Drill ship

 

(57) Abstract:

The drilling vessel is designed to work in freezing seas with sea depth H. It contains a frame rotatably mounted relative to it bearing slewing rings attached to the bottom by an anchor system. Bearing slewing ring is equipped with a chain boxes. The anchor system includes an anchor chain attached to one end of the chain boxes, anchor mechanisms and guiding elements mounted on the rotary ring. Length L1anchor chains is greater than the length L of the anchor chains, sufficient to secure the vessel at a depth H in place of mooring, at a value not less than the depths of the sea N. We can widen the operational capabilities of the drilling vessel. 1 Il.

The invention relates to shipbuilding, in particular, to the design of the drilling vessel or other floating structures, held in place with anchor chains.

Known drill ships and floating structures in the body which provide bearing slewing ring is held at a given point on the sea surface using a flexible anchor links (chains or ropes attached to the hull of the vessel, depending on the direction of action of external loads has the ability like a weather vane to rotate around bearing slewing ring in the horizontal plane.

It is also known drilling vessel (see ed.St. USSR N 1588632, class B 63 B 35/14, which is the prototype), comprising a housing made rotatably mounted relative to it bearing slewing rings attached to the bottom of the through anchor system.

Hold bearing slewing rings at a given point by using the anchor chains are pre-stretched using the anchor mechanisms (winches), installed in the hull. When this stretched winches and anchor chain are fixed on the rotary ring and detached from the chains stored in the chain boxes in the hull of the vessel, thereby providing the ability to rotate the hull around the bearing slewing rings.

The disadvantage of the prototype is that when operating a vessel in the freezing seas it can be broken with anchors or even crushed a powerful ice or a single large block of ice (iceberg).

The technical result of the claimed invention is the enhanced operational capabilities of the drilling vessel for operation in freezing seas by the rapid departure of the vessel from the point of drilling to avoid collision with separately plavuse the depth of the sea H, containing enclosure rotatably mounted relative to it bearing slewing rings attached along the bottom by an anchor system that bearing slewing ring is equipped with a chain drawers, and the anchor system includes an anchor chain attached to one end of the chain boxes, and interact with the anchor mechanisms and guiding elements mounted on the rotary ring, and the length L1anchor chains is greater than the length L of the anchor chains, sufficient to secure the vessel at a depth H in place of mooring, at a value not less than the depths of the sea H.

The drawing shows the inventive drilling vessel for operation in freezing seas in the working position, the section along the median plane.

Drilling vessel for operation in freezing seas with sea depth H includes a housing 1, made with the possibility of rotation relative to the support-rotating ring 2 that is installed in the housing 1 by bearings 3 and secured to the bottom by an anchor system. In case 4 bearing slewing ring 2 mounted chain 5 boxes with anchor chains 6 anchor system length L1which is greater than the length L of the chain 6, is sufficient to sacor is in itself installed on the upper deck bearing slewing rings 2 anchor mechanisms 7, and on the outer cylindrical surface of ring 2 in its lower part - guiding elements in the form of a rotary chain sprockets 8. Anchor chain 6, one end of the fixed chain in boxes 5 through anchor mechanisms 7, clusive pipe 9 and the sprocket 8 is conducted to the anchors 10, fixed to the seabed.

After fixing anchor chains 6 to the anchor 10 on the seabed and the tension anchor chains 6 anchor mechanisms vessel 7 is moved into position, being able to turn in a horizontal plane relative to the anchored support-rotating ring 2 depending on the direction of the external load (including ice fields of a certain power). In the case of a threat to drift in the direction of the drilling powerful ice fields separately or large floating ice (iceberg) a vessel regardless of the position of its body 1 relative to the ring 2 by means of etching or choosing anchor chains 6 are shifted up (goes) away from the intended trajectory of drift ice (iceberg), and after the passage of the ice (iceberg) above the point of drilling similarly returns to the point of drilling and installed in working position. Thereby significantly decreasing patio displacement of the ship from the point of drilling is determined by the dimensions of the floating ice or iceberg. With a certain degree of reliability is known that the linear size of the iceberg is not greater than the depths at which drifting iceberg (see Asikainen A. N., Chumakov K. N. "ABC ice navigation". -M.: Transport, 1987, S. 45).

Thus, to avoid collision with a drifting iceberg enough to provide for the displacement of the drilling vessel from the point of drilling for a distance not less than the water depth H at the point of drilling.

In this regard, bearing slewing ring 2 of the inventive drilling vessel fitted with chain 5 drawers with anchor chains 6 length L1that exceeds required for mooring the vessel length L anchor chain 6 by a value not less than the depth of water H in the place of mooring.

Drilling vessel for operation in freezing seas with sea depth N containing the enclosure rotatably mounted relative to it bearing slewing rings attached to the bottom of the through anchor system, characterized in that the bearing slewing ring is equipped with a chain drawers, and the anchor system includes an anchor chain attached to one end of the chain boxes, and interact with the anchor mechanisms and guiding elements, to ascertain what know to secure the vessel at a depth H in place of mooring, on the value not less than the depths of the sea N.

 

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FIELD: shipbuilding; manufacture of mobile research complexes.

SUBSTANCE: proposed complex is made in form of ship with small waterplane area having upper and lower hulls interconnected by means of telescopic columns for disconnection and autonomous motion of these hulls. Lower hull is submersible vehicle and upper hull is amphibian. Both hulls are provided with greenhouses and power units for generation of energy for motion of complex, domestic and technological purposes, as well as for growing vegetables, sea products and production of distilling water by motion of spheres with plant containers located spirally on their surfaces, thus ensuring generation of electric power. In addition to vegetation tubes with plants growing chains are provided where sea products are contained for distilling sea water by change in pressure and level of illumination and growing chains for growing fish and preparation of nutrient solution for plants. Lower hull is provided with plankton trawls for delivery of plankton for greenhouse and power plants of lower and upper hulls for growing fish and sea products. Amphibian supplies fresh air to submersible vehicle through its collector; it is also used for transportation of sections for erection of scientific research station. Provision is made for delivery of light to submersible vehicle through lenses, light conduits and structural sections and light conduits of collector of vehicle.

EFFECT: environment control.

4 cl, 22 dwg

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