Shaft Holding System for Cryogenic Pumps or Expanders
AssigneeEbara International Corporation
InventorKeijun Kamio
Life of this patent
Estimating the term…
Abstract
A shaft holding system for cryogenic pumps or expanders comprising of a set of hydraulic brakes surrounding the shaft of turbomachinery. Fluid or gas is introduced into the bellows chamber of a brake assembly. The bellows chamber expands due to the increase in pressure, thus exerting a force on the piston of the brake assembly. The piston in turn exerts a force on a brake rod, which pushes a brake pad attached to the end of the brake rod against the shaft. A feed line supplies fluid or gas to the hydraulics of the brake assembly. Two or more brakes can be used to secure the shaft of the turbomachine. A turbomachine including more than one shaft can use a set of brakes for each shaft of the turbomachine.
Claims18
A system for holding a shaft of a machine contained within a vessel during standstill conditions, comprising:
- two or more brakes arranged around the shaft;
- a supply line feeding the two or more brakes with a pressurized fluid or gas, the pressurized fluid or gas increasing a pressure within the two or more brakes and causing the two or more brakes to exert approximately equal forces on the shaft during standstill conditions.
A system for holding a first shaft and a second shaft of a machine contained within a vessel during standstill conditions, comprising:
- a first set of brakes arranged around the first shaft;
- a second set of brakes arranged around the second shaft;
- a first supply line feeding the first set of brakes with a pressurized fluid or gas, the pressurized fluid or gas increasing a pressure within the first set of brakes and causing the first set of brakes to exert a first force on the first shaft during standstill conditions;
- and
- a second supply line feeding the second set of brakes with the pressurized fluid or gas, the pressurized fluid or gas increasing a pressure within the second set of brakes and causing the second set of brakes to exert a second force on the second shaft during standstill conditions.
Dependencies are inferred from the claim text.