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Optimizing design method of two-phase low temperature liquid expansion machine cavitation resistance

A low-temperature liquid, optimized design technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as public reports on the anti-cavitation technology of two-phase liquid expanders, and achieve improved performance and operational stability. Avoid vibration and downtime as well as the effect of

Active Publication Date: 2018-06-22
开山(西安)透平机械有限公司
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Problems solved by technology

[0008] At present, there are no public reports on the anti-cavitation technology of two-phase liquid expanders in terms of domestic and foreign scope.

Method used

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  • Optimizing design method of two-phase low temperature liquid expansion machine cavitation resistance
  • Optimizing design method of two-phase low temperature liquid expansion machine cavitation resistance
  • Optimizing design method of two-phase low temperature liquid expansion machine cavitation resistance

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Embodiment Construction

[0029] The present invention is described in further detail below in conjunction with accompanying drawing:

[0030] The anti-cavitation optimization design method of the two-phase low-temperature liquid expander of the present invention includes the research on the vortex cavitation mechanism of the two-phase low-temperature liquid expander considering the thermodynamic effect of the low-temperature fluid, the geometry of the vortex cavitation flow in the two-phase low-temperature liquid expander Parameter sensitivity analysis, characterization of complex vortex cavitation flow in two-phase cryogenic liquid expander, construction of flow field optimization objective function for controlling vortex cavitation flow, optimal control of vortex cavitation flow and anti-cavitation Parallel solution of optimization design problems.

[0031]1. Research on the vortex cavitation mechanism of two-phase cryogenic liquid expander considering the thermodynamic effect of cryogenic fluid

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Abstract

The invention discloses an optimizing design method of two-phase low temperature liquid expansion machine cavitation resistance. The optimizing design method comprises the steps of considering vortexcavitation mechanism research, considering a low temperature fluid thermodynamics effect, of a two-phase low temperature liquid expansion machine, geometric parameter sensitivity analysis of vortex cavitation flow in the two-phase low temperature liquid expansion machine and characterized expression of complex vortex cavitation flow in the two-phase low temperature liquid expansion machine, building a flow field optimizing target function with the purpose of controlling vortex cavitation flow, conducting optimizing control on the vortex cavitation flow and parallelly solving a cavitation resistance optimizing design problem. By means of the method, the performance and running stability of the two-phase low temperature liquid expansion machine can be effectively improved.

Description

technical field [0001] The invention belongs to the technical fields of low-temperature air separation and low-temperature liquefaction, and relates to an optimal design method for anti-cavitation of a two-phase low-temperature liquid expander. Background technique [0002] As a kind of hydraulic machinery, cryogenic liquid expander is similar to traditional hydraulic (or hydraulic) machinery, and cavitation inevitably occurs. The collapse of cavitation bubbles will generate extremely high local pressure, which will cause a great impact on the surface material of the structure, resulting in cavitation corrosion damage; it will also induce unit vibration, threatening the stable operation of the liquid expander and even the low temperature system. Therefore, the effective suppression of the vortex cavitation flow in cryogenic liquid expanders is of great significance. [0003] Cavitation phenomenon refers to the phenomenon that the partial pressure of the liquid is lower than...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17
Inventor 宋鹏孙金菊霍长江
Owner 开山(西安)透平机械有限公司
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