Giant pressure pipeline of new hydropower station

Abstract

The invention discloses a novel giant pressure pipeline of a hydropower station, which comprises an active powder concrete pipe, an externally wound prestressed steel wire wound outside the active powder concrete pipe; one end of the active powder concrete pipe is provided with a mortise, and the other end is provided with a mortise; Copper waterstops are installed at the mortise and tenon structure of the connection; outsourcing concrete is poured outside the active powder concrete pipe, and a reinforcement mesh wrapped around the active powder concrete pipe and bound by circumferential steel bars and longitudinal steel bars is arranged in the outsourcing concrete. The present invention uses active powder concrete instead of steel as the material of the pipe body, which alleviates the contradiction that the domestic production of high-strength low-alloy quenched and tempered steel cannot meet the needs of giant pressure steel pipes; the use of prestressed active powder concrete pipes instead of steel pipes reduces the production of pressure pipes The technical requirements in the process reduce energy consumption and cost at the same time; increase the critical instability stress to solve the problem of buckling and buckling failure of penstocks under external pressure; ensure the durability of outsourcing concrete and eradicate the problem of steel corrosion.

Description

technical field [0001] The invention relates to water diversion system equipment of a hydropower station, in particular to a novel giant pressure pipeline of a hydropower station. Background technique [0002] With the construction of large-scale conventional and pumped storage power stations, steel-lined reinforced concrete pressure pipes are more and more used in water diversion systems of hydropower stations because of their good bearing capacity and relatively economical advantages. The steel used in the pipeline is high-strength low-alloy quenched and tempered steel, which requires high production technology, high energy consumption, and high price, and domestic production cannot fully meet the needs of giant pressure steel pipes; at the same time, the welding, manufacturing and installation technology of thick-walled steel pipes It is difficult, time-consuming and labor-intensive to produce, and there is a complex welding thermal residual stress field at the weld, whic...

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Problems solved by technology

These technical problems, along with the development of hydropower stations, have not been resolved qualitatively

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