JPH04119295U - Oil tank structure of oil tank ship - Google Patents

Abstract

(57) [Summary] [Purpose] In order to minimize oil leakage when a hole is created in the bottom of an oil tanker due to grounding, etc., the oil tank is divided into upper and lower parts by a horizontal bulkhead, and the part where the hole is located is The oil pressure is reduced. Conventionally, this bulkhead is made of iron, which increases the weight and cost of the ship, and it is also difficult to clean the oil tank because it is dark, so these drawbacks will be improved. [Structure] A bracket 10 with two flat surfaces, upper and lower, is attached to the inner wall of the oil tank in the longitudinal direction of the ship, and the horizontal bulkhead 6 is foldable. It is attached to the surface 10a, and an O-ring 8 is provided on the upper surface 10b of the bracket, so that the upper and lower oil tanks are oil-tight when the partition wall 6 is in an extended state.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to an oil tank structure for an oil tank ship.

0002

[Conventional technology]

Minimize oil leakage when a hole opens in the bottom of an oil tanker due to grounding, etc. For this purpose, a horizontal partition system in which an oil tank is divided into upper and lower halves is well known. Figure 3 shows that This figure shows a cross section of the oil tank of an oil tanker, in which there is water in addition to the upper deck 2 and bottom shell 4. A flat bulkhead 3 is fixed to the inner plate 5' of the ballast tanks 5 on both sides. Also, Figure 4 This is an arrow view of the IV-IV cross section in Figure 3, which is a part of the cross section of the ship, and the horizontal bulkhead 3 as shown in the figure. are arranged in the front and rear directions of the ship.

0003

[Problem that the idea aims to solve]

However, these conventional fixed horizontal bulkheads are made of steel, like the hull structure. This is part of the structural strength and increases the ship's weight. Also oil The oil tank is divided into upper and lower parts, and it is dark, so cleaning the inside of the oil tank can be a hassle. There is a drawback. This invention was proposed in view of these circumstances, and it avoids adding excessive weight to the hull. It can brighten the inside of the oil tank and make cleaning work easier. The purpose is to provide an oil tank structure for an oil tanker.

0004

[Means to solve the problem]

Therefore, the present invention is based on the structure of an oil tank for an oil tanker, in which the tank is divided into upper and lower halves by a horizontal bulkhead. In this construction, the horizontal bulkhead is attached to the inner wall of the oil tank in the longitudinal direction of the ship, and has two upper and lower sides. A bracket with two flat surfaces and a synthetic resin honeycomb material are integrated into a V-shape horizontally. It is formed into a triangular wave shape, and is formed by rollers installed on both sides of the bottom of the V-shape. A folding member is attached to the lower surface of the bracket so as to be foldable in the length direction of the ship. a collapsible diaphragm attached to the upper surface of the bracket, the diaphragm being flat; Equipped with an O-ring that forms an oil-tight structure between the lower edge of the diaphragm and the lower edge of the diaphragm when the It is characterized by

[0005]

[Effect]

According to this configuration, the partition wall that partitions the upper and lower parts of the oil tank is made of synthetic resin honeycomb or the like. Since it is made of lightweight material, the weight of the ship can be significantly reduced, and the bulkhead is foldable. It can be folded to let in light and makes cleaning easier.

[0006]

【Example】

To explain one embodiment of the present invention with reference to the drawings, the same reference numerals as in FIG. 3 are the same. Fig. 1 shows the cross section of the foldable triangular wave-shaped member. The folding of the bulkhead 6 takes place in the longitudinal direction of the ship. Also, Figure 2 shows the II-II arrow view in Figure 1. The figure shows a cross section, and the bent part 7 of the bulkhead 6 is a roller that helps the ship move in the longitudinal direction. The partition wall has a bracket 10 attached to the oil tank inner wall plate 5' through the bracket 9. It rests on the lower surface 10a of. Above this bracket surface 10a and the upper bracket surface 10b, there is an O to maintain oil tightness. When the ring 8 is installed around the periphery and the fold of the partition wall 6 is extended and becomes horizontal, its lower surface is in close contact with the O-ring 8 to maintain oil tightness between the upper and lower oil tanks. When loading oil, load the lower tank first, and when unloading, load the upper tank first. Lower the tank first so that the weight of the oil in the upper tank does not touch the folding bulkhead 6. I will do it.

[0007]

[Effect of the idea]

According to the present invention, even if a hole opens in the tank due to a grounding, the horizontal bulkhead 6 will only be affected by the head between the oil level I _O and the sea surface I _W shown in FIG. It does not require much strength and lightweight materials can be used, thus significantly reducing the structural weight. Further, when cleaning the lower oil tank, the horizontal partition wall 6 is folded, so light can be let in and the inside of the oil tank can be cleaned easily. In short, according to the present invention, in the oil tank structure of an oil tank ship in which an oil tank is divided into upper and lower halves by a horizontal bulkhead, the horizontal bulkhead is attached to the inner wall of the oil tank in the longitudinal direction of the ship, and has a bracket having two upper and lower planes; A synthetic resin honeycomb material or the like is molded into a triangular wave shape with V-shapes integrally arranged horizontally, and can be folded in the length direction of the ship onto the lower surface of the bracket using rollers provided on both sides of the bottom of the V-shape. a foldable diaphragm attached to the bracket; and an O-ring attached to the upper surface of the bracket and forming an oil-tight structure between the diaphragm and the lower edge of the diaphragm when the diaphragm becomes flat. The present invention is industrially extremely useful because it provides an oil tank structure for an oil tank ship that does not add excessive weight to the ship's hull and can brighten the inside of the tank to facilitate cleaning work. .

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of an oil tank structure of an oil tanker according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1;

FIG. 3 is a cross-sectional view showing an oil tank structure of a conventional oil tank ship.

FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3;

[0008]

[Explanation of symbols]

1 Draft surface 2 Upper deck 3 Horizontal bulkhead 4 Bottom shell plate 5 Ballast tank 5’ Oil tank inner wall 6 Folding bulkhead 7 Bend part of folding bulkhead 8 Oil-tight O-ring 9 Laura 10 Bracket 10a side 10b side

Claims (1)

[Scope of utility model registration request] 1. An oil tank structure for an oil tank ship in which an oil tank is divided into upper and lower halves by a horizontal bulkhead, wherein the horizontal bulkhead is attached to an inner wall of the oil tank in the longitudinal direction of the ship, and includes a bracket having two upper and lower planes, and a synthetic resin A honeycomb material or the like is formed into a triangular wave shape in which V-shapes are integrally arranged horizontally, and is attached to the lower surface of the bracket so that it can be folded in the length direction of the ship by rollers provided on both sides of the bottom of the V-shape. and an O-ring that is attached to the upper surface of the bracket and forms an oil-tight structure between the diaphragm and the lower edge of the diaphragm when the diaphragm is flat. Oil tank structure of an oil tank ship.