Dynamic Packing Seal Compression for High-Pressure Reciprocating Pumps
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Reciprocating pumps used in oil and gas operations face challenges with component wear and maintenance due to high cyclical pressures, leading to reduced lifespan and increased maintenance needs.
Innovation Solution
A reciprocating apparatus with a packing system that includes a cylindrical compressible packing and Belleville springs to maintain compression, enhancing the sealing effectiveness and extending the life of the reciprocating element and packing stack, thereby reducing maintenance requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If reciprocating pumps operate under high cyclical pressures, then pumping performance is achieved, but component wear increases and lifespan decreases
Solution Approach 1:
The packing compression system transitions from static to dynamic by incorporating springs that automatically adjust compression force in response to reciprocating element movement and wear, maintaining optimal sealing pressure throughout operation and extending component lifespan
Solution Approach 2:
The system changes the compression parameter dynamically through spring mechanisms that respond to pressure and wear conditions, adjusting the packing compression force to maintain sealing effectiveness under varying high-pressure operating conditions
2Power
If reciprocating pumps operate under high cyclical pressures, then pumping performance is achieved, but maintenance frequency increases
Solution Approach 1:
The packing compression system performs self-adjustment through spring mechanisms that automatically compensate for wear and maintain compression without external intervention, eliminating the need for frequent manual maintenance and reducing downtime
3Reliability
If packing compression is maintained under high pressure, then sealing effectiveness is improved, but compression force requirements increase
Solution Approach 1:
The spring-based compression system applies periodic compression force that synchronizes with the reciprocating motion, maintaining sealing effectiveness through rhythmic pressure application rather than continuous high force, reducing overall force requirements
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
The packing system effectively maintains compression and extends the lifespan of the reciprocating element and packing stack, reducing maintenance costs and downtime by ensuring consistent sealing performance under high-pressure conditions.
Implementation Method 1
A packing system is disclosed that comprises: a packing stack comprising a packing; one or more springs, and a terminal component configured for sealing a terminus of the reciprocating element bore. The packing is cylindrical and compressible
Implementation Method 2
The packing is cylindrical and compressible such that the packing can fill a void volume in a reciprocating element bore of the pump
Data Source
AI summary
A packing system for a pump includes a packing stack comprising a packing, wherein the packing is cylindrical and compressible such that the packing can fill a void volume in a reciprocating element bore of the pump; one or more springs; and a terminal component configured for sealing a terminus of the reciprocating element bore, wherein the one or more springs are positioned between the terminal component and the packing to provide a force on the packing that maintains compression of the packing within the void volume.