Analysis on performance and test of a new type of ultra-high pressure pipe joint
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摘要
Analysis as well as application of ultra-high pressure hydraulic system and elements has become a trend. The structure and operation principle of a new type of ultra-high pressure pipe joint is introduced. The structure of the new type of ultra-high pressure pipe joint is simple and is easy to be produced. The finite element model on two working conditions( preload condition with 30 N·m torque and static-loading condition with 70 MPa pressure) is built and computed. The width of contact area,the equivalent stress status,as well as the contact pressure status are plotted and analyzed. According to the national standard,test on air-tightness,blasting,and cyclic endurance is conducted and the results show that the new type of ultra-high pressure pipe joint has the sealability for ultra-high pressure up to 70 MPa,and the DN6 ultra-high pressure pipe joint can provide effective seal under70 MPa fluid pressure. The research can provide a thinking and method on designing ultra-high pressure pipe joint and push forward the development of ultra-high pressure hydraulic system.
Analysis as well as application of ultra-high pressure hydraulic system and elements has become a trend. The structure and operation principle of a new type of ultra-high pressure pipe joint is introduced. The structure of the new type of ultra-high pressure pipe joint is simple and is easy to be produced. The finite element model on two working conditions( preload condition with 30 N·m torque and static-loading condition with 70 MPa pressure) is built and computed. The width of contact area,the equivalent stress status,as well as the contact pressure status are plotted and analyzed. According to the national standard,test on air-tightness,blasting,and cyclic endurance is conducted and the results show that the new type of ultra-high pressure pipe joint has the sealability for ultra-high pressure up to 70 MPa,and the DN6 ultra-high pressure pipe joint can provide effective seal under70 MPa fluid pressure. The research can provide a thinking and method on designing ultra-high pressure pipe joint and push forward the development of ultra-high pressure hydraulic system.
Analysis as well as application of ultra-high pressure hydraulic system and elements has become a trend. The structure and operation principle of a new type of ultra-high pressure pipe joint is introduced. The structure of the new type of ultra-high pressure pipe joint is simple and is easy to be produced. The finite element model on two working conditions( preload condition with 30 N·m torque and static-loading condition with 70 MPa pressure) is built and computed. The width of contact area,the equivalent stress status,as well as the contact pressure status are plotted and analyzed. According to the national standard,test on air-tightness,blasting,and cyclic endurance is conducted and the results show that the new type of ultra-high pressure pipe joint has the sealability for ultra-high pressure up to 70 MPa,and the DN6 ultra-high pressure pipe joint can provide effective seal under70 MPa fluid pressure. The research can provide a thinking and method on designing ultra-high pressure pipe joint and push forward the development of ultra-high pressure hydraulic system.
引文
[1]Jiao J.Application of extra high pressure hydraulic technology[J].Chinese Hydraulics&Pneumatics,2010(8):76-77(in Chinese)
[2]Li R,Liu X,Zhang S,et al.Numerical analysis on delta-ring seal structure of ultra high pressure vessel employed in food processing[J].Applied Mechanics&Materials,2013,303-306:2839-2842
[3]Hu Y.Study for pressurization system of ultrahigh pressure hydraulic cylinder test-bed:[Master degree dissertation][D].Qinhuangdao:College of Mechanical Engineering,Yanshan University,2014.5-6(in Chinese)
[4]Wang J.Present status and development tendency of superpressure hydraulic technique both at home and abroad[J].China Heavy Equipment,2013(2):6-7(in Chinese)
[5]China Hydraulics Pneumatics&Seals Association.Technology review of PTC ASIA 2015[J].Hydraulics Pneumatics&Seals,2016(1):1-12(in Chinese)
[6]Wang F.Present developing situation of high pressure hydraulic components and construction of test platforms in China[J].Construction Machinery and Equipment,2012,43(10):1-7(in Chinese)
[7]Ouyang X,Fang X,Zhu Y,et al.Overview of aviation hydraulic fittings[J].China Mechanical Engineering,2015,26(16):2262-2271(in Chinese)
[8]Upul S F,George K.Analysis of end fitting barrier seal performance in high pressure unbonded flexible pipes[C].In:Proceedings of the ASME 2014 33rd International Conference on Ocean,San Francisco,USA,2014.1-8
[9]Qiao P.Discussed and application of super high pressure hydraulic seal method[J].Hydraulics Pneumatics&Seals,2014(9):55-57(in Chinese)
[10]Chen S.Research on marine high pressure pipe joint of sleeve type and It’s mechanical equipment coordination:[Master degree dissertation].Zhoushan:College of Shipbuilding Engineering,Zhejiang Ocean University,2013.10-13(in Chinese)
[11]Zhou X,Hong X,Zhang Y,et al.Experimental studies on seal performance of spherical sealing joint[J].Spacecraft Environment Engineering,2006,23(1):56-59(in Chinese)
[12]Wang J,Liu J,Chen S.Sealing performance analysis and mechanical property testing of spherical tube connector[J].Journal of Rocket Propulsion,2010,36(6):36-41(in Chinese)
[13]Li X,W Y,Liu S,et al.Leakage rate of spherical sealing joint for engines in spacecraft propulsion system[J].Spacecraft Environment Engineering,2014,31(4):646-650(in Chinese)
[14]Ran G.Robust design method of the sealing pipeline joint structure with double-cone pipe union:[Master degree dissertation][D].Mianyang:China Academy of Engineering Physics,2005.2-3(in Chinese)
[15]Buchter,H.H.Industrial Sealing Technology[M].Beijing:Chemical Industry Press,1988.8
[2]Li R,Liu X,Zhang S,et al.Numerical analysis on delta-ring seal structure of ultra high pressure vessel employed in food processing[J].Applied Mechanics&Materials,2013,303-306:2839-2842
[3]Hu Y.Study for pressurization system of ultrahigh pressure hydraulic cylinder test-bed:[Master degree dissertation][D].Qinhuangdao:College of Mechanical Engineering,Yanshan University,2014.5-6(in Chinese)
[4]Wang J.Present status and development tendency of superpressure hydraulic technique both at home and abroad[J].China Heavy Equipment,2013(2):6-7(in Chinese)
[5]China Hydraulics Pneumatics&Seals Association.Technology review of PTC ASIA 2015[J].Hydraulics Pneumatics&Seals,2016(1):1-12(in Chinese)
[6]Wang F.Present developing situation of high pressure hydraulic components and construction of test platforms in China[J].Construction Machinery and Equipment,2012,43(10):1-7(in Chinese)
[7]Ouyang X,Fang X,Zhu Y,et al.Overview of aviation hydraulic fittings[J].China Mechanical Engineering,2015,26(16):2262-2271(in Chinese)
[8]Upul S F,George K.Analysis of end fitting barrier seal performance in high pressure unbonded flexible pipes[C].In:Proceedings of the ASME 2014 33rd International Conference on Ocean,San Francisco,USA,2014.1-8
[9]Qiao P.Discussed and application of super high pressure hydraulic seal method[J].Hydraulics Pneumatics&Seals,2014(9):55-57(in Chinese)
[10]Chen S.Research on marine high pressure pipe joint of sleeve type and It’s mechanical equipment coordination:[Master degree dissertation].Zhoushan:College of Shipbuilding Engineering,Zhejiang Ocean University,2013.10-13(in Chinese)
[11]Zhou X,Hong X,Zhang Y,et al.Experimental studies on seal performance of spherical sealing joint[J].Spacecraft Environment Engineering,2006,23(1):56-59(in Chinese)
[12]Wang J,Liu J,Chen S.Sealing performance analysis and mechanical property testing of spherical tube connector[J].Journal of Rocket Propulsion,2010,36(6):36-41(in Chinese)
[13]Li X,W Y,Liu S,et al.Leakage rate of spherical sealing joint for engines in spacecraft propulsion system[J].Spacecraft Environment Engineering,2014,31(4):646-650(in Chinese)
[14]Ran G.Robust design method of the sealing pipeline joint structure with double-cone pipe union:[Master degree dissertation][D].Mianyang:China Academy of Engineering Physics,2005.2-3(in Chinese)
[15]Buchter,H.H.Industrial Sealing Technology[M].Beijing:Chemical Industry Press,1988.8