主阀主要由阀座、主阀盘、活塞、弹簧等零件组成。
Mainly by the main valve seat, the main valve plate, piston, springs and other parts.
主阀，截止阀或角阀结构，采用隔膜驱动，液压操作。
The main valve, globe or angle pattern, is diaphragm actuated, hydraulically operated.
不需要从管线上拆卸阀门，就可以对主阀和引导系统进行维修。
The main valve and pilot system can be serviced without removing the valve from the line.
主阀轴配置一个内轴，适用于双重调节止动记忆和阀门位置设置。
The main valve spindle incorporates an inner spindle for double regulation memory stop and valve position setting.
软密封的主阀瓣能在95%以上的开启压力范围内获得高密封度。
Soft airproof main valve can obtain high airproof in the scope of over 95% lift pressure.
水力控制阀是由一只主阀及其外装之针形阀和先导阀等组合而成。
Hydraulic control valve is a main valve and the exterior of the needle valve and a combination of the pilot valve.
结果表明，具有环形槽的主阀芯结构能有效抑制气穴和气穴噪声。
The results show that the main element with circumferential undercut groove can suppress the cavitations and cavitating noise.
水力控制阀由一个主阀及其附设的导管﹑导阀﹑针阀﹑球阀和压力表等组成。
Hydraulic control valve consists of a main valve and attached to the catheter, guided valves, needle valves, ball valves and pressure gauges and other components.
通过对精密加工件分配阀体主阀孔的加工工艺试验及研究，总结了一套行之有效的加工工艺。
A complete processing technology is summed up for the main valve opening of the dividing control valve in the fine machining pieces based on the study and test.
从JZ 7型空气制动机本身的结构出发，提出了客运机车分配阀的方案，研制了新的分配阀主阀。
Based on the inhouse structure of JZ-7 air brakes, the design scheme of distribution valves for passenger locomotives was proposed and the main valve of new distribution valves was developed.
该分层扫气系统由曲轴箱、主扫气道、副扫气道、分层管、笛簧阀和化油器等组成。
The scavenging system is composed of crankcase, main scavenging passage, sub passage stratifying pipe, reed valve and carburettor.
柴油机上的主启动阀可以手动和电控操作。
The master starting valve, built on the engine, can be operatedboth manually and electrically.
对液压部分进行了主要元件如主泵、阀和液压缸的主要参数进行了匹配计算，并对系统的一些主要静态指标进行了计算。
Specification matching calculations are made for the main hydraulic components such as the main pump, valves and oil cylinder and some main static specifications in the system are also calculated.
最后，给出在83 %FP以下的功率运行下进行主蒸汽安全阀定值校验试验的窗口安排与注意事项。
Finally, scheduling and precautions for verification tests of the calibration pressure of main steam safety valve under 83 % FP power level are given.
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；
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.
采用非结构化四面体网格，对某600MW超超临界汽轮机组高压主汽调节联合阀的额定工况进行了数值模拟。
Unstructured tetrahedral meshes are used to simulate the flow field inside high pressure combined valves of a 600mw ultra supercritical steam turbine under the nominal condition.
当节流阀进一步打开时，主喷口开始工作。
Further opening the throttle valve activated the main fuel jet.
主油路中装有安全阀以控制压缩机轴承中的油压。
Cast iron relief valve in main oil system to control oil pressure to the compressor bearings.
主空气压缩机的充气试验，安全阀和自动装置的调整。
Charging test and safety valve and automatic device adjusting for main compressor.
针对山西兴能发电有限责任公司高压主汽阀门泄漏以及高压调汽阀卡涩的问题，从垫片的材质、螺栓的预紧力以及机械结构等多方面进行了细致地分析。
Focus on the leak and block of the high pressure main stop valve, from the material of the gasket, the pressure of the bolt and the entire mechanical structure in Gujiao Xingneng Power Generation Co.
本文分析了货油系统管路的泵阀工作状态逻辑，为货油装卸主系统的软件设计奠定了理论基础。
Analyzes the logical status of pumps and valves of the cargo system, which establishes the base of designing the monitoring software of cargo main system.
针对反应堆的特殊要求，主氦循环风机的设计包括总体结构、叶轮型式、冷却系统、轴承、测量仪表、电气贯穿件和隔断阀。
The design of the helium circulator involves the overall construction, the impeller type, the cooling system, the bearings, the instrumentation, the electrical penetrations, and the shutoff valve.
介绍了汽轮机转子、主蒸汽管道、汽缸和阀壳稳态蠕变应力和非稳态蠕变应力的计算方法，采用大型有限元分析计算程序计算汽轮机部件的非稳态蠕变应力和稳态蠕变应力。
The method takes into consideration both for steady and unsteady creep stresses of rotors, pipes, casings and valve housings to be determined with the help of finite element analysis programs.
采用非结构化四面体网格，对某600MW超超临界汽轮机组高压主汽调节联合阀的额定工况进行了数值模拟。
Unstructured algorithm is employed in this paper to simulate the complex flow field inside high pressure combined valve of a 600MW steam turbine.
通过陶瓷压砖机液压系统试验，得到了各工作循环时的动梁运动曲线、主缸压力曲线、系统压力曲线和各伺服比例阀的控制信号曲线等试验数据。
By the hydraulic system test, we obtained the experimental data, such as the curves of the beam movement, pressure and valve's control signal and flow.
主马达采用双电磁阀控制系统，当一个电磁阀出现故障时，设备还能正常工作，不影响任何使用。
The main motor adopts double electromagnetic controlling system. The operation won't be affected if malfunction happens to the electromagnetic valve but equipment still works.
对核电站用两种主蒸汽隔离阀的结构、系统、性能、运行和可检修性进行了分析和比较，为主蒸汽隔离阀的选型提供了参考。
The structure, system, performance, operation, maintenanciability of two kinds of main steam isolation valve (MSIV) are analyzed and compared, which provides reference for the setat type of MSIV.
并且在三通调节阀调节的过程中，主管路流量是变化的，只要采用合适的泵和节流装置，可以实现主柴油机的变流量冷却。
If suitable pump and throttle equipment are applied, we can realize the variable flow cooling for main Marine diesel engine.
并且在三通调节阀调节的过程中，主管路流量是变化的，只要采用合适的泵和节流装置，可以实现主柴油机的变流量冷却。
If suitable pump and throttle equipment are applied, we can realize the variable flow cooling for main Marine diesel engine.
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