Inline Valve End Cap Assembly for In-Place Repair
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Solution Overview
Problem
Existing inline valves integrated with fluid conduits require laborious and costly procedures for repair and replacement, often necessitating complete removal and reconnection, which involves specialized tools and additional welding operations.
Innovation Solution
The development of inline repairable valves that allow for repair and replacement of internal components without full disassembly from the fluid conduit, utilizing a design with releasable fasteners and a seal end cap that can be detached orthogonal to the central axis, enabling access to internal parts for maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inline valves are permanently coupled to fluid conduit by welding, then connection strength and reliability are improved, but repairability and ease of maintenance deteriorate
Solution Approach 1:
The valve assembly is segmented into distinct components: a body that remains permanently welded to the fluid conduit, and a removable end cap assembly that can be detached for maintenance. This segmentation allows the permanent connection to be maintained while enabling easy access to internal valve components for repair.
Solution Approach 2:
The end cap assembly is extracted as a separate removable component from the valve body. This extraction allows maintenance personnel to remove the end cap and access internal valve components without disturbing the permanent welded connection between the valve body and fluid conduit, thus enabling repair while maintaining connection reliability.
2Strength
If inline valves are permanently coupled to fluid conduit by welding, then connection strength is improved, but maintenance cost and downtime increase
Solution Approach 1:
The valve is divided into a permanently welded body and a removable end cap assembly. This segmentation enables maintenance personnel to service the valve by only removing the end cap assembly, significantly reducing maintenance downtime while preserving the strong welded connection of the valve body to the conduit.
Solution Approach 2:
The valve design preliminarily prepares for maintenance by providing pre-configured access points and removable components. The end cap assembly is designed to be quickly removed without requiring cutting or breaking the permanent welded connection, thereby reducing maintenance time and costs while maintaining connection strength.
3Ease of repair
If inline valves are releasably coupled to fluid conduit, then ease of repair is improved, but connection strength and reliability deteriorate
Solution Approach 1:
The valve assembly is segmented into two parts with different coupling methods: the valve body is permanently welded to the fluid conduit for strong, reliable connection, while the end cap assembly uses releasable fasteners for easy maintenance access. This segmentation allows both strong connection and easy repair to be achieved in different parts of the same assembly.
Solution Approach 2:
Different parts of the valve assembly have different coupling qualities: the valve body-to-conduit interface uses permanent welding for strength and reliability, while the end cap-to-body interface uses releasable fasteners for ease of repair. This local differentiation of connection quality allows both contradictory requirements to be satisfied in their respective locations.
Data Source
AI summary
A valve includes a body having a first end, a second end opposite the first end, and a throughbore extending from the first end to the second end along a central axis, a valve element positioned within the throughbore for selectably isolating fluid flow through the throughbore, a seal end cap including a flange and a neck, wherein the neck is inserted into the throughbore from the second end of the body to engage with the valve element, and a hub end cap including a mounting flange engaged with the flange of the seal end cap, wherein the flange of the seal end cap is engaged with the second end of the body whereby the flange of the seal end cap is compressed between the second end of the body and the mounting flange of seal end cap.