Patent · US Active

Device for closing a drive casing pipe

US9922735B2 · kind B2 · utility

0Cited by

1References

17Claims

0Family size

Assignee

AREVA GMBH · US

Inventors

Erhard Müller · Stuttgart, DE
Paul Huprich · Fairview Avenue, DE
Arne Brockmöller-Meiners · Rickling, DE

Key dates

Filing date	Aug 9, 2013
Grant date	Mar 20, 2018
Priority date	—
Expiry date	Apr 22, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E30/30
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a device for closing a pipe opening, opening upwards, of a drive casing pipe accommodating the control rod drive of a boiling water reactor, said device comprising a closure plug with a plug housing, opening downwards, a sealing element guided axially so as to be movable within the plug housing, which element has a sealing face providing a sealing contact with an annular counter face defining the pipe opening, a locking element provided to fix the plug housing on the drive casing pipe, and a spring, which is supported by the upper end thereof on the plug housing and by the lower end thereof on the sealing element and holds said element in a lower end position.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.