JP3070054U - Oil leakage combing of twin trunk expansion trunk - Google Patents

Abstract

(57) [Summary] [Problem] To prevent oil leakage, it is sufficient to increase the height of combing, but considering traffic or drainage of the inflated trunk and upper deck, the limit is about 300 mm. Considering oil leakage from pipe connections, overflow due to mishandling, heel or trim during cargo handling, oil leakage during cargo handling during stormy weather, and swaying of the ship, a large flat surface that is 60 to 70% of the ship width However, the amount of oil leakage was not always secured, and it was not necessarily safe. SOLUTION: Expansion trunks 21 and 22 are provided on the starboard side and port side, respectively, and the oil leaking onto the expansion trunks 21 and 22 is to be collected in an oil sump between the expansion trunks 21 and 22. Sometimes inflated trunks 21, 22
At the time of voyage, the gate 7 provided on the weir plate 6 is opened and the expansion trunks 21 and 22 are opened.
It is intended to drain the seawater poured in between to the rear.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 This invention relates to an oil leakage system for a ship having an expansion trunk on an upper deck of an oil tanker, a chemical tanker, and the like.

[0002]

[Prior art]

 As shown in FIG. 3, the prior art has an inflatable trunk 102 provided on an upper deck 101 at a width of 60 to 70% of the ship width over the entire length of a fuel tank 103.

In general, a combing 104 of 100 to 300 mm is provided around the expansion trunk 102 as a measure against oil leakage.

[0004] As shown in FIG. 4, the inflatable trunk 102 is disposed at the center of the hull of the upper deck 101, and the oil leak receiver is formed in a single plane by the combing 104 around the entire periphery of the inflatable trunk 102. .

[0005]

[Problems to be solved by the invention]

 As described in the prior art, to prevent oil leakage, it is sufficient to increase the height of combing, but considering traffic or drainage of the inflated trunk and upper deck, the limit is about 300 mm. Taking into account oil leakage from the connection of cargo handling pipes, overflow due to mishandling, heel or trim during cargo handling, oil leakage during cargo handling in rough weather, and sway of the ship, it is 60 to 70% of the ship width. On a large flat surface, the amount of oil leakage received was not always secured, and it was not always safe.

The present invention has been made in view of such inadequacy of the prior art, and has as its object to separate the expansion trunk into a starboard port and a port side, and to interpose an oil leakage reservoir between them. The oil leaked from the inflatable trunk is to be prevented from leaking into the sea.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides an inflatable trunk on the upper deck on each of the port and starboard sides, substantially over the entire length of the oil tank, and a combing on the side of the inflatable trunk on the ship. A side wall is provided at a center line portion of the inflatable trunk, a combing is provided at a bow portion of the inflatable trunk, and a combing at the same height as the combing on both sides is provided between the inflatable trunks. A combing plate is provided between the inflatable trunks at the level of the top of the inflatable trunk, and a combing at the same height as the combing on both sides is provided at a rear portion of the inflatable trunk. Is provided with a weir plate to form an oil leakage reservoir.

An openable gate is provided on the weir plate, and the gate is closed during cargo handling and is open during voyage.

[0009]

[Embodiment of the invention]

 In this invention, expansion trunks are provided on the starboard side and port side, respectively, and the oil leaking on the expansion trunks is to be collected in the oil sump between the expansion trunks. At the time of voyage, the gate provided on the weir plate is opened to attempt to drain the seawater poured between the expansion trunks to the rear.

[0010]

【Example】

 As shown in FIG. 1 and FIG. 2, the invented technique is provided with inflatable trunks 21 and 22 on the upper deck 1 on the port and starboard sides, each having a width of 60 to 70% of the width of a single ship. The inflatable trunks 21 and 22 are provided with the stern ends partially missing without being continuous to the front wall of the stern tower deck.

The side walls of the inflatable trunks 21 and 22 on the ship side are provided with combings 41 and 41 that are 100 to 300 mm thicker than the top plates of the inflatable trunks 21 and 22.

The side walls 44, 44 of the center lines of the inflatable trunks 21, 22 are provided with a combing area of about 15 mm from the top plate of the inflatable trunks 21, 22, but this is a welding margin.

The front walls of the bows of the inflatable trunks 21 and 22 are provided with a combing 42 of 100 to 300 mm from the top of the inflatable trunks 21 and 22. The combing 421 is provided up to the same height as the combing 42 or the combing 42 is provided continuously.

The rear walls of the stern portions of the inflatable trunks 21 and 22 are provided with a combing 43 of 100 to 300 mm from the top of the inflatable trunks 21 and 22. The crossover 5 is provided at the top plate level, and the combing 431 is provided at the rear of the crossover 5 to the same height as the combing 43 on both sides.

A weir plate 6 is provided between the inflatable trunks 21 and 22 at the stern of the inflatable trunks 21 and 22 up to the top plate of the inflatable trunks 21 and 22.

The weir plate 6 is provided with a gate 7 that can be opened and closed. The gate 7 is closed during loading and unloading. Shall be in the open state and the seawater poured between the expansion trunks will be drained to the rear.

Further, between the expansion trunks 21 and 22, steel grid-like bridge plates 51 are provided at several places at the top plate level of the expansion trunks 21 and 22, and are used for starboard and port traffic.

[0018]

[Effect of the invention]

 Since the present invention is configured as described above, the following effects can be obtained. In this invention, the expansion trunk was separated into starboard and port side, and the oil leakage was collected between them.Those that leaked on the expansion trunk would collect in the oil leakage reservoir, and the oil leakage would be deeper. Since it is narrow in the width direction, it has a sufficient volume. Even if the ship slightly shakes in stormy weather, it does not leak from the oil spill tank and does not flow to the sea. At the time of voyage, the gate of the weir plate will be opened to discharge the seawater from the oil spill reservoir for safe voyage.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of an upper deck of a fuel oil tank according to the present invention from the rear of a ship.

FIG. 2 is a schematic cross-sectional view of the oil tank and the expansion trunk of the present invention.

FIG. 3 is a perspective view schematically showing the upper deck of a conventional oil tank in a rear view of a ship.

FIG. 4 is a schematic cross-sectional view of a conventional oil tank and an expansion trunk.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper deck 21 Expansion trunk 22 Expansion trunk 3 Filling oil tank 41 Coming 42 Coming 421 Coming 43 Coming 431 Coming 44 Combing 5 Crossing board 51 Crossing board 6 Weir board 7 Gate

Claims (2)

[Utility model registration claims] 1. An inflatable trunk is provided on the upper deck on each of port and starboard, and is provided substantially over the entire length of the oil tank.
A combing is provided on the side of the inflatable trunk, a side wall is provided on a center line portion of the inflatable trunk, and a combing is provided on the bow of the inflatable trunk. A combing is provided, a combing is provided at the stern portion of the inflatable trunk, and a bridging plate is provided between the inflatable trunks at the level of the top plate of the inflatable trunk. Oil leakage combing for a twin trunk type expansion trunk, wherein a dam plate is provided between the expansion trunks at the stern portion to form an oil leakage reservoir. 2. An openable / closable gate is provided on the weir plate,
2. The oil leakage combing of the catamaran-type inflatable trunk according to claim 1, wherein the gate is closed during cargo handling and is open during voyage.