Centrifugal pump coupling guard
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This post was last edited by A Le on 2017-5-23 at 15:41. The centrifugal pump is connected using a laminated coupling, and it is equipped with an aluminum alloy cover made of non-sparking material. Its stiffness must be sufficient to withstand a weight of 90 Kg without deformation; moreover, the coupling cover should ensure that the exposed parts of the rotating components are no more than 30 mm in length； I need help – what kind of shield can withstand 90 Kg?
The original poster’s statement differs slightly from the standard meaning. The exact wording in API 610 is “be constructed with sufficient stiffness (rigidity) to withstand a 900 N (200 lbf) static point load in any direction without the guard contacting moving parts;” which can be translated into Chinese as “The guard should possess sufficient stiffness to resist a 900 N (200 lbf) static point load applied from any direction, without the guard coming into contact with moving parts.” At present, the stiffness of most protective guards in use does not meet the requirements, and I believe this is mostly due to insufficient thickness.