1) under-balanced valve
负压阀
1.
As a new isolated under-balanced perforating technology, the structure of TCP string is redesigned, isolated sub and under-balanced valve are used.
该技术通过对施工管柱的整体设计和隔离短节、负压阀等关键结构的研制,解决了靠气举掏空套管内压井液或用泵车(人工)向油管内灌注压井液实现负压的方法。
2) Negative pressure
负压
1.
Analysis of increasing velocity of oil-water separation by induction of negative pressure;
负压诱导油水加速分离过程分析
2.
The effect of negative pressure on the quality of compact-spun yarns;
负压对紧密纺成纱质量的影响
3.
The development and application of the closed negative pressure oil well pump;
封闭式负压抽油泵的研制与应用
3) vacuum
负压
1.
Relations between Rotor Vacuum and Yarn Quality\= on RU11 Rotor Spinning Frame;
RU11型转杯纺纱机转杯负压与成纱质量的关系
2.
Observation of the wound healing with vacuum sealing technique and the extract of Arnebia euchroma Tohnst;
敷料负压技术结合紫草油纱布在皮肤感染创面中应用的研究
3.
A preliminary report of effect of vacuum－ sealing technique on the treatment of chronic wounds;
负压封闭治疗慢性创面的初步报告
4) underpressure
负压
1.
Study on trauma of tympanic membrane and ossicular chain of guinea pigs exposed to experimental blast underpressure;
冲击波负压暴露对豚鼠鼓膜和听骨链的损伤效应
2.
Scanning and transmission electron microscopic observation of cochlear hair cell injuries of guinea pig exposed to blast underpressure;
豚鼠冲击波负压暴露后耳蜗毛细胞扫描电镜和透射电镜观察
3.
Because the wells put into production in Cretaceous upper reservoir formation in Hongnan block 9 never produced sand,researchers studied the sand reason of the well from perforation,underpressure and gas lifting.
考虑到红南9块白垩系上油组历史投产的井均未有过出砂史,因此,从射孔、负压和气举三方面分析了造成该井出砂的原因,为将来红南9块防止新投出砂提供了理论依据。
5) negative-pressure
负压
1.
The stationary flexible chute system for concrete-conveying is more convenient than the common chute because of its flexible,adjustable and negative-pressure damping behaviours,the end of this flexible chute is uneasily blocked up,and the aggregate of conveyed concrete is quite few separated;good application prospect of this chute system is expected.
固定式软管溜筒系统由于具有柔软可伸缩性和负压阻尼的特点,与普通的钢管溜管系统相比,具有不堵管、终端骨料分离较小的特点,是一种具有应用前景的新型混凝土运输手段。
6) suction
负压
1.
In order to find out the pull out bearing capacity of bucket foundation in soils of offshore area,the study on pull out bearcaning capacity of bucket foundation is made by using models with different depth,and the mechanism of pull out bearing capacity is analyzed considering the effect of suction on pull .
为了了解桶形基础在这一地区的抗拔承载力情况 ,对不同桶深的桶形基础进行抗拔承载力试验 ,分析桶形基础抗拔承载力的作用机理 ,同时 ,考虑了负压对抗拔承载力的影响 ,为桶形基础在这一地区的使用提供了一定的参
2.
The structure of bucket foundation in the initial installation stage was investigated, suction with different length and water depth were analyzed in detail and the foundation was modeled as a cylindrical thin shell with fixed free boundary condition.
分析了不同长度及水深时结构所受的负压,将结构简化成一端固定、一端自由边界条件的圆柱薄壳。
3.
It is important for the suction penetration of bucket foundation platforms to have a field test at sea.
论述了桶形基础平台原型单桶模型在海上现场负压沉贯的方案、方法和过程 ,得出了试验结论 ,并将试验成果成功应用于CB2 0 B采油工艺平台的海上沉贯安装 ,对浅水区桶形基础平台的现场施工具有指导意义。
参考词条
补充资料：溢流阀、顺序阀、减压阀的比较
溢流阀 | 减压阀 | 顺序阀 | ||
控制油路的特点 | 通过调整弹簧的压力控制进油路的压力，保证进口压力恒定，p2＝0 | 通过调整弹簧的压力控制出油口的压力，保证出口压力p2稳定 | 直控式－通过调定调压弹簧的压力控制进油路压力；夜控式－由单独油路控制压力 | |
出油口情况 | 出油口与油箱相连 | 出油口与减压回路相连 | 出油口与工作回路相连 | |
泄漏形式 | 内泄式 | 外泄式 | 内泄式 | |
进油口状态及压力值 | 常态 | 常闭（原始状态） | 常开（原始状态） | 常闭（原始状态） |
工作状态 | 进出油口相通，进油口压力为调整压力 | 进油口压力低于出油口压力，出油口压力稳定在调定值上 | 进出油口相通，进油口压力允许继续升高 | |
联接方式 | 并联 | 串联 | 实现顺序动作式串联作卸荷阀用时并联 | |
功用 | 定压、溢流或安全作用限压、稳压、保压 | 减压、稳压 | 不控制系统的压力，只利用系统的压力变化控制油路的通断 | |
进油腔压力p1控制阀芯移动 | 出油腔压力p2控制阀芯移动 | 进油腔压力p1控制阀芯移动 | ||
说明：补充资料仅用于学习参考，请勿用于其它任何用途。