Title:
DEVICE AND METHOD FOR PERFORMING WORK IN PIPELINES
Document Type and Number:
WIPO Patent Application WO/2011/001843
Kind Code:
A2
Abstract:
Provided are a method and device for performing work in pipelines, whereby it is possible to exert an extremely large driving force within a pipeline. Moreover, provided are a method and device for performing work in pipelines, which are provided with a means for forcibly drying the wet inner surface of a pipeline. The device is provided with an annular pressure boundary seal with a free-end portion that comes into contact with the inner wall of the pipeline. The seal separates the space within the pipeline into two spaces, space (A) and space (B), using the seal as a boundary. The end of space (A) adjacent to the seal is connected with a suction pump via a hose, while the other end of space (A), which is not adjacent to the seal, is connected with the fluid surrounding the pipeline via a vacuum breaker that adjusts the negative pressure within space (A). A hose is disposed in space (B) and the end of space (B), which is not adjacent to the seal, is connected with the fluid that surrounds the pipeline.
Inventors:
URAKAMI Fukashi (608 Maruyoshi Bldg, konandai Konan-k, Yokohama-shi Kanagawa 54, 〒2340054, JP)
Application Number:
JP2010/060426
Publication Date:
January 06, 2011
Filing Date:
June 21, 2010
Export Citation:
Assignee:
URAKAMI LLC (4-17-24, Konandai Konan-ku, Yokohama-sh, Kanagawa 54, 〒2340054, JP)
ウラカミ合同会社 (〒54 神奈川県横浜市港南区港南台４丁目１７番２４号 Kanagawa, 〒2340054, JP)
ウラカミ合同会社 (〒54 神奈川県横浜市港南区港南台４丁目１７番２４号 Kanagawa, 〒2340054, JP)
International Classes:
B08B9/04
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