Removable Seat Pocket Insert for Lower-Cost Valve Block Repair
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Solution Overview
Problem
Conventional valve blocks in the oil and gas industry face increased manufacturing and repair costs due to machined seat pockets, which lead to longer downtime and reduced versatility, as the seat pockets wear out from fluid flow, necessitating complex and costly repairs.
Innovation Solution
A seat pocket insert is used, which extends between end surfaces and includes a bore for sealing engagement with the valve seat, allowing for easy installation and replacement, reducing the need for machining and minimizing erosion, and can be coupled to the valve block using threads or mechanical couplers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If seat pockets are machined into the valve block, then the seat can be securely held in place, but manufacturing and repair costs increase and downtime increases
Solution Approach 1:
The seat pocket is segmented from the valve block by providing it as a separate, removable component. This allows the seat pocket to be independently manufactured, inspected, and replaced without affecting the valve block itself, thereby reducing manufacturing complexity and repair costs while maintaining secure seat holding.
Solution Approach 2:
The seat pocket is extracted from the valve block structure and provided as a separate insert component. This extraction allows the seat pocket to be manufactured separately with optimized processes, reduces the complexity of valve block machining, and enables quick replacement of worn seat pockets without repairing the entire valve block.
2Reliability
If seat pockets are machined into the valve block, then the seat can be securely held in place, but repair time and versatility are reduced
Solution Approach 1:
By segmenting the seat pocket from the valve block, the repair process is simplified to only replacing the worn seat pocket insert rather than repairing the entire valve block. This modular approach significantly reduces repair time and allows for quicker restoration of valve functionality.
Solution Approach 2:
The seat pocket is designed as a consumable component that can be easily discarded when worn and replaced with a new or refurbished unit. This approach eliminates the need for complex repair operations on the valve block and enables rapid recovery of system operation.
3Reliability
If seat pockets are machined into the valve block, then the seat can be securely held in place, but versatility of repairs is reduced
Solution Approach 1:
The segmented seat pocket design allows for multiple repair strategies including replacement with new inserts, refurbishment of removed inserts, or use of different material compositions for the seat pockets. This provides versatility in repair approaches while maintaining secure seat holding through the dedicated seat pocket geometry.
Solution Approach 2:
The standardized seat pocket insert design can serve multiple functions and be used across different valve configurations. The same insert type can be refurbished, reused, or replaced depending on the specific repair needs, providing versatility in repair options while maintaining consistent seat holding 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
This solution reduces manufacturing and repair costs, minimizes downtime, and enhances versatility by allowing easy swapping of worn parts, while maintaining a fluid-tight seal without the need for complex welding operations.
Implementation Method 1
a first seat may be sealingly engaged in a flow bore of a valve block by a pressure from a valve
Data Source
AI summary
A seat pocket insert for a valve block may include an insert body extending, in an axial length, between a first end surface and a second end surface. Additionally, the second end surface may have a profile configured to sealingly engage with a seat of a valve. Further, a bore may be provided axially extending through the first end surface to the second end surface of the insert body.