System and method for cooling high-temperature steam turbine rotor by gland seal

A steam turbine rotor and steam turbine technology, applied to mechanical equipment, engine components, machines/engines, etc., can solve problems such as hidden dangers in safe operation, reduced service life of bearings, and increased emulsification speed of lubricating oil

Active Publication Date: 2014-10-01
JIN TONG LING TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The service life of the bearing is reduced, the emulsification speed of the lubricat...

Method used

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  • System and method for cooling high-temperature steam turbine rotor by gland seal
  • System and method for cooling high-temperature steam turbine rotor by gland seal

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] A system for cooling the rotor of a high-temperature steam turbine using a steam seal, including a steam seal system composed of a steam turbine seal 13, a pressure equalization box 8, a shut-off valve, a regulating valve, a self-operated pressure regulating valve 12 and a plurality of pipelines, of which No. 1 pipe The pipeline is connected to the pressure equalization box 8 from any position in the steam turbine body where the pressure is from 0.588MPa to 1.2MPa. An adjustment device is arranged on the No. 1 pipeline to keep the pressure range in the pressure equalization box 8 at 0.13-0.135MPa; The pressure equalization box 8 is connected to the second-end chamber 15 of the steam seal before and after the steam turbine, as the steam supply pipeline of the steam turbine seal; the No. 3 pipeline is the desuperheating water pipeline, which leads into th...

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Abstract

The invention aims to provide a steam turbine rotor cooling system which can cool the high-temperature rotor of the steam turbine, reduce steam leakage energy loss and also reduce temperature of a bearing and lubricating oil, meanwhile is high in automation degree of adjustment and control and can improve safe operation of the steam turbine. The specific technical scheme is as follows: a system for cooling a high-temperature steam turbine rotor by gland seal is characterized by comprising a gland sealing system composed of steam turbine gland seals, a pressure equalization box, a stop valve, a regulating valve, a self-operated pressure regulator and a plurality of pipelines, wherein the first pipeline is used for connecting any position, with the pressure of high than 0.135MP, in the steam turbine body to the pressure equalization box, a regulating device composed of the stop valve, the regulating valve and the self-operated pressure regulator are arranged on the first pipeline, and thereby keeping the pressure in the pressure equalization box within the range of 0.13-0.135MPa; the second pipeline is used for connecting the pressure equalization box to the second last gear cavities on the front and rear sides of the steam turbine gland seal to serve as the steam supply pipeline of the steam turbine gland seal.

Description

technical field [0001] The invention relates to the field of steam turbine rotor cooling, and specifically discloses a system and method for cooling a high-temperature steam turbine rotor by using a steam seal. Background technique [0002] For high-temperature and high-pressure steam turbine units, the front-end rotor of the steam turbine is at high temperature during operation. With the increase of operating time, the temperature of the rotor increases, resulting in an increase in the temperature of the bearing and the return oil of the bearing lubricating oil. The service life of the bearing is reduced, the emulsification speed of the lubricating oil is increased, and a great hidden danger is caused to the safe operation of the unit. Contents of the invention [0003] The purpose of the present invention is to provide a steam turbine rotor cooling system capable of cooling the high-temperature rotor of the steam turbine, reducing the energy loss of steam leakage, loweri...

Claims

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Application Information

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IPC IPC(8): F01D5/08F01D11/02
Inventor 范长政冯明飞郁盛楠
Owner JIN TONG LING TECH GRP CO LTD
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