KR20130025736A

KR20130025736A - Pressurizing system of sea water fire line for floating structure

Info

Publication number: KR20130025736A
Application number: KR1020110089235A
Authority: KR
Inventors: 유해준
Original assignee: 대우조선해양 주식회사
Priority date: 2011-09-02
Filing date: 2011-09-02
Publication date: 2013-03-12

Abstract

PURPOSE: A pressurization system of a seawater fire line of a maritime structure is provided to easily install a jockey pump in a ship and to help economical design and improvement of productivity. CONSTITUTION: A pressurization system of a seawater fire line of a maritime structure includes a buffer tank(21) installed inside of the maritime structure and storing seawater; a jockey pump(25) pressurizing the fire line by receiving seawater from the fire line; a seawater supply line(31) providing a passage of seawater to supply seawater from the buffer tank to the jockey pump; a pressurization line providing a passage of seawater from the outlet side of the jockey pump to the fire line. The jockey pump is installed inside of the maritime structure.

Description

PRESSURIZING SYSTEM OF SEA WATER FIRE LINE FOR FLOATING STRUCTURE}

The present invention relates to a seawater fire fighting system installed in an offshore structure, and more particularly, to a pressurization system of a seawater fire fighting line of an offshore structure for pressurizing a fire fighting line of a seawater fire fighting system.

Marine structures such as drilling rigs, drill ships, FPSOs, support vessels, etc., have life-saving facilities for the safety of people in times of sea accidents, fire-fighting facilities for fire fighting in the event of a fire, Other disaster prevention facilities are provided.

Fire-fighting equipment consists of a thermal or soft fire detection device, a fire-fighting device, etc. In particular, a marine plant such as FPSO is equipped with a seawater fire fighting system for extinguishing using sea water.

Such a seawater fire fighting system pumps seawater through a caisoon installed outside the ship and transports it through a sea water fire line, and a sprinkler, hydrant, and fire monitoring device (end) at the end of the fire line. Fire extinguishing units such as fire monitors are installed.

Meanwhile, a pressurization system is installed in the seawater fire line to pressurize the seawater to maintain a constant pressure. The pressurization system pressurizes the seawater fire line by supplying seawater through the pressurization line and the pressurization line connected to the seawater fire line. It consists of a jockey pump.

In particular, in the case of offshore structures such as FPSOs, the jockey pump is mainly installed under the sea water offboard, so that the seawater is always supplied to the jockey pump. In order to install such jockey pumps under the sea water, additional equipment such as caisson, davit, duplex pipe, etc. are required. In addition, the jockey pumps require expensive submergible pumps. In addition to increasing the manufacturing cost required, there was a disadvantage of very low productivity.

The present invention has been devised in view of the above, by arranging a buffer tank and a seawater supply line to stably supply the seawater to the jockey side, the jockey pump can be easily installed on board, and thus economical The purpose is to provide a pressurization system for the seawater fire fighting line of offshore structures that can improve the design and productivity.

One aspect of the present invention for achieving the above object is a pressurization system of the seawater fire fighting line for pressurizing the seawater fire fighting line of the seawater fire fighting system in the marine structure, the buffer tank is installed in the marine structure to store seawater ; And a jockey pump configured to pressurize the fire line by receiving seawater from the buffer tank.

The jockey pump is characterized in that it is installed inside the marine structure.

The jockey pump is characterized in that consisting of a non-water pump.

A seawater supply line providing a seawater movement path so that the seawater is supplied from the buffer tank to the jockey pump, and a seawater movement path from the discharge side of the jockey pump to the fire line so that the jockey pump pressurizes the fire line. It characterized in that it comprises a pressing line.

It characterized in that it comprises a sea water supply pump for supplying sea water to the buffer tank.

The buffer tank is installed on the stern side of the hull, characterized in that the buffer tank is disposed adjacent to the ballast tank of the stern.

The buffer tank includes a port side buffer tank installed on the port side of the hull and a starboard side buffer tank disposed on the starboard side of the hull, and the port side buffer tank is connected to a port side seawater supply line, and the starboard side buffer tank. The starboard side seawater supply line is connected, and the jockey pump is connected to the end of the port side seawater supply line and the end of the starboard side seawater supply line.

Another aspect of the present invention is a pressurization system of a seawater fire fighting line for pressurizing a seawater fire fighting line of a seawater fire fighting system in an offshore structure, by installing a jockey pump inside the offshore structure using the seawater stored in the offshore structure the fire fighting line It is characterized by pressing.

According to the present invention as described above, by arranging a buffer tank for storing a certain amount of seawater on the ship, and configured to always supply a certain amount of seawater from the buffer tank to the jockey pump side, the jockey pump can be easily installed onboard, This eliminates the various accessories required to install the jockey pump on the outboard side, and can be applied as a low-cost non-submergible pump as a jockey pump, thereby improving economical design and productivity. There is an advantage to this.

1 is a view illustrating a configuration in which a buffer tank is installed on board in a pressurization system of a seawater fire fighting line of an offshore structure according to an embodiment of the present invention.
2 is a view showing the configuration of the jockey pump connected to the buffer tank in the pressurization system of the seawater fire line of the marine structure according to the present invention.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail. In addition, the following examples can be modified in various other forms, and the scope of the present invention is not limited to the following examples.

1 is a view illustrating a configuration in which a buffer tank is installed on board in a pressurization system of a seawater fire fighting line of an offshore structure according to an embodiment of the present invention.

As shown in Figure 1, the pressurization system of the seawater fire line of the marine structure according to the present invention is a buffer tank (21, 22) and a buffer tank (21, 22) side of the predetermined amount of sea water supply line 31, And a jockey pump 25, 26 connected via 32.

The offshore structure may be drilling rigs, drill ships, FPSOs, support vessels, and the like, preferably FPSO.

The buffer tanks 21 and 22 are installed on board, and a predetermined amount of seawater is stored in the buffer tanks 21 and 22. The buffer tanks 21 and 22 are configured to receive a predetermined amount of seawater through the seawater supply pump 1. Here, the seawater introduction line 2 connects the buffer tanks 21 and 22 and the seawater supply pump 1 to the seawater introduction line 2 so that the seawater moves from the seawater supply pump 1 to the buffer tanks 21 and 22. Is configured to provide a moving path. In this case, since the seawater supply pump 1 uses a device that is generally installed and used in an offshore structure such as FPSO, it does not require additional work or cost due to additional equipment.

As shown in FIG. 1, the buffer tanks 21 and 22 may be installed at the stern side of the hull, and in particular, may be installed adjacent to the stern ballast tanks 11, 12, 13.

2 is a view showing the configuration of the jockey pump connected to the buffer tank in the pressurization system of the seawater fire line of the marine structure according to the present invention.

As shown in FIG. 2, the buffer tanks 21 and 22 include a port side buffer tank 21 installed on the port side of the hull and a starboard side buffer tank 22 disposed on the starboard side of the hull. The port side seawater supply line 31 is connected to the buffer tank 21, and the starboard side seawater supply line 32 is connected to the starboard side buffer tank 32. Meanwhile, the port side seawater supply line 31 and the starboard side seawater supply line 32 may be connected to each other so that the connection pipe 33 may communicate with each other. The jockey pumps 25 and 26 may be connected to the end of each port side seawater supply line 31 and the end of the starboard side seawater supply line 32, respectively.

Since the jockey pumps 25 and 26 are configured to receive a certain amount of seawater from the buffer tanks 21 and 22 through the seawater supply lines 31 and 32, there is no need to install them under the seawater outside the marine structure, in particular the jockey pump. (25, 26) is easy to install in the length of the interior of the marine structure, etc. can be arranged closer to the seawater fire line (41, 42) side, thereby reducing the length of the pipe line, in particular Unlike the pressurization system, the jockey pumps 25 and 26 do not need to be installed outside of the offshore structure, so the auxiliary equipment for the installation of the jockey pumps 25 and 26 (for example, caisson, davit, Duplex pipes, etc. are not required, which can effectively implement economical design and productivity improvement.

Pressurization lines 35 and 36 are connected to the discharge side of the jockey pumps 25 and 26, respectively, and the pressurization lines 35 and 36 are connected to the seawater fire line 41 and 42, respectively. By providing a seawater movement path to the seawater to the seawater fire line (41, 42), the seawater fire line (41, 42) is pressurized by the jockey pump (25, 26) so that the pressure is constant maintain.

According to the present invention as described above, the buffer tank (21, 22) capable of storing a certain amount of sea water is disposed in the interior of the marine structure, and a certain amount of sea water from the buffer tank (21, 22) jockey pump (25, 26) According to the present invention, the jockey pumps 25 and 26 can be easily installed inside the offshore structure, unlike the prior art, and the jockey pumps 25 and 26 can be installed on the outside of the offshore structure. In addition to the omission of accessories, low-cost non-submergible pumps can be easily applied as the jockey pumps 25 and 26. This has the advantage of enabling economical design and productivity improvement.

In particular, according to the present invention, since the jockey pumps 25 and 26 composed of low-cost non-submergible pumps can be installed inside the offshore structure, it is necessary to apply an expensive submersible pump unlike the prior art. There is an advantage that can significantly reduce the manufacturing cost.

As described above, the pipe shoe fixing member of the marine structure according to the present invention has been described with reference to the illustrated drawings, but the present invention is not limited to the above-described embodiments and drawings, and the present invention within the claims. Of course, various modifications and variations can be made by those skilled in the art.

11, 12, 13: ballast tanks 21, 22: buffer tank
25, 26: jockey pump 31, 32: seawater supply line
35, 36: pressure line

Claims

It is pressurization system of seawater fire fighting line to pressurize seawater fire fighting line of seawater fire fighting system in offshore structure,
A buffer tank installed inside the marine structure to store seawater; And
And a jockey pump for pressurizing the fire line by receiving the sea water from the buffer tank.

The method according to claim 1,
The jockey pump is pressurized system of the seawater fire line of the marine structure, characterized in that installed inside the marine structure.

The method according to claim 1 or 2,
The jockey pump is a pressurization system of the seawater fire line of the marine structure, characterized in that consisting of a non-water pump.

The method according to claim 1,
A seawater supply line providing a seawater movement path so that seawater is supplied from the buffer tank to the jockey pump;
And a pressurizing line for providing a movement path of seawater from the discharge side of the jockey pump to the fire fighting line so that the jockey pump pressurizes the fire fighting line.

The method according to claim 1,
And a seawater supply pump for supplying seawater to the buffer tank.

The method according to claim 1,
The buffer tank is installed on the stern side of the hull, the buffer tank is pressurized system of the seawater fire line of the marine structure, characterized in that disposed adjacent to the ballast tank of the stern.

The method according to claim 1 or 6,
The buffer tank includes a port side buffer tank installed on the port side of the hull and a starboard side buffer tank disposed on the starboard side of the hull, and the port side buffer tank is connected to a port side seawater supply line, and the starboard side buffer tank. The starboard side seawater supply line is connected, the end of the port side seawater supply line and the end of the starboard side seawater supply line pressurization system of the seawater fire line of the marine structure, characterized in that the jockey pump is connected.

It is pressurization system of seawater fire fighting line to pressurize seawater fire fighting line of seawater fire fighting system in offshore structure,
Installing a jockey pump inside the offshore structure pressurizes the fire line using seawater stored in the offshore structure.