Bellows Detector with Adjustment Screw for Pressure Monitoring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Pneumatic switch systems with deformable diaphragms are expensive and increase the overall cost due to the high cost of these components, which are used to detect changes in pressure for fault and alarm conditions.
Innovation Solution
A detector utilizing a bellows and an adjustment screw, where the bellows and adjustment screw are held in place by an insulation member within a housing, allowing for calibration and detection of pressure changes through contact surface communication, reducing the reliance on expensive deformable diaphragms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If deformable diaphragms are used to detect pressure changes, then pressure detection reliability is improved, but system cost increases
Solution Approach 1:
The patent replaces expensive deformable diaphragms with a disposable bellows component that can be easily manufactured and replaced. The bellows is designed as a simple, low-cost alternative that achieves the same pressure detection function without the high cost associated with traditional deformable diaphragms.
Solution Approach 2:
The invention creates a functional copy of the deformable diaphragm's pressure detection capability using a bellows mechanism. The bellows replicates the essential function of detecting pressure changes through deformation, providing the same reliability outcome through a different, more economical mechanical approach.
2Measurement precision
If deformable diaphragms are used for pressure detection, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts the essential pressure detection function from the complex deformable diaphragm assembly and implements it through a simpler bellows mechanism. By taking out only the necessary pressure-sensing capability and removing unnecessary complexity, the system achieves the same measurement precision with a less complex device structure.
Solution Approach 2:
Instead of using a deformable diaphragm that deforms under pressure, the invention inverts the approach by using a bellows that expands and contracts in response to pressure changes. This inverted mechanism achieves equivalent measurement precision through a fundamentally different, yet simpler, operational principle.
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 a cost-effective method for detecting pressure changes by using a bellows and adjustment screw, allowing for calibration and reliable operation without the need for expensive deformable diaphragms, thereby reducing system costs.
Implementation Method 1
a bellows fixed to the housing comprising a cavity and a first contact surface... detect a change in pressure of the medium based on whether the first contact surface and the second contact surface are in electrical communication
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A detector (100) that detects an alarm and/or fault condition with respect to a pressure of a medium is provided. The detector comprises a housing (102) comprising an access tube (104) configured to receive a medium and a bellows (108) fixed to the housing comprising a cavity (110) and a first contact surface (112). The detector also comprises an adjustment screw (114) positioned within the cavity of the bellows, coupled to the housing via an insulation member (120), and comprising a second contact surface (116). The detector is further configured to detect a change in pressure of the medium based on whether the first contact surface and the second contact surface are in electrical communication.