US2413717A - Fluid system - Google Patents

Description

Jan. 7, 1947. J KERR 2,413,717

FLUID SYSTEM Original Filed April 30, 1938 Fig 1 FEE WATER i I86 STE/4M WATER 60f /92 IN VEN TOR:

Wrd J Kerr,

A TI'ORN E Patented Jan. 7, 1947 UNITED STATE PATENT OFFICE FLUID SYSTEM Howard J. Kerr, Westileld, N. J., assignor to The Babcock & Wilcox Company, Jersey City, N. J

a corporation of New Jersey Original application April 30, 1938, Serial No. 205,229. -Divided and this application July 11, 1942, Serial No. 450,546

2 Claims. ((1122- 459) I I88 and upwardly through the or accelerate the positive separation of steam and water after the washing of the steam.

The invention provides apparatus including a centrifugally acting steam and water separator in which the separation of steam and water is acceleratedby the introduction of feed water tothe whirl chamber of the separator in a substan.-' tially tangential direction, and in such a way as to induce a higher velocity of tangential steam flow into the whirl chamber. I

Other objects of the invention will appear as the following description proceeds.

The invention will be described with reference to the accompanyingdrawing in which a .preferred embodiment is illustrated.

- In the drawing:

Fig. 1 is a vertical section through a steam and water drum equipped with a centrifugal steam separator and-steam washer;

Fig. 2 is an enlarged view of the centrifugal separator andsteam washer used in the drum shown in Fig. 1; v v I Fig. 3 is an elevation of the Fig. 1 centrifugal separator and steam washer taken at right-angles to the elevation shown in Fig. 2;

Fig. 4 is a plan of the Fig. 3 centrifugal separator and steam washer, looking upwardly as indicated by the arrow at the bottom of Fig. 3.

Fig. 1 of the drawing shows the steam and water drum which is intended to be the steam ofitake drum of the steam generator. It is intended to occupy a position similar to that of the drum I2 in Fig.1 of applicant's Patent 2,289,969 which issued on July 14; 1942, upon the parent application, Serial Number 205,229, filed April 30, 1938, of which this application is a division.

This drum is connected by steam circulators I12 to a forwardly disposed drum, and it is connected to a submerged drum by the water tubes I14. Feedwater is supplied to the drum I through the tubular member I18 which is connected with a plurality of upwardly extending tubes I80 having nozzles I82 discharging into the tangential inlets I84 of the combined steam separators and steam washers I86. These inlets are in communication with the steam space of the drum I10 so that steam and water mixtures enter the washers I86 tangentially at high velocity. The separated steam is discharged axially of the washers steam oiltake tubes I98 to a superheater or a point of use. Water is discharged tangentially outwardly of the combined separators and washers I86 through the outlets I92 and into the drum I18.

From an inspection of Figs. 1 to 4, inclusive, it

will be noted that the inlet opening of each nozzle 184 is disposed in the upper part of the steam space of the drum I10 and that it opens downwardly toward the water space .of the drum. With this arrangement the steam flow entering the nozzle I84 takes place, to a considerable extent, upwardly past an outlet I82. The latter is formed as a nozzle with a flattened outlet end as clearly indicated in Fig. 3. Thus, water of less concentration separated from the steam in the whirl chamber I86 is directed in a fiat Wide stream in intersecting relation to the flow of steam into 'a nozzle I84. In addition to this washing effect, the position of the feed water nozzle I82 centrally of the inlet I84 (as clearly indicated in Fig. 2 of the drawing) not only causes an increase in velocity 'of the whirling fluid within the whirl chamber I86, but it also acts to cause considerable mixing of the feed water and steam in the inlet I84 before the whirl chamber is reached. Thus, in eifect, each combined steam washer and whirl chamber I86 effects two stages of steam washing.

I claim:

1. In a steam generator, a steam and water drum having a water level therein, means whereby a steam and water mixture enters the drum, means forming the whirl chamber of a combined steam washer and steam and'water separator disposed in the steam space of the drum, means forming a steam oiftake leading from the drum,

the whirl chamber having a separated steam outlet directly connected to said ofitake, means forming a primarywhirl chamber steam and water inlet tangentially arranged with reference to the whirl chamber and receiving steam flow from the drum steam space, a feed water nozzle directly communicating with a source of relatively pure feed water and directing the feed 2. In a"steam generatona steam and water drum having a water level therein, means forming a steam ofltake for said drum, means whereby steam and water mixtures enter the drum, means forming the whirl chamber of a centrifugal steam and water separator disposed within the steam space of the drum, means forming a whirl chamber steam inlet open to the steam space of the drum and directing the incoming fluid substantially tangentially into the whirl chamber, means whereby relatively pure feed water is discharged l0 inlet.

in a let within the said whirl chamber inlet and EDWARD J. KERR.

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