The manufacturer of pneumatic butterfly valve introduces you to the question of spring pneumatic butterfly valve?
The primary school of the pneumatic butterfly valve manufacturer introduced you to the spring pneumatic butterfly valve. Do you know what the spring pneumatic butterfly valve is used for? You may not be so clear, so I want to introduce you to the knowledge about spring pneumatic butterfly valve, so that you can understand these contents more clearly. The contents of pneumatic butterfly valve manufacturer are as follows:
Spring pneumatic butterfly valve is a vibration control device sensitive to displacement response. Spring pneumatic butterfly valve is mainly used for anti vibration of pipelines and equipment in nuclear power plants, thermal power plants, chemical plants, steel plants, etc. It is often used to control the vibration of pipeline system caused by fluid vibration excitation (such as fluid pulsation, two-phase flow, high-speed flow, aeolian shock, etc.). The spring pneumatic butterfly valve can effectively control the vibration and swing of various frequencies, but it limits the normal thermal displacement of the pipeline to a certain extent. The additional force generated by the spring pneumatic butterfly valve on the pipeline shall be fully considered in the design. In the past, the spring shock absorption has a very high technological content, which can apply the technology developed from time to time, so that many projects will be stopped under more satisfactory conditions, so that more equipment can extend the service life in a more stable environment and ensure the safety of application.
The above content is the elementary question that our pneumatic butterfly valve manufacturer introduced you to the spring pneumatic butterfly valve. I believe that after understanding the above content, you have a very good understanding of the spring pneumatic butterfly valve! Thank you very much for your support! We will continue to update more information about pneumatic butterfly valves. Welcome to our website. If you have any unclear information, please contact Songxia Pneumatic Butterfly Valve Co., Ltd., and we will be happy to serve you!

The hose is not suitable for liquid sulfur escort pipeline
The liquid sulfur is transported to the wharf by ship and pumped into the storage tank in the installation area. In order to restrain the shaking of river water and barges, pneumatic butterfly valves are selected for the liquid sulfur escort pipeline between the wharf trestle and the river bank. The pneumatic butterfly valve broke soon after being used, resulting in liquid sulfur leakage.
This is why. Analyzed the reason for the break, stopped communicating with suppliers and manufacturers, and put forward suggestions for improvement.
The design parameters are: the jacket is accompanied by the inner tube of the hose DN125, the outer tube DN200, the length is 10 m, the material is 304 stainless steel, the wall thickness is 0.8 mln, and the design pressure is 1.0 MPa. The application conditions are as follows: intermittent escort of liquid sulfur, working pressure of inner liquid sulfur is 0.6 MPa, and temperature is 135 ℃; The outer steam pressure is 0.5 MPa and the temperature is 140 ℃.
The leaking part was sampled for coloring inspection. It was found that the leaking part was on the first wave crest of the corrugated pipe where the inner hose was close to the pipe joint. The cracks were distributed in a circumferential direction, and the internal and external surface of the cracks were larger than the surface. It can be inferred that the crack extends from inside to outside.
Liquid sulfur has certain acidity. In the process of loading and unloading, liquid sulfur inevitably carries a small amount of water and oxygen, which is acidic after oxidation, so the acidity of liquid sulfur is further increased; On the other hand, the material of large caliber pneumatic butterfly valve was improperly treated in the process of consumption and processing, and the carbides could not be fully dissolved. The material itself had carbides precipitation, which greatly reduced the corrosion resistance of 304 stainless steel itself. Under acidic conditions, first of all, micro electrochemical reactions were made at these locations, showing corrosion.
The fracture is located at the junction of the soft and hard pipes on the upper side of the first wave peak. Because the hose is too long, the curvature at the fracture is too large, and the stress is concentrated. In addition, during the operation, liquid sulfur shall be transported through gaps. When not escorted, stop supplying steam, solidify the liquid sulfur in the hose to fill the hose, so that the hose becomes rigid and can not absorb the stress generated when the barge shakes and moves. Under the combined action of the above two kinds of stresses, the pneumatic butterfly valve is cracked due to stress corrosion. How does the pneumatic butterfly valve change in application