According to different methods of use, winches can be divided into four types: manual winches, electric winches, pneumatic winches, and hydraulic winches. At present, the largest marine hydraulic winch is 350T, and the weight of the equipment reaches 150T. Lifting And Traction Winch,Pneumatic Winches,Hydraulic Winches,Electric Winches Rugao Yaou Import & Export Trade Co., Ltd , https://www.ntyaous.com
1, submersible sewage pump power supply voltage is too low because the power supply voltage is too low when the submersible sewage pump can not start, the submersible sewage pump is usually required 380V power supply voltage, the power supply voltage should be adjusted to more than 342V. In the case of emergencies with emergency disasters, submersible sewage pumps must be used. When the power supply voltage is lower than 342V, temporary emergency measures can be taken: the current setting of the submersible sewage pump protection switch is appropriately adjusted, the submersible sewage pump is used, and the protection switch is used. Do not trip frequently due to overload. However, when used, the current of the submersible sewage pump stator winding should not exceed 11 times of its rated current, and the use time should be controlled so that the submersible sewage pump will not be overheated due to long use time and overloading, resulting in overheating of the stator winding and overheating. damage.
2, submersible sewage pump power supply phase failure or power submersible sewage pump in use, such as broken cable core, fuse blow, poor contact protection switch, protective device action, resulting in submersible pump stall, should carefully check the power supply Whether there is a fault in the fuses, control protection switches and protective devices in the circuit, check if the power supply is disconnected or cut off, or if the fuse is disconnected or the power supply is cut off due to the action of the fuses, control relays and protective devices, or poor contact. Repair the power failure or phase failure caused by fuses, control protection switches, and protection devices; if power supply interruptions occur, power should be restored.
3, submersible sewage pump impeller stuck because the sewage pump impeller was stuck in water, debris, etc. caused the submersible pump stall, should dismantle the pump, remove aquatic plants, debris, etc., so that the submersible pump can operate normally.
4, submersible sewage pump cable is too thin, too long, the voltage drop is too large cause sewage pump power supply voltage is too low, the motor can not start. When the submersible sewage pump is used far away from the power source, the cable is long and the voltage drop is too large, the cable cross-section should be properly thickened: if the cable length is doubled, the cable cross-section should be doubled correspondingly.
5, submersible sewage pump plugs, switches and other connectors poor contact Submersible sewage pump plugs, switches and other connectors due to poor contact caused submersible pump can not start, should repair or replace bad connectors.
6. Thermal protector action of submersible sewage pump When the submersible sewage pump is stopped due to the thermal protector during operation, the cause of the thermal protector action should be checked first. If the submersible sewage pump fails, it should immediately find and eliminate the fault; if the motor is overloaded, it should find out the cause of the overload and eliminate it: if the power supply voltage is too low, the motor current is too large; or because the impeller is damaged Winding, rotation is not smooth; whether it is a bearing damage, causing the stator and rotor of the motor to wipe and the ambient temperature is too high. Because the action of the thermal protector indicates that the temperature of the submersible pump has exceeded the rated temperature, the temperature of the stator winding should be reduced. After the thermal protector is automatically reset, the submersible pump can be operated again.
7, the submersible sewage pump thermal protector damage elimination method is to first check the thermal protector damage. If the thermal protector is damaged due to the failure of the submersible sewage pump, the submersible sewage pump should be immediately found and eliminated; if the thermal protector is damaged due to the quality of the thermal protector or due to the use of the thermal protector If it is caused by a long time, the same type of thermal protector should be replaced.
8. Stator Winding Damage of Submersible Sewage Pump Damage to the stator winding of the submersible sewage pump causes damage to the stator windings of the submersible motor, troubleshooting, and prevention of damage to the stator winding of the submersible motor; and then to the stator winding of the submersible motor. Dismantle the repair and replace the damaged stator windings as required.
9, single-phase submersible motor centrifugal switch poor contact or damage exclusion method is to first check the centrifugal switch damage is related to submersible sewage pump failure, if the submersible sewage pump is faulty, you should immediately find and remove the sewage pump failure, and then repair Or replace the centrifugal switch.
According to the reel form, it is divided into single reel and double reel.
According to the reel distribution, there are parallel double reels and front and rear double reels.
The main technical indicators of hydraulic winches include rated load, supporting load, rope speed, rope capacity, etc.
A winch is a light and small lifting device (see hoisting machinery) that uses a reel to wind a wire rope or chain to lift or tow heavy objects, also known as a hoist. The winch can be used alone or as a component of machinery such as lifting, road construction and mine hoisting. It is widely used because of its simple operation, large rope winding volume and convenient displacement. The winch is also known as the hoist. The product has high versatility, compact structure, small size, light weight, heavy lifting, and convenient transfer. It is widely used in construction, water conservancy projects, forestry, mines, docks, etc. for material lifting or flat towing, and can also be used as modern electronic control Supporting equipment for automatic operation line.
According to the power, the winch is divided into three categories: manual, electric and hydraulic.
The transmission mechanism of the handle rotation of the manual winch is equipped with a stopper (ratchet wheel and pawl), which can keep the heavy object in the required position. The manual winch used for assembling or lifting heavy objects should also be equipped with safety handles and brakes. Manual winches are generally used in places where the lifting capacity is small, the facilities are poor, or where there is no power supply.
Electric winches are widely used in places with heavy work and large traction requirements. The electric motor of the single-drum electric winch (pictured) drives the drum through the reducer, and a brake is installed between the electric motor and the input shaft of the reducer. In order to meet the needs of lifting, traction and rotation, there are also double-drum and multi-drum winches. Generally, a winch with a rated load lower than 10T can be designed as an electric winch.
The hydraulic winch is mainly a winch with a larger rated load. Generally, the winch from 10T to 5000T is designed as a hydraulic winch. The winch can be divided into:
Marine winches: Marine winches can be divided into drag winches, mooring winches, anchor winches, traction winches, etc.
Engineering winch: Mainly used in engineering, with functions such as hoisting and hoisting as the main function.
Mine winches: divided into hoisting winches, dispatching winches, shaft sinking winches, column return winches, rake mine winches, column return winches, etc.
Cable winch: mainly used when laying cables.
Nine reasons why the submersible sewage Pump cannot start and how to eliminate it: