Exhaust heat steam turbine air-supplementary regulation system and its control method

Abstract

The invention discloses a residual heat utilization steam turbine steam complementing adjusting system and a control method, which comprises an adjustable steam complementing adjusting steam valve, a pressure steam turbine, a transducer, a steam-water separator and an adjustor, a steam complementing hole is arranged on the interpolar position of a steam turbine, a steam complementing pipeline is connected on the steam complementing hole, a steam-water separator is arranged on the steam complementing pipeline, the adjustable steam complementing adjusting steam valve is arranged on the steam complementing pipeline between the steam-water separator and the steam complementing hole, executing signals of the adjustable steam complementing adjusting steam valve are connected with the adjuster output control signals, a pressure transducer is arranged on the steam complementing pipeline, the steam complementing signals of the pressure transducer is connected with the adjuster pressure output signals. Steam complementing steam firstly passes through the steam-water separator, and wet steam is conversed to be dry steam to reduce waterworn. The residual heat utilization steam turbine steam complementing adjusting system which is got by the invention effectively solves the problem which exists in the existing technique, the system achieves automatic adjustment of steam complementing when a steam complementing system which is stably operated is guaranteed. Thereby residual heat utilization is led to be the highest.

Description

technical field [0001] The invention relates to a control technology of a waste heat utilization steam turbine, in particular to a waste heat utilization steam turbine supplementary steam adjustment system and a control method thereof. Background technique [0002] Cement, steel mills, petrochemical and other industries often produce steam with different parameters in the production process, and some low-grade (low-pressure saturated steam) is often not effectively utilized. Direct emptying not only wastes energy, but also pollutes the environment. The temperature of this part of low-pressure steam Low and high flow. The existing domestic steam intake turbine structure is not fully set according to the performance of the steam intake turbine and cannot be adjusted by itself, resulting in instability and non-adjustability of the steam intake, thereby affecting the efficiency and stability of steam turbine waste heat utilization. Contents of the invention [0003] The purpo...

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Problems solved by technology

[0002] Cement, steel mills, petrochemical and other industries often produce steam with different parameters in the production process, and some low-grade (low-pressure saturated steam) is often not effectively utilized. Direct emptying not only wastes energy, but also pollutes the environment. The temperature of this part of low-pressure steam low and high flow

The structure of the existing steam-admission steam turbines in China is not fully set according to the performance of the steam-admission steam turbine and cannot be adjusted by itself, resulting in the instability and non-adjustability of the steam intake, which affects the efficiency and stability of steam turbine waste heat utilization

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