Saturated steam generator set control system and control method

Abstract

The invention relates to the technical field of vanadium-titanium steelmaking converter technology, in particular to a control system and a control method of a saturated steam generator set. The system includes the steelmaking converter steam drum, the generator set regenerator and the steam turbine set connected in sequence through the steam pipeline. A first on-off valve is provided, and the steam pipeline between the heat accumulator of the generating set and the steam turbine set is provided with a flow meter and a first regulating valve, and the first on-off valve, the flow meter and the first regulating valve are respectively electrically connected to the PLC controller, When the steam pressure of the converter steam drum exceeds the safety range, the release valve automatically releases the steam. When the steam pressure of the steel converter drum is greater than or equal to the first pressure value, the PLC controller controls the opening of the first on-off valve and the first regulating valve. The control system not only ensures the safety of the steelmaking converter steam drum, but also realizes the automatic control of sending saturated steam to the steam turbine unit for power generation.

Description

technical field [0001] The invention relates to the technical field of vanadium-titanium steelmaking converter technology, in particular to a control system and a control method of a saturated steam generator set. Background technique [0002] In the vanadium-titanium steelmaking converter process, it is hoped that all the saturated steam generated can be sent to the saturated steam generator set for power generation. The saturated steam is first sent to the heat accumulator of the generator set through the steam pipeline for heat storage, and then the steam is stored from the generator set The device is sent to the saturated steam generator set, that is, the steam turbine unit, to convert the heat energy into electrical energy. [0003] In the vanadium-titanium steelmaking plant, the saturated steam generated by the steelmaking converter is sent to the heat accumulator of the saturated steam generator unit through the steam pipeline for energy storage. Since the length of t...

AI Technical Summary

Problems solved by technology

[0003] In the vanadium-titanium steelmaking plant, the saturated steam generated by the steelmaking converter is sent to the heat accumulator of the saturated steam generator unit through the steam pipeline for energy storage. Since the length of the steam pipeline is about 250m, when the heat storage pressure reaches 0.5MPa, the converter steam The drum pressure reaches 1.1MPa. Therefore, the steam pressure difference between the steelmaking converter steam drum and the inlet of the steam turbine unit is very large, up to 0.6MPa. As a result, the steam pressure of the steam turbine drum often exceeds the safe allowable range (less than 1.1MPa), so there is Security risks

At the same time, because the inlet pressure of the steam turbine unit has not yet reached the rated pressure, the steam turbine unit is not operating at full load, which causes the steam to be released in other ways and cannot be sent to the saturated steam turbine unit for power generation, resulting in waste of steam from the steelmaking converter

Images