Flexible Cleaning Lance Positioner Guide for Offset Tubes
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Solution Overview
Problem
Conventional lance positioner guides are inflexible and cannot effectively position a high-pressure nozzle within heat exchanger tube configurations with offset tube penetrations, such as in package boiler heat exchanger water boxes, making it difficult to clean such systems.
Innovation Solution
A flexible high-pressure fluid cleaning lance positioning apparatus with a straight guide rail, tractor drive module, helix clad hose drive module, and elbow right-angle guide rotator module, allowing the nozzle to be positioned and rotated to align with tubular objects, even in configurations with radial tube extensions from a heat exchanger water box.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional rigid lance positioner guides are used, then the structure is simple and stable, but the apparatus cannot position the nozzle in heat exchangers with offset tube penetrations
Solution Approach 1:
The positioning apparatus is divided into multiple independent modules: a guide rail module, a positioner module, and a rotator module. Each module performs a specific function and can be independently assembled or adjusted, enabling the system to adapt to different tube configurations while maintaining manageable complexity
Solution Approach 2:
The apparatus transitions from a static rigid structure to a dynamic system with adjustable components. The guide rail can be repositioned along the access cover, the positioner can move the nozzle to different locations, and the rotator can orient the nozzle at various angles, allowing adaptation to offset tube penetrations
2Adaptability or versatility
If rigid frame structures are used for lance positioning, then manufacturing and assembly are straightforward, but the system cannot accommodate tube penetrations offset from the access cover
Solution Approach 1:
The system is segmented into standardized modules that can be manufactured separately and assembled in different configurations. The guide rail, positioner, and rotator are independent units that can be produced using standard manufacturing processes, then assembled to match specific heat exchanger layouts
Solution Approach 2:
The positioning apparatus is designed as a universal system that can work with multiple heat exchanger configurations. The adjustable guide rail and rotator mechanism allow the same basic apparatus to accommodate both straight and offset tube penetrations, eliminating the need for custom-built solutions for each configuration
3Ease of operation
If conventional rigid guides are used, then the structure is stable and easy to operate, but it is extremely difficult to guide the high pressure nozzle into offset tubes
Solution Approach 1:
The system provides dynamic positioning capabilities through the positioner module that can move the nozzle to different locations, and the rotator module that can orient the nozzle at various angles. This dynamic adjustment makes it easy to guide the nozzle into offset tubes while maintaining operational simplicity
Solution Approach 2:
The guide rail acts as an intermediary structure that provides a stable reference framework, while the positioner and rotator serve as intermediary mechanisms that translate operator control into precise nozzle positioning. This layered approach maintains ease of operation while achieving the adaptability needed for offset configurations
Data Source
AI summary
A flexible high pressure fluid cleaning lance drive apparatus includes a guide rail having a longitudinal axis adapted to be positioned within a boiler water box and aligned in a fixed position with respect to a central axis of the water box. A tractor drive module is mounted on the guide rail, a helix clad high pressure fluid hose drive module is mounted on the guide rail operable to propel a flexible lance helix clad hose through the drive module along an axis parallel to the guide rail longitudinal axis, and a right angle guide rotator module is mounted on the guide rail and connected to the tractor module for positioning a rotatable high pressure nozzle carried by the helix clad hose within a guide tube attached to the rotator module.