共查询到20条相似文献,搜索用时 93 毫秒
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文章主要介绍了洛阳金达石化有限责任公司特种油品厂的核心设备加氢进料往复泵填料箱的基本结构,从运行工况、安装方法、填料材质以及柱塞材质的选取等方面分析了填料泄漏的原因,并逐一提出改进措施,使加氢进料泵的运行周期得到大幅度的提高。 相似文献
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目前针对抽油机杆管偏磨、系统效率低、产业能力差、能耗高及维护费用高等问题,开展了往复式潜油电泵配套采油技术研究和应用。但在往复泵实际生产中,还存在许多问题及井下故障,本文将针对这些问题进行分析研讨,并制定治理措施。 相似文献
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往复泵的技术特点及应用现状 总被引:1,自引:0,他引:1
在现有流体输送方式众多的背景下,往复泵以其独特的压力输送技术在诸多领域取得了成功的应用。本文结合工况实际,凝练总结了往复泵的流体输送技术特点和应用现状,分析该设备的优缺点并对下一步的改进方向做出展望,对该设备的系统化学习和深入性研究具有指导和借鉴意义。 相似文献
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介绍了单螺杆挤出过程的计算机仿真系统。通过建立单螺杆挤出过程的数学模型、各种物料的物性数据库及螺杆参数数据库,使用可视化程序设计语言VisualC十十、数据库开发语言SQLsever等;开发了完全基于Windows的单螺杆挤出过程仿真系统。本系统能近似模拟挤出工艺的过程,并预测加工条件的变化对产品性能的影响。 相似文献
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在乳液共聚合动力学研究的基础上,考虑到自由基解吸、体积效应、凝胶效应和玻璃化效应等因素,建立了甲基丙烯酸甲酯-苯乙烯乳液共聚合聚合反应完成阶段的数学模型,并进行了计算机模拟,利用该数学模型预计了聚合反应速率、自由基在乳胶粒间的分布及平均自由基数,并将模型预计结果与实验数据进行了比较和讨论 相似文献
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Metallic ball seat valves are an essential component of many hydraulic systems. They are used for many different purposes such as pressure relief valves or check valves. Despite their universal usage, their sealing mechanism is not yet fully understood. In previous works, a successful method for the simulation of the fluid leakage of metallic ball seat valves has been developed and confirmed experimentally. The method is based on Persson's contact mechanics theory, which is based on surface roughness power spectrum C(q). This theory takes a wide range of roughness values at different length scales into account. The previous method has been restricted to isotropic surfaces, but most surfaces of practical interest are highly anisotropic. A method for the calculation of pressure flow factors using Persson's method is presented. Based on these, a model for the leakage calculation can be developed. The simulation results are validated using an experiment. 相似文献
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The optimal design of reactive separations is impossible without reliable process models. Especially for the dynamic simulation and the model‐based control of complex reactive absorption processes the model development leads to a contradiction between the required model accuracy to reflect the process complexity and the feasibility of process simulations regarding the computation time. In this respect, we have developed a new rigorous dynamic two‐phase model based on the two‐film theory as a first step, which takes into account the influence of chemical reactions and additional driving forces in electrolyte systems on mass transfer considering thermodynamic nonidealities as well as the impact of column internals on the process hydrodynamics. For a model optimization, we have performed an analysis of different model approaches for complicated industrial absorption processes and determined an appropriate model complexity. Based on results of sensitivity studies, we have accomplished different model modifications leading to a stabilization of the numerical solution without affecting the good agreement between simulation results and the experimental data. This time‐optimized model can be considered superior as compared to previous approaches and facilitates for the first time a rigorous dynamic simulation of entire reactive absorption columns and the application within an on‐line process control system. 相似文献
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旋转列管式干燥机内干燥过程的计算机模拟 总被引:2,自引:0,他引:2
以颗粒热传递模型为基础 ,运用面向对象的程序设计思想 ,结合微软基础类库 (MFC) ,在Win dowsNT环境下 ,开发了初步的旋转列管式干燥机的计算机模拟软件。实例证明 ,该模拟软件是方便、有效和可靠的 相似文献
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反应精馏过程的数学模拟是反应精馏塔设计、放大、控制的基础。对反应精馏过程模拟模型、求解方法以及优化的研究进展进行了综述。 相似文献