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石油钻机绞车上的水力刹车,其用途是用来控制钻杆和套管在井孔内的下降速度,它是一种叶片式的水力刹车装置,由回转的转子和不回转的定子所组成,在其工作腔内填充液体。水力刹车的工作原理与液力偶合器在制动过程中的作用相类似,涡轮被抱死,变成100%的滑动。转子回转时,其径向叶片将液体从中心甩向边缘,飞到定子的叶片上。液体从定子叶片间的通道流出后,又重新落到转子的叶片上。液体就是这样在转子和定子之间建立了闭路循环。由于液体在叶片通道间的摩擦以及压头在转子叶片和定子叶片间涡流区内的冲击损失等
The hydraulic brake on the oil rig winch is used to control the descending speed of the drill pipe and the casing in the well bore. It is a blade type hydraulic brake device composed of a rotating rotor and a non-rotating stator, Fill liquid in the working chamber. The working principle of a hydraulic brake is similar to that of a fluid coupling during braking. The turbine is locked and becomes 100% slip. As the rotor turns, its radial blades throw liquid toward the edges from the center and onto the blades of the stator. After the liquid flows out of the passage between the stator blades, it drops again onto the blades of the rotor. This is how the fluid creates a closed loop between the rotor and the stator. Due to the fluid friction between the vane passages and the impact loss of the indenter in the swirl zone between the rotor blade and the stator blade, etc.