US1327144A - Tube suspension - Google Patents

Description

O. CARR.

TUBE SUSPENSION.

APPLICATION man MAR. 21, 1917.

Patented J an. 6, 1920.

a Cox M GA lJNlTCElJ STATES PATENT OFFICE.

OMA CARE, OF NEE/V YORK, N. Y.

TUBE SUSPEN$ION.

T0 (ZZZ whom it may concern:

Be it known that 1. Gem CARR, a citizen of the United States of America, and a resident of New York, county of New York, State oi New York, have invented certain new and useful Improvements in Tube Suspensions, of which the following is a full and clear specification.

In boiling, heating or cooling liquids, it is frequently found that the heating or cooling surface is subject to attack by the liquid, resulting in failure of the metal. The causes of such failure are various-acidity of the liquid, alkalinity of the liquid, corrosive gases in solution or suspension in the liquid, electrolysis, etc, either singly or in conjunction. For example, in an evaporator for concentration of waste sulfite liquors, if copper tubes be employed and the tubes at tached to a bronze tube-sheet, the tubes rapidly :t'ail, owing to solution of the metal by electrolysis; whereas, it a section of the copper tube be suspended by a copper wire. attached to a wooden beam in a boiling solution of the liquor, the action is either entirely arrested or so minimized that for practical purposes it may be considered as mTZ. In this example, electrolysis is eliminated, but electrolysis is usually set up if any two different metals are in contact in any part of the apparatus. It is, therefore, desirable that the tubes of such apparatus be so suspended that they are free of contact with other metal, and this I accomplish in my invention.

In the drawing- Figure 1 is a vertical sectional view of a portion of a tube-plate showing the manner of suspending or supporting the tubes therein;

Fig. 2 is an inside elevation of the supporting plate;

Figs. 8 and t are detail perspective views hereinafter set forth; and

Fig. 5 is a view of a modification of the device for wedginp; the packing.

Referring to the annexed drawing by reference characters, a designates the tube-plate or sheet and 7) the tubes extending therethrough and suspended therein by my improved devices hereinatter described. Integral intersecting ribs 0 on both the front and back of the tube-plate form rectangular pockets on the faces of the plate coincident with each other and with the tube apertures in the plate.

Specification of Letters Patent.

Application filed March 27, 1917'.

Patented Jan. 6, 1920.

Serial No. 157,863.

Into each of the pockets on the inside of the plate is fitted a rectangular ceramic or other tile (Z provided with a central hole for the passage of the tube, which is greater in thickness than the depth of the ribs 0 which form the pockets, so that when all the tiles are in place in the inner face of the tube sheet an inter-connected channel will be formed all around their edges coincident with the ribs. Into this channel is forbed a suitable cementing material, preferably lute. Into the pockets in the outer face of the sheet are fitted tiles 0 which are, like the tiles (Z, greater in thickness than the depth of the ribs on the outer face of the sheet,

so as to thereby provide an inter-connected channel around the tiles on the face of the sheet, which channel may, if desired, be filled with suitable cement or other plastic substance. Each of the tiles 6 is provided with a tubular extension f which surrounds the tube and extends inwardly through the sheet, contacting at its inner end with the companion tile (Z on the inner face of the sheet. Both tiles (Z and e are cemented in the ribs, a slight clearance being allowed between the edges of the tiles and the adjacent faces of the ribs to permit the introduction of a small quantity of cement, such as lute. i

It will be observed that the tubes rest entirely upon the tiles and do not come into contact with the cast iron or other metal tube-sheet, so that electrolysis is entirely eliminated. To fasten the tubes in the tubesheet, I employ a gland g which is fitted around the outer end of the tube and into an annular recess in the outer face of the tile 0, a suitable packing ring it being employed and a suitable wedge device 2' being employed to force the packing ring into steam and water-tight contact with the exterior of the tube, said wedge extending transversely of the tube and two coincident slots therein.

It will be understood that where the tube is connected to the tube-plate at each end, the wedges i react against each other to tighten the glands and their packings; if, however, but one tube is used, as is the case in certain types of apparatus, the tube may be beaded at y for reaction against the'wedge. It will be understood also that any other convenient method may be employed for fastening the tube in the tile supports; for instance, the double wedging device illustrated in Fig. 5 may be employed with advantage. v

The nature and scope of the invention having been thus indicated and its preferred embodiment having been specifically described, what is claimed as new is:

1. In combination with a tube-plate and a tube extending therethrough, means for supporting the tube in the tube-plate consisting wholly of an acid-resisting non-metallic medium, said tube support embodying tiles supported and cemented in the tubeplate.

2. In combination with a tube-plate and a tube extending therethrough, means for supporting the tube in the tube-plate consisting wholly of an acid-resisting non-metallic medium, said tube support consisting of tiles fastened to both sides of the plate, a cement being employed to fasten the inner tiles to the tube-sheet.

3. In combination with a tube-sheet provided with tube holes and with recesses in each face of the plate surrounding the holes, tiles set in said-recesses and provided with holes through which the tubes pass, said tiles affording the sole support of the tubes, and tube packing means being employed within the outer tiles.

slgnature. I

OMA CARR.

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