EP1140652B1 - Transport container for dangerous liquids - Google Patents

Abstract

A transport container for dangerous liquids is provided with a filling dome (4) which can be sealed by a dome cap (5) and with a pressure compensation valve (22). An inliner (6) comprised of film is arranged inside the transport container and is connected to a tension ring which is accommodated in the filling dome (4). Said tension ring is sealed by a cap insert (13) having a valve opening (15) which is sealed by a flutter valve plate (16). A gas permeable ring (9) is arranged between the tension ring and the filling dome (4).

Description

The invention relates to a transport container for liquid Dangerous goods with a lockable by a dome cover Filling dome, and with a pressure compensation device.

Usually, the liquid dangerous goods to be transported directly into those welded from sheet steel, for example Filled transport container, which is sealed by the dome lid is closed. To the transport container of one to relieve increased gas pressure caused, for example, by Evaporation of the dangerous goods under heating, by permanent chemical residual reactions and / or caused by gases, it is released by the transport movements known, in the top wall of the transport container next to the Filling dome to provide a pressure compensation valve through which gases can escape at increased pressure.

The interior of the container is transported by the dangerous goods contaminated and must therefore be used again of the transport container are laboriously cleaned. Since that Pressure compensation valve directly with the interior of the tank communicates in which the liquid dangerous goods there is a risk that if the Internal pressure not only gas, but also liquid dangerous goods escapes and contaminates the outside of the container or even the environment.

In addition, foil containers are also known, for example pressure equalization valves on their screw caps to have an impermissible increase in internal pressure prevent. However, these film containers are not as Suitable and approved hazardous goods containers. There is also here too there is the danger that not only with increased internal pressure Gas, but also liquid through the pressure compensation valve exit.

The object of the invention is therefore a transport container the genus mentioned in such a way that a Contamination of the transport container on the inside and its outside as well as the environment through escaping Transport goods are prevented.

This object is achieved in that a Inliner made of foil with one in the filling dome inserted clamping ring is connected that the clamping ring through a lid insert is closed that the lid insert a valve opening closed by a flap valve plate has and that between the clamping ring and the Filling dome a gas passage ring is arranged.

The use of a substantially sack-shaped, from existing liner prevents a flexible film Contamination of the container interior and enables one simple and safe residual emptying. The location of the inliner is both when filling and during transport secured that the inliner through the clamping ring in the filling dome is set, the clamping ring the filler opening of the Encloses inliners.

To prevent, in particular, the transport movements the liquid dangerous goods get to the dome cover is the filling opening formed by the clamping ring through a Lid insert closed. The through the flap valve plate closed valve opening of the lid insert forms Pressure compensation valve of the inliner, which increases when the Internal pressure opens. Since the flutter valve is one Forms surge protection, it is largely ensured that the valve opening only gas escapes to the pressure compensation valve of the transport container and there can leak. A pressure increase in the inliner is almost without resistance to the interior of the cathedral and the space between passed on to the inliner and the container wall; the pressure can become a pressure equalization valve or another pressure compensation device of the transport container continue.

The between the tension ring carrying the inliner and the Filling dome arranged gas passage ring has one double function. If the pressure compensation valve of the Transport container in the ceiling wall on the side next to the Filling dome is located, the gas passage ring allows that the gas emerging from the valve opening of the cover insert in the space between the inliner and the ceiling wall arrives and from there through the pressure compensation valve can leak.

But if the pressure equalization valve of the transport container located in the dome cover, this can be done by the Valve opening of the lid insert with increased internal pressure escaping gas directly to the pressure compensation valve in the Dome cover. In this version of the transport container but there is when using an inliner Problem that when filling the above the inliner air volume must be removed. This amount of air can escape upwards through the gas passage ring.

That which closes the valve opening of the cover insert Flutter valve plate is at the highest point of the inliner and thus at the greatest possible distance from the liquid surface arranged and acts as a liquid barrier since it is one Gushing loads provide considerable resistance. Even if a small amount of liquid escapes, this remains in the plate-shaped lid insert if necessary, run back. Because of the large area Flutter valve can be a proportionate increase in pressure large amount of gas without significant flow resistance penetrate.

The inliner described can be used with conventional transport containers without any design changes be used. The gas passage ring is preferably in used a dome profile ring. By different choices the dimensions of this dome profile ring is an adjustment to different dome dimensions and dome profiles little effort possible.

The inliner is preferably between the clamping ring and the Gas passage ring jammed. It will do so in a simple manner a fastening of the inliner made of foil on Tension ring reached.

Fig. 1 in räumlicher, auseinandergezogener Darstellungsweise einen Transportbehälter für flüssiges Gefahrgut mit geöffnetem Domdeckel und einen Inliner vor dem Einsetzen,

Fig. 2 einen Schnitt durch den Transportbehälter nach Fig. 1 mit eingesetztem Inliner,

Fig. 3 einen vergrößerten Teilschnitt durch den Einfülldom des Transportbehälters nach den Fig. 1 und 2 mit den eingesetzten Teilen,

Fig. 4 in einem Schnitt entsprechend der Fig. 3 die eingesetzten Teile in auseinandergezogener Darstellungsweise,

Fig. 5 eine Draufsicht in Richtung des Pfeiles V in Fig. 3 und

Fig. 6 einen Schnitt entsprechend der Fig. 2 bei einer abgewandelten Ausführungsform des Transportbehälters.

The invention is explained in more detail below using an exemplary embodiment which is illustrated in the drawing. It shows:

1 is a spatial, exploded view of a transport container for liquid dangerous goods with an open dome lid and an inliner before insertion,

2 shows a section through the transport container according to FIG. 1 with an inliner inserted,

3 shows an enlarged partial section through the filling dome of the transport container according to FIGS. 1 and 2 with the parts used,

4 in a section corresponding to FIG. 3, the parts used in an exploded view,

Fig. 5 is a plan view in the direction of arrow V in Fig. 3 and

Fig. 6 shows a section corresponding to FIG. 2 in a modified embodiment of the transport container.

The transport container shown in FIGS. 1 and 2 for liquid dangerous goods have a welded sheet steel Outer container 1 on the in a transport frame 2nd is arranged. In a ceiling wall 3 of the transport container there is a filling dome 4, which is shown in FIG. 1 by a Dome lid 5 shown open can be closed tightly.

In the outer container 1 is a flexible plastic film existing inliner 6 arranged (Fig. 2), which in Fig. 1 in State before insertion is shown. The top edge or neck 7 of the liner 6 is between an inner one Clamping ring 8 and an outer gas passage ring 9 clamped, as shown in Figures 3 and 4 in detail. To projecting mandrels 10 on an upper flange of the gas passage ring 9 hold the edge of the liner and protrude into Bores 11 of an upper flange of the clamping ring 8.

The filling opening 12 enclosed by the clamping ring 8 is closed by a plate-shaped cover insert 13, the in its base 14 a large central Has valve opening 15. Is above the valve opening 15 a flap valve plate 16 preferably made of flexible Foil material, which at several welding points 17 (Fig. 5) is connected to the insert base 14 and a pressure relief valve of the inliner 6 forms.

A dome profile ring 18 fits into the filling dome 4 used and has an upper flange 19 which in sealed condition of the transport container is arranged between the filling dome 4 and the dome cover 5.

The dome profile ring 18 bridges the distance between the Filling dome 4 and the gas passage ring 9. By different Execution of this dome profile ring 18 is a Adaptation to different dome diameters achieved. The gas passage ring 9 has fins 20 on its outside on, between which gas passage channels run.

As indicated in Fig. 2 with arrows, one can Overpressure in the inliner 6 gas through the flap valve plate 16 pressure relief valve formed in the space between the Exit cover insert 13 and dome cover 5. From there the gas passes through the gas passage channels of the gas passage ring 9 in the container interior 21 above the inliner 6 and from there through a side next to the filling dome 4 in the top wall 3 arranged pressure compensation valve 22 and is released into the atmosphere in this way. At the Filling the inliner 6 becomes from the interior 21 displaced between the inliner 6 and the ceiling wall 3 Air volume also through the pressure compensation valve 22 drained.

In the embodiment shown in Fig. 6 one There is a pressure compensation valve in the transport container 22 'in the dome cover 5. As also indicated there with arrows , the gas escaping through the flutter valve flows through the pressure compensation valve 22 'in the atmosphere. That at Filling air volume displaced from the container interior 21 arrives during the filling process through the gas passage ring 9 Outside.

By using the inliner 6 with pressure compensation device there is both contamination of the container interior through the liquid dangerous goods ingested as well Contamination of the outside of the container or the environment prevents liquid dangerous goods escaping at overpressure. The remaining emptying of the transport container becomes essential relieved because at the end of the emptying process the whole Inliner is removed. A complex cleaning of the The interior of the container is therefore not necessary.

The arrangement of the flap valve in the base 14 of the plate-shaped cover insert 13 largely prevents one Fluid leakage, with any minor leakage Amounts of liquid in the plate-shaped cover insert 13 can be caught and flow back into the inliner.

The inliner 6 and all related parts, in particular the clamping ring 8, the gas passage ring 9, the Dome profile ring 18, the cover insert 13 and the flap valve plate 16 preferably consist largely of chemically resistant material, especially polypropylene.

Claims (3)

1. Transport container for dangerous liquids with a filling dome (4) which can be sealed by a dome cap (5) and with a pressure compensation valve, characterised in that an inliner (6) made of plastic film is connected to a tension ring (8) accommodated in the filling dome (4), that the tension ring (8) is sealed by a cap insert (13), that the cover element (13) exhibits a valve opening (15) sealed by a flutter valve plate (16) and that a gas-permeable ring (9) is arranged between the tension ring (8) and the filling dome (4).
2. Transport container in accordance with claim 1, characterised in that the inliner (6) is clamped between the tension ring (8) and the gas-permeable ring (9).
3. Transport container in accordance with claim 1, characterised in that the gas-permeable ring (90 is set in a dome profile ring (18).

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