Well Cleaning Device with Annular Hydraulic Flow Equalization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional well cleaning devices face inefficiencies due to uneven flow distribution and limited volume throughput, particularly in aquifers with varying permeabilities, leading to suboptimal cleaning performance and increased complexity and cost.
Innovation Solution
A device with a hydraulic connection between the outer and inner tubes, forming an annular space that penetrates the removal chamber, allows for equalization of volume flows above and below the removal chamber, enhancing flow equalization and throughput through a larger cross-sectional area and robust mechanical design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional working chambers with seals are used to increase flow rate, then the flow rate through the working chamber increases, but the flow velocity in the annular space and adjacent rock decreases due to lateral flow reduction
Solution Approach 1:
The device divides the well filter into multiple working sections by using multiple separable working chambers that can be introduced at different positions. Each chamber creates a localized high-velocity flow zone, ensuring that the entire filter length benefits from effective cleaning without the lateral flow reduction problem affecting the whole system.
Solution Approach 2:
The invention transitions from a single long working chamber to multiple short working chambers distributed along the filter length. This dimensional redistribution maintains high flow velocities in each localized section while avoiding the lateral flow reduction that occurs in conventional single-chamber designs.
2Area of stationary object
If a single long working chamber is used, then the chamber can treat the entire filter length, but the flow velocity becomes uneven and cleaning quality deteriorates
Solution Approach 1:
The filter length is divided into multiple working sections, each treated by a separate working chamber. This segmentation ensures uniform cleaning quality across the entire filter length, as each short chamber maintains high flow velocities without the degradation that occurs in long single-chamber designs.
Solution Approach 2:
Multiple working chambers are introduced sequentially or simultaneously at different positions along the filter. Each chamber applies excessive local action (high flow velocity) to its specific section, ensuring thorough cleaning of the entire filter length through cumulative partial actions.
3Adaptability or versatility
If multiple pumps and separate chambers are used to clean gravel backfill, then cleaning coverage increases, but device complexity and cost increase
Solution Approach 1:
A single pump device is designed to handle multiple working chambers sequentially or simultaneously. The pump serves universal functions of introducing cleaning water to different sections and removing contaminated water, eliminating the need for multiple dedicated pumps while maintaining comprehensive cleaning coverage.
Solution Approach 2:
Multiple working chambers are combined into a coordinated system operated by a single pump. The chambers can be introduced sequentially or simultaneously, merging their cleaning functions into a unified operation that reduces overall device complexity while maintaining extensive cleaning coverage.
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 configuration ensures improved flow equalization and cleaning efficiency across the well filter, reducing operational complexity and costs by maintaining consistent flow rates despite varying aquifer permeabilities, and facilitating easier device movement within the well.
Implementation Method 1
hydraulic connection between the areas that each adjoin the outer end faces of the two volume bodies that are opposite to the removal chamber
Implementation Method 2
a pump device, by operating which, a suction can be generated in the delivery line, as a result of which water is discharged from the well
Data Source
Figure 1
Figure 2
Figure 3.1
AI summary
The invention relates to a device (1) for activating or cleaning filter pipe wells with a filter pipe, comprising a first and a second volume body (12, 14) whose outer diameter is substantially adapted to the inner diameter of the filter pipe and which each have sealing means (16) on their outer circumferential surface by means of which a sealing effect between the volume bodies (12, 14) and the inner wall of the filter pipe can be adjusted, a sampling chamber formed between the first and second volume bodies (12, 14) and the inner wall of the filter pipe (10), wherein the sampling chamber can be hydraulically connected to a pump device.There is a hydraulic connection between the areas that each border the outer end faces of the two volume bodies (12, 14) opposite the extraction chamber, namely through an annular space that completely penetrates at least the extraction chamber in the direction of the longitudinal axis of the device (1) and is formed between an outer tube (26) and an inner tube (27) arranged inside the outer tube (26).