Engine Wash Manifold Nozzle Alignment Guide

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Solution Overview

Problem

Gas turbine engines suffer from contaminant buildup on components, leading to corrosion and performance issues, and conventional engine washing methods are limited in effectively addressing these problems.

Innovation Solution

An engine wash apparatus comprising a manifold secured to the nose cone with a feeder pipe and nozzles to deliver wash liquid, along with a guide for alignment, ensures thorough cleaning of the engine core and blades by directing the wash liquid through strategically positioned nozzles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If low pressure injector nozzles are inserted into engine ports to deliver cleaning fluid, then the cleaning process is simple to implement, but the cleaning coverage is limited only to the engine compressor area

Engineering Contradiction:
Improvecleaning coverage areaVSAvoidwashing system complexity
Core Design Contradiction:
Area of stationary objectVSDevice complexity

Solution Approach 1:

The washing system is segmented into multiple nozzle assemblies positioned at different locations (inlet port, compressor port, turbine port, exhaust port) to cover different engine areas. Each nozzle assembly is an independent unit that can be selectively activated based on contamination levels and washing requirements, enabling comprehensive coverage without requiring a single complex system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The manifold assembly serves multiple functions: it distributes wash liquid to multiple nozzle assemblies, provides alignment guidance through guide members, and enables selective activation of different nozzle groups. This multi-functional design allows a single apparatus to address various cleaning needs across the entire engine rather than requiring separate systems for each area.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If multiple nozzle assemblies are positioned at different engine locations to achieve thorough cleaning, then cleaning effectiveness is improved, but the time required for washing increases

Engineering Contradiction:
Improvecleaning effectivenessVSAvoidwashing time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system incorporates selective activation capability where different nozzle assemblies can be turned on or off based on real-time assessment of contamination levels in different engine areas. This dynamic operation allows the washing process to focus resources on heavily contaminated areas while skipping cleaner areas, thereby maintaining high cleaning effectiveness while reducing overall washing time.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The manifold assembly is pre-positioned and aligned with the engine using guide members before washing begins. This preliminary alignment ensures that all nozzle assemblies are correctly positioned relative to their target areas, eliminating the need for time-consuming adjustments during the washing process and enabling immediate effective cleaning upon activation.

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If the manifold is securely attached to the nose cone with precise alignment, then wash liquid delivery accuracy is improved, but the complexity of attachment and alignment increases

Engineering Contradiction:
Improvenozzle alignment precisionVSAvoidattachment mechanism complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

Guide members act as intermediary elements between the manifold assembly and the engine. These guides provide physical constraints that automatically align the manifold with the engine's coordinate system, ensuring precise positioning of nozzles relative to target areas. The guide members translate the complex alignment requirement into a simple insertion and engagement operation.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The attachment mechanism is designed to be self-aligning through the guide members, which automatically position the manifold correctly when engaged with the nose cone. This self-alignment feature eliminates the need for external alignment tools or complex adjustment mechanisms, reducing operational complexity while maintaining high positioning precision.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS9034111B2Engine wash system and method
Publication Date: 2015.05.19 ECOSERVICES LLC
  • US9034111B2 patent drawing
  • US9034111B2 patent drawing
  • US9034111B2 patent drawing

AI summary

An engine wash system includes a manifold to secure to a nose cone of an engine; a feeder pipe connecting to the manifold to deliver wash liquid to the manifold; a plurality of nozzles connected to the manifold to direct the wash liquid into the engine; a hook connected to the manifold to connect to a slot on the nose cone; and a guide connected to the feeder to align the manifold relative to the engine.