AU2021102858A4

AU2021102858A4 - Cabin of bulk material self-unloading ship

Info

Publication number: AU2021102858A4
Application number: AU2021102858A
Authority: AU
Inventors: Wenjun MENG; Hong Ren; Xiaoxia Sun; Weijie YANG; Fenglin Yao; Xuan YIN; Biao Zhang; Hanzhong Zhang; Xiaoxia Zhao
Original assignee: Taiyuan University of Science and Technology
Current assignee: Taiyuan University of Science and Technology
Priority date: 2020-11-06
Filing date: 2021-05-26
Publication date: 2021-07-15
Anticipated expiration: 2029-05-26
Also published as: CN112278149A

Abstract

OF THE DISCLOSURE Disclosed is a cabin of a bulk material self-unloading ship, belonging to the field of ship design and manufacture. The cabin of the bulk material self-unloading ship includes a bulk material tank 3 in a ship body, a hatch 1 at the central position of the top surface of the bulk material tank, and transition angles 2 inside the bulk material tank 3. There are four transition angles 2 in total, which are fixedly mounted at the included angles formed by two adjacent vertical side surfaces and the horizontal bottom surface inside the bulk material tank 3. The space between the outside of the bulk material tank 3 and the ship body is divided into multiple tanks through rib plates of the ship body, and the tanks are respectively located at both sides and the bottom of the cabin. Top side ballast tanks 4, 4' are located at the top; side tanks 5, 5' are located on sides; bottom side ballast tanks 6, 6', fuel oil tanks 7, 7', fresh water tanks 8, 8', and a pipe tunnel 9 are located at the bottom. The advantages are that the transition of the bulk material tank from a square into a circle is realized by using the cabin of a heptagonal structure and the transition angles >60°, which alleviates residual materials unloaded by a center-rotary loading/unloading equipment, and fully uses the volume of the ship body. Multiple fuel oil tanks, fresh water tanks, and ballast tanks are added, which improves the endurance capability and the stability of the ship. ABSTRACT DRAWING 2 3 FIG. 1

Description

CABIN OF BULK MATERIAL SELF-UNLOADING SHIP TECHNICAL FIELD

[01] The present disclosure belongs to the field of ship design and manufacture, and particularly, relates to a cabin of a bulk material self-unloading ship.

BACKGROUND ART

[02] With the increase of shipping cost of bulk materials year by year, more and more enterprises adopt large-tonnage bulk cargo ships to transport the bulk materials, so as to reduce the transportation cost of bulk materials per unit mass. However, the tonnage and loading and unloading capacity of bulk cargo ships that a port wharf can dock are limited. The large-tonnage bulk cargo ships often face embarrassing situations of incapacity to dock or long loading/unloading time. Therefore, it is required to equip a bulk material loading/unloading equipment on the premise of ensuring the functions of the bulk cargo ships, which expands the effective volume and improve the utilization rate of cabins as much as possible. The cabin has few residual bulk materials, and is convenient and quick to clear.

[03] There are two types of cabins of bulk material self-unloading ships: 60 bottom cone cabins and flat-bottomed cabins. (1) In a 60° bottom cone cabin, a bulk material can be unloaded out of the cabin relying on dead weight. There is almost no need to clear the tank. However, the gravity center of a ship is relatively high and the effective volume of the cabin is greatly reduced due to the existence of a bottom cone of the 60° bottom cone cabin. (2) A flat-bottomed cabin has a cabin structure similar to a cuboid and has large volume. The bulk material is discharged out from the bottom of the cabin, falls onto a conveyor belt arranged at the bottom of the cabin, and is lifted to the surface of a deck through a hoist. When the flat-bottomed cabin is cleared: 1) a linear reciprocating type scraper clearing equipment or clearing trolley has relatively low efficiency, and the bulk material enters the clearances of moving parts, such as chains and gears, which aggravates wear; 2) a liftable center-rotary loading and unloading equipment has relatively high efficiency, but there are residual bulk materials remaining at the corners of a cabin bottom, so the cabin also needs to be cleared with manual assistance, thereby increasing the clearing cost. These problems seriously restricts the development of bulk material self-unloading ships.

SUMMARY

[04] The objective of the present disclosure is to provide a cabin of a bulk material self-unloading ship suitable for center-rotary loading/unloading or clearing device, which has large volume and few residual bulk materials.

[05] The present disclosure is implemented in such a manner. As shown in FIG. 1, the cabin of the bulk material self-unloading ship includes a hatch 1, transition angles 2, a bulk material tank 3, top side ballast tanks 4, 4', side tanks 5, 5', bottom side ballast tanks 6, 6', fuel oil tanks 7, 7', fresh water tanks 8, 8', and a pipe tunnel 9. The bulk material tank 3 is in a ship body, the hatch 1 at the central position of the top surface of the bulk material tank, and the transition angles 2 are inside the bulk material tank 3.

There are four transition angles 2 in total, which are fixedly mounted at the included angles formed by two adjacent vertical side surfaces and the horizontal bottom surface inside the bulk material tank 3. The space between the outside of the bulk material tank 3 and the ship body is divided into multiple tanks through rib plates of the ship body, and the tanks are respectively located at both sides and the bottom of the cabin. The top side ballast tanks 4, 4' are located at the top; the side tanks 5, 5' are located on sides; the bottom side ballast tanks 6, 6', the fuel oil tanks 7, 7', the fresh water tanks 8, 8', and the pipe tunnel 9 are located at the bottom.

[06] Compared with the prior art, the present disclosure has the following beneficial effects:

[07] (1) The transition of the bulk material tank from a square cross section into a circular bottom surface is realized by using the cabin of a heptagonal structure and setting the transition angles >60° between the side surfaces and the bottom surface; the four transition angles account for less than 3% of the cabin volume, which can alleviate the residue of the bulk material and improve the discharging efficiency of the bulk material by matching the center rotary unloading or clearing equipment.

[08] (2) The space of the ship body is fully utilized. Multiple top side tanks, side tanks, and bottom side tanks are arranged without changing the shape and dimension of the whole ship, which can increase the reserves of fresh water and fuel oil, thereby enhancing the endurance capability of the ship; meanwhile, the number of ballast tanks is increased, which facilitates the adjustment of the height of the gravity center of the ship, thereby improving the economy, stability, and safety of navigation.

BRIEFT DESCRIPTION OF THE DRAWINGS

[09] For ease of illustration, the present disclosure is described in detail by following specific implementations and accompany drawings.

[10] FIG. 1 is a schematic structural diagram of a whole body of the present disclosure.

[11] FIG. 2 is a schematic structural diagram of a transition angle.

[12] FIG. 3 is a vertical view of FIG. 1.

[13] FIG. 4 is an A-A sectional view of FIG. 3.

[14] FIG. 5 is a B-B sectional view of FIG. 4.

[15] FIG. 6 is a main view of FIG. 2.

[16] FIG. 7 is a left view of FIG. 2.

[17] FIG. 8 is a vertical view of FIG. 2.

[18] Reference signs in drawings: 1-hatch, 2-transition angle, 3-bulk material tank, 4,4'-top side ballast tank, 5,5'-side tank, 6,6'-bottom side ballast tank, 7,7'-fuel oil tank, 8,8'-fresh water tank, and 9-pipe tunnel.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[19] The present disclosure will be further described below with reference to accompanying drawings and embodiments. The implementations of the present disclosure include but are not limited to the following embodiments.

[20] Working principle of the present specific implementation:

The schematic structural diagram of the whole body of a cabin is as shown in FIG. 1. The bottom of a bulk material tank 3 is the inner ship bottom of a ship body. The cross section of the upper part of the bulk material tank 3 is changed into a square (as shown in FIG. 5) on the premise of not changing the shape and the dimension of the ship body, which increases the storage volume of the cabin. In order to make the center-rotary loading/unloading or clearing device be capable of emptying the residual bulk material at the bottom of the bulk material tank 3, i.e, the present type of equipment can reach any position of the bottom of the bulk material tank 3, the bulk material tank 3 is gradually changed from the square at the upper part into a circle at the bottom by using the transition angles 2 >60° (as shown in FIGs. 1 to 5), where the circle of the bottom is the maximum inscribed circle of the square of the upper part. A bulk material can be fed into/discharged from the bulk material tank 3 through the hatch 1 at the top. The space between the bulk material tank 3 and the ship body is divided into multiple tanks through rib plates. Based on the functions, the tanks can be divided into: top side ballast tanks 4, 4', side tanks 5, 5', bottom side ballast tanks 6, 6', fuel oil tanks 7, 7', fresh water tanks 8, 8', and a pipe tunnel 9. The top side ballast tanks 4, 4' and the bottom side ballast tanks 6, 6' are generally used for adjusting the height of the gravity center of a ship, and the other tanks can be used for storing fuel oil and fresh water, or can be empty tanks. The functions and positions of the tanks can be adjusted during design.

[21] The above shows and describes basic principles and main features of the present disclosure and advantages of the present disclosure. Those skilled in the art should understand that the present disclosure is not limited by the previously described embodiments. The descriptions of the previously described embodiments and the specification only illustrate the principle of the present disclosure. The present disclosure may also have various changes and improvements. Any modifications, equivalent replacements, improvements, and the like made without departing from the spirit and scope of the present disclosure fall within the scope of protection of the present disclosure. The scope of protection of the present disclosure is limited by the appended claims and its equivalents.

Claims

WHAT IS CLAIMED IS:

1. A cabin of a bulk material self-unloading ship, comprising a hatch (1), transition angles (2), a bulk material tank (3), top side ballast tanks (4, 4'), side tanks (5, 5'), bottom side ballast tanks (6, 6'), fuel oil tanks (7, 7'), fresh water tanks (8, 8'), and a pipe tunnel (9), wherein the bulk material tank (3) is in a ship body; the hatch (1) is at the central position of the top surface of the bulk material tank; the transition angles (2) are inside the bulk material tank (3); there are four transition angles (2) in total, which are fixedly mounted at the included angles formed by two adjacent vertical side surfaces and the horizontal bottom surface inside the bulk material tank (3); the space between the outside of the bulk material tank (3) and the ship body is divided into multiple tanks through rib plates of the ship body, and the tanks are respectively located at both sides and the bottom of the cabin; the top side ballast tanks (4, 4') are located at the top; the side tanks (5, 5') are located on sides; the bottom side ballast tanks (6, 6'), the fuel oil tanks (7, 7'), the fresh water tanks (8, 8'), and the pipe tunnel (9) are located at the bottom.

2. The cabin of the bulk material self-unloading ship according to claim 1, wherein the bottom of the bulk material tank (3) is the inner ship bottom of the ship body; the cross section of the upper part of the bulk material tank (3) is changed into a square (as shown in FIG. 5) on the premise of not changing the shape and dimension of the ship body, which increases the storage volume of the cabin; in order to make the center-rotary loading/unloading or clearing device be capable of emptying the residual bulk material at the bottom of the bulk material tank (3), i.e, the present type of equipment can reach any position of the bottom of the bulk material tank (3), the bulk material tank (3) is gradually changed from the square of the upper part into a circle of the bottom by using the transition angles 2 >60° (as shown in FIGs. 1 to 5), wherein the circle at the bottom is the maximum inscribed circle of the square at the upper part; a bulk material can be fed into/discharged from the bulk material tank (3) through the hatch (1) at the top.

3. The cabin of the bulk material self-unloading ship according to claim 1, wherein the space between the bulk material tank (3) and the ship body is divided into multiple tanks through rib plates; based on the functions, the tanks can be divided into: the top side ballast tanks (4, 4'), the side tanks (5, 5'), the bottom side ballast tanks (6, 6'), the fuel oil tanks (7, 7'), the fresh water tanks (8, 8'), and the pipe tunnel (9); the top side ballast tanks (4, 4') and the bottom side ballast tanks (6, 6') are generally used for adjusting the height of the gravity center of a ship, and the other tanks can be used for storing fuel oil and fresh water, or can be empty tanks; the functions and positions of the tanks can be adjusted during design.