KR20150136828A - Bilge and fire system for drillship - Google Patents

Bilge and fire system for drillship Download PDF

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Publication number
KR20150136828A
KR20150136828A KR1020140064347A KR20140064347A KR20150136828A KR 20150136828 A KR20150136828 A KR 20150136828A KR 1020140064347 A KR1020140064347 A KR 1020140064347A KR 20140064347 A KR20140064347 A KR 20140064347A KR 20150136828 A KR20150136828 A KR 20150136828A
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South Korea
Prior art keywords
pump
bilge
complex
fire
line
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KR1020140064347A
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Korean (ko)
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정성규
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대우조선해양 주식회사
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Priority to KR1020140064347A priority Critical patent/KR20150136828A/en
Publication of KR20150136828A publication Critical patent/KR20150136828A/en

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
    • A62C3/10—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles in ships
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
    • A62C37/10—Releasing means, e.g. electrically released
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

A bilge and digestion system of a drill ship is disclosed. The bilge and fire extinguishing system of a drill ship of the present invention is a composite pump provided in a hull and used both for fire and for biling; A digestive water line connected to the seachest at one side and to the complex pump at the other side; And a bilge line connected to the complex pump to supply the bilge to the complex pump, wherein the bilge line is joined to the digestion water line to combine the complex pump for digestion and bilge.

Figure P1020140064347

Description

{BILGE AND FIRE SYSTEM FOR DRILLSHIP}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bilge and fire extinguishing system for a drill ship, and more particularly, to a bilge and fire extinguishing system for a drill rig capable of reducing the cost by combining a pump used for fire extinguishing and a pump used for bilge .

With the rapid development of international industrialization and industry, the use of earth resources such as oil is gradually increasing, and thus the stable production and supply of crude oil is becoming an increasingly important issue globally.

For this reason, recently marginal field or deep-sea oil development has been economically feasible, which has been neglected due to economic difficulties so far. Therefore, with the development of submarine mining technology, drilling facilities suitable for the development of such oilfields A drilling rig equipped with a hull has been developed.

Conventional submarine drilling has been mainly used for a rig ship or a fixed platform for underwater drilling which can be sailed only by other tugboats and which is used for drilling underwater at anchor point on the sea using a mooring device.

In recent years, however, drill ships and semi-submersible rigs have been developed that are equipped with advanced drilling equipment and built in the same form as general ships so that they can navigate with their own power, And has been used in production.

In order to develop small-scale oilfields, drilling rigs are designed to be able to navigate powerlessly without a tugboat, depending on the working conditions that need to be moved frequently.

On the other hand, a fire system and a bilge system are installed in the drill ship to suppress the fire. "Bilge" means that water leaking from the shell or pipe through the ship, water contaminated with oil from the deck, or water from the cargo is placed on the bottom of the vessel, and the wastewater is borrowed .

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic diagram of a fire system in a conventional drill string.

As shown in FIG. 1, in the conventional drill ship, two fire pumps are provided on the stern section, and one fire pump is provided on the forefront part. The fire pump pumps seawater from a seastest (SC) For example, drill floors, engine rooms, thruster rooms, well test areas, and the like.

Further, in the conventional drill ship, a bilge system is provided to handle bilge, and the bilge system is configured to purge and discharge the above-mentioned bilge.

Generally, a bilge system for discharging such bilge to the outside of the hull as the bilge (wastewater to be kept at the bottom) becomes flooded due to seawater, rainwater or various other causes even when the ship is under voyage or berth .

A conventional bilge system includes a bilge pump for pumping bilge, and a total of four bilge pumps are provided, two at the forward portion and two at the aft portion.

In addition, the bilge pumps are used separately from the above-mentioned fire pumps. In the case of the fire pump and the bilge pump, the number of times of use thereof is small compared to the number of the installation.

Recently, as the drilling area has been transferred to the deep sea, drilling rigs have been increasing in price due to the installation of equipment for deep drilling. Therefore, it is required to take measures to reduce cost by eliminating unnecessary equipment.

Korean Patent Laid-Open Publication No. 2012-0038162 (Samsung Heavy Ind. Co., Ltd.) 2012.04.23.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a bilge and fire extinguishing system capable of reducing the number of installed fire pumps and bilge pumps, which are considerably less frequently used in drilling rigs.

According to an aspect of the present invention, there is provided a composite pump provided in a hull and used for both fire and bilge; A digester water line connected to the seachest at one side and to the complex pump at the other side; And a bilge line connected to the complex pump and supplying a bilge to the complex pump, wherein the bilge line is joined to the digestion water line, and the complex pump is used in combination for digestion and bilge A bilge drilling rig and a fire extinguishing system can be provided.

The composite pump may be provided with a pair at the forefront portion and a total of four pairs at the stern portion.

The line connecting each of the complex pumps may form a closed loop.

And a pair of composite pumps provided on the stern section may be respectively provided in the port side outermost pump room and the star outermost side pump room, respectively.

And a pressure maintaining pump provided in the forefinger's machine room to maintain the extinguished water line at a predetermined pressure.

And a backflow prevention valve provided on a line connecting the complex pump and the body cavity to prevent bilge from being supplied to the body cavity.

The embodiments of the present invention can provide a combined pump that can be used in combination with a fire pump and a bilge pump for fire and bilge by combining a digestion water line and a bilge line with a remarkably low frequency of use in a conventional drill ship, Which will strengthen competitiveness in order.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic diagram of a fire system in a drill rig in one embodiment of the prior art.
FIG. 2 is a schematic view of a major part of a bilge and fire fighting system of a drill rig according to an embodiment of the present invention.
3 is a cross-sectional view schematically illustrating a stern section of a drill rig in an embodiment of the present invention.
Figure 4 is a schematic plan view of the pump room shown in Figure 3;
Fig. 5 is an enlarged view of the area "A" in Fig. 3, and is a perspective view schematically showing the fire extinguisher number monitor.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

FIG. 2 is a schematic view of a major part of a bilge and fire fighting system of a drill rig according to an embodiment of the present invention.

As shown in this drawing, the bilge and fire extinguishing system of the drill rig according to the present embodiment includes a composite pump 10 provided on the hull to be used for fire and bilge, and one side is connected to a sechest (SC) And the other side is connected to the composite pump 10 by being joined with the digestion water line 20 and the bilge water line 20 connected to the composite pump 10 to supply the bilge to the composite pump 10, A pressure maintaining pump 40 provided in the machine room of the forefront and keeping the digestion water line 20 at a constant pressure and a check valve 50 for preventing the backflow of the bilge discharged from the bilge line 30, .

The composite pump 10, as shown in FIG. 1, is provided at both the forward and aft portions and serves to selectively pump seawater or bilge.

In this embodiment, the composite pump 10 is capable of selectively pumping seawater or bilge water because the bilge line 30 is joined to the digester water line 20 unlike the prior art.

Conventionally, a line for supplying seawater in the event of a fire and a line for supplying bilge are provided separately, respectively, and they are connected to a digester water pump and a bilge pump, respectively. In addition, there were seven pumps, three for digestion water pump and four for bilge pump, and it was inefficient considering the frequency of use of digestion water pump and bilge pump such as line connecting each pump.

The present embodiment solves the conventional ineffective surface by eliminating the bilge pump and connecting the extinguishing water line 20 and the bilge line 30 to the extinguishing water pump to provide the composite pump 10.

In the present embodiment, as shown in Fig. 2, the composite pump 10 can be provided with two total of four at two aft portions, and the composite pump 10 provided at the aft portion is provided with a port edge It can be provided on the edge of the starboard.

As shown in FIG. 2, the digester water line 20 is connected at one side to the body sack SC and at the other side to the complex pump 10 so that seawater is supplied to the complex pump 10 during a fire . Also, in the present embodiment, the digester water line 20 may be connected to each of the complex pumps 10 so that the waste water is supplied in a closed loop. Further, as shown in FIG. 2, a joining line 60 may be provided in a central region of the digestive water line 20 constituting a closed loop, so that the digestive water can be urgently supplied to the central region.

The bilge line 30 may be provided on both the fore part and the aft part, as shown in FIG. 2, and may be joined to the digestive water line 20 at the stern endmost and the forefront forefront, .

As shown in Fig. 2, the pressure maintenance pump 40 can be disposed at the forefront portion, and the water extinguishing system can be installed in the piping by the leakage of the function of the facility, erroneous operation, When the pressure drops, it replenishes a small amount of pressure and maintains the constant water pressure necessary for the fire extinguishing work in the normal piping. In this way, the fire extinguisher is discharged promptly from the discharge port in case of fire, so that the fire extinguishing water can be immediately responded.

In this embodiment, the pressure maintenance pump 40 is connected to the body septe SC and is capable of pumping seawater as shown in Fig. 2, and a pair is provided in parallel and pumped by the pressure maintenance pump 40 The seawater is supplied to the digester water line (20).

As shown in FIG. 2, the check valve 50 is provided on a line connecting the complex stunt SC and the complex pump 10, and serves to prevent the bilge from being supplied to the stern SC.

In this embodiment, the check valve 50 includes a check valve.

FIG. 3 is a cross-sectional view schematically illustrating a stern portion center of a drill rig in an embodiment of the present invention, and FIG. 4 is a schematic plan view of the pump room shown in FIG.

A part of the complex pump 10, the digester water line 20, and the bilge line 30 described above in this embodiment can be provided in the pump room 70 shown in Fig.

In the present embodiment, three pump rooms 70 may be provided in the width direction of the hull, as shown in FIG. 4, and the composite pump 10 may be provided with three pump rooms 70, And may be provided in the port-side pump room 70. This is to ensure the smooth supply of fire water and the shortest line length in the event of a fire.

On the other hand, the composite pump 10 and the pressure maintaining pump 40, which are not shown, but are disposed at the bow portion, may be provided in the engine room on the bottom of the boat.

Fig. 5 is an enlarged view of the area "A" in Fig. 3, and is a perspective view schematically showing the fire extinguisher number monitor.

The present embodiment has a fire extinguisher monitor 100 capable of spraying fire extinguishing water into a large area in a dangerous area when a fire occurs in a dangerous area including a well test area 80 and a drill floor.

The well test area 80 and the drill floor are classified as dangerous areas because of the possibility of remaining explosive gas. The well test area 80 can contain explosive gas in the well test equipment during the testing of the well and the drill floor is always in vertical position with the drilling equipment and well, There is a danger.

Conventionally, in preparation for a fire in such a dangerous area, a pipe and an injection nozzle surrounding the entire dangerous area are provided to prepare for a fire. However, in this case, since piping and injection nozzles should be installed so as to surround the entire dangerous area, it was not efficient because of a lot of work hours and work hours.

In terms of maintenance, it is difficult to find any leaks even if leaks occur in any one of the pipelines, and it takes a lot of time and money to perform the leaking tests.

The present embodiment solves this problem by providing the fire extinguishing water monitor 100 shown in Fig. 5 in a wide area.

Providing the fire extinguishing water monitor 100 of this embodiment can significantly reduce the amount of piping and the quantity of the injection nozzles, thereby reducing the design and production time.

As shown in FIG. 5, the fire extinguishing water monitor 100 includes a main body 110 having an inlet through which fire extinguishing agents are introduced and an outlet through which the fire extinguishing agent is introduced to extinguish a fire, 110). ≪ / RTI >

The main body 110 is provided by connecting a plurality of pipes 111 to each other such that water or foam can flow into the inside of the main body 110. The plurality of pipes 111 are connected to each other by bolts, . ≪ / RTI >

5, a handle 112 is provided on one side of the main body 110, that is, the pipe 111 in the direction in which the extinguishing agent flows out. Although not shown, respective rings are provided between one pipe 111 and a pair of pipes 111 disposed between a pair of pipes 111 in a region where the handle 112 is provided, and a pair of pipes One of the pipes 111 disposed between the pair of pipes 111 is pivoted with respect to the pair of pipes 111 so that the injection angle of one of the pipes 111 can be adjusted.

The nozzle 120 is coupled to the pipe 111 in the region where the extinguishing water is discharged, and serves to inject the extinguishing water to a long distance. The outlet of the nozzle 120 may be larger than the diameter of the pipe 111 so that a large amount of extinguishing water is discharged.

Meanwhile, since the extinguishing agent such as water or foam flows into the main body 110 composed of the plurality of pipes 111, the main body 110 generates considerable vibration. Thus, to prevent such vibrations, the present embodiment includes a damping module 130.

2, the damping module 130 includes a module body 131 coupled to one side of the main body 110 in a manner of a bolt connection or a welded connection, A vibrating support plate 132 protruding from the upper side of the module body 131 and an upper side coupled to the pipe 111 of the main body 110 while the other side of the vibrating support plate 132 And a vibration transmitting member 133 that is supported on the side surface and transmits the vibration generated in the main body 110 to the vibration supporting plate 132.

The fire extinguishing water monitor 100 according to the present embodiment can be provided not only in the dangerous area but also in a wide area as described above and can be connected to the complex pump 10 and the fire extinguisher line 20, It is possible. That is, the description of FIG. 2 described above can be applied to the extinguishing water monitor 100 as it is.

As described above, according to the present embodiment, a fire pump and a bilge pump, which have a remarkably low frequency of use in a conventional drill ship, can be combined into a single complex pump for fire use and bilge use by merging a digestion water line and a bilge line By reducing manufacturing costs, we can strengthen order competitiveness.

In addition, by applying the fire extinguishing water monitor instead of the piping and the spray nozzle surrounding the entire area having a large area, it is possible to reduce the quantity of piping and the quantity of the spraying nozzle which are remarkably small, and to reduce the design and production time accordingly have.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

1: Drill ship 10: Compound pump
20: digestion line 30: bilge line
40: pressure maintaining pump 50: backflow prevention valve
60: Join line 70: Pump room
80: Well test area 100: Digestion number monitor
110: main body 120: nozzle
130: Damping module P: Fire pump
SC: Chastest

Claims (6)

A composite pump provided in the hull for both fire and bilge;
A digester water line connected to the seachest at one side and to the complex pump at the other side; And
And a bilge line connected to the complex pump to supply a bilge to the complex pump,
Wherein the bilge line is joined to the digestion water line, and the complex pump is used in combination for digestion and bilge operations. The method according to claim 1,
Wherein the composite pump is provided with a pair at the forefront portion and a total of four pairs at the stern portion. The method of claim 2,
Wherein the lines connecting the respective complex pumps form a closed loop. The method of claim 2,
Further comprising a pump room provided with three hulls in the width direction,
Wherein the pair of complex pumps provided on the stern section are respectively provided in the port outdoor ultimate pump room and the star outdoor ultimate pump room, respectively. The method according to claim 1,
And a pressure maintaining pump provided in the forefinger's machine room to maintain the digested water line at a constant pressure. The method according to claim 1,
Further comprising a backflow prevention valve provided on a line connecting the complex pump and the body hest to prevent bilge from being supplied to the body stew.
KR1020140064347A 2014-05-28 2014-05-28 Bilge and fire system for drillship KR20150136828A (en)

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