Shandong Huaning Electric Heating Technology Co., Ltd.
Electric heating for filling pipelines in cantilever-continuous beams in railway construction
With the rapid development of railway construction in my country, the construction of adjacent cantilever continuous beams is increasing, and construction must be carried out continuously, and concrete construction in winter is more common. The tension and pouring of cantilever continuous beams are the most important parts of the cantilever continuous beam, and the temperature control of pipelines is especially important in winter construction.
Oct 25,2022
With the rapid development of railway construction in my country, the construction of adjacent cantilever continuous beams is increasing, and construction must be carried out continuously, and concrete construction in winter is more common. The tension and pouring of cantilever continuous beams are the most important parts of the cantilever continuous beam, and the temperature control of pipelines is especially important in winter construction.
The traditional method of controlling the pouring temperature of a construction pipeline in winter is to build a greenhouse on the outside of the beam body within the range where the pipeline passes, and to use heating equipment to heat the interior of the greenhouse to achieve pouring conditions. This method is expensive and the construction period is long. Great influence on the existing line safety. In response to the above situation, we supply electric heating cables to railway construction units to control the temperature of stretched pipelines.
Electric heating is an effective pipe insulation and freezing protection solution that is widely used. Its working principle is to dissipate a certain amount of heat through the heat transfer medium and make up for the losses of the heated pipe through direct or indirect heat exchange to meet normal operating requirements for temperature rise, heat preservation or antifreeze.
In accordance with the principle of operation of electric heating, specifications and models of electric heating are developed on the basis of theoretical calculations. Before the concrete is poured, the heating cable is safe, and the heating cable is connected during winter construction and maintenance of the cantilevered solid fill of the girder pipeline. Carry out heating and heat preservation so that the temperature of the pipeline during construction meets the requirements of the specification.
Since there is no need for explosion-proof and anti-corrosion, it is enough to select the main type of electric heating cable for electric heating fill in the construction of cantilever continuous beams in the winter. And the temperature requirements are not very high, so it is recommended to use self-limiting temperature heating cables. Using self-limiting temperature heating cables saves time and effort at an early stage and does not require complex design and precise dosage determination. Purchased self-limiting temperature heating cables After the goods arrive, they will be cut and buried according to the specific conditions on site. In addition, the self-regulating temperature characteristic of the self-regulating electric heating cable makes it unnecessary to equip with a professional temperature controller, which significantly reduces the complexity of the structure during installation and reduces the cost.
The principle of electric heating is used to regulate the filling temperature of pipelines during winter construction, and the heating mains are pre-buried in pipelines, which reduces the volume of repair work during winter construction and reduces construction costs. The construction of electric heating is simple, and the measures for the winter maintenance of the pipeline are completed before the concrete is poured, which ensures high performance and short construction time.
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