查询词典 gate valve

Germany FRING Forint flow control valve is the field of the Asia-Pacific region a major producer and supplier of one of the company is headquartered in Frankfurt, the company is committed to research and development of fluid control valves, fluid control equipment, production systems, in many countries and have produced valve gate base.

德国FRING福林阀门是亚太地区流体控制领域的主要生产和供应商之一，公司总部位于法兰克福，公司致力于科研开发流体控制阀门，生产流体控制设备系统，在许多个国家均有生产阀门基地。

A gate or ball type valve can be used or the isolation valve can be installed further upstream.

可以采用闸阀或球阀，或者可以将隔离阀安装在更上游的地方。

If conditions in the middle gate opening, the valve plate because it is by both sides of the guide support, all API Cast Steel Valves closed with the close, while the middle position, the valve plate and the rail vibration caused by a large gap.

闸阀工况若处在中间开度，阀板球阀因为是靠两侧的导轨支撑，全闭时配合紧密，而中间位置时，阀板与导轨间隙大而产生振动。

As the complete characteristic curves of reversible pump turbine are often used to calculate the instantaneous parameters, this paper studies the characteristic curve and the wicket closure and opening law in pumped storage plants.Chapter 1 presents the importance and the necessity of this study and reviews the previous related research on hydraulic transient process and valve regulation in pumped storage plants.Chapter 2 analyzes the six collected characteristic curves of reversible pumped turbine and studies their diversification from the point of view of specific speed. The six collected discharge and moment curves with maximum efficiency have been fitted to piecewise continuous curves. This curve-fitting procedure is listed.Chapter 3 takes Liyang Pumped storage plant as an example and analyzes the effect of different characteristic curves on regulation guarantee parameters and the variety of its trochoid during the same operation status.Chapter 4 takes three pumped storage plants with different heads as examples and studies the characteristic of coordinated closure with wicket gate and ball valve and its effect on dynamic pressure in the spiral case, inlet pressure in the draft tube and the rise of rotating speed.Chapter 5 summarizes this paper and point out what should be done in the future research.

由于在过渡过程分析计算中，需要频繁利用可逆式机组的全特性曲线推求机组的瞬时参数，所以本文就特性曲线及关闭规律问题进行了研究，其主要内容如下：第1章，指出本文研究的意义和目的，回顾前人对水力过渡过程、抽水蓄能电站及阀调节的研究成果，在此基础上提出本文的研究内容；第2章，针对收集到的六套特性曲线，从比转速的角度出发来研究可逆式机组特性曲线的变化规律；并对六套曲线的最高效率流量和力矩曲线进行分段拟合，得到各分段函数的具体形式，再通过举例说明最高效率曲线的拟合步骤；第3章，以溧阳抽水蓄能电站为实例，分析讨论不同比转速特性曲线对调保参数造成的影响及对于相同工况其轨迹线的变化；第4章，结合高、中、低三水头段抽水蓄能电站，在导叶直线关闭的基础上，研究导叶与球阀协联关闭规律的特点及对蜗壳动水压力、尾水管进口压力及转速上升造成的影响；第5章，总结全文，提出今后研究的重点和方向。

Butterfly valve gate is a disc-shaped pieces of the butterfly plate in the valve body around its own axis of rotation, or adjustments to achieve the purpose of headstock.

蝶阀启闭件是一个圆盘形的蝶板，在阀体内绕其自身的轴线旋转，从而达到启闭或调节的目的。

The new injected moulded foot valve screens Gate Valves replace Asahi's fabricated foot valve screens.

新注入成型底阀屏幕取代朝日精密的脚踏阀屏幕。

It is mainly made up of frame, gate board, screw pole, nut etc. Rotate the hwheel by h, then the screw pole drives the nut gate board move in horizontal to fro to open or close the valve.

主要由框架、闸板、丝杆、螺母等零件构成，用手转动手轮使丝杆带着丝杆螺母和闸板沿水平方向往复运动，达到闸门的启闭目的。

It is mainly made up of frame, gate board, screw pole, nut etc. Rotate the handwheel by hand, then the screw pole drives the nut a nd gate board move in horizontal to a nd fro to open or close the valve.

主要由框架、闸板、丝杆、螺母等零件构成，用手转动手轮使丝杆带着丝杆螺母和闸板沿水平方向往复运动，达到闸门的启闭目的。

Bellows Gate Valves However, in large differential pressure operating conditions, evaporation pressure has eased, the evaporator load requirements of the fluid volume decreased, but the actual situation the contrary, in the suction superheat unchanged, due to evaporation pressure has eased, the evaporator outlet pressure be reduced accordingly, pressure changes above and below the diaphragm, causing the main valve opening increases for increased fluid; but in a small pressure operating conditions, evaporation pressure rise, evaporator load demand for fluid volume increased, but the reality is that in the suction gas superheat unchanged, due to evaporation pressure rise, a corresponding increase in the evaporator outlet pressure, pressure difference above and below the diaphragm smaller, so that the main valve opening decreased for the reduction of liquid volume; in variable load is all about.

但在大压差工况下，蒸发压力降低，蒸发器负荷需求的液量减少，但实际情况相反，在吸气过热度不变的情况下，由于蒸发压力降低，蒸发器出口压力相应降低，膜片上下的压差变大，使主阀开度增大，供液量增加；但在小压差工况下，蒸发压力上升，蒸发器负荷需求的液量增多，但实际情况是在吸气过热度不变的情况下，由于蒸发压力上升，蒸发器出口压力相应提高，膜片上下的压差变小，使主阀开度减小，供液量减少；在变负荷下亦如此。

Based on ANSYS, this paper considers the sluice valve and the base as a whole to take the Nonlinear Finite Element Study of the static and dynamic, at the same time discusses the interaction among sluice valve, pile and construction. Then some conclusions are drawn by comparing and analyzing the dynamic stress conditions of the gate chamber using response-spectrum method and time history method.

本文基于大型通用有限元软件ANSYS，将该水闸闸室结构与地基作为一个整体进行非线性静动力有限元计算，有效的考虑了地基-结构的相互作用，并将振型分解反应谱分析法和时程分析法的计算结果进行对比并得出相应的结论。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。