Traveling Block ControllerComputer Controlled Crown and Floor ProtectionIncorporating “Soft Stop” , “Intelligent Crownamatic” and advanced Kinetic Energy Monitoring and Control a FIRMS® modular component |
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 SERIES 4800
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CROWN PROTECTION Derrick designs generally incorporate extra space at the crown area to allow for safer operation of the traveling block in an area that is hard for the driller to see, and also to allow for potential traveling block overrun of the upper mechanical stop caused by high block ascending speeds near the crown. Fitting portable top-drives to rigs reduces this extra space increasing the possibility of the traveling block impacting the crown. By installing the Traveling Block Controller, safe and accurate operation of the traveling block is maintained to the maximum upper block travel limit. The Traveling Block Controller eliminates the problem of overrunning the top stop by monitoring and controlling the blocks ascending velocity when the traveling block is being operated near the crown. This allows the traveling block’s upper travel limit to be safely moved closer to the crown, eliminating the necessity of adding extra derrick height. FLOOR PROTECTION Protecting the floor has always been difficult because block speed must be continually monitored and controlled to prevent the drawworks brakes from being overrun. Because the Traveling Block Controller is an intelligent kinetic energy monitoring system (kems) with an added "Soft Stop" feature, it ensures that the safe and accurate operation of the traveling block is maintained all the way to lower block travel limit. When the traveling block is descending, the TBC monitors the block’s position and speed against the hook load, if the downward speed is greater than the preset drawworks brake capacity parameters, the magnetic brake is activated slowing the blocks descending velocity. When the traveling block reaches the absolute lower limit, the drawworks mechanical brake is set. SYSTEM OPERATION The TBC continually monitors block position, velocity and hook weight. If the traveling block’s UPWARD velocity versus distance from the upper limit is too high, the TBC reduces the block’s speed by reducing the signal to the driller’s foot throttle control. When the block has slowed to the desired speed, the signal to the foot throttle is returned. If the traveling block’s DOWNWARD speed versus position from the lower limit is too high, the TBC reduces the block’s speed by energizing the magnetic brake. The TBC also calculates the stopped position of the block if the mechanical brake were to be set. If this stopped position reaches the low travel limit, the TBC sets the mechanical brake. If the traveling block reaches its upper or lower travel limit, the TBC sets the drawworks brake, stopping the traveling block. By providing a controlled slowing, or “Soft Stop”, of the traveling block as it approaches it’s upper or lower travel limit, the problem of overrunning the top or bottom stop is eliminated. Also eliminated are the potential hazards normally associated with suddenly stopping a fast ascending, lightly loaded, traveling block. |
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- Specifications:
- Power: Nominal: 115/230VAC 50/60Hz 135 to 370VDC Brownout: 95 to 264VAC, 47 to 400HZ
- Operating Temperature: -40°to+185°F(-40°to
+85°C)
Innovative Electronics
P.O. Box 1367, Stafford, Texas, USA 77497
Voice (281) 240-7355 Fax (281) 240-7356