US1698645A - Automatic acetylene generator - Google Patents

Description

Jan. 8, 1929. A 1,698,645

E. MENZ AUTOMATIC ACETYLENE GENERATOR Filed Dec. 18, 1926 Patented Jan, 8, l.

EMIL" MENZ, OF 'BERLIN-FRIEDEIWAU,

AUTOMATIC AonrYLnnE- enivnunroa.

Application filed December 18, 1926; Serial N0.'155,7 12, and in Germany Novemberiw, 1925. a

This invention relates to an automatic acetlene as enerator otthe water-to carbide.

type and of the kind composed of two communicating water tanks in one of whlch a gas bell isarranged to float while the other con tains a gas generating chamber, a gas dellvery' pipe which leads from the generating chain er to the gas spaceunder the bell andwhich risesvertically through the latter, being pro vided with a valve which is controlled by the bell and which, when closed thereby causes the gas to flow through a by-pass into the bell under increased pressure. In a known device of this type the normal delivery pipe is provided with a stop cock arranged outside the bell and operated by a device on the latter, and the by-pass is formed by an auxiliary delivery pipe arranged separately from the normal one, the gas being in each instance delivered into the water space through caps arranged over and concentrically with the pipes.

The object of the present inventionis to simplify the arrangement and provide a more 7 sensitive valve arrangement which only requires a very slight movement of the bell for its operation, and the invention consists essentially in theprovision of a vertically movable valve elementarranged inside the bell and adapted to cooperate with the nozzle of the delivery pipe and keep the latter normally closed, said valve being normally disconnected from the bell, means being provided whereby the bell, at a given point of elevation, acts on the valve for opening and reclosing the same. This arrangement ensures the opening and reclosing of the valve by a movement of the bell through the extent of a few millimeters and removes a defect which is quite common in the automatic acetylene generators at present in use, viz, that of inertness, the gas generation being slow to start as well as to cease so that oxygen is wasted at the commencement of an operation while a dangerous escape of acetylene gas occurs after the operation.

As the pipe opens direct into the gas space, the by-pass can be arranged concentrically with the same pipe, apertures being provided in the latter through which the gas enters the by-pass when the valve is closed. In this manner a very simple arrangement is obtained.

The invention is illustrated in the accomfloating bell 7) which rises andtallswith the gas pressure. The tank 'c containsa gas gen- Gl'tttlOXlCllZtIl'lbQTlll the 'form ofavesseliz' whichfis inverted over the carbide cage g andwhich communicates through pipes h-and' with the gas 'ClGll'VB'IY pipe The water tends to rise through the chamber 2' into contact with the carbide, the-pressure of the gen- 1 erated gas keeping it back more or less according to the gas consumption. From the hell 6, the as is led through a pipe r or to the purifier and thence through the chamber 6 to the place of consumption.

According to the invention, a valve V is provided for closing the delivery pipe is, and this valve is controlled by the hell 6 which closes the valve on rising and opens the same on descending. When the pipe is thus closed owing to interrupted gas-consumption, the gas is led through a by-pass 8 into the water space under the bell b where it has to suppress a water column'of the depth S. The resistance of this Water column increases the pressure in the chamber 9 and causes i the water to recede rapidly from the carbide so as to stop the gas generation. As soon as the valve V is reopened by the bell Z2 owing to renewed gas consumption, theopressure will be relieved, and the water will rapidly reascend into contact with the carbide so as to restart the gas generation.

The pipe is rises vertically through the bell from a counter-pressure chamber finto which the pipe 12 is led. The by-pass s is concentric with the pipe and communicates with the latter at its upper end at B,'the lower endopening into the water space at the distance S from the water head. The valve V has its seat on the upper end of the pipe 74 and is carried by a sleeve 0 arranged concentrically with the pipes is and 8, air vents being provided' at the upper end of the sleeve. The latter, which closes the valve by gravity, is nor 'mally supported on a double-armed lever H which cooperates with a ring R carried by the hell I). As the bell descends, the ring R engages and rocks the lever so as to raise the sleeve C and open the valve; As the bell rises the ring is lifted off the lever so that the sleeve is allowed to sink and close the pipe 70.

The rapid fluctuations of the Water surface in the gas generation chamber 9 has the further advantage that the residual lime Will be effectively washed away from the carbide so that on the one hand the Water Will have immediate access to the carbide and so that on the other hand there Will be no belated generation of gas by Water-retaining deposits.

I claim: v 1. In an automatlc acetylene gas generator of the character described, the combination with a gas bell and With a gas delivery pipe Which rises vertically through the bell and opens direct into the gas space of the latter, of

a vertically movable valve element arranged in the gas space of the bell and adapted to cooperate with the nozzle of the pipe and'keep it normally closed, said valve being normally disconnected from the bell, and controlling means cooperating with the bell and enabling the latter, at a given point of elevation, to act on said valve for opening and reclosing the same a I 2. 'A device as claimed in claim 1 wherein the controlling means comprise a ring carried by the vgas bell, a sleeve carrying the valve element and arranged concentrically with the gas delivery p'ipe,and a double-armed lever pivoted to saidpipe so as to support the sleeve With one arm and bear against said ring With the other arm.

3. The structure claimed in claim 1 in combination With a sleeve arranged concentrically With the gas delivery pipe and forming a tight closure With the upper end thereof, the delivery pipe being formed With lateral apertures through which it communicates With said sleeve'so as to feed the gas through the latter when the upper end of the pipe is closed.

EMIL MENZ.

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