Oblique-shaft type hydraulic self-control gate

Abstract

The invention relates to an oblique-shaft type hydraulic self-control gate comprising gate piers, a gate floor plate, a gate plate, a waterstop, an oblique shaft and arc hydraulic damping devices. The gate piers are symmetrically and vertically disposed on two sides of the gate floor plate, and the oblique shaft is disposed on the gate pier on one side and is in rigid connection with the gate pier through an anchoring structure; the lower end of the oblique shaft is fixed at the joint of the gate pier on the side and the gate floor plate, and the upper end of the oblique shaft faces the upstream direction of water flow, and the oblique shaft is mounted obliquely with a 45-degree angle formed between the oblique shaft and the bottom edge of the gate pier of the side; the gate is fixed on the oblique shaft, and the arc hydraulic damping devices are arranged between the gate and one gate pier. By the oblique-shaft type hydraulic self-control gate, opening and closing of the gate can be controlled automatically according to the upstream water level, automatic control of the gate through upstream coming water is realized, a working system of unattended operation is realized, and popularization and application in practice are facilitated.

Description

[0001] 1. Field [0002] The invention relates to an inclined axis hydraulic automatic control gate. 2. Background technology [0003] The hydraulic automatic control flap gate is a kind of hydraulic gate, which is an energy-saving and environmentally-friendly gate developed by our country's hydraulic engineering technicians after more than 40 years of hard work and has completely independent intellectual property rights. Since the birth of the first generation of hydraulic automatic flap gates in the early 1960s, it has experienced four development stages of horizontal axis double hinge type, multiple hinge type, roller link type and slider type hydraulic automatic control type. [0004] The main structure of the hydraulic automatic flap gate is reinforced concrete, which can generally be used to replace flat hoist gates, arc gates and rubber dams, and is suitable for river water retention and flood discharge. Because the hydraulic automatic flap gate has a relatively simple struct...

AI Technical Summary

Problems solved by technology

During the opening process of the horizontal axis automatic flap gate, the gate above the transverse support structure rotates around the transverse support structure along the direction of water flow, while the gate below the transverse support structure rotates around the transverse support structure against the direction of water flow. Enough force is required to turn the gate over, and the force on the gate and the gate pier is too large, which is not conducive to the stability of the gate.

[0007] Thirdly, during the discharge process of the horizontal-axis automatic flap gate, part of the water flows downstream from the water passage between the top and both sides of the gate plate and the gate pier, and part of the water flows from the bottom of the gate plate to the bottom plate and both sides of the gate plate. The water passage between the piers flows downstream, that is to say, the entire ram is in the flow of water that is being discharged. For the discharge, the ram creates a huge resistance and seriously disturbs the state of the water flow. , which seriously affects the discharge capacity of the water flow, especially during the flood period, which will seriously affect the flood discharge

[0008] Fourth, the horizontal axis type automatic flap gate, due to factors such as the supporting conditions for controlling the operation of the gate, the pressure of the gate plate, the discharge of the cavity behind the gate, the jacking of the downstream water level, and the negative pressure in the cavity behind the gate, the gate will be damaged during operation. The phenomenon of "slapping" that periodically slaps the buttresses or sills back and forth occurs, which is extremely destructive

[0009] Fifth, the horizontal-axis automatic flap gate requires a sufficiently large water level when it is opened, that is, the water pressure to be generated on the door panel above the horizontal axis must overcome the self-weight of the door panel and the water pressure generated by the door panel on the lower part of the horizontal axis. It can only be opened, which greatly restricts the opening of the gate, and the opening is inflexible; when closing, it requires a sufficiently low water level upstream of the gate panel to close, which will affect the normal water storage

[0010] Sixth, due to the characteristics of the support structure of the horizontal-axis automatic flap gate, the opening of the gate is limited. adjust

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