Methods and devices for installing tank liners and gaskets

摘要

Disclosed are devices and methods useful for installing a liner and/or a gasket at the base of a tank, e.g., between the horizontal lips of a tank base chime and a tank wall panel. Devices including hollow cylindrical cutters are used to puncture the liner and/or gasket material. In one device, a depressable pedal causes the hollow cylindrical cutters to move upwardly to puncture the liner and/or gasket material. In an alternative device, at least one pneumatic cylinder causes the hollow cylindrical cutters to move downwardly to puncture the liner and/or gasket material. Another device installs bolts through the horizontal lips of the tank base chime and tank wall panel and the punctured liner and/or gasket material there between.

主权项

1. A device for in-situ puncturing of a liner and/or gasket during installation of the liner and/or the gasket between a horizontal lip of a base chine and a horizontal lip of a tank wall panel comprising:
a. a pair of end supports spaced a distance apart and adapted to fit securely between the horizontal lip of the base chime and the horizontal lip of the tank wall panel; b. a pair of cams, each cam adjacent and rotatably coupled to one of the end supports and having a cam center and a cam point; c. a first rod between and connecting the cam centers; d. a second rod between and connecting the cam points; e. a rigid support having an upper surface and a plurality of holes there through arranged in a row of holes having a first end and a second end and wherein the rigid support is affixed to the second rod; f. a plurality of circumferential holders affixed on the upper surface of the rigid support wherein each of the plurality of circumferential holders corresponds to each of the plurality of holes such that the plurality of circumferential holders is arranged in a row of circumferential holders having a first end and a second end; and g. a depressable pedal pivotally connected to the rigid support and connected by linkages to the cams for controlling the vertical movement of the rigid support;
wherein when the pair of end supports are fit securely between the horizontal lip of the base chime and the horizontal lip of the tank wall panel, the upper surface of the rigid support is below the horizontal lip of the tank wall panel, and wherein when the pedal is depressed, the rigid support moves upwardly towards the horizontal lip of the tank wall panel.