Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Steam turbine and method for reducing operating temperature of outer cylinder of steam turbine

A technology of working temperature and steam turbine, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve the problems of increased manufacturing costs of outer cylinders, achieve cost reduction, reduce high temperature resistance requirements, and achieve good economic benefits.

Inactive Publication Date: 2018-12-18
DONGFANG TURBINE CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous improvement of the steam inlet parameters of the steam turbine, the working temperature of the outer cylinder will be higher and higher, and the outer cylinder needs to choose better materials, which will inevitably lead to a great increase in the production cost of the outer cylinder

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Steam turbine and method for reducing operating temperature of outer cylinder of steam turbine
  • Steam turbine and method for reducing operating temperature of outer cylinder of steam turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the technology of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] As shown in the figure, a steam turbine includes an inner cylinder 2 and an outer cylinder 1, an interlayer space 3 is formed between the inner cylinder 2 and the outer cylinder 1, and a steam turbine is provided between the front end steam seal room 4 and the rear end flow stage 5 The high-temperature steam outlet channel 6 and the low-temperature return steam channel 7, the steam inlet 61 of the high-temperature steam outlet channel 6 is set on the seal body of the front seal room 4, and the steam outlet 62 of the high-temperature steam outlet channel 6 is set On the back...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a steam turbine and a method for reducing the operating temperature of an outer cylinder of the steam turbine. A high temperature steam outlet channel and a low temperature steam return channel are arranged between the front end steam sealing interval and the back end through flow stage of the steam turbine, a steam inlet of the high temperature steam outlet channel is formed in a steam sealing body on the front end steam sealing interval, and a steam outlet of the high temperature steam outlet channel is formed in the back end through flow stage; and a steam inlet of the low temperature steam return channel is formed in the back end through flow stage, located on the inner side of the steam outlet of the high temperature steam outlet channel, and separated by morethan one through flow stage, and the steam outlet of the low temperature steam return channel is formed in the steam sealing body of the front end steam sealing interval, located on the outer side ofthe steam inlet of the high temperature steam outlet channel, and separated by more than one ring of steam sealing body. The outer cylinder no longer bears the higher operating temperature and can bemade from the low-grade materials, the requirements of the resistance to high temperature of the outer cylinder are reduced, the costs of production and manufacturing are greatly reduced accordingly,and the high economic benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of steam turbines, in particular to a steam turbine and a method for reducing the working temperature of the outer cylinder of the steam turbine. Background technique [0002] The steam turbine is a high-speed rotating power machine. There is a certain gap between the stationary part and the rotating part of the steam turbine. In order to reduce the steam leakage in the dynamic and static gap, a steam seal device is installed. According to different installation positions, it is divided into end steam seal, diaphragm steam seal and blade top steam seal. The steam is an isentropic throttling process in the steam seal flow channel, basically the pressure drops and the temperature changes little. Generally, most steam turbines are divided cylinders for high and medium pressure, single-flow, and double-layer cylinder structure. The steam temperature at the entrance of the front end seal of a single-flow double...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F01D25/14F01D25/12
CPCF01D25/12F01D25/14
Inventor 谢涛孙奇张晓东王建伟侯明军王鑫高展羽翟璇胥睿王娟
Owner DONGFANG TURBINE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products