FI90031C - Inner plastic bag for use in fuel and chemical transport containers, rail and vehicle traffic and vessels - Google Patents

Description

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Inner plastic bag for use in fuel and chemical transport tanks for rail and road transport and ships. Inner plastics are used in the manufacture of chemicals and chemical transport equipment, and other transport and construction equipment.

The invention relates to an inner plastic bag of the type set out in the preamble of claim 1 for use in fuel and chemical transport tanks for rail and road transport and ships.

The problem with the transport of fuel and chemicals by rail and road is that, after unloading, the transport containers cannot be used without washing to transport substances other than the unloaded material. When washing is not possible everywhere, the transport containers have to be transported empty unnecessarily and no return loads can be obtained. Washing of transport containers is sometimes very cumbersome and expensive when transporting substances which adhere firmly to the walls of the transport containers. In addition, there is a risk of harmful substances being released into the environment during tank washing and that persons carrying out tank washing come into contact with harmful substances.

Ships stranded run the risk of ship burning. :: Oil or harmful substances are transported into the sea from transport containers. Washing of ship's transport tanks also releases harmful substances into the sea. As only a small proportion of ships have double bottoms, the current problems will continue for a long time.

«In the above cases, the use of a replaceable inner plastic bag made of a plastic grade suitable for the substance to be transported inside the container, having the characteristics set out in the appended claim 1, provides the following advantages: 2 90031

In the case of fuel and chemical transport for rail and road transport, after emptying the tank, the former plastic bag could be removed and replaced with a new plastic bag, so that the tank would be immediately ready to transport another substance and there would be no unnecessary empty transport. This would substantially improve the utilization rate of the equipment. Washing of transport containers and the associated disadvantages would be completely avoided. Disused plastic bags could, depending on the case, be delivered to a landfill, in the case of hazardous substances, to a hazardous waste facility or to a facility designed for washing, where the recovery of hazardous substances and the safety of workers would be better taken into account. After a sufficient number of uses, the raw material in the plastic bags could be reused.

Placing a pleated plastic bag on the corrugated fuel and transport tanks of ships could prevent oil and transported substances from entering the sea while the ship is running aground.

The plastic should be so strong that when running aground, the inward-facing, sharp-edged side or bottom plates of the ship will not break the plastic that would stretch from its creases at the point of impact. After emptying the transport tank in the port, the used plastic bag could be replaced with a new one, so that the ship could immediately take another substance from the new cargo. The washing of used plastic bags could be arranged in the port, so that no harmful substances would enter the sea.

In the following, the invention will be illustrated by means of an exemplary embodiment with reference to the accompanying drawing, in which Fig. 1 shows a schematic sectional view of an inner plastic bag in its use situation; and Fig. 2 shows an enlarged detail of Fig. 1 along the section line II-II.

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II

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The inner plastic bag comprises a diaper 1 made of a plastic suitable for the substance to be transported. The jacket has an opening 2 which can be tightly closed at the filling opening of the transport tank. By cutting open the end of the plastic hose, the flow of the liquid to be transported is achieved, which can be regulated by the drain valve 6 of the transport tank. If this is not possible in some cases, a separate valve can be attached to the end of the plastic hose. The plastic hose 4 prevents the valve 6 of the transport tank from getting dirty from the material to be transported. The diaper 1 is provided with a tight, openable and closable connection 5 around the entire diaper, by means of which the diaper can be divided into two easily washable parts.

If necessary, the filling and outlet opening in the jacket can be made at the desired location by hot welding the finished parts of the filling opening 2 and the outlet opening 3 and 4 into the jacket.

In the fuel and transport tanks of ships, the plastic bag is made much larger than the tanks and installed in the tank folded.

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Claims (3)

1. Inner plastic bag for use in fuel and chemical transport cisterns on railways and cars and vessels, comprising a sheath (1) made of a plastic suitable for the transported material, which bag has a seal which can be sealed close to the filling cistern opening (2) and which volume (1) is significantly larger than that of the cistern, whereby it is mounted in folds, characterized in that the manifold (1) can be exchanged and that the menin joins a membrane-shaped plastic hose (4) which extends through the cistern's discharge valve. ), which is closed at its lower end. 2. An inner plastic bag according to claim 1, characterized in that a plastic tube (3), which is attached to said diaphragm-like plastic tube (4), is attached to the outlet valve tube contained in the transport valve tube. Inner plastic bag according to claim 1 or 2, characterized in that the mannequin (1) is provided with a washable, tight-fitting connection (5), which can be opened and closed, all over the menin. > · · Φ M ··