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1)  aeration-cooling
通汽冷却
1.
According to the question of using natural cooling will prolong the period of opening cylinder for overhaul,we expound three modes for the steam turbine quickly cooled after being stopped,these are vacuum and aeration-cooling,pressure--air cooling and steam cooling,then analysis and contrast them.
针对汽轮机采用自然冷却方式会延长机组检修开缸时间的问题,提出了汽轮机停机后的三种快速冷却方式抽真空通汽冷却法、压缩空气强迫冷却法和蒸汽冷却法,并对这三种方式进行了比较和分析。
2)  steam-cooling
汽化冷却
1.
The article introduces steam-cooling technology application of heating furnace.
介绍了加热炉汽化冷却技术及其应用。
2.
Introducing the necessary of medium-plate-rolling -plant heating-furnace remaking from water-cooling to steam-cooling and obvious economy benefit.
介绍了中板厂加热炉由水冷却改造为汽化冷却的必要性和明显的经济效益。
3)  evaporative cooling
汽化冷却
1.
Analysis of failure causes of evaporative cooling of heating furnace and its preventive measures;
加热炉汽化冷却失效原因分析及改进措施
2.
The failure cause was analyzed which is evaporative cooling failure.
介绍了华菱集团涟源钢铁公司型材厂蓄热式加热炉的事故现象,分析了事故发生的原因是汽化冷却循环不正常。
3.
Based onthe summary ofthe skids andposts arrangement in the reheating furnace,the paper introduces the principle andcomponents of evaporative cooling system with forced recirculation and its' advantage,and give an example of successful reference for this cooling system and achieved result.
简要介绍了步进梁式加热炉炉内水梁结构布置,在此基础上论述了步进梁式加热炉强制循环汽化冷却系统的基本原理及其组成,并给出了强制循环汽化冷却在某钢厂的成功应用范例及其应用效果。
4)  vaporization cooling
汽化冷却
1.
The main characteristics and running effect of the vaporization cooling circulating system are described in detail.
介绍了安庆铜矿8m2竖炉球团工程中竖炉主要设计参数、工艺流程,重点介绍了汽化冷却循环系统的主要工艺技术特点和运行效果。
2.
1 rolling mill of our company,the steam of heating furnace vaporization cooling system never be used before we recovery and make use of it in 1996, and got good effect.
太钢一轧厂加热炉汽化冷却所产生的蒸汽长年放散,1996年对此蒸汽进行回收利用,取得良好效果。
3.
From the viewpoint of energy effective utilization,water consumption, safety and economy, comparison and analysis of vaporization cooling and circulated water cooling for industrial furnace have been made.
从能量利用、耗水量、安全性与经济性等多个方面对工业炉炉体冷却方式(汽化冷却与循环冷却)进行了分析与比较,指出汽化冷却比水冷却更加节能降耗。
5)  evaporated cooling
汽化冷却
1.
The evaporated cooling system with soft water closed loop system was switched over successfully in the normal production condition of the BF.
并在高炉正常生产状态下 ,成功实施了汽化冷却与软水密闭循环系统的安全切换。
2.
How to successfully put an evaporated cooling system of a converter flue in operation and establish the relative stable operation were important contents when blowing in of a converter.
如何使转炉汽化冷却系统顺利投产,建立一个相对稳定的工况,是转炉开炉时的一个重要内容,介绍了马钢一炼钢95t转炉汽化冷却系统首次开炉工艺。
3.
In eliminating the weakness of evaporated cooling self-control system for 25 t Converter,the system has been reconstructedwhich offers correct information and reliable control.
针对济钢 2 5Τ转炉汽化冷却自控系统存在的薄弱环节 ,利用新技术全面改造完善 ,为生产提供准确的信息和可靠的控制 ,确保了设备的正常运行。
6)  Hi-Vap cooling
汽雾冷却
1.
Prediction of BP network for temperature of BOF shell with Hi-Vap cooling;
汽雾冷却时炉壳温度的BP网络预报
2.
By means of Hi-Vap cooling technology, the temperature of BOF shell could be controlled.
转炉炉衬采用镁碳砖后,炉壳温度大幅度上升,导致炉壳产生蠕变,利用汽雾冷却技术可对炉壳温度实施控制。
补充资料:汽轮机首次通汽起动


汽轮机首次通汽起动
initial start-up of steam turbine

  q一lunlJ shoue一tongql q.dong汽轮机首次通汽起动(initial start一up ofsteam turbine)汽轮机组安装结束后,第一次用锅炉蒸汽冲动转子使汽轮机从静止状态进人到运行状态,以对机组安装质量和制造水平进行一次整体考核。汽轮机首次通汽起动的方式有滑参数起动和额定参数起动两种,此外尚有用起动锅炉的临时汽源起动和借用其他锅炉或其他汽轮机的抽汽起动两种临时措施,其特点是蒸汽参数低、蒸汽流量小。对超高压以上的大机组额定参数起动只用于机组热状态起动。首次起动用滑参数起动最为普遍。不论采用何种起动方式,汽轮机首次起动都要在冲转后经过低速暖机、中速暖机阶段,再越过转子临界转速到达额定转速,然后带负荷试运行。 冲转前准备工作汽轮机用燕汽冲动转子前,其辅助系统必须全部投入运转,诸如:①投人汽轮机油系统,起动润滑油泵及顶轴油泵,投用盘车装!,转子低速转动,倾听各转动部分声音。运行一段时间后调用高压油泵,汽轮机调节系统赶空气,以防因系统内积聚空气导致调节汽门晃动或油管振动。②透平发电机水冷系统打循环及通水,氢冷机组进行制氢和投氢。③投汽器通循环水,然后起用抽气器抽真空,至真空值小于26.6 kPa。④凝结水、给水系统进行凝结水系统小循环和直流锅炉的给水系统大循环。小循环是先向凝汽器注人补给水,至一定水位后,再起动凝结水泵使水流经低压加热器打至除氧器后回人凝汽器。大循环是除氧器出水经给水泵送至锅炉起动分离器后再回人凝汽器。由于直流锅炉对给水水质要求较高,省煤器前的给水含铁量不得大于100拌g/L,故要建立给水系统大循环进行系统的冷态清洗。锅筒锅炉则不要求建立大循环,而用给水泵将较高温度的给水直接送至锅炉。⑤暖管、暖箱。锅炉点火后,汽轮机与锅炉同时暖管。汽缸夹层加热及法兰螺栓加热装置要进行暖箱,以便起动时随时投用,减少各部件金属温差,防止汽缸、法兰发生热变形。轴封联箱暖箱后向轴封送汽。 冲转至低速暖机冲转是用蒸汽冲动汽轮机转子使之转动。冲转方式有二:一种是主汽门开足,用调节汽门冲转;另一种是调节汽门开足,用主汽门或旁路门冲转。低速暖机是用维持汽轮机转子低速转动的蒸汽热量使汽轮机各金属部件达到均匀加热。为使汽轮机顺利地冲转和起动,必须选用适当的参数,以中国制造的300 MW汽轮机为例,就采用低压微过热蒸汽起动、汽压1~1.5 MPa.汽温250~30oC,再热蒸汽温度)200℃。这样可减少汽轮机部件金属与蒸汽的温差,有利于热应力的控制。凝汽器真空保持在55一65kPa。
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