Wuzhong instrument - what is the anti-loosening effect of spring washers?

Nowadays, the valve market is mixed, and illegal traders pretend to be innovative valves to be shoddy in order to make huge profits, which brings great safety risks to the installation project. Therefore, it is necessary to introduce to you the inspection of innovative valves. At present, the valve market dealers mainly exist in the valve counterfeiting ...

1. System overview The valve automatic control system controls the solenoid valve equipment placed in the field by announcing the instructions of the control service center in a wireless way, and then realizes the opening and closing of the solenoid valve, and the opening and closing status of the valve, the operation status, whether the equipment is online, historical data inquiry, etc.

First, there is a leak in the safety valve. The industry said that when there is a small leakage in the safety valve, it is generally not easy to find, but even a small leakage point will expand in the erosion. The test method is to test ...

Knife gate valve is a kind of valve, which is called knife gate valve because of its different structure. It has outstanding circularity through the use of some special media, such as some viscous media, granular media, etc. It solves some of the problems of modern equipment and becomes an indispensable component of modern equipment ...

在过程操控体系中，调节阀接受调节仪表的操控信号，直接与流体触摸，调节流体的流量，调控体系中的流量、压力、温度、液面等要素，因此了解调节阀的根本结构、特点，按照体系工艺条件正确挑选。 ...

1. Impurities are stuck on the sealing surface of the valve The valve is sometimes closed suddenly, it may be that there are impurities stuck between the sealing surface of the valve, at this time should not be forced to close, the valve should be opened slightly larger, and then try to close, try repeatedly, it can generally be eliminated, otherwise it should be checked again...

The angular displacement of the valve position detected by the valve limit switch box changes the transmission shaft through the coaxial adjacency or the reaction rod, so that the cam touches the miniature switch, so that the contact of the switch assembly is closed or disconnected, and the switching signal is transmitted to the outside through the terminal, and the passer is displayed on the spot. ...

1. According to the use occasion and use of the valve, confirm the driving method: manual, electric, pneumatic, and hydraulic. 2. Selection of manual methods: The standard of ball valve and butterfly valve "DN150 can be driven by a handle; Standard DN200 should be used to drive worm gearbox. b. Gate valve ...

自力式调节阀又称自力式操控阀，是依流经阀内介质本身的压力、温度作为能源，使用阀输出端的反应信号(压力、压差、温度)经过信号管传递到执行机构，驱动阀瓣然后改动阀门的开度，达到调节压力、 ...

Valves often present some troublesome problems in the process of use, such as the valve is not closed tightly, not tight, so what should I do? Under normal circumstances, if it is not tightly closed, first admit whether the valve is closed in place, if it has been closed in place, it still exists.

1. The valve positioner is divided into pneumatic valve positioner, electrical valve positioner and intelligent valve positioner according to the input signal. (1) The input signal of the pneumatic valve positioner is a standardized gas signal, for example, the 20-100kPa gas signal, and its output signal is also a standardized gas signal. （ ...

The control valve, also known as the control valve, is a device in the field of industrial automation process control that uses power operation to change the process parameters such as the flow, pressure, temperature, and liquid level of the pipeline medium.

1. What is a chemical centrifugal pump? Answer: It is a machine that adds liquid energy by increasing the effect of centrifugal force through the impeller to increase the mechanical energy of the liquid, so as to transport the liquid. 2. What are the characteristics of chemical centrifugal pumps? Answer...

正确运用热电偶不但能够精确得到温度的数值，保证产品合格，并且还可节约热电偶的资料耗费，既节约资金又能保证产品质量。装置不正确，热导率和时刻滞后等差错，它们是热电偶在运用中的首要差错 ...

1. When the sealing surface is grinding, the grinding tools, abrasives, abrasive cloth and sandpaper and other objects should be selected in a reasonable grinding method, and the coloring inspection should be carried out after grinding, and the sealing surface should be free of indentations, cracks, scratches and other shortcomings; Second, the connection between the valve stem and the closure should meet the planning requirements, and the top center is not suitable.

（1）密封副为球面、阀瓣偏疼回转规划 　　阀门密封副选用球形规划，密封效果好。一起阀瓣旋转中心规划成与阀座中心有一个偏疼，因而阀瓣在关闭时与阀座间形成了偏疼凸轮楔紧的密封效应，阀门 ...

调理阀又称操控阀，是工业自动化进程操控领域中，用动力操作去改动调理管道介质流量、压力、温度、液位等工艺参数的装置。首要由操作履行机构与调理阀阀体组成，接受相关信号，改动阀门的开度巨 ...

　　Selection: The butterfly plate of the butterfly valve is installed in the diameter direction of the pipe. The butterfly valve has a simple structure, small size, light weight, only a few parts, and only needs to rotate 90° to quickly open and close, the operation is simple, and the ...

低温阀门发生走漏的原因主要有两种状况，一是内漏；二是外漏。 　　1)阀门发生内漏 　　主要原因是密封副在低温状态下发生变形所形成的。 　　当介质温度下降到使资料发生相变时形成体积改变 ...

尽可能坚持阀和执行机构的清洁。 流量实验后将阀排干。 在储存和安装过程中，要避免污物侵入。 假设呈现毛病，按说明书查看。 不要用撬杠或过大的 ...