US2237617A - Header connection - Google Patents

Description

April 8, 1941.

H. TREDE I 2.237.617

HEADER CONNECTION Filed March 22, 1939 2 Sheets-Sheet 1 Hana Wade,

T N In ven'i'or':

April 8,1941. TREDE 2.237.617

HEADER CONNECTION Filed March 22, 1959 2 Sheets-Sheet 2 HknaTrea'Ze Jnven Zor:

relatively short so that the Patented Apr. 8, 1941 HEADER CONNECTION it Hans Trede, KasseI-Wilhclmshohe, Germany Application March 22, L939, Serial No. 263,521 In Germany March 30, 1933 2 Ulaims. (or. est-L235) 'llhis invention is directed to a heat exchange system, and particularly to the construction of collectors for vaporizer tubes such as the tubes in the secondary boiler of an indirect steam generating system,

lln object of the invention is to provide a novel connection through the wall of the boiler between the collecting headers and the tubes of a primary steam generating system.

Generally, this and other tlon are obtained by arranging the the drum in adjacent vertical rows with each vertical row of tubes connected to'a vertically extending collector. Each collector is subdivided tubes within into two vertically extending chambers which are continued into a portion of the collector which projects through the drum. A special fitting perslnaller. its the fitting is upon the exterior of the drum, the entire part of the collector within the drum is available for the attachment of tubes.

"these and other objects of the invention may be more readily understood by reference to the accompanying drawings, in which:

l is a longitudinal cross sectional view through the boiler drum of an indirect steam gencrater.-

ll lg. 2 is a ll-t of Fig. l.

t le. 3 is an enlarged cross sectional view of a part ot' the boiler showing a vertical row of heatthe tubes joined to a collector, and a cross sectlonal view of an adjacent collector.

l 'lg. a is a cross sectional view on the line 4l oi? t le. 3.

t tle. 5 is a. cross sectional View on the line 55 of his. 3; and v 7 his. t is a cross sectional view on the line 6-6 ol the. d.

Mounted within rollty of collectors cross sectional View on the line theboller drum 2 are a plu- 4, these collectors being arranged and spaced in parallel rows adjacent the mid-point of, and transversely of, drum 2. As shown, there are two rows of four vertically extending collectors.

vertical row of tubes forming t, which will be described with reference to a single collector.

lilach collector 4 is provided with a vertical row ol openings 8 on one face thereof,

objects of the lnven and a second a parallel row of openings ill on the same face.

t in the 'lhese two openings communicate with the in terior of the collector, and extend into separate chambers l2 and it, respectively, said chambers being formed by the partition it extending vertically within the collector t. A bifurcated connecting tube member it is opening 8 and it, the single end it of each memher it being fitted within each of the openings t and ill. To the bifurcated ends, the Ill-shaped tubes of heating elements 6 are connected. Each Ill-shaped tube comprises an inner tube M and an outer tube to which extend longitudinally of the boiler. The'tubes extending from the openings steam inlet chamber ii! are directed horiaontally of then are directed downwardly to the openings l t communicating with chamber l t on the steam condensate return side of the partition l6. As shown in Fig. 3, the opening 8 for each tube is vertically displaced with respect to the opening ill for each tube to, El).

Each collector t therefore has attached to it a vertical row of tubes to form the heating element 6, the tubes being multiplied in number by means of the bifurcated connection l 8. Of course, even a greater separation of the tubes can be obtained by using a suitable connecting member. The

v Block 28 is tubes are smaller than the customary vaporizing tubes and present a greater heat exchange sur .face to the boiler l; While the collectors I need be only Wide enough to receive the single ends l9 of the members it. Individual collectors l in each row are spaced apart, and the rows of collectors are spaced so that the collectors can be made accessible for cleaning and repair. Opposite each of the openings 8 and II) in each collector, corresponding openings are made in which plugs 29 are inserted, which plugs are removable for the purpose of cleaning tubes.

The base of each collector l is recessed to pro vide a shoulder 22 which is seated in a corresponding shoulder it in the bottom of boiler 2,

. the boiler thickened at this point as shown at 24. p

of thecollector 4 is formed as a tube bent relative to collector 4 to have its radially of the circular boiler 2, note 4. A block 28 is threaded to tube 26. bored and threaded at 30, and bolts 32 passing through openings 30 hear at their ends against thickened portion 24 of the boiler, and pull the collector 4 into firm engagement with the wall of the boiler. A second block 34 is placed The outlet 26, which is axis extend Figs. 3 and .over the end or tube 26 and is held thereagainst by the bolts 32 which freely pass through holes in provided for each the boiler to the blight of the U, and

block 34, the engagement being maintained by nuts 36.

Block 34 is bored to provide an inlet steam passage 38, and an outlet steam or condensate passage 40, these passages communicating, respectively, with the chambers I2 and H on opposite sides of partition l6. Of course, passages 38 and 40 are connected by proper means such as pipe lines 42, M to the primary steam generating system.

Having now described a means by which the objects of this invention are obtained, What is claimed is: Y

1. In a boiler drum having heat exchange tubes, a collector comprising a vertically mounted hollow member having an end portion projecting through the wall of said drum, partition means for dividing said collector into two chambers, vertically xtending rows of aperture means in one side of said collector for providing communication with said tubes, shoulder means for seating said collector against the inner surface of the wall of said drum, 8. block externally of said drum fastened to said projection end portion, a second bored block capping said end portion and providing communication means for said chambers, respectively, and bolt means freely passing through said second block and threaded through said first block and bearing against said drum.

2. A device for fastening the end of a collector which projects through the wall of a drum comprising a block fastened to the projecting end of said collector, a second bored block capping said end and providing communication means for the interior of said collector, and bolt means freely passing through said second block and threaded through said first block and bearing against said drum.

HANS TREDE.

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