POWER SAVING VACUUM MACHINE FOR IMPROVING VACUUM ABILITY OF CONDENSER OF THERMAL POWER GENERATOR

摘要

A power saving vacuum machine serves for improving vacuum ability of a condenser of a thermal power generator. The vacuum machine being installed after the condenser and includes a least one valve installed on the vacuum primary tube for sealing a vacuum primary tube to prevent air from entering into the condenser; a front stage pump has an inlet connected to an air inlet tube; at least one root vacuum pump including a main root vacuum pump; the main root vacuum pump including an inlet and a vent opening; the inlet of the main root vacuum pump being connected to a rear end of the vacuum primary tube. The at least one root vacuum pump may be only one pump which is the main root vacuum pump, or the at least one root vacuum pump is a plurality of root vacuum pumps which are connected serially.