JPS6033108Y2 - coal-fired ship - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a coal-fired ship.

In conventional coal-fired ships, when the fuel coal bed is placed in the stern engine room or adjacent to the engine room, the trim changes during the voyage due to coal consumption are large, and the cargo hold is not sufficiently wide in the longitudinal direction of the ship. It becomes difficult to arrange them in a well-balanced manner,
It is desirable to place the coal bed near the center of the ship from the viewpoint of the ship's trim and hull longitudinal strength, as it places a heavy burden on the longitudinal strength of the ship. Since the front and rear of the ship are sandwiched between the cargo holds, there are the following drawbacks:

In other words, coal is normally loaded by a ship connected to a quay during cargo handling (loading or unloading cargo), but in the past, coal was loaded onto the quay through a hatch installed above the coal bed. When loading coal with a loader, the coal loading loader interferes with the operation of the cargo handling loader or unloader, making it difficult to carry out coal loading and cargo handling operations at the same time.

This invention was proposed in view of these circumstances, and by improving the trim and reducing the burden on the longitudinal strength of the hull, it is possible to carry out coal loading and cargo handling operations at the same time. The purpose is to provide a coal-fired ship with a coal bed in the center of the hull, and a coal-receiving hopper installed on the bow or stern side of the cargo hold compartment, The present invention is characterized by comprising a slurry transport means for transporting the coal in the receiving hopper to the coal bed.

One embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a side view thereof, and Figs. 2 and 3 are respectively
-■ and ■-■ cross-sectional views, FIG. 4 is a system diagram of FIG. 1.

In the above diagram, 1 is the engine room, 2 is the coal bed, 3 is the cargo hold,
4 is a vertical bulkhead, 5 is a cargo hold hatch, 10 is a coal receiving hopper, 11 is a fresh water tank, 12 is a high pressure water pump, 13,
14.15 are high pressure water pumps, 16 are jet nozzles, 17 are eductors, 18 are slurry transport pipes, 1
9. 20 is the screen, 21 is the soil, 22 is the pipe,
23 is an eductor.

In such a coal-fired ship, a coal-fired boiler and a turbine are arranged in an engine room 1, and coal used as fuel is loaded onto a coal bed 2.

Cargo hold 3 has the shape of a standard bulk carrier type, and is widely arranged in the bow-stern direction from 3A at the bow to 3I at the stern, with cargo hold 3E near the center of the ship.
Only the left and right compartments are separated by a vertical bulkhead 4 for coal dust, and the coal receiving hopper 10 is located at the stern part away from the cargo hold compartment.

Coal for fuel is loaded into the coal receiving hodpar 10 by a loader on the quay near the stern.

A fresh water tank 11 and a high-pressure water pump 12 are arranged in the engine room 1, and a jet nozzle 16 and an eductor 17 are arranged.
are supplied with high pressure water through high pressure water pipes 13,14.

The coal put into the coal receiving hopper 10 is cut into pieces by the jet water from the jet nozzle 16, flows down, is suctioned and pressure-fed by the eductor 17, and is slurry-transported to the coal dust 2 through the slurry oil delivery pipe 18 on the deck. .

Coal dust 2 has screens 19 at the top and bottom, respectively.
．． 20 is provided, the water in the slurry flows down through the screen 19.20 into the well 21 and into the pipe 22.20.
The water is returned to the fresh water tank 11 through the eductor 23 and used for circulation as water for transporting slurry.

Loading and unloading of cargo into the cargo hold 3 is carried out through the cargo hold batch 5 by a loader or unloader on the quay, but loading of coal for fuel is carried out at a coal receiving area located away from the cargo hold section. Since this is carried out through the hopper 10, cargo loading and unloading and coal loading can be carried out simultaneously and independently.

According to the present invention, by adopting the coal loading device, it is possible to place the coal dust near the center of the ship where the trim and longitudinal strength membrane of the ship are also suitable, and the coal dust 2 is transferred to the engine room 1. Coal is also transported by hydraulic power, dehydrated in the engine room, and then supplied to the boiler.

Note that the coal receiving hopper 10 may be provided at the bow of the ship.

In short, according to the present invention, in a coal-fired ship having coal dust in the center of the hull, there is a coal receiving hopper provided on the bow side or bow side of the cargo hold section, and the coal in the coal receiving hopper is transported to the coal dust. The present invention is industrially extremely useful because it provides a coal-fired ship with improved trim, increased longitudinal strength, and the ability to load coal and unload cargo at the same time.

[Brief explanation of drawings]

Fig. 1 is a side view showing one embodiment of the present invention, Figs. 2 and 3 are cross-sectional views taken along the lines It is a system diagram. 1...Engine room, 2...Coal dust, 3...
...Cargo hold, 4...Vertical bulkhead, 5...
・Cargo hold batch, 10... Coal receiving hopper, 11... Fresh water tank, 12... High pressure water pump, 13, 14.15... High pressure water Pipe, 16...Jet nozzle, 17...
Eductor, 18... Slurry transport pipe, 19
, 20... Screen, 21... Well, 22... Pipe, 23... Eductor.

Claims (1)

[Scope of utility model registration request] In a coal-fired ship having a coal bed in the center of the hull, a coal receiving hopper provided on the bow or stern side of the cargo hold section, and a slurry transport means for transporting the coal in the coal receiving hopper to the coal bed. A coal-fired ship characterized by: