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FR2542041A1 - Volumetric pump compressor - Google Patents

Volumetric pump compressor Download PDF

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Publication number
FR2542041A1
FR2542041A1 FR8303660A FR8303660A FR2542041A1 FR 2542041 A1 FR2542041 A1 FR 2542041A1 FR 8303660 A FR8303660 A FR 8303660A FR 8303660 A FR8303660 A FR 8303660A FR 2542041 A1 FR2542041 A1 FR 2542041A1
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FR
France
Prior art keywords
rotor
articulated
fact
elements
axis
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Granted
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FR8303660A
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French (fr)
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FR2542041B1 (en
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Priority to FR8303660A priority Critical patent/FR2542041B1/en
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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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/40—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C2/08 or F04C2/22 and having a hinged member
    • F04C2/44—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C2/08 or F04C2/22 and having a hinged member with vanes hinged to the inner member

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

Volumetric pump compressor with articulated vanes. It is characterised in that use is made of an external stator, a fixed external casing 1 assembled to two lateral plates, in which lateral grooves 4 and circular mortices are made, receiving a collar ring 2. The external rotor 2 (fig. 3) and these assemblies slide on anti-friction rollers 3 in their rotational movement; these anti-friction rollers are incorporated into the lateral plates 15 and mounted on roller bearings, fitted and set in to the outside of the lateral plates. The vanes 6 are articulated at their end to a shoe, by a pin 5 and slide with this shoe in a slot and mortice 4 in the shape of an arc of a circle and made on the inside lateral part of the lateral rings and collars. A mortice and slot 7, also in the shape of an arc of a circle following the curvature of the vane, is made on the vanes at their centre, over a predetermined sliding length; a pin 8 is assembled in a sliding fashion in this slot and mortice, this pin is attached at one of its ends to the intermediate ring 9, the lower part of the vanes being articulated to the central rotor 11 by means of a pin articulated to a fixed vane 10 fitted to the central rotor.

Description

DESCRIPTION
Compresseur pompe volumétrique.Caractérisé,par le fait; qu'on utilise;
Des palettes,simples articulées;à l'intérieur,d'un cylindre extérieur
Stator;assemblé;par des plaques latérales;sur lesquelles;sont aménagé -es,une ou deux rainures,encastrées dans ces plaques latérales,d'as- -semblaga;du cylindre extérieur earter,ou stator;dans ces rainures 2 Coulissent des couronnes ou colliers latéraux sur lesquels;pour le col -lier supérieur sont aménagées,des mortaises longitudinales;en are de cercle,suivant la courbure,du collier ou couronne latéral;avec un trou
Borgne;ou precé,de part en part du collier,ou couronne latéral,servant
Au passage;;de l'air ou liquide pour lubrifier les éléments en mouve- -ment; ainsi coulissent des sabots et axes;assemblés aux palettes dans Ces mortaises;aménagées sur les colliers ou couronnes latéraux; qui
Tournent sur des galets;montés sur des roulements extérieurs incorpor- -és à la partie extérieure des plaques d'assemblage;le collier ou cou -ronne inférieur comporte en des points précis des axes ;sur lesquels
Coulissent leF corps central des palettes,sur lequel est aménagé un D
Rainurage latéral; ou ces axes traversent la lumière en arc de cercle
Aménagée au centre de la palette suivant,la courbure de la palette ;
Permettre,une meilleure rigidôté de cette paletteO!lDoutes ces courons -nes ou colliers,tournent sur des galets,montés sur roulements;il peut etre utilisé soit,le principe de couronne,ou collier latéral supérieur
Indépendant,ou le système seul du collier ou couronne intermédiaire. DESCRIPTION
Volumetric pump compressor. Characterized by the fact; that we use;
Pallets, simple articulated; inside, an external cylinder
Stator; assembled; by side plates; on which; are arranged -es, one or two grooves, embedded in these side plates, as- -semblaga; of the outer cylinder earter, or stator; in these grooves 2 Slide crowns or lateral collars on which; for the upper collar -lier are fitted, longitudinal mortises; in a circle, according to the curvature, of the lateral collar or crown; with a hole
Blind; or preced, right through the collar, or lateral crown, serving
By the way ;; air or liquid to lubricate the moving elements; thus slide hooves and shafts; assembled with pallets in These mortises; fitted on necklaces or lateral crowns; who
Rotate on rollers; mounted on external bearings incorporated in the external part of the assembly plates; the collar or lower column has axes at specific points; on which
Slide the F central body of the pallets, on which is arranged a D
Lateral grooving; or these axes cross the light in an arc
Arranged in the center of the next pallet, the curvature of the pallet;
Allow, a better rigidity of this paletteO! LAll these crowns - rings or necklaces, rotate on rollers, mounted on bearings; it can be used either, the principle of crown, or upper lateral collar
Independent, or the only system of the necklace or intermediate crown.

Les palettes, sont articulées sur un rotor central excentré;par rapport
Au stator qui comporte une ouverture d'aspiration et une ouverture ; d'échappement;des palettes Inférieures; sont ajustées sur le rotor pour l'articulation des palettes centrales a leur partie inférieure;il @
Peut etre utilisé,de mème une couronne extérieure à lumières;encastré@
Dans les rainures aménagées sur les plaques d'assemblage latérales,du stator ,les parties extrêmes latérales de cette couronne coulissant, sur des galets encastrés dans les plaques d'assemblage'une seule palette;; DONS!,la partie supérieure,est articulée à la couronne et sa partie i- -férieure au rotor central,excentré transmettant le mouvement de rota -tion,du rotor central à la couronne latérale et au rotor extérieur les autres palettes ne sont articulées,qu'à leur partie inférieure;et plaquent; au stator extérieur;pendant la rotation sur sa face intérieu@ -re;ou sont aménagées des lumières; servant suivant,la phase de leur passage et en fonction du rapport volumétrique intérieur délimité,par la position des palettes;dans leur mouvement de rotation;à ltaspira -tion,ou l'échappement,des éléments compressés;le rotor central étant excentrd;par rapport,au stator faisant varier,l'angle des palettes par
DESCRIPTION
Rapport,au rotor @@térieur;et au rotor central excentré.Les palettes
Sont également;en deux sections;assemblées face à face;par des te -nons,et des mortaises,en queu d'aronde;ce qui les diffère des palet.The pallets are articulated on an eccentric central rotor; relative
The stator which has a suction opening and an opening; exhaust; Lower paddles; are adjusted on the rotor for the articulation of the central pallets at their lower part;
Can be used, similar to an exterior crown with lights; recessed @
In the grooves provided on the lateral assembly plates, of the stator, the lateral end parts of this sliding ring, on rollers embedded in the assembly plates of a single pallet; DONATIONS!, The upper part is articulated to the crown and its part i- -lower to the central rotor, eccentric transmitting the rotational movement, from the central rotor to the lateral crown and to the external rotor the other pallets are not articulated, than at their bottom; and tackle; to the external stator; during rotation on its interior face @ -re; or lights are fitted; serving according to the phase of their passage and according to the internal volumetric ratio delimited by the position of the pallets; in their rotational movement; at the suction, or exhaust, of the compressed elements; the central rotor being eccentric; by ratio, to the stator varying, the angle of the pallets by
DESCRIPTION
Report, to the @@ inner rotor; and to the eccentric central rotor.
Are also; in two sections; assembled face to face; by te -nons, and mortises, in dovetail; which differs from the puck.

-tes conventionnelles utilisées dans des domaines semblables; et sont également;rainurées;ou comportent,des lumières;en leur centre;placées
LOngitudinalement;en arc de cercle;en suivant la courbe de la palettt
Ces lumières longitudinales; sont destiaéessà recevoir un axe qui les
Traversent ;et reliés à la couronne ;intermédiaire;ou au sabot,coulis- -sant dans la mortaise aménagée,sur la couronne extérieure.Ces ensem -bles,fonctionnant ensemble,en parallèle;ou séparément les uns des t
Autres;ou individuellement;suivant l'option.Désignation,de la plan -che(1) figure (1)en (1)stator ou carter extérieur fixe;en (2)couron- -ne supérieure;en (5)galets supérieurs et inférieurs;en (4)rainure; ou mortaise de coulissement aménagée sur la couronne; ou collier latté -ral;en(5)axe supérieur de la palette;en (6)palette articulée,à ses
Deux extrémités;en(7)rainure ou mortaise en arc de cercle; aménagée . - conventional ones used in similar fields; and are also; grooved; or have lights; in their center; placed
LOngitudinally; in an arc; following the curve of the pallet
These longitudinal lights; are intended to receive an axis which
Cross; and connected to the crown; intermediate; or to the shoe, sliding in the fitted mortise, on the outer crown. These assemblies, working together, in parallel; or separately from each other
Others; or individually; depending on the option Designation, of the plank (1) figure (1) in (1) stator or fixed outer casing; in (2) upper crown; in (5) upper rollers and lower; in (4) groove; or sliding mortise fitted on the crown; or lathed collar -ral; in (5) upper axis of the pallet; in (6) articulated pallet, at its
Two ends; in (7) groove or mortise in an arc; fitted out.

Sur,la palette;en(8)axe de la couronne intermédiaire;en(9)couronne ou collier intermédiaire;en (10)palette inférieure; avec axe darti- -culation,auquel est accouplée;la partie inférieure,de la palette ;
Articulée;en(11)rotor eicentré; en(12) axe du rotor;en(13)ouverture ; d'aspiration; en(14)ouverture,de refoulement.En figure(2);en (1)car -ter extérieur,ou stator;en(2)couronne supérieire;en (3)galets;en(6) palettes;en (15) roulements extérieurs;avec plaque latérale d'assem -blage;en(16)cage et roulements;de l'axe du rotor.Fgure(3)de la plan -che (1)principe;avec une seule palette articulée motrice ;en (I)sta tor;carter extérieur;en(2)couronne;ou double rotor extérieur;en(3)
Galets; an (4)palettes; articulées libres; avec un seul trou d'axe;relie
Au rotor central excentre;en(5)axe de la palette fixe;en (6) palette
Fixe de rotation; avec un axe à chaque extrémité; en(7) ll1mière,aména- -gée sur le rotor extérieur; an (8) axe de retenue de la partie supé -rieure de la palette et d'assemblage;couronne et rotor -extérieur; en numéro(10)axe inférieur d'assemblage de la palette avec le rotor ;centr@l et Extérieur ;des attaches,du rotor central placées en périphérie;en(11)
Rotor central excentré;en (12) axe de rotor ;en (13) ouverture d'asp@- -ration;en (14) ouverture;de refoulement.Figure(4) vue en coupe;mème
Désignation que sur la figure (3).EnFigure(5) de la plancheunique(1)
Palette,assemblée;par tenons,et mortaises en queue d'arronde;en(5)
Trou d'axe supérieur de la palette;pour accoupler,au rotor extérieur ou,à la couronne;ou collier;en(6)palette assemblée;par les tenons et
Mortaises;en (17)tenon avec mortaise ;en queue d'aronde. On, the pallet; in (8) axis of the intermediate crown; in (9) intermediate crown or collar; in (10) lower pallet; with hinge pin, to which is coupled; the lower part of the pallet;
Articulated; in (11) eicentric rotor; in (12) axis of the rotor; in (13) opening; suction; in (14) opening, discharge.In Figure (2); in (1) outer casing, or stator; in (2) upper crown; in (3) rollers; in (6) pallets; in (15) external bearings; with side plate for assembly; in (16) cage and bearings; on the rotor axis. Figure (3) of the working plane (1) principle; with a single articulated drive pallet; in ( I) stator; outer casing; in (2) crown; or double outer rotor; in (3)
Pebbles; year (4) pallets; articulated free; with a single pin hole; connects
At the central rotor offset; at (5) axis of the fixed pallet; at (6) pallet
Fixed rotation; with an axis at each end; in (7) ll1mière, fitted on the outer rotor; an (8) retaining pin of the upper-upper part of the pallet and assembly; crown and rotor -outside; in number (10) lower axis of assembly of the pallet with the rotor; centr @ l and Outside; fasteners, of the central rotor placed on the periphery; in (11)
Eccentric central rotor; in (12) rotor axis; in (13) opening of asp @ - -ration; in (14) opening; of discharge. Figure (4) sectional view; meme
Designation as in figure (3) .Figure (5) of the floorboard (1)
Pallet, assembled; by tenons, and mortises in dovetail; in (5)
Pallet upper axle hole; for coupling, to the outer rotor or, to the crown; or collar; in (6) assembled pallet; by the pins and
Mortises; in (17) tenon with mortise; in dovetail.

Claims (9)

REVENDICATIONS 1 Compresseur,pompe volumétrique,à palettes articulées.Caractérisé,par1 Compressor, positive displacement pump, with articulated vanes. Characterized by Le fait; que les éléments,en mouvement; sont des palettes,simples ar The fact; that the elements, in movement; are pallets, simple ar --ticulées,à leurs extrémités et comportant une lumière,ou mortaise - twisted, at their ends and comprising a lumen, or mortise Longitudinale,en arc de cercle aménagée en leur centre;et dont la , Longitudinal, in an arc arranged in their center; and whose, Largeur et la longeur,varient en fonction de l'épaisseur ,de la di Width and length, vary depending on thickness, di -mensicn.de l'axe qui coulisse à l'intérieur; cet axe est ajusté,sur -mensicn.de the axis that slides inside; this axis is adjusted, on La couronne intermëdiaire l'entrainant,en rotation.Les palettes ar The intermediate crown driving it, in rotation. -ticulées,à leurs extrémités par des axes et trous que traversent ; -ticulated, at their ends by axes and holes through which they pass; Ces axes; sont également en deux parties,assemb-lées,entre elles face These axes; are also in two parts, assembled, facing each other à face;par des tenons,et des mortaises en queue d'aronde;leur partie to face; by tenons, and dovetail mortises; their part Supérieure,est reliée;à un sabot,par un axe;ce sabot,coulisse dans ; Upper, is connected; to a hoof, by an axis; this hoof, slides in; Une lumière,ou mortaise;en arc de cercle aménagée pas segments et A light, or mortise; in an arc formed by segments and Tronçons;sur les colliers ou couronnes latéraux; qui tournent sur des Sections; on necklaces or side crowns; who turn on Galets,et sont incorporés,aux rainurages aménagés,sur les plaques ; Rollers, and are incorporated, in the grooves, on the plates; D'assemblage latérales,du carter et da stator extérieur pour évitera Lateral assembly, casing and outside stator to avoid La friction des palettes sur le stator;les galets comportent, sur leur The friction of the vanes on the stator; the rollers have, on their Axe des roulements, incorporés;à la partie extérieure,des plaques , Bearing axis, incorporated; on the outside, plates, D'assemblage;la partie inférieure des palettes est rattachée et artie Assembly; the lower part of the pallets is attached and artie -culée, au rotor central excentré par rapport au stator,et au rotor -coupled, with the central rotor eccentric with respect to the stator, and the rotor Extérieur par un axe articulé aux, attaches et palettes fixes du rotor Exterior by an articulated axis to the fixed rotor attachments and paddles Central.Il, est utilisé, également un rotor extérieur comportant des Central.It is also used an external rotor with Lumières ;une seule palette articulée à ses extrémités,entraine,oe Lights; a single pallet articulated at its ends, leads, oe Rotor dans la rotation;;la partie inférieure de cette palette est rat Rotor in rotation; the lower part of this palette is rat -tachée au rotor central excentré,pour entrainer cette palette et le - stained with the eccentric central rotor, to drive this pallet and the Rotor extérieur en rotation les autres palettes ne sont reliées au Rotor outside rotor other pallets are not connected to the Rotor central excentré; que par leur articulation inférieure. Eccentric central rotor; only by their lower articulation. 2 Dispositif,selon la revendication(1@) Caractérisé,par le fait;que les2 Device according to claim (1 @) Characterized by the fact that the éléments qu constituent ces palettes,sont une plaque; dans laquelle, elements which constitute these pallets, are a plate; in which, Il est aménagé,une lumière,et mortaise centrale en arc de cercle. It is arranged, a light, and central mortise in an arc. 3 Dispositif, selon l'une des revendications (et2)Caractérisé,par le fait3 Device according to one of claims (et2) Characterized by the fact Que les éléments,qui constituent ces palettes; sont formés;par deux Let the elements, which constitute these pallets; are trained; by two Plaques ajustables;face à face;par des tenons et mortaises en queue Adjustable plates; face to face; by tail and mortise d'aronde. dovetail. 4 Dispositif, selon lune quelconque des revendications(1à3)Caractérisé, 4 Device, according to any of the claims (1 to 3) Characterized, Par le fait que les éléments qui constituent ces palettes,sont une By the fact that the elements which constitute these pallets, are a Plaque,avec un axe seulement,à la partie inférieure articulée,au rotor Plate, with only one axis, at the articulated lower part, at the rotor Central excentré; avec une seule palette articulée,à ses deux extrémités Central offset; with a single articulated pallet, at both ends l'inférieure,reliée,au rotor central;l'autre extrémité,reliée au rotor the lower end, connected to the central rotor; the other end, connected to the rotor Extérieur et à la couronne. Exterior and crown. 5 Dispositif, selon l'une quelconque des revendications(1à4)Caractérisé, 5 Device, according to any one of claims (1 to 4) Characterized, Revendications(5)par le fait,que les éléments ;qui constituent les col Claims (5) by the fact, that the elements; which constitute the cols -liers ,et couronnes,latéraux ciroulaires continus;comportent,une lu -liers, and crowns, continuous circular sides; include, a lu -mière longitudinale avec mortaise ;en arc de corcle;dont le @@gment,  -longitudinal material with mortise; in arc of corcle; including the @@ gment, Est de longueur correspondant,à la course de l'axe du sabet coulissent Is of corresponding length, at the stroke of the axis of the sabot slide à l'intérieur. inside. 6 Dispositif,selon l'une quelconque des revendications(1à5)Caractérisé,6 Device, according to any one of claims (1 to 5) Characterized, Par le fait;que les éléments qui constituent les courennes et colliers By the fact; that the elements that constitute the courennes and necklaces Latéraux;conportent,une couronne et collier latéral,inter@édiaire;@ent  Lateral; have a crown and lateral collar, inter @ ediaire; @ent L'axe,coulisse dans les lunières ,aménsgées en are de ecrele @u centre The axis, slides in the glasses, arranged in are of ecrele @ in the center De ces palettes. Of these pallets. 7 Dispositif,selon l'une quelconque des revendication(1à6)Caractérisé,7 Device, according to any one of claim (1 to 6) Characterized, par le fait;que les éléments qui constitucut le retor extérieur,comper by the fact; that the elements which constitute the external retor, comper -te des lumières centrales; pour l'aspiration,et le refoulement placées -the central lights; for suction and discharge placed en périphérie pour le passage,des éléments conpréssibles. on the outskirts for the passage, convex elements. 8 Dispositif;selon l'une quelcenque des revendications(1à7)caractérisé,8 Device; according to any one of claims (1 to 7) characterized, Par le fait;que les éléments d'assemblage de l'en@enble sent deux pla By the fact; that the assembly elements of the en @ enble feel two pla -ques latérales d'assemblage ;dens lesquelles,sont aménagées des rai -a side assembly; dens which, are fitted spokes -nures comportent des galets antifristion incerperée,à des roulements, -nures include non-cracked anti-cracking rollers, with bearings, Extériours. Exterior. 9 Dispositif;selon l'une quelconque des revendications(1à8)Caractérisé,Par9 Device; according to any one of claims (1 to 8) Characterized, By le fait;que le rotor central est oxceatré;par rapport au stator, et au Rotor extérieur; ainsi,qu'aux courannes et colliers latér@nx des plaques  the fact that the central rotor is oxidized; relative to the stator and to the outer rotor; as well as to the side rails and collars @ nx of the plates d'assemblage;latérales.  assembly; lateral.
FR8303660A 1983-03-03 1983-03-03 VOLUMETRIC PUMP COMPRESSOR Expired FR2542041B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8303660A FR2542041B1 (en) 1983-03-03 1983-03-03 VOLUMETRIC PUMP COMPRESSOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8303660A FR2542041B1 (en) 1983-03-03 1983-03-03 VOLUMETRIC PUMP COMPRESSOR

Publications (2)

Publication Number Publication Date
FR2542041A1 true FR2542041A1 (en) 1984-09-07
FR2542041B1 FR2542041B1 (en) 1986-01-17

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6152718A (en) * 1997-11-17 2000-11-28 Takeshi Sato Positive-displacement piston mechanism having a rotary piston structure
CN109058097A (en) * 2018-08-20 2018-12-21 安徽国科生物科技有限公司 Integrated diagnosis and treatment change system oil transfer pump
CN114576159A (en) * 2022-03-15 2022-06-03 淄博市博山科海机械有限公司 High-lift leakage-free shielding turbopump

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3334E (en) * 1904-03-31 1904-10-21 Dominique Orecchioni Rotary combustion, steam or compressed air engine
FR640856A (en) * 1927-02-22 1928-07-24 Improvements to rotary vane machines usable in particular as pumps or compressors
FR661528A (en) * 1928-10-05 1929-07-26 Improvement in the establishment of rotary pumps with oscillating vane
US2011451A (en) * 1934-05-31 1935-08-13 Alvah M Lockwood Pumping apparatus
GB661596A (en) * 1949-04-14 1951-11-21 Cecil John Rhodes An improved rotary pump of the hinged vane type
DE2835686A1 (en) * 1978-08-14 1980-02-21 Borsig Gmbh Multicell eccentric rotor compressor - has thin resilient rotor blades whose tips are roller guided to maintain constant width leak gaps

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3334E (en) * 1904-03-31 1904-10-21 Dominique Orecchioni Rotary combustion, steam or compressed air engine
FR640856A (en) * 1927-02-22 1928-07-24 Improvements to rotary vane machines usable in particular as pumps or compressors
FR661528A (en) * 1928-10-05 1929-07-26 Improvement in the establishment of rotary pumps with oscillating vane
US2011451A (en) * 1934-05-31 1935-08-13 Alvah M Lockwood Pumping apparatus
GB661596A (en) * 1949-04-14 1951-11-21 Cecil John Rhodes An improved rotary pump of the hinged vane type
DE2835686A1 (en) * 1978-08-14 1980-02-21 Borsig Gmbh Multicell eccentric rotor compressor - has thin resilient rotor blades whose tips are roller guided to maintain constant width leak gaps

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6152718A (en) * 1997-11-17 2000-11-28 Takeshi Sato Positive-displacement piston mechanism having a rotary piston structure
CN109058097A (en) * 2018-08-20 2018-12-21 安徽国科生物科技有限公司 Integrated diagnosis and treatment change system oil transfer pump
CN114576159A (en) * 2022-03-15 2022-06-03 淄博市博山科海机械有限公司 High-lift leakage-free shielding turbopump
CN114576159B (en) * 2022-03-15 2024-05-14 淄博市博山科海机械有限公司 High-lift leakage-free shielding turbine pump

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Publication number Publication date
FR2542041B1 (en) 1986-01-17

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