Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16N—LUBRICATING
  • F16N31/00—Means for collecting, retaining, or draining-off lubricant in or on machines or apparatus
  • F16N31/006—Drip trays
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D90/00—Component parts, details or accessories for large containers
  • B65D90/22—Safety features
  • B65D90/24—Spillage-retaining means, e.g. recovery ponds

Definitions

• the present invention relates to a device for recovering liquids, in particular flammable liquids, of the type consisting of a recovery tank or pit containing an absorbent element for said liquids and a cover through which liquids flow to the tank or the pit.
• this type of recovery device is used with electrical transformers.
• This oil being flammable, it is important to be able to recover it in order to avoid its propagation and / or its inflammation.
• Known recovery devices generally consist of a recovery tank or pit made of masonry and having a protective grid placed on the upper opening of said tank or pit. This device is placed under the transformer and, during an accidental flow of liquid, this liquid falls through the grid into the tank or pit and is absorbed by the absorbent element.
• the subject of the invention is a device for recovering a liquid, in particular a flammable liquid, of the type consisting of a recovery tank or pit containing an absorbent element for said liquid and a cover mounted on the 'upper opening of said tank or said pit and through which flows said liquid to the recovery tank, characterized in that the cover comprises a substantially closed chamber having inlet openings in its upper part and outlet openings in its bottom above the recovery tank or pit, the upper surface of the cover comprising at least one inclined surface for guiding the liquid to the inlet ports of ⁇ said chamber.
• the inclined surface (s) of the cover favors the supply to the liquid towards the substantially closed chamber of the cover so as to prevent any stagnation of the liquid outside the cover.
• the atmosphere prevailing in the substantially closed chamber of the cover being relatively poor in oxygen, said chamber functions as an extinguishing chamber or airlock during ignition and contributes to promoting the insulation between the interior of the tank. or the recovery tank and the outside ambient air.
• the liquid collected by the cover is ignited, it is systematically channeled and guided towards the substantially closed chamber where its passage through a medium containing little oxygen tends to cause the extinction of the fire.
• the liquid is then brought to the tank or the recovery pit through the outlet openings of the cover chamber.
• the presence of the cover prevents the spread of inflammation outside the device.
• said chamber comprises at least one inclined surface for guiding towards the outlet orifices.
• a recovery device makes it possible to safely and efficiently collect liquids originating either from an accidental escape or from a voluntary flow, said liquids even if they ignite during their escape being extinguished during their passage through the substantially closed chamber of the cover acting as an airlock.
• Such a device is preferably used in association with electrical transformers but can be used in association with any type of installation in which it is necessary to recover a liquid which can escape accidentally or which can be evacuated voluntarily from said installation. and which one wishes to isolate from the rest of the installation.
• the cover of the device can be mounted either fixed or mobile on the tank or the recovery pit.
• this comprises, on one of its side walls, means suitable for allowing direct access inside said collecting tank other than by its open upper end, such as a hatch, a drawer, a porthole, etc. This avoids the systematic removal of the cover during maintenance of the recovery device.
• the cover according to the invention can be rectangular, square, circular and, in any case, adapted to the shape and dimensions of the open upper end of the recovery tank or the pit.
• the cover according to the invention can be produced in different thicknesses of steel, stainless steel, copper, brass, lead, cast iron, PVC or composite materials.
• Such a recovery device no longer requires an addition of dry stones, ensures a complete seal of the recovery tank or pit.
• it preferably has sufficient mechanical strength to support the weight of an operator when it is put in place.
• the cover of the liquid recovery device preferably of rectangular or square section, consists of a bottom bordered by vertical walls having a rim projecting from the side outwards, the bottom being constituted by the two walls of a concave dihedral whose edge forms the longitudinal median axis of said cover.
• the substantially closed chamber of the cover is defined between a portion of said concave dihedral connected by lateral connecting walls, arranged on either side of the edge of the concave dihedral, at the ends of the walls of a convex dihedral, the edge of which extends parallel to and above the edge of the concave dihedral in the same vertical plane.
• the inlet openings are preferably made at the intersection of at least one substantially vertical side wall of said chamber with an inclined surface for guiding towards said inlet openings, for example along the intersection between the walls of the concave dihedral and the substantially vertical connecting walls, and the outlet orifices are provided in the bottom of the chamber, preferably along the edge of the concave dihedral.
• Figure 1 shows a perspective view from above of a cover according to a preferred embodiment of the invention
• Figure 2 shows a top plan view of a cover according to Figure 1;
• Figure 3 shows a sectional view along a line III-III of the cover according to Figure 2.
• FIG. 4 represents a sectional view along line IV-IV of the cover according to FIG. 2.
• a liquid recovery device comprises a recovery tank (not shown) of rectangular section containing an absorbent element for the liquid, said recovery tank being closed by a cover C.
• This cover C represented in FIG. 1, comprises a bottom F constituted by the walls 1 of a concave dihedral defining an edge 2 forming the central longitudinal axis of the bottom F.
• the bottom F is bordered by vertical side walls P provided at their upper end with edges R projecting outwards. These edges R preferably cooperate with the upper edge of the recovery tank or of a recovery tank so as to position the cover C on the recovery tank or tank, the edge 2 formed by the walls 1 of the dihedral concave being thus positioned towards the inside of the recovery tank or pit. At least two opposite edges R can also form or include lifting lugs allowing the positioning and removal of the cover C.
• a convex dihedron is placed, the walls 3 of which are connected to the walls 1 by vertical connecting walls 3 ', the edge 2' formed by the walls 3 of the dihedron. convex extending above and parallel to the edge 2 of the concave dihedral in the same vertical plane X.
• This chamber 5 is provided with inlet ports 4 and outlet ports 6 so as to allow the passage of the liquid from the outside to the inside of the recovery tank through said chamber 5.
• the inlet orifices 4 are preferably formed along the intersections between the vertical connecting walls 3 ', constituting the side walls of the chamber 5, and the inclined walls 1 of the concave dihedral.
• liquid falling on a wall 1 is necessarily entrained by the slope of said wall 1 towards the inlet orifices 4 while liquid falling on the walls 3 is also automatically guided, by the inclined slope of the walls 3 towards the connecting walls 3 ′ substantially vertical and therefore, towards said inlet orifices 4.
• these inlet orifices 4 are of semicircular section.
• the bottom of the substantially closed chamber 5 being constituted by the walls 1 of the concave dihedral, the liquid entering the chamber 5 is guided towards the edge 2 where the outlet orifices 6 are formed, preferably of circular section corresponding to twice the inlet ports 4.
• liquid escaping from an installation such as an electric transformer located above the recovery device according to the invention falls on the inclined walls 1 or 3 of the cover and is guided towards the extinguishing chamber into which it enters by passing through the inlet orifices 4.
• the liquid is also guided towards the outlet orifices 6 so that it falls into the recovery tank after an obligatory passage in said chamber 5.
• chamber 5 Since chamber 5 is substantially closed, it contains oxygen, which promotes the extinction of an ignited liquid passing through said chamber 5.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Housings And Mounting Of Transformers (AREA)

Applications Claiming Priority (1)

Publications (1)

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ID=9503418

Family Applications (1)

Country Status (2)

Families Citing this family (2)

Family Cites Families (4)

• 1997
  • 1997-07-23 EP EP97935613A patent/EP1007447A1/de not_active Ceased
  • 1997-07-23 WO PCT/FR1997/001378 patent/WO1999005050A1/fr not_active Ceased

Non-Patent Citations (1)

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