Title:
STEPWISE PRESSURE REDUCTION TYPE PRESSURE-RESISTANT PIPE
Document Type and Number:
WIPO Patent Application WO/2022/091671
Kind Code:
A1
Abstract:
[Problem] The present invention provides a lightweight pressure-resistant pipe by placing a pipe inside a pipe and retaining a gap between the inner pipe and the outer pipe by a support while reducing a diameter of the outer pipe at both ends thereof. [Solution] This pressure-resistant pipe is characterized in that, by placing a pipe inside a pipe and retaining a gap between the inner pipe and the outer pipe by a support while reducing a diameter of the outer pipe at both ends thereof, the pressure is dispersed by creating a pressure difference between fluids flowing through the inner pipe and the outer pipe and reducing a pressure ratio with respect to the outside stepwise, and the fluid flowing through the inside of the pipe is per se used for pressure resistance.
Inventors:
TSUCHIHASHI YOSHIHIDE (JP)
Application Number:
PCT/JP2021/035471
Publication Date:
May 05, 2022
Filing Date:
September 27, 2021
Export Citation:
Assignee:
TSUCHIHASHI YOSHIHIDE (JP)
International Classes:
F16L9/18
Foreign References:
| JPH02236094A | 1990-09-18 | |||
| JPH02116095U | 1990-09-17 | |||
| JPS59174310U | 1984-11-21 | |||
| US2740616A | 1956-04-03 | |||
| JPS5880691U | 1983-05-31 | |||
| JPH0312091U | 1991-02-07 | |||
| JP2005519237A | 2005-06-30 |
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