Lubricating oil system of gas turbine

Abstract

The invention discloses a lubricating oil system of a gas turbine. The lubricating oil system of the gas turbine is characterized in that a main pump and an auxiliary pump are used for providing lubricating oil for a main oil supply pipeline, oil discharged from an oil distribution valve block respectively enters a to-be-lubricated part of the gas turbine according to flow requirements to cool andlubricate the to-be-lubricated part, and another branch of oil is led to a main pump pre-lubrication pipeline, and enters a pump cavity of the main pump through a main pump pre-lubrication one-way valve and a main pump pre-lubrication flow limiter on the main pump pre-lubrication pipeline to pre-lubricate the main pump. According to the lubricating oil system of the gas turbine, before the gas turbine is started, the main pump does not work, the main pump can be pre-lubricated, the service life of the main pump is effectively prolonged, the main pump pre-lubrication flow limiter on the main pump pre-lubrication pipeline can effectively control the pre-lubrication flow of the main pump, and the main pump pre-lubrication one-way valve can prevent the pumping-out flow from leaking when the main pump operates.

Description

technical field [0001] The invention relates to a gas turbine, in particular to a gas turbine lubricating oil system. Background technique [0002] A gas turbine is a rotary power machine that uses continuously flowing gas as a working medium to convert heat energy into mechanical work. In the main process of air and gas, only the gas turbine cycle composed of three major components: the compressor (Compressor), the combustor (Combustor) and the gas turbine (Turbine), is generally called a simple cycle. Most gas turbines use a simple cycle scheme. Because its structure is the simplest, and it can best reflect a series of advantages of gas turbines, such as small size, light weight, quick start, and less or no cooling water. [0003] The working process of the gas turbine is that the compressor (that is, the compressor) continuously inhales air from the atmosphere, and compresses it step by step through the axial flow compressor to increase the pressure, and at the same tim...

AI Technical Summary

Problems solved by technology

[0005] The existing gas turbine lubricating oil system is mostly designed independently of the gas turbine soundproof box, and is located outside the soundproof box, which leads to poor integrity of the gas turbine and is not conducive to the transportation of the unit, especially for the mobile unit used as an emergency power supply. It is even more inconvenient

During the operation of the unit, the lubricating oil in the oil tank is heated and evaporated to produce oil mist, which is also mixed with carbonized fine particles; the generation of oil mist creates a slight positive pressure in the oil tank, which hinders the oil return of the system; the existing gas turbine lubricating oil system is Most of the oil mist is treated by direct discharge or discharge after simple filtration, which seriously pollutes the environment, increases oil consumption, greatly increases the concentration of PM2.5 particles inside the plant, and hinders the health of operators

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