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往复式天然气压缩机在海洋平台上通常采用直接与平台结构焊接的方式进行安装,其振动直接传递到平台上易造成机组附近平台结构振动。本文研究在往复式天然气压缩机橇块下安装弹簧阻尼隔振器来减少平台结构振动的方法,并通过现场实测平台结构振动数据证明其减振效果良好。 相似文献
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本文阐述了管道系统振动的危害,并通过对某项目加热炉管道系统进行振动分析,利用CAESARⅡ软件对管系固有频率进行计算,提出了减振处理措施,同时对类似管系的稳定性设计给出了建议,为消除同类装置的安全隐患,确保装置的安全平稳运行提供参考。 相似文献
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针对自带电机类电子设备在调试与使用过程中,出现振动并发出噪音的现象,利用在设备内部涂覆高阻尼减振降噪涂料的工艺技术,实现了有效的减振降噪。开展了相关高阻尼减振降噪涂料涂覆层工艺试验,并对涂层的物理化学性能进行了检测,优选出了较优的高阻尼减振降噪涂料,设计出了适合于电子设备表面的减振降噪涂覆工艺技术,提升了电子设备的应用性及可靠性。 相似文献
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根据润滑脂生产中对反应釜搅拌器的减振要求,对产生振动的原因进行了分析。确定了采用在搅拌轴上安装减振装置,通过试验获得了主要技术参数,据此设计安装了减振装置。经过几个月生产运行证明,该装置减小了搅拌器的径向振动,对提高润滑脂质量、降低能耗、增加经济效益具有一定的作用。 相似文献
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乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。 相似文献
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我厂3号回转窑(Φ4m×60m)生产线在1996年年底由SP窑(产量912t/d)改为NSP窑(产量1320t/d),预分解系统为四级旋风预热器带离线式分解炉 相似文献
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Conclusions It is significant that the purification on a single passage of viscose through porous ceramic corresponds to the result of a two-stage filtration of it in industrial filter-presses with standard fillings.Kiev Combine. Kiev Technological Institute of Light Industry. Translated from Khimicheskie Volokna, No. 3, pp. 20–22, May–June, 1969. 相似文献
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The objective of the study was to explore the effect of the degree of deacetylation (DD) of the chitosan used on the degradation rate and rate constant during ultrasonic degradation. Chitin was extracted from red shrimp process waste. Four different DD chitosans were prepared from chitin by alkali deacetylation. Those chitosans were degraded by ultrasonic radiation to different molecular weights. Changes of the molecular weight were determined by light scattering, and data of molecular weight changes were used to calculate the degradation rate and rate constant. The results were as follows: The molecular weight of chitosans decreased with an increasing ultrasonication time. The curves of the molecular weight versus the ultrasonication time were broken at 1‐h treatment. The degradation rate and rate constant of sonolysis decreased with an increasing ultrasonication time. This may be because the chances of being attacked by the cavitation energy increased with an increasing molecular weight species and may be because smaller molecular weight species have shorter relaxation times and, thus, can alleviate the sonication stress easier. However, the degradation rate and rate constant of sonolysis increased with an increasing DD of the chitosan used. This may be because the flexibilitier molecules of higher DD chitosans are more susceptible to the shear force of elongation flow generated by the cavitation field or due to the bond energy difference of acetamido and β‐1,4‐glucoside linkage or hydrogen bonds. Breakage of the β‐1,4‐glucoside linkage will result in lower molecular weight and an increasing reaction rate and rate constant. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3526–3531, 2003 相似文献
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A refined nonlinear value of the main parameter of a material, i.e., the elongation modulus versus the instant temperature value, was suggested for introduction into the computational algorithm of tempering stresses. 相似文献