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2013 Fiscal Year Final Research Report

Optimization of Hole Configuration Parameters for Design of Damper Seals with Square-Hole Pattern

Research Project

  • PDF
Project/Area Number 23560157
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Design engineering/Machine functional elements/Tribology
Research InstitutionNagaoka University of Technology

Principal Investigator

KANEKO Satoru  長岡技術科学大学, 工学部, 教授 (90161174)

Co-Investigator(Kenkyū-buntansha) TAURA Hiroo  長岡技術科学大学, 工学部, 准教授 (20334691)
Project Period (FY) 2011 – 2013
Keywords四角穴シール / 漏れ流量 / 動特性係数 / ふれまわり周波数比 / 入口旋回流速度 / 穴形状パラメータ / 穴断面積 / 穴数
Research Abstract

The axial leakage flow rate Q, the dynamic coefficients and the whirl-frequency ratio WFR of liquid annular seals are investigated for the three hole-pattern parameters formed in the stator surface: the cross-sectional area Sd of hole, total number Nd of holes, combinations of Nd and Sd under a constant total cross-sectional area of holes. Here, WFR corresponds to an upper limit of rotor whirling velocity at which the dynamic fluid force in the seal clearance enhances the whirling motion and smaller value of WFR is desirable due to narrowing the instability range of whirling velocity. The results show that increasing Nd and using the combinations of large Nd and small Sd yield a lower Q and smaller WFR, and reduce the quantitative effect of the inlet swirl velocity on WFR. Hence, these hole-patterns contribute to improving the efficiency and stability margin of pumps from the viewpoint of reducing the leakage flow rate and suppressing the rotor whirling motion.

  • Research Products

    (6 results)

All 2014 2013 2012

All Presentation (6 results)

  • [Presentation] ねじ溝付きシールの力学的特性に関する実験的研究2014

    • Author(s)
      金子 覚,田浦裕生
    • Organizer
      日本機械学会北陸信越支部第51期総会・講演会
    • Place of Presentation
      富山県立大学工学部(富山県)
    • Year and Date
      2014-03-08
  • [Presentation] ねじ溝付きシールの静特性に関する数値解析2014

    • Author(s)
      金子 覚,田浦裕生
    • Organizer
      日本機械学会北陸信越支部第51期総会・講演会
    • Place of Presentation
      富山県立大学工学部(富山県)
    • Year and Date
      2014-03-08
  • [Presentation] 四角穴パターンを有する液膜シールの静および動特性に関する数値解析2013

    • Author(s)
      金子 覚,田浦裕生
    • Organizer
      日本機械学会機械力学・計測制御部門D&D2013
    • Place of Presentation
      九州産業大学工学部(福岡県)
    • Year and Date
      2013-08-27
  • [Presentation] 四角穴シールにおける穴寸法が力学的特性に及ぼす影響2013

    • Author(s)
      金子 覚,田浦裕生
    • Organizer
      日本機械学会北陸信越支部第50期総会・講演会
    • Place of Presentation
      福井大学工学部(福井県)
    • Year and Date
      2013-03-09
  • [Presentation] 四角穴シールの静および動特性2012

    • Author(s)
      金子 覚,田浦裕生
    • Organizer
      日本機械学会2012年度年次大会
    • Place of Presentation
      金沢大学工学部(石川県)
    • Year and Date
      2012-09-10
  • [Presentation] 四角穴シールの力学的特性に関する数値解析2012

    • Author(s)
      金子 覚,田浦裕生
    • Organizer
      日本機械学会北陸信越支部第49期総会・講演会
    • Place of Presentation
      金沢工業大学(石川県)
    • Year and Date
      2012-03-10

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Published: 2015-07-16  

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