US245776A - Feed-water heater and purifier - Google Patents

Description

(No Model.)

B. BRAZELLE.

FEED WATER. HEATER AND PURIPIER.

` No. 245,776. Patented Aug. 16,1881.

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N. FEYERS. Phuwumognpmr, wnmngmn, r24 C.

UNITED STATES PATENT OEEIcEO BENJAMIN BRAZELLE, OF ST. LOUIS, MISSOURI.

FEED-WATER HEATER AND PURIFIER.

SPECIFICATION forming part of Letters Patent No. 245,776, dated August 16, 1881. l

Application filed May 7, 1381. (No model.)

To all whom 'it may concern Be it known that I, BENJAMIN BRAZELLE, of St. Louis, in the county of St. Louis and State of Missouri, have invented certain new and useful Improvements in Feed-Water Heaters and Purifiers, of which improvements the following is a specification.

The object of my invention is to provide simple and effective means for imparting a high degree of heat to and thoroughly removing saline and other impurities from feed-water prior to supplying it to a steam-generator; to which end my improvements consist in the combination of a vertical heater-chamber, a water-supply pipe communicating therewith at top, a steam-supply pipe opening thereinto below the water-supply pipe, a partition or diaphragm extending across the chamber below the steam-suppl y openin g, and having a depositing-tube establishingcommunication between the space above the diaphragm and the lower portion of the heater-chamber, and a deliverypipe connected to the chamber above the lower opening of the depositing-tube.

The improvements claimed are hereinafter more fully set forth.

The accompanying drawing is avertical centra/l/ section through a feed-water heater and purier embodying my improvements, showing the application thereof to a steam-generator.

The heatingand purifying chamber A, which is, by preference, of cylindrical form, is made of cast or wrought metal of sufficient strength to sustain the pressure of steam carried in the generator F, and may be either mounted vertically upon a proper base or pedestal, A', by which it can be secured to a door or foundation, or hung vertically upon a wall or post or the side of the generator, as convenience prescribes. The upper end of the chamber A is closed by a tight cap or cover, A2, to which is connected a water-supply pipe, B, communieating lwith the feed-pump, the water being delivered to the chamber in a series of nc jets by a perforated conical sprayer, B', fitted to the chamber or to the cap A2, below the deliveryopening of the water-supply pipe. A steamsupply pipe, C, leading from the steam-space of the generator, is connected to the chamber A adjacent to the sprayer B', so that the entering currents of steam mayimpinge upon and impart heat directly to the jets of feed-'water issuing from the sprayer, and a diaphragm or partition, D, extends across the chamber A, below the opening of the steam-pipe O. In the instance shown saturated steam taken directly from one of the steam-chambers of the generator is employed; but where a higher degree of heat is advisable or desirable the supplypipe O receives its steam from a superheater of any approved construction, a simple form of which consists ot' a coil of pipe located in the smoke-box and having its ends communieating respectively with the steam-space and with the supply-pipe O. The diaphragm D divides the chamber A into two compartments, the only communication between which is through a depositing-tube, D', extending from the diaphragm to a point within the lower compartment below its horizontal center, so that the water which it delivers from the upper to the lower compartment enters the latter nearer to its lower than to its upper end. A Water-delivery pipe, E, is connected to the lower compartment of the chamber A at a point therein above the lower opening of the depositing-tube D', and serves to conduct the heated and purified feed-water to the waterspace of the steam-generator at any desired point.

The steam-supply pipe O and water-delivery pipe E may be furnished with suitable stop and check valves,respectively, so that communication between the heater and generator may be closed when desired. A blow-off cock, A3, is fitted to the chamber A adjacent to its lower end, for the purpose of enabling the chamber to be cleared of the deposited impurities by blowing off the same from time to time, as required.

In the operation of my improvements the feed-water enters the upper compartment of the heater-chamber A, through the pipe B and sprayer B,in fine jets, which are heated by the direct contact of the live steam entering by the supply-pipe C, and necessarily to a much higher degree than is practicable where exhaust-steam is employed, as usually, for the purpose, with acorrespondin g advantagein the separation of the contained foreign matters. The hea ted feed-water passes down the depositing-tube D', by which it is conducted to the lower portion ofthe chamber, and the separated impurities settle to the bottom,where they are not subject to any tendency to circulation and consequent liability to be drawn with the heated feed-water into the generator, the opening of the delivery-pipe E being above the discharging Aend of the tube D', and the supply through said pipe being drawn from the upper portion of the compartment, and at a point above that at which the foreign matters are deposited.

' My improvements can be applied at compal" atively slight cost of construction and maintenance, and within a limited compass, and will be found of special value where the percentage of earthy and saline constituents contained in the feed-Water used is so great as to prevent their thorough separation by the effect of the heat obtainable from exhaust-steam.

I claim as my invention and desire to secure 2o

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