US1109157A - Steam-pump. - Google Patents

Description

H. H. WESTINGHOUSE.

STEAM PUMP.

APPLICATION FILED NOV. 27,1912. 7 1,109, 1 57, Patented Sept 1,191 1 II I Q\ I IHHIHHH I Q Q INVENTOR '1 VI/4W" fiawm WITNESSES THE NbR Rls PETERS CGIPHOTD-LITHQ. WASHINGTDN. D. c.

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HENRY WESTINGHOUSE, 2 NEW Yeas A umes TO THE WESTINGHOUSE AIR BRAKE ows- Y. OF WILMEBPINGQ rEN s X- erva a sQaf QaAr QN OF PENNSYLVANIA.

sm t-PUM Specification of Letters ,Eatent.

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To all whom it may concern.

Be it known that I, HENRY H. \VnsrrxsnoUsu, a citizen of the United States, residing at New York, inthe county of New York and State of New York, have invented new and useful Improvements in Steam- Pumps, of which the following is' aspecification.

This invention relates to fluid compressors, and more particularly to means for cooling the cylinder in which the fluid is compressed. W

It is well known that in the compression of fluid considerable heat is produced which is transmitted to the cylinder walls and piston and often the temperature ofthe cylinder walls is raised to such a point asto destroy or decompose the cylinder lubricant so that proper lubrication is interfered with. It is thushighly desirable to provide means for keeping the temperature of the cylinder walls and piston down to a point at which the lubricant can act properly.

The principal object of my invention is to provide means for cooling the cylinder walls, in which exhaust steam from the compressor is employed as the cooling agent.

Actual tests of temperatures developed in a fluid compressor show that the temperature of the fluid compressed runs much higher than the temperature of the exhaust steam from the compressor. For example, in one test it was found that the temperature of the compressed fluid was about 490 degrees in compressing the fluid to 100 pounds pressure while the temperature of the exhaust steam was approximately 300 degrees.

he much lower temperature of the exhaust steam therefore permits of its use as a cooling agent for cooling the compressor piston and the walls of the cylinder.

In the accompanying drawing; Figure 1 is a front elevation, partly in section, of a compound steam driven fluid compressor with my improvement applied thereto; and Fig. 2 a transverse section on the line ca of Fig. 1.

As shown in Fig. 1 of the drawing, the fluid compressor may comprise a steam cylinder casing 1, a fluid compressor cylinder casing 2, an intermediate section 3 between the casings l and 2, a steam valve head 4, and a fluid cylinder head 5. The compressor shown is of the well known compound type having a high pressure steam cylinder 6 opposite the low pressure fl uid' cylinder 7 and the low pressure steam cylinder 8 opposite the high pressure fluid cylinder 9. Within the steam cylinder 8 ismounted steam piston 10 which is connected by piston rod 11 with high pressure fluid compressing piston '12.

connected by a passage 16 to the exhaust.

steam passage 17 leading to the exhaust pipe 14, a drain pipe 18 being provided at the lowermost portion of the chamber 15 to permit the escape of the products of condensation. It will now be evident that when the compressor is running, exhaust steam from the pump circulates around the high pressure air cylinder and thereby maintains the cylinder walls and piston relatively cool, so that the lubricant employed in the cylinder will not be destroyed as to its lubricating qualities.

While the construction illustrated in the drawing provides for only a partial flow of exhaust steam around the fluid compressing cylinder, if desired the final exhaust may be an opening to the atmosphere directly from the cooling chamber 15, so that all of the exhaust steamwill pass around the cylinder.

The invention is particularly desirable in connection with a compound fluid compressor but may of course be employed with a simple compressor.

lVhile the invention is described in connection with the cooling of the high pressure cylinder, it will be understood that the low pressure cylinder may also be jacketed and cooled by the flow of exhaust steam as well as the high pressure cylinder.

By means of my invention, the fluid compressing cylinders are kept cool without the employment of additional apparatus for circulating water or the like around the cylinder, such as heretofore employed, as according to my improvement it is only necessary to connect the exhaust steam outflow to the cooling jacket to accomplish the desired result.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a fluid compressor, the combination with a cylinder, a piston therein for compressing fluid, a steam cylinder, and a piston therein operated by steam for actuating said fluid compressing piston, of a cooling jacket surrounding the fluid compressing cylinder and a passage for supplying exhaust steam from said steam cylinder to said jacket.

2. In a compound fluid compressor, the combination With high and low pressure steam cylinders and high and low pressure fluid compressing cylinders, of means for cooling the Walls of the high pressure fluid compressing cylinder by the flow of exhaust steam from the steam cylinders.

3. In a cross compound fluid compressor, the combination with high and low pressure cylinders containing pistons for compressing fluid, a high pressure steam cylinder containing a piston connected to the low pressure fluid compressing piston, and a low pressure steam cylinder containing a piston connected to the high pressure fluid compressing piston, of a cooling jacket for the high pressure fluid compressing cylinder and means for supplying exhaust steam from the low pressure steam cylinder to said jacket.

In testimony whereof I have hereunto set my hand.

HENRY H. WESTINGHOUSE. Witnesses:

A. M. CLEMENTS,

S. W. KEEFER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

-Washington, D. C.

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