Analysis Of High Temperature And Pressure Rotating Compensator

The compensator is an important device of pipe thermal compensation which mounted on the heat pipeline. Compared with other types of compensation, the rotating compensation have the advantage of large amount of compensation, good sealing performance, long-term operation without maintenance, suitable for high temperature and pressure, so it has been widely used. But during the run at the scene, there have been compensation burst and gas leakage. After a review of relevant literature, research for stress distribution, dangerous position and sealing performance of the rotating compensation at high temperatures and pressure are less. In this paper, calculate the basic parameters of the rotating compensation. By comparing the analysis of four medels, propose the optimal method of simulation pipeline and rotating compensator integrated model. Analyze the dangerous position and the sealing performance of rotating compensator, and to verify based on field experiments. And complete the compilation of rotating compensator aided design software.By calculating the basic parameters of the rotating compensation and associated pipeline, get the effect of different swing-arm length, different pipeline length for the pipeline global deformation. Establish four different models of the overall pipeline, comparative analysis with the theoretical calculation, propose an optimal method of simulate the rotating compensation and associated piping. Analyze the distribution trends of the reaction force at the support point and the influence of friction coefficient on the performance of the rotating compensation. Completed the modal analysis of pipeline, providing reference of prevent pipe resonance and reduce noise.Analyze strength and sealing performance of the rotating compensator by using finite element analysis software, and optimize the structure. It is conclude that, large stress at diameter change position of sealing seat, where is the dangerous position. Explosion accident usually occurs in here on site. To optimize the structure, rounded on the original structure at there is R40mm, change to R45mm after optimized. At the design conditions, contact pressure of the gasket is 42.61-81.79MPa, minimal contact pressure is greater than three times of the design pressure, sealing performance is reliable, leakage does not occur in the case of high pressure. In the process of pressure rise, when the pressure is lower than 3MPa, seal packing acts as a seal, after the pressure is greater than 3MPa, the gasket acts as a seal instead of seal packing.Stress test for the rotating compensation, finite element simulation and experimental data is consistent, and the error is small, verify the accuracy of the finite element simulation. Use Visual Basic 6.0 development tools, compiled aided design software of the rotating compensation, improve the reliability of the design and then reduce the workload.