Gas Purging Plug Push-Fit Adapter for Metallurgical Vessels

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Solution Overview

Problem

The existing gas purging plugs for metallurgical vessels are difficult to mount and dismount, requiring high effort and causing significant gas loss, with existing solutions either being cumbersome with long gas supply pipes or poorly sealing.

Innovation Solution

A gas purging plug with a short gas supply adapter featuring a push-fit connection between the adapter and the gas supply pipe, secured with additional elements like screw threads or a bayonet lock, allowing for quick and secure assembly without tools, even at high temperatures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a long gas supply pipe is used to connect the gas purging plug to the gas source, then the gas supply is reliable and stable, but the mounting and dismounting effort increases significantly and time is lost

Engineering Contradiction:
Improvegas supply reliabilityVSAvoidmounting and dismounting time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The gas supply system is divided into separate segments: a short gas supply adapter integrated with the purging plug and a detachable gas supply pipe. This segmentation allows the pipe to be quickly connected and disconnected while the adapter remains fixed, reducing mounting time without compromising gas supply reliability through the integrated adapter design

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The gas supply adapter is pre-integrated with the purging plug during manufacturing, creating a ready-to-connect interface. This preliminary action eliminates the need for complex field assembly and ensures proper alignment and sealing are already established before the actual mounting operation begins

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If a simple connection method is used for the gas supply pipe, then mounting is easier and faster, but gas loss occurs due to poor sealing

Engineering Contradiction:
Improvemounting easeVSAvoidgas loss
Core Design Contradiction:
Ease of operationVSLoss of substance

Solution Approach 1:

A sealing element is introduced as an intermediary component between the gas supply pipe and the adapter. This sealing element acts as a mediator that ensures gas-tight connection while allowing for simple push-fit mounting, thus preventing gas loss without complicating the mounting process

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

A flexible sealing ring or membrane is used at the connection interface between the gas supply pipe and adapter. This flexible element deforms to create a gas-tight seal upon insertion, maintaining sealing effectiveness while allowing for easy connection and disconnection without complex fastening mechanisms

Inventive Principle:
Principle #30Flexible shells and thin films

3Reliability

If a complex securing mechanism is used to ensure gas-tight connection, then gas loss is prevented, but the mounting process becomes more complicated and time-consuming

Engineering Contradiction:
Improveconnection sealing reliabilityVSAvoidconnection mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The connection mechanism is designed to be self-sealing through the interaction of the gas supply pipe and adapter geometries. When the pipe is inserted into the adapter, the components themselves create the seal through their shaped interfaces, eliminating the need for additional complex sealing mechanisms while maintaining gas-tight connection

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The connection interface utilizes changes in geometric parameters along the insertion path - such as tapered sections or stepped diameters - to automatically create sealing contact. This parameter variation ensures gas-tight connection through the shape of the components themselves rather than through complex external sealing mechanisms

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS9683272B2Gas purging element and associated gas feed line
Publication Date: 2017.06.20 REFRACTORY INTELLECTUAL PROPERTY GMBH & CO KG
  • US9683272B2 patent drawing
  • US9683272B2 patent drawing
  • US9683272B2 patent drawing

AI summary

The invention relates to a gas purging element at a metallurgical vessel as well as a corresponding gas supply pipe.