由西安重型机械研究所第二研究室设计、试制工厂制造的大型水蒸汽喷射真空泵,于1985年12月在大冶钢厂第四炼钢分厂试车成功。该泵为该厂 HT—60吨钢包精炼炉的重要配套设备。该泵的主要特点是:首次采用了真空止回阀和冷凝器喷水头,使双列三级泵(辅助泵和工作泵的后三级)共用一组冷凝器,与以前的同 Large-scale steam jet vacuum pump, which was designed and manufactured by the second laboratory of Xi’an Heavy Machinery Research Institute, was successfully tested at the No.4 Steelmaking Plant of Daye Steel Plant in December 1985. The pump for the plant HT-60 tons ladle refining furnace ancillary equipment. The main features of the pump are: For the first time, the vacuum check valve and the condenser spray head are used to make the double-row three-stage pump (the latter three stages of the auxiliary pump and the working pump) share the same set of condensers,