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阀门操作要点——吴忠仪表
对于阀门，不但要会安装和定期保养、维护，而且还要会操作。一般情况下，阀门的启闭遵循“逆开顺关”的准则，即逆时针旋转手轮为敞开阀门，顺时针旋转手轮为封闭阀门。
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Wuzhong instrument - common industrial pipeline identification specifications and colors
First, the effect of pipeline identification
Why do you need to do pipeline identification?
Intent: To facilitate the identification of substances in industrial pipelines, ensure safe production, and avoid misjudgment in operation and equipment maintenance. Carry out ...
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球阀的分类及基本概念——吴忠仪表
1、弹性球球阀（即轨道球阀）
弹性球球阀即轨道球阀，它的球体是弹性的。球体和阀座密封圈都采用金属材料制作，密封比压很大，依靠介质自身的压力已达不到密封的要求，有必要施加外力。这 ...
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吴忠仪表有哪些阀门制造技术？
1）铸造（casting）：资料成型办法的一种。将熔化的金属液体放入所需形状的模型中，待其凝结，冷却后取出制品。
2）铸造（forging）：将金属型材加热后 ...
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The core components and technical requirements of the safety valve - Wuzhong instrument
A safety valve is an automatic valve that uses the medium's own force to expel an additional amount of fluid without any external force to avoid the pressure exceeding the additional safety value. When the pressure has recovered to normal, the valve closes again and prevents the continuous flow of the medium. (TSG ZF001-2006)
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The structure of the centrifugal pump - Wuzhong instrument
The basic structure of the centrifugal pump is composed of six parts, namely the impeller, the pump body, the pump shaft, the bearing, the sealing ring, and the stuffing box.
1. The impeller is the core part of the centrifugal pump, its speed is high and the output is large, and the blades on the impeller play a role in the ...
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气动调节阀的维护方法——吴忠仪表
气动用调理阀的日常维护
当调理阀采用石墨一石棉为填料时，大约三个月应在填料上添加一次润滑油，以确保调理阀灵活好用。如发现填料压帽压得很低，则应弥补填料，如发现聚四氟乙燥填料硬化 ...
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Wuzhong instrument valve knowledge terms
1) General purpose valve (general purpose valve): a general term for a wide range of valves, also known as ordinary valves. It is not a valve for a specific condition and a specific purpose.
Although there is no clear definition of a universal valve, it mainly refers to a pressure below 2MPa, ...
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Advantages and disadvantages of Wuzhong instrument gate valve
Gate valves have the following advantages:
Low fluid resistance: the medium channel inside the valve body is straight, and the medium does not change its direction of activity when it flows through the gate valve.
The torque required for opening and closing is small;
It can be used on a ring network pipeline where the medium moves in both directions, that is, the flow direction of the medium is not ...
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阀门使用中常用问题——吴忠仪表
一、为什么双座阀小开度作业时简略振动 对单芯而言，当介质是流开型时，阀稳定性好；当介质是流闭型时，阀的稳定性差。双座阀有两个阀芯，下阀芯处于流闭，上阀芯处于流开，这样，在小开度 ...
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阀门组装技术要求——吴忠仪表
阀门是一类常用的五金件产品，阀门在拼装前以及装置进程中也是有必定的技术要求的，否则拼装出来的阀门则不或许体现其本身所具备的优良功能，阀门在拼装进程中有哪些技术要求呢？
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Failure analysis of valve electric actuator - Wuzhong instrument
1. The valve position of the electric actuator is lost:
1) Battery power is lost
When the incremental encoder is selected to measure the stroke, it is necessary for the fulfillment mechanism to have a battery as an auxiliary power supply, the AC power supply disappears, and the change of the valve position of the electric actuator can still be detected by the incremental encoder.
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吴忠仪表阀门分类及主要参数
阀门是在流体体系中，工良用来操控流体的方向、压力、流量的设备。阀门是使配管和设备内的介质（液体、气体、粉末）流动或中止并能操控其流量的设备。
阀门是管路流体输送体系中操控部件， ...
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弹性座封闸阀特点——吴忠仪表
闸阀的特点：
分量轻：本体选用高级球墨铸铁制成‚分量较传统闸阀分量减轻约20%——30%‚装置修理方便。
平底式闸座：传统的闸阀往往在通水洗管后即因外物比如石头‚木块、水泥、铁屑 ...
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阀门与管的连接形式——吴忠仪表
1.法兰衔接
法兰衔接：法兰衔接是指由法兰、垫片及螺栓三者相互衔接作为一组组合密封结构的可拆衔接。管道法兰系指管道设备中配管用的法兰，用在设备上系指设备的进出口法兰，法兰衔接运用 ...
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单偏心密封蝶阀技术特点及其结构——吴忠仪表
单偏心密封蝶阀技术特点
为解决同心蝶阀的蝶板与阀座的挤压问题、由此产生了单偏心蝶阀、其结构特征为阀杆轴心偏离了蝶板中心、从而使蝶板上下端不 ...
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多级泵的选型与维护——吴忠仪表
在运用不锈钢多级泵时，首先要确认多级泵的用处和功能参数并挑选泵型。挑选多级泵的准则和根据：
1、使所选多级泵的型式和功能契合设备流量、扬程、压力、温度、汽蚀余量、吸程等工艺参数 ...
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吴忠仪表阀门分类其中两种介绍
阀门的分类,结构种类,作用用途,压力级别,温度分类,阀体资料分类,通用分类
阀门产品的种类繁复，说法各不一致，有的按用途分（如化工阀门、石油阀门、油田专用阀、电站阀门等）、有的按介质 ...
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How to choose the control valve of Wuzhong instrument
1. Confirm the selection criteria
(1) Process fluid conditions: fluid name, flow rate, inlet and outlet pressure, pressure difference during normal operation, pressure difference when valve is closed, fluid temperature, specific gravity, viscosity, whether there are suspended solids, fibrous, muddy, etc. Sometimes it is possible to part with the most ...
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吴忠仪表让你学会识别翻新阀门
现在阀门市场鱼龙混杂，不法商贩为牟取暴利，冒充创新阀门以次充好，给装置工程带来极大安全隐患。因而，很有必要向咱们介绍一下识别创新阀门的检验。现在阀门市场的经销商中主要存在的阀门造假 ...
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