QGH25-70-7.5型恒压离心泵机组设计
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摘要
针对达州市丘陵山区果树灌溉用泵机组的使用现状,分析选用IS型单级单吸离心泵机组、ZB型自吸离心泵机组、QS型充水式潜水电泵等普通离心泵机组的不足,在借鉴高速部分流泵的先进技术的基础上并结合已有的经验设计研制出轻型高效恒压的QGH25-70-7.5型手压排气汽油机直联恒压离心泵机组,尤其是对叶轮与泵体等核心零部件经行了结构创新设计,叶轮为全开式结构,泵体喉部关键水力尺寸d采用钻孔加工,泵体扩散段用锥度铰刀或电脉冲加工出来,确保了泵机组的水力效率高。QGH25-70-7.5型泵机组零部件试制完毕并组装完成后,通过测试,其性能参数为:流量Q=25.7 m~3/h,扬程H=71.2 m,转速n=3 600 r/min,效率69.3%,吸程Hs=7.6 m,泵机组Q-H流量扬程曲线平直,机组具有变流稳压的特殊性能,实现了机组恒压的特殊要求,适合丘陵山区果树灌溉使用。
In view of the current situation of using pump units for irrigation of fruit trees in hills and mountains of dazhou city, this paper analyzes the insufficiency of using IS single-stage single-suction centrifugal pump units, ZB self-suction centrifugal pump units, QS submersible electric pump units. Based on the advanced technology of high-speed partial flow pump and combined with the existing experience, a light and efficient constant pressure QGH25-70-7.5 type direct joint constant pressure centrifugal pump unit for hand pressure exhaust gasoline engine was developed. In particular, the core components such as impeller and pump body have been designed through structural innovation. The impeller is a fully open structure. The key hydraulic size d of the pump body is drilled and processed. The diffusion section of the pump body is processed with a taper reamer or electric pulse. The hydraulic efficiency of pump unit is ensured. After the QGH25-70-7.5 pump unit parts are trial-produced and assembled, the performance parameters are: flow Q=25.7 m~3/h, Yangcheng H=71.2 m, speed N=36 000 r/min, efficiency 69.3%, The suction range Hs=7.6 m, the pump unit Q-H flow lift curve is straight, the unit has the special performance of variable flow and steady pressure, and realizes the special requirements of the unit constant pressure, suitable for irrigation of fruit trees in hilly areas.
In view of the current situation of using pump units for irrigation of fruit trees in hills and mountains of dazhou city, this paper analyzes the insufficiency of using IS single-stage single-suction centrifugal pump units, ZB self-suction centrifugal pump units, QS submersible electric pump units. Based on the advanced technology of high-speed partial flow pump and combined with the existing experience, a light and efficient constant pressure QGH25-70-7.5 type direct joint constant pressure centrifugal pump unit for hand pressure exhaust gasoline engine was developed. In particular, the core components such as impeller and pump body have been designed through structural innovation. The impeller is a fully open structure. The key hydraulic size d of the pump body is drilled and processed. The diffusion section of the pump body is processed with a taper reamer or electric pulse. The hydraulic efficiency of pump unit is ensured. After the QGH25-70-7.5 pump unit parts are trial-produced and assembled, the performance parameters are: flow Q=25.7 m~3/h, Yangcheng H=71.2 m, speed N=36 000 r/min, efficiency 69.3%, The suction range Hs=7.6 m, the pump unit Q-H flow lift curve is straight, the unit has the special performance of variable flow and steady pressure, and realizes the special requirements of the unit constant pressure, suitable for irrigation of fruit trees in hilly areas.
引文
[1] 张元华,方长河,曾宪荣.一种自吸泵[P].中国专利:ZL2011200443452.X,2011-12-07.
[2] 合肥通用机械研究所.高速部分流泵[M].合肥:化工与通用机械参考资料,1975.
[3] 李文广译.(美国)工业用离心泵设计与应用[R].兰州:甘肃工业大学水力机械教研室,1998.
[4] 沈阳水泵研究所.叶片泵设计手册[M].北京:机械工业出版社,1983.
[5] 关醒凡.现代泵技术手册[M].北京:宇航出版社,1995.
[6] 张元华,刘军,曾宪荣.一种恒压喷灌系统设备[P].中国专利:ZL201420679830.7,2015-06-10.
[7] 张元华,刘军,曾宪荣.一种水肥一体化喷灌系统设备[P].中国专利:ZL201620102299.6,2016-08-31.
[8] 肖兰.一种新型恒压自吸喷灌系统设备[J].科技资讯,2015,395:109-110.
[9] 张元华.高效多工况水肥一体化新技术[J].农机科技推广,2018,190:45-46.
[10] 刘军,张元华.水肥一体化在达州丘陵地区的应用[J].农机科技推广,2018,183:38-40.
[11] 张元华.一种高效多工况水肥一体化灌溉设备[C].2018年中国设施园艺学术年会论文集,2018(10):44-46.
[13] 黄章慧,刘军,饶小军,等.新型高效恒压喷灌自吸泵[C].第二届高效节水灌溉技术与水肥一体化技术应用专刊,2013(4):55-47.
[14] 范宗霖,王革田.切线泵的试验研究[J].水泵技术,2002(2):35-38.
[15] 范宗霖.切线消防泵的开发与应用[J].水泵技术,2003(6):56-59.
[2] 合肥通用机械研究所.高速部分流泵[M].合肥:化工与通用机械参考资料,1975.
[3] 李文广译.(美国)工业用离心泵设计与应用[R].兰州:甘肃工业大学水力机械教研室,1998.
[4] 沈阳水泵研究所.叶片泵设计手册[M].北京:机械工业出版社,1983.
[5] 关醒凡.现代泵技术手册[M].北京:宇航出版社,1995.
[6] 张元华,刘军,曾宪荣.一种恒压喷灌系统设备[P].中国专利:ZL201420679830.7,2015-06-10.
[7] 张元华,刘军,曾宪荣.一种水肥一体化喷灌系统设备[P].中国专利:ZL201620102299.6,2016-08-31.
[8] 肖兰.一种新型恒压自吸喷灌系统设备[J].科技资讯,2015,395:109-110.
[9] 张元华.高效多工况水肥一体化新技术[J].农机科技推广,2018,190:45-46.
[10] 刘军,张元华.水肥一体化在达州丘陵地区的应用[J].农机科技推广,2018,183:38-40.
[11] 张元华.一种高效多工况水肥一体化灌溉设备[C].2018年中国设施园艺学术年会论文集,2018(10):44-46.
[13] 黄章慧,刘军,饶小军,等.新型高效恒压喷灌自吸泵[C].第二届高效节水灌溉技术与水肥一体化技术应用专刊,2013(4):55-47.
[14] 范宗霖,王革田.切线泵的试验研究[J].水泵技术,2002(2):35-38.
[15] 范宗霖.切线消防泵的开发与应用[J].水泵技术,2003(6):56-59.