Safety Valve Meltable Body Protrusion Fulcrum Design
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Solution Overview
Problem
Meltable type safety valves face challenges in dealing with high temperatures and pressures due to the low strength of their meltable bodies, which can lead to damage and incorrect actions.
Innovation Solution
A safety valve design featuring a meltable body positioned between the valve seat and element, with a protrusion acting as a fulcrum to inhibit pressure on the meltable body, allowing it to melt and release gas at abnormal temperatures, thereby preventing incorrect actions and simplifying the structure for easy gas release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the strength of the meltable body is increased to deal with high temperature and high pressure, then the ability to handle high pressure is improved, but the meltable body becomes harder to melt and may cause wrong actions
Solution Approach 1:
The support function is segmented from the meltable body to a separate protrusion structure on the valve seat. This allows the meltable body to maintain low strength for easy melting while the protrusion provides structural support to handle high pressure, preventing wrong actions.
Solution Approach 2:
The support function is extracted from the meltable body and transferred to the protrusion on the valve seat. The meltable body only performs its melting function, while the protrusion handles the mechanical support and pressure resistance, eliminating the contradiction between strength and meltability.
2Reliability
If the meltable body is positioned to block the gas release hole, then the sealing function is improved, but the pressure acting on the meltable body increases causing damage
Solution Approach 1:
The protrusion acts as an intermediary structure between the valve seat and the meltable body. It provides a fulcrum point that supports the valve element, allowing the meltable body to block the gas release hole for sealing while preventing excessive pressure from acting directly on the meltable body.
Solution Approach 2:
The protrusion provides a counterbalancing support structure that offsets the pressure load on the meltable body. By positioning the meltable body to block the gas release hole while using the protrusion as a fulcrum, the pressure is distributed away from the meltable body, preventing pressure-induced damage.
3Ease of manufacture
If a simple structure is used for the safety valve, then the ease of manufacture is improved, but the ability to prevent wrong actions at high pressure is reduced
Solution Approach 1:
The safety valve structure is segmented into functional components: the protrusion on the valve seat provides support and fulcrum function, while the meltable body provides sealing and melting function. This simple segmented structure achieves both ease of manufacture and reliability in preventing wrong actions.
Solution Approach 2:
The protrusion structure serves multiple functions: it acts as a fulcrum for the valve element, provides structural support against high pressure, and enables the meltable body to perform sealing without bearing excessive pressure. This multi-functional design achieves reliability with simple structure.
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 design effectively prevents wrong actions at high temperatures and pressures by ensuring the meltable body is not damaged and allows for reliable gas release, enhancing the safety valve's ability to handle extreme conditions without compromising material strength.
Implementation Method 1
a meltable body (30) that is made of a material capable of being melt at an abnormal high temperature
Implementation Method 2
the valve element is inclined towards the gap portion by taking the protrusion as a fulcrum
Data Source
AI summary
A safety valve includes: a valve element; a valve seat that has a gas release hole from which a gas is released and a protrusion that protrudes towards the valve element; and a meltable body that is made of a material capable of being melt at an abnormal high temperature. At a temperature other than the abnormal high temperature, the meltable body limits displacement of the valve element to thereby prevent inflow of the gas towards the gas release hole. At the abnormal high temperature, the meltable body is melt, thereby the valve element is displaced and the gas is released from the gas release hole.