Hydraulic Ram Packing Closure for Faster Pump Maintenance
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Solution Overview
Problem
The conventional packing system in centrifugal pumps is cumbersome to replace, requiring the removal and reinstallation of gland followers and packing material, which is time-consuming and prone to premature failures.
Innovation Solution
A miniaturized water hydraulic ram system is used to compress and hold the packing rings in place, replacing the traditional nut and bolt system, allowing for easier installation and maintenance by applying hydraulic pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional nut and bolt system is used to hold packing rings in place, then the packing can be securely held, but the replacement process becomes time-consuming and cumbersome
Solution Approach 1:
The patent replaces the traditional mechanical nut and bolt system with a hydraulic ram system. The hydraulic ram uses fluid pressure to compress and hold the packing rings in place, eliminating the need for manual tightening of multiple fasteners. This substitution of mechanical fastening with hydraulic compression significantly reduces the time and complexity of packing replacement operations.
Solution Approach 2:
The patent employs a hydraulic ram that uses hydraulic fluid under pressure to generate the compressive force needed to hold the packing rings. The hydraulic system allows for rapid application and release of compression force, enabling quick replacement of packing without the time-consuming process of threading and tightening multiple bolts by hand.
2Reliability
If a gland follower with multiple fasteners is used to secure packing, then the packing is held firmly, but the system becomes complex and difficult to maintain
Solution Approach 1:
The patent replaces the complex mechanical assembly of gland followers and multiple fasteners with a simpler hydraulic ram system. The hydraulic ram provides reliable packing retention through fluid pressure while reducing the number of mechanical components that could fail or require maintenance.
Solution Approach 2:
The hydraulic ram serves multiple functions: it provides the compressive force to hold packing rings, allows for easy adjustment of packing tension, and can be rapidly deactivated for maintenance. This multi-functionality consolidates what would otherwise require multiple separate mechanical components into a single integrated system.
3Ease of manufacture
If conventional packing installation methods are used, then the packing can be installed, but the process is tedious and requires multiple steps
Solution Approach 1:
The hydraulic ram system replaces the tedious manual process of installing and tightening multiple fasteners with a simple hydraulic activation. The packing rings are positioned in place, and the hydraulic ram is activated to compress them, eliminating the need for manual threading and tightening operations.
Solution Approach 2:
The packing rings can be pre-positioned in the stuffing box before the hydraulic ram is activated. This preliminary positioning, combined with the rapid hydraulic compression, streamlines the installation process and eliminates the need for iterative adjustment and tightening that characterizes conventional mechanical fastening methods.
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 solution simplifies the replacement process, reduces maintenance time, and prevents premature pump failures by providing a reliable and efficient means of maintaining pump integrity, while being environmentally friendly and adaptable for various applications.
Implementation Method 1
A miniaturized water hydraulic ram system is used to compress and hold the packing rings in place, replacing the traditional nut and bolt system, allowing for easier installation and maintenance by applying hydraulic pressure.
Data Source
AI summary
A hydraulic ram used for maintaining pressure on pump packing. A pump packing closure mechanism is sized to extend around a shaft of a pump, and to close a space between the shaft of the pump and a housing. The closure mechanism presses against packing rings that surround the shaft of the pump. A hydraulic ram presses the closure mechanism against the packing rings.