KR20130017524A

KR20130017524A - Lng bunkering barge system using water jet

Info

Publication number: KR20130017524A
Application number: KR1020110080012A
Authority: KR
Inventors: 김태용; 이재익; 이경완; 이종일
Original assignee: 에스티엑스조선해양 주식회사
Priority date: 2011-08-11
Filing date: 2011-08-11
Publication date: 2013-02-20

Abstract

The present invention LNG bunkering ship; And it can be achieved through the LNG bunkering barge system using a water jet, characterized in that it is installed on the LNG bunkering vessel and the dynamic positioning system to adjust the hull using a water jet propulsion method. The present invention is applied to the water jet propulsion system in place of the existing propeller propulsion method to the LNG bunkering vessel of the barge type, the equipment cost of the dynamic positioning system is inexpensive, by adjusting the injection direction of the water jet of the hull Has the effect of easily maneuvering.

Description

LNG Bunkering Barge system using water jet

The present invention relates to an LNG bunker barge system using a water jet, by applying a water jet propulsion system in place of the existing propeller propulsion method to an LNG bunker barge of the barge type, the equipment cost of the dynamic positioning system is low and In addition, the present invention relates to an LNG bunkering barge system using a water jet that can easily control the hull by controlling the jetting direction of the water jet.

In general, the LNG bunkering system is a system for supplying fuel to ships using LNG as a propellant fuel, which can reduce nitrogen oxides by 90% or more and greenhouse gases by 20% or more, compared to conventional petroleum fuels.

As the LNG bunkering system, an LNG bunkering system for supplying fuel by docking a ship to ship from the side as shown in FIG. 1 may be used.

1 is a conceptual diagram illustrating a LNG bunkering system of a general ship to ship.

The LNG bunkering system of ship-to-ship as shown in FIG. 1 is a system in which a bunkering ship 20 loads LNG and supplies fuel quickly while the LNG fuel propulsion vessel 10 unloads cargo in the port. As a bunkering vessel 20 is supplied to the fuel berthing to the side of the LNG fuel propulsion vessel (10).

At this time, the LNG fuel propulsion ship 10 may utilize the self-barge barge as shown in FIG. The barge barge is a hull having a simple structure that can be transported by loading the cargo on the upper surface of the hull.

The LNG fuel propulsion vessel 10 requires a dynamic positioning system in order to maintain a stable position during fueling.

Here, the dynamic positioning system (Dynamic positioning system), using a position detection system by radio waves, ultrasonic waves, etc. to detect the displacement of the ship or offshore structure in the horizontal plane, the propulsion system such as propeller, thruster, etc. As a method of driving and maintaining the structure at the target point, the dynamic positioning system is maintained or adjusted by a propulsion device such as an Azimuth thruster 21 as shown in FIGS. 3 and 4. It is suitable for long-term mooring in the deep-sea area where the normal mooring method is difficult.

At this time, the high value-added steering, propulsion device, and propeller of a general ship, which are mainly mounted on the offshore plant ship, are fixed to the rear of the ship, while the azimus thruster 21 is mounted on the bow and the stern to control the direction of propulsion and movement of the ship. I can change it freely

However, the dynamic positioning system using the azimuth thruster 21 is difficult to apply when the draft of the ship is low, and there is a problem that the unit price of the azimuth thruster 21 is expensive.

In addition, the propeller (Propeller) used in the barge in the past due to the limitation of the propulsion method can not maintain the position precisely during bunkering (Bunkering), there was a problem that the safety of the work falls.

In addition, in the prior art, the bunkering vessel 20 requires a tug boat, that is, a tugboat, in order to dock the LNG fuel propulsion vessel 10, which requires additional manpower and equipment.

An object of the present invention devised to solve the problems of the prior art by applying a water jet propulsion system in place of the existing propeller propulsion method to barge-type LNG bunkering vessel, the equipment cost of the dynamic positioning system is low In addition, the present invention provides an LNG bunkering barge system using a water jet that can easily control the hull by controlling the spraying direction of the water jet.

An object of the present invention is an LNG bunkering vessel; And it can be achieved through the LNG bunkering barge system using a water jet, characterized in that it is installed on the LNG bunkering vessel and the dynamic positioning system to adjust the hull using a water jet propulsion method.

In addition, the LNG bunkering ship is characterized in that the barge barge.

In addition, the dynamic positioning system includes a water suction unit installed on the bottom of the LNG bunkering vessel; And a waterjet nozzle installed at both sides of the hull of the bow / stern part to obtain a driving force by high pressure injection of water supplied from the water suction unit.

At this time, the water suction unit may be installed on the central portion of the bottom, characterized in that at least four waterjet nozzles are installed.

The present invention is applied to the water jet propulsion system in place of the existing propeller propulsion method to the LNG bunkering vessel of the barge type, the equipment cost of the dynamic positioning system is inexpensive, the steering of the hull using the jet jet direction control This has the effect of being easy to perform.

1 is a conceptual diagram showing a LNG bunkering system of a typical ship to ship.
Figure 2 is a schematic diagram showing a general self-barge line.
3 is a bottom perspective view of a vessel to which the prior art dynamic positioning system is applied.
Figure 4 is a photograph showing the azimus thruster of the prior art.
5 is a plan view showing an LNG bunkering barge system using a water jet according to an embodiment of the present invention.
Figure 6 is a side view showing an LNG bunker barge system using a water jet according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

5 is a plan view illustrating an LNG bunker barge system using a water jet according to an embodiment of the present invention, and FIG. 6 is a side view illustrating an LNG bunker barge system using a water jet according to an embodiment of the present invention.

5 and 6, the present invention is installed on the LNG bunkering vessel 110 of the barge type is a dynamic positioning system 120 using a water jet (water jet) propulsion method in place of the existing propeller propulsion method.

The LNG bunkering vessel 110 is a kind of self-barge barge, consisting of a simple structure for loading and transporting cargo to the upper surface of the hull, self-navigable, at the same time easy stern docking and balance of the hull properly maintained Has

The LNG bunkering vessel 110 of the self-barge barge type is easy to manufacture and provides convenience in operation of the barge, easy loading and unloading of cargo, and minimizes the load for balancing the hull, thereby providing workability. This has the advantage that it can be manufactured with an excellent, lightweight hull.

The water jet propulsion method used in the dynamic positioning system 120 of the present invention is inexpensive as compared to the existing Azimuth Thruster and controls the hull by adjusting the injection direction, thereby controlling the hull. It has the advantage of easy steering.

Referring to FIGS. 5 and 6, the dynamic positioning system 120 of the present invention installs a water flow intake 121 at the bottom of the LNG bunkering vessel 110, and both hulls of the bow / stern part. A total of four water jet nozzles (123) are installed in each.

In this case, one water suction unit 121 may be installed at the central portion of the ship bottom, and four or more water jet nozzles 123 may be installed.

The waterjet nozzle 123 obtains thrust by spraying water supplied through the water suction unit 121 at a high pressure, and the spraying direction can be freely adjusted.

Such a waterjet propulsion method has no protrusions at the bottom of the sea to enable navigation at a low depth, ensures excellent maneuverability enough to rotate 360 degrees in place, and has a high propulsion efficiency at high speed.

In addition, maintenance costs can be reduced because maintenance time can be reduced, and maintenance costs are low, vibration and noise are low, and the boarding feeling is excellent and quiet. Since this is excellent and rapid braking is possible, there is an advantage of having excellent maneuverability.

LNG bunkering barge system using the water jet of the present invention as described above is a separate monitoring system that can efficiently operate the dynamic positioning system 120 by adjusting the injection direction and the injection flow rate of each of the four waterjet injection nozzle 123 ( And a control system (not shown).

Hereinafter, the operation of the LNG bunkering barge system using a water jet according to an embodiment of the present invention will be described.

The LNG bunkering vessel 110 according to the present invention is moved to approach in the side direction of one side of the LNG propulsion vessel (not shown) for refueling.

Thereafter, the dynamic positioning system 120 of the present invention is operated for the near eyepiece.

The fluid sucked through the water suction unit 121 installed in the center of the bottom of the LNG bunkering vessel 110 is injected by a high pressure through the waterjet nozzle 123, respectively, to control the position by moving the hull using the thrust generated. .

In this case, the waterjet nozzle 123 may control the respective injection direction and the injection flow rate.

These hull adjustments can be controlled through the monitoring system and the control system of the bead.

The present invention as described above by applying a water jet propulsion system to the LNG bunkering vessel of the barge type in place of the existing propeller propulsion method, the equipment cost of the dynamic positioning system is inexpensive, and the jetting direction control of the water jet It has the advantage that the steering of the hull can be carried out easily.

110: LNG bunkering vessel
120: dynamic positioning system
121: water suction
123: waterjet nozzle

Claims

LNG bunkering vessel 110; And
A dynamic positioning system 120 installed on the LNG bunkering vessel 110 to adjust the hull using a water jet propulsion method;
LNG bunkering barge system using a water jet, characterized in that it comprises a.

The method of claim 1,
The LNG bunkering vessel 110 is an LNG bunkering barge system using a water jet, characterized in that the self-barge barge.

The method of claim 1,
The dynamic positioning system 120
A water suction unit 121 installed at the bottom of the LNG bunkering vessel 110; And
LNG bunkering barge system using a water jet, characterized in that it comprises a water jet nozzle (123) installed on both sides of the hull of the bow / stern portion to obtain high-pressure injection of water supplied from the water suction unit (121).

The method of claim 3,
The water suction unit 121 may be installed on the central portion of the bottom of the bottom, LNG jet bunker barge system using a water jet, characterized in that at least four or more waterjet nozzle 123 is installed.