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Sealing system for reducing leakage of lubricating oil of gas turbine

A technology of sealing system and lubricating oil, which is applied in the direction of engine lubrication, turbine/propulsion device lubrication, jet propulsion device, etc. It can solve the problems of lubricating oil leakage, deterioration, coking, etc., and achieve the effect of reducing lubricating oil leakage

Pending Publication Date: 2019-07-26
中国船舶重工集团公司第七0三研究所
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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

Method used

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  • Sealing system for reducing leakage of lubricating oil of gas turbine
  • Sealing system for reducing leakage of lubricating oil of gas turbine
  • Sealing system for reducing leakage of lubricating oil of gas turbine

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specific Embodiment approach 1

[0028] Specific implementation mode one, the following combination Figure 1-3 Describe this embodiment. This embodiment provides a sealing system that reduces lubricating oil leakage. The structural schematic diagram of the sealing system applied to a gas turbine is as follows figure 1 shown; including the body of the lubricating oil sealing device, the sealing system also includes a pressurized bleed air system 20,

[0029] The air outlet end of the pressurized bleed air system 20 communicates with the sealed air cavity 5 of the lubricating oil sealing device body through the air supply pipe 11 of the sealed air cavity of the lubricating oil sealing device body, and a one-way valve 21,

[0030] Also includes air pressurization system,

[0031] The air outlet end of the air booster system communicates with the sealed air cavity 5 of the lubricating oil sealing device body through the air supply pipe 11 of the sealed air cavity of the lubricating oil sealing device body;

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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 ...

Claims

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Application Information

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IPC IPC(8): F02C7/06F02C7/28
CPCF02C7/06F02C7/28
Inventor 刘伟何彬张善科张锐岩史振
Owner 中国船舶重工集团公司第七0三研究所
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