Low-Pressure Turbine. A low pressure turbine within a turbofan jet engine consists of five repeating stages. From: Fluid Mechanics and Thermodynamics of Turbomachinery (Sixth
201881 · Backpressure steam turbines (BPSTs) produce low-pressure (LP) exhaust steam that can be used for one or more process heating duties ( Figure 1a ). The objectives are to provide the process
20211117 · In the present paper, the damage and life cycle of the last-stage blades (LSB) of a 250-MW low-pressure steam turbine are predicted under low-cycle fatigue
The Low-pressure Turbine is a machine which utilizes Steam (Low) from the output of a High-Pressure Turbine or Exhaust Scrubber. It outputs Mechanical Energy and Steam Depleted which can be recovered back into Water via processing in a Cooling Tower or Thermal Desalinator . The Low-pressure Turbine contains a shaft which runs laterally
2019522 · Each LP Turbine (low-pressure turbine) is usually double-flow reaction turbine with about 5-8 stages (with shrouded blades and with free-standing blades of last 3 stages). LP turbines produce
2016122 · This chapter discusses the basic design and components of a high pressure, intermediate pressure, and low pressure steam turbine. Turbines provide the
2019522 · HP Turbine – High-pressure Steam Turbine. Most of nuclear power plants operates a single-shaft turbine-generator that consists of one multi-stage HP turbine and three parallel multi-stage LP turbines, a main generator and an exciter.. HP Turbine (high-pressure turbine) is usually double-flow turbine element with an impulse control stage
2023128 · The steam expansion rate of the stator blades in each stage was evaluated from the measured wall pressure and total pressure. In addition, the turbine efficiency was evaluated from the measured torque and mass flowrate, and the effect of flowrate and condensing stage can be taken into account for losses caused by condensation.
201141 · The turbine section of low-pressure turbine of a 500 MW steam turbine consists of six stages of turbine stator and rotor. The 4–6 stages of the low-pressure turbine are operated in the wet steam region. On the routine inspection after 10 years service, a crack was observed at the vane of the fourth stage rotor blade in the low-pressure
2022104 · The inlet pressure and temperature of the low pressure steam turbine are 45 ata and 342.5 °C respectively and the corresponding outlet values are 0.0884 ata and 43.1 °C. In order to attain the maximum rotational speed of 3000 rpm, the mass of the steam flowing on the turbine blades is 1568 Tons/hour.
2023517 · The last-stage low-pressure steam turbine blade with a twisted aerofoil section is depicted in Fig. 1, which illustrates the idealization of the blade as a line diagram along with the referral axes. Due to the asymmetric section, coupled bending–twisting motion occurs in the blade vibrations.
2023517 · In steam turbines, the last stages of the low-pressure rotors have relatively lengthy moving blades to accommodate high-specific-volume steam flows. They are
2021227 · The modern power generation system requires steam turbines operating at flexible operating points, and flow instabilities readily occur in the low-pressure (LP) last
200991 · Modern steam power plants must operate safely at extremely low loads, known as windage, in which the low pressure (LP) turbine runs with decreased or even zero flow. Windage is characterized by a
20211117 · In the present paper, the damage and life cycle of the last-stage blades (LSB) of a 250-MW low-pressure steam turbine are predicted under low-cycle fatigue conditions. A finite element-based analysis is carried out to compute fatigue life and damage for a blade with a fir-tree root region under the loading condition of centrifugal stresses
2024314 · advanced low-pressure turbine rotor. Modern, fully viscous 3-D calculation software allows a reduction in the number of flows plus a significant increase
202437 · As one of the most innovative Steam Turbine suppliers in India, we designed and patented the LST which drastically reduces acquisition cost, installation time, space requirement, operator training and maintenance costs over the life of the turbine. The LST is designed to operate in saturated or superheated steam, high or low pressure
The current study focuses on utilizing computational analysis to identify the factors responsible for blade failure, utilizing a real-life case study as the basis for an
the low-pressure feedwater heaters; In the LP turbine, the low-pressure stage receives steam (this steam is usually superheated steam – point E at the figure; ~1.15 MPa; 250°C) from a moisture separator-reheater (MSR). The steam from the HP turbine must be reheated to avoid damages that could be caused to the blades of the steam turbine by
2019725 · Experimental study and modelling of the ventilation power and maximum temperature of low-pressure steam turbine last stages at low load