Pipeline Control Unit With Segmented Housing For Maintenance

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Solution Overview

Problem

Existing pipeline repair valves require shutdown and depressurization for maintenance, leading to costly downtime, corrosion issues, and debris accumulation, which complicates quick replacement and maintenance of pipeline control mechanisms.

Innovation Solution

A pipeline control unit with a housing and attachable pressure cover plates and valve servicing assemblies that allow for fluid-tight removal and replacement of pipeline control mechanisms without interrupting system pressure, using a flanged structure with access openings for isolation valve assemblies and scraping attachments to manage debris.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a mother-valve structure is used to house pipeline control mechanisms, then fluid-tight sealing is improved, but maintenance requires system shutdown and depressurization causing downtime

Engineering Contradiction:

Improvefluid-tight sealingVSAvoiddowntime

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The housing is divided into a stationary portion and a movable portion that can be independently removed. The pipeline control mechanism is retained by the stationary portion, allowing the movable portion to be detached for maintenance without shutting down the system. This segmentation enables separate access to the control mechanism while maintaining system pressure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The housing transitions from a static, fully enclosed structure to a dynamic structure with movable portions that can be selectively opened. This allows the housing to adapt between a sealed state during operation and an open state during maintenance, enabling quick replacement of control mechanisms without full system depressurization.

Inventive Principle:

Principle #15Dynamics

2Productivity

If the pipeline control unit remains pressurized during operation, then continuous fluid flow is maintained, but corrosion accumulates and debris builds up inside the housing

Engineering Contradiction:

Improvecontinuous fluid flowVSAvoidcorrosion and debris accumulation

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The movable housing portion can be opened without full system shutdown to perform preliminary cleaning actions. Debris removal tools and cleaning mechanisms can be introduced through the opening to clear accumulated particles and corrosion products before they cause severe damage, while the rest of the system remains pressurized and operational.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system maintains continuous pressurized operation while allowing periodic access for maintenance. The movable housing portion enables brief maintenance interventions without interrupting the overall continuous flow, allowing cleaning and debris removal to occur during normal operation rather than requiring complete system shutdown.

Inventive Principle:

Principle #20Continuity of useful action

3Ease of repair

If quick replacement of pipeline control mechanisms is enabled, then maintenance time is reduced, but proper sealing and fluid-tight connection become more difficult to achieve

Engineering Contradiction:

Improvequick replacementVSAvoidsealing quality

Core Design Contradiction:

Ease of repairVSReliability

Solution Approach 1:

A sealing interface is introduced as an intermediary between the pipeline control mechanism and the housing. This sealing interface can be quickly engaged and disengaged while maintaining fluid-tight connection, facilitating rapid replacement without compromising seal integrity. The sealing mechanism acts as a mediator that simplifies the connection process while ensuring proper sealing.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Ease of operation

If the housing structure is simplified for easy access, then maintenance becomes quicker, but structural strength and pressure containment may be compromised

Engineering Contradiction:

Improveaccess to control mechanismVSAvoidpressure containment

Core Design Contradiction:

Ease of operationVSStrength

Solution Approach 1:

The housing is segmented into stationary and movable portions, each optimized for their specific functions. The stationary portion maintains structural strength for pressure containment, while the movable portion provides easy access for maintenance. This segmentation allows the access function to be added without compromising the overall structural integrity of the pressure-containing housing.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS9004095B2Support structure for repair of pipeline controls

Publication Date: 2015.04.14 MAICHEL JEFFREY L

AI summary

A pipeline control unit that connects two conduits attached to opposing sides of a housing with an attachable pressure cover plate and a valve servicing assembly that can be installed onto the housing to form a fluid-tight structure. A pipeline control mechanism can be mounted in an access opening of the pipeline control unit to enable a user to selectively control fluid flow through the housing. The pipeline control unit allows the removal and replacement of the pipeline control mechanism without depressurizing a pipeline system.