MOTOR INSTALLATION AND TROUBLESHOOTING

centrifugal pump's motor

When replacing a motor, its exact dimensions, as well as speed, hp, and torque characteristics should be determined and duplicated if the same performance is desired. When replacing a motor, the entire system should be inspected for internal and external degradation. Neither the motor mounting nor the mechanical coupling should exhibit signs of wear.

The power supply and connections should not be damaged. These should be frequently checked for proper frequency, voltage, and voltage balance between phases. Poor and broken connections of one of the supply lines are a major cause of voltage unbalance. Overload relays for each phase should protect against extreme (greater than 5%) voltage unbalance.

Misalignment between the motor and the driven machine (e.g., centrifugal pump ) can cause bearing failures and shaft breakage. Excessive vibrations frequently indicate misalignment. All motor feet must be fastened to a flat, preferably machined, surface. Otherwise, the frame can bend when the motor is tightened down, which twists the motor frame and causes misalignment. Care should be taken to evenly tension mounting bolts. If torque values are specified, follow the manufacturer’s recommendations. The mounting should be inspected frequently. If necessary, retighten bolts with the proper torque. If vibration is detected, one or more of the motor feet may have to be shimmed. A few thick shims are preferable to many thin shims if it is necessary to align motor and machine (pump) shafts. Misaligned couplings create bearing loading in both the motor and the machine, causing high-speed distortions and also increasing power consumption.

Motor should be greased using manufacturer’s specified greases in concert with manufacturer’s specified lubrication frequency and quantities (sealed ball bearings cannot be lubricated after manufacture). Relubrication is necessary to replenish grease that has broken down by oxidation or been lost by evaporation and centrifugal force.

Inspect and keep cooling and ventilation vents clear of obstructions.

If a motor burns out, the windings should be inspected for signs of single phasing, short circuiting, overloading, and voltage unbalance. Any cause of winding damage should be identified and corrected. If a motor burns out, the circuit supplying the voltage should also be inspected for broken or shorted wires, burnt contacts, or voltage unbalance.

ELECTRIC MOTORS FOR SHALE SHAKERS

dual deck shale shakers

Shale shaker motors are generally three-phase induction motors that are explosion proof, having NEMA design B or similar characteristics (Table 1). The number of magnetic poles in a shale shaker motor can be four (1800 rpm synchronous shaft speed at 60 Hz), six (1200 rpm), or two (3600 rpm). The motor should have independent, third-party markings indicating its suitability in explosive or potentially explosive environments. It is recommended that these motors be suitable for Class I, Division 1, Groups C and D, and Group IIB atmospheres. The motor also should have the proper operating temperature or code designation for the anticipated ambient temperature.

Continue reading “ELECTRIC MOTORS FOR SHALE SHAKERS”

ELECTRIC MOTOR APPLICATIONS ON OIL RIGS

vibrating motor for shale shaker

Continuous-duty electric motors are an integral part of a drillings rig’s solids-control and processing systems. Centrifugal pumps that feed hydrocyclones, circulate mud for mixing, and transfer mud to and from reserve and also into the trip tank are powered by electric motors. Shale shakers, mud cleaners, centrifuges, and pit agitators are also driven by electric motors.

Continue reading “ELECTRIC MOTOR APPLICATIONS ON OIL RIGS”

Drilling fluid waste High G drying shaker

High G drying shaker is mostly used to process drilling fluid or drilling cuttings. It can work more effectively with better separation result

Drying shale shaker brief introduction

Drying shale shaker is similar as common shale shaker. It can be used as first phase solids control equipment also the first stage of drilling waste management

It is usually designed in linear motion and high vibration mode, are used in processing cuttings, playing an important role in the waste drilling mud treatment. It brings customer both the economical and the environmental benefits

High G shaker vibrator motor

Obviously, Hi-G shale shaker will be utilized vibrator motor with high vibration strength to achieve high separation efficiency.

The motor can be Martin vibrator motor, Ita-Vibras, or other famous brand motor. The electronic components in starter will be top brand ones such as ABB, SIEMENS, SCHNEIDER to make the shakers more reliable and stable

Aipu shale shaker
Aipu shale shaker

Actually, if we need different vibration force we can adjust the eccentric blocks at motor ends. It can help us increase or decrease the vibration strength

Considering different clients request different electrical system please do confirm input system before order. Such as 380V/50Hz, or 380V/60Hz. We will do customization on motors and starters.

Drying shaker capacity

The drying shaker capacity is related with shaker screen area, vibration strength, and the drilling mud property. Usually, Aipu single drying shale shaker capacity ranged 500~660GPM. According to clients’ capacity demand we can configure it as dual tandem or triple tandem shaker

Aipu High G shaker screen

Presently, Aipu drying shaker model is Hunter-M series. The shaker screen sized 585x1165mm. There can be 3 panel or 4 panel for option. The popular shaker screen is composite frame one, rare client will request steel frame ones

Aipu high G shaker screen is interchangeable with Mongoose type shaker screen. We utilized high quality S.S304~316L wire cloth for reliable quality and performance

Please feel free to contact Aipu for more information on high G shaker or screen. We’ll give you optimal complete solution and suggestion ASAP.