Overview of HYJ Oil Transfer Platform Motor

The HYJ-600kW/800kW/1000kW/1200kW motor is suitable for driving and controlling voltage source variable frequency drive systems, and can be used to drive drilling winches, mud pumps, turntables, etc. It can also be used as a driving motor for other variable frequency speed control devices.

Structural characteristics of HYJ oil transfer platform motor

The structure of the HYJ-600kW/800kW/1000kW/1200kW motor is horizontal. Single standard shaft extension three-phase cage asynchronous motor. The shaft has a taper of 1:9.6 and is equipped with an oil groove for hydraulic coupling. The motor is equipped with a protective forced ventilation system and comes with a built-in fan. The explosion-proof mark is Ex d e pz IIB T4 Gc

The junction box of the motor is a positive pressure explosion-proof junction box, explosion-proof type: Ex d e pz IIB T4 Gc, suitable for Zone 2 locations with Class IIB gas environment.

The stator core is made by laminating round punched sheets made of high-quality cold-rolled silicon steel plate with a thickness of 0.5mm. The machine base adopts a welded steel plate structure. There is an axial cooling air duct between the back of the stator core and the machine base. The stator coil is made by winding TCR thin film deposited wires.

Each conductive ring is made of copper busbar winding, and after insulation wrapping, it is fixed on the iron core pressure ring by a supporting clamping device. The three-phase lead wires of the winding are connected to each conductive ring using high-strength bolts. The symbols for three-phase outgoing lines are U, V, and W.

The end cap adopts a cast structure. The rotor is a copper bar squirrel cage structure with double row axial ventilation holes. The guide bar, end ring, and guard ring are all made of special high-strength copper alloy material.

Basic data of HYJ oil transfer platform motor

Temperature rise limit

Tightening torque of bolts

Use, maintenance, and upkeep of HYJ oil transfer platform motor

1. The installation and debugging of motors should be carried out by professional installers. Installation, use, and maintenance personnel must be familiar with the safety regulations, laws and regulations, and explosion-proof professional knowledge related to the product.

2. If the air intake motor of the motor is used in a non safe place, the air inlet box of the fan must be removed and connected to the pipeline (the pipeline is not allowed to have a right angle bend). Clean and dry fresh air should be taken from a safe place. The air inlet should be equipped with a dust and water removal device not lower than IP54, and attention should be paid to preventing water from being sucked into the pipeline due to negative pressure at the air inlet. The joints of pipelines and the joints between pipelines and fan inlets must be strictly sealed to prevent the inhalation of explosive gases from hazardous areas. When starting the fan, pay attention to confirming that the fan direction matches the direction sign.

3. During the operation of the bearing detection motor, it is recommended to use a temperature gauge to measure the temperature rise of the bearing at regular and fixed points, and make statistics to determine the working status of the bearing based on the development trend of the bearing temperature rise. Measure the temperature rise of the bearing at a fixed point on the outer surface of the outer bearing cover, once a day, and make statistics.

4. Maintain and inspect the bolts of the motor for looseness. If there is, tighten the bolts. It is recommended to check for looseness every time a well is drilled. Due to the poor working environment of the motor, there may be dust and dirt on the inner and outer surfaces of the motor. Without affecting the motor's heat dissipation, it is also prone to moisture absorption, leading to corrosion of metal parts and decreased insulation performance. So it is recommended to blow the inner and outer surfaces of the motor every time a well is drilled. If using compressed air of about 0.6MPa to blow the outer surface of the motor, remove the air outlet cover and insert the high-pressure air duct (hose) from the air outlet into the interior of the motor to blow the inner surface. At the same time, remove and wash the fan inlet grille and motor outlet cover, air dry them before installation. The bearings of the motor do not have oil cups, and under normal use, no lubricating grease needs to be replenished within three years. After three years of use, it is necessary to disassemble, clean, inspect, and re add lubricating grease (model: FAG-Arcano1L135V)

Key points for explosion-proof of HYJ oil transfer platform motor

1. This product is a positive pressure protection type, but there are already live parts (such as fan power supply) in the junction box that are powered on before the ventilation is completed. Therefore, the junction box still needs to meet the requirements of increased safety protection. The sealing gasket of the junction box must be checked regularly to ensure its integrity and non aging, and assembled in place.

2. Before the main power supply of the motor is powered on, it must be purged and ventilated with a minimum flow rate of 110m3/min. The purging and ventilation time should not be less than 30 minutes. When the motor inlet is connected to the pipeline, additional ventilation time should be added. The additional ventilation time should ensure that the replacement volume can reach 5 times the pipeline volume.

3. Electrical connection: All cables entering and exiting through cable entry devices should ensure that the minimum outer diameter matches the minimum outer diameter allowed by the cable entry device. Otherwise, the cable cannot be locked, and the reliability of the locking should be checked during installation. After connecting the auxiliary power supply terminals such as fan power supply and heating belt power supply, the electrical clearance and creepage distance should be checked to meet the requirements of GB3836.3-2010. Bolt diameter M6 M8 M10 M12 M16 Tightening torque (N-m) 7 ± 120 ± 3 37 ± 5 62 ± 7 155 ± 15 Bolt diameter M20 M22 M24 M33 Tightening torque (N-m) 300 ± 20 340 ± 24 700 ± 36 1300 ± 65

4. The internal and external grounding must be reliably connected.

5. The wind pressure switch circuit is an intrinsic safety circuit and should maintain a distance of at least 50mm from other non intrinsic safety circuits. The wind pressure switch must be equipped with a safety barrier when in use. The explosion-proof level of the safety barrier should not be lower than [Ex ib Gb] IIB, and the electrical parameters should match the parameters of the wind pressure switch (AC 250V 0.4A Li=0 Ci=0).

6. The wind pressure switch must be interlocked with the main power supply. When the pressure inside the positive pressure shell drops to the set pressure, the wind pressure switch will activate and output an alarm shutdown signal, cutting off the main power supply.

7. The pressure switch protection action pressure value of this product has been set to 140Pa when it leaves the factory. It is not allowed to adjust it without authorization during on-site use, otherwise it will cause the positive pressure explosion-proof performance to fail.

8. When using the heating belt inside the motor for dehumidification operations, it should be ensured that the interior of the motor is in a safe zone environment.

9. Do not block the motor air outlet during use to avoid affecting the motor's heat dissipation.

10. The interior of the motor should be cleaned according to its usage, especially the cleanliness of the air inlet, which is directly related to heat dissipation.

11. The use and maintenance of explosion-proof accessories such as explosion-proof fans, emergency stop buttons, and cable entry devices should be carried out in accordance with the corresponding product instructions.

Common Fault Analysis and Troubleshooting of HYJ Oil Transfer Platform Motor

The motor cannot start

1. Lack of phase.

2. Winding grounding or inter turn short circuit.

Low insulation resistance

1. The winding is damp or soaked with water.

2. The winding insulation is covered with dust and oil stains.

3. The insulation of the lead wire has aged and broken.

4.绕组绝缘老化。

The motor casing is electrified

1. Winding grounding.

2. The winding is damp and the insulation is aging.

When the motor is running, the ammeter pointer is unstable and swings, and the rotor conductor bar is welded or broken.

There is noise during the operation of the electric motor, which is abnormal

1. The bearing is worn and faulty.

2. Loose stator and rotor iron cores.

3. Winding malfunction (such as short circuit)

4. The bearings lack lubricating grease.

5. Friction between the stator and rotor or larger sand particles entering the air gap.

6. The system has a small moment of inertia.

Motor overheating or smoking

1. Dust accumulates in the air gap.

2. The inner and outer surfaces of the motor are covered with dust or foreign objects, which affects the heat dissipation of the motor.

3. The guide bar is broken or the welding is open.

4. Interturn short circuit or grounding of the winding.

5. Two phase operation of the motor.

Motor vibration

1. Bearing wear.

2. The guide bar is broken and the welding is open.

3. Winding faults (short circuit, open circuit, grounding, etc.).

4. The iron core is deformed or loose.

5. Improper installation of the pulley.

6. The anchor bolts of the motor are loose.

Bearing overheating exceeds the specified limit

1. Too much or too little lubricating grease.

2. The oil quality is poor and contains impurities.

3. The bearing has faults, wear, and debris.

4. The pulley is too small or the belt is too tight. ·

5. The bearing oil clearance is too large or too small.