US1710652A - Boiler-feeding apparatus - Google Patents

Description

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April 23, 1929.

fa wlff Patented Apr. 23, 1929.

UNITED STATES PATENT OFFICE.

BOILER-FEEDIN G APPARATUS.

Application filed February 27, 1922. Serial No. 539,427.

This invention relates I ing apparatus for steam boilers of the general type covered by the Alexander Patent No. 1,240,804 of September 25,1917 and described in greater detail in our pendlng application Serial No. 491,644, filed October 11, 1921. no or more geyser tubes may be cast integral with or formed within the fire box section of theboiler so as to automatically supply water to the upper heating surfaces or steamchambers of the boiler under operating conditions when the water flows over these plates in thin sheets or-streams'so that it can be evaporated under efiicient conditions. With this type of boiler comparatively little water space is provided within the boiler and it is advantageous to have an equalizing watertank of considerable ca? pacity mounted adjacent or around the boiler at about the normal water line thereof so as to furnish considerable additional water space. It is also of decided advantage to have a feed tank in which the drip return is received from the heating system and a connected feed pipe which preferably has a restricted inlet in the feed tank is adapted to feed this drip return water in a substantially continuous manner into one or more of the upper steam chambers of the boiler while in case of a sudden influx thereof into the feed tank an equalizing connection, preferably at a somewhat higher level in the feed tank may conduct this surplus water into lbe equalizing tank below. This equalizing tank, which may have any suitable shape and ample size for the particular boiler with which it is to be connected, may effectively serve as a settling tank since the drip return from the radiators or other devices using the steam ma 1 be led into one side or end of the equalizing tank which may have separating ribs extending up more or less from its bottom so as to form a series of settling or separating sections or chambers in which rust or other sediment collects near the drip return. The water supply connection for the boiler may be taken out of this equalizing tank adjacent the other end so that at least considerable sediment and impurities may be removed from the water before it is returned to the boiler. It is also advantageous in many cases to mount, in the general way disclosed in our copending especially to feedapplication, Serial No. 520,005 of December I ,Figure 2 is an enlarged vertical section showing the} boiler feeding apparatus.

' is a top view.

The boiler! of this Alexander type may be of any suitable construction and may either e a vertical or- 'roundsection boiler as indicated or a sectional boiler, if desired. fire box section 1 is shown as being of water jacket construction so as to form a water space or water jacket 2 around the fire and a suit-able geyser device may be installed adjacent the upper part of the fire box and may comprise water legs 23 cast with the fire box section and connected tube 24 through which water automatically under operating conditions to the upper steam chamber 5. The water may then flow over a series of enclosed ribbed surfaces forming tortuous channels for the water which finally passes down through nipples or connections into the lower steam chamber 4 connected with the water jacket below by various nipples or connections 23. The steam which is generated under efficient conditions in these steam chambers heated by the hot gases finally escaping through the smoke connection 6, is led off through suitable steam supply pipes such as 26 connected to the radiators or other steam utilizing devices operated by the boiler. The condensed water from the steam radiators or other devices in which the steam is used returns through suitable drip returns or pipes such as 31, for example, to which may be connected the feed tank 30 of cast iron or other suitable material and having any desired size and shape. This tank preferably has one or more separating partitions 32 formed on its bottom between the rear portion where the drip return 31 enters and the forward portion of this feed tank 'where the tank. Thisfeed pipe may portion such as at the "lower end 38 of the main feed pipe section 37 which may project into a priming recess 39 formed as'i-ndicated in the upper steam chamber '5 adje cent the guiding partitions 40." Sufiicient water is thus normally held in this recess so as to form a: water seal 'for the teed pipe and substantially-prevent entrance of steam cleanout plug such as into the pipe which is desirable forsome purposes. It is also-desirable to have a 36 deta-chably arranged in a T or coupling in the feed pipe so that by, removing this plug'the inlet opening can be cleared orinspe'cted' when necessary and the continued-operation of the feed pipe ensured. y 1

In some cases as where water collects in the steam radiators large amounts of water are occasionally fed down the drip return pipe and under-these conditionsit is preferable to discharge such surplus water or remove it from 'the feed tank so that a more constant feed of water-can be main tained through the feed pipe to the upper heating surfaces ot'the boiler. For this purpose an equalizing connection such as 8 may be arranged in the feed tank and may have a relativelylarge inlet opening 33 preferably arranged somewhat above the feed pipe inlet so that under such sudden flooding or feeding of water to the feed tank it may be quickly removed therefrom by this equalizing connection as soon as the water level in the feed tank rises above the equalizing inlet 33. This equalizing connection which may convey the drip return water in any desired way to the water space of the boiler preierabl connects with an equalizing tank such as 11 having considerable capacity and located at about the normal or static water line of the boiler. As indicated in Figs. 1 and 3 this equalizing tank may be of curved form and more or less embracing the boiler and supported therefrom and connected thereto as through suitable nipple or pipe connections such as 7, 27 and the water supply connection 21 communicating with the water space at the lower part of the boiler. This equalizing tank which may have a gauge glass 16 mounted on the dome 9 to which the equalizing pipe is connected through the T connection 15 may have in some cases a series of separating partitions or ribs 22 extending upward from the bottom of the tank so as to catch and retain the sediment and dirt which areoften carried into theequalizing tank in considerable amounts by -the sudden flooding of water into indicated. This sediment may be removed 'from time to time through 'the'valved drain pipe 20 and the removable end plated? may also be taken oil and the entire equalizing tank scrapedor hosed out occasionally for cleaning purposes. By having the water supply pipe 'or connection 21 arranged at the oppositeend 19 of the equalizing tank from the; equalizin connection 8 "therewith, this sedimei1t"is, 0 course,- caughtand deposited in the intermediatiefpo'rtions of the equalizing-tank and is removed-toe corresponding extent "from the water which is supplied to the boiler through 'the 'pipe 21'. If desired, waterheating eoits -or pipes 44 may be mounted withinthi s equalizing tank as shown in Figuresfiand 3,s0 as=to heat water for domestic purp'o'ses for when proper-eonnection -is made-with the prGj'ectin'g-'pot=tions"-43 of these pipes."

While we have shown and described a certain preferred embodiment of the inventiomitiwill be understood that thisi'is primarily for the purpose ofi'llustrating the principlesofthe invention, and'that many modifications and changes maybe made in the details of construction without-departing from the spirt or iscop'e' of the inventioni Therefore, we do not desire to be understood-as limiting ourselves except as required by the'fo'llowing claims when construed in the light ofthe pniorart.

"We claims" 1-. The steam boiler'eomprising a Water jacket firebox section, one or more superimposed steam chambers having heating surfaces arranged above said fire box section and a geyser device connected to said fire box section and automatically supplying water therefrom to the upper heating suraces in said steam chambers under operating conditions, an equalizing tank arranged adj acent said fire box section at about the normal water level therein and having a water supply connection with the water space at the lower part of the boiler, a feed tank to be connected to the drip return of the boiler,a feed pipe having an inlet in the lower part of said feed tank, a clcanoutplug in said feedpipe to clear its inlet and a Water seal recessin the upper stream chamber of the boiler with which the depending end of said feed pipe communicates to feed the drip return water to the upper heating surfaces of said boiler, and an equalizing connection communicating with said equalizing tank and having a relatively large inlet end in said teed tank at a higher lever than the feed pipe inlet therein.

*2. The steam boiler cor prising a water jacketfire box section, one or more superimposed steam chambers having heating surthe same as above,

example,

faces arranged above said fire box. section and a -geyser device connected a to said fire box 1 section and automatically supplying watertherefrom to theupper heating surfaces insaid steam chambers under operating.conditions,-a feed tankto beconnected to the drip return .of the boiler,-a feed pipe having an inlet inthe lower part of said feed tank, and a water seal recess in the upper steam chamber of the boiler with which the dependin end of said feed ,pipe communicates to fieed-the drip return water to the upper-heating surfaces of said boiler, and an equalizing connection communicating with alower, water space of the boilerand havinga.relatively'large .inlet end in aid feed tank at a higherlevel than the feed pipe inlet therein.

3. The steam boiler comprising a fire box section, one or more superimposed steam chambers aranged above said fire box section and a geyser device connected to said fire box section and automatically supplying water therefrom to the upper heating surfaces in said steam chambers under operating conditions, a feed tank to be connected to the drip return of the boiler and having a separting partition, a feed pipe having a water seal device and an inlet in the lower part of said feed tank on the other sideof said partition from the drip return connection to feed the drip return water to the upper heating surfaces of said boiler and maintain a water seal in said feed pipe, and an equalizing connection communicating with the water space at the lower part of the boiler and having a relatively large inlet end in said feed tank at a higher level than the feed pipe inlet therein.

4. The steam boiler comprising a fire box section, one or more superimposed steam chambers arranged above said fire box section and a geyser device connected to said iii-e box section and automatically supplying water therefrom to the upper heating surfaces in said steam chambers under operat ing conditions, a feed tank to be connected to the drip return of the boiler and a feed pipe having a water seal device and an inlet in said feed tank to feed the drip return to the upper heating surfaces of said boiler and maintain a water seal in said feed pipe, and an equalizing connection communciating with the water space at the lower part of the boiler and having a relatively large inlet end in said feed tank.

5. The steam boiler comprising a fire box section, one or more superimposed steam chambers arranged above said fire box section and a geyser device connected to said fire box section and automatically supplying water therefrom to the upper heating surfaces in said steam chambers under operating conditions, a feed tank to be connected to the drip return of the boiler and a feed pipe having an inlet in said feed tank to feed'the driplreturn water to the upper heating-surfaces of said boiler, and an equalizing con nection communicating with thewater space at they lower part of the boiler and having a relatively large ,inlet end'in'said feed tank.

6. A steam boiler comprising a fire. box, a water chamber, oneor morev superimposed steam generating surfaces. arranged above said firebox, means for feeding water from said-water chamber to said steam generating surfaces, a drip return water feed tank, a feed pipe having a small inletin said tank for delivering water-from said feed tank to saidsteam generating surfaces, and an equal izing-iconnection having a relatively large inlet in said feed tank-at a higher-level than the feed, pipe inlettherein and communicating with said waterchamber of the boiler;

7;.-The-;feeding apparatus for a steam boiler having a lower fire box water space and upper heating surfaces receiving water therefrom, comprising a feed tank to be connected to the drip return of the boiler, a feed; pipe having an inlet in the lower part of said feed tank and a water seal recess adjacent the upper heating surfaces of the boiler with which the depending end of said feed pipe communicates to feed the drip return water directly to said upper heating surfaces and maintain a water seal at the discharge end of said feed pipe and an equalizing connection having a relatively large inlet end in said feed tank at a higher level than the feed pipe inlet therein and communicating with a lower water space of the boiler.

8. The feeding apparatus for a steam boiler having a lower fire box water space and upper heating surfaces receiving water therefrom, comprising a feed pipe to be connected to the drip return of the boiler to feed the drip return water directly to said upper heating surfaces and a relatively large capacity en'iergency connection delivering drip return water to said lower fire box water space without passing through said feed pipe.

9. A steam boiler comprising a fire box, a water chamber, one or more superimposed steam generating surfaces arranged above said fire box, means for feeding water from said water chamber to said steam generating surfaces, a drip return water feed tank, a feed pipe having a small inlet in said tank for delivering water from said feed tank to said steam generating surfaces, an equalizing tank arranged adjacent the boiler and having a connection with a relatively large inlet in said feed tank at a higher elevation than said feed pipe inlet therein to receive water from said feed tank, and a connection between said equalizing tank and said water chamber of said boiler.

10. The combination with a steam boiler having small water capacity and a steam generating surface above the water level, of a drip return water feed tank, a feed pipe for delivering water from said feed tank to said steam generating surface, a relatively large equalizing tank partially surrounding said boiler closely adjacent thereto to receive heat therefrom, said tank being horizontally disposed at the normal water level of the boiler, a boiler drip return conneetion leading from said feed tank to one end of said equalizing tank, a connection adjacent the other end of said equalizing tank to supply water therefrom to the boiler, and heating coil pipes within said equalizing tank for heating water passing through said pipes for domestic purposes.

' 11. A steam boiler equalizing and water heating tank, adapted for use with a steam boiler having relatively small water capacity, comprising an equalizing tank adapted to partially surround and be arranged closely adjacent the fire box seetion of the boiler at the normal water level thereof and having adjacent one end a boiler drip return connection, a water supply connection adjacent the other end of said equalizing tank to supply water to said boiler, a series of separating ribsextending upward from the bottom of said equalizing tank to form a series of separating compartments in said tank and promote the separation of sediment in the sections of said tank adjacent said drip-return, and heating coil pipes arranged within said equalizing tank and adapted to heat Water passing through said pipes for domestic purposes.

CARL z. ALEXANDER. EARL s. ALEXANDER.

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