Working Diaphragm Stabilization for High-Pressure Pumping
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Solution Overview
Problem
Elastomer-based working diaphragms in pumping units are limited to low pressure ranges and have a short service life due to high mechanical stress and pressure-induced deformation, affecting delivery volume and flow rate.
Innovation Solution
The use of a support element, such as a disc-shaped or tulip-shaped support element, to stabilize the elastic deformation area of the working diaphragm, combined with metal inserts, fibers, or fabric inserts for reinforcement, which prevents balloon-like deformation and extends the service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If elastomer-based working diaphragms are used in pumping units, then they can enable oscillating vacuum generation and pressure generation for delivery volume, but they are limited to low pressure ranges of up to approx. 6 bar and have a short service life
Solution Approach 1:
The patent applies composite materials by combining elastomer material with reinforcement elements (metal inserts, fibers, or fabric inserts) to create a working diaphragm that maintains elasticity while gaining enhanced strength and pressure resistance, enabling operation at pressures above 6 bar with extended service life
Solution Approach 2:
The patent applies local quality by placing reinforcement elements specifically in the elastic deformation area of the working diaphragm where mechanical stress is highest, rather than uniformly strengthening the entire diaphragm, thus maintaining flexibility where needed while providing localized strength enhancement
2Ease of operation
If elastomer-based working diaphragms are used, then they can deform elastically for conveying movement, but they bulge like a balloon when there are pressure differences, causing delivery volume to depend on pressure
Solution Approach 1:
The patent applies local quality by placing reinforcement elements specifically in the elastic deformation area of the working diaphragm where mechanical stress is highest, rather than uniformly strengthening the entire diaphragm, thus maintaining flexibility where needed while providing localized strength enhancement
Solution Approach 2:
The patent applies composite materials by combining elastomer material with reinforcement elements (metal inserts, fibers, or fabric inserts) to create a working diaphragm that maintains elasticity while gaining enhanced strength and pressure resistance, enabling operation at pressures above 6 bar with extended service life
3Reliability
If additional reinforcement elements are added to stabilize the working diaphragm, then service life is extended and pressure resistance is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by placing reinforcement elements specifically in the elastic deformation area of the working diaphragm where mechanical stress is highest, rather than uniformly strengthening the entire diaphragm, thus maintaining flexibility where needed while providing localized strength enhancement
Solution Approach 2:
The patent applies local quality by placing reinforcement elements specifically in the elastic deformation area of the working diaphragm where mechanical stress is highest, rather than uniformly strengthening the entire diaphragm, thus maintaining flexibility where needed while providing localized strength enhancement
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
Enables operation at pressures greater than 6 bar with a stable and temperature-independent delivery volume, reducing the dependency on pressure and temperature, and extending the service life of the diaphragm.
Implementation Method 1
the elastic, moving, i.e. the deflectable area of the working diaphragm is subjected to a prestress by placing additional elements underneath
Implementation Method 2
the elastic, moving, i.e. the deflectable area of the working diaphragm is subjected to a prestress by placing additional elements underneath
Implementation Method 3
the working membrane proposed according to the invention and supported by a support element has a swelling space. This swelling space is provided between a sealing bead and a separating rib and allows the elastomer material to swell when the temperature rises and media is absorbed
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a working diaphragm (14) for the volumetric conveying of a fluid. In the installed state (28), the working diaphragm (14) is received between components (30, 38). The working diaphragm (14) is connected to an actuator (10, 12) for carrying out conveying strokes. The working diaphragm (14) is stabilized by a supporting element (18, 54) in the elastic region (26).