Powder coating for generator stator bar end fitting and method for applying the powder coating
First Claim
1. An assembly comprising a stator bar end and a fitting receiving the end to define a seal substantially impermeable to liquid, the fitting having a chamber for receiving a liquid through an opening in the fitting and in communication with hollow strands forming at least a portion of said stator bar and for flow of the liquid through the hollow strands, wherein at least a portion of an interior surface of said chamber has a polymer layer powder coated and cured on a surface thereof.
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Abstract
A method of sealing a generator stator bar and a stator bar end fitting receiving the end including the steps of: brazing the fitting to the end of the stator bar with a braze material; applying a powder coating material to the end of the stator bar in the fitting; and curing the powder coating material to form a barrier coating on the end of the stator bar and the adjoining interior surfaces of the fitting.
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Citations
10 Claims
- 1. An assembly comprising a stator bar end and a fitting receiving the end to define a seal substantially impermeable to liquid, the fitting having a chamber for receiving a liquid through an opening in the fitting and in communication with hollow strands forming at least a portion of said stator bar and for flow of the liquid through the hollow strands, wherein at least a portion of an interior surface of said chamber has a polymer layer powder coated and cured on a surface thereof.
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5. An assembly as in claim 14, wherein the polymer layer has a thickness of about 0.018 to about 0.020 inches.
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6. A fitting for a stator bar of a generator comprising:
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a fitting housing having a collar at a first end and a cooling fluid coupling at an opposite end, wherein said collar is configured to be brazed to an end of the stator bar;
a chamber extending from the first end to the opposite end of the fitting; and
a polymer coating on an end of the stator bar in said chamber and forming a seal between the end and a remaining portion of the chamber. - View Dependent Claims (7, 8, 9, 10)
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Specification