Development of a unified line of booster compressor units for combined-cycle power plants

Abstract

In a period from 2000 till 2020, a program of power industry modernization through Capacity Supply Agreements (DPM program) was implemented in Russia. Within the DPM program, more than a hundred power facilities were put in operation, including foreign-made equipment and equipment partly localized in Russia.

Since the foreign companies left the Russian market, an actual state target is now to localize the main and auxiliary equipment for combined-cycle power plants as well as to replace missing manufacturing technologies for manufacture of new apparatuses and spare parts.

Hundreds of foreign-made compressors are currently in operation as a part of booster compressor units for combined-cycle power plants. In this context, Nevskiy Zavod JSC has developed a line of booster compressor units of its own with a capacity up to 10 MW to replace the foreign equipment.

Booster compressor units are developed based on high-efficiency centrifugal compressors (CECO) in single- and double-section design. CECOs are made with a forged barrel type casing and equipped with dry-running gas seals that include buffer and separation gas systems as well as gas leaking control system. CECOs are also equipped with sliding bearings with an antifriction polymeric composite coating instead of traditionally used babbit B-83, which improves the operational properties significantly.

The main advantages of the booster compressor units produced by Nevskiy Zavod JSC are 100% implementation of domestic components and materials as well as use of unified flow path components, bearings and sealing units, increased polytropic efficienсу, complete technical service and a possibility of usage for combined-cycle power plants equipped with foreign gas turbines of different manufacturers.