US960704A - Feed heating and superheating boiler. - Google Patents

Description

s. A. REE'VE FEED HEATING AND SUPERHEATING BOILER. APPLICATION FILED MAR. 2,1906.

960,704, Patented June 7, 1910.

ANDREW a GRAHAM c0 FNDTO-LITHDGNAPHERS, wAsm UNITED STATES PATENT @FIGE.

SIDNEY A. REEVE, 0F WORCESTER, MASSACHUSETTS, ASSIGNQR T0 CHARLES E. BROWN, TRUSTEE, OF READING, MASSACHUSETTS.

FEED HEATING AND SUPERHEATING BOILER.

Specification of Letters Patent.

Patented June '7, 1910.

To all whom it may concern:

Beit known that I, SIDNEY A. Brave, a citizen of the United States, residing at Vorcester, in the county of WVorcester and State of Massachusetts, have invented cer tain new and useful Improvements in Feed Heating and Superheating Boilers, of which the following specification and accompanying drawings illustrate the invention 1n a form which I now regard as the best out of the various forms in which it may be embodied.

This invention relates to locomotive-type boilers employing superheaters which are made up of coils or sections of steam-pipe occupying a gas-chamber in the barrel of the boiler.

The invention consists in an improved form of double superheater which may be disconnected or taken apart in sections and preferably capable of removal and replacement from both sides of the boiler.

In its preferred embodiment my invention involves the use of a plurality of eduction-pipes or headers which, when employed with a double superheater of the character mentioned, promote the accessibility and removability of parts and also enable the eduction-pipes and other parts of the superheater to avoid certain chambers of the boiler in their passage to the cylinders. The superheater is thus especially adapted to a loca-.

tion at an intermediate point in the passage of the gases toward the stack. For example it may be located between vaporizing and preheating portions of the boiler although not confined to such a location. A further feature of the invention consists in making the attachment of alternate tubes on opposite sides of the manifolds.

Of the accompanying drawings, Figure 1 represents a longitudinal section of the forward part of a boiler provided with my improved superheater. Figs. 2 and 3 represent sections on the lines 2-2 and 3-3 of Fig. 1. Fig. 1 represents a detail side elevation of the upper header of the superheater and connected coils. Fig. 5 represents a sectional view on a reduced scale, showing the loc0- motive.

10 represents the shell or barrel of the boiler, provided with a rearward set of firetubes 11 contained in a vaporizingchamber 120 and a forward set of fire-tubes 40 contained in a preheating-chamber 13. The adj acentends of the two sets of tubes are expanded into tube-sheets 12 and llO, and between their ends is located a gas-chamber 15 containing the superheater, which thus encounters the gases while they are at a comparatively high temperature.

18 is the forward smoke-box or gas-chamher having a stack outlet 19 to the atmosphere. The boiler is fed by a feed-pipe 17 entering the preheating-chamber l3 and the hot feed-water flows from this chamber into the vaporizing-chamber 120 through pipes 41.

20 are the engine cylinders located in the usual position in the locomotive and having valve chests 21.

22 is the dry-pipe for the steam leading from the steam-dome of the vaporizingchamber 120 in the usual manner; butjinstead of proceeding directly to the steamchests of the cylinders it terminates in a body extension or manifold 23 located in the gas-cl1amber 15. This member forms the induction-manifold for the superheater and it has connected with it two sets of superheating coils 27 whose lower ends are connected respectively with two eduction headers or manifolds 28 leading forward to the cylinders and connecting with the steamchests and with each other by a cross passage 29 in the cylinder casting 3 1. Thus either set of coils may feed both cylinders. The upper ends of the coils are attached to the induction-manifold 23 by means of fittings 30 and bolts 31, while the lower ends are connected with the eduction-manifolds 28 by fittings 32 and bolts 33. The upper fastenings are accessible through an open ing in the wall of the gas-chamber 15 which is provided with a removable cover 2 1, and the coils are made accessible and withdrawable through openings in either side of said chamber which are normally closed by removable covers 26. The eduction-pipes or manifolds 28 may be incased for a portion of their length by sheathings 25 (omitted in Fig. 1). In this particular embodiment the superheating-coils 27 in the two sets overlap each other, the coils of one set projecting into the spaces between the coils of the opposite set, while both ends of each coil are on the same side of the boiler, thus promoting their ready removability. Not only does this opposite attachment of alternate coils contribute to the substantial filling of the gas-space with superheating surface, but ltgains for each fastening to upper or lower manifold the lateral space afforded by two ideas without departing from my invention.

I claim A locomotive type superheating boiler comprising a vaporizing-chamber traversed by the furnace gases and havin a steamoutlet, a gas-chamber forward of the vaporizing-chamber having side openings in its opposite walls provided with removable covers, an upper manifold structure connected with the steam-outlet of said vap0- rizing-chamber, two eduction-manifolds, two sets of superheatingcoils occupying said gas chamber and removable respectively through the opposite side openings of the chamber, and removable fastenings connecting the ends of said coils with the upper and lower manifolds.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses the 26th day of February 1906. 1

SIDNEY A. REEVE.

Vitnesses HENRY L. PARKER, HENRY L. PARKER, J r.

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