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Vertical Underground Storage Tank and Method of Installing and Forming the Same

a vertical underground storage and tank technology, applied in water conservation, transportation and packaging, sewage draining, etc., can solve the problems of large footprint, limited installation, time and cost, and large planning,

Inactive Publication Date: 2016-10-20
EFTEKHARZADEH SHAHRIAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention provides a new type of vertical underground storage tank that can be partially formed in-situ with minimal excavation, footprint, and without dewatering. The invention also provides improved elements and arrangements for this purpose that are cost-effective, reliable, and fully effective in achieving its intended purposes.

Problems solved by technology

The horizontal placement of the conventional underground storage tanks creates large footprint that limits their installation to locations on private land of sufficient size.
The open excavation method involves digging, hauling, and backfilling of large volumes of soil that entails significant planning, permitting, time, and cost.
In addition, there is the need for dewatering in locations of high groundwater, which requires special permit and incurs significant additional complexity, time, and cost.

Method used

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  • Vertical Underground Storage Tank and Method of Installing and Forming the Same
  • Vertical Underground Storage Tank and Method of Installing and Forming the Same
  • Vertical Underground Storage Tank and Method of Installing and Forming the Same

Examples

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embodiment 100

[0032]FIG. 2 is a cut section of the same embodiment 100 of the present invention as in FIG. 1. Vertical cylinder vessel 101 is placed inside vertical bored underground shaft 111 of marginally larger diameter and roughly the same depth below ground 112 as the length of the vessel 101. Vessel 101 is supported level in vertical position on its bottom 105 with access hatch 103 at roughly the same elevation as the ground 112, leaving a roughly uniform annular space between the vessel 101 and the shaft 111.

[0033]FIG. 3 is a cut section of the same embodiment 100 of the present invention as in FIG. 2. Vertical underground storage tank 100 is comprised of a composite of inner vessel 101 and outer concrete shell 121 installed and formed in position underground inside vertical shaft 111. Tank 100 has an access hatch 103 at the top flush with ground 112. The volume of soil removed to accommodate tank 100 equals is the gross volume of the tank 100 meaning that excavation is minimized. Also, th...

embodiment 200

[0035]FIG. 5 is a cut section through the vessel of the same embodiment 200 of the present invention as in FIG. 4. Port 231 above transition 204 to bottom 205 of vessel 201 is equipped with inflatable plug 241 that serves as the open / close device for port 231. Inflatable plug 241 is in uninflated “open” position during installation and can be inflated to “closed” position by air tube that leads to outside of vessel 201.

[0036]FIG. 6 is a cut section through the same embodiment 200 of the present invention as in FIG. 4. Vertical cylinder vessel 201 is inserted inside bored shaft 211 while port 231 shown in FIG. 5 is “open” allowing groundwater 213 to enter inside vessel 201. Air tube 242 extends outside vessel 201 and is pressurized to close inflatable plug 241 shown in FIG. 5 once vessel 201 is in position. Vessel 201 is supported in level vertical position on its bottom 205 shown in FIG. 5 with access hatch 203 at roughly the same elevation as the ground 212, leaving a roughly unifo...

embodiment 300

[0041]FIG. 11 is a cut section through the same embodiment 300 of the present invention as in FIG. 10. Both the first vertical cylinder vessel 301 and the second vertical cylinder vessel 302 are inside their respective bored vertical shafts 311 and 302, with their connection flanges 331 and 331 aligned.

[0042]FIG. 12 is a cut section through the same embodiment 300 of the present invention as in FIG. 10. There is a horizontal underground boring 351 between the connection flanges 331 and 332 of the two vertical cylinder vessels 301 and 302 inside their corresponding bored underground shafts 311 and 312. Horizontal underground boring techniques is used for trenchless pipe laying in water, sewer, and gas pipeline industries and is widely available.

[0043]FIG. 13 is a cut section through the same embodiment 300 of the present invention as in FIG. 10. There is a pipe sleeve 352 inserted in the horizontal boring 351 shown in FIG. 12 between the connection flanges 331 and 332 of the two vert...

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Abstract

A vertical underground storage tank that is installed and partly in-situ formed with minimized excavation, minimum footprint, and without dewatering.

Description

FIELD OF THE INVENTION[0001]The present invention pertains to underground storage tanks. More specifically, the present invention provides a new type of vertical underground storage tank that is installed and partly in-situ formed with minimized excavation, minimum footprint, and without dewatering.BACKGROUND OF THE INVENTION[0002]Underground storage tanks have historically been used for the storage of fuel and hydrocarbons, such as gasoline, fuel oil, diesel oil, toxic fluids or various chemicals. Increasingly, such tanks are being used for rainwater harvesting for conservation and water quality control to comply with discharge regulations. Conventionally, underground storage tanks are cylindrical in shape with dome or egg-shaped end caps at either end of the cylinder and are placed horizontally in an open excavation ultimately backfilled to original grade. Recently, for rainwater harvesting such tanks are available in a variety of shapes, sizes, and materials.[0003]The horizontal ...

Claims

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Application Information

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IPC IPC(8): E03F1/00E03F5/10B65D88/76E03B3/02
CPCE03F1/003B65D88/76E03F5/10E03B3/02B65D88/027E03B3/03Y02A20/108Y02A20/00
Inventor EFTEKHARZADEH, SHAHRIAR
Owner EFTEKHARZADEH SHAHRIAR
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