Method and device for washing compressor flow passage of gas-steam combined generating set

Abstract

The invention relates to a method and a device for washing a compressor flow passage of a gas-steam combined generating set. The method is characterized in that 1, according to an operating manner and an operating state of the gas-steam combined generating set, a data acquisition unit automatically leads out start-stop times, operating time and compressor efficiency from an SIS (Supervisory Information System of whole plant) system and summarizes the start-stop times, the operating time and the compressor efficiency into a basic data table; 2, the SIS system is connected with a field unit DCS (Distributed Control System) to acquire field data; 3, the basic data table is applied to complete a decline curve of working efficiency of a compressor by an optimization computation unit and by comparing historical data of washing the compressor and according to the historical data of washing the compressor, the optimal washing water pressure, washing water temperature and washing water flow of the compressor flow passage are formulated; and 4, by comparing the historical data of washing the compressor and according to the historical data of washing the compressor, washing operating detailed rules of the compressor flow passage are made, so that the method for washing the compressor flow passage of the gas-steam combined generating set is determined. The method and the device have the characteristic of simple hardware structure; the condition of an unstable data source can be avoided; data accuracy is ensured; and a good washing effect is ensured.

Description

technical field [0001] The invention relates to a water washing method for the flow part of a compressor, in particular to a method and a device for washing a flow part of a compressor of a gas-steam combined generator set, and belongs to the technical field of power generation industry and auxiliary equipment. Background technique [0002] At present, the 9F gas-steam combined generator set is a large-scale gas-fired generator set with new technology in my country. my country has no mature experience in the water washing cycle of the compressor flow part. Many power plants refer to the manufacturer's instructions for the compressor flow part. wash. There are two methods of washing the flow part of the compressor: off-line washing and on-line washing. On-line washing is generally not used because the effect is not obvious. When performing offline water washing, the ambient temperature is required to be higher than 8°C, and the inter-wheel temperature of gas turbine #2 is low...

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to solve the problems of unreasonable water washing cycle, unclear process requirements for water washing and poor washing effect in the existing water washing method for the flow part of the compressor, and to provide a gas-steam combined generator set compressor ventilation Flow part washing method

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