7 hr 30 min Even after operators pump water into the primary loop, pressure is still high. The PORV 'backup valve is opened to lower the pressure.
7小时30分钟尽管操作员已将水抽入主回路，但温度仍然很高。减压阀的备用阀门被打开，减少压力。
The Sentronic series software features control loop customization so the valve can be tuned to the application.
该系列软件的功能昱准控制阀回路定制功能，这样可以调整到应用程序。
The relief valve and the pipeline are both important components of the hydraulic system, and that system including of relief valve and pipeline and constant pump is the basic loop of it.
溢流阀和管道都是液压系统的重要元件，而溢流阀、管道和定量泵组成的系统又是液压系统的基本回路。
This paper introduces an electrohydraulic control system based on PLC. A double close - loop control system with electro - hydraulic proportional valve is adopted.
一种基于PLC的电液自动控制系统，采用了电液比例阀的双闭环控制系统。
It has the higher switching speed and frequency and can be used as the pilot valve for a larger flow rate valve, or as a direct control valve for small flow rate hydraulic loop.
该阀具有很高的切换速度和频率，可以用来作为大流量高速开关阀的先导控制阀，也可以在小流量回路中直接作为控制阀使用。
The press takes use of advanced two-way cartridge valve system and imported electric pump technology which can realize double closed loop control of pressure and flow rate.
液压系统采用了先进的二通插装阀系统、进口高性能的电子泵技术，实现了主缸压力与流量的双闭环控制；
ZWB222 series hydraulic balance valve for finishing hydraulic balance during all offshoot loop of one system.
ZWB222系列水力平衡阀用于完成一个系统中各分支回路间的水力平衡。
In dealing with the relationship of the servo valve position control and the adaptive control, the Double-loop control is adopted.
提出了伺服阀的位置控制和颤振的控制关系上采用可切换的双通道控制形式的设计思想。
Introduces structure design of static sealing and dynamic sealing applied to loop valve with the medium of liquid sodium.
介绍了应用于液态金属钠介质回路阀门的静密封和动密封结构设计。
Hydraulic counterbalance valve is a key element in the hydraulic balanced loop, which is applied abroad in modern engineering mechanism especially in elevating machinery.
液压平衡阀是平衡回路中的关键元件，在现代工程机械特别是起重运输机械中应用广泛。
The failure of valve opening sensor would cause valve management of DEH system working confusedly, and result in large scale change of turbine power in the case of governing stage pressure loop idle.
DEH系统中阀位传感器的故障会给阀门管理带来混乱，特别在调节级压力回路未投入的情况下会引起汽机功率的较大变化。
This paper describes the stability of control loop consisting of refrigeration evaporator and thermostatic expansion valve. It may directly influence refrigerating efficiency and operation safety.
分析热力膨胀阀和蒸发器调节系统的稳定性，它直接影响着制冷效率和运行安全。
Through dividing electronic expansion valve from evaporator system and based on constant gain of superheat open loop rule, the compensation theory of valve head was analyzed.
通过将电子膨胀阀与受控对象(蒸发器)细化分开来，并依据恒定开环增益准则从理论上分析了阀头补偿原理。
Process control is under the influence of all parts of loop, but the most direct and apparent part is the final element i. e. control valve.
过程控制中的各个环节对控制都有影响，而最终环节即调节阀对过程控制的影响最为直接和明显。
An internal circulation loop of heating tank composed of three-function valve and jet tube is added in original pump arrangement.
本发明是在原有的泵油装置中，增加一套由三能阀及喷管等组成的加热罐内部循环回路。
Moreover, this paper puts forward an adaptive method of control valve based on open-loop and enhances measure accuracy through curve fitting method.
同时，本文提出一种基于开环的阀门开度自适应控制方法，通过在线曲线拟合的方法提高阀门控制的精度。
When the pump is normal work, but through the valve and pump water loop truncate the channel impeller, and put off the liquid water ring round.
当泵正常工作后，可通过阀截断水环轮和水泵叶轮的通道，并且放掉水环轮内的液体。
The pressure gain curve is used for accurate modeling of the valve but has little effect on closed loop control.
压力增益曲线被用于阀门的精确建模，但对闭环控制的影响很小。
The safety valve of grade 2 and 3 auxiliary system is the protective device against the overpressure in the auxiliary system of the first loop.
核2，3级辅助系统安全阀是核电站----回路辅助系统的超压保护装置。
It is composed of the circulating water loop in constant temperature, surge tank, solenoid valves, flow regulating valve, electronic scale and control units.
整个系统包括恒温循环水回路、稳压罐、电磁阀、流量调节阀、电子秤和控制单元等组成部分。
The valve consists of an electromagnetic loop, a valve core, a replacement spring and a shell and the valve core consists of a retaining iron, a movable bar and a sealing pad.
它由电磁线圈、阀芯、复位弹簧和外壳组成，阀芯由挡铁，动杆和密封垫构成。
This paper deals with a closed-loop digital control for a hydraulic valve, controlled motor speed system.
研究了用位总线微机构成的液压阀控马达速度闭环数字控制系统。
The control valve Handbook, Fourth Edition, is both a textbook and a reference on the strongest link in the control loop: the control valve and its accessories.
此第四版控制阀手册既是一本教科书也是控制循环(控制阀和其部件)中强有力链接的参考资料。
Liquid level transmitter of pump tank, concentration analyzer, crossflow regulating valve and automatic crossflow model were improved and PID parameters of regulating loop were tumed.
介绍了干吸工序自动串酸系统存在问题及解决措施，针对泵槽液位计、酸浓度分析仪、串酸调节阀、自动串酸模式存在的问题做了相应改进，并整定了调节回路PID参数。
It is also stressed that the orifice of the valve adopting linear, small gain form is suitable to reduce open-loop gain of the system and increase the stability.
文中还强调平衡阀的节流口宜采用线性小增益形式，以利于降低系统开环增益，提高稳定性。
The mechanical throttle valve is electrically controlled, e. g. the valve position is under closed-loop control to the output of the pressure gauge.
所述机械节流阀受到电控制，例如阀门位置受到根据所述压力表的输出进行的闭环控制。
According to the references and results of animal experiments, an intussusceptive valve was made on the jejunal loop in 16 cases to prevent ascending cholangitis.
根据文献和作者对重建回盲瓣的动物实验研究结果，16例在胆肠袢上作了套叠瓣。
The "press deviation dragging load"loop has been designed in order to limit the response speed of turbine valve;
设计了汽机侧的“压力偏差回拉功率”回路，以限制汽机侧调门的动作速率；
A pressure driver for a ventilation system comprises a gas source, an inspiration flow control valve and a patient pressure sensor to form a closed loop control system.
一种用于通气系统的压力驱动器，包括气体源、吸气流量控制阀和患者压力传感器，以形成闭环控制系统。
A pressure driver for a ventilation system comprises a gas source, an inspiration flow control valve and a patient pressure sensor to form a closed loop control system.
一种用于通气系统的压力驱动器，包括气体源、吸气流量控制阀和患者压力传感器，以形成闭环控制系统。
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