Research On Compressive Strength And Axial Sliding Performance Test Device Of Directly Buried Steam Pipe

A lot of steam, hot water, and other kinds of heat medium are used in industrial productionand people’s life, and these heat medium are delivered to the user mostly by the directly buriedsteam pipeline. The overall compressive strength and axial sliding performance test device isthe key to ensure the safe use of directly buried steam pipe. It has great practical significance toimprove the automation and intelligent level of the test device for ensuring the quality andefficiency of the test. Aiming at the problems of the existing type test device, this paper putforward the design requirements of the overall compressive strength and axial slidingperformance test device of directly buried steam pipe, and completed the main tasks as follows:At first, the structure characteristics of domestic and foreign existing overall compressivestrength and axial sliding performance test device of directly buried steam pipe were compared.According to design requirements, the overall design scheme of completing the test and loadingand unloading sand in different position with sand suction machine and sand box flat car wasput forward, which included sand box flat car, push and tensile testing machine, hydraulicloading device, sand suction system and job ladder five parts.Secondly, the mechanism of the test device was designed. Solidworks was used in3Ddrawing of the device and their components, and AutoCAD was used to transform it intotwo-dimensional engineering drawings. Knowledge of soil mechanics was used to analyze andcalculate the gravity stress of sand as well as the earth pressure inside the sand box. ANSYSwas used in the static analysis of the sand box to check the strength and stiffness. Secondarydeveloping for full size plates of the test device had been done by using Visual Basic softwareand Solidworks API to parameterize the design of parts, shorten the new size plate’sdevelopment time and improve the design quality.Finally, the control system of this test device was designed. Based on the two-stage controlsolution, the system is made up of computer installed software of Kingview and PLC (SiemensS7-200). The system monitored and controlled the test device real-time through the exchange ofdata between PC and PLC to make sure the data is accurate and real-time, and the result of testprocess was efficient and in a high quality.