Blowout preventer operator locking system
First Claim
1. A subsea blowout preventer operator locking system comprising:
- a closure member;
a first piston rod comprising a first end coupled to the closure member;
a first operator housing comprising a first end coupled to a bonnet and a second end coupled to a head, wherein the first piston rod extends through the bonnet, wherein a second end of the first piston rod is at least partially disposed within the operator housing;
a first piston at least partially disposed within the first operator housing, wherein the first piston comprises a body and a flange, wherein the second end of the first piston rod is coupled to the body of the first piston;
a first sleeve slidingly disposed within a cavity disposed within the first piston, wherein the first sleeve is rotationally fixed relative to the first piston;
a first lock rod rotatably coupled to the head and threadedly engaged with the first sleeve, wherein rotation of the first lock rod axially translates the first sleeve relative to the first piston;
wherein one end of the first lock rod projects through the head and is operably engageable subsea from outside the first operator housing; and
wherein the first piston is lockable in an extended position by rotation of the first lock rod to extend the first sleeve, the first piston being held in position by contact of an end of the first sleeve with the cavity of the first piston.
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Accused Products
Abstract
A blowout preventer operator locking system comprises a piston rod having one end coupled to a closure member. The operator further comprises an operator housing having one end coupled to a bonnet and a second end coupled to a head. The piston rod extends through the bonnet onto the operator housing where it is coupled to a piston that is disposed within the operator housing. The piston comprises a body and a flange. A sleeve is slidingly disposed within a cavity disposed within the piston and is rotationally fixed relative to the piston. A lock rod is rotatably coupled to the head and is threadedly engaged with the sleeve so that rotation of the lock rod axially translates the sleeve relative to the piston.
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Citations
18 Claims
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1. A subsea blowout preventer operator locking system comprising:
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a closure member; a first piston rod comprising a first end coupled to the closure member; a first operator housing comprising a first end coupled to a bonnet and a second end coupled to a head, wherein the first piston rod extends through the bonnet, wherein a second end of the first piston rod is at least partially disposed within the operator housing; a first piston at least partially disposed within the first operator housing, wherein the first piston comprises a body and a flange, wherein the second end of the first piston rod is coupled to the body of the first piston; a first sleeve slidingly disposed within a cavity disposed within the first piston, wherein the first sleeve is rotationally fixed relative to the first piston; a first lock rod rotatably coupled to the head and threadedly engaged with the first sleeve, wherein rotation of the first lock rod axially translates the first sleeve relative to the first piston; wherein one end of the first lock rod projects through the head and is operably engageable subsea from outside the first operator housing; and wherein the first piston is lockable in an extended position by rotation of the first lock rod to extend the first sleeve, the first piston being held in position by contact of an end of the first sleeve with the cavity of the first piston. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A subsea blowout preventer comprising
a body comprising a bore therethrough; -
a cavity disposed through the body and intersecting the bore; a closure member moveably disposed within the cavity; a first piston rod comprising a first end coupled to the closure member; a first operator housing comprising a first end coupled to a bonnet and a second end coupled to a head, wherein the first piston rod extends through the bonnet, wherein a second end of the first piston rod is at least partially disposed within the operator housing; a first piston at least partially disposed within the first operator housing, wherein the first piston comprises a body and a flange, wherein the second end of the first piston rod is coupled to the body of the first piston; a first locking system comprising; a first lock rod rotatably coupled to the head and threadedly engaged with a first sleeve that is slidingly disposed within the first piston wherein rotation of the first lock rod axially translates the first sleeve relative to the first piston; wherein one end of the first lock rod projects through the head and is operably engageable subsea from outside the first operator housing; and wherein the first piston is lockable in an extended position by rotation of the first lock rod to extend the first sleeve, the first piston being held in position by contact of an end of the first sleeve with the cavity of the first piston. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification