TURBINE ROTOR RETAINING SYSTEM
First Claim
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1. A rotor retaining system for a rotor assembly of a gas turbine engine, the rotor assembly including a shaft, a rotor disc mounted on the shaft, a plurality of blades extending radially from the rotor disc and a cover plate attached to a side of the rotor disc, the rotor retaining system comprising:
- a first retaining nut threadingly engaging the shaft and retaining the rotor disc in position on the shaft;
a second retaining nut disposed around the first retaining nut, threadingly engaging the rotor disc and retaining the cover plate in position relative to the rotor disc;
a washer engaging both the first and second retaining nuts to interlock one retaining nut relative to another to impede relative rotation between first and second retaining nuts; and
a wire removably engaging one of the first and second retaining nuts and disposed axially adjacent to the washer to retain the washer in position.
1 Assignment
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Accused Products
Abstract
A rotor retaining system for a rotor assembly of a gas turbine engine includes a washer interlocking multiple retaining nuts to prevent relative rotation. The retaining nuts retain a rotor disc and a cover plate in position, respectively. A wire is provided to retain the washer in position and which may dampen vibration during engine operation.
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Citations
17 Claims
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1. A rotor retaining system for a rotor assembly of a gas turbine engine, the rotor assembly including a shaft, a rotor disc mounted on the shaft, a plurality of blades extending radially from the rotor disc and a cover plate attached to a side of the rotor disc, the rotor retaining system comprising:
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a first retaining nut threadingly engaging the shaft and retaining the rotor disc in position on the shaft; a second retaining nut disposed around the first retaining nut, threadingly engaging the rotor disc and retaining the cover plate in position relative to the rotor disc; a washer engaging both the first and second retaining nuts to interlock one retaining nut relative to another to impede relative rotation between first and second retaining nuts; and a wire removably engaging one of the first and second retaining nuts and disposed axially adjacent to the washer to retain the washer in position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A rotor assembly of a gas turbine engine comprising:
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a shaft; a rotor disc mounted on the shaft and retained in position by a first retaining nut which threadingly engages the shaft in a first rotational direction ; a plurality of blades received in circumferentially spaced slots in the rotor disc and axially extending across the rotor disc; a cover plate attached to the rotor disc and retaining the blades in the respective slots of the rotor disc, the cover plate being retained in position relative to the rotor disc, by a second retaining nut which threadingly engages the rotor disc in a second rotational direction opposite to the first rotational direction; a washer positioned adjacent the first and second retaining nuts to impede relative rotation between the first and second retaining nuts; and a wire removably engaging one of the first and second retaining nuts and disposed axially adjacent to the washer to retain the washer in position. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method for retaining components of a rotor assembly of a gas turbine engine, the method comprising:
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a) providing a first retaining nut threadingly engaging the rotor assembly in a first rotational direction for retaining a first one of the components in position; b) providing a second retaining nut threadingly engaging the rotor assembly in a second rotational direction opposite the first rotational direction, for retaining a second one of the components in position; c) using a washer to interlock the first and second retaining nuts one relative to another to impede relative rotation between the first and second retaining nuts; and d) engaging a wire to one of the first and second retaining nuts for retaining the washer in position. - View Dependent Claims (17)
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Specification