Valve Head Cavity Structure for Lighter High-Power Pump Valves
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Solution Overview
Problem
High-power pumps, especially those used in hydraulic fracturing, face significant wear and failure due to harsh operating conditions and abrasive fluids, leading to high maintenance and replacement costs for valve members and seals.
Innovation Solution
A valve member design featuring a dome-shaped cavity within the valve head, which reduces the overall mass of the valve member while maintaining its strength and resistance to external forces, thereby enhancing economic efficiency in manufacturing and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the valve member uses a solid valve head design, then the strength and durability are maintained, but the mass is high leading to increased manufacturing and shipping costs
Solution Approach 1:
The valve head is segmented into solid and hollow regions through the cavity design, allowing the structure to maintain strength where needed while reducing mass in non-critical areas. The cavity creates distinct zones within the valve head that optimize the strength-to-weight ratio.
Solution Approach 2:
The cavity is strategically positioned within the valve head to create local variations in material distribution. This allows the valve head to have different structural properties in different regions - denser where strength is required and hollow where weight reduction is prioritized, achieving optimal strength-to-weight ratio.
2Ease of manufacture
If the valve member mass is reduced through material removal, then manufacturing and shipping costs decrease, but the strength and resistance to external forces may be compromised
Solution Approach 1:
The cavity is designed with a dome-shaped geometry rather than a simple cylindrical or rectangular form. This curved, spherical-like shape distributes stresses more evenly throughout the valve head structure, maintaining structural integrity while maximizing material removal for weight reduction and cost savings.
Solution Approach 2:
The cavity placement and shape are optimized to maintain local structural quality where strength is critical while removing material where it is less important. This selective material distribution achieves cost reduction without compromising overall valve head strength.
3Weight of moving object
If a dome-shaped cavity is introduced to reduce mass, then the strength-to-weight ratio improves, but the structural complexity increases
Solution Approach 1:
The dome-shaped cavity provides a smooth, continuous curved surface that is actually simpler to manufacture using standard casting or forging processes than angular or irregular shapes. The spherical geometry naturally distributes stresses and simplifies tooling requirements, reducing manufacturing complexity despite the non-standard appearance.
Solution Approach 2:
The cavity design optimizes parameters such as depth, diameter, and curvature radius to achieve the desired weight reduction while maintaining manufacturability. By carefully selecting these geometric parameters, the design achieves mass reduction without creating excessively complex structural features that would increase manufacturing difficulty.
Data Source
AI summary
A valve member, and related assemblies, systems, and methods, for a high-power pump may include a valve body having a valve head. The valve head may have a seal engaging surface positioned to receive a valve seal. The seal engaging surface may have a first axial position relative to a valve body axis. The valve head further may have a cavity at least partially defining a cavity interior. The cavity interior may extend between a cavity opening and a cavity end. The cavity interior may extend from the cavity opening at a second axial position spaced from the first axial position of the seal engaging surface and at least partially through the first axial position to the cavity end at a third axial position, thereby to reduce mass of the valve member and substantially maintain the strength of the valve head.