US2244522A - Tank construction - Google Patents

Description

m 3, mm, H. E. FRITZ mm. 224452 2 TANK cousmucuou Filed July 13, 1933 Patented June 3, 1941 TANK CONSTRUCTION Howard E. Fritz, Barberton, and John R. Hoover, Cuyahoga, Falls, Ohio, assignors to The B. F. Goodrich Company, New York, N. Y, a corporation of New York Application July 13, 1938, Serial No. 268,936

1 Claim.

This invention relates to tank construction, and is especially useful where the walls of a tank are to be protected by a rigid masonry structure therein.

In the manufacture of tanks for containing pickling solutions or other corrosive liquids where protective linings of masonry are installed within tanks having rigid walls, it has been found that the expansion of the masonry when subjected to heat is greater than the expansion of the tank walls, so that in some cases failure of the tank wall has resulted from expansion of the masonry lining.

The principal objects of this invention are to provide safety of construction, to provide cush ioning of the masonry lining, to provide combined cushioning and anchorage of the lining, and to protect the cushioning means from de terioration.

These and other objects will appear from the following description and the accompanying drawing.

Of the drawing:

Fig. 1 is a perspective View of a corner of a tank embodying the invention in its preferred form, the masonry lining being shown as only partially completed, parts being broken away, and parts shown in section.

Fig. 2 is a cross sectional view of a portion of the wall, taken at line 22 of Fig. 1, showing the means for cushioning expansion between sections of the masonry sheathing.

Fig. 3 is a similar view showing a modification of the means for cushioning expansion between sections of the masonry sheathing.

Fig. 4 is an end view of a cushioning strip employed in the construction shown in Figs. 1 and 2.

Fig. 5 is a similar view of a modified form of cushioning strip such as is used in the modification shown in Fig. 3.

Referring to the drawing, the numeral H! designates the end wall, H the side wall, and i2 the bottom wall of a tank of rigid material. Preferably the walls are formed of steel plates welded or riveted together but the walls may be of concrete or other materials. A continuous layer of corrosion resistant rubber l3 extends over the inner surfaces of the walls of the tank and is cemented or otherwise secured to the walls.

A lining of acid proof bricks M set in acid proof cement i5, is built within the rubber lining to protect the lining from high temperatures, the brick being of low heat conductivity, and to further protect the rubber lining from puncture due to objects being dropped or agitated within the tank.

To provide against rupture of the tank due to differential expansion of the tank and its protective brick lining the brick lining is spaced from the rubber lined walls of the tank at the ends of the tank by spaced blocks or strips it of deformable material such as rubber, and preferably comprising strips of resilient material having openings ll extending therethrough and preferably lengthwise thereof. The preferred form of these cushion strips is shown in Fig. 4. In this form, one face of the strip is made fiat for cementing it to the rubber lining while the opposite face is formed with lengthwise flutes I8 separated by grooves l9 which permit even greater deformation of the strip. Where the tank is greater than twenty feet in width, the brick walls may also be spaced from the rubber lining at the sides of the tank by use of the cushion strips. The spaces 2% between the cushion strips are kept open to permit distortion of the strips it under compression.

Where the walls of the tank are of great length it is advisable to build the brick lining in sections separated by rubber expansion joints. To provide for adequate expansion cushioning and at the same time to anchor the masonry to the walls of the tank T-shaped metal bars 2! are welded or otherwise secured to the tank walls with their cross-members parallel to the walls of the tank. The rubber lining i3 is applied so as to follow the contour of the T-bars as at 22. Cushion strips 23, 24 are cemented to the lining over the main web of the T-bars and narrower strips of hollow cushion material 25, 25 are cemented along the edges of the cross-web to cushion the thrust of the brick sections. The T-bars are preferably of such dimensions as to extend through the first course of brick. The second course may be cushioned sufficiently by an L-shaped strip 2i! of soft, preferably unvulcanized, rubber one leg of which is cemented to the rubber lining over the T-bar, while the other leg is cemented to the adjacent bricks between which it extends. During expansion of the brick the strip 2? may be deformed so as to be forced somewhat out of the joint, which provides sufiicient expansion means for the single course of brick while sealing at all times against the faces of the brick structure.

Where greater expansion of the walls is encountered, the modified construction illustrated in Fig. 3 may be employed. Here a tunneled strip 28 of vulcanized rubber, having smooth parallel faces, may be used to separate the bricks in the inner courses of the brick panels and is cemented to the brick.

In the bottom of the tank, Where temperatures are relatively cooler, a simple strip of rubber material 29 is used between the sections of brick and is cemented to the rubber lining l3, and at its ends to the rubber angle pieces 21.

Various modifications may be made without departing from the scope of the invention as it is defined by the following claim.

We claim:

A container tank adapted to hold liquid at variable high temperatures, said tank comprising a rigid supporting structure having extensive inner wall surface, a layer of rubber-like material secured to an inner face of said structure covering substantially the entire inner surface thereof, an extensive masonry wall of brick and cement spaced from said layer of rubber-like material and arranged to provide a protective wall for insulating said layer of rubber-like material from high temperatures within the container and to protect such layer from abrasion, the spacing being effective to accommodate extensive relative movement under temperature changes of the masonry wall material with respect to said supporting structure, and cushioning strips of rubber-like material disposed in said spacing with intervening spaces between said strips, said strips being adhesively secured to the face of the rubber-like lining and bridging the space between said rubber-like lining and masonry wall, said strips being distributed extensively over the area of said masonry wall to support the same in the spaced apart relation from said layer of rubberlike material and to accommodate the relative expansion and contraction of said Wall and said supporting structure.

HOWARD E. FRITZ. JOHN R. HOOVER.

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