Compressor throttling valve assembly
AssigneeIngersoll-Rand Company
InventorsThomas E. Gerber, Mark R. Sabin
Life of this patent
Estimating the term…
Abstract
A throttling valve assembly has an outer housing that is sealed. An actuator is connected to a pressure balanced shaft that extends into the housing to operate a plurality of linkages that can rotate blades in tandem. With the surrounding housing sealed, the shaft penetrations of the blade support shafts no longer need seals or a purge system to supply process gas during times of reduced pressure in situations with the blades nearly closed. A pressure equalization system has balance passages internal to the housing to allow flow from higher pressure zones to lower pressure zone of the process gas so as to avoid creation of a condition that can draw air into any zones of reduced pressure in the housing.
Claims20
A system, comprising:
- a flow control device, comprising:
- a plurality of flow control members;
- a plurality of linkages coupled to the plurality of flow control members;
- a common linkage coupled to the plurality of linkages;
- a first shaft coupled to the common linkage;
- and
- a second shaft coupled to the common linkage;
- wherein the flow control device comprises a housing having a chamber, wherein the plurality of linkages and the common linkage are disposed in the housing.
A system, comprising:
- an actuator;
- a plurality of linkages coupled to the actuator;
- at least one shaft coupled to the plurality of linkages;
- and
- a housing having a chamber, wherein the plurality of linkages are disposed in the chamber, and the at least one shaft is configured to move in and out of the chamber while maintaining a constant fluid volume within the chamber.
A system, comprising:
- an actuator;
- a plurality of linkages coupled to the actuator;
- at least one shaft coupled to the plurality of linkages;
- a housing having a chamber, wherein the plurality of linkages are disposed in the chamber;
- and
- a fluid leak path through the housing from an external fluid region into the chamber, wherein the fluid leak path is configured to enable pressure exchange between the external fluid region and the chamber.
Dependencies are inferred from the claim text.