Method and device for quickening water filling and pressure relief of plane gate

Abstract

The invention discloses a method and a device for quickening water filling and pressure relief of a plane gate. According to the method, a balance suspension girder unit is added between a hoist suspension head and gate water filling valves, the upper portion of the balance suspension girder unit is made to be fixedly connected with the hoist suspension head through a lug, and the lower portion of the balance suspension girder unit is made to be fixedly connected with lugs on the gate water filling valves through suspension head units, accordingly the hoist suspension head can hoist the balance suspension girder unit to achieve simultaneous opening of the gate water filling valves. By means of the method and the device for quickening water filling and pressure relief of the plane gate, the water filling speed can be over 3 times that in the prior art, the water filling speed of the gate is improved greatly, overhauling and maintenance time of tunnels is shortened, and benefits of power generation of a power station are improved while the safe operation of the power station is effectively guaranteed.

Description

technical field [0001] The invention relates to a method and a device for accelerating the water filling pressure of a planar gate, belonging to the technical field of gates of water conservancy and hydropower projects. Background technique [0002] At present, in water conservancy and hydropower projects, water inlet or discharge hole accident gates generally use water filling valves for filling and hydraulic pressure. According to the current gate lifting points, there are two types: single lifting point and double lifting point. A gate is usually equipped with at most two If the diameter of the water filling valve is too large, the strength of the main girder web of the gate will be weakened, and the height of the main girder must be increased. The phenomenon of cavitation erosion is especially prominent for high head discharge gates. Therefore, the diameter of domestic water filling valves generally does not exceed 600mm. For diversion or discharge tunnels with a diamete...

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Problems solved by technology

[0002] At present, in water conservancy and hydropower projects, water inlet or discharge hole accident gates generally use water filling valves for filling and hydraulic pressure. According to the current gate lifting points, there are two types: single lifting point and double lifting point. A gate is usually equipped with at most two If the diameter of the water filling valve is too large, the strength of the main girder web of the gate will be weakened, and the height of the main girder must be increased. The phenomenon of cavitation erosion is especially prominent for high head discharge gates. Therefore, the diameter of domestic water filling valves generally does not exceed 600mm. For diversion or discharge tunnels with a diameter of less than 10m and a length of less than 1 kilometer, the water filling The time is usually within one day, which has little impact on the safety and power generation efficiency of the power station. However, for tunnels with a length of several kilometers and a diameter of more than 10m, the water filling time usually takes more than one week, and some even take half a month. This greatly increases the time for inspection and maintenance. For the discharge tunnels participating in flood discharge, when the upstream water is large, the water filling time is too long, which will cause the working gates to fail to participate in flood discharge and affect the safety of the power station. For the diversion tunnel, the water filling time is too long It will affect the power generation efficiency of the power station, so the existing technology is still not perfect

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