Ventilated creepage blocks
First Claim
1. A creepage block for a turbine rotor slot in which coil windings are received, wherein the creepage block is, in use, radially sandwiched between the windings and a wedge block, and wherein aligned radial cooling passages are formed in axially spaced locations in said windings and said wedge block, said creepage block comprising:
- a pair of solid half blocks in substantially parallel side-by-side relationship, said blocks held in laterally spaced relation by a plurality of discrete spacers.
1 Assignment
0 Petitions
Accused Products
Abstract
A creepage block for a turbine rotor slot in which coil windings are embedded, wherein the creepage block is sandwiched between the windings and a wedge block, and wherein aligned radial cooling passages are formed in axially spaced locations in the windings and the wedge block. The creepage block includes a pair of solid half blocks in substantially parallel relationship, the blocks held in laterally spaced relation by a plurality of discrete spacers which may be dowel pins.
35 Citations
10 Claims
-
1. A creepage block for a turbine rotor slot in which coil windings are received, wherein the creepage block is, in use, radially sandwiched between the windings and a wedge block, and wherein aligned radial cooling passages are formed in axially spaced locations in said windings and said wedge block, said creepage block comprising:
a pair of solid half blocks in substantially parallel side-by-side relationship, said blocks held in laterally spaced relation by a plurality of discrete spacers. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
8. A creepage block for a turbine rotor slot in which coil windings are received, wherein the creepage block is, in use, radially sandwiched between the windings and a wedge block, and wherein aligned radial cooling passages are formed in axially spaced locations in said windings and said wedge block, said creepage block comprising:
a pair of solid half blocks in substantially parallel side-by-side relationship, said blocks held in laterally spaced relation by a plurality of discrete spacers, wherein said spacers comprise dowel pins extending alternatively from oppositely facing sides of said half blocks, and wherein each said dowel pin is received in a hole in a corresponding one of said half blocks, said hole extending completely through said corresponding half block. - View Dependent Claims (9)
-
10. In a turbine rotor having a plurality of radially extending coil slots, each slot having a plurality of windings received therein, said windings held in each said slot by at least one axially extending wedge block and at least one axially extending creepage block, with said creepage block radially sandwiched between said windings and said wedge block, and wherein said windings and said wedge block have a plurality of axially spaced radially extending coolant passages, an improved creepage block comprising a pair of solid half blocks in substantially parallel relationship, said blocks held in laterally spaced relation by a plurality of discrete spacers.
Specification