KR20150054465A - A anode install structure of offshore structure - Google Patents

A anode install structure of offshore structure Download PDF

Info

Publication number
KR20150054465A
KR20150054465A KR1020130136938A KR20130136938A KR20150054465A KR 20150054465 A KR20150054465 A KR 20150054465A KR 1020130136938 A KR1020130136938 A KR 1020130136938A KR 20130136938 A KR20130136938 A KR 20130136938A KR 20150054465 A KR20150054465 A KR 20150054465A
Authority
KR
South Korea
Prior art keywords
anode
coupling hole
power supply
insulating member
water
Prior art date
Application number
KR1020130136938A
Other languages
Korean (ko)
Inventor
김승관
Original Assignee
현대중공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020130136938A priority Critical patent/KR20150054465A/en
Publication of KR20150054465A publication Critical patent/KR20150054465A/en

Links

Images

Classifications

    • 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
    • E02B17/0017—Means for protecting offshore constructions
    • E02B17/0026—Means for protecting offshore constructions against corrosion
    • 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
    • E02B17/0034—Maintenance, repair or inspection of offshore constructions
    • 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
    • E02B2017/0056—Platforms with supporting legs

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Revetment (AREA)

Abstract

The present invention relates to an anode installation structure of an offshore structure, and more particularly, to an anode installation structure of an offshore structure that prevents an anode from flowing due to an external environment, .
For this purpose, a power supply comprises: a steel structure which is composed of an underwater portion which is submersed in the sea and is submerged in the sea, an exposed portion which is formed above the water portion and exposed above the water surface, An anode which is fixed to one side of the insulating member and forms a coupling hole penetrating in the upward and downward directions, an anode inserted in the coupling hole of the insulating member and receiving a positive (+) polarity current from the power supply, And a supporting wire connected between the supporting portions to support the anode so that the anode does not fall downward.

Description

[0001] The present invention relates to an anode installation structure of an offshore structure,

The present invention relates to an anode installation structure of an offshore structure, and more particularly, to an anode installation structure of an offshore structure that prevents an anode from flowing due to a marine environment and improves convenience for maintenance work of an anode.

Generally, marine structures such as iron structures and concrete structures as well as ships exposed to the marine environment are rapidly corroded by the chloride ions and dissolved oxygen contained in seawater.

In order to prevent such corrosion, paints such as paints are painted several times on the surface of a ship or an offshore structure.

However, local damage is inevitable over time even with excellent paint, and galvanic corrosion is caused by the potential difference between dissimilar metals.

In order to compensate for the lack of the corrosion preventive method by the paint, as shown in FIG. 1, a negative electrode (cathode) is formed by sacrificial anode which attaches the sacrificial anode 20 to the main portion of the outer plate of the marine structure 10 Protection law was created.

Cathodic protection is a sacrificial anode made of zinc, aluminum, or magnesium, which prevents corrosion by causing a negative electrode reaction to occur on a metal surface when a DC current (a direct current) (20) is used to artificially introduce direct current into the surface of the offshore structure.

However, zinc anodes and aluminum anodes, which are mainly used in the cathodic protection method, are consumed naturally when a certain period of time has elapsed, resulting in troubles such as replacement at regular intervals and high cost. Respectively.

Therefore, in order to solve the above-mentioned problem, there is a need for a facility capable of replacing the sacrificial anode system. In recent years, there has been proposed a method of replacing a sacrificial anode of a DC power source with a metal having relatively low activity such as platinum, platinum- And an impressed current cathodic protection method is used in which a current is forcibly applied in connection with the current.

That is, development of cathodic protection equipment that can be used semi-permanently without the necessity of exchanging the sacrificial anode has been urgently required, and an Impressed Current Cathodic Protection (ICC P) system has appeared will be.

In the forced current application system, an anode for generating a positive electrode is provided by receiving power supplied from a power supply unit, and a negative electrode of a power supply unit is provided for an iron structure of an offshore structure.

In this case, the amount of current flowing influences the potential difference between the anode structure and the anode structure in the seawater. The installed anode senses the current and transfers it to the power supply unit. The power supply unit again supplies the ideal method potential level It keeps constantly adjusting and maintaining current continuously to maintain.

That is, the forced current application system is a principle to prevent the corrosion of offshore structures by controlling the amount of current to flow the appropriate current to maintain the appropriate method potential level.

In this forced current application system, as shown in FIG. 2, the anode 20 is suspended and submerged in water. In order to prevent the anode 20 from flowing due to algae and storm, And the weight 30 is installed.

That is, the weight 30 functions to prevent a short circuit due to the contact between the iron structure 10 and the anode 20 by suppressing the flow of the cable in which the anode 20 is installed due to the marine environment.

As a result, the cable can be lifted up for maintenance work on the anode 20, so that the maintenance work on the anode 20 can be performed, and the anode 20 can be easily replaced.

However, even if the weight 30 is provided, it is difficult to prevent the cable from flowing when a strong storm occurs.

Accordingly, it is difficult to completely block the contact between the iron structure 10 and the anode 20. [

In order to prevent such a problem, the anode 20 is fixed to one side of the steel structure 10 as shown in FIG.

At this time, an insulation material 40 is provided between the anode 20 and the steel structure 10 to prevent short-circuiting. As the anode 20 is fixed to the steel structure 10 as described above, So that no short circuit due to contact with the steel structure 10 is caused.

However, although the above-described method has an advantage that no short-circuiting occurs between the anode 20 and the steel structure 10, there is a problem that the diver has to directly submerged for maintenance work for removing moss after a long time there was.

This has caused troublesome work, and there has been a problem of deteriorating workability.

Korea Registration No. 10-0488580 Korea Registration No. 10-0421822 Korea Registration No. 10-0488580

SUMMARY OF THE INVENTION It is an object of the present invention to prevent an anode from flowing due to a marine environment and to prevent a short circuit with an iron structure, And to provide an anode installation structure of an offshore structure that can easily lift an anode on the water.

In order to achieve the above-mentioned object, the present invention provides a power supply apparatus comprising: a power supply unit including a water tank, which is submerged in the sea, and an exposed unit that is formed above the water tank, An insulating member which is fixed to one side of the water-receiving portion and forms an engaging hole penetrating in an upward and downward direction, an inserting member inserted into the engaging hole of the inserting member, and receiving a positive (+ An anode, and a support wire connected between the anode and the exposed portion to support the anode so that the anode does not fall downward.

At this time, it is preferable that a stopper having a diameter larger than the diameter of the coupling hole is provided around the anode, and the anode is excessively dropped downward through the coupling hole.

It is also preferable that the exposed portion is provided with a shear with the restoring wire wound thereon, and the restoring wire is connected to the lower end of the anode disposed in the water by being unwound downward.

It is preferable that a hook is provided on the exposed portion, and a hook is hooked on the hook at the upper end of the supporting wire.

In addition, it is preferable that a hoist is further provided to the downward portion of the anode in the water level portion so that the restoration wire is guided to the lower end portion of the anode.

The anode installation structure of an offshore structure according to the present invention has the following effects.

First, since the anode is inserted and fixed in the coupling hole of the insulating member fixed to the steel structure, the anode does not flow even if a strong current is generated.

Particularly, since the lower end portion of the anode inserted into the coupling hole is supported by the restoring wire wound around the pulley of the exposed portion, which is the upper portion of the steel structure, the anode is not separated from the coupling hole.

That is, the anode and the support wire are caused to flow by the strong storm, or the anode fixed to the insulating member does not flow.

Accordingly, there is an effect that a shot due to contact between the anode and the steel structure does not occur.

Second, maintenance work on the anode is convenient.

In other words, since the supporting wire connected to the upper part of the anode can be pulled upward and lifted up to the exposed part of the steel structure, the anode can be easily restored by using the winding of the restoring wire after performing maintenance such as removal of moss It is.

Accordingly, there is no need for the diver to directly perform the maintenance work for the anode, so that the workability for the maintenance work for the anode can be enhanced.

FIG. 1 is a side view showing a state where a plurality of sacrificial anodes (anodes) are installed on an iron structure constituting an offshore structure by a cathodic protection method according to the related art
FIG. 2 is a side view showing a state in which a sacrificial anode is suspended in water by a forced current application method according to the related art
FIG. 3 is a perspective view showing a state in which a sacrificial anode is fixed to a steel structure constituting an offshore structure by a forced current application method according to the related art.
4 is a side view showing an anode installation structure of an offshore structure according to a forced current application method according to a preferred embodiment of the present invention
Fig. 5 is an exploded perspective view of the "A &
6 is a side view showing an anode lifted in an anode installation structure of an offshore structure according to a forced current application method according to a preferred embodiment of the present invention;

It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term in order to describe its invention in the best possible way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

Hereinafter, an anode installation structure of an offshore structure according to a preferred embodiment of the present invention will be described with reference to FIGS. 4 to 6 attached hereto.

The anode installation structure of the offshore structure has a technical feature that prevents the anode from flowing and facilitates the maintenance work on the anode.

As a result, it is possible to prevent a short circuit due to contact between the anode and the steel structure, and to improve the operability of the anode maintenance work.

The anode installation structure of the offshore structure includes an electric power supply unit 100, an iron structure 200, an insulating member 300, an anode 400, a support wire 500, a pulley 600, And a wire 700.

The power supply unit 100 supplies current to the anode 400 and the steel structure 200 and is installed on one side of the offshore structure.

The power supply unit 100 supplies a positive electrode (+ pole) to the anode 400 and a negative electrode (- pole) to the steel structure 200.

Next, the iron structure 200 constitutes an offshore structure and is a portion supported by the seabed.

At this time, the iron structure 200 does not necessarily mean a structure that is embedded in the seabed, but refers to all structures exposed to the marine environment.

The steel structure 200 includes a water part 210 that is submerged in water and an exposed part 220 that is exposed upward from the sea water surface.

That is, the water portion 210 is always in the sea and the exposed portion 220 is exposed in the sea.

At this time, it is preferable that a plurality of guide members 230 are installed in the steel structure 200 in the height direction of the steel structure 200.

This is to guide the winding action of the restoration wire 700 to be described later.

The steel structure 200 is provided with a cable between the power supply unit 100 and the steel structure 200 so that a negative (- pole) current is supplied from the power supply unit 100.

Next, the insulating member 300 is configured to mount the anode 400, and is fixed to the steel structure 200.

At this time, the insulating member 300 is always fixed to the water part 210 immersed in seawater.

The insulating member 300 is fixed to the steel structure 200 through welding or the like when the steel structure 200 is manufactured.

A coupling hole 310 for coupling the anode 400 is formed on one side of the insulating member 300.

The coupling hole 310 is formed in one side of the insulating member 300 so as to penetrate in the upward and downward directions.

The diameter of the coupling hole 310 is preferably such that the anode 400 can smoothly flow upward and downward.

The insulating member 30 is made of a material that does not allow electricity to pass through, as the name suggests.

This can be understood in consideration of the configuration in which the anode 400 to which the positive current of the power supply unit 100 is supplied is provided.

Next, the anode 400 continuously and continuously outputs the anode current so as to maintain the ideal method potential level in order to prevent corrosion of the steel structure 200 of the offshore structure.

The anode 400 is inserted and fixed in the coupling hole 310 of the insulating member 300 and is formed to have a diameter corresponding to the diameter of the coupling hole 310.

That is, the anode 400 is formed in a cylindrical shape, and is formed so as to smoothly flow upward and downward through the coupling hole 310.

At this time, it is preferable that a stopper 410 is further installed around the anode 400.

The stopper 410 serves to prevent the anode 400 from dropping downward through the coupling hole 310 and to set the position of the anode 400 in the insulating member 300.

The stopper 410 is fixed around the anode 400 and is formed to have a diameter larger than the diameter of the coupling hole 310.

Accordingly, the stopper 410 is seated around the coupling hole 310 of the insulating member 300 to restrict the excessive falling of the anode 400.

Meanwhile, the anode 400 is provided with a cable C for receiving a positive current from the power supply unit 100.

Next, the support wire 500 pulls up the anode 400 disposed in the water, and is connected between the upper end of the anode 400 and the exposed portion 220 of the steel structure 200.

At this time, a hooking ring 221 is installed on one side of the exposed portion 220 of the steel structure 200 and a hook 510 is provided on the upper end of the supporting wire 500 to be engaged with the hooking ring 221 .

The pulley 600 is provided for installation of a restoration wire 700 to be described later and installed in the exposed portion 220 of the steel structure 200 and the water portion 210 of the steel structure 200 respectively.

For convenience of explanation, the pulley provided in the exposed portion 220 is referred to as a first sheave 610, and the sheave provided in the water portion 210 is referred to as a second sheave 620. [

The restoration wire 700 restores the position of the anode 400 lifted above the water surface and is wound on the first sheave 610 and then guided through the guide member 230 to the second sheave 610. [ 620 to the lower end of the anode 400.

Accordingly, when the anode 400 is lifted up, the restoration wire 700 is loosened through the first sheave 610 and the first sheave 610 is rotated By winding the wire 700, the anode 400 can be lowered and returned to the insulating member 300.

Hereinafter, the operation of the anode installation structure of the marine structure constructed as described above will be described.

The anode cable C of the power supply unit 100 is connected to the steel structure 200 constituting the offshore structure and the anode cable C of the power supply unit 100 is connected to the anode 400. [

Then, the anode 400 is inserted into the coupling hole 310 of the insulating member 300 fixed to the water 210 of the steel structure 200.

At this time, since the stopper 410 of the anode 400 is seated on the insulating member 300, the anode 400 is no longer dropped through the coupling hole 310.

Thereafter, the hook 510 of the support wire 500 is hooked on the hooking ring 221 of the exposed portion 220, and the first sheave 610 is rotated to cause the restoring wire 700 to rotate the anode 400, To pull it downward and fix it.

As the installation of the anode 400 is completed, the anode 400 is prevented from flowing due to strong currents and storms.

After a long time has elapsed since the installation of the anode 400, maintenance work on the anode 400 is required.

Particularly, a moss removal operation is performed on the anode 400. To this end, the anode 400 in the water is lifted and placed on the exposed portion 220 of the steel structure 200.

To this end, the hook 510 hooked on the hooking ring 221 is pulled up to raise the supporting wire 500.

At this time, the anode 400 is lifted away from the coupling hole 310 of the insulating member 300, and the restoration wire 700 is lifted from the first pulley 610 to follow the anode 400 It comes.

Thereafter, a series of maintenance work is performed on the anode 400 disposed in the exposed portion 220 of the steel structure 200.

Thereafter, when the maintenance work for the anode 400 is completed, the support wire 500 is held and the anode 400 is lowered to the water.

At this time, the first sheave 610 is rotated to wind the recovered restoration wire 700.

Thereafter, the anode 400 is inserted into the coupling hole 310 of the insulating member 300, but the stopper 410 is not lowered further because it is seated on the upper surface of the insulating member 300.

Thereafter, when the anode 400 is retracted, the hook 510 of the supporting wire 500 is hooked on the hooking ring 221, and the first sheave 610 is rotated to rotate the restoring wire 700, (400) is pulled and brought into close contact with the insulating member (300).

This completes the maintenance work of the anode using the anode installation structure of the offshore structure.

As described above, the anode installation structure of the offshore structure according to the present invention is characterized in that the anode structure is firmly fixed to the water structure of the steel structure, and a series of processes for lifting the anode from the water are made convenient .

Accordingly, convenience for the maintenance work for the anode can be improved, and workability can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art.

100: Power supply unit 200: Steel structure
210: water middle 220: exposed part
221: Retaining ring 230: Guide member
300: Insulating member 310: Coupling ball
400: anode 410: stopper
500: support wire 510: hook
600: Pulley 610: 1st pulley
620: 2nd pulley 700: Restore wire
C: Cable

Claims (5)

Power supply;
A steel structure which is submerged in the sea and is supported by the sea floor, and an exposed part exposed above the water surface and exposed to the water, and receives negative (- polar) current from the power supply;
An insulating member which is fixed to one side of the water column and forms an engaging hole penetrating in an upward and downward direction;
An anode inserted into the coupling hole of the insulating member and receiving a positive (+) polarity current from the power supply;
And a support wire connected between the anode and the exposed portion to support the anode so that the anode does not fall downward. The method according to claim 1,
Wherein a stopper having a diameter larger than the diameter of the coupling hole is provided around the anode to prevent the anode from being excessively dropped downward through the coupling hole. 3. The method according to claim 1 or 2,
Wherein the exposed portion is provided with a sheave on which the restoration wire is wound, and the restoration wire is connected to the lower end portion of the anode disposed in the water. 3. The method according to claim 1 or 2,
Wherein a hook is provided on the exposed portion and a hook is provided on an upper end portion of the support wire to be hooked on the hook. 3. The method according to claim 1 or 2,
And the restoration wire is guided to the lower end of the anode by installing a pulley at a lower portion of the anode at the middle portion.




KR1020130136938A 2013-11-12 2013-11-12 A anode install structure of offshore structure KR20150054465A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020130136938A KR20150054465A (en) 2013-11-12 2013-11-12 A anode install structure of offshore structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130136938A KR20150054465A (en) 2013-11-12 2013-11-12 A anode install structure of offshore structure

Publications (1)

Publication Number Publication Date
KR20150054465A true KR20150054465A (en) 2015-05-20

Family

ID=53390610

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020130136938A KR20150054465A (en) 2013-11-12 2013-11-12 A anode install structure of offshore structure

Country Status (1)

Country Link
KR (1) KR20150054465A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200038679A (en) 2018-10-04 2020-04-14 대우조선해양 주식회사 Sacrificial anode device for protecting floating offshore structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200038679A (en) 2018-10-04 2020-04-14 대우조선해양 주식회사 Sacrificial anode device for protecting floating offshore structure

Similar Documents

Publication Publication Date Title
CN101492821B (en) Anticorrosion method employing metallic oxide anode
US6346188B1 (en) Battery-powered cathodic protection system
US9086049B2 (en) Power generating equipment
EP2300638B1 (en) A marine surface vessel and a method for a sacrificial anode in a marine construction
JP2020529515A (en) Cathode corrosion protection for steel support structures of offshore wind turbines
CN201722427U (en) Jacket impressed current cathode protection device
CN112281164A (en) Stretching impressed current cathodic protection device and use method thereof
KR20150054465A (en) A anode install structure of offshore structure
CN102277578A (en) ICCP (impressed current cathodic protection) method of leg type platform
CN212894989U (en) Impressed current cathodic protection system of marine wind power foundation steel pile inner wall
CN109338374B (en) Cathode protection device
CN205473997U (en) From peaceful platform spud leg impressed current protection system with adjustable
EP3594411A2 (en) Anode structure for an offshore foundation, and a method of reducing corrosion in an offshore foundation
KR101347707B1 (en) Hybrid type cathode protection system sacrificial anode type cathode protection technologies for marine concrete structure
US10287691B2 (en) Anode assembly for cathodic protection of offshore steel piles
CN217174898U (en) Corrosion-resistant offshore wind power foundation
CN114717563A (en) FPSO external anti-corrosion device
CN212426183U (en) Jacket fixed impressed current cathodic protection device
CN108624887B (en) Sacrificial anode clamp for permanently moored steel cable joint
JP5167863B2 (en) Anode for forming anticorrosion electrodeposition coating on steel structure
CN207904371U (en) The impressed current and sacrificial anode Combined Protection device of jacket platform
CN112048723A (en) Cathode protection device for deep sea
CN219297647U (en) Temporary cathode protection system for offshore wind power
RU2768061C1 (en) Method for installation of underwater anodes for cathodic protection of underwater objects
EP4134470A1 (en) Gravity-contact sacrificial anode

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination