Packing Cartridge Lubrication Delivery for Low-Temperature Grease Flow
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Solution Overview
Problem
Existing well services pumps face challenges in efficiently lubricating packing cartridges due to varying viscosities of lubricating fluids, particularly at low temperatures, leading to inefficiencies and potential mechanical issues.
Innovation Solution
A lubrication delivery system with a lubricant reservoir, pump, and agitator blade is introduced, which includes a horizontally positioned agitator blade within the reservoir to enhance lubrication by forcing lubricant into the packing cartridge, and a screen to prevent debris and air ingress, ensuring consistent lubrication even at low temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional lubrication systems are used with packing cartridges, then the system structure remains simple, but lubrication efficiency deteriorates due to varying viscosities at low temperatures
Solution Approach 1:
The agitator blade is positioned within the lubricant reservoir to preliminarily agitate and condition the lubricant before it reaches the packing cartridge, ensuring proper viscosity and flow characteristics even at low temperatures. This preliminary action prevents lubrication failures by preparing the lubricant in advance.
Solution Approach 2:
The lubrication delivery system acts as an intermediary between the lubricant reservoir and the packing cartridge, mediating the lubricant delivery process. The system includes a pump, agitator, and delivery mechanism that actively manage lubricant flow and viscosity, ensuring reliable lubrication despite temperature variations.
2Reliability
If lubricant viscosity increases at low temperatures, then lubrication coverage improves, but lubricant flow to the packing cartridge deteriorates
Solution Approach 1:
The lubrication system incorporates dynamic elements including a pump and agitator blade that actively adjust lubricant flow and mixing based on operating conditions. This dynamic approach allows the system to maintain proper lubricant flow rates even when viscosity increases at low temperatures, preventing both under-lubrication and flow starvation.
Solution Approach 2:
The system changes physical parameters of the lubricant delivery process by using heating elements and agitation to modify lubricant viscosity and flow characteristics. These parameter changes ensure the lubricant maintains appropriate flow properties across a range of temperatures, balancing coverage and flow rate.
3Reliability
If no agitation mechanism is used in the lubricant reservoir, then the system remains simple, but lubrication consistency deteriorates due to viscosity variations
Solution Approach 1:
The agitator blade performs preliminary agitation of the lubricant within the reservoir, ensuring uniform viscosity and preventing stratification before the lubricant is pumped to the packing cartridge. This preliminary action maintains consistent lubrication quality without requiring complex continuous control systems.
4Reliability
If lubricant is delivered without filtration, then the system structure remains simple, but mechanical failures increase due to debris ingress
Solution Approach 1:
The lubrication delivery system serves as an intermediary that includes filtration capabilities, removing debris and contaminants from the lubricant before it reaches the packing cartridge. This intermediary function protects the packing cartridge from mechanical failure due to particle ingress while maintaining system reliability.
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 ensures effective lubrication of packing cartridges, maintaining pump efficiency and preventing mechanical failures by adapting to viscosity changes and environmental conditions.
Implementation Method 1
an agitator blade, the agitator blade positioned above the lubrication pump within the lubricant reservoir, wherein the agitator blade has a blade section positioned horizontally above the lubrication pump
Implementation Method 2
a lubrication pump, the lubrication pump positioned below the lubricant reservoir and in fluid connection with the lubricant reservoir
Data Source
AI summary
A fluid end system includes a well services pump, the well services pump including fluid ends, the fluid ends including a packing cartridge. The fluid end system also includes a lubrication delivery system, the lubrication delivery system in fluid connection with the packing cartridge. The lubrication delivery system includes a grease reservoir and a lubrication pump, the lubrication pump positioned below the grease reservoir and in fluid connection with the grease reservoir. The lubrication delivery system also includes an agitator blade, the agitator blade positioned above the lubrication pump within the grease reservoir, wherein the agitator blade has a blade section positioned horizontally above the lubrication pump.