Diaphragm Pressure Reducer Vent Shutoff for Rupture Leakage
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Solution Overview
Problem
Diaphragm pressure reducers in water systems are prone to rupture due to overpressure or chemical corrosion, leading to flooding when external devices like safety valves or anti-water hammer valves fail to function.
Innovation Solution
A diaphragm pressure reducer design that incorporates an elastic deformable element in the air vent passage, which allows air to flow during normal operation but deforms to shut the vent passage in case of diaphragm rupture, preventing water from escaping without relying on external devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the diaphragm pressure reducer uses a vent hole to allow air to escape from the second chamber, then air can be vented to avoid compression, but water can leak out in case of diaphragm rupture
Solution Approach 1:
A float is introduced as an intermediary element in the vent hole passage. The float normally allows air to pass through but automatically blocks the passage when water enters the second chamber, preventing water leakage while maintaining air venting functionality
Solution Approach 2:
The system uses the weight and buoyancy characteristics of the float to automatically detect water presence and close the vent hole without external control. The float self-activates based on whether air or water is present in the chamber
2Reliability
If external safety devices like anti-water hammer valves are installed to prevent overpressure damage, then diaphragm rupture can be prevented, but device complexity and cost increase
Solution Approach 1:
The safety protection function is merged with the existing vent hole structure by integrating a float mechanism into the passage. This combines the air venting and water leakage prevention functions into a single integrated component rather than adding separate external safety devices
Solution Approach 2:
The float mechanism automatically detects and responds to water presence in the second chamber, providing self-protecting functionality without requiring external control systems or additional complex components
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 water leakage in the event of diaphragm rupture, maintaining system integrity without the need for external safety devices, achieved through a simple and cost-effective construction.
Implementation Method 1
an elastic diaphragm on which the water pressure acts to push the shutter to close
Implementation Method 2
a shutter pushed to open by a spring
Implementation Method 3
an elastically deformable element inserted into the air vent passage which allows air to flow in the vent passage and which, in the event of rupture of the diaphragm, is deformed under the thrust of the water so as to shut the air vent passage
Data Source
AI summary
A diaphragm pressure reducer has internally a shutter regulating the fluid passage between an inlet and an outlet; the shutter is pushed to open by a spring which is contrasted by an elastic diaphragm on which the fluid pressure acts to push the shutter to close; the diaphragm is placed between a first chamber in which the pressurized fluid is present that acts on the diaphragm and a second chamber communicating with the outside through an air vent passage; at the air vent passage an elastically deformable element is arranged that normally allows air to flow in the air vent passage, but in the event of rupture of the diaphragm through the thrust of the water pressure is deformed and moves so as to shut the aforesaid air vent passage and prevent water exiting the diaphragm pressure reducer.