US2100682A - Cinder and ash remover - Google Patents

Description

Nov. 30, 1937. R. BEERS CINDER AND ASH REMOVER Filed July l, 1935 2 Sheets-Sheet l 1.1.! au. x

INVENTQR ROYCE L.BEERS um), ATTOR EY,S

Nov. 30, 193 7.

R. LABEL-:Rs

CINDER AND ASH REMOVER Filed July l, 1955 2 Sheets-Sheet 2 NVENTOR ROYCE L. BEERS l LA), h?"

Patented Nov. 30, 1937 UNITED STATES ATENT QiflCE CINDER AND ASH REMOVER poration of Michigan Application July 1, 1935, Serial No. 29,410

4 Claims.`

The invention relates to cinder and ash removers more particularly designed for use in connection with boiler settings for tubular type boilers, or steam generators. It is the object of the invention to obtain a construction adapted for use with various constructions of boilers of this type and without alteration in the settings or restriction to the free flow of gases therethrough in the desired direction. To this end the invention consists in the construction as hereinafter set forth.

In the drawings:

Fig. 1 is a vertical section through one construction of boiler setting to which my improvement is applied;

Fig. 2 is an enlarged sectional elevation showing the cinder and ash remover as attached to the tubular boiler;

Fig. 3 is an elevation at right angles to Fig. 2.

One type of steam generators in general use comprises a plurality of drums connected by banks of tubes which are exposed to the hot gases of combustion. The tubes of each bank adjacent to the drums extend radially therefrom but are then curved so as to extend in parallelism to another drum where they are again bent in radial relation thereto. The combustion gases are directed so as to pass alternately upward and downward in relation to the several banks of tubes by means of baffles suitably placed, and the structure is so designed as to produce the highest heating efficiency without unduly restricting or obstructing the flow of gases to the stack. Heretofore cnder and ash removers have been used in connection with steam generators of this type, but these have been separate from the tubular boiler and have required some modification in the setting or the arrangement of the baffles to accommodate the same. With the present construction the remover is attached directly to the tubular boiler and requires no modification in the setting therefor.

In detail and as shown in Fig. l, A is the combustion chamber of a furnace directly above the grates B. C is a lower drum of a tubular boiler having several banks of tubes D, E and F lead,- ing to upper drums G- and H which are also cross connected by tubes I and I'. The gases from the combustion chamber pass upward through the bank D and a portion of the bank E and then pass over a bale wall J which extends downward to the drum C. This compels the downward movement of the gases past another portion of the bank E and beneath baffles K and K', after which they again pass upward through the bank F and to the stack ue L. With this speciic construction preferably arrange the cinder and ash remover at Vthe point where the downwardly flowing gases turn to pass upward to the stack. Thus as shown, the separator is arranged in an oblique plane extending from the lower end of the barile K across the bank of tubes F in rear of the drum C and so that the separated ash and cinders will drop to a hopper M below and in rear of said drum. This separator comprises a series of plates N extending completely across the boiler setting and arranged intermediate the tubes. These plates are arranged substantially at right angles to the direction of flow of gases on the forward side thereof and at the point of change in direction from downward to up ward flow. The spaces between adjacent plates which are on opposite sides of the intervening tubes permit the upward flow of gases and the total area of these openings is substantially equal to the cross section of the upwardly moving column of gas passing to the stack. Thus very little if any restriction is imposed on the flow of gases but because of the abrupt change in direction the solid particles held in suspension will impinge against the plates which arrest movement of the same and will then drop into the hopper M.

To hold the plates N in the position just described they are attached to obliquely extending supporting plates O and P. The plates O are of a saw-tooth form, being provided with a series of flanged steps O' to which the plates N are directly connected. The plates O are secured in position by suitable means, such as U-bolts Q, and there are a sufficient number distributed across the setting to afford proper support for the plates N and to hold the same from warping or changing position. The plates P extend across the space between the baffle K and bank of tubes F, and support plates N similar to the plates N but arranged between the banks E and F. Between the rearmost tube of the bank F and the rear wall of the setting, is a baille plate R which is clipped to said tube and compels the gases to pass upward between the tubes of the bank.

The construction as above described will very effectively remove the solid particles carried in suspension by the gases and as above stated, without materially restricting the freedom of flow. The fact that the separator is located at the point where a change in direction of flow would naturally occur in the setting, takes advantage of this change in separating the solid particles by their own inertia. Also the separator plates assist in changing the direction of the gases while arresting the movement of the solid particles so as to permit them to fall into the receiving hopper below.

While I have described only one specific construction o tubular boiler or steam generator, it is obvious that my improvement is applicable to other constructions diering in detail but of the same general type.

What I claim as my invention is:

1. The combination with a tubular boiler and a setting therefor including a bank of tubes arranged in spaced rows and a baiiie for directing the hot gases in a downward direction into said bank and thence upward through said bank, of a cinder and ash separator comprising a series of plates arranged between adjacent rows of tubes and spaced apart for passage of gases therebetween and together forming a downward continuation of said baiiie across the bank whereby the cinders are directed downward and the hot gases pass upward through the spaces between the plates and tubes in each row.

2. The combination with a tubular boiler and a setting therefor including a bank of tubes arranged in spaced rows and a baiiie for directing the hot gases n a downward direction into said bank and thence upward through said bank, of a cinder and ash separator comprising a series of plates arranged between adjacent rows of tubes and spaced apart for passage of gases therebetween and together forming a downward continuation of said baiiie across the bank whereby the cinders are directed downward and the hot gases pass upward through the spaces between the plates and tubes in each row.

3. The combination with a tubular boiler and a setting therefor including a bank of tubes arranged in spaced rows and curved to change from a lateral to an upward direction, of a baile for directing the hot gases downward and into the curved portion of the bank, and a cinder and ash separator comprising a series of plates arranged between adjacent rows of tubes and spaced apart for passage of gases therebetween and together forming a continuation of said bafe across the curved portion of the tubes whereby the cinders pass downward through the bank and the hot gases pass upward through the spaces betweenthe plates and tubes in each row.

4. The combination with a tubular boiler and a setting therefor including a bank of tubes arranged in spaced rows and curved to change from a lateral to an upward direction, of a baiile for directing hot gases downward into the laterally extending portion of said bank and thence up-V ROYCE L. BEERS.

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