Vertical multi-level steam turbine

Abstract

The invention discloses a vertical multi-level steam turbine, and belongs to the field of ship machines. The vertical multi-level steam turbine comprises an oil tank, a gear speed changing box and a turbine box. The turbine box is arranged on the upper side of the gear speed changing box, and the oil tank is arranged on the lower side of the gear speed changing box. The gear speed changing box comprises a gear speed changing box body, an input shaft and an output shaft, wherein the input shaft and the output shaft are arranged in the gear speed changing box body and are in transmission connection. The turbine box comprises an annular steam inlet cylinder, a turbine box body, an annular exhaust cylinder and a turbine shaft. A plurality of impellers are arranged on the turbine shaft, each impeller is provided with a movable blade grid, the annular steam inlet cylinder is arranged at the top end of the turbine box body, nozzles of the annular steam inlet cylinder are right opposite to the movable blade grids, and therefore steam sprayed out of the nozzles can transmit power to the turbine shaft through the multiple impellers, the turbine shaft is driven to rotate, the steam utilization rate of the steam turbine is higher accordingly, and higher power can be generated for driving a cargo oil pump.

Description

technical field [0001] The invention relates to the field of marine machinery, in particular to a vertical multistage steam turbine. Background technique [0002] A steam turbine is a device used to convert the internal energy in steam into mechanical energy to drive an alternator, pump or other rotating machinery. It is widely used in the field of marine machinery, for example, on large oil tankers, steam turbines are often used in cargo oil systems. [0003] The steam turbine is usually installed in the engine room, and the cargo oil pump is installed in the pump room. The cargo oil pump is driven by connecting the rotating shaft of the steam turbine with the cargo oil pump. Since the transmission shaft of the cargo oil pump is arranged vertically, the traditional steam turbine The flat turbines are all horizontal structures, and the rotating shaft between them is at an angle of 90°. In order to facilitate the connection between the steam turbine and the cargo oil pump, a...

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Problems solved by technology

[0004] In order to solve the problem of low steam utilization rate of the existing vertical steam turbine, the embodiment of the present invention provides a vertical multi-stage steam turbine

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