US1644286A

US1644286A - Soot-blower element

Info

Publication number: US1644286A
Application number: US506767A
Authority: US
Inventors: Norman L Snow
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-10-10
Filing date: 1921-10-10
Publication date: 1927-10-04
Anticipated expiration: 1944-10-04

Description

subject to high temperatures Patented Oct. 4, l

UNITED STATES PATENT OFFICE.

NORMAN L. SNOW,

' This invention rela of blower elements of soot-blowers.

OF HARTFORD, CONNECTICUT.

SOOT-BLOWER ELEMENT.

Application filed October 10, 1921.

tes to the construction These elements commonly consist of tubular headers or pipes provided with length, and they are arzlefsalong their ranged across or ad steam boilers 1n such be rotated to direct jets discharge nozacent to the tubes of manner that they may of steam admitted to the blower elementonto the boiler tubes ash to remove soot,

of the fuel combustion therefrom.

kindred products and I In the prior structures the header pipes are usually each provided with a single row of holes,

and nipple-like nozzles are screwed, headed or welded therein to Although such holes direct the steam jets. and their individual nozzles occasionally occur at diametrically opposite points, connection but are cleamng purposes.

they have no structural so located for particular Blower elements, being by the flames andgases of combustion from the furnace,

are liable to warp,

twist and deteriorate in such, manner that they cannot be easily rotated, and. sothatth e nozzles are loosened and drop out thereby greatly diminishing the force and effect of the steam-jets issuing from the holes.

The object of the present invention is to provide ablowerelement of this nature but with combined struts structed and secured and strengthen the header pipe, and will notloosen or drop out under the influence of heat. This object is andnozzles so conthat they willv stiffen attained by forming diametrically opposite holes in the header pipe, preferably of equal size so as to equalize expansion strains,

therein strut-s which across the interior of the pipe,

formed in one or both having et-nozzles and in assembling extend diametrically said struts ends thereof, thus strengthening the pipe against warpage and effectually preventing dislocation of the nozzles owing to their mechanical fastening the pipe.

In the accompanying drawings, Fig. 1

shows a section or" a soot blower element vention. Fig. Qon a on .opposite sides of boiler provided with a that embodies the insection of: a blower pipe and a combined strut and nozzle constructed and described. Fig. 3 is .a tubular strut-nozz secured as a' similar section with le of modified torme larger scale, shows a Serial no; 506,767.

Fig. '4: shows another form of tubular strutno'zzlesecured according to' the present invention. Fig. 5 showsanother modification.

For the purpose'of illustrating the use of the improved blower element, it is shown in connection with a water tube boiler in which the blower element'is arranged to extend across the water tubes 1 that are supportedbelow the steamv chambers 2 within the boiler 'setting 3 in the usual manner. The blower element consists of a header pipe l that is supported within the boiler setting in bearings mounted on some of the water tubes and that extends through one wall of the setting; on the outside the header is provided with means 5 through which steam may be admitted and with means 6 bywhich th element may be rotated. The blower pipe 4 has a series of diametrically opposite holes spaced at'suitable intervals along its length.

The struts 7 extend across the interiorof' the pipe through theseholes and are enlarged at each endor otherwise secured to the pipe. A .jet throwing nozzle maybe formed at one, end of the strut as shown in Figs. 3 and 5 or atbo th'ends" as shown in Figs. 2 and 4:. Such nozzles may be straight as shown in Fig i or theyfm ay be 'flaredas showninFi gs. 2,3and 5 to form a diverging path of discharge. i I Openings 8 are made througl the struts near the middle of their length for the passage ot steam from the header pipe into the nozzles,;which openingsmay be of any desiredsize or shape as indicated in the several figures.v v In all cases the struts pass across from one side of the blower pipe to the other and are headed over at their ends or otherwise positively fastened to the pipe in such manner as to prevent them from loosening. The

symmetrical perforation of the blower pipe tends balance and neutralize the. expansion or contraction strains of heating thereby ference may exist due to one side of the element being more highly heated than the other as it lies idle in the boiler. For example, the bottom of the element may be subjected to direct impingement of the flame, thus producing a higher temperature in the bottom wall of the pipe. When steam is admitted to the blower element in the normal operation of the same, condensate is frequently carried in with the steam and brought into contact with parts of the blower walls. The parts with which the water contacts are subjected to a greater chilling effect than those parts with which the steam alone contacts, thus causing an unequal cooling.

If one portion of a blower element is heated to a different temperature than the other portion, it is obvious that unequal expansion or contraction results, thus leading to warpage of the blower pipe. It is obvious that the use of the diametral struts as herein described resists this differential expansion or contraction and thus resists warpage of the element. If one side of the blower pipe tends to expand or contract ahead of the other, the action of the strut is such as to resist this tendency.

The invention claimed is:

1. In a boiler cleaner, a soot blower element adapted to be positioned within a boiler setting-for discharging a jet of cleaning fluid adjacent parts of the boiler to be cleaned, said element comprising a pipe formed withan opening, means for conducting a cleaning fluid to said element, and a member engaged in said opening and having a portion thereof provided with a passage Cadapted to conduct the cleaning fluid from within the element for discharge laterally of the element through said opening, said memher being also formed with a second portion engageable' with said element, said portions of said member cooperating to reslst dlstortion of the element under the influence of .temperature diflerences, said second portion extending substantially in the opposite direction from said first portion,and also provided with a passage adapted to conduct cleaning fluid from within the element for discharge laterally thereof.

2. In a boiler cleaner, a soot blower element comprising a pipe adapted to be positioned within the boiler setting and provided with diametrically opposite openings at in- ,tervals along its length, diametral struts passing through the tube and secured in said holes for resisting distortion of said element under the influence of temperature differences, said struts having passages respectively for conducting cleaning fluid from within the element for discharge laterally thereof.

3. In a boiler cleaner, a soot blower element comprising a pipe adapted to be positioned within the boiler setting and provided with diametrically opposite openings at intervals along its length, diametral struts passing through the tube and secured in said holes for resisting distortion of said element under the influence of temperature differences, said struts having passages respectively for conducting cleaning fluid from within the element for discharge laterally thereof, through said diametrical opposite openings.

4-. In a boiler cleaner, a soot blower element comprising a pipe adapted to be positioned within the boiler setting, a strut for resisting distortion of said element under the influence of temperature differences, said strut also forming a nozzle for discharging cleaning fluid in diametrically opposite directions and having a passage for admission of a cleaning fluid thereto.

5. A soot blower element comprising a pipe with a plurality of pairs of oppositely disposed openings spaced along its length, and a plurality of nozzle forming members, each engaged in a pair of said openings, the opposite ends of said members being spread laterally into engagement-with the outer surface of said element. V

6. A soot blower. element comprising a pipe provided with a pair of oppositely dis: posed. openings, and a nozzle forming mem- 95 her having'ends engaged in said openings respectively, said member being provided with means for conductinga cleaning fluid from within the element for discharge laterally thereof through said openings. 7 100 7. A soot blower element comprising a pipe having pairs of oppositely disposed holes at intervals along its'length, nozzle forming members extending across the pipe through said holes and enlarged on the outer ends for securing engagement. with the pipe about said holes.

8. A soot blower element comprising a pipe, said pipe being provided with a pair of oppositely disposed holes, and a nozzle forming member extending across the pipe and terminating in enlarged heads fixed in the said oppositely disposed holes.

9. A soot blower element comprising a pipe, said pipe being provided with a. pair of oppositely disposed holes. and a nozzle forming member extending across the pipe and terminating in enlarged heads fixed in the said onpositelv disposed holes on the tending across the pipe and through the opposite walls thereof and each having provision for discharging cleaning fluid jets in substantially opposite directions.

11. The combination with a sootblower element, of a plurality of spaced nozzles 1 mounted in said element and each having a soot blower element, and having a cleanan inlet within said element and flaring from ing fluid inlet intermediate said portions, said inlet to its outlet and each of said and means for conducting a cleaning fluid nozzles'also having portions engageable with from said inlet laterally of the element in the opposite Walls of the element for resistopposite directions for discharge through ing distortion of the element. said first named portions of the nozzle mem- 12. A nozzle forming member having her. portions engageahle with opposite Walls of NORMAN L. SNOW.