Auxiliary assembling device and method for water turbine shaft flange and generator shaft flange

Abstract

The invention relates to an auxiliary assembling device and method for a water turbine shaft flange and a generator shaft flange, and belongs to the field of mechanical connecting pieces. The auxiliary assembling device and method aim at solving the problem existing in connection of the water turbine shaft flange and the generator shaft flange. Two arc-shaped thrust plates of an auxiliary connecting device are symmetrically arranged below the water turbine shaft flange, and a screw jack is placed between each arc-shaped thrust plate and the water turbine shaft flange; the plane where the two arc-shaped thrust plates are located is parallel to the two flanges; each arc-shaped thrust plate is provided with two mounting holes in the circumferential direction, the mounting holes correspond towater turbine shaft flange holes in an up-down manner, and the odd number of water turbine shaft flange holes are formed between the two water turbine shaft flange holes corresponding to the two mounting holes; and double-thread screws sequentially penetrate through the mounting holes of the arc-shaped thrust plates, the water turbine shaft flange holes and the generator shaft flange holes from bottom to top, relative positions are fixed through nuts and annular gaskets, and each of the upper surface of the generator shaft flange and the lower surface of the water turbine shaft flange is provided with one annular gasket.

Description

technical field [0001] The invention relates to a flange connection and decomposition auxiliary device, which belongs to the field of mechanical connectors. Background technique [0002] Generally, the connection and separation between the shaft flange of small and medium-sized vertical turbines and the generator shaft is carried out through the process of symmetrically tightening and loosening the coupling bolts and nuts, which is inefficient and prone to asynchronous movement of the nuts, twisting between the upper and lower flanges, Unbalanced phenomenon, the coupling bolts of the two flanges are unevenly stressed, which can easily lead to broken threads of the bolts, making the bolts and nuts unable to move forward and backward, so the nuts and bolt threads have to be damaged. It is also easy to appear that the center of gravity of the turbine runner deviates from the tilt, the lower crown of the turbine contacts and collides with the lower labyrinth ring, and the turbin...

AI Technical Summary

Problems solved by technology

[0002] Generally, the connection and separation between the shaft flange of small and medium-sized vertical turbines and the generator shaft is carried out through the process of symmetrically tightening and loosening the coupling bolts and nuts, which is inefficient and prone to asynchronous movement of the nuts, twisting between the upper and lower flanges, Unbalanced phenomenon, the coupling bolts of the two flanges are unevenly stressed, which can easily lead to broken threads of the bolts, making the bolts and nuts unable to move forward and backward, so the nuts and bolt threads have to be damaged

It is also easy to appear that the center of gravity of the turbine runner deviates from the tilt, the lower crown of the turbine contacts and collides with the lower labyrinth ring, and the turbine shaft cannot be up and down. At the same time, it will damage the positioning seam in the generator shaft flange

If the bolt tensioner is used, the cost is high and the operation is cumbersome

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