EP0340125B1 - Joint for side sealing of a leaf dam - Google Patents

Joint for side sealing of a leaf dam Download PDF

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Publication number
EP0340125B1
EP0340125B1 EP89420145A EP89420145A EP0340125B1 EP 0340125 B1 EP0340125 B1 EP 0340125B1 EP 89420145 A EP89420145 A EP 89420145A EP 89420145 A EP89420145 A EP 89420145A EP 0340125 B1 EP0340125 B1 EP 0340125B1
Authority
EP
European Patent Office
Prior art keywords
valve
rib
plating
lip
seal
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
EP89420145A
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German (de)
French (fr)
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EP0340125A1 (en
Inventor
Michel Cardis
Bruno Basset
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.)
Neyrpic SA
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Neyrpic SA
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Filing date
Publication date
Application filed by Neyrpic SA filed Critical Neyrpic SA
Priority to AT89420145T priority Critical patent/ATE73512T1/en
Publication of EP0340125A1 publication Critical patent/EP0340125A1/en
Application granted granted Critical
Publication of EP0340125B1 publication Critical patent/EP0340125B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/20—Movable barrages; Lock or dry-dock gates
    • E02B7/54—Sealings for gates

Definitions

  • the present invention relates to a lateral sealing device between a check valve and its casing.
  • a valve is an element having in cross section the approximate shape of an airplane wing and which swivels longitudinally either to let the water pass when it is oriented horizontally, or to retain it when it stands at vertically or obliquely.
  • the valves considered comprise a longitudinal seal fixed to the threshold of the dam, the lip of which cooperates with the leading edge or "bordered" on the valve.
  • On either side of the latter there is provided a seal which provides lateral sealing with the corresponding bajoyer.
  • Each seal has a lip arranged over the entire length of each lateral face of the valve and a rounded rib corresponding to the leading edge or "plating" and which makes it extends so as to come to bear by its lateral edge against the bajoyer.
  • the improvements which are the subject of the present invention aim to remedy these drawbacks and to allow the production of a seal intended for the lateral sealing of a check valve and the effectiveness of which does not depend on expansions or contractions of it.
  • the seal used in the sealing device according to the invention comprises a rounded rib which protrudes transversely beyond the plane containing the free terminal edge of the oblique wing of the lip to form a circular periphery, while the bajoyer is provided with a cylindrical recess against the peripheral wall from which said periphery of the rounded rib comes to bear.
  • the rounded rib partially engages under the corresponding end of the planking and extends beyond it by being flush with the lateral face of said plating.
  • the illustration in fig. 1 shows the concrete threshold 1 of a dam with respect to which is mounted a valve 2 established in the usual way in the form of a box having in cross section the rough shape of an airplane wing.
  • This valve is articulated around a shaft 3 extending along the threshold 1 and the pivoting movement of which is controlled by a hydraulic cylinder 4.
  • the valve can take the position illustrated in solid lines by extending the threshold 1 to allow the passage of water from upstream to downstream.
  • the actuator 4 By expanding the actuator 4, the valve 2 is placed in the position illustrated in broken lines for which it is substantially vertical in a water retaining position.
  • the part 2a of the valve which surrounds the shaft 3 is called in the usual technique the "plating".
  • the threshold naturally presents a step 1a allowing the clearance of the plating 2a.
  • a profile 5 (Fig. 2) fixed to the vertical part of the recess 1a and to which is attached a seal 6 whose free end cooperates with the plating 2a to ensure the seal in the longitudinal direction.
  • the valve 2 is mounted between two casings 7 which each constitute the vertical side walls of the threshold 1. Each casing 7 is coated with a sheet 7a.
  • a seal 8 (fig. 4) comprising a lip 80 having in cross-section the shape of an open angle iron coming from a block 81 from which a rounded rib 82 opposite the lip 80.
  • the oblique wing 80a of lip 80 has a terminal edge lying in the same plane as that of side 82a of rib 82.
  • the latter has a recess 82b which engages under the plating 2a of valve 2. illustrated in fig. 5, the remaining part of the periphery of the rib 82 is in the plane of the plating 2a.
  • the rib 82 considered is assembled to the plating 2a by means of a plate of the same shape 9 which sandwiches the rib considered relative to the plating 2a by means of assembly bolts. It is observed that the lip 80 is supported by a bar 2b which stands perpendicular to a core 2c of the valve 2 oriented normally to the plating 2a. A profile 10 allows the subjugation of the lip 80 relative to the bar 2b.
  • the periphery of the rib 82 adjacent to the recess 82b is flush with the lateral face of the plating 2a, while its lateral edge 82a bears against the sheet 7a of the bajoyer 7.
  • This rim 110 is also provided with a step 112a in which the plating 2a engages, said periphery 112 flush with the outside of said plating as illustrated in FIG. 8.
  • a plate 12 which conforms to the internal shape of the rib 110 and which is situated under the plating 2a so that the step 112a is sandwiched between the latter and said plate.
  • Fixing bolts 13 provide general assembly.
  • the flat profile referenced 14 (fig. 8), which corresponds to that 10 of the embodiment of fig. 1 to 5, is extended by a rounded part 14a cooperating with the external surface of the rib 110, under the plating 2a.
  • Bolts 15 thus make it possible to secure said rib relative to plate 12.
  • a lateral valve seal was thus produced which, when it is lengthened or narrowed under the effect of heat or cold, continues to ensure perfect sealing since the periphery 112 of the rib 110 of the joint 11 moves by sliding against the cylindrical peripheral wall of the recess 7b, avoiding any leakage since there is a sealing face parallel to the direction of movement of the valve.
  • this seal is effective whatever the angular position of the valve due to the cylindrical shapes of the recess 7b and the periphery 112 which of course has the same radius.

Abstract

The rounded rib (110) of the lateral joint projects transversely beyond the plane of the lock side wall (7, 7a), in such a way that its periphery (112) assuming a circular shape comes to bear against the lateral face of a cylindrical recess (7b) made in said lock side wall (7). The displacements of the leaf thus do not affect the sealing. <IMAGE>

Description

La présente invention se rapporte à un dispositif d'étanchéité latérale entre un clapet de barrage et son bajoyer.The present invention relates to a lateral sealing device between a check valve and its casing.

On sait que dans le domaine des barrages au fil de l'eau, l'on utilise dnas certain cas et particulièrement pour les ouvrages de surface, des clapets qui sont adaptés au réglage du débit ou du niveau en vue de constituer les barrages mobiles par excellence. Un clapet est un élément présentant en section transversale le forme approximative d'une aile d'avion et qui tourillonne longitudinalement pour soit laisser passer l'eau lorsqu'il est orienté à l'horizontale, soit pour la retenir lorsqu'il se dresse à la verticale ou obliquement. Les clapets considérés comportent un joint d'étanchéité longitudinal fixé au seuil du barrage dont la lèvre coopère avec le bord d'attaque ou "bordé" du clapet. De part et d'autre de ce dernier, on a prévu un joint qui réalise l'étanchéité latérale avec le bajoyer correspondant. Chaque joint comporte une lèvre disposée sur toute la longueur de chaque face latérale du clapet et une nervure arrondie correspondant au bord d'attaque ou "bordé" et qui en fait le prolonge de manière à venir porter par son arête latérale contre le bajoyer.We know that in the field of dams on the water, we use dnas certain cases and particularly for surface works, valves which are adapted to the regulation of the flow or the level in order to constitute the movable dams by Excellency. A valve is an element having in cross section the approximate shape of an airplane wing and which swivels longitudinally either to let the water pass when it is oriented horizontally, or to retain it when it stands at vertically or obliquely. The valves considered comprise a longitudinal seal fixed to the threshold of the dam, the lip of which cooperates with the leading edge or "bordered" on the valve. On either side of the latter, there is provided a seal which provides lateral sealing with the corresponding bajoyer. Each seal has a lip arranged over the entire length of each lateral face of the valve and a rounded rib corresponding to the leading edge or "plating" and which makes it extends so as to come to bear by its lateral edge against the bajoyer.

Comme les clapets considérés peuvent atteindre des longueurs très importantes de l'ordre de 40 ou 50 m, il va de soi que les dilatations ou contractions qu'il subit lors des variations de température entraînent des problèmes d'étanchéité dus à la contraction et des problèmes de serrage des deux joints contre les bajoyer du fait des dilatations. Ces serrages provoquent au cours des manoeuvres des usures de la nervure arrondie de chaque joint, si bien qu'ensuite on peut assister à des fuites. Bien entendu le problème ne se pose pas au niveau de la lèvre du joint considéré puisque celle-ci est souple.As the valves considered can reach very long lengths of the order of 40 or 50 m, it goes without saying that the expansions or contractions which it undergoes during temperature variations cause sealing problems due to contraction and problems of tightening of the two joints against the woodwork due to expansions. These tightenings cause wear during the maneuvers of the rounded rib of each joint, so that afterwards there may be leaks. Of course, the problem does not arise at the lip of the joint considered since the latter is flexible.

Les perfectionnements qui font l'objet de la présente invention visent à remédier à ces inconvénients et à permettre la réalisation d'un joint destiné à l'étanchéité latérale d'un clapet de barrage et dont l'efficacité ne dépende pas des dilatations ou contractions de celui-ci.The improvements which are the subject of the present invention aim to remedy these drawbacks and to allow the production of a seal intended for the lateral sealing of a check valve and the effectiveness of which does not depend on expansions or contractions of it.

A cet effet le joint utilisé dans le dispositif d'étanchéité conforme à l'invention comporte une nervure arrondie qui dépasse transversalement au delà du plan renfermant l'arête terminale libre de l'aile oblique de la lèvre pour former un pourtour circulaire, tandis que le bajoyer est pourvu d'un chambrage cylindrique contre la paroi périphérique duquel ledit pourtour de la nervure arrondie vient prendre appui.To this end, the seal used in the sealing device according to the invention comprises a rounded rib which protrudes transversely beyond the plane containing the free terminal edge of the oblique wing of the lip to form a circular periphery, while the bajoyer is provided with a cylindrical recess against the peripheral wall from which said periphery of the rounded rib comes to bear.

La nervure arrondie s'engage en partie sous l'extrémité correspondante du bordé et s'étend au-delà de celle-ci en affleurant la face latérale dudit bordé.The rounded rib partially engages under the corresponding end of the planking and extends beyond it by being flush with the lateral face of said plating.

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer :

  • Fig. 1 est une coupe transversale d'un barrage équipé d'un clapet.
  • Fig. 2 illustre en coupe transversale le joint longitudinal usuel coopérant avec le bordé du clapet.
  • Fig. 3 est une coupe longitudinale cassée d'un clapet comportant un joint d'étanchéité connu sur chacune de ses faces latérales.
  • Fig. 4 est une vue partielle en perspective du joint de fig. 3.
  • Fig. 5 illustre le montage du joint par rapport au bordé d'un clapet conformément à la technique antérieure.
  • Fig. 6 illustre en perspective la partie avant d'un joint établi conformément à l'invention.
  • Fig. 7 est une vue semblable à celle de fig. 3 mais montrant la disposition du montage conforme à l'invention.
  • Fig. 8 montre en perspective le montage du joint de fig. 6.
The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:
  • Fig. 1 is a cross section of a dam equipped with a valve.
  • Fig. 2 illustrates in cross section the usual longitudinal seal cooperating with the plating of the valve.
  • Fig. 3 is a broken longitudinal section of a valve comprising a known seal on each of its lateral faces.
  • Fig. 4 is a partial perspective view of the joint of FIG. 3.
  • Fig. 5 illustrates the mounting of the seal relative to the plating of a valve in accordance with the prior art.
  • Fig. 6 illustrates in perspective the front part of a joint established in accordance with the invention.
  • Fig. 7 is a view similar to that of FIG. 3 but showing the arrangement arrangement according to the invention.
  • Fig. 8 shows in perspective the assembly of the seal of FIG. 6.

L'illustration de fig. 1 montre le seuil en béton 1 d'un barrage par rapport auquel est monté un clapet 2 établi de manière usuelle sous la forme d'un caisson présentant en section transversale la forme grossière d'une aile d'avion. Ce clapet est articulé autour d'un arbre 3 s'étendant le long du seuil 1 et dont le mouvement de pivotement est commandé par un vérin hydraulique 4. Le clapet peut prendre la position illustrée en traits pleins en prolongeant le seuil 1 pour permettre le passage de l'eau de l'amont vers l'aval. En dilatant le verin 4, on place le clapet 2 dans la position illustrée en traits discontinus pour laquelle il se trouve substantiellement vertical dans une position de retenue de l'eau. La partie 2a du clapet qui entoure l'arbre 3 est appelée dans la technique usuelle le "bordé". Le seuil présente bien entendu un décrochement 1a permettant le débattement du bordé 2a. Dans ce décrochement est prévu un profilé 5 (fig. 2) fixé à la partie verticale du décrochement 1a et auquel est assujetti un joint 6 dont l'extrémité libre coopère avec le bordé 2a pour assurer l'étanchéité dans le sens longitudinal.The illustration in fig. 1 shows the concrete threshold 1 of a dam with respect to which is mounted a valve 2 established in the usual way in the form of a box having in cross section the rough shape of an airplane wing. This valve is articulated around a shaft 3 extending along the threshold 1 and the pivoting movement of which is controlled by a hydraulic cylinder 4. The valve can take the position illustrated in solid lines by extending the threshold 1 to allow the passage of water from upstream to downstream. By expanding the actuator 4, the valve 2 is placed in the position illustrated in broken lines for which it is substantially vertical in a water retaining position. The part 2a of the valve which surrounds the shaft 3 is called in the usual technique the "plating". The threshold naturally presents a step 1a allowing the clearance of the plating 2a. In this recess is provided a profile 5 (Fig. 2) fixed to the vertical part of the recess 1a and to which is attached a seal 6 whose free end cooperates with the plating 2a to ensure the seal in the longitudinal direction.

Le clapet 2 est monté entre deux bajoyers 7 qui constituent chacun les parois latérales verticales du seuil 1. Chaque bajoyer 7 est revêtu d'une tôle 7a. Sur les deux faces latérales du clapet 2 est monté un joint 8 (fig.4) comportant une lèvre 80 présentant en section tranversale la forme d'une cornière ouverte issue d'un bloc 81 à partir duquel part une nervure arrondie 82 opposée à la lèvre 80. L'aile oblique 80a de la lèvre 80 présente une arête terminale se trouvant dans le même plan que celle latérale 82a de la nervure 82. Cette dernière présente un décrochement 82b qui s'engage sous le bordé 2a du clapet 2. Comme illustré en fig. 5, la partie restante de la périphérie de la nervure 82 se trouve dans le plan du bordé 2a. La nervure 82 considérée est assemblée au bordé 2a au moyen d'une plaquette de même forme 9 qui fixe en sandwich la nervure considérée par rapport au bordé 2a au moyen de boulons d'assemblage. On observe que la lèvre 80 est soutenue par une barrette 2b qui se dresse perpendiculairement à une âme 2c du clapet 2 orientée normalement au bordé 2a. Un profilé 10 permet l'assujettissement de la lèvre 80 par rapport à la barrette 2b. On remarque en fig. 3 que la périphérie de la nervure 82 adjacente au décrochement 82b affleure la face latérale du bordé 2a, tandis que son arête latérale 82a prend appui contre la tôle 7a du bajoyer 7.The valve 2 is mounted between two casings 7 which each constitute the vertical side walls of the threshold 1. Each casing 7 is coated with a sheet 7a. On the two lateral faces of the valve 2 is mounted a seal 8 (fig. 4) comprising a lip 80 having in cross-section the shape of an open angle iron coming from a block 81 from which a rounded rib 82 opposite the lip 80. The oblique wing 80a of lip 80 has a terminal edge lying in the same plane as that of side 82a of rib 82. The latter has a recess 82b which engages under the plating 2a of valve 2. illustrated in fig. 5, the remaining part of the periphery of the rib 82 is in the plane of the plating 2a. The rib 82 considered is assembled to the plating 2a by means of a plate of the same shape 9 which sandwiches the rib considered relative to the plating 2a by means of assembly bolts. It is observed that the lip 80 is supported by a bar 2b which stands perpendicular to a core 2c of the valve 2 oriented normally to the plating 2a. A profile 10 allows the subjugation of the lip 80 relative to the bar 2b. We notice in fig. 3 that the periphery of the rib 82 adjacent to the recess 82b is flush with the lateral face of the plating 2a, while its lateral edge 82a bears against the sheet 7a of the bajoyer 7.

Il est inutile de décrire de manière plus approfondie un tel agencement qui est bien connu dans la technique considérée.There is no need to describe further such an arrangement which is well known in the art.

Conformément à l'invention et pour remédier aux inconvénients évoqués au début des présentes, la nervure 110 du joint 11 établi conformément à l'invention en remplacement de celui 8 et qui est pourvu d'une lèvre 111 identique à celle 80 du joint 8, dépasse au-delà de l'arête extrême de l'aile oblique 111a de la lèvre 11 (fig. 6). Dans ces conditions, on prévoit de ménager dans la tôle 7a de revêtement du bajoyer 7 un chambrage cylindrique 7b contre la paroi périphérique circulaire duquel le pourtour 112 de la nervure 110 vient prendre appui. Ce pourtour 110 est également muni d'un décrochement 112a dans lequel s'engage le bordé 2a, ledit pourtour 112 affleurant l'extérieur dudit bordé comme illustré en fig. 8. Là encore, on prévoit une plaquette 12 épousant la forme intérieure de la nervure 110 et qui est située sous le bordé 2a de manière que le décrochement 112a soit pris en sandwich entre celui-ci et ladite plaquette. Des boulons de fixation 13 assurent l'assemblage général. Dans le mode d'exécution conforme à l'invention, le profilé plat référencé 14 (fig. 8), qui correspond à celui 10 du mode d'exécution de fig. 1 à 5, se prolonge par une partie arrondie 14a coopérant avec la surface externe de la nervure 110, sous le bordé 2a. Des boulons 15 permettent ainsi d'assujettir ladite nervure par rapport à la plaquette 12.In accordance with the invention and to remedy the drawbacks mentioned at the beginning of the present document, the rib 110 of the seal 11 established in accordance with the invention to replace that 8 and which is provided with a lip 111 identical to that 80 of the seal 8, protrudes beyond the extreme edge of the oblique wing 111a of the lip 11 (fig. 6). Under these conditions, provision is made to provide in the sheet metal 7a for covering the bajoyer 7 a cylindrical recess 7b against the circular peripheral wall from which the periphery 112 of the rib 110 comes to bear. This rim 110 is also provided with a step 112a in which the plating 2a engages, said periphery 112 flush with the outside of said plating as illustrated in FIG. 8. Here again, a plate 12 is provided which conforms to the internal shape of the rib 110 and which is situated under the plating 2a so that the step 112a is sandwiched between the latter and said plate. Fixing bolts 13 provide general assembly. In the embodiment according to the invention, the flat profile referenced 14 (fig. 8), which corresponds to that 10 of the embodiment of fig. 1 to 5, is extended by a rounded part 14a cooperating with the external surface of the rib 110, under the plating 2a. Bolts 15 thus make it possible to secure said rib relative to plate 12.

On a ainsi réalisé un joint latéral de clapet qui, lors des allongements ou des rétrécissements de celui-ci sous l'effet de la chaleur ou du froid, continue d'assurer une étanchéité parfaite puisque le pourtour 112 de la nervure 110 du joint 11 se déplace en glissant contre la paroi périphérique cylindrique du chambrage 7b en évitant tout défaut d'étanchéité puisqu'on a affaire à une face d'étanchéité parallèle au sens du déplacement du clapet. Bien entendu, cette étanchéité est efficace quelle que soit la position angulaire du clapet du fait des formes cylindriques du chambrage 7b et du pourtour 112 qui présente bien entendu le même rayon.A lateral valve seal was thus produced which, when it is lengthened or narrowed under the effect of heat or cold, continues to ensure perfect sealing since the periphery 112 of the rib 110 of the joint 11 moves by sliding against the cylindrical peripheral wall of the recess 7b, avoiding any leakage since there is a sealing face parallel to the direction of movement of the valve. Of course, this seal is effective whatever the angular position of the valve due to the cylindrical shapes of the recess 7b and the periphery 112 which of course has the same radius.

Claims (4)

1. Device for the lateral sealing between a dam valve (2) and its lock side wall (7), comprising a seal (11), secured to the valve (2) and having a lip (111) arranged over the whole length of each side face of the valve (2), as well as a rounded rib (110), the side (111a) of the lip (111) being in contact with the sheet metal forming the lock side wall (7), characterized in that the rounded rib (110) protrudes transversely beyond the plane within which the free end edge of the oblique side (111a) of the lip (111) lies, to form a circular periphery (112), while the lock side wall (7) is provided with a cylindrical recess (7b) against the peripheral wall of which said periphery (112) of the rounded rib (110) comes to bear.
2. Sealing device according to Claim 1, characterized in that the rounded rib (110) engages partially under the corresponding end of the plating (2a) of the valve and extends beyond the said end flush with the side face of said plating (2a).
3. Sealing device according to Claim 2, characterized in that a platelet (12) is placed inside its rib (110) for securing this rib on the one hand to the plating (2a) and on the other hand to an extension of corresponding shape of the support bar (114) of the lip (111) of said seal.
4. Sealing device according to Claim 2, characterized in that it has a thinned zone or offset portion (112a) corresponding to the overlap of the plating (2a).
EP89420145A 1988-04-25 1989-04-20 Joint for side sealing of a leaf dam Expired - Lifetime EP0340125B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89420145T ATE73512T1 (en) 1988-04-25 1989-04-20 JOINT TO THE SIDE SEAL OF A VALVE WEIR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8805721 1988-04-25
FR8805721A FR2630471B1 (en) 1988-04-25 1988-04-25 SEAL FOR THE LATERAL SEALING OF A DAM VALVE

Publications (2)

Publication Number Publication Date
EP0340125A1 EP0340125A1 (en) 1989-11-02
EP0340125B1 true EP0340125B1 (en) 1992-03-11

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ID=9365809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89420145A Expired - Lifetime EP0340125B1 (en) 1988-04-25 1989-04-20 Joint for side sealing of a leaf dam

Country Status (6)

Country Link
US (1) US4934867A (en)
EP (1) EP0340125B1 (en)
AT (1) ATE73512T1 (en)
DE (1) DE68900952D1 (en)
ES (1) ES2029749T3 (en)
FR (1) FR2630471B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0127216D0 (en) * 2001-11-13 2002-01-02 Univ Edinburgh Watertight gate mechanism
EP3339513B1 (en) * 2015-09-25 2020-03-25 Terata, Hiroshi Sluice gate
DK179294B1 (en) * 2017-03-30 2018-04-16 Steen Olsen Invest Aps Flood protection
CN107988995B (en) * 2017-12-11 2019-09-03 北京北排装备产业有限公司 A kind of intelligence lock gate for flood protection control device and its control method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683354A (en) * 1952-07-07 1954-07-13 Fred H Camphausen Seal for hydraulic gates
DE1099950B (en) * 1955-09-10 1961-02-16 Maschf Augsburg Nuernberg Ag Side seal of roller, Schuetzen-, segment weirs or the like.
DE1084204B (en) * 1957-05-21 1960-06-23 Maschf Augsburg Nuernberg Ag Sector Defense
US3326002A (en) * 1965-05-17 1967-06-20 Dominion Bridge Co Ltd Equalizing roller paths for load bearing rollers
US3693356A (en) * 1970-10-19 1972-09-26 Allis Chalmers Mfg Co Hydraulic turbine inlet configuration
FR2148836A5 (en) * 1971-08-05 1973-03-23 Aubert J
US4582451A (en) * 1984-04-16 1986-04-15 The Presray Corporation Floodgate panel and sealing means therefor

Also Published As

Publication number Publication date
ATE73512T1 (en) 1992-03-15
FR2630471A1 (en) 1989-10-27
ES2029749T3 (en) 1992-09-01
DE68900952D1 (en) 1992-04-16
US4934867A (en) 1990-06-19
EP0340125A1 (en) 1989-11-02
FR2630471B1 (en) 1990-08-24

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