解决清水泵轴向漏油问题的探讨

清水泵在我们氯碱行业中是一种应用广泛的输液设备,但是其轴密封漏油问题也是企业长期难以应付的头疼事。目前新型IS型水泵,也没彻底解决此问题。水泵轴密封漏油给生产和管理带来的主要影响是:1.轴油箱润滑油沿轴向泄漏,造成油位下降,若不及时补油,会使轴承发热、损坏轴承;2.轴油箱润滑油泄漏。     

油浸式隔离变压器瓷套管漏油处理方法

隔离变压器是天然气压气站压缩机重要的部件之一。在实际生产过程中,经常由于各类原因发生某些故障而没有固有处理方法能够作为可靠的技术指导。以某天然气压气站压缩机隔离变压器低压侧出线套管渗油故障为例,探究了现场具有可操作性的实际检修步骤,形成一定经验方法,可供站场解决类似问题时借鉴。     

小型无人机用整体油箱的研制

介绍小型无人机整体油箱的研制。以小型无人机机体结构作为油箱舱体,内壁涂覆聚氨酯弹性体防渗漏涂层,从而形成整体油箱。此整体油箱已经在两种无人机上得到应用,其特点是重量代价低,死油少,有效载油量大。使用可靠性高。     

泵在炼油厂运行中的故障及对策

讨论了泵在炼油厂油站使用中的问题及处理方法,泵在切换中的注意事项;热油泵预热线泄漏问题如何避免;泵在小流量运行时的问题及处理方法。对如何防止泵的出口管线泄漏,催化气压机级间凝缩油输送中容易发生的问题及解决方法进行了探讨。     

2#汽轮机EH油压突降、油质恶化故障分析及处置

针对中天合创能源有限责任公司化工分公司2#汽轮机开机过程中出现的EH油压突降、油质恶化故障,从机组挂闸原理出发,查找出故障原因是由于仪表人员误将挂闸信号强制为已挂闸,使大量高压油返回EH油站,EH油泵超流量运行,导致母管压力下降,EH油箱底部沉积脏物被卷入系统。在正确完成静态试验后,可采取在线滤油和大修时清理油箱底部的处理方法,从源头杜绝EH油油质污染,确保机组长周期运行。     

风机箱式轴承座的治漏

介绍了一种较简单的防止风机箱式轴承座轴端漏油的方法,即增加挡油圈、甩油圈、油标尺,改进填料材质,改造轴承压盖,改进回油方式等,改造后从根本上解决了设备的泄漏油问题.     

空压机组油系统进水原因分析及改造

分析空压机组油箱进水原因。介绍合成氨厂空压机透平的密封型式及密封原理．分析迷宫密封的泄漏原因。并对解决方法进行探讨。     

M701F燃机#2轴承室向进气室渗油处理

本文对M701F机组#2轴承室向进气室渗油现象进行分析,找出渗油的原因,经过系统该井及系统调整,解决了问题。     

新型REXA执行器在风机静叶调节系统中的应用

针对大庆石化催化裂化主轴流风机原电液伺服静叶调节系统存在的动力油系统泄漏严重、伺服马达拒动、伺服阀卡涩及静叶漂移等问题,对该系统进行了升级改造。将原电液执行器更换为REXA电液执行器,增加REXA控制单元。系统改造后,缩短了液压油管路,原系统的伺服阀卡涩、静叶漂移及渗油漏油等问题得到很好的解决。结果表明,REXA执行器具有响应速度快、定位精度高、抗干扰能力强等优点,同时节约了人工成本。     

液氨充装球阀泄漏原因分析及处理对策

液氨充装站球阀经常性泄漏,导致液氨不能及时充装造成产品积压。就泄漏故障进行原因分析,提出解决对策并实施,有效解决了泄漏故障。     

Fuel cells for civil aircraft application: On-board production of power, water and inert gas

Fuel cell systems are regarded as a promising solution for future electrical energy generation on board of commercial aircraft. In addition to an improved efficiency such systems offer the opportunity of producing water usable for on-board purposes and provide additional functions such as inerting (providing a non-inflammable atmosphere) of the jet fuel tank. This paper presents an evaluation and assessment of different system architectures as well as experimental results demonstrating the feasibility of the multiple functions in a laboratory set-up. First, the conventional system requirements and the results reported by the Federal Aviation Administration (FAA) are discussed. A system design evaluation based on simulating cruise and ground operation of aircraft is performed demonstrating the benefits of systems with pressurized hydrogen tank storage and cabin air use. The requirements for a fuel cell system regarding aircraft inerting function are calculated based on the FAA analysis. Experimental results based on laboratory systems confirm the feasibility of the implementation of various functions with a single fuel cell system. Test platforms for further investigation of the systems are shortly described.     

多层共挤汽车塑料油箱的生产及粘合强度的探讨

通过对粘合剂的选择、加工工艺、设备、油箱结构等方面分析了影响多层共挤油箱粘合强度的诸多因素。着重介绍了汽车多层共挤油箱在燃油浸泡及外界恶劣气候条件下粘合强度的老化性能．并由此设计了一种方法来有效检测其粘合强度随燃油浸泡而逐渐降低的变化情况。同时，强调了多层共挤油箱在使用过程中仍能保持高粘结强度的重要性。     

06Cr19Ni1O与Q235B的焊接工艺

承接了某公司PVC装置上的5台气体密封罐制造.其中罐顶材料为06Cr19Ni10,罐体加强箍为Q235B,两者相焊.第一台气体密封罐在焊接时出现了裂纹.后来调整了焊接工艺,顺利完成了其余4台设备的焊接,质量完全符合要求.     

机械镀锌在工程机械燃油箱内壁防腐上的应用

主要介绍了机械镀锌工艺在工程机械燃油箱上的应用,机械镀锌工艺与其他几种镀锌方法在工程机械燃油箱上的应用的比较优势和在应用实践中的实施方法。     

DYNAMIC BEHAVIOR OF FLUID FLOW THROUGH A VERTICAL TUBE INTO A SEALED TANK FILLED WITH GAS

This paper describes a model of the unsteady filling process that occurs when liquid entraps air in sealed lank vented by a vertical round tube. A mathematical model is developed to predict the pressure fluctuation of the closed tank and the rate of transfer of liquid into the tank. A drift-flux model is used to describe the two-phase effects in the tube with particular attention being focused on the boundary condition at the bottom of the tube. The experimental setup consists of flow of water from a constant head reservoir into a sealed tank through a single vertical tube. The pressure in the sealed tank is measured using a pressure transducer. Experiments are run with tubes of varying diameter and lengths. The agreement of the theoretical model with the experimentally measured pressure fluctuation is quite good.     

DYNAMIC BEHAVIOR OF FLUID FLOW THROUGH A VERTICAL TUBE INTO A SEALED TANK FILLED WITH GAS

This paper describes a model of the unsteady filling process that occurs when liquid entraps air in sealed lank vented by a vertical round tube. A mathematical model is developed to predict the pressure fluctuation of the closed tank and the rate of transfer of liquid into the tank. A drift-flux model is used to describe the two-phase effects in the tube with particular attention being focused on the boundary condition at the bottom of the tube. The experimental setup consists of flow of water from a constant head reservoir into a sealed tank through a single vertical tube. The pressure in the sealed tank is measured using a pressure transducer. Experiments are run with tubes of varying diameter and lengths. The agreement of the theoretical model with the experimentally measured pressure fluctuation is quite good.     

空间站结构材料及设计研究

简要介绍了空间站构型的演变和发展过程，说明了各种不同结构的优缺点，并对桁架、密封舱等结构及其材料进行了详细地论述，具体包括结构及结构材料的设计要求、材料的选择、加工制造工艺等方面。     

油罐车残存油中元素硫的半定量快速测定方法

油罐车是否污染喷气燃料,使喷气燃料的银片腐蚀不合格,主要是由油罐车内壁残留的元素S含量所决定。研究发现,罐车内壁锈粉与罐底残存油中元素S含量呈一定的相关性。本文采用汞滴法,利用汞滴在不同含量的元素S中变色时间不同这一性质,快速测定残存油中的元素S含量范围,从而可知罐车内壁是否吸附有过高的元素S,为准确判断油罐车是否污染喷气燃料提供重要的依据。     

萃取槽搅拌桨运行状况分析

简述该公司近几年来萃取槽（１２００／３９００×４５５０ｍｍ）搅拌桨的运行状况,分析搅拌轴和桨叶脱落、断裂以及槽底防腐层损坏等故障的原因,并提出相应地解决办法和防范措施。