US885005A - Feed-water heater. - Google Patents

Description

' PATENTED APR.14 1908.

885005 G. w. 'J. WHITE.

FEED WATER HEATER. v APPLIOATION FILED 110V. 20, 1905. RENEWED AUG. 7, 1907.

3 M fQK 0., WASHINGTON. n. c.

No.'885,005. V

(aw. J. WHITE.

PATENTED APR.14, 190s.

PBED WATER HEATER. APPLICATION FILED NOV; 20, 1906f RENEWED AUG. 7', 1907.

2 SHEETS-SHEET 2.

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. by declare the followin to be a full, clear,

UNITED STATES PATENT OFFICE.

GRANVILLE WILLIAM JOHN WHITE, OF RYDE, NEW SOUTH WALES, AUSTRALIA.

FEED-WATER HEATER.

Application filed N ovember 20,

Patented April 14, 1908. 1905, Serial No. 288,265. Renewed August 7, 1907. Serial No. 387,507.

To all whom it may concern: close a thermometer to ascertain the tem- Be it known that I, GRANVILLE WILLIAM perature of the heated water. JOHN WHITE, a citizen of the Commonwealth Referring to the accompanying drawings, of Australia, residing at Belmore Road, which form part of this s ecification: Figure Ryde, in the State of New South Wales, l:.is a vertical sectional elevation of an ex- Commonwealth of Australia, engineer, have I haust pipe such as are in use upon locomoinvented certain new and useful Improvetive engines. Fi .2:is asimilar section to ments in Feed-Water Heaters; and I do here- Fig. 1, but with t e invention applied thereto. Fig. 3:is a horizontal section on line a-a of Fig. 2, taken across the sediment chamber. Fig. 4:is a horizontal section on line b?!) of Fig. 2, taken across the difand exact description 0 the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to a superheater for holding feed water for boilers, and is serviceable as an attachment to exhaust pipes connected with the passages of steam cylinders which are a part of steam engines. Inthe general disposition of its parts, provision is made for the interposition between divided ortions of the exhaust ipe of a steam difusion chamber. The base plate of such. chamber carries the inlet ortion, and the crown plate, the outlet portion of the divided exhaust pi e or pipes. The crown plate is also pierce to receive any desired number of tubes which encircle the proximate art of the exhaust pipe. It is through t ese tubes as well as the centrally situated outlet pipe that the steam passes after its diflu sion within the chamber. These parts are wholly inclosed with an outer casing supported u on and attached to a'bottom flange or foun ation plate; such flange likewise supports the inlet portion of the divided exhaust pipe. It also forms the bottom of a sediment chamber which is se arated from the main circulating part of t e heater by the diffusion chamber, a diminished annular space connecting the two parts. The casing is provided with a removable cover, ierced to receive the upwardly projecting tu es and exhaust pipe, and may be secured with clamping nuts fixed upon the ends of the tubes, or separate bolts may be provided for the purpose. The clamping nuts of the tubes are constructed to allow the free exit of the steam, the outlet orifice being shaped to any suitable design to direct or divert the fiowZof the escaping steam, as may be desired. Inlet'and outlet connections are providedfor filling, circulating, discharging and cleansing the superheater. At any suitable part of the casing a gage glass is fixed, adapted to inspace. Fig. 5z-is a horizontal section on line cc of Fig. 2, taken across the circulating art of the heater, showing tubes and exaust ipe in crown late of diffusion chamber, a so diminished annular space. Fig. 6 :is a plan or top view of the outlet end of Fig. 2. Figs. 7 and 8:are enlarged details showing in vertical sectional elevation forms of clamping nuts, as in Fig. 2, suitable for securing the removable top cover. Fig. 9zis a vertical sectional elevation of an exhaust steam superheater constructed according to the invention, as applied to a simple form of exhaust pipe other than shown in Fig. 1. Fig. l0:is an elevation showing the steam diffusion chamber in association with the divided portions of the exhaust pipe, and the encircling tubes represented in Fig. 9, but omitting the outer casing and top cover. Fig. llz-is an enlarged vertical sectional elevation of the steam diffusion chamber as in Figs. 9 and 10. Fig. 12:is a horizontal section on line dd of Fig. 9, taken across the diffusion chamber. Fig. 13:is a horizontal section on line e-e of Fig. 9, taken across the circulating part of the heater.

Steam engines are constructed in a great variety of forms, having their exhaust pipes suitably located to meet the requirements of each particular form. pipes are necessary, only.

There are instances where the exhaust pipes are made to dischar e the steam into a smoke box, at a distance i rom the cylinders, as in the case of marine and portable engines, locomotives or such like, where a forced draft is in operation. It is obvious that superheaters made according to this invention would vary somewhat in the details of their construction when applied to the differin others, a single pipe fusion chamber and diminished annular In some, bifurcated cut classes of engines; therefore the essential features are shown in the illustrations as they would appear applied to two selected types.

For the purposes of. this invention it is essential to break the continuity of the exhaust pipe at any suitable part of its length, so as to interpose the diffusion chamber A.

In Fig. 1, a bifurcated exhaust pipe com mon to some forms of locomotive engines is shown in its entirety, so that upon comparison with the other figures the feature of the interposed diffusion chamber may be more clearly discerned. In Fig. 2, the general contour of Fig. 1 is preserved as regards the upper and lower portions of the pipes, which are suitably surrounded with an outer casing, but the distinctive parts are similarly lettered as for a single pipe of the type shown in Figs. 9 and 10.

The lower portion B of the disconnected exhaust pipe has the flange C, for connecting with a cylinder, two such flanges being necessary when a straddling pipe is used as in Fig. 2.

At its upper end the inlet pipe B is secured to the base plate A of the diffusion chamber A, and the outlet pipe B is united at its lower end to the crown plate A This plate is suitablypierced to receive the supplemental steam tubes D, which encircle the outlet pipe. The said pipe and tubes maybe any desired length and fastened by screwing or such like suitable means.

They provide the required heating surface within the circulating portion E, above the diffusion chamber. The whole of these parts are inclosed within the casing F, which in Fig. 2 conforms to the distinctive shape of the double pipe formation, and is supported upon the foundation plate G, which is likewise united to the lower portion B of the exhaust pipe. In Fig. 9, the casing F is shown cylindrical in form supported upon and secured to the circular foundation plate G. In both types this foundation plate forms part of the sediment chamber H.

The whole of the connecting parts would necessarily require to be made water-tight. The upper ends of pipe B and the tubes D require to be carried beyond the movable top cover I, which may fit loosely if the heater is not to be under pressure but for the purpose of securing it clamping nuts J and K are provided, the former having the straight outlet J and the latter the horizontal and bell mouth orifice K These are serviceable to direct the flow of the escaping steam in any suitable direction. Figs. 7 and 8 are types of nuts suitable for this purpose. As a further security the bolts L are provided.

In both types of superheater, the casing F would be the container for water to be heated with the exhaust steam as it passes through the inlet pipe B, and thence into the diffusion chamber A, where expansion takes place sufficiently to cause it to fill the outlet pipe B and the tubes D, from whence it escapes through the orifices K and J respectively, and also from the exit orifice of the outlet pipe B Between the circulating part E and the sediment chamber H the diminished annular space M is provided as a means of communication, to enable the sediment to escape downwardly, whence it may be drawn oil at the outlet pipe 0. The water circulating chamber, sediment chamber and thin inter vening connecting space M. are all formed between the said casing on the outer side and the wall or shell of the steam diffusion cham her and the exhaust pipe on the inner side.

In Fig. 2 the outer casing F shown united with the flanges P, in close proximity to the diffusion chamber A, and secured with bolls Q, which is regarded as a suitable mode of construction for that particular type.

For filling, circulating, discharging and cleansing the superheatcr suitable inlet and. outlet pipes R and S are placed in desirable positions, having the usual stop cocks where required. The downuutrdly directed pipe R (shown only in Fig. 9) is serviceable for circulating the water within the chamber 15, and may be in the form of a coil if desired.

As a means for ascertaining the tempera ture of the heated water the gage connections S are affixed to any suitable part of the easing F, and the gage glass T is adapted to inclose the thermometer. Such connections would consist of the well known. devices used for such purposes.

Having now described my invention, what I claim as new and. desire to secure by Letters Patent is 1. In a feed-water heater, the combination of an expanded steam diffusion chamber with an exhaust pipe in which it is located and means for the passage of feed water in proximity to said chamber though exterior thereto and separated from the steam which fiows through the said chamber substantially as set forth.

2. .In a feed-water heater, the combination of an exhaust pipe and a diffusion chamber arranged therein with an outer casing forming a water circulating chamber between it and the shell of said chamber and an inlet and outlet for pern'iitting the flow of water through said space substantially as set forth.

3. In a feed-water heater, the con'ibination of an exhaust pipe and. a-steam diffusion chamber arranged between sections of the same, with. a casing surrounding said chainber and leaving between it and the wall of the latter a water circulating chamber and sediment chamber substantially as set forth.

4:. In a feed-water heater, the combination of an exhaust pipe and a steam diffusion chamber located between sections of the same with a casing surrounding said chamher and a base plate A and crown pipe A connecting said parts as explained, to leave a Water circulating chamber and sediment chamber exterior to said diffusion chamber substantially as set forth.

5. In a feed-water heater, the combination of a steam diffusion chamber with an exhaust pipe in which it is located, a casing surrounding said chamber and leaving a water circulating chamber exterior thereto and supplementary steam pipes which extend from said steam diffusion chamber up through said water circulating chamber substantially as set forth.

6. In a feed water heater the combination of a steam diffusion chamber and a water circulating chamber exterior to and separate from the same, with a removable cover above both of them, supplemental steam pipes extending from said diflusion chamber up through said water circulating chamber and said cover and nuts above said cover which engage the protruding upper ends of the said tubes and bear against the said cover substantially as set forth.

7. In a feed water heater a steam diffusion chamber and an exhaust pipe which supplies the steam that expands within and flows through the same, in combination with an exterior casing which forms between itand the wall or shell of said diflusion chamber and said pipe a water-circulating chamber, a sediment chamber and an annular space M of diminished thickness connecting these two latter chambers substantially as set forth.

In testimony whereof I aflix in presence of two witnesses.

GRANVILLE WILLIAM JOHN WHITE.

Witnessesz' JOHN JASPER STONE, JAMES JOHNSON SHUTTLEWORTH.

my signature,

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