Патент USA US2127880код для вставки
Aug. 23, 1938. c. A. MEDSKER 2,127,380 APPARATUS FOR THE PRODUCTION OF coMBUsTIBLE GAS Filed March 28, 1954 2 Sheets-Sheet 1 ATTORNEYJ,’ Aug. 23, 1938. c. A. MEDSKER 2,127,330 APPARATUS FOR THE PRODUCTION OF COMBUSTIBLE GAS Filed March 28, 1954 2 Sheets-Sheet 2 ATTORNEY‘); Patented Aug. 23, 1938 '~ 2,127,880 UNITED STATES PATENT OFFICE 2,127,880 APPARATUS FOR THE PRODUCTION COMBUSTIBLE GAS Charles A. Medsker, Cleveland Heights, Ohio, ‘ assignor to The Ferrolene Oxygen Co. of Ohio, Cleveland, Ohio, a corporation of Ohio Application March 28, 1934, Serial No. 211,871 3 ‘Claims. ((21. 48-93)‘ vThe presentinvention relating as indicated to e a method of and apparatus for producing gase ' ous mixtures,.is more particularly directed to a new and improved- method and apparatus for 5 the production of a mixture consisting of a true gas, and a vapor produced by the evaporation duce a ?nal mixture ‘of the same content. Fur ther di?lculties are experienced in maintaining constant temperatures in the conduits to prevent unequal condensation. at ‘different points._ , In the present method and apparatus, I have devised a system for producing a constant mix - of a‘ liquid fueli-to’produce ajcombustible gas ture of the type described which is relatively capable of burning at a high temperature for stable and in which the content can be con’ ‘ use in the welding and cutting of metal. A fur~ ‘ trolled and proportioned accurately regardless of ~ _10 ther object of the‘ invention is the provision of rate of production and use. apparatus for continuously producing a combus In Fig. 1, I have shown one apparatus em bodying my improved invention which consists of a mixing tank I provided with a mixing tube tible mixture ’of the character described of ?xed composition regardless ofthe volume‘ in which the mixture‘ isproduced and drawn on.‘ .To' the accomplishment of the foregoing and related ends, the invention, then, comprises the 2 therein, through which the‘ mixture may be forth in detail certain illustrative embodiments drawn and discharged into the conduit 3 which is provided with a control valve land may be connected to any suitable torch or burner. The basic gas which forms the major portion of the mixture isintroduced into the chamber I through a conduit 5 and how throughthis conduit is con of the invention,-t_hese being indicative, however, trolled by means'of a manual valve 6, and an au of but a few of‘the various ways in which the tomatically controlled valve ‘I. The conduit is also supplied with gauges 9 and ill to allow the operator to determine the pressures which exist and, make adjustments to secure the desired con trol. The enriching liquid is contained in a tank i5 provided with a gauge glass It and is carried through a conduit l'l provided with a strainer l8 features hereinafterwfully described, and partic ularly pointed out in the claims, the following description and the annexed drawings setting principle of the invention may be employed. In said annexed drawings:-~ ' Fig. 1 is a side elevation partially in section and more ‘or less diagrammatic in character of one form of my improved apparatus, and Fig. 2 is a similar view-v showing a modi?cation of the same. , It has been found that any combustible gas, such as ordinary natural or arti?cial heating gas, can be enriched by the addition of vapors of liquid fuels thereto, such for example as vapors of liquid hydrocarbons, to produce a combustible mixture having a combustion temperature adapt ing it for the welding and cutting of metal, and gases of this character are now‘ in general use, resulting .in large savings in cost over the or dinary commercial welding and cutting gases such for example as acetylene and the like. It is a simple matter to enrich the ordinary arti 10 and a pressure gauge II and controlled by an au tomatic valve l9, presently to be. described, into 30 the chamber I and discharged into a shallow cup or pan 20 and there vaporized by means of heat supplied below the cup through an elec trical heating unit 2| mounted in an enclosing casing 22 ?xed to the end or head 23 of the chamber I. The gas-introduced through~;ithe con duit 5 is led through the chamber l‘and ‘dis charged upwardly through the end 3|! of said conduit, and thereby caused to flow around and over the cup 20 in which the enriching liquid is continuously vaporized by means of the heat " ?cial or natural heating gas by the ‘addition applied thereto from the heating coil. The result is that the gas issuing from the conduit 30 car ries up the vaporized liquid, mixes with the same, gas is fairly constant, and also so long as the and ?lls the interior of the chamberv I from mixture so‘ produced is used relatively close to the ,sawhichhthis mixture is then drawn off through the _ point of production. It has been found,.how-~ passage 2, which in order to secure better mix ever, that in installing a system of this type in ing by the gas and vapors may be ?lled with a ‘factory and-providing outlets at'points spaced brass shavings or similar material. Air may be 50 a considerable distance from each other, it'is introduced into the gas entering at conduit 5 I or may be subsequently supplied "and mixed with very di?icult to prevent condensation of the va ‘porized liquid in the conduits extending from the mixture in or at the burner which is not the source of production to the point of use, shown. audit is also di?icult to regulate accurately the In operation, the pressure existing in the dis charge line 3 is caused to operate a pressure- 55 55 amount of liquid introduced into the gas to pro thereto of a predetermined amount of an atom ized‘liquid-so long as the rate of production of the 2 2,127,880 controlled electrical switch which is 01' standard construction and is indicated diagrammatically at 40. Excess pressure in the conduit 3 operates a diaphragm which will close the circuit, causing current to flow through wires 4| to actuate a solenoid 42 which is connected to the valve ‘1 the pressurestat or thermostat ‘II. A conduit 12 is connected to the vapor side 01' the heating chamber 61 and leads to the line regulator valve 13 and thence through the conduit 14 and orifice 15 to the mixing chamber ‘I6. A conduit 11 also connects the vapor sides of the chambers 60 and 62 to the upper portion of the heating chamber 61. The arti?cial or natural gas is conducted into the apparatus by means of the conduit 18, in the gas inlet line 5. An excess of pressure over that for which the device 40 is set will close the valve 1, reducing the flow of gas into the 10 chamber I and thereby reducing the pressure in through the line regulator 19 and thence to the 10 that chamber and consequently in the discharge mixing chamber ‘I6. conduit 3. In this way, substantially constant pressure can be maintained in the discharge con duit and hence at the burner or tip. Operation of the switch contained in the con ducted from the mixing chamber 18 out through the conduit 80 to a burner or torch (not shown). In operation, the above described form of appa ratus first vaporizes the liquid by means of the heating unit 69 and incidentally creates a vapor pressure, due to the fact that the entire system trol device 40, by means of wires 43 and the sole noid 44, also operates a second electrically con trolled valve IS in the liquid line. This valve is similar in construction and operation to that 20 shown in section in the conduit 5, and thus the flow of both gas and liquid is simultaneously and accurately controlled and proportioned to the pressure which it is desired to maintain in the discharge line 3. In order that the liquid will ?ow into the mix 25 ing chamber I, it is of course necessary that the pressure in the conduit I‘! be slightly greater than the pressure in the interior of the chamber 1. The pressure in the interior of the chamber 30 i is in turn dependent upon the inlet gas pres is atmospherically sealed, against the line regu lator valve 13. The pressure limit of the line regulator valve 13 and also of the gas line regu 20 lator valve 19 is set at a predetermined value, and therefore both the vaporized liquid fuel and the gas will be supplied to the mixing chamber at constant pressures, and correspondingly at constant velocities. Therefore, the proportions of the constituents of the resultant mixture will remain constant regardless of any ?uctuation in the rate of flow or pressure in the burner con necting conduit 80. It is also desirable to maintain a substantially 30 constant temperature in the chamber I, and I employ a thermostat 50 mounted in this chamber and adapted to actuate a mercury switch 5| which in turn controls the circuit extending to the sure from the conduit 5. Therefore, in order to maintain such a slight excess of pressure in the liquid feed line H, the following apparatus is provided. A connecting conduit 45 leads from 35 the upper or vapor side of the liquid chamber I5 to the line pressure regulator 46, the detailed construction of which is well-known in the art. heater II in the tank, and closing or opening the ' circuit, depending upon the temperature for which the thermostat is set. Other forms may be employed embodying the Suffice it to say that the regulator 46 serves as a means for equalizing, up to a predetermined features of my invention instead of the one here limit, the pressure in the conduit 45 to that in the interior of chamber i, and accordingly, the pressure on the vapor side of the liquid chamber IS. The liquid chamber I5 is positioned at a higher level than that of the mixing chamber l and accordingly there will result a hydrostatic pressure su?icient to force the liquid through the conduit l1 and into the mixing chamber I. In the form of construction shown in Fig. 2, in explained, change being made as regards the means and the steps herein disclosed, provided - the elements stated by any of the following claims or the equivalent of such stated elements be em ployed, whether produced by my preferred method or by others embodying steps equivalent to those stated in the following claims. I therefore particularly point out and distinctly claim as my invention:— it is contemplated that the enriching liquid will be first vaporized before its admixture with the 1. In apparatus of the character described, the combination of a mixing chamber, a conduit for 50 gas. The form of construction shown in Fig. 2 and now to be described is less expensive than introducing an enriching hydrocarbon liquid thereinto, a control valve in said conduit, means in said chamber for vaporizing said liquid, a sec ond conduit for passing a stream of combustible gas into said chamber, a control valve in said 55 second conduit, means for removing the mixture that shown in Fig. l, in that the large mixing chamber i and the solenoid valves ‘I and I! are eliminated. " The mixed gases are con I Now referring more particularly‘ to Fig.2, the enriching liquid is contained in ‘a chamber 60. A sight glass Si is provided on the chamber 60 to enable a visual inspection of the quantity of 60 liquid contained therein. A second chamber 62 of gas and vaporized liquid from said chamber, and a master control simultaneously regulating both of said control valves and thus regulating the flow of said liquid and said gas into said serves as a main supply chamber. The upper or vapor sides of the chambers 60 and B2 are chamber, said master control regulating said flow of gas and said flow of liquid in direct pro portion to the rate of removal of said mixture connected by means of the conduit 63. The lower or liquid side of the chamber 62 and the 65 vapor side of the chamber 60 are connected by means of the conduit 64'. A ?oat 65, in the chamber 60 actuates the needle valve 66 in the introducing an enriching hydrocarbon liquid lower end of the conduit 64 and serves as a means thereinto, a control valve in said conduit, means for maintaining a constant liquid level in the 70 chamber 60. The liquid from the chamber 60 communicates with the heating chamber 61 by means of the connecting conduit 68. An electric heating unit 59 is positioned on the interior of the heating chamber 61 and is energized by 76 means of the connecting wires 10 which lead to for heating the said liquid to a vaporizing tem perature, means including a conduit for passing therefrom. 2. In apparatus of the character described, the combination of a mixing chamber, a conduit for a stream of combustible gas over such liquid, a , control valve in said second conduit, means for removing the mixture of gas and vaporized liquid from said chamber, and a master. control simul taneously regulating both of said control valves 15 2,127,880 3 combination of a mixing chamber, a conduit for for passing a stream of combustible gas over the heated liquid in‘said chamber, a control valve in said second conduit, means for removing the mixture of gas and vaporized liquid from said chamber, and a master control simultaneously regulating both of said control valves and thus regulating the rate of ?ow of said liquid and of introducing an enriching hydrocarbon liquid said gas'into said chamber, said master control and thus regulating the rate of flow of said liquid and of said gas into said chamber, said master control regulating said ?ow of gas and said ?ow of liquid in direct proportion to the rate of re moval of said mixture therefrom. 3. In apparatus of the character described, the thereinto, a control valve in said conduit, means 10 for heating said liquid in said chamber at a rate proportioned to the rate of withdrawal of gas from. said chamber, means including a conduit regulating said ?ow of gas and said ?ow of liquid in direct proportion to the rate of removal of 10 said mixture therefrom. CHARLES A. MEDSKER.