CN115924001A - Suction anchor reinforcing device, suction anchor and suction anchor mounting method - Google Patents

Suction anchor reinforcing device, suction anchor and suction anchor mounting method Download PDF

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Publication number
CN115924001A
CN115924001A CN202211379253.5A CN202211379253A CN115924001A CN 115924001 A CN115924001 A CN 115924001A CN 202211379253 A CN202211379253 A CN 202211379253A CN 115924001 A CN115924001 A CN 115924001A
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CN
China
Prior art keywords
suction anchor
fluke
base body
anchor
sliding
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Pending
Application number
CN202211379253.5A
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Chinese (zh)
Inventor
张岚
曲栋良
陈海蕴
运飞宏
王立权
刘鸣
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Harbin Engineering University
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Harbin Engineering University
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Publication date
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Priority to CN202211379253.5A priority Critical patent/CN115924001A/en
Publication of CN115924001A publication Critical patent/CN115924001A/en
Pending legal-status Critical Current

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Abstract

The invention provides a suction anchor reinforcing device, a suction anchor and a suction anchor mounting method, and belongs to the field of ocean engineering. This suction anchor reinforcing apparatus includes: the base body is arranged on the side wall of the suction anchor; a control mechanism disposed within the substrate; and an anchor fluke slidably connected to the base and movably connected to the control mechanism; wherein the fluke can be brought to a predetermined angle to the base by manipulation of the control mechanism. Meanwhile, the invention also discloses a suction anchor comprising the reinforcing device. The suction anchor and the reinforcing device thereof provided by the invention have the advantages that the anchor fluke is easy to unfold and operate, and the additional penetration resistance is small, so that the vertical and anti-pulling bearing capacity of the suction anchor can be improved, and the mounting efficiency of the suction anchor can be improved.

Description

Suction anchor reinforcing device, suction anchor and suction anchor mounting method
Technical Field
The invention relates to the field of ocean engineering, in particular to a suction anchor and a reinforcing device thereof.
Background
The exploration and development of offshore oil are gradually moving to deep water and ultra-deep water, and the suction anchor has the advantages of capability of bearing vertical tension, high installation and positioning precision, low installation cost and capability of recycling and reusing, so that the suction anchor is more and more widely applied to the development of deep water oil and gas fields. The suction anchor is in an inverted barrel shape or an inverted cup shape with a closed top end and an open lower end, and is installed in an immersed manner by adopting a negative pressure principle; after the anchor is sunk, the negative pressure disappears. The suction anchor in this case is in fact like a conventional embedded stub, relying on the resistance of the surrounding soil to provide anchoring capability. In practical application, the traditional suction anchor has limited anchoring force, and particularly has the problem of insufficient vertical bearing capacity and uplift resistance under unfavorable conditions of soft soil foundation and geological conditions.
An invention patent with an authorization publication number of CN107031792B, namely a suction anchor strengthening device, a suction anchor and a method for installing the strengthening device, discloses a suction anchor strengthening device, a suction anchor and a method for installing the strengthening device, wherein the suction anchor comprises an anchor barrel; the reinforcement device includes: the base part is detachably fixed on the anchor cylinder, and a notch is formed in the base part; the web plate is fixedly connected with the base in a rotatable mode; the web is provided with a protruding part which abuts against the base when the web is rotationally opened along the direction far away from the base; the opening angle of the web is less than or equal to 90 degrees; the first limiting stopper is fixed on the anchor cylinder, the size of the end part of the first limiting stopper is matched with that of the notch, and the first limiting stopper can be inserted into the notch. According to the reinforcing device, the web plate which is rotatably connected with the base is arranged, and the suction anchor is lifted and opened during installation so as to provide larger limiting force for the suction anchor when the reinforcing device enters the seabed. However, in practical application, the web plate is difficult to unfold and is not easy to realize, and the installation precision of the suction anchor is also influenced.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a suction anchor and a reinforcing device thereof.
The purpose of the invention is realized as follows: the method comprises the following steps:
the base body is arranged on the side wall of the suction anchor;
a control mechanism disposed within the substrate; and
the fluke is connected to the base body in a sliding mode and is movably connected with the control mechanism;
wherein the fluke can be brought to a predetermined angle to the base by manipulation of the control mechanism.
Further, the control mechanism includes:
the first end of the driving mechanism is arranged at the top of the base body, and the second end of the driving mechanism is arranged in the base body in a sliding manner; and
and the top of the folding and unfolding mechanism is fixedly connected with the second end of the driving mechanism, and the middle part of the folding and unfolding mechanism is connected with the fluke in a sliding manner.
Further, the driving mechanism is a lead screw module.
Further, the stowing and deploying mechanism comprises:
the first slide way is fixed on the side wall of the base body, and a first slide rail is arranged in the first slide way;
the second slide way is fixed on the side wall of the base body, and a second slide rail is arranged in the second slide way;
the top of the first cam groove plate is fixedly connected with the second end of the driving mechanism, and a sliding groove is formed in the side edge of the first cam groove plate; and
one end of the sliding pin is fixedly connected with the root part of the fluke, and the other end of the sliding pin is connected with the sliding groove of the sliding block in a sliding manner;
wherein the fluke slides in the first slide track and the first cam groove plate slides in the second slide track, the first and second directions being perpendicular to each other.
Further, the stowing and deploying mechanism comprises:
the third slide way is fixed on the base body, and a third slide rail is arranged in the third slide way;
the top of the sliding frame is fixedly connected with the second end of the driving mechanism and is in sliding connection with the third sliding rail;
the second cam groove plate is fixed on the base body, and the side surface of the second cam groove plate is provided with a sliding groove;
and one end of the cam connecting rod is rotatably connected with the root part of the fluke, and the other end of the cam connecting rod is in sliding connection with the sliding groove of the second cam groove plate.
Furthermore, the folding and unfolding mechanism also comprises a stop block connecting rod and a stop block;
one end of the stop block connecting rod is rotatably connected to the bottom of the sliding block, and the other end of the stop block connecting rod is rotatably connected to the stop block;
the number of the stop block connecting rods is at least two, and the stop block connecting rods, the stop blocks and the sliding blocks form a parallelogram mechanism.
Furthermore, the number of the anchor flukes and the number of the folding and unfolding mechanisms are multiple, and the plurality of the anchor flukes and the folding and unfolding mechanisms correspond to one another and are distributed and arranged along the longitudinal direction of the base body.
Further, two adjacent folding and unfolding mechanisms are connected through a connecting rod.
According to a second aspect of the present invention there is provided a suction anchor comprising the aforementioned suction anchor strengthening means.
According to a third aspect of the present invention, there is provided a method of installing the aforementioned suction anchor, the method comprising:
s101: the suction anchor penetrates into the seabed soil layer by means of self gravity;
s102: pumping out the seawater in the suction anchor, and continuously sinking and penetrating the suction anchor by virtue of negative pressure generated inside and outside the anchor cylinder;
s103: and after the suction anchor is sunk and penetrated in place, operating a control mechanism on the reinforcing device to unfold the fluke.
Compared with the prior art, the invention has the beneficial effects that: the suction anchor and the reinforcing device thereof have the advantages that the anchor fluke is easy to unfold and operate, the additional penetration resistance is small, the vertical and uplift bearing capacity of the suction anchor can be improved, the mounting efficiency of the suction anchor can be improved, and the application prospect is wide.
Drawings
FIG. 1 is a schematic structural view of a suction anchor and a reinforcing device thereof according to the present invention;
FIG. 2 is a schematic structural view of the suction anchor reinforcing apparatus of the present invention;
FIG. 3 is a schematic view of the control mechanism of the present invention;
FIG. 4 is a schematic structural view of the folding and unfolding mechanism of the present invention;
FIG. 5 is another schematic structural view of the force anchor and its reinforcing apparatus of the present invention;
FIG. 6 is another schematic view of the suction anchor reinforcing apparatus of the present invention;
FIG. 7 is another schematic view of the control mechanism of the present invention;
FIG. 8 is a schematic view of the fluke deployment process of the present invention;
FIG. 9 is a schematic view of the carriage of the drive mechanism of the present invention;
description of reference numerals:
100. the mechanical anchor comprises a suction anchor body, a suction anchor reinforcing device 200, a base body 1, a control mechanism 2, a driving mechanism 21, a folding and unfolding mechanism 22, a first slide way 221, a first slide way 222, a second slide way 223, a first cam groove plate 224, a sliding pin 225, a third slide way 226, a sliding frame 227, a first cam groove plate 231, a stop block connecting rod 232, a stop block and an anchor claw 3.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
According to a first aspect of the present invention, as shown in fig. 1 to 8, there is provided a suction anchor reinforcing apparatus comprising: a base 1 disposed on a sidewall of the suction anchor 100; a control mechanism 2 disposed in the base 1; and a fluke 3 slidably connected to said base 1 and movably connected to said control means 2; wherein said fluke 3 can be brought to a predetermined angle to said base body 1 by manipulating said control means 2.
In the embodiment, the control mechanism 2 is arranged in the base body 1, the anchor fluke 3 is connected to the control mechanism 2 in a sliding mode through the idler wheel at the end portion, the control mechanism 2 is operated to enable the anchor fluke to slide along the control mechanism, the base body 1 extends out to be inserted into a soil body, and therefore the reinforcing device can provide larger vertical bearing capacity and pulling-resistant bearing capacity for the suction anchor when entering the seabed. In practical application, the control mechanism 2 is operated to control the expansion of the fluke 3, so that the active control of the fluke 3 is realized, the suction anchor is not required to be lifted during the installation of the suction anchor so as to expand the fluke 3, the purpose of increasing the anchoring force of the suction anchor is realized, and meanwhile, the influence on the installation precision of the suction anchor is avoided. In addition, when retrieving, control mechanism 2 withdraws fluke 3 inside base member 1, avoids fluke 3 to produce great resistance when retrieving, is favorable to reducing construction cost, improves the efficiency of recovery work.
Further, as shown in fig. 3 to 4, the control mechanism 2 includes: a driving mechanism 21, a first end of which is arranged on the top of the base body 1, and a second end of which is arranged inside the base body 1 in a sliding manner; and a folding and unfolding mechanism 22, the top of which is fixedly connected with the second end of the driving mechanism 21, and the middle of which is connected with the fluke 3 in a sliding manner. Specifically, one end of the driving mechanism 21 is arranged at the top end of the base body 1, so that the operation is convenient; the stowing and deploying mechanism 22 is provided with a slide groove for switching the fluke 3 from the stowed condition to the deployed condition under the action of the drive mechanism 21. Preferably, the driving mechanism 21 is a lead screw module. The lead screw rotates to be connected at the top of base member 1, and 2 tops of control mechanism are equipped with operating handle, make the lead screw slider reciprocate through rotating rotatory handle, and then drive the motion of exhibition mechanism 22, realize the exhibition of receipts of fluke 3.
In some alternative embodiments, as shown in fig. 4, the stowing and deploying mechanism 22 comprises: the first slide way 221 is fixed on the side wall of the base body 1, and a first slide rail is arranged in the first slide way; the second slideway 222 is fixed on the side wall of the base body 1, and a second sliding rail is arranged in the second slideway; a first cam groove plate 223, the top of which is fixedly connected with the second end of the driving mechanism 21, and the side of which is provided with a sliding groove; one end of the sliding pin 224 is fixedly connected with the root of the fluke 3, and the other end is connected with the sliding groove of the sliding block 221 in a sliding manner; wherein the fluke 3 slides in the first slide track and the first cam groove plate 223 slides in the second slide track, the first and second directions being perpendicular to each other. Specifically, first cam groove plate 223 slides up and down along the first slide rail on base member 1 under the drive of actuating mechanism 21, and the root of fluke 3 passes through sliding pin 224 with the spout on first cam groove plate 223 sliding connection, drives fluke 3 and slides left and right along the second slide rail on base member 1 when first cam groove plate 223 reciprocates to realize the expansion of fluke 3. In practical application, the flukes 3 horizontally extend out of the matrix 1 and are inserted into the soil body, and the resistance of the anchor plates 3 to expansion is small.
In some alternative embodiments, as shown in fig. 7-8, the stowing and deployment mechanism 22 includes: the third slideway 225 is fixed on the base body 1, and a third slide rail is arranged in the third slideway; a carriage 226, the top of which is fixedly connected to the second end of the driving mechanism 21 and is slidably connected to the third slide rail; the second cam groove plate 227 is fixed on the base body 1, and a sliding groove is formed in the side surface of the second cam groove plate; a cam link 228 having one end rotatably connected to the root of the fluke 3 and the other end slidably connected to the slide groove of the second cam groove plate 227. Specifically, the root of the fluke 3 is rotatably connected with the sliding frame 226 through a rotating shaft, and is also slidably connected with the sliding groove on the second cam groove plate 227 through the cam connecting rod 228, when the sliding frame 226 is driven by the driving mechanism 21 to slide up and down along the third sliding rail on the base body 1, the fluke 3 moves up and down along with the sliding frame 226, and rotates around the rotating shaft connected with the sliding frame 226, so that the fluke 3 rotates and unfolds to the horizontal position while moving up and down, the fluke 3 is gradually inserted into the soil body and unfolds in the unfolding process, and the resistance of unfolding of the fluke 3 is reduced. Meanwhile, the anchor plate 3 is embedded in the notch of the base body 1, so that the transverse size of the base body 1 is reduced, and the additional penetration resistance is reduced.
Further, the folding and unfolding mechanism 22 further comprises a stop link 231 and a stop 232; one end of the stop block connecting rod 231 is rotatably connected to the bottom of the sliding block 221, and the other end of the stop block connecting rod 231 is rotatably connected to the stop block 232; at least two stopper links 231 are provided, and the stopper links 231, the stoppers 232 and the sliders 221 form a parallelogram mechanism. Specifically, in order to prevent the soil from entering the suction anchor reinforcing device during the penetration process, a stop link 231 and a stop 232 are arranged at the lower part of the folding and unfolding mechanism 22. Wherein, the shape of the stop block 232 is matched with that of the fluke outlet of the base body 1, and the lower part of the fluke outlet of the base body 1 is provided with a bulge for preventing the stop block 232 from moving downwards. When the sliding block 221 moves upwards, the stop block connecting rod 231 rotates by a corresponding angle due to the gravity of the stop block 232, so that the stop block 232 is folded inside the body and moves upwards along with the sliding block 221, and the opening of the outlet of the anchor fluke is realized; when the sliding block 221 moves downwards, when the stop block 232 moves to the lower part of the fluke outlet, the arranged bulge stops the downward movement of the stop block 232, and the sealing of the fluke outlet is realized.
In some alternative embodiments, as shown in fig. 1 to 8, the number of the flukes 3 and the deploying and retracting mechanisms 22 is multiple, and the flukes 3 and the deploying and retracting mechanisms 22 are arranged in a one-to-one correspondence and distributed along the longitudinal direction of the base body 1. Further, two adjacent folding and unfolding mechanisms 22 are connected through a connecting rod. The adjacent folding and unfolding mechanisms 22 are connected through the connecting rods, so that one set of driving mechanism 21 drives a plurality of groups of folding and unfolding mechanisms 22 and anchor flukes 3; through setting up multiunit fluke 3 and the mechanism 22 of taking down and opening up along the longitudinal distribution of base member 1, can increase total anchor area, and then increase the reinforcement effect of reinforcement device, improve the vertical bearing capacity and the resistance to plucking bearing capacity of suction anchor.
According to a second aspect of the present invention, as shown in fig. 1 and 4, there is provided a suction anchor comprising the aforementioned suction anchor reinforcement device. Particularly, the suction anchor reinforcing devices are uniformly distributed along the circumferential direction of the suction anchor, and the number of the suction anchor reinforcing devices can be flexibly arranged according to specific conditions. In addition, the suction anchor strengthening device can be fixed on the suction anchor through the detaching mechanism, and can be detached quickly when necessary, so that the suction anchor can be recovered quickly. When the suction anchor is installed, the suction anchor strengthening device is installed on the suction anchor body in advance, and after the suction anchor is sunk to the position, the fluke 3 is unfolded and inserted into the soil body by operating the control mechanism on the suction anchor strengthening device so as to provide additional anchoring force.
According to a third aspect of the present invention, as shown in fig. 9, there is provided a method of installing the aforementioned suction anchor, the method comprising: s101: the suction anchor penetrates into the seabed soil layer by means of self gravity; s102: pumping out seawater in the suction anchor, and continuously sinking and penetrating the suction anchor by virtue of negative pressure generated inside and outside the anchor cylinder; s103: and after the suction anchor is sunk and penetrated in place, operating a control mechanism on the reinforcing device to expand the fluke. When the suction anchor is installed, firstly, the suction anchor is sunk into a seabed mud layer, and the suction anchor sinks under water by means of self weight to reach the initial mud entering condition, so that the sealing requirement is formed in the anchor cylinder; then, pumping out seawater in the suction anchor by using a suction pump, and continuously sinking and penetrating the suction anchor by virtue of negative pressure generated inside and outside the anchor cylinder; after the suction anchor is sunk in place, the control mechanism on the reinforcing device is operated to expand the fluke assembly and insert the fluke assembly into the soil body so as to provide additional anchoring force.
By arranging the suction anchor reinforcing device on the suction anchor, the anchor fluke is easy to unfold and operate, and meanwhile, the additional penetration resistance is small, so that the underwater operation is easy, and the vertical and uplift-resistant bearing capacity of the suction anchor is improved, and the mounting efficiency of the suction anchor is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The invention discloses a suction anchor and a reinforcing device thereof, belonging to the field of ocean engineering. This suction anchor reinforcing apparatus includes: the base body is arranged on the side wall of the suction anchor; a control mechanism disposed within the substrate; and a fluke slidably connected to the base and movably connected to the control mechanism; wherein the fluke can be brought to a predetermined angle to the base by manipulation of the control mechanism. Meanwhile, the invention also discloses a suction anchor comprising the reinforcing device. The suction anchor and the reinforcing device thereof have the advantages that the anchor fluke is easy to unfold and operate, the additional penetration resistance is small, the vertical and uplift bearing capacity of the suction anchor can be improved, and the mounting efficiency of the suction anchor can be improved.

Claims (10)

1. A suction anchor consolidation apparatus, comprising:
a base body (1) provided on a side wall of the suction anchor (100);
a control mechanism (2) arranged in the base body (1); and
a fluke (3) slidably connected to the base body (1) and movably connected to the control mechanism (2);
wherein the fluke (3) can be brought to a preset angle with the base body (1) by operating the control means (2).
2. Suction anchor strengthening device according to claim 1, characterised in that the control mechanism (2) comprises:
a driving mechanism (21), the first end of which is arranged on the top of the base body (1), and the second end of which is arranged inside the base body (1) in a sliding manner; and
and the top of the folding and unfolding mechanism (22) is fixedly connected with the second end of the driving mechanism (21), and the middle part of the folding and unfolding mechanism is connected with the fluke (3) in a sliding manner.
3. The suction anchor consolidation apparatus according to claim 2, wherein the drive mechanism (21) is a lead screw module.
4. A suction anchor strengthening device according to claim 2, wherein the collapsing mechanism (22) comprises:
the first slide way (221) is fixed on the side wall of the base body (1), and a first slide rail is arranged in the first slide way;
the second slide way (222) is fixed on the side wall of the base body (1), and a second slide rail is arranged in the second slide way;
the top of the first cam groove plate (223) is fixedly connected with the second end of the driving mechanism (21), and a sliding groove is formed in the side edge of the first cam groove plate; and
one end of the sliding pin (224) is fixedly connected with the root part of the fluke (3), and the other end of the sliding pin is in sliding connection with the sliding groove of the sliding block (221);
wherein the fluke (3) slides in the first slide track and the first cam groove plate (223) slides in the second slide track, the first and second directions being perpendicular to each other.
5. The suction anchor strengthening device according to claim 2, wherein the collapsing mechanism (22) comprises:
the third slide way (225) is fixed on the base body (1) and is internally provided with a third slide rail;
a carriage (226) having a top fixedly connected to the second end of the drive mechanism (21) and slidably connected to the third slide rail;
the second cam groove plate (227) is fixed on the base body (1), and a sliding groove is formed in the side face of the second cam groove plate;
and one end of the cam connecting rod (228) is rotationally connected with the root part of the fluke (3), and the other end of the cam connecting rod is in sliding connection with the sliding groove of the second cam groove plate (227).
6. The suction anchor consolidation apparatus according to claim 4, wherein the deployment mechanism (22) further comprises a stop link (231) and a stop (232);
one end of the stop block connecting rod (231) is rotatably connected to the bottom of the sliding block (221), and the other end of the stop block connecting rod is rotatably connected to the stop block (232);
the number of the stop connecting rods (231) is at least two, and the stop connecting rods (231), the stop (232) and the sliding block (221) form a parallelogram mechanism.
7. A suction anchor strengthening device according to claim 2, wherein the fluke (3) and the collapsing means (22) are plural, and a plurality of flukes (3) and collapsing means (22) are provided in one-to-one correspondence and distributed along the longitudinal direction of the base body (1).
8. The suction anchor strengthening device according to claim 7, wherein adjacent two of the collapsing mechanisms (22) are connected by a link.
9. A suction anchor comprising the suction anchor strengthening device of any one of claims 1-8.
10. A method of installing a suction anchor according to claim 9, wherein the method of installing comprises:
s101: the suction anchor penetrates into the seabed soil layer by means of self gravity;
s102: pumping out seawater in the suction anchor, and continuously sinking and penetrating the suction anchor by virtue of negative pressure generated inside and outside the anchor cylinder;
s103: and after the suction anchor is sunk and penetrated in place, operating a control mechanism on the reinforcing device to expand the fluke.
CN202211379253.5A 2022-11-04 2022-11-04 Suction anchor reinforcing device, suction anchor and suction anchor mounting method Pending CN115924001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211379253.5A CN115924001A (en) 2022-11-04 2022-11-04 Suction anchor reinforcing device, suction anchor and suction anchor mounting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211379253.5A CN115924001A (en) 2022-11-04 2022-11-04 Suction anchor reinforcing device, suction anchor and suction anchor mounting method

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CN115924001A true CN115924001A (en) 2023-04-07

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130113009A (en) * 2012-04-05 2013-10-15 삼성중공업 주식회사 Suction pile
CN107031792A (en) * 2017-03-22 2017-08-11 湖北海洋工程装备研究院有限公司 The installation method of the reinforcement device of suction anchor, suction anchor and reinforcement device
CN207193984U (en) * 2017-07-25 2018-04-06 北京航天地基工程有限责任公司 Anchor system and slope retaining system
CN112796692A (en) * 2021-04-07 2021-05-14 纬达石油装备有限公司 Prestressed multistage ground anchor and use method thereof
CN214117829U (en) * 2020-11-11 2021-09-03 广州小鹏汽车科技有限公司 Unlocking mechanism and vehicle
WO2022047638A1 (en) * 2020-09-02 2022-03-10 大连理工大学 Multi-anchor point mooring power installation anchor and installation method therefor
CN216920316U (en) * 2022-03-22 2022-07-08 天津市海王星海上工程技术股份有限公司 Anti-pulling type suction anchor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130113009A (en) * 2012-04-05 2013-10-15 삼성중공업 주식회사 Suction pile
CN107031792A (en) * 2017-03-22 2017-08-11 湖北海洋工程装备研究院有限公司 The installation method of the reinforcement device of suction anchor, suction anchor and reinforcement device
CN207193984U (en) * 2017-07-25 2018-04-06 北京航天地基工程有限责任公司 Anchor system and slope retaining system
WO2022047638A1 (en) * 2020-09-02 2022-03-10 大连理工大学 Multi-anchor point mooring power installation anchor and installation method therefor
CN214117829U (en) * 2020-11-11 2021-09-03 广州小鹏汽车科技有限公司 Unlocking mechanism and vehicle
CN112796692A (en) * 2021-04-07 2021-05-14 纬达石油装备有限公司 Prestressed multistage ground anchor and use method thereof
CN216920316U (en) * 2022-03-22 2022-07-08 天津市海王星海上工程技术股份有限公司 Anti-pulling type suction anchor

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