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Supercritical carbon dioxide axial flow compressor and axial flow counter-rotating turbine double-shaft structure

A technology for axial flow compressors and carbon dioxide, applied in axial flow pumps, mechanical equipment, machines/engines, etc., can solve the problems of multiple auxiliary systems, high temperature parameters, and large volume, and achieve small structural volume, lighten structural quality, The effect of improving aerodynamic efficiency

Active Publication Date: 2017-09-05
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The traditional Brayton cycle power output structure using air as the working medium often has the disadvantages of large volume, high temperature parameters and many auxiliary systems.

Method used

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  • Supercritical carbon dioxide axial flow compressor and axial flow counter-rotating turbine double-shaft structure
  • Supercritical carbon dioxide axial flow compressor and axial flow counter-rotating turbine double-shaft structure

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] Compared with air, supercritical carbon dioxide has the characteristics of high density and low viscosity, and can achieve a large enthalpy drop under a small pressure drop, so it has good characteristics for power cycle applications, and its power output structure often has small volume , high efficiency and other advantages, can effectively reduce equipment manufacturing and operation and maintenance costs. Based on the above advantages, the present invention proposes a dual-shaft structure of supercritical carbon dioxide axial flow compressor and axial flow counter-rotating turbine to achieve small volume, simple and compact structure and high efficiency power output.

[0022] see figure 1 As mentioned above, the present invention is a dual-shaft structure of supercritical carbon dioxide axial flow compressor and axial flow counter-rotating turbine...

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Abstract

The invention discloses a supercritical carbon dioxide axial flow compressor and axial flow counter-rotating turbine double-shaft structure. The structure comprises an axial flow compressor, an axial flow counter-rotating turbine, a load and a heater; the first output end of the axial flow counter-rotating turbine and the axial flow compressor form a coaxial structure through a low-pressure shaft; the second output end of the axial flow counter-rotating turbine is connected with the load to form a coaxial structure through a high-pressure shaft; a working medium outlet of the axial flow compressor is connected with an inlet of the heater, and an outlet of the heater is connected with a working medium inlet of the axial flow counter-rotating turbine. By adopting the novel structure, the structure is small in size, simple and compact and has higher efficiency; the overall resultant force moment of the structure is reduced due to counter-rotating of a rotary shaft, and therefore the safety and stability of the structure are improved.

Description

technical field [0001] The invention relates to an axial-flow impeller mechanical power output structure, in particular to a dual-shaft structure of an axial-flow compressor and an axial-flow counter-rotating turbine using supercritical carbon dioxide as a working medium. Background technique [0002] The traditional Brayton cycle power output structure using air as the working medium often has the disadvantages of large volume, high temperature parameters and many auxiliary systems. Contents of the invention [0003] The purpose of the present invention is to propose a dual-shaft structure of supercritical carbon dioxide axial flow compressor and axial flow counter-rotating turbine, so as to realize power output with small volume, simple and compact structure and high efficiency. [0004] To achieve the above object, the present invention adopts the following technical solutions: [0005] A double-shaft structure of a supercritical carbon dioxide axial flow compressor an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D19/00F04D29/05
CPCF04D19/00F04D29/05
Inventor 张荻郭鼎谢永慧王雨琦
Owner XI AN JIAOTONG UNIV
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