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A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To provide an attenuation valve for making a damper exhibit high damping force to earthquake motion of large amplitude in which a piston speed reaches a high speed zone without degrading base isolating effect, and to provide a damper capable of exhibiting high damping force to the earthquake motion of large amplitude in which the piston speed reaches the high speed zone without degrading base isolating effect.SOLUTION: An attenuation valve V includes a low pressure loss valve VL, and a normally closed-type high pressure loss valve VH disposed in parallel with the low pressure loss valve VL and having pressure loss larger than the pressure loss valve VL, and the low pressure loss valve VL is closed in accompany with increase of upstream pressure.SELECTED DRAWING: Figure 1
【課題】免震効果を損なわず、ピストン速度が高速域に達する大振幅の地震動に対して高い減衰力をダンパに発揮させる減衰弁の提供であり、また、免震効果を損なわず、ピストン速度が高速域に達する大振幅の地震動に対して高い減衰力を発揮可能なダンパの提供である。【解決手段】本発明の減衰弁Ｖは、低圧力損失弁ＶＬと、低圧力損失弁ＶＬと並列に設けられて低圧力損失弁ＶＬより圧力損失が大きいノーマルクローズ型の高圧力損失弁ＶＨとを備えており、低圧力損失弁ＶＬが上流の圧力の上昇に伴って閉弁する。【選択図】図１
PROBLEM TO BE SOLVED: To provide an attenuation valve for making a damper exhibit high damping force to earthquake motion of large amplitude in which a piston speed reaches a high speed zone without degrading base isolating effect, and to provide a damper capable of exhibiting high damping force to the earthquake motion of large amplitude in which the piston speed reaches the high speed zone without degrading base isolating effect.SOLUTION: An attenuation valve V includes a low pressure loss valve VL, and a normally closed-type high pressure loss valve VH disposed in parallel with the low pressure loss valve VL and having pressure loss larger than the pressure loss valve VL, and the low pressure loss valve VL is closed in accompany with increase of upstream pressure.SELECTED DRAWING: Figure 1
【課題】免震効果を損なわず、ピストン速度が高速域に達する大振幅の地震動に対して高い減衰力をダンパに発揮させる減衰弁の提供であり、また、免震効果を損なわず、ピストン速度が高速域に達する大振幅の地震動に対して高い減衰力を発揮可能なダンパの提供である。【解決手段】本発明の減衰弁Ｖは、低圧力損失弁ＶＬと、低圧力損失弁ＶＬと並列に設けられて低圧力損失弁ＶＬより圧力損失が大きいノーマルクローズ型の高圧力損失弁ＶＨとを備えており、低圧力損失弁ＶＬが上流の圧力の上昇に伴って閉弁する。【選択図】図１
ATTENUATION VALVE AND DAMPER
減衰弁およびダンパ
NAKAHARA MANABU (author)
2018-08-30
Patent
Electronic Resource
Japanese
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