Cam locked air gap baffle assembly for a dynamoelectric machine
First Claim
1. A barrier system for air gaps between stators and rotors in dynamoelectric machines, comprising:
- at least one air gap baffle adapted to be positioned between a stator assembly and a rotor assembly;
at least one locking cam assembly configured to be coupled to the at least one air gap baffle and having at least one cam for receiving a locking tool including an inner cavity extending through the cam and at least one keyway in an inner wall of the inner cavity for receiving a key of the locking tool, wherein the at least one cam is movable between a first position in which the cam has a first diameter and a second position in which the cam has a second diameter that is greater than the first diameter; and
at least one locking strip coupled to a stator slot wedge in a position to contact the cam.
3 Assignments
0 Petitions
Accused Products
Abstract
A baffle system for routing cooling fluids through a dynamoelectric machine. The baffle system may include a locking cam mechanism for releaseably attaching a baffle to a stator assembly to substantially eliminate an annular air gap between a rotor assembly and a stator assembly. The baffle system may include a locking strip attached to a stator slot wedge to seal the locking cam mechanism and baffle to the stator assembly. In other embodiments, the baffle system may include a friction pad for sealing the locking cam mechanism and baffle to the stator assembly. The baffle system may also include a locking tool for simultaneously, or individually, moving the locking cam mechanism from an unlocked position to a locked position, or vice versa.
-
Citations
31 Claims
-
1. A barrier system for air gaps between stators and rotors in dynamoelectric machines, comprising:
-
at least one air gap baffle adapted to be positioned between a stator assembly and a rotor assembly;
at least one locking cam assembly configured to be coupled to the at least one air gap baffle and having at least one cam for receiving a locking tool including an inner cavity extending through the cam and at least one keyway in an inner wall of the inner cavity for receiving a key of the locking tool, wherein the at least one cam is movable between a first position in which the cam has a first diameter and a second position in which the cam has a second diameter that is greater than the first diameter; and
at least one locking strip coupled to a stator slot wedge in a position to contact the cam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A barrier system for air gaps between stators and rotors in dynamoelectric machines, comprising:
-
at least one air gap baffle adapted to be positioned between a stator assembly and a rotor assembly;
at least one locking cam assembly configured to be coupled to the at least one air gap baffle and having at least one cam for receiving a locking tool including an inner cavity extending through the cam and at least one keyway in an inner wall of the inner cavity for receiving a key of the locking tool, wherein the at least one cam is movable between a first position in which the cam has a first diameter and a second position in which the cam has a second diameter that is greater than the first diameter; and
at least one friction pad coupled to a stator slot wedge in a position to contact the cam. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A barrier system for air gaps between stators and rotors in dynamoelectric machines, comprising:
-
at least one air gap baffle adapted to be positioned between a stator assembly and a rotor assembly and including at least one slot;
at least one locking cam assembly configured to be positioned in the at least one slot of the at least one air gap baffle and having at least one cam including an inner cavity extending through the cam and at least one keyway in an inner wall of the inner cavity for receiving a locking tool, wherein the at least one cam is movable between a first position in which the cam has a first diameter and a second position in which the cam has a second diameter that is greater than the first diameter; and
at least one locking tool having a substantially cylindrical shaft with at least one key extending from an outer surface of the shaft and adapted to be received in the at least one keyway in the at least one cam;
wherein the at least one locking tool is capable of moving a plurality of locking cam assemblies to locked positions substantially simultaneously. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. A method of sealing air gaps between stators and rotors in dynamoelectric machines, comprising:
-
positioning at least one air gap baffle between a stator assembly and a rotor assembly;
positioning at least one locking cam assembly between the stator and rotor assemblies, wherein the at least one cam includes an inner cavity extending through the cam and at least one keyway in an inner wall of the inner cavity for receiving a locking tool, and wherein the at least one cam is movable between a first position in which the cam has a first diameter and a second position in which the cam has a second diameter that is greater than the first diameter;
positioning at least one locking strip proximate to the at least one air gap baffle;
inserting a portion of at least one locking tool having at least one key extending from an outer surface of the at least one locking tool into the inner cavity of the at least one cam; and
rotating the at least one locking tool which causes the cam to rotate and hold the at least one air gap baffle in position. - View Dependent Claims (30)
-
-
31. The method of claim 39, wherein positioning at least one locking cam assembly comprises positioning a plurality of air gap baffles and a plurality of locking cam assemblies axially in a dynamoelectric machine, and inserting at least one locking tool through the cams of the locking cam assemblies so that keys on the locking tool mate with keyways in the cams, and the at least one locking tool is rotated so that the plurality of locking cam assemblies are locked substantially simultaneously.
Specification