Sea gravity platform

FIELD: transport.

SUBSTANCE: proposed platform comprises hull with main deck with crew quarters, process and general ship equipment, device to discharge oil products to tankers, copter deck and riser shaft at platform centre. Crew quarters have closed shape and is arranged equidistant to main deck outer outline. Process equipment is located so that it is limited by crew quarter inner fire- and explosion-proof wall. Crew and working quarters are arranged along crew quarters outer wall. Platform is equipped with canopy-shape coating located above the main deck and connected crew quarters and composed by separated trapezoid-shape flaps aligned with platform centre. Canopy base flaps rests on crew quarters inner wall. Riser pit height equals that of canopy top parts and terminates in bearing platform jointed by horizontal hinged with every flap of said canopy.

EFFECT: perfected performances by reducing the platform's gravity center, uniform weight distribution on the body of the platform from the residential unit and to protect the process equipment from the weather wave and wind effects.

5 cl, 4 dwg

 

The invention relates to the field of shipbuilding, and more particularly to marine technology platforms for different purposes, and can be used to create floating, submerged and stationary offshore platforms for the development of offshore oilfields and for improving the operational characteristics of the platform by lowering the center of gravity, uniform distribution of the weight load on the hull of the platform from the residential module and the protection of process equipment from Mitrofanovich effects.

Known ice floating platform Kulluk. the project CDU (Conical Drilling Unit), see PLM "Marine structures for the development of the Arctic shelf", str prototype. This platform contains the circular floating steel case, separated radial and axial bulkheads, combining the cylindrical and conical sections of the exterior height of the platform. The platform is equipped with a Central shaft connecting the bottom to the upper deck, to perform technological functions. On the upper deck there is technological and ship equipment, as well as the residential unit with a helipad.

This platform has a simple and rational (the circular) shape of the hull, which has been successfully used on platforms intended for operation in ice usloviyah the Arctic.

However, this platform also has disadvantages. The shortcoming of the platform is the large height of the housing module having a stacked layout. This arrangement leads to a higher center of gravity structures, reduces its stability requires taking additional ballast to level the platform on the water and causes difficulties when placing the actual residential premises in the residential module, since the area of the outer wall of the housing module, focused on external secure side of the platform, with the possibility of natural lighting in residential areas is not large enough. Another drawback is the placement process and ship equipment on the upper deck without a common shelter. When operating platform in Arctic conditions this causes additional energy costs for heating equipment and deck structures to prevent icing.

These defects substantially impair the performance characteristics of the platform.

Object of the present invention is to eliminate the above drawbacks, namely the improvement of the operational characteristics of the platform to improve its stability by lowering the center of gravity and uniform distribution of load on the platform from the residential module, and the e protection of deck structures, process and ship equipment from Mitrofanovich and weather when operating in Arctic conditions.

This is achieved by the fact that in the known technology platform that contains all the case with the main deck, installed on the main deck housing unit, process and ship equipment, unloading device for unloading tankers of petroleum products, helipad and mine risers located in the Central part of the platform according to the invention the residential unit has a closed form and is equidistant outer contour of the main deck. Meanwhile, the technological equipment is installed so that it is limited by the inner wall of the housing module, made of fire and blast-proof combat, and residential and office premises in the residential module are located along the outer wall of the housing module. The platform is fitted above the main deck and attached to the housing module of the platform drop-down controlled coating in the form of the dome of the individual valves in the form of a trapezoid, installed coaxially with the center of the platform, and the base of the dome shutters freely rests on the inner wall of the housing module. When this mine riser height is brought to the top of the dome and completed the reference area, which is a horizontal hinge is m connected with each leaf dome.

In addition, each leaf drop-down managed to cover the main deck around the perimeter equipped with a flexible seals with sealing dome in the closed position, and a lever mounted with an angular deviation upwards from the plane of the sash.

When this drop-down driven floor of the main deck is equipped with a lifting device made in the form of a rigidly fixed to the frame in the center of the platform telescopic rack with an integrated power cylinder, the upper movable part telescopic racks are connected with the levers of the valves by means of the rope through the blocks with the possibility of disconnection of the connection.

Along with this, the loading device for unloading tankers of petroleum products installed on the residential module supported on the casing with fire protection, made in the form of a portal and fixed to the main deck with inner and outer sides of the housing module.

In addition, a helipad is located on the residential module with bearings with inner and outer sides of the housing module in the form of portals that are installed on the main deck.

The implementation of the residential module of closed form and located equidistant outer contour of the main deck with the installation of the process equipment so that it is limited to internal, about ashenai to the center of the platform wall of the housing module, made of fire and blast-proof combat, provides by lowering the center of gravity of the platform and uniform distribution of load on the platform to increase the stability of the platform.

The location of residential and business premises in the residential module along the outer facing the waters of the wall of the housing module allows you to provide a comfortable environment for staff and security.

Equipment platform located above the main deck and attached to the housing module of the platform drop-down controlled coating in the form of the dome of the individual valves in the form of a trapezoid, installed coaxially with the center of the platform, allows you to isolate the equipment on the upper deck from the external environment to prevent spillage of liquids splashing, reduction of energy consumption for heating of process equipment and for heating the structures to prevent icing.

Bearing dome at the base of the leaves on the inner wall of the dwelling, and in the upper part of the mine risers, brought to the top of the dome, through the support platform flat hinge connected with each leaf dome, provides the possibility of disclosing the dome by raising shutters.

The supply of each leaf drop-down managed to cover the main deck along the perimeter of the elastic seal, with the possibility of what hermeticaly dome in the closed position, allows complete isolation, if necessary, the specified space from the external environment.

Supply drop-down managed to cover the main deck lifting device made in the form of rigidly fixed to the frame in the center of the platform telescopic rack with an integrated power cylinder, and a lever mounted on each wing, with angular deviation upwards from its plane, while the upper movable part telescopic racks are connected with the levers of the valves by means of the rope through the blocks with the possibility of disconnection of connections allows you to selectively control the opening (closing) of each leaf or group of shutters if necessary ventilation of the internal space, limited residential module and cupola, excess pressure to escape or discharge of cargo operations through the open dome.

Installation loading device for unloading tankers of petroleum products on the residential module supported on the casing with fire protection, made in the form of a portal and fixed to the main deck with inner and outer sides of the housing module, improves the operating characteristics of the platform by placing the inlet piping cargo system in a protected from weather conditions the space under the dome.

Set the helipad on the living module with bearings with inner and outer sides of the housing module in the form of portals, installed on the main deck, improves the operating characteristics of the platform by reducing the mass of the residential module by direct transfer of the load from the helipad on the top deck with full unloading of the residential module.

The essence of the invention is illustrated by drawings, where figure 1 shows a longitudinal section of the marine technology platform, figure 2 shows schematically the proposed marine technology platform in the plan. Figure 3 - cross section a-a in figure 2 and figure 4 - cross section B-B in figure 2.

Marine technology platform includes a housing 1 round shape in plan with concentric installed on the main deck 2 residential module 3 ring shape (figure 2). At the level of the main deck 2 and above its technological equipment 4 in the internal space, the housing module 3, the loading device 5 for unloading oil tankers and a helicopter landing pad 6. Mine riser 7 is installed in the Central part of the platform (figure 1). The platform is fitted above the main deck and attached to the housing module 3 platform drop-down controlled coating in the form of a dome 8 of the individual valves 9 in the form of a trapezoid with the levers 10, placed in a circle symmetrically to the vertical axis of the platform (Fig 1, 2).

Bottom base cover (dome) 8 OPI is moved on the inner wall of the housing module 3, and mine riser 7 height brought to the top of the dome 8 and provided with a supporting platform 11 at the top of the dome 8 (figure 1).

Fold 9 of the levers 10 drop-down managed cover (dome) 8 main deck in the upper part connected to the supporting platform 11 by a horizontal hinge 12 with one degree of freedom (figure 3), and equipped with a flexible perimeter seal 13 (Fig 3 and 4).

Drop-down controlled coating (dome) 8 main deck 2 is provided with a lifting device, comprising rigidly fixed to the frame 11 in the center of the platform the strut 14 (figure 1) with built-in power cylinder 15, the upper movable part 16 which is connected to the levers 10 of the valves 9 via ropes 17 through the blocks 18 with the possibility of disconnection of the connection.

The loading device 5 (Fig 1 and 2) for unloading tankers of petroleum products installed on the residential module 3 supported on the casing 19 of the U-shape, equipped with fire protection (not shown). The casing 19 is structurally related to the main deck 2 (based on main deck) with inner and outer sides of the housing module 3 (figure 1).

On the residential module 3 is a helipad 6 (figures 1 and 2), provided with supports from the external and internal sides of the housing module 3 in the form of portals 20 installed on the main deck 2. Thus, the helicopter is owned Playground 6 layout associated with the residential module 3, and structurally based on main deck 2 (figure 1).

The proposed marine technology platform works as follows.

When Mitrofanova impact on the proposed marine technology platform in operating conditions by lowering its center of gravity and residential module annular shape, decreases the amplitude of the inclinations during rolling, thereby increasing stability of the platform.

When operating in conditions of negative outside temperature of the space above the upper deck 2, limited to the lateral sides of the housing module 3 and the top - controllable coating 8 (in closed position), completely isolated from the external environment using flexible seal 13 (Fig 3 and 4)mounted on the perimeter of each leaf 9. In that space is supported by a positive temperature. This excludes snow drifts and ice internal structures and equipment. Selective opening (lifting) of the valves 9, if necessary, aeration or performing cargo operations is provided by removing the ropes on 17 separate valves 9, the rise of which is not planned.

The discharge of produced hydrocarbons to the tanker (not shown) is provided through the loading device 5, separated from the residential module 3 casing 18, performing the functions of the carrier and FR is sopoanai design.

Landing, takeoff and maintenance of the helicopter is provided a helicopter pad 6. All operational loads from the helipad, the equipment and the actual helicopter is transmitted to the main deck 2 directly through the portals 20, bypassing the residential module 3.

1. Marine technology platform that contains all the case with the main deck, with the attached residential module, process and ship equipment, unloading device for unloading tankers of petroleum products, a helipad and mine risers located in the Central part of the platform, wherein the housing unit has a closed form and is equidistant outer contour of the main deck, with technological equipment is installed so that it is limited by the inner wall of the housing module, made of fire and blast-proof combat, and residential and office premises in the residential module are located along the outer wall of the housing module, and the platform is equipped located above the main deck and attached to the housing module of the platform drop-down controlled coating in the form of the dome of the individual valves in the form of a trapezoid, installed coaxially with the center of the platform, with a dome at the base of the sash rests on the inner wall of the housing module, and mine risers on high is e brought to the top of the dome and completed the reference area, which horizontal hinge connected with each leaf dome.

2. Marine technology platform according to claim 1, characterized in that each leaf drop-down managed to cover the main deck around the perimeter equipped with a flexible seals with sealing dome in the closed position, and a lever mounted with an angular deviation upwards from the plane of the sash.

3. Marine technology platform according to any one of claims 1 and 2, characterized in that drop-down driven floor of the main deck is equipped with a lifting device made in the form of a rigidly fixed to the frame in the center of the platform telescopic rack with an integrated power cylinder, the upper movable part telescopic racks are connected with the levers of the valves by means of the rope through the blocks with the possibility of disconnection of the connection.

4. Marine technology platform according to claim 1, characterized in that the loading device for unloading tankers of petroleum products installed on the residential module supported on the casing with fire protection, made in the form of a portal and fixed to the main deck with inner and outer sides of the housing module.

5. Marine technology platform according to claim 1, characterized in that a helipad installed on the residential module supports the mi with outer and inner sides of the housing module in the form of portals, installed on the main deck.



 

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