共查询到20条相似文献,搜索用时 78 毫秒
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通过安全阀排放反力的计算公式,分析了安全阀排放反力的组成,得出波动载荷是排放反力的重要影响因素.针对安全阀长距离排放尾管,引入水锤理论,推导出管道波动载荷自平衡的条件,计算不同介质可以不考虑波动载荷的最大尾管长度,并依据此原则,给出安全阀后管道限位支架设计规则. 相似文献
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液化石油气作为易挥发介质,在常温下的饱和蒸汽压可以达到1.36 MPa,因此液化石油气在常温下需要储存在压力容器中。为了保证其储存的安全性和流程设计的合理性,结合克石化球罐区设计的具体项目,对液化气球罐在工艺设计中涉及到的重点内容作以详细归纳,例如球罐二次脱水工艺的设计、事故状态下的水顶烃工艺和罐区布置。此外,为保证球罐在事故状态下能够安全泄放,罐顶安全阀的设置尤为重要,将理论计算与实际设计参数相结合,对1 000 m3和2 000 m3球罐安全阀的的选取进行了详细计算说明,将对液化气球罐的设计具有指导作用。 相似文献
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安全是受压设备或管路上作为超压保护的装置,当系统压力长高到超过允许值时间,阀门开启,全量排放泄压,以防止压力继续升高,当压力降低到到规定值时,阀门及时关闭,从而保护系统的安全运行。所以安全阀的选型及计算是否正确直接关系到设备及至人身的安全。 相似文献
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杨扬 《中国洗涤用品工业》2022,(3):86-91
文章对日用化工行业常用保护措施安全阀的工艺计算及选型进行了详细介绍.并结合工程项目实例,通过对不同工况进行分析和计算,确定安全阀设计参数、泄放量、泄放面积以及喉径,并在此基础上进行了安全阀选型.经建设单位工程实际运行情况的反馈,所选型的安全阀符合安全生产要求. 相似文献
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A.M. Birk 《Chemical Engineering Communications》1989,80(1):173-191
Tests were performed with a 0.6 m diameter, 1.8 m long cylindrical vessel exposed to an engulfing JP4 fueled pool fire (2.5 m diameter pool) and a propane fueled simulated relief valve flare which emanated from the tank top-centre. The tank was partially filled with water and was instrumented with thermocouples and heat flux transducers. Thermocouples were also externally situated to measure fire temperatures, The tests were conducted indoors and were therefore isolated from cross winds.
Tests were conducted involving only the burning relief valve flare and with both the burning flare and pool fire. Data recorded during the tests included vessel wall temperatures, heat fluxes to the vessel, lading temperatures, and fire temperatures.
Results from the tests indicate that in the absence of cross wind effects, the burning relief valve flare had no significant effect on the vessel when it was already engulfed in fire. The very sooty fire acted as a shield between the flare and the vessel. However, the high momentum flare resulted in a significant change in the geometry of the burning pool fire and this in turn could affect the heat flux to remote targets
Results are presented which show the response of the vessel and its lading to the different fire conditions. Comparisons are made between the results obtained here and those obtained from previously conducted tests involving full and fifth scale rail tank-cars exposed to engulfing fires 相似文献
Tests were conducted involving only the burning relief valve flare and with both the burning flare and pool fire. Data recorded during the tests included vessel wall temperatures, heat fluxes to the vessel, lading temperatures, and fire temperatures.
Results from the tests indicate that in the absence of cross wind effects, the burning relief valve flare had no significant effect on the vessel when it was already engulfed in fire. The very sooty fire acted as a shield between the flare and the vessel. However, the high momentum flare resulted in a significant change in the geometry of the burning pool fire and this in turn could affect the heat flux to remote targets
Results are presented which show the response of the vessel and its lading to the different fire conditions. Comparisons are made between the results obtained here and those obtained from previously conducted tests involving full and fifth scale rail tank-cars exposed to engulfing fires 相似文献
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反应式挤出机的设计及应用 总被引:21,自引:4,他引:17
介绍了自设计的反应式挤出机的组成和技术特点,将其用于聚乙烯接枝马来酸酐的生产上效果良好。实验表明,它不但能够提高接枝效率,而且能将绝大部分的游离态马来酸酐分离法,可得到无色,无味,无气泡,表面光滑、纯净的PE-g-MAH产品。 相似文献
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介绍了欧美日为代表的发达国家燃油排放法规体系,并阐述了这三大排放法规体系各自产生的背景、演变历程及发展趋势,介绍了中国及其他国家排放控制技术的发展阶段,论述了国内外控制汽车排放污染的管理体系,提出了建议。 相似文献
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基于电感探针的在线腐蚀监测技术实现煤基合成氨装置设备和管道的腐蚀数据在企业局域网上的浏览功能,系统操作方便,界面功能较强。腐蚀在线监测数据能够及时反映设备腐蚀趋势,与现场超声波测厚监测结果基本吻合,对工艺装置设备选材和工艺防腐评价有一定的参考意义。 相似文献
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介绍化肥装置中一种单吸式安全阀的作用、功能和密封结构,分析其工作中产生泄漏的原因,并对单吸阀的结构进行改进. 相似文献
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介绍了导向浮阀塔板的结构特点、实验研究和工业应用情况。由于导向浮阀塔板上的液面梯度较小,液体返混较小,并可消除塔板上的液体滞止区,因而具有优秀的操作性能。导向浮阀塔板已在近百个塔内工业应用,均获得显著的经济效益。 相似文献
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研究了泡沫塑料的开、闭孔体积百分率的测定方法、研制出一套结构简单、操作方便、测试准确的测定泡沫塑料开、闭体体积百分率的测定装置。 相似文献