Replaceable Face Seal Assembly for High-Pressure Separation Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Chromatography columns require expensive replacement when sealing components fail due to damage or wear, as existing sealing systems are not easily replaceable and can lead to leaks, sample carryover, and sample dispersion under high pressures.
Innovation Solution
The integration of a face seal with an end nut in separation devices, which is axially alignable with the inlet and outlet sides, allowing for easy installation and replacement, and made from materials like polymeric materials, PEEK, or stainless steel to enhance fluidic sealing and prevent leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If threaded fittings with cone-shaped sealing surfaces are used, then the separation device can be assembled and disassembled, but the sealing surfaces may be marred, scored, or scratched during installation or removal, leading to leaks and requiring replacement of the entire separation device
Solution Approach 1:
The sealing system is divided into separate components: a reusable face seal element and the end nut assembly. The face seal element can be independently replaced without damaging the end nut or column, allowing the sealing surface to be renewed while preserving the main separation device structure.
Solution Approach 2:
The face seal element is designed as a consumable component that can be replaced when worn or damaged. This disposable approach allows the expensive column and end nut to be preserved while replacing only the lower-cost sealing element, maintaining sealing integrity over multiple uses.
2Reliability
If the entire separation device is replaced when sealing components fail, then sealing reliability is restored, but the cost increases and waste is generated
Solution Approach 1:
The sealing system is segmented into replaceable face seal elements and permanent end nut assemblies. This allows only the worn sealing element to be replaced while preserving the main device structure, reducing waste and replacement costs while restoring sealing reliability.
Solution Approach 2:
The face seal element is designed to be discarded when worn, while the valuable end nut and column structure are recovered and reused. This selective replacement approach maintains sealing reliability without requiring disposal of the entire separation device.
3Ease of manufacture
If threaded fittings are used for connection, then the separation device can be assembled, but the threaded fitting or sealing component failure requires replacement of the entire separation device
Solution Approach 1:
The sealing system is segmented into independently replaceable face seal elements and permanent end nuts. This segmentation enables easy repair by replacing only the sealing element without affecting the threaded connection or requiring replacement of the entire separation device.
Solution Approach 2:
The face seal element is extracted as a separate, removable component from the end nut assembly. This extraction allows the sealing element to be independently replaced while preserving the threaded fitting and end nut structure, simplifying repair procedures.
Data Source
AI summary
Described are apparatuses, devices, and systems implementing seals for separation devices. An apparatus for a separation device may include an end nut shaped to be positioned on one of an inlet side and an outlet side of the separation device. The end nut may be further shaped to mate with a connecting fitting. The apparatus may further include a face seal having a device side and a fitting side. The face seal may be positioned, at least in part, in the end nut on the device side of the face seal. The face seal may be positioned to interface with the connecting fitting on the fitting side of the face seal upon the end nut being mated with the connecting fitting. The apparatus may also include a face seal bore of the face seal being axially alignable with at least one of an inlet and an outlet of the separation device.