热油泵机械密封的闪蒸开启失效及实验分析

热油泵机械密封在工况变化时出现密封开启失效。采用实验室模拟方法,分析了热油泵机械密封在工况变化时相变半径的变化使得密封相态改变对密封稳定性的影响,提出了热油泵机械密封闪蒸开启失效机理,并通过实验室实验,验证了压力和温度的变化是密封端面开启的重要因素。最后得出结论:热油泵机械密封在工况变化时会因闪蒸而开启失效,相变半径的变化是影响热油泵机械密封相态稳定性的关键。     

热油泵机械密封端面失效影响因素实验分析

根据热油泵机械密封在变工况条件下的实验室实验，分析了变工况发生时热油泵机械密封失效的端面影响因素，以及端面参数的变化规律，提出了热油泵机械密封在变工况发生时避免端面失效的建议及措施。     

变工况时气液两相机械密封端面动压实验分析

在理论分析变工况时机械密封动环密封圈摩擦力和比压的变化 ,以及端面轴向力平衡变化的基础上 ,采用 1GX70非平衡型机械密封 ,在实验室模拟变工况条件下开展了气液两相机械密封端面动压实验。实验结果表明 ,变工况时处于气液两相的机械密封 ,因端面间液膜闪蒸而导致端面开启 ,动、静环不再平行 ,动环密封圈摩擦力增大 ,动环追随性遭破坏致使密封失效 ;机械密封的动压膜压沿收敛间隙呈正弦分布 ,计算变工况密封开启力时不但要考虑密封端面闪蒸造成沸腾区压力的影响 ,还要考虑动压的影响     

双列反向螺旋槽上游泵送密封性能实验研究

利用中低速泵用密封实验装置,在变工况下,对双列反向螺旋槽上游泵送密封的性能进行了实验研究。得到了密封端面液膜压力、液膜厚度、端面温升等重要参数。分析了变工况下密封端面间液膜压力、液膜厚度随转速的变化规律,并测量了不同介质压力下密封端面的温升。实验结果表明,双列反向螺旋槽上游泵送密封在压力、转速变化的条件下能实现非接触运转,保证端面处于流体润滑状态,具有较强的抗干扰能力,完全适应变工况操作条件。     

储油罐区机泵系统机械密封失效分析

机械密封是离心泵等机泵类设备中常用的密封形式,本文通过对储油罐区特殊的工况下机械密封常见的失效情况进行理论分析,针对机械密封的更换安装、日常维护保养、常见故障解决等提出了实用建议。     

新型非接触式机械密封在丙烷泵上的应用

分析了高压脱丙烷塔回流泵接触式机械密封频繁失效的原因,介绍了针对该泵工况,借助非接触式机械密封理论研制的新型0逸出非接触式串联机械密封的应用情况.结果表明,新型非接触式机械密封在正常运行状态下可以实现丙烷类易挥发性介质的0逸出,基本消除对环境的污染,在非常工况下也可实现安全密封的功能和良好的防固体颗粒能力,该新型非接触式机械密封具有无泄漏、使用寿命长以及运行费用低等优点,在诸多轻烃、液态烃类介质泵上具有广泛的推广应用价值.     

顺丁橡胶聚合釜轴封结构的改造应用

依据顺丁橡胶装置聚合釜的生产工况和介质特性,针对之前聚合釜机械密封泄漏的原因,采用填料密封与机械密封组合使用的密封型式,对原密封结构进行改进,通过实际使用验证,在当前生产工艺条件和介质特性下,机械密封泄漏率大大降低,延长了机械密封的使用寿命,保障了装置的安全平稳运行。     

进口机械密封的国产化改造及其应用

吉林石化公司炼油厂P1102A泵为国外公司生产的双支撑式离心泵，机械密封为多弹簧串联机械密封，安全性差、价格高、供货周期长。经过国产化改型设计，机械密封最终试用满足了该工况下安全、平稳、长周期运行的要求。     

与威布尔分布统计分析结合的石油化工泵用机械密封故障的分析

笔者利用威布尔分布统计分析与故障分析相结合的方法,对胜利炼油厂泵用机械密封作了可靠性分析,得出了不同工况及结构材料条件下机械密封的威布尔指数,并与故障分析结合,找到了防止某些故障的措施和今后改进的方向。     

机械密封辅助系统中密封液的选择研究

为了选出机械密封辅助系统在实际工况条件下合适的密封液,与机械密封及泵送工艺介质有良好的兼容性,对目前四川石化所有泵设备安装的机械密封所使用的密封辅助系统种类及密封液特性进行研究,从泵输送的工艺介质的特性出发,对多种常用的密封液的物理与化学特性进行分析,总结出了密封液的应用场合与环境。为延长机械密封使用寿命,减少设备故障,提高生产效率和产品合格率提供了保障。     

Oil Refining

Current data on refinery products: LPG, mogas, naphtha, aviation fuel and Kerosene, gas/diesel oil, residual fuel oil, other and total products, and total products. Countries covered: Canada, the United States, Japan, Australia, Belgium, France, Germany, Greece, Italy, Netherlands, Spain, the United Kingdom. Average production is thousand barrels per day. Updated on a monthly basis. Current data on crude oil refinery runs. Countries covered: Canada, the United States, Japan, Australia, Belgium, France, Germany, Greece, Italy, Netherlands, Spain, the United Kingdom. Updated on a monthly basis.     

Oil Refining

Current data on refinery products: LPG, mogas, naphtha, aviation fuel and Kerosene, gas/diesel oil, residual fuel oil, other and total products, and total products. Countries covered: Canada, the United States, Japan, Australia, Belgium, France, Germany, Greece, Italy, Netherlands, Spain, the United Kingdom. Average production is thousand barrels per day. Updated on a monthly basis. Current data on crude oil refinery runs. Countries covered: Canada, the United States, Japan, Australia, Belgium, France, Germany, Greece, Italy, Netherlands, Spain, the United Kingdom. Updated on a monthly basis.     

Oil Refining

Current data on refinery products: LPG, mogas, naphtha, aviation fuel and Kerosene, gas/diesel oil, residual fuel oil, other and total products, and total products. Countries covered: Canada, the United States, Japan, Australia, Belgium, France, Germany, Greece, Italy, Netherlands, Spain, the United Kingdom. Average production is thousand barrels per day. Updated on a monthly basis. Current data on crude oil refinery runs. Countries covered: Canada, the United States, Japan, Australia, Belgium, France, Germany, Greece, Italy, Netherlands, Spain, the United Kingdom. Updated on a monthly basis.     

Oil Refining

Current data on refinery products: LPG, mogas, naphtha, aviation fuel and Kerosene, gas/diesel oil, residual fuel oil, other and total products, and total products. Countries covered: Canada, the United States, Japan, Australia, Belgium, France, Germany, Greece, Italy, Netherlands, Spain, the United Kingdom. Average production is thousand barrels per day. Updated on a monthly basis. Current data on crude oil refinery runs. Countries covered: Canada, the United States, Japan, Australia, Belgium, France, Germany, Greece, Italy, Netherlands, Spain, the United Kingdom. Updated on a monthly basis.     

Oil Refining

Current data on refinery products: LPG, mogas, naphtha, aviation fuel and Kerosene, gas/diesel oil, residual fuel oil, other and total products, and total products. Countries covered: Canada, the United States, Japan, Australia, Belgium, France, Germany, Greece, Italy, Netherlands, Spain, the United Kingdom. Average production is thousand barrels per day. Updated on a monthly basis. Current data on crude oil refinery runs. Countries covered: Canada, the United States, Japan, Australia, Belgium, France, Germany, Greece, Italy, Netherlands, Spain, the United Kingdom. Updated on a monthly basis.     

Oil Refining

Current data on refinery products: LPG, mogas, naphtha, aviation fuel and Kerosene, gas/diesel oil, residual fuel oil, other and total products, and total products. Countries covered: Canada, the United States, Japan, Australia, Belgium, France, Germany, Greece, Italy, Netherlands, Spain, the United Kingdom. Average production is thousand barrels per day. Updated on a monthly basis. Current data on crude oil refinery runs. Countries covered: Canada, the United States, Japan, Australia, Belgium, France, Germany, Greece, Italy, Netherlands, Spain, the United Kingdom. Updated on a monthly basis.     

原料性质对催化裂化装置动态响应和定常态特性的影响

应用前置挠焦罐式高效再生器催化裂化装置动态机理数学模型及其Ｗｉｎｄｏｗｓ仿真软件平台ＨＥＲＳ，在考察了新鲜原料残炭值，密度，ＡＳＴＭ馏程等单个性质对装置生产操作过程中中动态响应和定态特性的影响后，考察了原料变重（残炭值，密度和沸点均增高）对生产操作的影响，单个性质变化时，只控制催化剂藏量，产品分布变化较小，而再生部分各变量变化较大３个性质综合变化时，藏量，压力和反应温度全闭环控制，产品分布和再生部     

塔里木盆地塔中地区生物礁特征及分布

塔里木盆地塔中地区中、上奥陶统发育多种类型生物礁，主要造礁生物包括海绵、托盘类、层孔虫、珊瑚、隐藻类、苔藓虫、蓝绿藻、绿藻、管孔藻科红藻等，主要礁体类型为灰泥丘和少量的骨架礁、障积礁。分析钻探揭示的生物礁特征，结论是灰泥丘主要形成于棚内及棚缘内带环境，骨架礁与障积礁主要形成于棚内与棚缘环境。通过沉积相分析和地震反射特征研究，预测塔中地区的陆棚边缘相带和塔中北部斜坡的中部地带，有望找到带状或断续带状分布的生物礁带。塔中1号断裂西墙的顺托果勒西区块已发现6个地震异常反射体，从其发育层位、所处环境和内部反射特征来看，极可能是生物礁丘。图2表2参6     

Oil Demand and Stocks

Current data of world oil demand. This includes international bunkers and refinery fuel. Updated on a monthly basis. Current data of oil demand from counties such as Canada, the United States of America, Japan, OECD Europe, Belgium, France, Germany, Italy, Netherlands, Spain, Sweden, the United Kingdom, Australia, Mexico, Republic of Korea, and Turkey. Updated on a monthly basis. Current data for crude oil and refined product stocks in Canada, Chile, Mexico, the United States (Western Hemisphere), France, Germany, Italy, Netherlands, Spain, the United Kingdom and Other Europe (Europe), Japan, Republic of Korea, Other Pacific (Asia-Pacific), and Total OECD (Table 12.1) Current data for refined product stocks in the OECD Western Hemisphere, OECD Europe, OECD Asia-Pacific and Total OECD. Products include gasoline, diesel and gasoil, and heavy fuel oil. Updated on a monthly basis (Table 12.2).     

Oil Demand and Stocks

Current data of world oil demand. This includes international bunkers and refinery fuel. Updated on a monthly basis. Current data of oil demand from counties such as Canada, the United States of America, Japan, OECD Europe, Belgium, France, Germany, Italy, Netherlands, Spain, Sweden, the United Kingdom, Australia, Mexico, Republic of Korea, and Turkey. Updated on a monthly basis. Current data for crude oil and refined product stocks in Canada, Chile, Mexico, the United States (Western Hemisphere), France, Germany, Italy, Netherlands, Spain, the United Kingdom and Other Europe (Europe), Japan, Republic of Korea, Other Pacific (Asia-Pacific), and Total OECD (Table 12.1) Current data for refined product stocks in the OECD Western Hemisphere, OECD Europe, OECD Asia-Pacific and Total OECD. Products include gasoline, diesel and gasoil, and heavy fuel oil. Updated on a monthly basis (Table 12.2).