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A gas turbine compressor off-line washing control method and system

A gas turbine and control system technology, applied in the direction of gas turbine devices, machines/engines, liquid fuel engines, etc., can solve the problems of difficult to cover blades, incomplete cleaning, etc., and achieve the effect of convenient operation, simple operation and good economy

Active Publication Date: 2017-08-04
BEIJING HUAQING GAS TURBINE & INTEGRATED GASIFICATION COMBINED CYCLE ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, it is difficult to cover the entire blade, resulting in incomplete cleaning.

Method used

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  • A gas turbine compressor off-line washing control method and system
  • A gas turbine compressor off-line washing control method and system
  • A gas turbine compressor off-line washing control method and system

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Experimental program
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Embodiment Construction

[0061] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0062] The embodiment of the present invention proposes a gas turbine compressor off-line washing control method, such as figure 1 As shown, the described method includes:

[0063] S1. Detect the water temperature and liquid level of the water tank device, the temperature between the turbine wheels of the gas turbine disc and the temperature of the compressor inlet.

[0064] Specifically, the detection of the inter-wheel temperature of the gas turbine disc specifically includes:

[0065] Detect the temperature of the front and rear chambers of the second-stage, third-stage and fourth-stage discs of the gas turbine respectively;

[0066] The highest temperature is selected from the detected temperatures as the interwheel temperature of the gas turbine disk.

[0067] S2. Judging whether the water temperature and liquid level of the water tank device and t...

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PUM

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Abstract

The invention relates to a gas turbine compressor off-line water washing control method and system, the method comprising: detecting the water temperature and liquid level, the temperature between the turbine wheels and the temperature at the inlet of the compressor; judging whether the detected quantities respectively reach the corresponding preset water washing Threshold; if satisfied, then start the gas turbine with no load until the speed of the gas turbine reaches the washing speed, and the guide vane angle of the compressor inlet reaches full opening; if not satisfied, then readjust and detect; control the speed of the gas turbine to remain unchanged, Rinse with clean water; control the speed of the gas turbine to remain unchanged for the first washing and cleaning, disconnect the start signal of the gas turbine, and perform the second washing and cleaning; start the gas turbine again without load until the speed of the gas turbine reaches the preset washing speed ; The rotating speed of the gas turbine is controlled to remain constant for rinsing. The invention realizes the automatic control of the whole off-line water washing process, and performs comprehensive cleaning by setting the cleaning process with reduced rotating speed.

Description

technical field [0001] The invention relates to the technical field of water washing of gas turbines, in particular to a control method and system for off-line water washing of gas turbine compressors. Background technique [0002] Currently, due to the worldwide energy shortage, the demand for heavy-duty gas turbines is increasing. High-efficiency, low-emission, and low-combustion exhaust gas reuse has become the current development trend of gas turbines. However, for gas turbines, the accumulation of fouling in the compressor has become a very prominent problem. It will affect the efficiency, pressure ratio, and flow rate of the compressor, and directly cause the reduction of the power and efficiency of the gas turbine, and the direct consequence will be the loss of the power generation of the gas turbine. Therefore, the fouling accumulation of the compressor is an urgent problem to be solved in the operation of the gas turbine. [0003] Compressor water washing usually...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/70F02C9/00
CPCF04D29/705
Inventor 马秋颖
Owner BEIJING HUAQING GAS TURBINE & INTEGRATED GASIFICATION COMBINED CYCLE ENG TECH