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为了扩大适用范围,必须确定在不同水头,不同流量,采用不同的叶片安放角时仍可近似适用的工况点,列于表1。 (二)结构特点 1.为使结构安全可靠,避免振动,缩小加工尺寸,减轻重量,改善性能,在结构设计时做了以下工作。 (1)对GZ002号流道作了修改(图2)。①转轮中心到导叶转轴之间的距离,由原来的0.8D_1缩短到0.7D_1;②灯泡体dg由原
In order to expand the scope of application, it is necessary to determine the operating points which can be approximated by different head, different flow rates and different blade angles, which are listed in Table 1. (B) structural features 1. In order to make the structure safe and reliable, to avoid vibration, reduce processing size, reduce weight and improve performance, in the structural design of the following work done. (1) Modification of runway GZ002 (Figure 2). ① center of the rotor to the guide vane shaft distance, shortened from the original 0.8D_1 to 0.7D_1; ② bulb body dg from the original