Rolling and Sliding Adaptive Device for Drill Pipe Centering
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Solution Overview
Problem
The assembly of long and large drill pipe systems in deep drilling operations is complex due to the need for precise vertical centering, which is difficult to achieve with existing technologies, especially in the context of deep energy resource exploration in China where energy resources are buried at great depths, necessitating a solution for accurate and stable support and fixation.
Innovation Solution
A rolling and sliding adaptive device with a mounting platform and telescopic drive mechanisms that form a funnel-shaped structure around the drill pipe, using rolling shafts and contact elements to ensure accurate alignment and support, preventing damage during assembly and providing stable fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional vertical centering assembly methods are used for long and large drill pipe systems, then the assembly process becomes complex and difficult to operate, but the positioning precision and stability are insufficient
Solution Approach 1:
The support mechanism employs dynamic telescopic arms that can extend and retract, and rolling elements that adapt their position automatically. This dynamic structure allows the system to adjust to different drill pipe dimensions and positions, achieving precise vertical centering without complex manual assembly procedures. The telescopic drive mechanism enables continuous adjustment of the support radius, providing adaptability while maintaining operational simplicity.
Solution Approach 2:
The centering assembly is divided into multiple independent support mechanisms, each with its own telescopic arm and rolling elements. This segmentation allows each module to function independently and be adjusted separately, simplifying the overall assembly process while maintaining high positioning precision through coordinated operation of multiple segments.
2Adaptability or versatility
If fixed support structures are used for drill pipe assembly, then the structure is simple, but the adaptability to different drill pipe sizes and the even distribution of support forces are poor
Solution Approach 1:
The support mechanism uses telescopic arms with adjustable lengths and rolling elements that can move along the drill pipe surface. This dynamic configuration enables the system to adapt to various drill pipe diameters and lengths. The telescopic drive mechanism allows continuous adjustment of the support radius, providing versatility without requiring multiple fixed structures for different pipe sizes.
Solution Approach 2:
The system changes key geometric parameters (support radius, arm length, rolling element position) to adapt to different drill pipe specifications. By varying these parameters through the telescopic mechanism, the system maintains optimal contact and force distribution across different pipe sizes, achieving high adaptability while keeping the basic structure relatively simple.
3Ease of operation
If manual centering methods are used for long drill pipes, then the equipment is simple, but the operation difficulty increases and assembly accuracy decreases
Solution Approach 1:
The rolling elements automatically adjust their position along the telescopic arms as the drill pipe is inserted, achieving self-centering through the mechanical interaction between the rolling elements and the pipe surface. This self-service mechanism eliminates the need for complex manual alignment operations while ensuring high assembly accuracy through the inherent geometric constraints of the rolling contact.
Solution Approach 2:
The system replaces manual mechanical centering operations with an automated telescopic support mechanism driven by rolling elements. Instead of requiring operators to manually position and align multiple support points, the telescopic drive mechanism automatically adjusts the support structure, significantly reducing operation difficulty while maintaining or improving assembly accuracy.
4Reliability
If conventional fixation methods are used for deep drilling equipment, then the design is straightforward, but the stability and even distribution of fixation forces are insufficient
Solution Approach 1:
The fixation mechanism employs dynamic telescopic arms that can adjust their position and angle to match the drill pipe configuration. This dynamic adjustment capability ensures even distribution of fixation forces along the pipe length, improving stability without requiring an overly complex fixed structure. The rolling elements provide continuous contact and force distribution.
Solution Approach 2:
The telescopic support mechanism serves multiple functions: it provides vertical centering, lateral support, and fixation simultaneously. This multi-functionality achieves high fixation stability without adding separate complex fixation devices, as the same telescopic structure performs all three functions through coordinated operation of its components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device enables accurate positioning and stable support of multi-section drill pipes, ensuring precise assembly and operation of the coring system by guiding the drill pipe into a funnel-shaped structure, avoiding damage and ensuring even support and fixation forces.
Implementation Method 1
Multiple rolling shafts are evenly arranged between the two mounting plates. The multiple rolling shafts are vertically arranged, and two ends of each of the rolling shafts are rotationally arranged between the two mounting plates
Implementation Method 2
A telescopic drive mechanism is provided between the contact element and the support seat
Implementation Method 3
The upper drive mechanism includes an upper guide-rod fixing plate hinged to the upper ends of the two mounting plates
Data Source
AI summary
A rolling and sliding adaptive device for guiding and fixing a drill pipe includes a mounting platform, where the mounting platform is provided with a through hole for the drill pipe to pass through. Multiple rolling and sliding support mechanisms are arranged around the through hole. The rolling and sliding support mechanisms each include a support seat. The support seat is provided with a contact element telescopic and swingable on the support seat. A telescopic drive mechanism is provided between the contact element and the support seat. The contact elements on the multiple rolling and sliding support mechanisms form a funnel-shaped structure with a large upper part and a small lower part around the through hole. The rolling and sliding adaptive device is used on a deep in-situ high-fidelity coring calibration platform for accurate positioning of an assembly process of a multi-section drill pipe bin.