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Design method of self-circulating treatment casing of marine gas turbine compressor

A casing processing and self-circulating technology, which is applied in computer-aided design, design optimization/simulation, electrical digital data processing, etc., to achieve the effects of reducing resource and time consumption, excellent expansion and stability effects, and simplifying the workload of designers

Active Publication Date: 2021-12-17
NO 703 RES INST OF CHINA SHIPBUILDING IND CORP
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  • Abstract
  • Description
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Problems solved by technology

[0004] The object of the present invention is to provide a design method for a self-circulating treatment casing of a ship gas turbine compressor that solves the design problem of a self-circulation treatment casing of a ship gas turbine compressor

Method used

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  • Design method of self-circulating treatment casing of marine gas turbine compressor
  • Design method of self-circulating treatment casing of marine gas turbine compressor
  • Design method of self-circulating treatment casing of marine gas turbine compressor

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Embodiment Construction

[0032] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0033] combine Figure 1-3 , a kind of marine gas turbine compressor self-circulation processing case design method of the present invention is realized through the following steps:

[0034] Step 1: Select the typical working conditions of the self-circulating processing casing design. According to the aerodynamic design results of the compressor, the working condition with the smallest surge margin in each working condition is selected as the typical working condition, and the general typical working condition is selected near the low speed working condition of the compressor;

[0035] Step 2: Analyze the distribution of aerodynamic parameters of the flow field near the puff point under typical working conditions, including the relative total pressure and relative Mach number distribution on the meridian plane. The self-circulating processing casing combines ai...

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Abstract

The object of the present invention is to provide a kind of design method of self-circulating processing casing of ship gas turbine compressor, select typical working conditions according to the aerodynamic design result of compressor, obtain the axial characteristic position of self-circulating processing casing; The inlet absolute airflow angle and the inlet relative airflow angle at the tip of the rotor blade on the axial characteristic position near the breathing point are used to determine the intake angle and exhaust angle of the bleed flow channel of the self-circulation treatment casing; determine the self-circulation treatment The shape line of the casing bleed flow channel; select the three influencing factors of the axial length of the bleed flow path, the width of the intake flow path and the width of the exhaust flow path to design the structural scheme; again carry out numerical calculations on different structural design schemes to determine the optimal Excellent solution. The invention is not limited to the axial flow compressor of the ship gas turbine, and is also applicable to the design process of the treatment casing of various industrial gas turbine axial flow compressors and aeroengine axial flow compressors with processing casings.

Description

technical field [0001] The invention relates to a gas turbine design method, in particular to a compressor design method. Background technique [0002] As one of the three most important core components of a marine gas turbine, the compressor's technical performance and reliability directly affect the realization of the safety and economic indicators of a marine gas turbine. The marine gas turbine shall, while ensuring the performance of the design point, pay special attention to the margin and efficient operation under low working conditions. The operating characteristics under such a wide range of variable working conditions make the stability of gas turbines in low working conditions very prominent when they are used as propulsion or power generation in ship power systems, and often become the limiting bottleneck of unit performance, which has great impact on ship gas turbine compressors The performance and stability under non-design conditions put forward higher require...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/28G06F30/17G06F113/08G06F119/08G06F119/14
Inventor 王琦张舟潘宏伟王旭洪青松金鹏王廷万新超张亮
Owner NO 703 RES INST OF CHINA SHIPBUILDING IND CORP
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