AutoGrease
Intelligent Autonomous Stuffing Box Greasing Unit
How do you know your Stuffing Box is getting adequate maintenance and the seals are maintaining integrity? The AutoGrease compensates for the normal loss of grease using predetermined set points, automatically triggering the AutoGrease pump. The system will report out if the grease pressure drops to zero a set number of times indicating action is required on either tightening the gland nut or replacing the seals.
Seal Integrity Monitoring
As grease is pumped between the seals in the stuffing box, the AutoGrease monitors and maintains set pressures. During normal operation, grease is slowly displaced from the cavity, causing the seal pack pressure to slowly decline. When a predetermined low set pressure point is reached, the pump will automatically turn on and replenish to a set high pressure.
If the seal loses integrity, the grease pressure will drop to zero and trigger the pump, however, if the pump cannot maintain set pressure the AutoGrease will send out a signal via SCADA or other telemetry package indicating maintenance to be required. Continuous monitoring informs you of a problem inadequate time, prior to the operation being shut down.
By installing the AutoGrease, you can be confident that adequate maintenance and constant monitoring are being performed without sending technicians to the field. This not only reduces OPEX but enables ‘intelligent deployment’ ensuring the most critical jobs get addressed first with little to no downtime.
THE PROBLEM
A beam pump strokes at a rate of 2-3 per minute, and rod rotators typically take up to an hour per revolution. This makes it difficult to see if it's working properly, rotating the rod to prevent uneven wear on the tubing and rods. Partial failure is particularly difficult to detect manually, where the rod is only being rotated through an arc rather than complete revolutions.
Rod Rotator Lubrications & Monitoring
With the addition of a manifold, AutoGrease can increase its output to also auto-grease a rod rotator. A grease line is run from the rod rotator to the manifold, so the rod rotator gets greased at the same time as the stuffing box. Changing manifold elements changes the amount of grease pumped to fit the application.
Features
- Connects with pump jack to ensure greasing is only occurring when pump jack is operational
- Low level grease alarm
- Can prolong the greasing function for up to 12 months
- Grease on-demand, small amounts of grease frequently rather than one-shot systems
An additional sensor package fits on the rod rotator and is integrated into the system.
1 Controller will:
- Connect to a rod rotator sensor
- Auto-grease a stuffing box
- Auto-grease a rod rotator
AutoGrease Sensor will detect if a rod rotator is in either failure mode of the 2 failure modes:
1. Complete failure
2. Partial failure when the stripped, worm gear causes the rod to rock back-and-forth rather than complete rotations.
Specifications
| Power | 110 VCA |
| Communication | RS485- MODBUS RTU PROTOCOL |
| Suitable for Hazardous Location | Intrinsically Safe |
| Operating Temperature Range | -20°C to +85°C (-4°F to 185°F) |
| Grease Type | Up to NLGI II |
