US830248A - Appliance for storage vessels for liquid gases. - Google Patents

Description

P! TENTED SEPT. 4, 1906.

L. VON ORTH. APPLIANGE FOR STORAGE VESSELS FORLIQUID GASES.

APPLIUATION FILED APR.1.1904.

2 SHEETS-SHEET l.

NO- 830,248. PATEN'IED SEPT. 4, 1906.

. L. VON ORIH. APPLIANGE FOR STORAGE VESSELS EUR LIQUID GASES.

APPLICATION' FILED APR. 1. 1904:.V

2 SHEETS-SHEET 2.

Wz'zzesses: a( ./Je vejefaf:

UNITED STATES PATENT OFFICE'.

LUDWIG VON ORTH, OF BERLIN, GERMANY, ASSIGNOR TO DEUTSCHE SCHIFFS FEUERLSCHGIBELLSCHAEI MIT BESCHRNKTER HAF- TUNG. OF BREMEN, GERMANY.

Specification of Letters Patent.

Patented sept. 4, 1906.

Application filed April 1, 1904- Serial lo. 201.135.-` i

To all whom it may concern:

Be it .known that I, LUDWIG voN Olmi, engineer, a citizen of the Kingdom of-Wrtemberg, German residing at No. 9 Ludwigskirclistrasse, Ber in, in the Empire of Germany, have invented certain new and useful Improvements in Appliances for Storage Vessels for Liquid Gases; and I do hereb deelare the follow' to be a fullclear, an exact description o the invention, such as will enable others skilled in the art ,to which it ap ertains to make and use the same.

en withdrawing li uid gases, such' as liquid. carbon dioxid an the like, from/the storage vessels or bottles, the reducing-valve becomes readily frozen, as is well known, and

the discharge-openings become clogged with'- snow. In order to obviate this disadvantage, various simple means 'have been employed, which were all based upon the idea of warming the liquid gas from the outside.

The simplest means employed consists in that canb heated, through. which thecarbon-dioxid conduit is made to pass. 'For the requirements of a moderate discharge of the liquid gas as heretofore effected these means are sufficient. They are, however7 quite insufficient when lar e quantities of the liquid gas are to be disclgiarged very rapidly from the storage vessels-such, for instance, as in the case of extinguishing fires on board ship or the like by means of carbon dioxid. .Wit

such a large consumption of carbon dioxid a heatable water-chamber, such as Ibefore mentioned, would not be of the least use. It would re uire to be of the size of a large steam-bo' er and would then ossibly not be effective. In addition, `suc a heatable chamber between the carbon-dioxid vessel 'and the reducing-valve could not bepractically applied in cases such as above mentioned, as the heating up of the water would require several hours, as in the case of an ordinary steam-boiler, during which time the conlagration would require to have been completely extinguished. On the other ducing-valve would be a source of very great danger, as in the event of the consumption of carbon dioxid being sto ped from any cause a prejudicial increase o the heating action upon the carbon dioxid contained in the receptacle would take place and easily result in an explosion.

The present invention has for its object to prevent the freezing of the liquid gas vin such cases where a rapid consumptiqnbf large quantities 'of carbon dioxid or the like takes place, While at the saine time the arrar ige ment is capable of being'put rapidly into effective o eration and 1s capable of autoimatic regu ation.- This'is attained by the use of a source of heat, as before; but the been proposed consists in that the gas is not .heated in its liquid condition, as heretofore, "but only after its issue in the vaplorized condition. The heating medium is t en brought in contact with the gas in a ine state of subter thereon without any danger of the heat being carried back to the sto e vessel, as only the gaseous articles are eated that have already issued therefrom. An arrangement for c out this method of heating is shown diagrammatically on the accompanying drawings, inwhich- Figure 1 shows a vertical longitudinal section. Fi v2 shows a cross-section, and Fig. 3 shows t e apparatus attached to a' storagechamber.

^ The liquid as issues througha pipe or nozzle a, from tie storage vessel 1. This pipe opens into a second ipe orchamber b, passing through a vesse or casing c. Into the vessel a liquid-heating medium is introduced at d, whence it iiows over the ribs e, projecting from the pipe b in such manner as to flow in a serpentine direction roundthe pipe b and to issue at f. The pipe or nozzle a is closed at its end and has an oblique or spirallyformed passage gl In consequence hereofl the issuing liquid as is directed or. discharged at an an le ireetly against the imwi' Wall of the pipe against which it inipiiigvs under pressure, so as to be dispersed and couverted into va or inconsequence of the clilarged space a orded by the pipe or cliambti division and can Aconsequently act much bet-` main diiierence between this and what has IOO ' b as compared with the opening of the pas- I sage g. The gas thus formed then flows in a helical path downward through the pipe or chamber b under continual expansion. The gaseous current therefore comes in contact Vith the entire inner surface. of the pipe, so that the gaseous particles are continually heated by contact with the pipe. 'lhus a reliable and considerable heating action is obtained, while any backward action upon the storage vessel is prevented by the pipe a. The ribs of pipe b, inelosed in the casing c, not only serve for guiding the current of thel heating medium, but they also serve to transmit directly by their conducting power the heat of the liquid medium to the pipe or -chamber b, which in addition is also heated externally by contact with the medium.

As heating medium water of ordinary temperature is advantageously employed, so that no special source of heat is necessary. The reason why water can be used as an energetic heating medium, although, as is known, it is colder than the liquid carbon dioxid7 is that such heating medium is not required to warm up the liquid: carbon dioXid as heretofore, but'is made to surround the finely-divided vaporizing gases. The production of cold only occurs at the moment of vaporization, and the freezing is produced by the backward conduction of the cold. The fact that in thev arrangement shown by way of example the pipe or nozzle a, reaches to a certain extent into the casing or vessel c has no effect upon the action. It is only done out of practical considerations in order that the pipe or nozzleamay t closely and tightly into the heating device. No heating of the liquid carbon doxid in the pipe or nozzle a will take place, because the carbon dioxid lows too rapidly through the pipe or nozzle a (in about one-hundredth of a second) and because, as already stated, the heating medium Having thus described the nature of my said invention and the best means I know of carrying the saine into practical effect, I claiml \1. In a means for preventing the freezing and formation of snow on the discharge of large lquantities of liquid gas, such as carbon dioxid, from storage vessels, the combination with a vessel containing a' suitable heating medium for the vaporized gas, of a chamber thc-rein, and a nozzle for the liquid gas discharging directly against the wall of the chamber.

2. In a means for preventing the freezing and formation of snow on the discharge :of large quantities of liquid as, such as carbon dioxid, from storage vesses, the combinatie of a discharge-pipe, such as a, having an oblique passage. g, a pipe, such as b, of larger diameter communicating with the discharg pipe and serving as a heating-surface upon which the gas impinges and over which it is made to low in a helical ath While being expanded and vaporized, ri s, such as e, formedon the pipe I), and a casing, such as c, surrounding the pipe b and the ribs, and through which a' liquid heating medium is made to flow so as to pass in a serpentine direction round thepipes a and l); the ribs e serving at the same time to conduct the heat of the medium directly to the said pipes, substantially as described.

3. The combination of a discharge-pipe a for li uid gas, having an oblique passage g, a pipe 1 into which pipe a fits, having ribs e, and a closed casing c surrounding pipe b and through which a heating fluid is made to low,

substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses. I LUDWIG VON ORTH.

Witnesses:

HENRY HASPER, WoLnEMAn HAUPT.

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