Turbine rotor arrangement system

Abstract

The invention relates to the technical field of turbine rotating machinery, and discloses a turbine rotor arrangement system. The turbine rotor arrangement system comprises a turbine cylinder, a rotating shaft, a boss and a first air inlet, the rotating shaft is arranged in the turbine cylinder, and the rotating shaft is sequentially provided with a first low-temperature area, a high-temperature area and a second low-temperature area in the axial direction of the rotating shaft; the boss is arranged in the first low-temperature area of the rotating shaft, and the periphery of the boss is sleeved with a first dry gas seal; and the first air inlet is formed in the side, close to the high-temperature area, of the boss and used for communicating with a cooling air source. According to the turbine rotor arrangement system, a balance disc does not need to be arranged, through-flow and axial thrust generated by the sealing teeth are balanced through thrust generated by the differential pressure before and after the boss of the dry gas seal is installed, the overall operation efficiency of a unit is high, the overall span of the rotor is small, and the safety performance and the economic performance of the unit are good.

Description

technical field [0001] The invention relates to the technical field of turbine rotating machinery, in particular to a turbine rotor arrangement system. Background technique [0002] Supercritical carbon dioxide turbine rotors are suitable for power generation equipment. Most of the current balance pistons are placed in the high-temperature section of the turbine. Due to the large air leakage radius, in order to control the air leakage, the length of the balance piston is relatively long, resulting in The high temperature section is too long, which makes the safety performance of the unit lower. There are also a small number of balance pistons that are arranged in the low temperature section, but the existing steam cycle rotor arrangement has a large balance disc length and diameter, resulting in a large overall span of the rotor, which is not conducive to the overall structural design of the unit, making it The safety performance and economic performance are low. Contents...

AI Technical Summary

Problems solved by technology

[0002] Supercritical carbon dioxide turbine rotors are suitable for power generation equipment. Most of the current balance pistons are placed in the high-temperature section of the turbine. Due to the large air leakage radius, in order to control the air leakage, the length of the balance piston is relatively long, resulting in The high temperature section is too long, which makes the safety performance of the unit lower

There are also a small number of balance pistons that are arranged in the low temperature section, but the existing steam cycle rotor arrangement has a large balance disc length and diameter, resulting in a large overall span of the rotor, which is not conducive to the overall structural design of the unit, making it Lower safety performance and economic performance

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