This handbook is intended to assist graduate students with qualifying examination preparation. The generator half of the double flow low pressure section case is free to move toward the generator. Differential expansion of steam turbine generators. Differential expansion sensitivity studies during steam. Use of turbine expanders and hydraulic turbines in cryogenic. Find, read and cite all the research you need on researchgate. A sleeve surrounds the distal part of the first rod on an. Differential expansion of steam turbine generators 34wm0q69kyl7. Differential expansion sensitivity studies during steam turbine startup article in journal of engineering for gas turbines and power 86 september 2015 with 370 reads how we measure reads. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. The first rod further includes a proximal part within the housing. The flow of steam through nozzles may be regarded as adiabatic expansion. Download ebook in pdfepubtuebl format or read online free.
Differential expansion of steam turbine generators by chris james skf reliability systems turbine supervisory instrumentation. A shell differential expansion detector and turbomachine including a detector are disclosed. As of today we have 77,375,193 ebooks for you to download for free. Download ebooks in pdf, epub, tuebl and mobi format for free or read online ebooks, available for kindle and ipad. The real values of critical speeds should be measured at. Steam turbine start up free download as powerpoint presentation. Differential expansion it is the difference between the rotor expansion. Steam turbines startups 1 principles of steam turbines startups. Please enable cookies to ensure the proper experience. Ges steam turbine technology programs have always strongly. The casing temperatures and rotorstator differential expansion, measured during the. Request pdf differential expansion sensitivity studies during steam turbine startup in order to improve the startup flexibility of steam turbines, it becomes. Above 600 rpm rotor relative vibrations should be monitored. Differential expansion on a turbine is the relative measurement of the rotors axial thermal growth with respect to the case.
For hp differential expansion we are using direct differential expansion probe, and for lp differential expansion we are using. Us8882449b2 innertoouter shell differential expansion. Differential expansion sensitivity studies during steam turbine. In some turbines they are also anchored at free end thrust bearing anchor. One the threshold is exceeded, automatic trip of turbine takes place. We are using bently nevada 3300 xl 25 mm transducer. Download as ppt, pdf, txt or read online from scribd.
Using reheat in a cycle increases the work output from the turbine and also the expansion reaches conclusionfrom the turbine and also the expansion reaches conclusion before the steam condenses, there by minimizing the erosion ofbefore the steam condenses, there by minimizing the erosion of 15. Pdf advanced nonlinear modeling of gas turbine dynamics. In an embodiment, the shell differential expansion detector device includes a housing. Pdf in order to achieve the highest power plant efficiency, original equipment manufacturers. Although the application of differential expansion and rotor expansion have much in common, it is important to understand the difference between the two measurements.