Closed fixed type annular turbojet steam wheel

Abstract

The invention relates to a closed fixed type annular turbojet steam wheel which comprises a shell, a main shaft, a sealed jet cavity, a sealing ring piece and a jet ring, the main shaft is rotationally installed in the shell in the axial direction of the shell, the sealed jet cavity in linkage with the shell is installed on the main shaft in the shell, the jet ring is installed in the sealed jet cavity in a wrapped mode, the sealing ring piece rotating relative to the sealed jet cavity is installed on the outer side of the sealed jet cavity, a recoverer and a flow divider are arranged at the upper end and the lower end of the sealed jet cavity in the shell respectively, an air inlet pipe extending out of the shell is arranged on the flow divider, the flow divider is communicated with the interior of the jet ring through an air inlet branch pipe, the jet ring is communicated with the recoverer through an exhaust branch pipe, and an air outlet pipe extending out of the shell is arranged on the recoverer. According to the closed fixed type annular turbojet steam wheel, steam loss in the jet process is effectively reduced, and the efficiency of steam acting is improved; and meanwhile, corrosion of steam to parts is avoided, and the service life of the steam wheel is prolonged.

Description

technical field [0001] The invention belongs to the field of engines, and relates to a steam turbine, in particular to a closed and fixed annular turbojet steam turbine. Background technique [0002] A steam turbine is a rotary prime mover that uses steam or other airflow as a power source. It has the advantages of high power, simple structure, few wearing parts, low vibration, and low noise. The steam wheel is the rotating work part of the steam turbine. It is mainly composed of steam (air flow) nozzles (also called stationary blades) and moving blades (also called blades). The nozzles are fixed on the casing or the diaphragm, and the moving blades fixed on the roulette. The working principle of the traditional steam turbine is: the steam (airflow) is connected to the nozzle of the steam wheel, and the steam is sprayed out through the nozzle (stationary vane) to act on the impeller (blade) fixed on the wheel disk, and the impeller drives the wheel disk to rotate, rotate T...

AI Technical Summary

Problems solved by technology

[0003] Traditional steam turbine steam is sprayed in an open manner. After spraying, the steam will be lost, which not only causes waste of steam, but also causes the steam to drift everywhere in the steam turbine, which easily causes corrosion of parts and affects its service life.

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