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Steam turbine

A technology of steam turbines and steam turbines, applied in steam engine devices, mechanical equipment, machines/engines, etc.

Active Publication Date: 2009-02-18
SIEMENS ENERGY GLOBAL GMBH CO & KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Steam turbines with traditional structures cannot fully meet these requirements

Method used

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  • Steam turbine
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Embodiment Construction

[0017] FIG. 1 shows a steam turbine with a casing 3 and a rotor 5 in longitudinal section. The steam turbine 1 has a first stage part 7 and a second stage part 9 .

[0018] Each of said stages 7 and 9 consists of a set of working blades 11 fixed to the rotor 5 and a set of guide vanes 13 which are usually fixed to the casing 3 of the steam turbine 1 by means of guide vane supports . For the sake of clarity, not all rotor blades and not all guide blades are assigned reference numerals in FIG. 1 . A first adjusting wheel 15 is attached to the rotor 5 upstream of the first stage part 7 in the direction of flow. The rotor blades of the adjustment wheel 15 , which are not specifically shown in FIG. 1 , are designed as impulsive blades.

[0019] In the immediate vicinity of the first adjusting wheel 15 there is a nozzle ring 17 which has a plurality of nozzles 19 distributed along the circumference. The nozzle ring 17 is supplied with steam via a live steam line 21 with partial ...

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Abstract

The invention relates to a multi-stage steam turbine (1), which has a second MD regulating wheel (27) after its first stage part (7), to which the MD regulating wheel can be applied during overload operation Additional steam (31). The steam turbine (1) according to the invention can be operated with a stable and high efficiency not only in the partial load range but also in the rated operating point and in high overload situations.

Description

technical field [0001] The invention relates to a steam turbine having a plurality of stage sections and a device for power regulation of the steam turbine arranged upstream of the first stage section. Background technique [0002] A steam turbine should be able to operate reliably over the largest possible power range and at a constant high efficiency. Steam turbines with traditional structures cannot fully meet these requirements. [0003] A steam turbine of the above-mentioned type is disclosed by US-B1-6308407. Contents of the invention [0004] The technical problem addressed by the present invention is to provide a steam turbine which can be operated with good efficiency not only in standard operating conditions but also in the partial load range which is operated at a power significantly lower than the rated power. In addition, the steam turbine of the present invention also has good efficiency during overload operation. [0005] The above-mentioned technical pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01K7/18F01K7/20
CPCF01K7/18F01K7/20
Inventor 奥拉夫·阿恩特尤多·蒂尔克
Owner SIEMENS ENERGY GLOBAL GMBH CO & KG