EP2504519B1 - Device for securing pipes having various diameters - Google Patents

Description

The invention relates to apparatus for vertical mounting of pipes of different diameter for Elevatorsysteme for receiving, lifting and depositing a pipe string or individual pipe segments on oil platforms, consisting of a basic element to form a cylinder liner with a pivot joint for a connected door member to complete the socket wherein the pivot joint has a spaced-apart closure which has a pivotable locking with a closure pin and the closing movement is adjustable via an associated hydraulic actuating cylinder, wherein cylinder segments for forming the cylinder liner in different size diameters in the base element and door element arranged on the rear guide profiles interchangeable and the upper sides of the individual cylinder segments are connected via horizontally slidably associated retaining rings with corresponding receptacles, wherein by receiving tubes in the cylinder liner and occurring load a spring-loaded actuating arm via a cylinder segment in height adjustable and an associated load sensor a lock of the hydraulic adjusting cylinder for the closing movement is adjustable.

Embodiments of this type are known in various configurations, wherein the opening and closing takes place via a hydraulic control by adjusting cylinder. There is the shortcoming that the arrangements are designed only for a pipe size and the conversion of the cylinder liner is feasible on site with great effort. In this case, the viewpoint that an opening movement of the door element under load at different pipe sizes should not be feasible in practice of great importance.

In the EP 0589823 A1 a device for vertical support of pipes of different diameter is described.

Other fixtures are in the EP 1726774 A2 as well as the US 4647099 A described.

The object of the invention is to provide a simple convertible arrangement for different pipe diameters, which allows an adjustment on site and a Securing the bushing for mounting under load ensured.

The solution of this object is achieved according to the invention in that the guide profiles associated rails are arranged in the base element and door member and a cylinder segment in the base element has a protruding trigger bolt which controls the actuating cylinder for the closing movement after receiving tubes and that the trigger bolt on a spring is connected to a hollow piston cylinder, which holds the trigger bolt in a retracted position after activation of the actuating cylinder.

As a result, can be carried out by the individual cylinder segments in the present circumstances with relatively large diameters, conversions according to the pipe size used and a load-dependent locking.

For good fixation of the cylinder segments, it is provided that the cylinder segments in the lower part have additional retaining elements for corresponding reception in the base element and door element.

An advantageous embodiment is that three cylinder segments are arranged in the base element and two cylinder segments of the cylinder liner in the door element.

For automatic closure of the door element after insertion of pipes is provided that a cylinder segment in the base element has a protruding trigger bolt which controls the actuating cylinder for the closing movement after receiving tubes.

In a further embodiment and for the protection of an inserted trigger bolt is provided that the trigger bolt is connected via a spring with a hollow piston cylinder, which holds the trigger bolt in a retracted position after activation of the actuating cylinder.

Fig. 1

eine Draufsicht auf eine gebildete Zylinderbuchse im Grundelement und Türelement mit einem herausgezogenen Zylindersegment;

Fig. 2

eine Ansicht einer geöffneten Zylinderbuchse mit seinen Zylindersegmenten und einer Verbindung der Zylindersegmente im oberen Bereich über aufgeschobene Halteringe;

Fig. 3

einen Teilschnitt durch ein Grundelement mit eingesetztem Zylindersegment;

Fig. 4

eine unbelastete Zylinderbuchse mit zugeordnetem Lastsensor;

Fig. 5

eine Darstellung wie Fig. 4 mit belasteter Zylinderbuchse und angesteuertem Lastsensor;

Fig. 6 und 7

eine Zylinderbuchse im unbelasteten und belasteten Zustand mit einem federbelasteten Betätigungsarm für einen Lastsensor;

Fig. 8

eine Draufsicht zu Fig. 6 und 7;

Fig. 9 und 10

eine Ventilansteuerung eines Stellzylinders zum Verschliessen in geöffneter und geschlossener Position;

Fig. 11 und 12

eine Zuordnung eines Trigger-Bolzens im Grundelement zur Ventilansteuerung für eine Schließbewegung und als Außenansicht mit dem Ventil in geschlossener Anordnung;

Fig. 13

einen Schnitt durch ein Zylindersegment mit Trigger-Bolzen und

Fig. 14

eine Gesamtdarstellung der Vorrichtung in geschlossener Position der Zylinderbuchse

In the drawing, an embodiment of the invention is shown schematically. Show it:

Fig. 1

a plan view of an educated cylinder liner in the base member and door member with an extracted cylinder segment;

Fig. 2

a view of an open cylinder liner with its cylinder segments and a connection of the cylinder segments in the upper region via deferred retaining rings;

Fig. 3

a partial section through a base element with inserted cylinder segment;

Fig. 4

an unloaded cylinder liner with associated load sensor;

Fig. 5

a representation like Fig. 4 with loaded cylinder liner and controlled load sensor;

6 and 7

a cylinder liner in the unloaded and loaded state with a spring-loaded actuator arm for a load sensor;

Fig. 8

a plan view too 6 and 7 ;

FIGS. 9 and 10

a valve control of an actuating cylinder for closing in the open and closed position;

FIGS. 11 and 12

an assignment of a trigger bolt in the base element for valve control for a closing movement and as an external view with the valve in a closed arrangement;

Fig. 13

a section through a cylinder segment with trigger bolt and

Fig. 14

an overall view of the device in the closed position of the cylinder liner

The device consists essentially of a base member 1 with a pivotable about a hinge pin 2 door element 3, which is adjustable in the closed state via a closure element 4 on the base member 1 to form a cylinder liner 5 via a control cylinder 6.

The cylinder liner 5 is formed by individual cylinder segments 7, which are interchangeably fixed to the base element 1 and door element 3. For this purpose, the cylinder segments 7 are connected to the rear guide profiles 8, which are inserted and held in associated rails 9.

In the upper area, the cylinder segments 7 are connected via horizontally slidable retaining rings 10 with a corresponding receptacle 21 for the cylinder segments 9.

In this embodiment, a cylinder segment 7 is connected to a spring-loaded actuating arm 11 and acts when inserted tube and thus occurring load on a load sensor 12, which performs a locking of the actuating cylinder 6 when the device is closed. The load sensor 12 is an internal lock in the hydraulic control of the actuator cylinder 6, which connects an opening of the cylinder liner 5 and release of a load. An operator thus receives a signal as soon as the load sensor 12 has been actuated and thus the elevator is under load.

The hydraulic actuating cylinder 6 allows opening or closing of the door element 3. The door element 3 can be opened by 90 ° in order to accommodate pipes. In the closed position, the door element 3 rests on the base element 1. As soon as the door element 3 is closed, a hydraulic lock cylinder 22 is automatically actuated by a hydraulic control with a valve 23. The shutter cylinder 22 is connected to a shutter 13 with a locking pin 14, thereby causing a closing. The door member 3 is held by this shutter 13 with locking bolt 14 in the closed position and connected to the base member 1. An additional lock prevents unintentional opening of the closure, should it come to a failure of the hydraulic or to a line break.

In this embodiment, three cylinder segments 7 in the base element 1 and two cylinder segments 7 are arranged on the door element 3. Here, the cylinder segments 7 are connected at the bottom via additional holding elements 15 and corresponding receptacles 16 positively for additional guidance and assurance. The formation of individual cylinder segments 7 to form the cylinder liner 5, a reduction in weight and it reduces the times when changing to a different pipe diameter.

For automatically closing the door element 3 after receiving a tube in the open cylinder liner 5, a trigger pin 17 in the middle cylinder segment 7 of the base element 1 is arranged. At the height of the trigger pin 17 is a hydraulic hollow piston cylinder 18 which is connected by a main body with the trigger pin 17. When receiving a tube, the tube strikes against the trigger pin 17. The trigger pin 17 strikes a cylinder rod 19 of the hollow piston cylinder 18, pushes them through the hollow piston cylinder 18 against a spring 24 and actuates a trigger valve 20 which activates the hollow piston cylinder 18. The hollow piston cylinder 18 moves the cylinder rod 19 and thus removes the trigger pin 17 from the inserted tube. By the retraction of the hollow piston cylinder 18 wear on the trigger pin 17 is avoided, which would otherwise constantly abut the pipe. In addition, an automatic closing and locking of the door element 3 is caused by the actuation of the trigger valve 20 due to the hydraulic control.

Claims (3)

1. Device for vertically securing pipes having various diameters for elevator systems for receiving, lifting and depositing a pipe string or individual pipe segments on oil platforms, said device consisting of a base element for forming a cylindrical bush with a swivel joint for a connected door element for completing the bush, wherein said swivel joint has a fastener which is arranged in a spaced-apart manner and which possesses a swivellable locking arrangement with a fastening bolt, and the closing movement can be set via an associated hydraulic positioning cylinder, wherein cylindrical segments (7) for forming the cylindrical bush (5) in diameters of various sizes are arranged in an interchangeable manner in the base element (1) and door element (3) via guide profiles (8) on the reverse side, and the upper sides of the individual cylindrical segments (7) are connected, via securing rings (10) which are associated in a manner capable of being pushed on horizontally, to corresponding receptacles (21), and wherein, as a result of the reception of pipes in the cylindrical bush (5) and the loading that occurs, a spring-loaded actuating arm (11) is adjustable in its height via a cylindrical segment (7) and interlocking of the hydraulic positioning cylinder (6) can be set, via an associated load sensor (12), for the closing movement, characterised in that profile rails (9) associated with the guide profiles are arranged in the base element (1) and door element, that a cylindrical segment (7) in the base element has a protruding trigger-bolt (17) which controls the positioning cylinder (6) for the closing movement after pipes have been received, and that said trigger-bolt (17) is connected, via a spring (24), to a hollow-piston cylinder (18) which keeps said trigger-bolt (17) in a retracted position after activation of the positioning cylinder (6).
2. Device according to claim 1, characterised in that the cylindrical segments (7) have, in the lower part, holding elements (15) for corresponding reception in the base element (1) and door element (3).
3. Device according to Claim 1 or 2, characterised in that three cylindrical segments (7) are arranged in the base element (1), and two cylindrical segments (7) of the cylindrical bush (5) are arranged in the door element (3).

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