查询词典 pressure valve

Some innovative approaches were presented to resolve the problem existing in the first generation of boost compressor by increasing the flow area of fluidics nozzle to decrease pressure drop and erosion attack, adding a new flow path in order to improve boosting effect of the second piston bore, connecting a bypass valve in parallel with throttle valve to set a partial flow and regulate pressure drop.

针对第一代样机存在的问题，提出了改进措施：①增加射流元件喷嘴过流面积来降低压耗和冲蚀破坏；②在射流元件输出道与二级活塞缸之间增加新流道，提高二级活塞缸增压效果；③在节流阀位置并联旁通阀进行分流稳压。

December 2, 2009 afternoon, Tuen valves trial of 40-inch diameter, Butterfly Valves pressure ball valve 600Lb welded pipeline testing organization in the state authority - Hefei Hefei General Machinery Research Institute under the Electrical Products Inspection Institute under test successfully passed through the pressure seal, Hydraulic seals and intensity of three tests, which marks the Tuen valves welded large diameter pipeline valve trial project a complete success.

2009年12月2日下午，屯阀公司试制的口径40寸、压力600Lb全焊接管线球阀在国家权威检测机构―合肥通用机械研究院下属的合肥机电产品检测院检测下，顺利通过气压密封、液压密封和强度三项试验，这标志着屯阀公司大口径全焊接管线球阀试制项目取得圆满成功。

One valve is the pressure-relief valve, which prevents pressure in the tank from rising too high.

一个是减压阀，以防止油箱中的压力过高。

In case that the pressure gauge of the above valve indicates other position than zero, the pressure reducing valve (35) is not good.

在上面的阀的压力表都指示大于零的情况下，减压阀35不良。

Pressure reducing valve:A self-operating valve used to reduce any excess pressure in a system, eg steam.

减压阀：一种自作用阀，用于削减系统中多余的压力，比如蒸汽压。

Pilot-operated pressure regulating valve the air is normally provided by a small supply of direct-acting pressure reducing valve.

先导式减压阀的调压空气一般是由小型的直动式减压阀供给的。

Based on the presentation of types of pressure reducing valve , how to select the position of pressure reducing valve in building fire water supply system was discussed in the design of No.

在介绍了减压阀类型的基础上，结合南宁世贸商城三号楼设计，探讨了减压阀在建筑消火栓给水系统中的位置选择问题，可供建筑消防给水系统设计和审查人员参考。

Conditioning use: used to adjust the pressure and flow medium, such as the regulating valve, pressure reducing valve.

调节用：用来调节介质的压力和流量，如调节阀、减压阀。

For a long time, our company has specialized in manufacturing diesel valve spring, high-pressure pump, pneumatic hydraulic element spring, pressure regulating spring, delivery valve spring, plunger spring, clutch spring 、 suspension spring 、 die spring 、 disk spring 、 tension spring 、 wire form spring 、 torsion spring etc. for all kinds of motors, motorcycles, tractors and engineering machines.

本公司长期专业生产各类汽车、摩托车、拖拉机及工程机械等配套用内燃机气门弹簧、高压油泵和气动液压元件弹簧、调压弹簧、出油阀弹簧、柱塞弹簧、离合器弹簧、悬架弹簧/减振器弹簧、模具强力弹簧、涡卷弹簧、重型机械用弹簧、碟形弹簧以及拉簧、扭簧、卡簧等，钢丝线径为0.1-75.0mm。

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。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。