SK501042014U1 - Composite bottle for transportation and storage of espacially LPG and device for its production - Google Patents

Abstract

In particular, a composite bottle for transporting and storing LPG is described, consisting of a lining (1) of a thermoplastic interior provided with a metal neck (2), wherein a layer (3) is applied to the inner side of the bottle at the neck of the bottle (2) ) a sealant. Further described is a device for producing a composite bottle.

Description

Composite bottle for transport and storage, especially LPG and equipment for its production

Technical field

The technical solution relates to a refillable composite bottle for transport and storage, in particular of LPG, consisting of several layers, mostly plastics or possibly non-ferrous metals, into which a metal neck for inserting the valve is inserted.

BACKGROUND OF THE INVENTION

For the transportation and storage of LPG in particular, classic iron bottles are mostly used. In the 1990s, work began on the development of a new generation plastic transport bottle, characterized by low weight, transparency and especially unlimited service life. For example, a container for storing liquefied and compressed liquids according to the patent CZ 300037. However, some of these LPG bottles, in particular, often leaked after several applications and the gas phase began to escape. Currently, there are faulty bottles with this problem in the Czech Republic's gas companies of the order of 50,000 and in European countries at least another 400,000 such bottles with the same error are stored. A probable place where leakage may be a problem is the transfer of the inner liner, also called liner, from the thermoplastic to the metal throat. It has been found that the rubber function between the liner and the metal neck is supposed to fulfill the sealing function in all bottles, but this apparently ceases to perform this function over time for some reason. No one has been able to fix this leak so far, so these faulty bottles are only stored and awaiting physical disposal. In the better case, it will be the dismantling of individual layers, some of which are recyclable, but the greater part can end up as an ecological burden in landfills. In the worst case, the iron throat will be removed and subsequently crushed and disposed of in incinerators. However, the two processes described are absolutely inefficient in economic terms. The purchase value of one such new bottle is about $ 50; in addition, companies will also have to pay for environmental disposal in accordance with the Waste Act.

-2The essence of the technical solution

The above-mentioned deficiencies are largely eliminated by a composite bottle for transport and storage, in particular of LPG, consisting of a liner - thermoplastic liner, equipped with a metal neck, according to this technical solution. Its essence is that a sealant layer is applied to the inner side of the bottle at the joint of the liner to the neck.

Another principle of the technical solution is a device for repairing these bottles. Its essence is that it consists of a holder for attaching a bottle, from the neck of which the valve has been removed, and from a nozzle for applying a layer of sealant to the place of the liner-neck connection.

The nozzle is preferably multifunctional, in which, in one function, air is flowing into the bottle to be repaired, and, with the other function, the sealant is injected into the flowing air.

The holder and nozzle are preferably placed in a fluid container.

The advantage of the bottle repaired according to this technical solution is the low cost of the treatment and its subsequent return to use.

The developed device for repairing such defective bottles is simple, operated by one person who performs the entire repair in 6 operations within 10 minutes, depending on which bottle attachment is used. It is possible to use a mechanical mount, but also a pneumatic one, where only air is filled into the air bag and the bottle is fixed.

The suggested adjustment will require a maximum of $ 10. Taken together, it is clear that the salvaged values will be in the tens of millions.

-3Overview of drawings

An exemplary composite bottle for transporting and storing, in particular, LPG will be described in more detail in a specific exemplary embodiment by means of the accompanying drawings, in which: FIG. 1 shows an exemplary bottle in cross-section and FIG. 2 is a plan view showing a detail of the liner-throat joint. In FIG. 3 is a drawing of a nozzle.

Example of technical solution

An exemplary composite bottle for transporting and storing, in particular, LPG consists of a thermoplastic liner 1 provided with a metal neck 2. At the connection of the liner 1 to the neck 2, a sealant layer 3 is applied on the inside of the bottle. The content of layer 3, i. the groove in which the sealant is placed is 2 ml.

We proceeded to select a substance suitable for sealing. After consulting a chemist, we chose three commonly used colors ETERNAL, CHLOROCRUM and PENETRAL for the first experiments. During the tests it was found that Eternal dried in 24 hours, Chlorkaukuk in three days and Penetral did not dry even in a week, so he was excluded from the next attempt. Then, a few ml of PB was soaked in an Eternal and Chlorocarbon rubber bottle, the bottle was stoppered and left on a 5-page sealed area for 14 days. After a week, the plastic cap was carefully drilled and the pressure was released. Subsequently, it was found that the color Chlorkaukuk from the bottle cracked, so it was also excluded from further experiments. So the experiment continued only with Eternal. After cutting the bottle, Eternal held firmly on the walls, but when scratched with a knife, he showed no signs of bottle etching. Eternal was therefore chosen for further practical tests - its only drawback for this use is only a 24 hour drying time.

The basic device for repairing the composite bottle consists of a bottle mounting bracket from the neck of which the valve 2 and nozzles 16 have been removed to apply the dispersion paint layer 3 at the junction of the liner to the neck 2. The nozzle 16 is multifunctional; the second is injected with sealant. The apparatus further comprises a stand 11 on which it is

A placed holder for holding the hand pump 12 for introducing the sealing layer 3 and the frame 13 of the device itself. Further parts are a holder 14 on which a liquid container 15 is placed, in which a multipurpose nozzle 16 is inserted. At the top of the frame there are stabilizing tabs for limiting the lateral movement of the bottle and a pressing device and a pressing device 16th

The entire bottle repair with this device consists of six working procedures. The bottle from which the valve has been removed is first fitted to the nozzle 16 and fixed to the frame 13. The container 15 is filled with liquid, preferably water, and the bottle is pressurized with air to 6 bar by means of the multipurpose nozzle 16. When an air leak is detected, sealant is injected into the air stream through the multi-purpose nozzle 16 by hand pump 12. After the leak has stopped, liquid is drained from the container, the pressure in the bottle is released, and air is allowed to flow for several minutes to allow the sealant to dry more quickly. Finally, the bottle is removed and left to stand for 24 hours with the valve opening facing downwards.

In another example, a modified syringe is used as nozzle 16 to flood the presumed leak with the sealant. A valve is then installed and the bottle is pressurized with air to 6 bar. After two days, bottles filled with Propane were placed on the test area and checked daily.

After a month, the whole trial was evaluated as effective, as it proved the correctness of thinking about the place of leak and the possibility of its sealing.

Industrial relevance

Composite cylinders for the transport and storage of LPG, in particular, are now commonly used in many sectors of human activity - they are being phased out due to leakage. This technical solution will ensure the possibility of their repair and thus not only their higher reliability, but also the extension of their service life. It is also envisaged that this repair concept, i. sealing of hollow pressure spaces, it will find application also in other industrial activity.

Claims (5)

A composite bottle for transporting and storing, in particular, LPG, consisting of a lining (1) of a thermoplastic interior equipped with a metal neck (2), characterized in that at the junction of the lining (1) with the neck (2) applied sealant layer (3). The composite bottle manufacturing apparatus according to claim 1, characterized in that it comprises a bottle mounting bracket from which the valve (2) has been removed and a nozzle (16) for applying a sealant layer (3) to the lining joint (3). 1) with neck (2). Apparatus according to claim 2, characterized in that the nozzle (16) is multifunctional, wherein one path is for air flowing into the bottle to be repaired and the other path is for injecting sealant into the flowing air. Device according to claim 2 or 3, characterized in that the holder and the nozzle (16) are arranged in the fluid container (15). Device according to any one of the preceding claims, characterized in that at the upper part of the frame there are stabilizing clips for defining the lateral movement of the bottle and a thrust device to ensure vertical pressing against the sealing ring of the two-way nozzle (16). ίίν · η> ΐΰ <ι-ty