Axially Split Pump Sealing Structure for High-Pressure Joints
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Solution Overview
Problem
Axially split pumps face challenges in ensuring a reliable seal at connection points between cord-shaped sealing elements, particularly at high operating pressures, due to reduced contact areas where planar end surfaces meet curved surfaces, leading to potential leaks.
Innovation Solution
The design incorporates a connecting element with lateral recesses that allow cord-shaped sealing elements to run parallel, enhancing the contact surface area and eliminating T-shaped junctions, along with an optional elastic pretensioning element for improved sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cord-shaped sealing elements are used to seal the pump housing, then the sealing effectiveness is improved and material usage is reduced, but the contact area at connection points is reduced leading to potential leaks
Solution Approach 1:
The connecting element features a curved inner contour that follows the lateral surface of the cord-shaped sealing element. This curved geometry maximizes the contact surface area between the sealing element and the connecting element, eliminating the T-shaped junction problem where planar end surfaces would meet curved surfaces with reduced contact area. The curvature ensures continuous, reliable sealing even at high operating pressures.
2Reliability
If multiple cord-shaped sealing elements are used to seal different pressure chambers, then the sealing coverage is improved, but the complexity of ensuring reliable connection points increases
Solution Approach 1:
The connecting element merges multiple sealing grooves into a single integrated component. Instead of having separate sealing grooves that would create multiple T-shaped junctions between different cord-shaped sealing elements, the connecting element provides a unified structure with multiple lateral recesses that accommodate sealing elements in parallel arrangement, eliminating the complexity of ensuring reliable connections at multiple junction points.
Solution Approach 2:
The connecting element serves multiple functions simultaneously: it connects sealing grooves, provides lateral recesses for accommodating cord-shaped sealing elements, and ensures reliable sealing through its curved inner contour. This multi-functional design simplifies the overall sealing system while maintaining comprehensive sealing coverage across different pressure chambers.
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 configuration significantly improves the sealing effect at connection points, ensuring an extremely reliable seal even at high operating pressures, reducing leaks and maintaining effectiveness over time.
Implementation Method 1
the cord-shaped sealing element is elastically deformed in the sealing groove, thus ensuring reliable sealing
Implementation Method 2
an elastic pretensioning element for improved sealing
Data Source
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AI summary
An axially split pump for conveying a fluid is proposed, comprising an axially split housing (2) which includes a lower part (21) and a cover (22), wherein the lower part (21) has a first sealing surface (212) and the cover (22) has a second sealing surface (222), wherein the lower part (21) and the cover (22) can be fastened to one another such that the two sealing surfaces (212, 222) are in direct contact with each other, wherein a first sealing groove (213) for receiving a first cord-shaped sealing element (10) is provided in the sealing surfaces (212, 222), and a second sealing groove (214) for receiving a second cord-shaped sealing element (11) is provided, wherein the second sealing groove (214) is connected to the first sealing groove (213) by an opening (20), and wherein a connecting element (50) is provided in the opening (20), which has two lateral recesses (51) for receiving one of the cord-shaped sealing elements (10,11) each,wherein the recesses (51) are arranged and designed such that the two cord-shaped sealing elements (10, 11) can run substantially parallel in the area of the connecting element (50).