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An anti-oxidation high temperature component of steam turbine

A technology for high-temperature components and steam turbines, applied to engine components, mechanical equipment, machines/engines, etc., can solve problems such as high-temperature oxidation of metal parts, damage to the flow-through surface, and jamming of moving parts to achieve the effect of solving oxidation

Active Publication Date: 2021-07-27
DONGFANG TURBINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to solve the problems of high-temperature oxidation of metal parts in steam turbines, jamming of movable parts and damage to flow-through surfaces, in order to provide an anti-oxidation high-temperature component of steam turbine in view of the above-mentioned problems.
The use of anti-oxidation coatings to solve the high-temperature components related to steam turbines, especially in the more important parts, can have anti-oxidation ability, so that it can effectively avoid the impact on the components after the scale falls off.

Method used

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  • An anti-oxidation high temperature component of steam turbine
  • An anti-oxidation high temperature component of steam turbine
  • An anti-oxidation high temperature component of steam turbine

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Embodiment

[0031] An oxidation resistant steam turbine high temperature component such as figure 1 to image 3 As shown, it includes high-temperature steam valves, bridge seals and diaphragm seal grooves used in steam turbine units. The surface of the high-temperature steam valves, bridge seals and diaphragm seal grooves in contact with high-temperature steam is provided with a layer of anti-corrosion Oxide coating. More specifically, in the drawings, the thick solid line is the region with the oxide layer coating.

[0032] In this embodiment, the design of the anti-oxidation layer coating is mainly to solve the problem that: in the current steam turbine unit, due to the technical limitations of material properties, the structure of valves, seals and other structures that have been subjected to high-temperature steam for a long time , the problem of oxidation corrosion is still very prominent.

[0033] Based on the design principles of the above-mentioned specific embodiments, in ord...

Embodiment 2

[0046] An anti-oxidation coating for high-temperature components of a steam turbine is made of MCrAlY, and the thickness of the oxidation coating is 0.15-0.25mm.

[0047] In summary, the anti-oxidation high-temperature components of steam turbines of the present invention solve the current problem of oxidation and peeling of steam turbines in the working environment of high-temperature steam, and the anti-oxidation coating can effectively prevent high-temperature components from oxidation and peeling. Phenomenon, so that for the steam turbine in operation, there will be no problems of jamming and damage to the flow profile.

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Abstract

The invention discloses a high-temperature component of a steam turbine, in particular an oxidation-resistant high-temperature component of a steam turbine, which belongs to the technical field of steam turbine devices; the high-temperature component includes a high-temperature steam valve, a bridge seal and a separator steam Sealing tank, the surface of the high-temperature steam valve, bridge steam seal and diaphragm seal tank in contact with high-temperature steam is provided with an anti-oxidation layer coating; an anti-oxidation high-temperature component of a steam turbine of the present invention solves the problem of the high temperature of the current steam turbine. The problem of oxidation and peeling occurs in the working environment of steam. With the help of anti-oxidation coating, it can effectively prevent the phenomenon of oxidation and peeling of high-temperature parts, so that for the running steam turbine, there will be no jamming and flow surface damage. damage problem.

Description

technical field [0001] The invention relates to a high-temperature component of a steam turbine, in particular to an anti-oxidation high-temperature component of a steam turbine, and belongs to the technical field of steam turbine devices. Background technique [0002] As the country proposes new requirements for clean energy, energy saving and consumption reduction, the demand for high-parameter and high-efficiency units in the steam turbine power generation industry is becoming more prominent. The continuous improvement of steam turbine parameters forces the performance of materials to face higher and stricter requirements. The high temperature resistance of materials requires not only good mechanical properties, but also strong oxidation and corrosion resistance. However, due to the technical limitations of material properties, the problem of oxidation and corrosion is still very prominent in structures such as valves and steam seals that have been subjected to high-temp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D25/00
CPCF01D25/005F01D25/007F05D2230/90
Inventor 李志明高展羽王鑫张晓东曹守洪范华王建伟翟璇王娟谢涛赵海峰张文挺
Owner DONGFANG TURBINE CO LTD
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