Valve bellowsA wide range of applications, due to a variety of advantages, in the market is also a very popular product. But it also has a lot of need to know when using knowledge, after all, there are many users do not understand these. The next small series for everyone to introduce the basic overview of the valve bellows.

Although the use of the valve bellows is very extensive, but most of the readers in the time to see this product is not enough to understand. Especially for its characteristics. Just today we take this opportunity to tell you about it. First of all, the valve bellows mainly refers to the tubular elastic sensitive element connected with the foldable corrugated sheet along the folding and telescopic direction. Widely used in instrumentation, its main purpose is to be used as a measuring element of a pressure measuring instrument to convert pressure into displacement or force. Ordinary products have thin tube walls and high sensitivity, and the measurement range is tens of Pa to tens of MPa. Its open end is fixed, and the sealing end is in a free state, which is increased by using an auxiliary coil spring or reed. When working, it extends along the length of the pipeline under the action of internal pressure, so that the movable end has a certain relationship with the pressure displacement. The movable end drives the pointer to directly indicate the pressure. In addition, you also need to know that this valve bellows is usually combined with a displacement sensor to form a pressure sensor whose output is electricity, and sometimes used as an isolation element. Because its stretching requires a large volume change, its response speed is lower than that of the Bourdon tube.

　　Valve bellowsSuitable for measuring low pressure. Valve bellows are widely used in petrochemical, instrumentation, aerospace, chemical, electric power, cement, metallurgy and other industries. Bellows made of plastic and other materials play an irreplaceable role in the fields of medium transmission, power threading, machine tools, home appliances and so on. In short, it is a pressure measuring elastic element in a pressure measuring instrument. The valve bellows is a cylindrical thin-walled corrugated shell with a plurality of transverse corrugations. Bellows are elastic and can be displaced under pressure, axial force, lateral force or bending moment. It can be widely used in instrumentation, and its main purpose is to be used as a measuring element of a pressure measuring instrument to convert pressure into displacement or force. The bellows wall is thinner, the sensitivity is higher, and the measurement range is from tens of Pa to tens of MPa. In addition, this product can also be used as a sealing isolation element to separate the two media or prevent harmful fluids from entering the measuring part of the device. With the valve bellows can naturally be used as a compensation element, using its volume variability to compensate for the temperature error of the instrument. Sometimes it is also used as a two-part elastic coupling.

After the introduction of the above content, we also have a further understanding of some of the characteristics of the basic overview of the valve bellows. When I see him again in the future, I will not feel strange, and there will be no frequent problems in the process of using it. Well, that's all for today's content. I believe it will bring more wonderful knowledge points.