Valve Particle Catcher Geometry for Magnetite Buildup
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Solution Overview
Problem
Existing fluid flow control systems, such as valves, face issues with magnetite buildup, which causes the valve plug to stick and requires frequent cleaning, especially in environments with high flow rates, as existing solutions like plug catchers are resource-intensive to manufacture and may not adequately restrict magnetite particles.
Innovation Solution
A one-piece particle catcher with an elongated body and angled passages that direct fluid flow to change direction by approximately 120°, combined with a retainer sweeper and diverter features, effectively captures magnetite particles within the valve system, reducing the risk of jamming and improving manufacturing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a three-piece plug catcher is installed to filter magnetite particles, then particle retention is improved, but manufacturing complexity and assembly time increase
Solution Approach 1:
The patent combines three separate components (drilled tube, first disk, second disk) into a single integrated particle catcher body with internal passages. This merging maintains the particle filtering function while eliminating the complexity of machining and assembling three separate pieces, directly resolving the contradiction between particle retention and manufacturing complexity.
2Object-generated harmful factors
If guiding tolerances are modified to reduce magnetite buildup, then particle accumulation is reduced, but valve precision and control are degraded
Solution Approach 1:
The patent extracts the particle retention function from the valve's guiding tolerances and creates a dedicated particle catcher component. This allows the valve to maintain tight guiding tolerances for precision control while the separate particle catcher handles magnetite removal, resolving the contradiction between reducing particle buildup and maintaining valve precision.
3Reliability
If existing plug catchers are used in high flow rate environments, then particle filtering is provided, but flow restriction occurs and particles are not adequately restricted
Solution Approach 1:
The patent designs internal passages that optimize fluid flow paths in three-dimensional space, allowing particles to be diverted into catching portions without creating significant flow resistance. The passages are configured to maintain adequate flow rates while effectively capturing particles, resolving the contradiction between particle filtering and flow rate performance.
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 efficiently retains magnetite particles within the valve system, reducing the need for frequent cleaning and minimizing manufacturing time and costs, while maintaining fluid flow efficiency even at high flow rates.
Implementation Method 1
The at least one particle catcher passage directs the fluid flow path downwardly into the particle catching portion
Implementation Method 2
the particle catcher has two approximately 90° turns (at points A and B in Fig. 1) to filter the magnetite from the fluid flow
Implementation Method 3
An outer surface of the particle catcher and an inner surface of the control element form a particle catching portion
Data Source
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AI summary
A fluid flow control device (100) includes a valve body (102) defining an inlet (104), an outlet (106), and a fluid flow path (108) extending therebetween, a valve seat ring (116) coupled to the body that defines an orifice through which the fluid flow path passes, a cage (120) coupled to the body that defines an interior bore (122), a control element (130) slidably disposed within the interior bore of the cage, and a particle catcher (140) at least partially disposed within an interior bore of the control element. The particle catcher includes a particle catcher body (142) that defines an inner flow path (144) and at least one particle catcher passage (148) through which the fluid flow path passes. An outer surface (142c) of the particle catcher and an inner surface of the control element form a particle catching portion (150). The at least one particle catcher passage directs the fluid flow path downwardly into the particle catching portion.