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Steam seal header, method of using a steam seal header and steam turbine system incorporating a steam seal header

A steam turbine, steam technology, applied in the direction of pipes/pipe joints/pipes, pipes, branch pipelines, etc., can solve the problem of high cost of desuperheater 260

Inactive Publication Date: 2013-06-19
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Although figure 2 The configuration shown in allows the energy in the excess steam to be used to drive the generator 140, but the cost of the desuperheater 260 is often too high to make the additional energy produced by this configuration undesirable

Method used

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  • Steam seal header, method of using a steam seal header and steam turbine system incorporating a steam seal header
  • Steam seal header, method of using a steam seal header and steam turbine system incorporating a steam seal header
  • Steam seal header, method of using a steam seal header and steam turbine system incorporating a steam seal header

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Embodiment Construction

[0041] image 3 is a schematic diagram of a steam turbine system implementing the present invention. image 3 The configuration shown in allows excess steam collected from the high and medium pressure seals to be used to drive the generator. However, this configuration does not require the use of a desuperheater.

[0042] The steam turbine system includes a high pressure steam turbine 110 connected to a rotating shaft 100 . In addition, an intermediate pressure steam turbine 120 and a low pressure steam turbine 130 are also coupled to the rotary shaft 100 . The rotating shaft 100 drives a generator 140 .

[0043] High pressure seals 112 , 114 are provided to seal the high pressure steam turbine 110 . An intermediate pressure seal 122 is provided to seal the intermediate pressure steam turbine 120 . A low pressure seal 132 is provided to seal the low pressure steam turbine 130 .

[0044] As noted above, under certain operating conditions, the low pressure steam turbine 13...

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Abstract

The invention relates to a steam seal header, a method of using a steam seal header and a steam turbine system incorporating a steam seal header. The steam turbine system for use in a power plant includes a steam seal header that collects steam from seals of a high pressure steam turbine and an intermediate pressure steam turbine. The collected steam is provided to seals of a low pressure steam turbine to ensure the seals provide an effective seal for the low pressure steam turbine. Steam from the low pressure steam turbine is also collected in the steam seal header and it is mixed with the steam collected from the high and intermediate pressure seals. The mixed steam is then provided to drive the low pressure steam turbine.

Description

Background technique [0001] Steam turbine systems are often an integral part of power plants. In some cases, the steam turbine may also be part of a combined cycle power plant that also includes one or more gas turbines. The heat energy is used to generate steam that drives a steam turbine. The steam turbine drives a generator that produces electricity. [0002] A steam turbine system may include a high pressure steam turbine, an intermediate pressure steam turbine, and a low pressure steam turbine, all connected to a common rotating shaft that drives an electrical generator. In some cases different steam turbines may be coupled to different shafts driving different generators. Regardless, seals are used to seal the steam turbine to the rotating shaft. [0003] The seal sealing the steam turbine to the rotating shaft requires a certain amount of steam pressure in order to provide an effective seal. Seals used on high and intermediate pressure steam turbines generally rece...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D11/00F16L41/03
CPCF01D11/06
Inventor S.唐卡达B.姆R.戈努尔A.阿格拉瓦尔G.斯里尼瓦斯
Owner GENERAL ELECTRIC CO