道岔区聚氨酯固化道床烘干装置的研发

Research and Development of Drying Device for Polyurethane Solidified Ballast Bed in Turnout Area

针对道岔区聚氨酯固化道床施工提出一种道床烘干技术。通过高精度、智能化的道床温湿度检测,实时监控烘干效果。本文首先介绍了道床烘干装置的总体设计,然后对道床烘干数值模拟结果和试验线上实测结果进行了分析。结果表明:当密封罩内分风结构导流角为100°时,密封罩的7个出风口风速均匀;烘干约10 min时道床烘干深度可达350 mm,道床相对湿度约20%,满足聚氨酯施工要求;与现有设备相比,该道床烘干装置具有小型化、快捷化的特点,可实现对道岔区等复杂线路区段的道床烘干作业。

This paper presented a drying technique for polyurethane solidified ballast bed construction in turnout area.Through high-precision,intelligent temperature and humidity detection of ballast bed,real-time monitoring of drying effect was carried out.This paper first introduced the overall design of the ballast bed drying device,and then analyzed the numerical simulation results of the ballast bed drying and the measured results of test line.The results show that when the diversion angle of the air distribution structure in the seal cover is 100°,the wind speed of the seven air outlets of the seal cover is uniform,when drying time is about 10 minutes,the drying depth of the ballast bed can reach350 mm and the relative humidity of the ballast bed is about 20%,which could meet the construction requirements of polyurethane.Compared with the existing equipment,the ballast bed drying device has the characteristics of miniaturization and rapidity,which can realize the ballast bed drying operation in the turnout area and other complex line sections.