JPS58202186A - Independent tank supporting structure in ship - Google Patents

Abstract

PURPOSE:To allow the sliding by expansion or shrinkage of tanks for widening the supporting area of the tanks by a method in which a valley-shaped groove by inclined bottom plates is formed on each bottom of left and right-handed side tanks, and the inclined bottom plates on the sides are supported through a supporting material on the ship's bottom. CONSTITUTION:In a ship, port and starboard side tanks are formed by dividing the inside of an independent tank into two sections by a vertical bulkhead 1a, and a valley-shaped groove 3 fromed by the port and starboard sides inclined bottom plates is provided on each bottom of the both side tanks. The grooves 3 are positioned on the center line side of the hull from the centers of the left and right-handed side tanks, and the inclined bottom plate 2 on the side among the both sides inclined bottom plates is supported on the ship's bottom through supporting parts 4 and 5. Thus, the supporting area can be sufficiently widened by making a sufficient allowance for sliding due to the expansion and shrinkage of the tanks.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support structure for an independent tank provided in a ship, and particularly to an inboard independent tank support structure suitable for use in a ship carrying high viscosity cargo.

Conventionally, the tank shape of a high-temperature cargo carrier using an independent tank system is based on a mixture of coal particles and oil.
oil m1xture (hereinafter referred to as rcOMj) when transporting high viscosity cargo.

For its discharging performance, as shown in Figure 1, it is necessary to form a valley-shaped groove 3 at the bottom of each of the port and starboard tanks 1 with the left and right inclined bottom plates 2. This port and starboard tank 1 is an integrated independent structure. Since it is a tank, it needs to be supported at the bottom of the ship with supporting materials.1 Normally, the arrangement of supporting materials 4 as shown by diagonal lines in Figure 2.3 is considered.0 By the way, since the cargo is high temperature, , the tank 1 tries to expand, but the one shown in FIG. 2 does not allow any lateral expansion of the bottom, which may lead to destruction of the tank 1 or the support 4. Further, in the case shown in FIG. 3, due to the lateral expansion, although portions a are in contact with each other, portions b are lifted up, creating a gap and no longer serving as a support.

A possible arrangement of the supporting members 4 is shown in FIG.
There are concerns that the support reaction force is large and the support reaction force is large, resulting in lack of reliability.

The present invention aims to solve these problems, and aims to provide an independent inboard tank support structure that allows for slippage due to expansion and contraction of the tank, while also allowing for a wide support area. purpose.

For this reason, the inboard independent tank support structure of the present invention is provided with port and starboard tanks formed by dividing the interior of the independent tank into two by a longitudinal bulkhead, and a left and right inclined bottom plate formed at the bottom of each of these port and starboard tanks. These grooves are arranged from the center of each port and starboard tank toward the hull center line, and the inclined bottom plate closer to the ship's side of the left and right inclined bottom plates supports the supporting material. It is characterized by being supported on the bottom of the ship.

Hereinafter, embodiments of the present invention will be explained with reference to the drawings.
FIG. 5 is an explanatory diagram showing the concept of the present invention in comparison with FIGS. 2 to 4, and FIG. 6 is a cross-sectional view of the ship's hull showing an inboard independent tank support structure as an embodiment of the present invention.

As shown in FIG. 5, in the present invention, the groove portions 3 of the port and starboard tanks 1 are arranged closer to the hull centerline from the center of the port and starboard tanks 1, and the left and right inclined bottom plates 2 forming each groove portion 3 are The sloping bottom plate closer to the side of the ship is supported by the bottom of the ship via the support member 4.

Next, details of the inboard independent tank support structure of the present invention will be explained with reference to FIG. The bottom of each tank 1 is provided with a valley-shaped groove 3 formed by the left and right inclined bottom plates 2 in order to minimize residual cargo. The large bones 1b along the longitudinal direction and the small bones 1C in the longitudinal direction are attached and reinforced.
It is arranged closer to the hull centerline from the center, and therefore, of the left and right inclined bottom plates 2, 2, the inclined bottom plate closer to the gunwale side is larger and wider.

In the independent tank support structure of the present invention, the above-mentioned inclined bottom plate 2 closer to the port side is supported on the bottom of the ship via the main frame 1bi and the support member 4'f attached to the outer surface thereof, and During thermal expansion and thermal contraction, each tank l can slide smoothly along the large support member 4 of length t facing the wide inclined bottom plate 2, and the overhang is also reduced, so that the support reaction force is reduced. This has the advantage of being smaller, increasing reliability in terms of strength.

In addition to the support member 4 along the cross section of the ship, a support member 5 may be provided in the ship's ship direction. The interior of the independent tank is divided into two by a longitudinal bulkhead to form port and starboard tanks, and each of the port and starboard tanks is provided with a valley-shaped groove formed by the left and right inclined bottom plates at the bottom. It has a simple structure in which the groove portion is arranged from the center of each starboard tank toward the center line of the ship, and the inclined bottom plate closer to the ship's side of the left and right inclined bottom plates is supported by the bottom of the ship via a support member. , COM, etc., while fully allowing for slippage due to expansion and contraction of the tank, the support area can be widened, which is extremely advantageous in terms of strength.

[Brief explanation of the drawing]

FIG. 1 is a perspective view schematically showing a conventional independent inboard tank, FIGS. 2 to 4 are cross-sectional views showing an example of the support structure of the tank in FIG. 1, and FIG. FIG. 6 is an explanatory diagram showing the concept of the present invention in comparison with FIG. 4, and FIG. 6 is a cross-sectional view of the hull showing an inboard independent tank support structure as an embodiment of the present invention. Ia...longitudinal septum, lb...large bone,
lc...small bones, 2...slanted bottom plate, 3...grooves, 4,5...
・Support material. Sub-Agent Patent Attorney Yoshihiko Iinuma Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] A ship is provided with port and starboard tanks formed by dividing the inside of an independent tank into two by a vertical bulkhead. A valley-shaped groove formed by the left and right inclined bottom plates is provided at the bottom of each of these port and starboard tanks, and these grooves are arranged from the center of each port and starboard tank toward the hull centerline, so that the left and right An inboard independent tank support structure, characterized in that the inclined bottom plate closer to the side of the inclined bottom plate is supported by the bottom of the ship via a support member.