Adaptive Inertial Particle Separator for Gas Turbine Inlet
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gas turbine engines face performance and reliability issues due to sand and dust ingestion, which current inertial particle separators inadequately address, causing pressure losses and inefficiencies in both clean and sandy conditions.
Innovation Solution
An inflatable boot with fluid exit slots is deployed in the gas turbine engine inlet to separate sand and dust particles by creating a sharper turn in the flow path, enhancing the separation efficiency and reducing particle ingress into the compressor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a known inertial particle separator system is used to remove sand and dust particles, then separation efficiency is improved, but inlet pressure losses increase that detrimentally affect gas turbine engine performance
Solution Approach 1:
The inertial particle separator system is made adaptive by incorporating sensors that detect sand and dust concentrations and automatically adjust the separator's operation. The system transitions from a static, always-active configuration to a dynamic one that activates or intensifies separation only when particles are detected, thereby maintaining high separation efficiency when needed while minimizing pressure losses during clean operating conditions.
Solution Approach 2:
The system changes its operational parameters based on detected particle concentrations. When sensors detect low particle concentrations, the separator operates in a low-resistance mode or remains inactive, preserving inlet pressure. When particle concentrations exceed thresholds, the separator activates or increases its separation intensity, optimizing the balance between separation efficiency and pressure loss.
2Reliability
If a known inertial particle separator system is used to remove sand and dust particles, then separation efficiency is improved, but engine performance loss occurs in clean air conditions
Solution Approach 1:
The adaptive control system dynamically adjusts the separator's activation state based on real-time particle detection. In clean air conditions, the separator remains inactive or operates at minimal resistance, preserving engine performance and fuel efficiency. When particles are detected, the system activates to provide necessary protection, thus optimizing the trade-off between protection and performance across varying operating conditions.
Solution Approach 2:
The harmful function of the particle separator (causing pressure losses and performance degradation) is extracted or removed during clean operating conditions. The system selectively engages the separation function only when particles are present, effectively taking out the detrimental aspect of the separator during clean air operation while retaining the beneficial protection when needed.
3Reliability
If bulky barrier filters are used to remove sand and dust, then sand and dust removal is improved, but the filters are heavy and cause pressure drop at the inlet
Solution Approach 1:
The patent replaces bulky mechanical barrier filters with an adaptive inertial particle separator system that uses aerodynamic forces and controlled flow manipulation to remove particles. This substitution eliminates the need for heavy physical filtering media, significantly reducing weight while maintaining effective particle removal through inertial separation mechanisms that respond dynamically to particle concentrations.
4Reliability
If bulky barrier filters are used to remove sand and dust, then sand and dust removal is improved, but pressure drop at the inlet increases that adversely affects engine performance
Solution Approach 1:
The system replaces restrictive mechanical filters with an adaptive inertial separator that uses flow direction changes and inertial forces to separate particles. This substitution maintains effective particle removal while minimizing pressure drop, as the separator only actively engages when particles are detected, allowing unimpeded airflow during clean conditions.
Solution Approach 2:
The inertial particle separator dynamically adjusts its resistance to airflow based on detected particle concentrations. During clean conditions, the system offers minimal resistance, preserving inlet pressure and engine performance. When particles are detected, the system activates separation mechanisms that provide protection while maintaining reasonable pressure characteristics, avoiding the constant high pressure drop of fixed filters.
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 inflatable boot system effectively channels sand and dust particles away from the clean air flow, reducing engine performance losses and maintenance needs, while maintaining efficient operation in varying environmental conditions.
Implementation Method 1
Inertial inlet particle separators work by imparting momentum and trajectory on sand and dust particles to channel such particles away from the fluid stream entering the gas turbine engine
Implementation Method 2
The boot includes a plurality of fluid exit slots such that clean air is facilitated to be adhered to a flow path surface downstream from the boot
Data Source
AI summary
A method for operating a gas turbine engine including a compressor is provided. The method includes defining a predetermined concentration, placing at least one sensor in an inlet of the gas turbine engine, detecting a sand and dust concentration value using the at least one sensor; and deploying a boot to facilitate preventing particles from entering the compressor when the sand and dust concentration value equals or exceeds the predetermined concentration. The boot includes a plurality of fluid exit slots such that clean air is facilitated to be adhered to a flow path surface downstream from the boot.