JPS5854312Y2 - coal ship - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a coal ship that makes effective use of void space.

In recent years, with the rise in oil prices, there has been a growing momentum to reconsider coal as a fuel, and coal-fired ships are once again being considered for ships.

By the way, one of the problems with coal-fired ships is how to secure a bunker.

When using heavy oil as fuel, since it is a liquid, it was possible to use a double bottom on the bottom of a ship that is not used as a cargo hold, but since coal is solid, a double bottom, etc. could be used as a coal storage. It is difficult.

Therefore, in the past, the cargo hold in the center of the ship was used as a coal storage, taking into consideration the trim balance of the ship.

Therefore, the volume of the cargo hold decreased accordingly, and in order to secure the same cargo hold capacity, the ship had to be increased in size accordingly.

One possible way to solve this problem is to use the wing space located above the ship's side as a coal storage area, which is necessary for bulk carriers but is only a void space when loading cargo. In this case, there were technical problems in conveying the coal through the storage to the engine room and dealing with the coal load.

The present invention was developed in order to solve these problems.The wing space located above the side of the ship is used as a coal storage, and a movable belt is installed inside the coal storage. The above objective was achieved by proposing a coal carrier equipped with a coal transport device having a compressed air duct facing the back side of the vessel, which makes it possible to effectively utilize void space and avoid a reduction in cargo hold volume. At the same time, it does not require a large-sized conveying device to overcome the coal load, and it is possible to avoid a reduction in coal storage capacity that would otherwise occur due to the use of a large-sized conveying device.

An embodiment of the present invention will be described below based on the drawings.

In FIGS. 1 to 6, 1 is a ship, and a plurality of ships 2A and 2B (six in the embodiment) are arranged in the bow and aft direction.

2C, 2D, 2E, 2F and has a central conveyor section 3 in the middle.

The ships 2A to 2F have left and right bottoms 6A, 6B formed by a center hopper wall 4 and side hopper walls 5A, 5B in a cross section, and a wavy bottom hopper 7 in a longitudinal section.

Screw conveyors 8A, 8B extending in the width direction of the ship are disposed at each wave bottom of the ship bottoms 6A, 6B, and the outer ends of these screw conveyors 8A, 8B are connected to the side hopper walls 5A, 5.
A case 10A is supported by the center hopper wall 4 and has an inner end located in a space 9 within the center hopper wall 4.

Supported by 10B.

In addition, each screw conveyor 8A, 8B has a case IOA
, and are driven separately by drive devices 11A and 11B attached to the IOB.

In the cases IOA and IOB, chain conveyors 12A and 12B in the fore and aft direction are arranged, and the ends of these chain conveyors 12A and 12B reach the central conveyor section 3.

Above are 8A, 8B to 12A. 12B constitutes an unloading device 13.

A packet conveyor 14 is provided within the central conveyor section 3, to which the chain conveyors 12A, 12B are connected at its reception opening.

The packet conveyors 14 are provided in pairs on the bow side and the stern side, and penetrate through the upper deck 15, respectively, and have their discharge ports 16 located above the upper deck 15.

A hatch 17 that can be opened and closed is provided on the top of each of the vessels 2A to 2F.
A, 17B.

17c, 17D, 17E, and 17F are provided, but in the case of pneumatic loading, hatches are not provided and instead a bag filter or other gas-solid separation device is provided.

18 is a hopper-shaped supply tank formed in the engine room 19,
The upper part communicates via a number of coal supply ports 35 to a coal storage bed 20 formed by a light leg space located above the side of the ship.

One or more coal drop ports 21 are formed at the lower end of the supply tank 18, and a belt conveyor 22 is provided to receive the coal from the coal drop ports 21.

Note that the upper deck 15 corresponding to the coal storage floor 20 is provided with a coal input port 23 that can be opened and closed.

In the embodiment, only the wing space located above the sides of the two ships adjacent to the engine room 19 is shown as the coal storage bed 20, but when this space is small, the wing space located above the sides of the adjacent ship 2B is shown. It is also possible to expand the coal storage space by using the wing space 24 located above the intermediate portion between the vessels 2A and 2B.

A coal conveying device 25 is provided in the coal storage bed 20 to move the coal in the coal storage bed 20 to the position of the group of coal supply ports 35 above the supply tank 18.

That is, the coal conveyance device 25 includes an endless movable belt 26 disposed in the bow-stern direction at the bottom of the coal storage bed 20;
A pair of wheels 27 for tensioning this movable belt 26
A, 27B consists of a wheel body 28 for increasing the magical friction force, a belt mount 30 facing the back of the movable belt 26, and a compressed air duct 29 attached to the back of the belt mount 30. .

The belt-top mount 30 receives the movable belt 26 on its upper surface, and a large number of blowholes 30A are formed on the upper surface side.

Note that one wheel body 27A is operatively connected to a drive device (such as a motor, not shown).

31 is a slant plate for preventing a large load from acting on the movable belt 26; 32 is an upper deck 15;
An openable and closable coal input hatch provided on the top plate of the higher supply tank 18 is shown.

33 has its starting end connected to the discharge port 1 of the packet conveyor 14.
6, and a revolving chain conveyor 34 that can be swung out of the ship is disposed at the end of the chain conveyor.

Grain, pulverized coal, and powdered fluids are transferred to ships 2A to 2F using conveyors on the loading dock side.
It will be held on the 7th floor.

Then, coal is loaded into the supply tank 18 through the opened coal input port 32, and coal is loaded into the coal storage bed 20 through the coal input port 23.

After this loading is completed, the vessel 1 is transported by navigation, but during this transportation, the engine room 1
At 9, the coal taken out from the supply tank 18 is used.

That is, the coal in the supply tank 18 falls from the coal drop port 21 onto the belt conveyor 22 and is conveyed.

When the coal in this supply tank 18 decreases, it is replenished with coal that falls from the coal storage bed 20 side through the coal supply port 35.

When the coal at the coal supply port 35 group runs out, the wing space located above the ship's side of the coal storage bed 20 is replenished with coal.

This can be done by transporting the coal in the coal storage bed 20 to the position of the coal drop port 35 group by the coal transport device 25.

That is, by supplying compressed air (inert gas) to the compressed air duct 29, this compressed air flows through the blowhole 30A.
The pulverized coal is injected from the movable belt 26 and is pushed up through the moving belt 26.

By moving the movable belt 26 in this state,
The powdered coal in the coal storage bed 20 is transferred.

At this time, the compressed air is injected from the blowhole 30A, so that the load of coal on the mobile belt 26 is reduced, the power required for starting and operating the mobile belt 26 is reduced, and the coal is supplied from the coal storage bed. Coal can be smoothly transported to the tank.

The unloading of powder and granular materials should be carried out as follows.

That is, the screw conveyor 8 of any ship 2A to 2F
A, 8B, chain conveyors 12A, 12B packet conveyor 14, and both chain conveyors 33, 34 are driven.

Then, the powder and granular materials in any of the holds 2A to 2F are transferred to the screw conveyor 8A.

8B into cases IOA and IOB, and conveyed to the central conveyor section 3 side by chain conveyors 12A and 12B.

Next, the powder is transported to the upper deck 1 by a packet conveyor 14.
5 and passed through the outlet 16 to the chain conveyor 33 and then conveyed by the revolving conveyor 34.

In the above embodiment, an endless type movable belt 26 is shown, but it may also be of a cyclic winding type as shown in FIG.

In this case, both wheels 27A. 27B is belt storage case 3
6A, 36B, and both wheels 27A, 27
B are interlocked and connected to winding motors 37A and 37B, respectively.

As described above, according to the present invention, the coal storage for securing coal for fuel is formed in the wing space located above the side of the ship, so compared to the case where the cargo hold is used as a coal storage, the cargo hold is There is no reduction in the volume of the ship, and the void space above the bulkhead between the engine room and the hold can be used effectively, and the engine room space does not need to be made larger than necessary for coal storage, making it possible to create an economical carrier. In addition, by providing a coal conveying device consisting of a mobile belt and a compressed air duct in the coal storage, there is no need for a large conveying device to overcome the coal load, and therefore a large conveying device can be used. There are no problems such as a reduction in coal storage capacity caused by coal storage, and the transport device can be configured compactly, power required during startup and operation can be reduced, and thermal coal can be smoothly transported from the coal storage to the supply tank. can.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal side view of the ship, FIG. 2 is a longitudinal side view of the main part ([1-II cross section in FIGS. Figure 3 is a sectional view taken along line ■-■ in Figure 2, Figure 4 is a sectional view taken along line fV-■ in Figure 2, Figure 5 is a partially cutaway plan view of the main part, Figure 6 is a side view of the coal conveyance device,
FIG. 7 is a sectional view of the same, and FIG. 8 is a side view showing another embodiment of the coal conveying device. 1... Ship, 2A to 2F... Ship hold, 3... Central conveyor section, 8A, 8B... Screw conveyor,
12A. 12B... Chain conveyor, 13... Unloading device, 1
5...Upper deck, 16...Discharge port, 17A-17F.
...Hatch, 18... Supply tank, 19... Engine room, 2
o...Coal storage, 23.32...Coal input port, 25.
...Coal conveyance device, 26...Movable belt, 29...
・Compressed air duct, 30...belt mount, 30A
... Fumarole, 35... Coal supply port.

Claims (1)

[Scope of utility model registration request] The wing space located above the side of the ship is used as a coal storage, and this coal storage is connected to a coal supply tank provided in the engine room. A coal ship characterized by being equipped with a coal transport device consisting of opposing compressed air ducts.