Internal rotary valve actuator system
First Claim
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1. An actuator system comprising:
- a pressure vessel for containing pressure fluid;
a rotatable element positioned in said pressure vessel;
a ratchet wheel connected to said rotatable element for controllably rotating said rotatable element;
a ratchet member engageable with said ratchet wheel;
reciprocating means positioned at least partially within said pressure vessel and controllable from outside of said pressure vessel for reciprocating said ratchet member relative to said ratchet wheel to controllably rotate said ratchet wheel and thereby said rotatable element; and
a sealed chamber assembly disposed in said pressure vessel and within which at least a portion of said reciprocating means is positioned for protection from pressure fluid in said pressure vessel.
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Abstract
An actuator system for controllably rotating a rotary (valve) element positioned in a pressurized fluid vessel. A double-acting piston-cylinder intermittently rotates a ratchet wheel operatively connected to the rotary element. The cylinder is sealed within a bellows chamber assembly in the vessel and is controllable by a pressure source positioned outside of the vessel. The wheel is rotated by a ratchet member biased against the ratchet wheel and attached to the cylinder and reciprocable therewith. A ratchet pawl biased against the ratchet wheel prevents the reverse rotation of the wheel, and thereby of the rotary element.
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Citations
73 Claims
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1. An actuator system comprising:
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a pressure vessel for containing pressure fluid; a rotatable element positioned in said pressure vessel; a ratchet wheel connected to said rotatable element for controllably rotating said rotatable element; a ratchet member engageable with said ratchet wheel; reciprocating means positioned at least partially within said pressure vessel and controllable from outside of said pressure vessel for reciprocating said ratchet member relative to said ratchet wheel to controllably rotate said ratchet wheel and thereby said rotatable element; and a sealed chamber assembly disposed in said pressure vessel and within which at least a portion of said reciprocating means is positioned for protection from pressure fluid in said pressure vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. An actuator system for controllably rotating a rotatable element in a pressure fluid vessel, said actuator system comprising:
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a ratchet wheel connectable to a rotatable element positioned in a pressure fluid vessel for rotating the rotatable element; a ratchet member engageable with and biased towards said ratchet wheel; mounting means for mounting said rotatable wheel and said ratchet member inside of the pressure fluid vessel and generally adjacent to the rotatable element; piston-cylinder reciprocating means for reciprocating said ratchet member relative to said ratchet wheel to controllably rotate said ratchet wheel and thereby the rotatable element; and a sealed chamber assembly within which at least a portion of said piston-cylinder reciprocating means is positioned for protection from pressure fluid in the pressure fluid vessel when said reciprocating means is mounted therein by said mounting means. - View Dependent Claims (44, 45, 46, 47)
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48. An actuator system for controllably rotating a rotatable element, said actuator system comprising:
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a ratchet wheel connectable to a rotatable element for rotating the rotatable element; a ratchet member engageable with and biased towards said ratchet wheel; reciprocating means for reciprocating said ratchet member relative to said ratchet wheel to controllably rotate said ratchet wheel and thereby the rotatable element, said reciprocating means including a double-acting piston; and a protective sealed flexible bellows chamber assembly within which said double-acting piston is positioned; wherein said reciprocating means includes pressurizing means positioned outside of said protective sealed flexible bellows chamber assembly for pressurizing said double-acting piston. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61)
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62. An actuator system comprising:
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a pressure vessel containing pressurized hazardous fluid; a rotary element positioned in said pressure vessel; a ratchet wheel operatively connected to said rotary element such that rotation of said ratchet wheel rotates said rotary element; a double-acting cylinder mounted within said pressure vessel, controllable from outside of said pressure vessel and operatively connected to said ratchet wheel to controllably rotate said ratchet wheel and thereby said rotary element; and a sealed bellows chamber in said pressure vessel and in which said double-acting cylinder is disposed and protectively sealed from the pressurized hazardous fluid of said pressure vessel. - View Dependent Claims (63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73)
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Specification