Integrated Multi-Pump Mixed-Fluid Delivery for Variable Flow
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Solution Overview
Problem
Existing eccentering devices in petroleum exploration are limited to providing high-pressure hydraulic oil at a single flow rate, leading to power waste or shortage, and cannot meet the diverse requirements of different devices.
Innovation Solution
A multi-pump integrated mixed fluid delivery device that uses a dual-shaft motor to simultaneously drive multiple hydraulic plunger pumps, allowing for the output of high-pressure hydraulic oil at different flow rates through gear linkage, and includes a pipeline unit for signal and hydraulic oil transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single pump is used to provide high-pressure hydraulic oil, then the device structure is simple, but it cannot provide different flow rates leading to power waste or shortage
Solution Approach 1:
The patent combines multiple pumps into a single integrated pump assembly where multiple plunger pumps share common drive mechanisms and housing. This merging approach allows the system to provide multiple flow rates through a single coordinated unit rather than requiring separate independent pump systems, thus improving adaptability while controlling complexity.
Solution Approach 2:
The pump assembly is designed as a universal power source that can deliver high-pressure hydraulic oil at multiple flow rates to satisfy different power requirements of various downhole devices. The multi-functional design enables a single pump system to replace what would otherwise require multiple specialized pumps.
2Productivity
If multiple independent pumps are used to provide different flow rates, then power requirements can be met, but the device structure becomes complex and space-consuming
Solution Approach 1:
The pump assembly employs a nested configuration where multiple plunger pumps are arranged concentrically or in compact tiers within a shared housing. The driveshafts and gears are nested along a common axis, allowing multiple pumping units to occupy minimal space while maintaining independent flow rate capabilities.
Solution Approach 2:
Instead of arranging multiple pumps in a linear sequence that would consume excessive axial space, the invention utilizes radial and concentric arrangements, transitioning from one-dimensional linear layout to two-dimensional radial packing. This dimensional change enables compact packaging of multiple pumps within a smaller overall volume.
3Adaptability or versatility
If multiple independent pumps are used, then different flow rates can be provided, but the connection structure becomes complicated
Solution Approach 1:
Multiple plunger pumps are merged into a single assembly with shared mounting housing, common drive shafts, and integrated gear mechanisms. This consolidation reduces the number of separate connections and mounting interfaces required, simplifying the overall connection structure while maintaining the capability to provide multiple flow rates.
4Ease of operation
If a single pump is used, then the device is easy to install and maintain, but it leads to power waste or shortage
Solution Approach 1:
The multiple pumps are merged into an integrated assembly with common drive mechanisms and shared mounting structures, maintaining installation and maintenance simplicity similar to a single pump system. The unified design allows technicians to service the entire pump assembly as one unit rather than dealing with multiple independent systems.
Solution Approach 2:
The pump assembly enables dynamic adjustment of flow rate parameters through variable displacement mechanisms or selectable gear ratios, allowing the system to optimize power delivery to match actual device requirements and avoid both power waste and power shortage conditions.
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 device expands power application scope, simplifies the connection structure, and enhances installation and maintenance efficiency by providing various power options for different needs, while meeting space requirements in well diameters.
Implementation Method 1
the output shaft of the dual-shaft motor drives the plunger pumps to synchronously rotate through the gears, so as to suck hydraulic oil in a mounting chamber of the each of the plunger pumps for pressurization
Implementation Method 2
drive shafts of the plunger pumps are connected with each other through gears which are engaged with each other; an output shaft of the dual-shaft motor, which is provided at one end of the dual-shaft motor, is connected with one of the gears
Implementation Method 3
the another output shaft of the dual-shaft motor drives the lead screw to rotate, so that the screw nut drives the piston rod to axially move
Data Source
AI summary
A multi-pump integrated mixed fluid delivery device includes a hollow cylindrical casing, a hydraulic drive part, a power part, a sample part and a pipeline unit. The hydraulic drive part, the power part, the sample part and the pipeline unit are provided within the casing in sequence. The hydraulic drive part includes multiple hydraulic plunger pumps. The power part includes a dual-shaft motor, wherein an output shaft of the dual-shaft motor is connected with the hydraulic plunger pumps. The sample part includes a lead screw, a screw nut, a piston rod and a sample chamber, wherein one end of the lead screw is connected with another output shaft of the dual-shaft motor, the screw nut is sleeved on the lead screw, the piston rod is fixedly connected with the screw nut. The sample chamber is configured to accommodate a sample.