A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PIPING STRUCTURE WITH CHECK-VALVE
PROBLEM TO BE SOLVED: To provide a piping structure including a check-valve closing a closed part with its resiliency in which the check-valve is prevented from generating whistle-like sound when negative pressure is generated at a downstream side of the check-valve.SOLUTION: In a piping structure with a check-valve 1 installed in piping where fluid passes to prevent inverse flow in the piping, the check valve 1 has a closing part formed by an abutting surface made of elastic raw material that is abutted against a wall surface, the closing part closes a piping flow passage while the abutting surface abuts against the wall surface under a state in which stress does not act against the check-valve 1. When an upstream side of the check-valve shows a higher pressure as compared with that of the downstream side, the abutting surface is moved away from the wall surface to open the piping flow passage to allow fluid to pass from the upstream side to the downstream side. An intake part 3 for intaking surrounding air outside the piping is provided at the downstream side of the check-valve 1.SELECTED DRAWING: Figure 2
【課題】弾性によって閉塞部を閉塞する逆流防止弁を備えた配管構造において、逆流防止弁の下流側で負圧が発生した際に、逆流防止弁が笛様音を発生することを防止する逆流防止弁を備えた配管構造を提供する。【解決手段】流体が通過する配管内に配置されて配管内の逆流を防止する逆流防止弁１を備えた配管構造において、逆流防止弁１は、弾性を有する素材からなる当接面が、壁面に当接して形成される閉塞部を有してなり、該閉塞部は、当接面の弾性により、逆流防止弁１に応力が作用しない状態では当接面が壁面に当接して配管流路を閉塞し、逆流防止弁の上流側が、下流側に比べて高圧となった際に、当接面が壁面から離間して配管流路を開口し、上流側から下流側への流体の通過を許容するように構成されてなり、更に、該逆流防止弁１の下流側に配管外の大気を吸気する吸気部３を備えて構成する。【選択図】図２
PIPING STRUCTURE WITH CHECK-VALVE
PROBLEM TO BE SOLVED: To provide a piping structure including a check-valve closing a closed part with its resiliency in which the check-valve is prevented from generating whistle-like sound when negative pressure is generated at a downstream side of the check-valve.SOLUTION: In a piping structure with a check-valve 1 installed in piping where fluid passes to prevent inverse flow in the piping, the check valve 1 has a closing part formed by an abutting surface made of elastic raw material that is abutted against a wall surface, the closing part closes a piping flow passage while the abutting surface abuts against the wall surface under a state in which stress does not act against the check-valve 1. When an upstream side of the check-valve shows a higher pressure as compared with that of the downstream side, the abutting surface is moved away from the wall surface to open the piping flow passage to allow fluid to pass from the upstream side to the downstream side. An intake part 3 for intaking surrounding air outside the piping is provided at the downstream side of the check-valve 1.SELECTED DRAWING: Figure 2
【課題】弾性によって閉塞部を閉塞する逆流防止弁を備えた配管構造において、逆流防止弁の下流側で負圧が発生した際に、逆流防止弁が笛様音を発生することを防止する逆流防止弁を備えた配管構造を提供する。【解決手段】流体が通過する配管内に配置されて配管内の逆流を防止する逆流防止弁１を備えた配管構造において、逆流防止弁１は、弾性を有する素材からなる当接面が、壁面に当接して形成される閉塞部を有してなり、該閉塞部は、当接面の弾性により、逆流防止弁１に応力が作用しない状態では当接面が壁面に当接して配管流路を閉塞し、逆流防止弁の上流側が、下流側に比べて高圧となった際に、当接面が壁面から離間して配管流路を開口し、上流側から下流側への流体の通過を許容するように構成されてなり、更に、該逆流防止弁１の下流側に配管外の大気を吸気する吸気部３を備えて構成する。【選択図】図２
PIPING STRUCTURE WITH CHECK-VALVE
逆流防止弁を備えた配管構造
KUBONAI HIDEKI (author) / NISHINA TAKASHI (author)
2016-12-15
Patent
Electronic Resource
Japanese