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Installation and construction method of heavy-duty gas turbine

A technology for gas turbines and construction methods, which is applied in the direction of gas turbine devices, jet propulsion devices, mechanical equipment, etc., and can solve problems such as rising air temperature and inflexible operations

Active Publication Date: 2020-06-02
POWER CHINA HENAN ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Installation and construction method of heavy-duty gas turbine

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Embodiment

[0078] Embodiment: a heavy-duty gas turbine installation and construction method, comprising the following steps:

[0079] S1: Basic inspection

[0080] 1): The surface of the foundation concrete should be flat and free from defects such as cracks, holes, honeycombs, pitted surfaces and exposed bars.

[0081] 2): The longitudinal axis of the generator-gas turbine foundation and the transverse axis of gas turbine compressor support, turbine support, and center guide support should be vertical and consistent with the design, and permanent marks should be made on the foundation. Make a permanent mark at the position +1.0m of the frame. The longitudinal and transverse centerline marks of the compressor support need to be marked on the front, rear and left and right sides. An iron plate with a thickness of δ=10mm is fixed on the foundation surface with expansion bolts, and a [10 channel steel frame is used. Pull the steel wire tool, after pulling the steel wire, hang a pendant, st...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/20
CPCF02C7/20
Inventor 崔征李得生杜荷桃银志浩冯浩尹红伟单洪亮唐燕海
Owner POWER CHINA HENAN ENG CO LTD
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