DE102004034254A1 - Surface drain for flammable environment has each section fitted with an earthing strip with separate earth connection - Google Patents

Abstract

A surface drain for use in areas with flammable risk materials, e.g. petrol stations, chemical works etc. has the separate drain sections (2) each fitted with an earthing strap separately connected to an earthing point (4). The system is especially applicable for insulating materials, e.g. polymer concrete. Any cover panels for the drain sections are similarly earthed.

Description

The The invention relates to a drainage channel according to the preamble of claim 1 in particular for gas stations or industrial plants containing flammable or explosive substances be handled.

It are already numerous drainage channels for the discharge of liquids known from, for example, paved surfaces. These are used in the area of traffic areas, like roads, pedestrian areas or bike paths. As a rule, the drainage channels have a cover on. The material of the drainage channel and / or the cover must be adapted to the respective requirements, in particular load requirements be.

In Drainage channels made of polymer concrete have often become a thing of the past proven, the high strength with low mass and excellent Have processing properties. These drainage channels made of polymer concrete or other non-electrically conductive materials, however the disadvantage that it can lead to electrostatic charges, for example, when a liquid as intended she flows through.

Of the Invention is therefore based on the object, a device for Discharge of liquids off not or only slightly to create conductive materials that are the disadvantages of the state the technology does not have.

According to the invention Problem solved by a device according to claim 1. preferred embodiments are in the claims 2 - 10 claimed.

It was for the expert very much amazing and not to be expected in the device according to the invention no or only a very small electrical potential that is could discharge in the form of sparks, is available. As a result, the device according to the invention, for example for drainage of establishments handling explosive and / or combustible substances, be used.

Of the Equipotential bonding of poorly conductive drainage devices can by the device according to the invention be improved.

The Avoiding the build-up of an electrical potential is carried out according to the invention a means for equipotential bonding with the environment of the device. Environment in the sense of the invention is e.g. the surrounding the device Soil and / or other segments of the device.

Of the Equipotential bonding is preferably carried out by a so-called grounding. There is an outflow of electrostatic charge in the Soil that is electrically conductive due to its moisture. The earthing is preferably carried out by an electrical conductor, which reaches deep into the ground.

The Device can be made of any material. Preferably, however, it is made of polymer concrete. Polymer concrete in The meaning of this invention arises from the combination of a polymer component with a mineral component, the mineral component provided bound by the polymer component.

Preferably If the device consists of several segments, each segment at least a means for equipotential bonding is arranged and / or the segment electrically conductively connected to each other. It goes without saying that in the latter variant at least one segment be grounded got to.

The Equipotential bonding means may e.g. an electrically conductive Rod, an electrically conductive tissue, electrically conductive particles and / or an electrically conductive plastic. The funds are preferably distributed in the device so that any Location of the device, but in particular its surface, the with the liquid to be discharged in contact is at least almost at the same potential as the Environment surrounding the surrounding soil, for example.

The Means for equipotential bonding can at any point of the Device can be arranged. Preferably, the agent covers at least one Part of the surface the device, in particular the part of the surface, the with the liquid to be discharged comes into contact. Very particularly preferred is at least in the area the lowest point of the channel cross-section a means for equipotential bonding arranged.

Especially Preferably, the agent is fixed to a gutter or a segment a gutter connected, preferably poured therein and / or chemically and / or physically bound.

Further preferably, means for equipotential bonding at least partially part of the plastic mixture, for example, the poly-concrete mixture from which the device is made. In this Ausfüh At least the surface of the device according to the invention should be designed in such a form.

Of the Expert understands that in all the above preferred embodiment an electrically conductive connection must be present with the the means has an electrically conductive contact and with the a possibly existing electrical potential, for example can be derived into the soil.

In a preferred embodiment is the device according to the invention an upwards open channel

Farther Preferably, the device is a drainage channel, preferably equipped with a cover. Special opportunities arise when using metal covers. In this case There is a conductive connection over the entire route of the Drainage channel, provided that the individual parts of the metal cover are electrical conductive Contact. In a preferred embodiment of the invention become the means for potential dissipation so on the metal cover arranged that a conductive connection between the potential conductor and the cover is created. In any case, a grounding is the conductive provide associated covers at least one place.

The inventive device lets up make any way. For example, there is the possibility easy and inexpensive Means for potential dissipation, preferably of metal, pour into the molding, of which at least a part protrudes into the gutter. The electric conductive connection of the funds with each other is advantageous at the ends of the segments when laying the drainage channel. In another preferred embodiment become electrically conductive particles, for example nanoparticles incorporated into the plastic mixture.

In the following the invention is based on the 1 - 4 explained. These explanations are merely exemplary and do not limit the general inventive concept.

1 shows a segment of a drainage channel.

1a shows a segment of a drainage channel.

2 shows two segments of a drainage channel according to 1 ,

3 shows another embodiment of the device according to the invention.

4 shows the cross section of a segment.

1 shows a segment of a drainage channel 1 , which can be designed with or without cover. On the gutter surface 2 a liquid flows, creating an electrostatic charge. The potential conductor 3 is at the lowest point in the channel cross section on the channel surface 2 arranged. 1 shows a relatively short potential conductor 3 which is arranged only on part of the length of the segment while 1a otherwise the same structure, extending over the entire length of the segment potential diverter 3 shows.

In both examples, the potential diverter 3 about the end of the segment 1 protruding, angled and running vertically downwards running. There, the discharge of the electrostatic charge via the ground 4 of the potential conductor 3 , The representation remains schematic and exemplary, since any, known to the expert method of grounding is possible.

2 shows two of the 1 known segments of a drainage channel 1 and 1' with potential conductors not running the full length of the segment 3 and 3 ' , These are via a connection shown schematically 5 electrically connected. Only a potential conductor 3 is with grounding 4 directly connected. In the example according to 1a the potential derivation is analogue.

3 shows another embodiment of the present invention with a drainage channel 1 and a cover 6 , The potential conductor 3 is here on an electrically conductive cover 6 arranged and runs from there to a lowest point in the cross section of the channel. Prerequisite for this arrangement is a conductive connection between the cover 5 and potential conductors 3 , The discharge of the electrostatic charge takes place via a ground 4 that's here at the cover 5 connected.

The potential conductor 3 can be made in this embodiment limp, for example, as a band that hangs in the drainage channel into and, where appropriate, is fixed there in the lowest point. Likewise, however, is an advantageous embodiment of the potential diverter 3 as a solid, additional support conceivable.

4 shows the cross section of a segment of a drainage channel 1 with poured Po tenzialableiter 3 , The potential diverter protrudes from the surface of the drainage channel. The presentation of the 4 is schematic and by no means to scale. As an alternative to this variant, the person skilled in the art will recognize, for example, the use of a wire mesh or an electrically conductive surface, for example made of plastic, which is earthed. Another alternative is a very thin metal layer that is grounded and evaporated, for example, on the inside of the surface of the channel. Yet another alternative is a plastic layer on the surface of the channel, which has nanoparticles of an electrically conductive material. Such plastics are then electrically conductive.

1, 1'

segment a drainage channel

2, 2 '

trough surface

3, 3 '

A surge

4

grounding

5

connection the surge arrester

6

cover

Claims (11)

Device for discharging liquids from, for example, fixed surfaces, in particular a drainage channel, characterized in that it comprises at least one means ( 3 ) for equipotential bonding with their environment. Device according to claim 1, characterized in that that with the agent electrostatic charges are derivable. Device according to Claim 1 or 2, characterized that they are essentially made of non-conductive materials, in particular Polymer concrete, is made. Device according to one of the preceding claims, characterized in that it consists of several segments and that on each segment at least one means ( 3 ) is arranged and / or that the segments are electrically conductively connected to each other and on at least one segment means ( 3 ) is arranged. Device according to one of the preceding claims, characterized in that the means ( 3 ) covers at least part of the surface of the device, preferably the channel, and is preferably arranged at the lowest point of the channel cross-section. Device according to one of the preceding claims, characterized characterized in that the means is fixedly connected to the device, is preferably poured therein. Device according to one of the preceding claims, characterized in that it is designed as an upwardly open channel or through a cover ( 6 ) is executed closed. Device according to one of the preceding claims, characterized in that it comprises a cover ( 6 ) and that the means ( 3 ) on the gutter and / or on the cover ( 6 ) is arranged. Device according to claim 8, characterized in that several covers ( 6 ) are electrically connected to each other. Device according to one of the preceding claims, characterized in that at least one means ( 3 ) and / or a plurality of interconnected electrically conductive channels and / or covers ( 6 ) are earthed at least one place. Use of the device according to any one of claims 1-10 in Areas where explosive substances are handled.