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Method of increasing power of generator, and generator

A generator and power technology, applied in the direction of electromechanical devices, electrical components, electrical components, etc., can solve problems such as cost and consumption

Inactive Publication Date: 2017-07-07
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this, "chillers" or, in warm, dry regions, "evaporative coolers" can be used, however, these chillers or evaporative coolers are each largely involved in power plant process technology and is extremely costly

Method used

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  • Method of increasing power of generator, and generator
  • Method of increasing power of generator, and generator
  • Method of increasing power of generator, and generator

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Experimental program
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Effect test

Embodiment Construction

[0019] The solution for the power increase is to increase the air pressure, in particular the air pressure, in the generator 1 , 11 , 111 and its outer housing 4 .

[0020] This increases the mass flow of gas or air in the generator 1 ′, 11 ′, 111 ′ for cooling, so that heat can be dissipated better, although the frictional losses in the cooling gas increase slightly.

[0021] Depending on the gas internal pressure in the generator 1 ′, 11 ′, 111 ′, a power increase of up to 16% or more can be achieved.

[0022] In order to be able to operate the generator 1 ′, 11 ′, 111 ′ with overpressure, it is possible on the one hand to introduce a shaft seal 10 ′ ( figure 1 ), the shaft seal withstands a higher cooling gas pressure in the outer housing 4, especially air pressure here, ie a cooling gas pressure of at least 1.20 bar (120 kPa), especially at least 1.50 bar (150 kPa), or with A pressure that is at least 10%, especially at least 20%, higher than the ambient pressure.

[002...

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PUM

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Abstract

By using an improved shaft seal and / or changes to the outer housing, an air cooled generator can be modified to operate in overpressure and achieve higher performance.

Description

technical field [0001] The invention relates to increasing the apparent power of an air-cooled turbogenerator, in particular in maintenance situations, by increasing the pressure in the housing, and to an electrical generator. Background technique [0002] Due to time-varying operating conditions among the energy supplier's customers, it often happens that existing power plants are able to produce and sell more active power. To achieve this, an increase in the power of the turbine can be achieved by increasing the efficiency by means of various technologies, an increase of the order of >2% being usually achieved. [0003] In the case of new power plants, however, the customer's concern is to purchase new components that match the current requirements as precisely as possible, in order to keep the investment costs as low as possible here. This leads to the fact that the power plant generator is built with the required power and usually has no reserve in terms of apparent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K9/08H02K5/124H02K5/04
CPCH02K5/04H02K5/124H02K9/08H02K9/10
Inventor 托尔斯滕·克罗尔
Owner SIEMENS AG