Mechanical seal
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What is the compression amount of the large spring in the mechanical seal? How to measure it? Can you teach me one?
There must be a limit for this within the sealed chamber, right?
The work compression ratio is generally 70% to 90% of the total compression ratio, with around 80% being the most common value. When making measurements, a reference plane is usually selected first – typically the joint surface of the stationary components. Then, the distances from the end surfaces of the static and dynamic friction pairs to this reference plane are measured separately; the difference between these values represents the working compression amount. Before conducting the measurements, it is necessary to understand the structure of the seal mechanism as well as its relative positions
It is best to calculate the elasticity and select a reasonable spring specific pressure!
There are standards for all of this; it’s clear that you’re not a standard-compliant manufacturer – you’re used to this kind of design approach……
(Free height – Compression height) x (50%–90%) = Compression amount; 50–70% for single springs, 70–90% for small springs