US1060923A - Water-tube blower. - Google Patents

Description

J. MAGEE. WATER TUBE BLOWER.

PPLIoAToN RILED MAY 1e, 1912.

Patented May 6, 1913.v

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: J. MAGEE.

WATER TUBE BLOWER. APPLIoATIoN FILED inleg-T912.

1,060,923. Patented May 6, 1913.

WiTNEEJE v INVENTR /ff @Mag TTURNEYE J. M AGEE.

WATER TUBE BLOWER.

APPLIoATIoN FILED MAY 1s. 1912.

1,060,928. Patented May 6, 1913.

Fi qui o HH lNvEN-rnR m1555155 ATTnRNEYz:

UNITED STATES PATENT OEEIOE.,A

JOHN MaeEE, or DETROIT, MIcHIGAmAssIGNOE To DIAMOND POWER. SPECIALTY COMPANY, OE DETROIT, MIOHIGAN, A. oOEPoEeTION OE MICHIGAN.

WATEBfTUiBE BLOWER. j

Specification i Letters Patent. Application led May 16, 1912. Serial No.' 897,762.

Patented Mair-6, i913.

To all whom t may concern:

Be .it knownthat I, JOHN MAGEE, a subject of the King of England, residing at Detroit, in the county of Wayne and State of Michigan, have .invented new and useful Improvements in Water-Tube Blowers, of which the following is a specification.

Thisy invention relates to the class of blowers or cleaners employed for removing soot chamber, so that they could be withdrawn therefrom when not in use.` This construction is comparatively expensive and less convenient in use tha a blower permanently installed inthe com ustion chamber.

One of the objects of my invention is the provision of a blower of this type which may be permanently installed in the oombustion chamber and ywhich is at the same time provided with cooling means to protect it from the destructive action of the heat and lengthen its life.

A further object is to provide a blower which lwill reach practically all the boiler tubes and thoroughly clean them.

In the accompanying drawings consisting of 3 sheets: Figure l is a fragmentary transdisposed blowervembodying the invention.

Fig. 2 is a longitudinal section, on an enlarged scale, of the front or outer portion of said blower. Fig. Bis asimilar section of the rear or Ainner portion thereof. Fig.v 3a is a similar section of an. intermediate portion thereof. Figs. 4, 5, 6 and 6a are transverse sections onv the correspondingly-numbered .lines in Fig. 2. Fig. 7 is a fragmentary longitudinal section of a Babcock and Wilcox boiler equipped with a longitudinallydisposed blower containing the invention, Fig.A 8 is 'a longitudinal section, onnan enlarged scale, ,of the outer portion of Said blower. I Fig. y9 is 'a similar'section of its inner portion. Fig. 10 is a vertical section 'of a vertical-tube boiler equipped with the kimproved blower.

Similar characters of reference indicate views.

Referring to Figs.' 1 6, 1v indicates the y walls of the boilersetting and 2-the water tubes communicating at their ends with the customary `headers 3 and -1.

. The blower comprisesa shell or casing 5 arranged on the outer side of the boiler setl ting and a jet or blower-tube 6 connected between which is formed a steam inlet chame ber 10 with which is connected a steam supply pipe 11 controlled by a valve 12.- The blower tube 6 Yis' arranged axially in the shell 5 and closely fitted in openings in the partitions 8 and 9, the portion of said tube between the .partitions being provided `with f one or more steam inlet openings 13 communiseating with said chamber, while the outer end of said tube is closedby a head or plug 14 bearing vagainst the outer side of the partition v9 and preferably rotatable in the shell 5, The blower tube is secured to this plu'g by any suitable means, so as to turn therewith and the plug is i-n turn rotated by a rotary disk 15 connected therewith by lontg-litudinal pins 16 preferably secured to .disk and entering sockets in 4Said plug. This disk has a stem- 17 extending through a stuffing box 18 at the outer 'end of the shell and is providedat its projecting end with a hand wheel 19, or other SuitablemeanS, for turning it. The disk 15 is held in place in the' shell by the outer cap 20 o'if the shell,

ioo.

as shown in Fig. 2. A drip pipe 21 having a hand valve 22 is connected with the lower side of the steam inlet chamber -10 for carry'iing off the water of condensation.

Surrounding the blower tube 6 1s a tube, hood or jacket 23 which protects kthe same from. the heat ofthe combustion chamber and also forms a part of the cooling means hereinafterl described. This jacket is provided. with openings into or through which the jet nozzles or nipples 7 extend. It is undesirable to subject these jet-nozzles to the strain of transmitting the turning move ment of the blower-tube to the jacket, and separate means of any suitable construction are therefore preferably employed for this purpose. The preferred devices illustrated in the drawings consist of radial clamping screws 23a arranged in threaded openings of the jacket and bearing against the outer side of the blower-tube, as shown in Fi s. 2 and 6a, thus relieving the jet nozzles rom such turning strains. A single row of such 'screws located near the blower-inletV is shown in the drawings, but one or more additional l rows may obviously be employed at other points, if desired. The jacket 23 is suitably supported in the wall of the boiler setting opposite that near which the shell 5 is arranged and its inner end is preferably serrated, as shownat 24, to form a drill by which the jacket, on being rotated by the hand wheel 19, bores its own supporting socket or groove in the adjacent wall 1. The jacket extends into the inner end of the shell 5 through a stufling box 25 and is suiiiciently larger in diameter than the blower tube 6 to leave an intervening annular fpassage 26 for a suitable cooling agent, pre erably a liquid such as water. This passage communicates at its outer end with a water outlet chamber 27 formed. in the shell on the inner side of the partition 8 and having a discharge pipe 28 leading to the drip pipe 21.

Arranged concentrically within the blower tube 6 and separated therefrom by an intervening steam space or passage is a direct pipe or conduit 30 lfor the water or other cooling agent. This pipe extends through the plug 14 and communicates with a water: inlet chamber 31 formed in the shell be* tween said plug and the disk 15. Leading to said chamber is a valved ,supply pipe 32. In the preferred construction shown in the drawings, the direct water pipe 30 is removably screwed into the plug 14 and clamped therein by a nut 33. The inner end of the blower tube 6 is closed by a plug 34 through which the water pipe 30 passes, and said water pipe is closed at its inner end by a plug 35 lpreferably formed integral .with a larger p ug or partition 36 which is arranged in thejacket 23vnear its serrated end.

The water pipe is removably supported in the plugs 14 and 34 and `upon the plug 35. This construction permits the ready removal of the water pipe for cleaning it, after removing the cap 20 and disk 15. Between the plugs 34 and 36 the direct water pipe or passage 30 is provided with a number of openings 37 through which the' water es- Leccese the jet-nozzles 7, the blower tube is preferably provided with one or moresuitable expansion joints, particularly in comparatively long blowers. Ordinarily one such joint located laboutsiX feet from the lirst nozzle nearest th'e blower-inlet is suii'icient.

In the preferred construction shown in Fig. 3a of the drawings, the expansion joint consists of a tight slip joint 6a formed by making the blower tube in sections which are telescoped. j

It will be understood from the foregoing that upon opening the valve 12, steam is admitted to the inlet chamber 10 of the shell whence it passes through the openings 13 into and through the blower tube and thence issues through the several jet nozzles 7 against and among the water tubes of the boiler. These nozzles are preferably arranged at suit-able intervals on one side of the blower tube, to concentrate the Steam jets upon the boiler-tubes, and by rotating the blower-tube, as before described, all portions of the boiler tubes are subjected to the action of the blower and thoroughly cleaned. A single blower is shown in lthe drawings, but in practice two or more may be installed at proper elevations or intervals to lreach and thoroughly clean all of the boiler-tubes.4

While the blower is not in use, water or othercooling agent is caused to circulate' around the blower or blower-tube 6 by opening the .valves of the water supply pipe 32 and the discharge pipe 28. The water entering the inlet chamber 31 passes through the direct pipe or passage 30, andthe openings 37 -into the surrounding jacket 23,

whence it returns through the passage 26v into the outlet chamber 27 from which it is discharged through the pipe 28 into the dri pipe 21.

y maintaining a circulation of water or other suitable cooling agent through oraround the blower tube, or both, as shown in the drawings, the same is no more liable to burn out than the water tubes ofthe boiler which have a similar circulation, thus materially prolonging its life. This cooling provision makes it practicable to permanently install the blower .in the combustion Achamber among the boiler tubes, rendering,J

the blower more convenient in use by avoiding the necessity of withdrawing it from! the combustion chamber andalso materially reducing the cost of manufacturing and installing theblower. At the same time the apparatus in no way interferes with the draft.

The water supply pipe 32 and the water discharge pipe 28 of the blower preferably` have no connection with the water spaceof u sediment in the water, 'which would be liable to occur if hot water from the boiler were supplied to the water jacket of the blower.

described the steam and the cooling agent Vare both supplied to the blower and discharged therefrom at the same side of the boiler. Such a return type of blower is designed more particularly. for use in connection with boilers arranged side by side in a, `battery or batteries, where the shell 5 and pipe connections can be installed only at the outer or accessible'wall of the boiler setting.

In cases where it is practicable or preferable to providethe blower with supply connections for the steam and the cooling agent at one end and with ldischarge connec- 'tions at the opposite end, a blower vof the modified construction shown in Figs. 7, 8 and 9 may be employed. In Fig. 7 such a blower is shown as applied to a Babcock & Wilcox boiler, the blower being arranged lengthwise of the boiler and replacing one of the tubes. In practice, one' or more blowers are thus disposed at suitable points to reach and clean all of the tubes; for example, the two tubes marked 2a in Fig. 1, may be replaced by such longitudinal blowers. Referring to this modification of the invention, the central water inlet pipe 30 of the first described construction is omitted andthe jacket or protecting tube 38 of' the blower-tube 39 extends through suitable stufling boxes or fittings .in the headers 3 and 4, and its upper end passes through a stuiing box 40 into an inlet chamber 41 for the water or other cooling agent formed in the adjacent portion of the shell 42, said chamber having a supply connection 43. As in the first-described construction, the blower tube 39 is arranged concentrically within the j acket38 and separated therefrom by awater passage '44 extending throughout its A length. This passage communicates at its Y rear end with a suitable, connection 45 applied to the rear end of the jacket and leading to the discharge pipe 46. The blower tube andjacket are connected by the jet nozzles 47 and screws 23?, as in the construction first described. Likewise the outer end of the blower pipe is arranged in the steam incular flange 52 rotatably seated between an internal shoulder 53' of the `shell and a nut s wheel 50 'indi-v 54. Connectedfwith the outer end of this head is the stem or spindle '55 of the hand 56 by ywhich the blower is turned.` The ste-m 55 is preferably disposed horizontally'and inasmuch as the blower tube follows the inclination of the boilertubes, it is necessary to provide a universal joint 57 of any suitable construction bet/Ween the stem j and said head. It will be noted that in the blower just-i `As shown in Fig. 9, the rear end of the blower tube is closed by a plug 58.

In the use of this blower which may be termed the direct type, the steam entering through the inlet connection 50 `passes through the openings 49 into the'blower tube 39 and escapes through the jet nozzlesl 47, cleaning the boiler tubes. lThe water or other cooling agent admitted through the inlet connection 43 enters the chamber 41 l and passes through the space yor passageBS between the blowertube.39 andthe jacket upper portion of its combustion chamber with a direct blower 59, similar to that shown in Figs. 7-9, and in its lower portion witha return blower 60, similar to that shown in Figs. 1-6. In this case, both blowers extend transversely of the'combustion chamber andamong the boiler tubes.

Other changes or modilications may obviously be made within the scope of the appended claims, and I do not therefore wish to be limited to the particular constructions herein shown and described.

I' claim as my invention: e i

l. In a boiler, the combination with the combustion lchamber and the boiler-tubes, of a soot-blower arranged in said chamber adjacent to the boiler-tubes to remove the soot therefrom, and means for supplying a cooling liquid to the blower.

2. In al boiler, the combination with the combustion ,chamber 'and the boiler-tubes, of a soot-blower arranged in said chamber adjacent to t-he boiler-tubes to remove the soot therefrom, a 'jacket inclosing the blower, and means for supplying a cooling agent to said jacket.

3. The combination with the boiler setting, the combustion chamber andthe boilertubes, of a soot blower comprising a casin arranged on the outer side of the setting an having separate inlet chambers for steam and a cooling agent, a blower tube permanently arranged in the combustion chamber adjacent to the boiler-tubes to remove the sootl therefrom, said blower-tube being connected with said steam inlet chamber, and a cooling conduit associated with said blowertube and connected with said cooling-agent chamber.

5. In a boiler, the combination with the combustion'chamber and the boiler-tubes, of a soot-blower arranged in said chamber adjacent to the boiler-tubes to remove the soottherefrom, and cooling means associated with said blower .and independent of and disconnected from the water space of the boiler.

'6. In a boiler, the combination with the combustion chamber and the boiler tubes, of a soot-blower arranged in said chamber adjacent to the boiler tubes to remove the soot therefrom, a jacket inclosing the blower, and means for supplying a cooling agent to said jacket disconnected from the waterspace of the boiler.

7. A soot-blower comprising a casing having separate inlets for steam and a cooling agent, a blower-tube connected with said steam inlet, and a cooling-conduit adjacent to the blower-tube and connected with said cooling-agent inlet.

8. A soot-blower comprising a casing having separate inlets for steam and a cooling agent, a blower-tube connected with said steam inlet, and a cooling jacket surrounding the blower tube and connected with said let for a cooling agent, a blower-tube comcooling-agent inlet.

9. A soot-blower comprising a blowertube, a protecting jacket surrounding said tube and provided at its inner end with boring means adapted to penetrate the boiler sett-ing, and means for rot-ating said jacket.

10. A blower comprising a casing having a steam inletchainber, a blower-tube communicating with said chamber, a protecting jacket surrounding the blower tube and provided at its inner end with borin means adapted to penetrate the boiler-setting, and means for rotating said jacket.

11. A blower comprising a casing having a steam inlet chamber, a blowertube coinmunicating with said chamber and rotatable in said casing, means for rotating the blower tube, a protecting ljacket surrounding the blower tube and provided at its inner end with boring4 serrations, and means connecting the jacket with the blower-tube to compel it to turn therewith.

12. A lsoot-blower, comprising a casing having a steam inlet and an inlet and an outweones municating with said steam inlet, and direct and ret-urn conduits forthe cooling agent arranged adjacent to the blower tube and respectively connected with `said secondnamed inlet and said outlet.

13. A soot-blower, comprising ,a casing having a steam inlet and an inlet and an out-` let for a coolingagent, a blower-tube communicating with said steam inlet, a direct conduit for the cooling agent arranged within the blower-tube and communicating with said second-named inlet, and a return conduit for the cooling agent surrounding the blower-tube and communicating with said outlet. Y

14. A soot-blower comprising a casing having a steam inlet chamber, an inlet chamber for a cooling agent and an outlet for said agent, a blower tube extending into said casing and communicating with said steam la pipe arranged within the blower-tube ,and

communicating at its receiving end with said second-named inlet chamber, the opposite end of the pi e extending through the closed end of the blower-tube and having a discharge opening in its projecting portion, and a cooling jacket surrounding said blower-tube and closed at its inner end, said inner portion of the4 jacket communicating with the projecting portion of said pipeand the opposite end of the jacket coinmunicating with said outlet. l

16. A blower, comprising a Icasing having a steam inlet chamber, an inlet chamber Jfor a cooling agent and an outlet for said agent. a blower-tube extending into said casing and rotatably arranged therein, said tube communicati-ng with said steam inlet chamber. a rotary plug secured to the iront end of the blower-tube, rotary operating means connected with said plug and extending outside `with said second-named inlet chamber and at its delivery end with said jacket.

17. A blower comprising a casing having a steam inlet chamber, an inlet chamber for a cooling agent and an outlet for said agent,

a blower-tube extending into said casing and rotatably arranged therein, said tube communicating with said steam inlet chamber, a rotary plug secured to the front end of the blower-tube, a rotary disk arranged in said second-named inlet chamber and spaced from said plug, pins connecting said disk with said plug, means for rotating said disk extending outside of said casing, a cooling jacket surrounding said blower-tube and communicating with said outlet, and a pipe arranged lengthwise within the blower-tube and connecting said second-named inlet chamber with said jacket.

18. A blower, comprising a casing havingl a steam inlet chamber, an inlet chamber for a cooling agent. and an outlet for said agent, a blower tube communicating with said steaminlet chamber, a plug closing the front end of said tube, a cooling jacket surrounding the blower tube and communicating with said outlet, and a pipe arranged within the blower tube and removably secured in said plug, said pipe communicating at its receiv- 25- ing end with said second-named inlet chamber and at its opposite end with said jacket. 19. A blower, comprising a casing having a. steam inlet chamber, an inlet chamber for a cooling agent and an outlet for said agent,A

a blower tube arranged in said casing and communicatingwith said steam inlet chamber, plugs closing the front and rear end' of said tube, a cooling jacket surrounding the` blower tube and communicating with said outlet, a water pipe disposed lengthwise in the blower-tube and removably supported in said plugs, said pipe communicating at its receiving end with said second-named inlet chamber and at its opposite end with said jacket, and a plug closing the rear portions of said jacketand said removable pipe.

20. A blower comprising a casing having separate inlets for steam and a cooling agent a blower tube communicating with sai steam inlet and having jet nozzles, a cooling jacket surrounding the blower tube communicating with said cooling-agent inlet' and having openings through which said jet nozzles pass, and. means independent of said i nozzles for connecting the jacket with the blower tube.

21. A blower comprising a casing havingseparate inlets for steam and a cooling agent a blower tube communicating with sai' steam inlet andhaving jet nozzles, means for rotating the blower-tube, a cooling jacket surrounding the blower tube, communicating with said cooling-agent inlet andy having openings through which said jet-nozzles pass, and means independent of said nozzles for transmitting the rotary movement j of the blower-tube to said jacket.

22. A blower comprising a casing having separate inlets for steam and a cooling agent. a blower tube communicatingl with said steam inlet and having jet nozzles, means.

for rotating the blower-tube, a cooling jacket surrounding the blower tube, communicating with said cooling-agent inlet and having openings through which said jet nozzles pass, and connecting screws carried by the jacket and engaging the` blower-tube.

23. A blower comprising a casing having separate inlets for steam and a cooling agent, a blower tube containing one or more eX- pansion joints, said tube communicating with said steam inlet and having jet-nozzles, A

hand thisllth day of May,

Jon-N MAGEE.

Witnesses HARRY A. HIGGINS, EVELYN HEADRIDGE.

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