共查询到19条相似文献,搜索用时 93 毫秒
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由杭州制氧机集团有限公司负责设计、制造,配淮南化工总厂抗氧液空28000m_3/h空分设备的增压透平膨胀机组,最近在用户现场完成安装调试,并一次开车成功。28000m_3/h从空分设备增压透平膨胀机组是抗氧迄今为止设计制造的膨胀气量最大、技术要求最高的低压透乎膨胀机组。在技 相似文献
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以10万m3/h空分设备为例,介绍国产中高压透平膨胀机组的性能、技术特点和应用效果,分析国产中高压透平膨胀机叶轮加工、轴向力的平衡和轴封选择等保证机组性能的关键技术的解决方案。 相似文献
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<正> 1997年12月,配椎甫化工总厂28000 ms儿空分设备的透平膨胀机组,杭氧完戍设计和技求准备工作。
该机组由杭氧集团有限公司透平压缩机厂开发设计,其技术性能和制造水平均居目前该厂同类产品榜首。 相似文献
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引进增压透平膨胀机在机组安全保护和自动控制方面较国内设计、制造的产品更完善、更先进。结合某煤化工公司58000 m3/h空分设备配套膨胀机,介绍引进膨胀机在防止烧瓦事故方面所采取的措施,防喘振控制,膨胀机冷开车和启动、停车过程中的注意事项,以及防止膨胀机发生冰堵的措施。 相似文献
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《低温学》2015
A cryogenic liquid turbine expander is developed as a replacement for traditional Joule–Thomson valves used in the cryogenic systems for the purpose of energy saving. An experimental study was conducted to evaluate the performance of the turbine expander and is the subject of this paper. The test rig comprises a closed-loop liquefied nitrogen system, cryogenic liquid turbine expander unit, and its auxiliary and measuring systems. The test operating parameters of the turbine expander are determined on the basis of flow similarity rules. Pre-cooling of the liquid nitrogen system is first performed, and then the tests are conducted at different flow rates and speed ratios. The turbine expander flow rate, inlet and outlet pressure and temperature, rotational speed and shaft torque were measured. Experimental results and their uncertainties were analyzed and discussed. The following are demonstrated: (1) For both test cases, turbine expander peak isentropic efficiency is respectively 78.8% and 68.4% obtained at 89.6% and 92% of the design flow rate. The large uncertainties in isentropic efficiency are caused by the large enthalpy variations subjected to small measurement uncertainties in temperature and pressure. (2) Total efficiency and hydraulic efficiency of the turbine expander are obtained. They are essentially the same, since both include flow-related effects and also bearing losses. Comparisons of total efficiency and hydraulic efficiency were used to justify measurement uncertainties of different quantities, since the former involves the measured mass flow rate and enthalpy drop (being dependant on inlet and outlet temperature and pressure), while the latter involves the actual shaft power, volume flow rate, and inlet and outlet pressure. (3) Losses in flow passages and the shaft-bearing system have been inferred based on the measured turbine expander total efficiency, isentropic efficiency, and mechanical efficiency, which are respectively 57.6–74.8%, 62.1–78.8% and 89.5–96.4%. Uncertainty analysis is conducted for experimental isentropic efficiency, hydraulic efficiency, and total efficiency. The hydraulic efficiency seems to be the best measure for assessing the performance of cryogenic liquid turbine expander. (4) Isentropic efficiency versus speed ratio is obtained from the experimental data. The experimental isentropic efficiency increases with the speed ratio, and it reaches 78.8% at the largest experimental speed ratio. A higher efficiency would be achieved if the speed ratio could reach a larger value. This provides some guidance for an optimal operation of the turbine expander in the future. 相似文献
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罗列了Rotoflow公司天然气透平膨胀机改造设计过程中遇到的问题,详细介绍了改造内容。改造后的膨胀机现场运行性能良好,完全可以替代同类型进口透平膨胀机。 相似文献
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介绍PLPHe-9.3/9-0.3型氦透平膨胀机结构及其特点,提出了运用精雕新工艺完成叶片的铣制加工等新工艺的开发与设计思路、实施过程和效果,为其他小型透平膨胀机的零件加工提供了一种新的工艺加工方法。 相似文献
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介绍兖矿鲁南化肥厂28000 m3/h空分设备配套的进口液氧泵、液氮泵和透平膨胀机等引进设备的设计参数,分析在运行过程中出现的液氧泵电机烧坏、液氮泵汽蚀、液氮泵迷宫损坏和透平膨胀机轴振动值波动频繁等问题,叙述了处理问题的方法和措施。 相似文献
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透平膨胀机更换新的叶轮转子部件及石墨气封后,重新启动运行时,出现了间歇性无规律异响和振动值增大的现象,且随着膨胀机转速不断提高,异响和振动值不断增大。加强监控透平膨胀机的振动值,直到故障消失,平稳运行。介绍故障发生时透平膨胀机的运行参数和整个故障过程,最后总结了此次故障分析和处理过程中得到的经验。 相似文献
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分析了KDON-250/1500型空分设备透平膨胀机发生故障的原因,介绍了故障处理的主要内容,并对引发故障的原因进行了总结和思考。 相似文献