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.
由于导阀系统排水量大于针阀的进水量，主阀控制室压力下降。
As guided needle valve system is greater than the amount of water displacement, the main valve pressure drop in the control room.
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.
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.
在稳定状态下，控制室进水、排水相同，主阀开度不变，出口压力稳定。
In the steady state, the control room water, drainage same, the main valve opening constant outlet pressure stability.
通电后，电磁力直接把先导小阀和主阀封闭件依次向上提起，阀门打开。
Power, the electromagnetic force directly to the pilot valve and main valve closed small pieces followed by upward, open the valve.
当水位下降后，主阀由浮球开关控制打开进水口向水池汪水，实现自动补水。
When the water level drops, the main valve is composed of a floating ball switch control to open the water inlet to the water tank, automatic replenishment.
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.
控制室停止排水，此时主阀控制室内压力升高并关闭主阀，出口压力不再升高。
Control room to stop the drainage, when the main valve control room pressure rise and close the main valve outlet pressure will not rise.
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.
当水池水面下降后，浮球阀重新开启，控制室水压下降，主阀再次开启继续供水，保持液面的设定高度。
When the water tank after falling, floating ball valve to open, the control room pressure drops, the main valve to open again to water, keep the level set height.
进口持压泄压阀由主阀、泄压/持压导阀针阀、 、球阀、微形过滤器和压力表组成水力控制接管系统。
A pressure relief valve from the main valve, pressure relief / holding pressure pilot valve needle valve, ball valve, micro shaped filter and pressure gauge hydraulic control over the system.
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.
主气压缩机的充气试验、全阀和自动装置的调整。
Charging test and safety valve and automatic device adjusting for main compressor (auxiliary compressor).
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.
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.
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.
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.
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.
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.
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.
首先，能过作为一个自动逆止阀，防止蒸汽从主蒸汽加热器上倒流到锅炉里。
First: to act as an automatic non-return valve by preventing a backflow of steam from the main steam header to the boiler.
文章以核电厂s G主给水调节阀泄漏人因事件为例进行了说明。
It takes nuclear power plant's SG valve leakage human error as an example for illustration.
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.
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.
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