低能耗喷气涡流纺喷嘴气流场数值模拟与纺纱实验

摘要/Abstract

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参考文献 13

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doi:10.13475/j.fzxb.20240401001

摘要：

为探究喷嘴气压与喷射孔数量对喷气涡流纺喷嘴能耗与气流机械能特性的影响规律,采用计算流体动力学对喷嘴内气流流动特征进行数值模拟,基于静压特性和机械能特性对喷嘴耗气量和成纱强度进行预测,并与纺纱实验结果进行对比分析。结果表明:随着喷嘴气压的增加,喷嘴内静压值总体呈现降低趋势,而喷射孔出口附近静压值增加,喷嘴内气流机械能随喷嘴气压增加而呈现增大的趋势;随着喷射孔数量的增加,喷嘴内静压值呈现先降低后增加的趋势,而喷射孔出口处静压变化并不显著,加捻腔内气流的机械能呈现先增加后降低的趋势,而锭子与涡流管间环形区域中气流的机械能单调递增。基于数值模拟对耗气量和成纱强度的预测与实验测试结果一致,为揭示参数对喷气涡流纺成纱过程中喷嘴能耗的影响提供有效的方法,为低能耗喷气涡流纺纱喷嘴的设计提供理论参考。

关键词: 喷气涡流纺, 喷嘴, 流场, 机械能, 耗气量, 数值模拟

Abstract:

Objective Vortex spinning has been developed rapidly in recent years due to its unique advantages. However, the issue of excessive energy consumption of the vortex spinning nozzle is still unresolved. In order to reduce the energy consumption during the vortex spinning process without significantly influence the yarn strength, this study investigates the effect of the nozzle pressure (P) and the number of the injectors (N) on the air consumption of the nozzle and the strength of vortex spun yarn.

Method The computational fluid dynamics (CFD) method was adopted to simulate the airflow characteristics inside the nozzle. The air consumption and the yarn tenacity were predicted based on the static pressure and mechanical energy of the airflow. The air flow rate and yarn strength were experimentally measured to verify the numerical results.

Result Due to the pressure difference between the nozzle inlet and the vortex chamber, the mechanical energy of the airflow slightly increased in the fiber guiding passage. The mechanical energy of the airflow reached its maximum value in the region around the spindle tip with the influence of the air-jet. Then the mechanical energy of the airflow exhibited a decreasing trend in the annular region between the spindle and the vortex tube along the positive Z-axis. With the increase of nozzle pressure from 0.4 MPa to 0.6 MPa, the static pressure in the vortex chamber and the annular region between the spindle and the vortex tube generally showed a decreasing trend, as the static pressure at the injector exits was increases. The pressure difference between the air reservoir and the injector exits was further increased along with the increase of the nozzle pressure, resulting in the increase of air consumption. The mechanical energy of the airflow in the vortex chamber was slightly increased with the increase of the nozzle pressure, resulting in an increased efficiency of fiber separation. The mechanical energy of the airflow was increased significantly in the annular region between the spindle and the vortex tube, resulting in an initial increase followed by a decrease in the twisting efficiency. With the increase of the number of injectors, the static pressure was first decreased and then increased in the vortex chamber, while the pressure in the annular region between the spindle and the vortex tube was decreased. There was negligible variation in the static pressure at the injector exits, this gaving an insignificant difference in the flow rate through a single injector. The mechanical energy of the airflow in the vortex chamber was first increased and then decreased with the increase of the number of injectors, while the mechanical energy of the airflow in the annular region between the spindle and the vortex tube was increased monotonously. It is crear that either an excessive or an insufficient number of injectors was favorable for fiber separation and twist insertion. The experimental measurements showed that the flow rate of the airflow entering the nozzle exhibiteds an increasing trend as P increases, while the yarn tenacity was initially increased and then decreased. With the increase of N, the flow rate of the airflow entering the nozzle tended to be directly proportional to the number of injectors, while the yarn tenacity was first increased followed by a decrease.

Conclusion The mechanical energy of the airflow is low in the vortex chamber and the yarn passage, while was relatively high in the annular region between the vortex tube and the spindle. With the nozzle pressure was increased from 0.4 MPa to 0.6 MPa. It was found that the air consumption of the nozzle is positively related to the number of injectors. The prediction of air consumption is generally consistent with the experimental measurement of the flow rate. The mechanical energy of the airflow in the nozzle was increased as P increases, and as N increases, the mechanical energy of the airflow in the vortex chamber initially is increases and then decreases. The prediction of yarn strength is consistent with the experimental measurements. Overall, considering the requirement for yarn tenacity, the air consumption of the nozzle is the minimum when P=0.45 MPa and N=4.

Key words: vortex spinning, nozzle, flow field, mechanical energy, air consumption, numerical simulation

中图分类号:

TS112.2

奚传智, 王家源, 王泳智, 陈革, 裴泽光. 低能耗喷气涡流纺喷嘴气流场数值模拟与纺纱实验[J]. 纺织学报, 2024, 45(12): 206-214.

XI Chuanzhi, WANG Jiayuan, WANG Yongzhi, CHEN Ge, PEI Zeguang. Numerical simulation of airflow field in nozzle of vortex spinning with low energy consumption and spinning experimentation[J]. Journal of Textile Research, 2024, 45(12): 206-214.

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链接本文: http://www.fzxb.org.cn/CN/10.13475/j.fzxb.20240401001

http://www.fzxb.org.cn/CN/Y2024/V45/I12/206

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[1]	邵英海, 赵业平, 韩贤国, 等. 喷气涡流纺纱机及其关键技术的应用与研究进展[J]. 纺织学报, 2024, 45(3): 209-218.
	SHAO Yinghai, ZHAO Yeping, HAN Xianguo, et al. Study on fiber mixing effect in ring spun, rotor and air-jet-vortex spun color blended yarns[J]. Journal of Textile Research, 2024, 45(3): 209-218.
[2]	YANG R H, PAN B, WANG L J, et al. Blending effects and performance of ring-, rotor-, and air-jet-spun color-blended viscose yarns[J]. Cellulose, 2021, 28(3):1769-1780.
[3]	杨克孝, 虞明聪, 孙江挺. 纯棉喷气涡流色纺纱成纱质量的影响因素分析[J]. 棉纺织技术, 2020, 48(12): 47-50.
	YANG Kexiao, YU Mingcong, SUN Jiangting. Analysis on influencing factors of pure cotton air-jet vortex spinning yarn quality[J]. Cotton Textile Technology, 2020, 48(12): 47-50.
[4]	缪璐璐, 董正梅, 朱繁强, 等. 芯丝种类与纺纱速度对喷气涡流纺包芯纱性能的影响[J]. 纺织学报, 2023, 44(12): 50-57.
	LIAO Lulu, DONG Zhengmei, ZHU Fanqiang, et al. Influence of core filament type and delivery speed on performance of air-jet vortex spun core-spun yarns[J]. Journal of Textile Research, 2023, 44(12): 50-57.
[5]	BHATTI MRA, TAUSIF M, MIR M A, et al. Effect of key process variables on mechanical properties of blended vortex spun yarns[J]. Journal of The Textile Institute, 2019, 110(6): 932-940.
[6]	邹专勇, 缪璐璐, 董正梅, 等. 喷气涡流纺工艺对粘胶/涤纶包芯纱性能的影响[J]. 纺织学报, 2022, 43(8): 27-33.
	ZOU Zhuanyong, LIAO Lulu, DONG Zhengmei, et al. Effect of air-jet vortex spinning process on properties of viscose/polyester core-spun yarns[J]. Journal of Textile Research, 2022, 43(8): 27-33.
[7]	梁高翔, 王青, 吕绪山, 等. 喷气涡流纺喷嘴参数对内流场特性的影响[J]. 轻工机械, 2023, 41(1):16-22.
	LIANG Gaoxiang, WANG Qing, LÜ Xushan, et al. Influence of nozzle parameters on internal flow field characteristics of air-jet vortex spinning[J]. Light Industry Machinery, 2023, 41(1): 16-22.
[8]	朱江阳, 奚传智, 王泳智, 等. 抽吸孔结构对喷气涡流纺喷嘴气流场的影响[J]. 棉纺织技术, 2023, 51(8):19-25.
	ZHU Jiangyang, XI Chuanzhi, WANG Yongzhi, et al. Effects of air suction hole structure on nozzle airflow of air jet vortex spinning[J]. Cotton Textile Technology, 2023, 51(8): 19-25.
[9]	PEI Z G, WANG X B, LI Z, et al. Effect of process and nozzle structural parameters on the wrapping quality of core-spun yarns produced on a modified vortex spinning system[J]. Textile Research Journal, 2021, 91(15/16): 1841-1856.
[10]	RAO X X, JIN C, ZHANG H T, et al. A hybrid microchannel heat sink with ultra-low pressure drop for hotspot thermal management[J]. International Journal of Heat and Mass Transfer, 2023, 211: 124201.
[11]	XU X G, FANG L, LI A J, et al. 3D numerical investigation of energy transfer and loss of cavitation flow in perforated plates[J]. Engineering Applications of Computational Fluid Mechanics, 2020, 14(1): 1095-1105.
[12]	SHANG S S, YANG J P, YU C W. Numerical simulation of the airflow field in vortex spinning processing[J]. Textile Research Journal, 2019, 89(6): 1113-1127.
[13]	CENGEL Y A, CIMBALA J M. Fluid mechanics: fundamentals and applications[M]. New York: McGraw-Hill, 2014: 194-196.

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工况	喷嘴气压/MPa	喷射孔数量/个
1	0.40	4
2	0.45	4
3	0.50	4
4	0.55	4
5	0.60	4
6	0.50	3
7	0.50	5
8	0.50	6

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