KR102055401B1 - Temporary Ballasting System for Semi-Rig Ship - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a semi-rigid ballast apparatus, by installing a guide rail in the hull of a semi-rigid ship, and installing a moving tank capable of storing and discharging liquid along the guide rail to enable a worker to use a portable pump. This allows the hull and trim of the hull to be adjusted by simply adjusting the liquid storage capacity of the moving tank or moving the moving tank along the guide rail without the inconvenience of having to do main / drain work on the ballast tank of the hull. It provides a semi-rigid ballast device that can adjust the equilibrium of the hull more quickly and conveniently during the mounting process of the component blocks during the construction work, and can shorten the overall construction period of the wall.

Description

Temporary Ballasting System for Semi-Rig Ship

The present invention relates to a temporary ballast device for a semi-rigid line. More specifically, a guide rail is installed on the hull of a semi-rigid ship, and a moving tank capable of storing and discharging liquid is movably mounted along the guide rail, so that an operator can use a portable pump to transfer the main / drain to the ballast tank of the hull. Without the hassle of working, the heel and trim of the hull can be adjusted simply by adjusting the liquid storage volume of the moving tank or by moving the moving tank along the guide rails. The present invention relates to a semi-rigid temporary ballast device capable of more quickly and conveniently adjusting the equilibrium state of the hull and shortening the overall construction period of the inner wall.

On ships equipped with various drilling equipments for drilling oil or gas existing in the seabed below, rig ships or floating crude oil production storage and unloading facilities (FPSO) Floating Production Storage and Offloading) and recently developed drillships used for offshore drilling.

Rig ships or FPSOs dedicated to subsea drilling can only be sailed by other tugboats, and mooring devices are used for subsea drilling, anchored at a point on the sea, and drillships have been recently developed and advanced drilling equipment. It is manufactured in the same form as a general ship so that it can be sailed by its own power.

Semi-rig ships among rigs dedicated to subsea drilling consist of pontoons arranged to submerge from the sea surface, columns installed vertically from the pontoons, and horizontal decks formed on top of the columns. Deck is installed on the deck for seabed drilling, and the door pool is formed in the vertical bottom of the derrick.

This semi-rigid ship is launched after drying on land, and after launching, the drying process is carried out by mounting various components on the hull in block units near the quay wall. In other words, the semi-rigid vessels are finally dried by performing a wall-drying process of mounting and finishing various components in a state launched to the coast near the wall.

Due to the characteristics of the drying operation, trims and heels are generated in the hull according to the position and weight of the mounting blocks in the process of mounting various blocks during the semi-rigid wall construction. The trim means the hull oscillates up and down along the bow and stern direction, and the heel means the hull oscillates up and down along the direction perpendicular to the trim, that is, the line width direction.

Vibrations such as trim and heel are generally controlled and balanced by a ballast system provided on the hull. During the construction of the wall, these ballast systems are not mounted on the hull or operate normally. In some cases this is not possible and the hull balancing function cannot be performed through the ballast system.

Therefore, during the quarrying operation of the semi-rigid vessels, the ship is generally maintained in the equilibrium state of the hull in a manner that the operator pumps / drains the ballast tank using a portable pump. Such work requires a lot of time for the main / drainage work, which is very cumbersome and difficult, and it is also difficult to maintain an accurate equilibrium of the hull, thus increasing the duration of the construction of the semi-rigid hull. Is also occurring.

Domestic Patent No. 10-0834289

The present invention has been invented to solve the problems of the prior art, an object of the present invention by installing a guide rail on the hull of a semi-rigid ship, by moving the movable tank along the guide rail to move the storage tank can be stored and discharged This allows the operator to maintain the hull and trim of the hull by simply adjusting the liquid storage volume of the moving tank or by moving the moving tank along the guide rail, without the need for the operator to perform main / drain work on the ballast tank of the hull using a portable pump. It provides a semi-rigid hypothesis ballast device that can be adjusted, and thus, it is possible to more quickly and conveniently adjust the equilibrium state of the hull in the process of mounting the component blocks during the quarrying operation, and to shorten the overall quarrying work period. It is.

The present invention is a hypothesis ballast device for adjusting the equilibrium state of the semi-rigid line in the construction of the quay wall of the semi-rigid line, the guide rail is installed long in one direction to cross the hull; And a moving tank having an inlet and an outlet formed therein to allow the liquid to flow in and out therein, and a moving tank linearly moving along the guide rail.

In this case, the temporary ballast device may further include a liquid supply unit for supplying a liquid to the moving tank through the inlet.

In addition, the liquid supply unit may supply sea water to the moving tank.

In addition, the liquid supply unit may include a seawater supply pump for pumping and supplying seawater; And it may include a sea water supply line connecting the inlet of the sea water supply pump and the moving tank.

The temporary ballast device may further include a driving unit for linearly moving the moving tank along the guide rail.

In addition, each of the inlet and outlet of the moving tank is equipped with an on-off valve, the on-off valve may be controlled operation through a separate control unit.

In addition, a plurality of the guide rails are disposed so as to be respectively located in the bow portion and the stern portion, the moving tank may be mounted to each guide rail to be movable.

In addition, the guide rail may be installed on a work temporary bridge for connecting the two pontoons to each other.

On the other hand, the present invention, as a semi-rigid balance control method for adjusting the equilibrium state for the semi-rigid line of the dry wall process using the temporary ballast device of the semi-rigid line, moving the moving tank along the guide rail or Or it provides a method for balancing the semi-rigid ship, characterized in that for controlling the equilibrium state of the hull by adjusting the liquid storage amount of the moving tank.

At this time, the guide rail is installed long in a direction crossing the two pontoons, and the moving tank is moved along the guide rail in a state in which the liquid is stored in the moving tank to adjust the heel state of the semi-rigid line.

In addition, the guide rail may be installed at the bow portion or the stern portion, and the trim state of the semi-rigid line may be adjusted by adjusting the liquid storage amount of the moving tank through the inlet or the outlet of the moving tank.

In addition, the guide rail is formed long in the direction crossing the two pontoons are installed in a plurality of so that the bow portion and the stern portion, respectively, and the movable tank is mounted to each of the plurality of guide rail to move, the moving tank Through the inlet or outlet of the plurality of the liquid storage volume of the moving tank can be adjusted to adjust the trim state of the semi-rigid line respectively.

According to the present invention, a guide rail is installed on a hull of a semi-rigid ship, and a moving tank capable of storing and discharging liquid is movably mounted along the guide rail, whereby a worker uses a portable pump to make a main / last ballast tank. Without the hassle of draining, the heel and trim of the hull can be adjusted simply by adjusting the liquid storage volume of the moving tank or by moving the moving tank along the guide rail, thus loading the component blocks during the drywall In the hull equilibrium can be adjusted more quickly and conveniently, and also has the effect of shortening the overall construction period of the quay wall.

In addition, it is possible to adjust the equilibrium state of the hull in a variety of forms by varying the arrangement of the guide rail in various ways, in particular, by adjusting the sensitivity of the ship's center of gravity movement by adjusting the amount of liquid stored in the moving tank. There is an effect that can adjust the equilibrium state of the hull in a variety of ways according to the needs of the user.

In addition, by installing devices such as guide rails using the existing work temporary bridges in the construction process of semi-rigid walls, it is not necessary to install the temporary supporting structure separately, thereby simplifying the installation work and the installation work period. The reduction of the space efficiency of the hull work can be prevented in that the shortening and the cost reduction can be achieved, and the additional supporting structure is not added.

1 is a perspective view schematically showing a configuration for a hypothetical ballast device of a semi-rigid line according to an embodiment of the present invention,
Figure 2 is a perspective view schematically showing the configuration for a hypothetical ballast device of a semi-rigid line according to another embodiment of the present invention,
Figure 3 is a side view schematically showing the configuration for a hypothetical ballast device of a semi-rigid line according to an embodiment of the present invention,
4 is an operating state diagram schematically showing a heel adjustment state using a hypothesis ballast device of a semi-rigid ship according to an embodiment of the present invention;
5 and 6 is an operating state diagram schematically showing a trim adjustment state using a hypothesis ballast device of a semi-rigid line according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a perspective view schematically showing the configuration of a semi-rigid ballast apparatus according to an embodiment of the present invention, Figure 2 is a configuration of a semi-rigid ballast apparatus according to another embodiment of the present invention Figure 3 is a perspective view schematically, Figure 3 is a side view schematically showing the configuration for a hypothesis ballast device of a semi-rigid line according to an embodiment of the present invention.

Semi-rigid ballast apparatus 300 according to an embodiment of the present invention to prevent the heel and trim of the hull by adjusting the equilibrium state of the hull in the process of mounting the part block during the drywall construction process for the semi-rigid line As a device for, it comprises a guide rail 310 and the moving tank (320).

First, the semi-rigid line is a pontoon (110) arranged to dive to a certain depth from the sea surface, the column 120 is installed in the vertical direction from the pontoon (110), the horizontal deck formed on the column 120 ( 130), and during the construction of the quay wall, all of these structures are dried and located on the shore near the quay wall.

The guide rail 310 is installed in a direction crossing two mutually opposing pontoons 110, and the moving tank 320 is mounted to the guide rail 310 to move linearly along the guide rail 310. In addition, the inlet 321 and the outlet 322 are formed in the moving tank 320 to allow the liquid L to be introduced and discharged therein.

At this time, a plurality of guide rails 310 may be disposed so as to be respectively located on the bow side and the stern side, for example, as shown in Figure 1 may be arranged one each on the bow side and the stern side. Alternatively, as shown in FIG. 2, one may be disposed only on the bow side or the stern side.

On the other hand, the semi-rigid ship in the construction of the quay wall, as shown in Figures 1 to 3 is provided with a working temporary bridge 200 so that the operator can pass across the two pontoons 110 region, one embodiment of the present invention Guide rail 310 according to the example is preferably installed in the existing work temporary installation legs 200 without the need to install a separate structure for supporting the guide rail 310 in terms of workability.

The hypothesis ballast device 300 as described above moves the moving tank 320 along the guide rail 310 in the line width direction while the liquid L is introduced into the moving tank 320 to adjust the heel state of the hull. In addition, by adjusting the liquid storage amount stored in the moving tank 320, it is possible to adjust the trim state of the hull, a detailed description thereof will be described later with reference to FIGS.

As such, in order to move the moving tank 320 along the guide rail 310, a separate driving unit 350 for moving the moving tank 320 may be provided, and the driving unit 350 may include the moving tank 320. ) May be configured in the form of a drive motor (not shown) and gear box (not shown) mounted in the form of a moving belt or a moving belt installed on the work temporary bridge 200. Can be configured.

In addition, the inlet 321 and the outlet 322 are formed in the moving tank 320 to introduce or discharge the liquid L into the moving tank 320, wherein the inlet 321 of the moving tank 320 is formed. A liquid supply unit 340 may be further provided to supply liquid to the moving tank 320 through the liquid supply unit 340. The liquid supply unit 340 may supply water delivered from the land, but in a form of pumping seawater. It is preferred to be configured.

For example, the liquid supply unit 340 may include a seawater supply pump 341 for pumping and supplying seawater, and a seawater supply line 342 connecting the seawater supply pump 341 and the inlet 321 of the moving tank 320. It may be configured to include. At this time, the sea water supply pump 341 may be installed in the working temporary bridge 200, as shown in FIG.

On the other hand, in order to control the liquid storage amount of the moving tank 320 through the inlet 321 and the outlet 322 is equipped with an on-off valve 330 to open and close the inlet 321 and the outlet 322, respectively. Preferably, the opening and closing valve 330 may be configured to control the operation through a separate control unit 360. The control unit 360 receives an operation signal from an operation unit (not shown) that can be operated by a user, and controls the opening / closing valve 330 or automatically operates the opening / closing valve 330 through a separate sensor or program. Can be configured to control.

The control unit 360 may not only control the operation of the on / off valve 330 but also control the operation of the above-described seawater supply pump 341, and operate the driving unit 350 to move the moving tank 320. Control can also be performed.

According to this configuration, the opening and closing valve 330 is controlled by the control unit 360, thereby controlling the liquid discharged from the moving tank 320, and through the liquid discharge control to adjust the equilibrium state of the hull in various ways Can be.

Next, the operation state of the hypothesis ballast device will be described with reference to FIGS. 4 and 6.

Figure 4 is an operating state diagram schematically showing a heel control state using a hypothesis ballast device of a semi-rigid line according to an embodiment of the present invention, Figure 5 and Figure 6 is a hypothetical ballast of a semi-rigid line according to an embodiment of the present invention An operating state diagram schematically showing a trim adjustment state using the device.

First, referring to the heel adjustment process of the semi-rigid line, as shown in FIG. 4, when the liquid L is stored in the moving tank 320 through the liquid supply unit 340 according to a user's needs, the moving tank The 320 is acted as a weight by the weight of the liquid (L), the moving tank 320 by the drive unit 350 along the guide rail 310 in the direction of the line width in a way to move the left and right of the hull You can adjust the heel condition.

That is, when the moving tank 320 is moved along the guide rail 310 in a state where the liquid L is stored, the same effect as the left and right movement of the weight body in the line width direction occurs, so that the center of gravity of the ship body corresponds to the line width. Will change in the direction.

Therefore, when a heel phenomenon occurs in the hull during the process of mounting the component block during the construction of the semi-rigid wall construction, by moving the moving tank 320 to the line width direction along the guide rail 310 to the left or right, By changing the center of gravity, the hull can be balanced.

At this time, the liquid storage amount stored in the moving tank 320 can be adjusted according to the user's needs, and can be appropriately adjusted in consideration of the size change of the center of gravity required according to the size of the heel phenomenon occurring during the mounting process of the component block. .

Next, referring to the trim adjustment process of the semi-rigid line, first, as shown in FIGS. 5 and 6, the hull of the hull is simply adjusted in such a manner that the liquid storage amount of the moving tank 320 is adjusted without having to move the moving tank 320. You can adjust the trim state.

For example, when the guide rail 310 is located on the bow side and the stern side, respectively, as shown in FIG. 5, for example, the bow side moving tank 320 stores the liquid L in full, and the stern When all the liquid is empty in the side moving tank 320, the center of gravity is moved to the bow side by the bow side moving tank 320 in which the liquid L is stored. On the contrary, when the liquid L is fully stored in the stern side moving tank 320 and all the liquids are emptied in the bow side moving tank 320, the center of gravity is formed by the stern side moving tank 320 in which the liquid L is stored. It moves to this stern side.

In this manner, by adjusting the amount of liquid stored in the bow side moving tank 320 and the stern side moving tank 320 according to the trim state of the hull, the center of gravity can be moved to the bow or stern side to maintain the equilibrium of the hull. Can be.

On the other hand, in the same way, as shown in Figure 6, when the guide rail 310 is located only on the bow side or the stern side, the center of gravity is simply adjusted by simply adjusting the liquid storage amount stored in one moving tank 320 Can change.

For example, when the guide rail 310 is located only on the bow side, when the liquid L is filled in the moving tank 320 located on the bow side, the center of gravity moves to the bow side, and from the moving tank 320 When all the liquid L is discharged, the center of gravity moves relatively to the stern side compared to the state in which the moving tank 320 is filled with the liquid.

Therefore, the trim state of the hull may be adjusted with only one moving tank 320 in this manner.

As described above, the hypothetical ballast device 300 according to the exemplary embodiment of the present invention may adjust the heel state and the trim state of the hull through the movement of the moving tank 320 or the liquid storage amount control, and a combination thereof. Both heel and trim conditions can be adjusted at the same time. In addition, it is possible to adjust the equilibrium state of the hull in a variety of ways according to the user's needs, such as the sensitivity to the movement of the center of gravity by adjusting the liquid storage amount of the moving tank 320.

In particular, if the normal hull system is not mounted on the hull during the construction of the semi-rigre of the semi-rigged ship, or even if it is mounted, the operation of the hull may be performed by pumping and supplying liquid to the ballast tank using a portable pump as in the prior art. There is no need to adjust the equilibrium state, it is possible to quickly and conveniently adjust the equilibrium state of the hull by simply moving the moving tank 320 or by adjusting the liquid storage amount, which can shorten the overall period of the dry wall construction work will be.

The guide rail 310 has been described as being installed in a direction crossing the pontoon 110, but may be installed in a direction parallel to the pontoon 110, the left side of the line width direction in a state parallel to the pontoon 110 And it may have a variety of arrangements, such as may be installed respectively on the right. In this case, the trim of the hull may be adjusted through the movement of the moving tank 320, and the heel of the hull may be adjusted by adjusting the liquid storage amount of the moving tank 320, which operates on the same principle as described above. Detailed description thereof will be omitted.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

110: pontoon 120: column
200: temporary work leg 300: temporary ballast device
310: guide rail 320: moving tank
321: inlet 322: outlet
330: on-off valve 340: liquid supply unit
341: seawater supply pump 342: seawater supply line
350: drive unit 360: control unit

Claims (12)

A hypothetical ballast device that controls the equilibrium state of semi-rigid ships during the construction of the semi-rigid walls.
A guide rail installed in one direction so as to cross the hull; And
Inlet and outlet are formed so that the liquid can be introduced and discharged therein and includes a moving tank that moves linearly along the guide rail,
The guide rail is formed long in the direction crossing the two pontoons opposed to each other, the hypothesis ballast device of the semi-rigid line, characterized in that installed on the work temporary bridge for connecting the two pontoons with each other. The method of claim 1,
And a liquid supply unit for supplying a liquid to the moving tank through the inlet. The method of claim 2,
The liquid supply unit is a temporary ballast device for a semi-rigid ship, characterized in that for supplying seawater to the moving tank. The method of claim 3, wherein
The liquid supply unit
A seawater supply pump for pumping and supplying seawater; And
Seawater supply line connecting the seawater supply pump and the inlet of the moving tank
Hypothesis ballast device of a semi-rigid ship comprising a. The method of claim 1,
And a drive unit for linearly moving the moving tank along the guide rail. The method of claim 1,
Inlet and outlet of the moving tank is equipped with an on-off valve, respectively
The opening and closing valve is a semi-rigid ballast apparatus, characterized in that the operation is controlled through a separate control unit. The method of claim 1,
The guide rail is disposed in plural to be positioned respectively in the bow portion and the stern portion,
The movable tank is a temporary ballast device of a semi-rigid ship, characterized in that the movable rail is mounted to each guide rail. delete A method for adjusting the equilibrium of semi-rigid ships by adjusting the equilibrium state with respect to the semi-rigid ship in the quarrying process using the temporary ballast apparatus of the semi-rigid ship according to claim 1
Semi-rigber balance control method characterized in that for moving the moving tank along the guide rail or by adjusting the liquid storage amount of the moving tank to balance the hull. The method of claim 9,
And adjusting the heel state of the semi-rigid ship by moving the moving tank along the guide rail in a state where liquid is stored in the moving tank. The method of claim 10,
The guide rail is installed in the bow portion or the stern portion,
And controlling the trim state of the semi rig ship by adjusting the liquid storage amount of the moving tank through an inlet or outlet of the moving tank. The method of claim 10,
Install a plurality of the guide rail so as to be located in the bow and stern, respectively,
The movable tank is movable to each of the plurality of guide rails,
Method of balancing the semi-rigid line, characterized in that to adjust the trim state of the semi-rigid line by respectively adjusting the liquid storage amount of the plurality of moving tank through the inlet or outlet of the moving tank.

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