Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Anti-corrosion device of temperature element of high-pressure cylinder of steam turbine

A technology of temperature element and high-pressure cylinder, which is applied in the field of anti-corrosion device for temperature element of steam turbine high-pressure cylinder, can solve the problems of element measurement failure, steel armor corrosion, and reduced service life of elements, so as to achieve easy installation, maintenance and replacement without affecting measurement accuracy , the effect of prolonging the service life

Inactive Publication Date: 2014-10-22
大唐双鸭山热电有限公司
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, the temperature measurement of the high-pressure cylinder of the steam turbine in the current power plant belongs to the measurement parameter of weight. At present, long armored thermocouples are mostly used for measurement. Corrosion, resulting in severe corrosion of the steel armor, resulting in corrosion of the temperature components of the high-pressure cylinder of the steam turbine, reducing the service life of the components, and failure of component measurement, thus affecting the stable operation of the unit, and the temperature components of the high-pressure cylinder of the steam turbine cannot be replaced when the steam turbine is not exposed

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
  • Anti-corrosion device of temperature element of high-pressure cylinder of steam turbine
  • Anti-corrosion device of temperature element of high-pressure cylinder of steam turbine
  • Anti-corrosion device of temperature element of high-pressure cylinder of steam turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The specific implementation mode of the present invention is: see figure 1 and figure 2 , including a heat-shrinkable tube and a fixing strip. The heat-shrinkable tube 3 has a long opening 5 in the axial direction. The heat-shrinkable tube 3 is usually made of polymer materials through radiation cross-linking and expansion processes, and has Shape memory, long life and insulation, anti-corrosion effect, split the heat shrinkable tube 3 along the long opening 5, put it on the armored thermocouple 2 on the high pressure cylinder 1 and adjust its position, the heat shrinkable tube 3 is in the opening 5 There may be a seam in the overlapping state, and there may be hot melt glue on the fixing strip 4, and the fixing strip 4 cooperates with the long opening 5 of the heat shrinkable tube 3, so that the heat shrinkable tube 3 becomes a closed whole ; refer to figure 2 , Figure 4 , the inner wall of the heat-shrinkable tube 3 is coated with a hot-melt adhesive layer 6, an...

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

An anti-corrosion device of a temperature element of a high-pressure cylinder of a steam turbine comprises a heat shrinkable tube; the heat shrinkable tube and the external of an armored thermocouple which is arranged on the high-pressure cylinder are glued together; the heat shrinkable tube comprises a tube body and a fixing strip; the heat shrinkable tube is usually formed by polymer materials through the radiation crosslinking treatment and expansion process; a long through opening is axially formed in the heat shrinkable tube; the inner wall of the heat shrinkable tube is matched with the outer diameter of the armored thermocouple; the heat shrinkable tube is shrunken and bundled on armored thermocouple through heating; the fixing strip and an open hot melt adhesive are glued on the external of the opening of the heat shrinkable tube; a plurality of projections are uniformly distributed on the outer wall of the heat shrinkable tube. According to the anti-corrosion device of the temperature element of the high-pressure cylinder of the steam turbine, the heat shrinkable tube sleeves the armored thermocouple to enable the heat shrinkable tube steel to be arranged at the steel armor position of the armored thermocouple to be sealed and accordingly the steel armor position of the armored thermocouple can be isolated from the corrosive gas emitted from heat insulating materials, the corrosion of the corrosive gas volatilized from the heat insulating materials on the armor position of the armored thermocouple is eliminated, and the service life of the armored thermocouple is extended, the measurement accuracy is not affected, the cost is low, and the installation, the maintenance and the replacement are easy.

Description

technical field [0001] The invention belongs to the technical field of power plant equipment application, and in particular relates to an anti-corrosion device for a high-pressure cylinder temperature element of a steam turbine. Background technique [0002] In the high-pressure cylinder of a steam turbine, due to the high steam density, small water droplets, easy acceleration, and small impact, there will be no erosion of the moving blades, but it will cause erosion of a series of stationary parts. Erosion and corrosion mainly occur on cylinders, retaining rings, steam seals and other immovable parts. Erosion and corrosion of static parts is one of the main problems of saturated steam turbines in nuclear power plants, causing a significant decline in unit reliability and economy. [0003] "Analysis of Erosion and Corrosion of 300MW Steam Turbine in Qinshan Nuclear Power Plant" analyzed the erosion phenomenon of steam turbine and steam pipeline found in routine island maint...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01K1/10
Inventor 崔海东董龙哲陈彦成
Owner 大唐双鸭山热电有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products