Steam turbines; a practical and theoretical treatise for engineers and students, including a discussion of the gas turbine . GOVERNING STEAM TURBINES 303 central chamber contains, in normal operation, steam at theadmission or initial pressure. The valves in the other casings are operated by the forceproduced in this annular chamber by the injector or ejector actionof the cone-shaped jet. Steam to be admitted to the annularpassage must pass around the cone-shaped piston, and theposition of this piston with respect to the annular passage deter-mines the effective pressure of the steam operating
Steam turbines; a practical and theoretical treatise for engineers and students, including a discussion of the gas turbine . GOVERNING STEAM TURBINES 303 central chamber contains, in normal operation, steam at theadmission or initial pressure. The valves in the other casings are operated by the forceproduced in this annular chamber by the injector or ejector actionof the cone-shaped jet. Steam to be admitted to the annularpassage must pass around the cone-shaped piston, and theposition of this piston with respect to the annular passage deter-mines the effective pressure of the steam operating the admissionvalves. When the cone-shaped piston is in its lowest positionthe steam in passing around it to enter the turbine nozzles opposite,produces an ejector effect in the annular passage; but when thecone-shaped piston is at the other end of its stroke the steamproduces an injector effect in the annular passage. When theinjector effect predominates the pressure in the annular passageis greater than that in the steam chest, while with the ejectoreffect predominating this pressure is considerably less.
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyorkwiley, books
