CN112030167A - Method for installing composite cable of newly-built ocean platform - Google Patents
Method for installing composite cable of newly-built ocean platform Download PDFInfo
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- CN112030167A CN112030167A CN202010899571.9A CN202010899571A CN112030167A CN 112030167 A CN112030167 A CN 112030167A CN 202010899571 A CN202010899571 A CN 202010899571A CN 112030167 A CN112030167 A CN 112030167A
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- composite cable
- ocean platform
- tensioning
- fixed
- tension
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- 239000002131 composite material Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004873 anchoring Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 28
- 230000005484 gravity Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/18—Means for supporting electrodes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
- C23F2213/31—Immersed structures, e.g. submarine structures
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention provides a method for installing a composite cable of a newly-built ocean platform, which comprises the following steps: before the ocean platform is launched into water, the anchoring structure is fixed at the bottom of the ocean platform; fixing the tensioning device and the junction box on the top of the ocean platform; connecting the top end and the bottom end of the composite cable fixed with the auxiliary anode and the first reference electrode with a tensioning device and the anchoring structure respectively; leading out the cable core wire at the top end of the composite cable to the inside of the junction box through the wire dividing cover fixed on the cable core wire; the tension force is adjusted through the tension device, so that the composite cable is in a tension state; and installing the ocean platform in a designated sea area. And (4) placing the ocean platform into a fixed sea area. The composite cable tensioning device adopts the lifting lugs and the tensioning devices on the main legs to tension the composite cable, and the lifting lugs are simple in structure and convenient to install, and complete all the tensioning work of the composite cable before the ocean platform enters water, so that the construction steps are reduced, the offshore construction period, the construction cost and the construction difficulty are reduced, and meanwhile, the construction risk is reduced.
Description
Technical Field
The invention relates to the technical field of ocean platform engineering equipment, in particular to a method for installing a composite cable of a newly-built ocean platform.
Background
In the prior art, corrosion state detection and protection of an ocean platform are realized by arranging a composite cable integrating a reference electrode and an auxiliary anode, the composite cable is usually stretched by adopting a tensioning device and a gravity base arranged on the ocean floor, the upper end of the composite cable is connected with the tensioning device, and the lower end of the composite cable is connected with the gravity base.
Disclosure of Invention
The invention provides a method for installing a composite cable of a newly-built ocean platform, which aims to overcome the technical problems.
The invention provides a method for installing a composite cable of a newly-built ocean platform, which comprises the following steps:
s1: before the ocean platform is launched into water, the anchoring structure is fixed at the bottom of the ocean platform;
s2: fixing the tensioning device and the junction box on the top of the ocean platform;
s3: connecting the top end and the bottom end of the composite cable fixed with the auxiliary anode and the first reference electrode with a tensioning device and the anchoring structure respectively;
s4: the cable core wire at the top end of the composite cable is led out to the inside of the junction box through a wire dividing cover fixed on the top of the composite cable;
s5: the tension force is adjusted through the tension device, so that the composite cable is in a tension state;
s6: and installing the ocean platform in a designated sea area.
Further, the anchoring structure is a lifting lug or a clamp, the lifting lug is welded at the bottom of the ocean platform, and the clamp is sleeved at the bottom of the ocean platform.
Further, the step S1 further includes: one end of the rope is fixedly connected with the part of the composite cable under water, and the other end of the rope is fixedly connected with the ocean platform; at least one rope is arranged.
Furthermore, the tensioning device is a lifting lug or a steel wire rope tensioner, and the lifting lug and the steel wire rope tensioner are fixed at the top of the ocean platform and are fixedly connected with the top end of the composite cable.
Further, the tensioning device comprises: the tensioning portal, the tensioning jack, the tensioning steel bar, the locking device, the tension sensor, the D-shaped lock catch and the tensioning anchor chain are sequentially installed on the supporting platform, and the composite cable is connected with the D-shaped lock catch.
Further, the step S1 further includes: and fixing a plurality of second reference electrodes on the main legs or the horizontal rods of the ocean platform.
Further, each lifting lug is connected with the bottom end of at least one composite cable.
The composite cable tensioning device adopts the lifting lugs and the tensioning devices welded on the ocean platform to tension the composite cable, and has the advantages that the anchoring structure is simple in form and convenient to install, all the composite cable tensioning work is completed before the ocean platform enters water, and by reducing the system structure, the installation equipment and the construction steps, the construction steps are reduced while the composite cable tensioning is realized, the offshore construction period, the construction cost and the construction difficulty are reduced, and meanwhile, the construction risk is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1 according to an embodiment of the present invention;
FIG. 3 is an enlarged view of B in FIG. 1 according to an embodiment of the present invention;
FIG. 4 is a schematic view of a support platform according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a method for installing a composite cable of a newly-built ocean platform aiming at the newly-built ocean platform which is not in service, which comprises the following steps:
s1: before the ocean platform is launched into water, firstly, as shown in fig. 3, an anchoring structure is welded at a preset position at the bottom of the ocean platform;
s2: fixing a tensioning device 3 and a junction box 3.8 which are commonly used for tensioning a composite cable of an ocean platform on the top of the ocean platform, namely a supporting platform 1.2, through bolts or other fastening modes;
s3: as shown in fig. 3 and 4, a first cable joint 9 and a second cable joint 10 are respectively fixed at the top end and the bottom end of a composite cable 2 fixed with an auxiliary anode 4, a first reference electrode 5, a sensor or a device such as a current meter or a thermohaline sensor, the first cable joint 9 and the second cable joint 10 are respectively connected with a tensioning device 3 and an anchoring structure, the anchoring structure is a lifting lug or a hoop, the lifting lug is welded on a main leg 1.2 or a horizontal rod member 1.1 at the bottom of an ocean platform, and the hoop is sleeved on the main leg 1.2 or the horizontal rod member 1.1.
S4: the cable core wire at the top end of the composite cable 2 is led out to the inside of the junction box through the wire dividing cover 7 fixed on the cable core wire;
s5: the tension force of the tension device 3 is adjusted to enable the composite cable 2 to be in a tension state, so that the fatigue and interference of the composite cable along with the shaking amplitude of sea waves are reduced;
s6: and the ocean platform is installed in a designated sea area through hoisting equipment.
The tensioning mode of the composite cable in the prior art is as follows: firstly, conveying a gravity foundation to a supporting platform, positioning a position to be put in the gravity foundation by using a remote control unmanned submersible, putting the gravity foundation to a seabed positioning position by using a manual hoist or a hoisting machine, and fixing the bottom end of the composite cable and the gravity foundation by using an underwater robot or artificially submerging into the seabed to stretch the composite cable; the method adopts more large-scale equipment, has complicated construction operation and wastes construction time and construction cost; the composite cable is tensioned by the lifting lugs 6 and the tensioning devices which are welded on the main legs 1.2 or the horizontal rod pieces 1.1, and the lifting lugs 6 are simple in structure and convenient to install, all the composite cable tensioning work is completed before the ocean platform enters water, no offshore operation is performed, and the composite cable tensioning work is performed on the land, so that the construction working condition is better than that of the composite cable tensioning work; positioning and throwing of the gravity block are not needed by an underwater robot; in conclusion, due to the fact that the structure, the equipment and the construction steps are reduced, the construction period is shortened, the composite cable is tensioned, and meanwhile, the construction period, the construction cost and the construction difficulty are reduced.
Further, the step S1 further includes: and respectively welding a plurality of lifting lugs 6 or hoops on a plurality of main legs 1.2 positioned on the periphery of the ocean platform, wherein the plurality of lifting lugs 6 are respectively positioned on the opposite side surfaces of the plurality of main legs 1.2.
As shown in fig. 1, the ocean platform is formed by welding a plurality of vertically arranged main legs 1.2, the main legs 1.2 are metal guide pipes, lifting lugs 6 or hoops are welded on the main legs 1.2 at the periphery of the main legs, and the lifting lugs 6 are respectively positioned on the opposite side surfaces of the main legs 1.2, namely the side surfaces of the main legs 1.2 facing the center of the ocean platform, when wind and waves exist, the composite cables can be prevented from being wound or impacted by foreign matters in seawater due to the protection of the peripheral main legs 1.2 on the composite cables, the service lives of the auxiliary anode 4 and the first reference electrode 5 are prolonged, and the service life of the ocean platform is prolonged.
Further, the step S1 further includes: one end of a rope 8 is fixedly connected with the part of the composite cable 2 under water, and the other end of the rope 8 is fixedly connected with the main leg 1.2 through a lifting lug or a hoop; at least one rope 8 is provided.
In the embodiment, the part of the composite cable 2 under water is fixed on the main leg 1.2 through two ropes 8, the two ropes 8 are on the same straight line, one ends of the two ropes are fixed at the same position of the composite cable through D-shaped lock catches or tensioning anchor chains, the other ends of the two ropes are respectively fixedly connected with the main leg 1.2, when the number of the ropes 8 is three or more, the fixed points on the composite cable are still the same, and the included angles between the fixed points are equal or close; because when the stormy waves are great, the part of the composite cable 2 under water can shake, the detection and protection effects of the first reference electrode 5 and the auxiliary anode 4 on the ocean platform are influenced, the composite cable is enabled to reduce the shake range of the composite cable along with the stormy waves in the horizontal direction by arranging the rope, fatigue and interference are reduced, interference collision with the main leg 1.2 is prevented, and the reliability of the system is further improved.
Furthermore, the tensioning device is a lifting lug or a steel wire rope tensioner, and the lifting lug and the steel wire rope tensioner are fixed at the top of the ocean platform and are fixedly connected with the top end of the composite cable.
Furthermore, a tensioning portal 3.1, a tensioning jack 3.2, a tensioning steel bar 3.3, a locking device 3.4, a tension sensor 3.5, a D-shaped lock catch 3.6 and a tensioning anchor chain 3.7 of the tensioning device are sequentially arranged on the supporting platform 1.2, and the composite cable is connected with the D-shaped lock catch 3.6.
The tensioning device is integrally installed in the above manner (the tensioning device in the embodiment of the present application is the prior art, and the included structures and the connection relationship of the tensioning device are not the invention points of the present application), and according to the structural characteristics of the device, as shown in fig. 2, the tensioning portal 3.1, the tensioning jack 3.2, the tensioning steel bar 3.3, the locking device 3.4, the tension sensor 3.5, the D-shaped lock catch 3.6 and the tensioning anchor chain 3.7 are sequentially installed and fixed, so that the construction efficiency is improved, and the construction time is saved.
Further, in order to better implement the corrosion state monitoring of the ocean platform, that is, the corrosion state monitoring of the main leg 1.2, the step S1 further includes: a plurality of second reference electrodes 11 are fixed on each main leg 1.2 or horizontal bar 1.1.
Further, each of the lifting lugs 6 is connected to the bottom end of at least one composite cable 2.
When every lug links to each other with the bottom of a plurality of composite cable 2, can save land to lug welded time, through reducing system architecture, erection equipment and construction steps, when realizing composite cable stretch-draw, make construction steps reduce, reduced marine construction cycle, construction cost and the construction degree of difficulty, reduce the construction risk simultaneously.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A method for installing a composite cable of a newly-built ocean platform is characterized by comprising the following steps:
s1: before the ocean platform is launched into water, the anchoring structure is fixed at the bottom of the ocean platform;
s2: fixing the tensioning device and the junction box on the top of the ocean platform;
s3: connecting the top end and the bottom end of the composite cable fixed with the auxiliary anode and the first reference electrode with a tensioning device and the anchoring structure respectively;
s4: the cable core wire at the top end of the composite cable is led out to the inside of the junction box through a distributing cover fixed on the composite cable;
s5: the tension force is adjusted through the tension device, so that the composite cable is in a tension state;
s6: and installing the ocean platform in a designated sea area.
2. The installation method according to claim 1, wherein the anchoring structure is a lifting lug or a hoop, the lifting lug is welded on the bottom of the ocean platform, and the hoop is sleeved on the bottom of the ocean platform.
3. The mounting method according to claim 2, wherein the step S1 further includes: one end of the rope is fixedly connected with the part of the composite cable under water, and the other end of the rope is fixedly connected with the ocean platform; at least one rope is arranged.
4. The installation method according to claim 1, wherein the tensioning device is a lifting lug or a wire rope tensioner, and the lifting lug and the wire rope tensioner are fixed on the top of the ocean platform and are fixedly connected with the top end of the composite cable.
5. The installation method of claim 1, wherein the tensioning device comprises: the tensioning portal, the tensioning jack, the tensioning steel bar, the locking device, the tension sensor, the D-shaped lock catch and the tensioning anchor chain are sequentially installed on the supporting platform, and the composite cable is connected with the D-shaped lock catch.
6. The mounting method according to claim 2, wherein the step S1 further includes: and fixing a plurality of second reference electrodes on the main legs or the horizontal rods of the ocean platform.
7. The method of installing as claimed in claim 2 wherein each said lifting lug is connected to the bottom end of at least one composite cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010899571.9A CN112030167A (en) | 2020-08-31 | 2020-08-31 | Method for installing composite cable of newly-built ocean platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010899571.9A CN112030167A (en) | 2020-08-31 | 2020-08-31 | Method for installing composite cable of newly-built ocean platform |
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| Publication Number | Publication Date |
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| CN112030167A true CN112030167A (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010899571.9A Pending CN112030167A (en) | 2020-08-31 | 2020-08-31 | Method for installing composite cable of newly-built ocean platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114784708A (en) * | 2022-04-18 | 2022-07-22 | 大连科迈尔防腐科技有限公司 | Composite cable installation method for newly-built jacket |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107574442A (en) * | 2017-10-13 | 2018-01-12 | 大连科迈尔防腐科技有限公司 | A kind of vertical tensioning fixing device of composite rope |
| CN108286249A (en) * | 2018-01-09 | 2018-07-17 | 大连科迈尔防腐科技有限公司 | A kind of tension type impressed current cathodic protection system and its mounting arrangements method |
| CN109338372A (en) * | 2018-12-12 | 2019-02-15 | 青岛双瑞海洋环境工程股份有限公司 | Ocean platform cathodic protection imitative experimental appliance and method |
-
2020
- 2020-08-31 CN CN202010899571.9A patent/CN112030167A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107574442A (en) * | 2017-10-13 | 2018-01-12 | 大连科迈尔防腐科技有限公司 | A kind of vertical tensioning fixing device of composite rope |
| CN108286249A (en) * | 2018-01-09 | 2018-07-17 | 大连科迈尔防腐科技有限公司 | A kind of tension type impressed current cathodic protection system and its mounting arrangements method |
| CN109338372A (en) * | 2018-12-12 | 2019-02-15 | 青岛双瑞海洋环境工程股份有限公司 | Ocean platform cathodic protection imitative experimental appliance and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114784708A (en) * | 2022-04-18 | 2022-07-22 | 大连科迈尔防腐科技有限公司 | Composite cable installation method for newly-built jacket |
| CN114784708B (en) * | 2022-04-18 | 2022-11-08 | 大连科迈尔防腐科技有限公司 | Composite cable installation method for newly-built jacket |
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Application publication date: 20201204 |
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