The utility model discloses a heat transfer bridge type sensor for measuring the depth of scouring and silting around the steel pipe pile of a bridge. The utility model is based on the following principle: heat source and temperature sensing points are located at both ends of the heat source heat transfer, heat transfer to the temperature after thermal bridge, when the bridge is in the water, the heat loss was positively correlated with the flow velocity, and was significantly higher than that of soil. The utility model comprises a shell, a heating block, a temperature probe and the like. A heating block is arranged at the center of the side wall of the shell, and a temperature probe is arranged at each midpoint of the four sides. The heating block as the heat source, shell is used as the bridge, the heat is transferred to the temperature probe (temperature sensing points). Enter the rated current, so that the heating block continues to heat, and by measuring the temperature probe in the process of heating changes in temperature, speed and amplitude, you can distinguish the sensor is in the water or soil. A number of sensors are installed at different depths of the steel pipe pile body, and the interface between the water body and the soil mass can be distinguished. Finally, the scour and silting depth around the steel pipe pile of the bridge can be determined.
【技术实现步骤摘要】
测量桥梁钢管粧冲淤的传热桥式传感器
本技术涉及一种水利工程监测装置,具体涉及一种测量桥梁钢管桩冲淤的传热桥式传感器。
技术介绍
钢管桩作为一种桥梁的基础形式,已广泛应用于各类桥梁的施工建设当中,而对于桥梁钢管桩周边冲淤深度的监测,还仍然停留在水位计等自动化水平很低的阶段,无法实现全天候的自动监测。一些新型的冲淤传感器,虽然提供了自动化监测的可能,但是传感器安装复杂,不利于技术的大面积推广。热量散失速度与所处环境密切相关,水体环境要比土体环境更容易散热,且散热速度与水流速度呈正相关性。根据土体与水体在散热性能方面的差异,本技术提供一种新型的传感器,测量桥梁钢管桩周边的冲淤深度,进而实现冲淤状态的自动实时监测。
技术实现思路
本技术的目的在于提供一种测量桥梁钢管桩冲淤的传热桥式传感器,基于水体和土体中热量散失程度差异的原理,通过测量传感器所处环境的热量散失程度来区分水体和土体,用以监测水下冲淤变化,具有高精确度、高耐久性、制作简单、成本低等优势。实现本技术目的的技术解决方案为:传感器包括电源线、信号线、壳体、温度探头、发热块、隔温材料、尖锥、密封板。壳体由侧壁为瓦片形、两端为半圆形的不锈钢片焊接而成。尖锥为半个实心锥体,尖锥顶面与壳体底面通过螺栓连接。壳体内侧侧壁中心为发热块,四边中点各有一个温度探头。发热块的电源线以及温度探头的信号线从壳体顶端引出。壳体内其余空间用隔温材料填充,并将密封板嵌入壳体开口端焊接密封。上述壳体和尖锥的侧壁的曲率与钢管桩外壁的曲率相同。本技术的传感器工作原理和方法如下:热源与感温点分别位于传热桥两端,热源散发出的热量经过传热桥传至感 ...
【技术保护点】
一种测量桥梁钢管桩冲淤的传热桥式传感器,其特征在于:传感器(12)包括电源线(121)、信号线(122)、壳体(123)、温度探头(124)、发热块(125)、隔温材料(126)、尖锥(127)、密封板(128);壳体(123)由侧壁为瓦片形、两端为半圆形的不锈钢片焊接而成;尖锥(127)为半个实心锥体,尖锥(127)顶面与壳体(123)底面通过螺栓连接;壳体(123)内侧侧壁中心为发热块(125),四边中点各有一个温度探头(124);发热块(125)的电源线(121)以及温度探头(124)的信号线(122)从壳体(123)顶端引出;壳体(123)内其余空间用隔温材料(126)填充,并将密封板(128)嵌入壳体(123)开口端焊接密封。
【技术特征摘要】
1.一种测量桥梁钢管桩冲淤的传热桥式传感器,其特征在于:传感器(12)包括电源线(121)、信号线(122)、壳体(123)、温度探头(124)、发热块(125)、隔温材料(126)、尖锥(127)、密封板(128);壳体(123)由侧壁为瓦片形、两端为半圆形的不锈钢片焊接而成;尖锥(127)为半个实心锥体,尖锥(127)顶面与壳体(123)底面通过螺栓连接;壳体(123)内侧侧壁中心为发热块(1...
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