Turbine generator exciter coupling reaming device and operation method

Abstract

The invention discloses a turbine generator exciter coupling reaming device and an operation method, and relates to the technical field of coupling reaming. The turbine generator exciter coupling reaming device comprises a device body installed on one side of an exciter rotor, wherein the device body comprises a coupling flange, a reamer box body, a feeding plate, a feeding lead screw, a cutter row, a six-edge reamer and a stress application rod. According to the invention, the device is installed on one side of the exciter rotor, reaming work is conducted on a generator and exciter coupling flange, and the problem that electric reaming equipment is large in occupied space and cannot be achieved is solved; and the novel device for reaming a turbine generator rotor and an exciter rotor coupling is created, the major technical problem that the generator and exciter coupling cannot be reamed and spare parts cannot be replaced is solved, meanwhile, six-edge reamers of different specifications can be replaced during use, the work is repeated, then reaming work of the generator and the exciter coupling flange holes is achieved, the operation is easy, reaming is rapid and convenient, and the device is suitable for application and popularization.

Description

technical field [0001] The invention relates to the technical field of counter-wheel reaming, in particular to a counter-wheel reaming device and an operation method for a turbogenerator exciter. Background technique [0002] Under normal operating conditions of the generator, the excitation system should maintain the terminal voltage of the generator (or the voltage of the high voltage side of the step-up transformer) at a given level. When the power system is in normal operation, the load always fluctuates frequently, and the power of the synchronous generator will change accordingly. The machine terminal voltage will change with the change of load current. In order to ensure a constant voltage at the generator terminal, the excitation current of the generator must be adjusted accordingly with the load current of the generator. [0003] At present, large-scale power stations replace the exciter with a new one due to the damage of the exciter. Because the position of the ...

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Problems solved by technology

[0003] At present, large-scale power stations replace the exciter with a new one due to the damage of the exciter. Because the position of the new exciter and the flange hole of the generator rotor are inconsistent, it is impossible to install the torsion bolts, so it is necessary to ream the exciter and the pair of generator wheels. Work with new torque bolts

[0004] From the above, due to the replacement of the exciter in a large power station, it is impossible to install the torsion bolts on the exciter and the rotor of the generator rotor. Therefore, we have designed a reaming device for the exciter of the turbogenerator. and methods of operation to solve the above problems

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