Blockage welding structure for grouting hole of pressure steel pipe of energy storage power station

Abstract

The invention provides a blockage welding structure for a grouting hole of a pressure steel pipe of an energy storage power station, and relates to the technical field. According to the technical scheme, the blockage welding structure for the grouting hole of the pressure steel pipe of the energy storage power station comprises an operating table; a guiding seat is arranged on the operating table,wherein a sliding groove is formed in the top face of the guiding seat; and a bracket and a supporting plate are arranged at the two ends of the guiding seats correspondingly, and a guiding mechanism, a moving mechanism located on a bottom plate above the guiding mechanism, and a blocking mechanism arranged on the moving mechanism are connected between the bracket and the supporting plate in a crossing mode. The blockage welding structure has the beneficial effects that the blocking mechanism in the blockage welding structure adopts an electric pushing rod, thus a clamping hoop can be locatedon the pressure steel pipe of the energy storage power station, it can also be ensured that the clamping hoop moves on the pressure steel pipe of the power station, and the structure for 360-degree blockage welding of the grouting hole of the pressure steel pipe of the energy storage power station is achieved.

Description

technical field [0001] The invention relates to the technical field, in particular to a sealing and welding structure for pressure steel pipe grouting holes of an energy storage power station. Background technique [0002] In the penstock installation project of the pumped storage power station, it is necessary to seal and weld the grouting hole of the penstock, but since the joint between the grouting hole and the grouting plug in the grouting hole sealing and welding structure is circular, it is a closed weld. Welding shrinkage will be restrained to a certain extent, so that the weld seam is prone to cracks; and during welding, the thread of the grout plug is prone to water seepage, causing cracks in the weld seam. Moreover, the sealing performance of the current plug welding structure is not ideal. In this way, during the construction of grouting hole sealing welding, after the completion of the project, after the filling and drainage test, or after the unit is shut down...

AI Technical Summary

Problems solved by technology

[0002] In the penstock installation project of the pumped storage power station, it is necessary to seal and weld the grouting hole of the penstock, but since the joint between the grouting hole and the grouting plug in the grouting hole sealing and welding structure is circular, it is a closed weld. Welding shrinkage will be restrained to a certain extent, so that the weld seam is prone to cracks; and during welding, the thread of the grouting plug is prone to water seepage, causing cracks in the weld seam

Moreover, the sealing performance of the current plug welding structure is not ideal

In this way, during the construction of grouting hole sealing welding, after the completion of the project, after the filling and drainage test, or after the unit is shut down for inspection, water seepage and flooding of the weld seam often occur, which not only requires a huge cost of repair, but also easily leads to downtime and other serious accidents

Therefore, the existing penstock grouting hole plugging welding structure has the problems that cracks are easy to occur in the weld seam, the sealing performance is not ideal, the weld seam is easy to seep water, it needs to be repaired at a huge cost and it is easy to cause shutdown accidents

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