Explosion Protection Valve Sealing Ring Pocket for Flow and Wear
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Solution Overview
Problem
Existing explosion protection valves face challenges in achieving optimal sealing and flow efficiency due to the design of sealing rings, which can lead to wear and impedance of medium flow, particularly with teardrop-shaped and rectangular cross-section sealing rings.
Innovation Solution
The sealing ring is held in an open receiving pocket on the inner side of the housing, with a flat-rectangular anchoring portion and a hollow chamber profile, allowing for a stable bearing arrangement and seamless transition, reducing wear and maintaining flow efficiency by avoiding radial narrowing and internal corners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing ring of teardrop-shaped cross-section is used, then the sealing effect is improved, but the flow cross-section is impeded and flow efficiency deteriorates
Solution Approach 1:
The sealing ring is segmented into two distinct functional zones: a first region with a rounded cross-section for optimal sealing contact with the closing body, and a second region with a flat cross-section for maintaining unimpeded flow. This segmentation allows each zone to perform its specific function without compromising the other, resolving the contradiction between sealing effectiveness and flow efficiency.
2Ease of manufacture
If a sealing ring of rectangular cross-section is used, then the manufacturing is simplified, but the sealing edge is subject to wear and sealing effect deteriorates
Solution Approach 1:
The sealing ring exhibits local quality variation along its circumference: the first region features a rounded cross-section specifically at the sealing contact point to distribute pressure and reduce wear, while the second region maintains a flat cross-section for flow efficiency. This localized differentiation ensures optimal sealing performance at the contact zone without compromising overall manufacturing simplicity.
3Reliability
If the sealing ring is bonded into a recessed seat, then the sealing effect is improved, but the assembly complexity increases and maintenance becomes difficult
Solution Approach 1:
The sealing ring is extracted from the complex bonded recessed seat configuration and repositioned to sit in a simple recess on the inner side of the housing. This extraction eliminates the need for bonding operations and complex assembly procedures, while the recess provides sufficient support for the sealing ring to maintain its sealing function against the closing body.
4Reliability
If the sealing ring protrudes into the flow cross-section, then the sealing contact is improved, but the flow efficiency deteriorates
Solution Approach 1:
The sealing ring is divided into two functional regions along its axial length: the first region protrudes into the flow cross-section with a rounded profile to ensure optimal sealing contact with the closing body, while the second region extends parallel to the housing inner side with a flat profile that does not impede flow. This segmentation allows the sealing function and flow efficiency to be spatially separated within the same component.
Data Source
AI summary
An explosion protection valve for decoupling system parts or workpieces for the installation in a pipeline, comprisinga housing,a closing body which is axially guided inside the housing on a guide rod and can be shifted from a defined open position into a sealing closed position in the event of a pressure or suction wave in the pipeline in at least one closing movement direction,a spring assembly, which is in operative connection to the closing body, on the guide rod for holding the closing body in the open position,a sealing ring on the inner side of the housing, against which the closing body can be pressed in its closed position, anda receiving pocket, which is applied to the inner side of the housing and is preferably open counter to the closing movement direction (SB) of the closing body, for holding the sealing ring.