Use of pumping units equipped with oscillating hydraulic pressure intensifiers for displacement of cylinders with heavy loads over the entire stroke

• Autorzy: Popescu Teodor-Costinel , Chiriță Alexandru Polifron , Popescu Ana-Maria Carla , Popescu Alina-Iolanda

Identyfikatory

DOI

10.32056/KOMAG2022.4.6

• Języki publikacji: EN

Abstrakty

EN

Working and moving in confined, limited and narrow spaces, specific to underground mining activities, also requires the use of hydraulically operated equipment, capable of developing large forces, with small dimensions. An example of such equipment includes pumping units comprising low-pressure electric pumps and oscillating hydraulic pressure intensifiers. They use low pressure in the primary side of the intensifier and generate high pressure in the secondary side of the intensifier. Such pumping units are usually used to achieve and maintain high pressure, either in the volumes of closed spaces (in strength tests on pipes and tanks) or at the end of the active stroke of hydraulic cylinders (in hydraulic presses). On an experimental laboratory bench, which comprises a test cylinder, powered by a pumping unit, equipped with an oscillating hydraulic pressure intensifier, and a load cylinder, powered by another pumping unit, with the possibility of load control, the authors show that: the application range of these pumping units can be extended in the third direction, too, useful for underground mining activities, namely for drive of hydraulic cylinders with low gauge / displacement speeds and constant high load (high working pressure) over the entire working stroke length; the uniformity of displacement of these cylinders, with load throughout the stroke length, which are powered and driven with such pumping units, is slightly affected by the pulsating mode of operation of the hydraulic pressure intensifier. A set of experimental measurement results is presented for a constant value of the load over the entire displacement stroke of the test cylinder.

Słowa kluczowe

EN

low-pressure pumping unit; oscillating hydraulic pressure intensifier; high pressure; hydraulic cylinder

• Wydawca: Instytut Techniki Górniczej KOMAG
• Czasopismo: Mining Machines
• Rocznik: 2022
• Tom: vol. 40, iss. 4
• Strony: 238--248
• Opis fizyczny: Bibliogr. 20 poz., rys., wykr., zdj.

Twórcy

autor

Popescu Teodor-Costinel

• National Institute of Research & Development for Optoelectronics / INOE 2000-subsidiary Hydraulics and Pneumatics Research Institute –IHP Bucharest, Romania

autor

Chiriță Alexandru Polifron

• National Institute of Research & Development for Optoelectronics / INOE 2000-subsidiary Hydraulics and Pneumatics Research Institute –IHP Bucharest, Romania

autor

Popescu Ana-Maria Carla

• National Institute of Research & Development for Optoelectronics / INOE 2000-subsidiary Hydraulics and Pneumatics Research Institute –IHP Bucharest, Romania

autor

Popescu Alina-Iolanda

• National Institute of Research & Development for Optoelectronics / INOE 2000-subsidiary Hydraulics and Pneumatics Research Institute –IHP Bucharest, Romania

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu „Społeczna odpowiedzialność nauki” - moduł: Popularyzacja nauki i promocja sportu (2022-2023)