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A high-head ship lock water delivery valve bottom edge aeration system

A high water head and valve technology, applied in ship locks, ship lifting devices, water conservancy projects, etc., can solve problems such as cavitation damage in the valve section of navigable ship locks, improve cavitation problems in water flow, avoid cavitation damage, and reduce construction difficulty Effect

Active Publication Date: 2015-09-09
CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the deficiencies in the prior art and effectively solve the cavitation damage problem of the valve section of the navigable ship lock, the present invention proposes an aeration system for the bottom edge of the water delivery valve of the high head ship lock

Method used

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  • A high-head ship lock water delivery valve bottom edge aeration system
  • A high-head ship lock water delivery valve bottom edge aeration system
  • A high-head ship lock water delivery valve bottom edge aeration system

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Embodiment example

[0028] The aeration system of the bottom edge of the high-head ship lock water delivery valve of the present invention has been studied on a valve section model of a high-head ship lock water delivery system. The research shows that by adjusting the shape of the bottom edge of the valve, the bottom edge can be made especially in the process of opening the valve. It means that when the valve operates to the most unfavorable opening range, a stable negative pressure area can appear, which can meet the needs of natural ventilation at the bottom edge. In addition, the penetration effectiveness of the swivel joint of the vent pipe was tested on a prototype of a high-head ship lock. The test showed that the use of the swivel joint available in the market can ensure the smooth flow of the vent pipe moving with the valve.

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Abstract

The invention provides a bottom edge aerification system of a water delivery valve of a high lift lock. The bottom edge aerification system comprises a water delivery valve, a water gallery, a first vent pipe, a rotary joint and a second vent pipe. The water delivery valve adopts a slot-free anti-arc valve, and comprises a valve support hinge, a valve panel, and a valve support arm connecting the valve support hinge and the valve panel. The first vent pipe is buried in concrete when a valve chamber is poured, and an inlet end of the first vent pipe is positioned at the top of the valve chamber and connected with atmosphere. The second vent pipe communicated with the outside is led out of the bottom edge of the water delivery valve, and enters the valve support hinge along the valve support arm, and the rotary joint connecting the first vent pipe to the second vent pipe is arranged at the valve support hinge. The system can improve a water flow cavitation problem of a valve section of the lock, avoids cavitation erosion damage, can improve the operational safety of the lock, reduce the burial depth of the valve section and simplify a gallery body of the valve section, avoids a new cavitation source formed due to the excessively complicated body of the valve section, and can reduce the construction difficulty and construction cost of the gallery of the valve section.

Description

technical field [0001] The invention relates to the technical field of corrosion reduction for valve sections of high-head ship locks in water conservancy projects, in particular to an aeration system for the bottom edge of water delivery valves of high-head ship locks. Background technique [0002] Ship locks are navigable structures installed on navigable rivers to help ships overcome the water level difference caused by damming. With the development of shipping engineering, the scale of ship locks is constantly increasing, and the size and water head of valves are also increasing and improving accordingly. There are dozens of high-head ship locks built or planned to be built in the world, mainly concentrated in the former Soviet Union, the United States, Brazil, Portugal and China, especially in the western hydraulic development of my country in recent years. Multiple high dams and large reservoirs are under construction and planned to be built, so multiple high-head ship...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02C1/06E02B8/04
CPCY02A10/30
Inventor 江耀祖吴英卓黄国兵周赤王智娟伍友富姜伯乐陈辉刘志雄何勇陈杨岳汉生
Owner CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
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