The reference column self-elevating floating platform with a removable shoe and method of connection is referred to reference columns with shoe

 

(57) Abstract:

The invention is intended for use in self-elevating floating platforms for exploration and mining. In the reference column floating platform extremity of the column and the hole in the Shoe is made with spherical surfaces, and each connection node of the column with the Shoe is made in the form of thrust with a hole and a longitudinal groove and covering cravings double vertical Obukhov, placed at the tip of the column, which rod is connected by a groove by the stopper, and on the Shoe. The connection of the support columns, with a removable Shoe Shoe hung on the ropes installed on the portal platform hoists, which connect with the off Shoe at the side of the platform is fixed in its double vertical rods eyebolts are installed. Then lower a little below the bottom of the platform column, using the trip mechanism take the stopper out of the holes Obukhov. Then raise the Shoe to the tip of the column, then down the column until the level of the brakes, get the stopper out of the guide into the hole Obukhov on the column and the notch on the rods and hang a Shoe rods on the brakes on the column, after which the ropes disconnect the column and reducing trademate and operating costs in the way of its connection with the Shoe, and improved security. 2 C. p. F.-ly, 7 Il.

The invention relates to the field of self-elevating floating platform (SPP) for exploration and production of mineral resources on the continental shelf seas, as well as for the construction of hydraulic structures.

A known construction of the support column with a removable Shoe (tip).with. N 1076522, M. CL.4E 02 B 17/02, 1982

The disadvantage of this columns is the need to manufacture new shoes after each installation of the columns on the ground.

The known reference a column with a removable Shoe and.with. N 1393877, M. CL. E 02 B 17/02, 1986, self-elevating floating platform, which includes the nodes connecting it with the Shoe, and the connecting elements (pull) of the Shoe to the post - prototype device.

The nodes connecting the Shoe with a column made in the form of blocks moving in the U-shaped guide plates mounted on the Shoe, and interacting in connection with a column with a circular flange that is welded at its tip. When this Shoe for centering it on the column is made with a hole.

The elements connecting the Shoe to the column is made in the form of slings, basic and advanced.

The known method Winnie to the mounting shoes orderly stack on the bottom. Then put over them self-elevating floating platform, lower the column and connect them with primary and secondary straps with pads. If this column does pulling-lifting operations to ensure contact of the stoppers with the annular flange on the column. After connecting the Shoe with the column lines are disconnected and removed to the top with a crane.

In the description of the invention the floating crane not directly mentioned, but the method of installation of the floating crane is the most cost effective means for the orderly controlled lowering of boots on the ground at the bottom of the sea. If you are just flooding the shoes, fill their ballast, the flooding of the shoes is unmanaged, and the Shoe can stand up squarely to the bottom or to turn upside down.

For controlled flooding is necessary to equip the shoes controlled ballast system that it is difficult for working in the operating conditions in the soil of the Shoe.

The disadvantage of known construction is of metal and large operating costs.

Significant metal structure due to the fact that the main load-carrying elements in Lavoy flange and work and pass on to other elements of the connection node (guides, plate), the Shoe and the lower end of the column Flexural load. In addition, a significant intensity of known construction is caused by the fact that the nodes connections provide rigid fastening of the Shoe on the column, whereby when getting under the edge of the Shoe when it is sadasivuni in soil solids in the column affected by additional bending load, the understanding of which requires additional metal.

In an additional metal structure will include slings, primary and secondary.

The disadvantage of this method of connection of the column with the Shoe is its considerable complexity and requires considerable operating costs of its implementation.

In addition, this method is unsafe. The considerable complexity of the method is caused by the need to connect to the column and to the Shoe, and detach from them in a submerged position the primary and secondary lines.

Significant operating costs of the method are the need to have to implement floating crane.

Insecurity method lies in the fact that hanging on the main slings the tip of the Shoe should od the HT column will not stop it's very difficult to guarantee, as the operation is performed under water, where a different perception of the environment than in air, the main lines under the influence of force from the lifting mechanism, lowering the column will break, and the Shoe will fall to the bottom.

The technical result of the claimed group of inventions is the reduction of metal structures supporting columns and reducing the complexity and operational costs in the way of its connection with the Shoe, and improved security.

This is achieved in the reference column self-elevating floating platform equipped with portals, removable Shoe made with a Central hole communicating with adequately performed by the surface of the tip of the column that contains the nodes connection with the Shoe, including the stoppers with the guides and clamps, and the elements connecting the Shoe to the fact that the extremity of the column and the hole in the Shoe provided with spherical surfaces, and each connection node of the column with the Shoe is made in the form of thrust, provided with a hole and a longitudinal groove, and covering her double vertical Obukhov, placed at the tip of the column, which rod is connected by a groove in pany in the form of a circular axis, equipped with square holes in the diameter of the axis, with the guide stopper is formed by horizontal reinforcing, vertical eyebolts are installed ribs, placed on both sides of the holes in them;

the nodes connecting the shoes to the column is made in the form prescribed in the portal winches, ropes which held in the opening of the portal, and focused on the eyebolts are installed on the column.

The specified technical result is achieved by the connection of the mentioned columns with the Shoe, which consists in priceplan Shoe, the manipulation of the column through the trip mechanism platform that flooded Shoe hung on the ropes installed on the portal platform hoists, which connect with swartout Shoe at the side of the platform is fixed in its double vertical rods eyebolts are installed, lower a little below the bottom of the platform column with trip mechanism, remove the stoppers from the holes Obukhov, and then presses the Shoe to the tip of the column, then down the column to the height of the stoppers near the middle of the longitudinal groove of the rod, get the stopper out of the guides into the holes Obukhov on the column and the notch on the rods and hang a Shoe rods on by the drawings, where

in Fig. 1 shows the supporting column self-elevating floating platform Shoe;

in Fig. 2 is a view along arrow a in Fig.1;

in Fig. 3 - section b-B of Fig.1 on a larger scale;

in Fig. 4, 5, 6, 7 shows the method of connection of the supporting columns with Shoe;

in Fig. 4 - depicts a self-elevating floating platform Shoe in two positions:

moored at the side of the platform connected to a fixed tagum ropes winches;

pritoplennye and hanging on the rope winches,

in Fig. 5 - the Shoe is raised to the eyebolts are installed columns;

in Fig. 6 is a view along arrow In Fig. 5 on a larger scale;

in Fig. 7 - relative position of the column and the footing at the time of institution of the stopper.

The support column 1 with its tip spherical 2 3 and cylindrical surfaces of the Jack-up floating platform 4 with the portal 5 installed on its roof winches 6 with the rope 7 is equipped with a Shoe 8 with a Central opening 9, provided with a spherical surface 10. The Shoe 8 is suspended to it by double vertical Obukhov 11, the holes which are secured by clips 12 that are inserted into the holes 13 and 14 made on the guides horizontal ribs 15, connected by gestkoe 22, and rods 23, provided with a hole 24 and a longitudinal groove 25, the surfaces of which are curved according to the radius R. the Double vertical eyebolts are installed 11 with the stoppers 18, located on the support column 1, rods 23 and double vertical eyebolts are installed 21 axis 22 on the Shoe 8 form nodes of the joints of the support column 1 with the Shoe 8. This embodiment of the connection of nodes provides not rigid, as in the prototype, and a flexible connection between the support columns, 1 with the Shoe 8, which, as will be discussed below, reduced operating loads.

Winch 6, mounted on the lid of the portal 5, with ropes 7 are elements connecting the Shoe 8 to the supporting column 1.

Load from hanging on the support column 1 or silty soil Shoe 8 when the extraction is transmitted to the support column 1 through the double vertical eyebolts are installed 21, the axis 22 that interacts with the holes 24 on the rods 23, themselves thrust 23, the upper part of the grooves 25 on the rods 23, the stoppers 18 and double vertical eyebolts are installed 11. Implementation of vertical Obukhov 11 on the support column 1 and Obukhov 21 on the Shoe 8 dual allows you to place the rod 23 between the sheets Obukhov and exclude cantilever load on the stopper 18 and, thereby, to reduce the load on the entire node connection of the supporting column 1 with the Shoe 8 is the Yagami 23 longitudinal grooves 25 allows you to perform the same task, which fulfill the gaps "m" in the prototype, that is, to reduce load when pulling shoes 8 from the soil. The transfer of load from columns 1 to the Shoe 8 when it sadasivuni occurs through made them spherical surface 2 and 10. While the stoppers 18 are omitted in the longitudinal grooves 25 of the rod 23. The transfer of load through the spherical surface 2 and 10, has a larger contact surface than the annular flange in the prototype, and that the surface 2 is located within the diameter of the construction of the supporting column 1, not welded outside, as the annular flange in the prototype, reduces the load on the end of the support column 1 and the Shoe 8.

The implementation of the contacting surfaces 2 and 10 spherical, supply rods 23 of the longitudinal grooves 25 and the roundness of the holes 24 in the rods 23 by radius R allows the Shoe 8 to rotate relative to the support column 1 at a meeting with rigid inclusion with any side and slip past the solids and to avoid bending loads on the column 1, which also reduces the overall load on the support column 1 and the Shoe 8 and reduces their intensity. Thus the turning of the Shoe 8 relative to the support column 1 is limited by a cylindrical surface 3 is smaka 8 rounded radius R surface a longitudinal groove 25 on the deadlift 23 reduces the loading on the connection node in contact with the stopper 18.

The establishment of the stoppers 18 holes double vertical Obukhov 11 is along the guides formed by horizontal ribs 15 and rigidity 16, forming, as in the prototype P, only put on the side. While guides in the invention perceive only the additional load of the plane Obukhov), and in the prototype - the main vertical load pulling the Shoe, which also reduces the intensity of the connection node of the supporting column 1 with the Shoe 8.

The implementation of the collar 19 on the stopper 18 square to move through the U-shaped guides allows the working surface of the stopper 18 is round, that is more technologically advanced than the stopper square section in the prototype.

Implementation of the elements connecting the Shoe 8 to the supporting column 1 in the form of winches 6, ropes 7 are missing in the opening of the portal 5, reduces complexity and operational costs during the operations of connecting the Shoe 8 to the column 1, as a separate winches have less intensity and require lower operating costs than slings, primary and secondary, and floating crane in the prototype.

The method of connection of the supporting columns with Shoe 8 is the self-elevating floating platform 4. Ropes 7 winches 6 is lowered into the opening of the portal 5, remove the top and connect with the tops of the rods 23. Then the Shoe 8 protoplanets and hangs on the ropes 7 winches 6. The tabs 12 are removed from the holes 13 on the ribs 15. Column 1 is lowered a little, the stoppers 18 are removed from the holes Obukhov 11 and remain in the guide (between the horizontal abrami 15). At the conclusion of the stoppers 18 and the latch 12 is used as a pry bar-lever, pulling the stopper 18 and the bracket 20 being inserted with its end into the hole 17 on the hardness of 16.

Then, working winches 6 on the rise, raise the Shoe 8 until the tops of the rods 23 between the eyebolts are installed 11 and stop the winch 6. Because the ropes 7 winches 6 focused on the eyebolts are installed 11, rod 23 is fixed in the gap between the eyebolts are installed 11.

Further approximation of the support columns 1 and Shoe 8 is produced by prispuskaya column 1, as the speed of lowering of the column 1 is lower than the speed lifting winches 6, and the rendezvous operations must be performed at minimum speeds.

The convergence of the column 1 and the Shoe 8 is made until the location of the stoppers 18 in the middle of the longitudinal grooves 25 on the rods 23, after which the stoppers 18 by means of the retainer 12 are inserted into holes Obukhov 11 through the slot 25 on the rods 23 and sacri Obukhov 11. The output of the stoppers 18 to the left is prevented square shoulders 19 on them.

After fixing the stoppers 18 Shoe 8 is lowered by the winch 6 to the position until it is hung by rods 23 on the stoppers 18, after which the ropes 7 are detached from the rods 23 and displayed at the top.

In the present method the joints of the support column 1 with the Shoe 8 are not used slings, primary and secondary, and floating crane, thereby decreasing the complexity and operational costs for implementing the method in comparison with the prototype.

1. The reference column self-elevating floating platform equipped with portals from tripping, lifting mechanisms, with a removable Shoe made with a Central hole communicating with adequately performed by the surface of the tip of the column that contains the connection with the Shoe, including the stoppers with the guides and clamps, and the elements connecting the Shoe, characterized in that the extremity of the column and the hole in the Shoe is made with spherical surfaces, and each connection columns with Shoe made in the form of thrust with a hole and a longitudinal groove, the stoppers are mounted on the tip of the column and placed in the grooves of the rod, which is located in Otopeni radius, and the stoppers are made in the form of a circular axis, provided with a square shoulder in the sizes of the diameters of the shaft, with the guides formed by the horizontal ribs placed on both sides of the junction end of the column and pull, and connection of the Shoe to the column is made in the form prescribed in the portal winches, ropes which held in the opening of the portal.

2. The method of connection of the supporting columns with a removable Shoe, including printablepage Shoe, the manipulation of the column through the trip mechanism of the platform, characterized in that flooded Shoe hung on the ropes installed on the portal platform hoists, which connect with swartout Shoe at the side of the platform is fixed in its double vertical rods eyebolts are installed, lower a little below the bottom of the platform column with trip mechanism, remove the stopper from the hole Obukhov, then raise the Shoe to the tip of the column, then down the column to the height of the stoppers near the middle of the longitudinal groove of the rod, get the stopper out of the guides into the holes Obukhov on the column and the notch on the rods and hang a Shoe rods on the brakes on the column, after which the ropes on disconnect

 

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