Anti-alteration wellhead vault
a wellhead vault and anti-alteration technology, applied in the field of wellhead protection systems, can solve the problems of only being moved, too heavy for human lifting, and the weight of the vault is so high that it cannot be removed, so as to improve the run-off of rain and snow, and less weather-related degradation of the enclosure
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second embodiment
[0079]FIG. 5 is a front elevation view of the present invention, having a square foot print. This anti-alteration wellhead vault system, designated generally by the 10a, includes precast concrete bell-shaped vault 11a. The vault 11a has lifting elements 12a mounted on the side of the vault 11a. The lifting element 12a is in the form of a loop of a metal bar the ends of which are embedded in the concrete of the vault 11a. The lifting element 12a allows the vault 11a to be placed and lifted using heavy construction equipment. The vault 11a also includes air vents 13a and 14a (shown below).
[0080]FIG. 6 is a plan view of the embodiment shown in FIG. 5. The vault system 10a includes the vault 11a. The vault 11a includes the lifting element 12a, and the air vents 13a and 14a. The vault 11a might be sitting on a concrete pad which is positioned in the ground, around a wellhead.
[0081]FIG. 7 is a sectional front elevation view of the embodiment shown in FIG. 5, as seen along the view line VI...
third embodiment
[0083]FIG. 9 is the well vault 11b present invention in which a step-like ledge 41 is provided around the outside of the well vault 11b. This ledge provides convenient support for a person to maintain the upper portion of the vault 11b, or to assist in connecting the lifting elements 12b to the heavy lifting equipment for positioning the vault 11b. This anti-alteration wellhead vault system, designated generally by the 10b, includes precast concrete bell-shaped vault 11b. The vault 11b has lifting elements 12b mounted on the top of the vault 11b. The lifting element 12b is in the form of loops of a metal bars the ends of which are embedded in the concrete of the vault 11b. The lifting element 12b allows the vault 11b to be placed and lifted using heavy construction equipment. The vault 11b also includes air vents 13b and 14b. The vault 11b be is sitting on a flat concrete pad 17 that is buried in the ground 18.
[0084]FIG. 10 is a plan view of the embodiment shown in FIG. 9. This thir...
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