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一、前言船闸输水廊道中的输水阀门是控制船闸充泄水的咽喉,运转频繁。由于输水阀门处流速很高、边界复杂、压力变化激烈,其水力情况十分复杂,稍有不慎即将影响阀门的正常运转,甚至危害结构的安全。因此,阀门的安全运转和其水力情况密切相关,在设计时除了要考虑到结构简易、使用检修方便和造价等因素外,还必须充分了解其运转时的水力特性,以选择适宜的阀门型式。
First, the foreword Shiplock waterway corridor in the water valve is to control the sluice filling the throat, frequent operation. Due to the high flow velocity at the valve, complicated boundaries and intense pressure changes, the hydraulic conditions are very complicated. The slightest mistake will affect the normal operation of the valve and even endanger the safety of the structure. Therefore, the safe operation of the valve and its hydraulic conditions are closely related to the design in addition to taking into account the simple structure, ease of use and maintenance cost and other factors, but also must fully understand the hydraulic characteristics of its operation to select the appropriate valve type.