A new cavity profile for a diaphragm compressor used in hydrogen fueling stations
A new cavity profile for a diaphragm compressor used in hydrogen fueling stations
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加氢站隔膜压缩机的新型腔型
DOI：
10.1016/j.ijhydene.2017.08.058
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发表时间：
2017-09
影响因子：
7.2
通讯作者：
Wang Wen
中科院分区：
文献类型：
--
作者：
Hu Yuanlin;Xu Xiaoying;Wang Wen
金属膜片断裂造成的使用寿命短是加氢用膜片压缩机的主要缺点之一。为了减小紧贴空腔表面的膜片油气两侧的最大径向应力，采用复合优化方法提出了一种新的空腔轮廓母线。优化中，在均匀压力载荷下，空腔母线的凸部受到母线斜率小于变形膜片的约束。该约束旨在避免气体排放过程结束时的空腔死体积。因此，首先给出了在均压载荷作用下边缘夹紧金属膜片挠度的解析解。该方法采用最小能量原理和基于大挠度薄板理论的瑞利-里兹方法。采用实验测量和有限元方法验证了该方法的有效性。分析结果与实测和有限元模拟结果吻合较好。其次，计算了具有特定挠度的膜片的应力，并以膜片气侧和油侧的径向应力作为目标函数。最后，通过优化得到一个新的母线阵。通过有限元模拟验证了膜片附着在新型腔上的径向应力，结果吻合较好。在气体排放过程结束时，新的母线消除了空腔死体积。此外，在相同设计参数下，将新母线与传统母线的工作膜片的最大径向应力和中心径向应力进行了比较，发现膜片的最大径向应力和中心径向应力分别降低了8.2%和13.9%。基于所提出的设计方法，进一步讨论了空腔体积、空腔半径、膜片厚度和膜片材料性能对工作膜片最大径向应力的影响。
The short operating life of metallic diaphragm caused by fracture is one of the main disadvantages for diaphragm compressors used in hydrogen fueling stations. A new generatrix for cavity profile is proposed through optimization using the complex method to decrease the maximal radial stresses on both oil and gas sides of the diaphragm clinging to the cavity surface. In the optimization, the convex part of the cavity generatrix is subjected to a constraint that the generatrix has a lower slope than the deformed diaphragm under a uniform pressure load. This constraint aims to avoid cavity dead volume at the end of the gas discharge process. Thus, an analytical solution for the deflection of an edge-clamped metallic diaphragm under a uniform pressure load is firstly developed. The solution employs the principle of minimum energy and the Rayleigh-Ritz method, which based on the theory of thin plates with large deflections. Experimental measurements, as well as the finite elements method (FEM), are employed to validate the solution. The analytical results are found to be in good agreement with the results of measurements and FEM simulations. Secondly, the stress of the diaphragm with a specific deflection is calculated, and the radial stress concerning both gas side and oil side of the diaphragm is taken as the objective function. Finally, a new generatrix is obtained through the optimization. The radial stress of the diaphragm clinging to the new cavity profile is validated via the FEM simulation, and results match well with each other. It also approves that the cavity dead volume is eliminated by the new generatrix at the end of the gas discharge process. Moreover, the maximal and the centric radial stress of the working diaphragm were compared between the new generatrix and the traditional generatrix under the same design parameters, the maximal and the centric radial stress of the diaphragm decreased by 8.2% and 13.9%, respectively. Based on the proposed design method, effects of the cavity volume, cavity radius, diaphragm thickness and diaphragm material properties on the maximal radial stress of the working diaphragm are further discussed.
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影响因子：
0.3
作者：
B. Ivanov;S. E. Narkunskii;V. Pleshakov;N. I. Ul'yanov
通讯作者：
B. Ivanov;S. E. Narkunskii;V. Pleshakov;N. I. Ul'yanov
影响因子：
--
作者：
Bissanga Gabriel;J. Furu
通讯作者：
Bissanga Gabriel;J. Furu
DOI：
10.1145/2598394.2605342
发表时间：
2014-07
期刊：
Proceedings of the Companion Publication of the 2014 Annual Conference on Genetic and Evolutionary Computation
影响因子：
--
作者：
A. Engelbrecht
通讯作者：
A. Engelbrecht
影响因子：
0.3
作者：
S. M. Altukhov;A. Zhukov
通讯作者：
S. M. Altukhov;A. Zhukov
DOI：
10.1016/b978-0-12-409547-2.14581-0
发表时间：
2020
期刊：
Comprehensive Chemometrics
影响因子：
--
作者：
Federico Marini;Beata Walczak
通讯作者：
Federico Marini;Beata Walczak