Progressive Cavity Pump Dismount Casing for Leak-Safe Maintenance
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Solution Overview
Problem
Progressive cavity pumps require extensive disassembly for maintenance and repair, leading to long system downtimes and potential leaks due to split casing designs that compromise fluid pressure handling.
Innovation Solution
A dismounting device with variable thickness dismount casings that mate to provide a cylindrical shape, allowing for easy access to internal components without full disassembly, maintaining structural integrity and seal integrity for high-pressure environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If a split casing design is used to access internal components, then ease of repair is improved, but reliability deteriorates due to increased susceptibility to leaks and reduced maximum fluid pressure handling
Solution Approach 1:
The pump is divided into modular sections with removable end caps at both ends of the housing, allowing access to internal components without compromising the integrity of the main pressure-containing casing. The split casing is segmented into removable end caps rather than dividing the main body, maintaining pressure integrity while enabling maintenance access.
2Ease of repair
If full disassembly is performed for maintenance, then ease of repair is improved, but loss of time increases due to extensive disassembly requirements
Solution Approach 1:
The pump assembly is segmented into independently removable end caps that can be detached without disassembling the entire pump or piping system. This modular segmentation allows maintenance personnel to access internal components quickly by removing only the necessary end cap, significantly reducing system downtime compared to full disassembly requirements.
Solution Approach 2:
The end caps are designed to be extractable from the housing without removing the pump from the piping system. This extraction principle allows maintenance personnel to remove and service internal components such as seals, rotors, and stators in place, eliminating the time-consuming process of complete pump disassembly and reassembly.
3Strength
If a robust design is maintained for heavy industry use, then strength is improved, but ease of repair deteriorates due to difficulty in accessing internal components
Solution Approach 1:
The robust housing is segmented with removable end caps that provide access points without compromising overall structural integrity. The main pressure-containing casing remains intact and robust, while the end caps serve as accessible entry points for maintenance, reconciling the need for both strength and ease of repair in heavy industrial applications.
Data Source
AI summary
A pump includes a housing having a first end and a second end and extending along a longitudinal axis and a discharge casing having a first end coupleable to the second end of the housing. The discharge casing extends along the longitudinal axis coaxial to the housing. A dismounting device includes a first dismount casing and a second dismount casing disposed between the discharge casing and the second end of the housing. The dismounting device extends along the longitudinal axis coaxial to the housing and the discharge casing.