原文:潜入水下泵的故障与维修潜入水下泵是由异步电动机和水泵组成,广泛应用于农业排水灌溉和工业供水行业。有干式、油浸式、水冷等几种。由于泵体长期潜入水中事情,再加之部分地区的水质不好、电网质量较差,维护经验不足,所以故障率较高,维修量也较大。一、潜入水下泵常见故障一、漏电漏电是潜入水下泵最常见的故障,也是危害人身安全的最危险因素之一。故障现象为合上闸刀时,变压器配电房中的漏电保护器便跳闸(如果没有漏电保护器会至关危险,会造成电机烧坏)。这主要是由于潜入水下泵泵体内进水,排污泵造成潜入水下泵电机绕组的绝缘电阻降低,导致保护器动作。此时用摇表或万用表的R×10kΩ挡,测电机绕组对外壳有一定的漏电阻。水泵长期使用,造成机械密封端面严重磨损,水由此渗入,浸湿电机绕组形成漏电。可将拆下的潜入水下泵电机放在烘房中,或用100-200W白炽灯泡烘干;测绝缘电阻无穷大,之后将机械密封换新,再将泵装好即可投入使用。2、漏油潜入水下泵漏油主要是由于密封盒磨损严重,多级泵造成密封盒油室漏油或出线盒处密封不良所致。密封盒油室漏油时,在进水节处可见油迹。在进水节处有一个加油孔,拧下螺丝,不雅察油室是否进水。若油室进水,则是密封不良,应改换密封盒,以防油室进水严重,渗入电机内。若潜入水下泵电缆根部有油化现象,属于电机内漏油。一般为密封胶塞密封不良或电机重绕后使用引线分歧格造成的;有些是水泵接线板破裂造成的。检查确定后,换合格新品即可。并测量电机的绝缘程度,若绝缘不好应及时处理,同时将电机内的油换新。3、通电后,叶轮不转通电后水泵有嗡嗡的交流声,叶轮不转。切断电源,管道泵在进水口处拨动叶轮,若拨不动,申明转子被卡死。可拆开水泵检查,是否转子下端轴承滚珠破碎导致卡死转子;若能拨动叶轮,但通电后叶轮却不转,故障原因有可能是轴承严重磨损,通电时定子产生的磁性将转子吸住而不能转动。改换轴承再组装水泵,拨动叶轮灵活,故障排除。4、水泵出水无力、流量小取出水泵,检查转子转动灵活,通电转子能转。拆开水泵检查发现,水泵下端轴与轴承之间松动,且转子下移,因此转子转动无力,输出功率小。采用适当的垫圈垫在转子与轴承之间,使转子上移,安装试机,故障即可排除。二、潜入水下泵维修注意事项一、拆卸要领要正确拆卸前,要在前后端盖与机座的合缝处用錾子打上记号。因为中开泵电机在出厂时的装置是至关合理的,修理后如不按原样装置,有可能会造成稍有误差而引起转轴不太灵活。拆卸时要仔细不雅察绕组的烧坏程度,初步分析烧坏的原因,要注意轻微的扫膛、滚珠破裂等容易看出的故障。在拆修坏绕组时,要注意保护好铁芯及塑料护圈。如果要领分歧适,有可能会使铁芯外涨及伤残,电机在通电时有可能产生电磁效应而使铁芯振动,绕组自身振动,很容易造成绝缘纸、电磁线的绝缘损坏。拆线要领是用斜口钳从一头端部剪断,另一头用钳子抽出。2、自制线模要合适,嵌线要正确要嵌好一相后,再嵌另一相,使端部形成三层最简单的面,端部必须包扎牢固,防止装置时划伤。3、调整好限位螺钉的位置调整时要当真仔细,做到转子转动自如,并且消防泵空载电流最小。之后要将锁紧螺母拧紧。4、接头的防水绝缘要处理好接头处剥去护套及绝缘层,并断根铜线表面的漆层、氧化层,绞接后锡焊。之后断根掉尖角、毛刺及焊液,用聚乙烯带半叠包6层,再用绦纶胶粘带半叠包2层,作为机械保护层。5、通电试验前做好准备事情试验前电机内腔必须注满清水或防锈缓冲剂,作用是冷却绕组和润滑轴承,否则电机绕组会很快烧毁。冬季不用时要排净电机内的水,以防冻裂泵体。6、潜入水下泵要使用正规厂家生产的QYW型聚乙稀绝缘尼龙护套耐水电磁线电泵应垂直吊入水中使用,最大倾斜角度不应跨越15°,卧放使用会大大缩短电泵的使用寿命

"Submersible pump failures and maintenance"是由中国隔阂泵网提供的水泵行业新闻,译文仅供参考。另外,中国隔阂泵网还提供相关产品搜刮:隔阂泵型号、隔阂泵价格、隔阂泵技术、隔阂泵新闻、隔阂泵生产商等。

译文:Submersible pump failures and maintenance Submersible pump is the asynchronous motor and pump which is widely used in agricultural irrigation and industrial water supply industry.With dry,oil-immersed,water and other several.As the pump long into the water to work together in some areas the water quality is not good,power quality and poor maintenance of lack of experience,so failure rates are relatively high,maintenance is large.1,submersible pump Fault 1,leakage Leakage is asubmersible pump the most common faults,but also endanger the personal safety of the most dangerous factor.Failure phenomena closed Zhadao,the transformer substation in the leakage protection will trip(if there is no leakage protection will be very dangerous,can cause motor Shaohuai).This is mainly due to submersible pumps in the pump body water,resulting in submersible pump motor winding insulationPneumatic and electric diaphragm pumps resistance is lowered,leading protector action.At this point the shaker tabl eor multimeter R×10kΩblock,measuring motor winding to the case have some leakage resistance.Pump long-term use,resulting in mechanical seal severe abrasion,water,thus infiltration,wet motor windings form aleakage.Can be removed in the submersible pump motor on the drying room,or with 100-200W incandescent bulb drying;measuring insulation resistance infinite,then seal new ones,and then pump bottles and can be put into use.2,oil spills Submersible pump leakage was mainly due to sealed box badly worn,causing sealed box oil chamber leakage or outlet box sealed bad result.Sealed box oil chamber leakage,the in water festival was observed on traces of oil.In the inlet section and there is afilling hole,unscrew the screws to observe the oil chamber is water.If the oil chamber water,it is sealed bad,replace the sealed boxes to prevent the oil chamber inlet serious infiltration of the motor.If the submersible pump cable roots,oil phenomenon,is the motor oil spills.Generally sealed Sweage pumps&Sludge pumpsrubber plug seal is bad or motor rewind after the use of lead failure caused;some pump wiring board rupture caused.Inspection determined,for qualified new can.And measure the electrical insulation level,if the insulation well be in time,while the motor oil renewal.3,power,the impeller does not turn Is powered pumps are buzzing hum,the impeller does not turn.Cut off the power,in the intake office Toggle impeller,if the call does not move,indicating the rotor was stuck.Detachable pump check whether the rotor bottom bearing ball crushing lead stuck rotor;if clicked impeller,but after powering the impeller does not turn,failure may be due to bearing serious wear,power of stator generated magnetic rotor suck and can not move.Replacement bearings are assembled pump,Slide impeller flexible troubleshooting.4,pump water weakness,flow rates Remove the water pump,check the rotor rotation flexibility,power rotor to turn.Open pump inspection found water pump at the bottom axis and bearing between the loose,and the rotor down,so the rotor rotation weakness,the output power of small.Appropriate gasket pad on the rotor and bearing between the rotor on the move,install test machine,failure can be ruled out.Second,submersible pump repair notes 1,demolition method to correct Demolition of the former,to around the end cap and base of the commissure with achisel tagged.Because the motor in the factory assembly is fairly reasonable,repaired if not as is assembly,may Multi-stage pumpscause aslight error caused by rotor is not flexible.Demolition to ca refully observe the winding Shaohuai level,preliminary analysis of the Burn,to pay attention to minor sweep bore,ball rupture easily see the faults.In the overhaul bad winding,we should pay attention to protect the core and the plastic retainer.If the method is inappropriate,may make iron core outside the rose and the disabled,the motor power may produce electromagnetic effects Ershi core vibration,winding its vibration,it is likely to cause insulation paper,magnet wire insulation damage.Suture removal method is to use oblique mouth clamp from one end cut off,the other end with pliers out of.2,self-line mode,which should be embedded in line to the right To insert agood one phase,then embedded in another phase,to end the formation of three planes ends must be wrapped securely to prevent the assembly scratch.3,adjust the limit screw position Adjustment,serious and detailed,so thatSlurry pumps the rotor rotating freely,and no-load current minimum.And then to lock nut tightened.4,connec tor waterproof insulated handle well Layup stripped jacket and the insulating layer,and clear the copper surface of the paint,oxide,and articulated after the soldering.Then get rid of sharp corners,burrs and welding liquid polyethylene with ahalf stack package layer 6,and then polyester adhesive tape and ahalf fold pack 2level,as amechanical protection layer.5,power test before the well prepared Before the test motor cavity to be Other pumpsfilled with water or rust buffer,the role of the cooling coil and lubricating bearings,otherwise the motor windings will soon be destroyed.Winter when not cleaned the motor of water,to prevent the cracking pump.6,submersible pump to use the regular factory production QYW type polyethylene insulated nylon jacket waterproof Wire Pump should be vertical hanging into the water used,the maximum tilt angle should not exceed 15°,lying down use will significantly reduce the pump life

原文来源: