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INNOVATIVE, CLEAN AND NON-INVASIVE TECHNOLOGY FOR INFRARED THERMOGRAPHIC INVESTIGATIONS APPLIED TO CYLINDERS AND PUMPS WITHIN HYDROSTATIC DRIVE SYSTEMS
Abstract
In the current context, in which the analysis of the failures by infrared thermography for the hydraulically operated machines is an increasingly widespread internationally method, starting from the year 2016, in Romania, at INOE 2000 - IHP Bucharest the first thermographic analyzes were laid made on hydraulic equipment. It is known that by maintaining normal limits of variation of the temperature and viscosity of the hydraulic oil in the actuation plants, are created the conditions of the productivity increase and the decrease of the energy losses. The authors of this paper have therefore welcomed to the "20-20-20" Program (http://arpee.org.ro/strategia-europa-2020-programul-20-20-20/) which refers to the 20% reduction of greenhouse gas emissions (CO2 equivalent) compared to 1990, the final energy consumption reduction by 20% compared to 2005, by increasing the energy efficiency and increasing the share of renewable sources in the total energy mix to a minimum 20% until the year 2020. The method of infrared thermography, applied in predictive maintenance is a practical solution in the direction of the present requirements for reducing the CO2 mark and for protecting the environment because it is non-polluting, non-invasive and has a low energy consumption. In the paper, in the current state of researches, the authors gave as an example the application of the infrared thermography method to hydraulic pumps and cylinders on mobile or fixed machines. Using a special infrared thermal imaging camera, in general, it was possible to make correct assessments on the degree of wear and functionality on the analyzed volumetric machines, by studying the resulting thermal images, called thermograms. However, when measurement errors occurred, it was found, that these assessments became inadequates. For this reason, the authors of the paper are focused their researches towards the optimization of the above mentioned method, by developing of an innovative, non-polluting technology for thermographic investigations that aimed to eliminate these errors, based on a practical methodology for applying and accurate interpretation of the results thermograms, able to describe punctually the procedures to be followed by the maintenance activities involved staff.
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References3
Mihai A., Termografia ?n infraro?u. Fundamente, Tehnical Publisher, Bucharest 2005;
Smiley A., - 10 Ways to Check Hydraulic Systems with Thermal Imaging
Marinescu, A., D., Safta, C., A., Popescu T., C., -“ The advantages, errors and limitations of infrared thermography method used to the maintenance of hydraulic drive systems”, in Proceedings of the International multidisciplinary Conference”Professor Dorin Pavel – the founder of the Romanian Hydropower” – Sebe?, June (1-3), 2017, Section Hydrology, published in “?tiin?? ?i inginerie”, An XVII, vol. 32 page 65, BDI paper [4] Marinescu, A., D., Cristescu, C., Popescu, T., C., Safta, C., A., - “Assessing the opportunity to use the infrared thermography method for predictive maintenance of Hydrostatic Pumps”, in Proceedings of the 8 th International Conference for Energy and Environment (CIEM), University Politehnica of Bucharest, October (19-20), 2017, #127, in Section Hydro Power Engineering, pages (270-274), ISI paper https://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=6&SID=E3S6E2Jj8izpAruFkGz&page=1&doc=1 [5] Minkina, W., Dudzik, S., Infrared Thermography. Errors and Uncertainties. Ed. Wiley & Sons,2009
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