Water tank

摘要

A cylindrical upstanding water tank is formed from a plurality of rows of corrugated curved panels bolted edge to edge with a liner extending over the cylindrical wall and support surface to contain the water within the tank. An access opening is formed in one panel of the cylindrical wall and includes a frame with a rectangular planar front flange and a rearwardly extending flange welded into the hole. Liner retention straps surround the hole to fasten an edge of the liner around the hole. An access cover plate is bolted to the front flange of the frame and carries a hoop strength plate which fastens to studs at the rear of the plane so that the plates are removable to allow service access to the interior of the tank.

主权项

1. A water tank comprising:
a plurality of rows of curved panels of corrugated sheet metal with horizontally extending corrugations where the panels of each row are bolted end edge to end edge to form a cylindrical wall portion and where the wall portions formed by the rows are stacked and bolted top edge to bottom edge to form a cylindrical wall extending from a bottom edge of the cylindrical wall mounted on a support surface to a top edge of the wall for containing water; a liner extending over the cylindrical wall and support surface to contain the water within the tank; and an access opening in the cylindrical wall comprising: a frame welded into a hole formed in one of the curved panels; wherein the frame includes a front planar flange onto which the access cover plate is fastened and a rearwardly extending flange which is welded to the panel at an edge of the hole and wherein the rearwardly extending flange of each of the connecting rails is deep enough in a direction into the hole such that a horizontal curved edge of the panel is welded onto the flange across its full width while being spaced from the front flange across its full width; wherein the curved edge of the corrugated panel is welded on the inside surface and on the outside surface to the rearwardly extending flange; a liner retention system surrounding the hole to fasten an edge of the liner around the hole; and an access cover plate arranged to be fastened to the frame so as to be removable therefrom to allow access to the interior of the tank inside the liner by a person for service within the interior.