AIR COOLED AIR COOLER FOR GAS TURBINE ENGINE AIR SYSTEM

摘要

An air-to-air cooler has a heat exchanger integrated to a housing. A first passage extends through the housing for directing a flow of cooling air through the heat exchanger. A second passage extends through the housing for directing a flow of hot air to be cooled through the heat exchanger. The first passage has a cooling air outlet tube disposed downstream of the heat exchanger. The cooling air outlet tube extends across the second passage between the heat exchanger and a hot air inlet of the second passage. The hot air inlet is disposed to cause incoming hot air to flow over the cooling air outlet tube upstream of the heat exchanger. An ejector drives the flow of cooling air through the first passage of the air-to-air cooler. A portion of the hot air flow may be used to drive the ejector.

主权项

1. A method of installing an ejector in a pipe having an axis, the pipe having an annular inner shoulder projecting radially inwardly from an inner surface of a wall of the pipe, and a circumferential array of holes extending through the wall of the pipe at an axial location comprised between the inner shoulder and a terminal end of the pipe, the ejector having an axially projecting annular front lip, the method comprising: positioning a shim between the inner shoulder and the front lip, the shim having a thickness corresponding to a desired axial gap between the inner shoulder and the front lip, positioning the ejector in the pipe with the shim axially abutting against the inner shoulder and the front lip, securing the ejector in position inside the pipe, and then removing the shim from the pipe.