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Multi-stage steam turbines for power generation

A technology of steam turbine and steam, which is applied in the direction of steam application, steam engine device, machine/engine, etc. It can solve the problems of device efficiency loss and achieve the effect of improving the flow capacity

Active Publication Date: 2020-04-14
GENERAL ELECTRIC TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the steam turbine is originally designed for high flow capacity, the turbine control valve may need to be throttled significantly during initial operation, resulting in a loss of plant efficiency

Method used

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  • Multi-stage steam turbines for power generation
  • Multi-stage steam turbines for power generation

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Embodiment Construction

[0027] Exemplary embodiments of the present disclosure are now described with reference to the drawings, wherein like reference numerals are used to represent like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. However, the present disclosure may be practiced without these specific details and is not limited to the exemplary embodiments disclosed herein.

[0028] In this description reference is made to the term "flow capacity". In this context, the through-flow capacity is defined as the flow-through capacity of a steam turbine in terms of its capacity to receive a steam volume flow.

[0029] figure 1 The exemplary embodiment shown in includes a multi-stage steam turbine 10 having a feed line 20 , an extraction line 22 and a capacity line 24 .

[0030] The supply line 20 may include multiple entry points into the steam turbine 10 ...

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Abstract

The invention relates to a steam turbine (10) having a plurality of stages comprising a plurality of inlet points (12) connected to a plurality of inlet lines (21), a supply line (20) connected to a plurality of inlet lines (21) ) and at least one extraction line (22), the extraction line extends from an intermediate stage of the steam turbine (10) to extract steam from the steam turbine (10). At least one capacity line (24) fluidly connects the inlet line (21) and the at least one extraction line (22) so as to bypass the steam turbine (10), and the capacity line is further configured to increase the throughflow of the steam turbine (10) Capacity, the flow capacity is measured from the supply line (20) upstream of the capacity line (24) to a plurality of entry points (12).

Description

technical field [0001] The present disclosure relates generally to multi-stage steam turbines for generating power, and more particularly, to steam turbine configurations that vary the flow capacity of the steam turbine. Background technique [0002] A steam power plant typically includes a steam generator and a series of pressure steam turbines, wherein the steam condition at the inlet of the first steam turbine depends on the actual conditions of the steam generator. While steam generator and steam turbine performance may initially be matched to provide optimum performance, over time steam generator performance typically degrades, resulting in a reduction in steam pressure at the steam turbine for a given heat load. It is further possible that the device can be operated at a higher thermal load than originally designed. Both of these situations can lead to a need for increased flow capacity. The solution to this problem is to initially limit the high flow capacity of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D17/00F01D17/10F01D25/30F01D25/32
CPCF01D17/00F01D17/10F01D25/30F01D25/32F01K7/04F01K7/165F01K17/00F01K13/02
Inventor V.乔戴恩M.托勒蒙德
Owner GENERAL ELECTRIC TECH GMBH