[1]汪东,周博.变容式多腔森林消防泵的内部流场仿真分析[J].林业工程学报,2020,5(01):114-121.[doi:10.13360/j.issn.2096-1359.201904040]
 WANG Dong,ZHOU Bo.Simulation and analysis of internal flow field of variable volume multi-chamber forest fire pump[J].Journal of Forestry Engineering,2020,5(01):114-121.[doi:10.13360/j.issn.2096-1359.201904040]
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变容式多腔森林消防泵的内部流场仿真分析()
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《林业工程学报》[ISSN:1001-8081/CN:32-1160/S]

卷:
5
期数:
2020年01期
页码:
114-121
栏目:
装备与信息化
出版日期:
2020-01-07

文章信息/Info

Title:
Simulation and analysis of internal flow field of variable volume multi-chamber forest fire pump
文章编号:
2096-1359(2020)01-0114-08
作者:
汪东1周博2
1.南京森林警察学院,南京 210023; 2.南京林业大学机械与电子工程学院,南京 210037
Author(s):
WANG Dong1 ZHOU Bo2
1. Nanjing Forestry Police College, Nanjing 210023, China; 2. School of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China
关键词:
森林消防泵 动态网格 流场仿真 数值分析
Keywords:
forest fire pump dynamic grid flow field simulation numerical analysis
分类号:
TH326; TH38
DOI:
10.13360/j.issn.2096-1359.201904040
文献标志码:
A
摘要:
在森林消防以水灭火装备领域,传统离心式消防泵输水距离近、扬程低,而基于三角转子发动机设计的容积泵较少,国内外在相关容积泵的研究上也很匮乏。容积式泵作为新的结构形式泵,具有体积小、输送距离远、扬程高等特点。对基于三角转子发动机进行设计的森林消防泵进行了内部流场仿真分析。建立该消防泵的三维模型,运用UDF编程实现该消防泵三维动网格仿真,选取双方程模型RNG k-ε湍流模型。进水口设为标准大气压,进水口边界条件设置为press-inlet,出水口边界条件设为press-outlet,并在该泵流场内部设置相关参数监测点、监测面,对该森林消防泵进行内部流场模拟,分析其内部流动特性。研究了森林消防泵在进出口管径相同的情况下,不同转速对该森林消防泵内部流场的影响,以及对泵的流速、流量、扬程等性能参数的影响,分别对不同转速下泵的压力场、速度场进行分析可知,在出入口管径不变的工况下,随着转速的提高,泵的出口压力、出口流量均有明显提升。在整个吸水排水过程中,进水排水流畅无滞留现象,泵的工作状态良好。选取流量和扬程作为评价泵性能优劣的指标,并对相关参数进行数值分析可知,提高转速可以提高泵的流量和扬程。当转速为5 000 r/min时,最大出口流量为0.012 7 m3/s,最大出口扬程可达494.65 m。本研究成果对变容式多腔森林消防泵的设计具有一定的参考意义。
Abstract:
In the research field of forest fire extinguishing equipment, the traditional centrifugal fire pump has the drawbacks of short water delivery distance and low lift, which usually is a small volume pump based on the triangular rotor engine design, and the research on the volume of pump is also limited. Volumetric pump, as a new type of structure pump, has the characteristics of small volume, long transmission distance and high lift. In this paper, the internal flow field of forest fire pump designed based on triangular rotor engine was simulated and analyzed. The three-dimensional model of the fire pump was established, and the three-dimensional dynamic grid simulation of the fire pump was realized by the UDF programming. The two-equation RNG k-ε turbulence model was selected. The inlet was set as the standard atmospheric pressure, the inlet boundary condition was set as press-inlet, and the outlet boundary condition was set as press-outlet. The monitoring points and surfaces of relevant parameters were set in the flow field of the pump. The internal flow field of the forest fire pump was simulated and its internal flow characteristics were analyzed. In order to study the influence of different rotational speeds on the flow field inside the forest fire pump under the condition of the same diameter of the inlet and outlet pipes, and on the performance parameters of the pump, such as the flow rate, flow rate and hoisting height, the pressure field and velocity field of the pump under different rotational speeds were analyzed respectively. The results showed that the diameter of the inlet and outlet pipes was constant. Under operating conditions, with the increase of rotational speed, the outlet pressure and flow rate of the pump were significantly increased. In the whole process of water absorption and drainage, the intake and drainage were fluent without detention, and the pump worked well. The flow rate and hoisting height were selected as the indexes to evaluate the performance of the pump, and the numerical analysis of the relevant parameters showed that, the increase in speed can improve the flow rate and hoisting height of the pump. When the speed was 5 000 r/min, the maximum outlet flow was 0.012 7 m3/s and the maximum outlet lift was 494.65 m. The results of this study had certain reference significance for the design of the variable volume multi-chamber forest fire pump.

参考文献/References:

[1] 汪东, 郑楠, 茹煜, 等. 三级提压森林消防泵的设计及流场模拟[J]. 消防科学与技术, 2013, 32(7): 753-757. DOI:10.3969/j.issn.1009-0029.2013.07.016.
WANG D, ZHENG N, RU Y, et al. Design and simulation for inner fluid of the three-level mention pressure forest-fire-extinguishing pump[J]. Fire Science and Technology, 2013, 32(7): 753-757.
[2] 董景辉. 三角转子泵[J]. 化工与通用机械, 1980(11): 19-26.
DONG J H. Triangular rotor pump[J]. Chemical and General Machinery, 1980(11): 19-26.
[3] 姜晨龙, 王青宇. 变容式三角转子泵的设计与分析[J]. 林业机械与木工设备, 2016, 44(2): 17-20. DOI:10.3969/j.issn.2095-2953.2016.02.004.
JIANG C L, WANG Q Y. Design and analysis of variable volume triangle rotor pumps[J]. Forestry Machinery & Woodworking Equipment, 2016, 44(2): 17-20.
[4] 郭海鹏. 类摆线转子泵设计方法及仿真分析[D]. 重庆:重庆大学, 2016.
GUO H P. Design method of an abnormal cycloid rotor pump and simulation analysis[D]. Chongqing: Chongqing University, 2016.
[5] WAN S, LEONG J, BA T, et al. Numerical characterization of the performance of fluid pumps based on a wankel geometry[J]. Journal of Fluids, 2014, 2014:1-7. DOI:10.1155/2014/241010.
[6] DEMENEGO A, VECCHIATO D, LITVIN F L, et al. Design and simulation of meshing of a cycloidal pump[J]. Mechanism and Machine Theory, 2002, 37(3): 311-332. DOI:10.1016/s0094-114x(01)00074-x.
[7] 李术才, 李梦天, 张霄, 等. 基于数值模拟与实验的三角转子泵性能研究[J]. 农业机械学报, 2018, 49(9): 389-396. DOI:10.6041/j.issn.1000-1298.2018.09.046.
LI S C, LI M T, ZHANG X, et al. Investigation on performance of triangular rotor pump based on numerical simulation and experiment[J]. Transactions of the Chinese Society for Agricultural Machinery, 2018, 49(9): 389-396.
[8] 姜晨龙. 变容式三角转子水泵的研究[J]. 江苏科技信息, 2016(24): 61-62. DOI:10.3969/j.issn.1004-7530.2016.24.022.
JIANG C L. Research on the variable volume type triangle rotor pump[J]. Jiangsu Science & Technology Information, 2016(24): 61-62.
[9] 裴海灵, 周乃君, 高宏亮, 等. 三角转子发动机的特点及其发展概况综述[J]. 内燃机, 2006(3): 1-3. DOI:10.3969/j.issn.1000-6494.2006.03.001.
PEI H L, ZHOU N J, GAO H L, et al. The characteristics and improvement of rotary engines[J]. Internal Combustion Engines, 2006(3): 1-3.
[10] 潘剑锋, 肖曼, 范宝伟, 等. 配气相位对三角转子气动发动机性能的影响[J]. 江苏大学学报(自然科学版), 2016, 37(2): 141-146. DOI:10.3969/j.issn.1671-7775.2016.02.004.
PAN J F, XIAO M, FAN B W, et al. Effect of valve timing on wankel rotor air-powered engine[J]. Journal of Jiangsu University(Natural Science Edition), 2016, 37(2): 141-146.
[11] 王慧, 刘汉涛, 李海桥, 等. 柴油机缸盖冷却水腔三维流动数值模拟分析[J]. 液压与气动, 2016(4): 73-76. DOI:10.11832/j.issn.1000-4858.2016.04.014.
WANG H, LIU H T, LI H Q, et al. 3D flow on cooling water chamber of engine cylinder head[J]. Chinese Hydraulics & Pneumatics, 2016(4): 73-76.
[12] 肖曼. 三角转子气动机工作过程的数值模拟研究[D]. 镇江: 江苏大学, 2016.
XIAO M. Numerical study in work process of air-powered rotary engine[D]. Zhenjiang: Jiangsu University, 2016.
[13] 潘剑锋, 黄明财, 范宝伟, 等. 点火位置对汽油转子发动机燃烧过程的影响[J]. 车用发动机, 2017(1): 59-64. DOI:10.3969/j.issn.1001-2222.2017.01.011.
PAN J F, HUANG M C, FAN B W, et al. Influence of ignition position on combustion process of gasoline rotor engine[J]. Vehicle Engine, 2017(1): 59-64.
[14] POSA A, LIPPOLIS A. A LES investigation of off-design performance of a centrifugal pump with variable-geometry diffuser[J]. International Journal of Heat and Fluid Flow, 2018, 70: 299-314. DOI:10.1016/j.ijheatfluidflow.2018.02.011.
[15] 汪东, 郑楠, 姜晨龙, 等. 便携式森林消防泵研究现状及发展趋势[J]. 森林防火, 2014(4): 37-39. DOI:10.3969/j.issn.1002-2511.2014.04.013.
WANG D, ZHENG N, JIANG C L, et al. Research status and development trend of portable forest fire pump[J]. Forest Fire Prevention, 2014(4): 37-39.

备注/Memo

备注/Memo:
收稿日期:2019-04-23 修回日期:2019-05-28
基金项目:江苏省“333高层次人才培养工程”(BRA2016429); 江苏高校“青蓝工程”项目; 江苏省重点建设学科“林学”。
作者简介:汪东,男,副教授,研究方向为森林消防设备与装备。E-mail:83184424@qq.com
更新日期/Last Update: 2019-12-10