Title:
NON-CUTOFF FLOW PASSAGE CLOSING DEVICE
Document Type and Number:
Japanese Patent JP2015055287
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a non-cutoff flow passage closing device capable of attaining an easy insertion of a closing bag to be inserted into a pipe flow passage as well as its prevention of damage under a non-cutoff flow state and capable of positively closing the pipe flow passage.SOLUTION: This invention relates to a non-cutoff flow passage closing device in which an insertion guide cylinder 22 internally fitted and stored in a closing case 20 under a state where a closing bag 4 is shrunk can be moved within the closing case 20 and a branch pipe part B along an axis core Y of the branch pipe part B until at least a part of the extremity end of the insertion guide cylinder 22 becomes an abutting attitude where it abuts against an outer surface side circumferential edge 2a of a branch port 2 at an outer circumferential surface 1a of a fluid pipe 1, and a shaft core adjustment part 50 that can be slid and contacted with the inner surface of the insertion guide cylinder 22 is positioned at a location corresponding to the branch port 2 in a radial direction of the fluid pipe 1 under a state in which the closing bag 4 within the insertion guide cylinder 22 kept under the abutted attitude can be inserted from within the insertion guide cylinder 22 into an in-pipe flow passage 3 of the fluid pipe 1 through the branch port 2 along the axis core Y of the branch pipe part B and positioned at a prescribed in-pipe flow passage closing position.
Inventors:
YAMAMOTO DAISUKE
Application Number:
JP2013188626A
Publication Date:
March 23, 2015
Filing Date:
September 11, 2013
Export Citation:
Assignee:
WATERWORKS TECHNOLOGY DEV ORG
International Classes:
F16L55/00; F16L55/12
Domestic Patent References:
| JPH0875077A | 1996-03-19 | |||
| JP2013130244A | 2013-07-04 | |||
| JPH03213797A | 1991-09-19 | |||
| JPS5047221A | 1975-04-26 | |||
| JPS6128958Y2 | 1986-08-27 | |||
| JP4521956B2 | 2010-08-11 | |||
| JP2760674B2 | 1998-06-04 | |||
| JPH0875077A | 1996-03-19 |
Attorney, Agent or Firm:
Shuichiro Kitamura
Takashi Ota
Masahiro Miyachi
Nakajo 均
Takashi Ota
Masahiro Miyachi
Nakajo 均