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A flow path design method for a gas turbine exhaust device

A technology for exhaust devices and gas turbines, which is applied in the direction of gas turbine devices, jet propulsion devices, mechanical equipment, etc. It can solve the problems of obvious separation of gas flow, turbulent flow direction, and unstable air flow, and achieve the reduction of turning radius ratio and regular flow direction , The effect of gas flow stability

Active Publication Date: 2021-04-16
AECC SHENYANG ENGINE RES INST
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  • Description
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AI Technical Summary

Problems solved by technology

The round-to-square flow path is integrated, which has problems such as unstable air flow, obvious separation of gas flow, disordered flow direction, and large total pressure loss.

Method used

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  • A flow path design method for a gas turbine exhaust device
  • A flow path design method for a gas turbine exhaust device

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Embodiment Construction

[0013] In order to make the purpose, technical solution and advantages of the application more clear, the technical solution in the embodiment of the application will be described in more detail below in conjunction with the drawings in the embodiment of the application.

[0014] In the description of this application, the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", " The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device or Elements must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the scope of the application.

[0015] The purpose of this application is to provide...

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Abstract

The present application discloses a flow path design method for a gas turbine exhaust device, which is used to reduce the flow path pressure loss between a vertical circular or ring-shaped air inlet and a rectangular air outlet, which specifically includes: The air port is divided into 2 n A fan-shaped or fan-ring air inlet unit, and the air outlet is divided into the same number of air outlet units as the number of the air inlet unit, and the air inlet unit and the air outlet unit are connected to form 2 n Each flow path unit includes a transition section, a diffuser section and a convergence section. In this application, the flow path is designed into a split structure, and the 2 n The two flow paths are twisted together to realize the diversion of imported gas. The flow path design method of this application can greatly reduce the gas equivalent turning radius ratio, and the gas flow is stable, the flow direction is regular, and the total pressure loss is small.

Description

technical field [0001] The application belongs to the technical field of gas turbine design, and in particular relates to a flow path of a gas turbine exhaust device. Background technique [0002] In terms of the structure of the output shaft, the gas turbine exhaust device is divided into two types: the front shaft output type and the rear shaft output type. The structure of the front axle output type exhaust device is relatively simple, and the gas is deflected and discharged in a regular flow path; the rear axle output type has a more complicated internal flow path profile and structure because the output shaft must pass through the exhaust device. Restricted by the structure of the turbine rear casing, some rear output exhaust devices need to be designed with a circular inlet and a rectangular outlet, and the gas flow path needs to be transformed from a circle to a square. The round-to-square flow path is integrated, which has problems such as unstable air flow, obvious...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C7/00F01D25/30
CPCF01D25/30F02C7/00
Inventor 贾东兵许羚巩亚南张瑞霞
Owner AECC SHENYANG ENGINE RES INST
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