As a core equipment of pressure vessels,the ultra-high pressure polyethylene reactor operates in an extremely high-pressure environment(with a test pressure up to 370 MPa),and has extremely high requirements for sealing performance.Its sealing effect directly relates to the safety and efficiency of the container's operation and is a key indicator for assessing the compliance of the container.To balance economy and rationality,this study adopts a combined sealing method,achieving sealing through the collaborative work of a metal back ring,a wavy ring,and a non-metallic sealing gasket.During the assembly process,special assembly lifting platforms and other technological means are used to strictly control the concentricity,levelness,and coaxiality accuracy.Experimental verification shows that helium leak tests conducted at 6 MPa(pure helium),20 MPa,and 40 MPa pressures meet the sealing performance requirements,and the leakage rate complies with the standards.This sealing assembly solution innovatively solves the assembly technical difficulties,ensuring that the sealing performance meets the standards while verifying the technical feasibility and practical value of the high-pressure sealing assembly process.It provides an effective reference for the sealing assembly of similar high-pressure reaction vessels.
关键词
超高压/密封性/装配工艺/组合密封
Key words
ultra-high pressure/tightness/assembly process/combination seal
维普
万方数据