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Heavy load efficient regulating grade moving blade for industrial steam turbine

An industrial steam turbine, large-load technology, applied in the direction of machines/engines, blade support components, mechanical equipment, etc., can solve the problems of increasing blade processing costs, achieve excellent blade processing technology and assembly performance, reduce processing costs, and broad Market Application Prospects and Competitive Effects

Pending Publication Date: 2018-09-28
HANGZHOU STEAM TURBINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the steam turbine blades newly developed by most manufacturers are all discrete points, which need to be processed by CNC machining methods, which increases the processing cost of the blades

Method used

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  • Heavy load efficient regulating grade moving blade for industrial steam turbine
  • Heavy load efficient regulating grade moving blade for industrial steam turbine
  • Heavy load efficient regulating grade moving blade for industrial steam turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention will be further described below by examples in conjunction with the accompanying drawings.

[0019] This embodiment is an industrial steam turbine regulating stage moving blade, and the specific parameters are: back pressure 59.15 bar, flow rate 106.9 kg / s, wheel circumference efficiency 90%, total inlet pressure 83.3 bar, and total inlet temperature 803.93K.

[0020] see figure 1 , the large-load high-efficiency regulating stage moving blade of an industrial steam turbine of the present invention includes an airfoil 2, one end of the airfoil 2 is provided with a transition section 3 and a blade root 4 integrally formed with the airfoil 2, and the other end of the airfoil 2 One end is provided with a shroud 1 integrally formed with the airfoil 2 , the airfoil 2 is of equal cross-section, and the blade root 4 is composed of two post forks with pin holes.

[0021] see figure 2 , the airfoil shape of the airfoil 2 is composed of 4 sections of curve...

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Abstract

The invention discloses a heavy load efficient regulating grade moving blade for an industrial steam turbine. The heavy load efficient regulating grade moving blade comprises a blade body, a transitional section, a blade root and a girdle. The transitional section and the blade root integrally formed with the blade body are arranged at one end of the blade body, the girdle integrally formed with the blade body is arranged at the other end of the blade body, the blade body is in a uniform section blade form, and the blade root is composed of two column forks with pin holes. The blade form of the blade body is composed of four curves, and the slopes of tangent of the junctions of the four curves are equal. The efficiency of the efficient blade disclosed by the invention is superior to that of a conventional blade, the efficient blade has a very good variable working condition characteristic, and the processing cost of the blade is only 1 / 4-1 / 3 of that of the conventional blade with a common discrete point blade form.

Description

technical field [0001] The invention belongs to the field of impeller machinery and relates to a large-load high-efficiency regulating stage moving blade of an industrial steam turbine. Background technique [0002] Industrial steam turbines are important equipment for function conversion, and are widely used in various fields such as petroleum, chemical industry, metallurgy, energy, nuclear power, and ships. Industrial steam turbines are complex in structure and difficult to design and manufacture, and belong to the high-end equipment manufacturing industry. [0003] For industrial steam turbines, since they are mainly used as the driving machine of energy-consuming equipment such as fans, compressors, and pumps, the load characteristics of the driven machine determine the characteristics of industrial steam turbines' variable working conditions, and their working conditions vary widely. Therefore, the most important and obvious feature of industrial steam turbine blades i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/14
CPCF01D5/141
Inventor 蓝吉兵丁旭东孔建强隋永枫毛汉忠陈金铨袁浩王佳男庄达明刘象拯
Owner HANGZHOU STEAM TURBINE
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