Weighted Cleaning Device for Enhanced Heat Exchange Tubes
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Solution Overview
Problem
Conventional foam balls are ineffective in cleaning the internal spiral grooves of enhanced heat exchange tubes due to lack of positive physical contact, leading to fouling and increased susceptibility to corrosion, which complicates maintenance and reduces system efficiency.
Innovation Solution
A cleaning device with a spherical mass featuring a conical aperture and fin-shaped and filament-like protrusions, made from engineered materials, that utilizes fluid flow and weighted core for differential dynamic pressure and rotational momentum to effectively navigate and clean the internal rifling of enhanced tubes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional foam balls are used to clean tubes, then the cleaning process is simple and automatic, but the cleaning effectiveness on enhanced tubes with spiral grooves is insufficient
Solution Approach 1:
The cleaning device is segmented into multiple functional protrusions (fin-shaped and filament-like) that can independently contact and clean different portions of the spiral grooves, allowing each segment to perform a specific cleaning function on the enhanced tube surface
Solution Approach 2:
The invention adds dimensional complexity by introducing protrusions extending in multiple directions from the spherical mass, enabling the device to engage with the three-dimensional spiral groove structure of enhanced tubes, rather than relying on simple spherical contact
2Productivity
If enhanced tubes with internal rifling are used to improve heat transfer, then heat exchange efficiency increases, but cleaning difficulty and susceptibility to fouling increase
Solution Approach 1:
The cleaning device utilizes the existing fluid flow through the heat exchanger system to propel itself and activate the cleaning action, eliminating the need for external cleaning equipment or system shutdown, allowing the system to clean itself during normal operation
Solution Approach 2:
The invention changes the physical parameters of the cleaning device by using weighted core positioning and protrusion design to create differential dynamic pressure that adapts to the spiral groove geometry, enabling effective cleaning without damaging the enhanced tube structure
3Reliability
If a spherical mass with protrusions is used to clean spiral grooves, then positive physical contact is achieved, but the device complexity increases
Solution Approach 1:
The cleaning device incorporates a movable weighted core within the spherical mass that can shift position in response to fluid flow and contact forces, allowing the protrusions to dynamically adjust their orientation and maintain optimal contact with the spiral grooves during operation
Solution Approach 2:
The invention uses composite construction by combining the spherical mass material with separately attached fin-shaped and filament-like protrusions, allowing each component to be optimized for its specific function while maintaining overall device simplicity
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 efficiently removes foul deposits from the spiral grooves of enhanced tubes, maintaining system efficiency and preventing corrosion, while its design ensures effective cleaning without damaging the tube surfaces.
Implementation Method 1
utilizes fluid flow and weighted core for differential dynamic pressure and rotational momentum
Implementation Method 2
utilizes fluid flow and weighted core for differential dynamic pressure and rotational momentum
Implementation Method 3
utilizes fluid flow and weighted core for differential dynamic pressure and rotational momentum
Data Source
AI summary
The present invention provides a device for cleaning tubes, in particular the internal surfaces of tubes in heat exchange systems. The device comprises a mass (2) with an optionally provided central through-hole (10) disposed thereon, and optionally provided a plurality of protrusions (20, 21) mounted and/or moulded on the mass (2). The through-hole (10) is preferably of a conical shape-like configuration. A plurality of first protrusions (20) is disposed in a fin-like arrangement on the mass (2). A plurality of second protrusions (21) is disposed in a spiral arrangement on the mass (2), and the lengths of the second protrusions (21) are relatively longer than the length of the first protrusions (20). The mass may consist of an asymmetrically positioned weighted core (15) of different weights and sizes to provide a variety of relative density to the device and to serve as a geometrical manipulation to impart rotational momentum and random dynamic motion to the device.