Coring drill mud pump control method for railway engineering exploration

A railway engineering and control method technology, applied in pump control, earth-moving drilling, mechanical equipment, etc., can solve the problems of drill bit wear, inability to remove drill cuttings, inability to achieve stepless speed regulation, etc., to achieve simple structure, precise control, Simple effect of control process

Inactive Publication Date: 2020-04-10
四川诺克钻探机械有限公司
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the flow rate is too much, the pressure will increase, which will affect the actual drill bit pressure and the corresponding cutting performance, if the flow rate is too small, the drill cuttings cannot be removed, and the drill bit wi

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the present invention Examples, not all examples.

[0025] According to the formula mud flow = 0.121 * mud pump speed, so the mud flow can be controlled by adjusting the mud pump speed, so:

[0026] This embodiment provides a method for controlling a mud pump of a core drilling rig for railway engineering exploration, including the following steps:

[0027] 1) Connect the mud pump to the hydraulic motor, and set a throttle valve for controlling the oil return flow on the oil return pipeline of the hydraulic motor. After the equipment inspection is completed, start the hydraulic motor to drive the mud pump to rotate;

[0028] 2) Slo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the technical field of slurry pump control, and discloses a coring drill slurry pump control method for railway engineering exploration. The method comprises the following steps: 1) connecting a mud pump with a hydraulic motor, and starting the hydraulic motor to drive the mud pump to rotate; (2) in the drilling process of the drill rod, detecting the mud pressure in a drill hole through a pressure detector, and transmitting the detected mud pressure value P to a console on the ground; (3) after the console receives the mud pressure value P, adjusting the opening degree of a throttle valve to control the flow of a hydraulic motor in an intervention mode that human intervention is matched with computer control system intervention, so the rotating speed of the mud pump is controlled, and then the flow of mud in a drill hole is adjusted. According to the invention, the hydraulic motor is directly connected with the slurry pump, stepless speed regulation of the mudpump is achieved, the opening degree of the throttle valve is adjusted in an adjusting mode of combining human intervention and computer system intervention, the rotating speed of the mud pump is controlled, then the mud flow is controlled, the process is simple, and the control is accurate.

Description

technical field [0001] The invention belongs to the technical field of mud pump control, in particular to a method for controlling a mud pump of a core drilling rig used for railway engineering exploration. Background technique [0002] During the drilling process, the mud has the following functions: 1. Cooling the drill bit; 2. Lubricating the drill bit; 3. Flushing the sand from the drill bit at the bottom of the hole out of the hole; 4. Lubricating the drill pipe to reduce friction; 5. Maintaining a certain The water pressure prevents the hole wall from collapsing. [0003] Flow rate is a key variable in optimizing drilling efficiency. Fluid must effectively cool the drill bit, remove cuttings from the cutting face of the bit, and carry these cuttings up the pore to the surface. The flow rate should increase with the increase of the drilling rate, and the flow rate and load capacity depend on the viscosity of the flow liquid. Generally speaking, the cuttings should alwa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F04B49/20E21B21/08
CPCE21B21/08F04B49/20
Inventor 张斌腾飞蔡平基
Owner 四川诺克钻探机械有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products