Sealing system for reducing leakage of lubricating oil of gas turbine

Abstract

The invention relates to the technical field of gas turbines, in particular to a sealing system for reducing leakage of lubricating oil of a gas turbine. The sealing system aims to solve the problemsthat when the existing gas turbine is in a low working condition, the oil is leaked, the oil consumption is large, the temperature of a lubricating oil is too high, a main bearing cannot be protected,and a lubricating system cannot work normally. The sealing system comprises a lubricating oil sealing device body and a pressurizing air guiding system, an air outlet end of the pressurizing air guiding system is in communication with a sealing air cavity of the lubricating oil sealing device body through a sealing air cavity air supply pipe of the lubricating oil sealing device body, a one-way valve is arranged on the passage between the pressurizing air guiding system and the sealing air cavity, and the air outlet end of the air pressurizing system is in communication with the sealing air cavity through the sealing air cavity air supply pipe of the lubricating oil sealing device body. The sealing system is used for preventing the lubricating oil from leaking under the action of a low working condition of the gas turbine.

Description

technical field [0001] The invention relates to the technical field of gas turbines, in particular to anti-skid oil leakage technology. Background technique [0002] Since the 1970s, gas turbines have been widely used in industrial peak-shaving power generation, compressed natural gas transmission pipelines, offshore platforms and combustion-steam Combined cycle power plants and other fields have been widely used. [0003] Regardless of whether the gas turbine is used as a mechanical drive or for power generation, it is composed of a compressor, a combustion chamber, a turbine, and ancillary systems. It can be regarded as air that is continuously compressed in the compressor, flows into the combustion chamber and is heated continuously. Generate gas with a certain pressure and temperature, then flow into the turbine to expand and do work, and convert part of the heat energy into mechanical energy. High-speed power rotating machinery; any single rotor rotating at high speed ...

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Problems solved by technology

[0013] The present invention aims to solve the problem that the existing gas turbine cannot guarantee the stability of the pressure value in the sealed air chamber and the main bearing chamber under the low working conditions, which causes lubricating oil leakage, resulting in large oil consumption and excessive temperature of lubricating oil in severe cases. High, deterioration and coking; and the problem that the main bearing cannot be protected and the lubrication system cannot work properly

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