Hydraulic gate structure capable of adjusting lower suction force

Abstract

The invention discloses a hydraulic gate structure capable of adjusting lower suction force, and applied in the field of hydraulic engineering. The hydraulic gate structure capable of adjusting the lower suction force comprises cover plate inhaul cables, water permeating holes, cover plates, guide rails, supporting rings, opening holes, bottom edges, longitudinal beams and transverse beams; a bulkhead gate consists of a series of the transverse beams and the longitudinal beams, and the opening holes are formed in the transverse beam at the very bottom; the supporting rings are installed on theopening holes and are used for supporting the cover plates and sealing the opening holes, and the cover plates capable of being lifted and lowered are arranged above the opening holes; the cover plates are suspended by the cover plate inhaul cables, and the smooth guide rails are arranged at the four corners of beam grillages of the transverse beams; and the cover plates are constrained by the guide rails when falling down and cover the opening holes accurately. According to the hydraulic gate structure capable of adjusting the lower suction force, the opening holes are formed in the bottom transverse beam of the gate, the stress area of the water weight is reduced, and the holding force of the gate is enabled not to be too large at the initial stage of falling; and when the small openingof the gate cannot be closed, the cover plates on the upper side of the bottom transverse beam fall down to cover the opening holes, the stress area of the water weight is enlarged, namely, the lowersuction force is enlarged, and the gate closing of the gate is facilitated.

Description

technical field [0001] The invention discloses a hydraulic gate structure with adjustable lower suction force, which is applied in the field of hydraulic engineering. Background technique [0002] In water conservancy projects, with the construction of high reservoir dams, the working head of the slab gate gradually increases. For example, the working head of Jinping 1 Hydropower Station is 130m, the working head of Xiaowan Hydropower Station is 160m, and the working head of Laxiwa Hydropower Station is 165m. After the flat gate is soaked in water for a period of time, the slider, side wheel and water seal will be rusted and worn to varying degrees, resulting in a significantly larger friction coefficient than the design. When the slab gate is closed in moving water, the holding force of the gate is often too large at the initial stage of falling, which easily exceeds the capacity of the hoist and causes damage to the hoist; while when the gate opening is small, the thrust o...

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