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Three-hull steam turbine

A technology of steam turbine and shell structure, which is applied in the direction of mechanical equipment, engine components, machines/engines, etc., and can solve problems such as the increase in temperature difference of steam turbines

Inactive Publication Date: 2016-06-08
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, it is to be taken into account that when nickel-based materials are applied, the temperature difference between the inlet and outlet of the steam turbine increases

Method used

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  • Three-hull steam turbine
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Embodiment Construction

[0023] The steam turbine 1 includes an outer casing 2 , an inner inner casing 3 , an outer inner casing 4 , and a rotatably mounted rotor 5 . The rotor 5 is mounted rotatably about an axis of rotation 6 . The outer housing 2 is composed of an upper part and a lower part, wherein in the plane of the drawing the upper part is shown above the axis of rotation 6 and the lower part is shown below the axis of rotation 6 . Both the inner inner housing 3 and the outer inner housing 4 also have an upper part and a lower part which, as shown in the outer housing 2, are arranged above the axis of rotation 6 and under. Therefore, the inner inner housing 3 , the outer inner housing 4 and the outer housing 2 each have horizontal junctions.

[0024] In operation, medium-pressure steam flows into the medium-pressure inflow region 7 . The medium-pressure steam then flows along a first flow direction 9 through a blade set 8 , not shown in detail, which comprises guide blades and rotor blades...

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PUM

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Abstract

The turbomachine (1) has an outer housing (2) into which inner housing is provided. The inner housing comprising an inner structure (3) and outer structure (4) that are provided around a rotor (5), such that inner structure is made of a higher-quality material than that of outer structure. A medium-pressure inflow generating unit (7) is provided in outer structure of inner housing for generating flow of medium-pressure stream (18), such that flow direction of medium-pressure stream is same as that of high-pressure stream (19).

Description

technical field [0001] The invention relates to a steam turbine comprising a rotor rotatably carried about an axis of rotation, an inner inner casing arranged radially around the rotor and an outer inner casing, wherein the surrounding The inner inner housing and the outer inner housing are provided with an outer housing, wherein the steam turbine has a first flow section for medium-pressure steam and a second flow section for low-pressure steam, wherein the second flow The portion is oriented in the same direction as the first flow portion. Background technique [0002] Steam turbines generally have a rotatably mounted rotor and a housing arranged around the rotor. A flow channel is formed between the rotor and the inner housing. The casing in a steam turbine must be able to fulfill several functions. On the one hand, the guide vanes are arranged in the flow channels on the housing, and on the other hand, the inner housing must withstand the pressure and temperature of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D25/26F01D25/14
CPCF01D25/26F01D25/14F05D2220/72
Inventor 托比亚斯·霍根克里斯托夫·克斯特纳
Owner SIEMENS AG