| 1. | Computation of the ballast tank hydraulic loss based on resistance network 用电阻网络方法计算船舶压载舱的压力损失 |
| 2. | According to the results of analysis , the shape of the spiral case and stay vanes were improved to reduce the hydraulic losses 根据解析结果,对涡壳和固定导叶进行了改进以减少水力损失。 |
| 3. | The method was applied to measure the hydraulic losses of inlet and outlet conduit of bulb tubular pump system of the pumping station respectively 采用本文的方法对某泵站前置灯泡和后置灯泡贯流泵的进、出水流道分别进行了模型试验,测试了流道水力损失。 |
| 4. | The test results signify that the more accuracy result could be obtained to apply the method and the hydraulic losses of the conduits of bulb tubular pump is relative closely to the bulb location 试验结果表明:采用新方法进行贯流泵进出水流道水力损失的测试,可以较为方便地得到准确的结果;贯流泵装置进、出水流道的水力损失与灯泡布置的位置密切有关。 |
| 5. | Results indicate that flow deviation in discharge passage is formed by co - action of pump outflow circulation and secondary flows in outflow curved pipe , hydraulic loss of discharge passage increases and pump assembly efficiency decreases because of flow deviation 结果表明:水泵出流环量和出水弯管二次流共同作用形成了出水流道偏流,偏流使出水流道水力损失增大,泵装置效率下降。 |
| 6. | It is pointed out that passage hydraulic loss is related to the flow circulation , the influence of flow deviation on passage hydraulic loss and pump assembly efficiency is analyzed , the forming mechanism of flow deviation is investigated , and the method of eliminating flow deviation is put forward 指出流道水力损失与水流环量有关,分析偏流对流道水力损失和泵装置效率的影响,研究偏流形成机理,提出消除偏流的方法。 |
| 7. | With the in - built drip irrigation belt and thin wall chip irrigation belt taken as examples , the flow rate distribution and hydraulic losses of drippers along capillary tubes at different inlet pressures were measured under the conditions of horizontal slope and slope gradients of 0 . 5 % and 1 % , then the uniformity of capillary tubes was calculated at different slope gradients and pressures in consideration of the manufacture deviation of drippers 摘要以内镶式滴灌带和薄壁滴灌带为研究对象,测定了平坡、 0 . 5 %坡度和1 %坡度时,不同入口压力下滴头沿毛管的流量分布和水力损失,并结合滴头的制造偏差,计算得出不同坡度和压力条件下滴灌毛管的均匀度。 |
| 8. | The fzlq fully automatic sewage filtering device adopts the following method to increase its filtering reliability : 1 ) increasing filtering area to reduce hydraulic losses ; 2 ) reducing the ratio of cleared filtering screen area to working filtering screen area to enhance the reliability of operating filtering device ; and 3 ) using rational flow channel and flow direction to clear the filtering screen 国产fzlq型全自动清污滤水器,用增大过滤面积来降低过流水力损失;用减小被清洗的滤网面积与工作滤网面积的比例来提高在线运行的滤水器的稳定性;采用合理的流道及水流方向清洗滤网,提高过滤的可靠性。 |
| 9. | In this paper according to the design scheme of yao heba power station in nan yahe river , the mathematical model with longer and complicated conduit system , elastic water hammer and pid regulating low of voter turbine adjusting system in the case of the small fluctuation has being built , which include conduit system , surge tank , draft tube , water turbine , generator and governor . the hydraulic losses are taken into account , and nonlinearization in water turbine and the governor is also taken into account 本文根据南桠河姚河坝水电站的设计方案,对水轮机调节系统,按长引水管道复杂引水系统、弹性水击、调速器为pid调节规律,在小波动情况下,对包括引水道、调压井、尾水管、水轮机、发电机、调速器在内的水轮机调节系统建立数学模型,并计及引水管道水力摩阻损失,对水轮机、调速器考虑了其中的非线性,利用功能强大的matlab软件编制了源程序进行计算机仿真计算。 |