Gas turbine auxiliary oil seal method and device

A gas turbine and auxiliary oil technology, which is applied in the direction of gas turbine devices, jet propulsion devices, mechanical equipment, etc., can solve the problems of high cost, heavy maintenance workload, complex structure, etc., reduce maintenance requirements, prolong parking time, and avoid internal corrosion Effect

Active Publication Date: 2017-03-08
AECC SHENYANG ENGINE RES INST
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Problems solved by technology

The technical structure is complicated, the cost is high and the maintenance workload is heavy

Method used

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  • Gas turbine auxiliary oil seal method and device

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Embodiment Construction

[0022] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...

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Abstract

The invention discloses an auxiliary oil-sealing method and device for a combustion gas turbine, and belongs to the field of combustion gas turbine designing. The oil-sealing method comprises the steps as follows: a first stop valve is arranged on an oil supplying pipe; a high-level oil tank is arranged, one end of the high-level oil tank is connected onto the oil supplying pipe through an oil charging pipe, the joint of the high-level oil tank and the oil supplying pipe is located between the first stop valve and the combustion gas turbine, and the other end of the high-level oil tank is connected with a fuel tank through an oil returning pipe; and a second stop valve is arranged on the oil charging pipe. According to the auxiliary oil-sealing method and device for the combustion gas turbine, the high-level oil tank is arranged at the highest point of the whole device; when the combustion gas turbine is started, both the first and the second stop valves are opened, and fuel oil enters the high-level oil tank and the combustion gas turbine through the oil charging pipe; after the high-level oil tank is filled with the fuel oil, the extra fuel oil is discharged back to the fuel tank through the oil returning pipe; when the combustion gas turbine is stopped, the first stop valve is closed, the second stop valve is opened, the fuel oil in the high-level oil tank flows into the combustion gas turbine for oil-sealing by means of the liquid level difference through the oil charging pipe, and thus the parking time of the combustion gas turbine is remarkably prolonged.

Description

technical field [0001] The invention belongs to the field of gas turbine design, and in particular relates to an oil sealing method for the fuel system of the gas turbine. Background technique [0002] Gas turbine is a widely used power device, which can use various fuels such as gaseous fuel (such as natural gas) or liquid fuel (such as diesel oil, etc.). Gas turbines that use oil as fuel need to be equipped with a fuel system to adjust the fuel flow of the gas turbine. The fuel system is usually composed of oil filter, fuel pump, regulator, distributor and other components. The system is precise and complex and requires high maintenance. When the gas turbine is shut down, in order to ensure that the fuel system does not rust, the gas turbine can usually only be parked for a short period of time (the specific time is related to the working environment where the gas turbine is located). If it needs to be parked for a long time, it is necessary to start the gas turbine regu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C7/28
Inventor 左伟杨柳荣芹芳王兆铭李军
Owner AECC SHENYANG ENGINE RES INST
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