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    • 4. 发明授权
    • Mechanical seal
    • 机械密封
    • US07883093B2
    • 2011-02-08
    • US11631045
    • 2005-07-01
    • Makoto UedaSatoshi FujiwaraMitsuru KudariMasanobu Ninomiya
    • Makoto UedaSatoshi FujiwaraMitsuru KudariMasanobu Ninomiya
    • F16J15/34
    • F16J15/342
    • A mechanical non-contact gas seal including a rotary scaling ring and a stationary sealing ring that is engaged and held in an inner periphery of a seal case by means of O-rings so as to move in an axial direction thereof. The O-rings engage with the outer periphery of the stationary sealing ring and come in press contact with the inner periphery of the seal case to seal a gap between the stationary sealing ring and the seal case while allowing the stationary sealing ring to move in an axial direction. A resin coating of a thickness in the range of 5 to 100 μm is formed on the inner periphery of the seal case at least within a range in which the O-rings relatively move with the movement of the stationary sealing ring.
    • 一种机械非接触式气体密封件,其包括旋转定标环和固定密封环,其通过O形环被接合并保持在密封壳体的内周中,以沿轴向方向移动。 O形环与固定密封环的外周接合,并与密封壳体的内周压接,以密封固定密封环与密封壳体之间的间隙,同时允许固定密封环移动 轴向。 至少在O形圈随着固定密封圈的运动相对移动的范围内,在密封件的内周上形成厚度在5至100μm范围内的树脂涂层。
    • 5. 发明申请
    • Static Pressure Type Non-Contact Gas Seal
    • 静压型非接触式气密封
    • US20080111315A1
    • 2008-05-15
    • US11664780
    • 2005-07-15
    • Satoshi FujiwaraMitsuru KudariMasanobu Ninomiya
    • Satoshi FujiwaraMitsuru KudariMasanobu Ninomiya
    • F16J15/34
    • F16J15/342F16J15/3448
    • The present invention provides a static pressure type non-contact gas seal which, even when supply of seal gas 6 to the space between sealing end surfaces 3a and 4a has stopped unexpectedly, can be safely used with no possibility that the sealing end surfaces 3a and 4a collide severely against each other and consequently the sealing end surfaces 3a and 4a are damaged or destructed. In this static pressure type non-contact gas seal, the seal gas 6 is supplied to the space between the sealing end surfaces 3a and 4a from a seal gas passage 5, thereby generating an opening force that acts on the stationary sealing ring 4 in a direction that the space between the sealing end surfaces 3a and 4a is opened. An annular-spaced back pressure chamber 25 blocked by two O-rings 12 and 13 is formed between the facing peripheral surfaces of a seal case 1 and the stationary sealing ring 4, to introduce the seal gas 6 to be supplied to the seal gas passage 5 into the back pressure chamber 25, thereby generating a closing force that maintain the balance with the opening force, as a back pressure acting on the stationary sealing ring 4. A spring is not used as a means for generating the closing force.
    • 本发明提供一种静压式非接触式气体密封件,即使在密封端面3a和4a之间的空间的密封气体6意外停止的情况下供给密封气体6,也可以安全地使用密封端面 3 a和4 a严重相互碰撞,因此密封端面3a和4a被损坏或破坏。 在这种静压型非接触式气体密封件中,密封气体6从密封气体通道5供给到密封端面3a和4a之间的空间,从而产生作用在固定密封环4上的打开力 在密封端面3a和4a之间的空间打开的方向上。 在密封壳体1的相对周向表面和固定密封环4之间形成有由两个O形环12和13阻挡的环形间隔背压室25,以将要供给到密封气体通道的密封气体6引入 从而产生作为作用在固定密封环4上的背压而保持与打开力平衡的关闭力。弹簧不用作用于产生闭合力的装置。
    • 6. 发明申请
    • Mechanical seal
    • 机械密封
    • US20090189355A1
    • 2009-07-30
    • US11631045
    • 2005-07-01
    • Makoto UedaSatoshi FujiwaraMitsuru KudariMasanobu Ninomiya
    • Makoto UedaSatoshi FujiwaraMitsuru KudariMasanobu Ninomiya
    • F16J15/16
    • F16J15/342
    • A mechanical seal 4 is a static pressure type non-contact gas seal, including a rotary sealing ring 5 that is fixed to a rotating shaft, and a stationary sealing ring 7 that is engaged and held in an inner periphery of a seal case 6 made of a metal by means of O-rings 12 so as to move in an axial direction thereof. The O-rings 12 are held engaging with the outer periphery of the stationary sealing ring 7, and come in press contact with the inner periphery of the seal case 6 so as to give a secondary seal to a gap between the stationary sealing ring 7 and the seal case 6, while allowing the stationary sealing ring 7 to move ih ng a thickness in the range of 5 to 100 μm is formed on the inner periphery of the seal case 6 at least within a range in which the O-rings 12 relatively move in accordance with the movement of the stationary sealing ring 7 in the axial direction.
    • 机械密封件4是静压型非接触式气体密封件,其包括固定到旋转轴的旋转密封环5和固定密封环7,其固定并保持在密封壳体6的内周中 的金属通过O形环12沿其轴向方向移动。 O形圈12与固定密封环7的外周保持接合,并与密封壳6的内周压接,从而对固定密封环7和 至少在O形圈12相对的范围内,密封壳体6同时允许固定密封环7移动至厚度在5至100μm的范围内。 根据固定密封环7沿轴向的运动而移动。
    • 7. 发明授权
    • Static pressure type non-contact gas seal
    • 静压式非接触式气体密封
    • US07726659B2
    • 2010-06-01
    • US11664780
    • 2005-07-15
    • Satoshi FujiwaraMitsuru KudariMasanobu Ninomiya
    • Satoshi FujiwaraMitsuru KudariMasanobu Ninomiya
    • F16J15/34
    • F16J15/342F16J15/3448
    • The present invention provides a static pressure type non-contact gas seal which, even when supply of seal gas 6 to the space between sealing end surfaces 3a and 4a has stopped unexpectedly, can be safely used with no possibility that the sealing end surfaces 3a and 4a collide severely against each other and consequently the sealing end surfaces 3a and 4a are damaged or destructed. In this static pressure type non-contact gas seal, the seal gas 6 is supplied to the space between the sealing end surfaces 3a and 4a from a seal gas passage 5, thereby generating an opening force that acts on the stationary sealing ring 4 in a direction that the space between the sealing end surfaces 3a and 4a is opened. An annular-spaced back pressure chamber 25 blocked by two O-rings 12 and 13 is formed between the facing peripheral surfaces of a seal case 1 and the stationary sealing ring 4, to introduce the seal gas 6 to be supplied to the seal gas passage 5 into the back pressure chamber 25, thereby generating a closing force that maintain the balance with the opening force, as a back pressure acting on the stationary sealing ring 4. A spring is not used as a means for generating the closing force.
    • 本发明提供了一种静压式非接触式气体密封件,即使在密封端面3a,4a之间的空间向密封端面3a和4a之间的空间供给已经意外停止的情况下,也可以安全地使用密封端面3a和 4a严重地相互碰撞,因此密封端面3a和4a被破坏或破坏。 在这种静压型非接触式气体密封件中,密封气体6从密封气体通道5供给到密封端面3a,4a之间的空间,从而产生作用在固定密封环4上的打开力 打开密封端面3a,4a之间的空间的方向。 在密封壳体1的相对周向表面和固定密封环4之间形成有由两个O形环12和13阻挡的环形间隔背压室25,以将要供给到密封气体通道的密封气体6引入 从而产生作为作用在固定密封环4上的背压而保持与打开力平衡的关闭力。弹簧不用作用于产生闭合力的装置。