Method of and arrangement for monitoring the condition of a volute casing of a centrifugal pump
AssigneeSulzer Management AG
InventorKalle Tarhonen
Life of this patent
Estimating the term…
Abstract
A method of monitoring the condition of a volute casing of a centrifugal pump, the method includes determining, in a wall of the volute casing, at least one point, which, in view of the material forming the volute casing, is critical to wear, providing, from outside the volute casing, a blind hole in the wall of the volute casing at the at least one point, the blind hole having a depth, receiving information from the blind hole, and taking predetermined actions to replace the volute casing with a new casing after the information indicates the opening of the blind hole into the interior of the volute casing.
Claims18
A method of monitoring a condition of a volute casing of a centrifugal pump, the volute casing comprising an outlet duct with a wall and an outlet opening, a centreline plane, a cutwater tongue, an axis, and a wall having an inner surface defining an interior of the volute casing and an outer surface, the method comprising:
- determining, in the wall of the volute casing, at least one point, which, in view of the material forming the volute casing, is critical to wear;
- providing, from outside the volute casing, a blind hole in the wall of the volute casing at the at least one point, the blind hole having a depth;
- receiving information regarding the blind hole;
- and
- taking predetermined actions to replace the volute casing with a new casing after the information indicates the blind hole opens into the interior of the volute casing.
An arrangement for monitoring a condition of a volute casing of a centrifugal pump, the pump having a volute casing and an axis, the volute casing comprising an outlet duct, an outlet opening, a centreline plane extending at right angles to the axis, a wall having an inner surface defining an interior of the volute casing and an outer surface, and at least one blind hole arranged to extend in a depth in the outer surface of the wall of the volute casing;
- the arrangement comprising:
- at least one blind hole arranged in a position where the principal stress or the abrasion subjected to the volute casing is maximal.
Dependencies are inferred from the claim text.