How to replace the Collector Ring of Turbine Generator

In June, one client purchased the collector ring of a 7MW generator and wanted to replace it. Can he replace it himself? The reason user think this way is that we supplied product with replacement solutions. After receiving the email from the user, we responded quickly, please arrange professional technicians to replace the collector ring. This work is not as simple as disassembling and assembling according to the solution.

The first things that need to be prepared in advance are:

1. The steam turbine has been opened and the rotor of the steam turbine has been hoisted away;

2. The generator rotor has been pulled out safely;

3. Place the generator rotor on the roller bracket so that the rotor can rotate;

After the above conditions are met, our professional technicians will perform the following work:

1. Use a professional wrench to remove the large lock nut at the end of the coupling. The estimated finish time is 1 day;

2. With the cooperation of two professional technicians, the coupling and the collector rings at both ends are disassembled through the heating process, and the estimated finish time is 1 day;

3. On-site replacement of new collector rings, with adjustment modules, and re-installation of couplings, the estimated finish time is 1 day;

4. According to the guidance of the technician, put the generator rotor back, and the technician will correct the coupling. The estimated working time is 2-3 days;

5. With the cooperation of on-site operators, the steam turbine has the conditions for running, and the generator technicians adjust the collection ring on site, and the estimated working time is 1-2 days;

Therefore, even if there are personnel with experience in operation and maintenance on site, referring to the replacement solution, without the professional technicians of the generator manufacturer, the replacement of the collection ring cannot be completed alone. In particular, the step of calibrating the coupling is very critical. It must be operated or helped by the professional engineers of the manufacturer to meet the standard requirements.