US1709533A - Locomotive-boiler-feed apparatus - Google Patents

Description

April 16,- 1929, N'. M; LOWER 'LOCOMOTIVE BOILER FEED APPARATUS Filgi Do. 20 zsneets-sneet f i To)! ATTORNEYS.

Patented Apr. 1e, '19 29 "UNITED STATES."

NATHAN M. LOWER, OF BELLEVUE,PENNSYDVANIA, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO THE STANDARD STOKER COMPANY INC,

PORATION OF DELAWARE.

PATENT QFFICE.

on NEW YORK, N. 'Y., A con- LOCOMOTIVE-BOILER-FEED APPARATUS.

Application filed December 20, 1920. Serial No. 431,893.

This invention relates to the means for supplying the feed water to the boilers of steam generatingequipment and is particularly useful in connection with locomotive practice.

The primary object of my invention s to provide means of the character specified which will automatically supply the feed water at all times to the boiler substantially in proportion to the demand of the working conditions obtaining.

I have developed my invention in connection with a locomotive in which the draft is created by means of a turbine operated ex-' haust fan located in the smokebox and in the accompanying drawings I have illustrated it in such association.

Other objects of the invention relate to the provision of a boiler feed pump with suitable motor means T therefor actuated by exhaust steam from the main cylinders of the locomotive, and to the provision of a suitable feed water heater which utilizes the steam exhaust, e'd from said motor means.

' In addition to the foregoing objects and in connection with an exhausting mechanism of the character above described, my invention contemplates the provision of a boiler feed pump which is actuated by the motor means which is provided for driving the exhausting fan.

Stated in other words my invention has for its object the provision of a boiler feed apparatus by means of which Iam enabled to automatically deliver the feed water to the boiler. substantially in proportion to the demand of the Working conditions obtaining as evidenced or registered by the exhaust from the main cylinders.

These together with such other objects as may hereinafter appear or are incident to my invention I obtain by means of a construction illustrated in the accompanying drawings-in a preferred form and as embodied in a locomotive. Of the drawings Figure 1 is a longitudinal vertical section through the forward end of a locomotive on line 11 of Figure 2 and Figure 2 is a somewhat irregular section and partial elevation transversely of the structure illustrated in Figure 1 taken.

as indicated on Figure 1.

Within the smoke box 1 and located be tween the tube sheet 2 and the stack 3 I have provided the transverse partition or chamber structure ets'uitably shaped to conform to the adjacent structure and provided with a'funnel shaped outlet 5 at'its forward end. A suction exhaust fan 6is mounted immediately adjacent the outlet 5 and the products of combustion are thrown outwardly therefrom in a manner well known in the art and discharged to the stack through the annular casing or housing 7 and the pctticoat pipe 8. Thecinders are thrown by the force of their impact against the inclined surfaces 9 into the annular chamber. 10 from which they are discharged through the piping 11. The shaft 12 for revolvingthe fan projects forwardly therefrom The outer end of the shaft is provided I with a worm 20 which is adapted to drive a gear 21 carrying a crank arm 22 at each side thereof. These crank arms are suitably con nected to the piston roc of a-reciprocating pump within the housing 2-1. A housing 25 encloses the gear and tl wornn Between the turbine and the pumping unit are arranged aj plurality of water tubes 26 within a steam. casing or housing 27. The tubes and the housing whichcontains them are bent in a U shape, the cndsof the tubes communicating with .a water inlet header 28 at one side and with a water outlet header 29 at the other side.. Feed Water from any suitable source of supply is delivered through the pipe 30 to the feed Water pump 24 which forces it through thepipe 31 to the inlet header 28 from whence it passes through the tubes and out.

through the outlet header 29 to the boiler check valve 32 through the pipe 88. As shown, turbineQshaft bearings 13, 14, annular fecdwater heater 26, 27, and feed pump 24 are combined in a unitary'structure ahead of the chamber structure 4, 7, around the fan shaft 12. The turbine and its steam supply chainber 13 are mounted at therea'i of the feedwater heater casing 26, andthe pump 24 on its front side. I

The steam which was delivered to the turbine through the openings 18 enters'the space within the tube casing 27 through a pluralityof openings 34. From the heater casing the "steam passes outthrou h another series of. openings 35 into the smo e box from which it escapes through the stack. The structure is braced by means of the tie plate 36 which is pivoted at its outer end uponthe pin. 3'( to the shell of the smoke box.

The operation of the device When the engine is working, exhaust steam from the main cylinders of thelocomotive (not shown) is. delivered through the hollow castinglG to the actuating motor which in this instance is shown afs-being aturbine.

The fan' is thereby revolved and'aets to ex- 'ha'ust' the products of combustion through the flues 38 in the manner wellfknown inthe ,art. The pump actuatingxmechanism be arranged on the same shaft withthefan an the turbine, it will be seen that it is 's-' sible to operate the pump at a s eedwliic is proportionate to the demand o the working conditions obtaining. The harder the locomotive is Working" the more exhaust steam will be deliveredto the turbine and the faster will the exhausting 'fanand thejfeed water pum be operated. By proper'ex'periment the turbine, the. fan and the ump can be so proportioned with respect tooiifzihother as to enable the pump to deliver feed water to the.

boiler substantially in proportion to the demand of the-working conditions obtaining.

. There may be occasions when it is ,de-j sirable or necessary to render the feed water pump partially or, even wholl 'inefiective and to this end I have provided the by-pass pipe 39, see Figure 2 particularly. A valve 40 interposed in this pipe 39 is manually controlled from the cab through the shaft 41 and crank arm 42, the latter being connected to a suitable reach rod not shown. When the valve 40 is opened the pump 24 will produce a circulation around through the pipe 39 instead of up through the pipe 31 and into the boiler through the check valve 32.1 Such action will take place by reason of the resistis as followsz an'ce which is encountered in the pipe 31 due to the high boiler pressure.

In the embodiment of my invention herein illustrated to' operate the feed water pump operated by the locomotive exhaust steam,

a feedwater heater for the locomotive around the shaft receiving the turbine exhaust; and a feed pump for the locomotive in front of said :feedwater heater driven by the shaft.

2. The combination with a steam locomocharging to the stack, and a fan at the forward end of said structure for passing the gases therethrou h as aforesaid; of a structure in the smo e box, ahead of saidifirst mentioned structure, comprising a feedwater heater around the fan shaft, a turbine on said 'tive smoke box, a chamber structure therein receiving gases from boiler flues and dis-.

shaft operated by. the locomotive exhaust steam and discharging into said .feedwater heater from one sidethereof, and a feed pump for the locomotive at the other side of said feedwater heater, driven from said shaft. I

3. The combination with-a steam locomotive smoke box, a chamber structure therein receiving gases from boiler flues and discharging to the stack, and a fan at the forward end of said {structure for passing the gases therethrough "as aforesaid; of a structure in the smoke box, ahead of said first mentioned structure, comprising an-annular feed water heater'around the fan shaft, and a turbine on said'shaft operated by the locomotive exhaust steam and discharging into ."said feedwat'er heater. 1

In testimony. whereof, I signed my name NhTHAN M. LOWER.

have hereunto

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