EP0021880A1 - Sealing system for hydraulic barrage - Google Patents

Sealing system for hydraulic barrage Download PDF

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Publication number
EP0021880A1
EP0021880A1 EP80400729A EP80400729A EP0021880A1 EP 0021880 A1 EP0021880 A1 EP 0021880A1 EP 80400729 A EP80400729 A EP 80400729A EP 80400729 A EP80400729 A EP 80400729A EP 0021880 A1 EP0021880 A1 EP 0021880A1
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EP
European Patent Office
Prior art keywords
jack
valve
rod
stop
spherical
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Granted
Application number
EP80400729A
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German (de)
French (fr)
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EP0021880B1 (en
Inventor
Jean Aubert
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Individual
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Individual
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Priority to AT80400729T priority Critical patent/ATE6083T1/en
Publication of EP0021880A1 publication Critical patent/EP0021880A1/en
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Publication of EP0021880B1 publication Critical patent/EP0021880B1/en
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    • 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
    • E02B7/40—Swinging or turning gates
    • E02B7/44—Hinged-leaf gates

Definitions

  • the present invention relates to a valve closure system and downstream cylinder for hydraulic dam.
  • This movable opening is arranged between two abutments, which are established, either along the banks at the ends of the raft of a movable dam, or on the crest of a massive dam.
  • Kneading systems consist of the juxtaposition of elements of small dimensions, which can be operated independently of each other. These elements each include a valve which can occupy an almost vertical extreme position, a second substantially horizontal extreme position and often intermediate positions.
  • movable closure elements may include a valve panel, articulated on the raft or the body of the dam and maintained in the various above positions by a flying buttress resting on catch notches fixed to the raft or to the body of the barrage.
  • Movable closure elements are also known, which include a bridge articulated on the raft or the body of the dam and a valve panel which is itself articulated around a horizontal axis linked to the bridge. The flying buttress is then articulated on the easel. In normal maneuvers, the valve panel and the bridge remain glued to each other, but the additional degree of freedom introduced by the interposition of the bridge between the panel and the raft is advantageous in the event of impact.
  • the term "valve” includes not only the valve panel but also the other moving parts attached thereto. It applies as well to the valve panel articulated directly on the slab as to the panel articulated on a pivoting easel or to other juxtaposed elements of small dimensions arranged differently.
  • a closure system as referred to in the present invention, is described in French patent Number 2,148,836.
  • the movable closure system for hydraulic dam is provided with an operating device which comprises an oscillating jack mounted rotatably with respect to a horizontal axis linked to the raft or to the body of the dam and a stop member orientable around a horizontal axis linked to the valve, which is arranged to receive in support the end of the cylinder rod during an operation of this valve.
  • the system further comprises a device for immobilizing the body of the main cylinder between two operations.
  • This device is slaved to supply the cylinder with oil under high pressure, so that the immobilization is automatically removed at the start of each maneuver.
  • the system further comprises a device for immobilizing the stop member of the valve between two operations.
  • the cylinder body on the one hand, and the valve stop member on the other hand retain the position they occupied at the end of a previous maneuver.
  • the rod of the jack will therefore be oriented in the direction of the stop which will itself be suitably arranged to receive it. Perhaps this immobilization system would work satisfactorily. It would however be quite expensive and relatively complex, which reduces reliability.
  • the object of the present invention is to remedy this drawback by providing a closure system with valve and downstream cylinder in which the cylinder rod is retracted inside the cylinder body between two operations, and which is at the same time simple. , reliable and economical.
  • the closure system targeted by the invention comprises at least one valve that can take several predetermined inclinations around a horizontal axis linked to the raft or to the body of the dam, each valve being provided with an operating device comprising, on the one hand , a jack mounted oscillating on the raft or the body of the dam downstream of the valve, and on the other hand, a stop movable in rotation about a horizontal axis carried by the valve panel or by the easel, and intended to receive the free end of the cylinder rod, means being provided so that, between two maneuvers of the valve, the cylinder rod fully retracts into the body of the latter.
  • this closure system is characterized in that the jack is associated with return means to give said jack an extreme orientation around its axis of oscillation when the rod of the jack is moved away from the stop, this orientation extreme being close to the orientations which the jack takes when the rod of said jack is in contact with the stop in the various predetermined inclinations of the valve, the free end of the rod of the jack and the stop comprising - guide means for ensuring engagement straight from the end of the cylinder rod and from the stop when these members come into mutual contact.
  • the fairly complex device for immobilizing the body of the jack between two maneuvers is not no longer needed.
  • the return means of the system according to the invention give the cylinder its extreme orientation. Therefore, at the start of the next maneuver, the rod leaves the body of the jack in the above-mentioned extreme orientation.
  • the guide means automatically bring the end of the rod in coincidence with the stop.
  • the aforementioned guide means comprise a spherical zone of the stop, crossed by said horizontal axis carried by the valve, and a cup fixed on the free end of the cylinder rod to receive this spherical zone .
  • the stop comprises a spherical zone, its orientation is indifferent, and there is no need to provide a device for immobilizing the stop between two maneuvers of the valve.
  • the dimensioning of the cup is such that, in each of said predetermined positions of the valve, the center of the spherical zone of the stop is located inside the cylinder swept by the cup when the jack is arranged in the aforementioned extreme orientation.
  • the cup can come into engagement with the spherical zone of the stop, regardless of the predetermined position of the valve.
  • the closing system further comprises a reduction valve installed within the visual range of an operator, and means for giving this reduction valve a movement similar to that of one of the valves from the cover.
  • This version of the invention allows an operator to assess the position of the plug valve by simply observing the valve in reduction.
  • the sealing system mounted on a raft or a dam body 1, comprises a valve 2 comprising a bridge 3 and a valve panel 4.
  • the bridge 3 comprises two parallel beams 5 joined by two crosspieces 6.
  • the valve panel 2 is articulated to the dam body 1, by means of a horizontal axis 7 carried by two supports 8a, which depend on a threshold 8 prevailing along the opening and sealed in the raft or the body of the dam .
  • the valve panel 4 is articulated at the other end of the side members 5 of the trestle 3, along an axis 9 parallel to the horizontal axis 3.
  • This valve panel 4 is substantially rectangular, and the axis 9 is substantially arranged in a median of said valve panel.
  • the lower horizontal side 10 of the valve panel 4 rests, in the service position, on the threshold 8.
  • a flying buttress 11 is articulated to the valve 2 along the axis 9.
  • the foot of this flying buttress 11 takes support in one of the stop notches 12 of a slide 13.
  • the valve 2 occupies one or the other of the predetermined inclination positions, designated in FIG. 4 by positions P1, P2, P3 .
  • a cylinder 14 is mounted to oscillate relative to the barrier body 1 by means of an oscillation axis 15 downstream of the valve 2.
  • a housing 16 is provided in the barrier 1 for the body 17 of the cylinder 14.
  • Said housing is protected by a cover, not shown in the Figures, against the deposition of solid products which, in the long run, might limit or prohibit the movements of the jack in its housing.
  • Hydraulic control means make it possible to actuate the jack 14, to make its rod come out or come back.
  • the easel 3 of the valve 2 carries a stop 19 to receive the free end of the rod 18 of the jack 14.
  • the stop 19 comprises guide means for ensuring its frank engagement with the end of the rod 18 of the jack 14, when the latter comes into contact with said stopper 19.
  • These guide means comprise a spherical zone 20 ( Figure 3).
  • This spherical zone 20 is connected by two frustoconical reinforcements 21 to an axis 22 which crosses it passing through its center.
  • the axis 22 is parallel to the horizontal axis 7 and to the axis 9.
  • Each of the ends of the axis 22 is carried in free rotation by a clamp 23 subject respectively to a spar 5 of the bridge 3.
  • the cylinder 14 is associated with return means comprising a positioning of the axis of oscillation 15 of the cylinder 14 such that the center of gravity of the cylinder 14 is always located opposite to the free end of the rod 18 relative to said axis of oscillation 15, even when this rod 18 is fully extended.
  • the jack 14 permanently tends to take an extreme orientation of direction AA ′, in which the base 24 of the body 17 bears against a wall 25 of the housing 16.
  • This extreme orientation of direction AA ′ is close to the orientations that the jack 14 takes in each of the positions P1, P2, P3 of the valve (see FIG. 4).
  • this peculiarity results from the fact that the axis of oscillation 15 of the jack 14 meets the tangent at 45 °, with respect to the horizontal, of a circle C on which the center of the zone moves. spherical 20 of the stop 19 during the movement of the valve 2.
  • the fulcrum of the base 24 of the body 17 of the jack 14 on the wall 25 of the housing 16 is located so that the direction AA ′ of the orientation of the actuator is substantially constituted by the tangent to the circle C.
  • the positions P1, P2, P3 correspond to a predetermined inclination of the valve 2 relative to the vertical respectively equal to approximately 20 °, 35 ° and 45 °.
  • the free end of the rod 18 of the cylinder 14 comprises, like the stop 19, guide means for ensuring a frank engagement of this end of the rod 18 on the spherical area 20, when these members come into mutual contact.
  • These guide means comprise a cup 26 fixed to the end of the rod 18.
  • This cup-26 has a spherical bottom 27, preferably of the same diameter as the spherical zone 20 of the stop 19, extended over its entire periphery by a frustoconical border 28 substantially tangent to this spherical bottom 27.
  • the radius S of the large base of the frustoconical border 28 is chosen so that in each of the positions P1, P2, P3, the center of the spherical zone 20 is located inside the cylinder swept by the cup 26 when the rod 18 moves relative to the body 17 of the jack 14 in extreme orientation.
  • the center of the spherical zone 20 is located, in each of the positions Pl, P2, P3 of the valve 2, inside a cylinder of radius S and of axis AA '.
  • the radius S is greater than d by a distance substantially equal to half the radius of the spherical zone 20.
  • the depth Q of the cup 26 is less than the difference between the radius of the spherical zone 20 and the radius of the axis 22 of the stop 19.
  • This position is stable because the weight of the valve 2 is sufficient to exert at the stop 19 a moment, relative to the axis of oscillation 15, greater than the moment exerted by the weight of the jack 14 relative to the same axis.
  • the jack 14 under the effect of its weight, is supported on the wall 25 of the housing 16, and is therefore oriented in the direction AA '.
  • the actuator 14 is controlled in a known manner so that the rod 18 comes out of the body 17. During this movement, the actuator 14 retains its extreme orientation, until the cup 26 meets the spherical zone 20 of the stop 19.
  • this radius S is greater than the distance d by approximately half the radius of the spherical zone 20, even in the most unfavorable position P1 for the encounter, not only will this encounter certainly take place, but, moreover, the edge of the cup 26 will meet the spherical zone 20 beyond its polar axis GG 'parallel to the direction AA', at a point F whose associated radius of the spherical zone 20 makes an angle T of at least 30 ° with said polar axis GG '.
  • the withdrawal of the rod 18 is then controlled in a known manner. As the cup 26 separates from the stop 19, the jack 14 gradually returns to its extreme orientation under the effect of its weight. The rod 18 retracts until it occupies its fully retracted position.
  • valve If, starting from position P3, the valve is raised slightly, it is sufficient, thanks to an exhaust device, to let it come back down to bed. Starting from P2, you cannot sleep directly, and you should wait and exceed the position Pl. - Starting from P1, a slight displacement upstream followed by a descent leads, thanks to another exhaust, the valve in position P3. Starting from this last position, the valve can be folded down, as mentioned above. The detail of the operations to be carried out, to pass from one position to another, is deduced from the above.
  • the rod 18 is controlled to make it lift the valve 2, as described above. So we bring it to a slightly closer to vertical than position P3. Due to the shape of the slide 13, it suffices then to let the rod 18 of the jack 14 fully retract, the pressure of the spherical zone 19 on the cup 26 persisting until the end of this maneuver. When this is completed, the valve panel is horizontal, the rod of the jack 14 is at the bottom of the travel, and the spherical zone 20 remains fitted into the cup 26.
  • the previous system could only function if one managed to avoid any failure of either of the two blocking methods provided.
  • the system according to the invention is less expensive and above all it is much more reliable.
  • the bridge 3 carries, instead of the axis 22, a fixed axis 22a on which is mounted in rotation a sphere 19a.
  • This second arrangement makes it possible to adopt, for the axis 22a, a diameter less than that of the ends of the axis 22. Such a reduction in diameter facilitates the rotation of the sphere.
  • the assembly is comparable to a connecting rod, the head of which is constituted by the sphere 19, 19a, and the body by the rod 18 of the jack.
  • This connecting rod has the particularity of being able, when it has no efforts to transmit, to divide e-, two parts, so that the body of the rod goes temporarily to take shelter from rust, in the cylinder of the jack 14.
  • This device allows the operator to follow the details of the complex movements of the foot of the flying buttress in the slide. If an incident, moreover highly improbable, were to occur during a maneuver, the operator could thus easily determine the origin. If, on the contrary, we were content to put at his disposal push buttons controlling the various maneuvers, he could not know in a simple way the origin of a fault.
  • a barrier element of reduced dimensions is placed in the maneuvering cabin and it is made so that this element moves while remaining constantly in a position similar to that occupied by the element of the barrier whose control is displacement.
  • Figure 7 shows one of the hydraulic devices that can be used to achieve the synchronism in question.
  • the pumps 32, 33 supply distributors 36 and 36a, the control levers of which are coupled by a bar 37.
  • Lines 38, 38a, 39, 39a symbolically represent the entire distribution supplying, via a set of valves electrically controlled by buttons, the upper compartment and the lower compartment of the jack 14 corresponding to any one of the valves constituting the opening.
  • the distributors 36, 36a are both in a position such that the oil returns to the reserve 35 via the lines 40 and 40a.
  • the bar 37 for coupling the controls of the distributors 36 and 36a is moved to the right or to the left.
  • the pumped oil goes either to the upper compartment of the two cylinders, or to the lower compartment.
  • the displacements of the two rods cylinders will be homothetic and it will be the same for the element of the dam and the model placed under the eyes of the mechanic. It is by observing the movements of the foot of the flying buttress in the reduced slide that the mechanic will move to the right or to the left of the coupling rod 37 to cause the valves to go up or down.
  • This valve control device combines with the sphere-cup system and consolidates its automaticity advantages by limiting as much as possible the operator's intervention on the raft or barrage.
  • the return means for giving the jack 14 its extreme orientation may comprise a spring acting between the raft or barrage body 1 on the one hand, and the jack 14 on the other hand.
  • valve does not include an easel 3, the valve panel being directly articulated to the barrier body and carrying in an articulated manner, the stop and the flying buttress.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Tents Or Canopies (AREA)
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  • Lift Valve (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

The gate system comprises a wicket which is capable of taking up a number of different positions corresponding to predetermined angles of inclination, an operating device comprising a pivotally mounted jack, and a rotatable abutment member carried by the wicket for receiving the end of the operating rod of the jack. The jack is restored to an end position of angular orientation when the operating rod is moved away from the abutment member. This end orientation is close to the orientations of the jack during operation. The operating rod of the jack and the abutment member comprise guiding apparatus for orienting the jack towards the abutment member when the end of the jack-operating rod comes close to the abutment member.

Description

La présente invention concerne un système de bouchure à clapet et vérin aval.pour barrage hydraulique.The present invention relates to a valve closure system and downstream cylinder for hydraulic dam.

Cette bouchure mobile est disposée entre deux culées, qui sont établies, soit le long des berges aux extrémités du radier d'un barrage mobile, soit sur la crête d'un barrage massif.This movable opening is arranged between two abutments, which are established, either along the banks at the ends of the raft of a movable dam, or on the crest of a massive dam.

On connaît des systèmes de bouchure constitués par la juxtaposition d'éléments de petites dimensions, qui peuvent être manoeuvrés indépendamment les uns des autres. Ces éléments comprennent chacun un clapet qui peut occuper une position extrême quasi verticale, une deuxième position extrême sensiblement horizontale et souvent des positions intermédiaires.Kneading systems are known which consist of the juxtaposition of elements of small dimensions, which can be operated independently of each other. These elements each include a valve which can occupy an almost vertical extreme position, a second substantially horizontal extreme position and often intermediate positions.

Ces éléments de bouchure mobiles peuvent comprendre un panneau de clapet, articulé sur le radier ou le corps du barrage et maintenu dans les diverses positions ci-dessus par un arc-boutant prenant appui sur des crans d'arrêt fixés au radier ou au corps du barrage.These movable closure elements may include a valve panel, articulated on the raft or the body of the dam and maintained in the various above positions by a flying buttress resting on catch notches fixed to the raft or to the body of the barrage.

On connaît également des éléments mobiles de bouchure, qui comprennent un chevalet articulé sur le radier ou le corps du barrage et un panneau de clapet qui est lui- même articulé autour d'un axe horizontal lié au chevalet. L'arc-boutant est alors articulé sur le chevalet. Dans les manoeuvres normales, le panneau de clapet et le chevalet restent collés l'un à l'autre, mais le degré de liberté supplémentaire introduit par l'interposition du chevalet entre le panneau et le radier est avantageux en cas de choc. Le terme "clapet" englobe non seulement le panneau de clapet mais aussi-les autres pièces mobiles qui y sont rattachées. Il s'applique aussi bien au panneau de clapet articulé directement sur le radier qu'au panneau articulé sur un chevalet pivotant ou à d'autres éléments juxtaposés de petites dimensions agencés différemment.Movable closure elements are also known, which include a bridge articulated on the raft or the body of the dam and a valve panel which is itself articulated around a horizontal axis linked to the bridge. The flying buttress is then articulated on the easel. In normal maneuvers, the valve panel and the bridge remain glued to each other, but the additional degree of freedom introduced by the interposition of the bridge between the panel and the raft is advantageous in the event of impact. The term "valve" includes not only the valve panel but also the other moving parts attached thereto. It applies as well to the valve panel articulated directly on the slab as to the panel articulated on a pivoting easel or to other juxtaposed elements of small dimensions arranged differently.

Un système de bouchure, tel que visé dans la présente invention, est décrit dans le brevet français Numéro 2 148 836.A closure system, as referred to in the present invention, is described in French patent Number 2,148,836.

Selon ce brevet, le système de bouchure mobile pour barrage hydraulique est muni d'un dispositif de manoeuvre qui comprend un vérin oscillant monté rotativement par rapport à un axe horizontal lié au radier ou au corps du barrage et un organe de butée orientable autour d'un axe horizontal lié au clapet, qui est agencé pour recevoir en appui l'extrémité de la tige du vérin pendant une manoeuvre de ce clapet.According to this patent, the movable closure system for hydraulic dam is provided with an operating device which comprises an oscillating jack mounted rotatably with respect to a horizontal axis linked to the raft or to the body of the dam and a stop member orientable around a horizontal axis linked to the valve, which is arranged to receive in support the end of the cylinder rod during an operation of this valve.

Ce brevet prévoit que, entre deux manoeuvres, la tige du vérin est rentrée à l'intérieur du corps du vérin, où elle baigne dans l'huile. Ainsi, la tige est protégée de l'action de l'eau, sauf pendant les manoeuvres du clapet, qui sont de courte durée. Cette action de l'eau risquerait de se traduire par une oxydation de la tige du vérin, si l'eau était acide, et par une érosion, si elle contenait des matériaux en suspension.This patent provides that, between two operations, the cylinder rod is returned inside the cylinder body, where it is immersed in oil. Thus, the rod is protected from the action of water, except during the valve maneuvers, which are short-lived. This action of water could result in oxidation of the cylinder rod, if the water was acidic, and in erosion, if it contained suspended materials.

Selon le brevet français N° 2 148 836, le système comprend, en outre, un dispositif d'immobilisation du corps du vérin principal entre deux manoeuvres. Ce dispositif est asservi à l'alimentation du vérin en huile sous forte pression, de sorte que l'immobilisation est supprimée automatiquement au début de chaque manoeuvre.According to French Patent No. 2,148,836, the system further comprises a device for immobilizing the body of the main cylinder between two operations. This device is slaved to supply the cylinder with oil under high pressure, so that the immobilization is automatically removed at the start of each maneuver.

Le système comporte, de plus, un dispositif d'immobilisation de l'organe de butée du clapet entre deux manoeuvres.The system further comprises a device for immobilizing the stop member of the valve between two operations.

Ainsi, entre deux manoeuvres, le corps du vérin d'une part, et l'organe de butée du clapet d'autre part, conservent la position qu'ils occupaient à la fin d'une manoeuvre précédente. Au début d'une nouvelle manoeuvre, la tige du vérin sera donc orientée en direction de la butée qui sera elle-même convenablement disposée pour la recevoir. Ce système d'immobilisation fonctionnerait peut-être de manière satisfaisante. Il serait cependant assez onéreux et relativement complexe, ce qui en réduirait la fiabilité.Thus, between two maneuvers, the cylinder body on the one hand, and the valve stop member on the other hand, retain the position they occupied at the end of a previous maneuver. At the start of a new maneuver, the rod of the jack will therefore be oriented in the direction of the stop which will itself be suitably arranged to receive it. Perhaps this immobilization system would work satisfactorily. It would however be quite expensive and relatively complex, which reduces reliability.

Le but de la présente invention est de remédier à cet inconvénient en réalisant un système de bouchure avec clapet et vérin aval dans lequel la tige du vérin est rentrée à l'intérieur du corps du vérin entre deux manoeuvres, et qui soit en même temps simple, fiable et économique.The object of the present invention is to remedy this drawback by providing a closure system with valve and downstream cylinder in which the cylinder rod is retracted inside the cylinder body between two operations, and which is at the same time simple. , reliable and economical.

Le système de bouchure visé par l'invention comprend au moins un clapet pouvant prendre plusieurs inclinaisons prédéterminées autour d'un axe horizontal lié au radier ou au corps du barrage, chaque clapet étant muni d'un dispositif de manoeuvre comprenant, d'une part, un vérin monté oscillant sur le radier ou le corps du barrage en aval du clapet, et d'autre part, une butée mobile en rotation autour d'un axe horizontal porté par le panneau de clapet ou par le chevalet, et destinée à recevoir l'extrémité libre de la tige du vérin, des moyens étant prévus pour que, entre deux manoeuvres du clapet, la tige du vérin se rétracte entièrement dans le corps de ce dernier.The closure system targeted by the invention comprises at least one valve that can take several predetermined inclinations around a horizontal axis linked to the raft or to the body of the dam, each valve being provided with an operating device comprising, on the one hand , a jack mounted oscillating on the raft or the body of the dam downstream of the valve, and on the other hand, a stop movable in rotation about a horizontal axis carried by the valve panel or by the easel, and intended to receive the free end of the cylinder rod, means being provided so that, between two maneuvers of the valve, the cylinder rod fully retracts into the body of the latter.

Suivant l'invention, ce système de bouchure est caractérisé en ce que le vérin est associé à des moyens de rappel pour donner audit vérin une orientation extrême autour de son axe d'oscillation quand la tige du vérin est écartée de la butée, cette orientation extrême étant voisine des orientations que prend le vérin quand la tige dudit vérin est au contact de la butée dans les différentes inclinaisons prédéterminées du clapet, l'extrémité libre de la tige du vérin et la butée comprenant des - moyens de guidage pour assurer un engagement franc de l'extrémité de la tige du vérin et de la butée quand ces organes viennent en contact mutuel.According to the invention, this closure system is characterized in that the jack is associated with return means to give said jack an extreme orientation around its axis of oscillation when the rod of the jack is moved away from the stop, this orientation extreme being close to the orientations which the jack takes when the rod of said jack is in contact with the stop in the various predetermined inclinations of the valve, the free end of the rod of the jack and the stop comprising - guide means for ensuring engagement straight from the end of the cylinder rod and from the stop when these members come into mutual contact.

Ainsi, le dispositif assez complexe d'immobilisation du corps du vérin entre deux manoeuvres, tel que décrit dans le brevet français Numéro 2 148 836, n'est plus nécessaire. Après chaque manoeuvre du clapet, dès que la tige du vérin quitte la butée pour se rétracter dans le corps du vérin, les moyens de rappel du système conforme à l'invention donnent au vérin son orientation extrême. De ce fait, au début de la manoeuvre suivante, la tige sort du corps du vérin suivant l'orientation extrême précitée. Quand l'extrémité de la tige prend appui sur la butée du clapet, les moyens de guidage amènent automatiquement l'extrémité de la tige en coïncidence avec la butée.Thus, the fairly complex device for immobilizing the body of the jack between two maneuvers, as described in French patent number 2 148 836, is not no longer needed. After each operation of the valve, as soon as the cylinder rod leaves the stopper to retract into the cylinder body, the return means of the system according to the invention give the cylinder its extreme orientation. Therefore, at the start of the next maneuver, the rod leaves the body of the jack in the above-mentioned extreme orientation. When the end of the rod bears on the stop of the valve, the guide means automatically bring the end of the rod in coincidence with the stop.

Selon une particularité de l'invention, les moyens de guidage précités comprennent une zone sphérique de la butée, traversée par ledit axe horizontal porté par le clapet, et une coupelle fixée sur l'extrémité libre de la tige du vérin pour recevoir cette zone sphérique.According to a feature of the invention, the aforementioned guide means comprise a spherical zone of the stop, crossed by said horizontal axis carried by the valve, and a cup fixed on the free end of the cylinder rod to receive this spherical zone .

Comme la butée comporte une zone sphérique, son orientation est indifférente, et il est inutile de prévoir un dispositif d'immobilisation de la butée entre deux manoeuvres du clapet.As the stop comprises a spherical zone, its orientation is indifferent, and there is no need to provide a device for immobilizing the stop between two maneuvers of the valve.

La disposition précitée apporte donc une nouvelle simplification à l'égard de l'art antérieur.The above provision therefore brings a new simplification with respect to the prior art.

Selon une version avantageuse de l'invention, le dimensionnement de la coupelle est tel que, dans chacune desdites positions prédéterminées du clapet, le centre de la zone sphérique de la butée soit situé à l'intérieur du cylindre balayé par la coupelle quand le vérin est disposé suivant l'orientation extrême précitée.According to an advantageous version of the invention, the dimensioning of the cup is such that, in each of said predetermined positions of the valve, the center of the spherical zone of the stop is located inside the cylinder swept by the cup when the jack is arranged in the aforementioned extreme orientation.

De ce fait, la coupelle peut venir en prise avec la zone sphérique de la butée, quelle que soit la position prédéterminée du clapet.As a result, the cup can come into engagement with the spherical zone of the stop, regardless of the predetermined position of the valve.

Dans une version préférée de l'invention, le système de bouchure comprend en outre un clapet en réduction installé à la portéevisuelle d'un opérateur, et des moyens pour donner à ce clapet en réduction un mouvement semblable à celui de l'un des clapets de la bouchure.In a preferred version of the invention, the closing system further comprises a reduction valve installed within the visual range of an operator, and means for giving this reduction valve a movement similar to that of one of the valves from the cover.

Cette version de l'invention permet à un opérateur d'apprécier la position du clapet de bouchure par simple observation du clapet en réduction.This version of the invention allows an operator to assess the position of the plug valve by simply observing the valve in reduction.

D'autres caractéristiques et avantages de l'invention ressortiront encore de la description détaillée qui va suivre.Other characteristics and advantages of the invention will emerge from the detailed description which follows.

Aux dessins annexés, donnés à titre d'exemples non limitatifs, on a représenté plusieurs réalisations de l'invention.

  • - la Figure 1 est une vue en coupe transversale d'un élément de bouchure mobile conforme à l'invention, le clapet étant en position relevée,
  • - la Figure 2 est une vue analogue à la Figure 1, le clapet étant en position couchée,
  • - la Figure 3 est une élévation du chevalet comportant la butée du clapet,
  • - la Figure 4 est un schéma montrant la disposition du vérin et du clapet dans les diverses inclinaisons du clapet,
  • - la Figure 5 est une coupe partielle de la butée et de la coupelle perpendiculaire à l'axe de cette butée montrant la coupelle au moment où elle entre en contact avec la butée, le clapet étant dans sa position d'inclinaison prédéterminée la plus haute,
  • - la Figure 6 est une vue en élévation du chevalet, avec arrachement, montrant une variante de réali= sation de la butée, et
  • - la Figure 7 est une vue schématique du système de commande hydraulique.
In the accompanying drawings, given by way of nonlimiting examples, several embodiments of the invention have been shown.
  • FIG. 1 is a cross-sectional view of a movable closure element according to the invention, the valve being in the raised position,
  • FIG. 2 is a view similar to FIG. 1, the valve being in the supine position,
  • FIG. 3 is an elevation of the easel comprising the stop of the valve,
  • FIG. 4 is a diagram showing the arrangement of the jack and of the valve in the various inclinations of the valve,
  • - Figure 5 is a partial section of the stop and the cup perpendicular to the axis of this stop showing the cup when it comes into contact with the stop, the valve being in its highest predetermined inclination position ,
  • FIG. 6 is an elevation view of the easel, with parts broken away, showing a variant embodiment of the stop, and
  • - Figure 7 is a schematic view of the hydraulic control system.

En référence à la Figure 1, le système de bouchure, monté sur un radier ou un corps de barrage 1, comporte un clapet 2 comprenant un chevalet 3 et un panneau de clapet 4. Le chevalet 3 comprend deux longerons parallèles 5 réunis par deux traverses 6. Par une ex- , trémité de chacun des longerons 5 du chevalet 3, le panneau de clapet 2 est articulé au corps de barrage 1, au moyen d'un axe horizontal 7 porté par deux supports 8a, qui dépendent d'un seuil 8 régnant tout le long de la bouchure et scellé dans le radier ou le corps du barrage.Referring to Figure 1, the sealing system, mounted on a raft or a dam body 1, comprises a valve 2 comprising a bridge 3 and a valve panel 4. The bridge 3 comprises two parallel beams 5 joined by two crosspieces 6. By an ex-, end of each of the side members 5 of the bridge 3, the valve panel 2 is articulated to the dam body 1, by means of a horizontal axis 7 carried by two supports 8a, which depend on a threshold 8 prevailing along the opening and sealed in the raft or the body of the dam .

Le panneau de clapet 4 est articulé à l'autre extrémité des longerons 5 du chevalet 3, selon un axe 9 parallèle à l'axe horizontal 3. Ce panneau de clapet 4 est sensiblement rectangulaire, et l'axe 9 est sensiblement disposé selon une médiane dudit panneau de clapet. Le côté horizontal inférieur 10 du panneau de clapet 4 repose, en position de service, sur le seuil 8.The valve panel 4 is articulated at the other end of the side members 5 of the trestle 3, along an axis 9 parallel to the horizontal axis 3. This valve panel 4 is substantially rectangular, and the axis 9 is substantially arranged in a median of said valve panel. The lower horizontal side 10 of the valve panel 4 rests, in the service position, on the threshold 8.

Un arc-boutant 11 est articulé au clapet 2 selon l'axe 9. Le pied de cet arc-boutant 11 prend l'appui dans l'un des crans d'arrêt 12 d'une glissière 13. Selon que le pied de l'arc-boutant 11 est en appui sur l'un ou l'autre des crans 12, le clapet 2 occupe l'une ou l'autre des positions d'inclinaison prédéterminée, désignées à la Figure 4 par positions P1, P2, P3.A flying buttress 11 is articulated to the valve 2 along the axis 9. The foot of this flying buttress 11 takes support in one of the stop notches 12 of a slide 13. Depending on whether the foot of the flying buttress 11 is supported on one or other of the notches 12, the valve 2 occupies one or the other of the predetermined inclination positions, designated in FIG. 4 by positions P1, P2, P3 .

Comme le montre la Figure 1, un vérin 14 est monté oscillant par rapport au corps de barrage 1 au moyen d'un axe d'oscillation 15 en aval du clapet 2. Un logement 16 est ménagé dans le barrage 1 pour le corps 17 du vérin 14.As shown in Figure 1, a cylinder 14 is mounted to oscillate relative to the barrier body 1 by means of an oscillation axis 15 downstream of the valve 2. A housing 16 is provided in the barrier 1 for the body 17 of the cylinder 14.

Ledit logement est protégé par un capot, non représenté sur les Figures, contre le dépôt de produits solides qui, à la longue, risqueraient de limiter ou d'interdir les mouvements du vérin dans son logement.Said housing is protected by a cover, not shown in the Figures, against the deposition of solid products which, in the long run, might limit or prohibit the movements of the jack in its housing.

Des moyens de commande hydrauliques, décrits plus loin, permettent d'actionner le vérin 14, pour faire sortir ou rentrer sa tige.Hydraulic control means, described below, make it possible to actuate the jack 14, to make its rod come out or come back.

Sensiblement à égale distance entre l'axe horizontal 7 et l'axe 9, le chevalet 3 du clapet 2 porte une butée 19 pour recevoir l'extrémité libre de la tige 18 du vérin 14.Substantially equidistant between the horizontal axis 7 and the axis 9, the easel 3 of the valve 2 carries a stop 19 to receive the free end of the rod 18 of the jack 14.

Conformément à l'invention, la butée 19 comprend des moyens de guidage pour assurer son engagement franc avec l'extrémité de la tige 18 du vérin 14, quand cette dernière vient au contact de ladite butée 19. Ces moyens de guidage comprennent une zone sphérique 20 (Figure 3). Cette zone sphérique 20 est reliée par deux renforts tronconiques 21 à un axe 22 qui la traverse en passant par son centre. L'axe 22 est parallèle à l'axe horizontal 7 et à l'axe 9. Chacune des extrémités de l'axe 22 est portée en rotation libre par une crapaudine 23 assujettie respectivement à un longeron 5 du chevalet 3.According to the invention, the stop 19 comprises guide means for ensuring its frank engagement with the end of the rod 18 of the jack 14, when the latter comes into contact with said stopper 19. These guide means comprise a spherical zone 20 (Figure 3). This spherical zone 20 is connected by two frustoconical reinforcements 21 to an axis 22 which crosses it passing through its center. The axis 22 is parallel to the horizontal axis 7 and to the axis 9. Each of the ends of the axis 22 is carried in free rotation by a clamp 23 subject respectively to a spar 5 of the bridge 3.

En référence à la Figure 1, le vérin 14 est associé à des moyens de rappel comprenant un positionnement de l'axe d'oscillation 15 du vérin 14 tel, que le centre de gravité du vérin 14 soit toujours situé à l'opposé de l'extrémité libre de la tige 18 relativement audit axe d'oscillation 15, même lorsque cette tige 18 est complètement sortie.Referring to Figure 1, the cylinder 14 is associated with return means comprising a positioning of the axis of oscillation 15 of the cylinder 14 such that the center of gravity of the cylinder 14 is always located opposite to the free end of the rod 18 relative to said axis of oscillation 15, even when this rod 18 is fully extended.

Ainsi, le vérin 14 tend en permanence à prendre une orientation extrême de direction AA', dans laquelle la base 24 du corps 17 est en appui contre une paroi 25 du logement 16.Thus, the jack 14 permanently tends to take an extreme orientation of direction AA ′, in which the base 24 of the body 17 bears against a wall 25 of the housing 16.

Cette orientation extrême de direction AA' est voisine des orientations que-prend le vérin 14 dans chacune des positions Pl, P2, P3 du clapet (voir Figure 4).This extreme orientation of direction AA ′ is close to the orientations that the jack 14 takes in each of the positions P1, P2, P3 of the valve (see FIG. 4).

Dans l'exemple représenté, cette particularité résulte du fait que l'axe d'oscillation 15 du vérin 14 rencontre la tangente à 45°, par rapport à l'horizontale, d'un cercle C sur lequel se déplace le centre de la zone sphérique 20 de la butée 19 au cours du mouvement du clapet 2. De plus, le point d'appui de la base 24 du corps 17 du vérin 14 sur la paroi 25 du logement 16 est situé de façon que la direction AA' de l'orientation du vérin soit sensiblement constituée par la tangente au cercle C.In the example shown, this peculiarity results from the fact that the axis of oscillation 15 of the jack 14 meets the tangent at 45 °, with respect to the horizontal, of a circle C on which the center of the zone moves. spherical 20 of the stop 19 during the movement of the valve 2. In addition, the fulcrum of the base 24 of the body 17 of the jack 14 on the wall 25 of the housing 16 is located so that the direction AA ′ of the orientation of the actuator is substantially constituted by the tangent to the circle C.

On a, en outre, prévu que l'orientation extrême du vérin 14 corresponde à celle qu'il prend quand sa tige 18 est au contact de la butée 19 pour l'une des positions P3 des différentes positions possibles du clapet 2.Provision has also been made for the extreme orientation of the jack 14 to correspond to that which it takes when its rod 18 is in contact with the stop 19 for one of the positions P3 of the different possible positions of the valve 2.

En effet, dans l'exemple représenté, les positions Pl, P2, P3 correspondent à une inclinaison prédéterminée du clapet 2 par rapport à la verticale respectivement égale à 20°, 35° et 45° environ.Indeed, in the example shown, the positions P1, P2, P3 correspond to a predetermined inclination of the valve 2 relative to the vertical respectively equal to approximately 20 °, 35 ° and 45 °.

Ainsi, quand le clapet occupe sa position P3, le centre de la zone sphérique 20 de la butée 19 est situé en un point où la direction AA' est tangente au cercle C. Il s'ensuit que, dans cette position P3 du clapet 2, l'axe de la tige 18, en s'étirant hors du corps 17 du vérin 14, rencontre le centre de la butée sphérique 19. L'emboîtement des deux pièces est donc parfait dès qu'elles se rencontrent.Thus, when the valve occupies its position P3, the center of the spherical zone 20 of the stop 19 is located at a point where the direction AA ′ is tangent to the circle C. It follows that, in this position P3 of the valve 2 , the axis of the rod 18, stretching out of the body 17 of the jack 14, meets the center of the spherical stopper 19. The fitting of the two parts is therefore perfect as soon as they meet.

En position P2 du clapet 2, qui correspond à une inclinaison de 35° par rapport à la verticale, on voit que l'orientation du vérin 14, quand l'extrémité libre de la tige 18 est en appui sur la butée 19, est très voisine de l'orientation extrême dudit vérin 14.In position P2 of the valve 2, which corresponds to an inclination of 35 ° relative to the vertical, it can be seen that the orientation of the jack 14, when the free end of the rod 18 is in abutment on the stop 19, is very close to the extreme orientation of said jack 14.

En position Pl du clapet 2, qui correspond à une inclinaison de 20° par rapport à la verticale, l'angle séparant, d'une part, le vérin 14 quand l'extrémité libre de sa tige 18 est en appui stable sur la butée 19 et, d'autre part, la direction AA' de l'orientation extrême dudit vérin 14 reste faible. En conséquence, la distance d (Figures 4 et 5) séparant le centre de la zone sphérique 20 et la direction AA' quand le clapet 2 est en position Pl, est également faible.In position Pl of the valve 2, which corresponds to an inclination of 20 ° relative to the vertical, the angle separating, on the one hand, the jack 14 when the free end of its rod 18 is in stable support on the stop 19 and, on the other hand, the direction AA ′ of the extreme orientation of said jack 14 remains weak. Consequently, the distance d (Figures 4 and 5) separating the center of the spherical zone 20 and the direction AA 'when the valve 2 is in position Pl, is also small.

On appelle D la distance, projetée sur l'horizontale, séparant l'axe horizontal 7 et l'axe d'oscillation 15, H la même distance projetée sur la verticale, R la distance séparant l'axe horizontal 7 et l'axe 22, R étant par conséquent le rayon du cercle C.We call D the distance, projected on the horizontal, separating the horizontal axis 7 and the oscillation axis 15, H the same distance projected on the vertical, R the distance separating the horizontal axis 7 and the axis 22 , R therefore being the radius of circle C.

En pratique, on peut avoir les valeurs numériques suivantes, si la hauteur de la bouchure est faible :

  • D = 1 200 millimètres
  • H = 250 millimètres
  • R = 600 millimètres
In practice, we can have the following numerical values, if the height of the opening is small:
  • D = 1,200 millimeters
  • H = 250 millimeters
  • R = 600 millimeters

De ces données, il résulte :

  • d = 64 millimètres environ.
From this data, it results:
  • d = approximately 64 millimeters.

Si donc on adopte la géométrie décrite ci-dessus pour la disposition du clapet 2 et du vérin 14, on obtient effectivement pour d une valeur faible si on la compare à l'ampleur du dispositif.If therefore one adopts the geometry described above for the arrangement of the valve 2 and of the jack 14, one effectively obtains for d a low value if one compares it with the extent of the device.

Comme le montre la Figure 5, l'extrémité libre de la tige 18 du vérin 14 comprend, comme la butée 19, des moyens de guidage pour assurer un engagement franc de cette extrémité de la tige 18 sur la zone sphérique 20, quand ces organes viennent en contact mutuel.As shown in Figure 5, the free end of the rod 18 of the cylinder 14 comprises, like the stop 19, guide means for ensuring a frank engagement of this end of the rod 18 on the spherical area 20, when these members come into mutual contact.

Ces moyens de guidage comprennent une coupelle 26 fixée à l'extrémité de la tige 18. Cette coupel-le 26 comporte un fond sphérique 27, de préférence de même diamètre que la zone sphérique 20 de la butée 19, prolongé sur tout son pourtour par une bordure tronconique 28 sensiblement tangente à ce fond sphérique 27.These guide means comprise a cup 26 fixed to the end of the rod 18. This cup-26 has a spherical bottom 27, preferably of the same diameter as the spherical zone 20 of the stop 19, extended over its entire periphery by a frustoconical border 28 substantially tangent to this spherical bottom 27.

Le rayon S de la grande base de la bordure tronconique 28 est choisi de telle manière que dans chacune des positions P1, P2, P3, le centre de la zone sphérique 20 est situé à l'intérieur du cylindre balayé par la coupelle 26 quand la tige 18 se déplace par rapport au corps 17 du vérin 14 en orientation extrême.The radius S of the large base of the frustoconical border 28 is chosen so that in each of the positions P1, P2, P3, the center of the spherical zone 20 is located inside the cylinder swept by the cup 26 when the rod 18 moves relative to the body 17 of the jack 14 in extreme orientation.

En d'autres termes, dans le cas de l'exemple représenté, le centre de la zone sphérique 20 est situé, dans chacune des positions Pl, P2, P3 du clapet 2, à l'intérieur d'un cylindre de rayon S et d'axe AA'.In other words, in the case of the example shown, the center of the spherical zone 20 is located, in each of the positions Pl, P2, P3 of the valve 2, inside a cylinder of radius S and of axis AA '.

Ceci revient à adopter, pour la grande base de la bordure tronconique 28 de la coupelle 26 un rayon S plus grand que d.This amounts to adopting, for the large base of the frustoconical edge 28 of the cup 26, a radius S larger than d.

De préférence, le rayon S est supérieur à d d'une distance sensiblement égale à la moitié du rayon de la zone sphérique 20.Preferably, the radius S is greater than d by a distance substantially equal to half the radius of the spherical zone 20.

La profondeur Q de la coupelle 26 est inférieure à la différence entre le rayon de la zone sphérique 20 et le rayon de l'axe 22 de la butée 19.The depth Q of the cup 26 is less than the difference between the radius of the spherical zone 20 and the radius of the axis 22 of the stop 19.

Sur la Figure 2, on voit le panneau de clapet 2 dans sa position couchée, voisine de l'horizontale, dans laquelle le vérin 14 est maintenu suivant une direction BB' par le poids du clapet 2 qui s'exerce au niveau de la butée 19 sur la coupelle 26, laquelle ne peut pas se dégager de ladite butée 19, car la tige 18 est entièrement rétractée.In Figure 2, we see the valve panel 2 in its lying position, close to the horizontal, in which the cylinder 14 is held in a direction BB 'by the weight of the valve 2 which is exerted at the stop 19 on the cup 26, which cannot be disengaged from said stop 19, since the rod 18 is fully retracted.

Cette position est stable du fait que le poids du clapet 2 est suffisant pour exercer au niveau de la butée 19 un moment, par rapport à l'axe d'oscillation 15, supérieur au moment exercé par le poids du vérin 14 par rapport au même axe.This position is stable because the weight of the valve 2 is sufficient to exert at the stop 19 a moment, relative to the axis of oscillation 15, greater than the moment exerted by the weight of the jack 14 relative to the same axis.

Le fonctionnement du système de bouchure conforme à l'invention est le suivant :

  • On supposera d'abord que le clapet occupe l'une de ses positions Pl, P2, P3 et que la tige 18 du vérin 14 est rétractée dans le corps 17.
The operation of the closure system according to the invention is as follows:
  • It will first be assumed that the valve occupies one of its positions P1, P2, P3 and that the rod 18 of the jack 14 is retracted in the body 17.

Le vérin 14, sous l'effet de son poids, est en appui sur la paroi 25 du logement 16, et est donc orienté selon la direction AA'.The jack 14, under the effect of its weight, is supported on the wall 25 of the housing 16, and is therefore oriented in the direction AA '.

Pour changer la position du clapet 2, on commande le vérin 14 de façon connue pour que la tige 18 sorte du corps 17. Au cours de ce mouvement, le vérin 14 conserve son orientation extrême, jusqu'à ce que la coupelle 26 rencontre la zone sphérique 20 de la butée 19.To change the position of the valve 2, the actuator 14 is controlled in a known manner so that the rod 18 comes out of the body 17. During this movement, the actuator 14 retains its extreme orientation, until the cup 26 meets the spherical zone 20 of the stop 19.

Comme le rayon S (Figure 5) est supérieur à la distance d, quelle que soit la position prédéterminée P1, P2, P3 occupée par le clapet 2, cette rencontre aura lieu.As the radius S (Figure 5) is greater than the distance d, whatever the predetermined position P1, P2, P3 occupied by the valve 2, this meeting will take place.

Comme de plus, ce rayon S est supérieur à la distance d d'environ la moitié du rayon de la zone sphérique 20, même en position P1 la plus défavorable pour la rencontre, non seulement cette rencontre aura certainement lieu, mais, en outre, le bord de la coupelle 26 rencontrera la zone sphérique 20 au-delà de son axe polaire GG' parallèle à la direction AA', en un point F dont le rayon associé de la zone sphérique 20 fait un angle T d'au moins 30° avec ledit axe polaire GG'.As moreover, this radius S is greater than the distance d by approximately half the radius of the spherical zone 20, even in the most unfavorable position P1 for the encounter, not only will this encounter certainly take place, but, moreover, the edge of the cup 26 will meet the spherical zone 20 beyond its polar axis GG 'parallel to the direction AA', at a point F whose associated radius of the spherical zone 20 makes an angle T of at least 30 ° with said polar axis GG '.

Dans la suite du mouvement d'extension de la tige 18, l'axe 22 de la zone sphérique 20 pivote dans ses crapaudines 23, et la zone sphérique 20 roule dans le fond sphérique 27 de la coupelle 26, pendant que le vérin 14 quitte son orientation extrême pour s'orienter progressivement en direction du centre de la zone sphérique 20. L'angle T étant prévu suffisamment grand, les mouvements des deux pièces se combineront comme il vient d'être indiqué, malgré les frottements inévitables dans les crapaudines 23, malgré le frottement autour de l'axe 15 et malgré la prépondérance de poids du corps 17 du vérin 14. - In the continuation of the extension movement of the rod 18, the axis 22 of the spherical zone 20 pivots in its straps 23, and the spherical zone 20 rolls in the spherical bottom 27 of the cup 26, while the jack 14 leaves its extreme orientation to orient gradually towards the center of the spherical area 20. The angle T being provided sufficiently large, the movements of the two parts will combine as just indicated, despite the inevitable friction in the crapaudines 23 , despite the friction around the axis 15 and despite the preponderance of weight of the body 17 of the jack 14. -

Le raisonnement comme l'expérience faite sur une maquette montrent, d'ailleurs, que ces déplacements réciproques se produisent même si l'angle T est relativement petit. Comme on le voit sur la Figure 5, l'angle T ne changerait de signe que si l'écart d devenait supérieur au rayon S de la coupelle.The reasoning as the experiment made on a model show, moreover, that these reciprocal displacements occur even if the angle T is relatively small. As seen in Figure 5, the angle T would only change sign if the difference d became greater than the radius S of the cup.

Grâce à la symétrie sphérique des parties portantes de la butée 19 et de l'extrémité de la tige 18, à savoir la zone sphérique 20 et la coupelle 26, dans le cas où la tige 18 du vérin 14 viendrait à tourner sur son axe longitudinal au cours d'une manoeuvre, la rencontre de la coupelle 26 et de la zone sphérique 20 n'en serait pas affectée. Une telle rotation d'une tige de vérin est d'ailleurs fréquente.Thanks to the spherical symmetry of the bearing parts of the stop 19 and of the end of the rod 18, namely the spherical zone 20 and the cup 26, in the case where the rod 18 of the jack 14 would rotate on its longitudinal axis during a maneuver, the meeting of the cup 26 and the spherical zone 20 does not would not be affected. Such rotation of an actuator rod is moreover frequent.

La suite de la manoeuvre s'effectue de façon connue, jusqu'à ce que le clapet 2 soit installé dans sa nouvelle position d'inclinaison prédéterminée P1, P2, P3.The rest of the maneuver is carried out in a known manner, until the valve 2 is installed in its new predetermined tilt position P1, P2, P3.

On commande ensuite de façon connue le retrait de la tige 18. Au fur et à mesure que la coupelle 26 se sépare de la butée 19, le vérin 14 reprend progressivement son orientation extrême sous l'effet de son poids. La tige 18 se rétracte jusqu'à occuper sa position entièrement rétractée.The withdrawal of the rod 18 is then controlled in a known manner. As the cup 26 separates from the stop 19, the jack 14 gradually returns to its extreme orientation under the effect of its weight. The rod 18 retracts until it occupies its fully retracted position.

Avant de décrire la manoeuvre à effectuer pour coucher le clapet 2, alors qu'il occupe l'une des positions P1, P2 ou P3, il convient de rappeler les dispositions essentielles de la glissière, dont les formes, qui guident l'extrémité inférieure de l'arc-boutant dans tous ses déplacements, présentent les particularités suivantes.Before describing the maneuver to be carried out to fold the valve 2, while it occupies one of the positions P1, P2 or P3, it is advisable to recall the essential provisions of the slide, including the shapes, which guide the lower end flying buttress in all its movements, have the following characteristics.

Si, partant de la position P3, on relève légèrement le clapet, il suffit, grâce à un dispositif d'échappement, de le laisser redescendre pour le coucher. En partant de P2, on ne peut coucher directement, et il convient d'attendre et de dépasser la position Pl. - En partant de P1, un léger déplacement vers l'amont suivi d'une descente amène, grâce à un autre échappement, le clapet en position P3. En partant de cette dernière position, on peut coucher le clapet, ainsi qu'il a été dit plus haut. Le détail des opérations à effectuer, pour passer d'une position à une autre, se déduit de ce qui précède.If, starting from position P3, the valve is raised slightly, it is sufficient, thanks to an exhaust device, to let it come back down to bed. Starting from P2, you cannot sleep directly, and you should wait and exceed the position Pl. - Starting from P1, a slight displacement upstream followed by a descent leads, thanks to another exhaust, the valve in position P3. Starting from this last position, the valve can be folded down, as mentioned above. The detail of the operations to be carried out, to pass from one position to another, is deduced from the above.

Pour faire passer le clapet en position couchée alors qu'il se trouve en position P3, on commande la tige 18 pour lui faire soulever le clapet 2, comme il est exposé ci-dessus. On l'amène ainsi à une position un peu plus proche de la verticale que la position P3. En raison de la forme de la glissière 13, il suffit alors de laisser rentrer complètement la tige 18 du vérin 14, la pression de la zone sphérique 19 sur la coupelle 26 persistant jusqu'à la fin de cette manoeuvre. Lorsque celle-ci est terminée, le panneau de clapet est horizontal, la tige du vérin 14 est à fond de course, et la zone sphérique 20 reste emboîtée dans la coupelle 26.To pass the valve in the supine position while it is in position P3, the rod 18 is controlled to make it lift the valve 2, as described above. So we bring it to a slightly closer to vertical than position P3. Due to the shape of the slide 13, it suffices then to let the rod 18 of the jack 14 fully retract, the pressure of the spherical zone 19 on the cup 26 persisting until the end of this maneuver. When this is completed, the valve panel is horizontal, the rod of the jack 14 is at the bottom of the travel, and the spherical zone 20 remains fitted into the cup 26.

Pour ramener ledit clapet 2 de sa position couchée à l'une des positions Pl, P2, P3, on le soulève à l'aide du vérin 14, jusqu'à ce qu'il dépasse très légèrement l'une des positions P1, P2 ou P3. On inverse alors le sens du mouvement de la tige 18 pour la faire rentrer complètement dans le corps 17 du vérin 14. Au début de ce mouvement de descente, la zone sphérique 20 exerce une pression sur la coupelle 26, mais cette pression cesse brusquement dès que le pied de l'arc-boutant 11 prend appui sur l'un des crans 12 de la glissière 13.To return said valve 2 from its lying position to one of the positions P1, P2, P3, it is raised using the jack 14, until it very slightly exceeds one of the positions P1, P2 or P3. The direction of movement of the rod 18 is then reversed in order to make it completely enter the body 17 of the jack 14. At the start of this downward movement, the spherical zone 20 exerts pressure on the cup 26, but this pressure abruptly ceases as soon as that the foot of the flying buttress 11 is supported on one of the notches 12 of the slide 13.

On voit ainsi que, par rapport à l'état de la technique, la présente invention apporte une simplification considérable aux systèmes de bouchure à clapet et vérin aval antérieurs, tout en conservant tous les avan--tages de ces derniers.It can thus be seen that, with respect to the state of the art, the present invention brings a considerable simplification to the prior closure valve and cylinder closure systems, while retaining all the advantages of the latter.

Le système antérieur ne pourrait fonctionner que si l'on parvenait à éviter toute défaillance de l'un et l'autre des deux procédés de blocage prévus. Le système conforme à l'invention est moins coûteux et il est surtout beaucoup plus fiable.The previous system could only function if one managed to avoid any failure of either of the two blocking methods provided. The system according to the invention is less expensive and above all it is much more reliable.

Comme le montre la Figure 6, selon une variante du système de butée, le chevalet 3 porte, au lieu de l'axe 22, un axe fixe 22a sur lequel est montée en rotation une sphère 19a.As shown in Figure 6, according to a variant of the stop system, the bridge 3 carries, instead of the axis 22, a fixed axis 22a on which is mounted in rotation a sphere 19a.

Cette deuxième disposition permet d'adopter, pour l'axe 22a, un diamètre.inférieur à celui des extrémités de l'axe 22. Une telle réduction de diamètre facilite la rotation de la sphère.This second arrangement makes it possible to adopt, for the axis 22a, a diameter less than that of the ends of the axis 22. Such a reduction in diameter facilitates the rotation of the sphere.

Dans ce dernier système, comme dans le système comportant l'axe 22 tournant, une première adaptation réciproque des positions se produit lorsque les deux pièces se rapprochent l'une de l'autre : la sphère 19a ou l'axe 22 tournent pendant que la coupelle, et avec elle la tige du vérin, se déplace pour que son axe vienne rencontrer respectivement l'axe 22a ou 22.In this latter system, as in the system comprising the rotating axis 22, a first reciprocal adaptation of the positions occurs when the two parts approach each other: the sphere 19a or the axis 22 rotate while the cup, and with it the cylinder rod, moves so that its axis comes to meet respectively the axis 22a or 22.

Mais, dans le système comportant l'axe 22a fixe, et dans lui seul, une deuxième modification des positions réciproques se produit si la sphère 19a, s'étant légèrement déplacée sur son axe 22a, son centre ne se trouve plus rigoureusement dans le plan vertical de symétrie balayée par l'axe de la tige 18 du vérin. Ainsi qu'on l'a vérifié sur une maquette expérimentale, la coupelle 26 agit alors latéralement sur la sphère 19a pour la faire glisser sur l'axe 22a et la ramener dans le plan de symétrie. C'est cette fois la coupèlle 26 qui déplace la sphère 19a, et non plus l'inverse.But, in the system comprising the fixed axis 22a, and in it alone, a second modification of the reciprocal positions occurs if the sphere 19a, having moved slightly on its axis 22a, its center is no longer strictly in the plane vertical symmetry swept by the axis of the rod 18 of the jack. As has been verified on an experimental model, the cup 26 then acts laterally on the sphere 19a to slide it on the axis 22a and bring it back into the plane of symmetry. This time it is the cup 26 which moves the sphere 19a, and no longer the reverse.

Ces changements de position interviennent avant que les deux pièces soient encastrées l'une dans l'autre, de sorte que les efforts en cause restent faibles.These position changes occur before the two parts are embedded in each other, so that the forces involved remain low.

Il en va tout différemment lorsque l'encastrement est complètement réalisé. A partir de ce moment, qu'on ait choisi l'une ou l'autre des deux formules de réalisation pour le système de butée, les deux pièces sont comme soudées l'une à l'autre, en ce sens que, dans la suite de la manoeuvre, elles ne subissent plus aucun déplacement relatif.It is quite different when the installation is completely completed. From this moment, whether one or the other of the two formulas for the stop system has been chosen, the two parts are as if welded to each other, in the sense that, in the following the maneuver, they no longer undergo any relative displacement.

Une comparaison permettra de mieux comprendre la nature des relations réciproques des deux pièces. Lorsqu'elles sont ainsi encastrées, l'ensemble est comparable à une bielle dont la tête est constituée par la sphère 19, 19a, et le corps par la tige 18 du vérin.A comparison will allow a better understanding of the nature of the reciprocal relationships of the two parts. When they are thus fitted, the assembly is comparable to a connecting rod, the head of which is constituted by the sphere 19, 19a, and the body by the rod 18 of the jack.

Cette bielle présente la particularité de pouvoir, lorsqu'elle n'a pas d'efforts à transmettre, se diviser e-, deux parties, afin que le corps de la bielle aille momentanément se mettre à l'abri de la rouille, dans le cylindre du vérin 14.This connecting rod has the particularity of being able, when it has no efforts to transmit, to divide e-, two parts, so that the body of the rod goes temporarily to take shelter from rust, in the cylinder of the jack 14.

Après une séparation, les deux pièces reviennent au voisinage l'une de l'autre et elles se déplacent réciproquement pour se resouder.After a separation, the two pieces return to the vicinity of each other and they move reciprocally to re-weld.

On a indiqué le processus à suivre pour faire passer un clapet d'une position à une autre. Ce processus comporte toujours une sortie de la tige du vérin suivie d'une rentrée consécutive.The process for moving a valve from one position to another has been outlined. This process always involves an exit from the cylinder rod followed by a consecutive retraction.

Pour commander ces déplacements de la tige du vérin, on a indiqué plus haut que l'on procédait de façon connue, mais un dispositif inédit est toutefois prévu dans le cadre de la présente invention.To control these movements of the cylinder rod, it was indicated above that we proceeded in a known manner, but a new device is however provided in the context of the present invention.

Ce dispositif permet à l'opérateur de suivre le détail des déplacements complexes du pied de l'arc-boutant dans la glissière. Si un incident, d'ailleurs fort improbable,venait à se produire au cours d'une manoeuvre, l'opérateur pourrait ainsi en déterminer facilement l'origine. Si, au contraire, on se contentait de mettre à sa disposition des boutons poussoirs commandant les diverses manoeuvres, il ne pourrait pas connaître d'une façon simple l'origine d'un dérangement.This device allows the operator to follow the details of the complex movements of the foot of the flying buttress in the slide. If an incident, moreover highly improbable, were to occur during a maneuver, the operator could thus easily determine the origin. If, on the contrary, we were content to put at his disposal push buttons controlling the various maneuvers, he could not know in a simple way the origin of a fault.

Il est difficile pour l'opérateur d'observer directement ces déplacements, qui s'effectuent sur le radier du barrage et sous le niveau de la retenue aval, mais, comme on va le voir, on peut lui en donner une vision symbolique.It is difficult for the operator to directly observe these displacements, which take place on the raft of the dam and below the level of the downstream reservoir, but, as we will see, we can give him a symbolic vision.

A cet effet, on place dans la cabine de manoeuvre un élément de barrage de dimensions réduites et on fait en sorte que cet élément se déplace en restant constamment dans une position semblable à celle qui est occupée par l'élément du barrage dont on commande le déplacement.For this purpose, a barrier element of reduced dimensions is placed in the maneuvering cabin and it is made so that this element moves while remaining constantly in a position similar to that occupied by the element of the barrier whose control is displacement.

La Figure 7 représente l'un des dispositifs hydrauliques qui peuvent être utilisés pour réaliser le synchronisme en question.Figure 7 shows one of the hydraulic devices that can be used to achieve the synchronism in question.

Sur cette Figure 7, on a adopté pour l'élément réduit, une échelle linéaire de réduction de 1/5 par rapport à l'élément de bouchure, ce qui correspond à une division par 125 des volumes d'huile.In this Figure 7, we adopted for the reduced element, a linear scale of reduction of 1/5 with respect to the closure element, which corresponds to a division by 125 of the oil volumes.

En référence à la Figure 7, on voit en 14 le vérin associé à l'élément que l'on va manoeuvrer, et qui se trouve évidemment dans le barrage. Le vérin 30 de l'élément réduit se trouve au contraire dans le poste de commande. Le moteur électrique 31 actionne par une courroie crantée 34 une grosse pompe à huile 32 et, par une deuxième courroie 34a, une petite pompe 33. Le débit refoulé par cette dernière est, dans le cas du rapport linéaire 1/5, cent vingt cinq fois plus faible que celui de la grosse pompe 32.Referring to Figure 7, we see at 14 the cylinder associated with the element that we are going to operate, and which is obviously located in the dam. The cylinder 30 of the reduced element is on the contrary in the control station. The electric motor 31 actuates by a toothed belt 34 a large oil pump 32 and, by a second belt 34a, a small pump 33. The flow discharged by the latter is, in the case of the linear ratio 1/5, one hundred and twenty five times lower than that of the big pump 32.

Les pompes 32, 33 alimentent des distributeurs 36 et 36a dont les leviers de commande sont couplés par une barre 37. Des conduites 38, 38a, 39, 39a, représentent symboliquement l'ensemble de la distribution alimentant, par l'intermédiaire d'un jeu de valves commandées électriquement par des boutons, le compartiment supérieur et le compartiment inférieur du vérin 14 correspondant à l'un quelconque des clapets constituant la bouchure.The pumps 32, 33 supply distributors 36 and 36a, the control levers of which are coupled by a bar 37. Lines 38, 38a, 39, 39a, symbolically represent the entire distribution supplying, via a set of valves electrically controlled by buttons, the upper compartment and the lower compartment of the jack 14 corresponding to any one of the valves constituting the opening.

Au moment de la mise en marche du moteur, les distributeurs 36, 36a sont l'un et l'autre dans une position telle que l'huile retourne à la réserve 35 par les conduites 40 et 40a.When the engine is started, the distributors 36, 36a are both in a position such that the oil returns to the reserve 35 via the lines 40 and 40a.

Par l'intermédiaire d'un levier, qui n'est pas représenté, on déplace vers la droite ou vers la gauche la barre 37 d'accouplement des commandes des distributeurs 36 et 36a. L'huile refoulée va soit dans le compartiment supérieur des deux vérins, soit dans le compartiment inférieur. Les déplacements des deux tiges de vérins seront donc homothétiques et il en sera de même de l'élément du barrage et de la maquette placée sousles yeux du mécanicien. C'est en observant les déplacements du pied de l'arc-boutant dans la glissière en réduction que le mécanicien procédera au déplacement vers la droite ou vers la gauche de la barre d'accouplement 37 pour provoquer la montée ou la descente des clapets.By means of a lever, which is not shown, the bar 37 for coupling the controls of the distributors 36 and 36a is moved to the right or to the left. The pumped oil goes either to the upper compartment of the two cylinders, or to the lower compartment. The displacements of the two rods cylinders will be homothetic and it will be the same for the element of the dam and the model placed under the eyes of the mechanic. It is by observing the movements of the foot of the flying buttress in the reduced slide that the mechanic will move to the right or to the left of the coupling rod 37 to cause the valves to go up or down.

Ce dispositif de commande du clapet se combine avec le système coupelle-sphère et conforte ses avantages d'automaticité en limitant au maximum les interventions de l'opémteur sur le radier ou corps de barrage.This valve control device combines with the sphere-cup system and consolidates its automaticity advantages by limiting as much as possible the operator's intervention on the raft or barrage.

Bien entendu, l'invention n'est pas limitée aux exemples qui viennent d'être décrits, et de nombreux aménagements, modifications ou perfectionnements peuvent y être apportés, sans sortir du cadre de l'invention.Of course, the invention is not limited to the examples which have just been described, and numerous arrangements, modifications or improvements can be made thereto, without departing from the scope of the invention.

C'est ainsi que, par exemple, les moyens de _ rappel pour donner au vérin 14 son orientation extrême, peuvent comprendre un ressort agissant entre le radier ou corps de barrage 1 d'une part, et le vérin 14 d'autre part.Thus, for example, the return means for giving the jack 14 its extreme orientation, may comprise a spring acting between the raft or barrage body 1 on the one hand, and the jack 14 on the other hand.

Il est également possible de prévoir que le clapet ne comprenne pas de chevalet 3, le panneau de clapet étant directement articulé au corps de barrage et portant de façon articulée, la butée et l'arc-boutant.It is also possible to provide that the valve does not include an easel 3, the valve panel being directly articulated to the barrier body and carrying in an articulated manner, the stop and the flying buttress.

Claims (13)

1. Système de bouchure pour barrage hydraulique (1) comprenant au moins un clapet (2) pouvant prendre plusieurs inclinaisons prédéterminées autour d'un axe horizontal (7) lié au radier ou au corps du barrage (1), chaque clapet (2) étant muni d'un dispositif de manoeuvre comprenant, d'une part, un vérin (14) monté oscillant sur le radier ou le corps du barrage (1) en aval du clapet (2), et d'autre part une butée (19) mobile en rotation selon un axe horizontal (22, 22a) porté par le clapet (2) et destinée à recevoir l'extrémité libre de la tige (18) du vérin (14), des moyens étant prévus pour que, entre deux manoeuvres dudit clapet (2), la tige (18) du vérin (14) se rétracte entièrement dans le corps (17) de ce dernier, caractérisé en ce que le vérin (14) est associé à des moyens de rappel pour donner audit vérin (14) une orientation extrême (AA') autour de son axe d'oscillation (15) quand la tige (18) du vérin (14) est écartée de la butée (19), cette orientation extrême (AA') étant voisine des orientations que prend le vérin (14) quand la tige (18) dudit vérin (14) est au contact de la butée (19) dans les différentes inclinaisons prédéterminées du clapet (2), l'extrémité de la tige (18) du vérin (14) et la butée (19) comprenant des moyens de guidage (20, 26) pour assurer un engagement franc de l'extrémité de la tige (18) du vérin (14) et de la butée (19), quand ces organes (18, 19) viennent en contact mutuel.1. Closing system for hydraulic dam (1) comprising at least one valve (2) which can take several predetermined inclinations around a horizontal axis (7) linked to the raft or to the body of the dam (1), each valve (2) being provided with an operating device comprising, on the one hand, a jack (14) mounted oscillating on the raft or the body of the dam (1) downstream of the valve (2), and on the other hand a stop (19 ) movable in rotation along a horizontal axis (22, 22a) carried by the valve (2) and intended to receive the free end of the rod (18) of the jack (14), means being provided so that, between two maneuvers of said valve (2), the rod (18) of the jack (14) fully retracts into the body (17) of the latter, characterized in that the jack (14) is associated with return means for giving to said jack ( 14) an extreme orientation (AA ') around its axis of oscillation (15) when the rod (18) of the jack (14) is moved away from the stop (19), this extreme orientation (AA') being seen ine orientations that takes the jack (14) when the rod (18) of said jack (14) is in contact with the stop (19) in the various predetermined inclinations of the valve (2), the end of the rod (18) of the jack (14) and the stop (19) comprising guide means (20, 26) for ensuring a frank engagement of the end of the rod (18) of the jack (14) and of the stop (19), when these organs (18, 19) come into mutual contact. 2. Système de bouchure conforme à la revendication 1, caractérisé en ce que les moyens de guidage comprennent une zone sphérique (20) de la butée (19) traversée par ledit axe horizontal (22, 22a) porté par le clapet (2), et une coupelle (26) fixée sur l'extrémité libre de la tige (18) du vérin (14) pour recevoir cette zone sphérique (20).2. Clogging system according to claim 1, characterized in that the guide means comprise a spherical zone (20) of the stop (19) crossed by said horizontal axis (22, 22a) carried by the valve (2), and a cup (26) fixed on the free end of the rod (18) of the jack (14) to receive this spherical zone (20). 3. Système de bouchure conforme à la revendication 2, caractérisé en ce que le dimensionnement de la coupel- le (26) est tel que, dans chacune desdites positions prédéterminées(P1, P2, P3) du clapet (2), le centre de la zone sphérique (20) de la butée (19) est situé à l'intérieur du cylindre balayé par la coupelle (26), quand le vérin (14) est disposé suivant l'orientation extrême (AA') précitée.3. Sealing system according to claim 2, characterized in that the dimensioning of the cup (26) is such that, in each of said predetermined positions (P1, P2, P3) of the valve (2), the center of the spherical zone (20) of the stop (19) is located inside the cylinder swept by the cup (26), when the jack (14) is arranged in the above-mentioned extreme orientation (AA '). 4. Système de bouchure conforme à l'une des revendications 2 ou 3, caractérisé en ce que la direction du vérin (14) dans son orientation extrême (AA') est tangente au cercle (C) décrit par le centre de la zone sphérique (20) autour de l'axe (7) du clapet (2), et en ce qu'en une (P2) des positions prédéterminées (P1, P2, P3) du clapet (2), le centre de la zone sphérique (20) est situé au point où la direction de l'orientation extrême (AA') du vérin (14) est tangente au cercle (C) décrit par le centre de la zone sphérique (20).4. Sealing system according to one of claims 2 or 3, characterized in that the direction of the jack (14) in its extreme orientation (AA ') is tangent to the circle (C) described by the center of the spherical zone (20) around the axis (7) of the valve (2), and in that in one (P2) of the predetermined positions (P1, P2, P3) of the valve (2), the center of the spherical zone ( 20) is located at the point where the direction of the extreme orientation (AA ') of the jack (14) is tangent to the circle (C) described by the center of the spherical area (20). 5. Système de bouchure conforme à l'une des revendications 1 à 4, caractérisé en ce que les moyens de rappel précités comprennent le fait que le centre de gravité du vérin (14) reste situé du même côté par rapport à son axe d'oscillation (15),quelle que soit la position de la tige (18) du vérin (14).5. Clogging system according to one of claims 1 to 4, characterized in that the aforementioned return means include the fact that the center of gravity of the jack (14) remains located on the same side relative to its axis of oscillation (15), whatever the position of the rod (18) of the jack (14). 6. Système conforme à l'une des revendications 1 à 5, caractérisé en ce que les moyens de rappel comprennent un ressort de rappel monté entre le vérin, d'une part, et le radier ou corps du barrage, d'autre part.6. System according to one of claims 1 to 5, characterized in that the return means comprise a return spring mounted between the cylinder, on the one hand, and the raft or body of the dam, on the other hand. 7. Système conforme à l'une des revendications 1 à 6, dans lequel le corps (17) du vérin (14) est disposé dans un logement (16) ménagé dans le radier ou le corps du barrage (1), caractérisé en ce que, dans l'orientation extrême (AA') du vérin (14), les moyens de rappel maintiennent le corps de ce vérin (14) en appui sur une paroi (25) de ce logement (16).7. System according to one of claims 1 to 6, wherein the body (17) of the jack (14) is disposed in a housing (16) formed in the raft or the body of the dam (1), characterized in that that, in the extreme orientation (AA ') of the jack (14), the return means keep the body of this jack (14) in abutment on a wall (25) of this housing (16). 8. Système de bouchure conforme à l'une des revendications 2 à 7, caractérisé en ce que le clapet (2) peut, en outre, prendre une position couchée dans laquelle la tige (18) du vérin (14) est entièrement rétractée dans le corps (17) du vérin (14) quand la zone sphérique (20) est au contact de la coupelle (26), et dans laquelle le vérin (14) est écarté de son orientation extrême (AA') sous l'effet du poids du clapet (2).8. Clogging system according to one of claims 2 to 7, characterized in that the valve (2) can, moreover, take a lying position in which the rod (18) of the jack (14) is fully retracted in the body (17) of the jack (14) when the spherical zone (20) is in contact with the cup (26), and in which the jack (14) is moved away from its extreme orientation (AA ') under the effect of the weight of the valve (2). 9. Système de bouchure conforme à l'une des revendications 2 à 8, caractérisé en ce que la coupelle (26) comprend un fond sphérique (27) dont le diamètre est sensiblement égal à celui de la zone sphérique (20) de la butée (19).9. Clogging system according to one of claims 2 to 8, characterized in that the cup (26) comprises a spherical bottom (27) whose diameter is substantially equal to that of the spherical zone (20) of the stop (19). 10. Système de bouchure conforme à la revendication 9, caractérisé en ce que le fond sphérique (27) précité est prolongé sur son pourtour par une bordure tronconique (28) sensiblement tangente à ce fond sphérique (27).10. Milling system according to claim 9, characterized in that the aforementioned spherical bottom (27) is extended around its periphery by a frustoconical border (28) substantially tangent to this spherical bottom (27). 11. Système de bouchure conforme à l'une des revendications 1 à 10, caractérisé en ce que l'axe de rotation horizontal (22) porté par le clapet (2) comprend une tige horizontale (22) solidaire de la zone sphérique (20) de la butée (19) et montée en rotation à ses deux extrémités entre deux crapaudines (23) du clapet (2), cette zone sphérique (20) se raccordant à la tige par deux renforts tronconiques (21).11. Clogging system according to one of claims 1 to 10, characterized in that the horizontal axis of rotation (22) carried by the valve (2) comprises a horizontal rod (22) integral with the spherical area (20 ) of the stop (19) and mounted in rotation at its two ends between two flaps (23) of the valve (2), this spherical area (20) connecting to the rod by two frustoconical reinforcements (21). 12. Système de bouchure conforme à l'une des revendications 1 à 10, caractérisé en ce que l'axe horizontal (22a) portant la butée (19) est fixe et traverse une pièce de butée (19a),qui est susceptible de tourner autour dudit axe (22a) et qui comporte une zone centrale sphérique.12. Sealing system according to one of claims 1 to 10, characterized in that the horizontal axis (22a) carrying the stop (19) is fixed and passes through a stop piece (19a), which is capable of turning around said axis (22a) and which has a spherical central zone. 13. Système de bouchure conforme à l'une des revendications 1 à 12, caractérisé en ce qu'il comprend, en outre, un clapet en réduction destiné à être installé à la portée visuelle d'un opérateur, et des moyens pour donner à ce clapet en réduction un mouvement semblable à celui de l'un des clapets (2) de la bouchure.13. Clogging system according to one of claims 1 to 12, characterized in that it further comprises a reduction valve intended to be installed within the visual range of an operator, and means for giving this valve in reduction a movement similar to that of one of the valves (2) of the mouth.
EP80400729A 1979-06-12 1980-05-23 Sealing system for hydraulic barrage Expired EP0021880B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80400729T ATE6083T1 (en) 1979-06-12 1980-05-23 BARRIER CLOSURE FOR HYDRAULIC BLOCK.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7914986A FR2458633A1 (en) 1979-06-12 1979-06-12 BUSHING SYSTEM FOR HYDRAULIC DAM
FR7914986 1979-06-12

Publications (2)

Publication Number Publication Date
EP0021880A1 true EP0021880A1 (en) 1981-01-07
EP0021880B1 EP0021880B1 (en) 1984-02-01

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EP80400729A Expired EP0021880B1 (en) 1979-06-12 1980-05-23 Sealing system for hydraulic barrage

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US (1) US4352592A (en)
EP (1) EP0021880B1 (en)
AT (1) ATE6083T1 (en)
BR (1) BR8003641A (en)
DE (1) DE3066362D1 (en)
EG (1) EG14760A (en)
FR (1) FR2458633A1 (en)
HU (1) HU184298B (en)
PL (1) PL224923A1 (en)
YU (1) YU156180A (en)

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DE3401010A1 (en) * 1984-01-13 1985-07-18 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Flood-protection dam
FR2570728A1 (en) * 1984-09-21 1986-03-28 Aubert J Swinging jack assembly for gates of a dam

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US4881848A (en) * 1988-07-26 1989-11-21 Davy Mckee Corporation Method of forming an immersed dam foundation and a dam structure thereon
US5199812A (en) * 1991-09-10 1993-04-06 The United States Of America As Represented By The Secretary Of The Army Hydraulic fixed strut game
US5310284A (en) * 1992-07-02 1994-05-10 The United States Of America As Represented By The Secretary Of The Army Weak link prop for wicket dam
US5222834A (en) * 1992-07-02 1993-06-29 The United States Of America As Represented By The U.S. Army Corps Of Engineers Collapsible safety prop for waterway dams
US5178490A (en) * 1992-07-02 1993-01-12 The United States Of America As Represented By The Secretary Of The Army Wicket dam lifting module
US5433555A (en) * 1994-02-22 1995-07-18 Nancy Brac De La Perriere Wicket dam and lifting jack
SE507170C2 (en) * 1995-08-11 1998-04-20 Sten Kullberg Procedure and arrangement in preparing a water dam
FR2743829A1 (en) * 1996-01-19 1997-07-25 Hydroplus AUTOMATIC RISE FOR HYDRAULIC WORK SUCH AS THRESHOLD IN RIVER, OVERFLOW ON A DAM OR ON A PROTECTION DYE
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US10920387B1 (en) * 2019-10-11 2021-02-16 Luis D. Rivera-Rivera Miter gate actuator
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FR1047019A (en) * 1951-12-20 1953-12-10 Sliding device for dam raising
FR1217143A (en) * 1958-12-01 1960-05-02 Entpr D Equipements Mecaniques Hydraulic shut-off valve
FR2148836A5 (en) * 1971-08-05 1973-03-23 Aubert J

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US2335327A (en) * 1941-11-10 1943-11-30 Charles M Wellons Wicket
FR2098929A5 (en) * 1970-07-31 1972-03-10 Aubert J
GB1506079A (en) * 1975-09-18 1978-04-05 Nomura T Water gate control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1047019A (en) * 1951-12-20 1953-12-10 Sliding device for dam raising
FR1217143A (en) * 1958-12-01 1960-05-02 Entpr D Equipements Mecaniques Hydraulic shut-off valve
FR2148836A5 (en) * 1971-08-05 1973-03-23 Aubert J

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3401010A1 (en) * 1984-01-13 1985-07-18 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Flood-protection dam
FR2570728A1 (en) * 1984-09-21 1986-03-28 Aubert J Swinging jack assembly for gates of a dam

Also Published As

Publication number Publication date
EP0021880B1 (en) 1984-02-01
YU156180A (en) 1983-04-30
HU184298B (en) 1984-07-30
FR2458633B1 (en) 1982-11-19
FR2458633A1 (en) 1981-01-02
ATE6083T1 (en) 1984-02-15
PL224923A1 (en) 1981-04-24
BR8003641A (en) 1981-01-05
EG14760A (en) 1985-06-30
DE3066362D1 (en) 1984-03-08
US4352592A (en) 1982-10-05

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