US2395685A - Storage tank - Google Patents

Description

Feb. 26, ww.

H. SCHMITZ. JR

STORAGE TANK Filed June 10, 1943 2 Sheets-Sheet 1 INVENTOR BY g ATTORNEK Feb. 26, 1946.' H. A. scHMlTz. JR

STORAGE TANK Filed June 10, 1945 2 Sheets-Shet 2 'WNS INVENTOR.

ATTORNEY Patented Feb...

irrar ids it. he r... dhore to a. o. dth distention, .3;

comorntl at New York Application 5 it, Edit, -r: No. $99,257 I I it: ist (C11,, 22 f" 1 r for stor= .a storage tank having substantially thin corrosion resistant alloy plates that are capable of resisting the tensile stressi to which the tank is subjected by the contained liquid and having parts giving added rigidity-to withstand the pressures exerted by the normal action of the elements.

Other objects of we invention will appear from the iollo description of an embodiment oi the invention illustrated by the accompanying I drawings: a

e l is an elevational'view partly in vertical section of. a sectional storage tank embodying the invention;

Fig.2 is a top plan view of the. sectional storage tank, a part being broken away;

Fig. 3 is a vertical enlarged sectional view through one of the side plates and a portion of the roof oi the tank; r

Fig. 4 is a section similar to Fig.3 of the central portion of the rooi;

Fig. 5 is a section taken on line 5-5 of Fig. 2;

Fig. 6 is an enlarged section taken on line d-t .culate to them.

cared to vertical chels l in the manuiact :-i .o': plant by the outer welds 8 and the inner wel d. e wel d and r d the respective ch nels i need not be of corrosion resistant me as these parts do not come into contact with e contained fluid. The channels serve to dive rigidity to the substantially thin plates d t form the side wall-of the tank and the plates can then efiectivelyresist the pressures exerted by the elements. The depth oi the channels may vary with the amount of rigidity desired in e plates.

In assembling the t nels l oi adjoining m the field a l a t are disposed bash to back, and while maintained in this position they channels are secured together by the vertica disposed inner weld id and outer weld it. 8 i

"lar to welds 8 and e no latter welds iii and ii need not be'made from corrosion resistant metal as the fluid contained in the tank does Apertures are provided at predetermined tances through the webs oi the chels l, d the tie bolts it are disposed therein to hold the channels oi the adjoining panels 5 together dur ing the mg of the welds it and ii and to give of Fig. 1 to show the joining oi two panels oi the side wall; and

Fig. 7 is a transverse section of an edge of a panel as fabricated in the shop.

Referring to the drawings, there is illustrated a structure comprising a base i, preferably of concrete, on which is mounted the body portion or side wall 2 and roof 3 of a fabricated alloy steel generally cylindrical storage tanlc.

The body portion .2 is made up of a plurality of generally rectangular curved plates 6 oi? steel that are fabricated in the factory and there es-' sembled with their long edges secured together by employment of thehorizontally disposed T- strips 5 to provide the panel t as. illustrated in additional support to the welds when the "i is completed.

The joints between the respective channels l are sealed by the butt straps it. These straps are generally thin in structure and are oi a widthscient to overlap the joint between two adjoining plates. The straps are fabricated from corrosion resistant alloy to prevent their corrosion by the fluid contained in the tank.

The field welds it secure the respective edges of the straps is to the inner surfacaoi'the respective plates t engaged by the edges. welds are also of corrosion resistant metal as they are exposed to the fluid contained in the tank in service.

The concrete base 5 upon which the beer tion 2 of the tank is-mounted preferably has a greater circumferential extent than that of the body portion 2. and has a concaved upper sur=-w face to supply greater space withinthe t The base i is covered with a corrosion resistant metal plate is which forms the-bottom oi the tank. At the juncture of the plate iii and side wall 2 of the tank, an angular circular ring it of similar alloy is welded to each to seal the loint.

The side wall 2 of the tons ma be secured to the base i by an suitable means. in the taste the lower edge of each panel d is nrovided with a not cirsk s I channel I'I. These channels are horizontally disposed and are secured to the lower edges of plates 4 and to the lower ends of channels i.

In the drawings illustrating the invention, anchor bolts iii are embedded in the concrete base I and are assembled with the channels I! by passing through suitable holes. Nuts i9 are then threaded onto the threads disposed at the ends oi the bolts i8 to secure the base and panels of the side walltogether.

The roof 3 of the storage tank comprises a plurality of panels 20 fabricated from corrosion resistant alloy metal similar to that employed in the side wall 2. v

- The outer ends of the panels 20 engage the upper ends of the plates 4 of the side wall 2 of the tank, and these parts are secured together by means of the arcuate angle members 2i disposedin anoverlapping manner at the joint between the root and side wall. One edge of the angle 'members 2| is welded to the panels 20, and the other edgeis welded to the side wall 2 by the welds 22. The angle members 2| are fabricated from corrosion resistant metal and the metal of the welds 22 are also of similar metal.

The employment 01 the angle members 2| and '23 serve to secure the panels 20 together similar to the construction oi the side wall. Intermediate T-irons 24 ma also be applied to the panels at the factory. In addition circumferentially disposed channels 25 are secured at the outer edge of each panel 20 and also at an intermediate radius thereof. 7

A central ring 28 secures the inner ends oi channels 23 together and has a circular flat alloy plate liner 2'' welded thereto on-the inside. A circular alloy strip 28 overlaps the inner edges or the alloy sheets oi'panels 2t and the outer edge of the plate 21 and is fillet welded thereto. A top fiat cover plate 28 may be welded to the upper edge of ring 26 to add rigidity to the structure and protect plate 21 from injury.

A manhole 29 with a removable alloy cover it I is provided in one oi. the side panels for assembly and cleaning purposes. Suitabl pipe connections, not shown, are provided to supply fluid to the tank and to withdraw fluid therefrom.

In assembling the'sectional storage tank, the base I is first constructed and provided with the tank bottom l as previously described. The side wall or body portion 2 is then gradually built up by assembling the preformed panels 8 upon the base I by employment of the features oi the invention. The preformedv rooi panels are then set intoplace and secured to each other and to the top 01' the side wall.

The butt straps l3 and the angle members it and 2i are preferably welded over the Joints on I the inside of the structure after the panels of the sembled. The structure is specially adapted for use as a corrosion resistant retainer for liquids such as H80: and provides a reliable, economical- 1y constructed storage tank.

. exerted by the liquid contained in the tank in service, and the channels because of their greater depth give the structure suflicient rigidity to resist the stresses to which the tank is subjected by the normal action of the elements.

Various embodiments of theinyention ma be I employed within the scope oi. the accompanying claims.

Iclaim: 1. A sectional storage tank of substantially cylindrical shape with a vertical axis and com- T prising a bottom, a plurality of curved segmental ing members at each vertical seam between adjapair together along a vertical line centrally of cent panels and having a substantial radial extent to provide rigidity and strength for withstanding externalforces, said panel sheets havingtheir aligned edges spaced apart with each edge partially overlapping the inner side of a corresponding reeniorcing memberand welded there I to, the adjacent re-enforcing members of each 7 pair meeting back to backand holding the corresponding panel sheet edges spaced apart, and a weld joining said re-enforcing members of each said space between the corresponding panel sheet edges. 1 2. A sectional storage tank of substantially cylindrical shape with a vertical axis and comprising a bottom, a plurality of curved segmental side wall panels of thin metal sheets designed to withstand the internal fluid pressures involved in service and supported on said bottom and extending for substantially the full height of the side walls of the tank, a pair of vertical re-enforcing members at each vertical seam between ad- J'acent panels and having a substantial radial extent to provide rigidity and strength for withstanding external forces, said panel sheets having their aligned edges spaced apart with each edge partially overlapping the inner side of a corresponding re-enforcing member and welded thereto, the adjacent i e-enforcing members of each pair meeting back to back and holding the corresponding panel sheet edges spaced apart, a weld joining said re-enforcing members of each pair together along a vertical line centrally of said space between the corresponding panel sheet edges, and a vertical strap bridging the space between said panel sheet edges. on the inside and welded at its vertical edges to the sheets.

3. A sectional storage tank of substantially cylindrical shape with a vertical axis and comprising a bottom, a plurality of curved segmental side wall panels of thin corrosion resistant alloy metal sheets designed to withstand the internal fluid pressures involved in service and supported on said bottom and extending for substantially the full height of the side walls of the tank, a pair of vertical re-enforcing members at each asaaees vertical seam between adjacent panels and having a substantial radial extent to provide rigidity and strength for withstanding external forces, said panel sheets having their aligned edges spaced apart with each edge partially overlapping the inner side of a corresponding re-enforcing member and welded thereto, the adjacent re-enforcing members of each pair meeting back to back and holding the corresponding panel sheet edges spaced apart, a weld joining said re-eniorcing members of each pair together along a vertical line centrally of said space between the corresponding panel sheet edges, and a vertical strip of corrosion resistant allow metal covering the space between said panel sheet edges on the inside and welded at its vertical edges to the sheets.

4. A sectional storage tank of substantially cylindrical shape with a vertical axis and comprising a bot turn, a plurality of curved segmental side wall panels of thin metal sheets designed to withstand the internal fluid pressures involved in service and supported on said bottom and extending for substantially the full heightof the side walls of the tank, a vertical channel re-enforcing member for each vertical edge of the several in the direction of the edge of the sheet, said panels being assembled with their adjacent edge ire-enforcing channels back to back, and welds Joining the backs of corresponding pairs of channel members along vertical lines at both the inner and outer extremities of the same.

5. A sectional storage tank of substantially cylindrical shape with a vertical axis and comprising a bottom, a plurality of curved segmental side wall panels of thin metal sheets designed to withstand the internal fluid pressures involved in service and supported on said bottom and extending for substantially the full height of the side in the direction of the edge of the sheet, said panels with the corresponding sheet edge par- 25 tially overlapping the inner flange and welded thereto and with the back of the channel lacing panels being assembled with their adjacent edge re-enforcing channels back to back, means for initially mechanically securing said adjacent channel members in position for welding, and welds joining the backs of corresponding pairs of channel members along vertical lines at both the inner and outer extremities of the same.

HENRY A. SCHmTZ, JR.

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