查询词典 turbine-engined

This paper then compares three kinds of power conversion circuit applied in it and advances a main circuit which is based on IGBT's power grade nowadays and is applied in high power direct-driven grid-connected wind turbine. It is made up of a six-phase rectifier, two paralleled BOOST chopper circuits and two paralleled SPWM inverters.

文章在比较此种风力发电机的三种类型变流电路拓扑结构的基础上，提出了一种在考虑现有开关器件功率水平的情况下符合大功率直驱并网型风力发电机要求的变流电路拓扑结构，即采用&六相不控整流+两个并联的升压斩波+两个并联的三相SPWM逆变&的电路结构，并对其各部分电路的工作原理进行了分析。

The vibration characteristics of an oxygen-turbopump rotor with a cantilever turbine disk of rocket engine have been studied on a rotating test rig.

在旋转试验器上研究了带悬臂涡轮盘火箭发动机氧涡轮泵转子的振动特性，并在此基础上完成了氧涡轮泵转子的高速动平衡试验。

The damage analysis of cracked turbine disk in the rocket engine is described. From a series of analyses, the causes of failure were reasoned through calculation and experiments, fatigue analyses which include stimulating vibration test and fatigue strength calculation were emphasized.

针对某火箭发动机涡轮盘在热试车中出现的裂纹故障，进行全面的分析，准确定位故障类型，以试验和计算分析给出合理的故障原因，重点是在疲劳分析方面所做的工作，包括振动模拟试验、疲劳强度计算，并根据疲劳强度分析结果提出改进方案。

The process of vapor pressure reducing was achieved through decompression valve and throttling disk. Centrifugal nozzles were installed along the circumference to makewater sprayed more uniform and atomization effect better. The atomization could be optimized and heat transfer between water and vapor was intensified in Ventri. The airproofed-baffle and the holes at the outlet of mixed-pipe, prevented droplet with bigger diameter from entering the turbine, and thus protected the vanes.

减压阀与节流孔板相配合，实现对高压蒸汽的降压过程；离心式喷嘴环形布置，使喷水均匀，雾化效果好；文丘利管的使用，进一步优化了减温水的雾化效果，强化了汽水间的传热效果；混合管出口设置密封挡板和出流孔，阻止了直径较大的水滴进入汽轮机，保护了叶片。

It is also possible to predict both the frequency and amplitude of pressure fluctuation at the inlet and outlet of all parts of turbine, as well as the phenomenon of rolling vortex in the draft tube.

从而得出水轮机各部件内的瞬时流态和随时间的变化过程，预测了水轮机各部件内压力脉动的频率和幅值，并显示尾水管内的旋转涡带现象。

Because of the confinement of objective condition, the spiral case and draft tube measurement of prototype is smaller than that scaling from the model, so in design stage, analysis of the effects on turbine performance after modifying is necessary.

受客观条件制约，电站真机蜗壳和尾水管尺寸比按模型换算的真机尺寸值要小一些，在设计阶段需要通过数值模拟分析尺寸改小后对机组水力性能的影响。

It is recommended to start development of offshore drill ship. It is preferred to modify the petroleum exploration drill ship into NGH drill ship. Turbine rotating will be considered to counteract the ocean tides to obtain dynamic balance so as to ensure the stability of the NGH sampling operation.

并建议开展海洋钻井船的研制工作，可优先考虑将石油勘探钻井船改装成天然气水合物勘探钻井船；同时还要保证其取样位置的稳定性，可采取动平衡原理，通过涡轮旋转来抵消海流的作用。

By means of analyzing the recent technical level of domestic turbine governor researching manufacturers, this paper summarizes from following aspects: the governor's system structure modes, the microcomputer adjustors composed of industry control computers, dual-redundant computer issue, friendly man-machine interfaces with plenty contents, the governor's computer analog test functions, hydraulic components adopted the industry standard such as a proportional servo valve or an electrohydraulic converter composed of a servo motor, the setup of mechanical feedback and mechanical opening limited mechanism, the governor's generally raised oil pressure grade.

通过分析国内水轮机调速器研制生产厂家的最新调速器技术水平，从调速器的系统结构模式、以工业控制计算机构成的微机调节器、计算机双机冗余问题、友善且内容丰实的人机界面、调速器的计算机仿真测试功能、采用工业标准液压件如比例伺服阀或伺服电机构成的电液转换部件、机械反馈和机械开度限制机构的设置、普遍提高的调速器油压等级等方面进行了总结。

This paper take the typical craft of phthalic anhydride which productivity is 20000 ton/year as an example, and analyses the feasibility of using saturated steam turbine to generate electricity or to drive directly large-scale air blower, in order to recycle the afterheat generated in the process of phthalic anhydride production.

以生产能力为20kt/a的典型苯酐工艺为例，分析了用饱和蒸汽汽轮机回收苯酐生产中产生的余热用于发电或者直接驱动大型风机的可行性。

The wind tunnel test and numerical simulation of wind turbine tailored airfoils results supply the data to the engineering.

在三种风机上的验证试验证明该方法可以应用于风力机整机。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。