Spring-Loaded Valve Seat Isolation for Leak-Tight Sealing
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Solution Overview
Problem
Large valves with flanges connected via screws or attachment elements often deform, leading to increased leakage when closed due to tightening torque, which compromises the sealing effect, especially in applications where fluid properties are hazardous to the environment.
Innovation Solution
A valve design incorporating a spring element that displaces the valve seat against its force, allowing the valve disk to compress and deform the spring, ensuring a tight contact between the valve disk and seat, with an end stop to manage the force and prevent excessive deformation, and a flange design that decouples from the valve seat to prevent deformation transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the flange is fixed to another component by multiple screws or attachment elements, then the flange can be securely mounted, but the tightening torque causes deformation of the flange which is transferred to the valve seat, increasing leakage
Solution Approach 1:
The valve body is divided into two functionally independent parts: a flange for mounting and a valve seat for sealing. The flange can be rigidly fixed to components while the valve seat remains isolated from mounting-induced deformations, allowing each part to perform its function without interference from the other
Solution Approach 2:
The valve body acts as an intermediary element that decouples the flange from the valve seat. It absorbs and isolates the deformations generated during flange mounting, preventing these deformations from being transferred to the valve seat and compromising the seal between the valve disk and valve seat
2Device complexity
If the valve seat is directly connected to the valve by weld seam or casting, then the structure is simplified, but the flange deformation is directly transferred to the valve seat, causing increased leakage
Solution Approach 1:
The valve body is segmented into a flange portion and a valve seat portion that are functionally decoupled. This segmentation allows the valve seat to be protected from flange deformations while maintaining a relatively simple integrated structure for manufacturing purposes
3Ease of operation
If the valve disk is brought from the second position into the first position, then the valve closes, but deformation of the valve seat prevents tight contact, increasing fluid leakage
Solution Approach 1:
The valve disk is designed as an elastic element that can deform to compensate for imperfections in the valve seat. This elastic valve disk ensures reliable sealing even when the valve seat experiences some deformation, maintaining the seal integrity without requiring perfect rigidity
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
The solution enhances the sealing effect by maintaining a tight contact between the valve disk and seat, reducing leakage, and preventing deformation of the valve seat from flange attachment, thus improving the valve's operational integrity and environmental safety.
Implementation Method 1
the spring element can store and release potential energy in dependence on the displacement of the valve seat
Implementation Method 2
the spring element, which can be designed, for example, in the form of a bellows or in the form of a coil spring
Data Source
AI summary
A valve with a valve seat and a valve disk has the valve disk configured such that it can be brought into a first position in which it is in contact with the valve seat where the valve is closed, and can be brought into a second position in which the valve is open. The valve has at least one spring element, and the valve seat can be displaced against a force exerted by the at least one spring element by bringing the valve disk from the second position into the first position and thereby deforming the spring element.