Rupture Disc Actuator Housing Segmentation
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Solution Overview
Problem
Rupture disk assemblies face issues where the actuator, placed on the side of the container or conduit, can be affected by the medium stored inside, leading to impaired function or failure, and there is a need to reduce the rupture pressure to lower than the nominal pressure without exposing the actuator to the medium.
Innovation Solution
The actuator is housed within a protective enclosure with a cover that seals against the medium, allowing the actuator to reduce the rupture pressure by striking the rupture disk without being directly exposed, using a plunger and drive mechanism to lower the pressure irreversibly, while maintaining the rupture disk's integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the actuator is placed on the side of the rupture disk facing the container to reduce rupture pressure, then the rupture pressure can be reduced below nominal pressure, but the actuator is exposed to the medium which may impair its function or cause failure
Solution Approach 1:
The housing is divided into two chambers: a first chamber containing the actuator and a second chamber containing the rupture disk. This segmentation isolates the actuator from the medium while allowing it to influence the rupture disk through the rod that passes through the housing wall.
Solution Approach 2:
The rod acts as an intermediary element that transmits the actuating force from the protected actuator chamber to the rupture disk in the medium-exposed chamber. This allows the actuator to control the rupture disk without direct exposure to the medium.
2Object-affected harmful factors
If the actuator is housed in a separate chamber to protect it from the medium, then the actuator is protected from medium exposure, but the device complexity increases due to additional housing structure
Solution Approach 1:
The housing combines multiple functions: it provides structural support for the rupture disk assembly, creates separate chambers for the actuator and rupture disk, and incorporates the rod passage through its wall. This merging of functions reduces overall device complexity despite the added chamber 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 solution effectively protects the actuator from the medium, allowing controlled pressure relief at lower than nominal pressures without damaging the rupture disk, ensuring the assembly's reliability and safety.
Implementation Method 1
an actuator for reducing the rupture pressure, wherein the actuator has a rod, in particular, a plunger, which acts on the rupture disk, in particular, can strike against the rupture disk, in order to reduce the rupture pressure
Data Source
AI summary
A rupture disk assembly comprises: a single-part or multi-part body with an opening that forms an outlet for a conduit or a container; a rupture disk that closes the opening and bursts subject to the action of a rupture pressure in order to unblock the opening; an actuator to reduce the rupture pressure, wherein the actuator includes a plunger to reduce the rupture pressure on the rupture disk, the plunger being configured to strike against the rupture disk; and a housing to receive the actuator, the housing including a housing opening for the plunger.