US1070115A - Superheater. - Google Patents

Description

J. GOATES.v

SUPERHBATBR.

APLIATIQN 'ILHD MAY 3,1913. 1,070,l l5. Patented Aug. 12, 1913.

5 SHEETSBHIIET l.

J. COATES.

SUPERHEATBR.

APPLIUATION FILED MAY s, 191'3.

1,070,1 1 5. Patented Aug. 12, 1913.

5 SHEETS SHEET 2.

Fi. l?

,1 vor J. OOATES.

i SUPEBHBATER.

APPLICATION FILED MAY 3, 1913.

Patented Aug. 12, 1913.

SHEETBHHEET 3.

` con; Caca/5595 wmf-.5558,

J. COATES.

SUPERHEATBR.

APPLIOATION FILED MAY 3.1913.

1,0%,1 l 5. Patented Aug. 12, 1913.

5 SHEETS SHEET 4,

J. COA

SUPBRHEA APPLIUATION r1 191s. 1,070,1 l 5. 'Patented Aug. 12,1913.

'5 SHEETS-SHEET 5.

INVENToR. J5/Q7@ (7% Q45 D STES ATENT 0F] JOHN COATES, OF WORCESTER ENGLAND.

SUPERHEATER.

Specification of Letters Patent.

Patented Ang. 12,1913.

Application filed May 3, 1913. Serial No. 765,344.

To all whom t may concern:

Be it known that T, JOHN Corri-1s, a British sub'eet residing at lVorcester count ot'- 7 :a 3

lVorcester, lilngland,.have invented certain new and uset'ul Improvements in Superheaters, of which the following is a specification.

This invention relates to improvements in snperheaters, more particularly for use with locomotive and marine boilers or with other boilers of a similar type. i

The invent-ion consists essentially in introducing a sui'ierheater tube into some or all of the fire tubes each super-heater tube being Closed at one end and having east. iron rings shrunkl thereon, and eontaining a seeond tube concentric therewith. The east iron rings are preferably provided with gills or ribs arranged either spirally or longitudi nally to direct the tiow of the gases.

The invention will be fully described with reference to the accompanying drawings forming part otl the specification.

Figures l and la together constitute a longitudinal vertical section through a locomotive boiler showing the invention applied thereto. Fig. 2. is an end view ot' the same.

Fig. 3. is an outside elevation of one of the super-heater tubes. Fig. a. is au enlarged section of a superheater tube. Fig. is a section on line .fc-af Fig. t. Fig. A6. is an enlarged section showing the eonneetion ot' the superheater tube to the header.

A superheater tube is inserted in some or all of the tire tubes B which may be enlarged to receive them. The superheater tube is composed of two concentric tubes A, A', the inner tube A being maintained in position by the supports a, (Fig. (3). The outer tube A is closed at one end and opens at the other end into the chamber C ot' the header C Connected with the saturated steam space D at the top of the boiler. 'lhe inner tube A is open at both ends, the inner end open.

A separate header is preferably provided for each vertical row of superheater tubes .t connected to aeommon'rehamber or pipe c leading to the steam space Dvabove the boiler and to a pipe .E leading to the cylinder.

Each vertical header (l may also be provided with an additional chamber F containing live steam. Holes f. (Fig. (3), are bored in the wall f of the Chamber Fv around the part where the tube A is fixed so that steam jets will blow through the holes f into the re tubes B around the superheater tube A in order to keep the latter' clean and free from soot.

lings Il of cast iron, steel or other material are shrunk onto the outer surface of the tulies toY protect them. These rings ll are arranged side by side so that a Complete covering of the tube A is obtained. The rings ll actas equalizers tor the he: t, since if there be an excess ot heat in the gas (lowing through the tire tubes, itwill be absorbed by these rings and will be given out to the steam in the super-heater tubes when the heat in thc lire tubes is somewhat diminished. ln this way the rings ll aet as cqualizers, so that a fairly constant supply oll heat is given to the superheater. The, east iron rings ll are. preferably provided with ribs or gills /L arranged either longitudinally or spil-ally as lshown in Figs. 3. Lt and 5 in which case cach ring is no tittcd that the gills thereotl aline with the gills ot' the preceding ring tormiig a series of spiralI passages around the tube A.

lhe tube is supported in the tube lby the supports l), (Fig. ln), or the gills z may be ot' such av depth that their outer edges engage on the inside ot' the lire tubes .B and `niaintain the superh'eater tube centrally in the tire tube. y

'lhe closed ends ot the tubes A may be only covered with' plain rings without gills. 'lhe ends of the tubes A'are covered with a cast' iron ea p or end picco l1. with or with@ out ribs or gills as desired. i,

What l claim as my invention and desire to protect by Letters latent isa-vlu a tire tube boiler the combination with "lha mcetfallc rings ao form continuous pasn lle lulu@ of a supmheator lube placed l my hand in presence of two subscribing wttherein, metalllc lmgfs on the Outer surface messes. 1- l th; fm 'erhalt-xr tulle I11 li in?" ri on of e p fa c L 1 d a n o be JGHN @GATES fea fn: the gases ef-:imuling .longitudinally Witnesses ALFRED EL (LMENTS, H, A. AUBREY.

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