A device and method for non-stop steam turbines in waste heat power plants in iron and steel plants

Abstract

The invention provides an apparatus for keeping non-stop operation of steam turbines in waste heat power plants of an iron and steel plant; the apparatus comprises a data acquisition device, a decision support system, a control system, a cooling and pressure-reducing device, a steam output adjusting valve block, a steam discharge valve / water drain valve, a steam synchronization adjusting valve block, an emergency steam pipeline, emergency steam and data acquisition line, which are connected with each other; a method for keeping non-stop operation of the steam turbines in the waste heat power plants of the iron and steel plant comprises the steps: the power plants are contacted with associated production branch plants by using computer networks; the waste heat power generation is equipped with the cooling and pressure-reducing device and used as the emergency standby steam source of the next level; the data acquisition module acquires data of present values and accident values; according to the overhauling or accident conditions of the production plan, the decision support system controls the steam flowing process of whole heating pipes by an acquisition module and the data of a database itself, so that the stable continuous connection of the steam is achieved and the non-stop of the steam turbines can be guaranteed. According to the apparatus and the method for keeping non-stop operation of the steam turbines in the waste heat power plants of the iron and steel plant, the consumed time of frequent shutdown of the steam turbines is avoided, so that the steam turbines have long service life and are energy-saving and environmental-friendly.

Description

Technical field: [0001] The invention relates to the technical field of steam turbines and computer industrial control, in particular to a device and method for low-load operation of steam turbines between various waste heat power plants in a steel plant and without stopping. Background technique: [0002] In the prior art, waste heat power plants in iron and steel plants are divided into three categories, one is to use surplus gas to generate electricity, the other is to use hot air from annular coolers to generate electricity, and the third is to use surplus saturated steam in steel plants to generate electricity. The three types of power plants correspond to gas-fired power plants, For sintering waste heat power plants and saturated steam power plants, the gas production unit for gas-fired power generation is the ironworks, the source of hot air for sintering waste heat power generation is the sintering plant, and the source of surplus steam for saturated steam power gener...

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Problems solved by technology

At present, there is no device and method to ensure that the steam turbines in the various waste heat power plants of the iron and steel plant will not stop when there is no waste heat.

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