Angle Check Valve Valve-Unit Access for Fast Seat Replacement
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Solution Overview
Problem
Angle type check valves face challenges in maintainability, particularly in replacing the valve body and valve seat without releasing piping connections, and existing solutions either require complex operations or are not suitable for applications like offshore foot valves.
Innovation Solution
An angle type check valve design featuring a valve unit that integrates the valve seat, valve body, and hinge mechanism, with a gripping member on the valve seat for easy access and replacement through an access hole, allowing for quick and efficient maintenance without disrupting piping connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the valve body and valve seat are made separable for maintenance, then maintainability is improved, but the structure becomes more complex and requires releasing piping connections
Solution Approach 1:
The valve is divided into a valve box (housing) and a valve unit (containing valve body, valve seat, and hinge mechanism) that can be independently replaced. The valve unit is designed as a separable module that can be removed from the valve box through an access hole without disturbing the piping connections, thus improving maintainability while keeping the overall structure relatively simple.
Solution Approach 2:
The valve unit is extracted as a removable component from the valve box. The valve body and valve seat are integrated into this extractable valve unit, which can be taken out through the access hole for maintenance or replacement without disassembling the piping system, thereby resolving the contradiction between ease of repair and structural complexity.
2Ease of repair
If the valve body is made detachable from the hinge shaft for replacement, then maintainability is improved, but the replacement operation becomes more difficult requiring complex release operations
Solution Approach 1:
The valve body, valve seat, and hinge mechanism are merged into a single integrated valve unit. This combination allows all these components to be replaced together as one module through the access hole, eliminating the need for complex operations to detach the valve body from the hinge shaft separately, thus improving both maintainability and ease of operation.
3Ease of repair
If the valve seat is made replaceable, then maintainability is improved, but the valve seat cannot be replaced without replacing the entire valve body in conventional designs
Solution Approach 1:
The valve system is segmented into a permanent valve box and a replaceable valve unit. The valve seat is integrated into the valve unit, which can be removed and replaced independently from the valve box. This segmentation allows the valve seat to be replaced quickly along with the valve body as a single unit without replacing the entire valve assembly, reducing replacement time and improving maintainability.
Data Source
AI summary
There is provided an angle type check valve which enables simple and quick replacement operations of a valve body and a valve seat without releasing a piping coupled state and has excellent maintainability. In the angle type check valve according to the present invention, as a valve unit, a valve seat, a valve body, and a hinge mechanism are integrally assembled so as to be made into a unit part. The valve unit is attachable to and detachable from a unit fitting portion in the valve box main body. A gripping member is provided on the valve seat. As a result, access to the valve unit attached to the unit fitting portion through the access hole becomes remarkably easier. Therefore, a maintenance operator can perform a fitting operation and a removal operation of the valve unit to and from the unit fitting portion quickly with high work efficiency.