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2 194 902

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C1

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IPC

(21) (22)

Application

2001117698/06, 2001-06-25

(24)

Start date

2001-06-25

(22)

Actual filing date

2001-06-25

(45)

Published

2002-12-20

(72)

Inventor

Bikbulatov I.Kh.Sobolev A.V.Shulaev N.S.Ivanov S.P.

(73)

Holder

Ufimskij Gosudarstvennyj Neftjanoj Tekhnicheskij Universitet

ENVELOPE OF PIPE LINE FOR LOCALIZING LEAKY AREAS Russian patent published in 2002 - IPC

Abstract RU 2194902 C1

FIELD: construction engineering; erection of double pipes for avoidance of spreading of product in inter-pipe space. SUBSTANCE: polymer envelope has passages in its interior and supports for pipe line formed over entire length of inner surface of envelope by one or several longitudinal projections which are spirally twisted similarly to passages; helix angle of spiral, number and width of projections are selected depending on conditions of contact strength and stability of envelope shape and required degree of localization of leakage. EFFECT: avoidance of contamination of surrounding medium. 1 dwg

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RU 2 194 902 C1

Authors

Bikbulatov I.Kh.

Sobolev A.V.

Shulaev N.S.

Ivanov S.P.

Dates

2002-12-20—Published

2001-06-25—Filed

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