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| 水电站浸没三螺杆泵3G60*6C配37kw-4电机用于陕西石泉水力发电厂 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 发布时间：2015-5-11 8:56:01 点击次数： | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
●3G三螺杆泵输送各种油类时应注意事项：When conveying various oil matters should be paid attention to: 1、输送40~150mm2/s的油类最合适，允许按泵的最高工作压力使用。2、输送40mm2/s以下的油类，为保证泵的流量及寿命应降压使用。3、输送150mm2/s以上的油类，且进油管道过长，弯头过多，泵工作时如产生噪音或振动现象，则应考虑更换低一级转速的电机运转或缩短吸入管道，减少弯头。1, delivery was 40 ~ 150 / s best oils, permitted to use according to the maximum working pressure of pump.2, transmission oil, under 40 was/s in order to ensure the pump flow and life should be used antihypertensive.3, transmission of more than 150 was/s oils, and the oil inlet pipe is too long, too much bend, such as noise or vibration phenomenon when the pump work, should consider to replace the low level of rotational speed of motor operation or shorten the suction pipe, reducing elbow. ●3G型三螺杆泵安装要求:3 g type three-screw pump installation requirements: 1、安装前应检查泵的油封是否良好，并检查泵在运输中是否损坏，可用手转动联轴器是否有卡劲现象，如有则应拆泵进行清洗，修理和校正。1, before installation should check whether the oil seal of the pump is good, and check the pump is damaged in transportation, turn the coupling usable hand card trouble phenomenon, if there is any should tear open pump for cleaning, repair and calibration.2、安装泵的进油和排油管道时，其管径不得小于泵的进油和出油口口径，进油管道不得过长，弯头不得过多，否则将影响泵的工作状态。2, installation of pump suction and discharge of oil pipe, the pipe diameter shall not be less than the oil inlet of the pump and the oil outlet diameter, inlet pipe shall not be too long, elbow shall not too much, otherwise will affect the pump working condition.3、当有两台以上的泵安装在同一条主管线上，为便于泵的启动，在近泵的排油管上必须安装逆止阀。3, when more than two head of pump installed in the same line, to facilitate pump start-up, in close to the oil drain pump must be installed on a non-return valve.4、对于在较高温度（指60℃以上）下输送粘度大的油类（如：重油）的备用泵，必须是热备用泵，否则泵在低温下启动会造成电机过载或泵损坏。（建议在靠近泵的排油管上的逆止阀旁，并联安装一个小回流阀，对备用泵可微启回流阀，使泵缓慢逆转，其逆转速≤100转/分，使部分热油经常流过泵内，达到泵热备用目的）。4, for under high temperature (above 60 ℃) conveying the viscosity of oil (such as: heavy oil) of the standby pump, it must be hot standby pump, otherwise the pump at low temperature can cause the damage of motor overload or pump.(suggest near the exhaust non-return valve on the tubing pump, a small return valve installed in parallel, differentiable and the backflow preventer to standby pump, the pump slow reversal, the reverse speed 100 r/min or less, often make some hot oil flows through the pump, to pump hot standby purposes).5、输送介质内含有机械杂质。将严重影响泵的运转和降低使用寿命，因此在泵安装前，必须仔细清除进油管内的焊渣，沙粒等杂质，并应在进油管道靠近泵处安装滤器，滤器网孔大小，可根据工作情况及介质粘度确定。（一般可用40~80目网），过滤面积一般不得小于进油管横截面积的20倍。5, mechanical impurity is contained within the transmission medium.Will seriously affect the operation and reduce the service life of pump, so before the pump installation, must be carefully clean up the feed tube welding slag, impurities such as grains of sand, and shall be installed in the inlet pipe near the pump filter, filter mesh size, is decided according to the working condition and medium viscosity.Available (40 ~ 80 mesh net), filter area generally shall not be less than 20 times into the cross-sectional area of the tubing 6、尽量在泵进油和排油口处的螺纹孔上连接压力表和真空表，以便于观察泵的运转状态。6, as far as possible in the pump suction and discharge of oil on the threaded hole mouth connect pressure gauge and vacuum gauge, in order to observe the pump running state.7、原动机与泵的转轴必须在同一中心线上，可用直尺测隙规在联轴器圆周上间隔90°处检查。8、原动机与泵的转向必须一致，严格禁止原动机驱动泵逆转。电机接线时，应先脱开电机与泵的联轴器，对电机作试运转。使其转向与泵的转向标志一致。7, prime mover and the pump shaft must be in the same center line, available ruler feeler gauge in the coupling of the circumference of a circle by 90 ° in check.8, steering engine and pump must be consistent, strictly prohibited prime motor driven pump reversal.Electrical wiring, should first release coupling of motor and pump, a test run on the motor.The steering pump and steering sign agreement.
●3G型三螺杆泵的使用 1、泵启动前，必须全开进油和排油闸阀。The use of 3 g type three-screw pump 1, before starting the pump, oil inlet must be fully open and oil discharge gate valve.2、首次启动泵或再次使用长期封存的泵时，泵内无介质，应在泵的进油腔灌注适量输送介质，避免泵干启动。2, start the pump for the first time or again for a long time use of the pump, the pump inside without medium, should be in the inlet of the pump cavity perfusion amount transfer medium, avoid dry start pump 3、泵启动后，应密切注意电流表，压力表和真空表的数值，超出规定值时，应停泵找出原因后，再行启动。3, the pump starts, should pay close attention to current meter, pressure gauge and vacuum gauge value, beyond the specified value, should stop pump after find out, start again.4、轴封处点滴泄露，应属正常现象，当泄露量大量增加时，对软填料密封应压紧填料压盖，对机械密封应停泵修复后，再行启动。4, shaft sealing drip leakage, should belong to the normal phenomenon, when the leak amount of increase, the soft packing seal should be compression packing gland, to pump mechanical seal shall be shutdown after repair, start again.5、用高温蒸汽清扫管线时，应避免高温蒸汽通过泵内。5, with high temperature steam cleaning pipeline, should avoid high temperature steam through the pump.6、如果泵长期不工作时，应进行油封，并定期检查油封情况，必要时重新油封。6, if the pump is not working for a long time, should carry on the oil seal, and regularly check oil seal, oil seal again if necessary.
●三螺杆泵特点及优点： （1）压力和流量范围宽阔，流量范围0.2～320m3/h最高工作压力可达5MPa；（2）运送液体的种类和粘度范围宽广,粘度范围1mm2/s-760mm2/s；（3）因为三螺杆泵内的回转部件惯性力较低，故可使用很高的转速；（4）吸入性能好，具有很强的自吸能力；（5）流量均匀连续，振动小，噪音低，几乎没有脉动；（6）三螺杆泵结构坚实，安装方便有(卧式、立式、法兰式、插装式）保养容易；（7）三螺杆泵具有很强的耐热性，一般工作温度是（1~250°C)超过此温度需特制；（8）根据所输送介质需要还可提供加热或冷却结构；（9）三螺杆泵几乎没有磨损，三螺杆泵只要选型正确，使用寿命长。（10）三螺杆泵的工作效率高。 ●三螺杆泵注意事项 1.三螺杆泵的转速选用:三螺杆泵的流量与转速成线性关系,相对于低转速的螺杆泵,高转速的螺杆泵虽然能增加了流量和扬程,但功率明显增大,高转速加速了转子与定子间的磨耗,必定使螺杆泵过早失效,而且高转速螺杆泵的定转子长度很短,极易磨损,因而缩短了螺杆泵的使用寿命。通过减速机或无级调速机构来降低转速,使勘转速保持在每分三百转以下较为合理的范围内,与高速运转的螺杆泵相比,使用寿命能延长几倍。 2.螺杆泵的品质:现在市场上的螺杆泵的种类较多,相对而言,进口的螺杆泵设计合理,材质精良,但价格较高,服务方面有的不到位,配件价格高,订货周期长,可能影响生产的正常运行。国内生产的大都仿制进口产品,产品质量良莠不齐,在选用国内生产的产品时,在考虑其性价比的时候,选用低转速,长导程,传动量部件材质优良,额定寿命长的产品。 3.确保杂物不进入泵体:湿污泥中混入的固体杂物会对螺杆泵的橡胶材质定子造成损坏,所以确保杂物不进入泵的腔体是很重要的,很多污水厂在泵前加装了粉碎机,也有的安装格栅装置或滤网,阻挡杂物进入螺杆泵,对于格栅应及时清捞以免造成堵塞。 4.保持恒定的出口压力:螺杆泵是一种容积式回转泵,当出口端受阻以后,压力会逐渐升高,以至于超过预定的压力值.此时电机负荷急剧增加.传动机械相关零件的负载也会超出设计值,严重时会发生电机烧毁,传动零件断裂.为了避免螺杆泵损坏,一般会在三螺杆泵出口处安装旁通溢流阀,用以稳定出口压力,保持泵的正常运转。 5.避免断料:三螺杆泵决不允许在断料的情形下运转,一经发生,橡胶定子由于干磨擦,瞬间产生高温而烧坏,所以,粉碎机完好,格栅畅通是螺杆泵正常运转的必要条件之一,为此,有些螺杆泵还在泵身上安装了断料停机装置,当发生断料时,由于螺杆泵其有自吸功能的特性,腔体内会产生真空,真空装置会使螺杆泵停止运转。 ●螺杆磨损五点原因: 1、每种塑料，都有一个理想塑化的加工温度范围，应该控制料筒加工温度，使之接近这个温度范围。粒状塑料从料斗进入料筒，首先会到达加料段，在加料段必然会出现干性磨擦，当这些塑料受热不足，熔融不均时，很易造成料筒内壁及螺杆表面磨损增大。同样，在压缩段和均化段，如果塑料的熔融状态紊乱不均，也会造成磨损增快。 2、转速应调校得当。由于部分塑料加有强化剂，如玻璃纤维、矿物质或其他填充料。这些物质对金属材质的磨擦力往往比熔融塑料的大得多。在注塑这些塑料时，如果用高的转速成，则在提高对塑料的剪切力的同时，亦将令强化相应地产生更多被撕碎的纤维，被撕碎的纤维含有锋利末端，令磨损力大为增加。无机矿物质在金属表面高速滑行时，其刮削作用也不小。所以转速不宜调得太高。
4、 物料中如有碳酸钙和玻璃纤维等填充料，能加快螺杆和机筒的磨损。 5、 由于物料没有塑化均匀，或是有金属异物混入料中，使螺杆转动扭矩力突然增加，这种扭矩超出螺杆的强度极限，使螺杆扭断。这是一种非常规事故损坏。
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