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Reconstruction of old-fashioned substation walls for water seepage, waterproof and fireproof sealing
At present, there is a common phenomenon in many old-fashioned substations. At the junction of the wall and the cable, the wall and the cable are in direct contact with the wall, and there is no pipe connected to the wall. Cable operation will generate a certain amount of heat, expand with heat and contract with cold, and will be in a state of low-frequency vibration for a certain period of time. Therefore, the cured cement wall cannot achieve a perfect seamless contact with the running cable, and after the cement has solidified The corners of the cable are hard, and the vibration, thermal expansion and contraction friction caused by the cable operation at the same time as the cable is running, will easily damage the surface of the cable.
Hangzhou Hengma Electric Power Technology Co., Ltd. recently renovated the waterproof and fireproof sealing of the wall-through cable in a substation in Laoshi, Jiangsu. The whole process is divided into 4 major steps: demolishing the wall, constructing the frame, shaping the wall, and cleaning and integrating, effectively moving the incoming cables to modern standardization, and leaving reserved pipelines for later maintenance.