Adjustable vortex-preventing beam and construction method thereof

Abstract

The invention discloses an adjustable vortex-preventing beam. The adjustable vortex-preventing beam comprises precast reinforced concrete beams, lifting rings and precast concrete cushion blocks; the precast reinforced concrete beams adopt T-shaped structures; one end of each lifting ring is pre-embedded in the corresponding precast reinforced concrete beam, and the other end of the lifting ring extends out of the upper end of the precast reinforced concrete beam; bolt holes include first bolt holes, second bolt holes, third bolt holes and fourth bolt holes; the precast reinforced concrete beams include transverse precast reinforced concrete beams and longitudinal precast reinforced concrete beams; the first bolt holes are formed in the left and right end surfaces of the transverse precast reinforced concrete beams from top to bottom; the precast concrete cushion blocks are arranged between the precast reinforced concrete beams and entablatures and are arranged on four corners in the positions where the precast reinforced concrete beams are overlapped with the entablatures; the precast reinforced concrete beams are fixed on the entablatures through angle steel; and the second bolt holes correspond to the first bolt holes. The adjustable vortex-preventing beam has the advantage that vortex production can be prevented. The invention further discloses a construction method of the adjustable vortex-preventing beam.

Description

technical field [0001] The invention relates to the technical field of a pumped storage power station, and more specifically relates to an adjustable anti-vortex beam. The invention also relates to a construction method of the adjustable vortex-proof beam. Background technique [0002] The water flow of the pumped storage power station is a two-way flow. The flow velocity of the inlet (outlet) water outlet is as uniform as possible to reduce the loss of water head. The inflow vortex or the adverse oscillation caused by the circulation surface of the reservoir has an adverse effect on the reservoir bank and the inlet (outlet) structure. The vortex backflow occurs when the inlet (outlet) outlet flows out of the inflow (outlet). The economic benefits of the pumped storage power station will seriously cause the vibration or even damage of the trash rack; the conventional pumped storage power station is equipped with an anti-vortex beam on the top of the front (end) end of the i...

AI Technical Summary

Problems solved by technology

[0002] The water flow of the pumped storage power station is a two-way flow. The flow velocity of the inlet (outlet) water outlet is as uniform as possible to reduce the loss of water head. The inflow vortex or the adverse oscillation caused by the circulation surface of the reservoir has an adverse effect on the reservoir bank and the inlet (outlet) structure. The vortex backflow occurs when the inlet (outlet) outlet flows out of the inflow (outlet). The economic benefits of the pumped storage power station will seriously cause the vibration or even damage of the trash rack; the conventional pumped storage power station is equipped with an anti-vortex beam on the top of the front (end) end of the inlet (outlet), and the anti-vortex beam is connected with the inlet The overall pouring of the nozzle structure, the setting of the vortex-proof beam is mainly based on the model test research, but there are differences between the model test and the real inlet (outlet) water flow movement, and the water level of the upper (lower) reservoir of the pumped storage power station is subject to water level fluctuations Yes, if the height of the anti-vortex beam is set unreasonably and cannot prevent the generation of vortex, it will have an adverse effect on the economic benefits of the pumped storage power station and the structural stability of the trash rack. Height is difficult to adjust

[0003] The existing application number is 97230081.3, and the patent title is "Stair Vertical Anti-Vortex Device", which discloses a stepped vertical anti-vortex device, which has the disadvantage that the size of the anti-vortex device cannot be adjusted according to power stations with different flows;

[0004] The existing application number is 98236719.8, and the patent name is "Concrete Prefabricated Vortex-proof Board", which discloses a concrete prefabricated vortex-proof board, which has the disadvantage of not being able to adjust the size of the square frame according to power stations with different flows;

[0005] The existing application number is 200420119179.4, and the patent name is "Well Type Water Inlet and Outlet Structure of Pumped Storage Power Station", which discloses a well type water inlet and outlet structure of pumped storage power station, which has the disadvantage of complex structure

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