大口径激光发射系统卷帘式窗口密封特性分析

基于600 mm口径的某激光发射系统, 提出了一种卷帘覆盖压紧式密封方法, 卷帘采用卷曲收放结构, 通过电机驱动卷轴转动带动同步带运动, 同时利用弹性拉紧机构拉紧卷帘, 使卷帘在收放运动过程中一直保持紧贴密封平面来达到密封效果。通过理论分析与有限元建模仿真, 对其密封特性进行了分析, 得出密封平面的结构形式是影响密封性能的主要因素。通过分析比较, 选取PVC作为卷帘材料。设计的结构为密封凸起平面形式, 卷帘厚度为0.5 mm, 结构边缘带有30°倒角。对其密封特性进行有限元仿真分析, 得出卷帘中心挠度为6.269 mm。在设计指标所允许的的极限载荷下卷帘所受应力远小于材料拉伸强度, 不会破坏。满足密封要求。

Abstract

Based on a laser emission system of aperture 600 mm, a rolling blinds sealing method was presented. For the rolling blinds, a curly replay structure was applied to drive the synchronous belt through the motor drive roll. At the same time, the rolling blinds was tightened by the elastic tightening mechanism to keep the blinds close to the seal plane to achieve the sealing effect. By theoretical analysis and numerical simulation of Finite Element Analysis, the sealing characteristics were studied. It can be concluded that the structure of the seal plane are the main factors affecting the sealing performance. By analysis and comparison, PVC is selected to be the material for rolling blinds. The designed structure is a sealed protuberance with a chamfering of 30° and thickness of rolling blinds is 0.5 mm. The Finite Element Analysis of the sealing characteristics shows that the center deflection of the rolling blinds is 6.269 mm. Under the limit load allowed by the design requirements, the stress of the rolling blinds is far less than the tensile strength of the material and will not be destroyed. The designed window satisfies the sealing requirements.

参考文献

[1] Baker L R. Opto-mechanical systems design[J]. Journal of Modern Optics, 1986, 33(11): 1335-1336.

[2] 冯峰, 贺少勃, 袁晓东, 等. 污染物致光学元件损伤特性研究进展[J]. 激光与红外, 2012, 42(10): 1098-1102.

Feng Feng, He Shaobo, Yuan Xiaodong, et al. Progress in research on damage character-istics of optical elements induced by pollutants [J]. Laser and Infrared, 2012, 42(10): 1098-1102. (in Chinese)

[3] 刘天华, 姜宗福, 刘泽金, 等. 高能激光器气动窗口光束质量的评价方法探讨[J]. 强激光与粒子束, 2002, 14(2): 193-196.

Liu Tianhua, Jiang Zongfu, Liu Zejin, et al. Method of evaluating optical quality of aerodynamic windows for high energy[J]. High Power Laser and Particle Beams, 2002, 14(2): 193-196. (in Chinese)

[4] 范达, 明星, 刘昕悦, 等. 高空高速环境热光学分析及光学窗口设计[J]. 红外与激光工程, 2016, 45(8): 0818001.

Fan Da, Ming Xing, Liu Xinyue, et al. Thermal optical analysis and design of optical window in high altitude and high-speed environment[J]. Infrared and Laser Engineering, 2016, 45(8): 0818001. (in Chinese)

[5] 冯志庆, 白兰, 张增宝, 等. 高能激光反射镜热变形补偿[J]. 光学精密工程 2010, 18(8): 1781-1787.

Feng Zhiqing, Bai Lan, Zhang Zengbao, et al. Thermal deformation compensation of high energy laser reflector [J]. Optics and Precision Engineering, 2010, 18(8): 1781-1787. (in Chinese)

[6] David V. Laser weapons development by 2023[R]. U.S: Department of Defense Information/FIND, 2016.

[7] 张阔, 陈飞, 李若斓, 等. 大功率CO2激光器输出窗口热性能分析[J]. 红外与激光工程, 2017, 46(2): 0205005.

Zhang Kuo, Chen Fei, Li Ruolan, et al. Analysis on thermal performance of output window in high power CO2 laser[J]. Infrared and Laser Engineering, 2017, 46(2): 0205005. (in Chinese)

[8] 李怡勇, 王建华, 李智. 高能激光武器发展态势[J]. 兵器装备工程学报, 2017, 38(6): 1-6.

Li Yiyong, Wang Jianhua, Li Zhi. Development trend of high-energy laser weapons[J]. Journal of Ordnance and Equipment Engineering, 2017, 38(6): 1-6. (in Chinese)

[9] Peng Yufeng, Sheng Zhaoxia, Zhang Hu, et al. Influence of thermal deformations of the output windows of high-power laser systems on beam characteristics[J]. Applied Optics, 2004, 43(35): 6465-6472.

[10] 刘旭堂, 高云国, 邵帅, 等. 大口径宽波段高能激光发射窗口的设计与测试[J]. 光学精密工程, 2014, 22(7): 1834-1841.

Liu Xutang, Gao Yunguo, Shao Shuai, et al. Design and test of high energy laser emission window of large aperture and wide band [J]. Optics and Precision Engineering, 2014, 22(7): 1834-1841. (in Chinese)

[11] 周超, 杨洪波, 吴小霞, 等. 1.2 m望远镜风载作用分析[J].红外与激光工程, 2011, 40(5): 889-893.

Zhou Chao, Yang Hongbo, Wu Xiaoxia, et al. Wind load analysis of 1.2 m telescope[J]. Infrared and Laser Engineering, 2011, 40(5): 889-893. (in Chinese)

[12] 吴建梁. 受预张力薄膜的轴对称大挠度问题[D]. 重庆: 重庆大学, 2009: 20-30.

Wu Jianliang. Axisymmetric large deflection problem of pretension thin films[D]. Chongqing: Chongqing University, 2009: 20-30. (in Chinese)

[13] 钱伟长, 叶开沅. 圆薄板大挠度问题[J]. 物理学报, 1954(3): 209-238.

Qian Weichang, Ye Kaiyuan. Large deflection problems of circular thin plates [J]. Acta Physica Sinica, 1954(3): 209-238. (in Chinese)

, , , . 大口径激光发射系统卷帘式窗口密封特性分析[J]. 红外与激光工程, 2019, 48(5): 0506005. Ren Tianci, Shao Shuai, Meng Lingwu, Wang Kui. Analysis of sealing characteristics of rolling blinds window for large aperture laser emission system[J]. Infrared and Laser Engineering, 2019, 48(5): 0506005.

大口径激光发射系统卷帘式窗口密封特性分析

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