公开(公告)号：US11286745B2

公开(公告)日：2022-03-29

申请号：US16962835

申请日：2019-01-11

Applicant: FMC Kongsberg Subsea AS

Inventor： Geir Tandberg ,  Øivind Rokne

IPC: E21B34/04 ,  F16K31/04 ,  F16K31/143 ,  F16K3/02

Abstract: It is described a subsea electric actuator (100) operating a linear valve (200), the actuator (100) comprising a roller-screw (2) for translating a rotational movement of a motor (3) to a linear movement of a gate rod (4) operating the valve (200), the actuator (100) comprising: —an actuator housing (101); —an outer roller screw part (2′) rotationally connected to the motor (3) and comprising internal threads forming a first part of a first connection (10), —an inner roller screw part (2″) comprising external threads forming a second part of the first connection (10) and being arranged inside the outer roller screw part (2′), a surface of the inner roller screw part (2″) having a first interface forming a first part of a second connection (20′; 20″) connecting the inner roller screw part (2″) to a non-rotational part of the actuator (100), the second connection (20′, 20″) is configured to rotationally lock the inner roller screw part (2′) giving linear movement of the inner roller screw part (2″) when the outer roller screw (2′) is rotated, —a gate rod (4) arranged axially movable inside the inner roller screw part (2″), the external surface of the gate rod (4) comprising an interface forming a first part of a third connection (30′; 30″), —an override housing (6) arranged outside the gate rod (4) and adjacent the inner roller screw part (2″) forming an axial stop for the inner roller screw part (2″), the override housing (6) comprising an interface forming a second part of the third connection (30′; 30″), and wherein, when the third connection (30′; 30″) is connected, the inner roller screw part (2″) is locked to the gate rod (4) such that the gate rod (4) follows any axial movement of the inner roller screw part (2″), and when the third connection (30′; 30″) is disconnected, the gate rod (4) is allowed to move in the axial direction relative the inner roller screw part (2″) such that the linear valve (200) can be operated independently of the motor (3), outer roller screw part (2′) and inner roller screw part (2″). It is further described a method of performing override of a subsea electric actuator (100).

公开(公告)号：US20240254858A1

公开(公告)日：2024-08-01

申请号：US18566613

申请日：2022-06-24

Applicant: FMC Kongsberg Subsea AS

Inventor： Øivind Rokne ,  Heyn Halfdan Magnus

IPC: E21B34/04 ,  F16K31/50

CPC classification number: E21B34/04 ,  F16K31/508

Abstract: A valve operating device (1) for operating a subsea valve (100), the valve operating device (1) comprises: —a housing (10); —thrust bearings (12) supported by the housing (10); —a chamber (20) within the housing (10), wherein the chamber (20) comprises a first part of a linear guide (21); —a rotational shaft (30) comprising a first end with an external interface (31) outside the chamber (20) and a second end inside the chamber (20), —a linear shaft (40) arranged within the chamber (20), the linear shaft (40) comprising a first portion (41) and a second portion (42), wherein the first portion (41) comprises threaded portion (43) connected to the threaded portion (34) of the rotational shaft (30) and wherein —the rotational shaft (30) comprises a pre-machined hole (36) extending over a part of an axial length of the rotational shaft (30).

公开(公告)号：US20210363857A1

公开(公告)日：2021-11-25

申请号：US16962835

申请日：2019-01-11

Applicant: FMC Kongsberg Subsea AS

Inventor： Geir Tandberg ,  Øivind Rokne

IPC: E21B34/04 ,  F16K3/02 ,  F16K31/04 ,  F16K31/143

Abstract: It is described a subsea electric actuator (100) operating a linear valve (200), the actuator (100) comprising a roller-screw (2) for translating a rotational movement of a motor (3) to a linear movement of a gate rod (4) operating the valve (200), the actuator (100) comprising: —an actuator housing (101); —an outer roller screw part (2′) rotationally connected to the motor (3) and comprising internal threads forming a first part of a first connection (10), —an inner roller screw part (2″) comprising external threads forming a second part of the first connection (10) and being arranged inside the outer roller screw part (2′), a surface of the inner roller screw part (2″) having a first interface forming a first part of a second connection (20′; 20″) connecting the inner roller screw part (2″) to a non-rotational part of the actuator (100), the second connection (20′, 20″) is configured to rotationally lock the inner roller screw part (2′) giving linear movement of the inner roller screw part (2″) when the outer roller screw (2′) is rotated, —a gate rod (4) arranged axially movable inside the inner roller screw part (2″), the external surface of the gate rod (4) comprising an interface forming a first part of a third connection (30′; 30″), —an override housing (6) arranged outside the gate rod (4) and adjacent the inner roller screw part (2″) forming an axial stop for the inner roller screw part (2″), the override housing (6) comprising an interface forming a second part of the third connection (30′; 30″), and wherein, when the third connection (30′; 30″) is connected, the inner roller screw part (2″) is locked to the gate rod (4) such that the gate rod (4) follows any axial movement of the inner roller screw part (2″), and when the third connection (30′; 30″) is disconnected, the gate rod (4) is allowed to move in the axial direction relative the inner roller screw part (2″) such that the linear valve (200) can be operated independently of the motor (3), outer roller screw part (2′) and inner roller screw part (2″). It is further described a method of performing override of a subsea electric actuator (100).