Passive cooling system for control valve actuators within a negative pressure turbine enclosure using ambient cooling air

摘要

The present application provides a passive control valve actuator cooling system to provide a flow of cooling air to a control valve actuator used with a gas turbine engine. The passive control valve actuator cooling system may include a turbine enclosure with a negative pressure therein, a radiation shield with a number of radiation shield outlets and the control valve actuator positioned therein, and a cooling air line extending from outside of the turbine enclosure to the radiation shield such that the negative pressure within the turbine enclosure pulls the flow of cooling air into and through the radiation shield so as to cool the control valve actuator.

主权项

1. A passive control valve actuator cooling system to provide a flow of ambient cooling air to a control valve actuator used with a gas turbine engine, comprising:
a turbine enclosure; the turbine enclosure comprising a negative pressure therein; a radiation shield with the control valve actuator positioned therein, wherein the radiation shield is disposed within the turbine enclosure and forms a boundary about the control valve actuator; the radiation shield comprising a plurality of radiation shield outlets; and a cooling air line extending from outside of the turbine enclosure to the radiation shield such that the negative pressure within the turbine enclosure pulls the flow of ambient cooling air into and through the radiation shield and around the control valve actuator so as to cool the control valve actuator.