High reliability generator air gap baffle plate quick dismounting device

Abstract

The invention relates to a high reliability generator air gap baffle plate quick dismounting device for dismounting and installing a generator air gap baffle plate. The air gap baffle plate is equipped with a bolt (3) and a nut (4). The bolt (3) is a double-head hollow bolt with an internal thread. The device is characterized in that the tool comprises a fixed rod (1) and a sleeve (2), one end of the fixed rod (1) is provided with an external thread (11) which is matched with the internal thread of the bolt (3), the sleeve (2) is provided with a nut sleeve (21), and the inner wall shape of the nut sleeve (21) is matched with the outer wall of the nut (4). Compared with prior art, through the use of the sleeve and a fixed rod, the falling risk of the bolt and the nut is avoided, the disassembly and assembly speeds are fast, the outage time of the generator is short, the installation tightness is good, the reliability is high, the weight is light, and the operation is convenient.

Description

technical field [0001] The invention relates to a hand tool used for assembly and disassembly, in particular to a high-reliability generator air gap baffle quick assembly and disassembly device. Background technique [0002] In the generator maintenance process, it is necessary to remove the air gap baffle bolts on both sides of the steam excitation first, take out the generator rotor, put the generator rotor back after the maintenance, and then reinstall the bolts. The generator air gap baffle is usually equipped with hollow stud bolts. When installing, first screw one end of the stud bolt into the bolt hole on the air gap baffle, and then tighten the other end with a nut. The order of disassembly is reversed. [0003] Due to the special design of the inner and outer end covers and wind guide rings on both sides of the steam excitation of the generator, the gap between the stator and the rotor of the generator is small, and the position of the stator embedded in the air gap...

AI Technical Summary

Problems solved by technology

[0003] Due to the special design of the inner and outer end covers and wind guide rings on both sides of the steam excitation of the generator, the gap between the stator and the rotor of the generator is small, and the position of the stator embedded in the air gap baffle is relatively deep, and the space available for the operator is narrow, resulting in the original manufacturer equipped There are certain hidden dangers in the use of dismantling tools. When dismantling the bolts, there is a problem of bolts falling off; especially after the generator rotor enters, when the bolts of the air gap baffle are installed, it is required to be reinstalled successfully at one time, and no bolts are allowed to fall off. If there is an abnormality after the installation is completed, such as the bolts are not fastened securely or the bolts fall into the stator bore by mistake, there will be a major safety hazard, and it will even greatly reduce the maintenance effect of the generator and endanger the safe operation of the unit in the future.

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