Modular Hydraulic Drilling Hammer with Inline Poppet Valves
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Solution Overview
Problem
Traditional hydraulic 'down-the-hole' percussion drilling systems face inefficiencies and reliability issues due to energy loss, complex hose management, and high operational costs, particularly in oil-powered systems, which suffer from hose damage and oil loss during rod coupling and uncoupling.
Innovation Solution
A modular, hydraulically powered drilling apparatus with a piston, shuttle valve, accumulator, and poppet valve configuration that minimizes hydraulic fluid loss through inline modular components and replaceable connection valves, allowing efficient energy transmission and reduced oil loss during operation and rod connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If external hydraulic hoses are used to supply oil to the hammer, then the hammer can be powered hydraulically, but the hoses are prone to damage and oil loss during rod coupling and uncoupling
Solution Approach 1:
The hydraulic system is segmented into modular components with integrated valves. Each drill rod and hammer assembly contains self-contained poppet valves that manage hydraulic connections locally, eliminating the need for long external hoses and reducing points of failure.
Solution Approach 2:
The poppet valves are nested within the drill rod and hammer structures themselves, with the valves being integral parts of the rod interfaces and hammer body. This nesting eliminates external hoses by embedding the hydraulic control functionality within the structural components.
2Power
If external hydraulic hoses are used, then hydraulic power can be transmitted, but operational efficiency is reduced due to hose reattachment complications
Solution Approach 1:
The poppet valves are designed to automatically engage and disengage during rod coupling and uncoupling operations. The valve mechanism self-regulates hydraulic flow based on connection status, eliminating manual hose reattachment tasks and maintaining continuous operational efficiency.
3Stability of the object's composition
If a one-piece hammer design is used, then structural integrity is maintained, but manufacturing cost and replacement expense increase
Solution Approach 1:
The hammer is divided into modular segments with standardized interfaces. The piston assembly, hammer body, and drill rod connections are separate replaceable units, allowing individual components to be manufactured and replaced independently, reducing overall manufacturing and replacement costs while maintaining structural integrity through precise interface design.
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 solution enhances drilling efficiency and reliability by minimizing oil loss, reducing operational costs, and enabling faster drilling with improved mechanical efficiency and reduced maintenance needs, while maintaining a low profile for use in confined spaces.
Implementation Method 1
the hydraulic accumulator, used to accommodate the varying flow requirements during a cycle of piston extension and retraction
Implementation Method 2
the hammer connection valve, first connection valve and second connection valve comprise at least one poppet valve positioned proximate to a corresponding valve seat
Data Source
AI summary
A drilling apparatus including a hydraulically powered hammer having a piston to impact a drill bit; a shuttle valve to control reciprocation of the piston; and an accumulator for hydraulic fluid; at least one drill rod having a first connection valve for connection of the drill rod to the connection valve of the hammer; and a second connection valve for connection of the drill rod to the first connection valve of a like drill rod or to a rotation device. The piston and shuttle valve are positioned substantially in-line to the axis of movement of the hammer. The accumulator is positioned proximate to the shuttle valve; and the first connection valve, and second connection valve having at least one poppet valve positioned proximate to a corresponding valve seat.