Installation and construction method of heavy-duty gas turbine

Abstract

The invention discloses an installation and construction method of a heavy-duty gas turbine. The method comprises the following steps of S1, foundation inspection; S2, installing and irrigating a compressor support and a turbine support; S3, installing the gas turbine in place; S4, accurately finding the gas turbine according to a basic axis; S5, pre-tightening and welding the turbine support; S6,temporarily installing an air drying module; S7, installing an intermediate shaft and centering a shaft system; S8, installing an exhaust diffuser; S9, installing a gas turbine gas inlet ring pipe, and connecting a gas inlet hose with a combustor; S10, installing a compressor bearing cover and a turning gear; S11, installing a sensor for measuring the rotating speed and vibration; S12, installingIGV and CV1 executing mechanisms; S13, installing accessory equipment and pipelines of the gas turbine; S14, insulation installation of the gas turbine according to a gas turbine insulation installing manual; S15, checking a combustion chamber before the gas turbine is started; and S16, finally retightening a gas turbine supporting foundation bolt. According to the installation and construction method of the heavy-duty gas turbine, the installation progress can be accelerated, and the labor investment is reduced.

Description

technical field [0001] The invention relates to an installation and construction method, in particular to an installation and construction method of a heavy-duty gas turbine. Background technique [0002] The AE94.3A produced by Shanghai Steam Turbine Factory is a heavy-duty gas turbine with a design frequency of 50Hz, a single-shaft annular combustor, and a cold-end drive. During on-site operation, the air enters the compressor through the intake system of the filter device and the intake port, and is compressed The air directly enters the annular combustion chamber, and is combusted with fuel through 24 burners to increase the temperature of the air. The high-temperature gas coming out of the combustion chamber passes through the turbine to convert heat enthalpy into mechanical energy, driving the gas generator to generate power, and the exhaust gas passes through the The axial exhaust diffusion section enters the waste heat boiler, heats the steam, and drives the steam tu...

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Problems solved by technology

[0002] The AE94.3A produced by Shanghai Steam Turbine Factory is a heavy-duty gas turbine with a design frequency of 50Hz, a single-shaft annular combustor, and a cold-end drive. During on-site operation, the air enters the compressor through the intake system of the filter device and the intake port, and is compressed The air directly enters the annular combustion chamber, and is combusted with fuel through 24 burners to increase the temperature of the air. The high-temperature gas coming out of the combustion chamber passes through the turbine to convert heat enthalpy into mechanical energy, driving the gas generator to generate power, and the exhaust gas passes through the The axial exhaust diffusion section enters the waste heat boiler, heats the steam, and drives the steam turbine to do work. The gas-steam combined cycle unit has many advantages such as high thermal efficiency, simple maintenance, convenient operation, energy saving and environmental protection, but there are many difficulties in the installation process. Sometimes it needs the guidance of the factory representative, and the operation is not flexible

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