High attitude area dynamic water start-stop plane gate groove

Abstract

The invention discloses a high attitude area dynamic water start-stop plane gate groove. The high attitude area dynamic water start-stop plane gate groove comprises a gate groove body, the ratio of the width W of the gate groove to the depth D of the gate groove is W / D=1.7-1.9, the ratio of the downstream alternate distance delta to the width W of the gate groove is delta / W=0.08-0.12, the slope ratio of downstream alternate distance delta to the length X of a slope is delta / X=1:13-15, and the distance Y between the downstream surface of the gate groove and a downstream breast wall is not smaller than 1.5 times the width W of the gate groove. Each circular bead formed in the corresponding slope alternate distance is R100-R80. Each internal circular bead of the gate groove is R100. By means of the high attitude area dynamic water start-stop plane gate groove, gate groove cavitation erosion and gate vibration brought by the gate groove cavitation erosion are reduced, and therefore the safety operation of the plane gate is guaranteed.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower station infrastructure construction engineering, in particular to a planar gate trough that needs to be opened and closed by dynamic water in high-altitude areas (2500m above sea level and above). Background technique [0002] Water conservancy and hydropower projects are often located in high-altitude areas. For the plane gates that need to be opened and closed by moving water in this area, the decrease in atmospheric pressure and air density caused by the increase in altitude has not been considered in the design of the gate slot type ( Generally, every time the altitude increases by 1000m, the relative atmospheric pressure will decrease by about 12%, and the air density will decrease by about 10%), which will cause cavitation damage to the door slot and vibration of the door leaf, which will easily lead to operational accidents. Considering the influence of high...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at high-altitude areas (2500m above sea level and above) where the relative atmospheric pressure and air density are lower than those in middle- and low-altitude areas, and the planar gates opened and closed by dynamic water are likely to cause cavitation damage to the door slot and vibration of the door leaf, which in turn leads to Improvement of the design for the problem of operational accidents

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