﻿ 堵塞工况下过滤器强度研究 Study on Strength of Filter under Blockage Condition

Mechanical Engineering and Technology
Vol. 07  No. 06 ( 2018 ), Article ID: 27819 , 6 pages
10.12677/MET.2018.76053

Study on Strength of Filter under Blockage Condition

Yixiong Liu

Beijing Institute of Aerospace Launch Technology, Beijing

Received: Nov. 7th, 2018; accepted: Nov. 23rd, 2018; published: Nov. 30th, 2018

ABSTRACT

The structure strength of filter under the condition of blockage is studied by experiment to find out the pressure limit of pipeline filter under abnormal working condition. Meanwhile, the static strength and buckling instability of the filter are analyzed by the finite element analysis method. The results show that the filter is likely to breakdown due to the buckling instability of the filter under the condition of complete blockage.

Keywords:Filter, Blockage, Strength

1. 引言

2. 过滤器结构

Figure 1. The diagrammatic sketch of filter

3. 试验装置及试验过程简述

Figure 2. The diagrammatic sketch of filter experiment system

4. 试验结果与分析

4.1. 试验结果与分析

(a) (b)

Figure 3. The tests of filter underblockage conditions. (a) The first test 1 MPa; (b) The second test 1.3 MPa

4.2. 失效骨架检测

Figure 4. The destroy of filter skeleton

Figure 5. Metallographic analysis of filter skeleton

Table 1.Tensile property data of filter skeleton

5. 数值仿真分析

1) 不考虑过滤器外壳结构，不考虑导流锥部分，仅对滤芯和滤网的圆柱段进行建模；

2) 试验时通过在滤网表面外贴胶带的方式模拟滤网堵塞状态，分析时该部分仅作传递载使用，将其与滤网结构统一考虑为0.1mm的均匀圆柱面，等效面与骨架外表面通过接触方式模拟。

Figure 6. Reduced model of filter

Figure 7. The equivalent stress distribution of filter skeleton

Figure 8. The deformation distribution of filter skeleton in linear buckling

Figure 9. The stress distribution of filter skeleton in linear buckling

6. 结论

Study on Strength of Filter under Blockage Condition[J]. 机械工程与技术, 2018, 07(06): 437-442. https://doi.org/10.12677/MET.2018.76053

1. 1. 吴英, 张世红. 床料对流化床颗粒层过滤器过滤元件的压降的影响[J]. 能源技术, 2006, 27(2): 57-59.

2. 2. 张世红, 郑楚光, 刘德昌. 流化床颗粒层过滤器过滤元件阻力实验研究[J]. 华中科技大学学报(自然科学版), 2002, 30(10): 10-13.

3. 3. 李淮颖, 曹家枞, 聂雪丽. 多管式低阻高效空气过滤器的阻力特性研究[J]. 洁净与空调技术, 2003(2): 38-41.

4. 4. 姚培, 潘文群, 李思田. 输油管道网式过滤器压降的实验研究[J]. 管道技术与设备, 2008(3): 32-38.

5. 5. 柳志忠, 郑中, 龙成毅. 网式过滤器的压降计算和试验研究[J]. 机电设备, 2010(5): 55-58.

6. 6. 王宪成, 高希彦, 张豫南, 宁智. 丝网过滤器压降解析模型研究[J]. 大连理工大学学报, 2001, 41(3): 305-309.

7. 7. 谢伟, 李娟, 石玉美, 汪荣顺. 液氮流过烧结金属过滤器的压降特性研究[J]. 低温工程, 2007(3): 40-49.