Title:
VACUUM RELIEF UNIT WITH MEANS PREVENTING THE EFFECTS OF AN ACCIDENT
Document Type and Number:
WIPO Patent Application WO2002060751
Kind Code:
A8
Abstract:
The invention relates to a vacuum relief unit for pressure equalisation between the ambient atmosphere and a tank in a tanker, wherein the vacuum relief unit comprises: a valve housing (10) with a first opening (12), whereby the valve housing (10) is able to communicate with the tank, and a second opening (24) with a seat (30) for a valve body (40) that is configured for being conveyable into the valve housing (10) to permit inflow of air to the tank; and a mechanism (100) configured for being able to prevent passage of seawater through the valve housing (10) in case of an accident, wherein the tanker is at least partially immersed into seawater, which mechansim (100) features a first movable part (160) that is arranged outside the valve housing (10) and whose movement can be controlled by the liquid pressure of the sea water; a second movable part (150) that can be advanced within the valve housing (10) and that is movably coupled to the first movable part (160). The invention is characterised in that the second movable part (150) is configured for being conveyable to abut on the valve body (40) by an increasing movement of the first movable part (160) to cause the valve body (40) to return to its abutment on the seat (30).
Inventors:
SOERENSEN EMIL AARESTRUP (CH)
Application Number:
PCT/DK2001/000850
Publication Date:
April 29, 2004
Filing Date:
December 20, 2001
Export Citation:
Assignee:
PRES VAC ENGINEERING AS (DK)
SOERENSEN EMIL AARESTRUP (CH)
SOERENSEN EMIL AARESTRUP (CH)
International Classes:
B63J2/08; B63B1/00; B63B25/08; B63B25/14; F16K17/36; F16K24/06; (IPC1-7): B63B25/08
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