OPTIMAL DESIGN ANALYSIS OF PCTFE SEAT STRUCTURE OF ULTRA-LOW TEMPERATURE BALL VALVE BASED ON RESPONSE SURFACE METHOD (MT)

ZHANG XiHeng; YU RongFang; ZHANG Chi; ZHOU Yi; SUN ShuaiJun

doi:10.16579/j.issn.1001.9669.2023.05.021

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OPTIMAL DESIGN ANALYSIS OF PCTFE SEAT STRUCTURE OF ULTRA-LOW TEMPERATURE BALL VALVE BASED ON RESPONSE SURFACE METHOD (MT)

更新时间：2023-11-16

- OPTIMAL DESIGN ANALYSIS OF PCTFE SEAT STRUCTURE OF ULTRA-LOW TEMPERATURE BALL VALVE BASED ON RESPONSE SURFACE METHOD (MT)
- Journal of Mechanical Strength Issue 5, Pages: 1166-1173(2023)
- 作者机构：
  
  1. 兰州理工大学石油化工学院
  2. 博雷(中国)控制系统有限公司
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2023.05.021
  CLC：
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ZHANG XiHeng, YU RongFang, ZHANG Chi, et al. OPTIMAL DESIGN ANALYSIS OF PCTFE SEAT STRUCTURE OF ULTRA-LOW TEMPERATURE BALL VALVE BASED ON RESPONSE SURFACE METHOD (MT). [J]. Journal of Mechanical Strength (5):1166-1173(2023)
DOI：

ZHANG XiHeng, YU RongFang, ZHANG Chi, et al. OPTIMAL DESIGN ANALYSIS OF PCTFE SEAT STRUCTURE OF ULTRA-LOW TEMPERATURE BALL VALVE BASED ON RESPONSE SURFACE METHOD (MT). [J]. Journal of Mechanical Strength (5):1166-1173(2023) DOI： 10.16579/j.issn.1001.9669.2023.05.021.

摘要

为优化超低温下软密封球阀阀座的结构强度，提出以最大等效应力为优化目标，将响应面法与遗传算法相结合的设计方法。研究低温球阀阀座的材料——聚三氟氯乙烯(Polytrifluorochloroe-thylene, PCTFE)在不同工况下的应力-应变关系，得出抗拉强度是判断PCTFE强度的唯一重要依据。采用中心组合设计方法，建立应力关于结构参数的响应面模型，分析参数间的交互效应。基于响应面结合遗传算法得出阀座的最佳结构参数组合。研究结果表明，阀座最大等效应力随着阀座厚度、阀座密封面内外径的增大均有减小趋势，阀座密封面的内径对最大等效应力的影响最显著。

Abstract

To optimize the structural strength of the soft-sealing ball valve seat at ultra-low temperature, a design method combining response surface method and genetic algorithm was proposed, which took the maximum equivalent stress as the optimization objective. The stress-strain relationship of PCTFE, the material of low-temperature ball valve seat, under different working conditions was studied, and the tensile strength is the only important basis to judge the strength of PCTFE. The central combination design method was adopted, established the response surface model of stress on structural parameters, analyzed the interaction between parameters. The optimal structural parameters of valve seat were obtained based on response face combined with genetic algorithm. The results show that the maximum equivalent stress of valve seat decreases with the increase of valve seat thickness and inner and outer diameter of valve seat sealing face. The inner diameter of sealing face of valve seat has the most significant effect on the maximum equivalent stress.

关键词

聚三氟氯乙烯(PCTFE)参数优化响应面法遗传算法

Keywords

PCTFEParameter optimizationResponse surface methodGenetic algorithm

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