Multistage Pump Pressure Chamber Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Multistage high-pressure pumps face challenges with increasing pressure demands, leading to larger and more costly outer housings, component deformations, and wear due to reduced gaps between components, necessitating a more efficient design.
Innovation Solution
The pump design features an outer housing with a separating element between two part pumps, creating two pressure chambers that maintain a lower pressure level within the housing, allowing for smaller dimensions and reduced material usage, with sealing elements and a groove or O-ring arrangement to form a single high-pressure region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the pressure in the outer housing is increased to meet high-pressure pump demands, then the pump performance is improved, but the outer housing dimensions and wall thickness must be increased, leading to higher costs
Solution Approach 1:
The pressure chamber is divided into a radial portion and an axial portion by a seal. The radial portion is connected to the first pump output at half high pressure, while the axial portion extends along the outer housing at high pressure. This segmentation allows the outer housing to withstand lower pressure in most areas, reducing required dimensions and wall thickness while maintaining high-pressure pump performance.
2Power
If the pressure in the outer housing is increased, then the pump output pressure is improved, but component deformations occur and gaps between components are reduced, causing wear
Solution Approach 1:
Different regions of the pressure chamber are assigned different pressure levels: the radial portion operates at half high pressure while the axial portion operates at high pressure. This local quality approach ensures that high pressure is only present where necessary for pump output, while other components operate in lower pressure environments, preventing deformations and reducing wear.
3Stress or pressure
If the outer housing is designed larger to accommodate high pressure, then the pump can handle higher pressure demands, but the material usage and manufacturing costs increase
Solution Approach 1:
The pressure chamber is segmented into radial and axial portions with different pressure levels. This allows the outer housing to be designed for lower pressure in the radial region, reducing material usage and weight, while the axial portion maintains high pressure capability for pump performance.
Solution Approach 2:
The pressure parameter is changed spatially within the pressure chamber, creating regions of different pressure levels. This parameter change allows the outer housing to be optimized for lower pressure, reducing material requirements while maintaining high-pressure functionality where needed.
Data Source
AI summary
A pump including an outer housing having an outlet chamber with an outlet connector, and including a first part pump and a second part pump connected thereafter, with the first and second part pumps being arranged in the outer housing, a separating element which can be arranged between the first and second part pumps and a rotor shaft which is rotatably arranged in the first and second part pumps. In accordance with the invention, the outer housing, the first part pump and the separating element bound a first pressure chamber and the outer housing, the second part pump and the separating element bound a second pressure chamber and the first and second pressure chambers are designed and arranged such that the outlet chamber is formed as a single high-pressure region of the pump.