| 摘要 |
The present disclosure is directed to methods and apparatuses for controlling pump power draw from an engine in horizontal directional drilling. Various embodiments of the invention are directed to a horizontal directional drilling machine (12) that comprises an engine (201) that outputs mechanical energy, a rotation pump (202) that draws upon the mechanical energy output by the engine to operate a rotation motor (19) that rotates a drill string (22), a thrust pump that draws upon the mechanical energy output by the engine to operate a thrust motor (17) that longitudinally moves the drill string, a mud pump (204) that draws upon the mechanical energy output by the engine to operate a mud motor that delivers fluid through the drill string, and control circuitry (211, 212, 213) comprising a controller and memory, the processor configured to execute program instructions stored on the memory, processor execution of the stored program instructions causing the control circuitry to calculate a rotation pump power draw from the engine, calculate a thrust pump power draw from the engine, calculate a mud pump power draw from the engine, calculate a total power draw based on the rotation pump power draw, the thrust pump power.draw and the mud pump power draw, compare the total power draw to a threshold, and decrease mechanical energy draw of each of the rotation pump, the thrust pump, and the mud pump from the engine based on the total power draw exceeding the threshold.
|
