Hydropower station surge chamber non-welding sealing tool and installation method thereof

Abstract

The invention discloses a hydropower station surge chamber non-welding sealing tool and an installation method thereof, and belongs to the technical field of hydropower station metal structures. The hydropower station surge chamber non-welding sealing tool comprises a sealing blocking plate and a plurality of first tensioning lifting lugs. An annular groove is formed in the lower surface of the sealing blocking plate, and a sealing water stop device is arranged in the annular groove. The lower surface of the sealing blocking plate is fixedly connected with a plurality of second tensioning lifting lugs, and the first tensioning lifting lugs and the second tensioning lifting lugs are connected with inhaul cable devices. When the hydropower station surge chamber non-welding sealing tool is inuse, the sealing water stop device is in close contact with a pipe orifice of a middle connecting pipe in a surge chamber in the circumferential direction, and the plurality of first tensioning lifting lugs are fixedly connected with the inner wall of a middle connecting pipe adjusting joint. Under the condition of no welding, the space between a main air chamber of the surge chamber and the connecting pipe is sealed, so that the surge chamber forms a closed space, and the hydrostatic test requirement of the air cushion type surge chamber is met.

Description

technical field [0001] The invention belongs to the technical field of metal structures of hydropower stations, and relates to a non-welded sealing tool for a surge chamber of a hydropower station and an installation method thereof. Background technique [0002] In the initial stage of design of diversion power generation hydropower stations, in order to improve the internal water hammer phenomenon of penstocks, air cushion type surge chambers are often designed and built in pressurized water diversion tunnels or at the joints of pressurized water diversion pipes and pressure pipes to improve the impact of water hammer on unit vibration. Impact. The air-cushion surge chamber is bulky, and it bears the pressure of the mixed medium of gas and liquid during operation. In order to ensure the safe and stable operation of the surge chamber, it is necessary to conduct a pressure-holding test of water pressure and air pressure after the construction of the surge chamber is completed...

AI Technical Summary

Problems solved by technology

Although the bulkhead of the conventional welded structure can achieve the purpose of sealing the air chamber of the surge chamber, welding and disassembly will damage the steel plate on the inner wall of the air chamber. The risk of water leakage and air leakage will affect the safe and stable operation of the unit

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