US845083A - Boiler-tube cleaner. - Google Patents

Description

PATENTED FEB. 26, 1907. R. HERMAN.

BOILER TUBE-CLEANER. APPLICATION FILED DEO.22, 19'05.

- llllllll T 0 all whom it may concern.-

. February 10, 1905, and

I UNITED s Arns njr-ENT OFFiCE.,,

RAPHAEL HERMAN, OF DETRo1r,'MIcI-IIGAN.

BOILER-TUBE CLEANER.-

' Specification of iletters Patent.

. Patented Feb. 26, 1907'.

Application filed December 22, 1905. Serial No. 292.895.

I 3e it known that I, RAPHAEL I-Inmmiv, a citizen 'of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented a new and useful Improvement in Boiler-Tube Cleaners, of which the following is a specification.

This invention relates to ti at type of steamboiler tube or fine cleaners which delivcr a blast of steam through the ilues for removing the soot therefrom and carrying the some out through the chimney. Bcilrr-tube cleaners' of this character are shown in United States Letters Patent No. 720,252, dated June 13, 1905.

The object of this invention is to simplify and improve the construction, reduce the cost, and also increase the elliciency of this style of tube-cleaner.

In the accompanying dra\\-'ings, Figure 1 is a fragmentary longitudinal scctiennl elevation ofthe rear part of a statiomn-y boiler- Frovrdcd with 1ny 'nnpr ,\-'cd tube-cleamtr.

and separated therefrom by an intervening smoke-box or combustion-chainibvr b.

C represents the stationary casing on tubula'r shell of the tube-cleaner, which is arranged horizontally in an opening extending through the rear wall B and opening at its inner end into the combustion-clnnnlu-r opposite the center of the ilue area. Near its outer end the casing is provided with a hztcrsl branch,

E represents a nozzle of cylindrical term which is arranged in the inner part of the 01..-

mg and through which the steam is deli v: rod into the boiler-tubes. This nczzle'is capable of reciprocating in tiu-. c-::si|1g f. 1' moving its front or discharge end beyend ti'o casing while in use'or retracting the same \\'iti. in the casing, so that it will not be blll'llt'tl hile not in use. The nozzle is alsocapable of retation in the casing, so as to direct the steam 793,834, dated Fig. 4 is .and directing issuing from t-he front end successively into all cf'thc'ilnes.

F represents a stem, rod, or her whereby the nozzle is shifted. This rod is arran ed axially in the casing and stuiling-box f at the frontcnd thereof. At its inncr end the shifting-red F is connected by a scre\\-"jcint or otherwise with the hub g of a spider or bridge, the arms 9' ofwhich connect said hub with the. inner or rear end of the nozzle.

'lhenczzle is rotated by a crank or handle II, secured to the outer end of the shiftingrod, and the same is ncrmall'y held in its retractcd or inoperative position by meansv of a spring 'i, surrounding the shifting-rod and hearing at its opposite ends against said stnti in gbox and handle. The forward movement of the nozzle is limited by an external.

shoulder j thereon engaging with an internal shoulder I: in the bore of the casing.

1n the use of the tube-cleaner the valve (1 is opened, causing the incoming steam by impinging against the head L at the front end of the nozzle to automatically project the same into its foremost or operative position, :1s indicated by dotted lines in Fig. 1,'

ouilet-open ings in said head into the adjacent boiler-tubes.

The nozzle and the head and spider at its opposite ends are formed integrally, preferably by castin them in one piece,'as shown,

thereby simplifying the construction, re ducing the cost of nnnntfacture, and avoiding liability of parts becoming loose and impairing the working of the cleaner.

Upon closing the valve (1 and shutting oil the supply of steam the nozzle,-w lnch 18 now relieved from forward pressure, is retracted 5 automatically by the spring 1 lnto its rearmost position, as shown 111 full lines in Fig. l,

I in which it is protected from the destructive winch 18 connected with a st inn-supply pipe I D, containing a hand-rnlve d.

effects of the heat in the con'ibustion-cha-inber.

The steam-outlet is at the front end of the mo nozzle, as heretofore. constructed, consisted of an eccentric opening or radial slotformed in ti :0 head of the nozzle, whereby the steamjel'js concentrated upon a number of fines at a time, and all of the flues can be successively x05 operated upon by rotating thenuzzle. In practice it has been found that this construction does not spread the steam over a. su lieiently large area at one time, nor is the efl'ect of all of the passes through a 66 the steam issuing from the v parts of the steam-jet on no 1 apertures are preferably of cylindrical form,

those openings which are nearly parallel with -the fines are not cleaned as thoroughly as of the steam delivered by the several jetilan e. T is fian e is embedded or built I in place.

the fines or tubes uniform, so that some of others. To overcome this difficulty, the head L of the nozzle is provided with a plurality of jet openings or apertures Z, which are. all arranged obliguely to the axis of the nozzle and in position to deliver the jets of steam toward one side of its center. These jet-- and have their was arranged at different angles which diverge forwardly, so that each jet will cover a certain flue area" independent of the other jets, thereby causing the several jets to direct the steam at a uniform pressure over the fines which are under operation and effectually cleaning the same. In order to maintain this uniformity in the pressure openings, the length of these openings must be the same, and the inlet and outlet ends of each opening must be substantially at right angles to the axis of the opening. To secure this result, while retaining the jet-apertures at different angles, the head L of the nozzles is curved or inclined backwardly from one side to the other, so that it is oblique to the axis of the nozzle, and the head is made of uniform thickness. As shown in Fig. 2,

the axis of the nozzle are arranged in the foremost part of the head, while the opening arranged at the greatest angle to the axis of the nozzle is arranged in the rearmost part of the head. I

' For the purpose of holding the shell securely agaii'ist axial 'or lengthwise displacement in the opening of the rear wall of the' combustion-chamber the shell is provided near its front end with an external projection m, having rel crably the form of an annular into the brickwork of said rear wall, forininu, an anchor which effectually retains the shell In addition to the anchoringflange m the shell is provided with the usual external annular flange m near its rear oron tor end, which is fitted against the outer side of said wal l.-

When the combustiomchambcr is comparatively deep, the front end of the shell may be arranged flush with the inner side of the rear wall of the combustion-chamber and still permit the nozzle when projected and rotated to reach over the entire tube area. \(Vhcn, however, the combustionchaml er isverynarrow,suchan arrangement of the shell is not permissible, because under 1 these conditions the nozzle when projected would be so near the rear end of the-boiler that the angle at which the steam issues from the jet-openings of the nozzle would not reach the outermost tubes. In order to compensate 1" or the narrowness of the combustion-chamber and enableall of the fines 'o' be reached by the steam-jets,

the shell of the cleaners is secured in'the wall opening with the inner end thereof arranged outwardly beyond the inner side of the wall and at tuc base of a recess, n in said wall. This recess is conical andflares inward] orforwardly from the front end of the she I to the inner side of the wall. In order to pro- I duce a finish of their recess and sustain the brickwork around the same, as well as directing any stray steam toward the fines, this recess is lined by a conical guard or hood 0, having a collar'p at its inner, or 'small'end which surrounds the frontendof the: shell, and an annular groove or channel p, fitting around the anchor m, while its outer or larger end is provided with an annular flange g, which is fitted against the inner side of the rear wall of the combustion-chamber, as

shown in Fig. 1. The hood is preferably di- 2. A boiler-tube cleaner comprising a noz-- zle'having a transversely curved or lnchned head at its front end and a plurality of outletopenings in said head which are arranged at an angleto the axis of tlie nozzle, substantially as set forth. Y 3. A boiler-tube cleanerconiprising a nozzle having a head at its front end which curves or inclines rearwardly from one side of the nozzle to the other, and having a plurality of openings-arranged in said head and divcrgl forwardly, substantially as set forth.

41 A boiler-tube cleaner coirprisim a noz= zle having a head at its front end which curves or inclines rearwardly from one side of the nozzle to the other, said head being of uniform thickness and provided with a plurality oi cylindrical outlet-openings the axes of which diverge forwardly, substantially as set forth.

5. A boiler-tube cleaner comprising a stationary tubular shell, a tubular nozzle capa: blr'yol longitudinal and rotary movement in said shell and provided with a dischargeopvning, and mm: us [or operating, said nozzle, substantially as set forth.

(i. A boiler-tube cleaner comprising a stationary tubular shell, a tubular nozzle capable of longitudinal and rotary movement in said shell and provided at its front end with a head having a discharge;o ening, and an operating-rod connected w t 1 the rear end of said nozzle, substantially as set forth.

7. A boiler-tube cleaner comprising a tubular shell or casing adapted to be arranged in an opening in the rear wall of a'conibustion-chamberand having an external projection which is adapted to be anchored in the inner said Wall, and a discharge-nozzle eornmuni eating with said shell, substantially as set forth.

8. A boiler-tube cleaner comprising a tu bular shell or casing adapted to be arranged in an opening in the rear Wall of a combustion-chamber and having an annular external flange which is, adapted to be anchored in said Wall, and a discharge-nozzle communicating with said shell, substantially as set forth. 9. A boiler-tube cleaner comprising a tubular shell or ca'singadapted to be fittedin an opening in the rear Wall of a combustionchamber, a discharge-nozzle communicating with. said shell and a diametrically-dividcd conical hood arranged in the conical inner end of said opening and having a collar surrounding said casing, and an annular flange arranged on said casing engaging with an innular groove in the collar oi said hood, fsubstantially as set forth. i

'10. A boiler-tube cleaner comprising atubular shell or casingadapted to be fitted in an opening in the rear wall of a combustion- I chamber, a discharge nozzle communicating with said shell and a conical guard or hood surrounding the front end of said'shell and fitted in a correspondingly-shaped reccss on side of said Wall, substantially as setforth. i

11. A boiler-tube cleaner comprising a tubular shell or casing adapted to be arranged in an opening in the rear Wall of a combustionchamber and having an external flange enchored in said wall, a discharge-nozzlecommunieating with said shell, and a conical hood or guard arranged in a correspondinglyshaped reccss on the inner side of said Wall and provided With a central collar which is mounted on the shell in front of said annular flange, substantially as set forth.

12. A boiler-tube cleaner comprising a tubular shell or casing adapted to be arranged in an opening in the rear Wall of a combustionchanqber and having an annular external flange which is adapted to be anchored in said. Well, a discharge-nozzle con'iniunicating :Wl l)l1'S:l ,ld shell, and a diametrically-divided hood having aconical inner portion Wliich its a corrrspondingly-shaped recess on the inner side 01 said Wall and a cylindl ical inner portion surrounding said shell and having a channel which receives said flange, substantially as set forth.

W itness my hand this 9th day of December, 1905. I

JnAPnAEL HERMAN.

- Witnesses:

J. C. BILLINGHAM, ERED G. DEWEY.

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