US1348196A - Apparatus for treating feed-water - Google Patents

Description

SQFPARATUSFOR TREATING FEED WATER.

APPLICATION FILED MAR. 11, I916- Patented Aug. 3, 1920.

IGNAC PIOTR WINER, OF wAnSAw, RUSSIAN POLAND.

APPARATUS FOR TREATING FEED-WATER.

Specification of Letters Patent.

Patented Aug. 3, 1920.

Application filed March 11, 1916. Serial No. 83,612.

To all whom it may concern:

Be it known that I, IGNAo PIOTR WINER, a citizen of the Russian Empire, and residing at Varsaw, Russian Poland, have invented certain new and useful Improvements in Apparatus for Treating Feed- WVater for Boilers, of which the following is a Specification.

This invention relates to apparatus for removing any air or gas bubbles from feedwater, softening it and heating it to the temperature of live steam and, particularly, to the feed-water tank provided in the upper part of the boiler.

In apparatus for completely removing the air or gas bubbles from feed-water, softening it and heating it to the temperature of live steam it is of very great importance to be able to exactly control these operations from the outside, since the downwardly flowing water heated to the temperature of live steam may be supplied to any desired part of the water space of the boiler and consequently may exercise a great influence on the circulation in the boiler. For this purpose I make use of a physical phenomenon which I have discovered, namely that in the steam space of a boiler only the water heated to the actual temperature of the steam can flow downward through a funnel.

According to the invention the tank which collects the water heated to the live steam temperature runs out into a tube which is led outward through the boiler shell and is introduced by way of a pipe into the lower part of the water space in the boiler.

Then the feed-water heating apparatus is made in the above described manner it can be subjected to a proper and reliable check under all circumstances by means of a gage glass connected either to the outer pipe and to the tank or because only the water heated to the actual temperature of the steam can flow downward through the funnel and be supplied to the desired part of the water space, while when colder water is used the condensation of the steam is continued and the pressure in the tank is reduced below that in the remaining part of the boiler and consequently the wateris compelled to flow from below upward into the tank. Under these circumstances the water-gage acts also as a thermometer. The tapering of the tank, which is equivalent to providing a resistance for the flowing water, in combination with the varying pressure over the preheated water in the tank is constantly instrumental in raising and lowering to a greater or less amount the water-level indicated by the gage whenever water is fed into the boiler, that is to say in keeping the water-level periodically fluctuating, this being a necessary condition for every reliably operating checking apparatus.

To these ends, the invention consists in the construction, arrangement and combination of parts described hereinafter and pointed out in the claim.

One illustrative embodiment of the invention is diagrammatically represented by way of example in the accompanying drawing, wherein Figure 1 is a side elevation, partly in section, showing one form of the invention,

7 Fig. 2 is a cross-section taken through the boiler, and

Fig. 3 1s a device. Referring to Figs. 1 to 3, a tank M having the shape of a tobacco pipe is mounted in the upper part of the boiler K, the lower tubular part M dipping into the water and the upper open bowl part projecting out of the water. The tubular part is led outside the boiler shell at a suitable place 1, where it is connected to a pipe L which is led through the shell at a second place 2 into the water space and terminates at 3. (Fig. 1.)

A suitable number of spraying nozzles e are provided on the end of the feed pipe a, b, in the open bowl part of the tank M, and these nozzles atomize the water supplied under pressure from the feeding device P and throw it against the top of the boiler, against which it impacts and falls into the tank M, as indicated by the dotted lines of Figs. 1 and 2, flows through the tubular part M the pipe L connected thereto and thus arrives at the desired part of the water space in the boiler. The mouths of the nozzles are so arranged that all the sprayed and impacting water falls back into the tank M, to which end ribs 5 (Fig. 2) may be provided on the top wall of the boiler if desired. The sprayed feed water is heated by top plan view of the spraying the steam in the boiler and only when it has of the steam it is impossible for it to flow along the described path, because as long as the water is colder than the steam the condensation of the latter will continue and the pressure in the tank M will be lower than in the remainder of the boiler, so that the water instead of flowing downward will tend to be forced upward along the described path, but in the reverse direction, from the lower part of the water space.

Means are provided for observing the working of the apparatus so as to afford a check on the proper working thereof. A horizontal pipe 9 disposed above the water line of the boiler is connected at its inner end with the interior of the bowl M above the normal water line thereof. This pipe extends without thev boiler and a vertical pipe 7 constituting a water gage is connected at its upper end with the outer end of said pipe 9 and at its lower end with the pipe L which is connected with the tube M. The position of the water in the gage shows at once whether the apparatus is working correctly, this being the case when its level is approximately the same as that of the water in the boiler. On the contrary, if the apparatus breaks down, say in consequence of the feed-water heating too slowly owing to insufficient steam reaching the atomizing space or owing to the tubular passage M, L being stopped up, the waterlevel will be temporarily or permanently very high or the gage glass will be quite filled.

The water heated to the temperature of the steam parts with more or less of its constituents adapted to 1 form boiler scale, mostly bicarbonate compounds, according in each case to the nature of the water and to the height of the working pressure of the boiler. The carbonates, air and other gases which are liberated are commingled with and carried away by the steam escaping to the place where it is used, so that they are prevented from entering into the water space in the boiler.

I claim The combination of a steam boiler, a tank disposed therein and comprising an open bowl projecting above the normal water line into the steam space and an inclined tube connected with the lower part of said bowl and extending below said water line through the shell of the boiler to the exterior thereof, a pipe connected with the projected end of said tube, extending downward and discharging into the water space of the boiler, a feed water supply pipe, a sprayer disposed in said open bowl, connected with said supply pipe and comprising upward spraying nozzles operative to project the feed water into contact with the steam of the steam space, said bowl being operative to catch the returned sprayed feed water and condensed steam commingled therewith and hold it under the reduced pressure due to the steam condensation until it attains the temperature of the steam, a pipe connected with said bowl above the normal water level thereof and extended to the exterior of the boiler, and a water gage connected with the first and last named pipes for determining the water level within the bowl.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

IGNAC PIOTR- IVINER.

lVitnesses VVADYSLAW KosKoRL, WADYSLAW MoJ owsKI.

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