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Nested type top overflowing gate

A nested gate technology, applied in the field of gates, can solve problems such as difficulty in opening gates, difficult control, gate vibration, etc., and achieve the effect of good utilization of flood resources, flexible and convenient opening and closing, and increased water diversion capacity

Active Publication Date: 2013-09-04
YELLOW RIVER CONSERVANCY TECHN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of gate can store and introduce flood resources to the utilization area for farmland irrigation, wetland conservation, and groundwater replenishment, but because the gate is opened at the bottom, and the flood water level is higher than the normal water level, the scouring force is relatively strong. The outflow and diversion of the orifice is small and difficult to control; and when the gate is opened from the bottom, because the sediment concentration of the river in the flood season is higher than usual, the water with a higher sediment concentration will be introduced into the utilization area, resulting in sediment deposition and silt irrigation; because the control of the flow rate of the gate is realized through the change of the opening height of the gate, the force of opening the gate becomes larger due to the water pressure on the gate panel, and it is difficult to open the gate, and the water flow from the lower part of the gate Overcurrent can easily cause the gate to vibrate and wash the gate groove; and since the gate is opened from the bottom position, the water flow will form an underflow energy dissipation after entering the gate, and the kinetic energy carried by the water flow and Potential energy is consumed to reduce the erosion of the channel, but there are disadvantages such as long consumption facilities and large construction volume; at the same time, most of these gates use the original planar gates of the water diversion gates, or stacked beam gates, Rather than a gate specially suitable for the utilization of flood resources in rivers with many sediments

Method used

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Experimental program
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Embodiment Construction

[0013] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0014] Figure 1 to Figure 6 Among them, the gate includes two parts: the door leaf of the movable part of the gate and the gate groove of the fixed part of the gate preset on the gate pier. The door leaf of the movable part of the gate is composed of a large gate leaf 1 rollingly connected with the large gate groove preset on the gate pier, and a small gate door located at the downstream side of the large gate leaf 1 and preset on the gate pier. The small gate leaves 2 that are connected by rolling grooves are nested and formed. The leaf 1 of the large gate is larger and thicker, and the upstream side is facing the water; the leaf 2 of the small gate is smaller and thinner, and is nested at the downstream side of the leaf 1 of the large gate. And the height of door leaf 1 of the large gate is the water depth corresponding to the normal stor...

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Abstract

A nested type top overflowing gate is mainly characterized in that a large gate leaf is in movable nested connection with a small gate leaf, and a flip bucket is arranged at the upper end of the small gate leaf in the downstream side direction, so that water flow can overflow from the top of the gate to form open weir flow, and water diversion capability can be improved while washout force is decreased; and clear upper-layer flood resources can be used to enter downstream along with main flow while bed load sediment is still blocked in an original riverway, and vibration of the gate caused by the washout force can be avoided. The nested type top overflowing gate is flexible and convenient to open and close and small in gate opening force. Meanwhile, the nested type top overflowing gate can be used normally on the basis of not changing other water gate buildings such as water gate bottom plates, gate piers and opening and closing equipment but the gate, and is less in investment, good in flood resource use effect and high in feasibility.

Description

technical field [0001] The invention relates to a gate, in particular to a nested top overflow gate, which is suitable for storing and utilizing flood resources in rivers with many sediments and sideways. Background technique [0002] Usually, for areas beside the mainstream or tributaries of rivers with heavy sediment, such as depressions, wetlands, bubble ponds or flood storage areas, where flood resources can be used, it is necessary to introduce flood resources to the utilization area through appropriate diversion gates, and carry out follow-up It can be used for farmland irrigation, wetland conservation, and groundwater supplementation. The gates commonly used at present are all single gates. According to its structure, it can be divided into plane gate, arc gate and so on. In the area where flood resources are utilized beside the river, the gates used are mainly common plane gates, such as plane steel gates. The planar steel gate is composed of three parts: the mova...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/48E02B7/54E02B8/06
Inventor 冯峰郑瑾徐鹏贾洪涛王卫东
Owner YELLOW RIVER CONSERVANCY TECHN INST
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