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Application of heat resistant steel in main throttle valve and cylinder of 630 DEG C steam turbine

A technology of heat-resistant steel and steam turbines, applied in mechanical equipment, engine components, machines/engines, etc., can solve problems such as insufficient high-temperature durability performance, and achieve the effects of increasing solid solution strengthening, strong high-temperature durability, and reducing stacking fault energy

Inactive Publication Date: 2018-05-29
SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD +1
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  • Application Information

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Problems solved by technology

[0003] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide an application of heat-resistant steel in the main steam valve of a 630-degree steam turbine, which is used to solve the problem of insufficient high-temperature durability of the main steam valve of a steam turbine in the prior art. question

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  • Application of heat resistant steel in main throttle valve and cylinder of 630 DEG C steam turbine
  • Application of heat resistant steel in main throttle valve and cylinder of 630 DEG C steam turbine
  • Application of heat resistant steel in main throttle valve and cylinder of 630 DEG C steam turbine

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Embodiment Construction

[0031] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0032] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered. At the same time, terms such as "upper"...

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Abstract

The invention provides an application of heat resistant steel in a main throttle valve and a cylinder of a 630 DEG C steam turbine. The heat resistant steel comprises, by mass, 0.08%-0.16% of C, 0.60%-1.20% of Mn, 8.50%-10.00% of Cr, 1.20%-1.80% of Mo, 0.10%-0.40% of Ni, 0.70%-1.30% of Co, 0.10%-0.30% of V, 0.010%-0.030% of N, 0.02%%-0.08% of Nb, 0.006%-0.022% of B, and balance Fe and impurities.The heat resistant steel has the characteristics of 630 DEG C high temperature resistance. Meanwhile, the heat-resistant steel is applied to the main throttle valve and cylinder of the steam turbine,so that the main throttle valve and cylinder have high durability in high temperature and have the characteristics of 630 DEG C high temperature resistance.

Description

technical field [0001] The invention relates to the application of a heat-resistant steel, in particular to the application of a heat-resistant steel in the main steam valve and cylinder of a 630-degree steam turbine. Background technique [0002] With the requirement of energy saving and emission reduction, my country's energy structure is undergoing in-depth adjustment. And with the future development trend of the thermal power generation market, the steam turbine is required to continuously develop towards high parameters and high efficiency. Therefore, it is necessary to increase the steam temperature and pressure of the main steam valve of the steam turbine. In the past few decades, the steam temperature of the main steam valve has been continuously increased from 538°C and 566°C to 600°C and even 620°C. The material of the main steam valve has also developed from alloy steel to heat-resistant steel, but the application of heat-resistant steel in the main steam valve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/54C22C38/52C22C38/48C22C38/46C22C38/44C22C38/04C21D1/18F01D17/10
CPCC22C38/54C21D1/18C22C38/04C22C38/44C22C38/46C22C38/48C22C38/52F01D17/10
Inventor 刘松锋沈红卫刘霞梅林波许存官张帆罗巍李刚陆文龙
Owner SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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