Drilling tool connection sleeve and triple jet grouting drilling tool

By setting the inner channel of the triple rotary drill tool as a water channel, the intermediate channel as a mud channel, and the connection sleeve realizes the confluence of the inner and outer channels, the existing triple rotary drill tool is solved due to the intermediate channel with the largest water pressure. The problems of large volume, heavy weight and high cost achieve the goal of achieving ultra-high pressure in small pipe diameter, reducing the overall cost and difficulty in disassembly and assembly.

CN113250620BActive Publication Date: 2024-12-31WUXI ANMAN CONSTR MASCH CO LTD
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Patent Information

Application Number
CN202110692077.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-06-22
Publication Date
2024-12-31
Estimated Expiration
2041-06-22

AI Technical Summary

Technical Problem

Due to the intermediate channel with the largest water pressure, the inner core tube and the middle core tube have a large wall thickness, and the overall pipe diameter and wall thickness increase, resulting in large drilling accumulation, heavy weight, high disassembly and assembly. high.

Method used

Set the inner channel of the innermost layer as a water channel and the middle channel as a mud channel. The inner channel and the outer channel are merged through the connecting sleeve, reducing the wall thickness and pipe diameter requirements of each core tube, and adopting the innermost pipe diameter to further increase The small upper inner tube bears the highest pressure, achieving the purpose of small pipe diameter to achieve ultra-high pressure, reducing the overall volume and weight, making it easier to disassemble and assembly and reduce costs.

Benefits of technology

It realizes that the specific drilling accumulation and weight is reduced while meeting the high pressure requirements, and the difficulty and cost of disassembly and assembly are reduced. The overall cost of the drilling tool is reduced through the design of smaller diameter and wall thickness of each core tube.

✦ Generated by Eureka AI based on patent content.
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Abstract

The present invention discloses a drilling tool connecting sleeve and a triple rotary jet drilling tool. An air channel, a slurry channel and a water channel are axially provided on the connecting sleeve. The water channel is located in the center of the connecting sleeve and is connected to the mounting hole. The air channel and the slurry channel are located outside the water channel. The present invention sets the innermost inner channel as the water transmission channel with the highest pressure, sets the middle channel as the mud transmission channel with the second highest pressure, and sets the outermost outer channel as the air transmission channel with the lowest pressure. The pressure of each channel decreases from the inside to the outside. The upper inner tube with the smallest diameter bears the greatest pressure. When the pressure-bearing conditions are met, the wall thickness of the upper inner tube can be set smaller accordingly, so as to achieve the purpose of ultra-high pressure with a small diameter. The overall volume of the drilling tool is smaller, the weight is lighter, the difficulty of disassembly and assembly is reduced, and the disassembly and assembly cost is reduced. Moreover, the smaller the diameter and wall thickness of each core tube, the lower the cost, thereby reducing the cost of the drilling tool.
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