JPS5853631B2 - Self-propelled or non-self-propelled barges that store powder and granular materials by modifying ships - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides powder and granular material used for civil engineering work related to oil shipping in Middle East oil producing countries etc. This relates to a self-propelled barge or a non-self-propelled purge that has been modified to have storage therein.

Recently, various civil engineering works and bank protection works have been frequently carried out in order to ship oil mainly in oil-producing countries in the Middle East.

With the implementation of such large-scale equipment, the demand for powder and granular materials such as cement and cement clinker is rapidly increasing.

However, in addition to poor local quay conditions, there are large peaks and troughs in the demand for powder and granular materials, and it has been pointed out that there is extreme inefficiency due to the long demurrage of powder and granular transport vessels.

For this reason, there has been a desire between those involved in transport ships and customers to install large-scale storage facilities for powder and granular materials that can serve as dampers at low cost and at an early stage.

In order to meet these demands, the present invention has been developed as a powder storage facility that has a larger capacity than a general transport ship, can be installed early and at low cost, and is easy to carry in and carry out powder and granular materials. As a result of our research, we aimed to satisfy various conditions, such as having good performance, and being able to simplify the relative relationship between the transport ship, powder storage equipment, and land as much as possible. They focused on the fact that it could be used for a limited time.

That is, the present invention uses an oil tanker, an ore and oil transport ship, or an ore transport ship as a purge tank, and by making the central tank of these ships a powder tank, it is possible to create a powder storage with a larger capacity than that of a transport ship. Can be done.

In addition, by providing a hopper using a part of the side tank of the oil tanker or by providing equipment for transporting powder and granular material on the upper deck, workability for carrying in and transporting powder and granular material is extremely improved.

Furthermore, by using the side tanks of these ships as ballast tanks, together with the normally installed peak tanks, it is possible to easily correct the ship's vertical and heel, and to keep the barge's stuttering constant.

Moreover, since oil tankers, ore-cum-oil transport ships, and ore carriers can be used almost as they are, except for loading and unloading equipment, the equipment can be provided quickly and at low cost.

The present invention thus responds to local needs.

Next, one embodiment of the present invention will be explained with reference to the drawings.

First, to explain the structure of a conventional oil tanker, the hull 1 of this oil tanker is a two-row vertical bulkhead type, and is separated by a longitudinal bulkhead 2.2 into a central tank 3 and side tanks 4.
Further, the central tank 3 and the side tanks 44 are subdivided by an appropriate number of horizontal bulkheads 5.

A pump chamber 6 is formed on the stern side of the central tank 3, and a cargo oil pump P is disposed in the pump chamber 6.

Note that this cargo oil pump P is a pump used when loading and unloading crude oil.

On the other hand, a peak tank 78 is provided at the bow and stern of the hull for adjusting the trim of the body.

This peak tank 7.8 adjusts the trim of the hull by taking in and taking out seawater using a ballast pump installed in the pump room 6, engine room 9, etc.

The hull 1 configured as described above, especially an oil tanker, is currently in a saturated state, and is modified to be a barge (hereinafter 1 will be described as a barge) for storing powder and granular materials (cement, cement tanker, etc.).

).

Next, an example of the modification will be described, in which the central tank 3 is used as a powder tank (hereinafter, 3 will be explained as a powder tank).

). Of the devices 1011 for loading and unloading powder and granular material into the powder and granular material tank 3, the carrying device 10 is a hopper which is constructed by modifying a part of the side tank 4 and partitioning a chamber into which the top surface is opened onto the deck. Install 12.

An air slide conveyor 14 is disposed below the hopper 12 and communicates with a vertical packet elevator 3 installed in the powder tank 3.

An upper air slide conveyor 16 is provided above the deck 15 of the vertical packet elevator 3.

The upper air slide conveyor 16 is arranged so that it branches above the powder and granule tanks 3 and can carry the powder and granules into each powder and granule tank 3.

A powder/granular material carrying-in device 10 configured as described above is newly installed inside the barge 1.

On the other hand, the carry-out device 11 arranges a bottom air slide conveyor 17.17 at the bottom of the powder tank 3 so that the powder gathers at the center in the width direction of the powder tank 3.

The trough chain conveyors 1 and 8 are installed at the confluence point of the bottom air slide conveyor 1717, that is, at the vertical center of the powder tank 3.
7. The powder and granular material sent in step 17 is carried to the vicinity of the vertical packet elevator 13.

The trough chain conveyor 18 and the vertical packet elevator 13 are connected by another trough chain conveyor 19.

Furthermore, at the upper end of the vertical packet elevator 13,
An air slide conveyor 20 is provided to transport the powder to land.

The unloading device 11 configured as described above is newly installed inside the hull 1, that is, a barge (hereinafter referred to as a barge).

The side tank 4 of the barge 1 is used as a ballast water tank, and will be described below as a ballast water tank.

), and a ballast pump (hereinafter P will be described as a ballast pump) after the cargo oil pump P is re-piped to the ballast water tank 4.

) to be used as Now, as shown in Figure 4, barge 1
A transport ship 21 is moored at , and the powder and granular material is put into the hopper 12 from the transport ship 21 in packets 22.

The powder and granules that have entered this hopper 12 are sent to a vertical packet elevator 13 by an air slide conveyor 14.
This vertical packet elevator 13 transports the powder to above the deck.

Here, the powder is stored in each powder tank 3 via the upper air slide conveyor 16.

Since this powder tank 3 has a much larger storage capacity for powder than the transport ship 21, the transport ship 21 can move immediately after the transport of the powder is completed, which is extremely efficient.

In addition, when the powder and granular material is transferred from the transport ship 21 to the barge 1,
As the water level of the barge 1 changes, it tilts vertically and horizontally.

Therefore, by operating the ballast pump P to adjust the amount of water in the ballast water tank 4, and by operating the ballast pump to adjust the amount of water in the peak tank 7.8, changes in the stuttering water of the barge 1 and deal with.

Therefore, the vertical relative positions of the transport ship 21, barge 1, and land can always be kept constant, resulting in good workability.

In addition to this, the width of the powder tank 3 is about 1/2 to 1/3 narrower than the overall width of the ship, so the lateral movement of powder that adversely affects the stability of the ship It has the effect of limiting the

As mentioned above, when carrying out the powder stored in the powder tank 3, the bottom air slide conveyor 17. Granules in vertical packet elevator 13
send to

Then, the powder and granular material is transported to above the deck 15 by this vertical packet elevator 13, and then transported to land by an air slide conveyor 20 for transporting the powder and granular material onto land.

When the stuttering and vertical/horizontal slope of the purge 1 change due to the transport of the powder onto land, the water volume in the ballast water tank 4 is adjusted by operating the ballast pump 9, and the water volume in the peak tank 78 is adjusted by the ballast pump (not shown). Since the vertical relative position between the purge 1 and the land is kept constant, the workability is good.

Further, since the bottom air slide conveyor 17.17 has a small bottom area compared to the tank capacity, it has the advantage that its length can be shortened.

Furthermore, since the vertical packet elevator 13 can be used for both loading and unloading, the loading and unloading equipment is simplified accordingly and can be provided quickly and at low cost.

In this embodiment, the powder and granular material is directly transported to land, but the powder and granular material may be packed in bags on the deck of the purge 1 and then transported to land.

As described above, according to the present invention, an oil tanker, an ore-cum-oil carrier, or an ore carrier is used as a purge tank, and the central tank is made into a powder tank, so it can be used as a large-capacity powder tank, and The center tank has a large length-to-width ratio, which reduces the floating area of the powder and improves the ship's stability.

In addition, the side tanks of oil tankers and ore-cum-oil carriers are used as ballast tanks, and the cargo oil pumps are used as ballast pumps, so it is possible to easily correct the longitudinal and lateral diagonal of the ship's hull and to purge. The stability of the hull can be further improved by keeping the water level constant.

Therefore, workability is improved when transporting powder and granular materials from a general transport ship to the purge, or when transporting the powder and granular materials from the purge to land.

Also, purge 1 includes side tank 4 and peak tank 7.
8 is provided, by appropriately injecting water into these and actively tilting the purge, the powder and granules can be collected near the transfer device and unloaded.
Collection work becomes significantly easier.

Furthermore, since the vast area of the upper deck can be effectively utilized, the workability of loading and unloading powder and granular materials is further improved.

Furthermore, the pump room of an oil tanker and its ancillary equipment can be used as a passage for maintenance and inspection of loading and unloading equipment, and as mentioned above, each tank and pump can be used almost as is, so it can be used quickly and at low cost. It has many advantages such as being able to provide a purge for storing powder and granular materials, and its effects are significant.

In the above embodiment, the case where an oil tanker is modified into a purge for storing powder and granules has been exemplified, but the present invention is not limited to this, and can also be applied to modification of an ore-cum-oil transport ship or an ore carrier. It is available.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an explanatory longitudinal cross-sectional view thereof, FIG. 2 is an explanatory plan view, FIG. 3 is an explanatory plan view of the bottom of the ship, and FIG. FIG. 1...Hull (purge), 2...Longitudinal bulkhead, 3...Central tank (powder tank) v4...
...Side tank (ballast water tank), 5...
...Transverse bulkhead, 10... Carrying device, 11...
...Unloading device, P...Cargo oil pump (ballast pump).

Claims (1)

[Claims] 1. In a ship equipped with a central tank and side tanks separated by bulkheads, the central tank is used as a powder tank, the side tanks are used as ballast tanks, and a hopper is provided that opens onto the deck of the side tank. An air slide conveyor is provided to communicate the lower part of the hopper with a vertical packet elevator installed in the powder tank, and an upper air slide conveyor is provided above the deck of the vertical packet elevator to convey the powder and granules. A bottom air slide conveyor is arranged at the bottom of the body tank so that the powder and granules gather at one point, and a trough chain conveyor is arranged to connect this confluence point to the bottom of the vertical packet elevator. A self-propelled or non-self-propelled barge for storing powder and granular materials by modifying a ship, characterized in that an air slide conveyor for carrying out is provided at the upper end.