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Title:
SUBSEA ELECTRIC ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2017/016690
Kind Code:
A3
Abstract:
A subsea electric actuator (100) includes a housing (1) configured to be filled with dielectric oil, an electric motor (2), a brake (3), a clutch (4), and a spring (9). The clutch (4) and the brake (3) are configured to maintain the spring (9) in a compressed position. In certain embodiments, the actuator (100) further includes a planetary gear (5) and a multi-turn gear assembly, such that the planetary gear (5) and the multi-turn gear assembly are configured to multiply the torque provided by the electric motor (2). The actuator (100) can further include a ball screw (7) and a nut screw (8) configured to convert the torque provided by the motor (2) into linear thrust to compress the spring (9).

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Inventors:
GARRONE MARCO (IT)
AMBROSINI IVAN (IT)
CAZZOLA TIZIANO (IT)
Application Number:
PCT/EP2016/059900
Publication Date:
April 06, 2017
Filing Date:
May 03, 2016
Export Citation:
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Assignee:
PETROLVALVES S R L (IT)
International Classes:
E21B33/035; F16K31/04; F16H25/20; F16K31/50
Domestic Patent References:
WO1993000539A11993-01-07
WO2015040476A22015-03-26
WO2006071124A12006-07-06
WO2011094084A22011-08-04
WO2014069516A12014-05-08
Foreign References:
US8636262B22014-01-28
US5067345A1991-11-26
US8342478B12013-01-01
US20030150411A12003-08-14
US4556963A1985-12-03
Attorney, Agent or Firm:
SPINA, Alessandro et al. (IT)
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