查询词典 valve control

Lightened on the turbine valve controller designed with feedback linearization theory and introduced nonlinear tracking-differentiator, a novel nonlinear PID valve controller was proposed. This controller can fit not only to plant with some model error and random disturbance in variable, but also to the variety of the structure and operating conditions of power system. The transient and dynamic characters of the controller are both satisfactory when big and small disturbances added. The good performance, wide stable margin and heavy robustness of the valve controller proved that it is a great practical application to enhance the stability of power system.

结合反馈线性化法汽轮发电机组的汽门控制研究成果，引入非线性跟踪微分器和非线性度变换控制，进行了发电机组的非线性PID汽门控制器设计，该控制器不仅能适应一定的系统模型误差与变量的不确定性干扰，而且对于电网结构和运行工况的变化有着较强的适应能力，在受大、小扰动的情况下，呈现了较好的暂态特性和动态品质，具有较好的控制品质、较高的稳定裕度和较强的鲁棒性能，有利于进一步改善电力系统的稳定性，显示了其较强的实用性。

In the actual production process, the flashing and citation will form vibration and noise, shorten the life of the valve, so the choice should be to prevent the valve produces flash valve and citation.

在实际生产过程中，闪蒸和空化会形成振动和噪声，缩短阀门的使用寿命，因此在选择阀门时应防止阀门产生闪蒸和空化。

In the actual production process, the flashing and cavitation not only affect the calculation of flow coefficient, but also the formation of vibration and noise, shorten the life of the valve, so the choice should be to prevent the valve produces flash valve and cavitation .

在实际生产过程中，闪蒸和空化不仅影响流量系数的计算，还会形成振动和噪声，使阀门的使用寿命变短，因此在选择阀门时应防止阀门产生闪蒸和空化。

Because the crank is connected with the shaft through the flat key and the shaft is fixed onto the valve plate with the pin, thus the valve plate is driven to turn in the valve body so as to change the flow area of the pipeline change to regulate the flowrate of the medium.

由于曲柄通过平键与轴连结，。轴与阀板用销子固定，从而带动阀板在阀体内回转，使管道流通面积变化，达到调节介质流量。

Metal floating valve seat seal structure between the float valve seat and valve seal is not easy.

金属浮动阀座密封结构其浮动阀座与阀体之间不易密封。

The vent valve utilizes a float to actuate the valve plug which is located at the top of the valve.

这种排气阀采用一个浮子来启动位于阀门顶部的阀门塞子。

Which is usually two two-high temperature and electromagnetic valve to the various specifications for electromagnetic Valves, manual valves, foot valve, mechanical valve, gas cylinders and various sources processor is the leading product in our factory, in production and marketing 500,000 sets exported to Europe and the United States in Southeast Asia and other regions, were welcomed and praised the foreign.

其中二位二通常温高温电磁阀以及各种规格电磁换向阀、手控阀、脚踏阀、机械阀、气缸和各种气源处理器是我厂的主导产品，年产销50万套，远销欧美东南亚等地区，受到外商的欢迎和好评。

All in all, TRZ series elastic sealing gas valve suitable for gas pipelines, particularly suitable for underground gas pipeline, from the study of the situation abroad, many countries have adopted flexible natural gas pipeline valve plate, the same nominal diameter flexible valve plate Compared with the ball, have fire protection features, the price is about 30% lower than the ball, use the same effect.

总而言之，TRZ系列弹性密封燃气闸阀适用于燃气管线，特别适用于地下燃气管线，从国外考察的情况来看，许多国家的天然气管线上都采用弹性平板闸阀，同公称通径弹性平板闸阀与球阀相比，都有防火功能，而价格比球阀低30%左右，使用效果相同。

The valve gate unit has a valve pin for controlling the flow of the molten plastic from a hot runner system to an injection chamber and an activating unit coupled with the valve gate unit.

阀门单元具有一被用来控制从一热流道系统到一注射腔室的熔化塑料流的阀销以及一与阀门单元连接的致动单元。

In addition to extending through the valve cover, so that the temperature packing medium temperature of the long neck away from the valve cap, the can increase heat or heat-absorbing film, made with heat, or heat-absorbing film of long-necked type valve cover to medium temperature is reduced or increased.

除了通过把阀盖延伸，使填料处温度远离介质工作温度的长颈型阀盖外，也可增加散热或吸热片，制成带散热或吸热片的长颈型阀盖，使介质温度得到降低或提高。

It was titled "Narcissistic Men and Women Think They Are So Hot, but They Are Not."

标题是"自恋的男人和女人认为自己很性感，其实不然"。

I saw a bright shoulder pole star in this unclouded summer nigth.

晴朗的夏夜，我看见了明亮的扁担星。