KR101606696B1 - Maintenance system of thruster motor and method using the same - Google Patents

Abstract

In order to maintain the first thruster motor installed in the thruster room, a guide rail is formed on the upper deck of the residence, and the guide rail is provided with a lifting unit. The lower deck of the residence is supported by the lifting unit The first thruster motor can be smoothly maintained without requiring the first cargo hold deck crane during the maintenance work of the first thruster motor by extending the fixed platform for holding the first thruster motor carried therein The safety and convenience of the crew can be improved during the maintenance work of the first thruster motor. In addition, it is possible to further shorten the work interruption period due to the maintenance and repair of the first thruster motor, and to improve the competitiveness and reliability of the drill rig.

Description

Technical Field [0001] The present invention relates to a thruster motor maintenance system for a drill ship, and a thruster motor maintenance method using the thruster motor maintenance system.

The present invention relates to a thruster motor maintenance system for a drill ship and a thruster motor maintenance method using the thruster motor maintenance system. More particularly, the present invention relates to a thruster motor maintenance system for a drill ship, The present invention relates to a thruster motor maintenance system of a drill ship capable of smoothly maintaining a first thruster motor by constructing a monorail system and a thruster motor maintenance method using the system.

In general, drill ship is a ship equipped with equipment for drilling raw oil or gas from the ocean, which is also called a drill ship, and it is capable of collecting crude oil or gas in deep sea area where sea platform can not be installed or in the sea where waves are severe.

Exploration for new oil fields in the world petroleum industry is increasingly demanding an oil or gas layer in an environment that includes deep sea. As the depth of ocean excavation deepens, the amount of equipment required for excavation work is increasing as the number of subsea facilities required to extend the well holes to the sea surface increases.

The drill ship's work to mining oil or gas resources from the sea involves horizontally moving the riser pipes to the drill floor and then using Derrick to erect them down the seabed well.

In order to handle the drill pipe and the riser pipe, a plurality of cargo hold deck cranes are installed on the deck of the drip ship. In the forward side of the drill ship, a first cargo hold deck crane and a second cargo hold Deck crane is installed.

A third cargo hold deck crane and a fourth cargo hold deck crane are installed at the stern side of the drill ship to transport the riser pipe.

The first cargo hold deck cranes and the second cargo hold deck cranes, and the third cargo hold deck cranes and the fourth cargo hold deck cranes are arranged in zigzags.

On the other hand, a dynamic positioning control system is installed in the drill ship to cope with a change in position due to swinging of the hull due to algae, wind direction, wind speed, and wave height. A mooring system for constant anchoring, or an azimuth thruster that rotates 360 ° in seawater while propelling and rotating, or generating propulsive forces in the lateral direction to control the self-position of the hull.

An omnidirectional propulsion unit (hereinafter referred to as a thruster), which is one of the magnetic position control units, is installed in a thruster room formed on a drill ship and includes an underwater unit including a propeller, a receptacle, .

The thruster motor is specified to be subjected to a performance test, and maintenance of the thruster motor is performed for repair in case of failure.

FIG. 1 is a plan view showing a cargo hold deck crane arrangement of a conventional drill ship, FIG. 2 is a vertical sectional view illustrating maintenance of a conventional thruster motor, and FIG. 3 is a side view showing a conventional portable table.

Referring to FIG. 1, first and second cargo hold deck cranes 10 and 20 for handling drill pipes 1 are disposed at both sides of a bow side of a conventional drip ship, Third and fourth cargo hold deck cranes 30 and 40 for handling the riser pipes 2 are disposed at both ends of the stern side of the vehicle.

The first cargo hold deck cranes 10 and the second cargo hold deck cranes 20 and the third cargo hold deck cranes 30 and the fourth cargo hold deck cranes 40 are arranged in a zigzag manner, 1) and the riser pipe (2).

The helideck 3 is provided with a hatch 4 for maintenance and repair of the first thruster motor 51 (see FIG. 2) of the first thruster 50, which is a forward thruster, The deck crane 10 is configured for use in the first thruster motor maintenance operation of the first thruster 50 as well as handling the drill pipe 1.

Referring to FIGS. 2 and 3, a conventional thruster room R is vertically formed in a conventional drill ship, and a first thruster 50 is installed in the first thruster room R.

The first thruster motor 51 is pulled up by using the first cargo hold deck crane 10 for the maintenance of the first thruster motor 51 and a separate portable table 60 provided on the B deck is used, And the first thruster motor 51 is placed thereon.

After the portable table 50 is moved to the side of the drill ship, the first thruster motor 51 is carried to an external inspection site of the drill ship using an external crane (not shown).

However, in the conventional arrangement of the first cargo hold deck crane, the working radius of the first cargo hold deck crane is insufficient, so that it is impossible to handle the drill pipe mounted on the rear port edge of the drill ship, , The working radius of the fourth cargo hold deck crane is not enough to handle the riser pipe loaded at the front end of the drill ship.

It is also conceivable to simply extend the arm length of the cargo hold deck crane in order to overcome this impossibility of handling, but this can cause problems, such as interference and collision between cargo hold deck crane arms, (Deck house). Therefore, there is a risk of maintenance, and there is a risk that it is dangerous to work even if maintenance is performed using a separate CCTV.

Therefore, it is possible to assume that the first cargo hold deck crane is moved to the stern side of the drill ship and the fourth cargo hold deck crane is moved to the forward side of the drill ship in order to solve the inability to handle the drill pipe and the riser pipe .

By thus moving the first cargo hold deck crane and the fourth cargo hold deck crane respectively to the aft side and the forward side of the drill ship, the drill pipe can be handled on the rear port edge of the drill ship, At the starboard end, handling of the loaded riser pipe can be enabled.

However, when the first cargo hold deck cranes and the fourth cargo hold deck cranes are moved to the stern side and the bow side, maintenance and repair of the first thruster motor are accompanied by a great deal of restriction.

That is, moving and relocating the first cargo hold deck crane to the stern side may cause a problem that the first cargo hold deck crane can not be used during the maintenance work of the first thruster motor.

Korean Laid-Open Publication No. 10-2009-0032618

In order to solve the above-described problems, the present invention provides a method for installing a first thruster motor, which includes a guide rail extending from an upper deck of a residence, a lifting unit installed on a guide rail, and a first thruster motor carried by a lifting unit, The drill shaft of the thruster motor can be smoothly maintained without using the first cargo hold deck crane during maintenance work of the first thruster motor, Maintenance system and a method of maintaining a thruster motor using the system.

In order to achieve the above object, a drill ship's thruster motor maintenance system according to the present invention includes a guide rail formed on an upper deck of a residence for maintenance of a first thruster motor installed in a thruster room, The rail is provided with a lifting unit, and a fixed platform for holding the first thruster motor carried by the lifting unit is extended to the lower deck of the housing.

The upper deck includes a deck of either the D deck or the E deck of the dwelling unit, and the lower deck includes a deck of either the A deck or the B deck of the dwelling unit.

The guide rail may extend in the width direction of the hull.

The fixed platform may be provided with a connection platform for maintenance of the life boat.

And the first thruster motor is placed on the lower deck to utilize the space above the main deck of the hull.

The stationary platform may be provided with a seating hole through which the first thrustor motor is inserted and fixed and can be tested (maintained).

The fixed platform includes at least one of an air conditioning vent maintenance area, the first thruster motor maintenance area, and a boarding station / life boat maintenance area.

The lifting unit includes a hoist device.

According to another aspect of the present invention, there is provided a method of maintaining a thruster motor, comprising: lifting a first thruster motor in a structure in which a guide rail is formed on an upper deck of a residence and a lifting unit is installed on the guide rail; Transporting the first thrustor motor while the lifting unit moves along the guide rail; And placing the first thruster motor on top of a stationary platform formed in a lower deck of the docking station; And maintaining the first thrustor motor through the seating hole of the fixed platform.

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Maintenance of the air conditioning vents, maintenance of the first thruster motor, maintenance of the boarding station / lifeboat can be performed through the fixed platform.

As described above, according to the present invention, a guide rail is formed on an upper deck of an inhabiting sill, a lifting unit is provided on a guide rail, and a fixing device for fixing a first thruster motor carried by a lifting unit to a lower deck Since the platform is extended, maintenance of the first thruster motor can be smoothly performed without using the first cargo hold deck crane during maintenance work of the first thruster motor, and maintenance of the first thruster motor The safety and convenience of the crew are improved during the maintenance work.

In addition, the present invention eliminates the need for a hatch on the helideck, further shortens the work interruption period due to the maintenance and repair of the first thruster motor, and increases the competitiveness and reliability of the drill ship.

1 is a plan view showing a cargo hold deck crane arrangement of a conventional drill ship;
2 is a vertical cross-sectional view illustrating maintenance of a conventional thruster motor
3 is a perspective view of a conventional portable table,
Figure 4 is a top view of a drill ship thruster motor maintenance system in accordance with an embodiment of the present invention.
5 is a longitudinal sectional view showing a drill ship's thruster motor maintenance system according to an embodiment of the present invention.
6 is a plan view showing the guide rail
7 is a plan view showing a fixed platform installed on an A deck of a residence.
8 is a longitudinal sectional view showing a fixed platform installed on an A deck of a dwelling
9 is a longitudinal section view showing a stationary platform according to another embodiment of the present invention
10 is a flowchart for explaining the thruster motor maintenance method of the present invention

Hereinafter, a drill ship thruster motor maintenance system and a thruster motor maintenance method using the system according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 4 is a plan view showing a drill ship's thruster motor maintenance system according to an embodiment of the present invention, and FIG. 5 is a longitudinal sectional view showing a drill ship's thruster motor maintenance system according to an embodiment of the present invention FIG. 6 is a plan view showing a guide rail, FIG. 7 is a plan view showing a fixed platform installed on an A deck of a dwelling, and FIG. 8 is a vertical sectional view showing a fixed platform installed on an A deck of a dwelling.

Referring to the above drawings, a drill ship thruster motor maintenance system according to a preferred embodiment of the present invention includes first and second cargo hold decks (not shown) for handling drill pipes 1 in a fore- Third and fourth cargo hold deck cranes 30 and 40 for handling the riser pipes 2 are disposed at both ends on the aft side of the drill ship 10 do.

The first cargo hold deck cranes 10 and the second cargo hold deck cranes 20 and the third cargo hold deck cranes 30 and the fourth cargo hold deck cranes 40 are arranged in a zigzag manner, 1) and the riser pipe (2).

By moving the first cargo hold deck crane 10 to the aft side of the drill ship as described above, it is possible to handle the riser pipe 2 mounted on the forward end of the drill ship and the fourth cargo hold deck crane 40 By moving to the forward side of the drill ship, it is possible to handle the drill pipe 1 loaded on the rear port edge of the drill ship.

A thruster (50) is used to maintain the hull station and correct the orbit. In the case of a floating structure such as a drill ship, the DP (Dynamic positioning system is essential. One example of what is being adopted as such a DP system is a thruster, and in this embodiment the thruster may be an azimuth thruster.

The thruster 50 of the present embodiment includes an underwater unit 53 installed to be exposed to seawater and a receptacle 52 and a thruster motor 51. The thruster 50 is installed and installed It goes without saying that the control method and its configuration can be applied variously according to the needs of those skilled in the art. The description of the present invention is limited to the first thruster as the forward thruster.

As described above, when the first cargo hold deck crane 10 is moved to the stern side, there is a problem that it becomes difficult to use the first cargo hold deck crane 10 for maintenance of the first thruster motor 51 Occurs.
The drill ship's thruster motor maintenance system according to the present invention is a system in which the first to fourth cargo hold deck cranes 10-40 installed on a ship can not use the deck crane arrangement structure, A plurality of first thruster motors 51 provided in the ship's lateral direction inside the thruster room R on the forward side utilizing the space between the helideck 3 and the main deck, The first thruster motor 51 can be taken out to the outside of the vehicle R and the first thruster motor 51 taken out can be maintained.

In the drill ship thruster motor maintenance system according to the present invention, a monorail system, that is, a guide (not shown), is attached to the upper deck of the housing 5 for maintenance of the first thruster motor 51 installed in the thruster room R. [ The rail 110 is formed to extend in the hull width direction.

The lifting unit 111 is installed on the guide rail 110 and the lower deck of the accommodation hole 5 is provided with a guide rail 110 for holding the first thruster motor 51 carried by the lifting unit 111 The fixed platform 120 is extended. As the lifting unit 111, a hoist can be used.

The upper deck includes a deck of either the D-deck or the E-deck of the dwelling unit 5, and the lower deck includes a deck of either the A deck or the B deck of the dwelling unit.

In the description of the present invention, a guide rail 110 is installed on the E-deck of the residence 5, and a fixed platform 120 is formed on the B-deck.

Conventionally, the temporary foundation 60 is installed on the main deck, and the first thruster motor 51 is placed on the temporary foundation 60, so that space narrowing and mooring on the main deck are not easily arranged, The foundation itself is so heavy that it is very difficult to install a temporary foundation.

In addition, the temporary foundation 60 is used only for maintenance of the first thruster motor 51 for a while, and is required to be stored for a long period of time after maintenance.

However, in the present invention, a fixed platform 120 capable of eliminating the temporary foundation and serving as its temporary foundation may be provided on the A deck (or B deck).

That is, the fixed platform 120 for holding the first thruster motor 51 carried by the lifting unit 111 may be extended in the hull width direction.

Since the fixed platform 120 is placed on the A deck (or the B deck), the space above the main deck of the hull can be utilized.

A seating hole 121 may be formed in the fixed platform 120. A portion of the first thruster motor 51 may be inserted and fixed through the seating hole 121 to perform a test .

The fixed platform 120 is connected to at least one of the air conditioning vent maintenance area Z 1, the first thruster motor maintenance area Z 2, and the boarding station / life boat maintenance area Z 3 .

Also, a connection platform 125 for maintenance of the life boat B may be installed on the fixed platform 120.

9 is a longitudinal sectional view showing a fixed platform according to another embodiment of the present invention.

Referring to FIG. 9, in the fixed platform according to another embodiment of the present invention, there may occur interference and obstacle in maintenance of the equipment, and a part of the fixed platform 220 can be rotated by the hinge part 221 So that it can be used as a traveling platform at the time of operation and when the fixed platform 220 is folded using the hinge portion 221 at the time of maintenance of the equipment, .

The operation of the drill ship thruster motor maintenance system according to an embodiment of the present invention will be described.

When it is necessary to repair the first thruster motor 51 of the first thruster 50 installed on the drill ship, if the repair ship that receives the first thruster motor 51 is adjacent to the drill ship, Open all hatches for repairing thruster motors that are not in service.

Then, the lifting unit 111 is lowered and connected to the first thruster motor 51, and then the first thruster motor 51 is separated from the hull and lifted upward.

The first thrustor motor 51 is then transported along the guide rail 110 in the hull width direction using the lifting unit 111 and then placed on the fixed platform 120. In the maintenance work of the first thruster motor 51, since a plurality of magnetic position control devices such as a mooring system are independently operated in the drill ship and the repair ship, the two ships can continuously maintain the relative distance and relative position . The first thruster motor 51 is safely moved to the repair ship and then repaired. Thereafter, when repair of the thruster motor 51 of the first thruster 50 is completed in the repair ship, the first thruster motor 51 is reinstalled on the drill ship in the reverse order.

Meanwhile, FIG. 10 is a flowchart for explaining a method of maintaining the thruster motor of the present invention.

10, a method of maintaining a thruster motor according to the present invention is characterized in that a guide rail 110 is formed in a hull width direction in a dwelling, and a guide rail 110 is provided with a plurality of first sub- In the drill ship's thruster motor maintenance system in which the lifter unit 111 for lifting the stator motor 51 and moving in the hull width direction is provided, the first to fourth cargo hold deck cranes 10-40 In the deck crane arrangement structure which does not utilize the helicopter 3, the space between the heald deck 3 and the main deck is utilized so that the space inside the thunder room R on the forward side The plurality of first thrustor motors 51 installed are drawn out of the thruster room R and the drawn thruster motor 51 is seated on the lower deck of the housing 5, Drillshops of repair CLAIMS What is claimed is: 1. A method of maintaining a luster motor, comprising: lifting the first thrustor motor (51) by lifting unit (111); (S 120) of carrying the first thrustor motor (51) while the lifting unit (111) moves along the guide rail (110) in the hull width direction; (S 130) placing the first thruster motor (51) on a fixed platform (120) installed in a lower deck of the residence (5); And a step (S 140) of maintaining (testing) the first thrustor motor 51 through a seating hole 121 formed in the fixed platform 120.
A portion of the first thruster motor 51 is inserted and fixed in the seating hole 121 formed in the fixed platform 120 and the first thruster motor 51 51) can be maintained.

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Maintenance of the air conditioning vents, maintenance of the first thruster motor, maintenance of the boarding station / lifeboat can be performed through the fixed platform 120.

As described above, the present invention is characterized in that the guide rails are extended to the upper deck of the dwelling, the guide rails are provided with lifting units, and the lower deck of the dwelling unit is provided with a first thruster motor Since the fixed platform is extended, maintenance of the first thruster motor can be smoothly performed without using the first cargo hold deck crane during the maintenance work of the first thruster motor, The safety and convenience of the crew can be improved during the maintenance work.

In addition, the present invention eliminates the need for a hatch on the helideck, further shortens the work interruption period due to the maintenance and repair of the first thruster motor, and improves the competitiveness and reliability of the drill ship .

The structure of the ship for repairing the first thruster motor according to the present invention has been described above. It will be understood by those skilled in the art that the technical features of the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

For example, although the present invention is applied to a drill ship such as a drill ship, it goes without saying that the present invention can be applied to various ships such as a ship with a thruster installed therein.

Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, And all equivalents and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

1: Drill pipe
2: riser pipe
5: Residential District
10: 1st cargo hold deck crane
20: 2nd cargo hold deck crane
30: 3rd cargo hold deck crane
40: 4th cargo hold deck crane
50: First thruster
51: First thruster motor
52: Propeller
60: Temporary Foundation
110: Guide rail
111: lifting unit
120: Fixed platform
121: Seated hole
221: Hinge section
R: Thruster room

Claims (12)

It is possible to utilize the space between the helideck 3 and the main deck without passing through the helideck 3 in the deck crane arrangement structure in which the first to fourth cargo hold deck cranes 10-40 installed on the ship can not be used , A plurality of first thruster motors (51) provided in the hull width direction inside the thruster room (R) of the forward side are drawn out of the thruster room (R), and the first thruster motor 51), characterized in that the drill-
A guide rail 110 is formed in the upper deck of the hull 5 in the width direction of the hull and a lifting gear for lifting the first thruster motor 51 and moving in the width direction of the hull, A fixed platform 120 is installed on the lower deck of the dwelling unit 5 to house the first thruster motor 51 carried by the lifting unit 111, The stationary platform (120) is provided with a seating hole (121) for inserting and fixing a part of the first thruster motor (51) to maintain the first thruster motor (51) Thruster motor maintenance system. The method according to claim 1,
Characterized in that the upper deck comprises a deck of either a D deck or an E deck of the dwelling section and the lower deck comprises a deck of either an A deck or a B deck of the dwelling section. Motor maintenance system. delete The method according to claim 1,
Wherein the fixed platform is provided with a connection platform for maintenance of the lifeboat. delete delete The method according to claim 1,
Wherein the fixed platform includes at least one of an air conditioning vent maintenance area, the first thruster motor maintenance area, and a boarding station / life boat maintenance area. system. delete The method according to claim 1,
Characterized in that the lifting unit comprises a hoist device. A guide rail 110 is formed in the upper deck of the hut 5 in the width direction of the hull and a lifting unit for lifting the first thruster motor 51 and moving in the hull width direction 111 are installed on the helicopter 3, the helideck 3 is installed in a deck crane arrangement structure in which the first to fourth cargo hold deck cranes 10-40 installed onboard the ship can not be used, The first thruster motor 51 installed in the ship's lateral direction inside the thruster room R by utilizing the space between the helideck 3 and the main deck, (5), the first thruster motor (51) being taken out to the outside of the housing (R), and the first thruster motor (51)
Lifting the first thrustor motor (51) by the lifting unit (111); (S 120) of carrying the first thrustor motor (51) while the lifting unit (111) moves along the guide rail (110) in the hull width direction; (S 130) placing the first thruster motor (51) on a fixed platform (120) installed in a lower deck of the residence (5); And a step (S 140) of maintaining (testing) the first thrustor motor (51) through a seating hole (121) formed in the fixed platform (120)
A portion of the first thruster motor 51 is inserted and fixed in the seating hole 121 formed in the fixed platform 120 and the first thruster motor 51 is inserted through the seating hole 121, (51). ≪ / RTI > delete The method of claim 10,
Wherein the maintenance work of the air conditioning vents, the maintenance of the first thruster motor, and the maintenance of the boarding station / lifeboat are performed through the fixed platform.

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