Valve Stem Protector Condensation Drainage System

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Solution Overview

Problem

Valve actuator/valve stem junctions in harsh industrial environments face corrosion and contamination due to condensation within the valve stem protector housing, which existing solutions fail to adequately address, despite the importance of lubrication and protection from corrosion.

Innovation Solution

A condensation draining system is implemented within the valve stem protector assembly, directing interior condensation to an opening at the bottom of the assembly for drainage outside, utilizing a combination of structural elements and potentially wicking materials to facilitate this process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a valve stem protector housing is used to shield the valve stem and actuator joint areas from ambient atmospheric conditions, then protection from corrosion is improved, but condensation collects within the housing causing internal corrosion and contamination

Engineering Contradiction:
Improveprotection from corrosionVSAvoidcondensation accumulation
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the harmful condensation from the protector housing by providing drainage openings at the bottom of the housing that allow condensation to escape. This removes the harmful factor (condensation) while preserving the protective function of the housing enclosure.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces an intermediary drainage system consisting of openings and optionally wicking material between the condensation and the external environment. This intermediary structure allows controlled removal of condensation while maintaining the sealed protective enclosure against ambient conditions.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the protector housing is sealed to prevent ambient water entry, then external corrosion protection is improved, but internal condensation cannot escape

Engineering Contradiction:
Improvecorrosion protectionVSAvoidcondensation retention
Core Design Contradiction:
ReliabilityVSLoss of substance

Solution Approach 1:

The patent applies local quality by creating a selective opening at the bottom of the housing that allows condensation to escape while maintaining the sealed nature of the rest of the housing. The opening is positioned and sized to provide drainage functionality without compromising the overall protective sealing against ambient water and contaminants.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent may employ wicking material with porous structure at the drainage opening to facilitate condensation removal through capillary action while maintaining a sealed appearance and function. The porous material allows selective passage of condensation while blocking larger ambient contaminants.

Inventive Principle:
Principle #31Porous materials

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

Effectively prevents corrosion and contamination by removing condensation from the valve actuator/valve stem contact area, enhancing the reliability and longevity of valve actuation systems in harsh environments.

Implementation Method 1

directing interior condensation to at least one opening in a lower portion of, or at the bottom of, the assembly combination

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentUS7909053B2Draining system for valve actuator/valve stem protector assemblies
Publication Date: 2011.03.22 EMERSON PROCESS MANAGEMENT VALVE AUTOMATION INC
  • US7909053B2 patent drawing
  • US7909053B2 patent drawing
  • US7909053B2 patent drawing

AI summary

Condensation draining system and method for valve stem protectors comprising an actuator and a stem protector assembly structured in combination to provide a drain and an opening for draining condensation from inside the assembly to outside the combination.