Vertical submersible centrifugal pump axial force measuring structure

Abstract

The invention provides a vertical submersible centrifugal pump axial force measuring structure. An axial force measuring bearing seat is arranged below a vertical submersible centrifugal pump wire outlet plate seat, the axial force measuring bearing seat is fixedly connected with the wire outlet plate seat through a bolt, and an upper bearing is installed in a bearing cavity of the axial force measuring bearing seat; and the side surface and the bottom surface of the outer ring of the upper bearing make contact with the force measuring part of the axial force measuring bearing seat, the force measuring part can measure the magnitude of pressure acting on the force measuring part, and therefore the magnitude and change of the upward axial force can be measured in real time in the process of testing or using the vertical submersible centrifugal pump.

Description

technical field [0001] The invention relates to the technical field of centrifugal pumps, in particular to a vertical submersible centrifugal pump axial force measurement structure. 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, at present, in our manufacturing process, we generally use symmetrical arrangement of impellers, setting up balance discs, balance drums, opening balance holes, etc. to eliminate the b...

AI Technical Summary

Problems solved by technology

This method can measure the axial force to a certain extent, but in addition to adding the core load cell, it also needs to add a series of parts, which increases the axial size of the pump, and the lead wires of the load cell need to be connected separately, increasing A lot of manufacturing costs and difficulty in site use and installation

[0004] Authorized announcement number CN209687736U also provides a submersible centrifugal pump technology that can measure axial force. This patented technology avoids the problems of complicated manufacturing and increased difficulty in on-site installation and use of the patented technology of authorized announcement number CN104500413B. However, these two patented technologies must To a certain extent, it can only intuitively measure the downward axial force of the vertical submersible centrifugal pump.

[0005] At present, many vertical submersible centrifugal pumps still have the situation that the magnitude or even direction of the axial force is uncontrollable after the calculation of the empirical formula and the corresponding structural design of the balanced axial force. Axial force and design After the axial force is balanced, the calculated axial force is in the opposite direction, so designing a vertical submersible centrifugal pump that can visually measure and display the upward axial force is very special in the design of vertical submersible centrifugal pumps and research value

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