Cross-jet Nozzle Dome Tip Parallel Tube Cleaning
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Solution Overview
Problem
The existing high-pressure pipe cleaning technologies face challenges in reliably introducing and aligning multiple cross-jet nozzles due to high recoil forces and limited space, leading to jamming and safety issues during the cleaning of tube bundles.
Innovation Solution
The cross-jet nozzle design features a rotor body with a dome-like, edge-free nozzle tip and strategically oriented channels, allowing for parallel and simultaneous introduction of nozzles without interference, supported by a controllable lance device with a high-pressure connection, enabling reliable cleaning under high pressures up to 3000 bar.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple cross-jet nozzles are introduced in parallel simultaneously, then cleaning productivity is improved, but the risk of jamming and loss of controlled alignment increases due to high recoil forces and limited space
Solution Approach 1:
The system segments the cleaning function into multiple independent cross-jet nozzles that can operate simultaneously, each handling a portion of the tube bundle cleaning task. This segmentation enables parallel operation to improve productivity while maintaining individual control capability for each nozzle through the robotic system
Solution Approach 2:
A robotic system with force control capability acts as an intermediary between the operator and the multiple cross-jet nozzles. The robot controller monitors and adjusts the position and orientation of each nozzle in real-time, compensating for recoil forces and preventing jamming, thereby ensuring reliable controlled introduction while enabling parallel operation
2Power
If high-pressure cleaning is used to improve cleaning effectiveness, then cleaning power is improved, but recoil forces increase causing tracking and alignment problems
Solution Approach 1:
The robotic system incorporates force control capability that provides real-time feedback on the recoil forces experienced by each cross-jet nozzle. The controller continuously adjusts the nozzle positions and orientations based on this feedback, maintaining proper alignment despite the high recoil forces generated by high-pressure cleaning operations
Solution Approach 2:
The patent replaces manual mechanical control with an automated robotic system that uses sensors and controllers to manage the high-pressure nozzles. This substitution enables precise tracking and adjustment of nozzle positions under high recoil forces, which would be difficult to achieve through manual operation alone
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 design ensures safe and effective parallel introduction of cross-jet nozzles, reducing jamming and improving cleaning efficiency while ensuring safety, even in tight spaces, by minimizing resistance and allowing for precise guidance of the nozzles during rotation.
Implementation Method 1
a rotor body (10) having a number of channels and nozzles, in which channels (1030, 1030') lead from a feed channel (11) to at least one cleaning nozzle (100), a rotating nozzle (101) and a decelerating jet nozzle (102)
Implementation Method 2
The cross-jet nozzles mounted on the lances are introduced into the parallel channels rotating at a few hundred revolutions per minute and then pulled out again by remote control. Several lances are operated linearly parallel to each other by means of a drive unit, whereas the cross-jet nozzles during operation rotate around their longitudinal axes under a pressure load of up to 3000 bar.
Data Source
AI summary
A cross-jet nozzle includes a rotor body, in which several channels are recessed or formed running from a nozzle tip in the direction of a stator body, in which at least two front jet nozzles are positioned in the rotor body through at least two front jet channels and oriented so that front jets of a pressurized medium emerging from the front jet channels intersect outside of the rotor body and the rotor body can be mounted to rotate around its longitudinal axis on the stator body, which can be connected to a high-pressure line connection, is introduced safely parallel into tubes by a drive unit of a lance device. The nozzle tip is provided with an outer surface so that the surface is configured convexly arched, dome-like and free of edges and the nozzle tip is formed mirror-symmetric with the longitudinal axis in profile.