Pump body V-shaped ruptures: causes and solutions
Vivoil Oleodinamica Vivolo
Vivoil' s values : reliability , flexibility , quality .
Out of nowhere, a pump that had been operating smoothly for a long time suddenly breaks down and, upon inspection, you discover a V-shaped rupture in its body. Why? And how can it be prevented? Let's explore this topic.
What causes the V-shaped rupture?
First and foremost, it's important to note that this type of damage is rare and can be avoided.
Typically, the V-shaped rupture occurs as an anomaly due to excessive pressure on the delivery pipe. Regardless of how robust a pump may be, if it is subjected to excessive loads, it can break.
In fact, the most common cause of pump ruptures is the application of cyclic loads. In such cases, the rupture is linear and appears either in the centerline of the body or on the top side of the threaded holes.
When the rupture takes on a V-shaped form, it indicates that something else went wrong with the broken pump. At Vivoil, we have conducted several FEM simulations to gain insight about this problem.
The analysis revealed that the stress leading to a V-shaped rupture is related to cyclically applied loads on the delivery pipe. The rubber hose, which is curved when mounted, tends to straighten itself during the pressure phase, creating a moment load on the body. This, in turn, can result in a rupture with a distinct V-shaped pattern.
How could you prevent a V-shaped rupture?
Here are some recommendations:
If you require additional information or advice regarding this issue, please do not hesitate to contact us: our Technical Department is available to assist you.
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4 个月I would really like to see more damage patterns and their possible causes. Specially on the bushes/thrust plates and the inside of the bodies.