DE10217997B4 - Liquid tank in double wall design - Google Patents

Abstract

liquid tank in double wall design, at the outside wall (1) serves as a catch tank, with at least partially transparent Tank walls to Content control, characterized in that in a tank side area the inner wall (2) with one or more, a few centimeters wide, vertically arranged opaque color strip is provided.

Description

The The invention relates to a liquid tank in Double wall construction, when the outside wall as Auffangtank serves, with at least partially transparent tank walls for Content control.

Double wall tanks have to due to safety regulations regularly for water polluting liquids, eg. As fuel oil used become.

The DE 200 05 521 U1 shows such a double wall tank with the features specified. This known double-wall tank is provided in particular for fuel oil.

at intended for heating oil Double wall tanks of the series "Eurolentz comfort" of the company SOTRALENTZ in Drulingen (FR) are the space used as leakage detection space between foreign and inside wall an integrated oil leak warning indicator and the inner container a mechanical level indicator assigned.

After DE 297 00 436 U1 For example, the outer container can be designed as a three-layer carrying and jacket body for the inner container.

According to the DE 299 13 126 U1 may be disposed between the walls of the inner and outer container, a fire-resistant shell.

The DE 299 09 907 U1 shows a double-walled container, in which between the inner and outer wall, a circumferential corrugated hose is arranged such that interconnected interspaces arise in which any leaking liquid may spread arbitrarily and thus can engage with a leakage sensor.

task The invention is now to dispense with separate display devices for level and leaks.

These Task is with a liquid tank according to claim 1 solved.

The Invention is based on the general idea, in the tank side area the inner wall with one or more, a few inches wide, vertical arranged to provide an opaque color strip to a good optical separation between tank contents and possibly in the Space between outside and inner wall of penetrated leakage to reach.

Otherwise it is preferably provided, inner and outer walls of the liquid tank in all tank wall areas where both the level and also possibly from the inner container leaked leak fluid should be visible, translucent, but not crystal clear, so the two water levels (Filling level, Leakage level) are clearly visible, but against each other in the degree of brightness of the filling picture and in the image sharpness clearly distinguish the upper level edge, d. H. by exploitation of optical laws of reflection and refraction of light different media and layers of material become level and leakage directly visible.

• a) Außenwand und Innenwand sowie dazwischen angeordnete Abstandselemente sind gut transluzent, jedoch nicht glasklar, so dass sie gebrochenes Licht enthalten.
• b) Für alle diese Teile wird gleicher, gut transluzenter, glasfaserverstärkter Kunststoff (GFH) verwendet, der aus identischen Grundkomponenten besteht und im gleichen Verfahren verarbeitet wird.
• c) Die Schichtdicken von Außenwand und Innenwand sowie Leckerkennungsraum müssen in sich möglichst konstant sein. Dagegen können sie jedoch gegeneinander zweckbedingt abweichen.
• d) Die Schichtdicke sowohl der Außenwand wie auch der Innenwand soll wegen der Erhaltung der guten Transluzenz 10 mm nicht übersteigen. Aus dem gleichen Grund soll die Schichtdicke des Leckerkennungsraumes 100 mm nicht übersteigen. Letztere soll auch 0,1 mm nicht unterschreiten, da sonst der ungehinderte Fluß von Leckageflüssigkeit nicht mehr sichergestellt ist.

In addition, the following features are structurally preferred:

• a) outer wall and inner wall as well as interposed spacer elements are well translucent, but not crystal clear, so that they contain broken light.
• b) For all these parts the same, well translucent, glass fiber reinforced plastic (GFH) is used, which consists of identical basic components and is processed in the same process.
• c) The layer thicknesses of outer wall and inner wall as well as leak detection space must be as constant as possible. On the other hand, however, they can differ from one another due to their purpose.
• d) The layer thickness of both the outer wall and the inner wall should not exceed 10 mm because of the preservation of the good translucency. For the same reason, the layer thickness of the leak detection chamber should not exceed 100 mm. The latter should not be less than 0.1 mm, since otherwise the unhindered flow of leakage fluid is no longer ensured.

Further advantageous embodiments of the invention are the subject of the dependent claims.

following The invention will be explained in more detail with reference to the drawing, in the basic Details are shown. Show

Ia , b, c the total tank in three main views,

II the cut AA I and

III the cut BB off I ,

A closed or open top tank consists of translucent side walls ( 5 ), Ground ( 6 ) and possibly roof ( 7 ).

in this connection At least the bottom and the side walls are double-walled. Because the roof i. d. R. not liquid In this case, it can also be single-walled.

All liquid surfaces on the other hand, they must be double-walled, ie the outer and inner walls are firmly connected to each other at least at several points distributed over their entire surface. The resulting inner and outer tanks must be tight in each case. The mutual dimensions shall be such that there is a space between the outer surface of the inner tank and the inner surface of the outer tank ( 3 ) is present, which serves as a leak detection room.

In the floor and roof area ( 6 + 7 ) may possibly be dispensed with the translucency of the materials, because these areas usually have no effect on the optical detection of the tank contents or the leakage liquid.

The distance between the tank outer walls ( 1 ) and the tank inner walls ( 2 ) is separated by spacers ( 4 ), which can be connected non-positively with the Tankaußen- or inner walls or loosely get up on this. About the formation of these spacers decides the expediency. It should also be noted that the unimpeded flow of the leakage fluid is maintained.

One additional security for the described tanks is achieved by at least the whole external tank a glass fiber reinforced Plastic is used, which also has the property that he with strong impact stress does not splinter, but only on the direct impact site by clearly visible microcracking (Whitening) responding. Such material formulations are well known.

Thereby is a virtually complete protection of the inner container given impact load. In addition, any violent damage of the outer container easily detected and without impairment of the inner container to be repaired.

tanks in the present design achieve a very high level of security and still relatively easy and cheap.

Especially well, they are suitable for water pollutant Liquids.

Claims (11)

Liquid tank in double wall design, in which the outer wall ( 1 ) serves as a catch tank, with at least partially transparent tank walls for content control, characterized in that in a tank side region, the inner wall ( 2 ) is provided with one or more, a few centimeters wide, vertically arranged opaque color stripes. Liquid tank according to claim 1, characterized in that the intermediate space ( 3 ) between inner and outer wall ( 1 . 2 ) has a layer thickness of at least 0.1 mm for an unimpeded flow of leakage liquid. Liquid tank according to claim 1 or 2, characterized in that the outer wall ( 1 ) has a constant as possible layer thickness. Liquid tank according to one of claims 1 to 3, characterized in that the inner wall ( 2 ) has a constant as possible layer thickness. Liquid tank according to one of claims 1 to 4, characterized in that the space serving as a leak detection space ( 3 ) has a constant as possible layer thickness. Liquid tank according to one of claims 1 to 5, characterized in that the layer thickness of both the outer wall ( 1 ) as well as the inner wall ( 2 ) does not exceed 10 mm to maintain good translucency. liquid tank according to one of the claims 1 to 6, characterized in that the layer thickness of the leak detection space in the range between 0.1 mm and 100 mm. Liquid tank according to one of claims 1 to 7, characterized in that the outer and inner walls ( 1 . 2 ) consist of well translucent (translucent) but not crystal clear material, so that level edges of level and penetrated between the walls of the double wall leakage by brightness level of the filling image and sharpness of the upper level edge are distinguishable. liquid tank according to one of the claims 1 to 8, characterized in that at least the entire outer tank made of glass fiber reinforced plastic is made, which has the property that it is strong impact not splintering, but only at the direct impact point by clearly visible microcracking (white fracture) responding. Liquid tank according to one of claims 1 to 9, characterized in that between the walls ( 1 . 2 ) arranged spacer elements ( 4 ) are frictionally connected to the adjacent wall surfaces or loosely on this. Liquid tank according to one of claims 1 to 10, characterized in that between the walls ( 1 . 2 ) arranged spacer elements ( 4 ) like that are designed so that they allow an unobstructed flow of leakage fluid in all directions.