scholarly journals Design and Analysis of Steam Turbine Rotor Blade

2021 ◽  
Vol 9 (8) ◽  
pp. 2511-2518
Author(s):  
Sanket Sangode
Keyword(s):  
Thermal Analysis ◽  
Steam Turbine ◽  
Turbine Blade ◽  
Turbine Rotor ◽  
Blade Profile ◽  
Impulse Turbine ◽  
Turbine Rotor Blade ◽  
Inconel 600 ◽  
Thermodynamic Performance ◽  
Steam Turbine Blade

Abstract: A steam turbine is a tool that extracts thermal electricity from pressurized steam and makes use of it to do mechanical work on a rotating output shaft. The steam turbine offers the better thermodynamic performance with the aid of the usage of a couple of levels inside the growth of steam. The levels are characterized by using the manner of strength extraction from them is considered as impulse or reaction mills. On this work the parameters of steam turbine blade various and evaluation is carried out for electricity, existence and warmth switch fees. The varied parameters are the ratio of x-axis distance of blade profile with the aid of chord length and ratio of maximum peak of blade profile in y-path to the chord period. The three-D modeling is executed by way of using Catia software program. The Ansys software is used for static, thermal analysis, subsequently concluded the best design and material (haste alloy, chrome steel, inconel 600) for steam turbine blade, after steam turbine blade imported the stl record 1:2 ratio in to 3-d printing we carried out fast prototyping technique. Keywords: Steam Turbine, Thermal Energy, Impulse Turbine, Reaction Turbine, Static Analysis, Thermal Analysis

Steam Turbine Rotor Blade Cascades Aerodynamic Performance Research at Off-Design Incidence

2012 ◽  
Author(s):  
Zi-Ming Feng ◽  
Jin-Dong Zhang ◽  
Hui-Bin Gu
Keyword(s):  
Steam Turbine ◽  
Performance Test ◽  
Static Pressure ◽  
Pressure Coefficient ◽  
Turbine Rotor ◽  
Aerodynamic Performance ◽  
Blade Profile ◽  
Turbine Rotor Blade ◽  
Steam Turbine Rotor ◽  
Profile Loss

A steam turbine rotor cascades aerodynamic performance test are performed in annular cascade wind tunnel. The tested blade is curved and has rear-loaded profile characteristic. The main goal of this research project is to measure the off-design incidence aerodynamic performance, such as static pressure coefficient, total pressure loss and streamline. The test result indicates that incidence variation has little influence to the static pressure coefficient along blade profile, but has relatively significant influence to the profile loss. The blade profile loss increase continuously with the incidence sequence at 0°, −10° and +10°. At the tested incidence, the secondary flow intensity was very weak and its influence area was very small too. It states the aft-loaded blade profile has good incidence suitability.

scholarly journals Failure Analysis in Lacing Wire Of Last Stage Low Pressure Steam Turbine Blade

2021 ◽  
Vol 1096 (1) ◽  
pp. 012097
Author(s):  
A M Kongkong ◽  
H Setiawan ◽  
J Miftahul ◽  
A R Laksana ◽  
I Djunaedi ◽  
...  
Keyword(s):  
Failure Analysis ◽  
Steam Turbine ◽  
Turbine Blade ◽  
Low Pressure ◽  
Pressure Steam ◽  
Steam Turbine Blade ◽  
Last Stage

Studies on Determination of Natural Frequencies of Industrial Turbine Blades

1995 ◽  
Author(s):  
Mahesh M. Bhat ◽  
V. Ramamurti ◽  
C. Sujatha
Keyword(s):  
Steam Turbine ◽  
Dynamic Behavior ◽  
Turbine Blade ◽  
Natural Frequencies ◽  
Complex Structure ◽  
Turbine Blades ◽  
Blade Root ◽  
Steam Turbine Blade ◽  
Manufacturing Tolerances

Abstract Steam turbine blade is a very complex structure. It has geometric complexities like variation of twist, taper, width and thickness along its length. Most of the time these variations are not uniform. Apart from these geometric complexities, the blades are coupled by means of lacing wire, lacing rod or shroud. Blades are attached to a flexible disc which contributes to the dynamic behavior of the blade. Root fixity also plays an important role in this behavior. There is a considerable variation in the frequencies of blades of newly assembled turbine and frequencies after some hours of running. Again because of manufacturing tolerances there can be some variation in the blade to blade frequencies. Determination of natural frequencies of the blade is therefore a very critical job. Problems associated with typical industrial turbine bladed discs of a 235 MW steam turbine are highlighted in this paper.

Failure analysis of the 350MW steam turbine blade root

2009 ◽  
Vol 16 (4) ◽  
pp. 1270-1281 ◽  
Author(s):  
J. Kubiak Sz ◽  
J.A. Segura ◽  
G. Gonzalez R ◽  
J.C. García ◽  
F. Sierra E ◽  
...  
Keyword(s):  
Failure Analysis ◽  
Steam Turbine ◽  
Turbine Blade ◽  
Blade Root ◽  
Steam Turbine Blade

Path Planning for Circular Cutter Envelop Milling of Steam Turbine Blade

2014 ◽  
Vol 989-994 ◽  
pp. 2908-2912
Author(s):  
Jian Jun Wang ◽  
Ke Wang ◽  
Qiong Wu
Keyword(s):  
Steam Turbine ◽  
Turbine Blade ◽  
Tool Path ◽  
Vertical Section ◽  
Surface Matching ◽  
Nurbs Surface ◽  
Processing Efficiency ◽  
Tool Paths ◽  
Blade Machining ◽  
Steam Turbine Blade

In order to solve the problem of poor steam turbine blade processing efficiency, and on the basis of analyzing the turbine blade surface and the existing processing methods, a model of circular cutter turbine blade machining is built. By comparing the tool paths of horizontal and vertical section envelope machining, choosing quasi-vertical cross section envelope machining method and utilizing the original datum and NURBS surface matching mathematic methods, this paper provides an algorithm of residual height calculating, and based on this, the tool path can be planned. Datum show that, the tool path of circular cutter machining blades is much longer than the tool path of ball-end cutter envelop milling machining blades, and the machining efficiency is also highly enhanced.

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