Modular Screw Displacement Pump for Multi-Phase Well Boosting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing screw displacement pumps are complex, costly, and inefficient for single-well boosting due to high wear and unpredictable multi-phase mixtures, leading to premature pump failure and abandonment of valuable oil wells.
Innovation Solution
A modular single-entry, double-shaft screw displacement pump design with a separable pump housing and external bearing, allowing for easy replacement and maintenance, along with internal separation devices for multi-phase mixtures, which decouples pressure deformations and maintains precise screw shaft alignment, reducing wear and enhancing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a double-shaft, double-entry screw pump is used, then the pump can handle large pump performances, but the device complexity and production cost increase significantly
Solution Approach 1:
The pump is divided into a stationary pressure housing and a removable pump housing containing the screw shafts and bearing. This segmentation allows the pump to handle large performances while reducing the complexity of assembly and maintenance, as components can be serviced independently without replacing the entire system.
2Stability of the object's composition
If the pump housing is rigidly connected to the pressure housing, then structural stability is improved, but pressure-induced deformations affect screw shaft alignment and increase wear
Solution Approach 1:
The pump housing is extracted as a separate, removable component from the pressure housing. This allows the pump housing to be mechanically decoupled from pressure-induced deformations, maintaining screw shaft alignment precision while still providing structural stability during operation.
3Strength
If the pump is designed as a complete assembly, then structural integrity is maintained, but servicing time and cost increase significantly
Solution Approach 1:
The pump assembly is segmented into a permanent pressure housing and a removable pump housing containing the wear-prone screw shafts and bearing. This segmentation maintains structural integrity of the pressure-containing components while enabling quick servicing by simply removing and replacing the pump housing assembly.
4Productivity
If sealing gaps are made very small to increase efficiency, then pump efficiency improves, but the tolerance requirements and manufacturing precision demands increase
Solution Approach 1:
The pump housing is extracted as a separate component that can be precisely manufactured and fitted into the pressure housing. This allows for tight sealing gaps to be achieved through precise manufacturing of the pump housing mating surfaces, while the pressure housing can be optimized for strength without the same precision requirements.
Data Source
AI summary
A screw displacement pump is provided. The screw displacement pump is of single-entry, double-shaft construction with an external bearing of the two screw shafts. A pump housing encloses the screw shafts by forming feed chambers and externally delimiting the feed chambers with its internal shell surface, as well as a suction chamber for the medium to be induced and a pressure chamber to accommodate the medium pumped by the screw shafts. The pump housing is inserted into a pressure housing and attached to the pressure housing, so that the pressure chamber encloses the pump, at least in part.