KR20160001031U - Mooring chain device using sacrificial anodes and ocean construction including the same - Google Patents

Abstract

Mooring chain devices using a sacrificial anode and an offshore structure comprising the same are disclosed. A mooring chain apparatus using a sacrificial anode according to an embodiment of the present invention includes an upper body attached and fixed to one side of an object to be attached; A lower body rotatably coupled to one side of the upper body and guiding the conveying direction through the chain; A chain stopper that selectively rotates by a plurality of links at one side of the lower body to restrict downward movement of the chain; And at least one of a lower body and a chain stopper is provided with a metal which is more easily ionized than a chain so as to prevent corrosion of the chain, Respectively.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mooring chain device using a sacrificial anode, and a marine structure including the mooring chain device,

The present invention relates to a mooring chain device using a sacrificial anode, and an offshore structure including the same, and more particularly, to a mooring chain device using a sacrificial anode so that corrosion proceeds slowly, and an offshore structure including the same.

Marine structures such as ships, floating products, platforms for drilling or drying, and raw buoys are usually bound at desired locations using chains or cables that are fixed between the hull and the anchors of the seabed.

Typically, the implementation of suspended platform straps involves extending the chain from the seabed anchor to a chain traction device and a chain stop on the deck of the hull via a fairleading device secured to the hull.

Bonding the hull to the drilling location sometimes requires multiple chains, fairleads, anchors, and chain devices due to the large size of the hull. For example, the deck portion of the hull is typically of sufficient size to have one or more buildings that house the crew and the machine, multiple cranes, drilling towers, or limited manufacturing facilities.

Also, the buoyancy of the platform is typically made by a pair of large underwater pontoons. In this structure, some are used to support decks over the bridge, where pillars of 32 feet in diameter are available. As a result of the platform structure being large, a number of fair-lid devices are sometimes secured to each column of the platform, and the strap chain is removed from the anchor and coupled with the chain traction device on the deck via each fair lid device.

The aforementioned chains and mooring structures of ships and offshore structures are usually steel structures and are vulnerable to corrosion. Furthermore, in the case of a mooring chain, the strength could be weakened by corrosion because it was piled up, stored and tangled with each other.

1, an embodiment of a conventional mooring device for a studless chain of a marine structure includes a structure for selectively limiting the movement of an object to be attached, for example, a chain C fixedly attached to an outer wall of a ship and provided from a towing device Lt; / RTI >

The chain mooring device 10 is configured to simultaneously perform the role of guiding the movement direction of the chain C connected to the pulling device. To this end, the chain mooring device 10 includes an upper body 12 fixedly attached to one side of an object to be mounted, a lower body 12 rotatably coupled to one side of the upper body 12, A chain stopper 16 that selectively rotates by a plurality of links at one side of the lower body 14 to limit the downward movement of the chain C and a chain stopper 16 that extends from one side of the lower body 14 to the lower side of the lower body 14, And a protective cover (18) for blocking the inflow of foreign matter into the body (14).

In such a structure of a conventional mooring structure for a studless chain of a marine structure, a chain stopper and a lower structure are constructed in an open structure. Since the mooring equipment is generally close to the sea surface, it is directly exposed to a corrosive environment. Therefore, the deterioration of the fatigue durability of the upper tower chain due to the corrosion effect of the mooring chain and the inhomogeneous contact surface will adversely affect the out-of-plane bending (OPB) and in-plane bending .

Korean Patent Application No. 10-2014-2200

One embodiment of the present invention is to provide a mooring chain device using a sacrificial anode in which a sacrificial anode is used to improve the strength of the mooring line so that erosion can occur slowly, and an offshore structure comprising the same.

According to an aspect of the present invention, there is provided an electronic device comprising: an upper body attached and fixed to one side of an object to be attached; A lower body rotatably coupled to one side of the upper body and guiding a conveying direction through the chain; A chain stopper selectively rotated by a plurality of links at one side of the lower body to restrict downward movement of the chain; And at least one of the lower body and the chain stopper is provided with a metal that is more ionized than the chain, and prevents corrosion of the chain. A mooring chain device using a sacrificial anode to which a sacrificial anode can be attached can be provided.

According to another aspect of the present invention, there is provided a mooring apparatus comprising: a mooring body; A winch unit disposed on one side of the mooring main body and adapted to wind and unwind the wire; A mobile block unit movably coupled to the mooring main body to be moved up and down by the wire, the mobile block unit being disposed so that the chain is movable inward; And a chain stopper unit disposed at a lower portion of the mobile block unit and capable of adjusting movement of the chain while being held by the chain, wherein the chain stopper unit is provided with a metal that is more ionizable than the chain, It is possible to provide a mooring chain device using a sacrificial anode to which a sacrificial anode capable of preventing the sacrificial anode is attached.

According to yet another aspect of the present invention, there is provided an internal turret body comprising: an internal turret body adapted to select one or more of the chains; A chain table unit arranged to connect wires corresponding to the chains so as to select one of the chains in the inner turret body, and to selectively actuate at least one of the wires to selectively operate the chains; And the wires may be provided with a mooring chain device using a sacrificial anode having a sacrificial anode provided with a metal that is more ionizable than the chain and capable of preventing corrosion of the chain.

Wherein the chain stopper unit is provided with a metal which is more easily ionized than the chain so as to prevent corrosion of the chain, the chain stopper unit being provided on the outer side of the hull so as to restrict movement of the chain, An anode may be attached.

According to another aspect of the present invention, an offshore structure including a mooring chain device using the above-described sacrificial anode may be provided.

According to one embodiment of the present invention, it is possible to provide a mooring chain device using a sacrificial anode that can improve the strength of a mooring line by using a sacrificial anode so that erosion can occur slowly, and an offshore structure including the same.

1 is a front view of a conventional mooring chain device.
Figure 2 is a front view of a mooring chain device using a sacrificial anode according to one embodiment of the present invention.
3 is a perspective view of a mooring chain device using a sacrificial anode according to another embodiment of the present invention;
4 is a perspective view of a mooring chain device using a sacrificial anode according to another embodiment of the present invention;
5 is a perspective view of a pair lead chain stopper unit according to another embodiment of the present invention.

Various embodiments of the present invention will now be described by way of specific embodiments shown in the accompanying drawings. The differences in the embodiments of the present invention described below are to be understood as mutually exclusive. That is, the specific shapes, structures, and characteristics described may be implemented in other embodiments in accordance with one embodiment, without departing from the spirit and scope of the present invention, It is to be understood that the arrangement may be altered, where like reference numerals refer to like or similar features throughout the several views, and length and area, thickness, and the like, and their shapes may be exaggerated for convenience.

2, the mooring chain apparatus 10 using the sacrificial anode (a) according to an embodiment of the present invention includes an upper body 12 fixedly attached to one side of an object to be mounted, A lower body 14 rotatably coupled to one side of the lower body 14 and guiding a conveying direction of the chain by passing the chain therethrough and a lower body 14 selectively rotated by a plurality of links at one side of the lower body 14, And at least one of a lower body (14) and a chain stopper (16) includes a chain stopper (16) for blocking the flow of foreign matter into the lower body (14) One is provided with a sacrificial anode (a) which is made of a metal that is ionized more than the chain and can prevent corrosion of the chain.

According to this embodiment, the sacrificial anode (a) is attached to any one or both of the lower body (14) and the chain stopper (16) disposed in the movement path of the chain, so that the sacrificial anode Thereby preventing corrosion of the chain. Accordingly, the sacrificial anode (a) can be used to improve the overall strength of the mooring line so that the chain according to the present embodiment can cause the corrosion to occur slowly.

3, a mooring chain device using a sacrificial anode (a) according to another embodiment of the present invention includes a mooring body 100, A moving block unit 115 movably coupled to the mooring main body 100 so as to be moved up and down by a wire and disposed so as to be movable in the chain, And a chain stopper unit 120 disposed at a lower portion of the unit 115 and capable of adjusting the movement of the chain while being held by the chain. The chain stopper unit 120 is provided with a metal that is more ionized than the chain, A sacrificial anode (a) is attached.

The mooring chain device according to this another embodiment is an external turret capable of restricting the movement of the chain. The chain stopper unit 120, which can limit the movement of the chain in the movement path of the chain, a) is applied so that the sacrificial anode (a) is consumed in place of the corrosion of the chain, thereby preventing the corrosion of the chain. As a result, the strength of the overall mooring line can be improved as the life of the chain as a whole is prolonged.

As shown in FIG. 4, the mooring chain apparatus using the sacrificial anode (a) according to another embodiment of the present invention includes an inner turret body 200 provided to be capable of selecting one or more operations of the chains, A plurality of wires 215 are arranged corresponding to the chains so that one of the chains can be selected in the inner turret body 200 and a chain table The unit 210 and the wires 215 may be provided with a sacrificial anode (a) which is made of a metal that is ionized more than the chain and can prevent corrosion of the chain.

The mooring chain device according to this another embodiment is characterized in that a sacrificial anode (a) is applied to the wires (215) connected to one end of the chain as an internal turret capable of selecting the operation of the chain, Likewise, it is possible to prevent the corrosion of the chain, and thus the strength of the overall mooring line can be improved as the overall service life of the chain becomes longer.

5, the mooring chain according to another embodiment further includes a pair of lead chain stopper units 230 disposed outside the hull to limit movement of the chain, The chain stopper unit 230 may be provided with a sacrificial anode (a) which is made of a metal that is more ionized than the chain and can prevent corrosion of the chain.

Accordingly, the chain passing through the pair lead chain stopper unit 230 can be prevented from being corroded by the sacrificial anode (a) applied thereto, so that the strength of the overall mooring line can be improved have.

According to one embodiment of the present invention, an offshore structure including a mooring chain device using the above-described sacrificial anode (a) may be provided. Such an offshore structure is protected by a mooring line which is generally improved in strength as the lifetime of the chain is prolonged by preventing the corrosion of the chain by applying the sacrificial anode (a) to the movement path of the chain or the member or contacted region connected to the chain Mooring can be carried out.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Deletion, addition or the like of the present invention may be variously modified and changed, and this also falls within the scope of the present invention.

a: sacrificial anode
100: mooring body
110: winch unit
115: mobile block unit
120: Chain stopper unit

Claims (5)

An upper body attached and fixed to one side of an object to be attached;
A lower body rotatably coupled to one side of the upper body and guiding a conveying direction through the chain;
A chain stopper selectively rotated by a plurality of links at one side of the lower body to restrict downward movement of the chain; And
And a protective cover for blocking inflow of foreign matter from one side of the lower body to the inside of the lower body,
Wherein the sacrificial anode is attached to at least one of the lower body and the chain stopper so as to prevent corrosion of the chain, the sacrificial anode being made of a metal that is ionized more than the chain. Mooring body;
A winch unit disposed on one side of the mooring main body and adapted to wind and unwind the wire;
A mobile block unit movably coupled to the mooring main body to be moved up and down by the wire, the mobile block unit being disposed so that the chain is movable inward; And
And a chain stopper unit disposed at a lower portion of the mobile block unit and capable of adjusting the movement of the chain while holding the chain,
Wherein the chain stopper unit is provided with a metal which is more easily ionized than the chain, and a sacrificial anode to which a sacrificial anode capable of preventing corrosion of the chain is attached is used. An inner turret body adapted to select operation of one or more of the chains;
A chain table unit arranged to connect wires corresponding to the chains so as to select one of the chains in the inner turret body, and to selectively actuate at least one of the wires to selectively operate the chains; And
Wherein the wires are provided with a metal that is more easily ionized than the chain, and a sacrificial anode to which a sacrificial anode capable of preventing corrosion of the chain is attached is used. The method of claim 3,
Further comprising a pair of lead chain stopper units disposed outside the hull so as to limit movement of the chain,
Wherein the chain stopper unit is provided with a metal which is more easily ionized than the chain, and a sacrificial anode to which a sacrificial anode capable of preventing corrosion of the chain is attached is used. An offshore structure comprising a mooring chain device using the sacrificial anode according to any one of claims 1 to 4.

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