US1822405A - Water wall - Google Patents

Description

SephS, 1931. G. P. JACKSON WATER WALL Filed June 28, 1930 2 Sheets-Sheet l INVENTOR BY 1M ATTORNEYS Sept. 8, 1931. G. P. JACKSON WATER WALL Filed June 2 1930 2 Sheets-Sheet 2 INVENTOR ATTORKEY! Patented Sept. d, i931 GEORGE 1. JACKSON, 0F FLUSHING, NEW YORK, ASSIGNOR TO -BUSTION ENGINEERING CORPORATION.

DELAWARE INTERNATIONAL COM- OF NEW YORK, N. Y., A CORPORATION OF WATER WALL Application filed June 28,

This invention relates to improvements in water walls for boiler installations and particularly to water Walls for stoker fired installations.

The primary object of my invention is to. provide water walls which are adapted to efiectively protect the side Wall portions of combustion chambers adjacent. to the stoker, and which are readily associated with the Stoker.

How the foregoing, together with such other objects and advantages as may hereinafter appear, or are incident to my invention, are realized, is illustrated in preferred form in the accompanying drawings where- Fig. 1 is a vertical section through an installation embodyingmy invention with the upper portion and the stoker illustrated more or less diagrammatically;

Fig. 2 is an enlarged cross section through my improved water wall and showing its downtake connection to the boiler, the section being taken on the line 22 of Fig. 1

Fig. 3 is an end view of my improved water wall, as it would appear when looking toward the left in Fig. 1 with the adjacent parts removed;

Fig. 4 is a plan view of the water wall; and

Fig. 5 is a fragmentary face view of a portion of the wall with part of the header broken away to show its interior construction.

The installation comprises in general a combustion chamber A in which the fuel is burned, a stoker B of any well known type, a boiler C associated with the combustion chamber, a water wall D defining the rear portion of the combustion space, and side water walls E now to be fully described.

The water walls E are located in the lower portion of the combustion chamber at the sides of and adjacent to the stoker B. Each water wall E comprises a row of substantially horizontally rdisposed water tubes 6, an upright downtake header 7 into which the tubes of said row are connected at one end, and an upright uptake header 8 into which the tubes are connected. at their other ends.

In this instance I have shown each row 1930. Serial No. 464,446.

oftubes 6 as composed of seven tubes in height, with the tubes spaced sufiiciently apart, if desired, to provide room for the employment of longitudinally extending fins 9, which may substantially abut so as to provide in effect a continuous metallic wall extending upwardly a sufficient distance to protect the refractory side wall portions of the combustion space immediately in the region of the hot flame from the intense heat thereof. The tubes are preferably inclined from the horizontal an amount corresponding to the inclination of the stoker B, as such an arrangement is one which is best calculated for application to a stoker fired installation. The lower ends of the tubes connect into the header 7 and the upper ends into the header 8. I prefer to bend the upper end portions of the tubes as indicated at 10 in Figs. 3 and 4 for connection into the header 8. Cleanout plugs 11 are provided in the header in alignment with the tubes for giving access to the tubes.

The downtake header 7 of each row receives water fromthe boiler C by means of a plurality of downcomer tubes 12 leading from the lower or mud drum 13 of the boiler to the header. The uptake header 8 of each row is connected to the water space of the upper steam and water drum 14 of the boiler by means of a plurality of upcomer tubes 15, 16 and 17 leading from the header to the drum.

The headers 8 are divided into a plurality of compartments 18, 19 and 20, one located above the other by means of division walls 21. In this instance the walls are so disposed that three tubes deliver into the compartment 18, two into compartment 19 and two into compartment 20. Thus it will be seen that each compartment receives the delivery of different tubes, i. e., the lower tubes deliver into the lower compartment, the upper tubes deliver into the upper compartment, and the intermediate tubes deliver into the intermediate compartment. Each of these compartments is provided with a separate upcomer tube leading to the boiler and as here shown the upcomer tube 15 is connected into compartment 18, 16 into 19 and 17 into 20 at the upper portions respectively thereof. T he upcomer tubes are connected into the header at points removed from the clean-out plugs 11 as clearly shown in Fig. 4.

From the foregoing it will be seen that I have provided an improved \vater wall which is especially useful in stokcr tired installations The refractory side wall portions of the combustion chamber adjacent to the stoker are protected from the intense heat and the tubes of the cooling walls E are prevented from burning out and this for the reason that steam developing in the upper tubes is carried directly oil to the boiler thus giving definite circulation. In this connection it is pointed out that practically nothing but steam would be carried therein, in the absence of provision to the contrary, and burning out of such tubes would occur. The :ame condition would be experienced in the intermediate tubes but to a lesser extent.

Through the practice of my invention a definite circulation is maintained through the several groups of tubes and steam is drawn otl' separately t'llGlt-fl'OlIl, which in sures that water will circulate in a sufficient amount to prevent burning out of the tubes. In other words. the arrangement insures of there being a mixture of steam and water in the tubes with an amount of water sufficient to prevent burning of the tubes. The advantage of the arrangement will be understood when it is realized that the side wall protecting tubes are practically uniformly subjected o intense heat, largely radiant heat, so that stagnation in any portion of the groups of tubes would result in the burning of the tubes hereinbefore described.

I claim:

1. In combination, a boiler, a combustion chamber, a stoker, a tubular water wall located in the combustion chamber and adjacent to the Stoker, said water wall comprising a row of substantially horizontal water tubes, upright headers into which the ends of said tubes are connected, and means for dividing one of said headers into a plurality of compartments one above the other, into each of which tubes of the water wall are connected, upcomer means connecting each of said compartments to the boiler, and downcomer means connecting the other header to the boiler.

2. In combination, a boiler, a combustion chamber, a stoker, a row of tubes inclined header into which said tubes are connected at their lower ends, an upright header into which said tubes are connected at their uppcr ends, means dividing said last mentioned header into a plurality of compartments one located above the other, into each of which different tubes of the row are connected, downcomer means connecting the first mentioned header to the boiler, and upcomer, means connecting each compartment of the second mentioned header to the boiler.

3. In combination, a boiler, a combustion. chamber, a stolter, a row of substantially horizontally disposed boiler tubes located in the combustion chamber at one side of and adjacent to the stoker, a Water supply header into which said tubes are connected at one end, downcomer means for supplying water to said header from the boiler, a header into which the other ends of said tubes are connected for delivery thcreinto, means dividing said last mentioned header into a plurality of compartments each receiving the delivery from different tubes of said row, and upcomer means connecting each compartment to the boiler.

4. In combination, a boiler, a combustion chamber, a stoker, a row of substantially horizontally disposed boiler tubes located in the combustion chamber at one side of and adjacent to the stolter, a Water supply header into which said tubes are connected at one end, downcomer means for supplying water to said header from the boiler, a header into which the other ends of said tubes are connected for delivery thcreinto, means dividing said last mentioned header into a plurality of compartments each receiving the delivery from ditl'crent tubes of said row, and. upcomer means connecting each compartment to the boiler, and clean-out plugs in said second mentioned header aligned with the boiler tubes, said upcomer means being connected into said header at points removed from said clean-out plugs.

5. In combination a boiler, a combustion chamber, rows of substantially horizontal boiler tubes defining a portion of the combustion space in the region of firing, headers into which the ends of the tubes of said rows are connected. downcomer means connecting the headers at one end of the rows to the boiler, upcomer means connecting the headers at the other end of the rows to the boiler, and means dividing the headers to which the upcomer means are connected into a plurality of compartments, said upcomer means being arranged to provide each compartment with an upcomer connection.

In witness whereof, I have hereunto signed my name.

GEORGE P. JACKSON.

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