FR2521534A1 - RESERVOIR FOR BULK COAL - Google Patents

Abstract

IT CONSISTS OF A SILO IN A FLEXIBLE MATERIAL, IMPERMEABLE TO AIR, EQUIPPED WITH AN OUTLET OPENING AND SUSPENDED IN A SUPPORT FRAME; A PERMEABLE PARTITION WITH GASEOUS BODIES BUT IMPERMEABLE TO DUST PARTICLES IS PROVIDED INSIDE THE SILO AT A CERTAIN DISTANCE BELOW THE SILO COVER; A PNEUMATIC SUPPLY DUCT INTO THE SILO SPACE LOCATED UNDER THIS PARTITION PERMEABLE TO GAS; THE SILO COVER IS EQUIPPED WITH A VENT.

Description

A 2521534

  The present invention relates to a tank for loose coal, such as fine coal, granulated coal, powder

  of coal or the like, intended to act as a device for

  serve in a closed room with, on the one hand, a supply line and, on the other hand, in the bottom of an outlet opening. We know that due to the gradual depletion of reserves

  natural liquid or gaseous fuels intended for heating

  fage and the incessant rise in their price, is envisaged more and more the return to solid fossil fuels for the supply of small or medium heating installations, intended for heating for example dwellings, buildings

  to apartments, administration buildings, halls or hal-

  , etc. However, an essential condition for this return to combusti-

  solid is that their contribution and their implementation are

  largely automated, as required by the consumer for

  liquid or gaseous fuel Now, the technical problem concerning the transport of these fuels is largely solved at the present time, in any case as far as it concerns small charcoal, granulated charcoal or coal powder, of which transport is carried out using hopper vehicles, the unloading of which as well as the storage of fuel at the consumer's place,

is carried out pneumatically.

  The present invention relates to the storage of coal

  for the consumer Needless to point out that a condition is

  Another requirement, which must be satisfied by any installation of the kind concerned, is that of a competitive price and of investment costs as low as possible.

  is that the solid fuel must, just like the ma-

  August, can be stored inside the building concerned, which requires that a tank be provided for this purpose

  likely to be installed at reasonable installation costs

in an existing closed room.

  It is this problem that the present invention proposes to solve.

grind.

  The solution recommended by the invention in the light of its

  fundamental principle is that said tank of char-

  loi- 2521534 bon is designed in the form of a silo, made of a flexible and airtight material and suspended in a support frame, in that it is provided inside the tank and a certain distance below the cover a partition of a material permeable to gaseous bodies, but dustproof and in that the pipe

  supply enters the space under this per-

  gas mable and that the cover of the assembly has a vent.

  In the case of silos made of flexible materials, such as textiles, lined with a layer impermeable to

  air, this is a known system, which so far has

  used for other purposes, such as storing food, such as storing flour in

  bakeries The filling of these silos made of a tex-

  tile by means of a pneumatic conveyor is also

  However, the use of silos of this kind for the storage of com-

  solid bustibles has not yet been considered so far.

  Besides, this is an application to which they are not suitable.

  In fact, fuels of this kind, such as char-

  good granulate or coal powder, always contain volatile components with great danger of explosion when

  are stored in a closed tank.

  This is the reason why the flexible silo according to the invention

  tion is provided with a vent serving not only as an outlet opening for the gaseous bodies released by the stored mass, but also as a ventilation opening for the penetration of air in

  view of the incessant dilution of volatile bodies which accumulates

  slow in the silo It is easily understood that the filling of a silo of this kind cannot be carried out in the traditional way, for example by means of a transport system operating under

  pressure due to the high production of used dust-

  born by systems of this kind It is to avoid this inconvenience

  nieat that the flexible silo according to the invention is, to a certain

  distance below the cover, fitted with a partition under which

  the supply line leads to this partition, which for

  so to speak acts as a filter, lets the volatile bodies pass

  them, but opposes the passage of transported or raised dust

  vée, which, stopped by the band, falls back into the silo and is

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  dragged with granulated or powdered coal to the chamber

combustion.

  Another advantage of the system according to the invention is also due to the flexibility of the silo. In fact, when the

  -5 silo by a transport system by backflow or by vacuum-

  tion, its walls and above all the said partition under the cover

  circle adapt to a certain extent to the increase or decrease in pressure, that is to say, deform, which means, especially for said partition, that the adherent dust particles are detached therefrom by following the movement,

  so as to avoid the risk of obstruction.

  Finally, a last great advantage of the flexible silo system according to the invention consists in that the complete device can be easily introduced into the space provided for its mounting even by narrow passages, and this by handling as little as possible and without major assembly work The silos according to the invention can therefore be easily introduced into existing fuel oil storage spaces, the access points of which

  are generally very narrow, for mounting thereafter.

  According to a preferred embodiment of the system according to the invention, the supply line passes approximately through the center of the silo cover and through said gas-permeable partition, which are both attached thereto. advantage that said partition is, when filling the silo, uniformly deformed and therefore effectively cleaned under the effect of the pressure difference existing between the interior

  from the silo below the partition and I filled with gas

  above the latter The supply line is used at the same time to keep the partition at a certain distance from the silo cover, sufficient to form between the partition and the cover

  sufficient space for the accumulation of volatile bodies released

  fueled by the fuel stored in the silo.

  In the center of the silo cover is preferably mounted

  gas-tight a dome, made of a rigid material, au-

  which are fixed the supply pipe and the ventilation pipe This dome, which carries the supply pipe or a part of it, as well as the ventilation pipe, may, during the

to 2521534

  mounting of the silo in the space concerned, being easily mounted thereafter, for example thanks to the fact that the cover of the silo has an opening on the edge of which the dome can

  be fixed with a clamp.

  The characteristics and advantages of the system according to the invention

  tion will emerge more clearly from the detailed description

  following of an example of implementation, given with reference to the appended drawing, where the single figure represents a silo according to

  the invention in partial axial section.

  The silo 1 consists of a cylindrical part 2 and a frustoconical bottom 3 with outlet opening 4, as well as a cover arranged on its cylindrical part. It is made of a flexible material, impermeable to air, such as a lined textile material

  a waterproof layer and sewn together in the form of a reci-

  pient cylindrical flexible, strangled below at the bottom 3 by seams and / or ribbons sewn on the device thus formed is then mounted the cover 5 All these parts

  of which the silo is composed can be joined by sewing, sealing

  ge or any other suitable process In the silo is mounted at a certain distance under the cover 5 a partition 6, made of a

  sort of filter cloth and attached by sewing to the walls of the silo.

  This filter cloth consists of a cross-linked material with very narrow meshes, allowing the gaseous, volatile bodies to pass, but stopping the dust particles. At the top, at the outer edge of the silo 1 are sewn loops 7, made for example from the

  same material as the silo walls and used for the passage of pro-

  spun from a support frame 8, by means of which the silo is suspended

  or is supported by a chassis At the connection between the

  cylindrical part 2 and the frustoconical bottom 3 of the silo are equally

  ment provided loops 9 for the passage of the profiles of a frame 10 for tensioning the silo in the connection area between the cylindrical part 2 and the frustoconical bottom 3 to ensure a

  flawless flow of granulated charcoal or charcoal powder

good towards the exit opening 4.

  The cover 5 of the silo 1 has in its center an opening

  11, in which a rigid dome 12 is mounted, around the

  which is tight in an airtight manner the edge of said ou-

  verture It by means of a clamp 13 This dome can

  be made of a suitable metallic or plastic material.

  It contains a tube 14 intended for the connection of a non-drawn-out ventilation and deaeration pipe and putting this pipe in communication with the chamber delimited, on the one hand, by the cover S and, on the other hand, by said partition permeable to gas 6 In addition, through this dome passes in an airtight manner a supply line 15, forming part for example of a pneumatic supply device The part 16 bent downwards of said supply line 15 crosses the partition

  6 and opens into the silo chamber located under the latter.

  This part 16 of the supply line 15 is fixed to the

partition 6 by means of a flange 17.

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Claims (5)

CLAIMS.   1. Tank for bulk coal, such as coal   pellet, coal powder or similar fuel, des-   designed to act as a reserve device in a closed room and provided on the one hand with a pneumatic supply pipe and, on the other hand, with an outlet opening in the bottom, characterized   in that it is designed as a silo made of a material   ple, airtight and suspended in a support frame, in which the interior of the silo is arranged, at a certain distance   under the silo cover, a partition made of a per-   gutable to gaseous bodies, but impermeable to dust particles   and in that said supply line enters the silo chamber located under this partition permeable to the bodies   gas and the cover has a vent.   2. Tank according to claim 1, characterized in that said supply line passes through the cover of the silo approximately in its center, as well as through said gas-permeable partition, this cover and this partition being fixed to this supply pipe. . 3. Tank according to claim 1 or 2, characterized in that in the center of the silo cover is mounted, in a gas-tight manner, a dome of a rigid material, to which said said are fixed.   supply line and deaeration line.   4. Tank according to either of claims 1 to   3, characterized in that said silo cover is fixed while   around the dome by means of a clamp.   5. Tank for bulk coal, substantially such   as described above and illustrated in the accompanying drawing.