The appearance of rubber pneumatic butterfly valve in train operation
At the beginning, the train was powered by steam. With the development of science and technology, today's trains are electric. After the development of generation after generation, they have the usual appearance of trains! Now there are also rubber pneumatic butterfly valves in trains. With the development of science and technology, the train has become a train, and the speed of operation is increasing, and the noise and vibration are also increasing. So we created composite materials that separate rubber from metal, and one of these composite materials is rubber shock absorber.
Since the development of rubber shock absorber, there has been no excessive vibration or noise when the train is running. Even though the train is running faster and faster in the past, with the help of rubber shock absorber and other rubber metal products, people's warmth on the train can once be satisfied! These matched parts are used for traction, drive, connection, support and other parts, which play a role in reducing vibration and noise, and also play a role in the weight of the flexible support locomotive installation itself, that is, adhere to the relative position of the installation under the action of external forces, and reduce fatigue and damage caused by rigid connection and support. In this way, the stability of the train during driving can be better guaranteed, and the vibration can be greatly reduced.
With the development of science and technology, the pursuit of speed has been unstoppable, so what we need to do is to increase the speed and create a rubber shock absorber that can reduce stronger vibration and greater noise!

Stainless steel pneumatic butterfly valve line will present six conditions of scrapping
As we all know, the stainless steel pneumatic butterfly valve has strong corrosion resistance and long service life. However, in the process of long-term use, due to the problems of the product itself and the use, the stainless steel pneumatic butterfly valve will reach the invalid specification early. In order to help us identify the obsolete products, today's stainless steel pneumatic butterfly valve manufacturer summarizes the following:
1. Weld cracking. Most of the flexible bellows sections in stainless steel pneumatic butterfly valves use longitudinal seam welded pipes. Because of the quality defect of longitudinal seam welding itself, the strength of the pipe is not good, leading to cracking and damage at the weld. This damage belongs to the quality problem of longitudinal weld of bellows, so the control of weld quality should be strengthened.
2. Explosion occurs if pressure is not applied. Due to the high pressure and temperature of the conveying medium, the pressure of the bellows is not good and the slope burst occurs. This kind of damage is caused by design and type selection error, so the selection should be stopped strictly according to the hose design and type selection specification, and the parameters of corrugated pipe and net sleeve should be confirmed.
3. Fatigue and damage. Under the dynamic working condition, the pneumatic butterfly valve is often damaged by fatigue cracks when subjected to cyclic load. In order to extend the service life, it is necessary to ensure that the hose is designed and selected correctly.
4. The steel wire mesh sleeve of stainless steel pneumatic butterfly valve is pulled off. Due to the reason of welding quality, the hose, ring and wire mesh sleeve in the process of trinity welding constitute a part of the steel wire's faulty welding (over burning or final welding).
5. The wire mesh is pulled off. During the installation of the hose, due to improper installation or high pressure, the hose will be stretched and distorted. When the stress caused by stretching or distortion exceeds the ultimate strength of the hose wire mesh sleeve, the mesh sleeve at the trinity welding part of the hose or the mesh sleeve at other parts will be pulled off, and then the hose drum will be stretched and damaged, causing media disclosure Therefore, it is required that the design and model selection shall be accurate and the installation shall be correct.
6. The welding quality defect of stainless steel pneumatic butterfly valve connector (internal connection part) constitutes the failure of the hose. When the hose body is welded with the hose connector, when the operation is improper, welding defects will occur, and these defects are difficult to find during the pressure test. When the pneumatic butterfly valve is connected to the medium pipeline, it will crack or break at the defect due to fatigue and other reasons after a long time of use, and finally form the medium disclosure of the delivery pipeline.
Once the stainless steel pneumatic butterfly valve presents the above six situations, it is not far from being obsolete. Based on these possible situations, it can also help us find out the cause of the failure of the stainless steel pneumatic butterfly valve, so as to solve the problem from the source and make the stainless steel pneumatic butterfly valve reach the original service life.