JPS6124691A - Transportation of drinking water in making use of ballast water for tanker - Google Patents

Abstract

PURPOSE:To enable an existing tanker to transport drinking water by accommodating many carrying containers which are full of drinking water and are connected one another with connectors in a form of a kinematic chain, into ballast water. CONSTITUTION:A chain of impermeable carrying containers 4, each of which is full of drinking water and is connected flexibly with connectors 2 in a form of a kinematic chain, is assembled. After an empty tank being cleaned, clean ballasting water is loaded. Then the chain of carrying containers 4 is lowered down into a clean ballast tank 6 by a hoisting crane 8 with a hatch 7 opened. This configuration enables an existing tanker, even if it has no exclusive ballast tank, to transport a large amount of drinking water safely and economically without any particular modification.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for transporting drinking water to countries in the Middle East where fresh water is scarce, using the oil tank of an empty oil tanker.

No matter how well an empty oil tank is cleaned, some amount of oil remains on the surrounding wall. Even if you pour clean fresh water into an empty oil tank that has been thoroughly cleaned and transport it as perlast water, the remaining oil will inevitably get mixed in, making it impossible to serve it for drinking.

The conventional method of transporting drinking water using an empty oil tanker is 1) installing a dedicated ballast tank and transporting drinking water by filling it with ballast water 2) transporting bags containing drinking water in containers 3) The oil tank is divided diagonally into two upper and lower chambers using a flexible and stretchable diaphragm, and the upper chamber contains only the crude oil and the lower chamber. A method of transporting the tank with only ballast water and drinking water as ballast water 4) Attach a flexible bag inside the oil tank in advance and open it, and when transporting crude oil, pour the crude oil outside the bag. Get in,
There are methods to carry ballast water outside the bag when empty, and drinking water inside the bag, but method 1) is now available as ships equipped with sufficient dedicated ballast tanks are being built. This was after 1978, and many oil tankers were still using the clean ballast method, in which the tanks were cleaned and filled with ballast water each time they were empty.

Method 2) is not suitable for transporting large quantities because it is not possible to load large quantities of containers on the deck due to the stability of the ship, and it is time-consuming to send back empty containers.

With methods 3) and 4), it is difficult to clean the chamber containing the crude oil, the diaphragm or bag is easily damaged by rubbing against the protrusions or corners of the parts in the oil tank, and if a new diaphragm or bag is added to the oil tank. Regardless of the method used, conventional oil tankers cannot be used to safely and economically transport large quantities of drinking water to Middle Eastern countries. There wasn't.

This invention utilizes the oil tank of a conventional oil tanker, and uses the clean ballast water to contain drinking water in a water-impermeable container that does not have to be contaminated with oil. By submerging and transporting the water, producing this container from clean ballast water at the destination, landing it on land, and providing the drinking water inside the container to consumers,
The aim is to supply large quantities of clean drinking water, free from oil, to Middle Eastern countries at low prices.

Next, the present invention will be specifically explained based on embodiments shown in the drawings.

As shown in Figure 1, a chain-like carrier (4 )make. Attach a long thin string (3) to the end of the carrier.

Next, after cleaning the empty oil tank of the oil tanker and loading clean ballast water, go to the water loading port and open the haunch (7) as shown in Figure 2. The upper machine (8) transports this chain carrier (4) into clean ballast water (
6) Lowering the temperature in mid-summer weather. At this time, the inert gas (9') may leak from the hatch (7), causing injury to the deck worker or igniting the residual vaporized gas in the oil tank. ) into the palast water. The principle of the lifting machine is the same as that of the load sheave of a commercially available chain block, and as shown in Figure 3, the lifting machine fits snugly with the drinking water container (1) around a groove wheel (11) that rotates with power. A large number of matching recesses (12) are provided, and a partition (13) between the recesses is provided with a cutout groove (1) into which a drinking water container connector (2) is fitted.
4), with a drinking water container (1) and a recess in the groove wheel (1).
2), the coupling tool (2) and the notched groove (14) are meshed with each other to prevent them from slipping off from each other, and the rotational force of the groove wheel is For this reason, it is possible to lift the weight of the chain conveyor from the production volume to the lifting machine and the chain conveyor from the lift machine to the bottom of the oil tank, and lift the individual drinking water containers. (1) You can freely roll it up, roll it down, and stop it midway without damaging it.

Once all of the chain carriers prepared in this way are submerged in clean ballast water, connect the string (3) at the end of the chain carrier to the fastener (15) inside the hatch, as shown in Figure 4.
), raise the lower end of the inert gas leakage prevention bag [(10) from the paralast water, close the hatch (7), and set sail.

Once the crude oil loading port number ζ in the Middle East countries has been served, open the hatch (7) as shown in Figure 5, lower the lower end of the inert gas leakage prevention device (10) into the pallast water again, and then Remove the string (3) of the terminal from the clasp (15),
Hang it on the lifting machine (8) and turn it to carry it in a chain ^ (11
) are successively hoisted onto the deck and crawled outboard, where the linkage (2) of the chain carrier is disconnected and, at 16), the consumer number ζ is supplied as individual drinking water containers. The clean ballast water (6) remaining in the oil tank is subjected to SC processing in the same way as before.

As a chain carrier, an impermeable container containing drinking water (
1), instead of directly connecting them with the connectors (2), as shown in Figure 6, a number of them are arranged vertically in a flexible mesh (17) wound into a cylindrical shape, and the containers are connected between the containers ( 18) can also be used.

As another chain-like carrier, as shown in Fig. 7, a water-impermeable container (1) containing a drink is placed in a case (19) with a lid.
This case with a lid is connected with a connector (2) that is thinner than the diameter of the case.When separating the connectors of the chain-like carrier at the destination number, Alternatively, the lid (20) of the lidded case can be opened, the drinking water container (1) inside can be taken out and stored. In this way, by rubbing, there is no need to worry about the residual oil in the clean ballast water mixing with the drinking water in the container, and the drinking water is sealed in an impermeable container until it reaches the consumer. It is extremely hygienic as it is fresh.

By doing this, even a conventional oil tanker without a dedicated ballast tank can safely and economically transport large amounts of drinking water to the Middle East countries without any special modification.

[Brief explanation of drawings]

Figure 1: Perspective view of a chain-like carrier made by directly connecting drinking water containers with connectors Figure 2: Cross-sectional view of an oil tanker loading chain-like carriers Figure 3: Ditch wheel of a lifting machine Figure 4 is a cross-sectional view showing the structure of an oil tanker at sea with a chain carrier submerged in clean ballast water Figure 5 is a cross-sectional view of an oil tanker which is unloading a chain carrier Figure 6 is a tube Figure 7: Perspective view of a chain-like carrier using a rolled-up net Figure 7: Perspective view of a chain-like carrier using a case with a lid

Claims (1)

[Claims] 1) A chain carrier made by vertically connecting a number of water-impermeable drinking water containers filled with drinking water in a bendable manner is filled with clean ballast water from an empty oil tanker. A method of transporting drinking water in which the chain-like carrier is lifted out of the oil tank at the destination, the connecting parts are separated, and the drinking water is made into individual containers for drinking. 2) Connecting the drinking water containers directly. Instead, the method for transporting drinking water according to claim 1 uses a chain-like transport device made by arranging a number of containers vertically in a refractable net wound into a cylindrical shape and narrowly tightening the middle between the containers. 3) Using a chain-like carrier made by connecting a number of cases with lids vertically so that they can be bent freely, and storing an impermeable drinking water container filled with drinking water inside each case with a lid, it is possible to reach the destination. , by removing the drinking water container from the case with a lid.
Drinking water transportation method described in claim 1