JPS5839112B2 - Powder and granule cargo carrier with unloading preparation equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a granular cargo carrier with unloading preparation equipment.

In this specification, granular materials include ore, coal, lime,
Refers to limestone, earth and sand, chips, etc.

Conventionally, in ships carrying powder and granular cargo, a nozzle that injects fluid obliquely upward to the bottom of the hold, and a nozzle that injects fluid in a direction parallel to the bottom of the hold, are installed at the upper and lower openings of the discharge port at the bottom of the hold. It is known that the ship is equipped with holds that are located close to each other (see Japanese Utility Model Publication No. 12315/1983).

However, the above-mentioned cargo hold has only one cargo discharge port, and the nozzle arrangement is designed with this single cargo discharge port in mind, resulting in a lack of promptness in unloading and the need to unload cargo in each hold separately. There was an unbelievable sense of pain.

An object of the present invention is to provide a powder cargo carrier with unloading preparation equipment that solves the above problems.

In order to achieve the above object, the carrier ship according to the present invention has a plurality of parallel bottom passages provided below each hold and extending in the bow-stern direction, and a plurality of parallel bottom passages provided below each hold and extending in the bow-stern direction. A cargo discharge section with a tapered cross section that leads to the open upper end, a slit-like opening in each cargo discharge section, a cargo discharge section located above the slit-like opening of the cargo discharge section, and a cargo discharge section extending toward the stern located at the center of the cargo hold and on both sides of the upper part of the cargo hold. and a fluid supply pipe having a large number of injection nozzles provided at predetermined intervals in the length direction, and a sub-tube provided at the end of the bottom channel and for once storing the slurry-formed cargo in at least two bottom channels. Consists of a lift tank, a sub-lift transport pipe connected to each sub-lift tank and equipped with a sub-lift pump, and one main lift tank to which fully open lift transport pipes are centrally connected. It is something.

Since the present invention has the above-described configuration, by injecting fluid onto powdery cargo from the injection nozzles of the fluid supply pipes arranged at specific positions in three stages, the cargo collapses and has a tapered cross section. The slurry of the cargo is sent to the auxiliary unloading tank.

The slurry cargo that has been efficiently accommodated from at least two bottom channels to each auxiliary unloading tank is finally sent through the auxiliary unloading transport pipe by the auxiliary unloading pump, and is collectively delivered to the main unloading tank. can be accommodated.

According to the present invention, as described above, the powder and granular cargo inside each hold can be slurried and quickly transported as a fluid to the main cargo tank via the auxiliary cargo tank,
Moreover, since the slurry powder and granules are collectively stored in a main unloading tank provided within the hull, it is convenient to unload onto land.

This invention will be explained below with reference to the drawings.

The powder and granular cargo carrier with unloading preparation equipment according to the present invention has a plurality of parallel bottom passages 3 provided below each hold 2 and extending in the bow-stern direction, and a plurality of parallel bottom passages 3 provided below each hold 2, and
Cargo discharge part 4 with a tapered cross section that communicates with the open upper end of each bottom channel 3, the upper position of the slit-shaped opening of each cargo discharge part 4, the central position of the hold 2, and the upper both sides of the hold 2 Fluid supply pipes 5a, 5b, 5c each having a large number of injection nozzles 9 extending in the stern direction and provided at predetermined intervals in the length direction are provided at the end of the bottom channel 3. and an auxiliary unloading pump 15 which is connected to each auxiliary unloading tank 6 and which temporarily accommodates the slurry-formed cargo in at least two bottom channels 3;
It consists of an auxiliary unloading transport pipe 16 equipped with the following, and one main unloading tank 7 to which the fully open unloading transport pipe 16 is centrally connected.

In the illustrated embodiment, the main unloading tank 7 and the fresh water tank 8 that supplies fresh water used for fluid transport are arranged approximately at the center of the hull 1 in the bow and stern direction.

Further, the bottom channels 3 are arranged in four rows on the left and right along the bow and stern direction in each hold 2, and two sub-lift tanks 6 are located at the stern end thereof.

The groove bottom of the channel 3 is inclined downward toward the stern so as to promote fluid flow.

The supply pipes 5a, 5b, and 5c are connected to a fluid tank 8 via a fluid pump 11, and are respectively connected to a main fluid supply pipe 10 disposed over almost the entire length of the hull 1 in the bow and stern direction.

Also, via the auxiliary fluid pump 12, the auxiliary fluid supply pipe 13.
14 are arranged, a sub-unloading tank 6 and a main unloading tank 7
It is also adapted to supply fluid.

Note that it is preferable that fluid is constantly supplied to the bottom channel 3 from a fluid supply pipe provided separately.

During unloading work, the main unloading pump 17 is operated from the main unloading tank 7.
A main transport pipe 18 is provided to a required location on land via the main transport pipe 18, and a fluid supply pipe 19 is provided from land to the fluid tank 8.

It is preferable that the transport pipe 18 and the supply pipe 19 be placed on the seabed in advance and connected to piping within the ship's hull 1 at the time of unloading.

In this example, fresh water is used as the fluid, but
It is possible to use not only fresh water but also seawater and other fluids.

In addition, 20 in the figure indicates the hatch of the hold 2.

It is preferable that the powdery cargo C be unloaded by the fluid jetted from the jet nozzle 9 in order from one end of the hold 2.

As a result of the fluid ejecting forcefully from the nozzle 9, the cargo C collapses and falls from the discharge port 4 into the bottom channel 3,
The fluid ejected from the nozzle 9 is transferred to the auxiliary unloading tank 6 and collected in the auxiliary unloading tank 6.

If fluid is allowed to flow through the channel 3 at all times, the cargo can be transferred more smoothly.

A fluid is supplied into the sub-unloading tank 6 from a supply pipe 13 as required, and the slurry-formed cargo C is fluidly transported by a pump 15 through a transport pipe 16 to the main unloading tank 7 .

The slurry cargo C temporarily stored in the main unloading tank 7 is further fluidly transported by a pump 17 through a transport pipe 18 and brought ashore.

Fluid is appropriately replenished into the fluid tank 8 from land.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a partial plan view showing the arrangement inside the hull, and FIG.
FIG. 3 is a cross-sectional view taken along the line ■-■ in FIG. 1. 2... hold, 3... bottom channel, 4...
...Cargo discharge section, 5a, sb, 5c...
...Fluid supply pipe, 6... Sub-unloading tank, 7.
...Main loading tank, 9...Fluid injection nozzle, 15...Sub-lifting pump, 16...
Secondary unloading pipe.

Claims (1)

[Claims] 1 A plurality of parallel bottom passages 3 provided below each hold 2 and extending in the bow-stern direction, and a cross-sectional taper provided at the lower part of the hold 2 and communicating with the open upper end of each bottom passage 3. The slit-shaped cargo discharge section 4 and the slit-shaped openings of each cargo discharge section 4, the central position of the cargo hold 2, and the upper both sides of the cargo hold 2 extend toward the stern and extend in the length direction. Fluid supply pipes 5a, 5b, 5c having a large number of injection nozzles 9 provided at predetermined intervals, and a bottom channel 3
A secondary unloading tank 6 which is provided at the end of the vessel and temporarily accommodates the slurryized cargo in at least two bottom channels 3; Cargo transport pipe 16 and fully open cargo transport pipe 16
A powder and granular cargo carrier equipped with unloading preparation equipment, consisting of one main unloading tank 7 to which are centrally connected.