Device for mooring vessels primarily to fixed offshore platform

 

(57) Abstract:

The invention relates to equipment for mooring boats. The device comprises a shaft pivotally mounted on the platform can be rotated in a vertical plane and in a working position protruding from the said platform above the water surface. Arrow provided with at least two stops interacting with the platform through the appropriate removable protective elements. As a safety elements are used, for example, mandrel semi-automatic device. The arrow made directing that with the possibility of vertical travel set cargo, made in the form provided fenders frame. The last made with the possibility of fixation in a given position relative to the boom. The boom is made of at least two tiers of platforms with ladders reporting platform with the platform. The device has associated with the movable frame trossoblochnoy system, the actuator is installed on the platform, means to rotate the platform and locking device of the arrows in the off position. Provides anchorage in melchorita ice when securing mooring astray, 2 Il.

The invention relates to equipment for mooring vessels and can be used as a device for mooring, located on the port, coastal or other still water the plants.

Expanding the search for and extraction of mineral resources in marine areas necessitates the creation of mooring devices, working in areas of moderately cold climate with the formation of the ice fields. In such operating conditions for mooring devices with the requirement to ensure the vessel is in melchorita ice is presented, in particular, the requirement to ensure the safety of mooring devices at extreme ice pile in front of the Wharf.

A known system for mooring vessels to the structure fixed to the seabed, containing movable device connecting the vessel with the said design (U.S. patent N 4611550, MKI4B 63 B 21/00, 1986). The known device comprises a rocker arm, movably connected with the vessel deck rotary elements, providing the ability to rotate the vessel separately from the movable connecting device.

A disadvantage of the known mooring device is chetna system for mooring vessels for U.S. patent N 4567843 (CL B 63 B 21/00, 1986), containing floating on the surface of the water tank with lever design, rotating around a horizontal axis. The lever design is attached to the upper end of the connecting device which is vertically upwards from the dead anchor. Relative to the coupling device lever design can vary, turning around a vertical axis.

The connecting device is subjected to tensile stress due to the floating body, seeking to hold this device in an upward position. The system contains several passes in different directions anchor chains attached to the connecting device. Chain, fixed on the bottom at a distance from the connection device, act on it with a force which is directed in the opposite direction from the direction of pull created floating body.

However, this mooring device, as discussed above, is not intended for operation in ice conditions.

The closest set of features with the claimed invention is the device according to U.S. patent N 4817552, class B 63 B 21/04, 1989, the Known device sovergnity water. The arrow connected with long flexible element passing down from arrows and ends below the surface of the water. Mentioned flexible element carrying the weight of which is under water. On the flexible element mounted remote for a specified distance cranes, vertically moving relative to the flexible element near the surface. Cranes equipped device, regulating its position along the flexible element. When the flexible element passes from the boom down in a straight line, cranes removed from the base of the platform at the same constant length. When moored vessel presses cranes to the pier, the area of the flexible element between the arrow and kranzer occupy an inclined position, and the weight tends to return the flexible element in a vertical position and to push the boat from the pier to which it is moored. In one of the embodiments of the mooring device is equipped with multiple flexible elements, and cranes contains elongated body, which is sent by means of these elements, while a single elongated cargo affects all of the flexible elements.

The known device, providing, in principle, the ship's melchorita ice, does not provide security Svetovrachane the position of the vessel relative to the pier, that reduces the security of the movement of people and goods with a moored ship and back at the wind and sea state.

The problem solved by the invention is to create a mooring device that provides anchorage in melchorita ice when securing mooring device when possible abnormal mooring vessels and in extreme accumulation of ice in front of the Wharf.

This task is solved in that the device for mooring vessels containing the arrow, mounted on the platform and protruding from the latter over the surface of the water, a long flexible element, one end through which the said bolt is connected with the platform and the other with the hanging weight, and at least one cranes associated with the flexible element, and mounted with a possibility of vertical travel, according to the invention provided with means to rotate the boom and device for fixing arrows in the off position. Boom hinged to the platform can be rotated in a vertical plane and provided with at least two stops interacting with the platform through the appropriate removable protective elements. The boom is made guides to the modern fenders. The arrow is made of at least two tiers of platforms with ladders reporting platform with the platform. The frame is made with the possibility of its fixation in a given position relative to the boom. The flexible member is a cable trossoblochnoy system providing vertical movement of the frame with grancem. Equipment mooring means for rotating arrows allows you to translate it into non-operating position and thereby eliminate the possibility of damaging the device under extreme accumulation of ice at the pier. Replaceable protective elements, the destruction which occurs when exceeding the design loads on the mooring device eliminates the possibility of damage to the latter in case of accidental overload, for example, in case of emergency mooring of the vessel. Vertical movement of the frame with grancem in the guide arrows, with the possibility of fixing in a predetermined position relative to the boom allows you to provide contact Krantz with the vessel when the potential changes in precipitation and water horizon. Equipment mooring platforms and ladders allows you to ensure the transition of people from the ship to the platform and back, on manisharma in the vertical plane.

Together with this mentioned trossoblochnoy system is a tool to rotate the boom. Thanks to this performance is the vertical movement of the frame with kranzer and turn arrows may be a single drive.

In addition, the device may be equipped with means for monitoring the condition of adjacent protective elements, each of which can be installed between the boom and the platform to the location of the replacement of the safety element. The availability of funds for monitoring a removable protective elements allows to make a decision on the replacement of these elements and, thereby, to enhance the reliability of the mooring device in the event of any emergency mooring of the vessel.

Also, the device may be provided with at least two mooring bollards installed at the site of one of these tiers sites. This ensures a fixed position of the vessel relative to the boom, allowing safe movement of people and goods with a moored ship and back at the wind and sea state.

The technical result of the use of the invention is that the farm is Tatnai mooring vessels and in extreme accumulation of ice in front of the Wharf. Thus, in comparison with the known mooring devices, allows a more secure movement of people and goods with a moored vessel to the pier and back in every possible horizon of water and any possible loading of the vessel.

In Fig. 1 schematically shows a General view of the proposed device for mooring vessels; Fig. 2 - a device for mooring a view in plan (trossoblochnoy system conventionally not shown).

Device for mooring vessels for fixed offshore platform contains an arrow 1, mounted by hinges 2 on the stationary platform 3 and in the working position, protruding from the platform above the water surface. In the embodiment of the invention, the boom 1 is equipped with two removable safety elements 4, interacting with the platform 3. As a safety elements are used, for example, mandrel semi-automatic device. On jutting out over the water the end of the boom 1 is made guides 5, in which the vertical moving frame installed with 6 fenders 7 in contact with the vessel 8. Frame with fenders, essentially, is a pneumatic device. As a shock absorber bumper device can be, and the dampers radial compression. For fixing the frame (breaker device in a given position relative to the boom 1, a device fixing frame, which is made, for example, in the form of a hinged lugs (not shown). To exclude effects of water and floating ice arrow 1 platform 3 is mounted in such a way that the elevation of the bottom of the boom is located below the highest level of water (sea level) frequency of occurrence of once in one hundred years, and mark the extreme lower position of the frame with fenders is located at a specified height above the lower horizon of the water by the frequency of occurrence of once in a hundred years.

Between the boom 1 and the platform 3 in the locations of the removable protective elements (domowych device) 4 is installed sensors 9 to monitor the status of these elements. In the embodiment of the invention the sensors 9 are displacement sensors that detect linear deformations in the safety elements by closing (opening) of the corresponding limit switch (not shown) that operate, for example, a sound or light signal, a warning about the necessity of departure of the vessel from the dock.

For people to move from the ship to platformance the invention, the bearing is made with three tiers of platforms, to account for the relatively greater vertical movement of moored vessel. Platform 14 of the middle tier are equipped with mooring bollards 16. Similar tables are installed on the platform 3 (in the drawing is shown).

On the platform 3 set bench 17, which is rigidly fixed to the actuator 18 trossoblochnoy system 19, which provides in an embodiment of the invention rotation of arm 1, and the vertical moving frame with fenders. The end of the rope 20 trossoblochnoy system is passed through a guide block 21 and is fixed to the bracket 22 of the frame 6.

For fixing the boom 1 outside (raised) position of the last executed elements gearing 23, interacting with elements of the gear 24 mounted on the platform 3. In the embodiment, the engagement element 23 is made in the form of a hook and the engagement element 24 in the form of a rolling pin. If necessary mooring device may be equipped with similar devices to secure the boom in position.

Fixed offshore platform to the side of each Board can be equipped with one, two or more such devices, allowing the mooring of vessels as stern and lag. In parentelementid, for example, by heating.

Device for mooring vessels for fixed offshore platform works as follows.

After separation of the elements 23, 24 of the bolt 1 turn under the action of its own weight through trossoblochnoy system 19 to contact domowych device 4 with reference sites (sides) of the platform 3. Depending on the sea level and precipitation vessel frame 6 with fenders 7 through trossoblochnoy system set the height so that the point of application of load from the naval vessel was located between spaced along the height of the shock absorbers pneumatic devices, and fix the position of the frame relative to the boom 1.

At the approach and mooring of the vessel 3 fenders 7 soften the blow of the vessel on the platform. If the load on the mooring device exceeds the calculated impact energy absorbed mandrel semi-automatic device 4. The vessel to the platform moor with the help of ropes and mooring bollards 16, located on floors 14 and on the platform 3.

If the accumulation of ice in front of the Wharf arrow 1 through trossoblochnoy system 19 is turned in the off position and fix with the help of the elements 23, 24.

Thus, thanks to Oso precipitation vessels and horizon water anchorage in melchorita ice stationary water facilities while ensuring the safety of mooring devices when possible abnormal mooring vessels and in extreme accumulation of ice in front of the Wharf.

1. Device for mooring vessels, mainly to fixed offshore platform, containing a shaft mounted on the platform and protruding from the latter over the surface of the water, a long flexible element, one end through which the said bolt is connected with the platform and the other with the hanging weight, and at least one cranes associated with the flexible element and mounted with possibility of vertical displacement, characterized in that it is provided with a means for rotating the shafts and the locking device of the arrows in the off position, and boom hinged to the platform can be rotated in a vertical plane and provided with at least two stops interacting with the platform through the appropriate removable protective elements, and the arrow made directing that with the possibility of vertical travel set cargo, made in the form of a frame, which is equipped with fenders, and the arrow made at least two tiers of platforms with ladders reporting platform with the platform, while the frame is made with the possibility of its fixation in a given position relative to the boom, and the flexible element is with the STW under item 1, characterized in that the said trossoblochnoy system is a tool to rotate the boom.

3. The device under item 1, characterized in that it is provided with a means for monitoring a replaceable protective elements, each of which is installed between the boom and the platform at the location of the corresponding safety element.

4. The device under item 1, characterized in that it is provided with at least two mooring tables set on the site of one of these tiers sites.

 

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4 cl, 16 dwg

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