Explosion-proof submersible centrifugal pump with axial force real-time measurement function

Abstract

The invention provides an explosion-proof submersible centrifugal pump with an axial force real-time measurement function. A structural member, namely an axial force measurement element, is additionally installed between an oil chamber and a lower bearing of an original structure foundation; the lower surface of the axial force measurement element is fixed to the upper surface of an oil chamber cover of the oil chamber through eight bolts; and the upper surface of the axial force measurement element, namely the pressure bearing surface, can measure the magnitude of the pressure acting thereon,and can measure the magnitude and variation of the axial force in real time during testing or use of the pump.

Description

technical field [0001] The invention relates to the technical field of centrifugal pumps, in particular to an explosion-proof submersible centrifugal pump with real-time axial force measurement. Background technique [0002] Axial force has always been an unavoidable force generated during the use of centrifugal pumps. This force will pull the movement of the rotor shaft. Therefore, in the process of designing and manufacturing centrifugal pumps, efforts are made to eliminate or balance axial force; There are many reasons, such as 1. The axial force caused by the asymmetry of the front and rear cover plates of the impeller; 2. The axial force caused by structural factors such as pillow block and shaft end; 3. The axial force caused by the weight of the rotor, etc. With the development of centrifugal pumps, we generally use symmetrical arrangement of impellers, setting balance discs, balance drums, and opening balance holes to eliminate the balance axial force in the manufact...

AI Technical Summary

Problems solved by technology

With the development of centrifugal pumps, we generally use symmetrical arrangement of impellers, setting balance discs, balance drums, and opening balance holes to eliminate the balance axial force in the manufacturing process. At the same time, some bearings with better quality are used to bear the unbalanced Axial force; in the process of balancing and eliminating the above-mentioned axial force, we all use empirical formulas to estimate, but the empirical formula cannot calculate the results very accurately. After some uncontrollable and unknown situations, even the actual axial force will appear. The axial force is in the opposite direction to the calculated axial force, so it is very valuable to design a centrifugal pump that can visually measure and display the axial force

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