Pneumatic Surge Suppressor With Pressure Multiplication Control
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Solution Overview
Problem
Pneumatic surge suppressors in paint circulation systems require high-pressure air or nitrogen for operation, leading to increased costs, time, and effort, and often suffer from reliability issues and manual pressure adjustment challenges, with potential diaphragm rupture causing cross-contamination and leakage.
Innovation Solution
A surge suppressor design featuring a pressure control member, a boost member within an air housing, and a shaft connecting them, allowing for force multiplication between the working fluid and process fluid, enabling effective vibration damping with lower working fluid pressures and automatic pressure adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-pressure air is used to charge the pneumatic surge suppressor, then the suppressor can effectively dampen pressure variations in high-pressure fluid systems, but the cost, time, and effort for charging increases significantly
Solution Approach 1:
The patent replaces the manual mechanical charging process with an automated pneumatic charging system. The automated charge system uses a charge pump and control valve to automatically fill the air chamber with compressed air, eliminating the need for manual connection and charging by operators. This substitution of automated pneumatic control for manual mechanical operation resolves the contradiction by maintaining suppressor performance while dramatically reducing charging time and effort.
Solution Approach 2:
The surge suppressor incorporates an automated charge system that self-regulates the air pressure in the air chamber using a control valve and pressure sensor. The system automatically monitors and adjusts the charge pressure without requiring external intervention, enabling the suppressor to maintain optimal performance autonomously. This self-service capability eliminates the need for frequent manual charging operations.
2Adaptability or versatility
If manual pressure adjustment is used to maintain air pressure in the surge suppressor, then the system can adapt to pressure changes, but constant monitoring and adjustment are required
Solution Approach 1:
The patent implements a feedback control system that uses a pressure sensor to continuously monitor the air pressure in the air chamber and automatically adjusts the charge pressure via a control valve. The system compares the actual pressure with the desired setpoint and modulates the charging process accordingly, eliminating the need for manual monitoring and adjustment while maintaining adaptability to pressure changes.
Solution Approach 2:
The manual pressure adjustment mechanism is replaced with an automated electronic control system featuring a pressure sensor, control valve, and microcontroller. This substitution transforms the operation from requiring constant human intervention to an autonomous system that automatically adapts to pressure variations, significantly simplifying operation while maintaining adaptability.
3Object-affected harmful factors
If a diaphragm is used to separate process fluid and working fluid, then the barrier function is provided, but cross-contamination and leakage occur if the diaphragm ruptures
Solution Approach 1:
The patent divides the surge suppressor into three completely separate chambers: a process fluid chamber, an air chamber, and a charge fluid chamber, separated by two diaphragms (process fluid diaphragm and charge fluid diaphragm). This segmentation creates multiple independent barriers, ensuring that even if one diaphragm fails, the other continues to prevent cross-contamination between process fluid and working fluids.
Solution Approach 2:
The patent incorporates redundant diaphragm barriers as a preventive measure against diaphragm rupture. By placing multiple diaphragms in series between the process fluid and working fluids, the system creates a backup barrier that protects against contamination even if one diaphragm fails. This beforehand cushioning approach ensures continuous protection without requiring active monitoring or intervention.
4Extent of automation
If auto-adjust systems with spool valves are incorporated, then pressure can be automatically adjusted, but the valves chatter and leak and need regular self-adjustment
Solution Approach 1:
The patent replaces the problematic spool valve mechanism with an electronically controlled on/off charge valve system managed by a microcontroller. This substitution eliminates the chattering and leaking issues inherent in analog spool valves by using digital control with precise switching, significantly improving reliability while maintaining automated pressure adjustment capability.
Solution Approach 2:
The patent implements a digital feedback control system where a pressure sensor continuously monitors air chamber pressure and the microcontroller adjusts the charge valve accordingly. This feedback mechanism provides precise, chatter-free pressure control by using digital switching based on actual pressure measurements, eliminating the inherent instability of mechanical spool valves while maintaining full automation.
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 solution provides efficient vibration damping in high-pressure paint systems using lower-pressure working fluids, reduces operational costs, and minimizes manual intervention and contamination risks, while maintaining system efficiency and reliability.
Implementation Method 1
flowing working fluid into an upper chamber of an air housing through the first pressure control valve with the first pressure control valve in the first open state, the working fluid increasing a charge pressure in the upper chamber
Implementation Method 2
A surge suppressor design featuring a pressure control member, a boost member within an air housing, and a shaft connecting them, allowing for force multiplication between the working fluid and process fluid
Implementation Method 3
The pneumatic surge suppressor is configured to dampen vibrations in a process fluid
Data Source
AI summary
A surge suppressor includes a boost mechanism configured to balance pressures between a working fluid and a process fluid. The boost mechanism includes a boost member that is acted on by a charge pressure of the working fluid. A shaft extends from the boost member to a pressure control member bounding the process fluid and acting on the process fluid. The boost member can have a larger effective area than the pressure control member to provide a pressure multiplication between the charge pressure and the process fluid pressure. In addition, pressure control valves are mounted to an air housing and actuated open by the boost mechanism. Actuating one of the pressure control valves open increases the charge pressure. Actuating the other pressure control valve open decreases the charge pressure.