Manual Reset Actuator Assembly for Diaphragm Valve Pressure Release
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Solution Overview
Problem
Existing fire suppression systems lack an efficient and user-friendly method for resetting flow control valves after activation, which can lead to prolonged system downtime and increased risk of fire spread.
Innovation Solution
A manual reset actuator assembly that includes a housing with a main drain, diaphragm release aperture, upper chamber, control port, and sealing assembly, which allows a user to reset the flow control valve by manually controlling fluid pressure and flow paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a manual reset actuator is designed with a sealing assembly and plunger mechanism, then the reliability of valve resetting is improved, but the device complexity increases
Solution Approach 1:
The actuator is divided into distinct functional components: a sealing assembly with a plunger for sealing the diaphragm chamber port, a button for user operation, a spring for providing resetting force, and a housing with separate chambers. This segmentation allows each component to perform its specific function reliably while maintaining overall system manageability.
Solution Approach 2:
The plunger is disposed within the lower chamber and works in conjunction with the diaphragm chamber port, while the button extends through the housing to allow external operation. The spring is positioned to bias the plunger against the port. These nested and integrated components work together to provide reliable sealing and resetting functionality without requiring excessive external complexity.
2Ease of operation
If the reset mechanism requires manual operation of a button, then the ease of operation is improved, but the loss of time increases due to manual intervention
Solution Approach 1:
The spring-loaded plunger mechanism automatically seals the diaphragm chamber port when the button is released, and the spring provides the resetting force without requiring additional manual intervention. The system uses the stored mechanical energy in the spring to perform the resetting action, reducing the time and effort required compared to fully manual mechanisms.
3Measurement precision
If the plunger seals the diaphragm chamber port, then the pressure control precision is improved, but the device complexity increases
Solution Approach 1:
The sealing function is extracted as a separate, dedicated plunger component that can be independently optimized for sealing performance. This allows the pressure control precision to be improved through the specialized sealing action of the plunger without requiring the entire actuator mechanism to be overly complex.
Solution Approach 2:
The plunger provides localized sealing at the diaphragm chamber port, concentrating the sealing function at the critical interface where pressure control is needed. This localized approach achieves precise pressure control without requiring complex sealing mechanisms throughout the entire device.
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
Enables efficient and user-friendly resetting of flow control valves, reducing system downtime and enhancing fire suppression effectiveness by allowing manual control over fluid pressure and flow.
Implementation Method 1
a spring is configured to couple to the diaphragm release aperture and a bottom of the plunger and exert an upward force on the plunger
Implementation Method 2
The fluid in the upper chamber is released through the control port via the control orifice, such that releasing the fluid, lowers the pressure in the upper chamber
Implementation Method 3
a plunger coupled to the button and configured to selectively seal a fluid flow path between the main drain and the diaphragm chamber port
Data Source
AI summary
A manual reset actuator includes a main drain, a diaphragm release aperture fluidly coupled to a flow control valve, an upper chamber, a control port, a control orifice, an upper chamber supply orifice, and a sealing assembly, which includes a button, and a plunger. A pressure in the upper chamber exerts a downward force on the plunger. A spring exerts an upward force on the plunger. The fluid in the upper chamber is released via the control orifice, which lowers the pressure in the upper chamber, decreasing the downward force exerted on the plunger. When the downward force is less than the upward force, the spring forces the plunger upwards into an open configuration, which unseals the diaphragm release aperture. When the upward force is less than the downward force, the plunger remains in a closed configuration, which keeps the diaphragm release aperture sealed.