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Hydraulic turbine design method based on axial surface speed and entropy increase analysis and hydraulic turbine

A technology of hydraulic turbine and design method, applied in the field of turbine, can solve the problems of large hydraulic loss, cumbersome hydraulic design process, unsmooth connection at the elbow of the flow channel, etc. Loss, effect of simple process

Pending Publication Date: 2022-05-17
新疆天富能源售电有限公司 +1
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  • Application Information

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Problems solved by technology

The hydraulic design process of its flow-passing parts is cumbersome, and at the same time, the connection at the elbow of the flow channel is not smooth, and the hydraulic loss is large

Method used

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  • Hydraulic turbine design method based on axial surface speed and entropy increase analysis and hydraulic turbine
  • Hydraulic turbine design method based on axial surface speed and entropy increase analysis and hydraulic turbine
  • Hydraulic turbine design method based on axial surface speed and entropy increase analysis and hydraulic turbine

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Embodiment Construction

[0057] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are intended to facilitate the understanding of the present invention, but do not limit it in any way.

[0058] The hydraulic turbine joint design method based on the axial surface velocity and entropy increase analysis of the present invention is used to determine the axial surface profile of the hydraulic turbine. The basic principle is to correct the area of ​​the flow section through the axial surface velocity, and obtain Transition cross-section shape, and then through entropy increase to analyze the location of significant energy loss, and finally through precise hydraulic control at this point, an efficient flow cross-section shape is obtained.

[0059] The turbine has a front cover plate and a rear cover plate, and the front cover plate and the rear cover plate are kept parallel. There are m...

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Abstract

The invention discloses a hydraulic turbine design method based on axial surface speed and entropy increase analysis and a designed hydraulic turbine. The design method comprises the steps that the inlet diameter and the outlet diameter of a flow channel are determined according to given parameters, the main size of an impeller is preliminarily drawn, and an impeller axial surface projection drawing is drawn; determining a middle line of a flow channel, and then drawing a multi-segment axial surface overflowing section in the flow channel; the axial surface overflowing section speed of each section of flow channel is calculated; the runner is corrected according to the change condition of the speed; the entropy production of each section of flow channel is calculated; an entropy increase area is judged according to entropy production of each section of flow channel, and the flow channel of the entropy increase area is corrected to reduce hydraulic loss; the optimized impeller structure parameters are kept unchanged, the area ratio parameters are adjusted by adjusting the guide vane outlet axial surface width, and the hydraulic turbine efficiency is further optimized; and finally, obtaining each parameter of the optimized hydraulic turbine. The hydraulic turbine is small in hydraulic loss.

Description

technical field [0001] The invention relates to the technical field of turbines, in particular to a hydraulic turbine design method and a hydraulic turbine based on axial surface velocity and entropy increase analysis. Background technique [0002] In recent years, the country has attached great importance to energy conservation and emission reduction, and the development and improvement of liquid energy recovery and utilization technology is of great significance to energy conservation and emission reduction. There are a lot of high-pressure liquids in petrochemical, petroleum processing, seawater desalination, iron and steel metallurgy and other technological processes. In the past, these high-pressure liquids were discharged through pressure reducing valves or orifice plates, and energy was wasted. With the development of liquid residual pressure energy recovery technology, these high-pressure liquids can now achieve the purpose of energy recovery through hydraulic turbin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28F03B3/12G06F113/08G06F119/14
CPCG06F30/28F03B3/121G06F2113/08G06F2119/14Y02E10/20
Inventor 王润生孔伟李奇隽朱锐黎劲松黄超宿向辉杨强李颂东殷辉钟爱民杨志国戚江平曲欣曹紫贤侯高乐摆玉芬李丹
Owner 新疆天富能源售电有限公司
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