US415303A - Steam-boiler - Google Patents

Description

(No Model.)

J. P. SIMMONS. STEAM BOILER. No. 415,303. Patented Nov. 19, 1889.

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JOHN P. SIMMONS, ()F LOS ANGELES, CALIFORNIA.

STEAM-BOILER.

S?ECIFICATION forming part of Letters Patent No. 415,303, dated November 19, 1889.

Application filed April 24, 1889- Serial No. 308,496. (No model.)

To all whom it may concern.-

Be it known that I, JOHN P. SIMMONS, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Improvement in Sectional Steam-Boilers, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

Figure 1 represents a central vertical section of my improved boiler with its furnace set in masonry. Fig. 2 represents segmental shelves for the collection and removal of sediment and scale. Fig. 3 represents the upper end of the centrally-arranged Water-circulating tube, with its flange and the open diaphragm to which it is connected at the top. Fig. 4 represents the removable interior radial circulating-tubes, and Fig. 5 represents one of the three sections of the same detached.

The primary objects of my present invention are to provide means which will more effectively promote the circulation of the water in steam-boilers and for separating and removing sediment and scale from the boiler.

My improvements relate to and are combined with boilers of that class denominated the porcupine or sectional boilers. The lower end of the boiler A is set down in the furnace B, provided with grate-bars 0c and doors, in the usual manner, and has connected to and radiating from it tubes D, closed at their outer ends, but open and communicating with it at their connected inner ends.

- These tubes, which constitute a portion of the water-space of the boiler, stand out laterally in the combustion-chamber of the furnace, which surrounds the boiler, and receive the more intense heat generated by theburning fuel.

lVithin tubes D, I have applied watercirculating tubes N, formed in three segmental sections, with radiating flanges a, bolted together, as shown in Fig. 4.. Their outer ends are undulating or scalloped to allow the 'water to circulate within and between them and the radiating tubes D, and their inner ends project into the boiler A to such an extent as to accelerate the circulation of the Water, which, being heated to a higher degree within the annular space between the removable circulating water-tubes N and tubes D, will pass out into boiler A, and the less-heated water in the latter will pass into the removable tubes N, and thus a continuous circulation will be enforced by the unequally-heated water.

Diaphragm K, connected to the interior of boilerA, has a circularopening K, equal to twothirds of its diameter, and the annular plate 0, having a funnel S attached under it, is supported by several bolts P a short distance below the diaphragm K. The funnel S connects with the open upper end of the central circulating-pipe F, and the latter extends down nearly to the bottom of boiler A, and is provided with a deflecting-disk R, between which and the lower end of pipe F there is an open space, through which water introduced by pipe E to feed the boiler will pass from tube F laterally into the boiler A. The water thus introduced from outside through feed-pipe E commingles with heated water and descends through pipe F, thereby separating its impurities, and passes out laterally at the cir' cular opening above deflecting-plate R,while the heated water in boiler A continuously ascends, being subjected to greater heat, and will pass up between annular plate 0 and diaphragm K, and thence through and above said diaphragm.

The water-line, orsurface from which steam is evolved, is denoted by the dotted line 00 :r in Fig. 1.

The flanges a, formed upon the sections 1 2 3 of the interior pipe N, Will fit into the lateral pipes D and serve to divide any scale which forms upon the latter into three divisions, and when the tubes N are withdrawn from tubes D to be cleaned the scale deposited by the water upon the inner surfaces of tubes D may be more easily broken off and removed by reason thereof.

To prevent the inner tubes N from becoming immovably fastened to the tubes D by the scale deposited at each side of the flanges a, I have connected the flanges of the sections 1 2 3 by means of slots and removable bolts H at their inner ends only, (see Fig. 5,) so as to disconnect the sections at their projecting ends, and I have furnished each section with a lug 2', by which it may be withdrawn separately from the other sections.

The segmental shelves M M are connected by screwsto flanged collars 0 around pipe F, and may be removed to be cleaned from sediment and scale. These removable segments or shelves M M are arranged so that the two upper ones M are directly over the open spaces between the lower ones M and at such a distance apart as to form zigzag passages for the.

circulating Water, whereby they will serve more effectively to collect the impurities in the water, which impurities will more readily lodge upon and adhere to them than to the upright surface of boiler A.

The arrows 4L 5 6 7 indicate the circuit of the circulating water from the point of its entrance through feed-pipe E until it returns to the surface or steam and water line at 0am.

The space below the disk R at the bottom of pipe F serves as a receptacle for the heavier impurities of the water.

It should be observed that the central pipe F is removable, with its appendages, to be cleaned from all impurities which will become deposited upon them, and as the water which is introduced by pipe E mixes with the heated water and in its descent becomes heated to a high degree the impurities it may contain will be deposited mainly inside of said tube at the bottom of the boiler and upon the shelves M M around said pipe F.

W denotes the stea1n-exit pipe.

WVhen the water in boilers of this character is heated, that nearest the outside is caused to rise by the generating steam, and as it reaches the water-line it falls toward the center of the boiler and into the pipe F, down which it flows to supply the vacuum caused by the ascending water. The pipe F separates the descending water from the as cending water, and thereby induces a perfect circulation from top to bot-tom. ,WVithout this pipe the ascending and descending water mingle, thus preventing perfect circulation. The annular outwardly-projecting plate or flange O intercepts the ascending water nearthe tube, so that its current will not obstruct the downward flow of water into the mouth of the tube.

The flange is preferably arranged in relation to diaphragm K so as to form a lateral passage between them. The diaphragm K, arranged above flange O, prevents the water from rushing to the top of the boiler and directs it into the lateral passage between the two parts 0 and K. This prevents what is known as priming, as the ascending water is thereby caused to return down the pipe and cannot rise to enter the steam-pipe W.-

The deflecting-plate R at the bottom of the pipe F assists in the circulation by preventing the upwardly-flowing water from enter-' ing the bottom of pipe E, and also by deflecting the downwardly-flowing water and thereby causing an eddy around the lower end of the pipe, thereby precipitating the impurities which are in the water and allow ing the same to deposit and remain undisturbed upon thebottom of the boiler. Said pipeF will, however, operate to promote the circulation in the boiler if the flange O and deflecting-plate R be removed. The length of the pipe F may be varied; but such pipe should extend to near the bottom of the boiler and must not extend up to the water line.

The essential feature of the portion of my invention calculated to produce a proper circulation within the boiler proper is an open vertical pipe or tube centrally located within the boiler and extending from below the water-line to near the bottom of the boiler.

Having described my invention, I claim and desire to secure by Letters Patent 1. The central water-circulatin g pipe F, provided with annular flange C and funnel S at its top and lateral water passage-Ways at its bottom, in combination with the ingress water-pipe E and open diaphragm K, between which and annular flange 0 the water can circulate, as described.

2. The water-circulating pipe F, connected with the funnel S and annular flange or plate 0, in combination with open diaphragm K and segmental removable shelves M M, arranged to form indirect passageways between them, substantially as described.

3. The feed-water pipe E ,enterin g the boiler at the Water-line 00 00, with the dischargingorifice arranged centrally in the opening of diaphragm K, to accelerate circulation and commingle the hot and cold water, in combination with annular plate Oand pipe F, having lateral openings at its bottom, as specified.

4:. The sectional removable projecting tubes N, provided with radial flanges a, open slot H, and lugs 71, connected to their inner ends by removable bolts, as and for the purpose specified.

5. In a'steam-boiler substantially such as described, an open vertical pipe extending from below the water-line to near the bottom of the boiler, and provided at its top with an annular outwardly projecting flange arranged, as set forth, in a lower and upper plane,with lateral passages therebetween, the

lower section or plane of said flange being R and lateral openings.

JOHN P. SIMMONS.

Witnesses:

H. P. K. PEOK, M. O. GALER.

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