Threaded Coolant Conduit Coupling for Gasification Feed Injector

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Solution Overview

Problem

Feed injectors in gasification systems face premature wear and failure due to high temperatures and thermal stress, leading to reduced lifespan and downtime, despite the use of high-temperature materials and existing cooling techniques.

Innovation Solution

A gasification feed injector design featuring a tip portion with a coolant chamber and a coolant fluid conduit connected via a threaded interface, using a high-temperature sealant to prevent leakage and thermal stress, allowing for improved thermal resistance and extended lifespan.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If existing cooling techniques are used, then temperature control is improved, but feed injector lifespan is reduced due to thermal stress and stress cracks

Engineering Contradiction:

Improvetemperature controlVSAvoidfeed injector lifespan

Core Design Contradiction:

TemperatureVSDuration of action of stationary object

Solution Approach 1:

The feed injector is divided into separate components (injector body, tip, coolant fluid conduit) that can be independently manufactured and assembled. This segmentation allows each component to be optimized for its specific function and replaced independently, extending overall system lifespan.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Coolant channels are pre-formed within the injector structure, and coolant fluid conduits are pre-assembled with threaded connections. This preliminary preparation of cooling pathways enables effective temperature management before thermal stress causes damage, preventing premature failure.

Inventive Principle:

Principle #10Preliminary action

2Ease of operation

If threaded connection is used to couple coolant fluid conduit, then ease of assembly is improved, but leakage risk increases at the connection interface

Engineering Contradiction:

Improveease of assemblyVSAvoidconnection reliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

A threaded connection interface acts as an intermediary mechanism between the injector tip and coolant fluid conduit. This standardized threading system provides both mechanical attachment and fluid sealing, reconciling the need for easy assembly with connection reliability through proven threaded fastening technology.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Temperature

If coolant chamber is integrated into tip portion, then cooling efficiency is improved, but manufacturing complexity increases

Engineering Contradiction:

Improvecooling efficiencyVSAvoidmanufacturing complexity

Core Design Contradiction:

TemperatureVSDevice complexity

Solution Approach 1:

The coolant chamber is integrated into the tip portion as a distinct functional element that can be manufactured separately and assembled. This segmentation allows the tip to be produced using optimized processes for its specific geometry and cooling requirements, then combined with other components, balancing cooling efficiency with manufacturing feasibility.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS9200803B2System and method for coupling coolant fluid conduit to feed injector tip

Publication Date: 2015.12.01 AIR PROD & CHEM INC

AI summary

A system includes a gasification feed injector that includes a tip portion with a first threaded portion, a coolant chamber disposed in the tip portion, and a coolant fluid conduit having a second threaded portion. The coolant fluid conduit is coupled to the tip portion adjacent to the coolant chamber via screwing of the second threaded portion into the first threaded portion.