Bi-Directional Choke Gate Valve With Multi-Orifice Throttling
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Solution Overview
Problem
Existing choke valves in fluid handling systems suffer from wear, erosion, and degradation due to high pressure and abrasive media, leading to unreliable fluid flow control and increased maintenance needs.
Innovation Solution
A choke gate valve with a gate featuring multiple fixed-size orifices that can be selectively aligned with a fluid bore to throttle fluid flow, providing adjustable and repeatable control, enhanced wear resistance, and reduced erosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a control valve with a solid cylinder is used to partially occlude fluid flow, then linear variations in flow rate are achieved, but the solid cylinder is subject to high pressure drop environments and abrasive media that lead to wear and erosion
Solution Approach 1:
The gate is segmented into multiple discrete throttling orifices of different sizes instead of using a single solid cylinder. This segmentation allows selective alignment of specific orifices with the fluid bore to achieve desired flow rates, while the fixed geometry of each orifice resists wear and erosion from abrasive media.
Solution Approach 2:
Instead of using a solid cylinder that moves to create variable flow areas, the invention inverts the approach by using a gate with fixed orifices that are selectively positioned. The gate moves to align different fixed orifices with the bore, reversing the conventional approach of creating variable geometry through movement.
2Ease of operation
If a gate valve with a movable gate is used to throttle fluid flow, then the gate can be positioned to control flow rate, but the gate is subject to wear and erosion from high pressure and abrasive media
Solution Approach 1:
Multiple throttling orifices of different sizes are pre-formed in the gate during manufacturing. This preliminary action provides a set of predetermined flow control options, eliminating the need for wear-prone adjustable mechanisms while maintaining throttling capability through selective orifice alignment.
Solution Approach 2:
The invention changes the parameter of orifice geometry from variable (in conventional valves) to fixed with discrete options. By providing multiple fixed orifices with different sizes, the system achieves flow control through parameter selection rather than continuous adjustment, improving durability against wear and erosion.
3Adaptability or versatility
If multiple gates with different orifice configurations are used to provide different flow rates, then flow control flexibility is improved, but the device complexity increases
Solution Approach 1:
A single gate is designed to perform multiple functions by incorporating several throttling orifices of different sizes. This multi-functional gate can provide various flow rates by selectively aligning different orifices with the fluid bore, eliminating the need for multiple separate gates or complex adjustment mechanisms.
Data Source
AI summary
A choke gate valve includes a housing that defines a fluid bore and a gate with multiple throttling orifices. The gate is configured to move within the housing between a first throttle position in which the gate extends across the fluid bore to position a first throttling orifice of the multiple throttling orifices in the fluid bore to throttle a fluid flow through the fluid bore and a second throttle position in which the gate extends across the fluid bore to position a second throttling orifice of the multiple throttling orifices in the fluid bore to throttle the fluid flow through the fluid bore.