A design method for a marine gas turbine compressor with grooved ring type processing casing

A technology for processing casings and gas turbines, applied in design optimization/simulation, geometric CAD, etc., to reduce resource and time consumption, improve stability, and simplify the workload of designers

Active Publication Date: 2021-11-02
中国船舶重工集团公司第七0三研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method for designing a marine gas turbine compressor with a grooved annular processing casing that solves the design problem of a marine gas turbine compressor with a grooved annular processing casing

Method used

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  • A design method for a marine gas turbine compressor with grooved ring type processing casing
  • A design method for a marine gas turbine compressor with grooved ring type processing casing
  • A design method for a marine gas turbine compressor with grooved ring type processing casing

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Embodiment Construction

[0030] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0031] combine Figure 1-3 , a kind of marine gas turbine compressor band slot annular processing case design method of the present invention is realized through the following steps:

[0032] Step 1: Select the typical working conditions for the design of the grooved ring-type handling casing. 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;

[0033] 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. Since the principle of expanding the stabi...

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Abstract

The purpose of the present invention is to provide a design method for a marine gas turbine compressor with a grooved ring type treatment casing, select a typical working condition, and obtain a grooved ring treatment casing by analyzing the distribution of aerodynamic parameters of the flow field near the breathing point under typical working conditions extract the inlet absolute airflow angle and the inlet relative airflow angle at the axial characteristic position near the panting point under typical working conditions to determine the slotting angle of the grooved ring; determine the grooved ring Deal with the lengths of casing chamber 1 and chamber 2; select the three influencing factors of grooved ring groove radius, groove length and groove number to design the structural scheme; carry out numerical calculations for different structural design schemes, and determine Optimal scheme; perform performance analysis on the optimal scheme under design conditions. 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): G06F30/15G06F30/23
Inventor 张舟王琦金鹏洪青松王廷万新超张亮
Owner 中国船舶重工集团公司第七0三研究所
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