US550831A - John raskins ladd - Google Patents

Description

(No Model.)

' J.H.LADD,.

. STEAMGENERATOR. Patented Dec. 3, 1895.

. Q a a a 5&2 Jffadal, 3y

NITED STATES PATE T OFFICE.

JOHN HASKINS LADD, OF LONDON, ENGLAND.

STEAM -G EN ERATO R.

SPECIFICATION forming part of Letters Patent No. 550,831, dated December 3, 1895.

Application filed August 15, 1895.

T0 at whom it may concern.-

Be it known that I, JOHN I-IAsKINs LADD, engineer, a citizen of the United States of America, residing at London, England, have invented new and useful Improvements in Steam-Generators, of which the following is a specification. r

My invention relates to steam-generators, and is designed to provide in a more eflicient and economical manner than heretofore for the generation of steam by the burning of gaseous fuel in direct contact with the water.

In the specifications of former Letters Patent of the United States granted to J. H. IV. Stringfellow, Nos. 457,484, of 1891, and 467,266, of 1892, and in the specification of my application for Letters Patent of the United States filed July 13, 1895, there is described the manufacture of an improved gas, which is produced by charging atmospheric air first with hydrocarbon vapor and then with vapor of water. Now I have found that such gas can be very advantageously used for generating steam by introducing it under pressure into a closed vessel and burning it in direct contact with and under the water. therein.

My said invention, therefore, comprises an improved method of generating steam by means of gas burned in direct contact with the water, consisting in first charging atmospheric air successively with hydrocarbon vapor and vapor of water, as described in the said former specifications, and then forcing the gas thus produced, under a suitable pressure, through a chamber located in the water to be converted into steam and previously heated to a high temperature by means of such gas, in which chamber it becomes ignited, and discharging the gas so ignited into the water, the production and utilization of the gas in this manner being carried on simultaneously, as hereinafter described.

My said invention also comprises a steamgenerator havin in the water-space thereof a chamber lined with refractory material, a pipe connected with such chamber for the supply of gas thereto, a pipe or tube extending from said chamber to the exterior of the generator for the purpose of permitting the ignition of the gas in the chamber, and a perforated distributing-pipe or multiple j et-burner also connected with the said chamber and Serial No. 559,416. (No model.)

7 whereby the ignited gas is diffused throughout the body of water, suitable controlling valves or cocks being provided for governing the flow of gas through the said pipes, respectively.

In the accompanying drawings, Figure 1 is a longitudinal central section; Fig. 2, a transverse section on the line 00 on, Fig. 1; and Fig. 3, an under side view illustrating one form of my improved steam boiler or generator.

In the water-space of the generatorAis arranged a chamber B, lined with ganister or other suitable refractory material. This chamberB is connected with a supply-pipeO for the gas, witha tube D for permitting the ignition of the gas, and with a perforated pipe E, whereby the ignited gas is diffused throughout the water in the boiler. The supply-pipe C is provided with a controlling valve or cock 0 and with a check-valve or back pressure valve F, and a suitable device, such as a bundle of rods placed side by side, is arranged at G to prevent flashing back of the gas into the supply-pipe O. The tube D extends to the exterior of the boiler and is pro vided with a controlling valve or cook D.

The pipe E is also provided with a controlling valve or cook E, the operating rod or spindle E of which extends through a stuffing-box E. An arm or lever a on the said rod or spindle E is connected by a link I) to the operating arm or lever c of the valve or cock 1), so that the two cocks D E can be simultaneously operated. The said cocks are moreover so constructed that when one ofthe same is open the other will be closed, and vice versa. When the cock C on the supply-pipe C is opened and the interior valve E is closed and the exterior valve D opened, the gas can be ignited at the latter and will flash back into the chamber 13 and burn therein. \Vhen the said chamber is sufficiently heated, the said valves D E are turned so as to close the ignition-aperture and open the passage to the distribution-pipe E. The ignited gas will then be projected through the perforations in the said pipe into the water.

The products of combustion in my improved generator mingle with the steam and when used therewith for driving the engine or 1110- tor serve to maintain the heat of the steam on its way to the engine and in the cylinders.

A much larger proportion of the heat generated is therefore utilized than is the case where the products of combustion are allowed to escape into the atmosphere.

The pressure which I use for forcing the gas into the boiler may be that which is employed for forcing the air through the gasgenerator described in the said former spcci fications, the apparatus described in those specifications being connected by a pipe directly with the pipe or burner through which the gas is introduced into the water-space of the boiler. I prefer, however, to draw the air through the apparatus for mixing it with the vapors of hydrocarbon and water in order to generate the gas and to then force the gas thus generated into the boiler under a suitable pressure by means of a pump or compresser or other suitable contrivance.

It is advantageous to provide the gas-supply pipe with ajet or burner to permit of the quality of the gas being tested before it is used in the boiler.

I can, if desired, use more than one perforated distributing-pipein the boiler, or I can use one or more coils of perforated pipe or other suitable means for diffusing the ignited gas throughout the water.

That I claim is- 1. The improved method of generating steam by means of gas burned in direct contact with the water, consisting in first charging atmospheric air successively with hydrocarbon vapor and vapor of water, and then forcing the gas thus produced, under the requisite pressure, through a chamber located in the water to 'be converted into steam, and previously heated to high temperature by means of such gas, in which chamber it be.- comes ignited, and discharging the gas so ignited into the water, the production and utilization of the gas going on simultaneously, substantially as hereinbefore described.

2. In a steam-generator, the combination of an igniting chamber in the water-space thereof, a gas-supply pipe connected with said chamber, a perforated pipe or multiple-jet burner extending from said chamber within the water-space of the generator, a cook or valve between said chamber and the perforated pipe or burner, and a pipe extending from said chamber to the exterior of the generator and provided with a controlling valve or cock to permit the ignition of the gas in said chamber at starting, substantially as hereinbefore described.

3. In a steam-generator, the combination of an igniting chamber in the water-space thereof, a gas-supply pipe connected with said chamber, a perforated pipe or multiple-jet burner extending from said chamber within the water-space of the generator, a cock or valve between said chamber and the perforated pipe or burner, a starting pipe extending from said chamber to the exterior of the generator and of sufficient internal diameter to permit flashing back into the said chamber of the gas ignited at its extremity or mouth, a cock or Valve on said starting pipe, and means for simultaneously operating said cocks or valves so that when one is opened the other is closed, substantially as hereinbefore described.

4. A steam-generator having in the waterspace thereof an igniting chamber lined with refractory material, a gas-supply pipe c011- nected with said chamber, a pipe or tube ex tending from said chamber to the exterior of the generator for permitting the ignition of the gas in such chamber, a distributing device or multiple-jet burner extending from said chamber along the water-space of the generator, and controlling valves or cocks for governing the flow of the gas through said pipes respectively, substantially as, and for the purpose, hereinbefore described.

5. Ina steam-generator, the combination of the igniting chamber B in the water-space thereof lined with refractory material, the gas-supply pipe 0 connected with the said chamber, the pipe D extending from said chamber to the exterior of the boiler and provided with a controlling cock or valve, the perforated pipe or multiple-jet burner E for discharging the ignited gas into the water, and the cook or valve E operated from the exterior of the generator, said chamber being tightly closed with the exception of the openings whereby it communicates with said pipes G, D and E, substantially as described.

JOHN HASKINS LADD.

IVitnesses:

DAVID YOUNG, ALEXANDER W. ALLEN.

Images