EP0045697A1 - Hydraulic apparatus permitting the disconnection of a fluid-transferring articulated arm, especially for an urgent disconnection - Google Patents

Hydraulic apparatus permitting the disconnection of a fluid-transferring articulated arm, especially for an urgent disconnection Download PDF

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Publication number
EP0045697A1
EP0045697A1 EP19810401244 EP81401244A EP0045697A1 EP 0045697 A1 EP0045697 A1 EP 0045697A1 EP 19810401244 EP19810401244 EP 19810401244 EP 81401244 A EP81401244 A EP 81401244A EP 0045697 A1 EP0045697 A1 EP 0045697A1
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EP
European Patent Office
Prior art keywords
counterweight
arm
tube
arrangement according
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19810401244
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German (de)
French (fr)
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EP0045697B1 (en
Inventor
Eugène Le Devehat
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John Bean Technologies NV
FMC Technologies SAS
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FMC Europe NV
FMC Europe SA
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Publication of EP0045697A1 publication Critical patent/EP0045697A1/en
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Publication of EP0045697B1 publication Critical patent/EP0045697B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D9/00—Apparatus or devices for transferring liquids when loading or unloading ships
    • B67D9/02—Apparatus or devices for transferring liquids when loading or unloading ships using articulated pipes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/8807—Articulated or swinging flow conduit

Definitions

  • the invention relates to articulated arms for the transfer (loading or unloading of a ship for example) of fluid products, of the general type comprising a base, an internal tube and an external tube articulated together, and a counterweight system, the internal tube pivoting on the base, and the external tube carrying an elbow assembly and emergency disconnection device ,. part of this assembly remaining integral with the ship in emergency disconnection.
  • a problem encountered in this area is that of the difficulty of connecting the marine loading arms to the ship when they are unbalanced in normal operation. Another problem is that of the marine loading arms which, when they are over-balanced on the articulated assembly or under-balanced (the arm being in empty or full emergency disconnection) may tend to approach the ship with risk of shock. Another problem is that of the curve described by the end of the part of the elbow-emergency disconnection device assembly remaining integral with the external tube, when the internal tube rises, in particular in the case where the angle between the outer tube and the inner tube remains constant or varies very slowly.
  • Oil loading arms are known with two counterweights comprising a deformable parallelogram, one of the short sides of this parallelogram being in the extension of the external arm and the other small side being articulated on the base with a beam, the internal arm constituting the other large side parallel to the beam.
  • An arrow comprises a movable part and a fixed part.
  • This fixed part carries a movable balancing mass longitudinally and a mechanical transmission is established so as to link a movement, but in opposite directions, the mobile part of the boom and the balancing mass with respect to the fixed part. of this arrow.
  • the beam is associated with an attitude control system comprising a pair of pendulums and a pair of valves and sensor means attached to the beam to determine the attitude of the outer arm and acting on actuators of the inner arm and of beam swivel control.
  • an attitude control system comprising a pair of pendulums and a pair of valves and sensor means attached to the beam to determine the attitude of the outer arm and acting on actuators of the inner arm and of beam swivel control.
  • an oil loading arm comprising a balancing system designed so as to neutralize the vertical movement of the arm regardless of the position of the arm.
  • This system comprises a single counterweight guided so as to effect a vertical movement on a rod.
  • the counterweight is suspended by two cables.
  • the invention relates to a loading arm with two counterweights but without parallelogram and adopts an essentially hydraulic solution to make one of the counterweights mobile.
  • said overpressure is used to control the opening of a sequence valve, which opening triggers the hydraulic actuation of said mobile counterweight.
  • the invention also relates to a hydromechanical arrangement implementing the above method and, according to one embodiment of this arrangement, the hydraulically movable counterweight is a slider.
  • the hydraulically movable counterweight is mounted in a rocker.
  • the invention is applied to an articulated arm for transferring fluid products, in particular petroleum products, between a quay installation (Q) and a ship (N) for example .
  • the articulated arm comprises a base (1) and, pivotally mounted on this base, using two elbows (2) and (3) and two bearings (4) and (5), an internal tube (6) at one end of which is articulated an external tube (7).
  • a first pivoting takes place around a vertical axis Z-Z of the base and a second pivoting occurs around a horizontal axis X-X.
  • the outer tube (7) carries at its end an assembly (13) with elbows (14) and emergency disconnection device (15) for the connection with the ship. It should be noted that part of this assembly remains on the vessel during an emergency disconnection.
  • At least one counterweight (16) hydraulically movable is provided on the beam (8) for the rear extension of the internal tube (6) of the articulated arm.
  • the hydraulically movable counterweight (16) is produced in the form of a cursor capable of moving on slides (17) fixed by spacers (18) both on the elbow (3) of the internal tube (6 ) and on the beam (8).
  • the counterweight-cursor carries rollers (19) facilitating its movement on the slides (17). It is divided into two masses (16A) and (16B) connected by a plate (20) on which is articulated in (21) the rod (22) of a control cylinder (23) fixed on the internal tube (6) .
  • Another cylinder (28), whatever its location, allows the control of the external tube (7). Embodiments of the location of this external tube control device will be described later.
  • Pressing the cylinder (32) of the emergency disconnection device locks the cylinder of the external tube (7) in position. Locking is done using normal controls.
  • the external tube (7) is blocked by the pressurization of the jack (32) of the emergency disconnection device.
  • the normal commands allow the locking position to be set.
  • the flow regulator (R2) installed on the chamber (B) of the jack (24) of the internal tube (6) allows a fixed flow; therefore the pressure in this chamber is higher at the set pressure of the sequence valve (VS) which opens.
  • the pressurized oil coming from the chamber ( B ) controls the pilot valve (VP) which changes state (line P l) the oil flow passing through the regulator (R2) is directed towards the line (Pl).
  • This line also connected to the output of the sequence valve (VS) then feeds through a direction selector (SI) the chamber (B) of the jack (23) for controlling the mobile counterweight (16).
  • SI direction selector
  • the oil escapes from the chamber (B) to the tank through the solenoid valve (EVl).
  • the mobile counterweight (16) rises, the imbalance decreases as well as the pressure in the chamber (B) of the jack (24) of the internal tube (6).
  • the value of this pressure is lower than the setting of the sequence valve (VS) it closes, but the ascent of the internal tube continues slowly.
  • the piloted valve (VP) remains in the piloted position, the pressure coming from the chamber (B) of the jack is in communication with the piloting chamber (line Pl) through a flow limiter (L3); this line always feeds the ascent of the counterweight to an equilibrium position.
  • the change of state of the piloted valve (VP) is carried out automatically when the operator resumes control of the arm.
  • the pressure is applied to the chamber (A) of the jack (24) of the internal tube (raising of the arm) line (A) of the selector-valve (SV1) the oil under pressure controls the opening of a piloted valve (C P ) which drains the line (Pl) towards the reservoir (R) of the hydraulic power unit.
  • the valve pilot orifice (VP) is no longer under pressure; it returns to the normal operating position using its return spring.
  • the chamber (A) of the jack (24) of the internal tube is in communication with the reservoir of the hydraulic unit through the piloted valve ( VP ).
  • Calibrated valves (CT) installed between the chambers (A) and (B) of the cylinder (24) of the internal tube allow the intercommunication of these two chambers when the pressure reaches a value greater than that of the setting of these valves, in the event of a malfunction of the devices described above.
  • the curve (El) shows the movement of the end (O) of the outer tube (7) after disconnection, the position of said outer tube being blocked relative to the inner tube (6).
  • the curve (E2) shows the movement of the same end (O) of the external tube (7) after disconnection, the inclination of the external tube remaining constant relative to the vertical axis ZZ of the base, hence the clearance of the tube external to the ship.
  • the actuator (28) for controlling the external arm acts on a movable pulley (33) connected by a cable (34) to a pulley (35) fixed relative to the base.
  • the cylinder body (28) is mounted oscillating on the wheel (9). The detail of this mounting of the jack is shown in FIG. 8.
  • the body of the jack (28) is always mounted oscillating on the wheel (9) and the rod of this jack is connected by a yoke to the pivot (9A) of the wheel on which the pulley is fixed. (33).
  • the cylinder body (28) is mounted oscillating on the beam (8) while its rod is connected by a yoke to the pivot (9A).
  • two jacks (28) for controlling the external tube (7) are arranged on each of the strands of a cable (36) connecting a pulley (37) fixed to the external tube (7) and a pulley (38) attached to the base.
  • the body of the actuator (28) for controlling the external tube (7) is mounted oscillating on the base (1) while the end of its rod is articulated at (39) to a pulley (40) crazy climb on the base.
  • the pulley (40) is connected by a cable (41) to a pulley (42) fixed to the external tube.
  • the movable counterweight (16) is found to be rocked on the beam (8) of the rear extension of the internal tube (6) but it is always controlled, and in the same way, by the jack (23).
  • the counterweight (16) is mounted on a branch (43A) of a bent lever pivoting on the beam (8) around an axis (44), the other branch (43B) of the lever being also articulated to the rod of the control cylinder (23).
  • the counterweight (16) is shown in this figure in two different tilting positions corresponding substantially to the positions (Pl) and (P2) of the other embodiment.
  • the actuator (23) for controlling the movable counterweight-slider (16) can be fixed on the rear beam (8) instead of being fixed on the internal tube.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)

Abstract

L'invention se rapporte aux bras articulés de transfert de produits fluides, du type général comportant un tube interne (6) et un tube externe (7) articulés entre eux, et un système de contrepoids (10), le tube externe (7) portant un dispositif de déconnexion d'urgence (15). L'invention consiste à prévoir un contrepoids (16) mobile hydrauliquement sur le bras en déconnexion d'urgence, le bras étant plein, le contrepoids (10) suréquilibre le tube interne (6) qui remonte ; le bras étant vide, tout déséquilibre du tube interne (6) provoque une surpression dans le vérin de commande de ce tube (6) laquelle est utilisée pour commander l'actionnement hydraulique dudit contrepoids (10) mobile d'où rétablissement de l'équilibre. L'invention s'applique au chargement et au déchargement de produits fluides, en particulier de produits pétroliers.The invention relates to articulated arms for transferring fluid products, of the general type comprising an inner tube (6) and an outer tube (7) hinged together, and a counterweight system (10), the outer tube (7). carrying an emergency disconnection device (15). The invention consists in providing a counterweight (16) hydraulically movable on the arm in emergency disconnection, the arm being full, the counterweight (10) overbalances the internal tube (6) which rises; the arm being empty, any imbalance of the internal tube (6) causes an overpressure in the control jack of this tube (6) which is used to control the hydraulic actuation of said mobile counterweight (10) hence restoration of balance . The invention applies to the loading and unloading of fluid products, in particular petroleum products.

Description

L'invention se rapporte aux bras articulés de transfert (chargement ou déchargement d'un navire par exemple) de produits fluides, du type général comportant une embase, un tube interne et un tube externe articulés entre eux, et un système de contrepoids, le tube interne pivotant sur l'embase, et le tube externe portant un ensemble à coudes et dispositif de déconnexion d'urgence,. une partie de cet ensemble restant solidaire du navire en déconnexion d'urgence.The invention relates to articulated arms for the transfer (loading or unloading of a ship for example) of fluid products, of the general type comprising a base, an internal tube and an external tube articulated together, and a counterweight system, the internal tube pivoting on the base, and the external tube carrying an elbow assembly and emergency disconnection device ,. part of this assembly remaining integral with the ship in emergency disconnection.

Un problème rencontré dans ce domaine est celui de la difficulté de raccordement au navire des bras de chargement marins lorsqu'ils sont déséquilibrés en manoeuvre normale. Un autre problème est celui des bras de chargement marins qui, lorsqu'ils sont sur-équilibrés sur l'ensemble articulé ou sous-équilibrés (le bras étant en déconnexion d'urgence vide ou plein) peut avoir tendance à se rapprocher du navire avec des risques de chocs. Un autre problème est celui de la courbe décrite par l'extrémité de la partie de l'ensemble coudes-dispositif de déconnexion d'urgence restant solidaire du tube externe, lorsque le tube interne remonte, notamment dans le cas où l'angle entre le tube externe et le tube interne reste constant ou varie très lentement.A problem encountered in this area is that of the difficulty of connecting the marine loading arms to the ship when they are unbalanced in normal operation. Another problem is that of the marine loading arms which, when they are over-balanced on the articulated assembly or under-balanced (the arm being in empty or full emergency disconnection) may tend to approach the ship with risk of shock. Another problem is that of the curve described by the end of the part of the elbow-emergency disconnection device assembly remaining integral with the external tube, when the internal tube rises, in particular in the case where the angle between the outer tube and the inner tube remains constant or varies very slowly.

On connaît des bras de chargement pétrolier à deux contrepoids comprenant un parallélogramme déformable, l'un des petits côtés de ce parallélogramme étant dans le prolongement du bras externe et l'autre petit côté étant articulé sur l'embase avec une poutre, le bras interne constituant l'autre grand côté parallèle à la poutre.Oil loading arms are known with two counterweights comprising a deformable parallelogram, one of the short sides of this parallelogram being in the extension of the external arm and the other small side being articulated on the base with a beam, the internal arm constituting the other large side parallel to the beam.

On trouve généralement un contrepoids sur un prolongement de la poutre et un autre contrepoids sur un prolongement du tube interne ou sur un prolongement du petit côté du parallélogramme articulé à l'embase.There is generally a counterweight on an extension of the beam and another counterweight on an extension of the inner tube or on an extension of the short side of the parallelogram articulated to the base.

Il existe une interdépendance entre le pivotement du contrepoids de parallélogramme et le pivotement du tube externe et vice versa.There is an interdependence between the pivoting of the parallelogram counterweight and the pivoting of the outer tube and vice versa.

On connaît par ailleurs un bras de chargement dans lequel on ne trouve pas proprement dit un tube interne et un tube externe mais un ensemble de trois tubulures articulées, cet ensemble étant lui-même articulé à une manche verticale de remplissage et servant plus particulièrement au remplissage de wagons-citernes.There is also known a loading arm in which there is not properly speaking an internal tube and an external tube but a set of three articulated tubes, this assembly itself being articulated to a vertical filling sleeve and used more particularly for filling. of tank cars.

Une flèche comprend une partie mobile et une partie fixe. Cette partie fixe porte une masse d'équilibrage mobile longitudinalement et une transmission mécanique est établie de manière à lier un mouvement, mais en sens inverses, la partie mobile de la flèche et la masse d'équilibrage vis-à-vis de la partie fixe de cette flèche.An arrow comprises a movable part and a fixed part. This fixed part carries a movable balancing mass longitudinally and a mechanical transmission is established so as to link a movement, but in opposite directions, the mobile part of the boom and the balancing mass with respect to the fixed part. of this arrow.

Dans un autre bras de chargement connu, on trouve un contrepoids monté sur une poutre pivotant sur un prolongement arrière du bras interne.In another known loading arm, there is a counterweight mounted on a pivoting beam on a rear extension of the internal arm.

La poutre est associée à un système de contrôle d'attitude comportant une paire de pendules et une paire de soupapes et des moyens senseurs attachés à la poutre pour déterminer l'attitude du bras externe et agissant sur des vérins de commande du bras interne et de commande de pivotement de la poutre.The beam is associated with an attitude control system comprising a pair of pendulums and a pair of valves and sensor means attached to the beam to determine the attitude of the outer arm and acting on actuators of the inner arm and of beam swivel control.

On connaît enfin un bras de chargement pétrolier comportant un système d'équilibrage conçu de manière à neutraliser le débattement vertical du bras quelle que soit la position du bras. Ce système comporte un seul contrepoids guidé de manière à effectuer un mouvement vertical sur une tige. Le contrepoids est suspendu au moyen de deux câbles.Finally, an oil loading arm is known comprising a balancing system designed so as to neutralize the vertical movement of the arm regardless of the position of the arm. This system comprises a single counterweight guided so as to effect a vertical movement on a rod. The counterweight is suspended by two cables.

L'invention se rapporte à un bras de chargement à deux contrepoids mais sans parallélogramme et adopte une solution essentiellement hydraulique pour rendre mobile l'un des contrepoids.The invention relates to a loading arm with two counterweights but without parallelogram and adopts an essentially hydraulic solution to make one of the counterweights mobile.

La présente invention remédie aux problèmes exposés plus haut et vise un procédé permettant, notamment, le dégagement d'un bras articulé en déconnexion d'urgence, caractérisés en ce qu'il consiste :

  • - à prévoir un contrepoids mobile hydrauliquement sur le bras ;
  • - à faire varier la position de ce contrepoids suivant que l'on veut obtenir un équilibrage du bras vide ou un équilibrage du bras plein et suivant que le bras est en état de raccordement ou en état de déconnexion d'urgence ;
  • - en déconnexion d'urgence, le bras étant plein, le contrepoids sur-équilibrant légèrement le tube interne qui remonte ; le bras étant vide, tout déséquilibre important du tube interne provoquant une surpression dans le vérin de commande de ce tube ;
  • - à utiliser, dans ce cas, ladite surpression pour commander l'actionnement hydraulique dudit contrepoids mobile, d'où rétablissement de l'équilibre ;
  • - en raccordement, l'ouverture de la vanne du dispositif de déconnexion d'urgence commandant le déplacement dudit contrepoids mobile en position d'équilibrage plein.
The present invention overcomes the problems set out above and aims at a method allowing, in particular, the release of an articulated arm in emergency disconnection, characterized in that it consists:
  • - to provide a hydraulically movable counterweight on the arm;
  • - Varying the position of this counterweight depending on whether one wants to achieve a balancing of the empty arm or a balancing of the full arm and depending on whether the arm is in the connection state or in the emergency disconnection state;
  • - in emergency disconnection, the arm being full, the counterweight slightly overbalancing the internal tube which rises; the arm being empty, any significant imbalance of the internal tube causing an overpressure in the actuator of this tube;
  • - To use, in this case, said overpressure to control the hydraulic actuation of said mobile counterweight, hence restoring balance;
  • - in connection, the opening of the valve of the emergency disconnection device controlling the movement of said mobile counterweight in the full balancing position.

Conformément encore à ce procédé, ladite surpression est utilisée pour commander l'ouverture d'une vanne de séquence, laquelle ouverture déclenche l'actionnement hydraulique dudit contrepoids mobile.Still in accordance with this method, said overpressure is used to control the opening of a sequence valve, which opening triggers the hydraulic actuation of said mobile counterweight.

L'invention vise également un agencement hydromécanique mettant en oeuvre le procédé ci-dessus et, suivant une forme de réalisation de cet agencement, le contrepoids mobile hydrauliquement est un curseur.The invention also relates to a hydromechanical arrangement implementing the above method and, according to one embodiment of this arrangement, the hydraulically movable counterweight is a slider.

Suivant une autre forme de réalisation de cet agencement hydromécanique, le contrepoids mobile hydrauliquement est monté en bascule.According to another embodiment of this hydromechanical arrangement, the hydraulically movable counterweight is mounted in a rocker.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description qui va suivre faite en regard des dessins annexés sur lesquels :

  • - la figure 1 est une vue en élévation latérale d'une forme de réalisation possible d'un bras de transfert de produits fluides équipé conformément à l'invention ;
  • - la figure 2 est une vue en élévation latérale partielle et à plus grande échelle de cette forme de réalisation, le tube interne du bras articulé étant disposé à la verticale, parallèlement à l'embase ;
  • - la figure 3 est une vue semblable à la figure 2, mais à 90° par rapport à celle-ci ;
  • - la figure 4 est une vue en coupe suivant la ligne IV-IV de la figure 3, à plus grande échelle et montrant le contrepoids mobile hydrauliquement de cette même forme de réalisation, le contrepoids étant un curseur ;
  • - les figures 5 et 6 sont des schémas de la commande hydraulique ;
  • - les figures 7 à 11 sont des schémas montrant des emplacements différents du dispositif :de commande du tube externe du bras ; et
  • - la figure 12 est un schéma représentant une autre forme de réalisation du contrepoids mobile hydrauliquement, ce contrepoids étant alors monté en bascule.
Other characteristics and advantages of the present invention will emerge from the description which follows, given with reference to the appended drawings in which:
  • - Figure 1 is a side elevational view of a possible embodiment of a fluid transfer arm equipped in accordance with the invention;
  • - Figure 2 is a partial side elevational view on a larger scale of this embodiment, the inner tube of the articulated arm being disposed vertically, parallel to the base;
  • - Figure 3 is a view similar to Figure 2, but at 90 ° relative thereto;
  • - Figure 4 is a sectional view along line IV-IV of Figure 3, on a larger scale and showing the hydraulically movable counterweight of this same embodiment, the counterweight being a cursor;
  • - Figures 5 and 6 are diagrams of the hydraulic control;
  • - Figures 7 to 11 are diagrams showing different locations of the device: control of the outer tube of the arm; and
  • - Figure 12 is a diagram showing another embodiment of the hydraulically movable counterweight, this counterweight then being mounted in a rocker.

Dans la forme de réalisation représentée aux figures 1 à 4 en particulier, l'invention est appliquée à un bras articulé de transfert de produits fluides, notamment de produits pétroliers, entre une installation à quai (Q) et un navire (N) par exemple. Dans cette forme de réalisation choisie seulement à titre d'exemple pour illustrer l'application de l'invention, le bras articulé comprend une embase (1) et, monté à pivotement sur cette embase, à l'aide de deux coudes (2) et (3) et de deux roulements (4) et (5), un tube interne (6) à une extrémité duquel est articulé un tube externe (7). Selon cette disposition, un premier pivotement se fait autour d'un axe vertical Z-Z de l'embase et un second pivotement se produit autour d'un axe horizontal X-X. Sur une poutre (8) prolongeant, à l'arrière, le tube interne (6), on trouve la roue (9) du système de contrepoids (10) laquelle est reliée par un câble (11) à l'autre roue (12) du système. Le tube externe (7) porte à son extrémité un ensemble (13) à coudes (14) et dispositif de déconnexion d'urgence (15) pour la liaison avec le navire. Il doit être remarqué qu'une partie de cet ensemble demeure sur le navire lors d'une déconnexion d'urgence.In the embodiment shown in FIGS. 1 to 4 in particular, the invention is applied to an articulated arm for transferring fluid products, in particular petroleum products, between a quay installation (Q) and a ship (N) for example . In this embodiment chosen only by way of example to illustrate the application of the invention, the articulated arm comprises a base (1) and, pivotally mounted on this base, using two elbows (2) and (3) and two bearings (4) and (5), an internal tube (6) at one end of which is articulated an external tube (7). According to this arrangement, a first pivoting takes place around a vertical axis Z-Z of the base and a second pivoting occurs around a horizontal axis X-X. On a beam (8) extending, at the rear, the internal tube (6), there is the wheel (9) of the counterweight system (10) which is connected by a cable (11) to the other wheel (12 ) of the system. The outer tube (7) carries at its end an assembly (13) with elbows (14) and emergency disconnection device (15) for the connection with the ship. It should be noted that part of this assembly remains on the vessel during an emergency disconnection.

Conformément à l'invention et pour remédier aux problèmes exposés plus haut, au moins un contrepoids (16) mobile hydrauliquement est prévu sur la poutre (8) de prolongement arrière du tube interne(6) du bras articulé. Plus précisément, le contrepoids (16) mobile hydrauliquement est réalisé sous la forme d'un curseur susceptible de se déplacer sur des glissières (17) fixées par des entretoises (18) à la fois sur le coude (3) du tube interne (6) et sur la poutre (8). Le contrepoids-curseur porte des rouleaux (19) facilitant son déplacement sur les glissières (17). Il est réparti en deux masses (16A) et (16B) reliées par une plaque (20) sur laquelle est articulée en (21) la tige (22) d'un vérin de commande (23) fixé sur le tube interne (6).According to the invention and to remedy the problems set out above, at least one counterweight (16) hydraulically movable is provided on the beam (8) for the rear extension of the internal tube (6) of the articulated arm. More precisely, the hydraulically movable counterweight (16) is produced in the form of a cursor capable of moving on slides (17) fixed by spacers (18) both on the elbow (3) of the internal tube (6 ) and on the beam (8). The counterweight-cursor carries rollers (19) facilitating its movement on the slides (17). It is divided into two masses (16A) and (16B) connected by a plate (20) on which is articulated in (21) the rod (22) of a control cylinder (23) fixed on the internal tube (6) .

Un vérin (24) monté oscillant sur le tube interne (6) et dont le piston est relié à un câble (25) réunissant une poulie (26) fixée à l'embase et une poulie (27) montée folle sur le tube interne, constitue le dispositif de commande du tube interne.A jack (24) mounted oscillating on the internal tube (6) and the piston of which is connected to a cable (25) joining a pulley (26) fixed to the base and a pulley (27) mounted loosely on the internal tube, constitutes the control device of the internal tube.

Un autre vérin (28), quel que soit son emplacement, permet la commande du tube externe (7). Des formes de réalisation de l'emplacement de ce dispositif de commande du tube externe seront décrites plus loin.Another cylinder (28), whatever its location, allows the control of the external tube (7). Embodiments of the location of this external tube control device will be described later.

La description de la partie "hydraulique" de l'agencement hydromécanique selon l'invention va suivre en relation avec un exposé donné ci-après du fonctionnement général d'un bras articulé équipé conformément à ladite invention et en relation avec un exposé du fonctionnement hydraulique proprement dit.The description of the “hydraulic” part of the hydromechanical arrangement according to the invention will follow in relation to a description given below of the general operation of an articulated arm equipped in accordance with said invention and in relation to a presentation of the hydraulic operation well said.

Le fonctionnement général d'un bras articulé de transfert de fluides équipé selon l'invention est donc le suivant :

  • En marche normale, le bras est manoeuvré pour le raccordement, le contrepoids (16) étant en position "bras équilibré vide", position (Pl) figure 1. Un détecteur (29) autorise la manoeuvre. Après raccordement au navire, l'ouverture de la vanne (VI) de verrouillage hydraulique du dispositif de déconnexion d'urgence commande automatiquement le déplacement (flèche Fl) du contrepoids en position "bras équilibré plein", position (P2) figure 1. Un détecteur (30) du contrepoids dans cette position ou position de chargement, autorise alors l'ouverture de la vanne (31) du pied ou embase du bras.
  • En déconnexion d'urgence du bras plein le contrepoids (16) suréquilibre légèrement le tube interne (6) qui remonte.
The general operation of an articulated fluid transfer arm equipped according to the invention is therefore as follows:
  • In normal operation, the arm is maneuvered for connection, the counterweight (16) being in the "empty balanced arm" position, position (Pl) in figure 1. A detector (29) authorizes the maneuver. After connection to the vessel, the opening of the hydraulic locking valve (VI) of the emergency disconnection device automatically controls the movement (arrow Fl) of the counterweight in the "balanced balanced arm" position, position (P2) in Figure 1. A counterweight detector (30) in this loading position or position then authorizes the opening of the valve (31) of the foot or base of the arm.
  • In emergency disconnection of the full arm, the counterweight (16) slightly overbalances the internal tube (6) which rises.

La mise en pression du vérin (32) du dispositif de déconnexion d'urgence bloque en position le vérin du tube externe (7). La mise en position de verrouillage se fait à l'aide des commandes normales.Pressing the cylinder (32) of the emergency disconnection device locks the cylinder of the external tube (7) in position. Locking is done using normal controls.

En déconnexion d'urgence du bras vide, le contrepoids (16) étant en position "bras équilibré plein" (P2), le déséquilibre du tube interne (6) provoque une surpression dans le vérin (24) du tube interne, cette surpression commande l'ouverture d'une vanne de séquence (VS) et l'huile est dirigée dans le vérin (23) de commande de déplacement du contrepoids (16).In emergency disconnection of the empty arm, the counterweight (16) being in the "balanced full arm" position (P2), the imbalance of the internal tube (6) causes an overpressure in the cylinder (24) of the internal tube, this overpressure controls the opening of a sequence valve (VS) and the oil is directed into the cylinder (23) controlling the movement of the counterweight (16).

Par conséquent, au fur et à mesure du mouvement du tube interne, le contrepoids se déplace (flèche F2) jusqu'à ce que l'équilibre soit à nouveau rétabli.Consequently, as the inner tube moves, the counterweight moves (arrow F2) until equilibrium is again restored.

Le tube externe (7) est bloqué par la mise en pression du vérin (32) du dispositif de déconnexion d'urgence. Les commandes normales permettent la mise en position de verrouillage.The external tube (7) is blocked by the pressurization of the jack (32) of the emergency disconnection device. The normal commands allow the locking position to be set.

Le fonctionnement spécifiquement hydraulique est le suivant :

  • En service normal, le bras de chargement étant connecté au navire, l'opérateur ouvre la vanne (VI) de verrouillage du système de déconnexion. Le détecteur électrique (13A) agit automatiquement sur une électrovanne (EV1) qui met sous pression le vérin (23) de commande du contrepoids mobile (16) qui se déplace (flèche FI) en position "bras équilibré plein" (P2). Des limiteurs de débit (L1-L2) permettent le contrôle de la vitesse de déplacement du contrepoids et des clapets pilotés (C1-C2) permettent le blocage du vérin (23) en position fixe, en cas de rupture de canalisation hydraulique.
  • En déconnexion d"urgence, le bras étant plein, lorsque le bras est raccordé au navire le sélecteur-valve (SV1) permet la mise en intercommunication des deux chambres des vérins de commande du tube interne (ligne AB) et du tube externe ligne (CD).
  • En cas d'urgence, une électrovanne (EV2) est mise sous tension et le vérin (32) du dispositif de déconnexion d'urgence commande la déconnexion du bras, si la butée de contrôle de fermeture des vannes (FdC) est ouverte et si la vanne (V1) est en position déverrouillée (ouverte). Dans le même temps, une vanne de blocage (VB) est pilotée en position fermée. Le vérin (28) de commande du tube externe (7) est bloqué en position. Il doit être remarqué qu'en fonction de l'emplacement choisi pour ce vérin (28), le tube externe (7) est, soit bloqué par rapport au tube interne (6), soit bloqué par rapport à l'embase (1).
The specifically hydraulic operation is as follows:
  • In normal service, the loading arm being connected to the ship, the operator opens the valve (VI) for locking the disconnection system. The electric detector (13A) acts automatically on a solenoid valve (EV1) which pressurizes the actuator (23) for controlling the mobile counterweight (16) which moves (arrow FI) in the "balanced full arm" position (P2). Flow limiters (L1-L2) allow the speed of movement of the counterweight to be controlled and piloted valves (C1-C2) allow the cylinder (23) to be locked in the fixed position, in the event of hydraulic line failure.
  • In emergency disconnection, the arm being full, when the arm is connected to the ship the selector-valve (SV1) allows the interconnection of the two chambers of the control cylinders of the internal tube (line AB) and the external tube line ( CD).
  • In an emergency, a solenoid valve (EV2) is energized and the cylinder (32) of the emergency disconnection device controls the disconnection of the arm, if the valve closing control stop (FdC) is open and if the valve (V1) is in the unlocked (open) position. At the same time, a blocking valve (VB) is controlled in the closed position. The actuator (28) for controlling the external tube (7) is locked in position. It should be noted that depending on the location chosen for this cylinder (28), the outer tube (7) is either blocked relative to the inner tube (6), or blocked relative to the base (1) .

Le dispositif de déconnexion d'urgence étant ouvert, le tube interne (6), légèrement suréquilibré par le contrepoids mobile (16) remonte lentement, la vitesse étant contrôlée par un régulateur de débit (R2). La pression dans la chambre (B) du vérin (24) étant inférieure au tarage de la vanne de séquence (VS) celle-ci reste fermée et une valve pilotée (VP) ne change pas d'état, l'huile venant de la chambre (B) retourne à travers le sélecteur-valve (SV1) vers la chambre (A). La remontée du tube interne (6) s'arrête lorsque l'équilibre est atteint. (Tube interne près de la verticale).With the emergency disconnection device open, the internal tube (6), slightly overbalanced by the mobile counterweight (16) rises slowly, the speed being controlled by a flow regulator (R2). The pressure in the chamber (B) of the jack (24) being lower than the setting of the sequence valve (VS) the latter remains closed and a piloted valve (VP) does not change state, the oil coming from the chamber (B) returns through the selector valve (SV1) to chamber (A). The ascent of the inner tube (6) stops when equilibrium is reached. (Internal tube near the vertical).

En déconnexion d'urgence, le bras étant vide, aucun détecteur n'indiquant si le bras est vide ou plein, on considère que le contrepoids mobile (16) se trouve en position "bras équilibré plein" P2. Le dispositif de déconnexion d'urgence étant ouvert, le tube externe (7) se bloque comme précédemment.In emergency disconnection, the arm being empty, no detector indicating whether the arm is empty or full, it is considered that the mobile counterweight (16) is in the "balanced full arm" position P2. The emergency disconnection device being open, the external tube (7) locks as before.

Le déséquilibre, dans ce cas, est très important, le régulateur de débit (R2) installé sur la chambre (B) du vérin (24) du tube interne (6) permet un débit fixe ; par conséquent, la pression dans cette chambre est supérieure à la pression de tarage de la vanne de séquence (VS) qui s'ouvre. L'huile sous pression provenant de la chambre (B) pilote la valve pilotée (VP) qui change d'état (ligne Pl) le débit d'huile passant par le régulateur (R2) est dirigée vers la ligne (Pl). Cette ligne connectée également à la sortie de la valve de séquence (VS) alimente alors à travers un sélecteur de direction (SI) la chambre (B) du vérin (23) de commande du contrepoids mobile (16). L'huile s'échappe de la chambre (B) vers le réservoir à travers l'électrovalve (EVl).The imbalance, in this case, is very important, the flow regulator (R2) installed on the chamber (B) of the jack (24) of the internal tube (6) allows a fixed flow; therefore the pressure in this chamber is higher at the set pressure of the sequence valve (VS) which opens. The pressurized oil coming from the chamber ( B ) controls the pilot valve (VP) which changes state (line P l) the oil flow passing through the regulator (R2) is directed towards the line (Pl). This line also connected to the output of the sequence valve (VS) then feeds through a direction selector (SI) the chamber (B) of the jack (23) for controlling the mobile counterweight (16). The oil escapes from the chamber (B) to the tank through the solenoid valve (EVl).

Le contrepoids mobile (16) remonte, le déséquilibre diminue ainsi que la pression dans la chambre (B) du vérin (24) du tube interne (6). Lorsque la valeur de cette pression est inférieure au tarage de la valve de séquence (VS) elle se ferme, mais la remontée du tube interne se poursuit lentement. La valve pilotée (VP) reste en position pilotée, la pression provenant de la chambre (B) du vérin est en communication avec la chambre de pilotage (ligne Pl) à travers un limiteur de débit (L3) ; cette ligne alimente toujours la remontée du contrepoids jusqu'à une position d'équilibre.The mobile counterweight (16) rises, the imbalance decreases as well as the pressure in the chamber (B) of the jack (24) of the internal tube (6). When the value of this pressure is lower than the setting of the sequence valve (VS) it closes, but the ascent of the internal tube continues slowly. The piloted valve (VP) remains in the piloted position, the pressure coming from the chamber (B) of the jack is in communication with the piloting chamber (line Pl) through a flow limiter (L3); this line always feeds the ascent of the counterweight to an equilibrium position.

Le changement d'état de la valve pilotée (VP) est effectuée automatiquement lorsque l'opérateur reprend la commande du bras. En effet, lorsque la pression est appliquée sur la chambre (A) du vérin (24) du tube interne (remontée du bras) ligne (A) du sélecteur-valve (SV1) l'huile sous pression commande l'ouverture d'un clapet pilotée (CP) qui draine la ligne (Pl) vers le réservoir (R) de la centrale hydraulique. L'orifice de pilotage de la valve (VP) n'est plus sous pression ; elle revient en position de fonctionnement normale à l'aide de son ressort de rappel. Pendant la remontée du tube interne (6) la valve (VP) étant pilotée, la chambre (A) du vérin (24) du tube interne est en communication avec le réservoir de la centrale hydraulique à travers la valve pilotée (VP).The change of state of the piloted valve (VP) is carried out automatically when the operator resumes control of the arm. In fact, when the pressure is applied to the chamber (A) of the jack (24) of the internal tube (raising of the arm) line (A) of the selector-valve (SV1) the oil under pressure controls the opening of a piloted valve (C P ) which drains the line (Pl) towards the reservoir (R) of the hydraulic power unit. The valve pilot orifice (VP) is no longer under pressure; it returns to the normal operating position using its return spring. During the ascent of the internal tube (6), the valve (VP) being piloted, the chamber (A) of the jack (24) of the internal tube is in communication with the reservoir of the hydraulic unit through the piloted valve ( VP ).

Des clapets tarés (CT) installés entre les chambres (A) et (B) du vérin (24) du tube interne permettent l'intercommunication de ces deux chambres lorsque la pression atteint une valeur supérieure à celle du tarage de ces clapets, en cas de défaut de fonctionnement des appareils décrits ci-dessus.Calibrated valves (CT) installed between the chambers (A) and (B) of the cylinder (24) of the internal tube allow the intercommunication of these two chambers when the pressure reaches a value greater than that of the setting of these valves, in the event of a malfunction of the devices described above.

Sur la figure 7 ont été représentées deux courbes. La courbe (El) montre le débattement de l'extrémité (O) du tube externe (7) après déconnexion, la position dudit tube externe étant bloquée par rapport au tube interne (6). La courbe (E2) montre le débattement de la même extrémité (O) du tube externe (7) après déconnexion, l'inclinaison du tube externe restant constante par rapport l'axe vertical ZZ de l'embase d'où le dégagement du tube externe par rapport au navire. Pour ce faire, le vérin (28) de commande du bras externe agit sur une poulie mobile (33) reliée par un câble (34) à une poulie (35) fixe par rapport à l'embase. Le corps du vérin (28) est monté oscillant sur la roue (9). Le détail de ce montage du vérin est représenté à la figure 8.In Figure 7 two curves have been shown. The curve (El) shows the movement of the end (O) of the outer tube (7) after disconnection, the position of said outer tube being blocked relative to the inner tube (6). The curve (E2) shows the movement of the same end (O) of the external tube (7) after disconnection, the inclination of the external tube remaining constant relative to the vertical axis ZZ of the base, hence the clearance of the tube external to the ship. To do this, the actuator (28) for controlling the external arm acts on a movable pulley (33) connected by a cable (34) to a pulley (35) fixed relative to the base. The cylinder body (28) is mounted oscillating on the wheel (9). The detail of this mounting of the jack is shown in FIG. 8.

Dans la variante de la figure 9, le corps du vérin (28) est toujours monté oscillant sur la roue (9) et la tige de ce vérin est reliée par une chape au pivot (9A) de la roue sur lequel est fixée la poulie (33).In the variant of FIG. 9, the body of the jack (28) is always mounted oscillating on the wheel (9) and the rod of this jack is connected by a yoke to the pivot (9A) of the wheel on which the pulley is fixed. (33).

Dans la variante représentée aux figures 2 et 3, le corps du vérin (28) est monté oscillant sur la poutre (8) alors que sa tige est reliée par une chape au pivot (9A).In the variant shown in Figures 2 and 3, the cylinder body (28) is mounted oscillating on the beam (8) while its rod is connected by a yoke to the pivot (9A).

D'autres emplacements du vérin (28) sont prévus aux figures 10 et 11 des dessins, sans que ces choix d'emplacements soient limitatifs.Other locations of the jack (28) are provided in Figures 10 and 11 of the drawings, without these choices of locations being limiting.

Sur la figure 10, deux vérins (28) de commande du tube externe (7) sont disposés sur chacun des brins d'un câble (36) reliant une poulie (37) fixée au tube externe (7) et une poulie (38) fixée à l'embase.In FIG. 10, two jacks (28) for controlling the external tube (7) are arranged on each of the strands of a cable (36) connecting a pulley (37) fixed to the external tube (7) and a pulley (38) attached to the base.

Sur la figure 11, le corps du vérin (28) de commande du tube externe (7) est monté oscillant sur l'embase (1) alors que l'extrémité de sa tige est articulée en (39) à une poulie (40) montée folle sur l'embase. La poulie (40) est reliée par un câble (41) à une poulie (42) fixée au tube externe.In FIG. 11, the body of the actuator (28) for controlling the external tube (7) is mounted oscillating on the base (1) while the end of its rod is articulated at (39) to a pulley (40) crazy climb on the base. The pulley (40) is connected by a cable (41) to a pulley (42) fixed to the external tube.

Dans la forme de réalisation schématisée à la figure 12, le contrepoids mobile (16) se trouve être monté en bascule sur la poutre (8) de prolongement arrière du tube interne (6) mais il est toujours commandé, et de la même façon, par le vérin (23). Le contrepoids (16) est monté sur une branche (43A) d'un levier coudé pivotant sur la poutre (8) autour d'un axe (44), l'autre branche (43B) du levier étant par ailleurs articulée à la tige du vérin de commande (23). Le contrepoids (16) est représenté sur cette figure dans deux positions différentes de basculement correspondant sensiblement aux positions (Pl) et (P2) de l'autre forme de réalisation.In the embodiment shown diagrammatically in FIG. 12, the movable counterweight (16) is found to be rocked on the beam (8) of the rear extension of the internal tube (6) but it is always controlled, and in the same way, by the jack (23). The counterweight (16) is mounted on a branch (43A) of a bent lever pivoting on the beam (8) around an axis (44), the other branch (43B) of the lever being also articulated to the rod of the control cylinder (23). The counterweight (16) is shown in this figure in two different tilting positions corresponding substantially to the positions (Pl) and (P2) of the other embodiment.

Il est bien entendu que la présente invention n'a été décrite et représentée qu'à titre d'exemple préférentiel et que l'on pourra apporter des équivalences dans ses éléments constitutifs sans, pour autant, sortir du cadre de ladite invention qui est défini dans les revendications qui suivent.It is understood that the present invention has only been described and shown as a preferred example and that it is possible to provide equivalences in its constituent elements without, however, departing from the scope of said invention which is defined. in the claims which follow.

C'est ainsi que le vérin (23) de commande du contrepoids-curseur mobile (16) peut être fixé sur la poutre arrière (8) au lieu de se trouver fixé sur le tube interne.Thus the actuator (23) for controlling the movable counterweight-slider (16) can be fixed on the rear beam (8) instead of being fixed on the internal tube.

Claims (20)

1. Procédé permettant notamment le dégagement, en déconnextion d'urgence, qu'il soit plein ou vide et quelle que soit sa position, d'un bras articulé de transfert de produits fluides, du type général comportant une embase, un tube interne et un tube externe articulés entre eux, et un système de contrepoids à deux contrepoids, le tube interne pivotant sur l'embase et le tube externe portant un ensemble à coudes et dispositif de déconnexion d'urgence, caractérisé en ce qu'il consiste : - à prévoir un contrepoids (16) mobile hydrauliquement sur le bras ; - à faire varier la position de ce contrepoids suivant que l'on veut obtenir un équilibrage du bras vide ou un équilibrage du bras plein et suivant que le bras est en état de raccordement ou en état de déconnexion d'urgence ; - en déconnexion d'urgence, le bras étant plein, le contrepoids sur-équilibrant le tube interne qui remonte ; le bras étant vide tout déséquilibre important du tube interne provoquant une surpression dans le vérin de commande de ce tube ; - à utiliser, dans ce cas, ladite surpression pour commander l'actionnement hydraulique dudit contrepoids mobile, d'où rétablissement de l'équilibre ; - en raccordement, l'ouverture de la vanne (V1) du dispositif de déconnexion d'urgence commandant le déplacement dudit contrepoids mobile en position d'équilibrage plein. 1. A method allowing in particular the release, in emergency disconnection, whether full or empty and whatever its position, of an articulated arm for transferring fluid products, of the general type comprising a base, an internal tube and an outer tube articulated between them, and a counterweight system with two counterweights, the inner tube pivoting on the base and the outer tube carrying an elbow assembly and emergency disconnection device, characterized in that it consists: - Providing a counterweight (16) movable hydraulically on the arm; - Varying the position of this counterweight depending on whether one wants to obtain a balancing of the empty arm or a balancing of the full arm and depending on whether the arm is in connection state or in emergency disconnection state; - in emergency disconnection, the arm being full, the counterweight overbalancing the internal tube which rises; the arm being empty any significant imbalance of the internal tube causing an overpressure in the actuator of this tube; - To use, in this case, said overpressure to control the hydraulic actuation of said mobile counterweight, hence restoring balance; - in connection, the opening of the valve (V1) of the emergency disconnection device controlling the movement of said mobile counterweight in the full balancing position. 2. Procédé selon la revendication 1, caractérisé en ce qu'il consiste à utiliser ladite surpression pour commander l'ouverture d'une vanne de séquence (VS), laquelle ouverture déclenche l'actionnement hydraulique dudit contrepoids mobile.2. Method according to claim 1, characterized in that it consists in using said overpressure to control the opening of a sequence valve (VS), which opening triggers the hydraulic actuation of said mobile counterweight. 3. Agencement hydromécanique à deux contrepoids mettant en oeuvre le procédé exposé aux revendications 1 et 2, caractérisé en ce que le contrepoids (16) mobile hydrauliquement se déplace à l'arrière du tube interne (6) du bras articulé.3. Hydromechanical arrangement with two counterweights implementing the method set out in claims 1 and 2, characterized in that the counterweight (16) hydraulically movable moves behind the internal tube (6) of the articulated arm. 4. Agencement selon la revendication 3, caractérisé en ce que le contrepoids (16) mobile hydrauliquement est un curseur se déplaçant sur des glissières (17) disposées sur la poutre (8) de prolongement arrière du tube interne (6).4. Arrangement according to claim 3, characterized in that the counterweight (16) hydraulically movable is a slider moving on slides (17) disposed on the beam (8) of rear extension of the inner tube (6). 5. Agencement selon la revendication 3, caractérisé en ce que le contrepoids (16) mobile hydrauliquement est monté à bascule sur la poutre (8) de prolongement arrière du tube interne (6) du bras articulé.5. Arrangement according to claim 3, characterized in that the counterweight (16) hydraulically movable is pivotally mounted on the beam (8) rear extension of the inner tube (6) of the articulated arm. 6. Agencement selon l'une quelconque des revendications 3 à 5, caractérisé en ce qu'un vérin (23) sous la dépendance de ladite vanne de séquence (VS) provoque les déplacements du contrepoids mobile.6. Arrangement according to any one of claims 3 to 5, characterized in that a jack (23) under the dependence of said sequence valve (VS) causes the displacements of the mobile counterweight. 7. Agencement selon l'une quelconque des revendications 3 à 6, caractérisé en ce qu'un vérin (24) monté oscillant sur le tube interne (6) et dont le piston est relié à un câble (25) réunissant une poulie (26) fixée à l'embase et une poulie (27) montée folle sur le tube interne, constitue un dispositif de commande dudit tube interne.7. Arrangement according to any one of claims 3 to 6, characterized in that a jack (24) mounted oscillating on the internal tube (6) and whose piston is connected to a cable (25) joining a pulley (26 ) fixed to the base and a pulley (27) mounted loosely on the inner tube, constitutes a control device for said inner tube. 8. Agencement selon l'une quelconque des revendications 3 à 7, caractérisé en ce qu'un autre vérin (28), quel que soit son emplacement, permet la commande du tube externe.8. Arrangement according to any one of claims 3 to 7, characterized in that another cylinder (28), whatever its location, allows the control of the outer tube. 9. Agencement selon la revendication 8, caractérisé en ce que le corps du vérin (28) est monté oscillant sur la roue (9) du système classique de contrepoids (10) alors que sa tige est articulée à une poulie mobile (33) reliée par un câble (34) à une poulie (35) fixe par rapport à l'embase.9. Arrangement according to claim 8, characterized in that the cylinder body (28) is mounted oscillating on the wheel (9) of the conventional counterweight system (10) while its rod is articulated to a movable pulley (33) connected by a cable (34) to a pulley (35) fixed relative to the base. 10. Agencement selon la revendication 8, caractérisé en ce que le corps du vérin (28) est monté oscillant sur la poutre arrière (8) alors que sa tige est reliée par une chape au pivot (9A) de la roue (9) sur lequel est fixée la poulie (33).10. Arrangement according to claim 8, characterized in that the cylinder body (28) is mounted oscillating on the rear beam (8) while its rod is connected by a yoke to the pivot (9A) of the wheel (9) on which is fixed the pulley (33). 11. Agencement selon la revendication 8, caractérisé en ce que deux vérins (28) de commande du tube externe (7) sont disposés sur chacun des brins d'un câble (36) reliant une poulie (37) fixée au tube externe (7) et une poulie (38) fixée à l'embase.11. Arrangement according to claim 8, characterized in that two jacks (28) for controlling the external tube (7) are arranged on each of the strands of a cable (36) connecting a pulley (37) fixed to the external tube (7 ) and an pulley (38) fixed to the base. 12. Agencement selon la revendication 8, caractérisé en ce que le corps du vérin (28) de commande du tube externe (7) est monté oscillant sur l'embase (1) alors que l'extrémité de sa tige est articulée à une poulie (40) montée folle sur l'embase, ladite poulie (40) étant reliée par un câble (41) à une poulie (42) fixée au tube externe.12. Arrangement according to claim 8, characterized in that the body of the jack (28) for controlling the external tube (7) is mounted oscillating on the base (1) while the end of its rod is articulated to a pulley (40) mounted madly on the base, said pulley (40) being connected by a cable (41) to a pulley (42) fixed to the external tube. 13. Agencement selon l'une quelconque des revendications 3 à 12, caractérisé en ce qu'il comporte une centrale hydraulique, ladite vanne de séquence (VS) en relation avec lesdits vérins (23, 24, 28) et le vérin (32) du dispositif de déconnexion d'urgence, de sorte que le contrepoids (16) étant en position "bras équilibré plein" (P2) le déséquilibre du tube interne (6) provoque une surpression dans le vérin (24) du tube interne, cette surpression commandant l'ouverture de ladite vanne de séquence, d'où l'actionnement du vérin (23) de commande de déplacement du contrepoids (16).13. Arrangement according to any one of claims 3 to 12, characterized in that it comprises a hydraulic unit, said sequence valve (VS) in relation to said jacks (23, 24, 28) and the jack (32) of the emergency disconnection device, so that the counterweight (16) being in the "balanced full arm" position (P2) the imbalance of the internal tube (6) causes an overpressure in the jack (24) of the internal tube, this overpressure controlling the opening of said sequence valve, hence the actuation of the cylinder (23) for controlling movement of the counterweight (16). 14. Agencement selon la revendication 13, caractérisé en ce que ladite centrale hydraulique comprend, une électrovanne (EVl) mettant sous pression en service normal, le bras articulé étant connecté au point de chargement ou de déchargement (par exemple un navire), le vérin (23) de commande du contrepoids mobile (16) qui se déplace en position "bras équilibré plein "(P2), la vanne (VI) de verrouillage du système de déconnexion ayant été ouverte.14. Arrangement according to claim 13, characterized in that said hydraulic unit comprises, a solenoid valve (EVl) pressurizing in normal service, the articulated arm being connected to the loading or unloading point (for example a ship), the jack (23) for controlling the mobile counterweight (16) which moves to the "balanced balanced arm" position (P2), the valve (VI) for locking the disconnection system having been opened. 15. Agencement selon l'une quelconque des revendications 13 et 14, caractérisé en ce que des limiteurs de débit (Ll, L2) permettent le contrôle de la vitesse de déplacement du contrepoids mobile (16).15. Arrangement according to any one of claims 13 and 14, characterized in that flow limiters (L1, L2) allow the control of the speed of movement of the mobile counterweight (16). 16. Agencement selon l'une quelconque des revendications 13 à 15, caractérisé en ce que des clapets pilotés (Cl, C2) permettent le blocage en position fixe du vérin (23) de commande du contrepoids mobile, en cas de rupture de canalisation hydraulique.16. Arrangement according to any one of claims 13 to 15, characterized in that piloted valves (Cl, C2) allow the blocking in a fixed position of the jack (23) for controlling the mobile counterweight, in the event of a break in the hydraulic pipe. . 17. Agencement selon l'une quelconque des revendications 13 à 16, caractérisé en ce que la centrale hydraulique comprend un sélecteur-valve (SV1) permettant la mise en intercommunication des deux chambres des vérins de commande du tube interne et du tube externe, en déconnexion d'urgence, le bras étant plein et raccordé au navire.17. Arrangement according to any one of claims 13 to 16, characterized in that the hydraulic unit comprises a selector-valve (SV1) allowing the interconnection of the two chambers of the control cylinders of the inner tube and the outer tube, in emergency disconnection, the arm being full and connected to the ship. 18. Agencement selon l'une quelconque des revendications 13 à 17, caractérisé en ce que la centrale hydraulique comprend, en outre, une électrovanne (EV2) mise sous tension en cas d'urgence, afin que le vérin (32) du dispositif de déconnexion d'urgence commande la déconnexion du bras, le vérin de commande du tube externe comportant, également, une vanne de blocage (VB) permettant le blocage, en cas d'urgence, du vérin (28) de commande du tube externe (7) soit par rapport au tube interne (6), soit par rapport à l'embase (1).18. Arrangement according to any one of claims 13 to 17, characterized in that the hydraulic unit further comprises a solenoid valve (EV2) energized in an emergency, so that the cylinder (32) of the device emergency disconnection controls the disconnection of the arm, the control cylinder of the external tube also comprising a blocking valve (VB) allowing the blocking, in an emergency, of the cylinder (28) controlling the external tube (7 ) either relative to the internal tube (6), or relative to the base (1). 19. Agencement selon l'une quelconque des revendications 13 à 18, caractérisé en ce que le vérin de commande du tube interne comprend un régulateur de débit (R2) de contrôle de la vitesse de remontée du tube interne (6) et une vanne pilotée (VP) de sorte que, en déconnexion d'urgence, le bras étant plein, la pression dans l'une des chambres du vérin (24) étant inférieure au tarage de la vanne de séquence (VS) celle-ci reste fermée et la valve pilotée (VP) ne changeant pas d'état, l'huile venant de ladite chambre retourne à travers le sélecteur-valve (SV1) vers l'autre chambre du vérin (24).19. Arrangement according to any one of claims 13 to 18, characterized in that the control cylinder of the internal tube comprises a flow regulator (R2) for controlling the ascent rate of the internal tube (6) and a piloted valve (VP) so that, in emergency disconnection, the arm being full, the pressure in one of the chambers of the jack (24) being less than the setting of the sequence valve (VS) the latter remains closed and the piloted valve (VP) does not change state, the oil coming from said chamber returns through the selector-valve (SV1) to the other chamber of the jack (24). 20. Agencement selon la revendication 19, carac- térisé en ce qu'en déconnexion d'urgence, le bras étant vide, ledit régulateur de débit (R2) permet un débit fixe, de sorte que la pression dans la chambre considérée du vérin (24) est supérieure à la pression de tarage de la vanne de séquence (VS) qui s'ouvre, de sorte que la valve pilotée (VP) change d'état et qu'une des chambres du vérin (23) du contrepoids mobile (16) se trouve alimentée.20. An arrangement according to claim 19, charac- t er i s ed in that, in emergency disconnection, the arm being empty, said flow regulator (R2) provides a fixed rate, so that the pressure in the chamber considered of the cylinder (24) is greater than the setting pressure of the sequence valve (VS) which opens, so that the piloted valve (VP) changes state and that one of the chambers of the cylinder (23) the mobile counterweight (16) is supplied.
EP19810401244 1980-08-04 1981-07-31 Hydraulic apparatus permitting the disconnection of a fluid-transferring articulated arm, especially for an urgent disconnection Expired EP0045697B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8017184A FR2487807B1 (en) 1980-08-04 1980-08-04 HYDROMECHANICAL METHOD AND ARRANGEMENT FOR PARTICULARLY CLEARING AN ARTICULATED ARM FOR TRANSFERRING FLUID PRODUCTS, IN EMERGENCY DISCONNECTION
FR8017184 1980-08-04

Publications (2)

Publication Number Publication Date
EP0045697A1 true EP0045697A1 (en) 1982-02-10
EP0045697B1 EP0045697B1 (en) 1985-02-13

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EP19810401244 Expired EP0045697B1 (en) 1980-08-04 1981-07-31 Hydraulic apparatus permitting the disconnection of a fluid-transferring articulated arm, especially for an urgent disconnection

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US (1) US4416306A (en)
EP (1) EP0045697B1 (en)
DE (1) DE3168894D1 (en)
FR (1) FR2487807B1 (en)
SG (1) SG46185G (en)

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FR2572786A1 (en) * 1984-11-07 1986-05-09 Amri Emergency disconnecter for an arm for loading or unloading a fluid transport vehicle
FR2611687A1 (en) * 1987-03-06 1988-09-09 Pichon Sa Ets M Tank-filling hydraulic-control device
CN111099552A (en) * 2019-12-31 2020-05-05 连云港士君化工设备维修有限公司 Method for replacing horizontal slewing bearing or inner wall slewing bearing of wharf oil conveying arm

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US4645467A (en) * 1984-04-24 1987-02-24 Amtel, Inc. Detachable mooring and cargo transfer system
FR2625490B1 (en) * 1987-12-30 1990-08-31 Fmc Europe METHOD FOR EMERGENCY DISCONNECTION OF AN OIL FOR TRANSFERRING PETROLEUM PRODUCTS, AND ARM SUITABLE FOR IMPLEMENTING THIS PROCESS
FR2638731B1 (en) * 1988-11-09 1991-02-08 Fmc Europe METHOD FOR PROVIDING A DISCONNECTION BETWEEN A FLUID LOADING ARM AND A TANK, ONE OF WHICH IS CARRIED BY A VEHICLE IN THE EVENT OF AN UNEXPECTED DEPARTURE OF THE VEHICLE; FLUID LOADING ARM IMPLEMENTING THIS PROCESS; SAFETY DISCONNECTOR FOR ITS IMPLEMENTATION
US4898211A (en) * 1988-11-21 1990-02-06 Aeroquip Corporation Counterbalanced refueling arm assembly
US6692035B2 (en) 2001-08-17 2004-02-17 Bradford G. Baruh Device and method for coupling pipes
US6494493B1 (en) * 2001-08-17 2002-12-17 Bradford G. Baruh Device and method for coupling pipes
GB2424404B (en) 2005-03-21 2007-02-28 Bluewater Energy Services Bv Mooring apparatus with moveable ballast weight
FR2931451B1 (en) * 2008-05-22 2010-12-17 Fmc Technologies Sa CONTROL DEVICE FOR SYSTEM FOR LOADING AND / OR UNLOADING FLUIDS
FR2964093B1 (en) * 2010-09-01 2012-12-07 Fmc Technologies Sa LOADING ARM WITHOUT EMBASE
DE102012212916A1 (en) * 2012-07-24 2014-01-30 Putzmeister Engineering Gmbh Rotary distributor for thick materials
DE102012222084B4 (en) * 2012-12-03 2017-06-01 FR. LÜRSSEN WERFT GmbH & Co.KG Device for passing a fluid into a tank and a ship equipped with such a device
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CN111915718B (en) * 2020-06-22 2024-01-09 中国船舶集团有限公司第七一六研究所 Automatic docking system suitable for ship shore LNG loading and unloading arm

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FR2572786A1 (en) * 1984-11-07 1986-05-09 Amri Emergency disconnecter for an arm for loading or unloading a fluid transport vehicle
FR2611687A1 (en) * 1987-03-06 1988-09-09 Pichon Sa Ets M Tank-filling hydraulic-control device
CN111099552A (en) * 2019-12-31 2020-05-05 连云港士君化工设备维修有限公司 Method for replacing horizontal slewing bearing or inner wall slewing bearing of wharf oil conveying arm
CN111099552B (en) * 2019-12-31 2022-04-01 连云港士君化工设备维修有限公司 Method for replacing horizontal slewing bearing or inner wall slewing bearing of wharf oil conveying arm

Also Published As

Publication number Publication date
FR2487807B1 (en) 1985-11-15
SG46185G (en) 1987-03-27
FR2487807A1 (en) 1982-02-05
EP0045697B1 (en) 1985-02-13
DE3168894D1 (en) 1985-03-28
US4416306A (en) 1983-11-22

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