Study on Automatic Surging Prevention of Blower

Abstract

The author published earlier the study on surge-prevention of blowers with the method of "Surge-Preventing Valve Operation". In this report there are shown various types of operation to prevent surge by operating the surge-preventing valve with oil hydraulic controller which is of Askania type and are given the data which are necessary for designing of preventing equipments. There are also shown experiments on stability and adultation where an automatic surgepreventing unit is installed on the blower made for testing. The author tests how it influences upon hunting and adultation of the control unit to damp the flow in the lead pipes to the controller and to the meter. In the case of the damped flow to the controller the stability of the unit increases while adultation decreases. Throttling of the valve in order to eliminate hunting influences little upon adultation.