Grooved visco seal for stationary discharge chamber of water-coo

Details Grooved visco seal for stationary discharge chamber of water-coo Grooved visco seal for stationary discharge chamber of water-coo

1976-09-03

1978-09-12

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 61, 277 3, 277 59, H02K 900

Patent

active

041140591

ABSTRACT:
A discharge chamber seal arrangement for a water cooled turbine generator rotor. The discharge chamber seal arrangement comprises a gland seal operable during high speed operation of the rotor and a contact seal operable during low rotor speed and at standstill. Helical grooves located on the inside diameter of the gland seal develops an axial pressure gradient in the fluid annulus surrounding the shaft to reduce the leakage flow at speed through the gland seal. The helical grooves apply a pumping action which opposes the leakage flow.

REFERENCES:
patent: 3733501 (1973-05-01), Heller
patent: 3831046 (1974-08-01), Curtis
patent: 3963247 (1976-06-01), Nommensen
patent: 3968388 (1976-07-01), Lambrecht
patent: 4010960 (1977-03-01), Martin
patent: 4018059 (1977-04-01), Hatch

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