Direct-connection power generation equipment for natural gas radial turbine expansion machine

Abstract

The invention provides direct-connection power generation equipment for a natural gas radial turbine expansion machine, and belongs to the technical field of power generation of the radial turbine expansion machine. The natural gas radial turbine expansion machine comprises a shape ring, an impeller, a nozzle ring, a volute and a power generator main shaft. The power generator main shaft penetrates through the volute and is rotationally connected with the volute, and a gas inlet and a gas outlet which are in dry gas seal are formed in the side wall of the volute, the shape ring is installed onthe inner wall of the volute, the nozzle ring is arranged on the inner wall of the volute, and the impeller is fixedly installed at the input end of the power generator main shaft through a stay bolt. A high-speed permanent magnet synchronous generator comprises a power generator stator assembly, the power generator main shaft and a power generator shell, the power generator stator assembly is fixedly installed on the power generator shell, and the power generator main shaft is rotationally connected with the power generator shell through a first magnetic suspension bearing and a second magnetic suspension bearing. The volute is fixedly connected with the power generator shell. A speed reduction box device is omitted, the occupied area is small, and the equipment is good in performance, high in unit efficiency and small in loss.

Description

technical field [0001] The invention relates to a power generation equipment for a direct-connected natural gas centripetal turbo expander, which belongs to the technical field of centripetal turbo expander power generation. Background technique [0002] The pressure regulation process of the natural gas gate station is to directly reduce the pressure through the valve group of the pressure regulating skid. During the natural gas pressure reduction process, a large pressure drop will be generated, and a large amount of pressure energy will be released. At the same time, the temperature will drop significantly after the pressure reduction, resulting in a large amount of cold can. However, the pressure-reducing process using traditional throttle valves and other pressure-regulating facilities cannot realize energy recovery during the decompression process of natural gas, because this decompression process uses the principle of throttling to throttle and reduce pressure. middl...

AI Technical Summary

Problems solved by technology

Traditional high-power turboexpander generator sets usually connect the expander to the generator through a reduction box device, which will reduce the efficiency of the unit. Therefore, providing high-power magnetic levitation high-speed natural gas centrifugal turboexpander power generation equipment Has broad application prospects

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