General centering device of small horizontal centrifugal pump

Abstract

The invention belongs to the technical field of nuclear power station rotating equipment maintenance engineering, and in particular, relates to a general centering device of a small horizontal centrifugal pump. A pump side backrest wheel is mounted on the left side of a coupling; and a motor side backrest wheel is mounted on the right side of the coupling. A fixture is fixedly mounted on the coupling through a stud, and is positioned on the right side of the motor side backrest wheel. A second fixed plate is fixedly connected with the top of the fixture through a screw; and a first fixed plateis fixedly connected with a meter frame through a screw. The second fixed plate is fixedly connected with a second connecting rod; and the first fixed plate is fixedly connected with a first connecting rod. The first connecting rod is inserted in the second connecting rod; and the first connecting rod and the second connecting rod are fixed in a proper position through a jackscrew. A dial indicator is mounted on the meter frame for centering of a small horizontal pump. The device is simple in structure and convenient to use, and solves the centering problems of small horizontal pumps with different types in power plants.

Description

technical field [0001] The invention belongs to the technical field of overhaul engineering for nuclear power plant rotating equipment, and in particular relates to a general centering device for a small horizontal centrifugal pump. Background technique [0002] Couplings, also known as couplings, are mechanical components used to firmly connect the driving shaft and driven shaft in different mechanisms to rotate together and transmit motion and torque. It is often composed of two halves, respectively connected by keys or tight fits, fastened at the ends of the two shafts, and then connected by some means. The coupling can also compensate for the offset between the motor shaft and the pump shaft due to inaccurate manufacturing and installation, deformation during work, and thermal expansion (including axial offset, radial offset, angular offset) and Moderate impact and absorb vibration. The rotation centers of the two shafts connected by the coupling of the pump and the mo...

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Problems solved by technology

[0004] In the past, the magnetic gauge base used in the alignment of the shaft coupling of small horizontal centrifugal pumps was not in reliable contact with the arc surface of the backrest wheel shaft, which easily caused the pointer to shake, resulting in untrue data; the models of small horizontal centrifugal pumps are different, and the coupling The diameters and lengths of the couplings are also different. Different alignment tools need to be selected for different types of couplings, and they all need to be made by themselves. Maintenance personnel need to know clearly what to choose for different types of small horizontal centrifugal pumps. Alignment tool, resulting in poor maintenance process

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