Cylinder Liner Retainer Torque Multiplier
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for replacing cylindrical liners in oilfield pumps require excessive torque, leading to safety hazards and inefficiencies due to the need for manual or mechanical application of 4000 foot-pounds of torque, which is cumbersome and accident-prone.
Innovation Solution
A cylinder liner retainer system incorporating a torque multiplier with a pinion bracket assembly and collar nut, allowing for the quick release and reinsertion of cylinder liners by utilizing a pinion with gear teeth and a rotatable actuator to reduce the required torque through a gear ratio advantage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional manual or mechanical methods are used to apply 4000 foot-pounds of torque to the liner nut, then the liner can be securely installed, but the operation becomes cumbersome and accident-prone requiring excessive force
Solution Approach 1:
A torque multiplier device is introduced as an intermediary between the operator and the liner nut. This device includes a pinion gear that engages with a gear on the liner nut, allowing the operator to apply much less force (600-700 foot-pounds) while the gear mechanism multiplies this force to achieve the required 4000 foot-pounds of torque, thereby making the operation safer and easier
Solution Approach 2:
The solution transitions from direct linear force application to rotational force multiplication through a gear mechanism. By introducing the rotational dimension with the pinion gear engaging the liner nut gear, the system converts small rotational input force into large rotational output torque, solving the contradiction between required strength and ease of operation
2Strength
If traditional methods requiring 4000 foot-pounds of torque are used, then secure liner installation is achieved, but maintenance time and complexity increase
Solution Approach 1:
The torque multiplier device serves as a mediator that quickly transforms minimal operator input into the high torque required for secure liner installation. This eliminates the need for time-consuming manual techniques such as using long pipes or large hammers, significantly reducing maintenance time while maintaining liner retention security
Solution Approach 2:
The patent replaces complex mechanical workarounds (long pipes, large hammers, multiple operators) with a dedicated torque multiplier mechanism. This specialized mechanical device performs the high-torque function efficiently in a single operation, reducing both time and complexity of the maintenance process
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 system significantly reduces the torque needed to install and remove cylinder liners, enhancing safety and efficiency by lowering the necessary force to around 600-700 foot-pounds, thereby minimizing the risk of accidents and speeding up maintenance processes.
Implementation Method 1
a collar nut having a gear with teeth configured to be rotatably coupled with the gear teeth on the pinion
Implementation Method 2
The system significantly reduces the torque needed to install and remove cylinder liners, enhancing safety and efficiency by lowering the necessary force to around 600-700 foot-pounds
Implementation Method 3
the collar nut formed with threads configured to be threadably coupled with the threads on the liner housing
Data Source
AI summary
The present invention provides a cylinder liner retainer system with a torque multiplier and associated method to quickly release an existing cylinder liner and reinsert a new cylinder liner as a replacement.