Pipeline Bladder Insertion with Natural Gas Capture During Emptying

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Solution Overview

Problem

The uncontrolled release of natural gas, particularly methane, into the atmosphere during the emptying of gas pipelines for maintenance poses environmental and climate hazards.

Innovation Solution

A bladder insertion device equipped with a collection container and/or a gas flare to capture and/or combust the natural gas, preventing its uncontrolled release, featuring components like exhaust pipes, shut-off devices, sensors, and a control unit for controlled operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a bladder insertion device is used to empty gas pipeline sections for maintenance, then the pipeline can be safely accessed for repairs, but natural gas escapes uncontrolled into the atmosphere causing environmental harm

Engineering Contradiction:
Improvepipeline maintenance accessibilityVSAvoidnatural gas emissions
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The patent converts the harmful natural gas emissions into a beneficial resource by capturing the gas in a storage container during pipeline emptying operations. The collected gas can then be reused or properly disposed of, transforming what was previously a harmful environmental release into a valuable asset that prevents both pollution and gas waste

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent introduces an intermediary system consisting of a storage container and associated control devices between the pipeline and the environment. This intermediary captures the natural gas flow during pipeline emptying, preventing direct atmospheric release while enabling controlled gas management through the bladder insertion device

Inventive Principle:
Principle #24Intermediary (Mediator)

2Stress or pressure

If natural gas is released during pipeline emptying, then the pipeline section can be depressurized for maintenance, but methane is released into the atmosphere causing climate damage

Engineering Contradiction:
Improvepipeline pressure reductionVSAvoidclimate impact
Core Design Contradiction:
Stress or pressureVSObject-affected harmful factors

Solution Approach 1:

The patent transforms the climate-damaging methane release into a beneficial outcome by capturing the natural gas in a storage container during pipeline depressurization. The captured gas prevents climate damage while maintaining the necessary pressure reduction for maintenance operations

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

3Object-generated harmful factors

If a collection container is added to the bladder insertion device to capture natural gas, then emissions are reduced, but device complexity increases

Engineering Contradiction:
Improvegas emissions controlVSAvoiddevice structure
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The patent makes the bladder insertion device multi-functional by integrating a storage container that serves both as a gas capture system for emission control and as part of the overall pipeline maintenance equipment. This universal approach allows the device to perform both the original function of pipeline isolation and the new function of gas collection and management

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

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 device effectively collects or combusts natural gas, reducing atmospheric emissions and enabling controlled disposal or reuse, thus minimizing environmental impact.

Implementation Method 1

A bladder insertion device equipped with a collection container and/or a gas flare to capture and/or combust the natural gas

Methodology Applied
Scientific EffectCombustion: Combustion

Data Source

PatentEP4350191B1Bubble setting apparatus and method of using a bubble setting apparatus
Publication Date: 2025.12.17 WESTNETZ GMBH
  • EP4350191B1 patent drawingFigure 1
  • EP4350191B1 patent drawingFigure 2
  • EP4350191B1 patent drawingFigure 3~5

AI summary

The invention relates to a bladder setting device (10) for at least temporarily blocking and at least partially emptying at least one fluid-carrying pipeline (11).