US1866570A

US1866570A - Tube support

Info

Publication number: US1866570A
Application number: US371910A
Authority: US
Inventors: Howard J Kerr
Original assignee: Babcock and Wilcox Co
Current assignee: Babcock and Wilcox Co
Priority date: 1929-06-18
Filing date: 1929-06-18
Publication date: 1932-07-12
Anticipated expiration: 1949-07-12

Description

H. J. KERR TUBE SUPPORT July 12, 1932.

Filed June 18, 1929 3 Sheets-Sheet l INVENTOR H. J. KERR July 12, 1932.

TUBE SUPPORT Filed June 18, 1929 3 Sheets-Sheet 2 NVENTOR BY W ATTORNEY July 12, 1932. KERR 1,866,570

TUBE SUPPORT Filed June 18, 1929 3 Sheets-Sheet 3 m1 m u mi H 11H :1 IN I W ATTORNEY rammed July 12, 1932 r UNITED STATES PATENT OFFICE HOWARD J. KERR, F WESTFIELD, NEW JERSEY, ASSIGNOR TO THE BABGOGK Q. WIL- GOX COMPANY, OF BAYONNE, NEW JERSEY, CORPQRATION OF NEW JERSEY TUBE SUPPORT Application filed June 18, 1929. Serial No. 371,910.

This invention relates to a novel and improved form of tube support particularly adapted for use with radiant heat superheaters, in connection with which it will be illustrated and described. In the accompanying drawings, I have shown selected embodiments of the invention, and referring thereto Fig. 1 is a vertical sectional view through a furnace and the lower art of a boilershowo ing a radiant heat super eater with the tubes supported according to one form of the invention. Y I Fig. 2 is a view taken on Fig. 1.

Fig.3 is a fragmentary section taken on the line 33 of Fig. 1.

Fig. 4 is a view on an enlarged scale, and :showing some of the structure appearing in the line of o Fig. 5 is a horizontal section through the structure appearing in Fig. 4.

Fig. 6 is a vertical sectional view through a superheater having the tubes supported according to a different form of the invention. F Fig. 7 is a view taken from the right of Fig.- 8 is a section on the line 8 -8 of Fig. 6.

Fig. 9 is a section on the line 9-9 of Fig. 6. v Fig. 10 is a view on an enlarged scale showing certain of the structure appearing in Fig. 7. I

Referring first to Figs. 1 t0 5 inclusive, I have shown the invention as employedwith 'a radiant heat superheater in the form of tubes 1 exposed on their front faces'tothe heat from the furnace, and connected at their opposite ends to inlet and outlet headers 2 rand 3. The superheater tubes are disposed in the wall of a, furnace, as plainly shown in Fig. 1, the furnace in this illustration being used to supply heat to a boiler, some of the tubes of which are shown at 4.

Disposed gutwardly from the superheater tubes are vertically extending fixed members '5 having mounted thereon angle plates 6.

' These angle plates are shown as arranged in pairs with horizontally extending legs spaced apart vertically so as to receive therebetween -59 a horizontally extending buckstay 7,'thiS buckstay being held in position by means of I a bolt 8 passing through the two angle plates I .wise secured to a cross-piece 10, and these cross-pieces are preferably in the form of horizontally extending plates, the tubes being welded to the front edges of the Plates, the

plates being spaced from each other but overlapping the buckstay7. Bolts 11 pass through openings in the .buckstay and are received in slots 12in the cross pieces, elongated in a direction transversely of the tubes, whereby a certain amount of movement ma take place between the different parts an whereby ease of assemblage is achieved. While the tubes 1 are shown bowed towards the furnace, nevertheless it is to ,be understood that the tubes may equally well be made straight, without departing from the invention Similarly, while. the tubes are shown square, so as to provide a substantially continuous face on the furnace side, it is of course to be understood that other forms I of tubes may be employed. In practice, the

spaces between ad'acent tubes are closed with a moldable brlck filling and the backs I of the tubes are covered with a suitable insula'ting material 13.

Referring now to Figs. 6 to inclusive,

the tubes 1 are here arranged in groups, as in I the previously described form, and the tubes fixed support to which these cross-pieces are secured, but instead, the cross-pieces are provided with horizontal slots 15 through which pass vertically extending stiffening plates 16, these plates being welded to the cross-pieces 14 where they pass therethrough. On either side of the cross-pieces 14 I have shown two other cross-pieces 17 two of these being above and two below the cross-pieces 14. As plain- 1y shown in Fig. 8, the plates 16 are received in slots 18 in the cross-pieces 17, and there is no fixed connection between these members so that the cross-pieces 17 may move with re- 9 spect to the plates 16 and transversely of the tubes for the limited amount permitted by the slots 18.

I claim I Y 1. In combination, a furnace wall having a row of tubes therein subjected to the heat of the furnace, a fixed support disposed exteriorly of the tubes, a cross-piece fixed to the backs of a plurality of tubes, a buckstay extending transversely of the tubes, expansible connections between said cross-pieces and said buckstay, andv 'expansible connections between said buckstay and said support.

2. In combination, a furnace wall having therein a plurality of vertically extending tubessubjected to the heat of the furnace, a cross-piece connecting a group of said tubes and fixed thereto, a fixed support,and an expansible connection between said cross-piece and said support. 4

d 3. In combination, a furnace wallhaving therein a plurality of vertically extending tubes subjected to the heat of the furnace, a cross-piece connecting a group of said tubes and fixed thereto, ahorizontally extending buckstay adjacent a plurality of said cross pieces, and expansible connections between the buckstay and the cross-pieces.

4. In combination, a furnace wall having therein a plurality of vertically extending tubes subjected to the heat of the furnace, a cross-piece connecting a group of said tubes and fixed thereto, a horizontally extending buckstay adjacent a plurality of said crosspieces, expansible connections between said cross-pieces and said buckstays, a fixed support, and expansible connections between the support and said buckstay.

5. In combination, a furnace wall having therein a plurality of vertically extending tubes subjected to the heat of the furnace, a plurality of plates each having oneedge secured to a group of tubes, a horizontally extending buckstay, and bolts on said buckstay and passing through slots in said plates.

6. In combination, a furnace wall having therein a plurality of vertically extending tubes subjected to the heat of the furnace, a plurality of plates each having one edge secured to a group of tubes, a horizontally extending buckstay, and bolts on said buckstay and passing through slots in said plates extending transversely of the tubes.

7. In combination, a furnace wall-having therein a plurality of vertically extending tubes subjected to the heat of the furnace, a plurality of plates each having one edge secured to a group of tubes, a horizontally extending buckstay, bolts on said buckstay and passing through slots in said plates extending transversely of the tubes, a fixed support,

and a bolt and slot connection between said support and buckstay.

8. In combination, a furnace wall having therein a plurality of vertically extending tubes subjected to the heat of the furnace, a plurality of plates each having one edge secured to a group of tubes, each of said plates having a slot therein, and means disposed in said slot and limiting movement of the plate and the tubes secured thereto.

9. A radiantly heated steam superheater comprising a row, of tubes disposed along a furnace wall, a fixed tube aligning support disposed outwardly of the tubes and extending transversely of-the row, and independent cross-pieces between separate groups of the tubes and said support so constructed as to allow limited movement between each cross-piece and the support to maintain the general integrity of the superheater front while permitting bending movements of some of the tubes relative to others.

10. A radiantly heated steam superheater comprising, in combination, a furnace, a row of steam conducting tubes positioned along a wall of the furnace, connectors rigidly joining a plurality of the tubes to each other into one of several groups so that the tubes of each group move in unison relative to other groups and relative to the furnace wall, and aligning means extending lengthwise of the tubes of a group and slidably associated with the connectors of the group to permit end- Wise movement of the connectors relative to said means while preventing movement of the connectors transversely of said means.

11. Aradiantly heated steam superheater comprising, in combination, a furnace, a row of steam conducting tubes positioned along a wall of the furnace, metallic sections each extending across and secured to a plurality of the tubes intermediate their ends and on the wall side of the tubes, a metallic guide member fixed intermediate its ends to one of said sections and extending lengthwise of the tubes oined by said sections, and lost motion connections between the other sections and said guide member for permitting outward or inward bending of the tubes of a group while maintaining the longitudinal operative position of the tubes in the group.

HOWARD J. KERR.