US1617891A - Feed-water heater - Google Patents

Description

Feb. 15, 1927.

E. A. AVERILL.

FEED WATER HEATER 2 Sheets-Sheet 1 INVE'NTOR. -WQM llllll-l I/EIL Filed Sept.

WIT/v5.35.

R 4 0 BY WM 9 ATTORNEYS.

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2' Sheets-Sheet 2 FEED WATER HEATER F'lled Sept 29 1920 E. A. AVERILL Feb. 15 l 927.

W/ T175551 v q) 3 Patented Feb. 15, 1927.

' UNITED STATES 1,617,89l PATENT OFFICE.

EARL A. AVERILL, OF MOUNT VERNON, NEW YORK, ASSIGNOR TO LOCOMOTIVE FEED WATER HEATER COMPANY, A CORPORATION OF DELAWARE.

FEED-WATER HEATER.

Application filed September 29, 1920. Serial No. 413,598.

This invention relates to feed-water heaters for locomotives.

From a practical standpoint, it is advantageous to take off the steam supply for the heating elements from a point as close to the exhaust port from the cylinder as is possible, and heretofore this has been at tempted by taking the supply either from the exhaust passage leading from the valve chamber at a point intermediate such chamber and the nozzle or by a connection d1- rectly to the valve chamber cover, both arrangements, however, being open to objections. When the supply is takenfrom the exhaust passage, it is diflicult to make a sat isfactory connection because of the shape of the walls of such passage, unless this connection is made at some distance from the valve chamber or a new cylinder casting is made and provided especially for such a connection. Where the connection is made directly through the cover of the valve chamber, difficulties are encountered in mak ing proper inspection and repair of the valve which must be removed through this end of the valve chamber. WVhen the cover is removed, it is necessary to break a jolnt in the exhaust steam pipe which tends to increase the possibility of a steam leak at such point.

It is the primary object of my invention to provide an improved arrangement which overcomes the foregoing objections and gives a connection which is permanent in character and easily applicable to new or old locomotives, and which, in addition, permits the supply of exhaust steam to be obtain-ed at a point very close to the port lead ing from the cylinders to the valve chamber, thus securing the greatest economy and efficiency of the feed water heater.

I accomplish the foregoing, together with such other objects as may hereinafter appear, by means of a construction, the preferred embodiments of which I have illustrated in the accompanying drawings, wherein:

Fig. 1 is a diagrammatic side elevation of a locomotive illustrating the application of my improvements; Fig. 2 is a plan view of the valve chambers, saddle and heater element, drawn on an enlarged scale, one of the valve chambers being shown in section for purposes of clarity; and Fig. 3 is a partial plan and section of a detail of my invention, drawn on an enlarged scale.

Referring now to .Fig. l, the reference letter A indicates one of the cylinders; the reference letter B its valve chest; the reference letter C indicates the heater, which may be of any preferred construction; the reference letter D indicates a connection from a respective valve chest to one end of the heater; the reference letter E indicates the boiler feed pump; and the reference letter F the condensate return apparatus where such is employed. In the exemplification of the drawings, the heater C is mounted in front of the saddle G (which is shown as of the outside exhaust type) and extends transversely of the locomotive beneath'the smoke box but it is to be understood that other arrangements of the heater may be made. The details of the connection for supplying the heater with steam will now be described.

In the form of my invention illustrated in the drawings I supplement each chest B with a ring 7, approximately of the same internal diameter as the opening 8 ordinarily provided in the end of the steam chest casting for insertion, inspection, or removal of the valve parts. The ring portion 7 of the valve chest B is provided with a flange 9 for attachment to the steam chest proper and with a flange 10 for attaching the cover 11. i

These parts are secured in any desired man ner. Each ring 7 is provided with a flanged elbow 12 at the upper side and the heater is provided with similarly situated elbow castings 13, a suitable flanged coupling 14-. l

being interposed between the respective pairs of elbows.

It will be seen from the foregoing that the exhaust steam for the heater is taken off laterally directly from the exhaust port 15 of the steam chest 13, at a point at the top of the chest to one side of its bore, directly opposite the steam chest bushing 16the point of takeoff being thus substantially as close as possible to the point at which the exhaust steam from the cylinders enters the valve chest. Therefore, steam in the hottest condition is available for heating purposes. The arrangement is also such that the connection D, considered as a whole, is the shortest possible one between the heater and the valve chest. Economy and efiiciency of the heater are thus promoted. In addition,

10 the exhaust chamber giving access to the valve parts a supplemental ring-like member detachably secured over said opening, a separately detachable cover closing the outer end of said ring-like member, a steam port in the side of said ring member, and a con- 15 nection between said port and the heater.

In testimony whereof, I have hereunto signed my name.

, EARL A. AVERILL.

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