THROUGH-HOLE SEALING DEVICE - KAWASAKI HEAVY IND LTD

Title:

THROUGH-HOLE SEALING DEVICE

Document Type and Number:

WIPO Patent Application WO/2000/077467

Kind Code:

A1

Abstract:

A through-hole sealing device capable of sealing a through hole through which a pipe is passed with a simple structure even if a pressure difference is large, wherein a plurality stages of gland packings (26) are arranged on the outer periphery of a pipe (21), the gland packings (26) are pressed radially inwardly by tubes (24) through retainers (30), the tubes (24) press the gland packings (26) against the outer peripheral surface of the pipe (21) by the pressure of a tightening gas fed through tightening gas access ports (31), the plurality stages of the tubes (24) and the gland packings (26) are held by ring spacers (30) and an outer tube (25), the pressing force of the gland packings (26) in sliding contact with the outer peripheral surface of the pipe (21) can be regulated easily by the regulation of the pressure inside the tubes (24), and a sealing performance can be increased easily with a simple structure.

Inventors:

KISHIMOTO MITSUHARU (JP)
YAJIMA KENICHI (JP)
KOZA YUKIHIKO (JP)
NOMOTO HIROKI (JP)

Application Number:

PCT/JP1999/003167

Publication Date:

December 21, 2000

Filing Date:

June 14, 1999

Export Citation:

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Assignee:

KAWASAKI HEAVY IND LTD (JP)
KISHIMOTO MITSUHARU (JP)
YAJIMA KENICHI (JP)
KOZA YUKIHIKO (JP)
NOMOTO HIROKI (JP)

International Classes:

F16J15/24; B60R21/26; C21B11/00; C21C5/40; C21C5/46; C21C7/00; F16J15/46; F27D7/06; F27D19/00; F27D99/00; F27D3/00; F27D3/16; F27D7/02; F27D21/02; F27D25/00; (IPC1-7): F27D7/06; C21B11/00; C21C5/40; C21C5/46; C21C7/00

Foreign References:

JPH01122562U	1989-08-21
JPH09279226A	1997-10-28
JPH1017923A	1998-01-20
JPH01172506A	1989-07-07

Other References: