Steam turbine rotor blade, method for manufacturing steam turbine rotor blade, and steam turbine
A technology of steam turbine and manufacturing method, which is applied to the supporting elements of blades, engine elements, machines/engines, etc., can solve problems such as aerodynamic performance degradation, and achieve the effect of simple and stable operation
Active Publication Date: 2017-04-19
MITSUBISHI POWER LTD
View PDF10 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] In Japanese Patent Application Laid-Open No. 2011-137424, the intermediate connection member provided to improve the vibration characteristics of the long blades becomes the flow path resistance of the steam flowing between the blades, resulting in a decrease in aerodynamic performance.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0080] Hereinafter, several embodiments of the present invention will be described with reference to the drawings. However, dimensions, materials, shapes, relative arrangements, and the like of components described as embodiments or shown in the drawings do not limit the scope of the present invention thereto, and are merely illustrative examples.
[0081]For example, expressions such as "in a certain direction", "along a certain direction", "parallel", "orthogonal", "center", "concentric" or "coaxial", etc., indicating relative or absolute configurations are not only strictly Not only means such an arrangement, but also means a state of being relatively displaced by an angle and a distance to the extent that there is a tolerance or the same function can be obtained.
[0082] For example, expressions such as "same", "equal", and "homogeneous" that indicate the state of equality of things not only strictly represent the state of equality, but also represent the state of differe...
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
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| porosity | aaaaa | aaaaa |
Login to View More
Abstract
One steam turbine rotor blade for forming a rotor blade row in a steam turbine is equipped with a rotor blade main body having: a blade part; a blade root part provided at one end of the blade part; a first connecting part provided at the other end of the blade part and having a first opposing surface; and a second connecting part provided in the middle of the blade part and having a second opposing surface. The first opposing surface and the second opposing surface are formed so as to be arranged opposing the respective first opposing surface and second opposing surface of the other rotor blade main bodies adjacently arranged in the rotor blade row. Furthermore, the surface of at least one of the opposing surfaces of the steam turbine rotor blade, that is, the first opposing surface or the second opposing surface, is provided with a cover layer comprising a Co-based alloy of a single-composition formed by high-speed flame spraying, wherein the cover layer is formed on that surface while a diffusion layer having a thickness of 10 [mu]m or less exists between the cover layer and the surface.
Description
technical field [0001] The present disclosure relates to a steam turbine rotor blade, a manufacturing method of the steam turbine rotor blade, and a steam turbine. Background technique [0002] For example, an axial-flow steam turbine used for power generation has a plurality of rows of stationary blades and rows of moving blades, and the row of stationary blades and the row of moving blades are composed of a plurality of turbine stationary blades and turbine moving blades, respectively. [0003] As a turbine rotor blade, an integral shroud blade disclosed in JP-A-4-5402 has an integral shroud at the tip of the blade. When the blades are twisted and deformed by centrifugal force during operation of the turbine, adjacent integral shrouds are brought into contact with each other. [0004] In this type of turbine rotor blades, in particular, as a countermeasure against the increase in stress caused by the increase in the length of the steam turbine blades, in order to improve ...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/16C23C4/06C23C4/12F01D5/22F01D5/26F01D5/28F01D25/00
CPCC23C4/06C23C4/02C23C4/08F01D5/225C23C4/129C22C19/07F01D5/288F05D2230/90C23C4/12F01D5/16F01D5/22F01D5/26F01D5/28F01D25/00F01D5/147F05D2220/31F05D2300/17
Inventor 田畑创一朗榎本裕基杼谷直人今井俊尔栗村隆之冈矢尚俊冲森友太浅香晴彦
Owner MITSUBISHI POWER LTD