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文章来源： 更新时间：2017-10-13
1.每一个90度弯头或90度三通损失约1米扬程。
It will lose 1 meter‘s lift when you add a 90 ° elbow or three-way pipe in the pipeline.
2.每20米管路长度损失约1米扬程。
It will lose 1 meter’s lift when the pipeline exceeds 20 meters.
3.如果出水管路直径有过渡（缩径）或分流（三通等），为了减少流体能量在管路中的损失，请使过渡段（缩径）或分流（三通等）尽量远离泵的出口，以接近喷嘴处为最好。
If there is a reducing bend or a three-way in the pipeline. In order to reduce the energy loss, make the reducing bend or the three-way as far away from the pump, close to the nozzle for the best.
4.吉林吉特建议:单级泵能满足要求时,尽量不选择多级泵.因为: ①多级泵对介质清洁度要求高,容易堵塞. ②多级泵流道变长,对介质热输入高,冷却效果受影响.③多级泵有机械密封,不耐干转和污物,属于易损件。
JL-JET suggestions: Try not to choose the multi-stages pump if the single-stage pump can meet the requirements. Because the multi-stages pump: Ⅰ.It is easily blocked by impurity. Ⅱ. The heat input is high. Ⅲ. The mechanical seal is the wearing part. It is not adapt dry running.
5.如果选用多级泵,同轴泵要优先于断轴泵. 因为电机水泵同轴结构,避免了联轴器产生故障的可能.另外,同轴泵的液上部分尺寸占用空间小. 但是液下尺寸要求较长时,断轴泵要优于同轴结构。
The coaxial pump takes precedence over the separate shaft pump. Because the coaxial structure, avoiding the coupling failure. In addition, the coaxial pump’s motor part takes smaller occupation than separate structure. But when there is long under water size requirement, the separate structure is better than the coaxial pump.
6.如选用PJT-XXA，LXB-XXA和DJB-XXA系列型号时，遇有管路较长且泵进水口高于液面设计时，请您在泵的进水端加装逆止阀,使停机后泵腔及管路中介质不倒灌回水箱,以利于再开机时介质迅速到达工作点。
If you chose JL-JET’s model such as PJT-XXA，LXB-XXA and DJB-XXA, please add a cut-off valve at the inlet part of pipeline.
7.在选泵用于粘度较高的介质时，建议您选择功率扬程时选高一个等级的型号或特殊订货。
For high viscosity media, JL-JET advice you to choose a higher level power model.
8.如遇同一台机床使用两台泵（或排屑机），电器设计务必单独控制，避免单台使用时另一台空运行。
If a machine uses two pumps, electrical control system must be designed individually. This is to avoid one pump working another idling.
9.吉林吉特产品为220V/380V 50Hz三相双电压，默认电机出厂接线为Y接380V, 如有特殊要求，请提前说明 Our default connection model is "Y"380V and 50Hz, if there are special requirements, please notify JL-JET.
10.吉林吉特产品标准配用的电机的防护等级为IP44. 如有特殊要求，请提前说明。
JL-JET’s default protection level is IP44. if there are special requirements, please notify JL-JET.
11.吉林吉特可承接特殊频率、特殊电压及三防等特殊要求订货。
JL-JET can accept orders of special frequency and voltage
12.为了保护环境,节能减排,同时节约采购成本. 吉林吉特建议您, 请尽量选择低功率电机。
For the purpose of environment protection, JL-JET suggests you to choose low power motors.
13.常用扬程单位换算 （吉林吉特设计依据的扬程单位为"米"）。
Common units transfer of lift. JL-JET’s basic unit is "H".
14.常用流量单位换算 （吉林吉特设计依据的流量单位为"升/分"）。
Common units transfer of flow. JL-JET’s basic unit is "L/min"
吉林吉特版权所有，盗用必究！
All rights reserved by JL-JET.
It will lose 1 meter‘s lift when you add a 90 ° elbow or three-way pipe in the pipeline.
2.每20米管路长度损失约1米扬程。
It will lose 1 meter’s lift when the pipeline exceeds 20 meters.
3.如果出水管路直径有过渡（缩径）或分流（三通等），为了减少流体能量在管路中的损失，请使过渡段（缩径）或分流（三通等）尽量远离泵的出口，以接近喷嘴处为最好。
If there is a reducing bend or a three-way in the pipeline. In order to reduce the energy loss, make the reducing bend or the three-way as far away from the pump, close to the nozzle for the best.
4.吉林吉特建议:单级泵能满足要求时,尽量不选择多级泵.因为: ①多级泵对介质清洁度要求高,容易堵塞. ②多级泵流道变长,对介质热输入高,冷却效果受影响.③多级泵有机械密封,不耐干转和污物,属于易损件。
JL-JET suggestions: Try not to choose the multi-stages pump if the single-stage pump can meet the requirements. Because the multi-stages pump: Ⅰ.It is easily blocked by impurity. Ⅱ. The heat input is high. Ⅲ. The mechanical seal is the wearing part. It is not adapt dry running.
5.如果选用多级泵,同轴泵要优先于断轴泵. 因为电机水泵同轴结构,避免了联轴器产生故障的可能.另外,同轴泵的液上部分尺寸占用空间小. 但是液下尺寸要求较长时,断轴泵要优于同轴结构。
The coaxial pump takes precedence over the separate shaft pump. Because the coaxial structure, avoiding the coupling failure. In addition, the coaxial pump’s motor part takes smaller occupation than separate structure. But when there is long under water size requirement, the separate structure is better than the coaxial pump.
6.如选用PJT-XXA，LXB-XXA和DJB-XXA系列型号时，遇有管路较长且泵进水口高于液面设计时，请您在泵的进水端加装逆止阀,使停机后泵腔及管路中介质不倒灌回水箱,以利于再开机时介质迅速到达工作点。
If you chose JL-JET’s model such as PJT-XXA，LXB-XXA and DJB-XXA, please add a cut-off valve at the inlet part of pipeline.
7.在选泵用于粘度较高的介质时，建议您选择功率扬程时选高一个等级的型号或特殊订货。
For high viscosity media, JL-JET advice you to choose a higher level power model.
8.如遇同一台机床使用两台泵（或排屑机），电器设计务必单独控制，避免单台使用时另一台空运行。
If a machine uses two pumps, electrical control system must be designed individually. This is to avoid one pump working another idling.
9.吉林吉特产品为220V/380V 50Hz三相双电压，默认电机出厂接线为Y接380V, 如有特殊要求，请提前说明 Our default connection model is "Y"380V and 50Hz, if there are special requirements, please notify JL-JET.
10.吉林吉特产品标准配用的电机的防护等级为IP44. 如有特殊要求，请提前说明。
JL-JET’s default protection level is IP44. if there are special requirements, please notify JL-JET.
11.吉林吉特可承接特殊频率、特殊电压及三防等特殊要求订货。
JL-JET can accept orders of special frequency and voltage
12.为了保护环境,节能减排,同时节约采购成本. 吉林吉特建议您, 请尽量选择低功率电机。
For the purpose of environment protection, JL-JET suggests you to choose low power motors.
13.常用扬程单位换算 （吉林吉特设计依据的扬程单位为"米"）。
Common units transfer of lift. JL-JET’s basic unit is "H".
| 单位Unit | 米 （H） | 兆帕 （MPa） | 千克 （KG）/CM2 | 巴 （bar） |
| 1 米 | 1 | 0.01 | 0.1 | 0.1 |
| 1 兆帕 | 100 | 1 | 10 | 10 |
| 1千克/CM2 | 10 | 0.1 | 1 | 1 |
| 1 巴 | 10 | 0.1 | 1 | 1 |
14.常用流量单位换算 （吉林吉特设计依据的流量单位为"升/分"）。
Common units transfer of flow. JL-JET’s basic unit is "L/min"
| 单位Unit |
升/分 （L/min） |
吨/时 （m3/h） |
英尺3/时 （ft3/h） |
英国加仑/分 （Ukgal/min） |
美国加仑/分 （Usgal/min） |
美国桶/日 （bbl/d） |
| 1升/分 | 1 | 0.06 | 2.1189 | 0.21997 | 0.264188 | 9.057 |
| 1立方米(吨)/时 | 16.667 | 1 | 35.314 | 3.667 | 4.403 | 151 |
| 1立方英尺/时 | 0.4719 | 0.028317 | 1 | 0.1038 | 0.1247 | 4.2746 |
| 1英国加仑/分 | 4.546 | 0.02727 | 9.6325 | 1 | 1.20032 | 41.1 |
| 1美国加仑/分 | 3.785 | 0.2273 | 8.0208 | 0.8326 | 1 | 34.28 |
| 1美国桶/日 | 0.1104 | 0.00624 | 0.23394 | 0.02428 | 0.02917 | 1 |
吉林吉特版权所有，盗用必究！
All rights reserved by JL-JET.