People widely use Rubber hose in conveying systems for pipelines and bends and in scenarios where a degree of flexibility is necessary. Its specific properties also create it perfect for use in systems where the material being conveyed is flaky, coarse, or cohesive. The flexible rubber hose‘s natural flexibility makes it ideal for vacuum off-loading applications, mobile transmission systems, and joining pipeline sections in situations where ordinary pipeline bends do not match the geometry necessary.
Erosive Wear And The Particle Degradation
The rubber hose can withstand erosive wear better than steel pipeline in definite situations. However, the hardness of the surface material is usually lower than that of alternative metal surfaces. Of the particles impacting against the surface, it originates its erosive wear resistance from the fact that it can absorb much of the energy of impact by resilience. By a similar mechanism, the impact energy of brittle materials can also grip, so particle degradation may also reduce appreciably.
Issues of erosive wear and particle degradation are particularly in high-velocity dilute stage conveying. Unfortunately, the compression drop for gas flows by flexible rubber hose also increases with velocity and more than for steel pipeline. In tests with cement, the author verified both steel and rubber hose and found that for low-velocity opaque phase conveying, there was a difference in pressure drop between the steel and rubber hose. According to the airflow rate, and it increases the velocity; however, the pressure drop by the hose increased significantly.
Comparison Of Pressure Drop Data For Both Steel And Rubber Hose Pipelines
It repeated the program with barite, and you obtain the same set of results. It may suspect that the coefficient of restitution among the particles and the pipeline wall plays a vital part. Rubber is resilient, can have a lower coefficient of compensation for impacting particles than steel. If the flexible rubber absorbs more of the energy of impact of the particles than steel, a more pressure drop, caused by having to reaccelerate from a lower velocity, will outcome in the rubber pipeline. The pressure drop for flow by the rubber hose is more significant than the steel pipeline. As pressure drop increases with the square of velocity, it grows with the rise in conveying air velocity.
Carrying Cohesive Materials
In steel pipelines, cohesive and gummy materials lean-to adhere to the pipeline wall and procedure a coating. The coating can slowly increase in thickness until it forms up to such an extent that it outcomes in the pipeline being blocked. It is mainly the case with ultra-fine powders and materials with stale content or other substances that create the material sticky.
If they convey these materials through a thin-walled rubber hose, the natural drive and flexing of the hose, ensuing from the pulsations of the air under pressure and the material transmission through the pipeline is usually sufficient to dislodge any material that has an affinity to adhere to the pipeline wall. The channel wants to be supported to be free to transfer but has enough support to maintain sensibly straight.