By adoptiong the methods of joining the pull rod of the return cylinder and the ultra-low temperature cooling by the liquid nitrogen,the guide shell and the press shell of the hydraulic press have been successfully changed.
采用接长回程缸拉杆、液氮超低温冷却等方法成功地更换了水压机导套及压套。
Research of Casing Pressure changes in factors in Engineers Killing;
工程师法压井套压变化的影响因素研究
Based on the production data of Panhe CBM development testing area,a comprehensive study in-cluding gas output,water output,casing pressure and dynamic water level was carried out by the method of statistic and antitheses.
以煤层气开发潘河试验区生产资料为依托,利用统计、对比的方法,对试验区排采过程中的产气量、产水量、套压和动液面等参数进行综合研究。
Conclusion is made that when alu-lined structure is used,tight vertical press-fit with the bearing can be guaranteed through cold extruding forma.
为了提高低硬度高弹性胶辊的综合使用性能,满足重定量、大牵伸的工艺要求,从胶管胶料配方的优选到采用合理的加工工艺、使用先进的检测仪器等几个方面进行了分析,以提高综合填料的分散度、胶辊表面的粗糙度并延长胶辊使用寿命;说明在选用铝衬管胶管结构时,采用进口冷喂料挤出机挤出成型及进口高精度切割机切割,加之正确定制轴承、合理使用夹具,可以保证铝衬管胶管与轴承垂直压套,防止机械波的产生,提高棉纱条干水平。
PI+ILQ control for hydraulic looper in CSP of Lianyuan Iron & Steel Co Ltd;
涟钢CSP液压活套的PI+ILQ控制
Aimed at improving the response of hydraulic looper in hot strip mills, three different control block diagrams and transfer functions corresponding to three different work ways of hydraulic looper were established.
针对带钢热连轧过程中液压活套系统伺服控制的快速响应问题,分别建立了液压活套伺服控制系统在压力控制、速度控制和位置控制三种不同工作方式下的系统结构图,并给出了它们的传递函数,提出了基于内模补偿的方法,即对第一种工作方式的4个环节或根据负载的变化分别采用不同的补偿措施进行补偿,对后两种工作方式采用自适应前馈因子的方法进行补偿。
A certain nonlinear approach controller is introduced to meet the requirement of a special control in the process when a hydraulic looper is approaching strip steel.
基于液压活套在趋近带钢阶段的特殊控制要求,介绍一种非线性趋近控制器,分别就其数学模型、动态特性进行了描述和分析,并介绍了其硬件、软件的实现过程。
The most important problems are frequent seizing in fishing pressureout set,poor packer setting effect,and low pipe string sealing,resulting in high rework rate.
其中现场出现的最主要问题是生产过程中打捞憋压套发生卡阻几率高,以及封隔器坐封效果不好,管柱密封率低,造成高作业返工率。
Preparing Al-Pb alloy by mechanical milling and canning extrusion;
机械球磨与包套挤压制备Al-Pb合金
Analysis and improvement of LV bushing overheat in a heavy-current transformer
大电流变压器低压套管过热分析及其防范措施
Discussion on Earthing Modes of High Voltage Bushing End Shield in Power Transformer
电力变压器高压套管末屏接地方式问题探讨
Reason Analysis of HV Bushing Explosion of a 220kV Transformer
某220kV变压器高压套管爆炸故障原因分析
bearing cup inserter set
轴承杯全套压入工具
A groove made by such a hammer.
用套柄铁锤压成的槽
floating in casing
下部装回压阀的套管柱
hydraulic wirerope inserting and looping machine
液压钢丝绳插套联合机
reaming and pushing machine for piston connecting rod bush
活塞连杆衬套铰压机
jacketed-pipe high-pressure steam preheater
高压蒸汽套管预热器
circulating differential fill shoe
循环压差式灌浆套管鞋
bradenhead squeeze pressure
关闭井口套管闸门形成的挤压压力
elephant transformer
无套管式高压屋内变压器
Allows for individual calibration of gradient pressure at each and every sleeve section.
使用者可自行调校各个压力套的压力。
" Terminals for transformers,high-voltage apparatus and bushings"
GB/T5273-1985变压器、高压电器和套管的接线端子
Electric Field Calculation and Geometry Optimization of Transformer Bushing End Shielding
变压器套管尾部电场计算及均压球的优化
A new explanation on the mechanism of substantial increase of casing pressure during fracturing of naturally fractured reservoir
天然裂缝储层压裂时套压大幅度增加的新解释
Failure Analysis of Thermowell at Decompressor Outlet
常减压装置减压炉出口热电偶套管失效分析
She feels boxed in living in that small flat.
他住在那套小房间里感到局促压抑。
