Variable Length Flame Scanner Telescopic Adjustment
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Solution Overview
Problem
Conventional flame scanners face challenges with dimensional mismatches between the guide pipe and flame scanner assembly, leading to inefficient light transmission and performance degradation due to 'pull back' and sagging guide pipes, which require costly adjustments and maintenance.
Innovation Solution
A variable length flame scanner system utilizing a telescopic interconnection between the spool assembly and mounting shaft allows for adjustable length matching with the guide pipe, ensuring proper seating and alignment, even with variations in manufacturing tolerances and equipment changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed length flame scanner assembly is used, then manufacturing is simpler, but dimensional mismatches with guide pipes occur leading to improper seating and performance degradation
Solution Approach 1:
The flame scanner assembly incorporates a telescopic mechanism with a spool assembly and mounting shaft that allows the length to be dynamically adjusted. This enables the assembly to adapt to varying guide pipe lengths and seating positions, ensuring proper contact and light transmission while maintaining manufacturing simplicity through a modular design.
2Reliability
If the flame scanner assembly length is increased to ensure compression seating, then seating reliability improves, but light transmission efficiency decreases due to excessive length
Solution Approach 1:
The telescopic mechanism allows precise adjustment of the flame scanner assembly length to match the specific guide pipe dimensions. This ensures the minimum necessary compression for reliable seating while avoiding excessive length that would attenuate light transmission, optimizing both seating reliability and light transmission efficiency.
Solution Approach 2:
The system enables changing the length parameter of the flame scanner assembly to match varying guide pipe specifications. By adjusting the spool assembly position, the assembly length is optimized for each installation scenario, ensuring adequate compression without excessive length that would reduce light transmission.
3Adaptability or versatility
If variable length adjustment is added to the flame scanner assembly, then adaptability to different guide pipes improves, but device complexity increases
Solution Approach 1:
The telescopic mechanism provides variable length adjustment through a spool assembly and mounting shaft configuration. This allows the flame scanner assembly to adapt to different guide pipe lengths while maintaining a relatively simple mechanical structure that can be manufactured and maintained with standard industrial capabilities.
Solution Approach 2:
The flame scanner assembly is divided into modular components including the spool assembly, mounting shaft, and flame sensor section. This segmentation enables independent adjustment of the telescopic mechanism while keeping other components standardized, reducing overall complexity through modular design principles.
4Adaptability or versatility
If manual adjustment and maintenance are required for guide pipe dimensional changes, then adaptability is maintained, but maintenance time and costs increase
Solution Approach 1:
The telescopic mechanism with locking capability allows quick adjustment of the flame scanner assembly length to accommodate guide pipe dimensional changes. The locking feature maintains the adjusted position without requiring continuous manual intervention, reducing maintenance time while preserving adaptability to dimensional variations.
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 adjustable system ensures consistent flame monitoring performance by maintaining proper seating and alignment, reducing maintenance needs and maintaining effective light transmission, even with guide pipe stretching or sagging over time.
Implementation Method 1
visible light, in the range of approximately 400 to 700 nanometers, is collected from inside a combustion chamber, transmitted through a fiber optic cable
Implementation Method 2
directed onto a single photodiode to produce an electrical signal utilized by the separate processing electronics
Data Source
AI summary
An apparatus for varying a length of a flame scanner assembly for monitoring a flame includes a mounting shaft which connects to a fiber optic cable assembly; and a spool assembly having a first end and a second opposite end. The first end connects to a detector head assembly and the second end is configured to connect to a guide pipe. The second end of the spool assembly receives one end of the mounting shaft and a length of the flame scanner assembly is adjusted via telescopic interconnection between the second end of the spool assembly and the one end of the mounting shaft such that longitudinal displacement therebetween may be varied by slidable displacement of the mounting shaft relative to the spool assembly.