Device for setting and fixing on the seabed of the arctic platform


(57) Abstract:

The invention relates to the field of hydraulic engineering construction, in particular, to devices for setting and fixing the Arctic marine platforms. The inventive within the device containing piles, interacting with cyanomethylene based platform lifting mechanism, the base platform is supplied by a holder under piles and elevating mechanism mounted within the casing and consists of a head plate is u-shaped in plan, driven by hydraulic cylinders double-acting, hinged to the yoke. On the traverse from the top to the installed cargo butt, which zapasovany ropes cargo hoists, peremeshivayte by rail, located along the trajectory of the placement of piles. 2 C.p. f-crystals, 3 ill.

The invention relates to the production and retention of an offshore drilling platform and with the greatest effect can be used in Arctic conditions, when it is necessary to resist the advances of the ice fields.

To the means of production platforms are different in design support-lifting mechanisms, for example, in the form of Jack (see U.S. patent N 4053138, CL 254 105 from 1977, N 427051 CL 254 10tx2">

Using these mechanisms support columns, drilling platforms are installed with nadavlivanie in the ground floor, and if necessary, the relocation of platforms these mechanisms support columns are extracted from the bottom. As you can see, each nadavlivaya support column has its own mechanism, which transmits the necessary force on the column in the process of working with her.

As practice shows, the offshore platform with zadowolenie support columns (usually from 3 to 6 pieces) in Arctic conditions is unreliable. They cannot successfully resist moving ice fields.

To increase the reliability of fastening of the Arctic marine platform on the seabed, often resort to the use of additional piles. One example of such solution is described in the application France N 2499935, class B 63 B 35/44 from 1982. Here to improve the adhesion with the ground, in particular, the use of piles to be introduced in the bottom. The interaction of the platform with posts (piles) via the hydraulic device, individually mounted to each rack. However, as was shown above, such a design of the platform, even with the implement in the ground racks (piles), not preclude unreasonably (expensive) increases the number of supporting and lifting mechanisms. Grow the dimensions of the premises where it should be posted by these mechanisms.

In the application of UK N 1288663, class B 8 J (B 66 F 1/02) from 1972 described the design of support-lifting mechanism (Jack) to move barges decks relative to the racks. The hydraulic Jack is made in the form of a cylinder hinged to the deck, which allows you to have some degree of freedom (rolling in the vertical plane). However, as in the previously described constructions, the anchor-lifting mechanism is applied individually for each rack, with which it has a constant kinematic connection during the installation of platform for its removal from the point of drilling.

By the greatest number of matching signs this solution can be adopted for the prototype. The objective of this proposal is part of finding a solution, when one and the same reference-lifting mechanism can serve several racks (piles) alternately.

This object is achieved in a device for setting and fixing the Arctic marine platform containing the rack (piles), interacting with removable mounted on the base platform lifting mechanism made in the form of horseshoe cargo eyebolts are installed for hanging to talam, moving on to the monorail sweep placement of piles.

The task is achieved by the fact that the rack (piles) is placed in the holder, for example, a ring shape with a honeycomb form and amount of which are adequate to the cross section and the number of racks (piles).

This object is achieved in that the yoke is provided with elements temporarily fixing it on the rack (the pile), for example, in the form of zastrevaya devices with its own hydraulic drive.

In Fig. 1 shows a General view of the seat base platform of Fig. 2

section a-a of Fig. 1; Fig. 3 node 1 Fig. 1.

Device for setting and fixing the Arctic marine platform contains mounted on a submersible base 1 supports 2, 3, inside which is placed in the cell holder 4 pile 5, on the body of the cell holder installed removable lifting mechanism 6. This mechanism is made in the form of a u-shaped beam 6, the driven cylinders 8 double-acting hinge 9, fixed on the cell holder 4. On top of the traverse are cargo butt 10, which superovulate cargo hoist 11 moving on the rail 12. The pins 13 are provided with hydraulic cylinders 14.

Offer ustroitsa to the place of registration. This set of piles 5 is a comb clip 4.

Upon arrival to the place of setting the Foundation 1 ballustrade and falls to the bottom of the reservoir. In the process of transporting the lifting mechanism 6 of its horseshoe-shaped head plate 7 encompasses one (any) pile 5. As soon as the ground will reach the bottom, begins operation nadavlivanii piles into the ground. In traverse 7 posted by the pins 13 from the hydraulic actuator 14, which are included in the interaction with the corresponding holes in the pile. Such constructive interaction is widely known and therefore not described in detail. So, included hydraulic actuator pins 13, which are mentioned holes in the pile. Includes hydraulic cylinders 8, 9 are pivotally fixed to the holder 4. Is working stroke. This is then intercepted by pins 13 for the next series of holes that is done the next working stroke. And so up until the pile 5 will not be buried up to the design elevation. This is followed by disconnection of the cylinders 8 of the casing 4. Join Tali 11, which in the butt 10 lift mechanism and moving on rail 12, a transfer mechanism 6 to the next pile, which he easily put open u-shaped support beam 7. This design beam p is La its placement inside the supporting column 2. Described operation nadavlivanii piles 5, obviously, is with all the design number of piles 5. On completion of the works in the water area of the base 1 is preparing to move to another area. For this mechanism 6 is alternately removing piles of soil are also stepping interception of beam 7. This is done through the use of hydraulic cylinders 8 double action. Also consistently with details 11 mechanism 6 is transferred from the pile to the pile where near each hinge 9 is temporarily fixed to the holder 4. The holder 4 consists of a metal structure with peripheral equidistant from each other holes cells, in which, as in the conductor are placed piles 5. In these holes (on the walls) posted by simple clamps (not shown because of the wide popularity), through which the piles are kept from falling out during transport platform on the sea. After removing the last piles 5 mechanism 6 remains on it and will be enabled to push the pile already on arrival at the new location.

The described device is particularly effective in application for statement of Arctic drilling platform, which is its base 1 and piles 5 are held securely at the point of drilling and successfully resists shear and othenia on the seabed of the Arctic platform, containing piles, interacting with removable mounted on the platform of the lifting mechanism, wherein the base platform is supplied by a holder under piles and elevating mechanism mounted within the casing and consists of a head plate is u-shaped in plan, driven by hydraulic cylinders double acting, hinged to the housing and installed on top of the traverse cargo Obukhov, which zapasovany ropes cargo hoists, moving by rail, located along the trajectory of the placement of piles.

2. The device under item 1, characterized in that the ferrule is made from honeycombs to accommodate piles, and the shape and number of hundred correspond to the cross section and the number of piles.

3. The device under item 1, characterized in that the yoke is provided with elements temporarily fixing it on the pile, made with its own hydraulic drive.


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