling element 26.
  • Cranks which are adjacent in the circumferential direction and whose outer crank arms 12 are articulated to one another by the first coupling member 24 are referred to below as a crank pair 28.
  • the distance 30 of the bolts 22, more precisely their axes of rotation, per pair of cranks is the same as the distance of the pivots 8 or their axes of rotation. Irrespective of the respective angular position, the axes 16 of the outer crank arms 12 of each crank pair 28 are always parallel.
  • cranks which are each articulated with the second coupling element can of course also be referred to as a crank pair.
  • the second coupling member 26 has a spacing 22 between the bolts 22, which in turn corresponds to the spacing of the associated pivots 8 and consequently is the same size as the above-mentioned distance 30 of the coupling pair 28.
  • the outer crank arms 12 and the inner crank arms 14 have the same crank length 34.
  • cranks and the coupling elements On the basis of this proposed design and arrangement of the cranks and the coupling elements, it is ensured that the crank arms of adjacent cranks 10, which are connected to the respective coupling element, are always aligned parallel to one another.
  • cranks that are adjacent in the circumferential direction are each designed to match, the whirl 20 corresponding to the corrugation angle 6; Adjacent cranks 10 are only aligned relative to one another by 180 degrees and correspondingly connected to the pivot pins 8 of the associated guide vane 2.
  • cranks 10 are now pivoted by the angle 38 with respect to the axial plane 36 each running through the pivot pin 8.
  • the corresponding cranks or crank arms of the respective crank pairs 28 always assume the same angular position in relation to the respective axial plane 36, which can be changed with the respective angular position of the guide vanes. Since the distances 30 and 32 are each the same as the corresponding distances between the pivot axes of the guide vane 2 which are predetermined by the pivots 8, the outer crank arms 12 of each crank pair 28 are as parallel as the inner crank arms 14 of the adjacent crank pairs 28 expressly stated that all coupling links 26 are identical.
  • the adjustment movement can be initiated, for example, via one of the cranks 10, which has an extension 40.
  • An adjustment lever or the like can be articulated on this crank extension 40 in order to be able to make the desired adjustment of the guide vanes 2 by movement in the direction of the arrow 42.
  • one of the coupling links may be missing at one point on the circumference between two adjacent cranks. Stiffness or even jamming of the adjustment device is avoided.
  • the "chain" formed from the cranks and the coupling links does not have to be closed over the circumference, but can be interrupted at one point according to the invention. This simplifies production and assembly, since length compensation can take place at this open location.
  • FIG. 3 shows an enlarged section through a tell of a radial compressor with the adjusting device, essentially in an axial plane, the section plane being indicated by line 111 according to FIG. 1.
  • a compressor housing 46 the guide vane 2 on the pressure side is shown here, which is pivotably mounted in the compressor housing 46 about the pivot pin 8.
  • the medium flows to the guide vane 2 of the guide apparatus in order to push in the spiral housing, which surrounds the compressor housing 46 in the region of the peripheral surface 50, in the usual way via the outlet opening 47.
  • the pivot pin 8 projects into an inner annular space 52 of the compressor housing 46, in which annular space 52, according to the invention, the adjusting device is arranged using the space available there.
  • the housing 46 has an expedient socket-shaped extension 49 which extends into the annular space 52.
  • the crank 10 is non-positively connected in the annular space 52 to the pivot in the context of this invention.
  • This connection is designed here as a conical press fit with two conical sleeves 54, 56.
  • the inner sleeve 54 bears on the one hand against an annular shoulder 57 of the pivot pin 8, while the second conical sleeve 56 is pushed over the conical sleeve 54 from the free other end.
  • the pivot 8 has a thread 58 at the free end, into which a nut 60 is screwed, by means of which the two sleeves 54, 56 are braced in order to produce the frictional or non-positive connection of the crank 10.
  • the bolt 22 is pressed with a press fit, to which the first, outer coupling member 24 is articulated.
  • the second coupling member is also articulated on the inner lever arm of the crank 10, as is indicated by the dash-dotted line 62.
  • All coupling elements, namely both the outer and the inner coupling elements of the adjusting device lie in the same common radial plane 64.
  • This radial plane 64 lies in the direction of view of the free end of the pivot 8 in front of the radial plane 53 with the cranks 10. Taking into account the limited space
  • the adjustment device can be assembled in the annular space 52 with comparatively little effort, since no bulky, large control rings, toothed segments, gears or the like are necessary, but only the comparatively small parts of the adjustment device explained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP88110360A 1987-07-06 1988-06-29 Verstellvorrichtung eines Verdichters Expired - Lifetime EP0299280B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3722253 1987-07-06
DE19873722253 DE3722253A1 (de) 1987-07-06 1987-07-06 Verstellvorrichtung eines radialverdichters

Publications (2)

Publication Number Publication Date
EP0299280A1 EP0299280A1 (de) 1989-01-18
EP0299280B1 true EP0299280B1 (de) 1991-03-20

Family

ID=6330980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88110360A Expired - Lifetime EP0299280B1 (de) 1987-07-06 1988-06-29 Verstellvorrichtung eines Verdichters

Country Status (6)

Country Link
US (1) US4836747A (enrdf_load_stackoverflow)
EP (1) EP0299280B1 (enrdf_load_stackoverflow)
JP (1) JPS6435099A (enrdf_load_stackoverflow)
DD (1) DD271360A5 (enrdf_load_stackoverflow)
DE (2) DE3722253A1 (enrdf_load_stackoverflow)
DK (1) DK372988A (enrdf_load_stackoverflow)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5028208A (en) * 1989-01-10 1991-07-02 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Nozzle blade angle adjustment device for variable geometry turbocharger
DE4309636C2 (de) * 1993-03-25 2001-11-08 Abb Turbo Systems Ag Baden Radialdurchströmte Abgasturboladerturbine
DE4309637A1 (de) * 1993-03-25 1994-09-29 Abb Management Ag Radialdurchströmte Abgasturboladerturbine
JP3482196B2 (ja) * 2001-03-02 2003-12-22 三菱重工業株式会社 可変容量タービンの組立・調整方法およびその装置
EP1637700B1 (de) * 2004-09-21 2008-03-26 ABB Turbo Systems AG Leitschaufelvorrichtung einer Strömungsmaschine und Strömungsmaschine
JP2006207526A (ja) * 2005-01-31 2006-08-10 Mitsubishi Heavy Ind Ltd 可変容量型排気ターボ過給機及び可変ノズル機構構成部材の製造方法
US8033782B2 (en) * 2008-01-16 2011-10-11 Elliott Company Method to prevent brinelling wear of slot and pin assembly
US8267647B2 (en) * 2008-07-09 2012-09-18 Borgwarner Inc. Variable geometry turbocharger lower vane ring retaining system
US20120020776A1 (en) * 2010-07-26 2012-01-26 Colson Darryl A Variable diffuser actuation linkage for a cabin air compressor
FR3031772B1 (fr) * 2015-01-19 2017-01-13 Snecma Systeme de commande d’aubes a calage variable pour une turbomachine
DE102018126589A1 (de) * 2018-10-25 2020-04-30 Ihi Charging Systems International Germany Gmbh Verstellbares Leitschaufelsystem für einen Abgasturbolader

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043017A1 (de) * 1980-06-25 1982-01-06 Atlas Copco Aktiebolag Leitschaufelverstellvorrichtung an Radialturbokompressoren

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1989413A (en) * 1929-10-31 1935-01-29 B F Sturtevant Co Centrifugal fan
GB578034A (en) * 1944-08-10 1946-06-12 William Warren Triggs Improvements in and relating to hydraulic turbines applicable also to centrifugal pumps
NL99624C (enrdf_load_stackoverflow) * 1955-08-29
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
US3069070A (en) * 1961-11-14 1962-12-18 Worthington Corp Diffuser vane system for turbomachinery
FR1337456A (fr) * 1962-08-02 1963-09-13 Neyrpic Ets Perfectionnements aux dispositifs de réglage des turbines hydrauliques
DE2050593A1 (de) * 1970-10-15 1972-04-20 Nevsky Mashinostroitelny Z Im Leitschaufel-Verstelleinrichtung
AT321225B (de) * 1972-03-07 1975-03-25 Le Metallichesky Zd Im Xxii Si Leitapparat einer Wasserkraftmaschine
DE2403113C3 (de) * 1974-01-23 1979-04-19 Gutehoffnungshuette Sterkrade Ag, 4200 Oberhausen Vorrichtung zum Verstellen der Drallschaufeln eines Turboverdichters

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043017A1 (de) * 1980-06-25 1982-01-06 Atlas Copco Aktiebolag Leitschaufelverstellvorrichtung an Radialturbokompressoren

Also Published As

Publication number Publication date
JPS6435099A (en) 1989-02-06
DE3722253C2 (enrdf_load_stackoverflow) 1989-09-21
DD271360A5 (de) 1989-08-30
EP0299280A1 (de) 1989-01-18
US4836747A (en) 1989-06-06
DK372988D0 (da) 1988-07-05
DE3722253A1 (de) 1989-01-26
DK372988A (da) 1989-01-07
DE3862072D1 (de) 1991-04-25

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