• Title/Summary/Keyword: Low pressure hose

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A Study on Swaging Characteristics of Band for Low Pressure Hose (저압 호스용 밴드의 체결특성에 관한 연구)

  • Kim Tyoung-Gyu;Kim Pil-Jong;Cho Seok-Beom;Kwon Boo-Kil
    • Journal of the Korean Institute of Gas
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    • v.9 no.3 s.28
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    • pp.32-37
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    • 2005
  • Hose bands, which are used in LPG (Liquefied Petroleum Gas) or LNG (Liquefied Natural Gas) facilities for home use to join low pressure hoses with fuse-cocks (or regulators), should give a tight connection to prevent a gas leakage from hose connection parts. In this paper, hydraulic pressure tests and pull force tests were carried out to evaluate the performance and swaging length of hose bands. Experimental results showed that the swaging force of ear type bands were higher than those of spring bands and also showed that the optimal swaging length was about 1${\~}$2 mm from the hose end.

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Life Prediction for High Pressure Hose of Power Steering System by Impulse Pressure Test (충격 압력을 받는 파워스티어링 시스템의 고압호스 수명 예측)

  • Lee, Gi-Chun;Kim, Hyoung-Eui;Park, Jong-Won;Lee, Jong-Hwang;Jeong, Won-Wook;Im, Young-Han;Hwang, Kwon-Tae;Lee, Young-Shin;Kim, Jae-Hoon
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.34 no.1
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    • pp.91-96
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    • 2010
  • The hydraulic hose can be divided with the low pressure, the medium pressure, and the high pressure hose according to the applied pressure. The power steering system in a passenger car can be divided with the high pressure and the low pressure hose. This study deals with the life prediction for high pressure hose to be given impulse pressure which was generated in turning the car. To adjust with external and internal condition, impulse pressure and oil temperature need to be controlled with impulse test system. The result, which is only controlled with the pressure and oil temperature, adapted Calibrated Accelerated Life Test(CALT) method to predict the life of the high pressure hose and analyzed the swagging part by finite element method during the impulse test.