2W.W密封型双螺杆泵的优点
1、输送液体平稳、无脉动、无搅拌、振动小、噪音低。
2、有很强的自吸性能，多相混输时，含气率不高于80%，含沙量不高于500g/m3
3、外置轴承结构，采用独立润滑，可以输送各种非润滑性介质。
4、采用同步齿轮驱动，二转子之间不接触，即使短时间空转也无妨。
5、泵体带有加热套，可以输送各种清洁或含有固体小颗粒的低粘度或高粘度介质（一般颗粒直径小于0.12-0.2mm)
6、正确的选用材料，甚至可以输送很多有腐蚀性的介质。
7、双吸式结构，转子上没有轴向力。
8、轴端采用机械密封或波纹管机械密封，具有寿命长、泄漏少、适用范围广的特点。
2W.W密封型双螺杆泵性能范围
1、工作压力4.0MPa
2、流量范围 1～1000m3/h
3、温度范围-20～120℃
4、介质粘度 1～3000mm2/s，降低转速可达到106mm2/s
介质粘度对双螺杆泵性能影响较大，泵的名义排量是指在特定粘度条件下的排量，为保证泵能在较高效率下工作，在试验不充分时，建议按下列粘度条件选择转速：
介质粘度cSt 转速r/min
＜400 1500
400 ～
1200～3600 750
对于粘度更高的介质，所应选用的转速和驱动电机功率，请与制造厂联系。
2W.W密封型双螺杆泵应用举例
1、油田：用作油、气、水、微量细小固相颗粒等多相混输泵及原油输送泵。
2、造般业：用作船用装载泵，船底扫舱及污水处理，主机润滑泵，燃料油泵。
3、石油化学工业 ：用作各种树脂、颜料、石蜡、油漆、油墨、乳胶、各种油品、原油、重油等装载和运输泵。
4、热电厂：用作重油、原油输送泵，主机润滑油泵。
5、食品工业：用作洒精、蜂蜜、糖浆、果汁、动植物油、牛奶、浆油输送泵。
2W.W密封型双螺杆泵型号及代码说明
1、系列代码说明
2W.W：卧式，外置轴承式
2W.N：卧式，内置轴承式
2、规格代码说明
规格代码反映泵的尺寸大小，工作能力范围，代码大，一般尺寸大，压力也高。详见技术特性表。
3、密封代码说明
J：一般机械密封
B：金属波纹管机械密封
4、材料代码说明
Ⅰ：一般工程结构钢为主。
Ⅱ：马氏体耐蚀钢为主。
Ⅲ：奥氏体耐蚀钢为主。
主要零部件材料选用表
| 型号 规格 | 压力 MPa | 1450r/nin | 950r/min | 720r/min | |||||||||||||
| 30cSt | 75cSt | 150cSt | 300cSt | 450cSt | 750cSt | 1500cSt | 2500cSt | ||||||||||
| m3/h | kw | m3/h | kw | m3/h | kw | m3/h | kw | m3/h | kw | m3/h | kw | m3/h | kw | m3/h | kw | ||
| 2.5-15 | 0.6 | 2.4 | 1.5 | 3 | 2.2 | 3.2 | 2.2 | 3.3 | 2.2 | 1.8 | 1.5 | 1.8 | 2.2 | 1.3 | 2.2 | 1.3 | 2.2 |
| 1.0 | 1.7 | 2.2 | 2.6 | 2.2 | 2.9 | 3 | 3.1 | 3 | 1.7 | 2.2 | 1.7 | 2.2 | 1.2 | 2.2 | 1.2 | 2.2 | |
| 2.5-20 | 0.4 | 3.9 | 1.5 | 4.3 | 1.5 | 4.4 | 2.2 | 4.5 | 2.2 | 2.6 | 1.5 | 2.6 | 2.2 | 1.9 | 2.2 | 1.9 | 2.2 |
| 0.6 | 3.4 | 1.5 | 4 | 2.2 | 4.2 | 2.2 | 4.3 | 2.2 | 2.5 | 2.2 | 2.5 | 2.2 | 1.8 | 1.5 | 1.8 | 2.2 | |
| 2.8-18 | 0.6 | 4.3 | 2.2 | 4.8 | 2.2 | 4.9 | 3 | 5 | 3 | 2.9 | 2.2 | 2.9 | 3 | 2.1 | 3 | 2.1 | 3 |
| 1.0 | 3.7 | 3 | 4.4 | 4 | 4.7 | 4 | 4.8 | 4 | 2.7 | 3 | 2.7 | 3 | 2 | 3 | 2 | 4 | |
| 2.8-24 | 0.4 | 6.3 | 2.2 | 6.6 | 2.2 | 6.7 | 3 | 6.8 | 3 | 4 | 2.2 | 4 | 3 | 2.9 | 2.2 | 2.9 | 3 |
| 0.6 | 5.9 | 2.2 | 6.4 | 4 | 6.5 | 4 | 6.6 | 4 | 3.8 | 3 | 3.8 | 3 | 2.7 | 3 | 2.7 | 3 | |
| 3.1-22 | 0.6 | 7.7 | 3 | 8.2 | 4 | 8.3 | 4 | 8.4 | 4 | 5 | 3 | 5 | 4 | 3.7 | 3 | 3.7 | 4 |
| 1.0 | 7 | 4 | 7.8 | 5.5 | 8 | 5.5 | 8.1 | 5.5 | 4.8 | 4 | 4.8 | 5.5 | 3.5 | 4 | 3.5 | 5.5 | |
| 3.1-30 | 0.4 | 11.1 | 3 | 11.4 | 3 | 11.5 | 4 | 11.6 | 5.5 | 6.9 | 3 | 6.9 | 4 | 5.1 | 3 | 5.1 | 4 |
| 0.6 | 10.6 | 4 | 11.1 | 5.5 | 11.3 | 5.5 | 11.4 | 5.5 | 6.7 | 4 | 6.7 | 5.5 | 4.9 | 4 | 4.9 | 5.5 | |
| 3.2-18 | 1.6 | - | - | 4.8 | 7.5 | 5.8 | 7.5 | 6.3 | 7.5 | 2.4 | 5.5 | 2.4 | 5.5 | 0.9 | 4.0 | 0.9 | 5.5 |
| 2.0 | - | - | 4.2 | 7.5 | 5.5 | 7.5 | 6.1 | 11 | 2.3 | 7.5 | 2.3 | 7.5 | 0.9 | 4.0 | 0.9 | 5.5 | |
| 2.5 | - | - | 3.4 | 11 | 5.0 | 11 | 5.8 | 11 | 2.1 | 7.5 | 2.1 | 7.5 | 0.8 | 5.5 | 0.8 | 5.5 | |
| 3.2-24 | 1.0 | 5.5 | 5.5 | 7.6 | 7.5 | 8.4 | 11 | 8.7 | 11 | 4.6 | 5.5 | 4.6 | 5.5 | 2.7 | 5.5 | 2.7 | 5.5 |
| 1.25 | 4.6 | 7.5 | 7.2 | 11 | 8.2 | 11 | 8.5 | 11 | 4.5 | 5.5 | 4.5 | 7.5 | 2.6 | 5.5 | 2.6 | 7.5 | |
| 1.6 | 3.4 | 7.5 | 6.7 | 11 | 7.8 | 11 | 8.3 | 11 | 4.3 | 7.5 | 4.3 | 7.5 | 2.5 | 5.5 | 2.5 | 7.5 | |
| 3.2-30 | 0.6 | 9.7 | 5.5 | 11 | 5.5 | 11.5 | 5.5 | 11.7 | 7.5 | 6.8 | 5.5 | 6.8 | 5.5 | 4.3 | 5.5 | 4.3 | 5.5 |
| 1.0 | 8.0 | 7.5 | 10.2 | 7.5 | 10.9 | 7.5 | 11.2 | 7.5 | 6.5 | 5.5 | 6.5 | 5.5 | 4.3 | 5.5 | 4.3 | 5.5 | |
| 3.2-44 | 0.4 | 16.4 | 5.5 | 17.5 | 7.5 | 17.9 | 7.5 | 18.1 | 7.5 | 11.2 | 4.0 | 11.3 | 5.5 | 8.0 | 4.0 | 8.0 | 4.0 |
| 0.6 | 15.2 | 7.5 | 17 | 7.5 | 17.4 | 7.5 | 17.6 | 7.5 | 10.9 | 5.5 | 11 | 5.5 | 7.8 | 5.5 | 7.8 | 5.5 | |
| 3.4-24 | 1.6 | - | - | 7.4 | 11 | 9 | 11 | 9.8 | 11 | 5.7 | 7.5 | 5.7 | 7.5 | 4.3 | 7.5 | 4.3 | 11 |
| 2.0 | - | - | 6.5 | 11 | 8.5 | 11 | 9.5 | 15 | 5.5 | 11 | 5.5 | 11 | 4.1 | 7.5 | 4.1 | 11 | |
| 2.5 | - | - | 5.3 | 15 | 7.8 | 15 | 9.1 | 15 | 5.1 | 11 | 5.1 | 11 | 3.9 | 11 | 3.9 | 11 | |
| 3.4-30 | 1.0 | 8.3 | 7.5 | 11.4 | 7.5 | 12.4 | 11 | 12.9 | 11 | 7.6 | 7.5 | 7.6 | 7.5 | 5.6 | 7.5 | 5.6 | 7.5 |
| 1.25 | 6.9 | 11 | 10.7 | 11 | 12.1 | 11 | 12.6 | 11 | 7.4 | 7.5 | 7.4 | 11 | 5.5 | 7.5 | 5.5 | 11 | |
| 1.6 | 5 | 11 | 9.9 | 11 | 11.5 | 11 | 12.3 | 15 | 7.1 | 11 | 7.1 | 11 | 5.3 | 7.5 | 5.3 | 11 | |
| 3.4-40 | 0.6 | 14.8 | 5.5 | 16.8 | 7.5 | 17.5 | 7.5 | 17.8 | 11 | 10.6 | 7.5 | 10.6 | 7.5 | 7.8 | 7.5 | 7.8 | 7.5 |
| 1.0 | 12.2 | 11 | 15.5 | 11 | 16.6 | 11 | 17.2 | 11 | 10 | 7.5 | 10 | 7.5 | 7.4 | 7.5 | 7.4 | 7.5 | |
| 3.4-56 | 0.4 | 21.8 | 5.5 | 23.2 | 7.5 | 23.7 | 7.5 | 24 | 11 | 14.3 | 5.5 | 14.4 | 7.5 | 10.5 | 5.5 | 10.5 | 7.5 |
| 0.6 | 20.2 | 7.5 | 22.5 | 11 | 23.1 | 11 | 23.4 | 11 | 13.8 | 7.5 | 13.9 | 7.5 | 10.1 | 7.5 | 10.1 | 7.5 | |
| 4.0-26 | 1.6 | 12.4 | 15 | 14.6 | 15 | 15.7 | 18.5 | 9.3 | 11 | 9.3 | 15 | 7 | 11 | 7 | 15 | ||
| 2.0 | 11.2 | 15 | 13.9 | 18.5 | 15.3 | 22 | 9 | 15 | 9 | 15 | 6.8 | 15 | 6.8 | 15 | |||
| 2.5 | 9.6 | 18.5 | 13.1 | 22 | 14.8 | 22 | 8.6 | 15 | 8.6 | 15 | 6.6 | 15 | 6.6 | 15 | |||
| 4.0-32 | 1.0 | 13.9 | 11 | 18.2 | 15 | 19.6 | 15 | 20.3 | 15 | 12.2 | 11 | 12.2 | 15 | 9.1 | 11 | 9.1 | 11 |
| 1.25 | 12 | 15 | 17.3 | 15 | 19.1 | 15 | 20 | 18.5 | 11.9 | 11 | 11.9 | 15 | 8.9 | 11 | 8.9 | 15 | |
| 1.6 | 16.1 | 18.5 | 18.4 | 18.5 | 19.5 | 22 | 11.5 | 15 | 11.5 | 15 | 8.6 | 11 | 8.6 | 15 | |||
| 4.0-44 | 0.6 | 24.6 | 11 | 27.4 | 11 | 28.3 | 11 | 28.8 | 15 | 17.3 | 11 | 17.3 | 11 | 12.8 | 11 | 12.8 | 11 |
| 1.0 | 21.1 | 15 | 25.7 | 15 | 27.2 | 15 | 27.9 | 18.5 | 16.6 | 11 | 16.6 | 15 | 12.3 | 11 | 12.3 | 15 | |
| 4.0-64 | 0.4 | 37.2 | 11 | 39.1 | 11 | 39.8 | 11 | 40.1 | 15 | 24.1 | 11 | 24.2 | 11 | 17.8 | 11 | 17.8 | 11 |
| 0.6 | 35 | 11 | 38 | 15 | 38.9 | 15 | 39.4 | 18.5 | 23.5 | 11 | 23.7 | 11 | 17.3 | 11 | 17.3 | 11 | |
| 4.5-30 | 1.6 | 17.4 | 18.5 | 22.3 | 22 | 24 | 22 | 24.8 | 30 | 14.9 | 18.5 | 15 | 18.5 | 11.1 | 18.5 | 11.2 | 18.5 |
| 2.0 | 15.1 | 22 | 21.3 | 30 | 23.4 | 30 | 24.4 | 30 | 14.5 | 22 | 14.6 | 22 | 10.9 | 18.5 | 11 | 22 | |
| 2.5 | 12.3 | 30 | 20 | 30 | 22.6 | 30 | 23.9 | 30 | 14.2 | 22 | 14.3 | 22 | 10.6 | 18.5 | 10.6 | 22 | |
| 4.5-40 | 1.0 | 29.1 | 18.5 | 32.4 | 18.5 | 33.5 | 22 | 34 | 22 | 20.5 | 18.5 | 20.6 | 18.5 | 15.3 | 15 | 15.3 | 18.5 |
| 1.25 | 27.5 | 18.5 | 31.6 | 22 | 33 | 30 | 33.7 | 30 | 20.2 | 18.5 | 20.3 | 22 | 15 | 18.5 | 15.1 | 22 | |
| 1.6 | 25.3 | 30 | 30.6 | 30 | 32.3 | 30 | 33.2 | 30 | 19.9 | 22 | 20 | 22 | 14.7 | 18.5 | 14.8 | 22 | |
| 4.5-52 | 0.6 | 41.8 | 15 | 43.9 | 15 | 44.6 | 18.5 | 45 | 22 | 27.3 | 15 | 27.4 | 18.5 | 20.3 | 15 | 20.3 | 15 |
| 1.0 | 38.9 | 22 | 42.4 | 22 | 43.6 | 30 | 44.2 | 30 | 26.6 | 18.5 | 26.7 | 18.5 | 19.7 | 15 | 19.7 | 18.5 | |
| 4.5-72 | 0.4 | 57.3 | 15 | 58.8 | 15 | 59.3 | 18.5 | 59.6 | 22 | 36.1 | 15 | 36.2 | 15 | 26.9 | 15 | 26.9 | 18.5 |
| 0.6 | 55.5 | 18.5 | 57.7 | 22 | 58.5 | 22 | 58.9 | 22 | 35.5 | 22 | 35.6 | 18.5 | 26.3 | 18.5 | 26.3 | 22 | |
| 5.0-28 | 2.5 | 17.3 | 37 | 24.7 | 37 | 27.2 | 37 | 28.4 | 45 | 17.1 | 30 | 17.3 | 37 | 12.9 | 30 | 12.9 | 37 |
| 3.2 | 23.1 | 45 | 26.3 | 45 | 27.9 | 55 | 16.7 | 37 | 17 | 45 | 12.7 | 37 | 12.8 | 37 | |||
| 4.0 | 21.3 | 55 | 25.3 | 55 | 27.3 | 75 | 16.2 | 45 | 16.5 | 45 | 12.4 | 37 | 12.6 | 45 | |||
| 5.0-40 | 1.6 | 34.6 | 37 | 39.5 | 45 | 41.1 | 45 | 42 | 45 | 25.4 | 30 | 25.6 | 37 | 19.9 | 30 | 20 | 37 |
| 2.0 | 32.3 | 37 | 38.4 | 45 | 40.5 | 45 | 41.5 | 45 | 25.1 | 37 | 25.3 | 37 | 18.8 | 37 | 18.9 | 37 | |
| 5.0-40 | 2.5 | 29.4 | 45 | 37.1 | 45 | 39.7 | 55 | 41 | 55 | 24.7 | 37 | 24.9 | 37 | 18.5 | 37 | 18.6 | 37 |
| 5.0-52 | 1.0 | 50.7 | 30 | 53.9 | 30 | 55 | 37 | 55.5 | 37 | 33.8 | 30 | 34 | 30 | 25.3 | 30 | 25.4 | 30 |
| 1.25 | 49.1 | 30 | 53.1 | 37 | 54.4 | 37 | 55.1 | 45 | 33.5 | 30 | 33.7 | 37 | 25 | 30 | 25.1 | 37 | |
| 1.6 | 46.9 | 37 | 52 | 45 | 53.7 | 45 | 54.6 | 55 | 33.1 | 37 | 33.3 | 37 | 24.7 | 30 | 24.7 | 37 | |
| 5.0-64 | 0.6 | 66.1 | 22 | 68.1 | 22 | 68.8 | 30 | 39.1 | 37 | 42.3 | 22 | 42.4 | 30 | 31.6 | 22 | 31.7 | 30 |
| 1.0 | 63.2 | 30 | 66.6 | 37 | 67.7 | 37 | 68.2 | 45 | 41.5 | 30 | 41.7 | 30 | 30.9 | 30 | 31 | 30 | |
| 5.0-96 | 0.4 | 96.7 | 22 | 98.1 | 22 | 98.6 | 30 | 98.8 | 37 | 60.3 | 22 | 60.4 | 30 | 45.1 | 22 | 45.1 | 30 |
| 0.6 | 89.7 | 30 | 96.9 | 37 | 97.7 | 37 | 98 | 45 | 59.6 | 30 | 59.7 | 30 | 44.4 | 30 | 44.5 | 30 | |
| 5.0-30 | 2.5 | 26.7 | 45 | 34.1 | 45 | 36.6 | 55 | 37.8 | 75 | 22.7 | 45 | 23 | 45 | 17.1 | 45 | 17.3 | 45 |
| 3.2 | 23 | 55 | 32.5 | 55 | 35.7 | 75 | 37.2 | 75 | 22.2 | 45 | 22.5 | 55 | 16.8 | 45 | 17 | 55 | |
| 4.0 | 30.6 | 75 | 34.6 | 75 | 36.6 | 75 | 21.8 | 55 | 22.1 | 55 | 16.6 | 55 | 16.8 | 55 | |||
| 5.5-44 | 1.6 | 43 | 45 | 51.7 | 45 | 54.6 | 55 | 56 | 55 | 33.8 | 37 | 34.1 | 45 | 25.5 | 37 | 25.6 | 45 |
| 2.0 | 39 | 55 | 49.9 | 55 | 53.6 | 55 | 55.4 | 75 | 33.2 | 45 | 33.6 | 55 | 25 | 45 | 25.2 | 55 | |
| 2.5 | 34.1 | 55 | 47.8 | 75 | 52.3 | 75 | 54.6 | 75 | 32.7 | 55 | 33.3 | 55 | 24.7 | 45 | 24.8 | 55 | |
| 5.5-56 | 1.0 | 64.3 | 37 | 70 | 37 | 71.9 | 45 | 72.9 | 55 | 44.1 | 37 | 44.4 | 45 | 33 | 37 | 33.2 | 45 |
| 1.25 | 61.6 | 45 | 68.8 | 45 | 71.1 | 55 | 72.2 | 75 | 43.7 | 37 | 44 | 45 | 32.7 | 37 | 32.8 | 45 | |
| 1.6 | 57.9 | 55 | 67 | 55 | 70 | 75 | 71.5 | 75 | 43.1 | 45 | 43.4 | 45 | 32.3 | 37 | 32.4 | 45 | |
| 5.5-80 | 0.6 | 99.7 | 30 | 103 | 37 | 104 | 45 | 105 | 45 | 64 | 30 | 64.2 | 37 | 48 | 30 | 48 | 37 |
| 1.0 | 94.6 | 45 | 100 | 55 | 102 | 55 | 103 | 75 | 62.8 | 45 | 63.1 | 45 | 46.9 | 37 | 47 | 45 | |
| 5.5-120 | 0.4 | 146 | 30 | 149 | 37 | 150 | 45 | 150 | 55 | 91.8 | 30 | 92 | 37 | 68.6 | 30 | 68.7 | 37 |
| 0.6 | 143 | 45 | 147 | 55 | 148 | 55 | 149 | 55 | 90.7 | 37 | 90.9 | 45 | 67.6 | 37 | 67.6 | 45 | |
| 6.1-36 | 2.5 | 40.9 | 75 | 51.9 | 75 | 55.7 | 75 | 57.4 | 90 | 33 | 55 | 33.4 | 75 | 24.9 | 55 | 25 | 75 |
| 3.2 | 35.4 | 75 | 49.5 | 90 | 54.2 | 90 | 56.6 | 110 | 32.4 | 75 | 32.9 | 75 | 24.5 | 75 | 24.7 | 75 | |
| 4.0 | 46.8 | 110 | 52.7 | 110 | 55.6 | 110 | 31.7 | 75 | 32.4 | 90 | 24 | 75 | 24.3 | 75 | |||
| 6.1-48 | 1.6 | 67.6 | 55 | 74.8 | 75 | 77.3 | 75 | 78.5 | 75 | 47.5 | 55 | 47.8 | 75 | 35.7 | 55 | 35.8 | 75 |
| 2.0 | 64.2 | 75 | 73.3 | 75 | 76.3 | 75 | 77.8 | 90 | 47 | 75 | 47.5 | 75 | 35.2 | 55 | 35.3 | 75 | |
| 2.5 | 60 | 75 | 71.4 | 90 | 75.2 | 90 | 77.1 | 110 | 46.4 | 75 | 46.9 | 75 | 34.9 | 55 | 34.9 | 75 | |
| 6.1-64 | 1.0 | 99 | 45 | 103 | 55 | 105 | 75 | 106 | 75 | 64.5 | 45 | 64.7 | 55 | 48.4 | 45 | 48.5 | 55 |
| 1.25 | 96.6 | 55 | 102 | 75 | 104 | 75 | 105 | 90 | 64.1 | 55 | 64.3 | 75 | 48 | 55 | 48 | 75 | |
| 1.6 | 93.3 | 75 | 101 | 75 | 103 | 90 | 104 | 90 | 63.2 | 75 | 63.7 | 75 | 47.2 | 55 | 47.5 | 75 |
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