Valve Body With Flushing Attachments For Debris Clearance
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Solution Overview
Problem
Existing pipeline control valves face challenges in easily incorporating off-the-shelf mechanisms and materials, as they are pressurized and require complex fluid-tight seals, and struggle with debris clearance, which damages seating surfaces and limits the use of softer, corrosion-resistant materials.
Innovation Solution
A valve design featuring a housing with proximal and distal conduit portions, flanges, and closure rods that allow for fluid-tight engagement and easy installation of gate mechanisms, enabling transformation from a partial to a full valve operation while maintaining pressurization, and incorporating flushing attachments to clear debris without exposing actuator components to corrosive environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mother-valve completely encompasses and contains a repairable valve submerged in pipeline fluid, then the valve can operate under pressure, but complicated fluid-tight seals are required between the mother-valve and pipeline control mechanism
Solution Approach 1:
The patent extracts the gate mechanism from the pressurized environment by providing a gate access opening that allows the gate to be removed from the housing. This enables the gate to be serviced, replaced, or inspected without requiring complex seals between the valve body and external control mechanisms, as the gate can be accessed from the outside while the housing remains pressurized.
Solution Approach 2:
The valve is segmented into distinct components: a pressurized housing containing the seating surfaces, and an externally accessible gate mechanism. The gate access opening creates a separation between the pressurized internal environment and the external control mechanism, allowing independent servicing of each component without compromising the other.
2Reliability
If softer corrosion-resistant materials like PVC, HDPE and composites are used in the valve, then corrosion resistance is improved, but debris clearance becomes difficult as these materials cannot effectively clear debris from the gate seating area
Solution Approach 1:
The patent introduces a gate with a planing edge as an intermediary element between the debris and the seating surfaces. This planing edge is specifically designed to scrape and remove debris from the gate seating area during gate operation. The intermediary gate mechanism performs the debris clearance function that would be difficult for the housing material itself to achieve, while allowing the housing to be made from softer corrosion-resistant materials.
3Ease of operation
If the valve structure is designed to drain the hollow through-passage by opening a port, then debris can be cleared, but the structure does not easily clear debris from the gate seating area which interferes with fluid-tight engagement
Solution Approach 1:
The patent applies local quality by providing specific structural features at the gate seating area: a planing edge on the gate and a gate access opening. These localized features are designed specifically to address the debris clearance problem at the seating surfaces. The planing edge creates a scraping action precisely where debris accumulation would interfere with sealing, while the access opening allows external intervention if needed, without compromising the overall seating engagement reliability.
Data Source
AI summary
A valve body with conduits on opposing sides having attachable pressure cover-plates and valve servicing assemblies that can be selectively installed onto the valve body while it is fully pressurized. The valve body includes simple isolators that allow access openings to be blocked and exposed that allow various style operating mechanisms and tools without the need for intermediate isolating mechanisms. Attachable subcomponents can provide pressurized fluid that is injected into the valve body from an external power source to move sand and debris away from seating surfaces while advancing and retracting various style gates.