EP0196450A1 - Régulateur de la résistance d'un courant d'air - Google Patents

Régulateur de la résistance d'un courant d'air Download PDF

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Publication number
EP0196450A1
EP0196450A1 EP86102392A EP86102392A EP0196450A1 EP 0196450 A1 EP0196450 A1 EP 0196450A1 EP 86102392 A EP86102392 A EP 86102392A EP 86102392 A EP86102392 A EP 86102392A EP 0196450 A1 EP0196450 A1 EP 0196450A1
Authority
EP
European Patent Office
Prior art keywords
guide
adjusting
pins
controller according
swirl
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
EP86102392A
Other languages
German (de)
English (en)
Other versions
EP0196450B1 (fr
Inventor
Lothar Dipl.-Ing. Thomzik
Erwin Dipl.-Ing. Lange
Gert Ing.-Grad. Hecht
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.)
Siemens AG
Original Assignee
Siemens 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 AG filed Critical Siemens AG
Publication of EP0196450A1 publication Critical patent/EP0196450A1/fr
Application granted granted Critical
Publication of EP0196450B1 publication Critical patent/EP0196450B1/fr
Expired 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
    • F01D17/162—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes for axial flow, i.e. the vanes turning around axes which are essentially perpendicular 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
    • F04D29/52—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
    • F04D29/563—Fluid-guiding means, e.g. diffusers adjustable specially adapted for elastic fluid pumps

Definitions

  • the invention relates to a swirl regulator according to the preamble of claim 1;
  • a swirl regulator is known from GB-PS 496 017.
  • the swirl regulator is usually arranged in the inlet nozzle of a fan, blower or the like.
  • the guide vanes are rotatably fastened to a spoke-like mounting linkage for the hub by means of tabs screwed onto the guide vanes.
  • An adjusting lever is attached to each radially inner tab, on the free end of which an angled cam is provided.
  • the rotary movement of the adjusting ring is performed via Transfer the grooves on the surface, in which the cams slide, to the control levers.
  • the adjusting ring is frustoconical with a guide plane inclined at a certain angle to the cams.
  • the adjusting lever itself is shaped like an arc and the cams are attached to it such that its longitudinal axis coincides with it cuts the longitudinal axis of the mounting linkage in the longitudinal axis of the adjusting ring.
  • the actuating ring is actuated via a radially arranged lever, which is connected to a guide on the outer edge of the inlet nozzle surrounding the guide vanes and has the stops for the final setting positions of the guide vanes
  • DE-AS 26 37 222 discloses a swirl regulator with an encapsulated adjusting ring arranged within a bearing housing which receives the radially inner ends of the guide vanes.
  • a drive linkage which is guided inwards through a bore in the bearing housing and which is articulated on the adjusting ring is also used the guide blades connected to the dumbbell-shaped actuating lever, the free ends of which are guided in the adjusting ring are each designed in the form of a spherical head.
  • the end of each actuating lever facing away from the ball head is in each case pushed radially through from the inside through a bore in the bearing housing and is then connected to the radially inner end of the guide vane outside the bearing housing.
  • the invention has for its object to provide a swirl controller which ensures precise and easy adjustment of the guide vanes despite simple manufacture
  • a swirl controller enables, by means of the pins, which can be manufactured as separate construction parts in a simple manner and which can be mounted on the guide vanes or the adjusting ring, with little manufacturing effort, great ease of movement between the adjusting and guiding means for adjusting the guide vanes and thus for adjusting the desired pre-twist the inlet flow.
  • This smooth operation is ensured even after a long period of operation, since undercuts and large guide surfaces between the adjusting and guiding means are avoided, which would otherwise increase the friction and thus the necessary actuating forces due to contamination.
  • the guide pins or set pins are cylindrical in a particularly simple manner in terms of production and assembly technology and at the same time ensure a mutually tilt-free movement.
  • guide pins or set pins are inserted into corresponding openings in the guide vane or the adjusting ring and are screwed or welded there consists according to an embodiment of the invention only of a guided on the outer surface of the hub, rotatably mounted stamped sheet metal part with, for example.
  • a driving frame facing the adjusting ring is formed on its radially inner end, to which an adjusting pin is attached.
  • the guide pins or the adjusting pins are cylindrical, the guide slots expediently arranged essentially in the axial direction and the adjusting pins essentially in the radial direction, or two guide pins per guide vane on the adjusting ring and an adjusting pin engaging between the guide pins the guide vane are attached directly or indirectly.
  • the adjusting pin is arranged laterally offset relative to the radial surface symmetry line of the guide vanes.
  • the closed position of the guide vanes can be achieved without separate constructive measures in that between the adjusting pins and the associated guide pins in the middle position of the rotatable guide vanes, such a play is provided that the guidance between the adjusting pins and the assigned guide pins in each of the two end positions of the adjustable ones Guide vanes in the sense of an end stop is without play
  • a radially projecting tab serving for its rotatable mounting is attached to each radial end of each guide vane; it is provided according to an embodiment of the invention that the guide vane, the driving frame and the tabs are parts of a one-piece sheet metal stamped and bent part, so not only the adjusting ring, but also the guide vanes with tabs and possibly driving frame can be contour-stamped on numerically controlled machines by so-called nibbling will.
  • the punched tabs can either be bent slightly, eg semicircular, for rotatable guidance; A particularly simple and precise guidance results, however, if, according to one embodiment of the invention, a bearing journal is attached to each of the tabs of the guide vanes and in the hub of the swirl regulator or in an inlet nozzle of the associated fan blower or the like to the bearing journal on the radial inner or radially outer
  • Corresponding bearing bushes are provided at the end of the guide vanes and the bearing journals and / or the bearing bushes each consist of plastic with high sliding properties, for example polyamide or Teflon.
  • each guide vane is not or is inclined by an axial angle of more than 6 ° with respect to its radial surface symmetry line, and when the guide vanes are open, the larger of the parts of the guide vane identified by the connecting line Impeller of the downstream fan, blower or the like.
  • a tensile-loaded Bowden cable is provided for the actuation of the reinforcing ring according to one embodiment of the invention, without a conventional rigid drive linkage.
  • the Bowden cable advantageously allows the adjustment force to be introduced at any point in the swirl regulator construction. Particularly when using double-sided fans with swirl regulators in both inlet nozzles, a Bowden cable adjustment is expediently provided for adjusting both swirl regulators in the same direction.
  • guide vanes 2 produced as sheet metal stamped and bent parts are arranged radially around a hub 4; For the sake of clarity, only a single guide vane 2 is shown in each case.
  • a radially projecting tab 21 or 22 is stamped in one piece at its radially inner or radially outer end.
  • each guide vane 2 has at its radially inner end a drive frame 23 which is likewise stamped in one piece and is then bent axially.
  • the radially inner tab 21 is punched out centrally on the driving frame 23 at its end facing the guide vane 2; At the free axially bent end of the driving frame 23, laterally offset from the connecting line 25 between the tabs 21, 22, an adjusting pin 7 directed parallel to it is fastened
  • the actuating pin 7 engages between two essentially axially directed guide pins 5, 6, which are inserted into fitting openings 31 of an adjusting ring 3 and, for example, are screwed or welded.
  • the adjusting ring 3 is mounted between two sliding disks 16 and is axially pressed and fixed against a shoulder of the hub via an expanding ring 17 which can be fixed in the hub with the interposition of a corrugated spring 11.
  • the central adjustment of all guide vanes 2 is carried out by turning the adjusting ring 3 by means of a Bowden cable 10, which is articulated via a ball joint 19 in an opening 32 of the adjusting ring 3.
  • the Bowden cable 10 is tension-loaded by means of a spring 18, such that a clear adjustment of the guide vanes 2 in Standstill is possible.
  • the guide vane 2 is closed in FIG. 1, ie in the angular position 0 °, shown.
  • the play pins 5, 6 carry the guide pins 5, 6 out of the play-free closing stop position.
  • the setting pin 7 first moves closer to the adjusting ring 3 between the guide pins 5, 6 during the opening process. From the position in which the setting pin 7 is exactly radial to the hub 4, the setting pin 7 begins to move back towards the guide vane 2 as it rotates further. In this position of the just half-open swirl controller, the greatest play between the adjusting pin 7 on the one hand and guide pins 5, 6 on the other hand is reached. In the angular position 90 °, in which the guide vanes 2 are in the gel position, the opening stop has been reached and that Set pin 7 now kept free of play between the guide pins 5, 6.
  • the actuating and guide pins 7, 5, 6 shown in the exemplary embodiment are cylindrical in shape; As a result, particularly simple manufacture is achieved in order to achieve mutual point-to-point contact in operation.
  • bearing journals 12, 13 are plugged onto their flat tabs 21, 22 and into corresponding bearing bushes 14, 15 in the hub 4 or an inlet nozzle 9 (FIG. 4). are rotatably inserted.
  • the radially inner bearing bush 14 is inserted into an axial, U-shaped cutout 41 of the hub 4, which is open on the end side in the assembly direction and is fixed by a retaining ring 1 placed opposite on the end side and closing off all the cutouts. It is thus possible to insert the guide vanes 2 into the inlet nozzle 9 only after the hub 4 has been assembled.
  • the connecting line 25 between the radially outer and the radially inner rotatable mounting of each guide vane 2 is inclined by an axis angle ⁇ of more than 6 ° with respect to its radial surface symmetry line 24 and when the guide vanes 2 are open in each case the larger of the parts of the guide vane 2 identified by the connecting line 25 faces the impeller of the downstream fan, blower or the like, and that on the other hand the Bowden cable 10 is tension-loaded by a spring 18 securing the open position of the guide vanes 2.
  • each guide vane 2 coincides with its radial surface symmetry line 24
  • the Bowden cable 10 is expediently by a locking the closed position of the guide vanes 2 spring 18 tensile.
  • the attachment of the swirl controller to a stand 51 is shown in FIG. 3.
  • the hub 4 is screwed to a holding plate 8, which is fastened to the stand 51 by means of a fastening bracket 50.
  • An elongated dimensioning of the holes for the connecting screws enables the holding plate 8 to be centered exactly.
  • the stand 51 can be located as a stem in front of the inlet nozzle 9. This possibility in particular facilitates the retrofitting of the swirl regulator, which then protrudes into the inlet nozzle 9, as it were.
  • the bearing 20 serves to receive and hold the drive shaft of the impeller of the fan, blower or the like.
  • Fig. 4 shows a part of the inlet nozzle 9 of the fan.
  • the outer bearing bushes 15 for the guide vanes 2 are used here.
  • Bores 91 in the inlet nozzle 9 and bores 81 in the holding plate 8 serve to hold assembly tools.
  • This assembly tool which in the simplest case can be formed from flat bars, holds the holding plate 8 in position during the construction of the swirl regulator and is removed after the assembly has been completed

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP86102392A 1985-03-15 1986-02-24 Régulateur de la résistance d'un courant d'air Expired EP0196450B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3509430 1985-03-15
DE3509430 1985-03-15

Publications (2)

Publication Number Publication Date
EP0196450A1 true EP0196450A1 (fr) 1986-10-08
EP0196450B1 EP0196450B1 (fr) 1989-05-03

Family

ID=6265380

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102392A Expired EP0196450B1 (fr) 1985-03-15 1986-02-24 Régulateur de la résistance d'un courant d'air

Country Status (2)

Country Link
EP (1) EP0196450B1 (fr)
DE (1) DE3663175D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4237031C1 (de) * 1992-11-03 1994-02-10 Mtu Muenchen Gmbh Verstellbare Leitschaufel
DE4309636A1 (de) * 1993-03-25 1994-09-29 Abb Management Ag Radialdurchströmte Abgasturboladerturbine
DE10243103A1 (de) * 2002-09-17 2004-03-25 Rolls-Royce Deutschland Ltd & Co Kg Vorrichtung zur Verstellung von Kompressorschaufeln einer Gasturbine
CN101832297A (zh) * 2010-05-21 2010-09-15 上海理工大学 轴流风机及其风阀、冷却塔及空气冷却器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB664085A (en) * 1948-04-26 1952-01-02 Snecma Improvements in adjusting device for compressors
CH333663A (de) * 1955-06-17 1958-10-31 Schweizerische Lokomotiv Verstellbarer Leitschaufelkranz für Axialturbomaschinen, insbesondere Axialgasturbinen
US2985427A (en) * 1955-11-25 1961-05-23 Gen Electric Adjustable blading for fluid flow machines
US3089679A (en) * 1960-06-06 1963-05-14 Chrysler Corp Gas turbine nozzle suspension and adjustment
FR2362288A1 (fr) * 1976-08-18 1978-03-17 Gebhardt Gmbh Wilhelm Regulateur a helice a pas variable pour modifier l'ecoulement axial a travers des ventilateurs et autres appareils similaires

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB664085A (en) * 1948-04-26 1952-01-02 Snecma Improvements in adjusting device for compressors
CH333663A (de) * 1955-06-17 1958-10-31 Schweizerische Lokomotiv Verstellbarer Leitschaufelkranz für Axialturbomaschinen, insbesondere Axialgasturbinen
US2985427A (en) * 1955-11-25 1961-05-23 Gen Electric Adjustable blading for fluid flow machines
US3089679A (en) * 1960-06-06 1963-05-14 Chrysler Corp Gas turbine nozzle suspension and adjustment
FR2362288A1 (fr) * 1976-08-18 1978-03-17 Gebhardt Gmbh Wilhelm Regulateur a helice a pas variable pour modifier l'ecoulement axial a travers des ventilateurs et autres appareils similaires

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4237031C1 (de) * 1992-11-03 1994-02-10 Mtu Muenchen Gmbh Verstellbare Leitschaufel
EP0596386A1 (fr) * 1992-11-03 1994-05-11 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Aube statorique ajustable fabriqué à partir de plastique renforcé par des fibres
US5380152A (en) * 1992-11-03 1995-01-10 Mtu Motoren-Und Turbinen-Union Muenchen Gmbh Adjustable guide vane for turbines, compressors, or the like
DE4309636A1 (de) * 1993-03-25 1994-09-29 Abb Management Ag Radialdurchströmte Abgasturboladerturbine
US5518365A (en) * 1993-03-25 1996-05-21 Abb Management Ag Radial-flow exhaust gas turbocharger turbine with adjustable guide vanes
DE4309636C2 (de) * 1993-03-25 2001-11-08 Abb Turbo Systems Ag Baden Radialdurchströmte Abgasturboladerturbine
DE10243103A1 (de) * 2002-09-17 2004-03-25 Rolls-Royce Deutschland Ltd & Co Kg Vorrichtung zur Verstellung von Kompressorschaufeln einer Gasturbine
CN101832297A (zh) * 2010-05-21 2010-09-15 上海理工大学 轴流风机及其风阀、冷却塔及空气冷却器

Also Published As

Publication number Publication date
DE3663175D1 (en) 1989-06-08
EP0196450B1 (fr) 1989-05-03

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