End connection structure for a hollow conductor assembly

Details End connection structure for a hollow conductor assembly End connection structure for a hollow conductor assembly

1977-05-10

1981-03-31

Callaghan, Thomas F.

Pipe joints or couplings

Pipe to discreet nipple or sleeve to plate

Pipe to nipple connection dependent on nipple to plate...

174 15C, 285173, 285177, 285287, 285381, 310 65, F16L 1308

Patent

active

042589398

ABSTRACT:
A coupling structure for a hollow conductor assembly in which the hollow conductors form at least a part of the winding of an electrical machine to be cooled by passing a fluid coolant through the conductors. A nipple made from a hard material such as a nickel-chrome steel and which serves as an electrical as well as a fluid coolant connection to the hollow conductors is shrunk onto a sleeve made of a relatively softer material such as copper in which the end portions of the hollow conductor assembly are embedded and soldered to form a gas-tight connection. The inner wall of a cylindrical section of the nipple is provided with a series of circumferentially extending ribs and these ribs press into the surface of the softer sleeve during the nipple-shrinking operation. The nipple is also provided with a second section of smaller diameter than the sleeve-receiving section for connection to a fluid coolant carrying pipe.

REFERENCES:
patent: 1004270 (1911-09-01), Jahnke
patent: 3185872 (1965-05-01), Weissheimer et al.
patent: 3439738 (1969-04-01), Dixon et al.
patent: 3805567 (1974-04-01), Agius-Sinerco
patent: 3955110 (1976-05-01), Karlen
patent: 4113287 (1978-09-01), Bogatirev et al.
patent: 4133559 (1979-01-01), Davies

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