喷洒器蒸汽浸没射流汽羽长度实验研究

王珏; 陈力生; 刘乐; 胡晨; 张伟

doi:10.13832/j.jnpe.2021.04.0086

喷洒器蒸汽浸没射流汽羽长度实验研究

doi: 10.13832/j.jnpe.2021.04.0086

王珏^{1, 2,},
陈力生¹,
刘乐^{1, 2},
胡晨²,
张伟³

1.
海军工程大学核科学技术学院，武汉，430033
2.
武汉第二船舶设计研究所，武汉，430064
3.
上海交通大学核科学与工程学院，上海，200240

基金项目: 国家重点研发计划（2017YFC0307800）

详细信息

作者简介:
王　珏（1989—），男，工程师，博士研究生，现主要从事核安全分析工作，E-mail: wangjuebey@sina.com

中图分类号: TL334
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- 被引次数: 0
出版历程
- 收稿日期: 2020-06-12
- 修回日期: 2020-12-30
- 刊出日期: 2021-08-15

Experimental Investigation on Plume Length of Submerged Steam Jet through Spargers

Wang Jue^{1, 2
,},
Chen Lisheng¹,
Liu Le^{1, 2},
Hu Chen²,
Zhang Wei³

1.
College of Nuclear Science and Technology, Naval University of Engineering, Wuhan, 430033, China
2.
Wuhan Second Ship Design and Research Institute, Wuhan, 430064, China
3.
School of Nuclear Science and Engineering, Shanghai Jiaotong University, Shanghai, 200240, China

摘要

摘要: 以孔径分别为4、10、16 mm的侧开孔I型喷洒器为实验件，对质量流速为300~1100 kg·m⁻²·s⁻¹的饱和蒸汽浸没在温度为35~65℃的过冷水中的直接接触式冷凝开展实验研究。结果表明：孔径不变时，汽羽贯穿长度基本随蒸汽质量流速和池水温度的升高而增大；大孔径喷洒器的汽羽长度与直管式喷嘴的汽羽长度接近，拟合值与实验值的偏差在±15%以内；小孔径喷洒器的汽羽长度明显低于直管式喷嘴，拟合值与实验值的偏差最高达80%；采用收缩喷管流量公式对蒸汽质量流速进行修正，拟合值与实验值的偏差在±20%以内，由实验值拟合的新关系式的预测误差在±10%以内。
- 蒸汽浸没射流 /
- 喷洒器 /
- 汽羽长度
Abstract: The direct contact condensation of saturated steam with a mass flux between 300 and1100 kg·m⁻²·s⁻¹ submerged in the subcooled water at a temperature of 35 to 65℃ was studied experimentally with I-type side-opening spargers, which apertures were 4, 10 and 16 mm, respectively. The results show that: when the aperture is fixed, the penetration length of the steam plume increases with the increasing of the steam mass flux and the pool water temperature. The penetration length of the steam plume through a large-opening sparger is close to that through a straight nozzle, and the deviation between the fitting value and the experimental value is within ±15%. The penetration length of the steam plume through a small-opening sparger is obviously lower than that through a straight nozzle, and the deviation between the fitting value and the experimental value is up to 80%. The steam mass flux is re-calculated utilizing the correlation specified for a contraction nozzle to consider the injecting characteristic of an I-type sparger, and the deviation between the fitted value and the experimental value is within ±20%. A new semi-empirical correlation is fitted and the discrepancy between the prediction and the experimental value is within ±10%.
- Submerged steam jet /
- Sparger /
- Steam plume length

HTML全文

图 1 实验装置示意图

Figure 1. Schematic Diagram of Experimental Rig

下载: 全尺寸图片幻灯片

图 2 喷洒器结构示意图

Figure 2. Schematic Diagram of the Sparger

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图 3 汽羽贯穿长度随汽水参数变化趋势

G—蒸汽质量流速；d—排放孔径

Figure 3. Steam Penetration Length at Different Steam and Water Parameters

下载: 全尺寸图片幻灯片

图 4 蒸汽羽模型示意图^[10]

Figure 4. Schematic Diagram of the Steam Plume^[10]

下载: 全尺寸图片幻灯片

图 5 汽羽贯穿长度预测值与实验值的偏差图

Figure 5. Comparison between Predictions and Experimental Values of Steam Penetration Length

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表 1 实验工况

Table 1. Experimental Conditions

实验参数	数值
蒸汽质量流速（排放孔径）	300~400 kg·m⁻²·s⁻¹（Φ16 mm） 500 kg·m⁻²·s⁻¹（Φ10 mm） 1100 kg·m⁻²·s⁻¹（Φ4 mm）
池水温度	35~65 ℃
排放孔浸没深度	1250 mm
冷凝水箱尺寸	直径1 m，高1.7 m

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参考文献(15)

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