多载荷作用下内压对烟风道安全性的影响

doi:10.6040/j.issn.1672-3961.0.2018.142

摘要/Abstract

摘要：

为研究大型圆形烟风道的加固肋设计选型规律,采用有限元数值计算的方法,在不同积灰厚度、不同加固肋型号、不同加固肋数量时,分析内压对电厂烟风道的强度和屈曲安全性的影响。结果表明,圆形烟风道的应力主要为主支座与道体接触区域,自重力是道体产生应力的主要原因。对于大直径烟风道,负压时道体应力大于零压和正压时的应力。直径越大,应力会随负压的增大而快速增大,负压管段不宜采用大直径管道。积灰厚度对道体应力的影响较小,积灰越多道体越不容易发生屈曲,考虑积灰的设计中应当校核无积灰时的屈曲安全系数。

关键词: 电厂, 烟风道, 加固肋, 多重载荷, 有限元

Abstract:

To study the stiffener design discipline of large scale circular exhaust duct, finite element method was used to analyze the impacts on the strength, flexibility and buckling security from internal pressure load under different ash thickness, different number and specification stiffeners. The results indicated that the main stress on the circular duct lied on the contact zone of duct and support, the self-weight was the main factor of stress. For the large diameter duct, the stress under negative press was much higher than the condition of zero pressure and positive pressure. And for the large diameter duct, the stress may rapidly increase while the negative pressure rising, and the large diameter should not be used on negative duct. The ash thickness had smaller impact on the stress of duct, the buckling may less happen while the duct was thicker. The buckling factor of non-dusty condition should be checked on the design of considering dusty thickness.

Key words: power station, exhaust duct, stiffener, multi-loads, finite element method

中图分类号:

TK08

王龙林,胡训栋,祁金胜,安春国,王湛. 多载荷作用下内压对烟风道安全性的影响[J]. 山东大学学报 (工学版), 2018, 48(6): 116-121.

Longlin WANG,Xundong HU,Jinsheng QI,Chunguo AN,Zhan WANG. Influence of internal pressure on the safety of exhaust duct under multiple loads[J]. Journal of Shandong University(Engineering Science), 2018, 48(6): 116-121.

图/表 6

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参考文献 20

1	黄树红. 汽轮机原理[M]. 北京: 中国电力出版社, 2008.
2	中华人民共和国国家经济贸易委员会.火力发电厂烟风煤粉管道设计技术规程: DL/T 2121—2000[S].北京:中国电力出版社, 2000.
3	钱成续. 火力发电厂烟风煤粉管道设计技术规程配套设计计算方法[M]. 北京: 中国电力出版社, 2004.
4	中国电力企业联合会.电厂动力管道设计规范: GB 50764—2012[S].北京:中国计划出版社, 2012.
5	冯道显. 地震荷载对烟风道加固肋选型的影响[J]. 电力勘测设计, 2013, 2 (4): 43- 45.
	FENG Daoxian . Effect of earthquake load on air and gas ducts reinforce rib selection[J]. Electric Power Survey and Design, 2013, 2 (4): 43- 45.
6	赵经濂, 傅文玲, 杨虹. 脱硫烟道壁厚及其加固肋设计优化探讨[J]. 电力设备, 2005, 6 (11): 70- 72.
	ZHAO Jinglian , FU Wenling , YANG Hong . Research on the optimum design of FGD flue thickness and its reinforcement[J]. Electrical Equipment, 2005, 6 (11): 70- 72.
7	邓海文. 烟风道加固肋组合截面特性计算[J]. 湖北电力, 2011, 35 (1): 52- 53, 67. doi: 10.3969/j.issn.1006-3986.2011.01.023
	DENG Haiwen . Reaserch on calculation of air & flue gas ducts stiffener combination section characteristic[J]. Hubei Electric Power, 2011, 35 (1): 52- 53, 67. doi: 10.3969/j.issn.1006-3986.2011.01.023
8	王欣, 郭小明, 张辉, 等. 火力发电厂烟风煤粉管道加固肋设计计算分析[J]. 电力科学与工程, 2006, (3): 17- 20. doi: 10.3969/j.issn.1672-0792.2006.03.005
	WANG Xin , GUO Xiaoming , ZHANG Hui , et al. Design analysis of stiffening ribs for air, flue gas and pulverized coal piping in thermal power plants[J]. Power Science and Engineering, 2006, (3): 17- 20. doi: 10.3969/j.issn.1672-0792.2006.03.005
9	陈素珍, 侯庆伟. 基于ANSYS的脱硫烟道结构分析[J]. 热机技术, 2007, (3): 29- 32.
	CHEN Suzhen , HOU Qingwei . Structure analysis of gas-duct based on ANSYS[J]. Heat Power Technics, 2007, (3): 29- 32.
10	侯庆伟, 李永臣, 高善彬. 基于ANSYS的脱硫烟道结构有限元分析[J]. 电力环境保护, 2007, 23 (4): 47- 49. doi: 10.3969/j.issn.1674-8069.2007.04.015
	HOU Qingwei , LI Yongchen , GAO Shanbin . Finite element analysis of gas-duct structure based on ANSYS in WFGD[J]. Electric Power Environmental Protection, 2007, 23 (4): 47- 49. doi: 10.3969/j.issn.1674-8069.2007.04.015
11	周锐. 大容量机组圆形烟道设计特点[J]. 发电设备, 2010, 24 (3): 190- 192. doi: 10.3969/j.issn.1671-086X.2010.03.009
	ZHOU Rui . Design features of circular flues for large capacity power units[J]. Power Equipment, 2010, 24 (3): 190- 192. doi: 10.3969/j.issn.1671-086X.2010.03.009
12	袁江涛.火电厂圆形烟风道设计中的有限元分析方法[D].重庆:重庆大学, 2011.
	YUAN Jiangtao. Finite element method in design of circular exhaust duct of thermal power unit[D]. Chongqing: Chongqing University, 2011.
13	郭娟丽. ANSYS在电厂烟风道设计中的应用[J]. 电力勘测设计, 2015, 4 (8): 38- 41. doi: 10.3969/j.issn.1671-9913.2015.08.016
	GUO Juanli . Application of ANSYS to flue gas and air duct design in power plant[J]. Electric Power Survey & Design, 2015, 4 (8): 38- 41. doi: 10.3969/j.issn.1671-9913.2015.08.016
14	石亚超, 朱桂明, 郝若锦, 等. 圆形烟道在烟气脱硫装置中的应用探讨[J]. 化工机械, 2013, 40 (3): 369- 412. doi: 10.3969/j.issn.0254-6094.2013.03.023
	SHI Yachao , ZHU Guiming , HAO Ruojin , et al. Research on circular flue application in flue gas desulfurization system[J]. Chemical Machinery, 2013, 40 (3): 369- 372. doi: 10.3969/j.issn.0254-6094.2013.03.023
15	祁金胜, 安春国, 王湛. 矩形和圆形烟风道加固肋设计的比较[J]. 锅炉技术, 2017, 48 (2): 26- 29. doi: 10.3969/j.issn.1672-4763.2017.02.006
	QI Jinsheng , AN Chunguo , WANG Zhan . Comparison of the design of stiffener of rectangular and round exhaust-duct[J]. Boiler Technology, 2017, 48 (2): 26- 29. doi: 10.3969/j.issn.1672-4763.2017.02.006
16	祁金胜, 安春国, 柏洁, 等. 圆形烟风道支座与加固肋匹配特性[J]. 山东大学学报(工学版), 2017, 47 (1): 125- 130.
	QI Jinsheng , AN Chunguo , BAI Jie , et al. Study on matching property of supports and stiffener on circular exhaust duct[J]. Journal of Shandong University (Engineering Science), 2017, 47 (1): 125- 130.
17	BONDER S R . General instability of a ring-stiffened circular cylindrical shell under hydrostatic pressure[J]. Journal of Applied Mechanics, 1957, 269- 277.
18	KRUPKA V . Buckling and limit carrying capacity of saddle loaded shells in stability of plate and shell structures[J]. Proceedings of the ECCS Colloquium on Stability of Plate and Shell Structures, 2014, 617- 622.
19	全国压力容器标准化技术委员会.容器支座(第一部分鞍式支座): JB/T 4712.1—2007[S].北京:中国标准出版社, 2007.
20	全国钢标准化技术委员会.热轧型钢: GB/T 706—2008[S].北京:中国标准出版社, 2008.

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