온라인 번역

【 중국어 】
并且远离交界面的监测点上压力整体大于靠近交界面处的监测点上压力，最高振幅出现在外侧监测点（即W3,W9,W12，W14）处。这是由于自吸初期阶段气泡大量包裹在叶轮外缘，导致叶轮出口处流动紊乱并形成漩涡,湍流状态加剧压力梯度较大引起。同时由于含气率沿径向方向逐渐减小，所以外侧压力高于内侧。
如图10(a)所示，叶轮外缘旋转一周的压力脉动时域图，最高压力出现在0°和360°附近。这是由于转动开始时叶轮靠近隔舌，由于蜗壳不能完全包裹叶轮导致叶轮外缘在经过隔舌时不能及时向蜗壳排水和气体并形成回流，压力迅速上升。从P1 ~P6上升幅度依次增加，越靠近工作面压力越大。P7位于叶片外缘与蜗壳间隙处，叶轮旋转过程中此处速度较大，压力整体较小。如图10(e)所示，出口断面压力脉动时域图。同一断面压力在轴向方向上逐渐减小
【 영어 】
The pressure at the monitoring points far from the interface is larger than that at the monitoring points near the interface, and the maximum amplitude appears at the outer monitoring points (namely W3, W9, W12, W14). This is due to the large number of bubbles wrapped around the outer edge of the impeller in the initial stage of self-priming, which results in the flow disorder at the outlet of the impeller and the formation of vortices. The turbulent state aggravates the pressure gradient. At the same time, because the void fraction decreases gradually along the radial direction, the lateral pressure is higher than the internal pressure.
As shown in FIG. 10 (a), the pressure fluctuation time domain diagram of the impeller's outer edge revolving around a circle shows that the maximum pressure occurs near 0 and 360. This is because the impeller is close to the separator tongue at the beginning of rotation. Because the volute can not completely wrap the impeller, the outer edge of the impeller can not drain and return gas to the volute in time when passing through the separator tongue, and the pressure rises rapidly. The increasing range from P1 to P6 increases in turn, and the closer to the working face, the greater the pressure. P7 is located in the clearance between the blade outer edge and volute, where the speed is higher and the pressure is smaller during the impeller rotation. As shown in Figure 10 (e), the pressure fluctuation time domain diagram of the outlet section is presented. The pressure of the same section decreases gradually in the axial direction.