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Method and device operating system turbine comprising sereral no-load or light-load phases

一种蒸汽轮机、蒸汽的技术，应用在蒸汽机装置、发动机的起动、机械设备等方向，能够解决长起动时间等问题

Inactive Publication Date: 2007-05-30
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to this improper warm-up, a longer start-up time is necessarily involved

Method used

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  • Method and device operating system turbine comprising sereral no-load or light-load phases
  • Method and device operating system turbine comprising sereral no-load or light-load phases
  • Method and device operating system turbine comprising sereral no-load or light-load phases

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Embodiment Construction

[0022] FIG. 1 shows a steam turbine 10 with a high-pressure cylinder 11 and a combined medium-pressure / low-pressure cylinder 12 . The cylinders 11 and 12 are connected together by means of a shaft 13, which drives a generator 14 to generate electric current. The shaft 13 and the generator 14 can be decoupled from each other by means of a device which will not be described in more detail. The steam generator 15 is used to generate steam required for work and during no-load periods. A condenser 16 for condensing exhausted steam is provided downstream of the medium / low pressure cylinder 12 . The condensate is returned to the steam generator 15 via the pump 17 , the medium / low pressure preheater 18 and the two high pressure preheaters 19 and 20 . A reheating system 21 and feedwater preheating systems A, B, C, D, n are provided to improve efficiency during operation. The mentioned components and their functions are well known to those skilled in the art so that a more detailed e...

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Abstract

The invention relates to a method and a device for operating a steam turbine (10) comprising several no-load or light-load phases (11, 12). All phases (11, 12) are supplied with steam in order to ensure good preheating. According to the invention, the supply of a phase (11) is selected in such a way that said phase (11) produces the least possible output, in particular no output. The enthalpy differential ( DELTA h) between the entrance (25) to and exit (26) from the phase (11) is thus preferably reduced to zero.

Description

technical field [0001] The invention relates to a method for operating a steam turbine with multiple cylinders during no-load or low-load operation, with steam being introduced into all individual cylinders. The invention also relates to a device for distributing steam to the individual cylinders of a steam turbine during no-load or low-load operation, and in particular for carrying out the mentioned method. Background technique [0002] The problem of steam turbines and their construction is addressed in particular in the article "Thermische Kraftanlagen" by Prof. Dr.-Ing. H.I. Thomas of Springer-Verlag, 2nd edition, 1985. Details for calculating the enthalpy and other thermodynamic parameters can be derived, for example, from VEB Fachbuchverlag, Leipzig, 24th edition, 1985, "Technische Formeln fur die Praxis". [0003] There is a continuing need to further reduce the start-up time of steam turbines. A shorter start-up time is only possible if all the individual cylinders...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01K7/00F01D19/02F01D25/10F01D19/00
CPCF01D19/02F01D25/10
Inventor 埃德温·戈布里克特于尔根·哈夫曼诺伯特·亨克尔迈克尔·韦克桑
Owner SIEMENS AG
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