CN112359861A

CN112359861A - Seabed anti-sinking mechanism and using method

Info

Publication number: CN112359861A
Application number: CN202011186573.XA
Authority: CN
Inventors: 杨帆; 李晨; 张鹏举; 汪天伟; 梁黎; 张浩楠; 涂林枫
Original assignee: Shanghai Linxi Intelligent Technology Co ltd; No 750 Test Field of China Shipbuilding Industry Corp
Current assignee: Shanghai Linxi Intelligent Technology Co ltd; No 750 Test Field of China Shipbuilding Industry Corp
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-02-12

Abstract

The invention relates to a seabed anti-sinking mechanism and a using method thereof, the mechanism comprises a bearing steel structure and a steel base, two sides of the upper surface of the steel base are respectively connected with a spread wing through a rotating shaft, and the spread wing can turn over through the rotating shaft; the middle of the upper surface of the steel base is connected with a bearing steel structure through an angle adjusting block; rotatable T-shaped handles are further mounted at the two ends of the top of the steel base; when the seabed anti-settling mechanism is lowered, the two side wings and the seabed anti-settling mechanism are connected through the steel wire rope, so that the wings are in a retracted state; after the wing is installed in place, the steel wire rope is cut off through the ROV, the two side unfolding wings are put down, and after the two side unfolding wings are flush with the surface of the anti-sinking mechanism, the T-shaped handle is rotated through the ROV, so that the T-shaped handle stops the unfolding wings, and the unfolding wings are prevented from being lifted up under the influence of buoyancy. When the seabed anti-sinking mechanism is lowered to the seabed, if the seabed inclines, the angle of the angle adjusting block is adjusted according to the inclination angle of the seabed, so that equipment connected with the upper part of the bearing steel structure is kept in a horizontal state.

Description

Seabed anti-sinking mechanism and using method

Technical Field

The invention relates to a shallow foundation structure of an underwater production system, in particular to a seabed anti-sinking mechanism.

Background

In offshore engineering, when a pile foundation guide pipe frame is initially set to the bottom, the bottom of the guide pipe frame is prevented from sinking mainly by an anti-sinking plate arranged below a mud level layer frame. The general seabed anti-sinking mechanism does not have two-side spread wings, the stressed surface area is small, and the anti-sinking load-carrying capacity is insufficient. And under the condition that the wings are not spread on two sides, the propeller can stir seabed sludge when the ROV works, the sight of the ROV can be obstructed, and the working efficiency is influenced. The general seabed anti-sinking mechanism does not have a horizontal adjusting mechanism, when the inclined angle appears on the seabed mud layer plane, the mud entering angle of the anti-sinking mechanism can not be adjusted in time, so that the anti-sinking mechanism can not be kept horizontal, the working efficiency is influenced, and the anti-sinking mechanism is in an inclined state for a long time and has certain potential safety hazard. In addition, the general seabed anti-sinking mechanism is not internally provided with a steel structure clapboard, so that the stability is poor, and the bending moment strength is insufficient.

Disclosure of Invention

The invention aims to provide a seabed anti-settling mechanism and a using method thereof, which are used for improving the loading capacity of the anti-settling mechanism and preventing sludge from entering into an ROV working space; meanwhile, when the plane of the seabed mud layer is inclined, the mud entering angle of the corresponding side of the anti-settling mechanism is adjusted, so that the mud entering inclination of the anti-settling mechanism caused by the inclination of the seabed is reduced; and the stability of the dustproof mechanism is improved, the mud-entering friction force is increased, and the bending strength is enhanced.

In order to achieve the purpose, the technical scheme of the invention is as follows: a seabed anti-sinking mechanism comprises a bearing steel structure and a steel base, wherein two sides of the top of the steel base are respectively connected with a spread wing through a rotating shaft, and the spread wing can turn over through the rotating shaft; the middle of the upper surface of the steel base is connected with a bearing steel structure through an angle adjusting block; and rotatable T-shaped handles are further mounted at two ends of the top of the steel base.

Furthermore, two ends of the upper surface of the steel base are respectively provided with two positioning guide piles.

Further, a steel structure clapboard is welded in the steel base.

Furthermore, a drain hole is formed in the top of the steel base.

A method for using a seabed anti-settling mechanism is characterized in that when the seabed anti-settling mechanism is lowered, two side wings and the seabed anti-settling mechanism are connected through a steel wire rope, so that the wings are in a retracted state; after the wing is installed in place, the steel wire rope is cut off through the ROV, the two side unfolding wings are put down, and after the two side unfolding wings are flush with the surface of the anti-sinking mechanism, the T-shaped handle is rotated through the ROV, so that the T-shaped handle stops the unfolding wings, and the unfolding wings are prevented from being lifted up under the influence of buoyancy.

Further, when the seabed anti-sinking mechanism is lowered to the seabed and if the seabed inclines, the angle of the angle adjusting block is adjusted according to the inclination angle of the seabed, so that equipment connected to the upper part of the bearing steel structure is kept in a horizontal state.

The invention has the beneficial effects that:

1. the unfolding wings can be installed in place by self weight under the condition that a suction pump is not needed, and the anti-sinking load-carrying capacity can be improved by unfolding the unfolding wings;

2. the angle adjusting block can adjust the mud inlet angle of the corresponding edge according to the inclination angle of the seabed so as to reduce the mud inlet inclination of the anti-sinking mechanism caused by the inclination of the seabed.

3. Prevent sinking the inside steel construction baffle of mechanism can strengthen preventing sinking the stability of mechanism, frictional force when increasing income mud increases bending strength.

4. The drain hole at the top of the anti-sinking mechanism can balance drainage and reduce sinking resistance.

Drawings

FIG. 1 is a cross-sectional view of a subsea anti-settling mechanism of the present invention;

FIG. 2 is a schematic view of the subsea anti-settling mechanism and the deployment wing of the present invention in a stowed state;

FIG. 3 is a schematic view of the subsea anti-settling mechanism of the present invention in place with the two side wings lowered;

FIG. 4 is a schematic diagram of the anti-sinking mechanism for the seabed of the invention, which keeps the bearing steel structure in a horizontal state through an angle adjusting block when the plane of the seabed mud layer is inclined.

Detailed Description

The invention is further described with reference to the following figures and examples.

As shown in figure 1, the seabed anti-sinking mechanism comprises a positioning guide pile 1, a spreading wing 2, an angle adjusting block 3, a T-shaped handle 4, a steel structure partition plate 5, a bearing steel structure 7 and a steel base 8.

Two ends of the top of the steel base 8 are respectively provided with two positioning guide piles, and the middle part of the steel base is connected with a bearing steel structure 7 through four angle adjusting blocks 3; the two sides of the top of the steel base 8 are respectively connected with the wing-unfolding devices 2 through rotating shafts, and the wing-unfolding devices 2 can be overturned through the rotating shafts. T-shaped handles 4 are further mounted at two ends of the upper surface of the steel base 8, and the T-shaped handles 4 are rotatable handles. A steel structure partition plate 5 is welded in the steel base 8, and a drain hole 6 is formed in the top of the steel base 8. Wherein:

(1) the positioning guide pile 1 is used for guiding the test equipment to be installed in place;

(2) the wing unfolding 2 is folded when being put down, so that the resistance is reduced;

(3) the angle adjusting block 3 can adjust the mud inlet angle of the corresponding side when the plane of the seabed mud layer inclines;

(4) the T-shaped handle 4 is used for unfolding the wing to be unfolded and rotating the T-shaped handle to prevent the wing to be unfolded after being installed in place;

(5) the steel structure partition plate 5 is used for separating water flow and reducing resistance force during downward placement;

(6) and the drain hole 6 is used for balancing drainage and reducing sinking resistance.

The lowering process of the anti-settling mechanism comprises the following steps:

(1) when the anti-sinking mechanism is integrally lowered and installed, the wing spreaders at two sides and the anti-sinking mechanism are connected through the steel wire rope, so that the wing spreaders are in a retracted state, and the descending resistance is reduced, as shown in fig. 2; after the wing is installed in place, the steel wire rope is cut off through an ROV (underwater remote control robot), the two side spreading wings are put down, and when the two side spreading wings are flush with the surface of the anti-sinking mechanism, the T-shaped handle is rotated through the ROV, so that the spreading wings are prevented from being lifted up under the influence of buoyancy, and the view in figure 3 is shown.

(2) When the plane of the seabed mud layer inclines, the angle adjusting block 3 can be correspondingly adjusted according to the specific inclination angle, so that the bearing steel structure 4 is kept in a horizontal state, and finally, equipment connected with the upper part of the anti-sinking mechanism is kept in a horizontal state, as shown in figure 4.

Claims

1. The utility model provides a mechanism is prevented sinking by seabed, includes bearing steel construction, steel base, its characterized in that: two sides of the top of the steel base are respectively connected with the unfolding wings through rotating shafts, and the unfolding wings can be turned over through the rotating shafts; the middle of the upper surface of the steel base is connected with a bearing steel structure through an angle adjusting block; rotatable T-shaped handles are further mounted at two ends of the upper surface of the steel base.

2. The subsea anti-settling mechanism of claim 1, wherein: two positioning guide piles are respectively arranged at two ends of the top of the steel base.

3. The subsea anti-settling mechanism of claim 1, wherein: and a steel structure clapboard is welded in the steel base.

4. The subsea anti-settling mechanism of claim 1, wherein: and a drain hole is formed in the top of the steel base.

5. A method of using the subsea anti-settling mechanism of any of claims 1-4, wherein: when the seabed anti-settling mechanism is lowered, the two side wings and the seabed anti-settling mechanism are connected through the steel wire rope, so that the wings are in a retracted state; after the wing is installed in place, the steel wire rope is cut off through the ROV, the two side spreading wings are put down, and when the two side spreading wings are flush with the surface of the seabed anti-sinking mechanism, the T-shaped handle is rotated through the ROV, so that the T-shaped handle stops the spreading wings, and the spreading wings are prevented from being lifted up under the influence of buoyancy.

6. The method of using the subsea anti-settling mechanism of claim 5, wherein: when the seabed anti-sinking mechanism is lowered to the seabed, if the seabed inclines, the angle of the angle adjusting block is adjusted according to the inclination angle of the seabed, so that equipment connected with the upper part of the bearing steel structure is kept in a horizontal state.