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鱼缸潜水泵在应用中应注意 作者:水泵知识

    (1)选购潜水泵时应留意其型号、流量和扬程。如选用的规格不恰当,将无法获得足够的出水量,不能发挥机组的效率。另外,还应搞清电机的旋转方向,某些类型的潜水泵正转和反转时皆可出水,但反转时出水量小、电流大,其反转会损坏电机绕组。为防止潜水泵在水下工作时漏电而引发触电事故,应装有漏电保护开关。
    (2)安装潜水泵时,电缆线要架空,电源线不要太长。机组下水时切勿使电缆受力,以免引起电源线断裂。潜水泵工作时不要沉入泥中,否则会导致电机散热不良而烧坏电机绕组。安装时,电机的绝缘电阻不应低于0.5M∏:13kW以下的电机可直接启动,13kW以上的应采用启动补偿器。
    (3)尽量避免在低压时开机。电源电压与额定电压不可相差10%,电压过高引起电机过热而烧坏绕组,电压过低则电机转速下降,如达不到额定转速的70%时,启动离心开关会闭合,造成启动绕组长时间通电而发热甚至烧坏绕组和电容器。不要频繁地开关电机,这是因为电泵停转时会产生回流,若立即开机,会使电机负载启动,导致启动电流过大而烧坏绕组。
    (4)切莫让电泵长期超负荷运转,不要抽含沙量大的水,电泵脱水运行的时间不宜过长,以免使电机过热而烧毁。机组在作业中,操作者必须随时观察其工作电压和电流是否在铭牌上规定的数值内,若不符合应使电机停止运转,找出原因并排除故障。
    (5)平时多检查电机,如发现下盖有裂纹、橡胶密封环损坏或失效等,应及时更换或修复,以防水渗入机器。

(1) submersible pump should pay attention to choose their models, flow and head. Specifications such as the selection of inappropriate and will not be able to obtain sufficient water, the efficiency of generating units can not be played. In addition, should understand the direction of motor rotation, certain types of submersible pump are transferred and can be reversed when the water, but the reverse when the water in small, large current, its reversal will damage motor windings. Submersible pump in order to prevent the work in the underwater leakage accidents caused by electric shock should be equipped with residual current protection switches.
     (2) when the installation of submersible pumps, to the overhead cable, not a very long power cord. Do not water when the unit so that power cable, power cord so as to avoid fracture. Submersible pumps do not work into the mud, or would result in poor motor cooling motor winding burn. When installed, the electrical insulation resistance should not be less than 0.5MΠ: 13kW motor can be directly below the start, 13kW more than start the compensator should be used.
     (3) try to avoid when in the low-voltage boot. Power supply voltage and rated voltage is not a difference of 10%, caused by high voltage electrical burn winding overheating and voltage drop in motor speed is too low, such as less than 70% of rated speed, the centrifugal start switch will close, resulting in around the head start time electricity and heat and even burn winding and capacitors. Do not frequently switch motor, This is because the pump will stop to have a return, if an immediate start, will start the electrical load, resulting in excessive current and start winding burn.
     (4) do not allow long-term electric overload, do not draw large sediment water, dewatering pump run time should not be too long, to avoid overheating and burning motor. Units in operation, the operator must be ready to observe the operating voltage and current in the nameplate on the value within the provisions of, if not in line with the motor to stop operation should be made to identify the reasons and troubleshooting.
     (5) more than usual to check the electrical, such as cracks found under the cap, rubber sealing ring, such as damage or failure should be a timely replacement or repair to water infiltration into the machine.
鱼缸<a href=../ep/?%25C7%25B1%25CB%25AE%25B1%25C3--1.htm>潜水泵</a>在应用中应注意鱼缸<a href=../ep/?%25C7%25B1%25CB%25AE%25B1%25C3--1.htm>潜水泵</a>在应用中应注意