Rotary Guide Executing Mechanism Valve Core Segmentation
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Solution Overview
Problem
The existing rotary guide systems using pressure differences in drilling fluids face challenges in balancing response speed and power consumption, leading to inefficiencies in underground operations.
Innovation Solution
The executing mechanism for a rotary guide device incorporates a driven valve core and a high-pressure slurry driving channel, allowing for pressure adjustments between cavities to generate a driving force, reducing power consumption while increasing response speed through the linked cooperation of driving and driven valve cores.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a larger valve core is used to increase slurry flux, then the response speed of the pushing piston is improved, but the power consumption of the system increases
Solution Approach 1:
The valve core is divided into two separate components: a driving valve core and a driven valve core. The driving valve core (smaller size) controls pressure in the first cavity, while the driven valve core (larger size) controls the high-pressure slurry driving channel. This segmentation allows the smaller driving valve core to operate with lower power consumption while the larger driven valve core provides the necessary slurry flux for fast response speed.
Solution Approach 2:
The first cavity acts as an intermediary pressure chamber between the driving valve core and the driven valve core. High-pressure slurry is introduced into the first cavity, and the driving valve core modulates this pressure to create pressure differences that drive the driven valve core, thereby transmitting control action without requiring the driving valve core to directly handle the full slurry flux.
2Speed
If slurry flow is increased to increase response speed, then the response speed of the pushing piston is improved, but the power consumption of the system increases
Solution Approach 1:
The system utilizes hydraulic principles by introducing high-pressure slurry into the first cavity and using pressure differences to drive the driven valve core. The driven valve core is acted upon by pressure differences between the first cavity (containing high-pressure slurry) and the second cavity (containing low-pressure slurry), enabling efficient force transmission without requiring excessive slurry flow through the driving valve core.
3Device complexity
If a single valve core structure is used, then the device complexity is reduced, but the ability to independently optimize response speed and power consumption is limited
Solution Approach 1:
The single valve core is segmented into two functionally independent valve cores: the driving valve core for pressure control in the first cavity, and the driven valve core for controlling the high-pressure slurry driving channel. This segmentation enables independent optimization of each valve core's size and characteristics to simultaneously achieve fast response speed and low power consumption.
Solution Approach 2:
The two-valve-core structure serves multiple functions: the driving valve core provides precise pressure modulation, the driven valve core provides large slurry flux control, and together they achieve both fast response speed and low power consumption. This multi-functional design enhances the system's adaptability and optimization flexibility.
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
This solution effectively reduces power consumption while enhancing response speed and stability, allowing for flexible adjustments in output force and precision, thereby improving the efficiency and precision of the rotary guide system.
Implementation Method 1
the driven valve core moves in response to a pressure difference between the first cavity and the second cavity
Data Source
AI summary
An executing mechanism for a rotary guide device includes a driving valve core, a driven valve core, a first cavity, a second cavity and a high-pressure slurry driving channel. The first cavity includes a first low-pressure port communicating with a low-pressure slurry; and a first high-pressure port communicating with a high-pressure slurry. The driving valve core adjusts a pressure in the first cavity; and the driven valve core moves in response to a pressure difference between the first cavity and the second cavity. The high-pressure slurry driving channel switches between an open state and a close state in response to movement of the driven valve core. A rotary guide device includes a rotary main shaft, a drill bit, a push mechanism, and the executing mechanism. The push mechanism includes a push block and a push plunger piston, the high-pressure slurry driving channel communicates with one end, distal from the push block, of the push plunger piston.