CN105683448A

CN105683448A - Offshore platform with clamping wedges

Info

Publication number: CN105683448A
Application number: CN201480051340.5A
Authority: CN
Inventors: 克拉斯·奥尔特曼
Original assignee: Overdick GmbH and Co KG
Current assignee: Tractebel Overdick GmbH
Priority date: 2013-09-25
Filing date: 2014-09-18
Publication date: 2016-06-15
Anticipated expiration: 2034-09-18
Also published as: CN105683448B; DE102013110599A1; WO2015044028A1; MY178700A; DE102013110599B4; EP3049576A1; SG11201602086XA

Abstract

The invention relates to an offshore device with a structure (2) with at least one component guide (21) with a seabed-side opening (6a) and with at least one elongate component (3) with a longitudinal direction (L) and with an outer wall which is introduced through the opening (6a) into the component guide (21) with a clearance, and with a clearance-reducing clamping device (8), wherein the clamping device (8) has clamping elements (10) and the clamping elements (10) are connected to in each case an adjusting device (11) by means of which the clamping elements (10) are movable back and forth along the longitudinal direction (L) of the elongate component (3) and can be fixed in a clamping position.

Description

There is the offshore platform of clamping wedge

Technical field

The present invention relates to a kind of offshore unit with structure and at least one elongate member and a kind of method for being clamped in by structure at least one elongate member.

Background technology

In the prior art, sufficiently known, offshore unit has the form of production platform, power distribution station platform etc. Known offshore unit has platform, can assemble or can assemble the structure of similar oil-well rig etc. on the platform.

Offshore unit has one or more supporting leg, and preferably has three or four supporting legs. The offshore platform of the platform installed voluntarily and movement additionally has such supporting leg, and platform can move along this supporting leg. In installation site, supporting leg such as can be declined by jacking system, and platform from the emersion of its sea floated and rises to operation height by identical jacking system.

A kind of clamp device for cylindrical part disclosed in DE3122401C2, two rack frames wherein it are provided with in a longitudinal direction along pillar, and rack member is by pulling two inclined sides relative to each other to offset horizontally from by means of screw rod, and is fixed on pillar by being pressed in rack frame and therefore by platform by its tooth.

At this, being provided with perforate and guide portion in platform, supporting leg can move along guide portion relative to platform. Certainly exist, between perforate and the outer wall of supporting leg in platform, the gap determined. Running on height, the platform load along the axis effect of lower limb must flow through clamp device and is delivered to supporting leg. This produces a problem, namely there is gap between the outer wall of supporting leg and perforate, although this gap also allows for the supporting leg relative movement relative to platform when axial restraint. Such relative movement is disadvantageous, this is because the seaway load of effect can not be directly delivered to platform on supporting leg, but such as causes supporting leg impact in guide portion and and then causes that they damage.

Summary of the invention

Therefore, it is an object of the invention to propose a kind of being described previously for and avoid the above-mentioned offshore unit determined and provide a kind of method for being fixed on by structure at least one elongate member, thus avoiding drawbacks described above.

This purpose realizes by having the offshore unit of the feature described in claim 1 in first aspect.

This purpose is realized by offshore unit, and described offshore unit has structure, and this structure can be such as platform, but can also be other structure, and described structure has: at least one parts guide portion, and described parts guide portion has seabed side opening. Described offshore unit has at least one elongate member, described elongate member is such as supporting leg, but can also be waterproof casing or caisson, and there is outer wall, and be introduced into by the opening of traverse side, seabed, gap or can be introduced in parts guide portion. This gap reduces at least through the clamping device according to the present invention. By this clamping device, elongate member can directly be delivered to structure in the load of effect on the longitudinal direction of parts. Such as, seaway load that is that act on a supporting leg and that have great magnitude can be delivered to structure by supporting leg, especially platform structure.

According to the present invention, each holder regulates device with one respectively and is connected, and holder can utilize adjustment device move back and forth along the longitudinal direction of elongate member and can be fixed on clip position. As such, it is advantageous to, holder vertically moves when the offshore platform set up.

In a particularly advantageous embodiment of the present invention, clamping device has the seal face being arranged in platform interior, this seal face is arranged obliquely relative to outer wall, and clamping device has the holder of wedge shape, and this holder can be arranged or can be arranged between outer wall and seal face. This structural architecture of clamping device especially consolidates, and when known structure, when particularly in known platform, comes additionally installed even by repacking.

Advantageously, seal face is along the circumference of parts guide portion and more preferably disposed circumferentially around along opening. Opening and/or parts guide portion can be designed conglobate in level cross-sectionn, thus enabling in particular to hold the supporting leg with circular cross section. But dihedral can also be provided with, especially triangle, dimetric or there is any relatively big angle quantity and the open cross-section of corresponding supporting leg cross section.

Advantageously, seal face extends upwardly toward sea floor slope in the side of outer wall. Opening is provided with, preferably along its circumference tilt, the seal face surrounded, and each seal face has the identical angle of the outer wall relative to elongate member (preferred supporting leg). Gap between seal face and outer wall is designed wedgewise towards seabed. It is respectively arranged with the holder of wedge shape in the gap, with by realizing clamping effect from the side, seabed of seal face and reduce gap or seal face and outer wall can being carried out extruding on the direction in seabed.

Opening can but need not directly engage in lateral wall. Seal face can be arranged directly on lateral wall, it is preferable that arranges along opening at platform interior. Seal face can also be arranged along the opening of interior deck (such as, double-deck) further in platform interior.

Advantageously, holder can vertically move when offshore platform and especially be tucked between seal face and outer wall also by moving both vertically, and the adjustment motion thereby through level can produce vertical clamping effect.

Preferably, holder has liner on the side of outer surface. The function of this liner is in particular, in that to produce the effect of dynamic balance and power distribution carry out homogenization and and then improves the transmission of horizontal force between supporting leg and platform.At this, this liner is elastomer. But it is also contemplated that, outer surface has tooth or tooth row, to have the effect strengthening friction.

Holder has the securing member (such as, two or any greater number of eyelet) of the cylinder driving for fixed hydraulic on the side of the inside of its direction structure body, air cylinder driven holder moves back and forth in a longitudinal direction, and is preferably fixed on its clip position by holder.

Can also be realized by other fixture or support to fix. Fixture can be additional to or replace cylinder to play its effect. This fixture can be fishbolt, pin, pull bar etc., and is fixed on clip position by holder.

In an improvement project of the present invention, being provided with the guide portion for holder on the side of seal face, described guide portion prevents the skew transverse to adjustment motion of holder. Side guide portion could be for a part for the recess of each holder, and is preferably designed to be waterproof.

Advantageously, holder is arranged in the recess of waterproof. Preferably, holder is removable. For this, for instance inspection opening can be arranged for each holder in double-deck, can from structure, holder be checked simply by this opening.

The platform raising and lowering along at least one elongate structure body (especially there is the form of at least one supporting leg) can be realized by known jacking system.

In a second aspect of the present invention, this purpose realizes by having the method for claim 9.

The method is particularly suitable for utilizing in an above-mentioned offshore unit and performs. At this, the elongate member with outer wall is inserted at least one guide portion of structure through the opening of side, seabed, and reduces the gap between elongate member and guide portion by clamping device. Pass through the method according to the invention, structure on the platform of offshore unit is arranged in elongate member first in a conventional manner, especially it is arranged at least one supporting leg, and afterwards platform is preferably arranged on supporting leg on run location, fixed by clamping device, to reduce the gap between supporting leg and guide portion, wherein the holder of clamping device moves on the longitudinal direction of elongate member, and holder will be fixedly held in elongate member on construction clip position.

Preferably, each holder is being pressed up to seal face towards the side in seabed and on the outer wall of elongate member at this from the side, seabed of the seal face of structure. Advantageously, holder does not receive vertical load at this, but only receives horizontal load and thus reduce gap.

Preferably, holder is individually formed the wedge-type shape with the pinnacle pointing to seabed.

Advantageously, holder is crushed on the outer wall of seal face and supporting leg simultaneously.

Accompanying drawing explanation

The present invention illustrates according to the embodiment in below eight accompanying drawings. These accompanying drawings are:

Fig. 1 is axonometric chart, and it is the partial section view of the offshore platform with clamping device and supporting leg according to the present invention.

Fig. 2 is the axonometric chart of the side, seabed of the offshore platform in Fig. 1.

Fig. 3 is axonometric chart, and it is around the partial section view of the clamping wedge that supporting leg is arranged.

The axonometric chart in the left side of the inclination in Fig. 4 Fig. 3.

Fig. 5 has the clip position around the clamping wedge regulating device belonging to supporting leg.

Fig. 6 is the off-position of clamping wedge.

Fig. 7 is clamping wedge in side view.

Fig. 8 illustrates the clamping wedge in Fig. 7 with axonometric chart.

Detailed description of the invention

Fig. 1 illustrates a part for the offshore unit 1 according to the present invention, and offshore unit 1 has offshore platform 2 and supporting leg 3. Offshore unit 1 has multiple supporting leg 3, but illustrate only one of them supporting leg lower limb 3. Supporting leg is erected on (unshowned) seabed, and offshore platform 2 is arranged on sea level in running height. The region of offshore platform 2 side, seabed in FIG includes the double-deck 4 with double-deck opening 4a and side, the seabed yoke plate 6 with yoke plate opening 6a.

Yoke plate opening 6a and double-deck opening 4 are perpendicularly inserted a part for supporting leg 3. This part for supporting leg 3, it is preferable that whole supporting leg 3 has identical cross section along the longitudinal extension on its longitudinal direction L. Supporting leg 3 is fixed on the platform 2 especially receiving vertical power by unshowned securing member. Yoke plate opening 6a has substantially circular open cross-section, and the diameter of this open cross-section is more than the diameter of the cross section of supporting leg 3. Therefore, supporting leg 3 has gap in offshore platform 2. Due to the size difference of cross section, supporting leg 3 has gap in double-deck 4 and yoke plate 6. Time on supporting leg 3 sometimes and particularly in heaving of the sea, effect has huge seaway load, and this can cause the supporting leg 3 horizontal relative motions relative to platform 2. In order to by the seaway load of level being directed to platform 2 from supporting leg 3 and avoiding relative motion between supporting leg 3 and platform 2 to be provided with the clamping device 8 according to the present invention. Clamping device 8 includes multiple clamping wedge 10, these clamping wedges move back and forth on the longitudinal direction L of supporting leg 3 respectively through two type hydraulic actuator cylinders 11, and cylinder 11 can be passed through and be fixed between the outer wall of supporting leg 3 and relevant seal face 13 on they corresponding clip positions, and clamping device 8 also includes securing member 12, it is fastened on platform 2 for by cylinder 11. One end of each cylinder 11 and securing member 12 are pivotally connected to, and another end of each cylinder 11 is pivotally connected to the clamping wedge 10 distributing to this cylinder. Platform 2 has the seal face 13 arranged obliquely between double-deck 4 and side, seabed yoke plate 6, and this seal face is around double-deck opening 4a and yoke plate opening 6a. Seal face 13 is flatly designed at this, although it is also contemplated that other shape, but it is relative with the outer wall of supporting leg 3 and arrange obliquely relative to longitudinal direction L.

Determine the outer surface of supporting leg 3 and the positioned opposite of seal face 13 as follows: each clamping wedge 10 can coordinate by power and be inserted in the way of form fit in the gap formed between the outer wall of seal face 13 and supporting leg 3. Therefore, especially the horizontal movement of supporting leg 3 is directly delivered to platform 2 by clamping wedge 10.

Fig. 2 (that is, the direction on sea level) from below illustrates the view of the platform 2 in Fig. 1. Yoke plate opening 6a is basically designed to circle, and by being strengthened around the annular slab 20 of yoke plate opening 6a at seabed side ring. Platform 2 has the guide portion for each of which supporting leg 3, and relevant supporting leg 3 is guided by guide portion, and vertically extends at platform 2 or at least some of middle of platform 2. The cross section of yoke plate opening 6a is more than being designed to keep the cross section of the supporting leg 3 of circle in the same manner on whole longitudinal direction L.It is inserted in the gap between the seal face 13 and the outer wall of supporting leg 3 of supporting leg 3 and the same clamping wedge 10 around supporting leg 3 reduces or inhibits the supporting leg 3 gap relative to platform 2.

Fig. 3 illustrates the layout in the Fig. 1 in the region of double-deck 4 as three-dimensional cross-sectional view. In figure 3 it can be seen that four clamping wedges 10, these clamp wedge being equally spaced each other around at supporting leg 3. Supporting leg 3 altogether by eight clamp wedges 10 around. Clamping wedge 10 structure mutually the same, and especially have on clip position towards sea surface identical locking angle. Therefore, the clearance angle α between the outer wall of seal face 13 and supporting leg 3 is identical, and corresponding to the locking angle of clamping wedge 10. Fig. 3 especially illustrates: clamping wedge 10 is by two edges along seal face 13 and is perpendicular to the side yoke plate 30 of seal face 13 and guides, thus stoping the horizontal-shift being transversely to the machine direction direction L of clamping wedge 10.

Each clamping wedge 10 is being formed with two circular eyelets 31, the end of the side, seabed of the two eyelet fixative die mould or mechanical type cylinder 11 in couples away from side, seabed (that is, the inner side of object platform 2).

Fig. 4 illustrates the layout Fig. 3 from other visual angle, and wherein, compared with the part shown in Fig. 3, the part in side, seabed of the offshore unit 1 shown in Fig. 4 shows supporting leg 3 and platform 2 more. Especially in the diagram it can be seen that, supporting leg 3 is surrounded by the guiding tube 21 identical with the cross section of yoke plate opening 6a at least in part, and guiding tube only has space in the region of clamping wedge 10, thus allowing clamping wedge 10 to be applied directly on the outer wall of supporting leg 3. The hydraulic not indicated in the diagram or mechanical type cylinder 11 extend in the outside of guiding tube 21. Especially can handle and can provide for simple replacement of clamping wedge 10 from the inner space of platform 2, this is because at two inspection openings 33 guiding formation between yoke plate 30 to be used for each clamping wedge 10 of each clamping wedge 10.

Fig. 5 schematically shows the layout on the clamping wedge 10 clip position on supporting leg 3. Each clamping wedge 10 is driven by two hydraulic cylinders 11 and sails. Clamping wedge 10 enables in particular at longitudinal direction L (that is, the above-below direction in Fig. 5) upper mobile, but also can move up in the side transverse to longitudinal direction L. Do not show that relevant hydraulic control device. Equally, hydraulic cylinder 11 fixing on the securing member 12 of the inside of platform 2 is not showed that.

Fig. 6 illustrates the clamping wedge 10 position on off-position, and on this off-position, clamping wedge 10 is extracted out on the direction of side, seabed from the gap between the outer wall of seal face 13 and supporting leg 3. Platform 2 is not fixedly held on supporting leg 3 on this position.

Fig. 7 illustrates a holder 10 as side view. Clamping wedge 10 has reinforcement friction or dynamic balance liner 70 at it in the way of possible on the side of supporting leg 3. At this, it can be rubber packing or plastic gasket, but can consider that substantially tooth row, tooth etc. are as liner 70.

Fig. 8 illustrates clamping wedge 10 as axonometric chart. The side in the face of seal face 13 of clamping wedge 10 is made up of such as smooth steel. In deviating from of wedge 10 of clamping, the side in seabed is respectively arranged with two eyelets 80, for fixing each cylinder 11 pivotally.

List of reference characters

1 offshore unit 2 offshore platform

3 supporting leg 4 double-decks

Side, 4a double-deck opening 6 seabed yoke plate

6a yoke plate opening 8 clamping device

10 clamping wedge 11 cylinders

12 securing member 13 seal faces

20 annular slab 21 guiding tubes

30 side yoke plate 31 circular aperture

33 inspection opening 70 dynamic balance liners

80 eyelet L longitudinal directions

The α angle of wedge, clearance angle

Claims

1. an offshore unit, comprising:

Having the structure (2) of at least one parts guide portion (21), described parts guide portion has seabed side opening (6a);

At least one elongate member (3), described elongate member has longitudinal direction (L) and outer wall, and described elongate member by being introduced in described parts guide portion (21) through described opening (6a) in the way of there is gap; With

Gap reduces uses clamping device (8),

It is characterized in that, described clamping device (8) includes holder (10), and each described holder (10) is connected to adjustment device (11), by described adjustment device, described holder (10) can move back and forth along the described longitudinal direction (L) of described elongate member (3) and can be fixed on clip position.

2. offshore unit according to claim 1, it is characterized in that, described clamping device (8) has the seal face (13) being arranged in inside platform, described seal face is arranged obliquely relative to described outer wall, and described clamping device (8) has the described holder (10) of wedge shape, and described holder is arranged between described outer wall and described seal face (13).

3. offshore unit according to claim 1, it is characterised in that described seal face (13) is along the circumference of described opening (6a).

4. the offshore unit according to claim 1,2 or 3, it is characterised in that described seal face (13) extends upwardly toward sea floor slope in the side of described outer wall.

5. offshore unit according to any one of claim 1 to 4, it is characterised in that described holder (10) has the liner (70) for making power distributed uniform on the side face out surface.

6. offshore unit according to any one of claim 1 to 5, it is characterized in that, described holder (10) has the eyelet (31) for the driving cylinder of fixed hydraulic (11) on the side of the inside of its described structure of sensing (2).

7. offshore unit according to any one of claim 1 to 6, it is characterised in that the side at described seal face (13) is provided with holder guide portion (30).

8. according to aforementioned right want according to any one of offshore unit, it is characterized in that, described seal face (13) limits double-deck (4) in open side, and can change described holder (10) inside the structure of described double-deck.

9. the method being used for being arranged at least one elongate member with longitudinal direction (L) (3) by structure (2), wherein, described at least one elongate member (3) is introduced in parts guide portion (21) through seabed side opening (6a) by its outer wall in the way of there is gap, and reduce the described gap between described elongated member (3) and described parts guide portion (21) by clamping device (8), wherein, the holder (10) of described clamping device (8) is upper mobile at the described longitudinal direction (L) of described elongate member (3), and described structure (2) is fixedly held in described elongate member (3) by described holder (10) on clip position.

10. method according to claim 9, it is characterized in that, each described holder (10) is being crushed on the upper described outer wall with described elongate member (3) of described seal face (13) from the side, seabed of the seal face (13) of described structure (2) towards the direction in seabed.

11. the method according to claim 9 or 10, it is characterised in that the described holder (10) of wedge shape is crushed on described seal face (13) and described outer wall simultaneously.