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1.水泵的安装高度(轴水平时,从水面到泵轴的垂直距离)和水泵铭牌上注明的“允许吸上真空高度”是否相同? 水泵的安装高度和水泵铭牌上注明的“允许吸上真空高度”是不相同的,它比水泵铬牌上注明的“允许吸上真空高度”要小。这是因为:水流经底阀、吸水管进入泵时,要与管壁发生摩擦,与弯头发生碰撞等,损失一部分能量,使安装高度降低了一部分,叫损失扬程;水进入泵时,要具有一定的速度,也损失一部分能量,又使安装高度降低了一部分,叫动水头。水泵的安装高度又叫实际(或地形)吸上高度,
1. The installation height of the pump (the vertical distance from the water surface to the pump shaft when the shaft is horizontal) is the same as the “Allowable suction height of vacuum” indicated on the pump nameplate? The installation height of the pump is the same as that indicated on the pump nameplate “Suction vacuum level allowed ” is not the same, it is smaller than the pump indicated on the chrome “allows suction vacuum height”. This is because: water flows through the end of the valve, suction pipe into the pump, the friction with the pipe wall, and elbow collision, loss of part of the energy, reducing the installation height part, called the loss of head; water into the pump, to With a certain speed, but also part of the loss of energy, but also to reduce the installation height part, called the head. Pump installation height is also called the actual (or terrain) suction height,