US914037A - Steam-pump. - Google Patents

Description

B. 0. GAGE.

STEAMPUMP. grrmoumn FILED DEO.16,1908.

914,037.. Paten ed Mar. 2, 1909.

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B. O. GAGE. l

STEAM PUMRI APPLICATION rump DEO.16,1908.

914,037, r Patented Mar. 2, 1909. I

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TBS AT BURT O. GAGE, OF WARREN, MASSACHUSETTS, ASSIGNOR TO WARREN STEAM PUMP COMPANY, A CORPORATION OF MASSACHUSETTS.

STEAM-PUMP.

Specification of Letters Patent.

Patented March 2, 1909.

Application filed December 16, 1908. Serial No. 467,884.

To all whom it may concern:

Be it known that I, BURT O. GAGE, a citizen of the United States, residing in Warren, in the county of Worcester and State of Massachusetts, have invented an Im rovement in SteamPumps, of which the fo lowing description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention is embodied in a steam pump, and relates mainly to the valve mechanism which governs the admission and exhaust of steam to the steam cylinder or cylinders of the pumping engine.

The engine is shown embodied in a twin pumping engine comprising two steam cylinders and a valve actuating mechanism common to both, the organization being such that the pistons in the two cylinders make their strokes simultaneously but in opposite directions.

The main object of the invention is to provide for the prompt removal of water of condensation from the valve driving engine, and thereby eliminate difficulties sometimes encountered in pumping engines of this class due to the accumulation of water of condensation in the working parts of the valve driving engine which interferes seriously with the proper operation especially when steam is first turned on to set the pump in operation after it has been at rest and has become cool.

Figure 1 is a front elevation of the steam cylinders and valve driving engine of a twin pumping engine with the bonnets or top plates of the steam chests removed, and showing the valves contained therein; Fig. 2 is a sectional plan, on line x Fig. 1; Fig. 3 is a front elevation of the cylinder of the valve driving engine on a larger scale, the bonnet and side walls of the steam chest and the valve being removed, showing the face of the valve seat and the port openings therein; Fig. 4 is a transverse section of the valve driving engine on the plane indicated at 0: Fig. 3; Fig. 5 is a sectional plan on line 00 Fig. 4; and Figs. 6 and 7 are a back and face view, respectively, of the controlling valve of the valve driving engine.

The general arrangement of the main steam cylinders and their steam [chests and controlling valves, and .of the valve driving engine for operating the same, may :be the same as is commonly employed in what are known as twin pumping engines in which there are a pair of steam cylinders, the main actuating pistons in which make their working strokes simultaneously, but in opposite directions. In the embodiment of the invention herein shown, the main cylinders are represented at 2, 3, Figs. 1 and 2, each cylinder having a suitable steam chest, marked 20 and 30, respectively, and into which steam is admitted from the steam pipe 5 (Fig. 1), said steam chests containing the main valves 6 and 7 which control the admission and exhaust of steam in the usual manner. The main valve 6 for the left hand cylinder is shown as a D slide valve, and the valve 7 for the right hand cylinder as a B slide valve, said valves being connected with and operated by a rod 8 actuated by the piston 9 of the valve driving engine, said piston 9 working in a cylinder 10 and being controlled as to its 0 V eration by the governing or controlling va ve 12 which will hereinafter be described. By employing a D valve in one, and a B valve in the other of the steam chests, the main cylinder and their ports and valve seats may be alike, and the simultaneous movement of the two valves in one direction, say to the right from the position shown in Fig. 2, will cause steam to be admitted to the lower end of one cylinder and to the upper end of the other (to the lower end of the left hand and upper end of the right hand cylinder when the valves are moved to the right from the position shown in Fig. 2) and the exhaust will be from theopposite end of each cylinder to that into which the steam was admitted.

The cylinder 10 of the valve driving engine stands in horizontal position, and the valve 12 which governs the admission and exhaust of steam for operating the piston 9 of the valve driving engine works in a vertical direction, its rod 14 (see Fig. 1) being operated by a tappet arm 15 to shift the said valve 12 about as the main pistons complete a working stroke, so that the valve actuating piston 9 will then be caused to make its working stroke to shift the mainvalves 6, 7, and thereby cause the main pistons to make their next stroke in the opposite direction to the one just completed.

With the usual location of the ports leading to the ends of the cylinder 10 of the valve driving engine, said ports would enter the cylinder above its lowest point, and an opportunity would thus be afforded for accumulation of water of condensation in the said cylinder, and as the ports of the valve driving engine .are relatively small, such accumulation'of water is liable to clog the ports, and to interfere with or wholly obstruct the opera tion of the valve driving engine, especially when steam is first turned 011 to start the operation of the pump. In order to provide for the prom t drainage of the cylinder and ports of t e valve driving engine, the steam chest for the said valve driving engine is located as best shown in Figs. 3 and 4 below the center or axis of the cylinder, and steam admission ports 16, 17 are provided leading from the upper part of the valve seat 18 in the steam chest 19 of the valve driving engine to the ends of the cylinder 10, as best shown in Figs. 3 and 5, and independent exhaust ports 20, 21 are provided leading from the valve seat 18 to the ends of the cylinder 10 at the level of the lowest portion thereof, as best shown in dotted lines, Fig. 4.

Steam is admitted to the steam chest 19 through a port 23, best shown in Figs. 3 and 4, which communicates, as shown in dotted lines, Fig. 1, with the steam chest 20 of one of the main engine cylinders, so that steam is admitted to the chest 19 of the valve driving engine as soon as it is turned on through the main steam pipe 5 (Fig. 1) to the steam chests of the main engine to start the operation thereof.

An exhaust port 24 (see Fig. 4) formed in the cylinder of the valve driving engine similar to the steam port 23, just described, communicates with the main exhaust passage 50 (see Fig. 2) from the main engine cylinders, and has a port opening 25 (see Figs. 3 and 4) into the valve seat 18 of the valve driving engine lying between the port openings of the exhaust ports 20, 21 leading to the ends of the cylinder 10 of the valve driving engine, said exhaust port openings being arranged in horizontal alinement, as shown in Fig. 3, and on the level with the lowermost part of the cylinder 10, so that any water of condensation which may accumulate in the said cylinder 10 naturally drains away by gravity through the exhaust ports. When the valve driving piston 9 makes its movement toward the end of the cylinder which is in communication with the exhaust, the steam inlet port 16 or 17 through which steam is at this time being admitted connects the steam chest and cylinder at a substantially higher level, and is, therefore, in no danger of becoming clogged by any water of condensation that may accumulate before being drained away through the exhaust port, as has been described.

The valve 12 of the valve driving engine is provided with a cavity and passages, as shown in Figs. 6 and 7, to control the admission and exhaust of steam through the ports 16, 17, 20, 21, above described, said valve having a passage or cut-away portion 17 000- operating with the steam inlet port 17 which is uncovered by the valve 12 when moved downward so thatthe passage or cut-away portion 170 leaves the valve seat opening of the port 1.7 uncovered and in communication with the steam chest, while the upward movement of the said valve brings the portion which is not passaged or cut away over the said port opening and thus closes the same.

A passage or cut away portion 160 c06perates with the opening of the port 16, openingor uncovering the same when the valve is moved to its upward position, and the valve closing the said port opening when in its downward position. The passages 160, 170 may be in the form of recesses-in the seating face of the valve, as shown, or otherwise constructed to afford openings in the seating face of the valve which are in communication with the steam chest in which the valve works at all times.

The controlling valve 12'is provided with a cavity 250 of the form shown for controlling the exhaust ports, said cavity being in the seating face only of the valve and not in communication with the steam chest. Said cavity has a central portion which remains in communication with the exhaust port 25 throughout the entire stroke of the valve, and has lateral extensions or branches from said central portion at opposite sides of the middle of the valve, and at difierent levels, as shown, such that the downward movement of the valve brings the left hand branch of the cavity, viewed in the position shown in Fig. 6, into communication with the exhaust port 20 leading to the left hand end of the cylinder 10, thereby connecting said ports 20 and 25, and permitting steam to exhaust (or water, if there be any to drain) from the left hand end of the cylinder, steam. being admitted at this time through the passage 170 and port 17 to the right hand end of the cylinder while the upward movement of the valve which, as before explained, cuts off admission through port 17 to the right hand end of the cylinder, and admits steam by passage 160 and port 16 to the left hand end of the cylinder, also places the right hand branch of the cavity 250 in communication with exhaust port 21, and thus connects said port 21 with the exhaust port 25 and permits steam to exhaust, or water, if there be any to drain, from the" right hand end of the cylinder.

By this construction and arrangement of the ports and controlling valve of the valve driving engine, water of condensation is prevented from accumulating in said valve driving engine, which thus operates promptly and eflectively even if there is considerable condensation of steam going on.

Claims.

1. The combination of the cylinder and piston of the valve driving engine of a steam pump with a controlling valve and valve seat, and exhaust ports having port openings in horizontal alinement in the valve seat, and leading to the ends of the valve driving engine cylinder at the lowest level of the steam space therein, substantially as and for the purpose described.

2. The combination of the cylinder and piston of the valve driving engine of a steam pump with a controlling valve and valve seat, and steam inlet ports leading from the said valve seat to the ends of the cylinder; and exhaust ports leading from the valve seat to the ends of the cylinder at a lower level than said inlet ports, substantially as and for the purpose described.

3. In a steam pump, a valve driving engine having a horizontal cylinder, and main valve actuating piston working therein, combined with a controlling valve and valve seat, and steam inlet ports leading from said valve seat to the ends of said cylinder, and exhaust ports in horizontal alinement and at a lower level than said inlet ports leading from the valve seat to the ends of said cylinder, said controlling valve having passages cooperating with said inlet ports, and a cavity cooperating with said exhaust ports, substantially as described.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

BURT O. GAGE.

Witnesses:

J 0s. P. LIVERMORE, M. E. COVENEY.

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