Design and numerical simulation of inverted bucket pilot-operated steam traps

doi:10.3969/j.issn.1674-8530.2012.03.019

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Design and numerical simulation of inverted bucket pilot-operated steam traps
	Li, Shuxun 1,2; Xu, Dengwei 1; Li, Que 1; Wang, Chaofu 1
刊名	Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering
	2012-05-01
卷号	30 期号:3 页码:346-350
关键词	Bearing capacity Computer simulation Flow fields Flow rate Mufflers Navier Stokes equations Numerical models Pipe flow Pressure drop Rhenium compounds Steam Steam separators and traps Turbulence models Bearing capacity of pressures Comparison and analysis Inverted bucket pilot-operated steam traps Maximum pressure drops Pilot operated valves Pressure drop ratio Standard k epsilons Ultra-high flow rates
ISSN号	16748530
DOI	10.3969/j.issn.1674-8530.2012.03.019
英文摘要	Since the pilot-operated steam trap is subject to a high level of noise and a poor bearing capacity of pressure when it is operated under high temperature, high pressure and high flow rate condition, a new type pilot-operated stream trap, which is in shape of inverted bucket and is applicable for ultra-high flow rate, was designed and developed in the paper. A Mathematical model was set up for the valve, and a two-stage throttle sleeve muffler was designed according to the throttling principles of flow. A numerical simulation of three-dimensional, turbulent flow in the valve was conducted by using the CFD code Fluent based on Reynolds time-averaged N-S equations, the SIMPLEC scheme and the standard k-Ε turbulence model. The results show that the maximum pressure, that the pilot valve can bear, is increased to more than 10 MPa from 6.3 MPa, the maximum working pressure of the pilot-operated steam trap is 8 MPa and its mass flow rate is as high as 30 t/h. By comparison and analysis, it is obtained that the internal flow field in the inverted bucket pilot-operated valve with a muffler is more uniform and the pressure is changed gradually; in consequence, cavitation is avoided effectively. The maximum pressure drop is decreased to 190.8 kPa from 247.7 kPa; accordingly, the total pressure drop is increased by 165.6 kPa and the pressure drop ratio rise to 0.56 from 0.18, further the level of noise is lowered by 33 dB(A). As a result, the result in the paper can provide a reference for the design of inverted bucket pilot-operated steam trap.
语种	中文
出版者	Editorial Department of Journal of Drainage and Irrigation Machinery Engineering
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/111419]
专题	石油化工学院
作者单位	1.School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, Gansu 730050, China; 2.Center of Engineering and Research for Pumps and Special Valves in Machinery Industry, Lanzhou, Gansu 730050, China
推荐引用方式 GB/T 7714	Li, Shuxun,Xu, Dengwei,Li, Que,et al. Design and numerical simulation of inverted bucket pilot-operated steam traps[J]. Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering,2012,30(3):346-350.
APA	Li, Shuxun,Xu, Dengwei,Li, Que,&Wang, Chaofu.(2012).Design and numerical simulation of inverted bucket pilot-operated steam traps.Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering,30(3),346-350.
MLA	Li, Shuxun,et al."Design and numerical simulation of inverted bucket pilot-operated steam traps".Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering 30.3(2012):346-350.