Pressure Regulator Filter Condition Detector

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Solution Overview

Problem

Existing fluid regulators face issues with filter clogging, which reduces the effectiveness of pressure regulation due to particulate accumulation, leading to decreased flow and increased wear on system components, with current solutions requiring noticeable degradation before filter maintenance is performed.

Innovation Solution

Incorporation of a detector system with measurement points upstream and downstream of the filter to measure pressure differences, providing visual or electronic alerts to operators about filter clogging, enabling timely maintenance and optimizing filter life.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a filter is disposed before the orifice to reduce particulate, then the wear and erosion on process control system components is reduced, but the filter becomes clogged or saturated with dirt, oil and debris, decreasing fluid flow through the regulator

Engineering Contradiction:
Improvewear and erosion on componentsVSAvoidfluid flow through regulator
Core Design Contradiction:
Object-affected harmful factorsVSProductivity

Solution Approach 1:

The patent applies preliminary action by implementing a detector that monitors filter condition before significant clogging occurs. The detector measures parameters such as pressure differential across the filter or particulate concentration in the fluid, providing early warning signals that enable proactive filter maintenance before flow restriction becomes problematic.

Inventive Principle:
Principle #10Preliminary action

2Ease of repair

If operators change filters after noticeable impact has occurred, then maintenance is performed, but pressure regulation effectiveness is already degraded and system operation is disrupted

Engineering Contradiction:
Improvefilter maintenanceVSAvoidpressure regulation effectiveness
Core Design Contradiction:
Ease of repairVSReliability

Solution Approach 1:

The patent implements feedback by using a detector that continuously monitors filter condition and provides real-time information to operators. This feedback mechanism enables operators to change filters based on actual condition data rather than waiting for noticeable degradation, thereby maintaining pressure regulation effectiveness and avoiding system disruptions.

Inventive Principle:
Principle #23Feedback

3Object-affected harmful factors

If the filter becomes congested with particulate, then particulate removal is improved, but the flow of process fluid through the filter decreases

Engineering Contradiction:
Improveparticulate in process fluidVSAvoidprocess fluid flow
Core Design Contradiction:
Object-affected harmful factorsVSQuantity of substance

Solution Approach 1:

The detector enables preliminary action by identifying when the filter reaches an optimal replacement point before excessive particulate accumulation restricts flow. This allows operators to replace filters proactively, maintaining both effective particulate removal and adequate fluid flow through the regulator.

Inventive Principle:
Principle #10Preliminary action

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 detector system effectively alerts operators to filter clogging, allowing for proactive maintenance, reducing operational disruptions and extending filter life, thus maintaining consistent fluid pressure and system efficiency.

Implementation Method 1

a detector having a first measurement point upstream from the filter and a second measurement point downstream from the filter and upstream from the flow control member

Methodology Applied
Scientific EffectPressure difference measurement: Pressure Drop

Data Source

PatentEP2972632B1Pressure regulators with filter condition detectors
Publication Date: 2019.12.04 EMERSON PROCESS MANAGEMENT REGULATOR TECHNOLOGIES INC
  • EP2972632B1 patent drawingFigure 1
  • EP2972632B1 patent drawingFigure 2
  • EP2972632B1 patent drawingFigure 3

AI summary

Example pressure regulators with filter condition detectors are described herein. In one example described here, a regulator includes a body having an inlet and an outlet and a flow control member interposed between the inlet and the outlet to regulate a fluid pressure at the outlet. The example regulator also includes a filter disposed between the inlet and the flow control member and a detector having a first measurement point upstream from the filter and a second measurement point downstream from the filter and upstream from the flow control member.