Singe-stage radial turbine power generating system capable of balancing axial force through air bearing

Abstract

The invention discloses a singe-stage radial turbine power generating system capable of balancing axial force through an air bearing. The singe-stage radial turbine power generating system comprises arotating shaft, the air bearing, a high-speed permanent magnet power generator and a radial turbine. The high-speed permanent magnet power generator and the radial turbine are connected with the rotating shaft. The air bearing is arranged outside the rotating shaft. The air bearing comprises a balancing plate, a bearing shell, an air bearing wall and a balancing air wall. The balancing plate sleeves the rotating shaft. The bearing shell is arranged outside the rotating shaft and the balancing plate. The air bearing wall and the balancing air wall are arranged on the inner wall of the bearingshell. The air bearing wall faces the rotating shaft. The balancing air wall faces the balancing plate. An air passageway is formed in the bearing shell and communicates with the air bearing wall andthe balancing air wall. The bearing shell is provided with an exhaust hole. The air bearing can balance the axial force in the high-speed-operating turbine power generating system, and the system canreach the high rotating speed and is high in power generating efficiency, simple in structure, light and flexible.

Description

Technical field [0001] The invention relates to an air bearing, which is applied to a high-speed radial turbine direct-drive high-speed generator system. Background technique [0002] In the context of energy saving and emission reduction, centralized heating is gradually replacing the decentralized heating of small boilers. However, in centralized heating, a heating pipe network often directly supplies heat to multiple heat users with different needs. At times, a large number of temperature and pressure reducing valves are often deployed on each user side, but this will inevitably produce energy waste, which is in contradiction with the requirements of energy saving and emission reduction in the new era. The residual pressure data utilization technology can solve this problem well. The traditional use of residual pressure resources uses axial flow turbines, such as steam turbines, but the use of small-capacity residual pressure resources is inefficient. Radial turbo expanders ...

AI Technical Summary

Problems solved by technology

In order to achieve higher efficiency, low-power radial turbines often have higher speeds. Since the user side often has great restrictions on space and flexibility, traditional power generation equipment with reduction gear boxes and oil supply systems do not too applicable

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