A rectangular tube pressure balance type expansion joint, used to solve the export section of the turbine operation vibration and noise exceed the standard problem of the expansion. The technical scheme is that it comprises a corrugated pipe and corrugated pipe connecting the curved pipe, the improved elbow side of the curved tube on both sides is provided with a strong supporting component, solid components distributed in rows on the curve. The present invention in the expansion joint work of the vibration of the main parts of the elbow - side added point support, according to the distribution of strong involute components, the elbow side by a large plane, shortening or split into several unit plane, thus changing the bend vibration frequency side plates, and increase the inherent TRT a device of frequency difference, the realization of TRT unit turbine system running vibration and noise reduction effect, greatly improving the rectangular pressure balanced expansion section running safety and quality.
【技术实现步骤摘要】
本专利技术涉及一种膨胀节,特别是抗震动效果好的矩形曲管压力平衡型膨胀 节,属管件
技术介绍
在钢铁冶炼工艺中,现代高炉炉顶中贮存有大量煤气,其压力高达0. 15-0. 25Mpa, 能够产生大量的势能。利用高炉炉顶余热,将高炉煤气导入透平机作功,驱动发电机完成能 量回收,简称 TRT (Blast Furnace Top Gas Recovery Turbine Unit,高炉煤气余压透平 发电装置)装置。TRT主要是应用差压发电,所以最主要的因素是进出口差压,压力差越高 发电越好。透平机出口采用膨胀节作为压力、温度补偿装置。透平机出口是矩形结构,出口 采用的膨胀节为矩形曲管压力平衡型膨胀节。曲管曲管左右各有一件弯头侧板,为了减小 膨胀节的自重和安装空间,所述弯头侧板采用薄壁板。由于弯头侧板面积大、壁厚薄,加之 TRT出口的压力波动,会给膨胀节的矩形曲管带来运行中震动严重、噪声超标等问题,这些 问题会对TRT透平机运行造成安全隐患。
技术实现思路
本专利技术用于解决上述已有技术之缺陷而提供一种在不增加弯头侧板壁厚的条件 下,有效降低震动和噪声的矩形曲管压力 ...
【技术保护点】
一种矩形曲管压力平衡型膨胀节,它包括波纹管(1)和与波纹管连接的曲管(3),其特征在于:所述曲管(3)两侧的弯头侧板(4)上设有点式支撑的强固组件,强固组件分布在几排曲线(7)上。
【技术特征摘要】
【专利技术属性】
技术研发人员:孟宪春,魏守亮,王春月,
申请(专利权)人:秦皇岛北方管业有限公司,
类型:发明
国别省市:13
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