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The critical gas velocity through valve holes,pressure drop,entrainment and weeping were measured.

采用空气-水系统,在500 mm×500 mm的方形塔内,对不同浮阀的升程对导向梯形浮阀塔板的流体力学进行了实验研究,测定了塔板压降、泄漏和雾沫夹带。

The critical gas veocity through、valve holes,pressure drop,entrainment and weeping have been measured.

应用空气－水系统，在１６００ｍｍ×４００ｍｍ的矩形塔内，对梯形导向浮阀塔板的流体力学进行了实验研究，测定了阀孔临界气速、塔板压降、雾沫夹带和泄漏。

The correlations have been obtained for the critical gas velocity through valve hole,pressure drop,entrainment and valve hole gas velocity at weeping point, which can be used in the design of trapezoidal directed valve trays.

本文探讨了该塔板的流体力学模型，得出梯形导向浮阀塔板的阀孔临界气速、塔板压降、雾沫夹带和泄漏点孔速的关联式，可供梯形导向浮阀塔板设计之用。

Study on the blind number recognition of the calculation of roof pressure;

顶板压力计算的盲数辨识研究

Effect of igneous rock on the roof pressure of mining field;

火成岩对采场顶板压力分布的影响

By a long-term effective observation and analysis of roof pressure at thick seam caving face such as observing by installing 11 YZJ-60-disc pressure instruments,preliminarily several very important regularity of the pressure curv at fully mechanized actual mining are got,which provides a useful guide for the actuat mining.

通过对厚煤层综采放顶煤工作面顶板压力进行长期有效的观测与分析,在工作面支架上安装11台YZJ-60型圆盘测压仪进行观测,初步得出了综采工作面回采几个重要的压力显现规律曲线,为工作面的回采提供了有益的指导。

Research of entrainment and tray pressure drop of new directed bridge valve trays;

新型导向桥阀塔板的雾沫夹带和塔板压降

In the experiments, hydraulic properties, such as tray pressure drop, entrainment rate and leakage rate, were measured, and mass transfer efficiency were determined through the m.

在1000mm×350mm规格的矩形实验塔中,应用典型的水-空气冷模实验系统对3D圆阀和F1型浮阀两种塔盘进行了对比实验研究,测定了多种气液负荷下两种圆形浮阀塔板的板压降、雾沫夹带和漏液量等流体力学性能。

The hydraulic properties,such as tray pressure drop,entrainment rate,and weeping rate were measured,and the mass transfer efficiency was determined through the method of oxygen-absorptions.

应用典型的水-空气冷模实验系统对3D条阀、STV条阀和F1型浮阀3种条阀进行了对比实验研究,测定了多种气液负荷下3种浮阀塔板的板压降、雾沫夹带和漏液量等流体力学性能,利用氧解吸法测定了3种浮阀塔板的传质效率。

The hydrodynamic performance index-plate pressure drop, etc, was investigated by using air-water system in a column with side length of 500×500mm.

开发出一种新型微孔介质塔板—泡沫镍塔板 ,并在一个 5 0 0× 5 0 0mm2 有机玻璃方塔内用空气—水系统测定了其流体力学性能指标—塔板压降等 ,用二氧化碳解吸实验测定了塔板效率 ,研究了它们随空塔动能因子、堰高和液流强度变化的规律。

The hydrodynamic performance index-plate pressure drop, weeping, etc, was investigated by using air - water system in a column with side length of 500mm X 500mm, and the changing rules of plate pressure - drop, weeping with weir height, liquid strength or F factor were obtained.

开发出几种新型塔板多孔分离罩形元件——丝网翠、小孔罩和铜砂微孔罩,并将其设计成不同的形状, 在一个500 mm×500 mm有机玻璃方塔内用空气-水系统测定了其流体力学性能指标——塔板压降、漏液等, 研究了它们随板孔动能因子、堰高和液流强度变化的规律。