Polymer injection method for blocking piping in dikes and dams
US8293325B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2010 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Jan 3, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A10/11
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A polymer injection method and apparatus for blocking piping in dikes and dams, uses non-water reacted two-component polymeric material to produce a hydra-insensitive expanding polymer for blocking piping channel. A transferring device is provided to the method, which includes an injection gun, an injector, and a hollow tube, wherein the injection gun connects with an entrance end of the hollow tube through the injector, and an outlet end of the hollow tube inserts into the entrance of the piping channel. The two components of the polymeric material are respectively transported to the injection gun, and are mixed and injected from the gun with high pressure, through the injector, to the hollow tube, and then pushed into the piping channel. Under the chemical reaction, the mixed material expands inside the receiver and becomes foamed solid from liquid, and then the polymer receiver inflates and blocks the piping channel quickly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.